CN116532362B - Single power source double-wheel classifier - Google Patents

Single power source double-wheel classifier Download PDF

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Publication number
CN116532362B
CN116532362B CN202310785918.0A CN202310785918A CN116532362B CN 116532362 B CN116532362 B CN 116532362B CN 202310785918 A CN202310785918 A CN 202310785918A CN 116532362 B CN116532362 B CN 116532362B
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China
Prior art keywords
rotating shaft
bevel gear
cavity
inclined surface
wheel
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CN202310785918.0A
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Chinese (zh)
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CN116532362A (en
Inventor
张景杰
贾文浩
刘文伟
张景宝
郑习满
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Shandong Alpa Powder Technology Co ltd
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Shandong Alpa Powder Technology Co ltd
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Priority to CN202310785918.0A priority Critical patent/CN116532362B/en
Publication of CN116532362A publication Critical patent/CN116532362A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
    • F16H3/22—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially
    • F16H3/30—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention discloses a single-power-source double-wheel classifier, which belongs to the technical field of micro powder classification and comprises an upper classifying cavity, a middle cavity and a lower classifying cavity which are sequentially connected from top to bottom, wherein an upper classifying wheel is arranged in the upper classifying cavity, a lower classifying wheel is arranged in the lower classifying cavity, and a transmission mechanism is arranged in the middle cavity; a motor is fixedly arranged outside the middle cavity, and drives the upper grading wheel and the lower grading wheel to synchronously rotate in the same direction or synchronously rotate in the opposite direction through the transmission mechanism; the invention can realize that a single power source can simultaneously control the rotation of two grading wheels, thereby reducing the equipment cost; the two classifying wheels can rotate in the same direction or in opposite directions, and the complete synchronization of the rotating speeds of the two classifying wheels can be realized; compact structure, small occupation space and convenient equipment arrangement.

Description

Single power source double-wheel classifier
Technical Field
The invention relates to the technical field of micro powder classification, in particular to a single-power-source double-wheel classifier.
Background
In recent years, the rapid development of new materials and new energy sources has led to the development of powder technology, and the requirements of various countries in the world on powder are also increasing. The most widely used mechanical mill and air flow mill in the market at present can grade the crushed powder, but the size range after grading is different from the high-requirement index of the product, and the grading efficiency is still to be improved.
The prior art discloses a CN206701727U patent, which comprises an upper machine body, a lower machine body and a feeding cavity, wherein the upper machine body and the lower machine body are vertically arranged, a rotary hollow runner device is respectively arranged in the upper machine body and the lower machine body, the powder entering the feeding cavity flows into the inner cavity of the runner device from the outer side of the rotating runner device of the upper machine body under the action of negative pressure, then flows into a discharging cavity arranged in the upper machine body from the inner cavity of the runner device, and then flows out from the discharging cavity; the coarser powder in the feeding cavity flows downwards to the outer side of the rotating wheel device of the lower machine body along the outer side of the rotating wheel device of the upper machine body under the action of negative pressure, and the rotating wheel device of the lower machine body is used for classifying the coarser powder again, so that the classification efficiency is improved, and the classification effect is also improved.
The prior devices, including the above-mentioned patents, also gradually expose the disadvantages of this technology with use, mainly in the following aspects:
1. two independent power sources are needed to be equipped at the same time, and the equipment cost is high.
2. The device is affected by the arrangement of the motor, the height and the size of the device are large, the occupied space is large, and the device is inconvenient to arrange on site.
3. The two motors respectively and independently control the two classifying wheels, so that synchronous rotating speeds are difficult to achieve.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the single-power-source double-wheel classifier aiming at the defects, and the following purposes can be achieved:
1. the single power source can control the rotation of the two classifying wheels at the same time, and the equipment cost is reduced.
2. The two classifying wheels can rotate in the same direction or in opposite directions, and the rotating speeds of the two classifying wheels can be completely synchronous.
