CN120838689A - A medium-speed vertical coal mill separator with intelligent control - Google Patents
A medium-speed vertical coal mill separator with intelligent controlInfo
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- CN120838689A CN120838689A CN202511348983.2A CN202511348983A CN120838689A CN 120838689 A CN120838689 A CN 120838689A CN 202511348983 A CN202511348983 A CN 202511348983A CN 120838689 A CN120838689 A CN 120838689A
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Abstract
The invention relates to the technical field of coal mill equipment and discloses an intelligent-control medium-speed vertical coal mill separator which comprises a shell, a static blade, a rotating blade, a static blade adjusting mechanism, a rotating blade driving control mechanism and a coal inlet pipe, and is characterized in that the static blade and the rotating blade are both arranged in the shell, the static blade adjusting mechanism is used for controlling the inclination angle of the static blade to be adjusted, and the rotating blade driving control mechanism is used for controlling the rotating blade to rotate; according to the medium-speed vertical coal mill separator, the static blades and the rotating blades which can be adjusted in a rotating way are arranged, so that the airflow direction can be guided, the fineness of coal dust can be flexibly adjusted according to the working condition change, the rotating blade driving control mechanism drives the rotating frame to rotate when the driving pipe rotates positively, the rotating blades which are rotatably arranged on the rotating frame rotate along with the rotating frame to realize dynamic separation of coal dust, and the rotating frame does not rotate along with the driving pipe but rotates along with the driving pipe when the driving pipe rotates reversely, so that the effect of flexibly guiding the airflow direction is achieved.
Description
Technical Field
The invention relates to the technical field of coal mill equipment, in particular to an intelligent-control medium-speed vertical coal mill separator.
Background
In the industrial fields of modern thermal power generation, cement production and the like, a medium-speed vertical coal mill becomes core equipment for preparing coal dust due to the advantages of high efficiency, energy conservation, small occupied area and the like. The separator is used as a key component of the medium-speed vertical coal mill, the performance of the separator directly influences the granularity distribution and quality of coal powder, and further the energy consumption and efficiency of the whole production flow are related, and the traditional medium-speed vertical coal mill separator mostly adopts a static or dynamic structure. The static separator realizes pulverized coal classification by means of a fixed blade structure and airflow, has low separation efficiency, is difficult to flexibly adjust pulverized coal fineness according to working condition changes, is easy to wear after long-time operation, and causes unstable pulverized coal granularity. Although the dynamic separator improves the separation precision to a certain extent by introducing the rotating component, the rotating speed adjustment of the traditional dynamic separator often depends on manual experience, cannot respond to the dynamic changes of parameters such as the load of a coal mill, the property of raw coal and the like in real time, and has the problems of lag response, inaccurate adjustment and control and the like.
Chinese patent CN114653464B discloses a rotary separator for coal mill of thermal power station, which fully mixes the coal powder and air entering the leaf cage by setting turbulence mechanism, and reduces the difference of coal powder concentration at the powder outlet pipe.
The rotor guide blades arranged in the separator rotate along with the hollow rotating shaft when the separator works, so that dynamic separation of coal dust is realized, but the inclination angle of the rotor guide blades cannot be adjusted in the mode, and the fineness of the coal dust cannot be flexibly adjusted according to the change of working conditions.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides an intelligent-control medium-speed vertical coal mill separator which has the function of adjusting the fineness of coal dust and solves the problems in the prior art.
(II) technical scheme
In order to solve the technical problems, the invention provides the following technical scheme:
The intelligent-control medium-speed vertical coal mill separator comprises a shell, a static blade, a rotating blade, a static blade adjusting mechanism, a rotating blade driving control mechanism and a coal inlet pipe, and is characterized in that the static blade and the rotating blade are both arranged in the shell, the static blade adjusting mechanism is used for controlling the inclination angle adjustment of the static blade, and the rotating blade driving control mechanism is used for controlling the rotation of the rotating blade and can control the inclination angle adjustment of the rotating blade;
the rotary vane driving control mechanism comprises a driving pipe, a control panel, a rotary frame and a forward and backward rotation control assembly, wherein the driving pipe is rotationally arranged in the shell, the control panel is sleeved on the outer wall of the driving pipe, the rotary frame is fixedly arranged outside the control panel, the rotary vanes are rotationally arranged on the rotary frame, the backward and forward rotation control assembly is arranged on the control panel and is used for driving the rotary frame to rotate along with the driving pipe when the driving pipe rotates forward, and the rotary frame is static and the rotary vanes rotate along with the driving pipe when the driving pipe rotates backward;
The inside of shell is provided with the feed back funnel, advance the coal pipe setting in the inside of drive pipe, and advance coal pipe and feed back funnel fixed connection.
