Roller type crushing and screening machine for pellet production

Abstract

The utility model relates to the technical field of roller type crushing and screening machines, and discloses a roller type crushing and screening machine for pellet production, which comprises a crushing and screening machine body, a feed port, a crushing chamber, a screening chamber and a discharge port are sequentially arranged in the crushing and screening machine body from top to bottom, and two rotating rods are respectively and rotatably mounted on the inner wall of the crushing chamber. Crushing rollers are fixedly mounted on the two rotating rods; due to the fact that the inclined conical screen cover is arranged in an inclined mode, unpassed pellet particles slide towards the lower left portion on the inclined conical screen cover, the conical supporting barrel and the inclined conical screen cover are driven by the lifting screening driving mechanism to move downwards, the situation that the inclined conical screen cover is blocked is avoided, and the blocked discharging side opening is opened. Pellet particles which do not pass through are conveniently discharged out of the crushing and screening machine body through the discharging side opening and collected, the situation that blocked pellet particles need to be manually treated is avoided, and operation is easy, convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the technical field of roller crushing and screening machines, and in particular to a roller crushing and screening machine for pellet production. Background Technology

[0002] Pelletizing is one of the important methods for agglomerating ore powder. First, the ore powder is mixed with an appropriate amount of water and binder to form green pellets with uniform viscosity and sufficient strength. After drying and preheating, the green pellets are roasted in an oxidizing atmosphere to agglomerate and form pellet ore. When pellet production requires crushing, a roller crusher is usually used. After crushing, the pellets are screened to obtain the final finished product.

[0003] There is an existing roller crusher and screen for pellet production that avoids screen clogging (authorization announcement number: CN216964747U). However, this roller crusher and screen has some shortcomings in actual use: it lacks a mechanism to process pellets that have not passed through the screen, resulting in the accumulation of pellets on the screen, causing secondary clogging. Furthermore, the accumulated pellets on the screen need to be manually cleaned, which is inconvenient and reduces the practicality of the roller crusher and screen. Therefore, we propose this utility model to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a roller crushing and screening machine for pellet production, which solves the aforementioned problems.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A roller crusher and screener for pellet production includes a crusher and screener body. From top to bottom, the crusher and screener body has a feed inlet, a crushing chamber, a screening chamber, and a discharge outlet. Two rotating rods are rotatably mounted on the inner wall of the crushing chamber, and crushing rollers are fixedly mounted on each of the two rotating rods. A U-shaped mounting frame is fixedly mounted on one side of the crusher and screener body, and a crushing drive mechanism for the two rotating rods is provided on the U-shaped mounting frame. An inclined conical screen cover is movably mounted in the screening chamber, and a lifting and lowering drive mechanism for the inclined conical screen cover is provided in the screening chamber. A discharge outlet is provided on one side wall of the crusher and screener body.

[0007] Preferably, the crushing drive mechanism includes gears and a motor. Gears are fixedly installed at one end of the two rotating rods that extend through the body of the crushing and screening machine. The two gears mesh with each other. A motor is fixedly installed on one side of the U-shaped mounting bracket. The output shaft of the motor is fixedly installed on the corresponding gear. By driving the motor, the gears on the corresponding rotating rods and the crushing rollers are driven to rotate. Since the two gears mesh, the rotation of the two crushing rollers is driven synchronously to achieve the crushing of the pellets.

[0008] Preferably, the screening chamber is connected to the main body of the crushing and screening machine through the discharge side opening, and one side of the outer wall of the inclined conical screen cover is sealed on the discharge side opening; when the sealed discharge side opening is opened, it is convenient for the unpassed pellets to be discharged through the discharge side opening to the main body of the crushing and screening machine for collection.

[0009] Preferably, the lifting and sieving drive mechanism includes a conical support cylinder, a support rod frame, and an electric push rod. The conical support cylinder is fixedly installed on the bottom inner wall of the inclined conical screen cover, the support rod frame is fixedly installed on the inner wall of the screening chamber, and the electric push rod is fixedly installed on the top side of the support rod frame. The output end of the electric push rod is fixedly installed on the top inner wall of the conical support cylinder. By intermittently starting the electric push rod, the conical support cylinder and the inclined conical screen cover are moved up or down, so that the inclined conical screen cover has a lifting and sieving effect, avoiding clogging of the inclined conical screen cover.

[0010] Preferably, the inner wall of the screening chamber is provided with multiple limiting grooves, which are arranged in a circumferential array.