3. Compact structure, small occupation space and convenient equipment arrangement.
In order to solve the technical problems, the invention adopts the following technical scheme: the single-power-source double-wheel classifier comprises an upper classifying cavity, a middle cavity and a lower classifying cavity which are sequentially connected from top to bottom, wherein an upper classifying wheel is arranged in the upper classifying cavity, a lower classifying wheel is arranged in the lower classifying cavity, and a transmission mechanism is arranged in the middle cavity; and a motor is fixedly arranged outside the middle cavity, and drives the upper grading wheel and the lower grading wheel to synchronously rotate in the same direction or synchronously rotate in the opposite direction through the transmission mechanism.
Further, the transmission mechanism comprises a power bevel gear, an upper bevel gear, a lower bevel gear and a spline housing, wherein the power bevel gear is fixedly arranged on a power shaft of the motor, the upper bevel gear is fixedly arranged on an upper rotating shaft, and the upper grading wheel is fixedly arranged on the upper rotating shaft; the lower bevel gear spline is connected to the lower rotating shaft, and the lower grading wheel is fixedly arranged on the lower rotating shaft; the upper rotating shaft and the lower rotating shaft are coaxially arranged, and adjacent ends are not contacted;
the power bevel gear is normally meshed with the upper bevel gear, and the power bevel gear and the lower bevel gear can be converted between a meshed state and a separated state through up-and-down movement of the lower bevel gear; the upper rotating shaft and the lower rotating shaft can be switched between a connection state and a separation state through the up-and-down movement of the spline housing.
Further, the adjacent ends of the upper rotating shaft and the lower rotating shaft are respectively provided with an external spline section, the spline housing is sleeved on the external spline section of the upper rotating shaft, and the spline housing can slide upwards or downwards so that the lower end of the spline housing is separated from or connected with the external spline section of the lower rotating shaft;
the lower bevel gear can move upwards or downwards along the external spline section of the lower rotating shaft, so that the lower bevel gear is meshed with or separated from the power bevel gear.
Further, a stop device is arranged between the spline housing and the upper rotating shaft and between the lower bevel gear and the lower rotating shaft respectively, and the stop device enables the spline housing to slide up and down on the upper rotating shaft and the lower bevel gear on the lower rotating shaft and can realize locking.
Further, the stop device comprises an upper annular groove, a lower annular groove, a guide sleeve, a positioning block and a spring, wherein an upper annular groove and a lower annular groove are arranged at intervals on external spline sections of the upper rotating shaft and the lower rotating shaft; the guide sleeve is arranged in the upper annular groove and can slide up and down in the upper annular groove;
two symmetrically arranged mounting holes are formed in the inner walls of the spline housing and the lower bevel gear, a positioning block is arranged in each mounting hole, and the outer end of each positioning block can slide out of or into each mounting hole; a spring is arranged between the inner end of the positioning block and the hole bottom of the mounting hole.
Further, an inclined plane is arranged on the outer side of the lower side wall of the upper annular groove, and the inclined plane is inclined outwards and downwards;
an outward turning part extending obliquely downwards is formed at the outer periphery of the guide sleeve, a lower inclined surface is formed on the inner side surface of the outward turning part, and an upper inclined surface is formed on the outer side surface of the outward turning part; the inclined directions and angles of the inclined planes of the lower inclined plane and the upper annular groove on the guide sleeve are the same.
Further, the positioning block is of a block-shaped structure with a right triangle-shaped cross section, the inclined surface of the positioning block is upward, and the bottom surface of the positioning block is a horizontal plane.
Further, a lower plane is formed between the lower end of the lower inclined surface and the outer circle of the guide sleeve; when the guide sleeve slides down to the lower side wall of the upper annular groove, the lower inclined surface is attached to the inclined surface, and an annular gap is formed between the lower plane and the inclined surface.
Further, the spring is stressed and compressed, so that the positioning blocks can completely enter the mounting holes;
in the state that the spring is not stressed, one end of the positioning block, which is far away from the spring, does not exceed the inner end of the upper inclined surface of the guide sleeve in the radial direction;
and in the unstressed state of the spring, one end of the positioning block, which is far away from the spring, exceeds the inner end of the inclined surface of the upper annular groove in the radial direction.
