A magnetic screening and grading machine for refractory brick raw materials

Abstract

The utility model discloses a firebrick raw material magnetic separation screening machine relates to firebrick production technical field, including with the feed pipe of bin connection, install the valve on the feed pipe, the first feeding device is connected with the feed pipe lower extreme, the first feeding device output side lower side is connected with the downcomer, the downcomer lower side is connected with the second feeding device, and the second feeding device output end is connected with the magnetic separation device, the downcomer middle part is equipped with the filter screen of filtering sundries, the magnetic separation device is equipped with the magnetic roller of slanting conveyer belt and the support of slanting conveyer belt rotation, and the slanting conveyer belt upper wall lower side is equipped with the magnetic plate, the utility model discloses can filter intercept big granule sundries, and can remove the scrap iron comprehensively, and effectively remove the impurity in firebrick raw material, and then guarantee firebrick finished product quality.

Description

Technical Field

[0001] This utility model relates to the field of refractory brick production technology, and in particular to a magnetic separation screening machine for refractory brick raw materials. Background Technology

[0002] The raw materials for refractory bricks are the core determinants of their high-temperature performance, such as refractoriness, erosion resistance, and thermal stability. Refractory brick raw materials are mainly divided into three categories: main raw materials, binders, and a small amount of additives, and their proportions must be scientifically determined according to the application scenario. Main raw materials account for more than 80% of the total composition and can be classified by chemical composition into siliceous, aluminous-siliceous, magnesian, dolomite, chromium, and carbon composite types. Some may also incorporate recycled waste refractory bricks to balance costs.

[0003] During the production of refractory bricks, large particulate matter and iron filings, which are not part of the raw materials, may be mixed in and directly affect the quality of the product. Utility Model Content

[0004] The purpose of this utility model is to provide a magnetic separation and screening machine for refractory brick raw materials in order to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A magnetic separator for refractory brick raw materials includes a feed pipe connected to a silo; a valve is installed on the feed pipe; a first feeding device is connected to the lower end of the feed pipe, a discharge pipe is connected to the lower side of the output end of the first feeding device, a second feeding device is connected to the lower side of the discharge pipe, and a magnetic separator is connected to the output end of the second feeding device; a filter screen for filtering impurities is provided in the middle of the discharge pipe, and an inclined conveyor belt and a magnetic roller supporting the rotation of the inclined conveyor belt are provided inside the magnetic separator, with a magnetic plate provided on the lower side of the upper wall of the inclined conveyor belt.

[0006] Furthermore, the valve is a manual slide gate valve.

[0007] Furthermore, both the first and second feeding devices are equipped with horizontal conveyor belts.

[0008] Furthermore, the first feeding device, the second feeding device, and the magnetic separator all include a housing. The housing of the first feeding device is connected to the feed pipe and the discharge pipe; the housing of the second feeding device is connected to the discharge pipe and the housing of the magnetic separator.

[0009] Furthermore, the feed tube is tapered, with a smaller top and a larger bottom.

[0010] Furthermore, the side wall of the feed pipe is provided with an opening corresponding to the filter screen and a side plate that blocks the opening, and the filter screen is installed inside the feed pipe by bolts.

[0011] Furthermore, a slab is provided on the upper side of the horizontal conveyor belt inside the second feeding device, and the slab is connected to the lower side of the upper wall of the second feeding device by a suspension rope.

[0012] Furthermore, the magnetic separator is provided with a discharge hopper corresponding to the lower end of the inclined conveyor belt and a waste discharge hopper corresponding to the lower side of the inclined conveyor belt.

[0013] Furthermore, the magnetic separator is equipped with a scraper for removing impurities from the lower surface of the inclined conveyor belt.

[0014] Furthermore, the magnetic roller is connected to a belt drive mechanism, and the input end of the belt drive mechanism is connected to a geared motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a filter screen to filter and intercept large particles of debris. The filter screen is removable for easy cleaning. The magnetic roller and magnetic plate on the inside of the inclined conveyor belt can completely remove iron filings, preventing them from mixing into the raw materials. This effectively removes impurities from the refractory brick raw materials, thereby ensuring the quality of the finished refractory bricks. Attached Figure Description

[0016] Figure 1 This is a first-view three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a second-view three-dimensional structural diagram of the present invention.

