Anti-blocking spherical graphite grader

Abstract

The utility model relates to an anti-blocking spherical graphite grader, and belongs to the field of graphite screening, the anti-blocking spherical graphite grader comprises a grader body, a crushing device is arranged at the position of a feeding port of the grader, and the crushing device comprises a shell with a discharging port formed in the lower end and a cylindrical crushing bin with a feeding hopper fixedly connected to the upper side; the crushing bin is horizontally arranged; a plurality of smashing rollers are arranged in the smashing bin in the direction parallel to the axis. A driving assembly is arranged at one end of the crushing bin and comprises a first motor, a sun gear driven by the first motor to rotate, a plurality of planetary gears and a gear ring; each crushing roller is coaxially and fixedly connected to the planetary gear or the sun gear, and the driving assembly drives the crushing rollers to rotate; a first screen is embedded in the peripheral surface of the crushing bin; and a second screen is arranged at the position, corresponding to the lower portion of the first screen, in the shell. The grading machine has the effect of preventing the grading efficiency of the grading machine from being influenced due to blockage of the grading wheel caused by overlarge particles.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of graphite screening, in particular to a ball graphite classifier capable of preventing blockage. BACKGROUND

[0002] At present, a turbine classifier is commonly used to classify ball graphite, which comprises a classification wheel driven by a driving device, a feeding port, a classification cavity, an air inlet and an outlet for coarse and fine powders. The classification wheel is composed of a dispersion disc and a material blocking ring arranged on the same axis.

[0003] The powder of ball graphite is input from the feeding port and falls onto the dispersion disc. After being thrown out by the dispersion disc, the powder hits the material blocking ring and then falls into the classification area. The airflow enters the classifier tangentially from the air inlet. Due to the high-speed rotation of the impeller, a negative pressure area is formed at the lower part, so that the airflow has a split speed in the axial and circumferential directions. The powder is affected by the centripetal force, centrifugal force and gravity, and the coarse and fine particles in the powder are classified. The fine particles receive a greater airflow drag force and are discharged to the dust collector with the airflow. The coarse particles are affected by their own gravity and sink to the bottom to be discharged from the coarse powder outlet.

[0004] For the related technologies in the above, the blade gap of the classification wheel, as the core component of the turbine classifier, is the key area for material classification. When the material contains relatively large particles, these materials are easy to accumulate on the blades of the classification wheel, thereby causing blockage. The blocked classification wheel will affect the classification effect and the normal operation of the equipment. CONTENT OF THE INVENTION

[0005] In order to prevent the classification wheel from being blocked due to too large particles and affect the classification efficiency of the classifier, the present application provides a ball graphite classifier capable of preventing blockage.

[0006] The ball graphite classifier capable of preventing blockage provided by the present application adopts the following technical solution:

[0007] The application discloses an anti-blocking spherical graphite classifier, which comprises a classifier body, a crushing device is arranged at the position of the feeding port of the classifier, the crushing device comprises a shell and a cylindrical crushing bin, the lower end of the shell is provided with a discharging port and is communicated with the feeding port of the classifier, the axis of the crushing bin is horizontally arranged, a feeding hopper is fixedly arranged on the upper side of the crushing bin, the feeding hopper is communicated with the crushing bin and penetrates through the shell and is communicated with the outside, a plurality of crushing rollers are arranged in the crushing bin and are parallel to the axis direction, a driving assembly is arranged at one end of the crushing bin, the driving assembly comprises a first motor, a sun gear driven to rotate by the first motor, a plurality of planetary gears and a gear ring, each crushing roller is coaxially fixed to the planetary gear or the sun gear, and the driving assembly drives all the crushing rollers to rotate in cooperation, a through hole is formed in the circumferential surface of the crushing bin, a first screen is fixedly arranged at the position corresponding to the through hole of the crushing bin, a second screen is arranged in the shell, the second screen is located on the lower side of the first screen, and a discharging port is formed in the shell and corresponds to one end of the second screen in the length direction.

