CN104069919A - Coal sample pulverizing device - Google Patents
Coal sample pulverizing device Download PDFInfo
- Publication number
- CN104069919A CN104069919A CN201410324709.7A CN201410324709A CN104069919A CN 104069919 A CN104069919 A CN 104069919A CN 201410324709 A CN201410324709 A CN 201410324709A CN 104069919 A CN104069919 A CN 104069919A
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- cylinder
- powder making
- milling
- pulverizing
- eccentric hammer
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Links
- 238000010298 pulverizing process Methods 0.000 title claims abstract description 54
- 239000003245 coal Substances 0.000 title claims abstract description 45
- 230000008878 coupling Effects 0.000 claims abstract description 49
- 238000010168 coupling process Methods 0.000 claims abstract description 49
- 238000005859 coupling reaction Methods 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims description 98
- 238000003801 milling Methods 0.000 claims description 49
- 238000007599 discharging Methods 0.000 claims description 15
- 238000010926 purge Methods 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 20
- 241000406668 Loxodonta cyclotis Species 0.000 description 9
- 235000013312 flour Nutrition 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention relates to a coal sample pulverizing device which comprises a power unit, an eccentric hammer unit, a coupling unit and a pulverizing unit. The pulverizing device can realize automatic pulverization, and can automatically discharge obtained pulverized coal as required, and thus being beneficial to intelligent pulverization in the whole automatic system. The operating efficiency is improved.
Description
Technical Field
The invention relates to the field of coal sample monitoring, in particular to a coal sample pulverizing device.
Background
At present, most of coal powder sample preparation work adopts a hammering type or pair roller type crusher, the crusher has great damage to the nature of the coal sample, the representativeness of the coal sample is influenced, or the coal sample with the particle size completely meeting the test requirement is difficult to prepare, so the coal sample also needs to be screened manually. Although a material bowl type coal sample pulverizer used in the market for a long time can meet the requirement of a test on the size of coal sample particles, the pulverizer needs to manually feed materials, and after the pulverizing is finished, the coal sample needs to be manually taken out from a material bowl, so that the automatic operation cannot be realized, and the development trend of unmanned intelligent sample preparation is difficult to adapt. In addition, in the whole sample preparation process using the multiple crushers, workers need to work in a high-dust and high-noise environment for a long time, the working environment is severe, the sample preparation procedure is complex, the labor intensity of the workers is high, the working efficiency is low, and the accuracy of a sample is difficult to ensure due to the influence of human factors.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the coal sample pulverizing device which has high automation degree, good accuracy and environmental protection.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a coal sample pulverizing apparatus including a power unit, an eccentric weight unit, a coupling unit, and a pulverizing unit; the power unit provides power for the coal sample pulverizing device; the eccentric hammer unit comprises an eccentric hammer shaft and an eccentric hammer body; the eccentric hammer shaft is connected with the power output end of the power unit and is driven by the power unit to rotate; the eccentric hammer shaft is eccentrically arranged on the eccentric hammer and rotates around the eccentric hammer shaft; the milling unit comprises a milling outer cylinder, a milling inner cylinder and a discharge hole, and the milling outer cylinder is fixedly arranged above the eccentric hammer unit; the discharging guide device is arranged at the bottom of the milling outer barrel and used for guiding unloaded materials to the discharging port, the discharging chute is communicated with the discharging port, and coal samples after milling are discharged through the discharging chute; the powder making inner cylinder is arranged in the powder making outer cylinder and comprises a powder making block, a powder making ring and a powder making inner cylinder opening and closing mechanism; the powder making block and the powder making ring are movably arranged in the powder making inner barrel, and the powder making ring is arranged at the periphery of the powder making block; the powder making block and the powder making ring are movably arranged in the powder making inner barrel, and the powder making block is arranged in the powder making ring.
Preferably, the device further comprises a support and a spring unit, wherein the spring unit comprises a spring seat, a spring pin 52 and a spring, the spring seat is arranged on the support unit, one end of the spring is connected with the spring seat, and the other end of the spring is connected with the pulverizing unit.
