Fe-silicon nitride production auxiliary material feeding device

Abstract

The utility model relates to the technical field of ferro-silicon nitride production, disclose a kind of ferro-silicon nitride production auxiliary material feeding device, including feeding pipe, the top end fixed communication feeding funnel of feeding pipe, the bottom coaxial fixed communication of feeding funnel Downspout, baffle is slidably installed in feeding pipe;Coaxial inner contact and fixedly set one ration funnel in feeding pipe, the bottom coaxial fixed communication of ration funnel guide pipe, piston block is slidably installed in guide pipe coaxially;The bottom of piston block is fixed with the sliding axle of feeding pipe coaxial line;Feeding pipe is fixedly set limit plate, sliding axle penetrates limit plate and is limit sliding cooperation with limit plate;Spring is set on sliding axle, spring is fixedly set between piston block and limit plate;The bottom end of sliding axle is provided with the adjusting assembly of adjusting spring pre-compression amount;Transmission mechanism is installed on feeding pipe, baffle is transmission cooperation with piston block by transmission mechanism. The utility model realizes ration feeding by mechanical structure, and manufacturing cost and energy consumption are low, and failure rate is low, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of silicon nitride production technology, and in particular to a feeding device for auxiliary materials in the production of silicon nitride. Background Technology

[0002] In the production of silicon nitride iron, some auxiliary materials need to be added to promote the reaction, improve product performance, or meet specific process requirements. These include binders, pore-forming agents, and reaction additives.

[0003] The automatic weighing device for adding converter auxiliary materials, as described in announcement number CN214881653U, includes a storage silo. A storage pipe is installed at the bottom of the storage silo. The storage pipe is connected to a feeding pipe via a connecting seat. Both the storage pipe and the feeding pipe are equipped with a channel switch mechanism. The channel switch mechanism includes a support base, a drive motor, a transmission screw, a sliding seat, a connecting rod, and a baffle plate. The output shaft of the drive motor is connected to the transmission screw via a coupling. The transmission screw is threadedly connected to the sliding seat. The upper end of the sliding seat is connected to the baffle plate via a connecting rod. The baffle plate is installed on the storage pipe and the feeding pipe.

[0004] Based on the above technical features, the problem is that in the existing technology, too many electric components are added in order to achieve quantitative addition of auxiliary materials, which increases manufacturing costs and energy consumption, as well as the failure rate and inconvenience of use.

[0005] Therefore, it is necessary to solve the above problems by using a feeding device for auxiliary materials in the production of silicon nitride iron. Utility Model Content

[0006] The purpose of this invention is to provide a feeding device for auxiliary materials in the production of silicon nitride iron, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a feeding device for auxiliary materials in the production of silicon nitride iron, comprising a feeding pipe, the top end of the feeding pipe being fixedly connected to a feeding funnel, the bottom end of the feeding funnel being coaxially fixedly connected to a discharge pipe, and a baffle for sealing or opening the discharge pipe being slidably installed inside the feeding pipe. A metering funnel is coaxially connected and fixedly installed inside the feeding tube. The bottom of the metering funnel is coaxially fixedly connected to the guide tube. A piston block for carrying auxiliary materials is coaxially slidably installed inside the guide tube. The bottom of the piston block is fixed with a sliding shaft coaxial with the feeding tube; a limiting plate is fixedly installed inside the feeding tube, and the sliding shaft passes through the limiting plate and slides in a limiting cooperation with the limiting plate. A spring is fitted onto the sliding shaft, and the spring is fixedly disposed between the piston block and the limiting plate. The bottom end of the slide shaft is provided with an adjustment component for adjusting the pre-compression of the spring; The feeding pipe is equipped with a transmission mechanism, and the baffle is driven by the piston block through the transmission mechanism.

[0008] Preferably, the adjusting component includes a nut; the bottom end of the sliding shaft is provided with a threaded section, and the nut is threadedly connected to the threaded section; the limiting plate is located between the nut and the piston block, and the nut and the limiting plate are in limiting contact.