Preferably, the forward and reverse rotation control assembly comprises a forward rotation transmission structure, the forward rotation transmission structure comprises an inner ratchet ring and a forward rotation transmission block, the inner ratchet ring is fixedly arranged on the inner side wall of the control panel, ratchets are arranged on the inner side surface of the inner ratchet ring, the forward rotation transmission block is slidably arranged on the outer wall of the driving tube, and the forward rotation transmission block is in adaptive insertion connection with the ratchets of the inner ratchet ring.
Preferably, the positive and negative control assembly comprises a reverse control structure, the reverse control structure comprises an inner ratchet outer toothed ring, a reverse transmission block, an intermediate gear, an inner toothed ring, an outer toothed ring and a driven gear, wherein the inner ratchet outer toothed ring is fixedly arranged on the inner side wall of the control disc, ratchet teeth and gear teeth are respectively arranged on the inner side and the outer side of the inner ratchet outer toothed ring, the reverse transmission block is slidably arranged on the outer wall of the driving tube, the reverse transmission block is in matched insertion connection with the ratchet teeth of the inner ratchet outer toothed ring, one ends of the reverse transmission block, which are far away from the driving tube, are respectively provided with a slope surface, slope surfaces on the reverse transmission block and the forward transmission block are opposite, an extension groove is formed in the outer side wall of the control disc, an adjusting cavity is formed in the rotary frame, the inside of the extension groove is communicated with the inside of the adjusting cavity, a rotating rod is fixedly arranged on the driven gear, the rotating rod is rotatably arranged in the inside of the adjusting cavity, the end of the rotating rod penetrates through the inner wall of the adjusting cavity and is fixedly connected with a rotating blade, and the inner toothed ring and the outer toothed ring are respectively meshed with the intermediate gear and the inner toothed ring.
Preferably, the outer wall fixed mounting of actuating tube has the transmission ring, the slot has been seted up to the lateral wall of transmission ring, the tip fixed mounting of slot has compression spring, forward rotation transmission piece and reverse rotation transmission piece all slide the grafting in the inside of slot, and forward rotation transmission piece and reverse rotation transmission piece respectively with compression spring fixed connection.
Preferably, the positive and negative rotation control assembly further comprises a reverse rotation limiting structure, the reverse rotation limiting structure comprises a supporting ring, a connecting plate, a sliding block, a friction plate and a reset spring, the rotating frame is rotatably lapped on the upper surface of the supporting ring, the connecting plate is fixedly arranged on the supporting ring, the sliding block is slidably arranged on the connecting plate, the friction surface of the friction plate and the outer side wall of the rotating frame are provided with friction surfaces which are mutually matched, the friction plate is fixedly arranged at the end part of the sliding block, and two ends of the reset spring are fixedly connected with the sliding block and the connecting plate respectively.
Preferably, a supporting rod is fixedly connected between the shell and the return funnel, a connecting rod is fixedly connected between the coal inlet pipe and the return funnel, and the connecting plate is fixedly connected with the upper end of the return funnel.
Preferably, the stationary blade sets up between the roof in shell and the top of feed back funnel, quiet leaf adjustment mechanism is including blocking grey chamber, transmission ring gear, accommodate motor, driving gear, driven shaft and driven gear, it sets up the interior roof at the shell to hinder grey chamber, the transmission ring gear rotates the inside of installing in blocking grey chamber, accommodate motor fixed mounting is in the outside of shell, and accommodate motor's drive shaft and drive gear fixed connection, the driven shaft rotates the inside of installing in blocking grey chamber, and the driven shaft runs through the interior wall that blocks grey chamber and extends to the inside of shell and with stationary blade fixed connection, drive gear and driven gear all are connected with transmission ring gear meshing.
Preferably, the top of shell fixed mounting has the distributor, the bottom of distributor extends to the inside of shell, and the bottom of distributor sets up in rotating vane's inboard, the powder outlet pipe that is annular array distribution is installed to the upper end of distributor, and the upper portion of distributor sets up to the back taper, the inner wall of distributor is provided with spiral spoiler.
