CN111545326B - Preparation process of industrial calcium carbonate - Google Patents
Preparation process of industrial calcium carbonate Download PDFInfo
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- CN111545326B CN111545326B CN202010407674.9A CN202010407674A CN111545326B CN 111545326 B CN111545326 B CN 111545326B CN 202010407674 A CN202010407674 A CN 202010407674A CN 111545326 B CN111545326 B CN 111545326B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Abstract
The invention relates to a preparation process of industrial calcium carbonate, which uses multistage screening equipment, wherein the multistage screening equipment comprises a bottom plate, a screening chamber, a screening device, a transfer device and a belt conveyor, and the specific process flow for preparing the industrial calcium carbonate by adopting the multistage screening equipment is as follows: crushing, multistage screening, grinding, separation are collected and finished product packing, and sieving mechanism includes slewing mechanism, dwang, sieve, striker plate, reset spring and lug, and transfer device includes backup pad, No. two backup pads, belt conveyor and flange. According to the invention, the crushed stones are graded and screened through the sieve plates which are staggered up and down, the crushed stones with qualified sizes directly enter the subsequent grinding process, and the crushed stones with unqualified sizes are classified and conveyed according to different sizes, so that the crushing equipment can perform re-crushing treatment on the crushed stones in a targeted manner, and compared with a crushing mode in which the crushed stones with larger size difference are mixed together, the crushing efficiency can be obviously improved.
Description
Technical Field
The invention relates to the technical field of calcium carbonate preparation, in particular to a preparation process of industrial calcium carbonate.
Background
Limestone the main component of calcium carbonate, lime and limestone are a large amount of raw materials used in building materials and industries. Limestone can be directly processed into stone and burnt into quicklime, and the lime powder is white powdery substance with calcium carbonate as main component. The range of applications is very wide, most commonly calcium carbonate used in the construction industry, i.e. industrial.
In the preparation process of the lime powder, large limestone needs to be firstly crushed into gravels, and the gravels with qualified size are subjected to subsequent grinding procedures after being screened, so that the following problems still exist in the screening process of the gravels at present:
a. when the crushed stone thrown into the screening equipment at one time is large, the stacking height of the crushed stone is high, so that the crushed stone positioned at the upper end of the crushed stone pile can not be completely screened, the crushed stone with the size meeting the requirement is also mixed in the crushed stone pile with the size meeting the requirement, and the crushed stone is conveyed into the crusher together for re-crushing, and the actual working efficiency of the crusher is reduced;
b. after screening the rubble, often only can carry out classification according to the size according to two kinds of circumstances that whether meet the requirements to the rubble, the size does not reach the requirement and the size differs great rubble is unified to be carried to the breaker in, leads to the breaker to need carry out broken handle to the not unidimensional rubble simultaneously, is difficult to guarantee crushing effect's even.
In order to solve the problems, the invention provides a preparation process of industrial calcium carbonate.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the utility model provides an industrial calcium carbonate preparation technology, it has used a multistage screening installation, and this multistage screening installation includes bottom plate, screening chamber, sieving mechanism, transfer device and band conveyer, adopts above-mentioned multistage screening installation to carry out the concrete process flow of preparation as follows to industrial calcium carbonate:
s1, crushing, namely crushing the large limestone by using a jaw crusher to prepare small crushed stone;
s2, multi-stage screening, namely screening the crushed stones by using multi-stage screening equipment, and sending the crushed stones with the sizes not meeting the requirements into a jaw crusher again for crushing;
s3, grinding: grinding the crushed stone with the size meeting the requirement after the treatment of S2 by using an European style pulverizer, and grading by using a powder concentrator;
s4, separation and collection: after powder selection, the coarse powder returns to the European flour mill for grinding again, and the fine powder and air enter a bag type dust collector together;
s5, packaging of finished products: taking the fine powder out of the bag type dust remover to prepare a limestone powder finished product, and packaging according to a certain weight;
