A coal mine use step type tooth roll crusher

Abstract

This utility model discloses a graded toothed roller crusher for coal mines, including a crushing box. A fixed toothed roller is connected inside the crushing box via bearings. A drive motor for rotating the fixed toothed roller is located on one side of the crushing box. A set of movable toothed roller guide rails is located on the front and rear sides of the crushing box, with two vertically corresponding movable toothed roller guide rails forming a set. Each set of movable toothed roller guide rails is equipped with a sliding seat that can slide left and right. A movable toothed roller is located between the two sliding seats and is rotatably connected to the sliding seat via bearings. A second drive motor for rotating the movable toothed roller is located on one side of each sliding seat. Two automatic obstacle avoidance systems for adjusting the two sliding seats are located on one side of the crushing box. A feed inlet is located on the upper surface of the crushing box, allowing the toothed roller to move within a certain range when encountering uncrushable materials during operation, greatly reducing equipment downtime and maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, specifically a graded toothed roller crusher for coal mines. Background Technology

[0002] Crushers are commonly used equipment for material crushing. Due to structural problems, the crushers currently in use can only force crush materials that are too hard, as the double toothed rollers are fixed. This can cause the crusher to jam when the material is too hard, affecting production and even damaging the crusher itself. Therefore, the improvement and innovation of crushers is a technical problem that people urgently want to solve. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome the existing defects and provide a grading toothed roller crusher for coal mines. This crusher has a simple, novel, and unique structure, and is convenient to install, maintain, and use. It reduces crusher downtime, increases production efficiency, and allows the toothed rollers to move within a certain range when encountering uncrushable materials during operation. This significantly reduces equipment downtime and maintenance time, improves crushing production efficiency, and effectively solves the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a graded toothed roller crusher for coal mines, comprising a crushing box, wherein a fixed toothed roller is connected inside the crushing box via bearings, a drive motor for rotating the fixed toothed roller is provided on one side of the crushing box, a set of movable toothed roller guide rails are provided on the front and rear sides of the crushing box respectively, two vertically corresponding movable toothed roller guide rails constitute a set, each set of movable toothed roller guide rails is provided with a sliding seat that can slide left and right, a movable toothed roller is provided between the two sliding seats, the movable toothed roller is rotatably connected to the sliding seat via bearings, a drive motor for rotating the movable toothed roller is provided on one side of one sliding seat, and two automatic obstacle avoidance systems for adjusting the two sliding seats are provided on one side of the crushing box, and a feed inlet is provided on the upper surface of the crushing box.

[0005] Furthermore, the feed inlet of the crushing box is located above the movable toothed roller and the fixed toothed roller, and a connecting boss is provided at the upper end of the feed inlet.

[0006] Furthermore, the outer sides of the fixed toothed roller and the movable toothed roller are uniformly provided with crushing teeth, which are distributed in a spiral shape, and the spiral directions of the crushing teeth on the fixed toothed roller and the movable toothed roller are opposite.

[0007] Furthermore, the automatic obstacle avoidance system includes a support with a threaded post in the middle of the support. An adjusting nut is provided at one end of the threaded post located outside the crushing chamber, and the other end of the threaded post located inside the crushing chamber is fixedly connected to one side of the sliding seat. A top spring is provided between one side of the support and one side of the sliding seat. When the movable toothed roller encounters uncrushable material between the movable and fixed toothed rollers, the movable toothed roller receives pressure and slides along the movable toothed roller guide rail through the movable toothed roller and the sliding seat, thereby increasing the distance between the movable and fixed toothed rollers and increasing the discharge port gap, thus discharging the uncrushable material. This effectively prevents material blockage and machine overload damage.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: When the movable toothed roller encounters uncrushable material between the movable and fixed toothed rollers, the movable toothed roller, under pressure, slides along the movable toothed roller guide rail via the movable toothed roller and sliding seat, thereby increasing the distance between the movable and fixed toothed rollers and increasing the discharge port gap, thus discharging the uncrushable material. This effectively prevents material blockage and machine overload damage. The rotation of drive motor one and drive motor two can drive the fixed and movable toothed rollers to rotate respectively, and the raw materials can be crushed by the fixed and movable toothed rollers. This graded toothed roller crusher for coal mines has a simple, novel, and unique structure, and is convenient to install, maintain, and use. It reduces crusher downtime, has high production efficiency, and allows the toothed rollers to move within a range when encountering uncrushable material during operation; greatly reducing equipment downtime and maintenance time and improving crushing production efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention.

