CN112317095B

CN112317095B - Continuous batching and feeding integrated system for cement production

Info

Publication number: CN112317095B
Application number: CN202011065214.9A
Authority: CN
Inventors: 周国华; 王宝裕; 王家普; 陈茂强
Original assignee: Guangde Dushan South Cement Co ltd
Current assignee: Guangde Dushan South Cement Co ltd
Priority date: 2020-10-01
Filing date: 2020-10-01
Publication date: 2021-11-09
Anticipated expiration: 2040-10-01
Also published as: CN112317095A

Abstract

The invention provides a continuous batching and feeding integrated system for cement production, which comprises a conveying unit, four raw material batching stations and a feeding control unit, wherein the feeding control unit is used for synchronously controlling the intermittent feeding and discharging of the four raw material batching stations, so that the smooth process of crushing materials entering the raw material batching stations is ensured, and the material blockage caused by material accumulation is avoided; the screening pre-crushing unit, the secondary crushing assembly and the crushing unit in the raw material batching station are used for carrying out three-stage crushing on the materials, so that the consistency of the sizes of the particles flowing out of the materials is improved, and the weight of the materials flowing out in unit time is ensured to be equal; the hopper unit and the vibrating motor which are designed in a split mode are utilized, the phenomenon that materials are accumulated on the inner surface of the lower hopper to influence the discharging effect is avoided, the falling material quality in unit area is guaranteed to be equal during continuous discharging, accordingly, the final proportion is guaranteed to meet the process requirements, the yield of cement clinker is improved, the occurrence of blockage is reduced, and the production efficiency is improved.

Description

Continuous batching and feeding integrated system for cement production

Technical Field

The invention relates to the technical field of cement production equipment, in particular to a continuous batching and feeding integrated system for cement production.

Background

The main production flow of the cement comprises crushing, homogenizing, blending and grinding to finish the production of raw material powder; and calcining the raw material powder to obtain hydrated lime. In the blending process, limestone, iron powder, shale, clay and the like are proportioned according to a certain proportion and then are transmitted into a ball mill for milling, wherein the proportioning has important influence on the subsequent cement quality.

The batching and feeding system of the existing blending process is that a plurality of feeding bins transmit materials to a conveying belt simultaneously, the materials on the conveying belt are transmitted to a ball milling process by the conveying belt, but when one material bin is blocked or broken, other material bins continue to supply materials, so that the final proportion cannot meet the process requirements, the stability coefficient (KFUI) of the raw materials entering the kiln is seriously too high, the calcination of the kiln is adversely affected, the strength of clinker leaving the kiln is unstable, the consumption of cement clinker is influenced, and when the bin is blocked, the cleaning is difficult, the workload is large, the shutdown influences the production.

Disclosure of Invention

One of the purposes of the invention is to provide a continuous batching and feeding integrated system for cement production aiming at the defects of the prior art, wherein a feeding control unit is utilized to synchronously control the intermittent feeding and discharging of a plurality of raw material batching stations, so that the smooth process of the material crushing process in the raw material batching stations is ensured, and the material blockage caused by material accumulation is avoided; the screening pre-crushing unit, the secondary crushing assembly and the crushing unit in the raw material batching station are used for carrying out three-stage crushing on the materials, so that the consistency of the sizes of the particles flowing out of the materials is improved, and the weight of the materials flowing out in unit time is ensured to be equal; the hopper unit of split type design and the vibrating motor arranged on the hopper are utilized to avoid the material from being accumulated on the inner surface of the hopper under the influence on the discharging effect, and the falling material quality in unit area is ensured to be equal during continuous discharging, so that the final ratio is ensured to meet the process requirement, the yield of cement clinker is improved, the occurrence of blockage is reduced, and the production efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme:

a cement production continuous batching and feeding integrated system comprises a conveying unit, and is characterized by also comprising a plurality of raw material batching stations and a feeding control unit, wherein the raw material batching stations are sequentially arranged above the conveying unit; the raw material batching stations respectively comprise hopper units of an upper split type structure and a lower split type structure, and each hopper unit comprises an upper hopper and a lower hopper; the lower hopper is hung below the upper hopper through a flexible piece; a baffle is hinged at an outlet at the bottom of the discharging hopper;

the feed control unit includes:

the third driving unit is arranged on one side of the raw material batching station positioned on the outer side through a connecting frame and comprises a speed reducer connected with a hopper unit of the raw material batching station, a tooth-missing gear arranged at the output end of the top of the speed reducer, a worm arranged at the output end of the bottom of the speed reducer and a turbine in rotating fit with the worm, and the turbine is arranged at the bottom of the connecting frame and is connected with a cam through a rotating shaft;

the feeding switch assembly is arranged at the top of the feeding hopper in a sliding manner; the feeding switch assembly comprises a transmission part and a material baffle plate, wherein the transmission part is symmetrically provided with racks on the inner wall, the material baffle plate is connected with the transmission part and penetrates through a plurality of raw material batching stations, and openings corresponding to the feeding holes of the raw material batching stations are uniformly distributed on the material baffle plate;

the discharging switch assembly comprises support rods connected with the baffles in the raw material batching stations and connecting rods rotatably connected with one ends of the support rods; the connecting rod is rotationally connected with the cam;

the raw material batching station further comprises: the screening and crushing device comprises two groups of screening and pre-crushing units which are symmetrically arranged in the feeding hopper, wherein a primary screening and crushing space is formed between the two groups of screening and pre-crushing units, and a secondary crushing space is formed between each group of screening and pre-crushing units and the inner wall of the feeding hopper; each group of screening pre-crushing units comprises:

the screening mounting frame is fixedly connected with the feeding hopper; one side surface of the groove is obliquely arranged, and one side opposite to the oblique side surface is provided with a continuous concave-convex track groove;

the conveying belt is arranged at the periphery of the screening mounting frame, and conveying teeth a are uniformly distributed on the inner side of the conveying belt in the width direction and close to the two side edge parts in the circumferential direction;

the upper guide assembly is arranged at a plurality of corners of the upper end of the screening mounting frame and comprises a plurality of guide pieces a, and each guide piece a comprises a support a connected with the screening mounting frame and a guide roller a which is rotatably connected with the support a and is arranged in contact with the inner side of the conveying belt;

the lower guide assembly is arranged at a plurality of corners of the lower end of the screening mounting frame and comprises a plurality of guide pieces b, and each guide piece b comprises a support b connected with the screening mounting frame and a guide roller b which is rotatably connected with the support b and is arranged in contact with the inner side of the conveying belt;

the support assemblies are uniformly distributed along the circumferential direction of the screening mounting frame, and each support assembly comprises a plurality of support pieces uniformly distributed along the width direction of the screening mounting frame;

the first driving unit is arranged in the screening mounting frame and comprises a first driving motor and a chain wheel assembly connected with the output end of the first driving motor; the chain wheel assembly is in transmission connection with the two guide pieces a arranged on one side of the screening mounting frame;

the device comprises a plurality of groups of secondary crushing assemblies, a plurality of groups of secondary crushing assemblies and a plurality of rollers, wherein the secondary crushing assemblies are arranged on a conveying belt in a sliding mode and are uniformly distributed along the circumferential direction of the conveying belt, each group of secondary crushing assemblies respectively comprise a plurality of secondary crushing units uniformly distributed along the width direction of the conveying belt, and each secondary crushing unit comprises a crushing needle in sliding fit with the conveying belt, a spring sleeved on the crushing needle and a rotating piece arranged at one end of the crushing needle; one end of the spring is connected with one end of the crushing needle, and the other end of the spring is connected with the conveying belt; the rotating piece is always in contact with the side face of the screening mounting rack; the secondary crushing units of each group of secondary crushing assemblies and the supporting pieces in each group of supporting assemblies are arranged in a staggered mode along the width direction of the conveying belt; and

and the two groups of crushing units are arranged in the feeding hopper, are respectively and correspondingly positioned below the secondary crushing space and are driven to rotate by the second driving unit.

As an improvement, the upper end part of the connecting frame is provided with a guide sliding rail which is connected with the transmission part in a sliding fit manner.

As an improvement, the screening mounting frame is provided with a plurality of supporting assemblies uniformly distributed on the side surface provided with the track grooves and positioned at the bulges between the two adjacent track grooves.

As a modification, each of the support members includes a support c coupled to the screen mounting frame and a support roller rotatably coupled to the support c and disposed in contact with an inner side of the conveyor belt.

As an improvement, the outer circumferential surface of the guide roller a is provided with conveying teeth b matched with the conveying teeth a; and the outer circumferential surface of the guide roller b is provided with conveying teeth c matched with the conveying teeth a.

