CN112275360A - Raw material batching station with stable batching function - Google Patents
Raw material batching station with stable batching function Download PDFInfo
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- CN112275360A CN112275360A CN202011065215.3A CN202011065215A CN112275360A CN 112275360 A CN112275360 A CN 112275360A CN 202011065215 A CN202011065215 A CN 202011065215A CN 112275360 A CN112275360 A CN 112275360A
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- crushing
- screening
- hopper
- mounting frame
- batching
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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
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/12—Mills with non-rotating spiked members
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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
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a raw material batching station with a stable batching function, which comprises a hopper unit, a pre-crushing unit and a secondary crushing assembly, wherein when a material is in a primary screening crushing space, the screening pre-crushing unit is used for lifting and screening the material, so that a primary crushing effect is realized; when the materials are conveyed to the secondary crushing space, the secondary crushing assembly is matched with the concave-convex track arranged on the screening mounting frame in the descending process, so that large materials are subjected to secondary crushing for many times, the crushing units arranged below the secondary crushing space are used for performing tertiary crushing on the uncrushed materials, and the sizes of the particles of the outflowing materials are uniform; the hopper unit of split type design and the vibrating motor of hopper one side have effectively solved the problem that the material is piled up, guarantee that the material quality that falls down of unit area equals when guaranteeing the continuous ejection of compact to guarantee that final ratio satisfies the technological requirement, improve cement clinker's yield, improve production efficiency.
Description
Technical Field
The invention relates to the technical field of cement production equipment, in particular to a raw material batching station with a stable batching function.
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 Chinese patent 202010306565.8 discloses an anti-blocking and anti-accumulation system of a blanking hopper, which comprises a hopper, wherein a frame is arranged on the inner wall of each side of the hopper, a plurality of hinged springs which elastically stretch in the vertical plane of the inner wall of the hopper are arranged between one side of the frame and the inner wall of the hopper, each hinged spring comprises at least one group of first support arm and second support arm which are respectively connected with the frame and the inner wall of the hopper and are positioned in the vertical plane of the wall of the hopper, a plurality of layers of flexible polyurethane vibrating plates which cover the inner wall of the hopper are arranged on the other side of the frame, the upper edges of the flexible vibrating plates are fixedly connected with the frame, at least one excitation motor which is fixedly connected is arranged at the top of the frame, the excitation frame and the inner wall of the hopper are elastically supported and connected by the hinged springs, materials falling onto the flexible vibrating plates of the frame in the blanking process under a screen are shaken, Even damage the mechanical problem, save manpower and material resources, reduce the maintenance time, satisfy the screening application demand in unmanned mine.
But the anti-blocking effect is poor to the massive material that lime stone and clay mix among this technical scheme, influences final material ratio, makes kiln raw material stability coefficient (KFUI) serious on the high side, produces adverse effect to the calcination of kiln, and kiln clinker intensity is unstable, influences cement clinker and consumes to when feed bin blockked up, the clearance is difficult, and work load is big, shuts down and influences production.
Disclosure of Invention
One of the purposes of the invention is to provide a raw material batching station with a stable batching function aiming at the defects of the prior art, when a material is in a primary screening and crushing space, a screening pre-crushing unit is used for lifting and screening the material, so as to realize a primary crushing effect; when the screened materials are transmitted to the secondary crushing space, the secondary crushing assembly is matched with the concave-convex track arranged on the screening mounting frame in the descending process, so that large materials are subjected to secondary crushing for many times, and the crushing units arranged below the secondary crushing space are used for performing tertiary crushing on the uncrushed materials, so that the sizes of the particles of the outflowing materials are uniform; 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 raw meal batching station with a stable batching function, comprising:
a hopper unit; the hopper unit is of an up-down split structure and comprises an upper hopper and a lower hopper; the lower hopper is hung below the upper hopper through a flexible piece;
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 assemblies are arranged at four corners of the upper end of the screening mounting frame and comprise four 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 assemblies are arranged at four corners of the lower end of the screening mounting frame and comprise four 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; and
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 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 support member comprises a bracket c connected with the screening mounting frame and a support roller which is rotatably connected with the bracket c and is arranged in contact with the inner side of the conveying 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 the heads of crushing needles 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 angle alpha of the two symmetrical inclined inner walls of the lower hopper ranges from 60 to 85 degrees.
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 automatic feeding device further comprises a vibration motor, and the vibration motor is arranged on one side of the discharging hopper.
As an improvement, the bottom of the discharging hopper is hinged with a baffle, and one end of the baffle is connected with the discharging 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) 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;
(2) 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, so that the plugged 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 blockage is reduced, the problem of difficult cleaning after blockage is solved, the labor intensity of personnel is reduced, and the on-site sanitary environment is improved;
(3) 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 first schematic diagram of the internal structure of the present invention;
FIG. 3 is a schematic diagram of the structure of a screening pre-crushing unit according to the present invention;
FIG. 4 is a second schematic view of the internal structure of the present invention;
FIG. 5 is an enlarged view of a portion of the present invention at A;
FIG. 6 is a schematic view of the mounting positions of the upper and lower guide assemblies of the present invention;
FIG. 7 is a schematic view of the structure of a guide member a according to the present invention;
FIG. 8 is a schematic view of the structure of a guide b according to the present invention;
FIG. 9 is a schematic view of the mounting position of the support assembly of the present invention;
FIG. 10 is a schematic view of the support structure of the present invention;
FIG. 11 is a schematic view of the arrangement of the secondary crushing unit and the support member according to the present invention;
FIG. 12 is a schematic view of the structure of a two-stage crushing unit according to the present invention;
FIG. 13 is a schematic structural view of an output gear set of the present invention;
FIG. 14 is a schematic view of the internal structure of the feeding hopper of the present invention;
FIG. 15 is a schematic view of the present invention in use.
