A double-roll mill capable of achieving uniform crushing

Abstract

This invention relates to the field of crushing equipment and discloses a double-roll mill capable of achieving uniform crushing. It includes a main body fixed above a frame, a chamber fixed to the top of the main body, and a conical discharge port fixed to the top surface of the chamber for the material to be crushed to enter. The main body is equipped with a crushing mechanism for crushing the material. The chamber contains a follow-up feeding mechanism that is drively connected to the crushing mechanism, and the follow-up feeding mechanism is located directly below the conical discharge port. This invention effectively solves the problem of uneven material distribution in traditional double-roll mills by designing a follow-up feeding mechanism below the discharge port of the double-roll mill chamber. This follow-up feeding mechanism can intermittently distribute some of the material to be crushed falling from the discharge port to both sides of the crushing mechanism, preventing material from accumulating in the center of the crushing mechanism and ensuring uniform material distribution. Uniform material distribution results in more even force distribution on the crushing mechanism during operation, reducing excessive wear on the crushing mechanism.

Description

Technical Field

[0001] This invention relates to the field of crushing equipment technology, and in particular to a double-roll mill capable of achieving uniform crushing. Background Technology

[0002] As a common crushing equipment, the double roller mill is widely used in many industries such as mining, chemical industry, building materials, and metallurgy. Its basic working principle is to crush materials by squeezing and shearing them with two relatively rotating crushing rollers. The double roller mill has the advantages of simple structure, convenient operation, stable operation and low energy consumption. It can handle a variety of materials with different hardness and particle size, so it occupies an important position in industrial production.

[0003] For example, Chinese Patent Publication No. CN108311196A discloses a double-roll crusher, which is equipped with an active roller assembly and a passive roller assembly. When hard materials pass between the active roller and the passive roller assembly, the passive roller can actively avoid them. A screen is installed below the active roller assembly and the passive roller assembly. The screen is driven by a crank-rocker mechanism to swing. A pusher plate is installed on the screen, which is driven by a cylinder. The cylinder is supplied with air by a gas generator and drives the pusher plate to reciprocate between gaps, thereby removing waste material from the screen. After the passive roller retracts, uncrushed raw materials will mix into the crushed raw materials, while unqualified waste material can be screened out through the screen.

[0004] When this application is used, after the material falls from the feed port of the machine chamber, it often accumulates directly in the center of the gap between the two crushing rollers. This is because the material falls naturally under the action of gravity, and the position of the feed port is relatively fixed, causing the material to concentrate in the central area of ​​the crushing rollers. As more material is added, the material accumulation in the central area increases, while the material in the edge area of ​​the crushing rollers is relatively less. This uneven material distribution leads to a series of problems. First, from the perspective of crushing effect, the excessive accumulation of material in the central area causes the crushing roller in that area to bear excessive pressure, which can easily cause excessive wear of the crushing roller and shorten its service life. At the same time, because the material is too concentrated, the gap between the crushing rollers may be blocked by the material, affecting the normal rotation of the crushing rollers and the smooth passage of the material, resulting in a decrease in crushing efficiency. On the other hand, there is less material in the edge area, and the crushing roller does not exert enough force on the material in that area, so it cannot fully crush the material, resulting in uneven particle size of the crushed material, which affects the quality of the product. It is necessary to provide a double-roller mill that can achieve uniform crushing to solve the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a double-roll mill capable of achieving uniform crushing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a double-roll mill capable of uniform material distribution and uniform crushing is designed.

[0007] Based on the above ideas, the present invention provides the following technical solution: a double roller mill capable of uniform crushing, comprising a main body fixed above the frame, a chamber fixed on the top of the main body, and a conical discharge port fixed on the top surface of the chamber for the material to be crushed to enter. The main body is provided with a crushing mechanism for crushing the material, and the chamber is provided with a follower feeding mechanism that is drivenly connected to the crushing mechanism, and the follower feeding mechanism is located directly below the conical discharge port. When the crushing mechanism is started, the material can be intermittently fed to both sides of the crushing mechanism through the follower feeding mechanism.

[0008] As a further embodiment of the present invention: the crushing mechanism includes two crushing rollers rotatably mounted inside the main body and a servo motor fixedly mounted on the main body. The ends of the two crushing rollers are fixedly mounted with main shafts, and one of the crushing rollers is fixedly connected to the output shaft of the servo motor. The outer surfaces of the two main shafts are fixedly fitted with mutually meshing gears.

