Alloy covering agent preparation device and process

Abstract

The invention relates to the technical field of covering agents, and discloses an alloy covering agent preparation device and process. The alloy covering agent preparation device comprises a machine shell, the top end of the machine shell communicates with a feeding pipe, a discharging opening is formed in the bottom end of the machine shell, and a plurality of obliquely-arranged vibrating screens are fixedly installed in the machine shell and are arranged at equal intervals from top to bottom; the fixed frame is arranged between the two layers of vibrating screens, so that a large amount of raw materials screened at the feeding ends of the vibrating screens firstly fall into the fixed frame and are discharged to the feeding end of the next layer of vibrating screen from the opening through the material conveying pipe; in this way, it is ensured that raw materials on each layer of vibrating screen gradually move from the feeding end to the discharging end along the inclined plate face, on one hand, the raw materials on each layer of vibrating screen have sufficient time to be screened, the screening effect is improved, and on the other hand, it can be avoided that in a traditional screening mechanism, the raw materials falling to the feeding end of the vibrating screen are few, and the screening efficiency is improved. And the utilization rate of the vibrating screen is low.

Description

Technical Field

[0001] The present invention relates to the technical field of covering agents, and specifically relates to an alloy covering agent preparation device and process. Background Art

[0002] An alloy covering agent is a functional material used in the metallurgical casting process, mainly used to cover the surface of molten metals (such as aluminum alloys, magnesium alloys, copper alloys, etc.), playing roles such as isolating oxidation, adsorbing impurities, heat preservation and heat insulation.

[0003] The preparation device of the covering agent should have functions such as raw material mixing, granulation, drying and screening. Among them, the screening link is generally arranged layer by layer through multiple vibrating sieves to gradually screen the granulated particle materials. These vibrating sieves are all inclined, the low end of the upper sieve faces the high end of the lower sieve, and the low end of each sieve is the discharge end. Unqualified particles flow out from the discharge end for recycling treatment; However, due to a large amount of materials entering from the feeding end of the top sieve, and the discharge end of the lower sieve is directly below the feeding end, a situation will occur where the particles that pass through the upper sieve but cannot pass through this layer of sieve carry the particles that can pass through this layer of sieve and flow out from the discharge end together, resulting in the particles that originally meet the conditions entering the recycling process, causing the problem of incomplete screening. The current treatment method is to stagger the outlet of the upper sieve and the inlet of the lower sieve in the horizontal direction. However, as the number of sieve layers increases, the length of the lower sieve has to be continuously increased. In fact, the amount of materials in the lower layer is less and less, which results in a very low utilization rate of the sieve. Based on this, the present invention purposefully provides an alloy covering agent preparation device and process that can make the screened particles be dynamically distributed on the lower sieve and efficiently utilize the sieve. Summary of the Invention

[0004] The purpose of the present invention is to provide an alloy covering agent preparation device and process for the deficiencies of the prior art to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions: An alloy covering agent preparation device includes: The casing, the top end of the casing is communicated with the feeding pipe, and the bottom end of the casing is provided with a discharge port. A plurality of inclined vibrating screens are fixedly installed in the casing. The plurality of vibrating screens are arranged at equal intervals from top to bottom. The pore diameters of the plurality of vibrating screens decrease from top to bottom. Each vibrating screen is driven by a vibration source fixedly installed on the casing to vibrate. And the lower end of each vibrating screen in the horizontal height is the discharge end. The discharge end of each vibrating screen is directly above the feeding end of the vibrating screen below it. A corresponding conveyor belt is provided at the discharge end of each vibrating screen. The conveyor belt is fixedly installed on the casing, and the discharge end of the vibrating screen faces the feeding end of the conveyor belt. The discharge end of the conveyor belt is located outside the casing; The fixed frame, a fixed frame is arranged between every two adjacent vibrating screens. The fixed frame is fixedly installed on the inner wall of the casing. The fixed frame is inclined, and the inclination angle of the fixed frame is the same as that of the vibrating screen above it. The fixed frame is directly below the feeding end of the vibrating screen above it. After the raw material is screened by the vibrating screen, it falls into the fixed frame. A feeding pipe is communicated with the fixed frame. The feeding pipe has the same inclination angle as the fixed frame. An opening is provided at the discharge end of the feeding pipe. The opening faces the feeding end of the vibrating screen below the fixed frame.

