A centrifugal production device for steel shot

Abstract

This utility model discloses a centrifugal steel shot production device, belonging to the technical field of metal casting equipment. It includes a centrifuge cylinder, a support plate, a limiting bar, a floating component, and an agitator. A motor is installed on the centrifuge cylinder to throw liquid steel particles out of its opening. The support plate supports the liquid steel particles as they roll towards a cooling pool. The floating component applies a driving force to the limiting bar, and the agitator causes a change in the liquid level in the cooling pool. In this centrifugal steel shot production device, when using centrifugation to prepare steel shot, the liquid steel particles are guided by the limiting bar to roll and form along the support plate during throwing. This effectively ensures the roundness of the liquid steel particles from contact with air until they fall into the water. Furthermore, during the rolling process, the liquid steel particles continuously merge with smaller liquid steel particles, effectively improving the production efficiency and cost-effectiveness of the steel shot.

Description

Technical Field

[0001] This utility model relates to the field of metal casting equipment technology, specifically to a centrifugal steel shot production device. Background Technology

[0002] Steel shot, scientifically known as cast steel shot, is mostly used in shot blasting machines. The shot blasting machine throws a large amount of steel shot onto the surface of a large workpiece placed inside the equipment, thereby performing surface treatment on the workpiece. Most existing large steel shot manufacturers use a centrifugal method with a high shot yield to produce steel shot, and then use a granulation tank to cool and shape the steel shot. This increases production and cooling efficiency while effectively reducing the proportion of hollow shot. After cooling, the steel shot is picked up from the granulation tank by a large magnet.

[0003] The centrifugal production of steel shot mainly includes the following steps: melting molten steel in a medium-frequency induction furnace, continuously throwing the molten steel out using centrifugal equipment to form liquid steel particles, cooling and solidifying the liquid steel particles in a granulation tank, and post-treatment such as tempering the steel shot. Among these, the liquid steel particles are instantly immersed in water. Although the surface cools rapidly and makes them round, the internal shrinkage cavities are numerous because the inside has not yet solidified. This results in a high breakage rate of steel shot during the use of the shot blasting machine. Therefore, it is necessary to allow the liquid steel particles sufficient cooling and shrinkage time in contact with air.

[0004] When molten steel shot leaves the high-speed rotating centrifugal equipment, in addition to cutting the molten steel into liquid steel particles of normal size, the centrifugal equipment also compresses the molten steel during the cutting process, thus producing a large number of even finer liquid steel particles. These particles fall into the granulation tank and cool and solidify together. The generation of these small, substandard steel shot not only reduces the efficiency and cost-effectiveness of enterprise production, but also makes it easy for them to stick together with qualified steel shot when rapidly cooled in water, affecting the shape of the finished product. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a centrifugal steel shot production device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a centrifugal steel shot production device, comprising:

[0007] A centrifuge is mounted on a cooling pool. Several rows of openings are provided around the centrifuge. A motor is installed on the centrifuge to throw liquid steel particles out of the openings.

[0008] A support plate is arranged around the periphery of the centrifuge tube. The support plate is used to support the liquid steel particles rolling down toward the cooling pool. The upper end of the support plate includes several aggregated parts protruding upwards on both sides of several rows of openings. The lower end of the support plate is a smooth, non-bending rolling part.

[0009] A limiting strip is provided on the support plate, and each of the limiting strips is used to guide the liquid steel particles thrown out from the opening to fall onto the granulation part;

[0010] A floating component floats on the surface of the cooling pool. The floating component applies a driving force to the end of the limiting strip away from the hole, causing the limiting strip to reciprocate and strike the support plate, depending on the height of the liquid surface it contacts.

[0011] The agitator is connected to the output end of the motor. The agitator agitates the water surface of the cooling pool, causing a change in the height of the cooling pool liquid surface that the floating component contacts.

[0012] The bottom end of the inner side of the aggregate portion is an arc surface that is continuously tangent to its sidewall, and the limiting strip is disposed on one sidewall of the aggregate portion.

