Mine stone crushing device

Abstract

The invention provides a mine stone crushing device which comprises a crusher body with a feeding port in the top and a discharging port in the bottom. The material distribution bin is installed at the bottom of the crusher body, a fine hopper is arranged in the material distribution bin and located below the discharge port, and a block hopper is arranged beside the fine hopper; a suction pump and a dust suction pipe are installed on the dust suction bin, and the dust suction pipe is located on one side below the discharging port. The filtering mechanism comprises a mounting plate, a filter screen cylinder and a cleaning assembly, the filter screen cylinder is arranged at the absorption opening in a blocking manner and rotationally mounted on the mounting plate, and the cleaning assembly is mounted on the mounting plate; the material screening mechanism comprises a material screening disc and a driving assembly, and the material screening disc is located between the discharging opening and the fine hopper. Crushed stones naturally fall down and collide with the screening disc, fine sand or loose fine stones on the surfaces of the stones are promoted to be separated from the stones, dust raising factors in the block hopper are greatly reduced, dust raising generated when the stones are poured out can be reduced, and the effective bearing capacity of the block hopper to the broken stones is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery and equipment, and particularly relates to a mining stone crushing device. Background Art

[0002] During the mining process, the mountain stones are mainly broken by blasting, and then the large mountain stones are broken into small pieces by a crusher for convenient subsequent transportation and processing. A crusher is a common mining machinery and equipment, which is mainly used for crushing stones.

[0003] A large amount of dust will be generated during the process of the crusher crushing the mining stones. In view of this, a Chinese patent with the publication number of CN119237091B discloses a feeding and crushing integrated machine, which has the effect of reducing the dust raising phenomenon.

[0004] However, not only will dust be generated during the crushing process of the stones, but also a large amount of fine sand and smaller stone particles will be generated due to the impact and friction between the broken pieces after the stones are broken. These fine sand and stone particles enter the hopper together with the broken stones, which not only occupies the bearing capacity of the hopper, but also generates a large amount of dust when the stones are poured out of the hopper subsequently. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention proposes a mining stone crushing device to solve the above problems.

[0006] The purpose of the present invention is achieved through the following technical solutions: A mining stone crushing device provided by the present invention includes: A crusher body, which has a feeding port at the top and a discharging port at the bottom; A material distribution bin, which is installed at the bottom of the crusher body. A fine material hopper is arranged below the discharging port inside the material distribution bin, and a lump material hopper is arranged beside the fine material hopper; A dust suction bin, on which a suction pump and a dust suction pipe are respectively installed. The distal end of the dust suction pipe is provided with a suction port, and the suction port is located at the lower side of the discharging port; A filtering mechanism, which includes a mounting plate, a filter screen cylinder and a cleaning component. The mounting plate is installed in the material distribution bin. The filter screen cylinder is blocked at the suction port and is axially rotatably installed on the mounting plate. The cleaning component is installed on the mounting plate and abuts against the surface of the filter screen cylinder; A screening mechanism, which includes a screening plate and a driving component. The screening plate is located between the discharging port and the fine material hopper, and one end of the screening plate facing the lump material hopper is inclined downward. The driving component can drive the filter screen cylinder to rotate when the stones fall onto the screening plate.

[0007] Further, the driving assembly includes a rotating plate, a pawl, a ratchet gear, and a resilience structure. The two ratchet gears are coaxially installed at both ends of the filter screen cylinder respectively. The two rotating plates are installed on both sides of the end of the screening tray away from the bulk material hopper and are rotatably connected to the inner walls of both sides of the material distribution bin. The axis of the rotating shaft of the rotating plate is collinear with the axis of the filter screen cylinder. A first driving rod is eccentrically connected between the two rotating plates. A pawl is rotatably installed on the outside of each ratchet gear on the first driving rod, and a torsion spring is connected between the pawl and the ratchet gear to provide an elastic force for abutting the pawl against the tooth surface of the ratchet gear. The resilience structure can provide an elastic force to keep the screening tray between the discharge port and the fine material hopper.

[0008] Further, the resilience structure includes a support rod and a first elastic member. The support rod is installed below the screening tray, and the first elastic member is connected between the support rod and the screening tray.

[0009] Further, the support rod is located below the end of the screening tray close to the bulk material hopper.

