CN114653573A

CN114653573A - Multi-surface turnover screen device

Info

Publication number: CN114653573A
Application number: CN202210299377.6A
Authority: CN
Inventors: 刘栋华; 成汉文; 戚光远; 刘文春; 宁洋; 刘玉普; 刘春林; 刘春生; 张洁
Original assignee: Jilin Haiyicheng Numerical Control Equipment Technology Co ltd; LIAOYUAN RUIYI GRAIN MACHINERY MANUFACTURING CO LTD
Current assignee: Jilin Haiyicheng Numerical Control Equipment Technology Co ltd; LIAOYUAN RUIYI GRAIN MACHINERY MANUFACTURING CO LTD
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-06-24

Abstract

The invention discloses a multi-face overturning screen device, which comprises a frame, wherein the frame is provided with a main shaft capable of rotating around the axis of the frame and a motor for driving the main shaft to rotate, and is characterized in that: the multi-scale screen is characterized in that the spindle is uniformly provided with a plurality of indexing hubs along the axial direction, a plurality of indexing threaded holes are uniformly distributed in the circumferential direction of the indexing hubs, a plurality of indexing screws are mounted on the indexing hubs through the indexing threaded holes, screen lattices are fixedly mounted at the outer ends of the indexing screws, the screen lattices connected with the indexing hubs form a regular multi-surface cylindrical screen, all the regular multi-surface cylindrical screens form a rotary screen body, and the two ends of the rotary screen body are respectively provided with a feeding striker plate and a discharging striker plate. The turnover screen device can realize accurate grading screening of graphite, and is convenient and easy to operate for maintaining and replacing parts and the like.

Description

Multi-surface turnover screen device

Technical Field

The invention belongs to the technical field of material sorting devices, and particularly relates to a multi-face overturning screen device.

Background

The turnover screen is a device for screening materials through turnover action. Currently, the inverted screens comprise a cylindrical screen rotatable about and coaxial with a main shaft, the cylindrical screen being directly connected to the main shaft. The screen cloth of this kind of upset sieve is changed inconveniently to take graphite production and processing as an example, and the upset sieve of traditional structure can't realize the accurate sieve powder of graphite and grade.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a multi-surface overturning screen device which has the advantages of convenient and simple multi-surface conversion of a screen body, good screening and grading effects and simple equipment maintenance.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a multiaspect upset sieve device which characterized in that: including the frame, the rack-mount can be around self axis pivoted main shaft and drive main shaft pivoted motor, its characterized in that: the multi-screen rotary screen is characterized in that a plurality of indexing hubs are uniformly arranged on the main shaft along the axial direction, a plurality of indexing threaded holes are uniformly distributed in the circumferential direction of each indexing hub, a plurality of indexing screws are arranged on each indexing hub through each indexing threaded hole, screen grids are fixedly arranged at the outer end parts of the indexing screws, the screen grids connected with the same indexing hubs form a regular multi-surface cylindrical screen, all the regular multi-surface cylindrical screens form a rotary screen body, and a feeding baffle plate and a discharging baffle plate are respectively arranged at the two end parts of the rotary screen body.

Preferably, a housing is arranged on the outer side of the rotary screen body, and a discharge hole is formed in the lower portion of the housing.

Preferably, the indexing hub is mounted on the spindle by a flat key.

Preferably, the outer end of the indexing screw fixes a support body having a right-angled support slot combined with the screen.

Preferably, the sieve lattice is provided with a buffer part, a sieve face part and a discharging part in sequence along the axial direction of the main shaft.

Preferably, a sealing rubber pad is arranged between the groove surface of the right-angle support groove opening of the support body and the end part of the sieve lattice.

Compared with the prior art, the invention has the beneficial effects that:

the simple dismouting of this rotary screen body accessible part of upset sieve device realizes the multiaspect conversion, has extensive practical effect to the scale of graphite production. And can realize the accurate grading screening of graphite.

The detachable installation mode of each part in the device is very meaningful for prolonging the service life of the whole machine, and has excellent convenience and operability for maintaining and replacing parts and the like. The overturning screen device has ideal effect through the experiments of a plurality of manufacturers.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a cross-sectional view of an indexing hub according to the present invention.

In the figure: 1. a frame; 2. a main shaft; 3. indexing the hub; 4. indexing the screw rod; 5. screening grids; 6. a feeding striker plate; 7. a discharging striker plate; 8. a support body; 9. a housing; 10. and a speed reducer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: a multi-surface turnover screen device comprises a frame 1, wherein the frame 1 is provided with a main shaft 2 which can rotate around the axis of the frame 1 and a motor which drives the main shaft to rotate. Specifically, the frame 1 comprises a base, and a two-shaft bracket for mounting the main shaft 2 and a support for mounting the motor are fixed on the upper portion of the base.