[0018] Figure 3 This is a perspective view of the present invention.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the side panel disassembly state of this utility model.

[0021] Figure 6 This is a schematic diagram of the flat plate structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the scraper structure of this utility model.

[0023] In the diagram: 1. Feed pipe; 2. Valve; 3. First feeding device; 4. Discharge pipe; 5. Second feeding device; 6. Magnetic separator; 7. Support frame; 8. Horizontal conveyor belt; 9. Opening; 10. Side plate; 11. Filter screen; 12. Spreading plate; 13. Suspension rope; 14. Discharge hopper; 15. Waste discharge hopper; 16. Magnetic roller; 17. Inclined conveyor belt; 18. Magnetic plate; 19. Scraper; 20. Separator; 21. Gear motor; 22. Belt drive mechanism; 23. Air extraction pipe. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] Specific embodiments of the magnetic separation and screening machine for refractory brick raw materials provided by this utility model: Please see Figures 1-7 A magnetic separator for refractory brick raw materials includes a feed pipe 1 connected to a silo containing refractory brick raw materials. The feed pipe 1 is located below the silo. A valve 2 is installed in the middle of the feed pipe 1. The valve 2 is a manual slide gate valve. In some other embodiments, the valve 2 can be an electric slide gate valve. By opening and closing the valve 2, the feed pipe 1 can be controlled to feed raw materials from the silo.

[0026] A first feeding device 3 is connected to the lower end of the feed pipe 1. A discharge pipe 4 is connected to the lower side of the output end of the first feeding device 3. A second feeding device 5 is connected to the lower side of the discharge pipe 4. A magnetic separator 6 is connected to the output end of the second feeding device 5. The first feeding device 3, the second feeding device 5, and the magnetic separator 6 all include a housing. The housing of the first feeding device 3 is connected to the lower end of the feed pipe 1 and the upper end of the discharge pipe 4. The housing of the second feeding device 5 is connected to the lower end of the discharge pipe 4 and the upper end of the housing of the magnetic separator 6. The housings are connected while maintaining internal communication. A support 7 is provided on the lower side of the second feeding device 5 and the magnetic separator 6, which stably supports their upper structures under the hopper.

[0027] The feed pipe 4 is equipped with a filter screen 11 in the middle to filter out impurities. Both the first feeding device 3 and the second feeding device 5 are equipped with horizontal conveyor belts 8. The feed pipe 4 is used to install the filter screen 11 to filter large particles of impurities in the raw material. This also prevents the raw material from falling directly into the magnetic separator 6, reducing the impact energy of the falling material during magnetic separation. This allows the magnetic separator 6 to more comprehensively adsorb iron filings, preventing iron filings from mixing into the raw material.

[0028] The feed pipe 4 is tapered, wider at the bottom than the top, and the horizontal cross-section of each height of the feed pipe 4 is rectangular. The side wall of the feed pipe 4 is provided with openings 9 corresponding to the filter screen 11 and side plates 10 that block the openings 9. The side plates 10 are connected to the feed pipe 4 by bolts. Specifically, a stud is provided on the side of the middle part of the feed pipe 4, which surrounds the opening 9. The edge of the side plate 10 is provided with through holes that mate with the stud and allow the stud to pass through. Nuts are used to connect the side plate 10 to the feed pipe 4 and close the blocking opening 9.

[0029] The filter screen 11 is bolted inside the feed pipe 4. Specifically, a rectangular ring is provided in the middle of the feed pipe 4, and the edge of the filter screen 11 is connected to the rectangular ring by bolts. The side plate 10 is opened periodically to check for debris on the upper side of the internal filter screen 11, and the debris on the upper side of the filter screen 11 is cleaned to ensure that the raw material passes smoothly through the filter screen 11.