Preferably, the driving pipe is rotatably connected with the distributor, and a disturbance rod is fixedly arranged on the outer surface of the driving pipe in the distributor.
Preferably, the rotary vane driving control mechanism further comprises a forward and reverse rotation driving motor, the forward and reverse rotation driving motor is arranged outside the distributor, and the driving end of the forward and reverse rotation driving motor is in transmission connection with the driving tube through a transmission belt wheel.
(III) beneficial effects
Compared with the prior art, the invention provides the intelligent-control medium-speed vertical coal mill separator, which has the following beneficial effects:
1. According to the medium-speed vertical coal mill separator, the rotating blades and the rotating blades which can be adjusted in a rotating way are arranged, so that the airflow direction can be guided in work, the fineness of coal dust can be flexibly adjusted according to the change of working conditions, the rotating blade driving control mechanism drives the rotating frame to rotate when the driving pipe rotates positively, the rotating blades which are rotatably arranged on the rotating frame rotate along with the rotating frame to realize dynamic separation of coal dust, and the rotating frame does not rotate along with the driving pipe but rotates along with the driving pipe when the driving pipe rotates reversely, so that the effect of flexibly guiding the airflow direction is achieved.
2. The separator for the medium-speed vertical coal mill comprises a forward rotation transmission structure, a reverse rotation control structure and a reverse rotation limiting structure, wherein when a driving pipe rotates forward, a forward rotation transmission block pushes an inner ratchet ring fixed in a control disc to rotate, so that an inner ratchet outer gear ring rotatably installed in the control disc is fixed relative to the reverse rotation transmission block, the angle of a rotating blade is kept unchanged, when the driving pipe rotates reversely, friction force between a friction plate and a rotating frame enables the forward rotation transmission block to push the inner ratchet ring to deviate from the inner ratchet ring, the control disc cannot be pushed to rotate, at the moment, the reverse rotation transmission block pushes the inner ratchet outer gear ring to rotate, and the inner ratchet outer gear ring drives a driven gear to rotate through an intermediate gear and the inner gear ring, so that the angle of the rotating blade is adjusted.
3. According to the separator of the medium-speed vertical coal mill, the spiral spoiler is arranged in the distributor, the disturbance rod is arranged on the driving pipe, so that coal powder is disturbed by the disturbance rod and approaches the inverted conical inner wall on the upper part of the distributor when entering the distributor, the coal powder and air are fully mixed under the action of the spiral spoiler, and the concentration difference of the coal powder at the position of the powder outlet pipe is reduced.
Drawings
FIG. 1 is a schematic perspective view of a coal pulverizer separator according to the present invention;
FIG. 2 is a second perspective view of a separator of the coal pulverizer of the present invention;
FIG. 3 is an enlarged schematic view of a partial structure at A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged schematic view of a partial structure at B in FIG. 2 according to the present invention;
FIG. 5 is an enlarged schematic view of a partial structure at C in FIG. 2 according to the present invention;
FIG. 6 is a third perspective view of a separator of the coal pulverizer of the present invention;
FIG. 7 is an enlarged schematic view of a partial structure at D in FIG. 6 according to the present invention;
FIG. 8 is an enlarged schematic view of a portion of the structure of FIG. 6E in accordance with the present invention;
FIG. 9 is a schematic perspective view of a separator of a coal pulverizer of the present invention;
FIG. 10 is an enlarged schematic view of a partial structure at F in FIG. 9 according to the present invention;
FIG. 11 is a schematic perspective view of a separator of a coal pulverizer of the present invention.
