Energy-saving type double-roller crusher

By designing a movable scraper and hydraulic drive system on the double roll crusher, combined with a liquid spraying assembly and dehumidifying cotton, the problem of wet material adhesion was solved, enabling online cleaning and improving production efficiency and the service life of the crushing rolls.

CN119425858BActive Publication Date: 2026-06-16WEIFANG INSPECTION & CERTIFICATION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WEIFANG INSPECTION & CERTIFICATION CO LTD
Filing Date
2024-12-23
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

When processing materials with high moisture content, existing double roll crushers are prone to the adhesion of substances to the surface of the crushing rolls, resulting in low crushing efficiency and high equipment maintenance costs. Furthermore, traditional cleaning methods affect production continuity or increase wear.

Method used

Design a cleaning mechanism for a double-roll crusher, including a movable scraper and a hydraulic drive system. The scraper cleans the crushing rolls when the deposits approach, and combined with a liquid spraying assembly and dehumidifying cotton, it achieves online cleaning and reduces wear on the crushing rolls.

🎯Benefits of technology

It enables automatic removal of deposits from the crushing rollers during the crushing process, ensuring continuous production, reducing equipment maintenance costs, and extending the service life of the crushing rollers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the general broken technical field, particularly to a kind of energy-saving type double-roller crusher, for solving the problem of low crushing efficiency caused by stop cleaning;The cleaning mechanism, including crushing assembly, crushing assembly includes rotatably arranged crushing roller;Crushing assembly is provided with scraping assembly;Scraping assembly includes scraper, scraper is movably arranged in crushing assembly, and scraper moves and can approach or away from crushing roller;When the moisture content of material is larger, if the crushed material adheres to the crushing roller, with the rotation of crushing roller, the adherend moves along with the rotation of crushing roller, when crushing roller rotates to make adherend close to scraper, scraper moves and approaches crushing roller, so that the adherend on crushing roller is scraped, scraper only moves to crushing roller when adherend on crushing roller is close, so that the degree of wear of crushing roller by scraper is reduced, while the service life of crushing roller is ensured.
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Description

Technical Field

[0001] This invention relates to the field of general crushing technology, and in particular to an energy-saving double roll crusher. Background Technology

[0002] In the field of material processing and crushing, the double roll crusher is a common piece of equipment, widely used in crushing various materials such as ores, coal, plastics, and kitchen waste. This type of crusher typically consists of two opposing rotating crushing rolls. The material is subjected to compression and shearing between these two rolls, thereby achieving the purpose of crushing.

[0003] However, in actual use, especially when processing materials with high moisture content, the surface of the crushing rollers often accumulates deposits such as wet mud and material residue. These deposits not only affect the crushing effect and reduce production efficiency, but also gradually harden and become difficult to remove under the continuous rotation of the crushing rollers. This not only increases the maintenance cost of the equipment, but may also lead to accelerated wear of the crushing rollers and shorten their service life.

[0004] To address this issue, the traditional approach is to periodically stop the machine and manually clean the deposits on the crushing rollers using tools. This method is not only inefficient and affects production continuity, but also poses safety hazards during the cleaning process. Alternatively, a scraper can be installed to adhere to the crushing rollers and scrape them off continuously. While this ensures that the deposits on the crushing rollers are removed, it increases the wear and tear on the crushing rollers and affects their service life. Summary of the Invention

[0005] This invention provides a cleaning mechanism for a double roll crusher to solve the problem of low crushing efficiency caused by downtime for cleaning.

[0006] To alleviate the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0007] A cleaning mechanism for a double roll crusher includes a crushing assembly, the crushing assembly including a rotatably disposed crushing roll;

[0008] The crushing component is equipped with a scraping component;

[0009] The scraping assembly includes a scraper, which is movably disposed on the crushing assembly, and the scraper can move closer to or further away from the crushing roller when it moves.

[0010] When an adhering substance is attached to the side wall of the crushing roller, the scraper moves close to the crushing roller to remove the adhering substance when the part of the crushing roller with the adhering substance is close to the scraper.

[0011] Furthermore, the scraping assembly also includes a first hydraulic rod connected to the crushing assembly, the output end of the first hydraulic rod being connected to the scraper;

[0012] The extension and retraction of the first hydraulic rod can drive the scraper to move closer to or away from the crushing roller.

[0013] Furthermore, it also includes a transmission assembly, which includes a rotating shaft that rotates on the crushing assembly, and a protrusion is provided on the side wall of the rotating shaft. The rotation angle of the protrusion is synchronized with the attachment on the side wall of the crushing roller.

[0014] The crushing assembly is also connected to a second hydraulic rod, and an oil pipe connects the second hydraulic rod to the first hydraulic rod.

[0015] The protrusion can be pressed against the output end of the second hydraulic rod to cause the first hydraulic rod to extend.

[0016] Furthermore, the crushing assembly also includes a swingable baffle, the movable end of which contacts the side wall of the crushing roller;

[0017] When the deposits on the sidewall of the crushing roller move to the movable end of the baffle, they can push the baffle to swing upward.

[0018] The crushing assembly is also connected to a driven wheel that rotates at the same speed as the crushing roller, and the driven wheel is coaxially arranged with the rotating shaft;

[0019] When the baffle is raised, the driven wheel drives the rotating shaft to rotate synchronously.

[0020] Furthermore, an inner conical ring is slidably connected to the side wall of the rotating shaft, and a synchronous cone is coaxially connected to the end of the driven wheel. The outer conical surface of the synchronous cone and the inner conical surface of the inner conical ring are both provided with anti-slip textures.

[0021] When the inner conical ring moves closer to the synchronous cone so that the inner conical surface of the inner conical ring fits against the outer conical surface of the synchronous cone, the driven wheel can drive the rotating shaft to rotate synchronously.

[0022] Furthermore, the transmission assembly also includes an electric slider that slides along the axis of the rotating shaft, and a connecting seat is connected to the electric slider, with the inner conical ring rotating around the connecting seat;

[0023] The end of the swing shaft of the baffle is connected to a pressure plate, and a transmission rod is vertically slidably arranged at the lower part of the pressure plate. A pressure-sensitive switch for controlling the electric slider is fixedly arranged at the bottom of the transmission rod.

[0024] When the pressure plate swings, it can push the transmission rod to squeeze the pressure-sensitive switch, so that the electric slider can drive the inner cone ring closer to the synchronous cone.

[0025] Furthermore, a counterweight is connected inside the rotating shaft, and the counterweight is symmetrically arranged with the protrusion;

[0026] When the rotating shaft is stationary, the protrusion is located on top of the counterweight.

[0027] Furthermore, the crushing assembly is provided with a liquid spraying assembly, which includes a nozzle. When the scraper approaches the crushing roller, the nozzle sprays cleaning liquid onto the crushing roller.

[0028] Furthermore, a dehumidifying cotton is also connected to the lower surface of the baffle, and the dehumidifying cotton is in contact with the crushing roller.

[0029] Furthermore, the crushing assembly also includes a rotating roller, which is rotatably disposed at the swing end of the baffle.

[0030] The beneficial effects of this invention are analyzed as follows:

[0031] A cleaning mechanism for a double roll crusher includes a crushing assembly, which includes a rotatably mounted crushing roll; a scraping assembly is provided on the crushing assembly; the scraping assembly includes a scraper, which is movably mounted on the crushing assembly and can move closer to or further away from the crushing roll when it moves; when there are adhering substances on the side wall of the crushing roll, when the part of the crushing roll with adhering substances is close to the scraper, the scraper moves closer to the crushing roll to scrape off the adhering substances.

[0032] Material is fed into the crushing assembly, where the crushing rollers rotate relative to each other to crush the material. When the material has a high moisture content, if the crushed material adheres to the crushing roller, the adhering material will move along with the rotation of the crushing roller. When the crushing roller rotates to the point where the adhering material is close to the scraper, the scraper moves and approaches the crushing roller, thus scraping off the adhering material on the crushing roller. The scraper only moves to the crushing roller when the adhering material is close, which reduces the wear on the crushing roller caused by the scraper, thus achieving a cleaning effect on the crushing roller while ensuring the service life of the crushing roller. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0036] Figure 3 This is a schematic diagram of the scraper section of the present invention;

[0037] Figure 4 This is a schematic diagram of the driven wheel of the present invention;

[0038] Figure 5 This is a schematic diagram of the liquid spraying assembly of the present invention.