the screening chamber is arranged in the middle of the upper end of the bottom plate, the screening device is arranged in the screening chamber, the outer wall of the screening chamber is connected with the side wall of the transfer device, the transfer device is arranged on the bottom plate, a material conveying port is formed in the lower end of the screening chamber, a belt conveyor is arranged in the material conveying port to convey crushed stones subjected to multistage screening into the pulverizer for grinding, two discharge ports are formed in the left side wall and the right side wall of the screening chamber respectively, the discharge ports formed in the left side wall and the right side wall of the screening chamber are arranged in a vertically staggered mode, lifting grooves are formed in the lower ends of the discharge ports and communicated;
the screening device comprises a rotating mechanism, a rotating rod, a screen plate, a baffle plate, a reset spring and a convex block, wherein the rotating mechanism is arranged on the outer wall of the screening chamber, the rotating rod is arranged at the rear side of the rotating mechanism, the number of the rotating rods is four, the front end of the rotating rod is connected with the rotating mechanism, the rear end of the rotating rod is arranged on the inner wall of the screening chamber through a bearing, the screen plate is arranged in the middle of the rotating rod, the left end and the right end of the screen plate are tightly attached to the inner wall of the screening chamber, the baffle plate is arranged on one side of the screen plate, the baffle plate is arranged in a lifting groove through a sliding fit mode, the reset spring is connected between the lower; drive the sieve of installing on the dwang through slewing mechanism and carry out reciprocating swing, make the rubble that falls on the sieve can evenly distributed, the lug of striker plate outer installation receives the ascending pulling force of flange and unable downstream simultaneously, consequently, the striker plate can shelter from the discharge gate, avoid carrying out the condition emergence that the rubble just directly dropped from the discharge gate completely at sieve swing in-process screening work, reach certain length back when the screening time, the lug contacts with the flange minimum, the striker plate landing is to its up end and discharge gate terminal surface coincidence mutually under its terminal surface, the rubble that size did not reach the requirement this moment just can fall into the belt conveyor that sets up on the transfer device from the discharge gate, in order to carry out crushing operation again.
The transfer device comprises a first supporting plate, a second supporting plate, a belt conveyor and flanges, wherein the first supporting plate and the second supporting plate are respectively arranged on the left side and the right side of the bottom plate; the belt conveyor can carry the rubble that the size is not up to standard again to in the jaw breaker, in order to carry out the breakage once more to the rubble, guarantee that the rubble size can satisfy the demands, in the belt conveyor operation process, the flange up end keeps in contact with the lug lower extreme throughout, when the lug lower extreme contacts with flange highest point, the striker plate that is connected with the lug can't landing downwards, consequently, can shelter from the discharge gate, when lug lower extreme and flange lowest point contact, the striker plate landing is to lowest, the discharge gate is not sheltered from this moment, size substandard rubble alright follow the discharge gate and fall to the belt conveyor on.
Preferably, the rotating mechanism comprises a rotating motor, a rotating cam, a lifting plate, a connecting frame, a lifting rack and a rotating gear, the number of the rotating motors is two, the two rotating motors are respectively positioned at the left side and the right side of the screening chamber and are arranged in a vertically staggered manner, the rotating motors are arranged on the outer wall of the screening chamber through motor bases, output shafts of the rotating motors are connected with the front ends of the rotating cams, the rear ends of the rotating cams are arranged on the inner wall of the screening chamber through bearings, the lower ends of the rotating cams are connected with the upper ends of the lifting plate through a sliding fit mode, the inner sides of the lifting plate are connected with the outer sides of the connecting frame, the connecting frame is of a transverse U-shaped structure, the connecting frame is arranged on the outer wall of the screening chamber through a sliding fit mode, the lifting racks are symmetrically arranged at the upper end and the lower end of the inner side of the, the rotating gear is arranged on the outer wall of the screening chamber through a bearing, and the rear end of the rotating gear is connected with the front end of the rotating rod; drive through driving motor and rotate the cam and carry out reciprocating motion, rotate the cam and rotate the in-process and can drive the link through the lifter plate and carry out reciprocal linear motion from top to bottom, make the lifting rack can drive the running gear and carry out positive and negative reciprocating rotation, and then drive the sieve of installing on the dwang and carry out reciprocal swing, make rubble on the sieve can evenly distributed, be favorable to carrying out comprehensive screening to the rubble, avoid appearing because the rubble piles up in a department and lead to can't carrying out the condition of screening to the rubble that is located rubble heap upper portion.
