Centrifugal casting equipment capable of automatically adding casting powder

Abstract

The utility model relates to the technical field of centrifugal casting, in particular to centrifugal casting equipment capable of automatically adding covering slag, which comprises a base, a casting component mounted on the base, a pouring device and a slag storage tank arranged on one side of the casting component, a discharge pipe arranged at the bottom of the slag storage tank, an air inlet pipe arranged at the top of the slag storage tank, and a turbine device serially connected onto the air inlet pipe. A baffle is fixedly installed in the discharging pipe and used for separating the discharging pipe, a movable plate is horizontally installed above the baffle in a telescopic mode, a plurality of first discharging ports are formed in the movable plate, a plurality of second discharging ports are formed in the baffle in a penetrating mode, and the movable plate is in transmission connection with a turbine device. By arranging the turbine device, the baffle, the movable plate and the like, automatic adding can be achieved in the whole casting powder adding process, casting powder can be added at the relatively uniform speed by means of intermittent alignment of the first discharging opening and the second discharging opening, and the situation that the effect is affected by adding too much casting powder within a short time is avoided.

Description

A centrifugal casting equipment with automatic addition of protective slag Technical Field

[0001] This utility model relates to the field of centrifugal casting technology, and in particular to a centrifugal casting device with automatic addition of protective slag. Background Technology

[0002] In the production of composite rolls, centrifugal casting equipment is required to produce the inner and outer layers of the roll. During production, after molten steel is poured into a rotating mold, protective slag needs to be added to the mold to ensure that it evenly covers the surface of the molten steel and forms an effective protective layer. Currently, the method of adding protective slag in centrifugal casting equipment mainly involves workers manually adding the slag into the mold using tools, which is inefficient. Furthermore, a utility model patent with authorization announcement number CN 212495289 U discloses a centrifugal casting protective slag adding device that uses protective gas input into the mold as a power source to blow protective slag from a slag storage tank into the mold. While this method automates the process, the protective slag in the storage tank is rapidly blown out by the protective gas within a short time, resulting in too much protective slag being added to the mold in a short period. This may prevent the protective slag from forming an effective protective layer, affecting the quality of the casting. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies where adding too much protective slag into the mold in a short time may prevent the protective slag from forming an effective protective layer, thus affecting the quality of the casting. Therefore, this invention proposes a centrifugal casting device that automatically adds protective slag.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a centrifugal casting device with automatic addition of protective slag, including a base, on which a mold assembly is installed. A corresponding casting device and slag storage tank are arranged on one side of the mold assembly. A discharge pipe is arranged at the bottom of the slag storage tank and an air inlet pipe is arranged at the top. A turbine device is connected in series on the air inlet pipe. A baffle is fixedly installed inside the discharge pipe. The end of the discharge pipe is placed in the mold assembly. The baffle is used to block the discharge pipe. A movable plate is horizontally telescopically installed above the baffle. Several first discharge ports are opened on the movable plate. Several second discharge ports corresponding one-to-one with the first discharge ports are opened through the baffle. The movable plate is drivenly connected to the turbine device.

[0006] Preferably, an inlet and outlet hole is provided on the discharge pipe between the baffle and the turbine device, and a movable rod is inserted into the inlet and outlet hole. The movable rod is arranged parallel to the movement direction of the baffle. The inner end of the movable rod is fixedly connected to the baffle, and the outer end of the movable rod extends out of the discharge pipe and is fixedly installed with a connecting seat. The connecting seat is connected to the turbine device through a crank-connecting rod structure.

[0007] Preferably, a connecting seat is fixedly installed at the outer end of the movable rod, and a return spring is sleeved on the movable rod between the connecting seat and the discharge pipe. The two ends of the return spring are fixedly connected to the connecting seat and the discharge pipe, respectively.

[0008] Preferably, a sealing sleeve is fitted onto the movable rod inside the inlet / outlet hole.

[0009] Preferably, both the movable plate and the baffle are made of stainless steel and have a polished surface.

[0010] Preferably, an electric heating wire is embedded in the inner wall of the slag storage tank.

[0011] Preferably, the outer surface of the slag storage tank is covered with polyurethane insulation material.

[0012] Preferably, both the air inlet pipe and the discharge pipe are wrapped with heat-insulating cotton.

