Double-roller crusher and method

Abstract

The invention discloses a double-roller crusher and a method, and relates to the technical field of crusher machining, the double-roller crusher comprises a first supporting frame, a crushing mechanism comprises a crushing box arranged at the top of the first supporting frame, the crushing mechanism is used for crushing materials with various hardness, and a screening mechanism is independently arranged on the side of the crushing mechanism and is used for screening materials with various hardness. And the screening mechanism is arranged in the next working procedure of the screening mechanism and is used for screening the granularity of the crushed materials, the circulating mechanism is arranged in the next working procedure of the screening mechanism and is used for conveying unqualified materials to the crushing mechanism again for secondary crushing, and a conveying mechanism matched with the circulating mechanism in a work division mode is arranged below the screening mechanism. Through the arrangement of the crushing assembly and the four-connecting-rod mechanism driven by the air cylinder, accurate adjustment of the distance between the crushing rollers is achieved, the gap requirements of different materials and crushing requirements are met, uniform crushing of the materials is guaranteed through synchronous rotation of the crushing rollers, the crushing efficiency and the crushing quality are improved, and the practicability is high. And vibration and noise caused by different rotating speeds of the two rollers are also avoided.

Description

Technical Field

[0001] The invention relates to the technical field of crusher processing, and in particular to a double-roll crusher and a method. Background Art

[0002] The double-roll crusher, also known as the double-roll crusher, is a type of roller crusher. It is suitable for crushing materials with medium and high hardness in industrial sectors such as metallurgy, building materials, and refractory materials. It is especially suitable for medium and fine crushing of materials such as limestone, slag, coke, and coal. Compared with other types of crushers, the double-roll crusher has the advantages of a large crushing ratio, no requirements on the dryness of the crushed materials, no stickiness or blockage, less over-crushing, low noise, low vibration, and less dust.

[0003] The existing double-roll crusher cannot adjust the crushing particle size in real time to match different needs due to the fixed setting of the crushing roller group and the insufficient crushing degree, which limits the application scope of the crusher and increases the difficulty and cost of subsequent processing. Therefore, the present invention proposes a double-roll crusher and method. Summary of the invention

[0004] The object of the present invention is to provide a double-roll crusher and method to solve the problem that the existing double-roll crusher mentioned in the above background technology is often unable to adjust the size of the crushed particle size in real time to match different needs due to the fixed setting of the crushing roller group and the insufficient crushing degree, which limits the application scope of the crusher and increases the difficulty and cost of subsequent processing.

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

[0006] A double-roll crusher, comprising:

[0007] A first support frame, wherein the first support frame is arranged horizontally;

[0008] A crushing mechanism, the crushing mechanism comprising a crushing box arranged on the top of the first support frame, the crushing mechanism is used to crush materials of various hardnesses;

[0009] A screening mechanism, which is independently arranged beside the crushing mechanism and is used to screen the particle size of the crushed material;

[0010] The circulation mechanism is arranged in the next process of the screening mechanism, and is used to transport unqualified materials back to the crushing mechanism for secondary crushing. A conveying mechanism cooperating with the circulation mechanism is arranged below the screening mechanism.

[0011] Optionally, the crushing mechanism further comprises a feed port, a crushing assembly and a discharge plate arranged at the top of the crushing box, a crushing assembly is arranged inside the crushing box, and a discharge plate is arranged at the bottom of the crushing box.

