A multi-stage proportioning feeder for preparing anhydrous stemming

Abstract

The application discloses a multi-stage proportioning feeder for preparing anhydrous stemming, which comprises a vibrating group arranged on a rack, a grading sieve connected with the vibrating group, and a first discharge part, a second discharge part and a third discharge part arranged correspondingly to different screening spaces and arranged in sequence from top to bottom and comprising a first sieve screen and a second sieve screen. The application adopts "one-time screening after mixing", directly puts multiple particle size raw materials preliminarily mixed into a feeding hopper, and completes synchronous separation of three particle sizes in a single device. The process flow is greatly shortened, the use of auxiliary equipment such as an elevator, an intermediate storage bin and a multi-section conveying belt is reduced, and the compactness and integration of the overall production system are improved.

Description

Technical Field

[0001] This application relates to the technical field of preparing anhydrous gun clay, specifically to a multi-stage proportioning feeder for preparing anhydrous gun clay. Background Technology

[0002] Anhydrous taphole clay, as a key functional material used for plugging the taphole in modern blast furnace tapping operations, directly affects the continuity, safety, and production efficiency of blast furnace operation. Anhydrous taphole clay must possess multiple characteristics, including rapid hardening, resistance to high-temperature molten iron erosion, good volume stability, and ease of tapping. These characteristics largely depend on the particle size distribution of its raw materials—that is, the scientific and precise ratio of aggregates, powders, and binders of different particle sizes.

[0003] In traditional anhydrous clay production processes, material proportioning typically employs a pre-grading and then mixing method. Specifically, various raw materials must first be graded by different screening devices to obtain three or more components of coarse, medium, and fine particles that meet the requirements. These components are then fed into a mixing and grinding equipment by operators for blending.

[0004] In the aforementioned process, materials need to undergo multiple lifting, screening, and conveying processes, involving numerous pieces of equipment, a long production line, and a large floor space. Multiple screening devices, conveyor belts, large batching silos, and a complex metering and control system result in high initial investment and subsequent maintenance costs. During the multiple transfers and intermediate storage of materials, materials of different particle sizes are highly susceptible to mixing (especially in the powder stage), leading to deviations in gradation from the designed formula and affecting the final product quality stability of the clay. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the existing defects and provide a multi-stage proportioning feeder for preparing anhydrous gun clay, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a multi-stage proportioning feeder for preparing anhydrous gun clay, comprising a vibration group mounted on a frame;

[0007] A grading and screening component is connected to the vibration group. The grading and screening component includes a primary screen and a secondary screen arranged sequentially from top to bottom, as well as a first discharge component, a second discharge component, and a third discharge component respectively arranged for different screening spaces.

[0008] The second discharge component is provided on the upper surface of the primary screen and is used to output materials that have not been screened by the primary screen.

[0009] The first discharge component corresponds to the space between the primary screen and the secondary screen, and is used to output materials that have been screened by the primary screen but not by the secondary screen;

[0010] The third discharge component is positioned in the space below the secondary screen and is used to output the material screened by the secondary screen.

[0011] Furthermore, the discharge directions of the second discharge component and the first discharge component are opposite.

[0012] As a preferred technical solution of this application, the vibration group includes: a dual-axis motor, a grooved eccentric wheel, and a connecting rod. The grooved eccentric wheel is connected to the output end of the dual-axis motor, and the connecting rod is connected to the grooved eccentric wheel to transmit eccentric vibration to the grading and screening component.

[0013] As a preferred technical solution of this application, a motor mounting bracket is provided on the frame, and a dual-axis motor is fixedly mounted on the motor mounting bracket.

[0014] As a preferred technical solution of this application, the grading and screening component further includes: a base frame, disposed below the secondary screen; and a connecting rod seat, disposed on one side of the base frame, for connecting to the connecting rod.

[0015] As a preferred technical solution of this application, the two ends of the bottom frame are rotatably mounted on the frame via pivots.

[0016] As a preferred technical solution of this application, the grooved eccentric wheel is provided with a groove, and the groove is not concentric with the center hole of the grooved eccentric wheel.

[0017] As a preferred technical solution of this application, the first discharge member, the second discharge member and the third discharge member are all inclined to facilitate material guidance and discharge.

[0018] As a preferred technical solution of this application, a feed hopper is provided on the frame.

[0019] Compared with existing technologies, the advantages of this application are: This application adopts a one-time screening after mixing, directly feeding the pre-mixed raw materials of various particle sizes into the feed hopper, and completing the simultaneous separation of three particle sizes within a single device. This significantly shortens the process flow, reduces the use of auxiliary equipment such as elevators, intermediate storage silos, and multi-section conveyor belts, and improves the compactness and integration of the overall production system.