[0008] By adopting the above technical scheme, the crushing device is arranged at the position of the feeding port of the classifier, which can effectively crush large graphite particles, so that the graphite particles can more easily pass through the screen of the classifier, and the classification efficiency is improved. The crushing device adopts the structure of the planetary gear and the sun gear, a plurality of crushing rollers are driven to rotate by the driving motor, and the uniform crushing of the graphite particles is realized. The first screen and the second screen are arranged in the crushing bin and the shell respectively, and graphite particles of different sizes can be further screened out, so that the screening effect is ensured and the screening purpose is realized.

[0009] Optionally, a vibrating assembly is arranged in the shell and corresponds to the position of the second screen, the vibrating assembly comprises a second motor, a cam and a spring, the cam and the spring are arranged at two ends of the second screen respectively, the spring is arranged close to the discharging port, the two ends of the spring are fixedly connected to the second screen and the inner wall of the shell respectively, the spring provides a force to the second screen away from the inner wall of the shell, the second motor drives the cam to rotate, the circumferential surface of the cam abuts against the second screen, and the second screen swings along the length direction when the cam rotates.

[0010] By adopting the above technical scheme, the vibrating assembly is arranged below the second screen, the second motor drives the cam to rotate, and the second screen swings along the length direction, which is helpful for preventing the graphite particles from being blocked on the second screen and improving the screening effect.

[0011] Optionally, the second screen is arranged in an inclined mode along the length direction, and the end of the second screen close to the discharging port is lower than the end of the second screen away from the discharging port.

[0012] By adopting the technical scheme, the second screen is arranged in an inclined manner along the length direction, so that the material particles larger than the second screen can slide to the discharge port under the action of gravity.

[0013] Optionally, an extrusion rib is arranged on the upper surface of the circumferential surface of the inner wall of the crushing chamber, and an extrusion rib is also arranged on the circumferential surface of the crushing roller.

[0014] By adopting the technical scheme, the extrusion rib increases the contact area with the material, enhances the crushing effect, and has a simple structure and is convenient for production and maintenance.

[0015] Optionally, a sealing disc is embedded at one end of the crushing chamber close to the driving assembly, the sealing disc rotates in the crushing chamber, a sealing ring is arranged at the connection position of the sealing disc and the crushing chamber, and the rotating shaft of the crushing roller penetrates the sealing disc.

[0016] By adopting the technical scheme, the sealing disc is used in cooperation with the sealing ring, which effectively prevents the material from leaking out of the gap between the driving assembly and the crushing chamber, and also avoids the material from entering the driving assembly to cause wear and corrosion of the driving assembly, thereby prolonging the service life of the equipment.

[0017] Optionally, a cleaning assembly is further arranged in the housing, the cleaning assembly comprises a cleaning roller and a gas cylinder, the circumferential surface of the cleaning roller abuts against the lower side of the first screen, and the gas cylinder drives the cleaning roller to reciprocate along the length direction of the first screen.

[0018] By adopting the technical scheme, the arrangement of the cleaning assembly can effectively prevent the first screen from being blocked due to the accumulation of graphite particles or dust. The rolling friction of the cleaning roller can timely remove the accumulated substances on the first screen, so that the first screen is kept unblocked.

[0019] Optionally, cleaning needles are arranged on the circumferential surface of the cleaning roller, and the cleaning needles abut against the meshes of the first screen when the cleaning roller rotates.

[0020] By adopting the technical scheme, the cleaning needles can deeply clean the meshes of the first screen, reduce the blockage and wear of the first screen, thereby prolonging the service life of the screen and reducing the maintenance cost of the equipment.

[0021] Optionally, the feeding hopper comprises a vertical section and an inclined section connected in sequence from top to bottom, the inclined section is arranged in an inclined manner, and the lower end of the inclined section is fixedly connected to the crushing chamber.

[0022] By adopting the technical scheme, the vertical section and the inclined section cooperate to play a good guiding and anti-blocking role, and also help to reduce the splashing of dust, protect the working environment and the health of the operator, and improve the operation efficiency and stability of the classifier. This design is simple and practical, and is easy to maintain.