Preferably, the powder making inner cylinder opening and closing mechanism comprises an execution cylinder, a powder making inner cylinder bottom cover opening and closing element and a stroke limiting nut, wherein a cylinder rod 58 of the execution cylinder is connected with the powder making inner cylinder bottom cover opening and closing element, the powder making inner cylinder bottom cover opening and closing element is connected with the powder making inner cylinder bottom cover, and the powder making inner cylinder wall is driven to move by the action of the execution cylinder so as to realize opening and closing; the stroke limiting nut is arranged on the air cylinder rod 58 and can adjust the position of the air cylinder rod up and down; when the air cylinder rod moves, the stroke control nut limits the movement range of the air cylinder rod through the stopping function of the stopper.
Preferably, the power device is an external rotor motor.
Preferably, the mechanism for connecting the eccentric hammer shaft with the power output end of the power unit comprises a coupling unit; the coupling unit comprises an elastic coupling pad, a first coupling and a second coupling, the upper end of the coupling unit is provided with the elastic coupling pad, the elastic coupling pad is used for connecting the lower end of the eccentric hammer shaft with the first coupling on the upper side, and the second coupling on the lower side is connected with an output shaft of the outer rotor motor through the key; the first coupler and the second coupler are both provided with convex teeth and grooves, and the first coupler and the second coupler are connected in a manner that the convex teeth and the grooves are mutually nested.
Preferably, the pulverizing inner barrel further comprises a purging medium inlet which is communicated with the inside of the pulverizing inner barrel, and the purging medium is supplied through the purging medium inlet so as to remove residual coal samples in the inner barrel and the outer barrel.
Preferably, the purging medium is a gas, and the milling inner cylinder further comprises a feeding chute, wherein the feeding chute is used for supplying materials to the inside of the milling inner cylinder; the flushing medium inlet is arranged in the feed chute.
Preferably, the powder making cylinder bottom cover is driven to move by the action of the execution cylinder so as to realize opening and closing.
Preferably, the number of the actuating cylinders comprises a plurality of actuating cylinders, and the actuating cylinders are connected with a plurality of positions of the bottom cover.
According to the invention, automatic powder making can be realized through the powder making device, and the prepared coal powder can be automatically discharged when the prepared coal powder needs to be discharged, so that intelligent powder making can be realized in the whole automatic system, and the working efficiency is improved.
Drawings
FIG. 1 is a general block diagram of an automated cornmill according to an embodiment of the present invention;
FIG. 2 is a schematic connection diagram of an outer rotor motor and an eccentric hammer of the automatic pulverizer according to the embodiment of the present invention;
FIG. 3 is an internal structure diagram of a pulverizing mechanism of the automatic pulverizer of the embodiment of the invention;
fig. 4 is a sectional view of the connection mode of the cylinder rod of the actuating cylinder of the automatic cornmill and the opening mechanism of the bottom cover of the cornmill inner cylinder according to the embodiment of the invention.
Detailed Description
For a better understanding of the present invention, specific embodiments thereof are described below in conjunction with the accompanying drawings. However, the following detailed description is only a preferred example of the present invention and should not be construed to limit the scope of the present invention.
The embodiment of the invention adopts an automatic operation flour mill.
As shown in fig. 1, the automatic coal sample pulverizer according to the embodiment of the present invention includes a power unit, an eccentric weight unit, a coupling unit, a bracket, a spring unit, and a pulverizing unit.
The power unit provides power for the cornmill. Preferably, the power unit adopts an outer rotor motor 1, and the outer rotor motor is located at the lower part of a bracket 2.
The upper end and the lower end of an eccentric hammer shaft 31 of the eccentric hammer 3 are provided with bearings 32, a group of couplings 4 are arranged inside a coupling outer cylinder 41, an elastic coupling cushion 42 is arranged at the upper end of each coupling, the elastic coupling cushion 42 is connected with one of the lower end and the upper side of the eccentric hammer shaft 31, one of the couplings on the lower side of the coupling 4 and the lower side of the coupling outer cylinder is connected with an output shaft 11 of an outer rotor motor through a key 43, the lower end of the eccentric hammer outer cylinder 33 is connected with the coupling outer cylinder 41 through a bolt, the upper end of the eccentric hammer outer cylinder is arranged below a powder making cylinder seat 51 in a bolt connection mode, the lower end of the coupling outer cylinder 41 is connected with the outer rotor motor through a bolt, the powder making cylinder seat 51 is connected with a spring seat 54 through a vibration buffer spring 53 positioned by a spring pin 52.
The power unit is used for inputting power to the flour mill, and preferably comprises a rotor motor. The power unit is connected with the coupler unit and transmits power to a shaft connected with the power unit through the coupler.