[0009] As a further embodiment of the present invention: the follow-up fabric feeding mechanism includes an inclined fabric feeding plate, a transmission rod, a bearing seat, a follower wheel, and a support guide rod; two inclined fabric feeding plates are symmetrically arranged inside the machine compartment and at the bottom of the conical feed inlet; the transmission rod is rotatably mounted inside the machine compartment through two bearing seats; the end of the transmission rod passes through the machine compartment and is fixedly mounted with a follower wheel; the follower wheel and one of the main shafts are connected by a transmission belt; the surface of the inclined fabric feeding plate is fixed with a follower plate limited by the support guide rod; after the transmission rod rotates, it can drive the two follower plates to move horizontally back and forth through the support guide rod.

[0010] As a further embodiment of the present invention: the two support guide rods are laterally fixed to the inner side of the cabin and laterally pass through the two follower plates to guide and support the two follower plates.

[0011] As a further aspect of the present invention: the transmission rod consists of five parts from left to right: a front rod, a left reciprocating lead screw, a middle rod, a right reciprocating lead screw, and a rear rod, and the five parts are welded and fixed into a rotatable whole; the middle rod is located at the center of the transmission rod, and the left and right reciprocating lead screws are located on the left and right sides of the middle rod, respectively, for driving a follower plate to move laterally.

[0012] As a further aspect of the present invention: the surfaces of the left reciprocating lead screw and the right reciprocating lead screw are both provided with reciprocating thread grooves, the front side of the follower plate is rotatably mounted with a movable slide, and the inner side of the movable slide is rotatably mounted with a sliding protrusion that slides in cooperation with the reciprocating thread groove. When the left reciprocating lead screw and the right reciprocating lead screw rotate, the sliding protrusion will reciprocate laterally within the reciprocating thread groove.

[0013] As a further aspect of the present invention: the reciprocating thread groove includes a left thread and a right thread, and the ends of the groove of the left thread and the groove of the right thread merge and smoothly transition to form a reversing groove for the left and right threads. When the left reciprocating screw and the right reciprocating screw rotate, the follower plate can be driven to move horizontally reciprocally along the axial direction of the left reciprocating screw and the right reciprocating screw through the reciprocating thread groove.

[0014] As a further aspect of the present invention: the inner side of the engine compartment is also provided with a cleaning mechanism that is connected to the rear rod or the front rod in a transmission manner, and the cleaning mechanism is in movable contact with the inner wall of the conical discharge port; when the rear rod or the front rod rotates through the cleaning mechanism, the inner wall of the conical discharge port can be cleaned.

[0015] As a further embodiment of the present invention: the cleaning mechanism includes a spiral bevel gear ring rotatably mounted on the engine compartment, a side block fixed to the inner wall of the spiral bevel gear ring, and an L-shaped cleaning strip fixed to the top of the side block and extending to the inner side of the conical discharge port. The spiral bevel gear ring and the rear rod or the front rod are provided with a linkage structure.

[0016] As a further embodiment of the present invention: the linkage structure includes a bearing housing two fixed on the engine compartment and a linkage shaft rotatably mounted on the bearing housing two. Both the ends of the linkage shaft and the rear rod are fixed with pulleys, and the two pulleys are connected by a linkage belt drive. The end of the linkage shaft away from the pulley is fixedly mounted with a bevel gear meshing with a spiral bevel gear ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The roller mill of the present invention, which can achieve uniform crushing, effectively solves the problem of uneven material distribution in traditional roller mills by designing a follow-up material distribution mechanism below the feed inlet of the roller mill chamber. This follow-up material distribution mechanism can intermittently distribute part of the material to be crushed falling from the feed inlet to both sides of the crushing mechanism, avoiding the material from accumulating in the center of the crushing mechanism and ensuring the uniformity of material distribution. The uniform material distribution makes the crushing mechanism more evenly stressed during operation, reducing excessive wear of the crushing mechanism, extending the service life of the crushing mechanism, and reducing the maintenance cost of the equipment.

