CN220969320U - Crusher with hammer head cleaning device - Google Patents

Abstract

The utility model discloses a crusher with a hammer head cleaning device, which relates to the technical field of crushing devices for laboratory analysis and comprises a base, a crushing driving device, a second cleaning device and a crusher body, wherein the bottom of the crusher body is fixedly arranged on the base through a fixing seat, a crushing cavity is arranged in the crusher body, a feeding hole is formed in the top of the crusher body, the bottom of the feeding hole is communicated with the crushing cavity, one end of the crushing driving device is fixedly connected to the base, the other end of the crushing driving device penetrates through the crusher body and stretches into the crushing cavity and is hinged with a crushing hammer, one side, far away from the feeding hole, of the crushing driving device is provided with the second cleaning cavity, the second cleaning cavity is communicated with the crushing cavity, one end of the second cleaning device is fixedly connected to the crusher body, and the other end of the second cleaning device is slidingly connected to the second cleaning cavity and is used for cleaning the crushing hammer. According to the utility model, one end of the crushing driving device is hinged with the crushing hammer, when the rotating speed of the crushing hammer is low, the hinging angle is reduced, and the second cleaning device can clean accumulated materials adhered to the crushing hammer, so that the crushing efficiency is improved.

Description

Crusher with hammer head cleaning device

Technical Field

The utility model relates to the technical field of crushing devices for laboratory analysis, in particular to a crusher with a hammer cleaning device.

Background

Aiming at the problems of blocking sieve holes and residual accumulated materials in a crushing cavity when crushing small-granularity samples with large moisture content of a crusher used in experimental analysis of coal and mineral substances in industries such as coal mines, electric power, metallurgy and the like, the sample preparation precision and analysis result are seriously influenced. Patent CN217747382U discloses a breaker for gangue brickmaking, including the crushing case, the inclined screen frame is installed on the upper portion of screening cavity, the inclined tip of inclined screen frame extends to the upper portion of crushing cavity, crushing cavity has set gradually two parallel crushing pair roller cutter frame and supplementary crushing cutter frame from top to bottom, can carry out size screening through inclined screen frame at first after the gangue gets into the crushing case, the less gangue of specification can fall into the screening cavity, and the great gangue of specification can slide into crushing pair roller cutter frame by inclined screen frame and carry out preliminary crushing, then can fall into supplementary crushing cutter frame through the gangue after preliminary crushing and carry out secondary crushing, and the little gangue that falls into in the screening cavity only need slide into supplementary crushing cutter frame in carry out primary crushing can. In the scheme, the cleaning device for the crushing pair roller cutter frame and the auxiliary crushing cutter frame is not used, and residual accumulated materials are attached to the cutter frame and can influence the crushing process, so that the sample preparation precision and the analysis result are influenced.

Accordingly, there is a need for a crusher with a hammer head cleaning device.

Disclosure of utility model

In view of the above, the present utility model provides a crusher with a hammer cleaning device to solve the above-mentioned problems in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

The utility model provides a breaker with tup cleaning device, includes base, crushing drive arrangement, anti-blocking device, first cleaning device, second cleaning device and breaker, breaker bottom pass through fixing base fixed mounting in on the base, breaker inside is equipped with the breaking cavity, and the bottom is equipped with the discharge gate, anti-blocking device is located the breaking cavity with between the discharge gate, breaker top is equipped with the feed inlet, feed inlet bottom intercommunication the breaking cavity, feed inlet one side is equipped with first cleaning chamber, first cleaning device one end fixed connection in on the breaker, the other end sliding connection in first cleaning intracavity is used for the clearance the feed inlet, crushing drive arrangement one end fixed connection in on the base, the other end runs through the breaker stretches into the breaking cavity and articulates there is the breaking hammer, crushing drive arrangement keeps away from feed inlet one side is equipped with the second cleaning chamber, the second cleaning chamber intercommunication the breaking cavity, second cleaning device one end fixed connection in on the breaking hammer, the other end sliding connection in the breaker is used for cleaning in the second cleaning chamber.

Further, the crushing driving device comprises a main motor and a main shaft, the fixed end of the main motor is fixedly arranged on the base, the output end of the main motor is fixedly connected with a first belt pulley, one end of the main shaft is fixedly connected with a second belt pulley, the other end of the main shaft penetrates through the crusher body and stretches into the crushing cavity, and is fixedly connected with a rotor disc, the breaking hammer is hinged to the rotor disc, and the first belt pulley is connected with the second belt pulley through belt transmission.

