CN202667142U - Grading wheel - Google Patents
Grading wheel Download PDFInfo
- Publication number
- CN202667142U CN202667142U CN 201220307500 CN201220307500U CN202667142U CN 202667142 U CN202667142 U CN 202667142U CN 201220307500 CN201220307500 CN 201220307500 CN 201220307500 U CN201220307500 U CN 201220307500U CN 202667142 U CN202667142 U CN 202667142U
- Authority
- CN
- China
- Prior art keywords
- blade
- grading wheel
- fixedly connected
- grading
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Crushing And Pulverization Processes (AREA)
Abstract
The utility model discloses a grading wheel, which comprises a base, hard alloy blades and a press plate, wherein the base is fixedly connected with an output shaft of a driving device, one end of each blade is fixedly connected onto the base, and the other end of each blade is fixedly connected onto the press plate. Because the blades of the grading wheel are the hard alloy blades with higher hardness, the hardness is improved from the average value of 67HRA to 90HRA, the service life is prolonged by more than three times, the iron content in tungsten carbide is reduced, the product purity is improved, meanwhile, the consumption of the grading wheel is also reduced, about four hundred thousand Yuan of value can be saved every year, and the application of the grading technology in the field of super hard materials is greatly widened.
Description
Technical field
The utility model relates to a kind of jet mill grinding equipment, especially a kind of rotation grading wheel that powder is carried out the classification processing and fully contacts with powder.
Background technology
Jet mill grinding is a kind of equipment of powder manufacture field, and it can effectively improve the size distribution of powder.The jet mill grinding technology is widely used at present the again broken of powder material and separates with thickness, its basic process is that material is sent to graded region with ascending air under the effect of air-flow, at graded region, the grading wheel of High Rotation Speed produces powerful centrifugal field, and particle is subjected to the effect of two power of centripetal force of the gentle stream viscosity effect generation of centrifugal intertia force in centrifugal field.When particle is subject to centrifugal force greater than centripetal force, i.e. the above corase particles in classification footpath returns pulverizing chamber to be continued impact comminution or enters the meal collector, the following fine particle in classification footpath with air-flow enter cyclone separator, trap is collected.By the speed of adjusting grading wheel or the granularity that air velocity can be controlled discharging.This technology has also obtained a large amount of utilizations at the manufacture field of hard material such as tungsten carbide.Wherein powder is carried out that classification is processed and be core component in the air current classifying equipment with the grading wheel that runs up that powder fully contacts, it is to run up in work, can reach 6000 rev/mins, it is comprised of blade and the pedestal of inlaying blade, blade all is to adopt steel or wear-resisting alloy steel material to make the average 67HRA of hardness at present.Because blade is subject to the impact of powder particle and air-flow in the course of the work always, for easily wearing and tearing such as the material tungsten carbide of processing high-hardness, titanium carbides, and cause following drawback:
1, dirtyization of material: because the wearing and tearing of grading wheel and blade enter in the powder-product, can increase iron, nickel, the chromium equal size of product.
2, size distribution is poor: after the graded blade wearing and tearing, cause classification efficiency to descend, coarse granule can pass from the blade space and the oversize grain in powder-product chap or the fine powder is increased.
3, the consumption of the high steel grading wheel processing of cost tungsten carbide is 1/25 tons tungsten carbides, and the conversion cost is 360 yuan/tons.The frequent grading wheel also can affect manufacturing schedule.
Summary of the invention
The purpose of this utility model is: for the problem of above-mentioned existence, provide a kind of Novel classifying wheel, its long service life, classification efficiency are high, production cost is low.
The utility model comprises the pedestal with the drive unit output shaft fixed connection, the carbide alloy blade, and pressing plate, an end of described blade is connected on the pedestal, and the other end is connected on the pressing plate.Above-mentioned being connected can be realized by welding.Pressing plate is connected with pedestal by blade as the port of export that connects material.Pedestal is with the moving vane High Rotation Speed under the power drive of drive unit, because the blade of grading wheel is the carbide alloy blade with higher hardness, the hardness of blade is brought up to 90HRA by average 67HRA, and prolong more than the several times service life.
Further improvement is, the blade two ends are provided with pull bar, can increase the bonding strength of blade, and to satisfy the needs of high-speed cruising, its material is steel.
Description of drawings
The utility model will describe by embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the cross-sectional schematic of the utility model grading wheel.
Fig. 2 is the top view after Fig. 1 removes pressing plate.
Fig. 3 is blade construction schematic diagram of the present utility model.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Shown in Fig. 1-3, the utility model grading wheel comprises the pedestal 3 that links to each other with the classification motor output shaft, and air seal is adopted in its axis hole gap, can prevent that powder from entering in the axle and produce wearing and tearing; Also comprise the pressing plate 1 that connects the material port of export; One end is welded on the pedestal, and the other end is welded on the carbide alloy blade 2 on the pressing plate, and its two ends are provided with pull bar 4.