[0018] Meanwhile, since the material can be evenly distributed on the crushing mechanism, it is not easy to be blocked by the material, which ensures the normal rotation of the crushing mechanism and the smooth passage of the material, thus improving the crushing efficiency. In addition, the uniform material distribution makes the particle size of the crushed material more uniform, which can meet the needs of production processes with high requirements for material particle size, reduce the secondary crushing or screening process, reduce production costs, and improve production efficiency. Moreover, the present invention has a simple structure and is directly linked to the original transmission mechanism of the roller mill, without the need for an additional power source, which is low in cost and easy to implement and promote. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cabin of the present invention; Figure 3 This is a schematic diagram of the structure of the follow-up fabric mechanism of the present invention; Figure 4 This is a partial enlarged view of the connection between the movable carriage and the right reciprocating lead screw of the present invention; Figure 5 This is a schematic diagram of the structure of the follower plate of the present invention; Figure 6 This is a schematic diagram of the internal structure of the cabin according to Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the follow-up fabric feeding mechanism and cleaning mechanism in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the follow-up fabric mechanism and cleaning mechanism from another perspective in Embodiment 2 of the present invention; In the diagram: 1. Main body; 2. Cabin; 3. Conical discharge port; 41. Servo motor; 42. Crushing roller; 43. Main shaft; 51. Inclined feeding plate; 52. Transmission rod; 521. Front rod; 522. Rear rod; 523. Middle rod; 524. Left reciprocating screw; 525. Right reciprocating screw; 53. Bearing seat one; 54. Follower wheel; 55. Transmission belt; 56. Follower plate; 561. Movable slide; 562. Sliding protrusion; 57. Support guide rod; 6. Cleaning mechanism; 61. Spiral bevel gear ring; 62. Side block; 63. L-shaped cleaning strip; 64. Bearing seat two; 65. Bevel gear; 66. Pulley; 67. Linkage belt; 68. Linkage shaft. Detailed Implementation

[0020] Example 1: Please see Figures 1 to 5 This invention provides a roller mill that can achieve uniform crushing. It is mainly used to distribute material evenly to both sides of the crushing rollers after the material is fed from the feed port of the roller mill, thereby avoiding the material from accumulating in the center of the gap between the two crushing rollers, ensuring the uniformity of the material distribution, thereby improving the crushing effect and achieving uniform crushing.

[0021] Specifically, such as Figure 1As shown, the roller mill includes a main body 1 and a crushing mechanism. During use, the main body 1 is bolted to the top of a frame, while the frame below the main body 1 is set on the ground, providing stable support for the main body 1. The crushing mechanism includes a servo motor 41 bolted to the top of the frame and located on the right side of the main body 1, and two crushing rollers 42 rotatably mounted inside the main body 1 via bearings. The output end of the servo motor 41 extends through the inside of the main body 1 and is fixedly connected to the right end of one of the crushing rollers 42, thus realizing power transmission between the servo motor 41 and one of the crushing rollers 42. Each of the two crushing rollers 42 has a main shaft 43 fixed at its left end, which extends through to the left side of the main body 1. The main shaft 43 passes through the inner side of the bearing between the crushing roller 42 and the inner wall of the main body 1, without affecting the normal rotation of the crushing roller 42 within the main body 1. The outer surfaces of the two main shafts 43 are fixedly fitted with meshing gears, so that after the servo motor 41 starts, it will first drive one of the crushing rollers 42 to rotate, and the main shafts 43 at the left end of the two crushing rollers 42 will rotate synchronously under the two meshing gears, thereby achieving synchronous rotation of the two crushing rollers 42 and thus crushing the material.

[0022] Among them, such as Figure 2 As shown, a chamber 2 is fixed to the top of the main body 1, and a conical feeding port 3 is fixed to the top of the chamber 2. The bottom end of the conical feeding port 3 is connected to the inside of the chamber 2, which is used to guide the material to be crushed into the inside of the main body 1 through the conical feeding port 3. The material to be crushed falls into the inside of the main body 1 and will fall between the two crushing rollers 42 for crushing. The bottom surface of the main body 1 is open, and the crushed material will fall naturally and fall from the gap of the frame. In actual application, a receiving device can be used to receive the material.

[0023] Reference Figures 1 to 2 The device also includes a follow-up feeding mechanism installed in the machine compartment 2, which can intermittently feed the material falling from the conical feed port 3 to both sides, so as to prevent the material falling from the conical feed port 3 from accumulating at the center of the gap between the two crushing rollers 42, thus ensuring the uniformity of the feeding, thereby improving the crushing effect and achieving uniform crushing.