As an improvement, the primary screening and crushing space is a V-shaped structure formed between two conveying belts, and crushing needle heads on two sides of the bottommost end of the V shape are arranged in a contact manner; and the distance H between adjacent crushing needles in each group of secondary crushing assemblies is matched with the material particle size required by the process.

As an improvement, two supporting tables are symmetrically arranged in the feeding hopper, the rotating shaft penetrates through the supporting tables, a material channel a is formed between the two supporting tables, and a channel b is formed between the other side of each supporting table and the inner wall of the feeding hopper.

As a modification, the side surface of the screening mounting frame is inclined at an angle beta ranging from 60 to 85 degrees.

As an improvement, the raw material batching station further comprises a vibration motor, and the vibration motor is arranged on one side of the discharging hopper.

As an improvement, one end of the baffle is connected with the blanking hopper through an elastic piece; and a signal switch is arranged on one side of the bottom of the discharging hopper and is matched with a signal plate arranged on one side of the baffle.

The invention has the beneficial effects that:

(1) the batch type feeding and discharging device synchronously controls the batch type feeding and discharging of a plurality of raw material batching stations by using the feeding control unit, and materials are intermittently sprayed on the conveying unit in the discharging process, so that the materials flowing out of the raw material batching stations are uniformly sprayed at the same position, the ratio of a single material pile meets the process requirement, and the materials entering the ball mill meet the ratio requirement; the operation of the conveying unit is controlled by a counting controller, so that the mixed single-pile materials enter the ball mill according to the quantity, the material proportion in the ball mill meets the process requirement, the proportioning accuracy is improved, the stability coefficient (KFUI) of raw materials entering the kiln is reduced, and the yield of cement clinker is improved;

(2) according to the invention, the screening pre-crushing unit is used for lifting and screening materials, and when the screened materials are transported to the highest point and are transported downwards, the pre-crushing assembly is matched with the concave-convex track arranged on the screening mounting frame, so that the intermittent crushing of large materials is realized, and the secondary crushing effect is improved; the crushing unit arranged below the screening pre-crushing unit is utilized to perform secondary crushing on the massive materials, so that the sizes of the particles of the flowing materials are uniform, the weight difference of the unit volume of the falling materials in the continuous production process is reduced, the matching accuracy is improved, the stability coefficient (KFUI) of raw materials entering a kiln is reduced, and the yield of cement clinker is improved;

(3) according to the invention, the hopper unit with a split design and the vibrating motor arranged on the blanking hopper are utilized, the baffle is hinged to the bottom of the blanking hopper and the signal switch is arranged on one side of the bottom of the blanking hopper, when materials are stacked, the baffle is pulled back by the elastic piece and transmits a signal to the signal switch, the vibrating motor works, the blocked materials are vibrated to fall down, the materials are reduced from being stacked on the inner surface of the blanking hopper, the friction force is reduced by utilizing the polyethylene plate arranged on the inner wall of the blanking hopper, the risk of material blocking is reduced, the problem that the materials are difficult to clean after being blocked is solved, the labor intensity of personnel is reduced, and the field sanitary environment is improved;

(4) according to the invention, the transmission belt is tightened and rotated by utilizing the matching of the upper guide component, the lower guide component and the support component, so that the smooth sliding of the secondary crushing component in the secondary crushing space is ensured;

in conclusion, the invention has the advantages of low labor intensity of personnel, simple structure, no material blockage, uniform falling material particles, small mass difference of unit volume, high proportioning accuracy and the like.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention showing a partial enlarged structure at the position I;

FIG. 3 is a schematic view of the present invention at position II with a partially enlarged structure;

FIG. 4 is a schematic view of the feed switch assembly of the present invention;

FIG. 5 is a schematic view of the overall structure of the raw material batching station according to the present invention;

FIG. 6 is a schematic view showing the internal structure of the raw material batching station according to the first embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of a screening pre-crushing unit according to the present invention;

FIG. 8 is a schematic view of the internal structure of the raw material batching station of the present invention;

FIG. 9 is an enlarged view of a portion of the present invention at A;

FIG. 10 is a schematic view of the mounting positions of the upper and lower guide assemblies of the present invention;

FIG. 11 is a schematic view of a guide a according to the present invention;

FIG. 12 is a schematic view of the structure of a guide b according to the present invention;

FIG. 13 is a schematic view of the mounting position of the support assembly of the present invention;

FIG. 14 is a schematic view of a support structure according to the present invention;

