CN212215837U - Loading frame neck protector of medium speed coal mill - Google Patents
Loading frame neck protector of medium speed coal mill Download PDFInfo
- Publication number
- CN212215837U CN212215837U CN201922169299.4U CN201922169299U CN212215837U CN 212215837 U CN212215837 U CN 212215837U CN 201922169299 U CN201922169299 U CN 201922169299U CN 212215837 U CN212215837 U CN 212215837U
- Authority
- CN
- China
- Prior art keywords
- loading frame
- protection plate
- neck
- plate
- coal
- 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.)
- Active
Links
Images
Landscapes
- Crushing And Grinding (AREA)
Abstract
The neck protection device of the loading frame of the medium-speed coal mill comprises a side protection plate positioned on a vertical windward side of the neck of the loading frame, a bottom protection plate positioned on the lower side surface of the neck of the loading frame and connected with the side protection plate, and a plurality of fixed connecting pieces connected between the side protection plate and the bottom protection plate and used for positioning the bottom protection plate and the side protection plate on the neck of the loading frame, wherein the fixed connecting pieces are in zigzag shapes matched with unprotected surfaces at the journal of a grinding roller of the loading frame. The guard plate is made of wear-resistant steel with high hardness (the Brinell hardness HBW is more than or equal to 370), a surfacing steel plate or a common steel plate adhered with wear-resistant ceramic and the like; the utility model has the advantages that: the side guard plates and the bottom guard plate are additionally arranged to form an isolation layer between the loading frame and the air and powder flow, so that the impact of the air and powder flow on the loading frame is avoided, and the influence of the coal grinding on the loading frame in the working state of large ventilation volume and high air temperature of the high-moisture lignite and high-moisture bituminous coal is eliminated. The device also has the advantages of simple structure, convenient installation and replacement operation and reliable performance.
Description
Technical Field
The utility model belongs to the mechanical equipment field, concretely relates to coal pulverizer that places such as coal fired power plant, chemical plant, smelting plant used.
Background
The medium speed coal mill is mainly applied to a thermal power plant, a chemical plant or an iron and steel plant, is used for grinding raw coal into coal powder with a certain fineness requirement, simultaneously completes the drying process of the coal powder and conveys the coal powder to equipment such as a boiler and the like.
In the traditional old medium speed coal mill loading frame, the neck of the loading frame extending from the cross beam in a crossing way is positioned on a channel for conveying coal powder by wind, and is washed by a mixture of wind and powder, so that the loading frame is heavy in abrasion, particularly when a coal mill mills bituminous coal or lignite with high moisture, the moisture of raw coal is high, and in order to ensure that the outlet temperature of the coal mill is within the range required by power plant equipment, more heat is needed to dry the raw coal and convey the coal powder out of the mill, so that the temperature of primary hot air on the coal mill is high, the flow is large, the neck of the loading frame is more seriously washed and abraded, the service cycle of the loading frame is shortened, the shutdown maintenance frequency is increased, the normal operation of a unit is influenced, and the. Even the phenomenon that the neck of the loading frame is broken when the coal mill normally operates due to serious abrasion occurs, and the safe and stable operation of the coal mill is directly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an intermediate speed coal pulverizer loading frame neck protector for hinder keep out wind, the impact of whitewashed flow to the loading frame neck, overcome the above-mentioned not enough that prior art exists.
The utility model discloses a protector by be located the vertical windward side of loading frame neck side guard plate, be located loading frame neck downside and with the side guard plate be connected end backplate, connect between side guard plate and end backplate with end backplate at the several fixed connection spare of backplate and side guard plate location at the loading frame neck and constitute, fixed connection spare for the surface anastomotic tortuous shape that does not have the protection with loading frame grinding roller axle journal department.
The side guard plate and the bottom guard plate are made of wear-resistant steel with high hardness (the Brinell hardness HBW is more than or equal to 370), a surfacing steel plate or a common steel plate adhered with wear-resistant ceramic and other materials;
the fixed connecting piece is preferably in a zigzag shape formed by welding and connecting a plurality of steel plate strips.
The utility model has the advantages that: the side guard plates and the bottom guard plate are additionally arranged at the neck part of the loading frame to form an isolation layer between the loading frame and the air and powder flows, so that the washing of the air and powder flows on the loading frame is avoided, the neck part of the loading frame is enabled to operate in a state without air and powder abrasion, and the influence of coal grinding on the loading frame in a working state with large ventilation volume and high air temperature of high-moisture lignite and high-moisture bituminous coal is eliminated. The protection device also has the advantages of simple structure, convenient installation and replacement operation and reliable performance.