[0039] icon:

[0040] 100. Crushing assembly; 110. Machine body; 120. Crushing roller; 130. Worm gear; 140. Worm; 150. Baffle; 160. Rotary roller; 200. Scraping assembly; 210. First support; 220. First hydraulic rod; 230. Scraper; 300. Transmission assembly; 310. Second support; 320. Driven wheel; 321. Synchronizing cone; 330. Connecting seat; 331. Inner cone ring; 332. 333. Electric slider; 340. Pressure-sensitive switch; 341. Rotating shaft; 342. Protrusion; 343. Counterweight; 350. Drive wheel; 351. Belt; 360. Second hydraulic rod; 361. Oil pipe; 370. Pressure plate; 380. Transmission rod; 400. Spraying assembly; 410. Nozzle; 420. Piston rod; 430. Piston cylinder; 440. Suction pipe; 450. Discharge pipe; 460. Dehumidifying cotton. Detailed Implementation

[0041] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Example: Figures 1-5 As shown, a cleaning mechanism for a double-roll crusher includes a crushing assembly 100, which includes a rotatably disposed crushing roller 120. A scraping assembly 200 is disposed on the crushing assembly 100. The scraping assembly 200 includes a scraper 230, which is movably disposed on the crushing assembly 100. When the scraper 230 moves, it can approach or move away from the crushing roller 120. When there are adhering substances on the side wall of the crushing roller 120, when the part of the crushing roller 120 with adhering substances is close to the scraper 230, the scraper 230 approaches the crushing roller 120 to scrape off the adhering substances.

[0045] The working mechanism of the cleaning mechanism of the double roll crusher provided in this embodiment is as follows:

[0046] Material is fed into the crushing assembly 100. The crushing rollers 120 of the crushing assembly 100 rotate relative to each other to crush the material. When the material has a high moisture content, if the crushed material adheres to the crushing rollers 120, the adhering material will move along with the rotation of the crushing rollers 120. When the crushing rollers 120 rotate to the point where the adhering material is close to the scraper 230, the scraper 230 moves and approaches the crushing rollers 120, thus scraping off the adhering material on the crushing rollers 120. The scraper 230 only moves to the crushing rollers 120 when the adhering material is close, which reduces the wear on the crushing rollers 120 caused by the scraper 230, thus achieving a cleaning effect on the crushing rollers 120 and ensuring the service life of the crushing rollers 120. There is no need to stop the machine for cleaning, thus ensuring the production efficiency of the crusher.

[0047] Among the optional methods in this embodiment, the more preferred one is:

[0048] The scraping assembly 200 also includes a first hydraulic rod 220 connected to the crushing assembly 100, the output end of which is connected to the scraper 230; the extension and retraction of the first hydraulic rod 220 can drive the scraper 230 to move closer to or away from the crushing roller 120.

[0049] When the two crushing rollers 120 move closer or further apart, the fineness of the material crushing can be adjusted. The first hydraulic rod 220 is connected to the crushing assembly 100 through the first bracket 210. The first bracket 210 can move synchronously with the crushing rollers 120, thereby ensuring that the relative position of the scraper 230 and the crushing rollers 120 is maintained.

[0050] Regarding the structure of the transmission assembly 300, specifically:

[0051] It also includes a transmission assembly 300, which includes a rotating shaft 340 that rotates on the crushing assembly 100. A protrusion 341 is provided on the side wall of the rotating shaft 340. The rotation angle of the protrusion 341 is synchronized with the attachment on the side wall of the crushing roller 120. A second hydraulic rod 360 is also connected to the crushing assembly 100. An oil pipe 361 is connected between the second hydraulic rod 360 and the first hydraulic rod 220. The protrusion 341 can press against the output end of the second hydraulic rod 360 to extend the first hydraulic rod 220.

[0052] When no adhering material is attached to the crushing roller 120, the rotating shaft 340 is stationary. When adhering material is attached to the crushing roller 120, the rotating shaft 340 rotates synchronously with the crushing roller 120. The rotation angle of the protrusion 341 on the rotating shaft 340 is synchronized with the rotation angle of the adhering material on the crushing roller 120. The rotation angle of the protrusion 341 is slightly greater than that of the adhering material. Thus, when the protrusion 341 presses the second hydraulic rod 360 to make the scraper 230 approach the crushing roller 120, the adhering material on the crushing roller 120 can move to the scraper 230 after the scraper 230 approaches, thereby ensuring that the adhering material can be scraped off by the scraper 230. The protrusion 341 is of sufficient size to ensure that the contact time between the protrusion 341 and the second hydraulic rod 360 is sufficient, so that the scraper 230 remains close to the crushing roller 120 for a period of time, ensuring that it can scrape off the adhering material on the crushing roller 120.