[0020] The double-layer vibrating sieving structure, consisting of a primary and a secondary screen, efficiently separates the mixed materials into coarse, medium, and fine particle sizes. This ensures that each particle is cut strictly according to the preset aperture standard, avoiding particle size mixing problems caused by transportation and storage in traditional processes. Precise particle size classification provides a high-quality raw material foundation for subsequent accurate metering and mixing, significantly improving the batch consistency and performance stability of the anhydrous taphole clay product.

[0021] The discharge layout employs a "backward + separate" configuration, with the second discharge point to the left, the third discharge point to the right, and the first discharge point centered downwards. Coarse and fine materials are discharged in opposite directions, completely isolated physically, effectively preventing mixing of coarse and medium particles near the discharge port due to airflow disturbances or material splashing. Medium-sized materials are discharged independently in the center, further avoiding contamination. This eliminates the risk of cross-mixing of materials of different particle sizes at the source, ensuring grading accuracy, and is particularly suitable for the production of anhydrous taphole clay where extremely strict gradation requirements are necessary. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this application;

[0023] Figure 2 This is the main view of this application;

[0024] Figure 3 This is the right view of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the graded screening component;

[0026] Figure 5 This is a schematic diagram of a grooved eccentric wheel structure.

[0027] In the diagram: 1. Feed hopper, 2. Second discharge component, 3. Frame, 4. Grading and screening component, 5. Motor mounting bracket, 6. Grooved eccentric wheel, 7. Dual-shaft motor, 8. Connecting rod seat, 9. Connecting rod, 10. Primary screen, 11. Secondary screen, 12. Base frame, 13. Rotating shaft, 14. Third discharge component, 15. First discharge component. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0029] Please see Figure 1-5 This application provides a technical solution: a multi-stage proportioning feeder for preparing anhydrous gun clay, wherein mixed raw materials of various particle sizes are fed into a feed hopper 1 fixed at the top of the frame 3. The lower part of the feed hopper 1 is funnel-shaped, which plays a role in collecting and initially guiding the flow, and smoothly guiding the material into the grading and screening components 4 below.

[0030] When the vibration unit is started and the dual-axis motor 7 is powered on, its two output shafts rotate synchronously, driving the grooved eccentric wheel 6 mounted on the shaft to rotate. Because the groove of the grooved eccentric wheel 6 is not concentric with the center hole, it generates a periodic centrifugal force (i.e., excitation force) when rotating. This excitation force is transmitted to the connecting rod seat 8, which is fixed to the bottom of the grading and screening component 4, through the connecting rod 9 that is hinged to it, thereby driving the entire grading and screening component 4 to perform high-frequency, small-amplitude reciprocating linear vibration on the frame 3.

[0031] Material falling from hopper 1 is evenly distributed onto primary screen 10. Under vibration, material smaller than the aperture of primary screen 10 quickly passes through and falls into the space between primary and secondary screens; while material larger than the aperture moves along the inclined surface of primary screen 10, jumping forward under vibration, and is eventually guided into the second discharge port 2. Material falling into the middle layer continues to fall onto secondary screen 11 for secondary screening. Fine material smaller than the aperture of secondary screen 11 passes through and falls into the bottom space, while medium-sized material moves along the surface of secondary screen 11 and is eventually guided into the first discharge port 15. The finest material falls directly onto the bottom frame 12 and is guided into the third discharge port 14.

[0032] Three discharge sections guide three different particle sizes of material in different directions. The discharge ports of the second discharge section 2 (coarse material) and the third discharge section 14 (fine material) have opposite directions. The second discharge section 2 tilts downward to the left, conveying the coarse material to the external left-side collection hopper A; the first discharge section 15 tilts downward to the right, conveying the medium material to the external right-side collection hopper B; the third discharge section 14 can tilt directly downward or forward downward, conveying the fine material to the external middle collection hopper C. This "reverse" discharge completely avoids the risk of mixing or splashing and cross-contamination of materials of different particle sizes at the outlet. Operators only need to install appropriate conveyor belts or weighing scales under the three collection hoppers to easily achieve precise proportioning and subsequent mixing of the three materials.

[0033] This embodiment uses a dual-shaft motor 7 instead of two single motors, ensuring the synchronization and stability of the power source and avoiding torque and abnormal wear caused by the asynchrony of the two vibration sources. The groove design on the slotted eccentric wheel 6 is not only for weight reduction, but more importantly, it allows for fine adjustment of the excitation force by adding or adjusting the position of the counterweight within the groove, thereby adapting to materials with different specific gravities and screening requirements, making it highly versatile.

[0034] The primary screen 10 and the secondary screen 11 are quickly fixed in a rigid frame by pressure plates or bolts, facilitating the replacement of individual screens. The entire grading and screening component 4 is supported on the bearing seats of the frame 3 by the rotating shafts 13 at both ends of its base frame 12.