Further, the gap between the breaking hammer and the inner wall of the breaking cavity in the circumferential direction is smaller than the discharging particle size.

Further, the second cleaning device comprises a second cylinder, a second connecting plate, a cleaning machine body, a spring and a second cleaning plate, wherein the fixed end of the second cylinder is fixedly installed on the crusher body, one end of the second connecting plate is fixedly connected with the telescopic end of the second cylinder, the other end of the second connecting plate is fixedly connected with the cleaning machine body, the cleaning machine body is slidingly connected in the second cleaning cavity, the cleaning machine body is far away from one end of the second connecting plate, one end of the spring is fixedly arranged in the cleaning groove, the other end of the spring is fixedly connected with the second cleaning plate, one end of the second cleaning plate is slidingly connected in the cleaning groove, and the other end of the second cleaning plate extends out of the cleaning groove and is used for cleaning the breaking hammer.

Further, a limiting groove is formed in the second cleaning plate, a limiting block matched with the limiting groove is arranged on the inner wall of the cleaning groove, and the limiting block is used for limiting the second cleaning plate to move relative to the cleaning body towards the crushing cavity when the cleaning body moves towards the crushing cavity.

Further, one end of the second cleaning plate, which is far away from the spring, is provided with a detachable cleaning head.

Further, the first cleaning device comprises a first cylinder, a first connecting plate and a first cleaning plate, the fixed end of the first cylinder is fixedly installed on the crusher body, one end of the first connecting plate is fixedly connected with the telescopic end of the first cylinder, the other end of the first connecting plate is fixedly connected with the first cleaning plate, and the first cleaning plate is slidably connected in the first cleaning cavity.

Further, the anti-blocking device comprises two symmetrically arranged roller screen groups, each roller screen group comprises a first roller screen and a second roller screen, each first roller screen is provided with a round groove, each second roller screen is arranged outside each second roller screen, the round grooves on each first roller screen are crossed with the round grooves on each second roller screen, one end of each first roller screen is rotationally connected to the bottom of the crusher body, the other end of each first roller screen penetrates through the inner wall of the crusher body to extend outwards and is fixedly connected with a first gear, one end of each second roller screen is rotationally connected to the bottom of the crusher body, the other end of each second roller screen penetrates through the inner wall of the crusher body to extend outwards and is fixedly connected with a second gear, a driving motor is fixedly installed on the base, a driving gear is arranged on the output end of each driving motor, each driving gear is meshed with each first gear, and each first gear is meshed with each second gear.

Further, the anti-blocking device further comprises an anti-blocking plate, the anti-blocking plate comprises a first scraping plate, a second scraping plate and a third scraping plate, wherein scraping grooves are formed in the first scraping plate, the first scraping plate is fixedly arranged on the left side of the bottom of the crusher body, the scraping grooves on the first scraping plate and the left side of the roller screen groups are arranged in a cross mode through round grooves on the first roller screen, the second scraping plate is fixedly arranged on the right side of the bottom of the crusher body, the scraping grooves on the second scraping plate and the right side of the roller screen groups are arranged in a cross mode through round grooves on the first roller screen, the third scraping plate is fixedly arranged between the adjacent roller screen groups, and the scraping grooves on the third scraping plate and the round grooves on the two adjacent second roller screens are arranged in a cross mode.

Further, the first gear addendum circle diameter is greater than the second gear addendum circle diameter.

The utility model has the beneficial effects that:

According to the utility model, one end of the crushing driving device is hinged with the crushing hammer, when the rotating speed of the crushing hammer is low, the hinging angle is reduced, and the second cleaning device can clean accumulated materials adhered to the crushing hammer, so that the crushing efficiency is improved; the first cleaning device is used for cleaning the feed inlet; the bottom of the crusher body is provided with an anti-blocking device, so that the blocking of a feed inlet and a discharge outlet is avoided, and no residual accumulated materials are ensured in the crushing cavity; the gap between the breaking hammer and the inner wall of the breaking cavity in the circumferential direction is smaller than the discharge particle size, so that no accumulated material remains on the inner wall of the breaking cavity in the circumferential direction; the second cylinder drives the cleaning machine body to slide in the second cleaning cavity, so that the second cleaning plate stretches into the crushing cavity and is used for cleaning the breaking hammer with reduced rotating speed and reduced hinge angle after the crushing work is completed; the second cleaning plate is connected in the cleaning groove in a sliding manner through a spring, one end with the cleaning head is abutted against the breaking hammer in the breaking hammer cleaning process, and can retract along with the rotation of the breaking hammer, so that the rigid collision with the breaking hammer is avoided, and the contact between the cleaning head and the breaking hammer can be always kept; the second cleaning plate is provided with a limiting groove, the inner wall of the cleaning groove is provided with a limiting block matched with the limiting groove, and when the cleaning machine body moves towards the crushing cavity, the limiting block is used for limiting the second cleaning plate to move towards the crushing cavity relative to the cleaning machine body, so that the extending length of the second cleaning plate can be accurately controlled, and the cleaning hammer is convenient to clean; the cleaning head is detachably arranged on the second cleaning plate and is replaced regularly, so that the cleaning quality is ensured; the first cylinder drives the first cleaning plate to slide in the first cleaning cavity, so that the blockage of the feed inlet is avoided; the diameter of the first gear addendum circle is larger than that of the second gear addendum circle, so that the first roller screen and the second roller screen form different rotating speeds, and the first roller screen and the second roller screen rotate relatively, so that blanking is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the internal structure of a crusher with a hammer head cleaning device of the present utility model during crushing operation;

FIG. 2 is a schematic view of the internal structure of the crusher with the hammer head cleaning device for cleaning operation;

FIG. 3 is a schematic view of a second cleaning apparatus according to the present utility model;

FIG. 4 is a schematic view of the structure of the roller screen assembly and the anti-blocking plate of the present utility model;

FIG. 5 is a perspective view of a crusher with a hammer head cleaning device according to the present utility model;

FIG. 6 is a top view of a crusher with a hammer head cleaning device according to the present utility model;

FIG. 7 is a front view of a crusher with a hammer head sweeping device of the present utility model;

wherein, in the figure:

1-a base; 11-a first scraper; 12-a second scraper; 13-a third squeegee; 14-fixing base; 2-crushing the machine body; 21-a feed inlet; 22-crushing cavity; 3-a main motor; 31-a first pulley; 4-a main shaft; 41-a second pulley; 5-a belt; 61-a first cylinder; 62-a first connection plate; 63-a first cleaning plate; 7, cleaning the machine body; 71-a second cylinder; 72-a second connection plate; 73-a second cleaning plate; 731-a limit groove; 732-cleaning head; 74-springs; 75-limiting blocks; 8-driving a motor; 81-a first roller screen; 82-a second roller screen; 83-a first gear; 84-a second gear; 9-rotor disc; 91-breaking hammer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-7, the utility model discloses a crusher with a hammer head cleaning device, which comprises a base 1, a crushing driving device, an anti-blocking device, a first cleaning device, a second cleaning device and a crusher body 2, wherein the bottom of the crusher body 2 is fixedly arranged on the base 1 through a fixed seat 14, a crushing cavity 22 is arranged in the crusher body 2, a discharging hole is arranged at the bottom of the crusher body, the anti-blocking device is positioned between the crushing cavity 22 and the discharging hole, a feeding hole 21 is arranged at the top of the crusher body 2, the bottom of the feeding hole 21 is communicated with the crushing cavity 22, a first cleaning cavity is arranged at one side of the feeding hole 21, one end of the first cleaning device is fixedly connected with the crusher body 2, the other end of the first cleaning device is slidingly connected with the first cleaning cavity for cleaning the feeding hole 21, one end of the crushing driving device is fixedly connected with the base 1, the other end of the crushing driving device penetrates through the crusher body 2 and stretches into the crushing cavity 22 and is hinged with a crushing hammer 91, a second cleaning cavity is arranged at one side of the crushing driving device far away from the feeding hole 21, the second cleaning cavity is communicated with the crushing cavity 22, one end of the second cleaning device is fixedly connected with the crusher body and the second cleaning hammer 91 is slidingly connected with the second cleaning hammer body. According to the utility model, one end of the crushing driving device is hinged with the crushing hammer 91, when crushing work is carried out, the crushing driving device enables the rotating speed of the crushing hammer 91 to be higher, the hinging angle of the crushing hammer 91 and the crushing driving device is close to 90 degrees under the inertia effect, the contact surface between the crushing hammer 91 and crushed materials is increased, and the crushing efficiency is improved; when the crushing work is finished, the crushing driving device reduces the rotating speed of the crushing hammer 91, when the rotating speed of the crushing hammer 91 is slower, the hinge angle between the crushing hammer 91 and the crushing driving device is smaller, and the second cleaning device stretches into the crushing cavity 22 and is used for cleaning accumulated materials adhered to the crushing hammer 91, so that the influence of the accumulated materials on the crushing efficiency is avoided; the first cleaning device is used for cleaning the feed inlet 21; the bottom of the crushing machine body 2 is provided with an anti-blocking device, so that the blocking of a feed inlet 21 and a discharge outlet is avoided, and no residual accumulated materials are ensured in the crushing cavity 22.