[0053] Among the optional methods in this embodiment, the more preferred one is:

[0054] The crushing assembly 100 also includes a swingable baffle 150, the movable end of which contacts the side wall of the crushing roller 120; when the attachment on the side wall of the crushing roller 120 moves to the movable end of the baffle 150, it can push the baffle 150 to swing upward; the crushing assembly 100 is also connected to a driven wheel 320 that rotates at the same speed as the crushing roller 120, and the driven wheel 320 is coaxially arranged with the rotating shaft 340; when the baffle 150 swings upward, the driven wheel 320 drives the rotating shaft 340 to rotate synchronously.

[0055] The baffle 150 is hinged to the machine body 110 and swings downward under gravity to contact the side wall of the crushing roller 120. The baffle 150 is designed to guide the material fed into the crushing assembly 100 between the two crushing rollers 120, thereby ensuring that the material can be ground and crushed by the crushing rollers 120. The swing end of the baffle 150 contacts the side wall of the crushing roller 120. If there are attached objects on the side wall of the crushing roller 120, the protruding attachments can move to the swing end of the baffle 150 as the crushing roller 120 rotates. Thus, the protruding attachments can push the baffle 150 to swing upward. That is, the upward swing of the baffle 150 reflects the attachments on the side wall of the crushing roller 120. When the baffle 150 swings upward, the rotating shaft 340 is driven by the driven wheel 320 to rotate, thereby driving the scraper 230 to move. The crushing roller 120 is cleaned to remove adhering materials. The driven wheel 320 and the driving wheel 350 are connected by a belt 351. The diameters of the driving wheel 350 and the driven wheel 320 are equal, thus ensuring that the rotation angle of the driven wheel 320 is equal to that of the driving wheel 350. The driving wheel 350 is coaxially connected to the crushing roller 120, which allows the protrusion 341 on the rotating shaft 340 to rotate synchronously with the adhering materials on the side wall of the crushing roller 120. In addition, the angle position of the scraper 230 relative to the crushing roller 120 is consistent with the angle position of the second hydraulic rod 360 relative to the rotating shaft 340. Thus, when the protrusion 341 contacts the second hydraulic rod 360, the adhering materials on the crushing roller 120 also move to the position of the scraper 230, ensuring that the adhering materials on the side wall of the crushing roller 120 are scraped off.

[0056] Among the optional methods in this embodiment, the more preferred one is:

[0057] An inner conical ring 331 is slidably connected to the side wall of the rotating shaft 340. A synchronous cone 321 is coaxially connected to the end of the driven wheel 320. Both the outer conical surface of the synchronous cone 321 and the inner conical surface of the inner conical ring 331 are provided with anti-slip textures. When the inner conical ring 331 moves closer to the synchronous cone 321 so that the inner conical surface of the inner conical ring 331 fits against the outer conical surface of the synchronous cone 321, the driven wheel 320 can drive the rotating shaft 340 to rotate synchronously.

[0058] The crushing assembly 100 is connected to a second support 310, and the driven wheel 320 rotates on the second support 310 to support the driven wheel 320. The inner cone ring 331 is slidably connected to the rotating shaft 340 to ensure that the inner cone ring 331 can rotate synchronously with the rotating shaft 340 and slide axially relative to the rotating shaft 340. Thus, after the inner cone ring 331 contacts the synchronous cone 321, the anti-slip texture on the contact surface of the two allows the driven wheel 320 to drive the rotating shaft 340 to rotate synchronously.

[0059] Among the optional methods in this embodiment, the more preferred one is:

[0060] The transmission assembly 300 also includes an electric slider 332 that slides axially along the rotating shaft 340. A connecting seat 330 is connected to the electric slider 332, and the inner cone ring 331 rotates on the connecting seat 330. A pressure plate 370 is connected to the end of the swing shaft of the baffle 150. A transmission rod 380 is vertically slidably arranged at the lower part of the pressure plate 370. A pressure-sensitive switch 333 for controlling the electric slider 332 is fixedly arranged at the bottom of the transmission rod 380. When the pressure plate 370 swings, it can push the transmission rod 380 to squeeze the pressure-sensitive switch 333 so that the electric slider 332 drives the inner cone ring 331 to approach the synchronous cone 321.

