CN-122007017-A - Limestone high-calcium stone screening production line

CN122007017ACN 122007017 ACN122007017 ACN 122007017ACN-122007017-A

Abstract

The invention discloses a limestone high-calcium stone screening production line which comprises screening rollers, a vibrating screen, a swinging screen and a crushing mechanism, wherein the screening rollers are arranged side by side, a first conveying belt is arranged below the screening rollers, a cleaning and drying cylinder is arranged below the tail end of the first conveying belt, limestone is cleaned and dried through the cleaning and drying cylinder, the cleaning and drying cylinder is in butt joint with the vibrating screen, the vibrating screen is used for screening, limestone smaller than 5mm is conveyed to the crushing mechanism for crushing, the processed material of the crushing mechanism is conveyed to the swinging screen for screening, and limestone is cleaned and then is separated, so that impurities of the limestone are cleaned, and the screened limestone raw materials meet the food specification.

Inventors

WEI HONGGUANG
CHEN GANG
LIU YAHUI
Xiang Mingtao
LI QINGJUAN
WANG HAIBIN
LI JIANHUI
SONG JIEMING
WU YUTAO
ZHANG NENG
HOU DEDAO
ZHAO CHUNYANG
SU MIN

Assignees

临澧冀东水泥有限公司

Dates

Publication Date: 20260512
Application Date: 20251128

Claims (7)

1. The utility model provides a lime stone high calcium stone screening production line, including screening roller, shale shaker, swinging screen and crushing mechanism, a plurality of screening rollers set up side by side, be provided with first conveyer belt in the below of a plurality of screening rollers, a serial communication port, be provided with the washing stoving section of thick bamboo in the below at first conveyer belt end, wash and dry the lime stone through the washing stoving section of thick bamboo, the washing stoving section of thick bamboo is docked with the shale shaker, carry out the screening through the shale shaker, wherein be less than 5 mm's lime stone is carried to crushing mechanism and is broken, the material after the crushing mechanism processing is carried to the swinging screen and is sieved; The cleaning and drying cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are nested with each other, the inner cylinder rotates in the outer cylinder, a plurality of water passing holes with diameters smaller than those of limestone are formed in the outer wall of the inner cylinder, spiral conveying blades are arranged on the inner wall of the inner cylinder, a hollow pipe is arranged in the center of the inner cylinder in a penetrating mode, a baffle plate attached to the hollow pipe is inserted into the hollow pipe, an operating rod capable of being pushed is arranged on the baffle plate, one end of the operating rod penetrates through the hollow pipe, two ends of the hollow pipe are respectively abutted to a water supply assembly and a hot air supply assembly, and a plurality of through holes communicated with the inside of the hollow pipe are formed in the outer wall of the hollow pipe.
2. The limestone high-calcium stone screening production line according to claim 1, wherein a soaking area is arranged at the front end of the inner cylinder and comprises an annular partition plate and a water baffle plate, the annular partition plate is arranged on the inner wall of the outer cylinder, the inner wall of the annular partition plate is combined with the outer wall of the inner cylinder, the water baffle plate is arranged on the inner wall of the inner cylinder and is positioned on the same plane with the annular partition plate, the top of the water baffle plate is fixed with the hollow tube, the bottom of the water baffle plate is attached to the inner wall of the inner cylinder and is in sliding fit with the inner wall of the inner cylinder, and the spiral conveying blades are porous sheets.
3. The limestone-high-calcium stone screening production line according to claim 2, wherein the vibrating screen comprises a mounting frame, an upper screen and a lower screen, wherein a base is arranged below the mounting frame, a plurality of springs are arranged between the base and the bottom of the mounting frame, a vibrating motor is arranged on the outer wall of the mounting frame, a plurality of layers of lower screens with equal height difference are arranged in the mounting frame, the apertures of the layers of lower screens are gradually reduced from top to bottom, the upper screen is arranged on the mounting frame above the lower screens, the layers of upper screens are gradually increased from right to left, the aperture of each upper screen is rotationally matched with the mounting frame, a swinging assembly is arranged between each upper screen and the mounting frame, a linkage assembly is arranged between the swinging assemblies, the upper screens synchronously rotate through the linkage assembly, and a connecting assembly is arranged between the two adjacent upper screens.
4. The limestone-high-calcium stone screening production line according to claim 3, wherein the outer wall of the installation frame is provided with an arc hole, the swinging component is a sliding column, the arc hole is internally provided with the sliding column, one end of the sliding column is fixed with the outer wall of the upper layer screen, the sliding column extends out of the installation frame, the linkage component comprises a hydraulic cylinder, a linkage rod and a linkage cylinder, two ends of the linkage rod are provided with threaded sections, two seats are installed on the installation frame, the threaded sections of the linkage rod penetrate through the seats, the threaded sections of the two seats are in threaded fit, one end of the linkage rod is provided with a stepping motor, the sliding column is sleeved with a circular ring, the linkage rod is provided with a plurality of annular grooves, the circular ring is installed in each annular groove, a connecting rod is fixed on the circular ring of the sliding column, and the other end of the connecting rod is hinged on the circular ring of the linkage rod, and the sliding column is driven to slide in the arc hole by movement of the linkage rod.
5. The limestone-hypercalcite screening production line of claim 4, wherein the connecting component is a connecting piece, one end of the connecting piece is hinged with one end of one upper screen, the other end of the connecting piece is in sliding fit with the bottom of the adjacent upper screen, and when the upper screens swing downwards, the upper screens form a step shape.
6. A limestone-high-calcium stone screening production line according to claim 5 is characterized in that a plurality of receiving hoppers are arranged below the vibrating screen, each receiving hopper is in butt joint with the tail parts of the corresponding upper layer screen and the corresponding lower layer screen, so that limestone in the upper layer screen and limestone in the lower layer screen enter the corresponding receiving hoppers to achieve screening, a second conveying belt is arranged below each receiving hopper, limestone with different particles is conveyed out through the second conveying belt, and a crushing mechanism is arranged below the tail end of the limestone conveying belt with the thinnest conveying particles.
7. A limestone high calcium stone screening production line according to claim 6, wherein the crushing mechanism is a curved surface roller mill, a lifter is arranged below the curved surface roller mill, a swing screen is arranged below a discharge hole of the lifter, two layers of screens are arranged in the swing screen, a storage hopper for receiving materials is arranged below the tail end of each layer of screens, the other end of the return component is positioned right above the crushing mechanism, a groove plate is arranged below the swing screen, the tail end of the groove plate is abutted with a powder hopper, a movable scraping plate is arranged in the groove, powder moving in the groove plate is realized through the scraping plate, a swing elastic ball is arranged below each layer of screens of the swing screen, the swing screen is characterized in that each elastic ball is fixed with a swing rod, the other end of the swing rod is hinged to the inner wall of the swing screen, a bearing plate for the elastic ball to strike is mounted at the bottom of the screen, a pull rod is hinged to the middle section of the swing rod, the pull rods on the same side are hinged to the same translation rod, the translation rod is in translation fit with the inner wall of the swing screen, a plurality of guide rods are mounted on the outer side of the translation rod, the guide rods penetrate through the outer wall of the swing screen and protrude out of the swing screen, pulleys are mounted at the tail ends of the guide rods, inclined planes are mounted on a fixing frame of the swing screen, the pulleys move along the inclined planes on the swing screen, and the elastic ball strikes the bottom of the screen, so that the conveying efficiency is high.