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 and 14, a raw meal batching station with a stable batching function comprises:
a hopper unit 2; the hopper unit 2 is of an up-down split structure and 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 feed hopper 26 is arranged at the top of the feeding hopper 21; 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;
two groups of screening pre-crushing units 3 symmetrically arranged in the feeding hopper 21, as shown in fig. 3 and 4, a primary screening crushing space 100 is formed between the two groups of screening pre-crushing units 3, and a secondary crushing space 200 is formed between each group of screening 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 member 33, as shown in fig. 6 and 7, the upper guide member 33 is disposed at four corners of an upper end of the screen mounting frame 31, and includes four 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 an inner side of the conveyor belt 32;
a lower guide assembly 37, as shown in fig. 5, 6 and 8, the lower guide assembly 37 is disposed at four corners of the lower end of the screen mounting frame 31, and includes four guide members b371, where 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. 9 and 10, a 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; and
as shown in fig. 3, 11, and 12, 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 group of secondary crushing assemblies 36 and the supporting members 341 of each group of supporting assemblies 340 are arranged in a staggered manner along the width direction of the conveying belt 32, so that the running stability of the conveying belt 32 is improved, the crushing needles 361 are smoother during crushing, and the crushing effect is improved; and
two sets of crushing units 4, as shown in fig. 2 and 4, the two sets of crushing units 4 are disposed in the feeding hopper 21 and respectively located below the secondary crushing space 200 correspondingly 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. 13, the second driving unit 5 includes a speed reducer 51 connected to the outside of the loading 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.
As an improvement, as shown in fig. 9, 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. 10, 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. 7 and 8, the outer circumferential surface of the guide roller a3312 is provided with a transmission tooth b3313 matching with the transmission tooth 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. 2 and 11, 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. 2, 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. 2, the angle α 224 of the two symmetrically inclined inner walls of the lower hopper 22 is in the range of 60-85 °, preferably 73 °, which allows the material to fall more smoothly and prevents the material from being jammed.
As a modification, as shown in fig. 2, the side surface of the screening mounting frame 31 is inclined at an angle β 312 in the range of 60 to 85 °, wherein 70 ° is preferred, and the screening and passing rate of the material at the angle are good.
As shown in fig. 2, the automatic feeding device further comprises a vibration motor 1, wherein the vibration motor 1 is arranged on one side of the discharging hopper 22.
As an improvement, as shown in fig. 1, a baffle 221 is hinged at the bottom outlet of the lower hopper 22, and 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.
The working process is as follows:
taking shale as an example, as shown in fig. 15, 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 blocks materials, the baffle 221 is not extruded by the materials, the elastic force of the elastic piece 222 resets, the signal switch 223 senses the signal of the signal plate 2211, the vibration motor 1 is started, and the materials in the blanking hopper are dredged to ensure smooth feeding.
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 (10)
1. A raw meal batching station with a stable batching function, comprising:
a hopper unit (2); the hopper unit (2) is of an up-down split structure and 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);
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 components (33) are arranged at four corners of the upper end of the screening mounting frame (31) and comprise four 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 four corners of the lower end of the screening mounting frame (31) and comprise four guide pieces b (371), and each guide piece b (371) comprises a bracket b (3711) connected with the screening mounting frame (31) and a guide roller b (3712) rotatably connected with the bracket b (3711) and arranged 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); and
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 raw meal batching station with stable batching function according to claim 1, characterized in that said screen mounting frame (31) is provided with support members (340) evenly distributed on the side surface provided with said plurality of track grooves (311) at the projection between two adjacent track grooves (311).
3. A raw meal batching station with stable batching function as claimed in claim 1, characterized in that each of said supporting members (341) comprises a support c (3412) connected to said sifting 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).
4. The raw meal batching station with stable batching function as claimed in claim 1, wherein said guide roller a (3312) is provided with a conveying tooth b (3313) on its outer circumferential surface matching the conveying 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).
5. The raw material batching station with stable batching function according to claim 1, characterized in that said primary screening crushing space (100) is formed by a V-shaped structure formed between two said conveyor belts (32), the heads of the crushing needles (361) at both sides of the lowermost 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.
6. A raw meal batching station with stable batching function as claimed in claim 1, characterized in that two supporting platforms (211) are symmetrically arranged in said upper hopper (21), said rotating shaft (422) is arranged through said supporting platforms (211), a material channel a (212) is formed between two said supporting platforms (211), and the other side of the supporting platform (211) and the inner wall of said upper hopper (21) form a channel b (213).
7. A raw meal batching station with stable batching function as claimed in claim 1, characterized in that said lower hopper (22) has two symmetrically inclined inner wall angles α ranging from 60 to 85 °.
8. A raw meal batching station with stable batching function as claimed in claim 1, characterized in that said screen mounting frame (31) is inclined at a side angle β ranging from 60 to 85 °.
9. A raw meal batching station with stable batching function according to claim 1, characterized by further comprising a vibration motor (1), said vibration motor (1) being provided at one side of said lower hopper (22).
10. A raw meal batching station with stable batching function as claimed in claim 1, characterized in that said bottom outlet of the lower hopper (22) is hinged with a baffle (221), one end of the baffle (221) is connected with the lower 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).
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| CN112275360B (en) | 2021-11-09 |
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