[0061] When the baffle 150 is pushed upward by the attached object, the pressure plate 370 on the baffle 150 swings and pushes the transmission rod 380. At this time, the transmission rod 380 moves vertically downward and presses the pressure-sensitive switch 333. At this time, the pressure-sensitive switch 333 controls the electric slider 332 to slide on the second bracket 310. As a result, the connecting seat 330 connected to the pressure-sensitive switch 333 drives the inner cone ring 331 to move closer to the synchronous cone 321 and make the inner cone ring 331 contact the synchronous cone 321. At this time, the driven wheel 320 drives the rotating shaft 340 to rotate. After the rotating shaft 340 rotates one revolution, the electric slider 332 retracts so that the inner cone ring 331 disengages from the synchronous cone 321. At this time, the rotating shaft 340 stops rotating. Here, a displacement sensor can be used to detect the rotation angle of the rotating shaft 340 to realize the timing control of the retraction of the electric slider 332.

[0062] After the scraper 230 retracts, the distance between it and the crushing roller 120 is not far. Therefore, if the amount of adhering material on the crushing roller 120 is large, the excessively protruding part of the adhering material can still be scraped off by the scraper 230, thus ensuring that the baffle 150 is not raised too high.

[0063] Among the optional methods in this embodiment, the more preferred one is:

[0064] A counterweight 342 is connected inside the rotating shaft 340. The counterweight 342 and the protrusion 341 are arranged symmetrically. When the rotating shaft 340 is stationary, the protrusion 341 is located above the counterweight 342.

[0065] After the deposits on the side wall of the crushing roller 120 are scraped off, the rotating shaft 340 no longer rotates synchronously with the driven wheel 320. At this time, the gravity of the counterweight 342 causes the rotating shaft 340 to be in a state where the protrusion 341 is at the top and the counterweight 342 is at the bottom. This makes the position of the protrusion 341 relative to the rotating shaft 340 consistent with the contact position of the baffle 150 and the crushing roller 120. This allows the protrusion 341 to move synchronously with the deposits that have moved past the baffle 150 when deposits adhere to the crushing roller 120.

[0066] Regarding the structure of the liquid spraying assembly 400, specifically:

[0067] The crushing assembly 100 is provided with a liquid spraying assembly 400, which includes a nozzle 410. When the scraper 230 approaches the crushing roller 120, the nozzle 410 sprays cleaning liquid onto the crushing roller 120.

[0068] A piston rod 420 is connected to the scraper 230, and a piston cylinder 430 is connected to the machine body 110. The piston rod 420 slides inside the piston cylinder 430. When the scraper 230 approaches the crushing roller 120, the scraper 230 drives the piston rod 420 to slide into the piston cylinder 430, so that the cleaning fluid in the piston cylinder 430 is sprayed onto the crushing roller 120 through the outlet pipe 450 and the nozzle 410, so that the scraper 230 assists in scraping off the attachments on the crushing roller 120. The extraction pipe 440 connected to the piston cylinder 430 is connected to external cleaning fluid to replenish the piston cylinder 430. When the scraper 230 retracts, the piston rod 420 moves, and at this time the piston cylinder 430 extracts the cleaning fluid through the extraction pipe 440 for later use.

[0069] Among the optional methods in this embodiment, the more preferred one is:

[0070] The lower surface of the baffle 150 is also connected to a dehumidifying cotton 460, which is in contact with the crushing roller 120.

[0071] The dehumidifying cotton 460 is located on the upper part of the scraper 230. After the adhering material on the crushing roller 120 is scraped off, the residual cleaning liquid on the crushing roller 120 can be wiped off by the dehumidifying cotton 460, thereby preventing the outer wall of the crushing roller 120 from becoming damp and causing the adhering material to re-adhere.

[0072] Among the optional methods in this embodiment, the more preferred one is:

[0073] The crushing assembly 100 also includes a rotating roller 160, which is rotatably disposed at the swing end of the baffle 150.

[0074] After the baffle 150 swings down under gravity, the rotating roller 160 at its swing end comes into contact with the crushing roller 120. When the crushing roller 120 rotates, it drives the rotating roller 160 to rotate as well. The setting of the rotating roller 160 reduces the friction between the baffle 150 and the crushing roller 120 bracket, thereby reducing the wear of the crushing roller 120.