[0009] Preferably, the transmission mechanism includes a transmission rod, a first transmission assembly, and a second transmission assembly; two fixed blocks are fixedly installed on the outer wall of the feeding tube, and a rotating shaft perpendicular to the feeding tube is rotatably installed between the two fixed blocks; the transmission rod is fixedly connected to the rotating shaft and crosses it; a push rod is radially slidably installed inside the feeding tube, and the sliding direction of the push rod is parallel to the sliding direction of the baffle; the baffle is driven by one end of the transmission rod away from the rotating shaft through the first transmission assembly, and the push rod is driven by the other end of the transmission rod away from the rotating shaft through the second transmission assembly; the piston block is provided with a lower conical surface for abutting and driving with the push rod and with the cone facing downward.

[0010] Preferably, the first transmission assembly includes a first push shaft, which is parallel to the rotating shaft; one end of the baffle extends through the feeding pipe and has a notched relief groove, and the first push shaft is fixed at the notch of the relief groove; the transmission rod passes through the relief groove; a transmission groove is formed at the end of the transmission rod corresponding to the baffle, and the transmission groove passes through the transmission rod in a direction parallel to the rotating shaft; the first push shaft passes through the transmission groove, and the transmission rod and the first push shaft are in abutting transmission engagement.

[0011] Preferably, the second transmission assembly includes a second push shaft, which is parallel to the rotating shaft; one end of the push rod extends out of the feeding pipe, and the second push shaft is fixed to that end of the push rod; a limiting groove is formed on the end of the transmission rod corresponding to the push rod, and the push rod passes into the limiting groove; the second push shaft is placed horizontally in the limiting groove, and a sliding groove is formed on the inner wall of the limiting groove for the second push shaft to slide in a limiting manner; the transmission rod and the second push shaft are in abutting transmission cooperation.

[0012] Preferably, the piston block has an upper conical surface with the cone facing upward at the end near the metering funnel.

[0013] Preferably, a magnetic ring is fixedly sleeved on the sliding shaft, and a magnetic block that magnetically attracts the magnetic ring is fixed on the limiting plate.

[0014] The technical effects and advantages of this utility model are as follows: The auxiliary material for silicon nitride production falls onto the piston block. When the weight of the auxiliary material exceeds the preload of the spring, the piston block compresses the spring and slides down. Simultaneously, the piston block drives a baffle to block the feed pipe via a transmission mechanism. After the feed pipe is completely blocked, the amount of auxiliary material in the feed pipe and the metering funnel is fixed. The piston block continues to slide down and eventually slides out of the feed pipe. Afterward, the auxiliary material falls. As the amount of auxiliary material gradually decreases, the spring stops compressing and begins to extend and recover. At this point, the piston block slides up and gradually slides into the feed pipe. During this process, all the auxiliary material slides down from the gap between the piston block and the bottom of the feed pipe, thus completing the feeding process. Quantitative feeding is achieved through a mechanical structure, resulting in low manufacturing costs and energy consumption, reduced failure rate, and ease of use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the inside of the feeding tube of this utility model; Figure 3 This is an enlarged schematic diagram of point A in this utility model; Figure 4 This is a schematic diagram of the transmission mechanism of this utility model.

[0016] In the diagram: 1. Feeding funnel; 2. Feeding pipe; 3. Discharge pipe; 4. Baffle; 5. Metering funnel; 6. Piston block; 7. Sliding shaft; 8. Limiting plate; 9. Spring; 10. Magnet ring; 11. Threaded section; 12. Nut; 13. Transmission rod; 14. Transmission groove; 15. First push shaft; 16. Limiting groove; 17. Second push shaft; 18. Push rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figures 1 to 4 The device shown is a feeding device for auxiliary materials in the production of silicon nitride, including a feeding pipe 2. The top end of the feeding pipe 2 is fixedly connected to a feeding funnel 1, and the bottom of the feeding funnel 1 is coaxially fixedly connected to a discharge pipe 3. A baffle 4 for sealing or opening the bottom end of the discharge pipe 3 is slidably installed inside the feeding pipe 2.