FIG. 15 is a schematic view of the arrangement of the secondary crushing unit and the support member according to the present invention;

FIG. 16 is a schematic structural view of a two-stage crushing unit according to the present invention;

FIG. 17 is a schematic structural view of an output gear set of the present invention;

FIG. 18 is a schematic view of the internal structure of the feeding hopper of the present invention;

FIG. 19 is a schematic view of the raw meal batching station in use according to the present invention;

FIG. 20 is a schematic view of the feed process of the raw meal batching plant according to the present invention;

fig. 21 is a schematic diagram of the discharging process structure of the raw material batching station in the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

As shown in fig. 1, a continuous batching and feeding integrated system for cement production comprises a conveying unit 200, a plurality of raw material batching stations 100 arranged above the conveying unit 200 in sequence, and a feeding control unit 300 for controlling the plurality of raw material batching stations 100 to realize intermittent feeding; the raw material batching stations 100 respectively comprise hopper units 2 of an upper-lower split structure, and each hopper unit 2 comprises an upper hopper 21 and a lower hopper 22; the lower hopper 22 is hung below the upper hopper 21 through a flexible piece 23; a baffle 221 is hinged at the bottom outlet of the discharging hopper 22; wherein the flexible member 23 can be selected from a nylon belt, a chain, etc., preferably a chain; the connecting part of the upper hopper 21 and the lower hopper 22 is connected through the dustproof cloth 24, so that the problem that the field working environment is poor due to the fact that dust is easy to appear at the connecting part is solved; the inner wall of the blanking hopper 22 is provided with a polyethylene plate 25, so that the friction force of the inner wall of the blanking hopper is reduced, the passing smoothness of materials is improved, and the phenomenon of material blockage is avoided;

as shown in fig. 1 to 4, the feed control unit 300 includes:

a third driving unit 61, wherein the third driving unit 61 is arranged at one side of the raw material batching station 100 positioned at the outer side through a connecting frame 60, and comprises a speed reducer 611 connected with the hopper unit 2 of the raw material batching station 100, a tooth-missing gear 612 arranged at the top output end of the speed reducer 611, a worm 614 arranged at the bottom output end of the speed reducer 611, and a turbine 613 rotationally matched with the worm 614, and the turbine 613 is arranged at the bottom of the connecting frame 60 and is connected with a cam 615 through a rotating shaft;

the feeding switch assembly 62 is arranged at the top of the feeding hopper 21 in a sliding manner; the feeding switch assembly 62 comprises a transmission member 621 with racks symmetrically arranged on the inner wall and a striker plate 622 connected with the transmission member 621 and penetrating through a plurality of raw material batching stations 100, wherein openings 623 corresponding to the feeding ports of the plurality of raw material batching stations 100 are uniformly distributed on the striker plate 622; the feeding switch assembly 62 is moved left and right to realize the opening and closing of the feeding position of the feeding hopper 21;

the discharging switch assembly 63 comprises support rods 632 connected with the baffles 221 in the raw material batching stations 100 and a connecting rod 631 rotatably connected with one end of each support rod 632; the link 631 is rotatably connected with the cam 615; when the cam 615 rotates, the discharging switch assembly 63 is driven to move synchronously, and the baffle 221 swings up and down, so that the intermittent discharging of the hopper unit 2 is realized;

it should be noted that, as shown in fig. 21, when the feeding switch assembly 62 moves to the left, the opening 622 is misaligned with the feeding ports of the plurality of raw material batching stations 100 to close the feeding ports, and at this time, the discharging switch assembly 63 controls the baffle 221 to swing downwards to discharge;

as shown in fig. 20, when the feeding switch assembly 62 moves to the right, the opening 622 coincides with the feeding ports of the raw material batching stations 100, so that the feeding ports are opened, the material is added to the raw material batching stations 100 for crushing, and the discharging switch assembly 63 controls the baffle 221 to swing upwards to pause discharging;

the intermittent feeding and discharging mode enables the materials falling on the conveying unit 200 to be distributed in piles, ensures that the proportion of each pile of materials meets the process requirement, and further ensures that the proportion in the final ball mill meets the process requirement;

in addition, the feeding control unit 300 further includes a counting controller, which counts the number of material piles entering the ball mill 400, and after the number of material piles enters the process requirement, the counting controller transmits a signal to the conveying unit 200 to stop the rotation of the conveying unit and return the feeding control unit 300 to the initial position, so that the discharge port of the raw material batching station 100 is closed, and the external feeding stops the feeding, thereby preventing the material from being piled up on the raw material batching station 100;

