A ball feeding device for a vertical reduction tank for magnesium smelting

Abstract

The present invention relates to a material ball feeding device for a vertical reduction tank for metal magnesium smelting, comprising a device support, a conical feeding funnel is rotatably mounted on the device support, a funnel driving mechanism for driving the conical feeding funnel to rotate is arranged on the device support, the lower end of the conical feeding funnel is a feeding port, a plurality of feeding channels with the same structure are arranged on the inner wall of the conical feeding funnel, the upper end of each feeding channel is a channel feeding port, the lower end of the feeding channel is a channel discharge port with a size smaller than the feeding port, each channel discharge port is sequentially arranged along the circumference of the feeding port, the channel discharge port is connected to the feeding port, the material ball feeding device also includes a feeding tray located on the upper side of the conical feeding funnel, the feeding tray has a tray discharge port, and during the rotation of the conical feeding funnel, the material balls on the feeding tray are sequentially fed into the corresponding channel feeding port through the tray discharge port. The present invention provides a material ball feeding device for a vertical reduction tank for metal magnesium smelting, which is not easy to be blocked during the material ball feeding process.

Description

Technical Field

[0001] The invention relates to a supporting equipment in magnesium metal smelting, in particular to a material ball feeding device for a vertical reduction tank for magnesium metal smelting. Background Art

[0002] Silicon thermal magnesium smelting technology is widely used in the primary magnesium smelting industry due to its advantages such as simple process, low investment and low cost, and has become the most important magnesium smelting technology at present.

[0003] In the silicothermic magnesium smelting process, before the reduction process, the smelting raw materials (ferrosilicon, fluorite, etc.) need to be crushed, mixed, ground and balled. The final balls are called material balls. Then the material balls are put into the feed port at the upper end of the vertical reduction tank. In the vertical reduction tank, they are heated with fuel or electricity and reduced to obtain crystalline magnesium.

[0004] The existing problem of magnesium metal smelting is that the reduction reaction of magnesium metal smelting has a certain time period. After the reduction reaction, the crystalline magnesium is taken out, the reduction slag is discharged, and then the balls are put into the vertical reduction tank again. Due to the limitation of the size of the vertical reduction tank itself and in order to avoid excessive heat loss during feeding, the feed port of the vertical reduction tank is generally not made very large. If the feed port is simply fed with a funnel, the surface of the balls is not smooth, and the gathered balls are very easy to be blocked at the feed port, affecting the normal feeding. In addition, due to the high temperature of the vertical reduction tank, it is not convenient for the staff to carry out unblocking, which greatly delays the production efficiency. Summary of the invention

[0005] The object of the present invention is to provide a material ball feeding device for a vertical reduction tank for magnesium smelting, the material ball feeding process of which is not easily blocked.

[0006] In order to solve the above technical problems, the technical solution of a material ball feeding device for a vertical reduction tank for magnesium smelting in the present invention is as follows:

[0007] A material ball feeding device for a vertical reduction tank for magnesium smelting comprises a device support, on which a conical feeding funnel with a rotation axis extending in an up-down direction and a larger upper part and a smaller lower part is rotatably mounted, the device support is provided with a funnel driving mechanism for driving the conical feeding funnel to rotate, the lower end of the conical feeding funnel is a feeding port, and the inner wall of the conical feeding funnel is provided with a plurality of feeding channels with the same structure arranged in sequence along the circumferential direction, the upper end of each feeding channel is a channel feeding port, the lower end of each feeding channel is a channel discharge port with a size smaller than the feeding port, each channel discharge port is arranged in sequence along the circumference of the feeding port, and the channel discharge port is connected to the feeding port, the material ball feeding device also comprises a feeding tray located on the upper side of the conical feeding funnel, the feeding tray has a tray discharge port, and during the rotation of the conical feeding funnel, the material balls on the feeding tray are sequentially fed into the corresponding channel feeding ports through the tray discharge port.

[0008] Furthermore, the time for the material ball to roll from the channel feed inlet to the channel discharge port is the same as the time for the conical feeding funnel to rotate one circle, or the time for the material ball to roll from the channel feed inlet to the channel discharge port is less than the time for the conical feeding funnel to rotate one circle.

[0009] Furthermore, the feeding channel is a straight channel extending obliquely from top to bottom along the inner wall of the conical feeding funnel.

[0010] Furthermore, the feeding channel is an arc-shaped channel whose axis is perpendicular to the funnel wall of the conical feeding funnel, the outlet of the channel outlet is oriented at an angle of 15° to 60° to the horizontal direction, and the funnel drive mechanism is a motor drive mechanism with adjustable output speed.