[0019] A metering funnel 5 is coaxially connected and fixedly installed inside the feeding pipe 2. The bottom of the metering funnel 5 is coaxially fixedly connected to the guide pipe. A piston block 6 for carrying auxiliary materials is coaxially slidably installed inside the guide pipe. The piston block 6 consists of a cone block located above and a frustum block located below. The bottom circumference radius of the cone block is the same as the top circumference radius of the frustum block, and the top of the frustum block is the larger radius end.

[0020] The upper curved surface of the cone block is the upper conical surface with the cone tip facing upwards, and the side curved surface of the frustum block is the lower conical surface with the cone tip facing downwards.

[0021] The bottom of the piston block 6 is coaxially fixed with a sliding shaft 7 that is coaxial with the feeding pipe 2.

[0022] A limiting plate 8 is fixedly installed inside the feeding pipe 2, and the limiting plate 8 is located below the guiding pipe. The sliding shaft 7 passes through the limiting plate 8 and is in a limiting sliding fit with the limiting plate 8.

[0023] A spring 9 is fitted on the sliding shaft 7. The top end of the spring 9 is fixedly connected to the piston block 6, and the bottom end of the spring 9 is fixedly connected to the limiting plate 8.

[0024] The bottom end of the slide shaft 7 is equipped with an adjustment component for adjusting the pre-compression of the spring 9.

[0025] Specifically, the adjusting assembly includes a nut 12. A threaded section 11 is provided at the bottom end of the sliding shaft 7, and the nut 12 is fitted onto the sliding shaft 7 and threadedly connected to the threaded section 11. A limiting plate 8 is located between the nut 12 and the piston block 6, and the nut 12 abuts against the limiting plate 8 for a limiting position.

[0026] A transmission mechanism is installed on the feeding pipe 2, and the baffle 4 is driven by the piston block 6 through the transmission mechanism.

[0027] Specifically, the transmission mechanism includes a transmission rod 13, a first transmission assembly, and a second transmission assembly. Two fixed blocks are fixedly installed on the outer wall of the feeding pipe 2, and a rotating shaft perpendicular to the feeding pipe 2 is rotatably installed between the two fixed blocks. The transmission rod 13 is fixedly connected to the rotating shaft and crosses it. A push rod 18 is radially slidably installed inside the feeding pipe 2, and the sliding direction of the push rod 18 is parallel to the sliding direction of the baffle 4.

[0028] The baffle 4 is engaged with the end of the transmission rod 13, which is away from the shaft, through the first transmission assembly.

[0029] The first transmission assembly includes a first push shaft 15, which is parallel to the rotating shaft. One end of the baffle 4 extends through the feeding pipe 2 and has a notched relief groove. The first push shaft 15 is fixed to the notch of the relief groove. The transmission rod 13 passes through the relief groove. A transmission groove 14 is formed at the end of the transmission rod 13 corresponding to the baffle 4, and the transmission groove 14 passes through the transmission rod 13 in a direction parallel to the rotating shaft. The first push shaft 15 passes through the transmission groove 14, and the transmission rod 13 and the first push shaft 15 engage in abutment transmission cooperation.

[0030] The push rod 18 is driven to engage with the other end of the transmission rod 13, which is away from the pivot, via a second transmission assembly. The side surface of the frustum of the piston block 6 is used for sliding contact with the push rod 18.

[0031] The second transmission assembly includes a second push shaft 17, which is parallel to the rotating shaft. One end of a push rod 18 extends out of the feeding pipe 2, and the second push shaft 17 is fixed to that end of the push rod 18. A limiting groove 16 is formed on the corresponding end of the transmission rod 13 and the push rod 18, and the push rod 18 passes into the limiting groove 16. The second push shaft 17 is placed horizontally in the limiting groove 16, and a sliding groove is formed on the inner wall of the limiting groove 16 for the second push shaft 17 to slide and be limited. The transmission rod 13 and the second push shaft 17 are in abutting transmission engagement.

[0032] A magnetic ring 10 is fixedly sleeved on the sliding shaft 7, and a magnetic block that magnetically attracts the magnetic ring 10 is fixed on the limiting plate 8.