as shown in fig. 7 and 8, the raw material batching station 100 further comprises: the screening and crushing device comprises two groups of screening and pre-crushing units 3 symmetrically arranged in a feeding hopper 21, wherein a primary screening and crushing space 100 is formed between the two groups of screening and pre-crushing units 3, and a secondary crushing space 200 is formed between each group of screening and pre-crushing units 3 and the inner wall of the feeding hopper 21; each set of the screening pre-crushing units 3 includes:

the screening mounting frame 31 is fixedly connected with the feeding hopper 21; one side surface of the groove is obliquely arranged, and one side opposite to the oblique side surface is provided with a continuous concave-convex track groove 311;

the conveying belt 32 is arranged at the periphery of the screening mounting frame 31, and conveying teeth a322 are uniformly distributed on the inner side of the conveying belt 32 in the width direction and close to the two side edge parts in the circumferential direction;

an upper guide assembly 33, as shown in fig. 10 and 11, the upper guide assembly 33 is disposed at a plurality of corners of the upper end of the screen mounting frame 31, and includes a plurality of guide members a331, the guide members a331 include a support a3311 connected to the screen mounting frame 31 and a guide roller a3312 rotatably connected to the support a3311 and disposed in contact with the inner side of the conveyor belt 32;

a lower guide assembly 37, as shown in fig. 9, 10 and 12, the lower guide assembly 37 is disposed at a plurality of corners of the lower end of the screen mounting frame 31, and includes a plurality of guide members b371, and the guide members b371 include a bracket b3711 connected to the screen mounting frame 31 and a guide roller b3712 rotatably connected to the bracket b3711 and disposed in contact with the inner side of the conveyor belt 32;

as shown in fig. 13 and 14, the plurality of groups of supporting assemblies 340 are uniformly distributed along the circumferential direction of the screening mounting frame 31, and each group of supporting assemblies 340 includes a plurality of supporting members 341 uniformly distributed along the width direction of the screening mounting frame 31;

the first driving unit 35 is arranged in the screening mounting frame 31, and comprises a first driving motor 351 and a chain wheel assembly 352 connected with the output end of the first driving motor 351; the chain wheel assembly 352 is in transmission connection with the two guide pieces a331 arranged on one side of the screening mounting frame 31;

as shown in fig. 7, 15, and 16, the plurality of groups of secondary crushing assemblies 36 are slidably disposed on the conveying belt 32 and are uniformly distributed along the circumferential direction of the conveying belt 32, each group of secondary crushing assemblies 36 includes a plurality of secondary crushing units 360 uniformly distributed along the width direction of the conveying belt 32, and each secondary crushing unit 360 includes a crushing needle 361 slidably engaged with the conveying belt 32, a spring 362 sleeved on the crushing needle 361, and a rotating member 363 disposed at one end of the crushing needle 361; one end of the spring 362 is connected with one end of the crushing needle 361, and the other end thereof is connected with the conveyor belt 32; the rotating piece 363 is always in contact with the side surface of the screening mounting rack 31; the secondary crushing units 360 of each set of secondary crushing assemblies 36 and the supporters 341 of each set of supporting assemblies 340 are arranged in a staggered manner along the width direction of the conveyor belt 32, so that the running stability of the conveyor belt 32 and the gunn smoothness during crushing of the crushing needles 361 are improved, and the crushing effect is improved; and

two sets of crushing units 4, as shown in fig. 6 and 8, the two sets of crushing units 4 are disposed in the feeding hopper 21, respectively located below the secondary crushing space 200, and driven to rotate by the second driving unit 5;

it should be noted that, two sets of the crushing units 4 each include two crushing rollers 421 connected by a rotating shaft 422; the rotation directions of the two groups of crushing units are arranged oppositely inwards; the second driving unit 5 is arranged outside the feeding hopper 21;

it should be noted that, in the process of upward screening of the material in the primary screening and crushing space 100, the material is lifted by the crushing needles 361 while being screened, so as to realize the effect of primary crushing;

when the materials are conveyed to the secondary crushing space 200, the crushing needles 361 slide left and right along the tracks 311, so that the massive materials are crushed by the crushing needles 361 which are ejected outwards in the falling process, the secondary crushing effect is realized, and after the materials are crushed in multiple stages in the falling process, the massive materials are crushed more completely, the materials with uniform particles are provided for the subsequent crushing unit 4, and the crushing effect of the crushing unit 4 is improved;

as shown in fig. 17, the second driving unit 5 includes a speed reducer 51 connected to the outside of the charging hopper 21, and an output gear set 52 connected to an output end of the speed reducer 51; the output gear set 52 includes a gear a521, a gear b522, a gear c523, and a gear d 524; the gear a521 and the gear b522 are respectively connected with the two rotating shafts 422; the gear c523 is rotatably arranged on the outer side of the feeding hopper 21 and meshed with the gear a 521; the gear d524 is connected with the output end of the second driving unit 5 and is in mesh transmission with the gear c523 and the gear b522 respectively.

The upper end of the connecting frame 60 is provided with a guide slide rail 601, and the guide slide rail 601 is connected with the transmission element 621 in a sliding fit manner, so that the sliding smoothness of the transmission element 621 is improved.

As an improvement, as shown in fig. 13, the support assemblies 340 uniformly distributed on the side surface of the screening mounting frame 31 where the track grooves 311 are formed are located at the protrusion between two adjacent track grooves 311.

As a modification, as shown in fig. 14, each of the supporting members 341 includes a support c3412 connected to the screening mounting frame 31 and a supporting roller 3411 rotatably connected to the support c3412 and disposed in contact with the inner side of the conveyor belt 32;

it should be noted that, the support member 341 disposed at the protrusion has a shorter protruding end of the support c3412, so as to ensure the strength of the support member 341, make the operation of the conveyor belt 32 more stable, further ensure that the crushing needle 361 slides more smoothly during crushing, and improve the crushing effect.

As a modification, as shown in fig. 11 and 12, the outer circumferential surface of the guide roller a3312 is provided with transmission teeth b3313 matching with the transmission teeth a 322; the outer circumferential surface of the guide roller b3712 is provided with transmission teeth c3713 matching with the transmission teeth a 322.

As a modification, as shown in fig. 6 and 15, the primary screening and crushing space 100 has a V-shaped structure formed between two conveyor belts 32, and crushing needles 361 at two sides of the lowermost end of the V shape are in head contact; the distance H between adjacent crushing needles 361 in each group of secondary crushing assemblies 36 is matched with the material particle size required by the process.

As an improvement, as shown in fig. 6, two support tables 211 are symmetrically arranged in the feeding hopper 21, the rotating shaft 422 passes through the support tables 211, a material channel a212 is formed between the two support tables 211, and a channel b213 is formed between the other side of each support table 211 and the inner wall of the feeding hopper 21;

it should be noted that the materials in the channel a212 and the channel b213 are mixed in the process of falling again, and finally flow out through the bottom outlet of the blanking hopper, so that the uniformity of the particles of the flowing materials is good.

As a modification, as shown in fig. 6, the side surface of the screening mounting frame 31 is inclined at an angle β in the range of 60 to 85 °, wherein 70 ° is preferred, and the screening and passing rate of the material is good.

As a modification, as shown in fig. 6, the raw material batching station 100 further comprises a vibration motor 1, and the vibration motor 1 is arranged on one side of the lower hopper 22.

As a modification, as shown in fig. 5, one end of the baffle 221 is connected with the lower hopper 22 through an elastic member 222; a signal switch 223 is arranged on one side of the bottom of the discharging hopper 22, and the signal switch 223 is matched with a signal plate 2211 arranged on one side of the baffle 221;

it should be noted that, when the material is blocked in the lower hopper, the baffle 221 is not extruded by the material, and is reset by the elastic force of the elastic member 222, and the signal switch 223 senses the signal of the signal board 2211, so that the vibration motor 1 is turned on, the material in the lower hopper is dredged, the smooth feeding is ensured, and the production stability is improved.

In addition, a ball mill 400 is disposed at the end of the conveying unit 200 and is used for ball milling the proportioned materials.