Further, the upper end of the upper rotating shaft penetrates through the fine powder upper discharging cavity and is rotationally connected to the upper bearing seat; the lower end of the lower rotating shaft penetrates through the fine powder lower discharging cavity and is rotationally connected to the lower bearing seat;
the fine powder upper discharging cavity is arranged above the upper grading cavity, and the upper bearing seat is arranged above the fine powder upper discharging cavity; the fine powder lower discharging cavity is arranged below the lower grading cavity, and the lower bearing seat is arranged below the fine powder lower discharging cavity.
After the technical scheme is adopted, compared with the prior art, the invention has the following advantages:
1. the invention can realize that a single power source can control the rotation of two grading wheels simultaneously by the transmission mechanism with three bevel gears, thereby reducing the equipment cost.
2. The transmission mechanism of the invention realizes the connection or separation of the upper rotating shaft and the lower rotating shaft through the spline sleeve capable of moving up and down, and realizes the engagement or separation of the power bevel gear and the lower bevel gear through the up and down movement of the lower bevel gear, thus realizing the same-direction or reverse rotation of the two grading wheels and realizing the complete synchronization of the rotating speeds of the two grading wheels.
3. The invention adopts one motor to drive two classifying wheels simultaneously, has compact structure and small occupied space, and is convenient for equipment arrangement.
4. According to the invention, the stop devices are respectively arranged between the spline housing and the upper rotating shaft and between the lower bevel gear and the lower rotating shaft, and the stop devices realize smooth sliding of the spline housing on the upper rotating shaft and the lower bevel gear on the lower rotating shaft and realize the locking function through a simple and novel structural design.
The invention will now be described in detail with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the state of the transmission mechanism when the upper classifying wheel and the lower classifying wheel synchronously rotate reversely;
FIG. 3 is a schematic view of the state of the transmission mechanism when the upper classifying wheel and the lower classifying wheel synchronously rotate in the same direction;
FIG. 4 is a schematic illustration of a process of spline housing drop;
FIG. 5 is an enlarged view at A in FIG. 4;
FIG. 6 is a schematic view of a guide sleeve;
fig. 7 is a schematic view of a process of dropping the lower bevel gear.
In the drawing the view of the figure,
the device comprises a 1-upper grading cavity, a 2-upper air inlet, a 3-fine powder upper discharging cavity, a 4-upper bearing seat, a 5-upper rotating shaft, a 6-lower grading cavity, a 7-lower air inlet, a 8-fine powder lower discharging cavity, a 9-lower bearing seat, a 10-coarse powder discharging hole, a 11-lower rotating shaft, a 12-upper grading wheel, a 13-lower grading wheel, a 14-motor, a 15-power bevel gear, a 16-upper bevel gear, a 17-lower bevel gear, a 18-spline housing, a 19-middle cavity, a 20-upper annular groove, a 201-inclined surface, a 21-lower annular groove, a 22-guide sleeve, a 221-everting part, a 222-lower inclined surface, a 223-upper inclined surface, a 224-plane, a 23-positioning block, a 24-spring, a 25-annular gap and a 26-mounting hole.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
Examples
As shown in fig. 1-7 together, the present invention provides a single power source dual wheel classifier, comprising an upper machine body, a middle machine body and a lower machine body, which are sequentially arranged from top to bottom, wherein the middle machine body is connected with the upper machine body and the lower machine body.
An upper grading cavity 1 is formed in the upper machine body, an upper grading wheel 12 is arranged in the upper grading cavity 1, an upper air inlet 2 communicated with the upper grading cavity 1 is formed in the side part of the upper machine body, a fine powder upper discharging cavity 3 is formed in the upper part of the upper machine body, and the fine powder upper discharging cavity 3 is communicated with the inner cavity of the upper grading wheel 12; the discharging end of the fine powder upper discharging cavity 3 is arranged at the side part; the upper part of the fine powder upper discharging cavity 3 is provided with an upper bearing seat 4.