[0013] The centrifugal casting equipment with automatic addition of protective slag proposed in this utility model has the following advantages:

[0014] The system is equipped with a slag storage tank, turbine device, baffle, and movable plate. After the molten steel is poured, protective gas is introduced into the air inlet pipe. When the protective gas passes through the turbine device on the air inlet pipe, the turbine device uses the kinetic energy of the protective gas, in conjunction with the crank-connecting rod structure and movable rod, to drive the movable plate to perform horizontal telescopic movement. This causes the first discharge port on the movable plate to intermittently align with the second discharge port on the baffle. When aligned, the protective slag stored in the slag storage tank is automatically added to the casting assembly intermittently along the air outlet pipe under the action of gravity and the pressure of the protective gas introduced into the slag storage tank. With the continuous input of protective gas, the protective slag is added until all the protective slag is added. The entire protective slag addition process can be achieved automatically. Furthermore, the intermittent alignment of the first and second discharge ports allows the protective slag to be added at a relatively uniform speed, avoiding the impact of adding too much protective slag in a short period of time. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of a centrifugal casting equipment with automatic addition of protective slag proposed in this utility model;

[0016] Figure 2 is a schematic diagram of the slag storage tank structure of a centrifugal casting equipment with automatic addition of protective slag proposed in this utility model;

[0017] Figure 3 is a schematic diagram of the internal structure of the slag storage tank of a centrifugal casting equipment with automatic addition of protective slag proposed in this utility model.

[0018] Figure 4 is a schematic diagram of the working principle of the movable plate and baffle of the centrifugal casting equipment with automatic addition of protective slag proposed in this utility model.

[0019] Figure 5 is a schematic diagram of the working principle of the movable plate and baffle of the centrifugal casting equipment with automatic addition of protective slag proposed in this utility model.

[0020] Figure 6 is a schematic diagram of the internal structure of a centrifugal casting equipment with automatic addition of protective slag proposed in this utility model.

[0021] In the diagram: 1. Base; 2. Casting mold assembly; 3. Casting device; 4. Slag storage tank; 5. Air inlet pipe; 6. Discharge pipe; 7. Movable plate; 8. Baffle; 9. First discharge port; 10. Second discharge port; 11. Movable rod; 12. Return spring; 13. Connecting seat; 14. Crank connecting rod structure; 15. Drive shaft; 16. Housing; 17. Air supply pipe; 18. Air outlet pipe; 19. Impeller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Referring to Figures 1-6, a centrifugal casting device with automatic addition of protective slag includes a base 1. The base 1 is characterized by having a mold assembly 2 installed on it. A corresponding pouring device 3 and a slag storage tank 4 are provided on one side of the mold assembly 2. The bottom of the slag storage tank 4 is provided with a discharge pipe 6 and the top is provided with an air inlet pipe 5. An electric heating wire is embedded in the inner wall of the slag storage tank 4. Both the inlet pipe 5 and the outlet pipe 6 are wrapped with insulation cotton. The outer surface of the slag storage tank 4 is covered with polyurethane insulation material. The inlet pipe 5 is used to connect to the protective gas supply device. A turbine device is connected in series on the inlet pipe 5. The turbine device includes a housing 16, which is cylindrical. A gas supply pipe 17 communicating with the interior is provided on the circumferential surface of the housing 16. An outlet pipe 18 communicating with the interior is provided on the upper end face of the housing 16. A drive shaft 15 is rotatably mounted on the lower end face of the housing 16. An impeller 19 is coaxially fixedly mounted on the drive shaft 15 inside the housing 16. The drive shaft 15 is connected to the movable plate 7. This turbine device converts a portion of the kinetic energy of the protective gas input into the inlet pipe 5 into driving energy. The kinetic energy of the rotating drive shaft 15 enables it to drive the movable plate 7 to perform horizontal telescopic movement. A baffle 8 is fixedly installed inside the discharge pipe 6, and the end of the discharge pipe 6 is placed in the casting assembly 2. The baffle 8 is used to isolate the discharge pipe 6. A movable plate 7 is horizontally telescopically installed above the baffle 8. The movable plate 7 has several first discharge ports 9, and several second discharge ports 10 corresponding one-to-one with the first discharge ports 9 are opened through the baffle 8. The movable plate 7 is connected to a turbine device, which drives the movable plate 7 to perform horizontal telescopic movement so that the several first discharge ports 9 on the movable plate 7 can be intermittently aligned with the second discharge ports 10 on the baffle 8. Both the movable plate 7 and the baffle 8 are made of stainless steel and have a polished surface.

[0024] An inlet and outlet hole is provided on the discharge pipe 6 between the baffle 8 and the turbine device. A movable rod 11 is inserted into the inlet and outlet hole. The movable rod 11 is arranged parallel to the movement direction of the baffle 8. The inner end of the movable rod 11 is fixedly connected to the baffle 8. The outer end of the movable rod 11 extends out of the discharge pipe 6 and is fixedly installed with a connecting seat 13. The connecting seat 13 is connected to the turbine device through a crank-connecting rod structure 14.

[0025] A connecting seat 13 is fixedly installed at the outer end of the movable rod 11. A return spring 12 is sleeved on the movable rod 11 between the connecting seat 13 and the discharge pipe 6. The two ends of the return spring 12 are fixedly connected to the connecting seat 13 and the discharge pipe 6, respectively. When the input of protective gas into the inlet pipe 5 is stopped, in order to keep the first discharge port 9 on the movable plate 7 and the second discharge port 10 on the baffle 8 in a staggered state when the turbine device stops rotating, a return spring 12 is provided. When the movable rod 11 stops moving, the return spring 12 will push the connecting seat 13 outward, causing the connecting seat to move the movable rod 11 outward, which in turn pulls the movable plate 7 outward, so that the first discharge port 9 and the discharge port are staggered. In this way, when the input of gas is stopped, the movable plate 7 and the baffle 8 will remain in a state of isolating the discharge pipe 6.