The working process is as follows:

starting the conveying unit (200) and starting the feeding control unit (300); limestone, iron powder, shale and clay are respectively added into a plurality of raw material batching stations (100) for crushing and screening; taking shale as an example, as shown in fig. 19, shales with different particle sizes are thrown into a feed hopper 26, the shales fall to a primary screening and crushing space 100, a conveyor belt 32 drives a secondary crushing component 36 to rotate upwards for screening, large shales are clamped in a space between adjacent crushing needles 361 and lifted upwards, after the shales rotate over the highest point, the shales fall to a secondary crushing space 200, the crushing needles 361 sequentially move left and right under the action of a track 311 to realize pre-crushing of large materials, the large shales are crushed into relatively small shales through multiple pre-crushing, and the large shales are sufficiently crushed again through a crushing unit 4, so that the sizes of the outflowing shale particles are ensured to be uniform; reducing the outflow of large blocks; the small-sized shale falls to a lower hopper 22; when the blanking hopper is blocked, the baffle 221 is not extruded by the material, the baffle is reset through the elasticity of the elastic piece 222, the signal switch 223 senses the signal of the signal plate 2211, the vibration motor 1 is started, and the material in the blanking hopper is dredged to ensure smooth feeding; the feeding control unit (300) controls the feeding and discharging of a plurality of raw material batching stations (100) simultaneously, so that four materials uniformly fall onto the conveying unit (200) and are conveyed in a pile; the materials are counted by the counting controller, and a certain number of piles of the mixed materials are put into the ball mill 400 for ball milling.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A cement production continuous batching and feeding integrated system comprises a conveying unit (200), and is characterized by also comprising a plurality of raw material batching stations (100) which are arranged above the conveying unit (200) in sequence and a feeding control unit (300) which is used for controlling the raw material batching stations (100) to realize discontinuous feeding; the raw material batching stations (100) respectively comprise hopper units (2) of an upper-lower split structure, and each hopper unit (2) comprises an upper hopper (21) and a lower hopper (22); the lower hopper (22) is hung below the upper hopper (21) through a flexible piece (23); a baffle (221) is hinged at the bottom outlet of the discharging hopper (22);

the feed control unit (300) comprises:

the third driving unit (61) is arranged on one side of the raw material batching station (100) positioned on the outer side through a connecting frame (60), and comprises a speed reducer (611) connected with the hopper unit (2) of the raw material batching station (100), a tooth-missing gear (612) arranged at the top output end of the speed reducer (611), a worm (614) arranged at the bottom output end of the speed reducer (611) and a turbine (613) in rotating fit with the worm (614), wherein the turbine (613) is arranged at the bottom of the connecting frame (60) and is connected with a cam (615) through a rotating shaft;

the feeding switch assembly (62), the feeding switch assembly (62) is arranged at the top of the feeding hopper (21) in a sliding mode; the feeding switch assembly (62) comprises a transmission part (621) with racks symmetrically arranged on the inner wall and a material baffle plate (622) which is connected with the transmission part (621) and penetrates through a plurality of raw material batching stations (100), wherein openings (623) corresponding to the feeding holes of the raw material batching stations (100) are uniformly distributed on the material baffle plate (622);

the discharging switch assembly (63) comprises support rods (632) connected with the baffle plates (221) in the raw material batching stations (100) and a connecting rod (631) rotatably connected with one end of each support rod (632); the connecting rod (631) is in rotational connection with the cam (615);

the raw meal batching station (100) further comprises: the screening and crushing device comprises two groups of screening and pre-crushing units (3) which are symmetrically arranged in a feeding hopper (21), a primary screening and crushing space (100) is formed between the two groups of screening and pre-crushing units (3), and a secondary crushing space (200) is formed between each group of screening and pre-crushing units (3) and the inner wall of the feeding hopper (21); each group of screening pre-crushing units (3) comprises:

the screening mounting rack (31), the screening mounting rack (31) is fixedly connected with the feeding hopper (21); one side surface of the groove is obliquely arranged, and one side opposite to the oblique side surface is provided with a continuous concave-convex track groove (311);

the conveying belt (32) is arranged at the periphery of the screening mounting frame (31), and conveying teeth a (322) are uniformly distributed on the inner side of the conveying belt (32) in the width direction and close to the two side edge parts in the circumferential direction;

the upper guide component (33) is arranged at a plurality of corners of the upper end of the screening mounting frame (31) and comprises a plurality of guide pieces a (331), and the guide pieces a (331) comprise a support a (3311) connected with the screening mounting frame (31) and a guide roller a (3312) rotatably connected with the support a (3311) and arranged in contact with the inner side of the conveying belt (32);

the lower guide assemblies (37) are arranged at a plurality of corners of the lower end of the screening mounting frame (31) and comprise a plurality of guide pieces b (371), and each guide piece b (371) comprises a support b (3711) connected with the screening mounting frame (31) and a guide roller b (3712) which is rotatably connected with the support b (3711) and is in contact with the inner side of the conveying belt (32);

the screening mounting frame (31) comprises a plurality of groups of supporting assemblies (340), the groups of supporting assemblies (340) are uniformly distributed along the circumferential direction of the screening mounting frame (31), and each group of supporting assemblies (340) comprises a plurality of supporting pieces (341) uniformly distributed along the width direction of the screening mounting frame (31);

the first driving unit (35) is arranged in the screening mounting frame (31) and comprises a first driving motor (351) and a chain wheel assembly (352) connected with the output end of the first driving motor (351); the chain wheel assembly (352) is in transmission connection with the two guide pieces a (331) arranged on one side of the screening mounting frame (31);

the crushing device comprises a plurality of groups of secondary crushing assemblies (36), wherein the secondary crushing assemblies (36) are arranged on a conveying belt (32) in a sliding mode and are uniformly distributed along the circumferential direction of the conveying belt (32), each group of secondary crushing assemblies (36) comprises a plurality of secondary crushing units (360) uniformly distributed along the width direction of the conveying belt (32), and each secondary crushing unit (360) comprises a crushing needle (361) in sliding fit with the conveying belt (32), a spring (362) sleeved on the crushing needle (361) and a rotating piece (363) arranged at one end of the crushing needle (361); one end of the spring (362) is connected with one end of the crushing needle (361), and the other end of the spring is connected with the conveying belt (32); the rotating piece (363) is always in contact with the side face of the screening mounting rack (31); the secondary crushing units (360) of each group of secondary crushing assemblies (36) and the supporting pieces (341) in each group of supporting assemblies (340) are arranged in a staggered mode along the width direction of the conveying belt (32); and

the two groups of crushing units (4) are arranged in the feeding hopper (21), are respectively and correspondingly positioned below the secondary crushing space (200) and are driven to rotate by the second driving unit (5).

2. The continuous batching and feeding integrated system for cement production as claimed in claim 1, wherein the upper end of the connecting frame (60) is provided with a guide sliding rail (601), and the guide sliding rail (601) is connected with the transmission member (621) in a sliding fit manner.

3. The continuous batching and feeding integrated system for cement production as claimed in claim 1, wherein the supporting components (340) uniformly distributed on the side surface provided with the plurality of track grooves (311) on the screening mounting frame (31) are positioned at the convex part between two adjacent track grooves (311).

4. A cement production continuous batching and feeding integrated system according to claim 1, characterized in that each of said support members (341) comprises a support c (3412) connected to said screening mounting frame (31) and a support roller (3411) rotatably connected to said support c (3412) and arranged in contact with the inner side of said conveyor belt (32).

5. The continuous batching and feeding integrated system for cement production as claimed in claim 1, wherein the outer circumference of said guide roller a (3312) is provided with a transmission tooth b (3313) matching with the transmission tooth a (322); the outer circumferential surface of the guide roller b (3712) is provided with conveying teeth c (3713) matched with the conveying teeth a (322).

6. The cement production continuous batching and feeding integrated system as claimed in claim 1, wherein the primary screening crushing space (100) is formed by a V-shaped structure formed between two conveyor belts (32), and the heads of crushing needles (361) at two sides of the bottommost end of the V shape are arranged in contact; the distance H between adjacent crushing needles (361) in each group of secondary crushing assemblies (36) is matched with the material particle size required by the process.

7. The continuous batching and feeding integrated system for cement production as claimed in claim 1, wherein two support platforms (211) are symmetrically arranged in said feeding hopper (21), and a rotating shaft (422) is arranged through said support platforms (211); a material channel a (212) is formed between the two supporting tables (211), and a channel b (213) is formed between the other side of each supporting table (211) and the inner wall of the feeding hopper (21).

8. The integrated continuous batching and feeding system for cement production according to claim 1, characterized in that the side inclination angle β of said screening mounting frame (31) ranges from 60 ° to 85 °.

9. A continuous batching and feeding integrated system for cement production as claimed in claim 1, characterized in that said raw batching station (100) further comprises a vibrating motor (1), said vibrating motor (1) being provided at one side of said discharge hopper (22).

10. The continuous batching and feeding integrated system for cement production as claimed in claim 1, wherein one end of said baffle (221) is connected to the discharge hopper (22) through an elastic member (222); the bottom one side of lower hopper (22) is equipped with signal switch (223), signal switch (223) with locate signal board (2211) the matching setting of one side of baffle (221).