A lower grading cavity 6 is formed in the lower machine body, a lower grading wheel 13 is arranged in the lower grading cavity 6, a lower air inlet 7 communicated with the lower grading cavity 6 is formed in the side part of the upper machine body, a fine powder lower discharging cavity 8 is formed in the lower part of the upper machine body, and the fine powder lower discharging cavity 8 is communicated with the inner cavity of the lower grading wheel 13; the discharging end of the fine powder lower discharging cavity 8 is arranged at the side part; the lower side of the lower grading cavity 6 is communicated with a coarse powder discharge port 10; the lower part of the fine powder lower discharging cavity 8 is provided with a lower bearing seat 9.
The motor 14 is fixedly arranged outside the middle machine body, and the motor 14 drives the upper grading wheel 12 and the lower grading wheel 13 to synchronously rotate in the same direction or synchronously rotate in the opposite direction through a transmission mechanism.
A middle cavity 19 is formed in the middle machine body, and the upper end and the lower end of the middle cavity 19 are respectively communicated with the upper grading cavity 1 and the lower grading cavity 6; the transmission is arranged in the intermediate chamber 19. The transmission mechanism comprises a power bevel gear 15, an upper bevel gear 16, a lower bevel gear 17 and a spline housing 18, wherein the power bevel gear 15 is fixedly arranged on a power shaft of a motor 14, the upper bevel gear 16 is fixedly arranged on an upper rotating shaft 5, and the upper end of the upper rotating shaft 5 penetrates through a fine powder upper discharging cavity 3 and is rotationally connected to an upper bearing seat 4; the upper classifying wheel 12 is fixedly arranged on the upper rotating shaft 5.
The lower bevel gear 17 is connected to the lower rotating shaft 11 through a spline, and the lower end of the lower rotating shaft 11 penetrates through the fine powder lower discharging cavity 8 and is rotationally connected to the lower bearing seat 9; the lower classifying wheel 13 is fixedly arranged on the lower rotating shaft 11.
The upper rotating shaft 5 and the lower rotating shaft 11 are coaxially arranged, and adjacent ends are not contacted; the adjacent ends of the upper rotating shaft 5 and the lower rotating shaft 11 are respectively provided with an external spline section, and the spline housing 18 can be sleeved on the external spline sections; the spline housing 18 has a height greater than the gap between the adjacent ends of the upper and lower shafts 5, 11.
The spline housing 18 is sleeved on the external spline section of the upper rotating shaft 5, and the spline housing 18 can slide upwards or downwards along the external spline section of the upper rotating shaft 5, so that the lower end of the spline housing 18 is separated from or sleeved on the external spline section of the lower rotating shaft 11, and the separation or connection of the upper rotating shaft 5 and the lower rotating shaft 11 is realized.
The power bevel gear 15 is constantly engaged with the upper bevel gear 16, and the lower bevel gear 17 is movable upward or downward along the externally splined section of the lower rotating shaft 11, so that the lower bevel gear 17 is engaged with or disengaged from the power bevel gear 15.
And stopping devices are respectively arranged between the spline housing 18 and the upper rotating shaft 5 and between the lower bevel gear 17 and the lower rotating shaft 11, and the stopping devices enable the spline housing 18 to slide up and down on the upper rotating shaft 5 and the lower bevel gear 17 on the lower rotating shaft 11 and can realize locking.
The stop device comprises an upper annular groove 20, a lower annular groove 21, a guide sleeve 22, a positioning block 23 and a spring 24, wherein the outer spline sections of the upper rotating shaft 5 and the lower rotating shaft 11 are respectively provided with the upper annular groove 20 and the lower annular groove 21 at intervals, the outer side of the lower side wall of the upper annular groove 20 is provided with an inclined plane 201, and the inclined plane 201 is inclined outwards and downwards.
The guide sleeve 22 is slidably arranged in the upper annular groove 20, the outer diameter of the guide sleeve 22 is the same as that of the external spline section, an outward turning part 221 which extends downwards in an inclined manner is formed at the outer periphery of the guide sleeve 22, a lower inclined surface 222 is formed on the inner side surface of the outward turning part 221, and an upper inclined surface 223 is formed on the outer side surface; the inclined direction and angle of the lower inclined surface 222 on the guide sleeve 22 are the same as those of the inclined surface 201 of the upper annular groove 20, the lower inclined surface 222 and the inclined surface 201 together form an inclined surface structure, and the everting part 221 is matched with the lower side wall of the upper annular groove 20 through the inclined surface structure.