The coupling unit comprises a coupling outer cylinder 41, an elastic coupling pad 42, a first coupling, a second coupling and a key 43. The elastic coupling pad 42, the first coupling, the second coupling and the key 43 are arranged in the outer coupling cylinder. A first coupler and a second coupler are arranged inside the coupler outer barrel, an elastic coupler cushion 42 is arranged at the upper end of the first coupler, and the elastic coupler cushion 42 is connected with the lower end of the eccentric hammer shaft. The second coupling is connected to the output shaft of the external rotor motor via the key 43.
The eccentric weight unit includes an eccentric weight outer cylinder 33, an eccentric weight shaft, and a bearing. The upper end of the outer cylinder of the eccentric hammer unit is arranged below the pulverizing cylinder seat 51 in a bolt connection mode, and the lower end of the outer cylinder 33 of the eccentric hammer is connected with the outer cylinder of the coupler through bolts. The lower end of the coupler outer cylinder is connected with an outer rotor motor through a bolt, and an eccentric hammer and a group of bearings are arranged inside the eccentric hammer outer cylinder 33. The shaft of the eccentric hammer is borne by a bearing and is connected with the outer rotor motor through a coupling unit, and power is obtained from the outer rotor motor. The eccentric hammer refers to a mechanism which is asymmetric along two sides of an eccentric hammer shaft.
As shown in fig. 3, the pulverizing unit of the embodiment of the present invention includes a pulverizing barrel seat 51, a pulverizing outer barrel 55, an executing cylinder 56, a cylinder seat 57, a cylinder rod 58, a stroke limiting nut 59, a pulverizing inner barrel 60, a pulverizing inner barrel bottom cover opening mechanism 61, a pulverizing inner barrel bottom cover 62, a pulverizing block 63, a pulverizing ring 64, a ramp 65, a discharge hole 66, a discharge chute 67, a feeding chute 68, an air pipe joint 69, and a purge air inlet 70.
The pulverizing barrel seat 51 is connected with a spring seat 54 through a vibration buffering spring 53 positioned by a spring positioning pin 52, and the spring seat 54 is supported by a bracket. Further preferably, the springs are uniformly arranged on the edges of the powder making barrel base and the spring seat 54.
The vibration buffer spring 53 is used for generating vibration with different amplitudes when the cornmill is in three processes of starting, stopping and stable operation, particularly, the vibration amplitude is particularly obvious when the vibration frequency in the starting and stopping processes is consistent with the inherent resonance frequency of the automatic operation cornmill, if the vibration buffer spring 53 is not arranged on the automatic operation cornmill and is connected to a support, huge vibration damage action can be generated between the support and the ground or a platform for placing the automatic operation cornmill, the vibration buffer spring 53 is arranged on the automatic operation cornmill and is used as an indirect connecting mechanism between the automatic operation cornmill and the ground or the platform for placing the automatic operation cornmill, so that the vibration force generated when the automatic operation cornmill operates can be effectively absorbed, and the damage to the ground or the platform for placing the automatic operation cornmill is reduced, meanwhile, the automatic operation cornmill can be protected to a certain extent.
Other mechanism cylinders of the powder making device are arranged on the powder making cylinder seat. One powder making device can comprise one or more devices, and the number of the powder making devices is two in the embodiment of the invention, and the two powder making devices are symmetrically arranged on the powder making barrel seat.
The outer powder making barrel is arranged on the outer powder making barrel seat, an inclined table is arranged at the bottom of the outer powder making barrel, one side of the inclined table is lower than the other side of the inclined table, a discharge hole is formed in the outer barrel wall close to the lower side of the inclined table, and the discharge hole is connected with a discharge chute so as to facilitate discharging.
