CN202715461U - Liquid nitrogen refrigeration low temperature crushing device - Google Patents
Liquid nitrogen refrigeration low temperature crushing device Download PDFInfo
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- CN202715461U CN202715461U CN201220446004.9U CN201220446004U CN202715461U CN 202715461 U CN202715461 U CN 202715461U CN 201220446004 U CN201220446004 U CN 201220446004U CN 202715461 U CN202715461 U CN 202715461U
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Abstract
The utility model provides a liquid nitrogen refrigeration low temperature crushing device which can guarantee safety during a using process and is convenient to operate and use and is low in operational energy consumption. The liquid nitrogen refrigeration low temperature crushing device comprises a storage bin, a screw feeder, a cryogenic grinding machine and a cyclone separator, wherein the storage bin, the screw feeder, the cryogenic grinding machine and the cyclone separator are communicated with each other in sequence. A liquid nitrogen sprayer is arranged on a cylinder wall of the screw feeder, and the liquid nitrogen sprayer is communicated with liquid nitrogen source. A communication pipeline is arranged between an air outlet of the cyclone separator and the screw feeder. During a material crushing process, the cold source of the liquid nitrogen refrigeration low temperature crushing device forms a closed loop circulating system and enables energy sources to be sufficiently used and saves energy consumption. In addition, the liquid nitrogen refrigeration low temperature crushing device can regulate the cooling temperature of the material during the crushing process according to the brittle point temperature of the material, chooses the best crushing temperature and reduces the energy consumption.
Description
Technical field
The utility model relates to a kind of low-temperature crushing device, specifically, relates to a kind of liquid nitrogen refrigerating that utilizes, under ultra-low temperature surroundings, to heat sensitive material or be at normal temperatures the liquid nitrogen refrigerating low-temperature crushing device of pulverizing than the material of obdurability.
Background technology
As the extension that existing air cooling is pulverized, the liquid nitrogen refrigerating low-temperature crushing device is because the pulverization process temperature is lower, and the material of comminution process tool break to(for) the stronger difficulty of toughness has great advantage, and such low-temperature crushing device is used widely.
Chinese patent application 200910008454.2 disclosed a kind of super-low temperature pulverizators for example, by the barrel in pulverizing chamber the liquid nitrogen shower nozzle is set, whole crushing process is carried out under low temperature environment, and the material that guarantees heat sensitive material or be at normal temperatures toughness can effectively be pulverized.
Chinese patent application 200510038819.8 provides another kind of super-low temperature pulverizator, its charging aperture place at feeding screw arranges bin stock precooling cylinder, at bin stock precooling cylinder barrel the liquid nitrogen shower nozzle is set, make material before being admitted to pulverizer namely by pre-cooled, thereby effectively pulverized at low temperatures.
But technique scheme does not all recycle the technology consideration that provides complete to the safety of liquid nitrogen, can't guarantee the safe handling of whole crushing system, and can't guarantee the low energy consumption operation.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of and can guarantee in use procedure safety, and is easy for operation, and the low liquid nitrogen refrigerating low-temperature crushing device of operation energy consumption.
The utility model comprises the feed bin that order is communicated with, screw(-type) feeder, and low temperature grinding machine and cyclone separator are provided with the liquid nitrogen shower nozzle on the barrel of described screw feeder, and the liquid nitrogen shower nozzle is communicated with liquid nitrogen source; Between the air outlet of described cyclone separator and the screw(-type) feeder connecting pipe is set.
Between the discharging opening of described feed bin and the charging aperture of screw(-type) feeder air valve is set, leaks gas from feed bin behind the liquid nitrogen gasification preventing.In addition, described feed bin can arrange the magnetic separation parts, is used for sorting the irony foreign material that may exist in the material, prevents from entering the low temperature mill grinding machine is produced destruction.
Described screw(-type) feeder is from the 3-5 ° of setting that be inclined upwardly of its charging aperture to discharging opening, so that material obtains enough coolings.