A lower plane 224 is formed between the lower end of the lower inclined surface 222 and the outer circle of the guide sleeve 22, when the guide sleeve 22 slides down to the lower side wall of the upper annular groove 20, the lower inclined surface 222 is attached to the inclined surface 201, an annular gap 25 is formed between the lower plane 224 and the inclined surface 201, and the cross section of the annular gap 25 is triangular.
Alternatively, other shapes of mating surfaces, such as a right angle surface structure, may be provided between the everting portion 221 and the lower side wall of the upper annular groove 20, so long as the positioning block 23 can pass through the upper annular groove 20 smoothly.
Two symmetrically arranged mounting holes 26 are formed in the inner walls of the spline housing 18 and the lower bevel gear 17, a positioning block 23 is arranged in the mounting holes 26, and the outer end of the positioning block 23 can slide out of or into the mounting holes 26; the inner end of the positioning block 23 is connected with a spring 24, and the other end of the spring 24 is fixed at the bottom of the mounting hole 26; or, the shape and the size of the positioning block 23 are matched with those of the mounting hole 26, the inner end of the positioning block 23 is contacted with one end of the spring 24, and the other end of the spring 24 is abutted against the bottom of the mounting hole 26.
The positioning block 23 is of a block-shaped structure with a right triangle-shaped cross section, the inclined plane of the positioning block 23 is upward, the bottom surface of the positioning block 23 is a horizontal plane, and the horizontal plane of the positioning block 23 is intersected with the inclined plane of the positioning block at an acute angle.
After the spring 24 is stressed and compressed, the positioning blocks 23 can completely enter the mounting holes 26, so that smooth sliding of the spline housing 18 and the lower bevel gear 17 is realized.
In the state that the spring 24 is not stressed, the end of the positioning block 23, which is far away from the spring 24, does not exceed the inner end of the upper inclined surface 223 of the guide sleeve 22 in the radial direction, so that smooth sliding of the spline housing 18 and the lower bevel gear 17 is realized.
In the state that the spring 24 is not stressed, one end of the positioning block 23 far away from the spring 24 exceeds the inner end of the inclined plane 201 of the upper annular groove 20 in the radial direction, so that the positioning block 23 is limited by the lower side wall of the upper annular groove 20, and locking between the spline housing 18 and the upper rotating shaft 5 and locking between the lower bevel gear 17 and the lower rotating shaft 11 are realized.
The working principle of the invention is as follows:
the invention can realize that one motor drives the upper classifying wheel and the lower classifying wheel to synchronously rotate in the same direction or synchronously rotate reversely through the transmission mechanism with the structure, and particularly comprises the following steps:
when the power bevel gear is meshed with the upper bevel gear and the lower bevel gear, and the lower end of the spline housing is separated from the lower rotating shaft, the motor drives the upper bevel gear and the lower bevel gear to reversely rotate through the power bevel gear, so that the upper rotating shaft and the lower rotating shaft respectively drive the upper classifying wheel and the lower classifying wheel to reversely rotate synchronously. In this state, the locating piece is in the uide bushing below, and is spacing by last ring channel lower side wall, makes spline housing and last pivot, down bevel gear and lower pivot between all be in the locking state.
When the upper grading wheel and the lower grading wheel are required to be adjusted to synchronously rotate in the same direction, the lower bevel gear is pushed upwards, the guide sleeve applies pressure to the guide block, and the guide block is in sliding contact with the inclined surface of the positioning block in the process, under the action of the spring, the positioning block moves upwards along with the lower bevel gear and moves into the mounting hole until the positioning block is completely retracted, at the moment, the guide sleeve falls to the bottom of the upper annular groove, the positioning block pops up under the action of the spring, and the positioning block is positioned above the guide sleeve; at this time, the lower bevel gear is pushed downwards, after the outer side part of the positioning block is contacted with the upper inclined surface of the guide sleeve, the positioning block is retracted into the mounting hole under the drive of the spring through the reaction force, the lower bevel gear continuously slides downwards, when the positioning block reaches the position of the lower annular groove, the positioning block stretches into the lower annular groove under the action of the spring, and when the bottom surface of the positioning block is propped against the lower side wall of the lower annular groove, the locking between the lower bevel gear and the lower rotating shaft is realized, and at this time, the lower bevel gear is separated from the power gear.