The upper portion in the powder process urceolus is provided with the powder process inner tube through bolted connection, the feeding elephant trunk has been seted up on the upper portion of powder process content, through the feeding elephant trunk to the feed in the powder process urceolus. Be provided with in the feeding elephant trunk and blast the air inlet, through blast the air inlet and pour into and blast the air to avoid the material adhesion in the powder process inner tube, make things convenient for the pan feeding of powder process inner tube and unload. The purge air inlet is preferably provided in the wall of the feed chute as a port in the wall communicating with an air line connection outside the wall to receive air from the outside. The coal pulverizing device can feed the coal sample to be ground into the coal pulverizing device through a feeding chute by means of manual operation or some external automatic feeding device, the air pipe joint can be connected into an external air pipe, and the coal pulverizing device can blow the coal pulverizing tube before the coal sample to be ground is fed into the coal pulverizing inner tube or after the coal sample in the coal pulverizing inner tube is ground and is discharged out of the coal pulverizing tube through an inclined table, so that the coal sample is prevented from remaining in the coal pulverizing tube. The line that can be connected to the air connection for supplying the medium for flushing the interior of the powder cartridge is preferably, but not exclusively, an air line. The medium entering the milling drum interior through the purge air inlet is preferably, but not exclusively, air. The function of the medium entering the powder making barrel through the purging air inlet is preferably, but not limited to, purging residual coal sample inside the powder making barrel.
The powder process ring is arranged inside the powder process inner barrel and is placed on the upper portion of a bottom cover of the powder process inner barrel, and the powder process block is arranged on the inner side of the powder process ring and is placed on the upper portion of the bottom cover of the powder process inner barrel.
When the outer rotor motor is switched on and starts to work, the outer rotor of the outer rotor motor instantly generates an eccentric torque to drive the outer shell of the outer rotor motor and all directly connected components of the whole machine, such as the coupling outer cylinder, the eccentric hammer outer cylinder 33, the powder making cylinder and the like which are connected with the outer shell of the outer rotor motor to instantly swing, so that the eccentric hammer is further excited to swing under the action of the eccentric torque, meanwhile, the instant irregular swing of the powder making inner cylinder can collide with the powder making ring and enable the powder making ring to instantly move, and the action of the powder making ring can collide with the powder making block and enable the powder making block to instantly move. To this end, all the parts of the mill are actuated and in irregular motion. Shortly thereafter, the eccentric weight gradually reaches a steady state of rotation under the traction of the eccentric moment, at which point the complete machine of the mill reaches a steady state of circumferential vibration under the reaction force of the eccentric moment of the eccentric weight. When the powder making machine is in the circumferential vibration state, the powder making ring and the powder making blocks form regular circumferential rotation motion around the axis of the powder making inner cylinder and under the action of eccentric force, the outer side of the powder making ring is tightly attached to the inner wall of the powder making inner cylinder, and the powder making blocks are tightly attached to the inner side of the powder making ring. In this motion state, the milling inner cylinder, the milling ring and the milling block have friction and rolling between each other, and the coal sample in the milling inner cylinder is ground under the mutual friction and rolling of the milling inner cylinder, the milling ring and the milling block. Because the relative movement speed among the milling inner cylinder, the milling ring and the milling block is not high, the heat conducting performance is good, the volume of the milling inner cylinder is proper, and the volume of the milled coal sample is large, the sulfur in the coal sample cannot be obviously oxidized due to heating in the milling process.
The powder making inner barrel bottom cover is hung at the bottom of the powder making inner barrel through a powder making inner barrel bottom cover opening mechanism, and materials in the powder making inner barrel can fall down onto an inclined table of the powder making outer barrel through opening the powder making inner barrel bottom cover, and then enter a discharging chute through the guide of the inclined table. Thereby realizing the discharge from the powder making device.
The execution cylinder 55 is connected with the bottom cover of the pulverizing inner barrel through a pulverizing inner barrel bottom cover opening mechanism. The bottom cover of the pulverizing inner cylinder is driven to move by the movement of the cylinder so as to open or close the bottom cover of the pulverizing inner cylinder. Preferably, the same milling unit comprises a plurality of execution cylinders 55, and the execution cylinders 55 are connected with the bottom cover of the milling inner cylinder at different positions. Therefore, the up-and-down movement of the bottom cover of the whole milling inner barrel can be more conveniently controlled.