[0033] Working principle: When adding auxiliary materials during the production of silicon nitride using this device, press the bottom end of the transmission rod 13. The top end of the transmission rod 13 drives the baffle 4 to open the pipe opening at the bottom end of the feeding pipe 3. The bottom end of the transmission rod 13 pushes the push rod 18 to slide close to the slide shaft 7.

[0034] Next, auxiliary materials are added to the feeding funnel 1. The auxiliary materials fall into the metering funnel 5 through the feeding funnel 1 and the discharge pipe 3 and pile onto the piston block 6. As the amount of auxiliary materials gradually increases, the weight of the auxiliary materials on the piston block 6 increases. When the sum of the weight of the auxiliary materials on the piston block 6, the weight of the piston block 6, the weight of the sliding shaft 7, the weight of the nut 12, the weight of the magnetic ring 10, and the attraction force between the magnetic ring 10 and the magnetic block is greater than the sum of the elastic force of the spring 9, the friction force between the piston block 6 and the inner wall of the guide pipe, and the friction force between the sliding shaft 7 and the limiting plate 8, the piston block 6 slides down and compresses the spring 9.

[0035] When the truncated cone of piston block 6 slides out of the guide tube, the side curved surface of the truncated cone contacts the push rod 18 and then pushes the push rod 18 to slide away from the slide shaft 7. The push rod 18 then pushes the bottom end of the transmission rod 13 to rotate away from the feeding tube 2, and the top end of the transmission rod 13 to rotate towards the feeding tube 2 and pushes the baffle 4 to slide and block the bottom opening of the feeding tube 3.

[0036] When the baffle 4 completely blocks the bottom opening of the feed pipe 3, no more auxiliary materials fall, and the amount of auxiliary materials in the feed pipe and the metering funnel 5 is fixed.

[0037] Subsequently, as piston block 6 continues to slide down, the elastic force of spring 9 and the attraction between magnetic ring 10 and magnetic block both increase. The attraction between magnetic ring 10 and magnetic block provides the driving force, thereby accelerating the downward movement of piston block 6. After the frustum of piston block 6 has completely slid out of the guide tube, piston block 6 continues to slide down, and the cone of piston block 6 slides out of the guide tube, while push rod 18 disengages from the frustum. At this point, the bottom opening of the guide tube is opened, and auxiliary material falls through the gap between the cone and the guide tube.

[0038] As piston block 6 continues to move downward, the gap between the cone block and the feed tube gradually increases, thereby accelerating the descent of the auxiliary material. As the auxiliary material continues to fall, the gravitational force exerted on piston block 6 by the auxiliary material rapidly decreases.

[0039] When the sum of the forces exerted on piston block 6 by the weight of the auxiliary material, the weight of piston block 6, the weight of sliding shaft 7, the weight of nut 12, the weight of magnetic ring 10, the attraction between magnetic ring 10 and magnetic block, and the friction between sliding shaft 7 and limiting plate 8 is less than the elastic force of spring 9, spring 9 extends and pushes piston block 6 upward. Before piston block 6 reaches the guide tube, auxiliary material continues to fall from the gap between cone block and guide tube. When piston block 6 moves upward, the attraction between magnetic ring 10 and magnetic block acts as resistance, effectively slowing down the upward movement of piston block 6. This allows sufficient time for all auxiliary material to fall.

[0040] Subsequently, as piston block 6 continues to move upward, piston block 6 eventually slides into the feed tube until it is reset.