The main shaft 2 is uniformly provided with a plurality of indexing hubs 3 along the axial direction, a plurality of indexing threaded holes are uniformly distributed in the circumferential direction of the indexing hubs 3, and a plurality of indexing screws 4 are arranged on the indexing hubs 3 through the indexing threaded holes. The outer end part of the indexing screw rod 4 is fixedly provided with a sieve lattice 5, the sieve lattice 5 connected with the same indexing hub 3 forms a regular multi-surface cylindrical sieve, and all the regular multi-surface cylindrical sieves form a rotary sieve body. And the two ends of the rotary screen body are respectively provided with a feeding striker plate 6 and a discharging striker plate 7.

The main shaft 2 and the indexing hub 3 are machined in a machining workshop, and parts required to be assembled, such as a bearing, a bearing seat, an indexing screw rod 4 and the like, are prepared.

Firstly, the indexing hub 3 is arranged at a fixed mounting position on the main shaft 2, the main shaft 2 and the indexing hub 3 are mounted in a key fit mode, and then the indexing hub 3 is locked through a small round nut and a retaining washer. The hole sites of the indexing threaded holes of the indexing hub 3 are machined according to strict indexing and form a fixed angle with the key grooves of the main shaft 2, so that after the indexing hub 3 at different positions is provided with the indexing screws 4 in the axially corresponding indexing threaded holes, all the axially corresponding indexing screws 4 are in the same plane.

In this embodiment, four indexing wheel hubs 3 are installed on the main shaft 2, and eight indexing threaded holes are uniformly distributed in the circumferential direction of each indexing wheel hub 3 so as to realize eight-point support of the rotary screen body. The bearings are respectively arranged in the bearing positions at the two ends of the main shaft 2, then the two bearings are fixedly arranged in a bearing seat prepared in advance, and then the bearing seat is assembled. And then the mounted bearing seat and the main shaft 2 are placed on the shaft bracket. Thereafter, the index screws 4 are mounted to the index hub 3 through the index threaded holes, the mounting lengths of the index screws 4 in the index hub 3 are ensured to be equal during the mounting process, and lock nuts are fitted to the index screws 4 to lock the index screws 4.

Thirty-two indexing screws 4 are arranged on the four indexing hubs 3. After the adjustment and installation of the indexing screw rod 4 are finished, a supporting body 8 is installed at the outer end part of the indexing screw rod 4, and the supporting body 8 is provided with a right-angle supporting notch combined with the sieve lattice 5. The support body 8 is a structural member formed by welding profiled bars or angle steels, and the support body 8 is mainly used for installing and supporting the screen surface grids 5. And a sealing rubber pad is bonded on the groove surface of the right-angle support groove opening of the support body 8, after the sealing rubber pad is firmly bonded, the edge part of the sieve lattice 5 is placed on the sealing rubber pad, and the whole rotary sieve body is tightly pressed to complete the assembly of the whole rotary sieve body.

All the processing of the support body 8 is completed on a laser cutting machine, and the error generated on the cutting size can be controlled within 0.2 mm. The angle steel of the supporting body 8 is ideally selected from standard special-shaped angle steel purchased, and when bending forming parts are adopted, the bending angle, the straightness on the whole length and the planeness of a working supporting surface (a groove surface of a right-angle supporting groove opening) of the special-shaped angle steel need to be strictly controlled. The angle of the vertical edge of the special-shaped angle steel is 45 degrees, and the long edge of the special-shaped angle steel forms a fixed supporting surface of the sieve lattice. Wherein the vertical face angle of the special-shaped angle steel is 60 degrees, and the long side of the special-shaped angle steel forms a fixed supporting surface of a six-side screen grid. The support body 8 has a through hole into which the index screw 4 is inserted, and both ends are locked by nuts.

The two ends of the rotary screen body are respectively provided with a feeding section baffle 6 and a discharging section baffle 9, and the installation length of the indexing screw rod 4 and the equal distance of the octants are adjusted in the installation process. If the phenomenon of unevenness occurs, adjustment is needed until the octant is uniformly distributed. A cover 9 is arranged on the outer side of the rotary screen body, and the cover 9 is an upper shell and a lower shell which are combined through bolts. The lower part of the lower shell of the housing 9 is provided with a discharge hole, and a structure for controlling discharge can be arranged at the discharge hole. The housing 9 is fixed to the frame and has holes at both ends thereof through which the main shaft passes.

The motor is arranged on the support, the speed reducer 10 is also arranged on the support, the output shaft of the motor is in transmission connection with the speed reducer 10, and the output shaft of the speed reducer 10 is connected with the main shaft 2 through a half-gear coupling. The gear coupling is selected, the characteristic of the meshing clearance of the gear is fully utilized, and machining and manufacturing errors of related parts and bending deformation of the main shaft under the long-term use condition are compensated. The motor and the speed reducer 10 drive the main shaft to rotate around the central axis through a coupling, and the upper limit of the angular speed of the main shaft is 15 rpm. In the embodiment, the motor is a 5.5KW variable frequency motor, and the speed regulation range is 0-15 r/min. Multiple experiments prove that the rotation speed of the motor is suitable for 10 revolutions per minute or so for different materials with ideal effect of screening on the length of the screen surface of 2000 mm. Further experiments and observations were needed with longer screen runs.

