CN201815333U - Cooling raymond mill - Google Patents
Cooling raymond mill Download PDFInfo
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- CN201815333U CN201815333U CN2010202738830U CN201020273883U CN201815333U CN 201815333 U CN201815333 U CN 201815333U CN 2010202738830 U CN2010202738830 U CN 2010202738830U CN 201020273883 U CN201020273883 U CN 201020273883U CN 201815333 U CN201815333 U CN 201815333U
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Abstract
The utility model relates to a cooling Raymond mill comprising a main machine, an analyzer, a cyclone collector and a fan, wherein an air return pipeline between the cyclone collector and the fan is internally provided with a circulating air flow cooling device which comprises certain quantity of heat exchange branch pipes, a cooling cavity, an air inlet cavity, an air outlet cavity and a casing; the heat exchange branch pipes are vertically distributed in the cooling cavity, and an upper port and a lower port of each heat exchange branch pipe are respectively communicated with the air inlet cavity and the air outlet cavity; the air inlet cavity is communicated with the cyclone collector via an air pipe, and the air outlet cavity is communicated with the fan via an air pipe; the sum of the cross sections of all the heat exchange branch pipes are larger than or equal to the cross section of the air pipe between the cyclone collector and the fan; and the upper part of the casing is provided with a coolant outlet communicated with the cooling cavity, and the lower part is communicated with a coolant inlet communicated with the cooling cavity. The cooling Raymond mill has obvious cooling effect and greatly improved milling efficiency, and is suitable for grinding of materials with the melting point temperature of lower than 70 DEG C; and the quality of powders made by the mill is obviously improved.
Description
Technical field
The utility model relates to a kind of powder manufacturing apparatus, is specifically related to a kind of Raymond mill that has the circulated air cooling device.
Background technology
Raymond mill (Raymond Mill) claims again to revolve roll-type (pendulum roller type) disc mill, is mainly used in grinding of materials such as nonmetallic ore.The Raymond mill stable performance, adaptability is strong, cost performance is high.Raymond mill operation principle (referring to Fig. 1): during work, the charging aperture (6) of the fragment slave case side that needs are pulverized adds grinding roller chamber (4), dependence is suspended on grinding roller (5) device on the main frame plum blossom frame, around the revolution of main shaft (1) axis, own rotation simultaneously, action of centrifugal force during owing to rotation, grinding roller (5) is swing outwards, press in bull ring, make perching knife (2) scoop up material and deliver between grinding roller (5) and the bull ring, reach the purpose of comminuting matter because of the rolling compaction of grinding roller (5); Selection by winnowing process: behind the improved grinding, blower fan (19) is blown into wind in main frame (3) shell, blow afloat powder, analytical engine (8) through placing the grinding chamber top carries out sorting, coarse grained material falls into grinding chamber again and refaces, what the order number met the specification enters cyclone collector (12) with air-flow, collects after meal outlet enters feed bin (14); Distinguished and admirable backwind tube (13) by willy-willy gatherer (12) upper end returns blower fan (19), gas circuit is a circulating current, and being negative pressure state in backwind tube flows, the air quantity of circulation wind path increases valve (18) the control flow of part in the middle of blower fan and main frame (3), discharge via residual air escape pipe (17), enter whirly gatherer (15), a spot of powder enters small feed bin (16), and tail gas is purified by sack cleaner (11).
Because circulated air is through the grinding roller chamber, when carrying powder, a large amount of heat energy that produce when taking away grinding roller and milling, the part heat has has only scattered and disappeared in circulation line.Along with the carrying out of work, the temperature of recyclegas is more and more higher, and heat constantly gathers in milling in cooling grinding roller chamber, causes the continuous lifting of grinding machine and recyclegas temperature, until with the roller locking.The test for preparing the used powder of pressing graphite products with common Raymond mill shows, when Raymond mill work to 50 minute, the locking of Raymond mill roller, the grinding roller chamber is measured temperature and is up to 105 ℃, the mixed material of bituminous or resin promptly can become pasty state under this situation, roller and working chamber are bonded together, can't operate as normal.And for these fusing point/softening points the material of composition malleable under the low or high temperature, be difficult to use Raymond mill especially and carry out a large amount of pulverizing abrasive dusts.
As in the production process of graphite products, be to be raw material with charcoal graphite (petroleum coke, pitch coke etc.), through behind abrasive dust, adding a certain proportion of binding agent (pitch, artificial resin etc.) again mixes and to pinch, through after rolling sheet, cooling, broken process, abrasive dust (can repeat this step as required) enters down the road molding procedure then once more.The softening point of above-mentioned binding agent is generally all lower, and between 70～90 ℃, the artificial resin softening point is about 100 ℃ as the mid temperature pitch softening point.When this just required once more abrasive dust, the temperature when material is pulverized must be controlled at below 65 ℃, could guarantee that material does not become half pasty state or pastel.