[0013] The present invention is further configured such that: the limiting strip includes an abutting part near one end of the opening and a lifting part connected to the floating component; the limiting strip can be twisted along its axial direction; and the end of the abutting part is fixedly connected to the centrifuge cylinder; the cross-section of the abutting part is a U-shaped structure facing the opening.

[0014] The present invention is further configured such that when the raised part is close to the support plate, its end face away from the support plate can guide the liquid steel particles away from the rolling part until the liquid steel particles roll down along the end face into the cooling pool.

[0015] The present invention is further configured such that: the floating component includes several vibrating elements, a connecting rope in a ring structure, and several floats, the floats being threaded through the connecting rope; one end of the vibrating element is rotatably connected to a limiting strip, and the other end of the vibrating element is connected to the connecting rope.

[0016] The present invention is further configured such that: the agitator includes an extension rod and a wave-generating plate connected to the periphery of the extension rod, and the wave-generating plate is positioned close to the liquid surface of the cooling pool.

[0017] The present invention is further configured such that: the centrifuge cylinder includes a cylinder cover, a centrifuge disc, and a cylinder body; the cylinder body is kept in a fixed position; a plurality of openings are formed on the cylinder body; the centrifuge disc is rotatably connected to the cylinder body; the centrifuge disc is provided with a plurality of cutting strips that can cover the plurality of openings; the cylinder cover is provided with a feed inlet; the cylinder cover can cover the liquid storage space formed by the cylinder body and the centrifuge disc; the motor is fixedly mounted on the cylinder cover; and the output end of the motor is used to drive the centrifuge disc to rotate.

[0018] In summary, this utility model has the following beneficial effects: When preparing steel shot using the centrifugal method, the liquid steel particles are guided by the limiting strip to roll and form along the support plate when thrown out, which effectively ensures the roundness of the liquid steel particles until they come into contact with the air and fall into the water. Furthermore, during the rolling process of the liquid steel particles, they continuously merge with fine liquid steel particles, which effectively improves the production efficiency and cost-effectiveness of steel shot. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a structural schematic diagram of the centrifuge cylinder, motor, support plate, and agitator of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the limiting strip, vibrating component, agitating component, connecting rope, and float of this utility model.

[0023] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 6 This is a cross-sectional view of the centrifuge tube of this utility model.

[0025] In the diagram: 1. Centrifuge cylinder; 11. Cylinder cover; 12. Centrifuge disc; 121. Slitting strip; 13. Cylinder body; 131. Opening; 2. Cooling pool; 3. Motor; 4. Support plate; 41. Particle agglomeration section; 42. Rolling section; 5. Limiting strip; 51. Abutment section; 52. Lifting section; 6. Vibrating component; 7. Agitating component; 71. Wave-generating plate; 8. Connecting rope; 9. Float. Detailed Implementation

[0026] 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. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] A centrifugal production apparatus for steel shot, such as Figure 1 , Figure 2 as well as Figure 6 As shown, the centrifuge 1 is mounted on a cooling pool 2, which is a circular trench structure dug into the ground. A working platform for supporting an iron frame is installed on the ground facing the center of the cooling pool 2. A track is provided on the working platform to guide the steel cart carrying molten steel to approach the centrifuge 1. Several rows of openings 131 are opened around the perimeter of the centrifuge 1. A motor 3 is installed on the centrifuge 1 to throw liquid steel particles out of the centrifuge 1 through the openings 131. Specifically, the centrifuge 1 includes a cover 11, a centrifuge disc 12, and a cylinder 13. The cylinder 13 is kept in a fixed position, and several openings 131 are provided. On the cylinder 13, the centrifugal disc 12 is rotatably connected to the cylinder 13. The centrifugal disc 12 is provided with several cutting strips 121 that can cover several openings 131. The cylinder cover 11 is provided with a feed port. The cylinder cover 11 can cover the liquid storage space formed by the cylinder 13 and the centrifugal disc 12. The motor 3 is fixedly installed on the cylinder cover 11. The output end of the motor 3 is used to drive the centrifugal disc 12 to rotate. The centrifugal disc 12 is provided with a frustum structure in the middle to guide the molten steel to gather at the positions of several cutting strips 121. The molten steel in the molten steel car can be poured towards the feed port and quickly gathered on the periphery of the centrifugal disc 12 by the frustum structure.