[0006] As a further solution of the present invention: the number of the feeding pipes is two, and the two feeding pipes are symmetrically arranged. The two feeding pipes are both close to the edge of the vibrating screen. The opening faces the middle of the vibrating screen.

[0007] As a further solution of the present invention: a pushing plate is slidably installed in the fixed frame, and a slope is provided in the fixed frame. The horizontal height of the pushing plate is not higher than that of the fixed frame. The pushing plate is driven by a driving component to move reciprocally. The pushing plate pushes the materials in the fixed frame into the two feeding pipes.

[0008] As a further solution of the present invention: the driving component includes a chute and a reciprocating lead screw. The chute is opened on the inner wall with a higher horizontal height of the fixed frame. The reciprocating lead screw is rotatably installed in the chute, and the reciprocating lead screw is threadedly connected with the pushing plate. The reciprocating lead screw is driven to rotate by a driving source built in the fixed frame.

[0009] As a further solution of the present invention: the two feeding pipes are both fixedly connected with a fixing plate. The fixing plate is fixedly installed on the inner wall of the casing. A transmission component is provided on the fixing plate. Rotating plates are rotatably installed in the two feeding pipes. And guide covers are fixedly installed on the two feeding pipes. The guide covers are communicated with the feeding pipes through openings. The discharge end of the guide cover faces the middle area of the feeding end of the vibrating screen. The reciprocating lead screw drives the two rotating plates to rotate synchronously through the transmission component.

[0010] As a further solution of the present invention: the transmission assembly includes a linkage rod, a first gear, a second gear, a transmission rod and a linkage assembly, the linkage rod, the first gear, the second gear and the transmission rod are all rotatably installed on the fixed plate, the linkage assembly is arranged on the fixed frame, the reciprocating screw drives the transmission rod to rotate synchronously through the linkage assembly, the linkage rod is coaxially fixedly connected to a rotating plate, the first gear is coaxially fixedly connected to another rotating plate, the second gear is meshed with the first gear, the transmission rod is transmission connected to the linkage rod through the second synchronous belt, the linkage rod is transmission connected to the second gear through the first synchronous belt, and when the rotating plate rotates, it pushes the material to fly out of the opening and hit the top plate of the material guide hood.

[0011] As a further solution of the present invention: the linkage assembly includes a square box, a first bevel gear and a second bevel gear, the square box is fixedly installed on a fixed frame, the first bevel gear and the second bevel gear are both rotatably installed in the square box, and the axis of the first bevel gear is perpendicular to the axis of the second bevel gear, the first bevel gear is meshed with the second bevel gear, the first bevel gear is coaxially fixedly connected to the reciprocating screw, and the second bevel gear is coaxially fixedly connected to the transmission rod.

[0012] As a further solution of the present invention: the discharge end of each conveyor belt is connected to a receiving box, and each conveyor belt has a feeding pipe at the feeding end corresponding to the vibrating screen, the feeding pipe is fixedly mounted on the casing, and the feeding end of the feeding pipe is located outside the casing, the discharge end of the feeding pipe faces the feeding end of the vibrating screen, the feeding pipe is connected to the receiving box, the conveyor belt transports the material into the receiving box, and then pours the material in the receiving box into the corresponding feeding pipe.

[0013] A process for preparing an alloy covering agent, the process is applied to an alloy covering agent preparation device as described above, and the process comprises the following steps: Step S1: Pour the granulated and dried granular raw materials into the casing through a feed pipe for screening; Step S2: Start the vibration source to drive the vibrating screen to vibrate. The raw materials first fall to the uppermost vibrating screen for screening. The raw materials that can pass through the pores of the vibrating screen fall to the next layer of vibrating screen. The remaining raw materials slide along the inclined plate surface of the vibrating screen to the conveyor belt and are discharged from the casing by the conveyor belt. Step S3: a large amount of raw materials screened from the feed end of the vibrating screen falls into the fixed frame and is transported to the feed end of the next layer of vibrating screen through the feed pipe; Step S4: The raw materials screened from the middle section and the discharge end of the vibrating screen directly fall to the middle section and the feed end of the next layer of vibrating screen for screening; Step S5: After being screened by multiple layers of vibrating screens, the raw materials that can pass through the pores of the lowest layer of vibrating screens meet the requirements and are discharged from the casing from the discharge port.