[0075] Both crushing rollers 120 are connected to worm gears 130 at the same end. Both worm gears 130 are meshed with worms 140, and the teeth of the meshing parts of the worms 140 and the two worm gears 130 are opposite in direction, so as to ensure that the unidirectional rotating worm 140 can synchronously drive the two worm gears 130 to rotate at the same speed and in opposite directions.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving double-roll crusher, comprising a crushing assembly (100), wherein the crushing assembly (100) includes a rotatably disposed crushing roll (120), characterized in that: The crushing component (100) is provided with a scraping component (200); The scraping assembly (200) includes a scraper (230) which is movably disposed on the crushing assembly (100) and can move closer to or further away from the crushing roller (120) when it moves. When the material adheres to the side wall of the crushing roller (120), when the part of the crushing roller (120) with the material adhering to it is close to the scraper (230), the scraper (230) moves close to the crushing roller (120) to scrape off the material. The scraping assembly (200) further includes a first hydraulic rod (220) connected to the crushing assembly (100), the output end of the first hydraulic rod (220) being connected to the scraper (230); The extension and retraction of the first hydraulic rod (220) can drive the scraper (230) to move closer to or away from the crushing roller (120). It also includes a transmission assembly (300), which includes a rotating shaft (340) that rotates on the crushing assembly (100). A protrusion (341) is provided on the side wall of the rotating shaft (340), and the rotation angle of the protrusion (341) is synchronized with the attachment on the side wall of the crushing roller (120). The crushing assembly (100) is also connected to a second hydraulic rod (360), and an oil pipe (361) is connected between the second hydraulic rod (360) and the first hydraulic rod (220). The protrusion (341) can be pressed against the output end of the second hydraulic rod (360) to cause the first hydraulic rod (220) to extend; The crushing assembly (100) also includes a swingable baffle (150), the movable end of which contacts the side wall of the crushing roller (120); When the attachments on the side wall of the crushing roller (120) move to the movable end of the baffle (150), the baffle (150) can be pushed to swing upward. The crushing assembly (100) is also connected to a driven wheel (320) that rotates at the same speed as the crushing roller (120), and the driven wheel (320) is coaxially arranged with the rotating shaft (340); When the baffle (150) swings upward, the driven wheel (320) drives the rotating shaft (340) to rotate synchronously.

2. The energy-saving double-roll crusher according to claim 1, characterized in that: An inner conical ring (331) is slidably connected to the side wall of the rotating shaft (340), and a synchronous cone (321) is coaxially connected to the end of the driven wheel (320). The outer conical surface of the synchronous cone (321) and the inner conical surface of the inner conical ring (331) are both provided with anti-slip textures. When the inner conical ring (331) moves closer to the synchronous cone (321) so that the inner conical surface of the inner conical ring (331) fits against the outer conical surface of the synchronous cone (321), the driven wheel (320) can drive the rotating shaft (340) to rotate synchronously.

3. The energy-saving double-roll crusher according to claim 2, characterized in that: The transmission assembly (300) further includes an electric slider (332) that slides axially along the rotating shaft (340), and a connecting seat (330) is connected to the electric slider (332), and the inner cone ring (331) rotates on the connecting seat (330). The end of the swing shaft of the baffle (150) is connected to a pressure plate (370), and a transmission rod (380) is vertically slidably arranged at the lower part of the pressure plate (370). A pressure-sensitive switch (333) for controlling the electric slider (332) is fixedly arranged at the bottom of the transmission rod (380). When the pressure plate (370) swings, it can push the transmission rod (380) to squeeze the pressure-sensitive switch (333) so that the electric slider (332) drives the inner cone ring (331) to move closer to the synchronous cone (321).

4. The energy-saving double-roll crusher according to claim 1, characterized in that: A counterweight (342) is connected inside the rotating shaft (340), and the counterweight (342) and the protrusion (341) are arranged symmetrically. When the rotating shaft (340) is stationary, the protrusion (341) is located above the counterweight (342).

5. The energy-saving double-roll crusher according to claim 4, characterized in that: The crushing assembly (100) is provided with a liquid spraying assembly (400), which includes a nozzle (410). When the scraper (230) approaches the crushing roller (120), the nozzle (410) sprays cleaning liquid onto the crushing roller (120).

6. The energy-saving double-roll crusher according to claim 5, characterized in that: The lower surface of the baffle (150) is also connected to a dehumidifying cotton (460), which is in contact with the crushing roller (120).

7. The energy-saving double-roll crusher according to claim 6, characterized in that: The crushing assembly (100) also includes a rotating roller (160), which is rotatably disposed at the swing end of the baffle (150).