[0035] When it is necessary to clean or replace the screen, simply disconnect the pin between the connecting rod 9 and the connecting rod seat 8. The entire grading and screening component 4 can be rotated around the rotating shaft 13 at an angle by hand or with the help of simple tools, causing it to tilt. The material in the blocked screen holes will fall off due to its own weight, making maintenance and cleaning work extremely simple and quick, greatly reducing equipment downtime.

[0036] The dual-axis motor 7 is fixedly installed on the motor mounting bracket 5 with fasteners, which facilitates the disassembly of the motor mounting bracket 5 and makes it easier for later maintenance and repair.

[0037] During use, the pre-mixed multi-particle-size raw materials are slowly and evenly fed into the feed hopper 1 to avoid overloading the screen surface due to a large amount of material being fed at once. The power supply of the dual-shaft motor 7 is turned on to start the equipment. The output shafts at both ends rotate synchronously, and the grooved eccentric wheel 6 generates stable periodic vibration. The material is naturally guided through the lower part of the funnel shape to the surface of the primary screen 10 of the grading screening component 4. Under the action of high-frequency reciprocating vibration, coarse particles larger than the aperture of the primary screen 10 jump forward along the inclined screen surface and finally enter the second discharge component 2, and are conveyed to the external left collection hopper A. Medium particles smaller than the primary screen but larger than the aperture of the secondary screen 11 pass through the screen and fall onto the secondary screen 11, and continue to move forward. They are guided by the first discharge component 15 to the external right collection hopper B. Fine particles smaller than the aperture of the secondary screen 11 pass through the screen a second time and fall into the bottom space. They are sent to the external middle collection hopper C through the third discharge component 14.

[0038] When the screen needs cleaning and replacement, disconnect the pin between the connecting rod 9 and the connecting rod seat 8. The grading and screening component 4 will tilt around the rotating shaft 13 at a certain angle, and gravity will cause the residual material and clogging particles on the screen to fall off automatically. After cleaning, reset and reinsert the pin. If the screen needs to be replaced, loosen the pressure plate bolts, remove the old screen, replace it with a new screen, and tighten it again.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage proportioning feeder for preparing anhydrous gun clay, characterized in that, Including vibration groups, The vibration assembly is mounted on the frame (3); The grading and screening component (4) is connected to the vibration group. The grading and screening component (4) includes a primary screen (10) and a secondary screen (11) arranged from top to bottom, as well as a first discharge component (15), a second discharge component (2) and a third discharge component (14) respectively arranged for different screening spaces. The second discharge component (2) is provided on the upper surface of the primary screen (10) and is used to output materials that have not been screened by the primary screen (10). The first discharge component (15) is positioned in the space between the primary screen (10) and the secondary screen (11) to output materials that have been screened by the primary screen (10) but not by the secondary screen (11); The third discharge component (14) is positioned in the space below the secondary screen (11) and is used to output the material screened by the secondary screen (11); Furthermore, the discharge directions of the second discharge member (2) and the third discharge member (14) are opposite.

2. The multi-stage proportioning feeder for preparing anhydrous gun clay according to claim 1, characterized in that, The vibration group includes a dual-axis motor (7), a grooved eccentric wheel (6), and a connecting rod (9). The grooved eccentric wheel (6) is connected to the output end of the dual-axis motor (7), and the connecting rod (9) is connected to the grooved eccentric wheel (6) to transmit eccentric vibration to the grading screening component (4).

3. The multi-stage proportioning feeder for preparing anhydrous gun clay according to claim 1, characterized in that, A motor mounting bracket (5) is provided on the frame (3), and a dual-axis motor (7) is fixedly installed on the motor mounting bracket (5).

4. The multi-stage proportioning feeder for preparing anhydrous gun clay according to claim 2, characterized in that, The grading screening component (4) further includes: a bottom frame (12), which is located below the secondary screen (11); and a connecting rod seat (8), which is located on one side of the bottom frame (12) and is used to connect with the connecting rod (9).

5. A multi-stage proportioning feeder for preparing anhydrous gun clay according to claim 4, characterized in that, The two ends of the bottom frame (12) are rotatably mounted on the frame (3) via a pivot (13).

6. The multi-stage proportioning feeder for preparing anhydrous gun clay according to claim 2, characterized in that, The grooved eccentric wheel (6) is provided with a groove, and the groove is not concentric with the center hole of the grooved eccentric wheel (6).

7. The multi-stage proportioning feeder for preparing anhydrous taphole clay according to claim 1, characterized in that, The first discharge component (15), the second discharge component (2) and the third discharge component (14) are all inclined to facilitate material guidance and discharge.

8. The multi-stage proportioning feeder for preparing anhydrous gun clay according to claim 1, characterized in that, The frame (3) is equipped with a feed hopper (1).

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