[0023] To sum up, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The classifier is provided with a crushing device at the inlet position, which can effectively crush larger graphite particles, making it easier to pass through the screen of the classifier, thereby improving the classification efficiency. The crushing device adopts a planetary gear and sun gear structure, which rotates multiple crushing rollers driven by a driving motor, achieving uniform crushing of graphite particles, reducing the occurrence of blockage problems, and improving the operation efficiency and stability of the equipment;

[0025] 2. The crushing chamber and the housing are respectively provided with a first screen and a second screen, which can further screen out graphite particles of different sizes, ensuring the screening effect while achieving the purpose of screening. A vibration assembly is arranged below the second screen, which is driven by a second motor to rotate the cam, causing the second screen to oscillate along the length direction. This helps to prevent graphite particles from blocking on the second screen, improving the screening effect;

[0026] 3. The sealing disc is used in combination with the sealing ring, effectively preventing material from leaking out of the gap between the driving assembly and the crushing chamber, and also preventing material from entering the driving assembly, causing wear and corrosion of the driving assembly, thereby prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a ball-shaped graphite classifier with anti-blocking function according to an embodiment of the present application;

[0028] Figure 2 is a structural schematic diagram of a prominent crushing device of a ball-shaped graphite classifier with anti-blocking function according to an embodiment of the present application;

[0029] Figure 3 is a sectional view of a prominent crushing device of a ball-shaped graphite classifier with anti-blocking function according to an embodiment of the present application;

[0030] Figure 4 is a sectional view of a prominent sealing cover of a ball-shaped graphite classifier with anti-blocking function according to an embodiment of the present application.

[0031] Explanation of reference signs: 1, classifier body; 11, inlet; 2, crushing device; 21, housing; 211, discharge port; 22, crushing chamber; 221, extrusion ribs; 23, crushing roller; 24, first screen; 25, second screen; 26, feed hopper; 3, driving assembly; 31, first motor; 32, sun gear; 33, planetary gear; 34, gear ring; 4, cleaning assembly; 41, cleaning roller; 411, cleaning needle; 42, air cylinder; 43, bracket; 5, vibration assembly; 51, second motor; 52, cam; 53, spring; 6, sealing disc; 61, sealing ring. DETAILED DESCRIPTION

[0032] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, explain the advantages of the application. Figures 1-4 The application is explained in further detail, and by way of non-limiting examples, with reference to the accompanying drawings.

[0033] In the present application, unless specifically defined otherwise, the terms "mounting", "connection", "connecting", "fixed", and the like should be construed in a broad sense, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection, or communication; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0035] Embodiments of the present application disclose a ball-shaped graphite classifier capable of preventing blockage. With reference to the drawings Figure 1 A ball-shaped graphite classifier capable of preventing blockage includes a classifier body 1. A crushing device 2 is arranged at a position of a feed inlet 11 of the classifier, and the crushing device 2 pre-crushes and screens the graphite material entering the ball-shaped graphite classifier, which can ensure that the material is of moderate size before entering the classifier, and is not prone to blockage.

[0036] Reference Figure 2 and 3The crushing device 2 comprises a shell 21 and a crushing bin 22. The shell 21 is fixed to the corresponding feed inlet 11 of the classifier, the upper end of the shell 21 is closed, and the lower end of the shell 21 is provided with a discharge port and is communicated with the feed inlet 11 of the classifier, and the material after the crushing and screening falls into the classifier from the discharge port. The crushing bin 22 is fixed to the upper side inside the shell 21, the crushing bin 22 is in a cylindrical shape, and the axial direction of the crushing bin 22 is horizontally arranged along the width direction of the shell 21. The lower hopper is fixed to the upper end of the shell 21, and the lower hopper comprises a vertical section and an inclined section arranged in sequence from top to bottom. The vertical section of the lower hopper is vertically arranged, and the inclined section of the lower hopper is inclinedly arranged, the inclined section penetrates through the shell 21 and the crushing bin 22 downward and is communicated with the inside of the crushing bin 22, the material to be crushed enters the crushing bin 22 through the lower hopper, and the combination of the inclined section and the vertical section enables the material to be preliminarily guided and arranged before entering the crushing bin 22, thereby reducing the blocking phenomenon of the material at the inlet of the crushing bin 22, and the design of the inclined section enables the material to slide along the inclined section instead of bouncing or splashing inside the inclined section, thereby effectively reducing the generation and splashing of dust and protecting the working environment and the health of the operator.