Preferably, the sieve plate comprises a frame body, sieve screens and fixing screws, the frame body is of a transverse structure in a shape like a Chinese character 'ri', the middle part of the frame body is connected with the rotating rod, the sieve screens are mounted at the upper end of the frame body through the fixing screws, and the sizes of the sieve pores of the sieve screens arranged in the four sieve plates are gradually reduced from top to bottom; the screen can be taken out without integrally disassembling the screen plate, and the screen is conveniently cleaned, maintained or replaced regularly.
Preferably, four sieve plates arranged in the screening device are integrally arranged in a W-shaped structure, and compared with a mode of parallel arrangement in the same direction, the whole height is reduced, and the occupied space can be effectively saved.
Preferably, striker plate up end is the inclined plane structure the same with discharge gate lower extreme terminal surface inclination for after the striker plate descends to the lower extreme, striker plate upper end can coincide mutually with the discharge gate lower extreme, can not lead to the fact the hindrance to the whereabouts of rubble.
Preferably, the upper ends of the first support plate and the second support plate are inclined surface structures with gradually increasing heights from outside to inside, so that the situation that the crushed stones splash outwards can be effectively prevented.
Preferably, the upper end surface of the retaining edge is of a wave-shaped structure, and the height difference between the highest point and the lowest point of the retaining edge is equal to the height difference between the upper end surface of the material baffle and the lower end surface of the inner wall of the discharge hole.
Preferably, when the moving distance of the conveying belt on the belt conveyor is equal to the distance between the highest point of the flange and the lowest point closest to the highest point, the number of rotation turns of the rotating gear is more than two; make before the rubble can fall down from the discharge gate, the sieve reciprocal swing many times to guarantee that the rubble distributes evenly, improve the effect of screening, avoid taking place because of the screening is incomplete to make the rubble that the size has reached standard still remain in the sieve upper end and by transporting back jaw breaker and carry out the reprocess, finally lead to the condition that jaw breaker's effective handling efficiency reduces.
Preferably, the rotating cam is connected with the adjusting end through a bolt for the fixed end and the adjusting end, and the distance between the fixed end and the adjusting end is adjusted to achieve the aim of adjusting the range of the lifting plate driven by the driving cam to move up and down, so that the swing amplitude of the sieve plate can be changed finally.
The invention has the beneficial effects that:
1. the preparation process of the industrial calcium carbonate provided by the invention uses a multi-stage screening device, the crushed stones are graded and screened through a plurality of sieve plates which are staggered up and down, the crushed stones with qualified sizes directly enter a subsequent grinding process, and the crushed stones with unqualified sizes are classified and conveyed according to different sizes, so that the crushing device can perform re-crushing treatment on the crushed stones in a targeted manner, and compared with a crushing mode in which the crushed stones with larger size difference are mixed together, the crushing efficiency can be obviously improved.
2. According to the screening device provided by the invention, the screen plate arranged on the rotating rod is driven by the rotating mechanism to reciprocate, so that broken stones falling on the screen plate can be uniformly distributed, and meanwhile, the convex block arranged outside the baffle plate cannot move downwards due to the upward pulling force of the flange, so that the baffle plate can shield the discharge hole, and the situation that the broken stones directly fall from the discharge hole when the screening work is not completely carried out in the swinging process of the screen plate is avoided.