[0028] like Figure 2 as well as Figure 3 As shown, a support plate 4 formed by bending thick sheet metal is fixedly installed on the periphery of the cylinder 13. The support plate 4 has an inner diameter that gradually increases from the top to the bottom. It is used to support the liquid steel particles rolling down toward the cooling pool 2. In order to group the liquid steel particles thrown out from several rows of openings 131 and the smaller defective liquid steel particles squeezed out, the upper end of the support plate 4 includes several aggregated parts 41 that protrude upward toward both sides of a row of openings 131, so that the cross-section of the aggregated parts 41 presents a V-shaped structure. The lower end of the support plate 4 is a smooth, unbent rolling part 42. The bottom end of the inner side of the aggregated part 41 is an arc surface that is continuously tangent to its side wall. The setting of the rolling part 42 allows the liquid steel particles to collect several defective liquid steel particles that come into contact with the rolling path as they gradually roll along the support plate 4.

[0029] like Figure 2 as well as Figure 5 As shown, in order to concentrate the liquid steel particles and defective liquid steel particles more on the same path, a limiting strip 5 is provided on the support plate 4 to guide the liquid steel particles thrown out from the opening 131 to fall onto the granulation part 41. The limiting strip 5 is formed of stainless steel sheet material and is provided on one side wall of the granulation part 41. The limiting strip 5 includes an abutment part 51 near the end of the opening 131. The limiting strip 5 can be twisted along its axial direction, and the end of the abutment part 51 is fixedly connected to the cylinder 13. The cross-section of the abutment part 51 is a U-shaped structure facing the opening 131.

[0030] like Figure 2 as well as Figure 4 As shown, since some of the defective liquid steel particles are even smaller, they are easy to adhere to the surface of the limiting strip 5 and gradually cool down when they hit the limiting strip 5 due to the extrusion action of the centrifuge 1. In order to ensure that the defective liquid steel particles can fall onto the support plate 4 in time and merge with the liquid steel particles, a floating component connected to the limiting strip 5 floats on the surface of the liquid in the cooling pool 2. The floating component applies a driving force to the end of the limiting strip 5 away from the hole 131 according to the change of the liquid surface height it contacts, causing the limiting strip 5 to repeatedly strike the support plate 4. Specifically, the floating component includes several vibrating elements 6, a connecting rope 8 in a ring structure, and several floats 9. Several floats 9 are threaded on the connecting rope 8. One end of the vibrating element 6 is rotatably connected to the limiting strip 5, and the other end of the vibrating element 6 is connected to the connecting rope 8. The shape of the support plate 4 makes the landing point of the liquid steel particles in the cooling pool 2 located outside the projection of the support plate 4 in the cooling pool 2.

[0031] In order to reduce the secondary contact between the limiting strip 5 and the vibrating element 6 at the lower end of the support plate 4 and the liquid steel particles that have rolled onto the support plate 4, causing deformation of the liquid steel particles, the cross-section of the limiting strip 5 away from the contact part 51 is triangular, and the cross-section of the vibrating element 6 is circular, with the diameter of the circular shape inscribed in the triangular shape and position. This section of the limiting strip 5 is the raised part 52 connected to the floating component. When the raised part 52 is pressed against the support plate 4 due to the action of the floating component, its end face away from the support plate 4 can guide the liquid steel particles away from the rolling part 42 until the liquid steel particles roll down along that end face into the cooling pool 2.

[0032] like Figure 4 As shown, in order to achieve continuous and stable liquid level fluctuations in the cooling pool 2, the output end of the motor 3 is connected to an agitator 7 via a centrifugal disc 12. The agitator 7 agitates the water surface of the cooling pool 2, causing a change in the liquid level height of the cooling pool 2 that is in contact with the floating component. Specifically, the agitator 7 includes an extension rod and a wave-making plate 71 connected to the periphery of the extension rod. The wave-making plate 71 is positioned close to the liquid surface of the cooling pool 2.