[0014] Beneficial effects of the present invention: 1. In the present invention, a fixed frame is provided between two vibrating screens. A large amount of raw materials screened at the feeding end of the vibrating screen first fall into the fixed frame, and are discharged from the opening through a feeding pipe to the feeding end of the next layer of vibrating screen. While the raw materials screened near the middle section and the discharging end of the vibrating screen directly fall onto the middle section and the feeding end of the next layer of vibrating screen for screening. In this way, it is ensured that the screening of raw materials on each layer of vibrating screen moves gradually from the feeding end to the discharging end along the inclined plate surface. On the one hand, it allows sufficient time for the raw materials on each layer of vibrating screen to be screened, improving the screening effect. On the other hand, it can avoid the problem in the traditional screening mechanism that there are fewer raw materials falling at the feeding end of the vibrating screen, resulting in a lower utilization rate of the vibrating screen, and avoid the problem that the screened raw materials fall at the discharging end of the vibrating screen, causing larger granular raw materials to carry the raw materials that can pass through the pores of the vibrating screen and fall onto the conveyor belt and be discharged from the casing, resulting in waste of raw materials; 2. In the present invention, the feeding pipe is arranged near the edge of the vibrating screen. This is to avoid the problem that the feeding pipe located in the central area will block the raw materials screened from the upper layer of vibrating screen, resulting in the screened raw materials not being able to fall into the central area of the vibrating screen and the screening effect deteriorating. And the opening is set to face the middle of the vibrating screen, aiming to make the raw materials directly fall into the middle area of the feeding end of the vibrating screen, thereby improving the screening effect; 3. In the present invention, a rotating plate is rotatably installed in the feeding pipe. The rotation of the rotating plate can push the material to rotate. When the material is scraped to the top of the feeding pipe by the rotating plate, it will quickly fall under the action of gravity and hit the bottom of the feeding pipe. With the continuous rotation of the rotating plate, the material can move rapidly in a spiral up-and-down impact manner in the feeding pipe, thereby assisting the feeding pipe in transporting the material. The impact of the material can also prevent the material from caking. The splash of the material is blocked by a guiding cover, and the material is guided to a more central area of the vibrating screen, improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the sectional structure of the casing in the present invention; Figure 3 is a schematic diagram of the structure of the vibrating screen and the fixed frame in the present invention; Figure 4 is a schematic diagram of the structure of the fixed frame in the present invention; Figure 5 is a schematic diagram of the position of the chute in the present invention; Figure 6 is a schematic diagram of the opening and the guiding cover in the present invention; Figure 7 is a schematic diagram of the internal structure of the square box in the present invention.

[0017] In the figure: 1, housing; 2, feeding pipe; 3, vibrating screen; 4, vibration source; 5, conveyor belt; 6, discharge port; 7, fixed frame; 8, material conveying pipe; 9, opening; 10, pushing plate; 11, slope; 12, chute; 13, reciprocating lead screw; 14, rotating plate; 15, material guiding cover; 16, linkage rod; 17, first gear; 18, second gear; 19, first synchronous belt; 20, transmission rod; 21, second synchronous belt; 22, fixing plate; 23, square box; 24, first bevel gear; 25, second bevel gear; 26, feeding pipe. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-7 As shown, the present invention is an alloy covering agent preparation device, including: A housing 1, the top of the housing 1 is communicated with a feeding pipe 2, and a discharge port 6 is opened at the bottom of the housing 1. A plurality of inclined vibrating screens 3 are fixedly installed in the housing 1. The plurality of vibrating screens 3 are arranged at equal intervals from top to bottom. The pore diameters of the plurality of vibrating screens 3 decrease from top to bottom. Each vibrating screen 3 is driven by a vibration source 4 fixedly installed on the housing 1 to vibrate. And the lower end of each vibrating screen 3 in the horizontal height is the discharge end. The discharge end of each vibrating screen 3 is directly above the feeding end of the vibrating screen 3 below it. Each vibrating screen 3 has a corresponding conveyor belt 5 at its discharge end. The conveyor belt 5 is fixedly installed on the housing 1, and the discharge end of the vibrating screen 3 faces the feeding end of the conveyor belt 5. The discharge end of the conveyor belt 5 is located outside the housing 1; A fixed frame 7, a fixed frame 7 is arranged between every two adjacent vibrating screens 3. The fixed frame 7 is fixedly installed on the inner wall of the housing 1. The fixed frame 7 is inclined, and the inclination angle of the fixed frame 7 is the same as that of the vibrating screen 3 above it. The fixed frame 7 is directly below the feeding end of the vibrating screen 3 above it. After the raw materials are screened by the vibrating screen 3, they fall into the fixed frame 7. A material conveying pipe 8 is communicated with the fixed frame 7. The material conveying pipe 8 has the same inclination angle as the fixed frame 7. An opening 9 is opened at the discharge end of the material conveying pipe 8. The opening 9 faces the feeding end of the vibrating screen 3 below the fixed frame 7.