In the sector, common milling process once more mostly is to adopt industrial omnipotent mill (having another name called pulverizer) to carry out powder process: roll sheet and enter omnipotent mill abrasive dust, air-flow by grinding machine self generation, carry material and enter cyclone dust collectors, tail gas is through the sack cleaner dedusting, and whirlwind bottom powder sieves through screening machine, oversize is back to the mill import, circulates continuously with the fragment of even adding.Owing to advance, air-out does not circulate, cold air is taken away a large amount of heats that produce when broken, device interior and temperature of charge are low, though the pulverizing requirement of low-melting-point material, but production efficiency is extremely low, energy consumption is big, (Zhengzhou mining machinery Group Co.,Ltd) is example with 650 type pulverizers, if produce 200 order secondary powder, output is 300kg/h only, and the output of producing 320 order secondary powder is lower, and ton output energy consumption is big, and the granularity of minus mesh inhomogeneous (surpassing the big greater than the sieve number fine powder content of technological requirement) is difficult to satisfy production high strength, high density, the technological requirement of high strength graphite goods.
The utility model content
The technical problems to be solved in the utility model provides a kind of cooling Raymond mill applicable to low-melting-point material pulverizing abrasive dust, utilizes the used powder production efficiency of this device preparation pressing graphite products height, and is with low cost.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of cooling Raymond mill, comprise main frame, analyzer, cyclone collector, blower fan, each several part constitutes the circulation wind path by the airduct connection successively, in the return air pipeline between described cyclone collector and blower fan the cooling device that is used for the cool cycles air-flow is installed also, described cooling device comprises the heat exchange arm of some, cooling chamber, inlet chamber, outlet chamber, housing, described heat exchange arm is distributed in the cooling chamber vertically, on it, lower port is communicated with inlet chamber respectively, outlet chamber, described inlet chamber is communicated to cyclone collector via airduct, described outlet chamber is communicated to blower fan via airduct, the sectional area sum of all heat exchange arms is 1～4 times of sectional area of airduct between cyclone collector and the blower fan, described housing top is provided with the refrigerant exit that is communicated with cooling chamber, and its underpart is provided with the refrigerant import that is communicated with cooling chamber.
Described heat exchange arm is the thin-wall metal straight tube.
In described cooling chamber, be distributed with spiral helicine deflector, purpose make enter cooling chamber current from bottom to top temperature contact with the heat exchange arm equably, prevent that refrigerant from forming local refrigerant flow short-circuit in cooling chamber, avoid causing localized hyperthermia.
The outer chimeric heat dissipation metal fin that has of described heat exchange arm.
Described refrigerant is cold water or cold air.
Be outside equipped with the cooling jacket of further increase cooling effect at the main grinding roller cavity shell of described main frame, this cooling jacket is provided with corresponding refrigerant import and outlet.
Described cooling Raymond mill also comprises whirly gatherer, small-sized deduster, and the Waste gas outlet of described blower fan is communicated with the whirly gatherer by the residual air escape pipe, is communicated with small-sized deduster by offgas duct again.
The above-mentioned cooling device of stating the cooling Raymond mill is a refrigerant to be lower than 20 ℃ cold water, and cold water is controlled to be 90～125mm/s at the cooling chamber mean flow rate, makes cold water and cooling tubulation fully carry out heat exchange.Refrigerant can be regulated and control according to type, the specific heat of use refrigerant and the cooling effect that will arrive at the flow velocity of cooling chamber, or summarizes in process practice and draw.
The utlity model has actively useful effect:
1. the design of the utility model cooling Raymond mill cooling structure is unique, it is vertical or vertically distribute to be installed on heat exchange arm in the cooling device in the return air pipeline between cyclone collector and the blower fan, can prevent effectively that the powder in the return air from falling on the heat exchange branch pipe wall, avoid the cooling effect variation (if not the heat exchange arm vertically is installed, not only easily cause powder to fall to the heat exchange branch pipe wall, heat exchange arm actual internal area is reduced, cause windage big, but long-play even blocking pipe); The interior circulation of heat exchange arm total sectional area both can reduce the return air windage greater than the sectional area of backwind tube, guaranteed that the return air circulation is unobstructed, can guarantee that again heat exchange area is enough big, and reduced wind speed, increase heat exchanger time, so that the return air cooling is more abundant;
2. in cooling chamber, deflector or spoiler be set further, can prevent the non-uniform temperature phenomenon that refrigerant (as cold water) causes at cooling chamber " short circuit ", make refrigerant from bottom to top with heat exchange arm even contact, cooling.