[0012] Optionally, the crushing assembly includes a first crushing roller, a second crushing roller, a driving shaft, a mounting block, a main gear, a connecting rod 1, a slave gear 1, a slave gear 2, a connecting rod 2, a connecting rod 3, a slave gear 3, a cylinder, and a fixed block. The first crushing roller and the second crushing roller are correspondingly arranged inside the crushing box, and a rotatable driving shaft and a fixed shaft are respectively provided below the first crushing roller and the second crushing roller. The driving shaft and the fixed shaft on both sides are installed inside the crushing box through mounting blocks provided at the front and rear ends. The main gear is fixedly sleeved on the outside of the driving shaft, and the outsides of the driving shaft and the fixed shaft are movable A connecting rod 1 is connected, and the other end of the connecting rod 1 is fixedly connected to the output end of the cylinder. The cylinder is arranged inside the crushing box through a fixed block. The end face axes of the first crushing roller and the second crushing roller are fixedly connected with a slave gear 1. The joint points of the connecting rod 1 on both sides are coaxially arranged on the outside of the slave gear 1. The main gear is transmitted to the slave gear 1 through the slave gear 2 arranged on the connecting rod 1. The connecting rods 1 on both sides are movably connected through the connecting rod 2 and the connecting rod 3. The slave gear 1 on the front end face of the first crushing roller is transmitted to the other slave gear 1 through the slave gear 3 set at the joint points of the connecting rod 2 and the connecting rod 3.

[0013] Optionally, a connecting rod 4 is provided on the corresponding outer sleeves of the driving shaft and the fixed shaft away from the connecting rod 1.

[0014] Optionally, the screening mechanism includes a second support frame, the top four corners of the second support frame are each provided with a first spring, the tops of the first springs are commonly connected to a connecting frame, a screening plate is installed in the connecting frame, and a first baffle is provided at the top end of the front and rear sides of the connecting frame, the bottom of the connecting frame is connected to a guide groove, and a vibration motor is fixedly installed on the outside of the guide groove.

[0015] Optionally, the front and rear side plates of the second supporting frame are fixedly connected to a cross plate by a connecting rod, a fixing plate is provided between the upper end surfaces of the cross plates on both sides, a plurality of second springs are linearly distributed along the board body direction on the left side of the connecting frame, the other ends of the plurality of second springs are fixedly connected to the side of the fixing plate, a first installation box for installing a power supply machine is provided on the upper surface of the cross plates on both sides close to the fixing plate, a second installation box is provided on the upper surface of the cross plate and located next to the first installation box, a rotating body is horizontally provided in the second installation box, the output end of the motor is fixedly connected to the end of the rotating body, a spiral groove is provided on the outer surface of the rotating body, and slides are symmetrically installed in the spiral groove about the axis of the rotating body, the slides on both sides are fixedly connected to a U-shaped frame on the opposite side, and a movable rod is fixedly connected to the top of the U-shaped frame.

[0016] Optionally, the screening mechanism also includes a slide groove, which is correspondingly opened on the upper surface of the horizontal plate, and the front and rear side plates of the connecting frame away from the first spring are provided with extension blocks, and the bottom of the extension block is provided with a sliding block that cooperates with the slide groove, and the other end of the movable rod is fixedly connected to the end face of the sliding block.

[0017] Optionally, the circulation mechanism includes a circulating conveyor belt arranged in the next process of the connecting frame, the other end of the circulating conveyor belt extends to the feed port on the crushing box, and a material baffle is provided on the side of one end of the circulating conveyor belt close to the connecting frame.

[0018] Optionally, the conveying mechanism includes a conveying slide arranged below the guide trough.

[0019] A method for using a double-roll crusher, comprising:

[0020] S1: The material to be crushed is evenly put into the crushing box through the feed port of the crushing mechanism, and the crushing assembly is started. The cylinder is used as an adjustment mechanism, and its output end is fixedly connected to one end of the connecting rod 1. When the cylinder is extended and retracted, it drives the external movement of the connecting rod 1 around the fixed axis. The movement of the connecting rod 1 is connected through the joints of the connecting rods 2 and 3 to form a four-bar mechanism. The movement causes the distance between the two crushing rollers to change, and the adjustment of the cylinder forms an appropriate gap between the two rollers, so as to achieve fine-tuning of the crushing roller spacing to meet the gap requirements of different materials and crushing needs.

[0021] S2: Then the external power source drives the driving shaft to rotate, and the main gear sleeved on the outside of the driving shaft rotates accordingly. The main gear meshes with the slave gear 1 on the end face of the first crushing roller through the slave gear 2 set at the joint of the connecting rod 1, thereby driving the first crushing roller to rotate. The rotation of the first crushing roller is transmitted to the slave gear 1 of the second crushing roller through the slave gear 3 set at the joint points of the connecting rod 2 and the connecting rod 3, realizing the synchronous rotation between the two rollers, ensuring that the first crushing roller and the second crushing roller can rotate at the same speed and direction, thereby realizing uniform crushing of the material.