[0024] Reference Figures 2 to 3The follow-up fabric feeding mechanism includes an inclined fabric plate 51, a transmission rod 52, bearing seats 53, a follower wheel 54, and a support guide rod 57. The transmission rod 52 is rotatably mounted on the inner side of the machine compartment 2 via two bearing seats 53. The top of the bearing seats 53 is fixed to the upper inner wall of the machine compartment 2 to provide stable support for the transmission rod 52 and ensure that the transmission rod 52 can rotate. The left end of the transmission rod 52 extends through to the left side of the machine compartment 2 and is fixedly connected to the follower wheel 54 located on the left side of the machine compartment 2, so that the transmission rod 52 and the follower wheel 54 can rotate synchronously. A pulley corresponding to the follower wheel 54 is fixed on the surface of one of the main shafts 43, and a transmission belt 55 is connected between the pulley and the follower wheel 54. When the main shaft 43 is running, it drives the follower wheel 54 and the transmission rod 52 to rotate synchronously through the transmission belt 55, thereby realizing the power transmission between the main shaft 43 and the transmission rod 52.

[0025] Reference Figures 2 to 3 In this embodiment, there are two inclined feeding plates 51, which are symmetrically arranged on the inside of the machine compartment 2 and directly below the conical discharge port 3. Both inclined feeding plates 51 are inclined and arranged in a figure-eight shape. This can guide the material to be crushed falling from the conical discharge port 3 to both sides of the gap between the two crushing rollers 42, avoiding excessive accumulation of a large amount of material at the center of the gap between the two crushing rollers 42.

[0026] Reference Figures 2 to 3 Each inclined fabric plate 51 has a follower plate 56 fixed on its front side. In this embodiment, there are two support guide rods 57, which are fixed laterally on the inner side of the cabin 2 and located between the inclined fabric plate 51 and the transmission rod 52. The two support guide rods 57 pass through the follower plate 56 laterally, which can support and guide the follower plate 56, restricting the follower plate 56 to only move laterally in the horizontal direction and preventing it from rotating or undergoing other displacements.

[0027] Reference Figure 3 The transmission rod 52 consists of five parts from left to right: a front rod 521, a left reciprocating lead screw 524, a middle rod 523, a right reciprocating lead screw 525, and a rear rod 522. These five parts are welded and fixed to form a rotatable integral rod structure. The middle rod 523 is located at the center of the transmission rod 52, while the left reciprocating lead screw 524 and the right reciprocating lead screw 525 are located on the left and right sides of the middle rod 523, respectively, and are respectively engaged with one of the follower plates 56. When the transmission rod 52 is running, it can drive the two follower plates 56 to move horizontally back and forth through the left reciprocating lead screw 524 and the right reciprocating lead screw 525. The two bearing seats 53 are used for the rotational support of the front rod 521 and the rear rod 522, respectively.

[0028] In the above structure, refer to Figure 3 and Figure 4Both the left reciprocating screw 524 and the right reciprocating screw 525 have reciprocating thread grooves on their surfaces, but the reciprocating thread grooves on the surfaces of the left reciprocating screw 524 and the right reciprocating screw 525 are in opposite directions. The reciprocating thread groove is composed of a left thread and a right thread, and the ends of the grooves of the left thread and the right thread merge and smoothly transition to form a reversing groove for the left and right threads. When the left reciprocating screw 524 and the right reciprocating screw 525 rotate, the follower plate 56 can be driven to move horizontally and reciprocally along the axial direction of the left reciprocating screw 524 and the right reciprocating screw 525 through the reciprocating thread groove. Since the ends of the left thread groove and the right thread groove are connected and merged, the follower plate 56 can automatically change direction after moving to the extreme position to the left or right through the connection and merger of the ends of the groove.

[0029] Specifically, refer to Figure 4 and Figure 5 Each follower plate 56 has a movable slide 561 rotatably mounted on its front side via a rotating shaft. Several sliding protrusions 562 are rotatably mounted on the inner side of the movable slide 561, which slide in conjunction with the reciprocating thread groove. When the left reciprocating screw 524 and the right reciprocating screw 525 rotate, the sliding protrusions 562 on the inner side of the movable slide 561 will slide in conjunction with the reciprocating thread groove, driving the movable slide 561 and the follower plate 56 to perform reciprocating horizontal displacement. This achieves the horizontal reciprocating movement of the two inclined fabric plates 51. When the sliding protrusions 562 slide at the left and right threads of the reciprocating thread groove, they will smoothly transition through the reversing groove when they slide to the end of the groove, achieving a smooth change in the direction of movement. This enables the follower plate 56 to perform horizontal reciprocating motion when the transmission rod 52 rotates.