The carbide alloy blade adopts the method for powder metallurgy to make.It contains weight of cobalt is 5% to 15%, and surplus is tungsten carbide, first compressing again sintering densification, obtain blade blank after, adopt the line cutting to be refined to and reach dimension precision requirement.After blade after the fine finishining and the pedestal welding, need to carry out dynamic balance running, it is stable that assurance runs up.According to granularity and the grading wheel speed of converted products, the quantity of welding blade can be adjusted, and the quantity of blade is many, and then the gap between the blade is little, and under same rotational speed, the granularity of discharging descends, and output also descends.Because the blade of grading wheel is the carbide alloy blade with higher hardness, the hardness of blade is brought up to 90HRA by average 67HRA.In order to increase bulk life time, pressing plate 1, pedestal 3 also can be replaced by carbide alloy.
By the grading wheel of employing said structure, 1/110 tons tungsten carbides of consumption average out to, 9800 yuan of single prices are processed 1500 tons of calculating of tungsten carbide per year, save 41.6 ten thousand yuan of costs.More valuable is the impurity content that can reduce in the powder, improves the tungsten carbide quality.
The above only is preferred embodiment of the present utility model, all any modifications of doing within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. grading wheel is characterized in that: comprise the pedestal with the drive unit output shaft fixed connection, and the carbide alloy blade, pressing plate, an end of described blade is connected on the pedestal, and the other end is connected on the pressing plate.
2. grading wheel as claimed in claim 1 is characterized in that: described blade two ends are connected with pressing plate and pedestal welding respectively.
3. grading wheel as claimed in claim 1 or 2 is characterized in that: also comprise the pull bar that is arranged on the blade two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307500 CN202667142U (en) | 2012-06-28 | 2012-06-28 | Grading wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307500 CN202667142U (en) | 2012-06-28 | 2012-06-28 | Grading wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202667142U true CN202667142U (en) | 2013-01-16 |
Family
ID=47488075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220307500 Expired - Lifetime CN202667142U (en) | 2012-06-28 | 2012-06-28 | Grading wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202667142U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668193A (en) * | 2015-03-06 | 2015-06-03 | 昆山市密友装备制造有限责任公司 | High-efficiency grading wheel for jet mill |
| CN104668192A (en) * | 2015-03-06 | 2015-06-03 | 昆山市密友装备制造有限责任公司 | High-precision grading wheel for jet mill |
| CN106425542A (en) * | 2016-12-05 | 2017-02-22 | 姚均甫 | Machining device of grading wheel |
-
2012
- 2012-06-28 CN CN 201220307500 patent/CN202667142U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668193A (en) * | 2015-03-06 | 2015-06-03 | 昆山市密友装备制造有限责任公司 | High-efficiency grading wheel for jet mill |
| CN104668192A (en) * | 2015-03-06 | 2015-06-03 | 昆山市密友装备制造有限责任公司 | High-precision grading wheel for jet mill |
| CN106425542A (en) * | 2016-12-05 | 2017-02-22 | 姚均甫 | Machining device of grading wheel |
| CN106425542B (en) * | 2016-12-05 | 2018-12-25 | 大连环球矿产股份有限公司 | A kind of processing unit (plant) of grading wheel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100484635C (en) | Micronizing impact grinder and the powder processing system thereof | |
| CN103521333B (en) | A kind of to pulverize and two-stage sorting process and pulverizing and two-stage separation system | |
| CN105435938A (en) | Cement combined grinding system | |
| CN202667142U (en) | Grading wheel | |
| CN210058463U (en) | Super little rubbing crusher tup and use super little rubbing crusher of this tup | |
| CN111822129A (en) | Iron ore dry grinding and dressing device and process | |
| CN103495482A (en) | Smashing and sorting technology as well as smashing and sorting system | |
| CN104874443A (en) | Graded milling structure of vertical roller grinder | |
| CN201799412U (en) | Rotor-free classifier | |
| CN104874445A (en) | Graded milling process of vertical roller grinder | |
| CN205340999U (en) | Grinding system is united to cement | |
| CN201064775Y (en) | Separator | |
| CN202290576U (en) | Powder concentrator guide blade cage | |
| CN207547025U (en) | A kind of horizontal high-speed precision bull grader | |
| CN209287478U (en) | Single turbine vertical superfine classifier | |
| CN207042650U (en) | A kind of wear-resisting separator for ceramic raw material particulate abrasive | |
| CN113877703A (en) | Production system of high-efficient balling graphite | |
| CN105642544A (en) | Vertical type airflow classifier with multiple particle size fractions | |
| CN202097021U (en) | Equipment for manufacturing ultrafine particles | |
| CN101961713B (en) | Classifier without rotor | |
| CN102114544A (en) | Method for preparing tungsten powder having uniform size distribution as well as excellent degree of sphericity and dispersity | |
| CN206778565U (en) | A kind of classification wheel apparatus suitable for lower discharge vertical ultrafine disintegrator | |
| CN202070368U (en) | Turbine type crushing machine | |
| CN202078926U (en) | Smashing-classifying integrated machine | |
| CN220678588U (en) | Graded wheel with adjustable gap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
|
| CX01 | Expiry of patent term |