[0020] Working principle of the present invention: First, metal raw materials are melted and mixed according to the alloy covering agent to be prepared, and additives are added. Then, cooling, granulation, and drying are carried out in sequence to form granular raw materials waiting to be screened. The granular raw materials are poured into the casing 1 through the feeding pipe 2. The vibration source 4 is started to drive the vibrating screen 3 to vibrate. The raw materials first fall onto the uppermost vibrating screen 3 for screening. The raw materials that can pass through the pores of the vibrating screen 3 fall onto the next layer of the vibrating screen 3. A large amount of raw materials screened from the feeding end of the vibrating screen 3 first fall into the fixed frame 7 and are discharged from the opening 9 through the feeding pipe 8 to the feeding end of the next layer of the vibrating screen 3. The raw materials screened near the middle section and the discharging end of the vibrating screen 3 directly fall onto the middle section and the feeding end of the next layer of the vibrating screen 3 for screening. In this way, it is ensured that the screening of the raw materials on each layer of the vibrating screen 3 moves gradually from the feeding end to the discharging end along the inclined plate surface. On the one hand, it allows sufficient time for the raw materials on each layer of the vibrating screen 3 to be screened, improving the screening effect. On the other hand, it can avoid the problem in the traditional screening mechanism that there are fewer raw materials falling onto the feeding end of the vibrating screen 3, resulting in a lower utilization rate of the vibrating screen 3. And it directly avoids the problem that a large amount of screened raw materials fall onto the discharging end of the vibrating screen 3, resulting in less screening time, insufficient screening, and the problem that larger granular raw materials are likely to carry the raw materials that can pass through the pores of the vibrating screen 3 and fall onto the conveyor belt 5 together. Finally, after being screened by multiple layers of vibrating screens 3, the raw materials that can pass through the pores of the lowermost vibrating screen 3 meet the requirements and are discharged from the casing 1 through the discharging port 6; The granular raw materials that cannot pass through the pores of the vibrating screen 3 screened out on each layer of the vibrating screen 3 will fall onto the conveyor belt 5 along the inclined plate surface, and the conveyor belt 5 will discharge the unqualified raw materials for subsequent recycling.

[0021] As Figures 1-4 shown, as a preferred embodiment of the present invention, the number of the feeding pipes 8 is two, and the two feeding pipes 8 are symmetrically arranged. Both of the two feeding pipes 8 are close to the edge of the vibrating screen 3, and the opening 9 faces the middle of the vibrating screen 3.

[0022] In actual application of this embodiment, since when the vibrating screen 3 vibrates, the vibration energy is more concentrated in the central area of the screen surface, resulting in a larger amplitude in the central area of the vibrating screen 3. The particles are strongly stimulated to vibrate, the fluidity is enhanced, and the flow rate is faster. While the amplitude in the edge area of the vibrating screen 3 is smaller, the movement energy of the particles is reduced, and the flow rate slows down. Therefore, the screening effect in the central area of the vibrating screen 3 is better. Therefore, the feeding pipe 8 is arranged close to the edge of the vibrating screen 3 to avoid the problem that the feeding pipe 8 located in the central area will block the raw materials screened from the upper layer of the vibrating screen 3, resulting in the screened raw materials not being able to fall into the central area of the vibrating screen 3 and the screening effect deteriorating. And the opening 9 is set to face the middle of the vibrating screen 3, aiming to let the raw materials directly fall into the middle area of the feeding end of the vibrating screen 3, thereby improving the screening effect.