[0030] Reference Figures 2 to 3 It is worth noting that when the two inclined feeding plates 51 move horizontally to the center closest to the conical discharge port 3, a gap remains between them to allow some material to fall normally. This prevents them from colliding or interfering with each other, and also prevents all material falling from the conical discharge port 3 from being guided to the edge of the crushing roller 42. Only a portion of the material falling from the conical discharge port 3 is guided to the edge of the crushing roller 42, thus appropriately distributing the material load at the center of the gap between the two crushing rollers 42. More importantly, the two inclined feeding plates 51 move horizontally back and forth below the conical discharge port 3, thus distributing the material as evenly as possible to the edge of the gap between the two crushing rollers 42, rather than continuously distributing it to one spot. This makes the entire feeding process more uniform and flexible, further improving the uniformity of material feeding and ensuring uniform crushing of the material between the two crushing rollers 42.

[0031] In summary, through the cooperation of the inclined feeding plate 51, transmission rod 52, follower wheel 54, and transmission belt 55, power can be obtained directly from the original transmission system of the roller mill without adding an additional power source. This enables the two inclined feeding plates 51 to reciprocate horizontally below the conical discharge port 3. The advantage of this is that the material falling vertically from the conical discharge port 3 can be intermittently guided to both sides of the gap between the two crushing rollers 42, preventing the material falling vertically from the conical discharge port 3 from accumulating at the center of the gap between the two crushing rollers 42. This reduces the burden on the center of the two crushing rollers 42 and makes the material drop more uniform, thereby improving the crushing uniformity and crushing effect of the two crushing rollers 42 on the material. Furthermore, all of the above structures are designed above the two crushing rollers 42 with sufficient gaps, so they will not affect the crushing function of the two crushing rollers 42 themselves. It can be said that the performance of the roller mill is significantly improved, making the crushing effect of the roller mill on the material more uniform and excellent. Moreover, the overall cost is low, it is easy to assemble and maintain, and the overall practicality is high.

[0032] Example 2: Please see Figures 1 to 8 Based on Example 1, considering that when material falls from the conical discharge port 3, it will come into contact with the inner wall of the conical discharge port 3, resulting in some material adhering and remaining on the inner wall. Over time, the cleanliness of the inner wall of the conical discharge port 3 cannot be guaranteed, which will reduce the quality and cleanliness of the product after subsequent material crushing, and also reduce the material processing utilization rate. Therefore, this embodiment designs a cleaning mechanism 6 in the machine chamber 2 that is further linked with the follow-up feeding mechanism, so that while the follow-up feeding mechanism is operating, it continuously cleans the inner wall of the conical discharge port 3, thereby ensuring the cleanliness of the inner wall of the conical discharge port 3 as much as possible, and ensuring the overall quality and cleanliness of the material after subsequent crushing.

[0033] Specifically, such as Figures 6 to 8 As shown, the cleaning mechanism 6 includes a spiral bevel gear ring 61 rotatably mounted on the inner wall of the engine compartment 2 via a bearing ring, a side block 62 welded and fixed to the inner wall of the spiral bevel gear ring 61, an L-shaped cleaning strip 63 welded and fixed to the top of the side block 62 and extending to the inner side of the conical discharge port 3, and a linkage structure that is connected to the rear rod 522 and drives the spiral bevel gear ring 61 to rotate. The spiral bevel gear ring 61, as a rotatable base, can support the side block 62 and the L-shaped cleaning strip 63, and realize the subsequent rotation of the side block 62 and the side block 63 through the linkage structure. The inner side of the L-shaped cleaning strip 63 has multiple bristles that are evenly distributed and contact the inner wall of the conical discharge port 3. During the subsequent rotation of the L-shaped cleaning strip 63, the inner wall of the conical discharge port 3 can be continuously cleaned, thereby ensuring the cleanliness of the inner wall of the conical discharge port 3. The linkage structure links the rear rod 522 and the spiral bevel gear ring 61 to realize the power transmission between the two.