[0010] In the diagram: 1 Crushing box, 2 Fixed toothed roller, 3 Drive motor 1, 4 Movable toothed roller guide rail, 5 Sliding seat, 6 Movable toothed roller, 7 Drive motor 2, 8 Automatic obstacle avoidance system, 81 Support, 82 Threaded column, 83 Adjusting nut, 84 Top spring, 9 Connecting boss, 10 Crushing tooth. Detailed Implementation

[0011] 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.

[0012] Please see Figure 1-2This utility model provides a technical solution: a graded toothed roller crusher for coal mines, including a crushing box 1. A fixed toothed roller 2 is connected inside the crushing box 1 via bearings. A drive motor 3 is provided on one side of the crushing box 1 to rotate the fixed toothed roller 2. A set of movable toothed roller guide rails 4 are provided on the front and rear sides of the crushing box 1, with two vertically corresponding movable toothed roller guide rails 4 forming a set. Each set of movable toothed roller guide rails 4 is provided with a sliding seat 5 that can slide left and right. A movable toothed roller 6 is provided between the two sliding seats 5, and the movable toothed roller 6 is rotatably connected to the sliding seat 5 via bearings. A drive motor 7 is installed on one side of a sliding seat 5 to drive the movable toothed roller 6 to rotate. Two automatic obstacle avoidance systems 8 are installed on one side of the crushing box 1 to adjust the two sliding seats 5 respectively. A feed inlet is provided on the upper surface of the crushing box 1, located above the space between the movable toothed roller 6 and the fixed toothed roller 2. A connecting boss 9 is provided at the upper end of the feed inlet. Crushing teeth 10 are evenly arranged on the outer sides of the fixed toothed roller 2 and the movable toothed roller 6. The crushing teeth 10 are spirally distributed, and the spiral directions of the crushing teeth 10 on the fixed toothed roller 2 and the movable toothed roller 6 are opposite. The dynamic obstacle avoidance system 8 includes a support 81, with a threaded post 82 slidably connected in the middle of the support 81. An adjusting nut 83 is installed at one end of the threaded post 82 located outside the crushing chamber 1, and the other end of the threaded post 82 located inside the crushing chamber 1 is fixedly connected to one side of the sliding seat 5. A top spring 84 is installed between one side of the support 81 and one side of the sliding seat 5. When the movable toothed roller 6 encounters uncrushable material between the fixed toothed roller 2 and the movable toothed roller 3, the movable toothed roller 3 receives pressure and slides along the movable toothed roller guide rail 4 via the movable toothed roller 3 and the sliding seat 5, thereby increasing the pressure between the movable toothed roller 6 and the fixed toothed roller 2. The increased distance between the toothed rollers 2 increases the discharge port gap, allowing uncrushable materials to be discharged. This effectively prevents material blockage and machine overload damage. Driven by motors 3 and 7, the fixed toothed roller 2 and movable toothed roller 6 rotate respectively, thus crushing the raw materials. This coal mine-use graded toothed roller crusher features a simple, novel, and unique structure, and is easy to install, maintain, and use. It reduces crusher downtime, increases production efficiency, and allows the toothed rollers to move within a certain range when encountering uncrushable materials during operation. This significantly reduces equipment downtime and maintenance, improving crushing production efficiency.