[0023] As Figures 1-5As shown, as a preferred embodiment of the present invention, a push plate 10 is slidably installed in the fixed frame 7, and a slope 11 is provided in the fixed frame 7. The horizontal height of the push plate 10 is not higher than the fixed frame 7. The push plate 10 is driven by a driving assembly to reciprocate, and the push plate 10 pushes the material in the fixed frame 7 into the two conveying pipes 8.

[0024] In actual application of this embodiment, by setting the push plate 10 to move back and forth in the fixed frame 7, the raw materials that fall into the fixed frame 7 are pushed to move. Since the fixed frame 7 is arranged at an angle, when the material is pushed to the feeding port of the feed pipe 8, under the action of gravity, the material will automatically flow into the feed pipe 8 and then flow to the feeding end of the vibrating screen 3. The horizontal height of the push plate 10 is not higher than the fixed frame 7. This is because the pushed material will gradually accumulate and become higher. When it exceeds the height of the push plate 10, it will pass over the push plate 10 and fall back into the fixed frame 7. The accumulated material will not overflow the fixed frame 7 and fall onto the lower vibrating screen 3 near the discharge end, thereby ensuring that all the material in the fixed frame 7 can be transported to the feeding end area of the vibrating screen 3 through the feed pipe 8.

[0025] like Figures 1-5 As shown, as a preferred embodiment of the present invention, the driving assembly includes a slide groove 12 and a reciprocating screw 13, the slide groove 12 is opened on the inner wall of the fixed frame 7 with a higher horizontal height, the reciprocating screw 13 is rotatably installed in the slide groove 12, and the reciprocating screw 13 is threadedly connected to the push plate 10, and the reciprocating screw 13 is driven to rotate by a driving source built into the fixed frame 7.

[0026] In one case of this embodiment, the driving source may be a servo motor, a servo motor or other components, or other mechanisms capable of achieving rotational motion, which is not specifically limited in this embodiment.

[0027] When this embodiment is actually used, the reciprocating screw 13 is driven to rotate by a driving source, and the reciprocating screw 13 is threadedly connected to the push plate 10, so that the reciprocating screw 13 can drive the push plate 10 to move back and forth, and the reciprocating screw 13 is installed in the slide groove 12, and the slide groove 12 is located on the inner wall of the fixed frame 7 with a higher horizontal height. Since the fixed frame 7 is arranged inclined, when the raw material falls into the fixed frame 7 and accumulates, it will move along the inclined plate surface toward the entrance of the feed pipe 8 and will not accumulate to the height of the slide groove 12. This avoids the problem that the material will enter the slide groove 12 and cause the reciprocating screw 13 and the push plate 10 to be blocked.

[0028] like Figures 1-6As shown, as a preferred embodiment of the present invention, both feeding pipes 8 are fixedly connected to the fixing plate 22, and the fixing plate 22 is fixedly installed on the inner wall of the casing 1. A transmission assembly is provided on the fixing plate 22. Rotating plates 14 are rotatably installed in both feeding pipes 8, and guiding covers 15 are fixedly installed on both feeding pipes 8. The guiding cover 15 is communicated with the feeding pipe 8 through the opening 9, and the discharging end of the guiding cover 15 faces the middle area of the feeding end of the vibrating screen 3. The reciprocating lead screw 13 drives the two rotating plates 14 to rotate synchronously through the transmission assembly.

[0029] In the actual application of this embodiment, considering the problem that materials are prone to blockage when moving by gravity in the feeding pipe 8, a rotating plate 14 is rotatably installed in the feeding pipe 8. The rotation of the rotating plate 14 can push the materials to rotate. When the materials are scraped to the top of the feeding pipe 8 by the rotating plate 14, they will quickly fall under the action of gravity and hit the bottom of the feeding pipe 8. With the continuous rotation of the rotating plate 14, the materials can move rapidly in a spiral up-and-down impact manner in the feeding pipe 8, thereby assisting the feeding pipe 8 in conveying the materials. The impact of the materials can also prevent the materials from caking. Due to the rotation of the rotating plate 14, the speed of the materials flying out of the opening 9 becomes faster. Therefore, the guiding cover 15 blocks the splashing of the materials and guides the materials to a more central area of the vibrating screen 3, improving the screening efficiency.