3. the utility model cooling Raymond mill cooling effect is obvious, and abrasive dust efficient significantly improves: adopt cooling Raymond mill described in the utility model, but be used for powder process continuous 24 hours of every day, main grinding roller cavity temperature 50～70 ℃ of scopes, satisfies the operating mode instructions for use all the time; And when adopting non-cooling Raymond mill; because the friction of main grinding roller chamber, extruding; the a large amount of heat of inner generation; cause temperature of charge constantly to raise, under 30 ℃ of temperature, move 1 little after; the inner chamber maximum temperature reaches more than 100 ℃; for the material of low melting point/softening point, often cause continuing producing, must shut down and wait for that tearing machine open after nature cools off clears up.
4. the utility model cooling Raymond mill is lower than 70 ℃ the material or the pulverizing abrasive dust of the following material of pulverizing (as composition malleable under the high temperature) of unsuitable high temperature applicable to melting temperature, has further widened the scope of application of Raymond mill.
Description of drawings
Fig. 1 is a kind of Raymond mill structural representation of routine;
Fig. 2 is the structural representation of the utility model cooling Raymond mill;
Fig. 3 is the cross-sectional view of cooling device among Fig. 2.
1 is main shaft among the figure, and 2 is perching knife, and 3 is main frame, 4 main grinding roller chambeies, 5 is grinding roller, 6 is charging aperture, 7 is the analytical engine power shaft, and 8 is analytical engine, and 9 is the analytical engine blade, 10 is ventilation duct, and 11 is sack cleaner, and 12 is cyclone collector, 13 is backwind tube, and 14 is feed bin, and 15 is the whirly gatherer, 16 is small feed bin, and 17 is the residual air escape pipe, and 18 is slide valve, 19 is blower fan, and 20 is offgas duct, and 21 is cooling device, 22 is the cooling device delivery port, and 23 is the cooling device water inlet, and 24 is cooling water jecket, 25 is the cooling water jecket water inlet, and 26 is the cooling water jecket delivery port, and 27 is radiating fin, 28 air inlets, 29 is inlet chamber, 30 are the heat exchange arm, 31 helical form deflectors, 32 is cooling chamber, 33 is outlet chamber, 34 is the gas outlet, and 35 is housing.
The specific embodiment
1 one kinds of cooling Raymond mills of embodiment, referring to Fig. 1, Fig. 2, Fig. 3, comprise main frame 3, analytical engine 8, cyclone collector 12, blower fan 19, each several part is successively by ventilation duct 10, backwind tube 13 is communicated with formation circulation wind path, the cooling device 21 that is used for the cool cycles air-flow also is installed in the backwind tube 13 between described cyclone collector 12 and blower fan 19, described cooling device 21 comprises 62 heat exchange arms 30, cooling chamber 32, helical form deflector 31, inlet chamber 29, outlet chamber 33, housing 35,62 heat exchange arms are vertical, be arranged in equably on the multilayer concentric circumference in the cooling chamber 32, on it, lower port is communicated with inlet chamber 29 respectively, outlet chamber 33, the specification of described heat exchange arm 30 adopts Φ 55mm, the thin-wall copper pipe of thick 2mm, the outer chimeric aluminium matter radiating fin 27 (only partly illustrating among the figure to draw) that has of each heat exchange arm, fin thickness 0.8mm highly is 5mm; Spiral helicine deflector 31 is located in the cooling chamber so that the current that enter cooling chamber 32 from bottom to top temperature contact with each heat exchange arm equably; Described inlet chamber 29 is communicated to cyclone collector 12 via airduct, described outlet chamber 33 is communicated to blower fan 19 via airduct, the sectional area sum of all heat exchange arms is 1.6 times of sectional area of the airduct 13 between cyclone collector 12 and the blower fan 19, described housing 35 tops are provided with the cooling device delivery port 22 that is communicated with cooling chamber 32, and its underpart is provided with the cooling device water inlet 23 that is communicated with cooling chamber; Also be provided with cooling water jecket 24 outside the main grinding roller cavity shell of described main frame 3, this cooling water jecket 24 is provided with corresponding cooling water jecket water inlet 25 and cooling water jecket delivery port 26; This cooling Raymond mill also comprises whirly gatherer 15, sack cleaner 11, and the residual air floss hole of described blower fan 19 is communicated with whirly gatherer 15 by residual air escape pipe 17, is communicated with sack cleaner 11 by offgas duct 20 again.
2 one kinds of cooling Raymond mills of embodiment, substantially the same manner as Example 1, difference is: do not establish cooling jacket outside the main grinding roller cavity shell of main frame; The heat exchange arm is a thin-wall aluminium pipe; The sectional area sum of all heat exchange arms is 3 times of sectional area of the airduct between cyclone collector 12 and the blower fan 19.