[0022] S3: The crushed material falls into the screening plate on the second support frame of the screening mechanism, and the vibration motor is started to make the screening plate vibrate to screen the material. In order to ensure the quality and efficiency of material screening, the motor is started, and the motor drives the rotating body to rotate. The rotation of the rotating body drives the spiral groove and the slide thereon to move relative to each other, thereby driving the U-shaped frame to make linear reciprocating motion. The movable rod fixedly connected to the U-shaped frame drives the slider to slide in the slide groove, thereby driving the connecting frame to reciprocate through the extension block, squeezing the second spring to enhance the screening effect and avoid clogging of the screening plate during long-term screening. The qualified materials after screening fall into the guide groove through the screening plate, and are finally transported to the next process through the conveying slide, among which the unqualified materials fall onto the circulating conveyor belt through the inclined screening plate, and the unqualified materials are re-conveyed to the crushing mechanism through the circulating conveyor belt for re-crushing.

[0023] The beneficial effects of the present invention are:

[0024] 1. The crushing assembly and the cylinder-driven four-bar mechanism in the present invention realize the precise adjustment of the crushing roller spacing, adapt to the gap requirements of different materials and crushing needs, and then ensure the uniform crushing of materials through the synchronous rotation of the crushing rollers, improve the crushing efficiency and crushing quality, and avoid the vibration and noise caused by the different rotation speeds of the two rollers.

[0025] 2. In the present invention, the screening efficiency and screening quality are significantly improved by setting the screening mechanism, combining the vibration motor and reciprocating screening. The screening mechanism avoids the inefficient screening of only relying on the vibration motor to vibrate the screening plate through reciprocating motion, thereby enhancing the screening effect, avoiding the clogging of the screening plate under long-term operation, and extending the service life of the equipment. The screened materials can be automatically diverted, and qualified materials and unqualified materials enter different conveying paths respectively, realizing automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a double-roll crusher of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a double-roll crusher of the present invention from another perspective;

[0028] Figure 3 It is a schematic diagram of the structure of the crushing assembly in the present invention;

[0029] Figure 4 A schematic structural diagram of the crushing assembly of the present invention from another perspective;

[0030] Figure 5 It is a structural schematic diagram of the screening mechanism in the present invention;

[0031] Figure 6It is a side view of the screening mechanism in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the screening mechanism in the present invention from another perspective;

[0033] Figure 8 Based Figure 7 The enlarged view of point A in the middle;

[0034] Fig. 9 Based Figure 7 The enlarged view of point B in the middle;

[0035] Fig.10 It is a top view of the screening mechanism in the present invention.

[0036] The numbers in the figure are:

[0037] 1. The first support frame;

[0038] 2. Crushing mechanism; 201. Crushing box; 202. Feeding port; 203. Crushing assembly; 2031. First crushing roller; 2032. Second crushing roller; 2033. Driving shaft; 2034. Mounting block; 2035. Main gear; 2036. Connecting rod 1; 2037. Slave gear 1; 2038. Slave gear 2; 2039. Connecting rod 2; 20310. Connecting rod 3; 20311. Slave gear 3; 20312. Cylinder; 20313. Fixed block; 20314. Connecting rod 4; 20315. Fixed shaft; 204. Discharging plate;

[0039] 3. Screening mechanism; 301. Second support frame; 302. First spring; 303. Connecting frame; 304. Screening plate; 305. Guide groove; 306. Vibrating motor; 307. First baffle; 308. Second spring; 309. Fixed plate; 310. Connecting rod; 311. Horizontal plate; 312. First mounting box; 313. Motor; 314. Rotating body; 315. Spiral groove; 316. Slide; 317. U-shaped frame; 318. Movable rod; 319. Slide; 320. Extension block; 321. Sliding block; 322. Second mounting box;

[0040] 4. Circulation mechanism; 401. Circulation conveyor belt; 402. Material baffle;

[0041] 5. Conveying mechanism; 501. Conveying slide. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] The device of the present invention will be described below in conjunction with preferred embodiments thereof.