[0034] In the above structure, the L-shaped cleaning strip 63 can reduce the material residue adhering to the conical discharge port 3 during cleaning, reducing the cleaning burden on subsequent workers, and also ensure that all materials fall down for thorough crushing, ensuring the processing utilization rate of materials. It has the functions of improving material utilization and reducing the material residue adhering to the inner wall of the conical discharge port 3. Without the continuous cleaning of the L-shaped cleaning strip 63, a large amount of material may accumulate on the inner wall of the conical discharge port 3 over time, which will reduce the feeding efficiency and the crushing efficiency of the material accordingly. In this embodiment, the L-shaped cleaning strip 63 can rotate synchronously with the transmission rod 52 to achieve continuous cleaning of the inner wall of the conical discharge port 3.

[0035] Furthermore, such as Figure 7 and Figure 8 As shown, the linkage structure includes a bearing housing 64 fixed to the inner wall of the cabin 2 and located to the right of the spiral bevel gear ring 61, and a linkage shaft 68 mounted on the bearing housing 64 via a bearing that rotates laterally. The bearing housing 64 acts as a support to stably support the linkage shaft 68, thereby ensuring the stability of the linkage shaft 68 during subsequent operation. A bevel gear 65 that meshes with the spiral bevel gear ring 61 is fixedly installed at the left end of the linkage shaft 68. A [missing information - likely a gear name] is fixed at the right end of the linkage shaft 68 and the right end of the rear rod 522. The pulley 66 and the linkage belt 67 connecting the two pulleys 66 will cause the linkage shaft 68 to rotate synchronously when the rear rod 522 rotates. When the linkage shaft 68 rotates, it will directly drive the spiral bevel gear 61 to rotate through the meshing of the bevel gear 65 and the spiral bevel gear ring 61, thereby smoothly realizing the rotational displacement of the side block 62 and the L-shaped cleaning strip 63. The L-shaped cleaning strip 63 can then move and clean the inner wall of the conical discharge port 3 along the circumferential direction of the conical discharge port 3.

[0036] In this embodiment, the cleaning mechanism 6 is connected to the rear rod 522 in a transmission connection. In actual applications, the cleaning mechanism 6 can also be connected to the front rod 521 in a transmission connection. As long as the transmission rod 52 can transmit power to the cleaning mechanism 6 when it rotates, the material remaining on the inner wall of the conical discharge port 3 can be continuously cleaned.

[0037] Compared to Embodiment 1, this embodiment adds a cleaning mechanism 6 linked to the follow-up feeding mechanism. This cleaning mechanism can simultaneously clean the residual material on the inner wall of the conical discharge port 3 while the follow-up feeding mechanism in Embodiment 1 achieves uniform feeding. This improves the cleanliness of the inner wall of the conical discharge port 3, ensuring the quality and cleanliness of the subsequently crushed material. It also does not affect the normal operation of the roller mill itself or the follow-up feeding mechanism, minimizing the maintenance cycle of the roller mill. Furthermore, the cleaning mechanism 6 has a simple structure, requires no additional drive source, and is directly linked to the follow-up feeding mechanism, drawing power directly from the transmission system of the roller mill itself. This makes it low-cost and easy to promote and use.

Claims

1. A double-roll mill capable of uniform crushing, comprising a main body (1) fixed above a frame, a chamber (2) fixed to the top of the main body (1), and a conical feed inlet (3) fixed to the top surface of the chamber (2) for the material to be crushed to enter, characterized in that, The machine body (1) is provided with a crushing mechanism for crushing materials. The machine compartment (2) is provided with a follow-up feeding mechanism that is connected to the crushing mechanism. The follow-up feeding mechanism is located directly below the conical feeding port (3). When the crushing mechanism is started, the material can be intermittently fed to both sides of the crushing mechanism through the follow-up feeding mechanism.

2. The double-roll mill capable of achieving uniform crushing according to claim 1, characterized in that, The crushing mechanism includes two crushing rollers (42) rotatably mounted inside the main body (1) and a servo motor (41) fixedly mounted on the main body (1). The ends of the two crushing rollers (42) are fixedly mounted with main shafts (43), and one of the crushing rollers (42) is fixedly connected to the output shaft of the servo motor (41). The outer surfaces of the two main shafts (43) are fixedly fitted with mutually meshing gears.