[0037] Reference Figure 2 and 3 The crushing bin 22 is provided with a driving assembly 3 at one end in the axial direction, the driving assembly 3 comprises a first motor 31, a sun gear 32, three planetary gears 33 and a ring gear 34. The sun gear 32, the planetary gears 33 and the ring gear 34 are in the same vertical plane. The ring gear 34 is coaxially fixed to one end of the outer side, and the sun gear 32 is coaxially arranged in the middle of the ring gear 34. The three planetary gears 33 are uniformly distributed between the ring gear 34 and the sun gear 32, and the three planetary gears 33 are simultaneously meshed with the ring gear 34 and the sun gear 32. The first motor 31 is fixed to the shell 21 at the outer side of one end of the crushing bin 22, the output shaft of the first motor 31 faces the crushing bin 22 and is coaxially fixed to the sun gear 32, the first motor 31 drives the sun gear 32 to rotate, and when the sun gear 32 rotates, the three planetary gears 33 meshed with the sun gear 32 rotate around the sun gear 32. Four crushing rollers 23 are arranged in parallel in the crushing bin 22 in the axial direction, and the crushing rollers 23 are coaxially fixed to the sun gear 32 and the planetary gears 33 away from the first motor 31 at one end, and the four crushing rollers 23 rotate under the drive of the driving assembly 3. The crushing teeth are fixed on the outer surface of each crushing roller 23 and the inner wall of the crushing bin, and the crushing teeth and the crushing rollers 23 cooperate with each other to increase the area of the material entering the crushing bin 22 for extrusion, thereby improving the crushing effect.

[0038] Reference Figure 2 and 3, a through hole is formed on the circumferential surface of the lower side of the crushing bin 22, and the through hole is formed along the axis direction of the crushing bin 22. The first screen 24 is fixedly arranged at the position corresponding to the through hole of the crushing bin 22, and the screen hole area of the first screen 24 is equal to or smaller than the blade gap of the classification wheel in the classifier. The material is crushed to be smaller than the size of the screen hole in the first screen 24, and then separated from the crushing cavity at the position of the first screen 24.

[0039] Reference Figure 3 , a second screen 25 is further arranged below the first screen 24 in the shell 21, the second screen 25 completely covers the horizontal section of the shell 21, and the screen hole area of the second screen 25 is smaller than the blade gap of the classification wheel in the classifier. The material screened out from the first screen 24 falls on the second screen 25 for secondary screening. A vibration assembly 5 is further arranged at the position corresponding to the second screen 25 on the inner wall of the shell 21. The vibration assembly 5 includes a second motor 51, a cam 52 and a spring 53. The cam 52 and the spring 53 are arranged on the two sides of the second screen 25 along the length direction. The second motor 51 is fixedly connected to the shell 21 at the position corresponding to the cam 52, the output end of the second motor 51 is fixedly connected to the rotating shaft of the cam 52 to drive the cam 52 to rotate, and the circumferential surface of the cam 52 abuts against one end of the second screen 25 close to the cam 52. The spring 53 is arranged along the length direction of the second screen 25, one end of the spring 53 is fixedly connected to the inner wall of the shell 21, and the other end of the spring 53 is fixedly connected to the other end of the second screen 25 away from the cam 52. During the rotation of the cam 52, when the abutting surface of the second screen 25 and the cam 52 is away from the rotating shaft of the cam 52, the second screen 25 moves towards the spring 53 and compresses the spring 53; when the abutting surface of the second screen 25 and the cam 52 is close to the rotating shaft of the cam 52, the spring 53 provides a force to the second screen 25 in the direction close to the cam 52, so that the second screen 25 moves in the direction close to the cam 52, thereby ensuring that the second screen 25 continuously abuts against the surface of the cam 52. The existence of the spring 53 not only provides support for the second screen 25, but also enhances the amplitude and frequency of vibration to a certain extent. Through the vibration assembly 5, the second screen 25 reciprocates along the length direction, so that the material on the second screen 25 can be better dispersed and fallen, thereby effectively preventing the clogging of the screen. This not only improves the operation efficiency of the classifier, but also reduces the equipment failure caused by the clogging of the screen.