In the figure:
1. The device comprises a shell, 2, static blades, 3, rotating blades, 4, a static blade adjusting mechanism, 41, an ash blocking cavity, 42, a transmission toothed ring, 43, an adjusting motor, 44, a driving gear, 45, a driven shaft, 46, a driven gear, 5, a rotating blade driving control mechanism, 51, a forward and reverse rotation driving motor, 52, a driving pipe, 521, a transmission ring, 522, a slot, 523, a pressure spring, 53, a control panel, 531, an extension slot, 54, a rotating frame, 541, an adjusting cavity, 55, a forward rotation transmission structure, 551, an inner ratchet ring, 552, a forward rotation transmission block, 56, a reverse rotation control structure, 561, an inner ratchet outer toothed ring, 562, a reverse rotation transmission block, 563, an intermediate gear, 564, an inner ratchet ring, 565, a driven gear, 566, a rotating rod, 57, a reverse rotation limiting structure, 571, a supporting ring, 572, a connecting plate, 573, a sliding block, 574, a friction plate, 575, a reset spring, 6, a coal feeding pipe, 7, a return hopper, 71, a supporting rod, 72, a connecting rod, 8, a distributor, 81, a powder discharging pipe, 82, a spiral rod and a stirring rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1,2, 6 and 9, the invention provides an intelligent-control medium-speed vertical coal mill separator, which comprises a shell 1, a static blade 2, a rotating blade 3, a static blade adjusting mechanism 4, a rotating blade driving control mechanism 5 and a coal inlet pipe 6, wherein the static blade 2 and the rotating blade 3 are both arranged in the shell 1, the static blade adjusting mechanism 4 is used for controlling the inclination angle adjustment of the static blade 2, the rotating blade driving control mechanism 5 is used for controlling the rotation of the rotating blade 3, and the inclination angle adjustment of the rotating blade 3 can be controlled;
The rotary vane driving control mechanism 5 comprises a driving pipe 52, a control panel 53, a rotary frame 54 and a forward and backward rotation control component, wherein the driving pipe 52 is rotationally arranged in the shell 1, the control panel 53 is sleeved on the outer wall of the driving pipe 52, the rotary frame 54 is fixedly arranged outside the control panel 53, the rotary vanes 3 are rotationally arranged on the rotary frame 54, the forward and backward rotation control component is arranged on the control panel 53 and is used for driving the rotary frame 54 to rotate along with the driving pipe 52 when the driving pipe 52 rotates forward, and the rotary frame 54 is stationary and the rotary vanes 3 rotate along with the driving pipe 52 when the driving pipe 52 rotates backward;
the inside of shell 1 is provided with feed back funnel 7, and advance coal pipe 6 setting is in the inside of drive tube 52, and advance coal pipe 6 and feed back funnel 7 fixed connection.
From the above, the casing 1 of the separator of the medium speed vertical coal mill is used as a supporting structure to provide an installation space and an isolation environment for internal components. The static blades 2 can adjust the inclination angle under the control of the static blade adjusting mechanism 4 to initially guide the airflow direction and create conditions for pulverized coal separation, and the rotating blades 3 are controlled by the rotating blade driving control mechanism 5, so that the rotating speed can be adjusted, the inclination angle can be controlled, classified pulverized coal can be further screened through centrifugal force generated by rotation, and the separation precision is improved. When the driving tube 52 of the rotary vane driving control mechanism 5 rotates positively, the positive and negative rotation control component drives the rotating frame 54 and the rotary vanes 3 to rotate synchronously to form a dynamic separation field, so that the pulverized coal is separated under the action of centrifugal force and air flow, and when the driving tube 52 rotates reversely, the rotating frame 54 is static, and only the rotary vanes 3 rotate along with the driving tube 52, so that different separation effects are realized. The coal inlet pipe 6 is responsible for sending raw coal into the separator, the feed back hopper 7 collects coarse coal powder which does not meet the fineness requirement, and sends the coarse coal powder back to the coal mill for secondary grinding, so that the utilization rate of coal is improved, all parts work cooperatively, flexible adjustment of the fineness of coal powder and optimal distribution of air flow are achieved, and the working efficiency and the quality of coal powder of the coal mill are improved.
When the device is used, the shell 1 is arranged at the top end of the medium-speed vertical coal mill, coal blocks discharged from the lower end of the coal inlet pipe 6 and coarse coal powder discharged from the lower end of the return hopper 7 fall into the coal mill for grinding, fine powder generated by grinding of the coal mill is conveyed upwards through an internal air supply structure, enters the separator from the position between the return hopper 7 and the shell 1, and is discharged from the powder outlet pipe 81 after being separated by the static blades 2 and the rotating blades 3 in sequence.