[0044] See also Figure 1-10 As shown, the double-roll crusher comprises:

[0045] A first support frame 1, which is horizontally arranged; a crushing mechanism 2, which includes a crushing box 201 arranged on the top of the first support frame 1, and is used for crushing materials of various hardnesses; a screening mechanism 3 is independently arranged beside the crushing mechanism 2, and is used for screening the particle size of the crushed materials; a circulation mechanism 4 is arranged in the next process of the screening mechanism 3, and is used for re-transporting unqualified materials to the crushing mechanism 2 for secondary crushing, and a conveying mechanism 5 cooperating with the circulation mechanism 4 is provided below the screening mechanism 3.

[0046] In another embodiment provided by the present invention, Figure 1 , 3 As shown in FIG. 4 , the crushing mechanism 2 further includes a feed port 202 , a crushing assembly 203 and a discharge plate 204 arranged at the top of the crushing box 201 . The crushing assembly 203 is arranged inside the crushing box 201 , and the discharge plate 204 is arranged at the bottom of the crushing box 201 .

[0047] The crushing assembly 203 includes a first crushing roller 2031, a second crushing roller 2032, a driving shaft 2033, a mounting block 2034, a main gear 2035, a connecting rod 1 2036, a slave gear 1 2037, a slave gear 2038, a connecting rod 2039, a connecting rod 3 20310, a slave gear 3 20311, a cylinder 20312, and a fixed block 20313. The first crushing roller 2031 and the second crushing roller 2032 are correspondingly arranged inside the crushing box 201. A rotatable driving shaft 2033 and a fixed shaft 20315 are respectively arranged below the first crushing roller 2031 and the second crushing roller 2032. The driving shafts 2033 and the fixed shaft 20315 on both sides are installed inside the crushing box 201 through the mounting blocks 2034 arranged at the front and rear ends. The main gear 2035 is fixedly sleeved on the outside of the driving shaft 2033. The driving shaft 2033 and the fixed shaft 203 The outside of the first crushing roller 2031 and the second crushing roller 2032 are movably connected to the connecting rod 1 2036, and the other end of the connecting rod 1 2036 is fixedly connected to the output end of the cylinder 20312. The cylinder 20312 is arranged inside the crushing box 201 through the fixed block 20313. The end faces of the first crushing roller 2031 and the second crushing roller 2032 are fixedly connected to the secondary gear 1 2037 at the axis center. The joint points of the connecting rods 1 2036 on both sides are coaxially arranged on the secondary gear 1 203 On the outer side of 7, the main gear 2035 is transmitted to the slave gear one 2037 through the slave gear two 2038 provided on the connecting rod one 2036, and the connecting rods 1 2036 on both sides are movably connected through the connecting rod two 2039 and the connecting rod three 20310. The slave gear one 2037 on the front end surface of the first crushing roller 2031 is transmitted to the other slave gear one 2037 through the slave gear three 20311 provided at the joint point of the connecting rod two 2039 and the connecting rod three 20310.

[0048] Connecting rod 4 20314 is correspondingly sleeved on the outside of the driving shaft 2033 and the fixed shaft 20315 away from connecting rod 1 2036.