When the lower bevel gear is separated from the power gear, the spline housing slides downwards to be connected with the lower rotating shaft, and the spline housing slides downwards as follows: the spline sleeve is pushed upwards, the guide sleeve applies pressure to the guide block, and the guide block is in sliding contact with the inclined surface of the positioning block in the process, under the action of the spring, the positioning block moves upwards along with the spline sleeve to completely retract in the mounting hole, at the moment, the guide sleeve falls to the bottom of the upper annular groove, the positioning block pops up under the action of the spring, and the positioning block is positioned above the guide sleeve; at this moment, after pushing the spline housing downwards, the outer side of the positioning block contacts with the upper inclined surface of the guide sleeve, the positioning block is retracted into the mounting hole under the drive of the spring through a reaction force, the spline housing continuously slides downwards to be connected with the outer spline section of the lower rotating shaft, and when the positioning block reaches the position of the lower annular groove, the positioning block stretches into the lower annular groove under the action of the spring, when the bottom surface of the positioning block abuts against the lower side wall of the lower annular groove, locking between the spline housing and the upper rotating shaft is realized, at this moment, the spline housing connects the upper rotating shaft with the lower rotating shaft, so that the upper bevel gear and the lower bevel gear synchronously rotate in the same direction, and the upper classifying wheel and the lower classifying wheel are driven to synchronously rotate in the same direction.
In the process, the positioning block is provided with the inclined surface, so that when the spline housing or the lower bevel gear is lifted upwards, the positioning block can be retracted into the mounting hole, and the spline housing or the lower bevel gear can slide in an unobstructed manner.
Because the bottom surface of the positioning block is a horizontal plane, when the positioning block is arranged below the guide sleeve, the lower side wall of the upper annular groove is propped against the bottom surface of the positioning block, and the limit is realized, so that the connecting sleeve or the lower bevel gear is locked in the upper annular groove, and the spline sleeve or the lower bevel gear is prevented from falling down due to gravity and external force in the running process of the equipment.
Because the guide sleeve is provided with the upper inclined surface, when the spline sleeve or the lower bevel gear falls down, the positioning block is contacted with the upper inclined surface of the guide sleeve and matched with the spring, so that the positioning block can retract into the mounting hole to avoid blocking, and smooth sliding of the spline sleeve or the lower bevel gear is realized.
Because the guide sleeve is provided with the everting part, the everting part is provided with the lower inclined surface which is matched with the inclined surface at the lower side wall of the upper annular groove, when the spline sleeve or the lower bevel gear falls down, the spline sleeve or the lower bevel gear can avoid the blocking phenomenon caused by the fact that the front end of the positioning block enters a gap between the guide sleeve and the lower side wall of the upper annular groove, and the spline sleeve or the lower bevel gear can slide down smoothly.
When the upper grading wheel and the lower grading wheel are required to be adjusted to synchronously rotate reversely by synchronous equidirectional rotation, the lower end of the spline sleeve is separated from the lower rotating shaft by pushing the spline sleeve upwards, the lower bevel gear is simultaneously pushed upwards, the lower bevel gear is meshed with the power bevel gear, when the spline sleeve and the lower bevel gear are pushed upwards, when the positioning block withdraws from the lower annular groove and moves upwards to the lower side of the upper annular groove, an annular gap is formed between the plane of the guide sleeve and the inclined plane of the lower annular groove, the positioning block jacks the guide sleeve upwards together, and when the positioning block moves upwards to the inclined plane area of the lower annular groove, the positioning block outwards pops under the action of a spring, and then the spline sleeve and the lower bevel gear are pushed upwards continuously, and the bottom horizontal plane of the positioning block is in contact with the lower side face of the upper annular groove, so that locking is realized.