[0011] Furthermore, the bottom of the feeding tray is hingedly connected to the device bracket, the hinge axis of the feeding tray extends in the front-to-back direction, the tray outlet is arranged at the right end of the feeding tray, and a tray return spring for applying an upward force to the feeding tray is arranged between the device bracket and the bottom of the feeding tray. The upper end of the conical feeding funnel is sequentially arranged along the circumferential direction with a plurality of pushing protrusions for pushing the right end of the feeding tray to intermittently flip up and down.

[0012] Furthermore, two adjacent pushing protrusions are arranged at intervals. Along the rotation direction of the conical feeding funnel, the side of the pushing protrusion facing the feeding tray is an arc-shaped guiding surface, and the side of the pushing protrusion facing away from the feeding tray is a plane arranged perpendicular to the upper end surface of the conical feeding funnel. The channel feed port of each feeding channel is arranged corresponding to the gap between the corresponding two adjacent pushing protrusions.

[0013] Furthermore, a raised arc-shaped barrier is provided at the tray discharge port.

[0014] The beneficial effects of the present invention are as follows: in the present invention, the conical feeding funnel rotates under the drive of the funnel driving mechanism, and the feeding tray feeds the material balls to the channel feed port of a feeding channel, and the material balls roll from top to bottom along the feeding channel, and then the channel feed port of the next feeding channel rotates to the tray discharge port of the feeding tray, and the material balls are fed into the next feeding channel. Since the structures of the feeding channels are the same, the rolling time of the material balls in each feeding channel is the same. Since the material balls of different feeding channels enter at different times, for each feeding channel, the time when the material balls roll out from the channel discharge port to the feeding port is staggered, and the material balls of each feeding channel will not be discharged from the feeding port at the same time, thereby ensuring that the material balls will not gather and cause blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0016] Figure 1 It is a structural schematic diagram of Embodiment 1 of the material ball feeding device of the vertical reduction tank for metal magnesium smelting in the present invention;

[0017] Figure 2 is a schematic diagram of the structure of the feeding tray in Example 1;

[0018] Figure 3 It is a schematic diagram of the coordination between the conical feeding hopper and the feeding tray in Example 1;

[0019] Figure 4 yes Figure 3 A in the enlarged view;

[0020] Figure 5 This is a diagram showing the use status of the embodiment 2 of the material ball feeding device for the vertical reduction tank for metal magnesium smelting in the present invention;

[0021] Figure 6 This is a schematic diagram of the coordination between the feeding channel and the conical feeding funnel in the top view in Example 2;

[0022] Explanation of the reference numerals in the accompanying drawings: 1. Conical feeding funnel; 2. Pushing protrusion; 3. Gap between two adjacent pushing protrusions; 4. Feeding channel; 5. Channel discharge port; 6. Material ball; 7. Channel feed port; 8. Feeding tray; 9. Feed port; 10. Hinge structure; 11. Tray discharge port; 12. Arc-shaped block; 13. Tray return spring; 14. Ring gear; 15. Gear; 16. Servo motor; 17. Channel side panel; 18. Arc-shaped guide surface; 19. Plane; 20. Feed port; 21. Vertical reduction tank for magnesium smelting. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] Embodiment 1 of a material ball feeding device for a vertical reduction tank for magnesium smelting according to the present invention is as follows Figures 1 to 4 As shown:

[0026] The utility model comprises a device support, on which a conical feeding funnel 1 with a rotation axis extending in the up-down direction and a larger upper part and a smaller lower part is rotatably mounted, and a funnel driving mechanism for driving the conical feeding funnel to rotate is arranged on the device support, and the funnel driving mechanism comprises a servo motor 16, on the motor shaft of which a gear 15 is fixed, and on the conical feeding funnel a gear ring 14 meshing with the gear is fixed, and the conical feeding funnel is driven to rotate around its own rotation axis by the servo motor.

[0027] The lower end of the conical feeding funnel is a feeding port 9, which is located just above the feeding port of the vertical reduction tank for magnesium smelting when in use, so that the material ball 6 is fed into the vertical reduction tank. A plurality of feeding channels 4 with the same structure arranged in sequence along the circumferential direction are arranged on the inner wall of the conical feeding funnel. The upper end of each feeding channel is a channel feeding port 7, and the lower end of the feeding channel is a channel discharge port 5 with a size smaller than the feeding port. The channel discharge ports of each feeding channel are arranged in sequence along the circumference of the feeding port. The feeding channel is surrounded by channel side plates 17 arranged at intervals in the circumference and the funnel wall between the two channel side plates. In this embodiment, the feeding channel is a straight channel extending obliquely from top to bottom along the inner wall of the conical feeding funnel. Therefore, in the top view direction, each feeding channel is presented with a radial distribution structure centered on the feeding port. The width of the feeding channel gradually narrows from top to bottom, and at the channel discharge port, only one material ball can pass through alone.