[0041] When it is necessary to adjust the amount of material fed each time, simply rotate nut 12 to make the sliding shaft 7 slide up and down. During this process, when piston block 6 slides down, it compresses spring 9, increasing the pre-compression of spring 9 and thus increasing the amount of material fed each time; when piston block 6 slides up, it extends spring 9, decreasing the pre-compression of spring 9 and thus decreasing the amount of material fed each time.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A feeding device for auxiliary materials in the production of silicon nitride iron, comprising a feeding pipe (2), characterized in that: The top end of the feeding pipe (2) is fixedly connected to the feeding funnel (1), and the bottom of the feeding funnel (1) is coaxially fixedly connected to the discharge pipe (3). A baffle (4) for blocking or opening the discharge pipe (3) is slidably installed inside the feeding pipe (2). A metering funnel (5) is coaxially connected and fixed inside the feeding tube (2). The bottom of the metering funnel (5) is coaxially connected to the guide tube. A piston block (6) for carrying auxiliary materials is coaxially slidably installed inside the guide tube. The bottom of the piston block (6) is fixed with a sliding shaft (7) coaxial with the feeding pipe (2); a limiting plate (8) is fixedly installed inside the feeding pipe (2), and the sliding shaft (7) passes through the limiting plate (8) and is limited and slidably engaged with the limiting plate (8); A spring (9) is sleeved on the sliding shaft (7), and the spring (9) is fixedly disposed between the piston block (6) and the limiting plate (8); The bottom end of the slide shaft (7) is provided with an adjustment component for adjusting the pre-compression amount of the spring (9); The feeding pipe (2) is equipped with a transmission mechanism, and the baffle (4) is driven by the transmission mechanism to cooperate with the piston block (6).

2. The feeding device for auxiliary materials in the production of silicon nitride iron according to claim 1, characterized in that: The adjusting assembly includes a nut (12); the bottom end of the sliding shaft (7) is provided with a threaded section (11), and the nut (12) is threadedly connected to the threaded section (11); the limiting plate (8) is located between the nut (12) and the piston block (6), and the nut (12) is limited and abutted against the limiting plate (8).

3. The auxiliary material feeding device for silicon nitride production according to claim 1, characterized in that: The transmission mechanism includes a transmission rod (13), a first transmission assembly, and a second transmission assembly; two fixed blocks are fixedly installed on the outer wall of the feeding pipe (2), and a rotating shaft perpendicular to the feeding pipe (2) is rotatably installed between the two fixed blocks; the transmission rod (13) is fixedly connected to the rotating shaft and crosses it; a push rod (18) is radially slidably installed inside the feeding pipe (2), and the sliding direction of the push rod (18) is parallel to the sliding direction of the baffle (4); the baffle (4) is driven to one end of the transmission rod (13) away from the rotating shaft through the first transmission assembly, and the push rod (18) is driven to the other end of the transmission rod (13) away from the rotating shaft through the second transmission assembly; the piston block (6) is provided with a lower conical surface for abutting and driving with the push rod (18) and with the cone facing downward.

4. The auxiliary material feeding device for silicon nitride production according to claim 3, characterized in that: The first transmission assembly includes a first push shaft (15), which is parallel to the rotating shaft; one end of the baffle (4) extends through the feeding pipe (2) and a notched relief groove is provided on the end, and the first push shaft (15) is fixed at the notch of the relief groove; the transmission rod (13) passes through the relief groove; a transmission groove (14) is provided on the end of the transmission rod (13) corresponding to the baffle (4), and the transmission groove (14) passes through the transmission rod (13) in a direction parallel to the rotating shaft; the first push shaft (15) passes through the transmission groove (14), and the transmission rod (13) and the first push shaft (15) abut against each other for transmission cooperation.

5. The auxiliary material feeding device for silicon nitride production according to claim 3, characterized in that: The second transmission assembly includes a second push shaft (17), which is parallel to the rotating shaft; one end of the push rod (18) extends out of the feeding pipe (2), and the second push shaft (17) is fixed to that end of the push rod (18); a limiting groove (16) is opened on the end of the transmission rod (13) corresponding to the push rod (18), and the push rod (18) is inserted into the limiting groove (16); the second push shaft (17) is placed horizontally in the limiting groove (16), and a sliding groove is opened on the inner wall of the limiting groove (16) for the second push shaft (17) to be limited and slid; the transmission rod (13) and the second push shaft (17) are in abutment transmission cooperation.

6. The auxiliary material feeding device for silicon nitride production according to claim 3, characterized in that: The piston block (6) has an upper conical surface with the cone facing upward at the end near the metering funnel (5).

7. The auxiliary material feeding device for silicon nitride production according to claim 1, characterized in that: A magnet ring (10) is fixedly sleeved on the sliding shaft (7), and a magnet block that magnetically attracts the magnet ring (10) is fixed on the limiting plate (8).

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