[0030] Both ends of the horizontal conveyor belt 8 are equipped with rollers that support its rotation. The shaft of one roller extends through the housing to the outside of the housing. Motors that drive the rollers are located on the outside of the first feeding device 3 and the second feeding device 5, causing the horizontal conveyor belt 8 to operate. The horizontal conveyor belt 8 of the first feeding device 3 transports the raw material falling from the feed pipe 1 to the upper end of the discharge pipe 4, where it falls through the filter screen 11. The horizontal conveyor belt 8 of the second feeding device 5 transports the raw material into the magnetic separator 6, after which the material falls.

[0031] A spreading plate 12 is provided on the upper side of the horizontal conveyor belt 8 inside the second feeding device 5. The spreading plate 12 is connected to the lower side of the upper wall of the housing of the second feeding device 5 by a suspension rope 13. Since the feed pipe 4 is a tapered pipe, the width of the horizontal conveyor belt 8 inside the second feeding device 5 is greater than the width of the horizontal conveyor belt 8 inside the first feeding device 3. The raw material falling from the feed pipe 4 lands at the upstream end of the horizontal conveyor belt 8 inside the second feeding device 5, showing a distribution state with more in the middle and less at both sides. The spreading plate 12 limits the height of the raw material on the upper side of the horizontal conveyor belt 8 inside the second feeding device 5, so that the raw material is evenly distributed. In this embodiment, the spreading plate 12 is a V-shaped plate, with the middle part closer to the upstream end, which promotes the distribution of the raw material in the middle to both edges. The spreading plate 12 flattens the raw material by gravity. The spreading plate 12 is suspended by the suspension rope 13, allowing the spreading plate 12 to swing. When subjected to strong resistance, the spreading plate 12 will not block the material conveying. Multiple spreading plates 12 can be set along the conveying direction of the horizontal conveyor belt 8 inside the second feeding device 5.

[0032] The spreading plate 12 serves to distribute the raw material evenly in the width direction, making the raw material entering the magnetic separator 6 more uniform, so that the raw material can fully contact the magnetic separator structure, improving the comprehensiveness of magnetic separation, and facilitating the magnetic separator 6 to fully and completely collect iron filings.

[0033] The magnetic separator 6 is equipped with an inclined conveyor belt 17 and a magnetic roller 16 that supports the rotation of the inclined conveyor belt 17. A magnetic plate 18 is provided on the lower side of the upper wall of the inclined conveyor belt 17, and the magnetic plate 18 supports the movement of the upper wall of the inclined conveyor belt 17. The raw material falling from the horizontal conveyor belt 8 in the second feeding device 5 falls on the upper side of the upper end of the inclined conveyor belt 17 and falls down along the inclined conveyor belt 17.

[0034] Traditional magnetic separators rely on magnetic rollers 16 to collect iron filings. However, this method is inefficient, requiring multiple magnetic rollers. Furthermore, the magnetic rollers 16 attract iron filings but are not easily scraped off for collection. In this embodiment, the magnetic rollers 16 and magnetic plates 18 attract iron filings to the surface of the inclined conveyor belt 17 from the inside, providing a large magnetic attraction area. As the raw material falls, it spreads and tumbles, allowing for full contact with the upper side of the inclined conveyor belt 17, ensuring thorough adsorption of the iron filings. When the inclined conveyor belt 17 carrying the iron filings rotates to the lower side, the inner side no longer has magnetic attraction, making it easier to scrape off and collect the iron filings.

[0035] The magnetic separator 6 is equipped with scrapers 19 for removing impurities from the lower surface of the inclined conveyor belt 17. In this embodiment, multiple scrapers 19 can be provided. Since the inclined conveyor belt 17 is not magnetically attracted when it is on the lower side, the iron filings can be easily removed. A brush is provided on the upper edge of the scraper 19 that contacts the inclined conveyor belt 17. The brush can thoroughly clean the iron filings and impurities, and causes less frictional damage to the inclined conveyor belt 17.

[0036] The magnetic separator 6 has a discharge hopper 14 and a waste discharge hopper 15 located at the lower end of the inclined conveyor belt 17. Raw materials fall into the discharge hopper 14 due to inertia and gravity after passing under the inclined conveyor belt 17 and proceed to the next process. Due to the action of the lower magnetic roller 16, iron filings move with the inclined conveyor belt 17 to its lower side and fall into the waste discharge hopper 15. A breathable cloth bag is attached to the lower side of the waste discharge hopper 15 to collect the iron filings. An inverted V-shaped partition plate 20 is provided between the upper ends of the discharge hopper 14 and the waste discharge hopper 15 inside the magnetic separator 6.