[0010] Further, the cleaning assembly includes two slider seats. Two sliding grooves are respectively formed on the mounting plate on the same side of the filter screen cylinder. The two slider seats are slidably installed in the corresponding sliding grooves along the axis direction of the filter screen cylinder, and a second elastic member is connected between the slider seats and the corresponding sliding grooves to provide an elastic force for bringing the two slider seats closer to each other. A cleaning brush that abuts against the surface of the filter screen cylinder is arranged on the slider seat. A second driving rod is connected between the two rotating plates. A pointed cone block is arranged on the second driving rod, and abutting blocks are respectively arranged on both sides of the moving path of the pointed cone block on the two slider seats.

[0011] Further, the moving paths of the two cleaning brushes do not overlap, and the ends of the two cleaning brushes close to each other both extend beyond each other.

[0012] Further, the screening tray includes a frame body and screening rods. Multiple screening rods are laid flat in the frame body at intervals, and each screening rod is parallel to the inclined direction of the screening tray.

[0013] Further, a cover plate is arranged outside the suction port, and the cover plate is placed against the surface of the filter screen cylinder.

[0014] Further, a branch pipe is connected to the dust suction pipe, and the distal end of the branch pipe extends above the feeding port.

[0015] Further, the fine material hopper and the bulk material hopper are respectively slidably installed at the bottom of the material distribution bin, and two notches for the fine material hopper and the bulk material hopper to move in and out are formed on one side of the material distribution bin.

[0016] As can be seen from the above technical solutions, a mine stone crushing device provided by the present invention: 1. By using the natural fall of the crushed stones to impact the screening tray, the fine sand or loose small stone particles on the surface of the stone material are separated from the stones. The fine sand and stone particles that are prone to dust generation problems are separately contained in the fine material hopper for subsequent processing, significantly reducing the dust generation factors in the block material hopper, facilitating the reduction of dust during the pouring of stones, and increasing the effective load-bearing capacity of the block material hopper for crushed stones. 2. The gravity of the crushed stones falling onto the screening tray is converted into a thrust force on the screening tray, pushing the screening tray to swing downward. This causes the first driving rod to rotate around the rotating shaft of the rotating plate, enabling the ratchet pawl to push the ratchet gear to rotate, and then driving the filter screen cylinder to rotate. The elastic return structure continuously applies an elastic force to reset the screening tray, allowing the ratchet pawl to retract along the tooth surface of the ratchet gear while the ratchet gear does not retract. As a result, the screening tray continuously swings under the impact of the crushed stones while the filter screen cylinder maintains one-way rotation. When the filter screen cylinder rotates, the attached substances on its surface are scraped off by the cleaning component. At the same time, the subsequent cleaned part of the filter screen cylinder also rotates to the front of the absorption port, continuously cleaning and renewing the surface of the filter screen cylinder to maintain its filtering effect. 3. When the screening tray continuously swings under the impact of the crushed stones, the pointed cone block will also repeatedly engage and disengage between the two abutting blocks. This enables the two sliding block seats to move back and forth along the axis of the filter screen cylinder for scraping when the filter screen cylinder is driven to rotate by the ratchet pawl and the ratchet gear, improving the cleaning effect on the surface of the filter screen cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for the specific embodiments will be briefly introduced below. In all the drawings, the components or parts are not necessarily drawn to actual scale.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the front view structural schematic diagram of the present invention; Figure 3 is Figure 2 a partial enlarged view of part A in Figure 4 is a three-dimensional structural schematic diagram of the present invention with the crusher body hidden; Figure 5 is a three-dimensional structural schematic diagram of the combination of the filtering mechanism and the screening mechanism in the present invention; Figure 6 is a three-dimensional structural schematic diagram of the filtering mechanism in the present invention; Figure 7 is a three-dimensional structural schematic diagram of the screening mechanism in the present invention; Reference numerals: Crusher body 1, feeding port 11, discharging port 12; Material separation bin 2, fine material hopper 21, block material hopper 22; Dust suction bin 3, suction pump 31, dust suction pipe 32, absorption port 33, covering plate 331, branch pipe 34; Filter mechanism 4, mounting plate 41, chute 411, filter screen cylinder 42, cleaning assembly 43, slider seat 431, second elastic member 432, cleaning brush 433, second driving rod 434, tapered block 435, abutting block 436; Screening mechanism 5, screening plate 51, frame body 511, screening rod 512, driving assembly 52, rotating plate 521, ratchet pawl 522, ratchet gear 523, first driving rod 524, support rod 525, first elastic member 526. Specific embodiments

[0019] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the drawings and preferred embodiments to describe in detail the specific embodiments, structures, features and their effects of the present invention as follows.