[0030] As Figures 1-6 As shown, as a preferred embodiment of the present invention, the transmission assembly includes a linkage rod 16, a first gear 17, a second gear 18, a transmission rod 20 and a linkage assembly. The linkage rod 16, the first gear 17, the second gear 18 and the transmission rod 20 are all rotatably installed on the fixing plate 22. The linkage assembly is arranged on the fixed frame 7. The reciprocating lead screw 13 drives the transmission rod 20 to rotate synchronously through the linkage assembly. The linkage rod 16 is coaxially and fixedly connected to one rotating plate 14, the first gear 17 is coaxially and fixedly connected to the other rotating plate 14, the second gear 18 meshes with the first gear 17, the transmission rod 20 is in transmission connection with the linkage rod 16 through the second synchronous belt 21, and the linkage rod 16 is in transmission connection with the second gear 18 through the first synchronous belt 19. When the rotating plate 14 rotates, it pushes the materials to fly out of the opening 9 and hit the top plate of the guiding cover 15.

[0031] In the actual application of this embodiment, first, the rotating plate 14 rotates to push the materials to fly out of the opening 9 and hit the top plate of the guiding cover 15. This is because the materials after impact will rebound, and the larger particles are heavier than the smaller particles, so they will fall faster and can fall onto the vibrating screen 3 faster, thereby performing a primary rough screening. Since the openings 9 on both feeding pipes 8 are opposite, the rotating directions of the two rotating plates 14 on both sides must be opposite, so as to Figure 6Taking the shown example, the left turning plate 14 needs to rotate counterclockwise, while the right turning plate 14 needs to rotate clockwise. The linkage rod 16 and the second gear 18 rotate in the same direction. The second gear 18 drives the first gear 17 to rotate through meshing. Therefore, the first gear 17 and the second gear 18 rotate in opposite directions, so that the linkage rod 16 and the first gear 17 rotate in opposite directions, and further achieve the purpose of the two turning plates 14 rotating in opposite directions.

[0032] As Figure 7 Shown in the figure, as a preferred embodiment of the present invention, the linkage assembly includes a square box 23, a first bevel gear 24 and a second bevel gear 25. The square box 23 is fixedly installed on the fixed frame 7. The first bevel gear 24 and the second bevel gear 25 are both rotatably installed in the square box 23, and the axis of the first bevel gear 24 is perpendicular to the axis of the second bevel gear 25. The first bevel gear 24 meshes with the second bevel gear 25. The first bevel gear 24 is coaxially and fixedly connected with the reciprocating lead screw 13, and the second bevel gear 25 is coaxially and fixedly connected with the transmission rod 20.

[0033] In actual application of this embodiment, through the meshing of the first bevel gear 24 and the second bevel gear 25, the reciprocating lead screw 13 drives the transmission rod 20 to rotate, and the transmission rod 20 drives the linkage rod 16 to rotate through the second synchronous belt 21, finally making the two turning plates 14 rotate synchronously. In this way, when the pushing plate 10 pushes the materials in the fixed frame 7 into the two feeding pipes 8, the turning plates 14 in the feeding pipes 8 rotate to assist in feeding. While saving the power source, it ensures the smoothness of the material transportation in the feeding pipes 8.

[0034] As Figures 1-7 Shown in the figure, as a preferred embodiment of the present invention, the discharge end of each conveyor belt 5 is connected to a receiving box, and there is a feeding pipe 26 corresponding to the feeding end of the vibrating screen 3 for each conveyor belt 5. The feeding pipe 26 is fixedly installed on the machine shell 1, and the feeding end of the feeding pipe 26 is located outside the machine shell 1. The discharge end of the feeding pipe 26 faces the feeding end of the vibrating screen 3. The feeding pipe 26 is connected to the receiving box. The conveyor belt 5 transports the materials into the receiving box, and then pours the materials in the receiving box into the corresponding feeding pipe 26.

[0035] In actual application of this embodiment, when the vibrating screen 3 screens the granular raw materials, some raw materials that cannot pass through the pores will be transported onto the conveyor belt 5. The conveyor belt 5 sends these raw materials into the receiving box, and then pours the raw materials in the receiving box onto the feeding pipe 26 corresponding to this vibrating screen 3, and returns to the feeding end of the vibrating screen 3 for secondary screening. This can make the raw materials that might have been wasted be reused again, improve the utilization rate of the raw materials, and reduce the waste of raw materials.