[0033] The utility model's effect: When using the centrifugal method to prepare steel shot, the liquid steel particles are guided by the limiting strip 5 to roll and form along the support plate 4 when they are thrown out, which effectively ensures the roundness of the liquid steel particles until they come into contact with the air and fall into the water. In addition, during the rolling process of the liquid steel particles, they continuously merge with small liquid steel particles, which effectively improves the production efficiency and cost-effectiveness of steel shot.

[0034] The above-mentioned centrifugal steel shot production device performs shot making, including the following steps:

[0035] S1: Using a medium-frequency induction furnace to melt steel to form molten steel;

[0036] S2: Start motor 3 to inject molten steel into the running centrifuge drum 1, causing the centrifuge drum 1 to throw out liquid steel particles in the direction of rotation of motor 3;

[0037] S3: Liquid steel particles roll successively on the surfaces of the limiting strip 5 and the support plate 4, and come into contact with air;

[0038] S4: Liquid steel particles fall into cooling pool 2 for rapid cooling and solidification, forming steel shot;

[0039] S5: After the steel shot is retrieved, it is dried using a dryer.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A centrifugal production device of steel shot, characterized in that: include: A centrifuge is mounted on a cooling pool. Several rows of openings are provided around the centrifuge. A motor is installed on the centrifuge to throw liquid steel particles out of the openings. A support plate is arranged around the periphery of the centrifuge tube. The support plate is used to support the liquid steel particles rolling down toward the cooling pool. The upper end of the support plate includes several aggregated parts protruding upwards on both sides of several rows of openings. The lower end of the support plate is a smooth, non-bending rolling part. A limiting strip is provided on the support plate, and each of the limiting strips is used to guide the liquid steel particles thrown out from the opening to fall onto the granulation part; A floating component floats on the surface of the cooling pool. The floating component applies a driving force to the end of the limiting strip away from the hole, causing the limiting strip to reciprocate and strike the support plate, depending on the height of the liquid surface it contacts. The agitator is connected to the output end of the motor. The agitator agitates the water surface of the cooling pool, causing a change in the height of the cooling pool liquid surface that the floating component contacts. The bottom end of the inner side of the aggregate portion is an arc surface that is continuously tangent to its sidewall, and the limiting strip is disposed on one sidewall of the aggregate portion.

2. A device for centrifugally producing steel shot according to claim 1, characterized in that: The limiting strip includes an abutting portion near the opening and a lifting portion connected to the floating component. The limiting strip can be twisted along its axial direction, and the end of the abutting portion is fixedly connected to the centrifuge cylinder. The cross-section of the abutting portion is a U-shaped structure facing the opening.

3. A device for centrifugally producing steel shot according to claim 2, characterized in that: When the raised part is close to the support plate, its end face away from the support plate can guide the liquid steel particles away from the rolling part until the liquid steel particles roll down along the end face into the cooling pool.

4. The steel shot centrifugal production apparatus according to claim 1, characterized by: The floating assembly includes several vibrating elements, a ring-shaped connecting rope, and several floats. The floats are threaded onto the connecting rope. One end of each vibrating element is rotatably connected to a limiting strip, and the other end of each vibrating element is connected to the connecting rope.

5. A device for centrifugally producing steel shot according to claim 1, characterized in that: The agitator includes an extension rod and a wave-generating plate connected to the periphery of the extension rod, the wave-generating plate being positioned close to the liquid surface of the cooling pool.

6. A steel shot centrifugal production apparatus according to claim 1, characterized in that: The centrifuge cylinder includes a cylinder cover, a centrifuge disc, and a cylinder body. The cylinder body is kept in a fixed position, and a plurality of openings are formed on the cylinder body. The centrifuge disc is rotatably connected to the cylinder body. The centrifuge disc is provided with a plurality of cutting strips that can cover a plurality of openings. The cylinder cover is provided with a feed inlet. The cylinder cover can cover the liquid storage space formed by the cylinder body and the centrifuge disc. The motor is fixedly mounted on the cylinder cover, and the output end of the motor is used to drive the centrifuge disc to rotate.

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