[0049] Specifically, when it is necessary to adjust the spacing between the first crushing roller 2031 and the second crushing roller 2032, the cylinder 20312 starts to work, which drives the connecting rod 1 2036 to move around the fixed shaft 20315. The movement of the connecting rod 1 2036 is connected through the joints of the connecting rod 2039 and the connecting rod 33 20310 to form a four-bar linkage. The movement causes the spacing between the two crushing rollers to change, and the adjustment of the cylinder 20312 forms an appropriate gap between the two rollers, so as to achieve fine adjustment of the spacing between the crushing rollers to meet the gap requirements of different materials and crushing needs. After the gap is adjusted, the driving shaft 2033 starts to rotate under the drive of the external power source of the crushing box 201, and the rotation of the driving shaft 2033 brings The main gear 2035 fixed thereon rotates synchronously, and the main gear 2035 meshes with the slave gear 1 2037 on the end face of the first crushing roller 2031 through the slave gear 2038 provided on the connecting rod 1 2066, thereby driving the first crushing roller 2031 to rotate. At the same time, due to the joint connection between the connecting rod 2039 and the connecting rod 3 20310 and the transmission effect of the slave gear 3 20311, the rotation of the first crushing roller 2031 will be transmitted to the slave gear 1 2037 of the second crushing roller 2032, thereby driving the second crushing roller 2032 to rotate synchronously, and the two rollers rotate at the same speed and direction, so as to evenly crush the materials, improve the crushing efficiency and crushing quality, and avoid the vibration and noise caused by the different rotation speeds of the two rollers.

[0050] In another embodiment provided by the present invention, Figure 5-10 As shown, the screening mechanism 3 includes a second support frame 301, and the first springs 302 are provided at the four corners of the top of the second support frame 301. The tops of the first springs 302 are commonly connected to a connecting frame 303. A screening plate 304 is installed in the connecting frame 303, and a first baffle 307 is provided at the top ends of the front and rear sides of the connecting frame 303. The bottom of the connecting frame 303 is connected to a guide groove 305, and a vibration motor 306 is fixedly installed on the outer side of the guide groove 305.

[0051] The front and rear side plates of the second support frame 301 are fixedly connected to the cross plate 311 through the connecting rod 310, and a fixing plate 309 is arranged between the upper end surfaces of the two side cross plates 311, and a plurality of second springs 308 are linearly distributed along the board body direction on the left side of the connection frame 303, and the other ends of the plurality of second springs 308 are fixedly connected to the side of the fixing plate 309, and the upper surfaces of the two side cross plates 311 near the fixing plate 309 are provided with a first installation box 312 for installing the power supply machine 313, and the upper surface of the cross plate 311 and the first installation box 312 are located at the bottom of the cross plate 311. A second installation box 322 is provided on the side of the first installation box 312, and a rotating body 314 is rotatably and horizontally provided in the second installation box 322. The output end of the motor 313 is fixedly connected to the end of the rotating body 314. A spiral groove 315 is provided on the outer surface of the rotating body 314. Slides 316 are symmetrically installed in the spiral groove 315 about the axis of the rotating body 314. A U-shaped frame 317 is fixedly connected to the opposite side of the slides 316 on both sides, and a movable rod 318 is fixedly connected to the top of the U-shaped frame 317.

[0052] The screening mechanism 3 also includes a slide groove 319, which is correspondingly opened on the upper surface of the horizontal plate 311. The front and rear side plates of the connecting frame 303 away from the first spring 302 are provided with extension blocks 320. The bottom of the extension block 320 is provided with a slider 321 that cooperates with the slide groove 319, and the other end of the movable rod 318 is fixedly connected to the end face of the slider 321.

[0053] Specifically, the crushed material falls into the screening plate 304 on the second support frame 301 of the screening mechanism 3, and the vibration motor 306 is started to make the screening plate 304 vibrate to screen the material. Under the action of vibration, the qualified material on the screening plate 304 falls into the guide groove 305 through the screen, and the unqualified material remains on the screening plate 304. In order to ensure the quality and efficiency of material screening under long-term work, the motor 313 is started to drive the rotating body 314 to rotate. The rotation of the rotating body 314 drives the spiral groove 315 and the slide 316 thereon to move relative to each other. The slide 316 drives the slider 321 to slide in the slide groove 319 through the U-shaped frame 317 and the movable rod 318. The slider 321 drives the connecting frame 303 to reciprocate through the extension block 320 to squeeze and release the second spring 308. The reciprocating motion further enhances the screening effect and avoids the blockage of the screening plate 304.