The crushing driving device comprises a main motor 3 and a main shaft 4, wherein the fixed end of the main motor 3 is fixedly arranged on the base 1, the output end of the main motor is fixedly connected with a first belt pulley 31, one end of the main shaft 4 is fixedly connected with a second belt pulley 41, the other end of the main shaft penetrates through the crushing machine body 2 to extend into the crushing cavity 22 and is fixedly connected with a rotor disc 9, the crushing hammer 91 is hinged to the rotor disc 9, and the first belt pulley 31 is in transmission connection with the second belt pulley 41 through a belt 5. The main motor 3 can drive the main shaft 4 to rotate, so that the breaking hammer 91 can break the raw materials.

The clearance between the breaking hammer 91 and the inner wall of the breaking cavity 22 in the circumferential direction is smaller than the discharge grain diameter, so that no accumulated material remains on the inner wall of the breaking cavity 22 in the circumferential direction.

The second cleaning device comprises a second air cylinder 71, a second connecting plate 72, a cleaning machine body 7, a spring 74 and a second cleaning plate 73, wherein the fixed end of the second air cylinder 71 is fixedly arranged on the crushing machine body 2, one end of the second connecting plate 72 is fixedly connected with the telescopic end of the second air cylinder 71, the other end of the second connecting plate is fixedly connected with the cleaning machine body 7, the cleaning machine body 7 is slidingly connected in a second cleaning cavity, one end of the cleaning machine body 7, far away from the second connecting plate 72, is provided with a cleaning groove, one end of the spring 74 is fixedly arranged in the cleaning groove, the other end of the spring is fixedly connected with the second cleaning plate 73, one end of the second cleaning plate 73 is slidingly connected in the cleaning groove, and the other end of the second cleaning plate extends out of the cleaning groove and is used for cleaning a crushing hammer 91. When the breaking hammer is cleaned, the second cylinder 71 drives the cleaning machine body 7 to slide in the second cleaning cavity, so that the second cleaning plate 73 extends into the breaking cavity 22 and is used for cleaning the breaking hammer 91 with reduced rotating speed and reduced hinge angle after the breaking work is completed; the second cleaning plate 73 is slidably connected in the cleaning groove through the spring 74, and in the process of cleaning the breaking hammer 91, one end of the second cleaning plate 73 is abutted against the breaking hammer, and can retract along with the rotation of the breaking hammer 91, so that rigid collision with the breaking hammer 91 is avoided, and the contact with the breaking hammer 91 can be always kept.

The second cleaning plate 73 is provided with a limiting groove 731, the inner wall of the cleaning groove is provided with a limiting block 75 matched with the limiting groove 731, and when the cleaning machine body 7 moves towards the crushing cavity 22, the limiting block 75 is used for limiting the second cleaning plate 73 to move towards the crushing cavity 22 relative to the cleaning machine body 7. The extending length of the second cleaning plate 73 can be precisely controlled, so that the breaking hammer 91 can be cleaned conveniently.

The end of the second cleaning plate 73, which is far away from the spring 74, is provided with a detachable cleaning head 732, which is replaced periodically, so as to ensure cleaning quality.

The first cleaning device comprises a first air cylinder 61, a first connecting plate 62 and a first cleaning plate 63, wherein the fixed end of the first air cylinder 61 is fixedly arranged on the crusher body 2, one end of the first connecting plate 62 is fixedly connected with the telescopic end of the first air cylinder 61, the other end of the first connecting plate 62 is fixedly connected with the first cleaning plate 63, and the first cleaning plate 63 is slidably connected in the first cleaning cavity. The first cleaning plate 63 is driven to slide by controlling the first cylinder 61, so that residual accumulated materials in the feed inlet 21 are pushed into the crushing cavity 22, and the feed inlet 21 is prevented from being blocked.

The anti-blocking device comprises two symmetrically arranged roller screen groups, each roller screen group comprises a first roller screen 81 and a second roller screen 82 which are both provided with round grooves, each first roller screen 81 is arranged outside each second roller screen 82, the round grooves on each first roller screen 81 are arranged in a crossing mode with the round grooves on each second roller screen 82, one end of each first roller screen 81 is rotationally connected to the bottom of the crusher body 2, the other end of each first roller screen 81 penetrates through the inner wall of the crusher body 2 to extend outwards and is fixedly connected with a first gear 83, one end of each second roller screen 82 is rotationally connected to the bottom of the crusher body 2, the other end of each second roller screen 82 penetrates through the inner wall of the crusher body 2 to extend outwards and is fixedly connected with a second gear 84, a driving motor 8 is fixedly installed on the base 1, a driving gear is arranged at the output end of each driving motor 8 and is meshed with the corresponding first gear 83, and the first gear 83 is meshed with the corresponding second gear 84. The driving motor 8 may drive the first roller screen 81 to rotate together with the second roller screen 82.

The anti-blocking device further comprises an anti-blocking plate, the anti-blocking plate comprises a first scraping plate 11, a second scraping plate 12 and a third scraping plate 13, the first scraping plate 11 is fixedly arranged on the left side of the bottom of the crusher body 2, the scraping plate 11 is crossed with the round grooves on the first roller screen 81 in the left roller screen group, the second scraping plate 12 is fixedly arranged on the right side of the bottom of the crusher body 2, the scraping plate 12 is crossed with the round grooves on the first roller screen 81 in the right roller screen group, the third scraping plate 13 is fixedly arranged between the adjacent roller screen groups, and the scraping plate 13 is crossed with the round grooves on the two adjacent second roller screens 82. When the two roller screen groups rotate, the first scraping plate 11, the second scraping plate 12 and the third scraping plate 13 can clean the round grooves, and the round grooves are prevented from being blocked.

The diameter of the addendum circle of the first gear 83 is larger than that of the addendum circle of the second gear 84, so that the first roller screen 81 and the second roller screen 82 form different rotating speeds, and the first roller screen and the second roller screen rotate relatively, thereby facilitating blanking.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a breaker with tup cleaning device, its characterized in that includes base (1), crushing drive arrangement, anti-blocking device, first cleaning device, second cleaning device and breaker body (2), breaker body (2) bottom pass through fixing base (14) fixed mounting in on base (1), breaker body (2) inside is equipped with crushing chamber (22), and the bottom is equipped with the discharge gate, anti-blocking device is located between crushing chamber (22) and the discharge gate, breaker body (2) top is equipped with feed inlet (21), feed inlet (21) bottom intercommunication crushing chamber (22), feed inlet (21) one side is equipped with first cleaning chamber, first cleaning device one end fixed connection in on breaker body (2), the other end sliding connection in first cleaning intracavity is used for the clearance feed inlet (21), crushing drive arrangement one end fixed connection in on base (1), the other end runs through breaker body (2) stretch into in crushing chamber (22) and hinge joint has broken hammer (91), second cleaning device (21) one side is kept away from in the fixed connection of breaker body (2) first cleaning chamber (21), is used for cleaning the breaking hammer (91).

2. The crusher with the hammer cleaning device according to claim 1, wherein the crushing driving device comprises a main motor (3) and a main shaft (4), the fixed end of the main motor (3) is fixedly installed on the base (1), the output end of the main motor is fixedly connected with a first belt pulley (31), one end of the main shaft (4) is fixedly connected with a second belt pulley (41), the other end of the main shaft penetrates through the crusher body (2) to extend into the crushing cavity (22) and is fixedly connected with a rotor disc (9), the crushing hammer (91) is hinged on the rotor disc (9), and the first belt pulley (31) is in transmission connection with the second belt pulley (41) through a belt (5).

3. A crusher with a hammer head cleaning device according to claim 2, characterized in that the clearance between the crushing hammer (91) and the circumferential inner wall of the crushing chamber (22) is smaller than the discharge particle size.

4. A crusher with a hammer head cleaning device according to claim 2 or 3, characterized in that the second cleaning device comprises a second cylinder (71), a second connecting plate (72), a cleaning body (7), a spring (74) and a second cleaning plate (73), the fixed end of the second cylinder (71) is fixedly mounted on the crusher body (2), one end of the second connecting plate (72) is fixedly connected with the telescopic end of the second cylinder (71), the other end of the second connecting plate is fixedly connected with the cleaning body (7), the cleaning body (7) is slidably connected in the second cleaning cavity, one end of the cleaning body (7) away from the second connecting plate (72) is provided with a cleaning groove, one end of the spring (74) is fixedly arranged in the cleaning groove, the other end of the spring is fixedly connected with the second cleaning plate (73), one end of the second cleaning plate (73) is slidably connected in the cleaning groove, and the other end of the second cleaning plate extends out of the cleaning groove for the crushing hammer (91).

5. The crusher with the hammer cleaning device according to claim 4, wherein the second cleaning plate (73) is provided with a limiting groove (731), a limiting block (75) matched with the limiting groove (731) is arranged on the inner wall of the cleaning groove, and the limiting block (75) is used for limiting the second cleaning plate (73) to move into the crushing cavity (22) relative to the cleaning body (7) when the cleaning body (7) moves towards the crushing cavity (22).

6. A crusher with a hammer head cleaning device according to claim 4, characterized in that the end of the second cleaning plate (73) remote from the spring (74) is provided with a detachable cleaning head (732).

7. The crusher with the hammer head cleaning device according to claim 1, wherein the first cleaning device comprises a first air cylinder (61), a first connecting plate (62) and a first cleaning plate (63), the fixed end of the first air cylinder (61) is fixedly installed on the crusher body (2), one end of the first connecting plate (62) is fixedly connected with the telescopic end of the first air cylinder (61), the other end of the first connecting plate is fixedly connected with the first cleaning plate (63), and the first cleaning plate (63) is slidably connected in the first cleaning cavity.

8. The crusher with the hammer cleaning device according to claim 1, wherein the anti-blocking device comprises two symmetrically arranged roller screen groups, each roller screen group comprises a first roller screen (81) and a second roller screen (82) which are respectively provided with round grooves, the first roller screen (81) is arranged outside the second roller screen (82), the round grooves on the first roller screen (81) and the round grooves on the second roller screen (82) are arranged in a crossed manner, one end of the first roller screen (81) is rotationally connected to the bottom of the crusher body (2), the other end of the first roller screen (81) penetrates through the inner wall of the crusher body (2) to be outwards extended and fixedly connected with a first gear (83), one end of the second roller screen (82) is rotationally connected to the bottom of the crusher body (2), the other end of the second roller screen (82) penetrates through the inner wall of the crusher body to be outwards extended and fixedly connected with a second gear (84), a driving motor (8) is fixedly arranged on the base (1), one end of the driving motor (8) is rotationally connected with the round grooves, and the driving gear (83) is meshed with the first gear (83).

9. The crusher with the hammer head cleaning device according to claim 8, wherein the anti-blocking device further comprises an anti-blocking plate, the anti-blocking plate comprises a first scraper (11), a second scraper (12) and a third scraper (13) which are all provided with scraping grooves, the first scraper (11) is fixedly arranged on the left side of the bottom of the crusher body (2), the scraping grooves on the first scraper (11) are crossed with round grooves on the first roller screen (81) in the roller screen group on the left side, the second scraper (12) is fixedly arranged on the right side of the bottom of the crusher body (2), the scraping grooves on the second scraper (12) are crossed with round grooves on the first roller screen (81) in the roller screen group on the right side, the third scraper (13) is fixedly arranged between two adjacent roller screen groups, and the scraping grooves on the third scraper (13) are crossed with round grooves on two adjacent second roller screens (82).

10. A crusher with a hammer head cleaning device according to claim 8, characterized in that the first gear (83) has a larger addendum circle diameter than the second gear (84).