[0011] Preferably, limit blocks are movably installed in multiple limit grooves, and the multiple limit blocks are fixedly connected to the inclined conical screen cover; the lifting and screening adjustment of the inclined conical screen cover is realized by the multiple limit blocks on the outer wall of the inclined conical screen cover moving up and down in the corresponding limit grooves.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This roller crusher and screener for pellet production uses a crushing drive mechanism to synchronously drive the rotation of two crushing rollers to crush the pellets. The crushed pellets fall onto an inclined conical screen in the screening chamber, where they are screened. Due to the inclined design of the screen, any pellets that do not pass through slide to the lower left on the screen. Simultaneously, a lifting and lowering drive mechanism moves the conical support cylinder and the inclined conical screen downwards, preventing blockages on the screen and opening the blocked discharge side. This allows the unpassed pellets to be discharged through the discharge side into the crusher body for collection, and then returned to the crushing chamber for secondary crushing. This crusher eliminates the need for manual handling of blocked pellets, making operation simple, fast, and improving the practicality of the crusher. Attached Figure Description

[0014] Figure 1 This is a three-dimensional partial cross-sectional structural schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure in plan view of this utility model;

[0016] Figure 3 This is a partial cross-sectional view of the side of the crusher and screening machine body of this utility model;

[0017] Figure 4 This is a schematic diagram of the inclined conical screen cover of this utility model from a perspective.

[0018] In the diagram: 1. Crushing and screening machine body; 2. Feed inlet; 3. Crushing chamber; 4. Screening chamber; 5. Discharge outlet; 6. Rotating rod; 7. Crushing roller; 8. U-shaped mounting frame; 9. Gear; 10. Motor; 11. Inclined conical screen cover; 12. Conical support cylinder; 13. Support rod frame; 14. Electric push rod; 15. Discharge side opening; 16. Limiting groove; 17. Limiting block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figure 1-4A roller crusher and screener for pellet production includes a crusher body 1. The crusher body 1 has, from top to bottom, a feed inlet 2, a crushing chamber 3, a screening chamber 4, and a discharge outlet 5. Two rotating rods 6 are rotatably mounted on the inner wall of the crushing chamber 3, and crushing rollers 7 are fixedly mounted on each of the two rotating rods 6. A U-shaped mounting frame 8 is fixedly mounted on one side of the crusher body 1, and a crushing drive mechanism for the two rotating rods 6 is provided on the U-shaped mounting frame 8. An inclined conical screen cover 11 is movably installed inside the screening chamber 4, and a lifting and screening drive mechanism for the inclined conical screen cover 11 is provided inside the screening chamber 4. A discharge side outlet 15 is opened on one side wall of the crusher body 1.

[0021] Furthermore, the crushing drive mechanism includes gears 9 and a motor 10. Gears 9 are fixedly installed at one end of the two rotating rods 6 that extend outside the crushing and screening machine body 1. The two gears 9 mesh with each other. The motor 10 is fixedly installed on one side of the U-shaped mounting bracket 8. The output shaft of the motor 10 is fixedly installed on the corresponding gear 9. By driving the motor 10, the gears 9 and crushing rollers 7 on the corresponding rotating rods 6 are driven to rotate. Since the two gears 9 mesh with each other, the rotation of the two crushing rollers 7 is driven synchronously to achieve the crushing of the pellets.

[0022] Specifically, the screening chamber 4 is connected to the outside of the crushing and screening machine body 1 through the discharge side port 15, and one side of the outer wall of the inclined conical screen cover 11 is sealed on the discharge side port 15; when the sealed discharge side port 15 is opened, it is convenient for the unpassed pellets to be discharged through the discharge side port 15 to the outside of the crushing and screening machine body 1 and collected.

[0023] Specifically, the lifting and screening drive mechanism includes a conical support cylinder 12, a support rod frame 13, and an electric push rod 14. The conical support cylinder 12 is fixedly installed on the bottom inner wall of the inclined conical screen cover 11, the support rod frame 13 is fixedly installed on the inner wall of the screening chamber 4, and the electric push rod 14 is fixedly installed on the top side of the support rod frame 13. The output end of the electric push rod 14 is fixedly installed on the top inner wall of the conical support cylinder 12. By intermittently starting the electric push rod 14, the conical support cylinder 12 and the inclined conical screen cover 11 are driven to move up or down, so that the inclined conical screen cover 11 has a lifting and screening effect, avoiding the clogging of the inclined conical screen cover 11.