[0054] The circulation mechanism 4 includes a circulating conveyor belt 401 arranged in the next process of the connecting frame 303, the other end of the circulating conveyor belt 401 extends to the feed port 202 on the crushing box 201, and a material baffle 402 is provided on the side of one end of the circulating conveyor belt 401 close to the connecting frame 303. The unqualified materials are transported to the crushing component 203 again through the circulating conveyor belt 401 for crushing.

[0055] The conveying mechanism 5 includes a conveying slide 501 disposed below the guide groove 305 , and the qualified materials after screening are transported to the next process through the provided conveying slide 501 .

[0056] When the present invention is in use, the following steps are followed: S1: the material to be crushed is evenly fed into the crushing box 201 through the feed port 202 of the crushing mechanism 2, and the crushing assembly 203 is started. The cylinder 20312 is used as an adjusting mechanism, and its output end is fixedly connected to one end of the connecting rod 1 2036. When the cylinder 20312 is extended or retracted, it drives the connecting rod 1 2036 to move externally around the fixed axis 20315. The movement of the connecting rod 1 2036 is connected through the joints of the connecting rod 2 2039 and the connecting rod 3 20310 to form a four-bar linkage. The movement causes the spacing between the two crushing rollers to change, and the adjustment of the cylinder 20312 forms an appropriate gap between the two rollers, thereby achieving fine-tuning of the spacing between the crushing rollers to meet the gap requirements of different materials and crushing needs.

[0057] S2: Then the external power source drives the driving shaft 2033 to rotate, and the main gear 2035 sleeved on the outside of the driving shaft 2033 rotates accordingly. The main gear 2035 meshes with the slave gear 1 2037 on the end face of the first crushing roller 2031 through the slave gear 2 2038 set at the joint of the connecting rod 1 2036, thereby driving the first crushing roller 2031 to rotate. The rotation of the first crushing roller 2031 is transmitted to the slave gear 1 2037 of the second crushing roller 2032 through the slave gear 3 20311 set at the joint points of the connecting rod 2 2039 and the connecting rod 3 20310, thereby realizing the synchronous rotation between the two rollers, ensuring that the first crushing roller 2031 and the second crushing roller 2032 can rotate at the same speed and direction, thereby realizing uniform crushing of the material.

[0058] S3: The crushed material falls into the screening plate 304 on the second support frame 301 of the screening mechanism 3, and the vibration motor 306 is started to make the screening plate 304 vibrate to screen the material. In order to ensure the quality and efficiency of the material screening, the third motor 313 is started, and the third motor 313 drives the rotating body 314 to rotate. The rotation of the rotating body 314 drives the spiral groove 315 and the sliding plate 316 thereon to move relative to each other, thereby driving the U-shaped frame 317 to perform linear reciprocating motion, and the movable rod 318 fixedly connected to the U-shaped frame 317 drives the sliding block 321 It slides in the slide groove 319, thereby driving the connecting frame 303 to reciprocate through the extension block 320, squeezing the second spring 308, enhancing the screening effect, and avoiding the blockage of the screening plate 304 during a long screening process. The qualified materials after screening fall into the guide groove 305 through the screening plate 304, and are finally transported to the next process through the conveying slide 501, among which the unqualified materials fall onto the circulating conveyor belt 401 through the inclined screening plate 304, and are re-transported to the crushing mechanism 2 through the circulating conveyor belt 401 for re-crushing.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-roll crusher, characterized in that: include: A first support frame (1), the first support frame is arranged horizontally; A crushing mechanism (2), the crushing mechanism (2) comprising a crushing box (201) arranged on the top of the first support frame (1), the crushing mechanism (2) being used for crushing materials of various hardnesses; A screening mechanism (3), the screening mechanism (3) being independently arranged beside the crushing mechanism (2) and used for screening the particle size of the crushed material; A circulation mechanism (4) is provided in the next process of the screening mechanism (3) and is used to transport unqualified materials back to the crushing mechanism (2) for secondary crushing. A conveying mechanism (5) is provided below the screening mechanism (3) and cooperates with the circulation mechanism (4).