Specifically, the execution cylinder 55 is arranged on a cylinder seat 57, the cylinder seat 57 is arranged on an upper cover of the pulverizing inner cylinder, the execution cylinder 55 comprises a cylinder rod 58, a stroke limiting nut is arranged on the cylinder rod 58, when the cylinder rod 58 moves up and down to open a bottom cover of the pulverizing inner cylinder, the forming limiting nut moves along with the movement of the cylinder rod 58, and when the stroke limiting nut touches the upper cover of the pulverizing inner cylinder, the cylinder is limited to continue to move downwards due to the supporting effect of the upper cover, so that the opening range of the bottom cover of the pulverizing inner cylinder can be controlled, the unloading speed is controlled, and the space in the outer cylinder is reasonably utilized. Further preferably, the cylinder rod 58 is provided with an external thread, and the forming limiting nut is provided with an internal thread, so that the forming limiting nut can adjust the position of the cylinder rod 58 up and down, and the opening degree of the inner cylinder bottom cover can be set according to different requirements. The lower end of the cylinder rod 58 is also connected with a bottom cover opening mechanism of the pulverizing inner cylinder in a threaded mode. The bottom cover of the inner milling barrel is hung at the bottom of the inner milling barrel by an opening mechanism of the bottom cover of the inner milling barrel.
The feeding elephant trunk sets up in powder process inner tube upper portion central point and puts, the air coupling sets up on the feeding elephant trunk, blast the air inlet and actually be the air coupling and meet the department with the feeding elephant trunk to communicate with each other with the feeding elephant trunk is inside, the sloping platform sets up the bottom at the powder process urceolus inboard, the ejection of compact elephant trunk sets up in the powder process urceolus outside to be in that one side unanimous with sloping platform inclined plane ejection of compact direction, the discharge gate actually is the department that meets of powder process urceolus and ejection of compact elephant trunk, and communicates with each other with the powder process urc.
When the outer rotor motor starts to work when a power supply is switched on, the outer rotor of the outer rotor motor firstly starts to rotate, and a large rotating torque is generated around the 12 center of the motor shaft of the outer rotor motor, so that the flour mill rotates instantly, and meanwhile, the eccentric hammer is indirectly connected with the outer rotor motor shell and rapidly rotates after obtaining a large rotating excitation force when the flour mill rotates instantly, and the balanced state of circumferential motion is quickly achieved. Because the eccentric hammer shaft is only indirectly connected with the output shaft of the outer rotor motor through the elastic coupling pad 42 and does not form a power transmission mechanism, and the bearings are arranged at the upper end and the lower end of the eccentric hammer shaft, the output shaft of the outer rotor motor is well prevented from being influenced by high-speed centrifugal force generated by the eccentric hammer, the output shaft of the outer rotor motor is prevented from being damaged, and the service life of the outer rotor motor is prolonged. In addition, the volume of the outer rotor motor is smaller, and the size of the pulverizer is further reduced.
The actuating cylinder 55 can drive the cylinder rod 58 to move up and down, so as to control the opening mechanism of the bottom cover of the milling inner barrel to move up and down, thereby realizing the opening or closing of the bottom cover of the milling inner barrel. When the bottom cover of the inner milling barrel is closed, the inner milling barrel is closed and is in a grinding state for the coal sample. When the bottom cover of the inner milling barrel is opened, the ground coal sample falls from the inner milling barrel to the inclined surface of the inclined platform under the action of the purging air blowing force from the purging air inlet or the rotating inertia force of the milling assembly or the two acting forces, so that the coal sample slips out of the milling barrel through the discharging chute into a sample bottle or other collectors under the action of the acting force of the purging air flow from the inner milling barrel or the inertia force of the milling machine or the two acting forces.
Claims (9)
1. A coal sample pulverizing device is characterized by comprising a power unit, an eccentric hammer unit, a coupling unit and a pulverizing unit;
wherein,
the power unit is used for providing power for the coal sample pulverizing device;
the eccentric hammer unit comprises an eccentric hammer shaft and an eccentric hammer body; the eccentric hammer shaft is connected with the power output end of the power unit and is driven by the power unit to rotate; the eccentric hammer shaft is eccentrically arranged on the eccentric hammer and rotates around the eccentric hammer shaft;
the milling unit comprises a milling outer cylinder, a milling inner cylinder and a discharge hole, and the milling outer cylinder is fixedly arranged above the eccentric hammer unit; the discharging guide device is arranged at the bottom of the milling outer barrel and used for guiding unloaded materials to the discharging port, the discharging chute is communicated with the discharging port, and coal samples after milling are discharged through the discharging chute; the powder making inner cylinder is arranged in the powder making outer cylinder and comprises a powder making block, a powder making ring and a powder making inner cylinder opening and closing mechanism; the powder making block and the powder making ring are movably arranged in the powder making inner barrel, and the powder making ring is arranged at the periphery of the powder making block; the powder making block and the powder making ring are movably arranged in the powder making inner barrel, and the powder making block is arranged in the powder making ring.