3. A double-roll mill capable of achieving uniform crushing according to claim 2, characterized in that, The following fabric feeding mechanism includes an inclined fabric feeding plate (51), a transmission rod (52), a bearing seat (53), a follower wheel (54), and a support guide rod (57). Two inclined fabric feeding plates (51) are symmetrically arranged inside the machine compartment (2) and at the bottom of the conical feed port (3). The transmission rod (52) is rotatably installed inside the machine compartment (2) through two bearing seats (53). The end of the transmission rod (52) passes through the machine compartment (2) and is fixedly installed with a follower wheel (54). The follower wheel (54) and one of the main shafts (43) are connected by a transmission belt (55). The surface of the inclined fabric feeding plate (51) is fixed with a follower plate (56) limited by the support guide rod (57). After the transmission rod (52) rotates, it can drive the two follower plates (56) to move horizontally back and forth through the support guide rod (57).

4. A double-roll mill capable of achieving uniform crushing according to claim 3, characterized in that, The two support guide rods (57) are fixed laterally to the inside of the cabin (2) and pass laterally through the two follower plates (56) to provide guidance and support for the two follower plates (56).

5. A double-roll mill capable of achieving uniform crushing according to claim 3, characterized in that, The transmission rod (52) consists of five parts from left to right: a front rod (521), a left reciprocating screw (524), a middle rod (523), a right reciprocating screw (525), and a rear rod (522), and the five parts are welded and fixed into a rotatable whole; the middle rod (523) is located at the center of the transmission rod (52), and the left reciprocating screw (524) and the right reciprocating screw (525) are located on the left and right sides of the middle rod (523), respectively, and are used to drive a follower plate (56) to move laterally.

6. A double-roll mill capable of achieving uniform crushing according to claim 5, characterized in that, The surfaces of the left reciprocating screw (524) and the right reciprocating screw (525) are both provided with reciprocating thread grooves. The front side of the follower plate (56) is rotatably mounted with a movable slide (561), and the inner side of the movable slide (561) is rotatably mounted with a sliding protrusion (562) that slides in cooperation with the reciprocating thread groove. When the left reciprocating screw (524) and the right reciprocating screw (525) rotate, the sliding protrusion (562) will move back and forth in the reciprocating thread groove.

7. A double-roll mill capable of achieving uniform crushing according to claim 6, characterized in that, The reciprocating thread groove includes a left thread and a right thread, and the ends of the groove of the left thread and the groove of the right thread merge and smoothly transition to form a reversing groove for the left and right threads. When the left reciprocating screw (524) and the right reciprocating screw (525) rotate, the follower plate (56) can be driven to move horizontally and reciprocally along the axial direction of the left reciprocating screw (524) and the right reciprocating screw (525) through the reciprocating thread groove.

8. A double-roll mill capable of achieving uniform crushing according to claim 5, characterized in that, The inner side of the engine compartment (2) is also provided with a cleaning mechanism (6) that is connected to the rear rod (522) or the front rod (521). The cleaning mechanism (6) is in contact with the inner wall of the conical discharge port (3). When the rear rod (522) or the front rod (521) rotates through the cleaning mechanism (6), the inner wall of the conical discharge port (3) can be cleaned.

9. A double-roll mill capable of achieving uniform crushing according to claim 8, characterized in that, The cleaning mechanism (6) includes a spiral bevel gear ring (61) rotatably mounted on the engine compartment (2), a side block (62) fixed to the inner wall of the spiral bevel gear ring (61), and an L-shaped cleaning strip (63) fixed to the top of the side block (62) and extending to the inner side of the conical discharge port (3). The spiral bevel gear ring (61) and the rear rod (522) or the front rod (521) are provided with a linkage structure.

10. A double-roll mill capable of achieving uniform crushing according to claim 9, characterized in that, The linkage structure includes a bearing seat 2 (64) fixed on the engine compartment (2) and a linkage shaft (68) rotatably mounted on the bearing seat 2 (64). The ends of the linkage shaft (68) and the rear rod (522) are both fixed with pulleys (66), and the two pulleys (66) are connected by a linkage belt (67). The end of the linkage shaft (68) away from the pulleys (66) is fixedly mounted with a bevel gear (65) meshing with a spiral bevel gear ring (61).

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