[0020] As Figure 1-7 shown, a mine stone crushing device provided in this embodiment includes a crusher body 1, a material separation bin 2, a dust suction bin 3, a filter mechanism 4 and a screening mechanism 5.

[0021] The crusher body 1 can be a stone crusher in the prior art. Since the crushing of mine stones is usually rough processing crushing, a jaw crusher can be selected. The top of the crusher body 1 has a feed inlet 11 and the bottom has a discharge outlet 12.

[0022] The material separation bin 2 is installed at the bottom of the crusher body 1. Inside the material separation bin 2, a fine material hopper 21 is arranged below the discharge outlet 12. The fine material hopper 21 is used to hold fine sand and stone particles with small volume and easy to generate dust. A block material hopper 22 is arranged beside the fine material hopper 21. The block material hopper 21 is used to hold the crushed stones.

[0023] Preferably, the fine material hopper 21 and the block material hopper 22 are respectively slidably installed at the bottom of the material separation bin 2. Two notches for the fine material hopper 21 and the block material hopper 22 to move in and out are provided on one side of the material separation bin 2, which is convenient for processing.

[0024] A suction pump 31 and a dust suction pipe 32 are respectively installed on the dust suction bin 3. The suction pump 31 can provide negative pressure attraction. The distal end of the dust suction pipe 32 is provided with an absorption port 33 and the absorption port 33 is located on one side below the discharge outlet 12. Specifically, the dust suction pipe 32 penetrates into the interior of the material separation bin 2 to absorb the dust generated by the collision of the crushed stones below the discharge outlet 12.

[0025] As Figure 3As shown, preferably, a cover plate 331 is provided outside the suction port 33. The cover plate 331 is placed against the surface of the filter screen cylinder 42, which is beneficial to concentrate the negative pressure attraction on the filter screen cylinder 42 and prevent sharp crushed stone slag from entering the suction port 33.

[0026] Preferably, a branch pipe 34 is connected to the dust suction pipe 32. The distal end of the branch pipe 34 extends above the feeding port 11. The branch pipe 34 is used to suck the dust generated by the stone crushing at the feeding port 11 and prevent the dust from polluting the surrounding construction environment.

[0027] The filtering mechanism 4 includes a mounting plate 41, a filter screen cylinder 42 and a cleaning component 43. The mounting plate 41 is installed in the material distribution bin 2. The filter screen cylinder 42 is a filter screen in the shape of a surrounding cylinder with both ends sealed. The filter screen cylinder 42 is placed at the suction port 33 and is axially rotatably installed on the mounting plate 41. The filter screen cylinder 42 can prevent sharp crushed stone slag from being absorbed into the dust suction bin 3 and damaging the internal instruments. The cleaning component 43 is installed on the mounting plate 41 and is in contact with the surface of the filter screen cylinder 42. The cleaning component 43 can scrape off large particles such as mud blocks attached to the surface of the filter screen cylinder 42 and maintain the filtering effect of the filter screen cylinder 42.

[0028] The screening mechanism 5 includes a screening plate 51 and a driving component 52. The screening plate 51 is located between the discharge port 12 and the fine material hopper 21, and one end thereof facing the block material hopper 22 is inclined downward. When the crushed stones fall out from the discharge port 12, they will first fall onto the screening plate 51. The stones collide with the screening plate 51, prompting the fine sand or loose small stone particles on the surface of the stones to separate from them and fall into the fine material hopper 21 through the pores of the screening plate 51. The crushed stones will roll along the slope of the screening plate 51 and fall into the adjacent block material hopper 22, realizing the separation of the stones from the fine sand and stone particles. The driving component 52 can drive the filter screen cylinder 42 to rotate when the stones fall onto the screening plate 51.