The foregoing is illustrative of the best mode of carrying out the invention, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the invention is defined by the claims, and any equivalent transformation based on the technical teaching of the invention is also within the protection scope of the invention.

Claims (5)

1. The single-power-source double-wheel classifier is characterized by comprising an upper classifying cavity (1), a middle cavity (19) and a lower classifying cavity (6) which are sequentially connected from top to bottom, wherein an upper classifying wheel (12) is arranged in the upper classifying cavity (1), a lower classifying wheel (13) is arranged in the lower classifying cavity (6), and a transmission mechanism is arranged in the middle cavity (19); a motor (14) is fixedly arranged outside the middle cavity (19), and the motor (14) drives the upper grading wheel (12) and the lower grading wheel (13) to synchronously rotate in the same direction or synchronously rotate in the opposite direction through the transmission mechanism;
the transmission mechanism comprises a power bevel gear (15), an upper bevel gear (16), a lower bevel gear (17) and a spline housing (18), wherein the power bevel gear (15) is fixedly arranged on a power shaft of a motor (14), the upper bevel gear (16) is fixedly arranged on an upper rotating shaft (5), and the upper grading wheel (12) is fixedly arranged on the upper rotating shaft (5); the lower bevel gear (17) is connected to the lower rotating shaft (11) through a spline, and the lower grading wheel (13) is fixedly arranged on the lower rotating shaft (11); the upper rotating shaft (5) and the lower rotating shaft (11) are coaxially arranged, and adjacent ends are not contacted;
the power bevel gear (15) is normally meshed with the upper bevel gear (16), and the power bevel gear (15) and the lower bevel gear (17) can be switched between a meshed state and a separated state through up-and-down movement of the lower bevel gear (17); the upper rotating shaft (5) and the lower rotating shaft (11) can be switched between a connection state and a separation state through the up-and-down movement of the spline housing (18);
the adjacent ends of the upper rotating shaft (5) and the lower rotating shaft (11) are respectively provided with an external spline section, the spline housing (18) is sleeved on the external spline section of the upper rotating shaft (5), and the spline housing (18) can slide upwards or downwards so that the lower end of the spline housing (18) is separated from or connected with the external spline section of the lower rotating shaft (11);
the lower bevel gear (17) can move upwards or downwards along the external spline section of the lower rotating shaft (11) so as to enable the lower bevel gear (17) to be meshed with or separated from the power bevel gear (15);
a stop device is respectively arranged between the spline housing (18) and the upper rotating shaft (5) and between the lower bevel gear (17) and the lower rotating shaft (11), and the stop device enables the spline housing (18) to slide up and down on the upper rotating shaft (5) and the lower bevel gear (17) on the lower rotating shaft (11) and can realize locking;
the stop device comprises an upper annular groove (20), a lower annular groove (21), a guide sleeve (22), a positioning block (23) and a spring (24), wherein an upper annular groove (20) and a lower annular groove (21) are arranged at intervals on external spline sections of the upper rotating shaft (5) and the lower rotating shaft (11); the guide sleeve (22) is arranged in the upper annular groove (20), and the guide sleeve (22) can slide up and down in the upper annular groove (20);
two symmetrically arranged mounting holes (26) are formed in the inner walls of the spline housing (18) and the lower bevel gear (17), a positioning block (23) is arranged in the mounting hole (26), and the outer end of the positioning block (23) can slide out of or into the mounting hole (26); a spring (24) is arranged between the inner end of the positioning block (23) and the hole bottom of the mounting hole (26);
an inclined surface (201) is arranged on the outer side of the lower side wall of the upper annular groove (20), and the inclined surface (201) is inclined outwards and downwards;
an outward turning part (221) extending obliquely downwards is formed at the outer periphery of the guide sleeve (22), a lower inclined surface (222) is formed on the inner side surface of the outward turning part (221), and an upper inclined surface (223) is formed on the outer side surface; the lower inclined surface (222) on the guide sleeve (22) and the inclined surface (201) of the upper annular groove (20) have the same inclined direction and angle.
