CN201990227U - Conveying belt sweeper - Google Patents
Conveying belt sweeper Download PDFInfo
- Publication number
- CN201990227U CN201990227U CN2011200881400U CN201120088140U CN201990227U CN 201990227 U CN201990227 U CN 201990227U CN 2011200881400 U CN2011200881400 U CN 2011200881400U CN 201120088140 U CN201120088140 U CN 201120088140U CN 201990227 U CN201990227 U CN 201990227U
- Authority
- CN
- China
- Prior art keywords
- belt
- conveying belt
- sweeper
- haul
- scraping plate
- 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 - Fee Related
Links
- 241001417527 Pempheridae Species 0.000 title abstract 4
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000007790 scraping Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000010408 sweeping Methods 0.000 abstract 2
- 230000002035 prolonged Effects 0.000 abstract 1
- 241000282898 Sus scrofa Species 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Abstract
The utility model provides a conveying belt sweeper, wherein a strip-shaped scrapping plate with the length equal to the width of the conveying belt is arranged at the front end of a head wheel of the conveying belt, and the scrapping plate is connected onto a seal cover on the lateral side of the head wheel through a plate support. Compared with an existing metal sweeper, sweeping effect of materials on the belt surface is greatly improved by using the scrapping plate, normal operation of the conveying belt is guaranteed, the problem that the belt is damaged due to crushing of the sweeper hung with materials is resolved, and accordingly service cycle of the conveying belt is prolonged, work load of sweeping and maintenance is reduced, and conveying and supply of the materials are guaranteed.
Description
Technical field
The utility model belongs to the transportation device field, relates in particular to a kind of clearing apparatus that is used for the cleaning of blast furnace haul belt surface.
Background technology
The used haul belt projected length of blast furnace haul system is generally 67 meters, for ironmaking mass transport belt, belong to the short belt of length, so the running velocity of belt is very fast, and the cycle of turning back is more frequent.Because the material of being carried is tide, spray on the material has calcium chloride in addition, therefore makes material very easily stick to belt surface, influences the normal operation of belt.In order to clean out with regard to the buildup of liking that belt surface, generally be belt cleaner to be installed at the passive great wheel place of turning back of belt, because this swabbing pig is the metal swabbing pig, clear material effect is unsatisfactory, especially hardness is higher, after in case the metal swabbing pig hangs up hard material, will form extruding to the haul belt, the belt phenomenon that damages due to crushing appears often, the belt that damages due to crushing every year reaches more than 140 meters, not only shortened the service life of belt, the increase expense is paid and maintenance load, and directly influences the conveying of material.
Summary of the invention
The purpose of this utility model aims to provide a kind of simple and practical, can improve cleaning effect, avoids the haul belt cleaner of belt damage.
For this reason, the solution taked of the utility model is:
A kind of haul belt cleaner is characterized in that, is provided with a bar shaped material scraping plate at haul belt great wheel front end, and material scraping plate is installed on the grillage, and grillage one end is connected on the great wheel side-closed cover.
Described material scraping plate length is identical with the haul belt width.
The old belt of described material scraping plate system's employing processes.
The beneficial effects of the utility model are:
Owing to change the metal swabbing pig into the vulcanite scraper flitch, compare with use metal swabbing pig, can greatly improve the cleaning effect of belt surface buildup, guarantee the normal operation of haul belt, avoid the damage due to crushing problem of belt of swabbing pig bridging, prolong the operating cycles of haul belt, reduce the work capacity of cleaning and maintenance, guarantee the conveying and the supply of material.
Description of drawings
Accompanying drawing is a haul belt cleaner installing condition scheme drawing.
Among the figure: seal bootr 1, belt 2, great wheel 3, grillage 4, material scraping plate 5.
The specific embodiment
By accompanying drawing as seen, great wheel 3 is a follower, and main effect is a back-up belt 2, and the belt 2 that is wrapped on the great wheel 3 is finished herein turn back, and is provided with seal bootr 1 in a side of great wheel 3, and is excessive to prevent material.The haul belt cleaner of the utility model is at great wheel 3 front ends, presses close to belt 2 places and be provided with the length material scraping plate 5 identical with haul belt 2 width, material scraping plate 5 is to adopt old belt to make, material scraping plate 5 is installed on the grillage 4, and grillage 4 one ends are fixed by bolts on the seal bootr 1 of great wheel 3 sides.