[0029] The present invention utilizes the natural fall of the crushed stones to collide with the screening plate 51, prompting the fine sand or loose small stone particles on the surface of the stone material to separate from the stones. The fine sand and stone particles that are prone to dust generation problems are separately contained in the fine material hopper 21 for subsequent treatment, and the dust generation factors in the block material hopper 22 are significantly reduced, which is beneficial to reducing the dust generated when the stones are poured out and improving the effective load-bearing capacity of the block material hopper 22 for crushed stones.

[0030] Preferably, the screening plate 51 includes a frame body 511 and screening rods 512. Multiple screening rods 512 are laid flat in the frame body 511 at intervals. The gap between adjacent two screening rods 512 allows fine sand and stone particles to pass through, and each screening rod 512 is parallel to the inclined direction of the screening plate 51, so that the crushed stones can be guided by the screening rods 512 to roll into the adjacent block material hopper 22 after falling onto the screening plate 51.

[0031] In one embodiment, the driving assembly 52 includes a rotating plate 521, a pawl 522, a ratchet gear 523 and a rebound structure, the two ratchet gears 523 are coaxially mounted on the two ends of the filter cylinder 42, the two rotating plates 521 are respectively mounted on both sides of the end of the screen disc 51 away from the block hopper 22 and are rotatably connected to the inner walls of both sides of the distribution bin 2, the screen cylinder 42 is located between the two rotating plates 521, and the rotating shaft of the rotating plate 521 is colinear with the rotating shaft of the screen cylinder 42, a first driving rod 524 is eccentrically connected between the two rotating plates 521, and a ratchet pawl 522 is rotatably mounted on the outer side of each ratchet gear 523 on the first driving rod 524, a torsion spring (not shown) is connected between the first driving rod 524 and the ratchet pawl 522 to provide an elastic force to abut the ratchet pawl 522 against the tooth surface of the ratchet gear 523, and the rebound structure can provide an elastic force to keep the screen disc 51 between the discharge port 12 and the fine hopper 21. The gravity of the gravel falling onto the sieve plate 51 will be converted into a thrust on the sieve plate 51, pushing the sieve plate 51 to swing downward, so that the first driving rod 524 will rotate around the rotating shaft of the rotating plate 521, and then the pawl 522 can push the ratchet gear 523 to rotate, and then push the filter drum 42 to rotate, and the rebound structure will continuously apply elastic force to reset the sieve plate 51, so that the pawl 522 can retreat along the tooth surface of the ratchet gear 523, and the ratchet gear 523 will not retreat, so that the sieve plate 51 will continue to swing under the shock of the gravel while the filter drum 42 maintains unidirectional rotation, and when the filter drum 42 rotates, the attachments on its surface will be scraped off by the cleaning component 43, and at the same time, the subsequent part of the filter drum 42 that has been cleaned will also rotate to the front of the absorption port 33, continuously cleaning and updating the surface of the filter drum 42 to maintain the filtering effect of the filter drum 42.

[0032] Specifically, the rebound structure includes a support rod 525 and a first elastic member 526, the support rod 525 is installed below the screening plate 51, and the first elastic member 526 is connected between the support rod 525 and the screening plate 51. Preferably, the support rod 525 is located below one end of the screening plate 51 close to the block hopper 22, so that the rebound structure avoids falling fine sand and stone particles.

[0033] like Figure 3 , Figure 6 and Figure 7As shown, in one embodiment, the cleaning component 43 includes two slider seats 431. On the mounting plate 41, two chute grooves 411 are respectively formed on the same side of the filter screen cylinder 42. The two chute grooves 411 are symmetrically formed at both ends on the same side of the filter screen cylinder 42. The two slider seats 431 are slidably mounted in the corresponding chute grooves 411 along the axial direction of the filter screen cylinder 42. A second elastic member 432 is connected between the slider seat 431 and the corresponding chute groove 411 to provide an elastic force for bringing the two slider seats 431 closer to each other. A cleaning brush 433 that abuts against the surface of the filter screen cylinder 42 is provided on the slider seat 431. A second driving rod 434 is connected between the two rotating plates 521. A pointed cone block 435 is provided on the second driving rod 434. And abutting blocks 436 are respectively provided on both sides of the moving path of the pointed cone block 435 on the two slider seats 431. When the screening tray 51 continuously swings under the impact of the crushed stones, the pointed cone block 435 will also repeatedly engage and disengage between the two abutting blocks 436, so that when the filter screen cylinder 42 is driven to rotate by the pawl 522 and the ratchet gear 523, the two slider seats 431 can also repeatedly move back and forth along the axial direction of the filter screen cylinder 42 for scraping, improving the cleaning effect on the surface of the filter screen cylinder 42.