[0026] A sealing sleeve is fitted onto the movable rod 11 inside the inlet / outlet hole. The main body of the sealing sleeve is cylindrical, and several sealing rings are fixed at axial intervals along the outer edge of the main body of the sealing sleeve. The sealing rings improve the sealing performance between the movable rod 11 and the inner wall of the inlet / outlet hole.

[0027] In use, before casting, protective slag is added to the slag storage tank 4. At this time, the first discharge port 9 and the second discharge port 10 on the movable plate 7 and the baffle 8 are misaligned, thus sealing the discharge pipe 6. After the molten steel is cast, the protective gas supply device is turned on, and protective gas is input into the inlet pipe 5. When the protective gas passes through the turbine device on the inlet pipe 5, it drives the impeller 19 in the turbine device to rotate. The impeller 19 drives the rotating shaft to rotate. The rotating shaft drives the movable rod 11 through the crank-connecting rod structure 14 to make the movable plate 7 move horizontally. At this time, the first discharge port 9 on the movable plate 7 will intermittently align with the second discharge port 10 on the baffle 8. When aligned, the slag storage tank 4 is filled with protective slag. The protective slag stored in the slag tank 4 will be intermittently and automatically added to the casting assembly 2 along the gas outlet pipe 18 under the action of gravity and the pressure of the protective gas introduced into the slag tank 4. As the protective gas is continuously input, the protective slag is added until the addition is completed. Finally, the input of protective gas is stopped. At this time, the movable plate 7 stops moving and is reset under the action of the return spring 12. The first discharge port 9 and the second discharge port 10 are staggered, and the discharge pipe 6 returns to the isolated state. The entire process of adding protective slag can be achieved automatically. With the intermittent alignment of the first discharge port 9 and the second discharge port 10, the protective slag can be added at a relatively uniform speed, avoiding the effect of adding too much protective slag in a short period of time.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A centrifugal casting device with automatic addition of protective slag, comprising a base (1), characterized in that, A casting assembly (2) is installed on the base (1). A casting device (3) and a slag storage tank (4) are provided on one side of the casting assembly (2). A discharge pipe (6) is provided at the bottom of the slag storage tank (4) and an air inlet pipe (5) is provided at the top. A turbine device is connected in series on the air inlet pipe (5). A baffle (8) is fixedly installed inside the discharge pipe (6). The end of the discharge pipe (6) is placed in the casting assembly (2). The baffle (8) is used to block the discharge pipe (6). A movable plate (7) is horizontally telescopically installed above the baffle (8). Several first discharge ports (9) are opened on the movable plate (7). Several second discharge ports (10) corresponding to the first discharge ports (9) are opened through the baffle (8). The movable plate (7) is connected to the turbine device for transmission.

2. The protective slag automatically added centrifugal casting apparatus according to claim 1, characterized by, An inlet and outlet hole is provided on the discharge pipe (6) between the baffle (8) and the turbine device. A movable rod (11) is inserted into the inlet and outlet hole. The movable rod (11) is arranged parallel to the movement direction of the baffle (8). The inner end of the movable rod (11) is fixedly connected to the baffle (8). The outer end of the movable rod (11) extends out of the discharge pipe (6) and is fixedly installed with a connecting seat (13). The connecting seat (13) is connected to the turbine device through a crank connecting rod structure (14).

3. The centrifugal casting equipment with automatic addition of protective slag according to claim 2, characterized in that, A connecting seat (13) is fixedly installed at the outer end of the movable rod (11). A return spring (12) is sleeved on the movable rod (11) between the connecting seat (13) and the discharge pipe (6). The two ends of the return spring (12) are fixedly connected to the connecting seat (13) and the discharge pipe (6) respectively.

4. The protective slag automatically added centrifugal casting apparatus according to claim 2, characterized by, A sealing sleeve is fitted onto the movable rod (11) inside the inlet / outlet hole.

5. The protective slag automatically added centrifugal casting apparatus according to claim 1, characterized by, Both the movable plate (7) and the baffle (8) are made of stainless steel and have polished surfaces.

6. The centrifugal casting equipment with automatic addition of protective slag according to claim 1, characterized in that, The inner wall of the slag storage tank (4) is embedded with an electric heating wire.

7. The protective slag automatically added centrifugal casting apparatus according to claim 1, characterized by, The outer surface of the slag storage tank (4) is covered with polyurethane insulation material.

8. The protective slag automatically added centrifugal casting apparatus according to claim 1, characterized by, Both the air inlet pipe (5) and the discharge pipe (6) are wrapped with heat-insulating cotton.

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