[0037] The roller shaft of the magnetic roller 16 extends outside the housing, and a belt drive mechanism 22 is connected to the shaft of the magnetic roller 16. A geared motor 21 is connected to the input end of the belt drive mechanism 22. Specifically, the geared motor 21 is mounted on the bracket 7. Two sets of belt drive mechanisms 22 are provided: one set connects two magnetic rollers 16, and the other set connects the geared motor 21 and one magnetic roller 16. In some other embodiments, a chain drive mechanism can be used instead of the belt drive mechanism 22.

[0038] The magnetic separator 6 is connected to an exhaust pipe 23 on its upper side. The exhaust pipe 23 is connected to a gas diversion device through an external pipe to extract the suspended dust inside the magnetic separator 6 and avoid dust pollution.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A magnetic separation screening machine for refractory brick raw materials, comprising a feed pipe (1) connected to a silo; characterized in that, A valve (2) is installed on the feed pipe (1); a first feeding device (3) is connected to the lower end of the feed pipe (1), a feed pipe (4) is connected to the lower side of the output end of the first feeding device (3), a second feeding device (5) is connected to the lower side of the feed pipe (4), and a magnetic separator (6) is connected to the output end of the second feeding device (5); a filter screen (11) for filtering impurities is provided in the middle of the feed pipe (4), an inclined conveyor belt (17) and a magnetic roller (16) for supporting the rotation of the inclined conveyor belt (17) are provided in the magnetic separator (6), and a magnetic plate (18) is provided on the lower side of the upper wall of the inclined conveyor belt (17).

2. The magnetic separation and screening machine for refractory brick raw materials according to claim 1, characterized in that, The valve (2) is a manual slide gate valve.

3. The magnetic separation and screening machine for refractory brick raw materials according to claim 1, characterized in that, Both the first feeding device (3) and the second feeding device (5) are equipped with horizontal conveyor belts (8).

4. The magnetic separation and screening machine for refractory brick raw materials according to claim 1, characterized in that, The first feeding device (3), the second feeding device (5) and the magnetic separator (6) all include a housing. The housing of the first feeding device (3) is connected to the feed pipe (1) and the discharge pipe (4); the housing of the second feeding device (5) is connected to the discharge pipe (4) and the housing of the magnetic separator (6).

5. The magnetic separation and screening machine for refractory brick raw materials according to claim 1, characterized in that, The feed pipe (4) is tapered, with a smaller top and a larger bottom.

6. The magnetic separation and screening machine for refractory brick raw materials according to claim 1 or 5, characterized in that, The side wall of the feed pipe (4) is provided with an opening (9) corresponding to the filter screen (11) and a side plate (10) that blocks the opening (9). The filter screen (11) is installed in the feed pipe (4) by bolts.

7. The magnetic separation and screening machine for refractory brick raw materials according to claim 3, characterized in that, A slab plate (12) is provided on the upper side of the horizontal conveyor belt (8) inside the second feeding device (5). The slab plate (12) is connected to the lower side of the upper wall of the second feeding device (5) by a suspension rope (13).

8. The magnetic separation and screening machine for refractory brick raw materials according to claim 1, characterized in that, The magnetic separator (6) is provided with a discharge hopper (14) at the lower end of the inclined conveyor belt (17) and a waste discharge hopper (15) at the lower side of the inclined conveyor belt (17).

9. The magnetic separation and screening machine for refractory brick raw materials according to claim 1 or 8, characterized in that, The magnetic separator (6) is equipped with a scraper (19) for scraping off impurities from the lower surface of the inclined conveyor belt (17).

10. The magnetic separation and screening machine for refractory brick raw materials according to claim 1, characterized in that, The magnetic roller (16) is connected to a belt drive mechanism (22), and the input end of the belt drive mechanism (22) is connected to a geared motor (21).

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