3. The auxiliary mechanism arranged in the invention can drive the sieve plate arranged on the rotating rod to swing back and forth, so that the crushed stones on the sieve plate can be uniformly distributed, the crushed stones can be screened comprehensively, and the condition that the crushed stones on the upper part of the crushed stone pile can not be screened due to the fact that the crushed stones are accumulated at one position is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a front cross-sectional view of the core multi-stage screening apparatus of the present invention;
FIG. 3 is a front view of the screening chamber and screening apparatus of the present invention;
fig. 4 is a top view of a screen panel of the present invention;
FIG. 5 is a left side view of the belt conveyor and retaining edge of the present invention;
fig. 6 is an enlarged view of the portion a of fig. 2 according to the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, a process for preparing industrial calcium carbonate uses a multi-stage screening device, which comprises a bottom plate 1, a screening chamber 2, a screening device 3, a transfer device 4 and a belt conveyor 5, and the specific process flow for preparing industrial calcium carbonate by using the multi-stage screening device is as follows:
s1, crushing, namely crushing the large limestone by using a jaw crusher to prepare small crushed stone;
s2, multi-stage screening, namely screening the crushed stones by using multi-stage screening equipment, and sending the crushed stones with the sizes not meeting the requirements into a jaw crusher again for crushing;
s3, grinding: grinding the crushed stone with the size meeting the requirement after the treatment of S2 by using an European style pulverizer, and grading by using a powder concentrator;
s4, separation and collection: after powder selection, the coarse powder returns to the European flour mill for grinding again, and the fine powder and air enter a bag type dust collector together;
s5, packaging of finished products: taking the fine powder out of the bag type dust remover to prepare a limestone powder finished product, and packaging according to a certain weight;
the middle part of the upper end of the bottom plate 1 is provided with a screening chamber 2, a screening device 3 is arranged in the screening chamber 2, the outer wall of the screening chamber 2 is connected with the side wall of a transfer device 4, the transfer device 4 is arranged on the bottom plate 1, the lower end of the screening chamber 2 is provided with a material conveying port, a belt conveyor 5 is arranged in the material conveying port to convey crushed stones subjected to multi-stage screening into a pulverizer for grinding, the left side wall and the right side wall of the screening chamber 2 are both provided with two discharge ports, the discharge ports formed on the left side wall and the right side wall of the screening chamber 2 are arranged in a vertically staggered manner, the lower ends of the discharge ports are provided with lifting grooves;
the screening device 3 comprises a rotating mechanism 31, rotating rods 32, a screen plate 33, a material baffle plate 34, a return spring 35 and a bump 36, wherein the rotating mechanism 31 is installed on the outer wall of the screening chamber 2, the rotating rods 32 are arranged on the rear side of the rotating mechanism 31, the number of the rotating rods 32 is four, the front end of each rotating rod 32 is connected with the corresponding rotating mechanism 31, the rear end of each rotating rod 32 is installed on the inner wall of the screening chamber 2 through a bearing, the screen plate 33 is installed in the middle of each rotating rod 32, the left end and the right end of each screen plate 33 are tightly attached to the inner wall of the screening chamber 2, the material baffle plate 34 is arranged on one side of each screen plate 33, the material baffle plate 34 is installed in a lifting groove in a sliding fit mode, the return spring 35 is connected between the lower end of each material baffle; drive the sieve 33 of installing on dwang 32 through slewing mechanism 31 and carry out reciprocating swing, make the rubble that falls on sieve 33 can evenly distributed, lug 36 of striker plate 34 outer installation receives the ascending pulling force of flange 44 and unable downstream simultaneously, consequently striker plate 34 can shelter from the discharge gate, avoid carrying out the condition emergence that the rubble just directly dropped from the discharge gate directly at sieve 33 swing in-process screening work, reach certain length back when the screening time, lug 36 contacts with flange 44 the minimum, striker plate 34 landing to its up end and discharge gate terminal surface coincide mutually down, the rubble that the size did not reach the requirement this moment just can fall into the belt conveyor 43 that sets up on the transfer device 4 from the discharge gate, in order to carry out crushing operation again.