2. The single-power-source double-wheel classifier as claimed in claim 1, wherein the positioning block (23) has a block-shaped structure with a right triangle cross section, the inclined surface of the positioning block (23) is upward, and the bottom surface of the positioning block (23) is a horizontal plane.
3. A single power source two-wheel classifier as claimed in claim 1, wherein a lower plane (224) is formed between the lower end of the lower inclined surface (222) and the outer circumference of the guide bush (22); when the guide sleeve (22) slides downwards to the lower side wall of the upper annular groove (20), the lower inclined surface (222) is attached to the inclined surface (201), and an annular gap (25) is formed between the lower plane (224) and the inclined surface (201).
4. A single power source dual wheel classifier as claimed in claim 1 wherein said springs (24) are compressed to force said positioning blocks (23) fully into said mounting holes (26);
in the state that the spring (24) is not stressed, one end of the positioning block (23) far away from the spring (24) does not exceed the inner end of the upper inclined surface (223) of the guide sleeve (22) in the radial direction;
in the unstressed state of the spring (24), one end of the positioning block (23) far away from the spring (24) exceeds the inner end of the inclined surface (201) of the upper annular groove (20) in the radial direction.
5. A single power source two-wheel classifier as claimed in claim 1, wherein the upper end of the upper rotating shaft (5) passes through the fine powder upper discharging cavity (3) and is rotatably connected to the upper bearing seat (4); the lower end of the lower rotating shaft (11) penetrates through the fine powder lower discharging cavity (8) and is rotationally connected to the lower bearing seat (9);
the fine powder upper discharging cavity (3) is arranged above the upper grading cavity (1), and the upper bearing seat (4) is arranged above the fine powder upper discharging cavity (3); the fine powder lower discharging cavity (8) is arranged below the lower grading cavity (6), and the lower bearing seat (9) is arranged below the fine powder lower discharging cavity (8).
CN202310785918.0A 2023-06-30 2023-06-30 Single power source double-wheel classifier Active CN116532362B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164544A2 (en) * 1984-06-12 1985-12-18 Audi Ag Differential gearing
EP0198143A1 (en) * 1983-11-30 1986-10-22 Arb Corporation Limited Locking differential
JPH11303947A (en) * 1998-04-17 1999-11-02 Honda Motor Co Ltd Gear mechanism
CN101178110A (en) * 2006-11-11 2008-05-14 中国农业机械化科学研究院呼和浩特分院 Direction-changeable three gears one level cone gear transmission case
CN101774334A (en) * 2010-02-26 2010-07-14 重庆大江工业有限责任公司 Through drive axle with hyperboloid bevel gear
CN208390449U (en) * 2018-04-23 2019-01-18 青岛世纳机械设备有限公司 A kind of Split horizontal impeller grader
CN209124030U (en) * 2018-10-19 2019-07-19 东莞市五全机械有限公司 A kind of superfine powder pulverizer
CN217164768U (en) * 2022-03-11 2022-08-12 廊坊新龙立机械制造有限公司 Rotary collision type air flow crusher

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198143A1 (en) * 1983-11-30 1986-10-22 Arb Corporation Limited Locking differential
EP0164544A2 (en) * 1984-06-12 1985-12-18 Audi Ag Differential gearing
JPH11303947A (en) * 1998-04-17 1999-11-02 Honda Motor Co Ltd Gear mechanism
CN101178110A (en) * 2006-11-11 2008-05-14 中国农业机械化科学研究院呼和浩特分院 Direction-changeable three gears one level cone gear transmission case
CN101774334A (en) * 2010-02-26 2010-07-14 重庆大江工业有限责任公司 Through drive axle with hyperboloid bevel gear
CN208390449U (en) * 2018-04-23 2019-01-18 青岛世纳机械设备有限公司 A kind of Split horizontal impeller grader
CN209124030U (en) * 2018-10-19 2019-07-19 东莞市五全机械有限公司 A kind of superfine powder pulverizer
CN217164768U (en) * 2022-03-11 2022-08-12 廊坊新龙立机械制造有限公司 Rotary collision type air flow crusher

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