The maximum screen surface condition and the maximum material flow torque of the device are about 2300NM, the maximum torque of the selected motor and the speed reducer is 3500NM in consideration of temperature and material deposition, and the device has sufficient saturation. The frequency modulation performance of the motor can meet the most reasonable rotating speed requirement under different screen surface conditions. The acceleration time from 0 to the maximum rotating speed is set to be 10 seconds when the motor is started, so that the motor is prevented from being overloaded in the starting process.

In this embodiment, eight graduation screw holes are evenly distributed in the circumferential direction of the graduation hub 3, so as to meet the structural requirements of the regular octahedral sieve. The indexing wheel hub with six indexing threaded holes uniformly distributed can be replaced according to requirements. The detachable structure is more beneficial to adjustment, replacement and the like of parts or maintenance, and compared with the traditional equipment of the type, the detachable structure is more perfect and the maintenance is simpler and more convenient. By replacing the parts, the conversion from the octahedral sieve to the hexahedral sieve can be flexibly completed, which is very significant when the sieve surface quantity needs to be replaced for different materials and yields in actual use. In the process of product experiments, the characteristic that the screen surface can be changed by the multi-surface overturning screen is approved by a plurality of experimental manufacturers.

Furthermore, the indexing hub 3 can axially process indexing threaded holes arranged in two circles, one circle is eight indexing threaded holes, the other circle is six indexing threaded holes, and the indexing screw rod can be replaced without disassembling the indexing hub. The empty indexing threaded hole can be plugged by a threaded plug.

The size requirement of the indexing hub 3 is strict, particularly, the axial angle error of each indexing threaded hole is controlled to be plus or minus 0.05mm, and the angle error of the central hole of the indexing hub 3 and the key groove of the spindle 2 is controlled to be within the range of plus or minus 0.05 mm. The above precision dimensions need a machining center to be completed.

In this embodiment, the material that the turnover screen device needs to sieve is the mixture of water and graphite granule, and such material characteristic determines that all spare parts that contact with the material must possess anticorrosive anti-oxidation function. The corrosion of the parts under the long-term use condition is avoided. For this reason, we use white steel pipes as the frame of the screen 5 in material selection, which has the following advantages compared with the use of the wooden screen frame of the original similar product:

1. the strength is high, the integral flatness is good, and the sieve lattice can not deform in a long-term use state;

2. the screen is firmly adhered, so that the replacement frequency of the screen is reduced;

3. the weight of the control frame of the screen grid is slightly higher than that of a wood screen grid, but is far lower than that of a solid metal frame.

From the comparison above, the use of the white steel lattice frame changes the texture of the device in both the stabilizing effect and the use effect.

The sieve lattice 5 is provided with a buffer part, a sieve face part and a discharging part in sequence along the axial direction of the main shaft. The effect of buffering portion makes the material that gets into in the device through the buffering, avoids the material directly to get into the sifter and causes the impact, reduces the life of screen cloth. The screen surface part is a working section of the screen grid 5, and materials are screened in the working section. Under normal use conditions, the working surface was glued to a 90 mesh white steel screen. The discharging part is an oversize material guiding-out section of the sieve grid 5, and the angle blades at the tail end of the discharging part are convenient for smooth outflow of oversize materials.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multiaspect upset sieve device which characterized in that: including frame (1), the rack-mount can be around self axis pivoted main shaft (2) and drive main shaft (2) pivoted motor, its characterized in that: the utility model discloses a multi-scale screen, including main shaft (2), main shaft, graduation wheel hub (3), graduation screw hole, outer tip fixed mounting sieve check (5) of graduation screw rod (4), main shaft (2) are along a plurality of graduation wheel hub (3) of axial evenly installed, a plurality of graduation screw hole of circumferencial direction equipartition of graduation wheel hub (3), graduation wheel hub (3) are through a plurality of graduation screw hole installation, outer tip fixed mounting sieve check (5) of graduation screw rod (4) are with same sieve check (5) that graduation wheel hub connects constitute just multiaspect cylindric sieve, and all just multiaspect cylindric sieves constitute the gyration screen frame, gyration screen frame both ends are equipped with feeding striker plate (6) and ejection of compact striker plate (7) respectively.

2. The multi-faced inverted screen apparatus of claim 1, wherein: the outer side of the rotary screen body is provided with a housing (9), and the lower part of the housing (9) is provided with a discharge hole.

3. The multi-faced inverted screen apparatus of claim 1, wherein: the indexing hub (3) is mounted on the spindle (2) through a flat key.

4. The multi-faced inverted screen apparatus of claim 1, wherein: the outer end part of the indexing screw rod (4) is fixed with a support body (8), and the support body (8) is provided with a right-angle support notch combined with the sieve grid.

5. The multi-faced inverted screen apparatus of claim 1, wherein: the sieve lattice (5) is provided with a buffer part, a sieve face part and a discharging part in sequence along the axial direction of the main shaft (2).

6. The multi-faced inverted screen apparatus of claim 4, wherein: and a sealing rubber pad is arranged between the groove surface of the right-angle support groove opening of the support body (8) and the end part of the sieve lattice (5).