The rotating mechanism 31 comprises two rotating motors 311, two rotating cams 312, a lifting plate 313, a connecting frame 314, a lifting rack 315 and a rotating gear 316, the number of the rotating motors 311 is two, the two rotating motors 311 are respectively positioned at the left side and the right side of the screening chamber 2, the two rotating motors 311 are arranged in a vertically staggered manner, the rotating motors 311 are arranged on the outer wall of the screening chamber 2 through motor bases, the output shafts of the rotating motors 311 are connected with the front ends of the rotating cams 312, the rear ends of the rotating cams 312 are arranged on the inner wall of the screening chamber 2 through bearings, the lower ends of the rotating cams 312 are connected with the upper ends of the lifting plate 313 through a sliding fit manner, the inner side of the lifting plate 313 is connected with the outer side of the connecting frame 314, the connecting frame 314 is of a transverse U-shaped structure, the connecting frame 314 is arranged on the outer wall of the screening chamber 2 through a sliding fit manner, all the sections are connected through bolts, the inner side of the lifting rack 315 is meshed with the outer side of the rotating gear 316, the rotating gear 316 is installed on the outer wall of the screening chamber 2 through a bearing, the rear end of the rotating gear 316 is connected with the front end of the rotating rod 32, and the four screen plates 33 arranged in the screening device 3 are integrally arranged in a W-shaped structure, so that the overall height is reduced and the occupied space can be effectively saved compared with a mode of parallel arrangement in the same direction; drive through driving motor and rotate cam 312 and carry out reciprocating motion, can drive link 314 through lifter plate 313 and carry out reciprocating linear motion from top to bottom rotating cam 312 rotates the in-process, make lifting rack 315 can drive rotating gear 316 and carry out positive and negative reciprocating motion, and then drive sieve 33 of installing on dwang 32 and carry out reciprocating motion, make rubble on the sieve 33 can evenly distributed, be favorable to carrying out comprehensive screening to the rubble, avoid appearing because the rubble is piled up in a department and lead to unable condition of screening to the rubble that is located rubble heap upper portion.
The sieve plates 33 comprise a frame body 331, a screen 332 and fixing screws 333, the frame body 331 is in a transverse reversed Y-shaped structure, the middle part of the frame body 331 is connected with the rotating rod 32, the screen 332 is mounted at the upper end of the frame body 331 through the fixing screws 333, and the sizes of the screen holes of the screen 332 arranged in the four sieve plates 33 are gradually reduced from top to bottom; the screen 332 can be taken out without integrally disassembling the screen plate 33, and the screen 332 is convenient to clean, maintain or replace regularly.
The striker plate 34 up end is the inclined plane structure the same with discharge gate lower extreme terminal surface inclination for striker plate 34 descends to the lower back, and striker plate 34 upper end can coincide mutually with the discharge gate lower extreme, can not lead to the fact the hindrance to the whereabouts of rubble.
The rotating cam 312 comprises a fixed end and an adjusting end, the fixed end and the adjusting end are connected through a bolt, the distance between the fixed end and the adjusting end is adjusted, the purpose of adjusting the range of the lifting plate 313 driven by the driving cam 312 to move up and down is achieved, and finally the swing amplitude of the sieve plate 33 can be changed.
The transfer device 4 comprises a first supporting plate 41, a second supporting plate 42, a belt conveyor 43 and flanges 44, the first supporting plate 41 and the second supporting plate 42 are respectively installed on the left side and the right side of the bottom plate 1, the belt conveyors 43 are installed between the first supporting plate 41 and the screening chamber 2 and between the second supporting plate 42 and the screening chamber 2, the positions of the belt conveyors 43 correspond to the positions of the discharge holes one by one, the belt conveyors 43 are located at the lower ends of the discharge holes, the flanges 44 are installed on the inner sides of the conveyor belts of the conveyor, and the flanges 44 are made of rubber; belt conveyor 43 can carry the rubble that the size is not up to standard in jaw breaker again, in order to carry out the breakage once more to the rubble, guarantee that the rubble size can satisfy the demands, in belt conveyor 43 operation process, flange 44 up end keeps in contact with lug 36 lower extreme throughout, when lug 36 lower extreme and the highest point contact of flange 44, striker plate 34 that is connected with lug 36 can't the landing downwards, consequently can shelter from the discharge gate, when lug 36 lower extreme and the lowest point contact of flange 44, striker plate 34 landing to the lowest, the discharge gate is not sheltered from this moment, size unqualified rubble alright follow the discharge gate and fall to belt conveyor 43 on.
The upper ends of the first supporting plate 41 and the second supporting plate 42 are both inclined surface structures with gradually increasing heights from outside to inside, so that the situation that the crushed stones splash outwards can be effectively prevented.
The upper end surface of the rib 44 is in a wave-shaped structure, and the height difference between the highest point and the lowest point of the rib 44 is equal to the height difference between the upper end surface of the striker plate 34 and the lower end surface of the inner wall of the discharge hole.