[0024] Furthermore, the inner wall of the screening chamber 4 is provided with multiple limiting grooves 16, which are arranged in a circular array.

[0025] Specifically, multiple limiting blocks 17 are movably installed in multiple limiting grooves 16, and the multiple limiting blocks 17 are fixedly connected to the inclined conical screen cover 11; the multiple limiting blocks 17 on the outer wall of the inclined conical screen cover 11 move up and down in the corresponding limiting grooves 16 to realize the lifting and screening adjustment of the inclined conical screen cover 11.

[0026] In operation: The pellets enter the crushing chamber 3 of the crusher body 1 through the feed inlet 2. The drive motor 10 drives the gear 9 on the corresponding rotating rod 6 and the crushing roller 7 to rotate. Because the two gears 9 mesh, they synchronously drive the rotation of the two crushing rollers 7, thus crushing the pellets. The crushed pellets fall onto the inclined conical screen 11 in the screening chamber 4. The inclined conical screen 11 screens the crushed pellets. The crushed pellets that pass through the inclined conical screen 11 are discharged through the discharge outlet 5 to be collected outside the crusher body 1. The crushed pellets that do not pass through the inclined conical screen 11 remain on the inclined conical screen 11. The inclined design of the cover 11 allows unpassed pellets to slide downwards and to the left on the inclined conical screen cover 11. Simultaneously, by activating the electric push rod 14, the conical support cylinder 12 and the inclined conical screen cover 11 are moved downwards, opening the blocked discharge side port 15. This allows the unpassed pellets to be discharged through the discharge side port 15 to the outside of the crushing and screening machine body 1 for collection, and then poured back into the crushing chamber 3 for secondary crushing. The intermittent activation of the electric push rod 14 prevents the inclined conical screen cover 11 from becoming blocked. The crushing and screening machine body 1 in this case avoids the need for manual handling of blocked pellets, making operation simple and fast, and improving the practicality of the crushing and screening machine body 1.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A roller crusher and screener for pellet production, comprising a crusher and screener body (1), characterized in that, The crushing and screening machine body (1) is provided with a feed inlet (2), a crushing chamber (3), a screening chamber (4), and a discharge outlet (5) from top to bottom. Two rotating rods (6) are rotatably installed on the inner wall of the crushing chamber (3). Crushing rollers (7) are fixedly installed on both rotating rods (6). A U-shaped mounting frame (8) is fixedly installed on one side of the crushing and screening machine body (1). A crushing drive mechanism for the two rotating rods (6) is provided on the U-shaped mounting frame (8). An inclined conical screen cover (11) is movably installed in the screening chamber (4). A lifting and screening drive mechanism for the inclined conical screen cover (11) is provided in the screening chamber (4). A discharge side opening (15) is opened on one side wall of the crushing and screening machine body (1).

2. The roller crusher and screener for pellet production according to claim 1, characterized in that, The crushing drive mechanism includes gears (9) and motors (10). Two rotating rods (6) are fixedly mounted on one end of the body of the crushing and screening machine (1). The two gears (9) mesh with each other. A motor (10) is fixedly mounted on one side of the U-shaped mounting bracket (8). The output shaft of the motor (10) is fixedly mounted on the corresponding gear (9).

3. The roller crusher and screener for pellet production according to claim 2, characterized in that, The screening chamber (4) is connected to the outside of the crushing and screening machine body (1) through the discharge side opening (15), and one side of the outer wall of the inclined conical screen cover (11) is sealed on the discharge side opening (15).

4. A roller crusher and screener for pellet production according to claim 3, characterized in that, The lifting and sieving drive mechanism includes a conical support cylinder (12), a support rod frame (13), and an electric push rod (14). The conical support cylinder (12) is fixedly installed on the bottom inner wall of the inclined conical screen cover (11), the support rod frame (13) is fixedly installed on the inner wall of the screening chamber (4), the electric push rod (14) is fixedly installed on the top side of the support rod frame (13), and the output end of the electric push rod (14) is fixedly installed on the top inner wall of the conical support cylinder (12).

5. A roller crusher and screener for pellet production according to claim 1, characterized in that, The inner wall of the screening chamber (4) is provided with multiple limiting grooves (16), which are arranged in a circular array.

6. A roller crusher and screener for pellet production according to claim 5, characterized in that, Multiple limiting slots (16) are equipped with movable limiting blocks (17), and the multiple limiting blocks (17) are fixedly connected to the inclined conical screen cover (11).

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