[0036] Please refer to Figures 1-7As shown in the figure, the present invention is a preparation process of an alloy covering agent, and the process is applied to a preparation device of an alloy covering agent as described in the above embodiment. The process includes the following steps: Step S1: Pour the granulated and dried granular raw materials into the machine shell 1 through the feeding pipe 2 for screening; Step S2: Start the vibration source 4 to drive the vibrating screen 3 to vibrate. The raw materials first fall onto the topmost vibrating screen 3 for screening. The raw materials that can pass through the pores of the vibrating screen 3 fall onto the next layer of the vibrating screen 3, and the remaining raw materials slide onto the conveyor belt 5 along the inclined plate surface of the vibrating screen 3 and are discharged from the machine shell 1 by the conveyor belt 5; Step S3: A large amount of raw materials screened from the feeding end of the vibrating screen 3 fall into the fixed frame 7 and are conveyed to the feeding end of the next layer of the vibrating screen 3 through the feeding pipe 8; Step S4: The raw materials screened from the middle section and the discharging end of the vibrating screen 3 directly fall onto the middle section and the feeding end of the next layer of the vibrating screen 3 for screening; Step S5: After being screened by multiple layers of vibrating screens 3, the raw materials that can pass through the pores of the lowermost vibrating screen 3 meet the requirements and are discharged from the machine shell 1 through the discharging port 6.

[0037] The above has described a detailed description of an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An alloy covering agent preparation device, characterized in that, Including: A casing (1), the top of the casing (1) is communicated with a feeding pipe (2), and a discharge port (6) is opened at the bottom end of the casing (1). A plurality of inclined vibrating screens (3) are fixedly installed in the casing (1), and the plurality of vibrating screens (3) are arranged at equal intervals from top to bottom. The pore diameters of the plurality of vibrating screens (3) decrease from top to bottom. Each vibrating screen (3) is driven to vibrate by a vibration source (4) fixedly installed on the casing (1). And the lower end of each vibrating screen (3) with a lower horizontal height is a discharge end. The discharge end of each vibrating screen (3) is directly above the feeding end of the vibrating screen (3) below it. There is a corresponding conveyor belt (5) at the discharge end of each vibrating screen (3). The conveyor belt (5) is fixedly installed on the casing (1), and the discharge end of the vibrating screen (3) faces the feeding end of the conveyor belt (5). The discharge end of the conveyor belt (5) is located outside the casing (1). A fixed frame (7), a fixed frame (7) is arranged between every two adjacent vibrating screens (3). The fixed frame (7) is fixedly installed on the inner wall of the casing (1). The fixed frame (7) is inclined, and the inclination angle of the fixed frame (7) is the same as that of the vibrating screen (3) above it. The fixed frame (7) is directly below the feeding end of the vibrating screen (3) above it. After the raw material is screened by the vibrating screen (3), it falls into the fixed frame (7). A feeding pipe (8) is communicated with the fixed frame (7). The feeding pipe (8) has the same inclination angle as the fixed frame (7). An opening (9) is opened at the discharge end of the feeding pipe (8). The opening (9) faces the feeding end of the vibrating screen (3) below the fixed frame (7).

2. The alloy covering agent preparation device according to claim 1, characterized in that, The number of the feeding pipes (8) is two, and the two feeding pipes (8) are symmetrically arranged. Both of the two feeding pipes (8) are close to the edge of the vibrating screen (3). The opening (9) faces the middle of the vibrating screen (3).

3. The alloy covering agent preparation device according to claim 2, characterized in that, A push plate (10) is slidably installed in the fixed frame (7), and a slope (11) is arranged in the fixed frame (7). The horizontal height of the push plate (10) is not higher than that of the fixed frame (7). The push plate (10) is driven by a driving component to move reciprocally. The push plate (10) pushes the material in the fixed frame (7) into the two feeding pipes (8).

4. The alloy covering agent preparation device according to claim 3, characterized in that The driving component includes a chute (12) and a reciprocating lead screw (13). The chute (12) is opened on the inner wall with a higher horizontal height of the fixed frame (7). The reciprocating lead screw (13) is rotatably installed in the chute (12), and the reciprocating lead screw (13) is threadedly connected with the push plate (10). The reciprocating lead screw (13) is driven to rotate by a driving source built in the fixed frame (7).