Claims (3)
1. a haul belt cleaner is characterized in that, is provided with a bar shaped material scraping plate at haul belt great wheel front end, and material scraping plate is installed on the grillage, and grillage one end is connected on the great wheel side-closed cover.
2. haul belt cleaner according to claim 1 is characterized in that, described material scraping plate length is identical with the haul belt width.
3. haul belt cleaner according to claim 1 is characterized in that, the old belt of described material scraping plate system's employing processes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011200881400U CN201990227U (en) | 2011-03-30 | 2011-03-30 | Conveying belt sweeper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011200881400U CN201990227U (en) | 2011-03-30 | 2011-03-30 | Conveying belt sweeper |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201990227U true CN201990227U (en) | 2011-09-28 |
Family
ID=44666721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011200881400U Expired - Fee Related CN201990227U (en) | 2011-03-30 | 2011-03-30 | Conveying belt sweeper |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201990227U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102500565A (en) * | 2011-12-20 | 2012-06-20 | 贵州开磷(集团)有限责任公司 | Method for cleaning forming belt |
CN110933322A (en) * | 2020-02-05 | 2020-03-27 | 天津美腾科技股份有限公司 | Method, device and system for cleaning iron remover and electronic equipment |
-
2011
- 2011-03-30 CN CN2011200881400U patent/CN201990227U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102500565A (en) * | 2011-12-20 | 2012-06-20 | 贵州开磷(集团)有限责任公司 | Method for cleaning forming belt |
CN110933322A (en) * | 2020-02-05 | 2020-03-27 | 天津美腾科技股份有限公司 | Method, device and system for cleaning iron remover and electronic equipment |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204080712U (en) | A kind of Novel sweeper truck cleaning brush | |
CN201721941U (en) | Conveyor belt with cleaner | |
CN201990227U (en) | Conveying belt sweeper | |
CN204093788U (en) | A kind of forming belt cleaning device | |
CN202038663U (en) | Rubber belt conveyer and coal slime conveying device with gap-segment sweeper | |
CN201559993U (en) | Unloaded cleanser on belt conveyor | |
CN203806614U (en) | Conveying belt cleaning device provided with nonlinear springs and suspended inclined scraping plates | |
CN204662321U (en) | A kind of scavenging vehicle is swept roller | |
CN204911643U (en) | Vertical roller mill's indisputable mechanism of row | |
CN205634033U (en) | Cleaning device for conveying belt | |
CN201485055U (en) | Automatic energy-saving cleaning device for material conveying belt | |
CN203667501U (en) | Belt cleaner with wear-resistant ceramic scraper | |
CN204999234U (en) | Clean sweeper of belt | |
CN203508444U (en) | Device prolonging service life of roller brush of slag scraping groove | |
CN204294469U (en) | The transition mechanism of a kind of brake block from powder spraying chamber to heating clamber | |
CN2900525Y (en) | Down loading scraper machine for coke cooling platform | |
CN204355702U (en) | A kind of powder band conveyor gas cleaning device | |
CN204713974U (en) | A kind of self-control band weight adjustable belt scraper cleaner | |
CN102408001A (en) | Unpowered rolling brush cleaning device | |
CN201236064Y (en) | Extrusion pressing clearing type belt conveyor | |
CN103879746A (en) | Automatic cleaning device of bucket chain conveyor | |
CN202880398U (en) | Belt roller embedded-material cleaning device | |
CN202321586U (en) | Wear-resistant ceramic belt-type sweeper for conveyer belt | |
CN204777178U (en) | Trigger corner case is scraped to tubular | |
CN206969614U (en) | A kind of composite fertilizer's conveyer belt automatic scraper |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
C14 | Grant of patent or utility model | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20170330 |
|
CF01 | Termination of patent right due to non-payment of annual fee |