In the second embodiment, as shown in fig. 2, 3 and 6-10, the difference between the present embodiment and the above embodiment is that the forward and reverse rotation control assembly includes a forward rotation transmission structure 55, the forward rotation transmission structure 55 includes an inner ratchet ring 551 and a forward rotation transmission block 552, the inner ratchet ring 551 is fixedly installed on the inner side wall of the control disc 53, the inner side surface of the inner ratchet ring 551 is provided with a ratchet, the forward rotation transmission block 552 is slidably installed on the outer wall of the driving tube 52, and the forward rotation transmission block 552 is in fit connection with the ratchet of the inner ratchet ring 551.
The forward and reverse rotation control assembly comprises a reverse rotation control structure 56, the reverse rotation control structure 56 comprises an inner ratchet outer tooth ring 561, a reverse rotation transmission block 562, an intermediate gear 563, an inner and outer tooth ring 564 and a driven gear 565, the inner ratchet outer tooth ring 561 is fixedly arranged on the inner side wall of the control disc 53, ratchet teeth and gear teeth are respectively arranged on the inner side and the outer side of the inner ratchet outer tooth ring 561, the reverse rotation transmission block 562 is slidably arranged on the outer wall of the driving tube 52, the reverse rotation transmission block 562 is in matched connection with the ratchet teeth of the inner ratchet outer tooth ring 561, one ends of the reverse rotation transmission block 562 and the forward rotation transmission block 552, which are far away from the driving tube 52, are respectively provided with slope surfaces, the slope surfaces on the reverse rotation transmission block 562 and the forward rotation transmission block 552 face opposite directions, the outer side wall of the control disc 53 is provided with an extension groove 531, an adjusting cavity 541 is arranged in the rotating frame 54, the extension groove 531 is communicated with the inner side of the adjusting cavity 541, a rotating rod 566 is fixedly arranged on the driven gear 565, the rotating shaft 566 is rotatably arranged in the adjusting cavity 541, the end portion of the adjusting cavity 566 penetrates through the inner wall of the adjusting cavity 541, the inner wall of the adjusting cavity 566 and the rotating blade 3 is fixedly connected with the extension groove 531, and is fixedly meshed with the extension groove and is connected with the extension groove.
The outer wall of the driving pipe 52 is fixedly provided with a driving ring 521, the outer side wall of the driving ring 521 is provided with an inserting groove 522, the end part of the inserting groove 522 is fixedly provided with a pressure spring 523, a forward rotation driving block 552 and a reverse rotation driving block 562 are both in sliding insertion connection with the inside of the inserting groove 522, and the forward rotation driving block 552 and the reverse rotation driving block 562 are respectively fixedly connected with the pressure spring 523.
The positive and negative rotation control assembly further comprises a reverse rotation limiting structure 57, the reverse rotation limiting structure 57 comprises a supporting ring 571, a connecting plate 572, a sliding block 573, a friction plate 574 and a reset spring 575, the rotating frame 54 is rotatably lapped on the upper surface of the supporting ring 571, the connecting plate 572 is fixedly arranged on the supporting ring 571, the sliding block 573 is slidably arranged on the connecting plate 572, the friction surface of the friction plate 574 and the outer side wall of the rotating frame 54 are provided with mutually matched friction surfaces, the friction plate 574 is fixedly arranged at the end part of the sliding block 573, and two ends of the reset spring 575 are fixedly connected with the sliding block 573 and the connecting plate 572 respectively.
As can be seen from the above, when the driving tube 52 rotates positively, the pressure spring 523 pushes the forward rotation transmission block 552 to insert into the ratchet teeth of the inner ratchet ring 551, so that the control disc 53 rotates synchronously with the driving tube 52 to drive the rotating frame 54 and the rotating blades 3 to rotate integrally, so as to realize dynamic separation, at this time, the slope surface of the reverse rotation transmission block 562 contacts with the ratchet teeth of the inner ratchet and outer gear ring 561, and the reverse rotation transmission block 562 is pressed back to the slot 522 to disengage from the inner ratchet and outer gear ring 561 due to the opposite slope direction;
when the driving tube 52 rotates reversely, the friction surfaces of the friction plates 574 and the rotating frame 54 provide resistance, so that the rotating frame 54 does not rotate along with the driving tube 52, and the return springs 575 ensure that the friction plates 574 are separated from contact in normal rotation, so that normal transmission is prevented from being influenced.