[0034] Preferably, the heights of the two slider seats 431 are different, so that the moving paths of the two cleaning brushes 433 do not overlap, and the ends of the two cleaning brushes 433 close to each other both extend beyond each other, which is beneficial to expanding the cleaning range of the cleaning brushes 433, improving the cleaning effect, and eliminating the cleaning dead angle between the two cleaning brushes 433.

[0035] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments of equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A crushing device for mine stone materials, characterized in that, Comprising: A crusher body having a feed inlet at its top and a discharge outlet at its bottom; A material distribution bin installed at the bottom of the crusher body. Inside the material distribution bin, a fine material hopper is arranged below the discharge outlet, and a lump material hopper is arranged beside the fine material hopper; A dust suction bin on which a suction pump and a dust suction pipe are respectively installed. The distal end of the dust suction pipe is provided with a suction port, and the suction port is located on one side below the discharge outlet; A filtering mechanism including a mounting plate, a filter screen cylinder and a cleaning assembly. The mounting plate is installed inside the material distribution bin. The filter screen cylinder is blocked at the suction port and is axially rotatably installed on the mounting plate. The cleaning assembly is installed on the mounting plate and abuts against the surface of the filter screen cylinder; A screening mechanism including a screening plate and a driving assembly. The screening plate is located between the discharge outlet and the fine material hopper, and one end thereof facing the lump material hopper is inclined downward. The driving assembly includes a rotating plate, a ratchet pawl, a ratchet gear and a spring-back structure. The two ratchet gears are respectively coaxially installed at both ends of the filter screen cylinder. The two rotating plates are respectively installed on both sides of the end of the screening plate away from the lump material hopper and are rotatably connected to the inner walls of both sides of the material distribution bin. A first driving rod is eccentrically connected between the two rotating plates. Ratchet pawls are respectively rotatably installed on the outside of each ratchet gear on the first driving rod, and torsion springs are connected between the ratchet pawls and the first driving rod. The spring-back structure can provide an elastic force to keep the screening plate between the discharge outlet and the fine material hopper.

2. The mine stone crushing device according to claim 1, wherein the spring-back structure includes a support rod and a first elastic member. The support rod is installed below the screening plate, and the first elastic member is connected between the support rod and the screening plate.

3. The mine stone crushing device according to claim 2, wherein the support rod is located below the end of the screening plate close to the lump material hopper.

4. The mine stone crushing device according to claim 1, wherein the cleaning assembly includes two slider seats. Two sliding grooves are respectively opened on the same side of the filter screen cylinder on the mounting plate. The two slider seats are both slidably installed in the corresponding sliding grooves along the axial direction of the filter screen cylinder, and second elastic members are connected between the two slider seats and the corresponding sliding grooves to provide an elastic force to move the two slider seats closer to each other. Cleaning brushes abutting against the surface of the filter screen cylinder are arranged on the slider seats. A second driving rod is connected between the two rotating plates. A pointed cone block is arranged on the second driving rod, and abutting blocks are respectively arranged on both sides of the moving path of the pointed cone block on the two slider seats.

5. The mine stone crushing device according to claim 4, wherein the moving paths of the two cleaning brushes do not coincide, and the ends of the two cleaning brushes close to each other both extend beyond each other.

6. The mine stone crushing device according to claim 1, wherein the screening plate includes a frame body and screening rods. A plurality of the screening rods are laid flat at intervals inside the frame body, and each of the screening rods is parallel to the inclined direction of the screening plate.

7. The mine stone crushing device according to claim 1, wherein a covering plate is arranged outside the suction port, and the covering plate is placed against the surface of the filter screen cylinder.

8. The mine stone crushing device according to claim 1, wherein a branch pipe is connected to the dust suction pipe, and the distal end of the branch pipe extends above the feed inlet.

9. The crushing device for mine stone materials according to claim 1, wherein the fine material hopper and the block material hopper are respectively slidably installed at the bottom of the material distribution bin, and two notches for the fine material hopper and the block material hopper to move in and out are formed on one side of the material distribution bin.

Images