In order to make things convenient for Whole Equipment to install, and fully reach the material cooling effect, described screw(-type) feeder can be up and down plural serial stage setting.
On the connecting pipe of described liquid nitrogen shower nozzle and liquid nitrogen source control valve is set, this control valve is regulated action by the temperature control system that is arranged on screw(-type) feeder or low temperature grinding machine.Enter screw(-type) feeder by control valve control liquid nitrogen during use, carry out freezing to material.Screw(-type) feeder is fed forward material by rotation, and the while liquid nitrogen gets off from its top spray and carries out freezing to material.
The rotating speed of screw(-type) feeder can be regulated by frequency converter, at the Power Drive Unit of screw(-type) feeder the screw(-type) feeder frequency converter is set, and one can regulate feeding coal, and two can regulate the material cooling time.Especially to control to adjust well the spray flux of liquid nitrogen, make low temperature grinding machine entrance material be cooled to best brittle temperature.
Low temperature mill frequency converter is set between described low temperature grinding machine and the Power Drive Unit.Material after freezing is transported to the low temperature mill through screw(-type) feeder and pulverizes, and utilizes frequency modulator control mill speed to control fineness and the output of pulverizing.The pack encapsulation but the grading plants such as setting example such as screen cloth in the low temperature grinding machine, thin material powder collection get up, the thick low temperature grinding machine that enters re-starts freezing pulverizing.
Be the material after effectively recovery is pulverized, and be convenient to recycling of cold air that behind the air outlet of described cyclone separator sack cleaner is set, the air outlet of cyclone separator is through sack cleaner and screw(-type) feeder pipeline communication.
The utility model also arranges TT﹠C system, comprises temperature display meter and sensor, and measurement and control requirement to finish the liquid nitrogen reducing mechanism guarantee the safe operation of single unit system.
The utility model is take liquid nitrogen as low-temperature receiver, realized that by cooling embrittlement under the low temperature is easily behind the pulverizing state by comminuting matter, enter and pass through impeller High Rotation Speed, material and blade, fluted disc in the low temperature grinding machine cavity, mutual repeated stock between material and the material, collision is sheared, under the comprehensive functions such as friction, reach crushing effect: simultaneously, the cold air major part is returned feed bin and is recycled.
The utility model is in the crushing material process, and its low-temperature receiver forms a closed circuit circulatory system, and the energy is fully used, save energy consumption: and can be according to the brittle point temperature of material, the best temperature of pulverizing is selected in its temperature cooling of regulation and control in crushing process, reduces energy consumption.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and the specific embodiments:
Fig. 1 is the utility model system architecture schematic diagram.
Among the figure:
1-magnetic separation parts, 2-push-pull valve, 3-feed bin, the 4-shocking feeder, 5-liquid nitrogen container, 6-butterfly valve, the 7-pulsed jet cloth filter, 8-cyclone separator, 9-low temperature grinding machine, 10-low temperature grinding machine motor, the 11-screw(-type) feeder, 12-stop valve, 13-air valve, 14-air valve motor, 15-screw(-type) feeder motor.
The specific embodiment
As shown in Figure 1, the utility model comprises feed bin 3, screw(-type) feeder 11, low temperature grinding machine 9, cyclone separator 8 and pulsed jet cloth filter 7, and be communicated with successively, wherein: screw(-type) feeder 11 is communicated with liquid nitrogen container 5 by stop valve 12, and cyclone separator 8 and pulsed jet cloth filter 7 are communicated with through the charging aperture of bypass with low temperature grinding machine 9 in addition by butterfly valve 6; The front portion of feed bin 3 arranges magnetic separation parts 1, with metal species impurity not to be crushed in the material separating; Also assist between screw(-type) feeder 11 and the feeding warehouse 3 and be provided with shocking feeder 4, smooth and easy to guarantee feed, between shocking feeder 4 and the feed bin 3 push-pull valve 2 is set, between screw(-type) feeder 11 and the shocking feeder 4 air valve 13 is set; Air valve 13, screw(-type) feeder 11 and low temperature grinding machine 9 are driven by air valve motor 14, screw(-type) feeder motor 15 and low temperature grinding machine motor 10 respectively, on screw(-type) feeder motor 15 and the low temperature grinding machine motor 10 frequency converter are set, and regulate corresponding rotating speed.