Drawings
Fig. 1 is an assembly view of the protection device on the loading frame.
Figure 2 is a cross-sectional view of the neck a-a of the loading frame with the protector of the present invention.
Detailed Description
Referring to fig. 1 and 2, the utility model discloses a loading frame neck protector of medium speed coal mill includes: the side guard plate comprises a side guard plate 1 positioned on the vertical windward side of the neck of a loading frame 4, a bottom guard plate 2 positioned on the lower side of the neck of the loading frame 4 and welded with the side guard plate 1, and two fixed connecting pieces 3 which are connected between the side guard plate 1 and the bottom guard plate 2 and used for positioning the guard plate on the loading frame 4 and are formed by welding and connecting a plurality of steel plate strips. The fixed connecting piece 3 is a zigzag plate surface which is inosculated with the unprotected surface of the neck of the loading frame 4. The side guard plate 1 and the bottom guard plate 2 are made of wear-resistant steel plates with high hardness (the Brinell hardness HBW is more than or equal to 370).
Claims (2)
1. The utility model provides a loading frame neck protector of medium speed pulverizer, characterized by: the loading frame comprises a side protection plate positioned on the vertical windward side of the neck of the loading frame, a bottom protection plate positioned on the lower side surface of the neck of the loading frame and connected with the side protection plate, and a plurality of fixed connecting pieces connected between the side protection plate and the bottom protection plate and used for positioning the bottom protection plate and the side protection plate at the neck of the loading frame, wherein the fixed connecting pieces are in zigzag shapes matched with the unprotected surfaces at the journal of a grinding roller of the loading frame.
2. The load carrier neck protector of the medium speed coal mill according to claim 1, wherein: the fixed connecting piece is in a zigzag shape formed by welding and connecting a plurality of sections of steel plate strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922169299.4U CN212215837U (en) | 2019-12-06 | 2019-12-06 | Loading frame neck protector of medium speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922169299.4U CN212215837U (en) | 2019-12-06 | 2019-12-06 | Loading frame neck protector of medium speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212215837U true CN212215837U (en) | 2020-12-25 |
Family
ID=73902051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922169299.4U Active CN212215837U (en) | 2019-12-06 | 2019-12-06 | Loading frame neck protector of medium speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212215837U (en) |
-
2019
- 2019-12-06 CN CN201922169299.4U patent/CN212215837U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103706437B (en) | Vertical type roller milling rotation blanking device | |
| US7584918B1 (en) | Wear plate assembly for vertical rotor of a pulverizer | |
| CN108339655B (en) | Rotary nozzle structure of medium-speed coal mill | |
| CN212215837U (en) | Loading frame neck protector of medium speed coal mill | |
| CN106824409A (en) | A kind of grid liner plate for vertical mixing mill | |
| CN211436554U (en) | Reduce ventilation resistance's rotatory nozzle cascade of medium speed coal mill | |
| CN203737311U (en) | Rotary unloader of vertical type roller mill | |
| CN205462492U (en) | Immediately, grinding roller sheath | |
| CN206375378U (en) | Blanking structure for chute induction system | |
| CN210859811U (en) | Sealing device for grinding roll shaft and grinding machine shell of vertical grinding machine | |
| CN201031215Y (en) | Forked chute of coke dry quenching boiler once dust-cleaning equipment | |
| CN101387405B (en) | Novel heavy duty frame stressing layering coal supply apparatus | |
| CN103712439B (en) | Rotary kiln outer drum waste heat collecting system and collecting method thereof | |
| CN203281399U (en) | Wear-resistant spiral conveyor | |
| CN108787045B (en) | Vertical mill feeding chute device with fluidization function | |
| CN219252848U (en) | Wear-resistant air outlet pipe of drying crusher | |
| CN216573386U (en) | Anti-blocking partition plate and discharging grate plate device | |
| CN213315513U (en) | Fan coal mill | |
| CN203648632U (en) | Novel vertical-mill gas deflector cone | |
| CN215491005U (en) | Novel double-layer sealing device of circular cooler | |
| CN211613029U (en) | Discharge tube for high-pressure roller mill | |
| CN219928658U (en) | High-reliability environment-friendly spiral three-way chute | |
| CN210058540U (en) | Wear-resisting fluid energy mill | |
| CN101476565A (en) | Manufacturing high-temperature abrasion-proof materiel fan by high-chromium alloy composite material | |
| CN208074940U (en) | A kind of powdered coal burner coal feed point |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |