CN203671143U - Air flow mill discharging opening abrasion-resisting structure - Google Patents
Air flow mill discharging opening abrasion-resisting structure Download PDFInfo
- Publication number
- CN203671143U CN203671143U CN201320888943.3U CN201320888943U CN203671143U CN 203671143 U CN203671143 U CN 203671143U CN 201320888943 U CN201320888943 U CN 201320888943U CN 203671143 U CN203671143 U CN 203671143U
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- thin
- air flow
- discharging opening
- abrasion
- walled ring
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- Crushing And Grinding (AREA)
Abstract
The utility model discloses an air flow mill discharging opening abrasion-resisting structure. Abrasion-resisting hard alloy steel is used for machining a thin-wall ring with the wall thickness of 5 mm, and the thin-wall ring is arranged at a discharging opening, close to a high-pressure mill chamber, of an air flow mill in an embedded-sleeved mode. Under the premise that powder-out speed is not lowered, the abrasion speed of an outlet pipe wall is greatly lowered, and the discharging opening does not need to be replaced or maintained after being practically used for nearly five months. Maintaining cost is saved, production efficiency is improved, and meanwhile great potential safety hazards in powder manufacturing through the air flow mill are avoided.
Description
Technical field
The utility model solves targetedly to spray formula airflow milling in pulverizing process, high pressure mill chamber outlet tube wall is because being impacted by the high pressure draught of tramp metal powder for a long time, the method penetrating that is very easily worn, belongs to air-flow grinding machine is carried out to a kind of airflow milling discharge port anti-wear structure.
Background technique
Airflow milling claims again fluid energy mill, mainly by following several types: spiral jet pulverizer, circulating airflow milling, to spray formula airflow milling, target formula airflow milling, fluidization to spray formula airflow milling.The airflow milling that the industry is used is generally spray formula airflow milling, and cardinal principle is to utilize a kind of ultrafine crusher of high velocity air as energy medium.With several atmospheric gas in nozzle enters crushing chamber with mixing of materials high-speed motion.At the volley, material, by the shock between particle own, is sheared with air-flow and obtains and pulverize with the impact of miscellaneous part.Each get 1 particle to several μ m.Crushing material ratio is generally 1～40, and material Processing capacity is less, and air consumption is larger.
Airflow milling is one of research of super-pine crush equipment as the most frequently used, is widely used in the ultra-fine grinding of nonmetallic minerals and industrial chemicals etc., has following features:
(1) product fineness all with, narrower particle size distribution, particle surface is smooth, particle shape is regular, purity is high, activity is large, good dispersion.
(2) product is contaminated few.Because airflow crash machine is according to the autogenous grinding principle of material, material to be pulverized, pulverize cavity few to the pollution of product, be therefore particularly suitable for medicine etc. and do not allow by the crushing material of metal and other impurity contaminations.
(3) be applicable to pulverizing low melting point and temperature-sensitive material and biological activity goods, because airslide disintegrating mill is take pressurized air as power, pressurized gas can make system temperature reduce in the adiabatic expansion at nozzle place, so can not produce a large amount of heat in working procedure.
(4) can under asepsis, operate.
(5) production process is continuous, and throughput is large, and automatic control, automaticity are high.
(6) realize joint operation.Because in the time pulverizing with overheated high-pressure saturated steam, can carry out the pulverizing of material simultaneously and be dried, and can be used as mixing machine use; Material, in pulverizing, can spray into the solution of desired concn, covers solid fine grained with this, and to form clad and to carry out surface modification, therefore, air-flow crushing can be coated with pulverizing appearance and surface modification combines.
Model utility content
The purpose of this utility model is to provide a kind of airflow milling discharge port anti-wear structure, has not only saved maintenance cost, has improved manufacturing efficiency, has also solved the major safety risks in airflow milling powder simultaneously.
The technical solution of the utility model is as follows:
A kind of airflow milling discharge port anti-wear structure, include high pressure mill chamber, in the discharge port tube wall of described high pressure mill chamber, be inlaid with thin-walled ring, thin-walled ring is to adopt cemented carbide to be processed into; thin-walled ring edge is enclosed within outlet tube wall, external diameter 80mm, the internal diameter 70mm of thin-walled ring, wall thickness 5mm.
The processing of described cemented carbide thin-walled ring is to adopt custom mold to be cast into after annular fine grinding to the size needing again.
The pressure of the high pressure mill chamber of the core component formation pulverized fluidized bed of airflow milling of the present utility model is generally at 0.6 ~ 0.8MPa, be equivalent to 6 ~ 8 barometric pressure, outlet port pipeline is the place that outlet powder turns to, because standing for a long time the air-flow violent scour that has 4 ~ 6 atm difference of tramp metal powder, be worn soon, slight wearing and tearing cause its skin friction to increase, and the increase of frictional force causes wearing and tearing to increase .... so transducer wall ' s abrasion is the growth of vicious circle formula.In actual production because of the generally employing of the broken technique of the hydrogenation of melting rapid hardening in recent years, powder delivery speed increment 3-5 doubly, the stainless steel tube wall of mill chamber outlet once just needs maintain and replace once in every 10-15 days till now by original at least monthly maintain and replace, very waste of manpower and manufacturing efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, a kind of airflow milling discharge port anti-wear structure, include high pressure mill chamber 1, in discharge port pipe 3 walls of high pressure mill chamber 1, be inlaid with thin-walled ring 2; thin-walled ring 2 is to adopt cemented carbide to be processed into; thin-walled ring edge is enclosed within outlet tube wall, external diameter 80mm, the internal diameter 70mm of thin-walled ring, wall thickness 5mm, the processing of cemented carbide thin-walled ring is to adopt custom mold to be cast into after annular fine grinding to the size needing again.
(1) because of cemented carbide be difficult to machining, first make annulus crude green body by casting technique, then grind process and polishing to the dimensional accuracy requiring.
(2) because mill chamber outlet tube wall is not the lineal shape of standard, cannot closely be inserted in inwall so as slightly long in cemented carbide annular wall, enter after repeatedly improving and found the mode that multiple rings splice to solve this difficult problem.
(3) because hard alloy wear resistance is good, the high pressure draught of tramp metal powder not only no longer causes wearing and tearing to mill chamber outlet tube wall, on the contrary cemented carbide inwall is produced to certain polishing action, the more smooth frictional force of inwall more of a specified duration that tube wall is used is less, change former wearing and tearing vicious circle for benign cycle, the tube wall of reequiping has for the first time used still intact into 5 months, and the life-span can reach 1 year according to a preliminary estimate, is in the past 30 times.
Claims (2)
1. an airflow milling discharge port anti-wear structure, include high pressure mill chamber, it is characterized in that, in the discharge port tube wall of described high pressure mill chamber, be inlaid with thin-walled ring; thin-walled ring is to adopt cemented carbide to be processed into; thin-walled ring edge is enclosed within outlet tube wall, external diameter 80mm, the internal diameter 70mm of thin-walled ring, wall thickness 5mm.
2. according to claim 1 airflow milling discharge port anti-wear structure, it is characterized in that, the processing of described cemented carbide thin-walled ring is to adopt custom mold to be cast into after annular fine grinding to the size needing again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888943.3U CN203671143U (en) | 2013-12-30 | 2013-12-30 | Air flow mill discharging opening abrasion-resisting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888943.3U CN203671143U (en) | 2013-12-30 | 2013-12-30 | Air flow mill discharging opening abrasion-resisting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203671143U true CN203671143U (en) | 2014-06-25 |
Family
ID=50967436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888943.3U Expired - Fee Related CN203671143U (en) | 2013-12-30 | 2013-12-30 | Air flow mill discharging opening abrasion-resisting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203671143U (en) |
-
2013
- 2013-12-30 CN CN201320888943.3U patent/CN203671143U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Air flow mill discharging opening abrasion-resisting structure Effective date of registration: 20170901 Granted publication date: 20140625 Pledgee: Hefei City, Chaohu Xingtai financing Company limited by guarantee Pledgor: ANHUI ONE MAGNET ELECTRONIC CO., LTD. Registration number: 2017340000195 |
|
| PM01 | Change of the registration of the contract for pledge of patent right | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20170918 Registration number: 2017340000195 Pledgee after: Hefei Xingtai technology financing Company limited by guarantee Pledgee before: Hefei City, Chaohu Xingtai financing Company limited by guarantee |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20181230 |