Description

Limestone high-calcium stone screening production line Technical Field The invention relates to the field of high-calcium stone processing equipment, in particular to a limestone high-calcium stone screening production line. Background At present, the screening of high-calcium stones mainly adopts a mode of combining a screening roller and a vibrating screen to carry out vibration separation on limestone. The limestone raw materials for mining are primarily sorted and classified according to particle size by a screening roller, and limestone with smaller particles enters a vibrating screen for further classification. However, the screening system has the obvious defect that the size of the separated small-particle limestone is still larger, and the small-particle limestone cannot be directly used as a feed-grade stone powder raw material. Although small particle limestone can theoretically be used as a feed material, feed grade stone dust has strict requirements on particle size. The small-particle limestone obtained by the prior art cannot meet the related specification standard, and the limestone raw material meeting the requirements can be obtained only by secondary processing and re-screening. Because the prior screening technology is difficult to directly produce qualified raw materials, the small-particle limestone can be treated as waste in actual production, and resource waste is caused. The existing limestone is not used as feed-grade stone powder after sieving, but is only used as raw material of cement, so that the limestone is not cleaned when sieving, and cannot be used as a food additive, and the limestone needs to be cleaned when sieving. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a limestone high-calcium stone screening production line which is convenient for carrying out secondary processing and screening on small-particle limestone particles, and finally screening high-calcium stone powder with the main varieties of 3.5mm-0.85mm, less than 0.425mm and the like as feed raw material stone powder, so that the small-particle limestone particles which need to be discarded are used as economic products. The limestone high-calcium stone screening production line comprises screening rollers, a vibrating screen, a swinging screen and a crushing mechanism, wherein a plurality of screening rollers are arranged side by side, a first conveying belt is arranged below the plurality of screening rollers, a cleaning and drying cylinder is arranged below the tail end of the first conveying belt, limestone is cleaned and dried through the cleaning and drying cylinder, the cleaning and drying cylinder is in butt joint with the vibrating screen, the vibrating screen is used for screening, limestone smaller than 5mm is conveyed to the crushing mechanism for crushing, and materials processed by the crushing mechanism are conveyed to the swinging screen for screening; The cleaning and drying cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are nested with each other, the inner cylinder rotates in the outer cylinder, a plurality of water passing holes with diameters smaller than those of limestone are formed in the outer wall of the inner cylinder, spiral conveying blades are arranged on the inner wall of the inner cylinder, a hollow pipe is arranged in the center of the inner cylinder in a penetrating mode, a baffle plate attached to the hollow pipe is inserted into the hollow pipe, an operating rod capable of being pushed is arranged on the baffle plate, one end of the operating rod penetrates through the hollow pipe, two ends of the hollow pipe are respectively abutted to a water supply assembly and a hot air supply assembly, and a plurality of through holes communicated with the inside of the hollow pipe are formed in the outer wall of the hollow pipe. Preferably, be provided with the soaking zone in an inner tube front end, the soaking zone includes annular baffle and breakwater, is provided with annular baffle on the urceolus inner wall, and annular baffle inner wall combines with the inner tube outer wall, is provided with the breakwater on an inner tube inner wall, and the breakwater is located the coplanar with annular baffle, and the breakwater top is fixed with the hollow tube, and breakwater bottom and inner tube inner wall laminating and sliding fit, spiral delivery blade are porous piece. Preferably, the vibrating screen comprises a mounting frame, an upper screen and a lower screen, wherein a base is arranged below the mounting frame, a plurality of springs are arranged between the base and the bottom of the mounting frame, a vibrating motor is arranged on the outer wall of the mounting frame, a plurality of layers of lower screens with equal height difference are arranged in the mounting frame, the aperture of the plurality of layers of lower screens is gradually reduced from top to bottom, the upper sc