2. A double-roll crusher according to claim 1, characterized in that: The crushing mechanism (2) further comprises a feed port (202) arranged at the top of the crushing box (201), a crushing assembly (203) and a discharge plate (204); the crushing box (201) is provided with a crushing assembly (203) inside, and the crushing box (201) is provided with a discharge plate (204) at the bottom.

3. A double-roll crusher according to claim 2, characterized in that: The crushing assembly (203) comprises a first crushing roller (2031), a second crushing roller (2032), a driving shaft (2033), a mounting block (2034), a main gear (2035), a connecting rod 1 (2036), a slave gear 1 (2037), a slave gear 2 (2038), a connecting rod 2 (2039), a connecting rod 3 (20310), a slave gear 3 (20311), a cylinder (20312), and a fixing block (20313), wherein the first crushing roller (2031) and the second crushing roller (2032) correspond to The crushing box (201) is provided with a rotatable driving shaft (2033) and a fixed shaft (20315) respectively below the first crushing roller (2031) and the second crushing roller (2032). The driving shaft (2033) and the fixed shaft (20315) on both sides are installed in the crushing box (201) through mounting blocks (2034) provided at the front and rear ends. The main gear (2035) is fixedly sleeved on the outside of the driving shaft (2033). The driving shaft (2033) and the fixed shaft (20315) are fixedly sleeved on the outside of the driving shaft (2033). The outside of the first crushing roller (20315) is movably connected to a connecting rod 1 (2036), the other end of the connecting rod 1 (2036) is fixedly connected to the output end of the cylinder (20312), the cylinder (20312) is arranged inside the crushing box (201) through the fixed block (20313), the end face axis of the first crushing roller (2031) and the second crushing roller (2032) are fixedly connected to a slave gear 1 (2037), the joint points of the connecting rod 1 (2036) on both sides are coaxially arranged on the slave gear 1 (203 7), the main gear (2035) is transmitted to the slave gear one (2037) through the slave gear two (2038) provided on the connecting rod one (2036), the connecting rods one (2036) on both sides are movably connected through the connecting rod two (2039) and the connecting rod three (20310), and the slave gear one (2037) on the front end surface of the first crushing roller (2031) is transmitted to the other slave gear one (2037) through the slave gear three (20311) provided at the joint point of the connecting rod two (2039) and the connecting rod three (20310).

4. A double-roll crusher according to claim 3, characterized in that: The driving shaft (2033) and the fixed shaft (20315) are sleeved with a corresponding connecting rod 4 (20314) on the outside away from the connecting rod 1 (2036).

5. A double-roll crusher according to claim 1, characterized in that: The screening mechanism (3) comprises a second support frame (301), the top four corners of the second support frame (301) are each provided with a first spring (302), the top of the first spring (302) is commonly connected to a connecting frame (303), a screening plate (304) is installed in the connecting frame (303), and the top ends of the front and rear sides of the connecting frame (303) are provided with a first baffle (307), the bottom of the connecting frame (303) is connected to a guide groove (305), and a vibration motor (306) is fixedly installed on the outer side of the guide groove (305).

6. A double-roll crusher according to claim 5, characterized in that: The front and rear side plates of the second support frame (301) are fixedly connected to a transverse plate (311) through a connecting rod (310), a fixing plate (309) is provided between the upper end surfaces of the transverse plates (311) on both sides, a plurality of second springs (308) are linearly distributed along the board body direction on the left side of the connection frame (303), the other ends of the plurality of second springs (308) are fixedly connected to the side of the fixing plate (309), a first installation box (312) for installing a power supply machine (313) is provided on the upper surface of the transverse plates (311) on both sides close to the fixing plate (309), and the upper surface of the transverse plates (311) and the first installation box (312) located at the first installation box (312) are provided on the second installation box (312) for installing a power supply machine (313). A second installation box (322) is arranged beside an installation box (312), a rotating body (314) is rotatably arranged in the second installation box (322), an output end of the motor (313) is fixedly connected to the end of the rotating body (314), a spiral groove (315) is provided on the outer surface of the rotating body (314), sliding plates (316) are symmetrically arranged in the spiral groove (315) about the axis of the rotating body (314), and U-shaped frames (317) are fixedly connected to the opposite sides of the sliding plates (316), and a movable rod (318) is fixedly connected to the top of the U-shaped frame (317).

7. A double-roll crusher according to claim 6, characterized in that: The screening mechanism (3) further comprises a slide groove (319), wherein the slide groove (319) is correspondingly opened on the upper surface of the horizontal plate (311), and the front and rear side plates of the connecting frame (303) away from the first spring (302) are provided with extension blocks (320), and the bottom of the extension block (320) is provided with a sliding block (321) matching the slide groove (319), and the other end of the movable rod (318) is fixedly connected to the end surface of the sliding block (321).

8. A double-roll crusher according to claim 1, characterized in that: The circulation mechanism (4) comprises a circulating conveyor belt (401) arranged in the next process of the connecting frame (303), the other end of the circulating conveyor belt (401) extends to the feed port (202) on the crushing box (201), and a material baffle (402) is provided on the side of one end of the circulating conveyor belt (401) close to the connecting frame (303).

9. A double-roll crusher according to claim 1, characterized in that: The conveying mechanism (5) comprises a conveying slide (501) arranged below the guide groove (305).

10. A method for using a double-roll crusher, for realizing a double-roll crusher as claimed in any one of claims 1 to 9, characterized in that: include: S1: The material to be crushed is uniformly fed into the crushing box (201) through the feed port (202) of the crushing mechanism (2), and the crushing assembly (203) is started. The cylinder (20312) serves as an adjustment mechanism, and its output end is fixedly connected to one end of the connecting rod (2036). When the cylinder (20312) is extended or retracted, it drives the connecting rod (2036) to move externally around the fixed axis (20315). The movement of the connecting rod (2036) is connected through the joints of the connecting rod (2039) and the connecting rod (20310) to form a four-bar linkage. The movement causes the distance between the two crushing rollers to change, and the adjustment of the cylinder (20312) forms an appropriate gap between the two rollers, thereby achieving fine adjustment of the crushing roller distance to meet the gap requirements of different materials and crushing needs. S2: Then, the driving shaft (2033) is driven to rotate by an external power source, and the main gear (2035) sleeved on the outside of the driving shaft (2033) rotates accordingly. The main gear (2035) is meshed with the slave gear 1 (2037) on the end face of the first crushing roller (2031) through the slave gear 2 (2038) set at the joint of the connecting rod 1 (2036), thereby driving the first crushing roller (2031) to rotate. The rotation of the first crushing roller (2031) is transmitted to the slave gear 1 (2037) of the second crushing roller (2032) through the slave gear 3 (20311) set at the joint points of the connecting rod 2 (2039) and the connecting rod 3 (20310), thereby realizing synchronous rotation between the two rollers, ensuring that the first crushing roller (2031) and the second crushing roller (2032) can rotate at the same speed and direction, thereby realizing uniform crushing of the material. S3: The crushed material falls onto the screening plate (304) on the second support frame (301) of the screening mechanism (3), and the vibration motor (306) is started to make the screening plate (304) vibrate to screen the material. To ensure the quality and efficiency of the material screening, the motor (313) is started, and the motor (313) drives the rotating body (314) to rotate. The rotation of the rotating body (314) drives the spiral groove (315) and the sliding plate (316) thereon to perform relative motion, thereby driving the U-shaped frame (317) to perform linear reciprocating motion, and the movable rod (318) fixedly connected to the U-shaped frame (317) drives the sliding block (321) to rotate. ) slides in the slide groove (319), thereby driving the connecting frame (303) to reciprocate through the extension block (320), squeezing the second spring (308), enhancing the screening effect, and avoiding the clogging of the screening plate (304) during the long screening process. The qualified materials after screening fall into the guide groove (305) through the screening plate (304), and are finally transported to the next process through the conveying slide (501), among which the unqualified materials fall onto the circulating conveyor belt (401) through the inclined screening plate (304), and are re-transported to the crushing mechanism (2) through the circulating conveyor belt (401) for re-crushing.

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