Two working modes are realized through one set of mechanism, the pulverized coal is classified by utilizing rotary centrifugal force during forward rotation, and the air flow distribution is optimized through blade angle adjustment during reverse rotation, so that the adaptability and the separation efficiency of the separator are obviously improved.
In the third embodiment, as shown in fig. 2, 4 and 5, the difference between the present embodiment and the above embodiment is that a supporting rod 71 is fixedly connected between the housing 1 and the return funnel 7, a connecting rod 72 is fixedly connected between the coal feeding pipe 6 and the return funnel 7, and the connecting plate 572 is fixedly connected with the upper end of the return funnel 7.
From the above, through setting up bracing piece 71 and connecting rod 72 for advance coal pipe 6 and shell 1 fixed, guarantee simultaneously that the clearance size that the buggy passes through is unchangeable, the rigid connection of bracing piece 71 and connecting rod 72 ensures that quiet leaf in the adjustment process, feed back funnel 7 and advance coal pipe 6 stable in position, avoid the buggy maldistribution that leads to because of the vibration.
The static blade 2 sets up between the roof in shell 1 and the top of feed back funnel 7, quiet leaf adjustment mechanism 4 includes and hinders grey chamber 41, transmission ring gear 42, accommodate motor 43, driving gear 44, driven shaft 45 and driven gear 46, hinder grey chamber 41 setting at the roof in shell 1, the inside in hinder grey chamber 41 is installed in the rotation of transmission ring gear 42, accommodate motor 43 fixed mounting is in the outside of shell 1, and accommodate motor 43's drive shaft and driving gear 44 fixed connection, driven shaft 45 rotation is installed in the inside in hinder grey chamber 41, and driven shaft 45 runs through the interior wall in hinder grey chamber 41 and extends to the inside of shell 1 and with static blade 2 fixed connection, drive gear 44 and driven gear 46 all mesh with transmission ring gear 42 and be connected.
As can be seen from the above, when the adjusting motor 43 is started, the driving gear 44 drives the driving gear ring 42 to rotate, and the driven gear 46 drives the driven shaft 45 to rotate synchronously, so that the angles of the stationary blades 2 are adjusted uniformly.
Fourth embodiment as shown in fig. 9 and 11, the present embodiment is different from the above embodiment in that a distributor 8 is fixedly installed at the top of a housing 1, the bottom of the distributor 8 extends into the housing 1, the bottom of the distributor 8 is disposed at the inner side of a rotating blade 3, a powder outlet pipe 81 distributed in a ring-shaped array is installed at the upper end of the distributor 8, the upper portion of the distributor 8 is configured as an inverted cone, and a spiral spoiler 82 is disposed at the inner wall of the distributor 8.
From the above, the reverse taper upper part of the distributor 8 reduces the air flow speed by using the divergent flow channel, the spiral spoiler 82 guides the air flow to form spiral ascending motion, and the mixing effect of the pulverized coal and the air is enhanced.
The driving tube 52 is rotatably connected with the distributor 8, and a disturbance rod 83 is fixedly arranged on the outer surface of the driving tube 52 inside the distributor 8.
From the above, the rotation disturbance rotates synchronously with the driving tube 52, so that the pulverized coal aggregate can be broken, the particle dispersion degree is improved, and meanwhile, the pulverized coal particles are dispersed to be close to the upper inverted cone inner wall of the distributor 8 under the action of the disturbance.
The rotary vane driving control mechanism 5 further comprises a forward and reverse rotation driving motor 51, the forward and reverse rotation driving motor 51 is arranged outside the distributor 8, and the driving end of the forward and reverse rotation driving motor 51 is in transmission connection with the driving tube 52 through a transmission belt wheel.
As described above, by providing the forward/reverse rotation driving motor 51, the forward/reverse rotation of the driving tube 52 can be controlled.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
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| CN202511348983.2A CN120838689B (en) | 2025-09-22 | 2025-09-22 | But intelligent regulation's vertical coal pulverizer separator of medium speed |
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| CN202511348983.2A CN120838689B (en) | 2025-09-22 | 2025-09-22 | But intelligent regulation's vertical coal pulverizer separator of medium speed |
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| 郝建军;刘云云;刘波;尹沛荣;: "锥环式CVT速比控制机构的设计与试验研究", 机械设计与制造, no. 12, 8 December 2014 (2014-12-08), pages 78 - 81 * |
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| CN120838689B (en) | 2025-12-05 |
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