Take the PA crushing material as example, during practical operation, close first air valve 13, slowly open the stop valve 12 of liquid nitrogen container, give system's cooling, when screw(-type) feeder 11 exit temperature reached-50 ℃, startup air valve 13, screw(-type) feeder 11 carried out feeding, start low temperature grinding machine 10, and regulate about the turn up 4500r/min of low temperature grinding machine 10; Regulate the inlet of liquid nitrogen, make the screw(-type) feeder outlet temperature continue to drop to about-150 ℃, material carries out the 10 interior pulverizing of low temperature grinding machine after cooling; Material after the pulverizing is sized, and the thick low temperature grinding machine that enters re-starts freezing pulverizing, and thin material powder is expected that by in negative pressure successively suction cyclone separator 8 and the pulsed jet cloth filter 7 gas separates, and collects the pack encapsulation.
In whole operating process, be injected into the low-temperature receiver in the system, from screw(-type) feeder in the low temperature grinding machine, then along with crushing rear material to cyclone separator and pulsed jet cloth filter, after material gas separates, be sent back to conveying worm through connecting pipe again, form a closed circulation, this decrease the use amount of liguefied nitrogen.
In the operation, can suitably adjust the rotating speed of screw(-type) feeder and control inlet amount according to the complexity of crushing material, make product order number after the pulverizing in acceptability limit.
Claims (9)
1. a liquid nitrogen refrigerating low-temperature crushing device comprises the feed bin that order is communicated with, screw(-type) feeder, and low temperature grinding machine and cyclone separator is characterized in that: be provided with the liquid nitrogen shower nozzle on the barrel of described screw(-type) feeder, the liquid nitrogen shower nozzle is communicated with liquid nitrogen source; Between the air outlet of described cyclone separator and the screw(-type) feeder connecting pipe is set.
2. liquid nitrogen cryogenics reducing mechanism according to claim 1 is characterized in that: between the discharging opening of described feed bin and the charging aperture of screw(-type) feeder air valve is set.
3. liquid nitrogen cryogenics reducing mechanism according to claim 2, it is characterized in that: described feed bin is provided with the magnetic separation parts.
4. liquid nitrogen cryogenics reducing mechanism according to claim 1 is characterized in that: described screw(-type) feeder is from the 3-5 ° of setting that be inclined upwardly of its charging aperture to discharging opening.
5. liquid nitrogen cryogenics reducing mechanism according to claim 4 is characterized in that: plural serial stage setting about described screw(-type) feeder can be.
6. liquid nitrogen cryogenics reducing mechanism according to claim 1, it is characterized in that: the Power Drive Unit at screw(-type) feeder arranges the screw(-type) feeder frequency converter.
7. liquid nitrogen cryogenics reducing mechanism according to claim 1 is characterized in that: low temperature mill frequency converter is set on the Power Drive Unit of described low temperature grinding machine.
8. according to claim 1 to the described liquid nitrogen cryogenics reducing mechanism of 7 any one claim, it is characterized in that: behind the air outlet of described cyclone separator sack cleaner is set, the air outlet of cyclone separator is through sack cleaner and screw(-type) feeder pipeline communication.
9. according to claim 1 to the described liquid nitrogen cryogenics reducing mechanism of 7 any one claim, it is characterized in that: on the connecting pipe of described liquid nitrogen shower nozzle and liquid nitrogen source control valve is set, this control valve is regulated action by the temperature control system that is arranged on screw(-type) feeder or low temperature grinding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220446004.9U CN202715461U (en) | 2012-09-04 | 2012-09-04 | Liquid nitrogen refrigeration low temperature crushing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220446004.9U CN202715461U (en) | 2012-09-04 | 2012-09-04 | Liquid nitrogen refrigeration low temperature crushing device |
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| CN202715461U true CN202715461U (en) | 2013-02-06 |
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| CN201220446004.9U Expired - Lifetime CN202715461U (en) | 2012-09-04 | 2012-09-04 | Liquid nitrogen refrigeration low temperature crushing device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536960A (en) * | 2015-11-27 | 2016-05-04 | 金堆城钼业股份有限公司 | Preparation system and preparation method of low-oxygen ultrafine molybdenum disulfide |
| CN105597900A (en) * | 2016-01-05 | 2016-05-25 | 临沂奥星化工有限公司 | Chlorinated polyethylene smashing system |
| CN106732985A (en) * | 2017-01-13 | 2017-05-31 | 北新集团建材股份有限公司 | A kind of control method of ball mill |
| CN107413487A (en) * | 2017-07-20 | 2017-12-01 | 广东友为实业有限公司 | Fresh crushing material method and its equipment |
| CN108816343A (en) * | 2018-05-04 | 2018-11-16 | 芜湖良匠机械制造有限公司 | A kind of High Precision Low Temperature grinding device for the production of glass substrate rack |
| CN109382194A (en) * | 2018-11-30 | 2019-02-26 | 天津威特生物医药有限责任公司 | Thallus sample broke mechanism |
| CN110976028A (en) * | 2019-11-30 | 2020-04-10 | 江阴市龙昌机械制造有限公司 | Liquid-spraying type efficient energy-saving liquid nitrogen freezing pulverizer |
| CN111998584A (en) * | 2020-08-21 | 2020-11-27 | 阜阳九珍食品有限公司 | Cooling arrangement is used in production of efficient seasoning |
-
2012
- 2012-09-04 CN CN201220446004.9U patent/CN202715461U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536960A (en) * | 2015-11-27 | 2016-05-04 | 金堆城钼业股份有限公司 | Preparation system and preparation method of low-oxygen ultrafine molybdenum disulfide |
| CN105536960B (en) * | 2015-11-27 | 2018-09-07 | 金堆城钼业股份有限公司 | A kind of preparation system and preparation method thereof of the ultra-fine molybdenum disulfide of hypoxemia |
| CN105597900A (en) * | 2016-01-05 | 2016-05-25 | 临沂奥星化工有限公司 | Chlorinated polyethylene smashing system |
| CN105597900B (en) * | 2016-01-05 | 2018-04-27 | 临沂奥星化工有限公司 | A kind of haloflex crushing system |
| CN106732985A (en) * | 2017-01-13 | 2017-05-31 | 北新集团建材股份有限公司 | A kind of control method of ball mill |
| CN107413487A (en) * | 2017-07-20 | 2017-12-01 | 广东友为实业有限公司 | Fresh crushing material method and its equipment |
| CN108816343A (en) * | 2018-05-04 | 2018-11-16 | 芜湖良匠机械制造有限公司 | A kind of High Precision Low Temperature grinding device for the production of glass substrate rack |
| CN109382194A (en) * | 2018-11-30 | 2019-02-26 | 天津威特生物医药有限责任公司 | Thallus sample broke mechanism |
| CN110976028A (en) * | 2019-11-30 | 2020-04-10 | 江阴市龙昌机械制造有限公司 | Liquid-spraying type efficient energy-saving liquid nitrogen freezing pulverizer |
| CN111998584A (en) * | 2020-08-21 | 2020-11-27 | 阜阳九珍食品有限公司 | Cooling arrangement is used in production of efficient seasoning |
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Granted publication date: 20130206 |