[0028] The channel discharge port 5 is connected to the feeding port 9. The ball feeding device also includes a feeding tray 8 located on the upper side of the conical feeding funnel. The feeding tray has a tray discharge port 11. During the rotation of the conical feeding funnel, the balls on the feeding tray are sequentially fed into the corresponding channel feed port through the tray discharge port.

[0029] In this embodiment, the bottom of the feeding tray 8 is hingedly connected to the device bracket through a hinge structure 10. The hinge structure can adopt an ordinary hinged support structure. The hinge axis of the feeding tray extends in the front-to-back direction. The tray discharge port 11 is arranged at the right end of the feeding tray. A tray reset spring 13 for applying an upward force to the feeding tray is arranged between the device bracket and the bottom of the feeding tray. The upper end of the conical feeding funnel is sequentially arranged along the circumferential direction with a plurality of push protrusions 2 for pushing the right end of the feeding tray to intermittently flip up and down.

[0030] Two adjacent push protrusions are arranged at intervals, and along the rotation direction of the conical feeding funnel, the side of the push protrusion facing the feeding tray is an arc-shaped guide surface 18, and the side of the push protrusion facing away from the feeding tray is a plane 19 vertically arranged with the upper end surface of the conical feeding funnel, and the channel feed port of each feeding channel is arranged corresponding to the gap 3 between the corresponding two adjacent push protrusions. A protruding arc-shaped block 12 is arranged at the tray discharge port.

[0031] When using, Figure 1 From the perspective, the servo motor drives the conical feeding funnel to rotate counterclockwise, and the corresponding arc-shaped guiding surface of the push protrusion cooperates with the push of the bottom of the feeding tray, so that the right end of the feeding tray flips upward, and the left end of the feeding tray applies pressure to the tray return spring, and the tray return spring compresses and stores energy. As the conical feeding funnel rotates, the push protrusion passes over the feeding tray. After the right end of the feeding tray loses the support of the push protrusion, the height of the conical feeding funnel suddenly decreases, and the tray return spring releases energy, and the height of the right end of the feeding tray quickly increases. The feeding tray drops rapidly, and the right end of the feeding tray hits the upper end surface of the conical feeding hopper between two adjacent pushing protrusions. The material balls will pass over the arc-shaped block due to inertia, thereby knocking the material balls on the right end of the feeding tray into the corresponding feeding channel. Each time, the feeding tray puts 1 to 3 material balls into the corresponding feeding channel. As the conical feeding funnel continues to rotate, the right end of the feeding tray rises again, and the tray reset spring re-stores energy. When it passes over a pushing protrusion again, the feeding tray completes feeding to the next feeding channel.

[0032] In this embodiment, the time for the material ball to roll from the channel feed port to the channel discharge port is the same as the time for the conical feeding funnel to rotate one circle. Therefore, for each rotation of the conical feeding funnel, the feeding tray only feeds the material ball into the corresponding feeding channel once. When feeding the material ball into the same feeding channel next time, the material ball in the feeding channel has been discharged through the channel discharge port, ensuring that too many material balls will not accumulate in the feeding channel, avoiding the material ball clogging in the feeding channel. The material balls in each feeding channel are not discharged through the feeding port at the same time, so the material balls can be avoided from being blocked at the feeding port. The rotation of the conical feeding funnel will drive the feeding tray to perform vibratory feeding, and can also avoid the material balls from being blocked in the feeding tray. When the feeding is completed, the conical feeding funnel stops rotating, and under the limiting effect of the arc-shaped block, the material balls will not enter the conical feeding funnel.

[0033] When there is no ball in the feeding tray, you can feed the ball to the left end of the feeding tray to replenish the ball in the feeding tray. The tray reset spring has two functions. One is that when the push protrusion passes over the feeding tray, the right end of the feeding tray can move downward quickly, so that a higher speed can be obtained to knock the ball smoothly into the corresponding feeding channel. The other function is that when feeding to the left end of the feeding tray, it can play a certain shock-absorbing role to prevent the ball from being knocked and damaged.