[0013] In operation: When uncrushable material is encountered between the movable toothed roller 6 and the fixed toothed roller 2, the movable toothed roller 3, under pressure, slides along the movable toothed roller guide 4 via the movable toothed roller 3 and the sliding seat 5, thereby increasing the distance between the movable toothed roller 6 and the fixed toothed roller 2 and increasing the discharge port gap, thus discharging the uncrushable material. This effectively prevents material blockage and machine overload damage. The rotation of drive motor 3 and drive motor 7 can drive the fixed toothed roller 2 and the movable toothed roller 6 to rotate respectively, and the fixed toothed roller 2 and the movable toothed roller 6 can crush the raw material. After the material falls between the fixed toothed roller 2 and the movable toothed roller 6 of the crusher, it is split by the crushing teeth 10 on the rollers and sheared. Then, it undergoes stretching crushing, so that the larger particles are initially crushed to a size that can be gripped by the crushing rollers. Then, the material is pushed between the toothed rollers by the crushing teeth 10. As the rollers rotate, the volume contained between the teeth of the crushing teeth 10 gradually changes from large to small. Large particles... The material is forcibly crushed or sheared as its volume gradually decreases, and the crushed material leaks through the gaps between the teeth. For materials whose particle size is still larger than the discharge particle size, they will be blocked by the crushing plate during discharge. The rotating crushing teeth 10 and the crushing plate work together to split the larger materials and forcibly remove them. At the same time, the part of the feed that is smaller than the gap between the crushing teeth 10 is directly and quickly discharged through the crushing teeth 10 and the comb plate, thus achieving the dual purpose of screening and crushing. During the use of the crusher, the crushing teeth 10 are arranged in a spiral shape on the toothed roller in the axial direction. When the two rollers rotate, they act like a rotating screen, screening out the feed material that is smaller than the required particle size and crushing the large pieces of material that exceed the required particle size. This avoids the defect of mixed crushing of materials entering the crusher. It has dual functions of screening and crushing. Within a certain range, it can complete the crushing and screening operations independently without the need for screening equipment, which greatly simplifies the process and saves equipment, personnel and infrastructure investment. This crusher utilizes shearing and tensile principles to crush materials, resulting in high efficiency and energy savings. As is well known, the compressive strength of most mineral and rock materials is far higher than their shear and tensile strength. This crusher uses shearing and tensile principles to crush materials, resulting in low energy consumption. It features extremely low over-grinding, low power consumption, and high processing capacity. Because the crusher adopts the splitting and shearing principle, it avoids the defects of material entering the crusher being mixed and squeezed. Therefore, it has the advantages of low over-grinding rate, low power consumption, and high processing capacity.

[0014] 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 graded toothed roller crusher for coal mines, comprising a crushing chamber (1), characterized in that: The crushing box (1) is connected to a fixed toothed roller (2) by a bearing inside. A drive motor (3) is provided on one side of the crushing box (1) to drive the fixed toothed roller (2) to rotate. A set of movable toothed roller guide rails (4) are provided on the front and rear sides of the crushing box (1). Two movable toothed roller guide rails (4) that are vertically and vertically corresponding are a set. A sliding seat (5) that can slide left and right is provided on both sets of movable toothed roller guide rails (4). A movable toothed roller (6) is provided between the two sliding seats (5). The movable toothed roller (6) is rotatably connected to the sliding seat (5) by a bearing. A drive motor (7) is provided on one side of a sliding seat (5) to drive the movable toothed roller (6) to rotate. Two automatic obstacle avoidance systems (8) are provided on one side of the crushing box (1) to adjust the two sliding seats (5) respectively. A feed inlet is provided on the upper surface of the crushing box (1).

2. The graded toothed roller crusher for coal mines according to claim 1, characterized in that: The feed inlet of the crushing box (1) is located above the movable toothed roller (6) and the fixed toothed roller (2), and a connecting boss (9) is provided at the upper end of the feed inlet.

3. A graded toothed roller crusher for coal mines according to claim 1, characterized in that: The fixed toothed roller (2) and the movable toothed roller (6) are uniformly provided with crushing teeth (10), which are distributed in a spiral shape, and the crushing teeth (10) on the fixed toothed roller (2) and the movable toothed roller (6) have opposite spiral directions.

4. A graded toothed roller crusher for coal mines according to claim 1, characterized in that: The automatic obstacle avoidance system (8) includes a support (81), a threaded column (82) with sliding connection is provided in the middle of the support (81), an adjusting nut (83) is provided at one end of the threaded column (82) located outside the crushing box (1), and the end of the threaded column (82) located inside the crushing box (1) is fixedly connected to one side of the sliding seat (5), and a top spring (84) is provided between one side of the support (81) and one side of the sliding seat (5).

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