2. The apparatus of claim 1, wherein the pulverizing inner cylinder opening and closing mechanism comprises an actuating cylinder 55, a pulverizing inner cylinder bottom cover opening and closing member, and a travel limiting nut, wherein a cylinder rod 58 of the actuating cylinder 55 is connected with the pulverizing inner cylinder bottom cover opening and closing member, the pulverizing inner cylinder bottom cover opening and closing member is connected with the pulverizing inner cylinder bottom cover, and the actuating cylinder 55 is actuated to drive the pulverizing inner cylinder wall to move so as to open and close; the stroke limiting nut is arranged on the air cylinder rod 58 and can adjust the position of the air cylinder rod 58 up and down; when the cylinder rod 58 moves, the stroke control nut limits the range of movement of the cylinder rod 58 by the stop action of the stop.
3. The apparatus of claim 1, wherein the power plant is an external rotor motor.
4. The apparatus of claim 1 or 3, wherein the mechanism by which the eccentric hammer shaft is connected to the power output of the power unit comprises a coupling unit; the coupling unit comprises an elastic coupling pad, a first coupling and a second coupling, the upper end of the coupling unit is provided with the elastic coupling pad, the elastic coupling pad is used for connecting the lower end of the eccentric hammer shaft with the first coupling on the upper side, and the second coupling which is arranged below the eccentric hammer shaft is connected with an output shaft of the outer rotor motor through the key; the first coupler and the second coupler are fixedly connected.
5. The apparatus of claim 1 wherein the milling inner drum further comprises a purging medium inlet in communication with the milling inner drum interior through which purging medium is supplied to remove residual coal sample from the inner and outer drums.
6. The apparatus of claim 5, wherein the purging medium is a gas, and the milling inner drum further comprises an inlet chute for supplying material to the interior of the milling inner drum; the flushing medium inlet is arranged in the feed chute.
7. The device of claim 6, wherein the powder making cylinder bottom cover is moved by the action of the execution cylinder to open and close.
8. The apparatus of claim 7, wherein the number of actuating cylinders comprises a plurality of actuating cylinders coupled to a plurality of locations on the bottom head.
9. The apparatus of claim 6 or 7, wherein the discharging inner cylinder is arranged at the top in the discharging outer cylinder, the bottom of the milling outer cylinder is provided with a sloping platform, the height of one side of the sloping platform is lower than that of the other side, and a discharge hole is formed in the side wall of the milling outer cylinder adjacent to the lower side of the sloping platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324709.7A CN104069919B (en) | 2014-07-09 | 2014-07-09 | Coal sample pulverizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324709.7A CN104069919B (en) | 2014-07-09 | 2014-07-09 | Coal sample pulverizing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104069919A true CN104069919A (en) | 2014-10-01 |
| CN104069919B CN104069919B (en) | 2017-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410324709.7A Expired - Fee Related CN104069919B (en) | 2014-07-09 | 2014-07-09 | Coal sample pulverizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104069919B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106391256A (en) * | 2016-10-28 | 2017-02-15 | 镇江市科瑞制样设备有限公司 | Powder making machine for full-automatic monohydrallite sample preparation system |
| CN106391257A (en) * | 2016-10-28 | 2017-02-15 | 镇江市科瑞制样设备有限公司 | Alcohol spraying device for pulverizer |
| CN107855198A (en) * | 2017-11-17 | 2018-03-30 | 远光共创智能科技股份有限公司 | A kind of double slit work mesh sieve ring abrasive structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106391257A (en) * | 2016-10-28 | 2017-02-15 | 镇江市科瑞制样设备有限公司 | Alcohol spraying device for pulverizer |
| CN106391257B (en) * | 2016-10-28 | 2019-04-26 | 镇江市科瑞制样设备有限公司 | A kind of flour mill alcohol flusher |
| CN106391256B (en) * | 2016-10-28 | 2019-07-26 | 镇江市科瑞制样设备有限公司 | A kind of full-automatic sample-preparing system flour mill of bauxite |
| CN107855198A (en) * | 2017-11-17 | 2018-03-30 | 远光共创智能科技股份有限公司 | A kind of double slit work mesh sieve ring abrasive structure |
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| CN104069919B (en) | 2017-01-25 |
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