[0040] Reference Figure 2 and 3 , the second screen 25 is arranged in an inclined state, and one end of the second screen 25 close to the cam 52 is higher than the other end close to the spring 53. A discharge port 211 is formed on the shell 21 at the position corresponding to the other end of the second screen 25 close to the spring 53, and the discharge port 211 is communicated with the upper side of the second screen 25 and the outside. The inclined arrangement of the second screen 25 and the discharge port 211 can make the material that cannot pass through the second screen 25 leave the shell 21 from the position of the discharge port 211 under the action of gravity, thereby facilitating the outflow of the material,

[0041] Reference Figure 2 And 3 , the shell 21 is provided with a cleaning assembly 4 corresponding to the position of the first screen 24, the cleaning assembly will include two cleaning rollers 41 and a pneumatic cylinder 42, the circumferential surface of the two cleaning rollers 41 abuts the lower side of the first screen, and the axis of the two cleaning rollers 41 is parallel to the axis of the crushing chamber 22. The two cleaning rollers 41 are rotatably connected with a support 43 at both ends in the axial direction, and the support 43 fixes the relative position of the two cleaning rollers 41. A pneumatic cylinder 42 is horizontally fixed on the shell 21 corresponding to the position of the cleaning roller 41, and the pneumatic cylinder 42 is perpendicular to the axis of the cleaning roller 41. The output end of the pneumatic cylinder 42 is rotatably connected to the support 43, and the pneumatic cylinder 42 drives the two cleaning rollers 41 to reciprocate along the length direction of the first screen 24 through the support 43, thereby cleaning the first screen 24. The cleaning roller 41 is fixedly connected with a cleaning needle 411, and the cleaning needle 411 is matched with the mesh of the first screen 24. When the cleaning roller 41 rotates and abuts the first screen 24, the cleaning needle 411 can penetrate into the mesh of the screen to remove graphite particles or dust accumulated in the mesh.

[0042] Reference Figure 4 To prevent the material powder in the crushing chamber 22 from entering the driving assembly 3 and causing wear and corrosion of the driving assembly 3, a sealing disc 6 is embedded at one end of the crushing chamber 22 close to the driving assembly 3. The sealing disc 6 is coaxial with the sun gear 32 and independently rotates in the crushing chamber 22. A sealing ring 61 is sleeved on the connection position between the sealing disc 6 and the crushing chamber 22, further enhancing the sealing. The rotating shafts of all the crushing rollers 23 pass through the sealing disc 6, and the rotation of the crushing rollers 23 fixed to the planetary gear 33 drives the sealing disc 6 to rotate around the axis. The sealing disc 6 is used in cooperation with the sealing ring 61, effectively preventing the material from leaking out of the gap between the driving assembly 3 and the crushing chamber 22, thereby prolonging the service life of the equipment.

[0043] The implementation principle of the anti-blocking spherical graphite classifier is as follows: the spherical graphite material to be classified enters the classifier through the feeding hopper. The material entering the crushing chamber 22 is crushed under the combined extrusion of the crushing rollers 23 and the crushing chamber 22. The crushed material moves downward under the action of gravity and is preliminarily screened through the first screen 24. The material with a size meeting the requirements falls from the first screen 24 to the second screen 25 for secondary screening. The material with a size not meeting the requirements is continuously crushed in the crushing chamber 22 until the size is qualified. The mesh size of the second screen 25 is smaller than the blade gap of the classification wheel in the classifier, so that the material meeting the requirements can be further screened out.