3 one kinds of cooling Raymond mills of embodiment, substantially the same manner as Example 1, difference is: do not establish the helical form deflector in cooling chamber; The sectional area sum of all heat exchange arms is 2 times of sectional area of the airduct between cyclone collector 12 and the blower fan 19.
Claims (6)
1. cooling Raymond mill, comprise main frame, analyzer, cyclone collector, blower fan, each several part constitutes the circulation wind path by the airduct connection successively, it is characterized in that, in the return air pipeline between described cyclone collector and blower fan the cooling device that is used for the cool cycles air-flow is installed also, described cooling device comprises the heat exchange arm of some, cooling chamber, inlet chamber, outlet chamber, housing, described heat exchange arm is distributed in the cooling chamber vertically, on it, lower port is communicated with inlet chamber respectively, outlet chamber, described inlet chamber is communicated to cyclone collector via airduct, described outlet chamber is communicated to blower fan via airduct, the sectional area sum of all heat exchange arms is 1～4 times of sectional area of airduct between cyclone collector and the blower fan, described housing top is provided with the refrigerant exit that is communicated with cooling chamber, and its underpart is provided with the refrigerant import that is communicated with cooling chamber.
2. cooling Raymond mill according to claim 1 is characterized in that, described heat exchange arm is the thin-wall metal straight tube.
3. cooling Raymond mill according to claim 1 is characterized in that, the outer chimeric heat dissipation metal fin that has of described heat exchange arm.
4. cooling Raymond mill according to claim 1 is characterized in that, is provided with spiral helicine deflector in described cooling chamber.
5. cooling Raymond mill according to claim 1 is characterized in that, is outside equipped with this cooling jacket of cooling jacket at the main grinding roller cavity shell of described main frame and is provided with corresponding refrigerant import and outlet.
6. cooling Raymond mill according to claim 1, it is characterized in that, described cooling Raymond mill also comprises whirly gatherer, small-sized deduster, and the floss hole of described circulating current is communicated with the whirly gatherer by the residual air escape pipe, is communicated with small-sized deduster by offgas duct again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202738830U CN201815333U (en) | 2010-07-28 | 2010-07-28 | Cooling raymond mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202738830U CN201815333U (en) | 2010-07-28 | 2010-07-28 | Cooling raymond mill |
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| Publication Number | Publication Date |
|---|---|
| CN201815333U true CN201815333U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202738830U Expired - Lifetime CN201815333U (en) | 2010-07-28 | 2010-07-28 | Cooling raymond mill |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905186A (en) * | 2010-07-28 | 2010-12-08 | 河南天利碳素材料有限公司 | Cooling Raymond mill and preparation method of powder for pressing graphite products |
| CN102247911A (en) * | 2011-06-20 | 2011-11-23 | 张婉菁 | Nano water volatile pearl processing method and device |
| TWI417142B (en) * | 2011-06-08 | 2013-12-01 | ||
| CN103736572A (en) * | 2013-12-31 | 2014-04-23 | 昆明特康科技有限公司 | Circulating fluidized bed equipment with drying, crushing and sterilizing functions |
| CN103861705A (en) * | 2012-12-13 | 2014-06-18 | 浙江力普粉碎设备有限公司 | Complete production line for crushing and collecting |
| CN105013598A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Raymond mill system with draught fan free of dust retention |
| CN105013592A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Air suction type grinder for polygonum cuspidatum |
| CN109718937A (en) * | 2017-10-31 | 2019-05-07 | 阿尔法（江苏）重工科技有限公司 | Coal pulverizer emery wheel |
-
2010
- 2010-07-28 CN CN2010202738830U patent/CN201815333U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905186A (en) * | 2010-07-28 | 2010-12-08 | 河南天利碳素材料有限公司 | Cooling Raymond mill and preparation method of powder for pressing graphite products |
| TWI417142B (en) * | 2011-06-08 | 2013-12-01 | ||
| CN102247911A (en) * | 2011-06-20 | 2011-11-23 | 张婉菁 | Nano water volatile pearl processing method and device |
| CN103861705A (en) * | 2012-12-13 | 2014-06-18 | 浙江力普粉碎设备有限公司 | Complete production line for crushing and collecting |
| CN103736572A (en) * | 2013-12-31 | 2014-04-23 | 昆明特康科技有限公司 | Circulating fluidized bed equipment with drying, crushing and sterilizing functions |
| CN103736572B (en) * | 2013-12-31 | 2015-11-18 | 昆明特康科技有限公司 | There is the circulating fluidised bed apparatus of drying, pulverizing and sterilizing function |
| CN105013598A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Raymond mill system with draught fan free of dust retention |
| CN105013592A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Air suction type grinder for polygonum cuspidatum |
| CN109718937A (en) * | 2017-10-31 | 2019-05-07 | 阿尔法（江苏）重工科技有限公司 | Coal pulverizer emery wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20120208 |