5. A device for preparing an alloy covering agent according to claim 4, characterized in that, Both of the two feeding pipes (8) are fixedly connected to the fixed plate (22), the fixed plate (22) is fixedly installed on the inner wall of the casing (1), a transmission assembly is arranged on the fixed plate (22), a rotating plate (14) is rotatably installed in each of the two feeding pipes (8), and a material guiding cover (15) is fixedly installed on each of the two feeding pipes (8). The material guiding cover (15) is communicated with the feeding pipe (8) through an opening (9). The discharging end of the material guiding cover (15) faces the middle area of the feeding end of the vibrating screen (3). The reciprocating lead screw (13) drives the two rotating plates (14) to rotate synchronously through the transmission assembly.

6. The alloy covering agent preparation device according to claim 5, characterized in that, The transmission assembly includes a linkage rod (16), a first gear (17), a second gear (18), a transmission rod (20) and a linkage assembly. The linkage rod (16), the first gear (17), the second gear (18) and the transmission rod (20) are all rotatably installed on the fixed plate (22). The linkage assembly is arranged on the fixed frame (7). The reciprocating lead screw (13) drives the transmission rod (20) to rotate synchronously through the linkage assembly. The linkage rod (16) is coaxially and fixedly connected to one rotating plate (14). The first gear (17) is coaxially and fixedly connected to the other rotating plate (14). The second gear (18) meshes with the first gear (17). The transmission rod (20) is in transmission connection with the linkage rod (16) through a second synchronous belt (21). The linkage rod (16) is in transmission connection with the second gear (18) through a first synchronous belt (19). When the rotating plate (14) rotates, it pushes the material to fly out from the opening (9) and impact on the top plate of the material guiding cover (15).

7. The alloy covering agent preparation device according to claim 6, characterized in that, The linkage assembly includes a square box (23), a first bevel gear (24) and a second bevel gear (25). The square box (23) is fixedly installed on the fixed frame (7). The first bevel gear (24) and the second bevel gear (25) are both rotatably installed in the square box (23), and the axis of the first bevel gear (24) is perpendicular to the axis of the second bevel gear (25). The first bevel gear (24) meshes with the second bevel gear (25). The first bevel gear (24) is coaxially and fixedly connected to the reciprocating lead screw (13). The second bevel gear (25) is coaxially and fixedly connected to the transmission rod (20).

8. The alloy covering agent preparation device according to claim 1, characterized in that, The discharging end of each conveyor belt (5) is connected to a receiving box, and there is a feeding pipe (26) corresponding to the feeding end of the vibrating screen (3) for each conveyor belt (5). The feeding pipe (26) is fixedly installed on the casing (1), and the feeding end of the feeding pipe (26) is located outside the casing (1). The discharging end of the feeding pipe (26) faces the feeding end of the vibrating screen (3). The feeding pipe (26) is connected to the receiving box. The conveyor belt (5) conveys the material into the receiving box, and then pours the material in the receiving box into the corresponding feeding pipe (26).

9. A preparation process of an alloy covering agent, characterized in that, The process is applied to an alloy covering agent preparation device as described in any one of claims 1-8. The process includes the following steps: Step S1: Pour the granulated and dried granular raw materials into the casing (1) through the feeding pipe (2) for screening; Step S2: Start the vibration source (4) to drive the vibrating screen (3) to vibrate. The raw materials first fall onto the topmost vibrating screen (3) for screening. The raw materials that can pass through the pores of the vibrating screen (3) fall onto the next layer of the vibrating screen (3), and the remaining raw materials slide onto the conveyor belt (5) along the inclined plate surface of the vibrating screen (3) and are discharged from the casing (1) by the conveyor belt (5). Step S3: A large amount of raw materials screened from the feeding end of the vibrating screen (3) fall into the fixed frame (7) and are conveyed to the feeding end of the next layer of the vibrating screen (3) through the conveying pipe (8). Step S4: The raw materials screened from the middle section and the discharging end of the vibrating screen (3) directly fall onto the middle section and the feeding end of the next layer of the vibrating screen (3) for screening. Step S5: After being screened by multiple layers of vibrating screens (3), the raw materials that can pass through the pores of the lowermost vibrating screen (3) meet the requirements and are discharged from the casing (1) through the discharge port (6).

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