[0034] Embodiment 2 of a material ball feeding device for a vertical reduction tank for magnesium smelting Figures 5 and 6 As shown: Example 2 is different from Example 1 in that Figure 5 , Figure 6 As shown, in this embodiment, the feeding channel 4 is an arc-shaped channel whose axis is perpendicular to the funnel wall of the conical feeding funnel. Figure 5 Only one feeding channel 4 is shown, and the angle between the outlet direction of the channel and the horizontal direction is between 15° and 60°.

[0035] The reason why the feeding channel uses an arc channel is that the arc channel will make the material ball have a component speed in the circumferential direction when rolling out from the channel discharge port 5, so that the rotation speed of the conical feeding funnel is easily added to the circumferential component speed of the material ball. If the rotation speed of the conical feeding funnel is accelerated, the material ball will be thrown farther, and the landing point of the material ball will be far away from the axis of the vertical reduction tank 21 for magnesium metal smelting. If the rotation speed of the conical feeding funnel is slowed down, the landing point of the material ball will be closer to the axis of the vertical reduction tank 21 for magnesium metal smelting.

[0036] The funnel driving mechanism is a motor driving mechanism with adjustable output speed. By adjusting the rotation speed of the conical feeding funnel through the motor driving mechanism, the falling point of the material balls in the vertical reduction tank is changed, so that the material balls can be evenly distributed in the vertical reduction tank. The evenly distributed material balls are conducive to reducing the energy consumption of the subsequent reduction reaction. Item 20 in the figure represents the feed port 20 of the vertical reduction tank for magnesium smelting.

[0037] The feeding port is a circular feeding port, and when the channel discharge port is tangential to the feeding port, the rotation speed of the conical feeding funnel will be more easily added to the circumferential velocity of the material ball. Therefore, in other embodiments of the present invention, the channel discharge port can also be tangential to the feeding port.

[0038] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0039] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0040] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball feeding device for a vertical reduction tank for magnesium smelting, characterized in that: The device comprises a support, on which a conical feeding funnel with a rotation axis extending in the up-down direction and a larger upper part and a smaller lower part is rotatably mounted, and a funnel driving mechanism for driving the conical feeding funnel to rotate is arranged on the support, and the lower end of the conical feeding funnel is a feeding port, and a plurality of feeding channels with the same structure arranged in sequence along the circumferential direction are arranged on the inner wall of the conical feeding funnel, and the upper end of each feeding channel is a channel feeding port, and the lower end of each feeding channel is a channel discharge port with a size smaller than the feeding port, and each channel discharge port is arranged in sequence along the circumference of the feeding port, and the channel discharge port is connected to the feeding port, and the ball feeding device also comprises a feeding tray located on the upper side of the conical feeding funnel, and the feeding tray has a tray discharge port, and during the rotation of the conical feeding funnel, the balls on the feeding tray are sequentially fed into the corresponding channel feeding ports through the tray discharge port; The bottom of the feeding tray is hingedly connected to the device bracket, the hinge axis of the feeding tray extends in the front-to-back direction, the tray discharge port is arranged at the right end of the feeding tray, a tray return spring for applying an upward force to the feeding tray is arranged between the device bracket and the bottom of the feeding tray, and a plurality of push protrusions for pushing the right end of the feeding tray to be intermittently turned up and down are arranged in sequence along the circumferential direction on the upper end of the conical feeding funnel; Two adjacent pushing protrusions are arranged at intervals. Along the rotation direction of the conical feeding funnel, the side of the pushing protrusion facing the feeding tray is an arc-shaped guiding surface, and the side of the pushing protrusion facing away from the feeding tray is a plane perpendicular to the upper end surface of the conical feeding funnel. The channel feed port of each feeding channel is arranged corresponding to the gap between the corresponding two adjacent pushing protrusions.

2. The ball feeding device according to claim 1 is characterized in that: The time for the material ball to roll from the channel feed inlet to the channel discharge port is the same as the time for the conical feeding funnel to rotate one circle, or the time for the material ball to roll from the channel feed inlet to the channel discharge port is less than the time for the conical feeding funnel to rotate one circle.

3. The ball feeding device according to claim 1 is characterized in that: The feeding channel is a straight channel extending obliquely from top to bottom along the inner wall of the conical feeding funnel.

4. The ball feeding device according to claim 1 is characterized in that: The feeding channel is an arc-shaped channel with an axis perpendicular to the funnel wall of the conical feeding funnel. The outlet of the channel is oriented at an angle of 15° to 60° to the horizontal direction. The funnel driving mechanism is a motor driving mechanism with adjustable output speed.

5. The ball feeding device according to claim 1, characterized in that: A raised arc-shaped barrier is provided at the tray discharge port.

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