[0044] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A clog-resistant spheroidal graphite classifier comprising a classifier body (1), characterized in that: The feeding port (11) of the classifier is provided with a crushing device (2), the crushing device (2) comprises a shell (21) and a cylindrical crushing bin (22); the lower end of the shell (21) is provided with a discharge port and is communicated with the feeding port (11) of the classifier; the axis of the crushing bin (22) is horizontally arranged, the upper side of the crushing bin (22) is fixedly provided with a feeding hopper (26), the feeding hopper (26) is communicated with the crushing bin (22) and penetrates the shell (21) to be communicated with the outside; a plurality of crushing rollers (23) are arranged in the crushing bin (22) and are parallel to the axis direction; one end of the crushing bin (22) is provided with a driving assembly (3), the driving assembly (3) comprises a first motor (31), a sun gear (32) driven to rotate by the first motor (31), a plurality of planetary gears (33) and a ring gear (34); each crushing roller (23) is coaxially fixed to the planetary gear (33) or the sun gear (32), and the driving assembly (3) drives all the crushing rollers (23) to rotate; a through hole is formed in the peripheral surface of the crushing bin (22), and a first screen (24) is fixedly arranged at the position corresponding to the through hole of the crushing bin (22); a second screen (25) is arranged in the shell (21), the second screen (25) is located below the first screen (24), and a discharge port (211) is formed in the shell (21) at one end of the length direction of the second screen (25).

2. A ball-type graphite classifier according to claim 1, characterized in that: A vibration assembly (5) is arranged in the shell (21) at the position corresponding to the second screen (25), the vibration assembly (5) comprises a second motor (51), a cam (52) and a spring (53); the cam (52) and the spring (53) are arranged at two ends of the second screen (25) respectively, the spring (53) is arranged close to the discharge port (211), and the two ends of the spring (53) are fixedly connected to the second screen (25) and the inner wall of the shell (21) respectively, so that the spring (53) applies a force to the second screen (25) away from the inner wall of the shell (21); the second motor (51) drives the cam (52) to rotate, the peripheral surface of the cam (52) abuts against the second screen (25), and when the cam (52) rotates, the second screen (25) swings along the length direction.

3. A ball-type graphite classifier according to claim 1, wherein: The second screen (25) is arranged in an inclined manner along the length direction, and the end of the second screen (25) close to the discharge port (211) is lower than the end away from the discharge port (211).

4. A ball-type graphite classifier according to claim 1, wherein: The inner wall of the crushing bin (22) is provided with extrusion ribs (221) on the surface, and the crushing rollers (23) are also provided with extrusion ribs (221) on the peripheral surface.

5. A ball-type graphite classifier according to claim 1, wherein: A sealing disc (6) is embedded at one end of the crushing bin (22) close to the driving assembly (3), the sealing disc (6) rotates in the crushing bin (22), and a sealing ring (61) is arranged at the connecting position of the sealing disc (6) and the crushing bin (22); the rotating shaft of the crushing roller (23) penetrates the sealing disc (6).

6. A ball-type graphite classifier according to claim 1, wherein: The shell (21) is internally provided with a cleaning assembly (4), which comprises a cleaning roller (41) and a pneumatic cylinder (42), the peripheral surface of the cleaning roller (41) abuts against the lower side of the first screen (24), and the pneumatic cylinder (42) drives the cleaning roller (41) to reciprocate along the length direction of the first screen (24).

7. A ball-type graphite classifier according to claim 6, characterized in that: The peripheral surface of the cleaning roller (41) is provided with cleaning needles (411), and when the cleaning roller (41) rotates, the cleaning needles (411) abut against the meshes of the first screen (24).

8. A ball-type graphite classifier according to claim 1, wherein: The feeding hopper (26) comprises a vertical section and an inclined section connected in sequence from top to bottom, the inclined section is arranged in an inclined manner, and the lower end of the inclined section is fixedly connected to the crushing bin (22).

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