When the moving distance of the belt on the belt conveyor 43 is equal to the distance between the highest point of the rib 44 and the lowest point closest to the highest point, the number of turns of the rotating gear 316 is more than two; make before the rubble can fall down from the discharge gate, sieve 33 reciprocal swing many times to guarantee that the rubble distributes evenly, improve the effect of screening, avoid taking place because of the screening is incomplete to make the rubble that the size has reached standard still remain on sieve 33 upper end and by being transported back jaw breaker and reprocess, finally lead to the condition that jaw breaker's effective handling efficiency reduces.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides an industrial calcium carbonate preparation technology, it has used a multistage screening installation, and this multistage screening installation includes bottom plate (1), screening chamber (2), sieving mechanism (3), transfer device (4) and band conveyer (5), its characterized in that: the specific process flow for preparing the industrial calcium carbonate by adopting the multistage screening equipment is as follows:
s1, crushing, namely crushing the large limestone by using a jaw crusher to prepare small crushed stone;
s2, multi-stage screening, namely screening the crushed stones by using multi-stage screening equipment, and sending the crushed stones with the sizes not meeting the requirements into a jaw crusher again for crushing;
s3, grinding: grinding the crushed stone with the size meeting the requirement after the treatment of S2 by using an European style pulverizer, and grading by using a powder concentrator;
s4, separation and collection: after powder selection, the coarse powder returns to the European flour mill for grinding again, and the fine powder and air enter a bag type dust collector together;
s5, packaging of finished products: taking the fine powder out of the bag type dust remover to prepare a limestone powder finished product, and packaging according to a certain weight;
the screening chamber (2) is installed in the middle of the upper end of the bottom plate (1), the screening device (3) is installed in the screening chamber (2), the outer wall of the screening chamber (2) is connected with the side wall of the transfer device (4), the transfer device (4) is installed on the bottom plate (1), the lower end of the screening chamber (2) is provided with a conveying port, a belt conveyor (5) is installed in the conveying port, two discharging ports are formed in the left side wall and the right side wall of the screening chamber (2), the discharging ports formed in the left side wall and the right side wall of the screening chamber (2) are vertically staggered, the lower end of each discharging port is provided with a lifting groove, the lifting grooves are communicated with the discharging ports;
the screening device (3) comprises a rotating mechanism (31), a rotating rod (32), a screen plate (33), a material baffle plate (34), a reset spring (35) and a lug (36), wherein the rotating mechanism (31) is installed on the outer wall of a screening chamber (2), the rotating rod (32) is arranged on the rear side of the rotating mechanism (31), the number of the rotating rods (32) is four, the front end of the rotating rod (32) is connected with the rotating mechanism (31), the rear end of the rotating rod (32) is installed on the inner wall of the screening chamber (2) through a bearing, the screen plate (33) is installed in the middle of the rotating rod (32), the left end and the right end of the screen plate (33) are tightly attached to the inner wall of the screening chamber (2), the material baffle plate (34) is arranged on one side of the screen plate (33), the material baffle plate (34) is installed in a lifting groove in a sliding fit mode, the reset spring (35) is connected between the, the lower end of the lug (36) is tightly attached to the upper end of the transfer device (4);
transfer device (4) are including backup pad (41) No. one, No. two backup pads (42), belt conveyor (43) and flange (44), install respectively in bottom plate (1) the left and right sides with No. two backup pads (42) backup pad (41), all install belt conveyor (43) between backup pad (41) and screening chamber (2) and No. two backup pads (42) and screening chamber (2), belt conveyor (43) position and discharge gate position one-to-one, and belt conveyor (43) are located the discharge gate lower extreme, it installs flange (44) to drive conveyer belt inboard, flange (44) are the rubber material.
2. The process for preparing industrial calcium carbonate according to claim 1, wherein the process comprises the following steps: the rotating mechanism (31) comprises
The screening machine comprises rotating motors (311), rotating cams (312), lifting plates (313), a connecting frame (314), lifting racks (315) and rotating gears (316), wherein the number of the rotating motors (311) is two, the two rotating motors (311) are respectively positioned at the left side and the right side of a screening chamber (2), the two rotating motors (311) are arranged in a vertically staggered manner, the rotating motors (311) are arranged on the outer wall of the screening chamber (2) through motor seats, the output shafts of the rotating motors (311) are connected with the front ends of the rotating cams (312), the rear ends of the rotating cams (312) are arranged on the inner wall of the screening chamber (2) through bearings, the lower ends of the rotating cams (312) are connected with the upper ends of the lifting plates (313) in a sliding fit manner, the inner sides of the lifting plates (313) are connected with the outer sides of the connecting frame (314), the connecting frame (314) is of a transverse U-shaped structure, and the connecting frame (314), lifting racks (315) are symmetrically arranged at the upper end and the lower end of the inner side of the connecting frame (314), the inner side of each lifting rack (315) is meshed with the outer side of the corresponding rotating gear (316), the corresponding rotating gear (316) is arranged on the outer wall of the screening chamber (2) through a bearing, and the rear end of the corresponding rotating gear (316) is connected with the front end of the corresponding rotating rod (32).
3. The process for preparing industrial calcium carbonate according to claim 1, wherein the process comprises the following steps: the screen plate (33) comprises a frame
The screen frame comprises a frame body (331), a screen (332) and fixing screws (333), wherein the frame body (331) is of a transverse reversed Y-shaped structure, the middle part of the frame body (331) is connected with a rotating rod (32), the screen (332) is installed at the upper end of the frame body (331) through the fixing screws (333), and the sizes of screen holes of the screen (332) arranged in four screen plates (33) are gradually reduced from top to bottom.
4. The process for preparing industrial calcium carbonate according to claim 1, wherein the process comprises the following steps: four sieve plates (33) arranged in the screening device (3) are integrally arranged in a W-shaped structure.
5. The process for preparing industrial calcium carbonate according to claim 1, wherein the process comprises the following steps: the upper end face of the material baffle plate (34) is of an inclined plane structure with the same inclined angle as the lower end face of the material outlet.
6. The process for preparing industrial calcium carbonate according to claim 1, wherein the process comprises the following steps: the upper ends of the first support plate (41) and the second support plate (42) are both inclined surface structures with gradually increasing heights from outside to inside.
7. The process for preparing industrial calcium carbonate according to claim 1, wherein the process comprises the following steps: the upper end surface of the retaining edge (44) is of a wave-shaped structure, and the height difference between the highest point and the lowest point of the retaining edge (44) is equal to the height difference between the upper end surface of the striker plate (34) and the lower end surface of the inner wall of the discharge hole.
8. The process for preparing industrial calcium carbonate according to claim 2, wherein: when the moving distance of the conveying belt on the belt conveyor (43) is equal to the distance between the highest point of the rib (44) and the lowest point closest to the highest point, the number of turns of the turning gear (316) is more than two.
9. The process for preparing industrial calcium carbonate according to claim 2, wherein: the rotating cam (312) comprises a fixed end and an adjusting end, and the fixed end and the adjusting end are connected through a bolt.
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| CN114103285A (en) * | 2021-11-05 | 2022-03-01 | 广东丰能智慧科技有限公司 | Plastic course particle surface layer capable of being fadeless |
| CN114669353B (en) * | 2022-03-25 | 2022-12-09 | 柞水县宝华矿业有限公司 | Processing method of barite powder |
| CN114653583B (en) * | 2022-03-31 | 2023-11-21 | 贺州学院 | Artificial marble waste powder screening device and use method |
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| CN205463157U (en) * | 2016-03-21 | 2016-08-17 | 寇坤 | Seed screening machine |
| CN209035004U (en) * | 2018-08-07 | 2019-06-28 | 浙江德立坤链传动有限公司 | A kind of automation chain blows catcher |
| CN209174334U (en) * | 2018-09-07 | 2019-07-30 | 登封市少林刚玉有限公司 | A kind of pro-molten refining slag ore materials screening machine |
| CN209810279U (en) * | 2019-02-08 | 2019-12-20 | 郴州市金鼎矿山设备制造有限公司 | Mineral aggregate screening equipment |
| CN209635456U (en) * | 2019-03-06 | 2019-11-15 | 深圳华制智能制造技术有限公司 | A kind of material flows automation equipment |
| CN110015513B (en) * | 2019-03-08 | 2020-09-22 | 北京沄汇智能科技有限公司 | Material particle cooking device |
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