CN212370567U - Coarse and fine aggregate screening device for concrete batching - Google Patents

Coarse and fine aggregate screening device for concrete batching Download PDF

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Publication number
CN212370567U
CN212370567U CN202020870807.1U CN202020870807U CN212370567U CN 212370567 U CN212370567 U CN 212370567U CN 202020870807 U CN202020870807 U CN 202020870807U CN 212370567 U CN212370567 U CN 212370567U
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China
Prior art keywords
cylinder
screening
coarse
fine aggregate
sieve
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CN202020870807.1U
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Chinese (zh)
Inventor
邱文会
邱润泽
史鹏宇
李肖翰
张新冉
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Henan Jinnuo Concrete Co ltd
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Henan Jinnuo Concrete Co ltd
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Abstract

Thick and thin aggregate screening plant for concrete batching, set up the landing leg including four perpendicularly, four landing leg upper end levels are equipped with rectangular frame, the inside open sieve section of thick bamboo in top that is provided with of rectangular frame, link and back link before sieve section of thick bamboo front end and rear end are fixed respectively are equipped with, the fixed preceding fixed axle that is equipped with in front side of preceding link, the fixed back fixed axle that is equipped with in rear side of back link, preceding fixed axle rotates the front side of connecting at rectangular frame, back fixed axle rotates and connects between two landing legs at the rear side, rectangular frame is equipped with the portal frame along the middle part of fore-and-aft direction, be connected through a cylinder between the left side top of portal frame and sieve section of thick bamboo. The utility model discloses the principle science, simple structure, reasonable in design, noise when screening operation, cylinder drive sieve section of thick bamboo are reciprocal oscillating screening operation, and screening is effectual.

Description

Coarse and fine aggregate screening device for concrete batching
Technical Field
The utility model belongs to the technical field of the concrete production, concretely relates to thickness aggregate screening plant is used to concrete batching.
Background
The coarse aggregate required in the concrete ingredient is crushed stone with the particle size of 5-10mm, the fine aggregate has the particle size of below 5mm, the fine aggregate is generally formed by crushing the crushed stone, and more coarse aggregate is still contained in the crushed fine aggregate, so the coarse aggregate and the fine aggregate are required to be respectively screened in order to improve the accuracy of the proportioning of the raw materials in the flat concrete ingredient. The existing screening equipment comprises a drum screen, a vibrating screen and the like, most of the existing screening equipment is complex in structure, the driving force of the existing screening equipment is that a motor is adopted to drive a speed reducer to operate, the site noise is large, and the noise generated by the vibrating motor is large due to the vibrating screen. The operation is also carried out manually, and the mode has high labor intensity and low efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a thickness aggregate screening plant for concrete batching that simple structure, noise are little during the operation.
In order to solve the technical problem, the utility model adopts the following technical scheme: the thick and thin aggregate screening device for concrete batching comprises four vertically arranged supporting legs, rectangular frames are horizontally arranged at the upper ends of the four supporting legs, the length direction of each rectangular frame is arranged along the front-back direction, a screen drum with an open top is arranged inside each rectangular frame, the outline of the cross section of each screen drum is a major arc line segment, a front connecting frame and a rear connecting frame are fixedly arranged at the front end and the rear end of each screen drum respectively, a front fixing shaft is fixedly arranged at the front side of each front connecting frame, a rear fixing shaft is fixedly arranged at the rear side of each rear connecting frame, the front fixing shaft, the rear fixing shaft and the central line of each screen drum are superposed, the central line is obliquely arranged in a front-high manner and in a rear-low manner, the front fixing shaft is rotatably connected to the front side of each rectangular frame, the rear fixing shaft is rotatably connected between the two supporting legs at the rear side, two portal frames are arranged at the front, the left connecting plate on the leftmost side is connected with the top of the left side of the screen cylinder through an air cylinder, the upper end of a cylinder body of the air cylinder is hinged to the left connecting plate on the leftmost side, the lower end of a piston rod of the air cylinder is hinged to the top of the left side of the screen cylinder, and the air cylinder is perpendicular to the center line of the screen cylinder.
The structure of preceding link is the same with the back link, all include a horizontal pole and three radials, the horizontal pole sets up along left right direction, the horizontal pole both ends respectively with sieve section of thick bamboo top front side and rear side fixed connection, a radials upper end and horizontal pole middle part fixed connection on upper portion, the outer end of two radials in addition all with the lower part left and right sides fixed connection of a sieve section of thick bamboo, the inner of three radials is fixed with the connection, front fixed axle rear end fixed connection is in the junction in the three radials of front side, the junction in the three radials of back fixed axle front end fixed connection rear side, the fixed jam plate that is used for shutoff sieve section of thick bamboo front end port that is equipped with in the front side of preceding link.
A fine aggregate guide flat plate positioned below the screen cylinder is arranged between the four support legs, and the fine aggregate guide flat plate is obliquely arranged in a left-high-right direction.
A coarse aggregate guide semi-cylinder is fixedly arranged between the two supporting legs at the rear side, the coarse aggregate guide semi-cylinder is arranged in a high-back low-tilt mode, the front side edge of the coarse aggregate guide semi-cylinder is located below the bottom of the rear end of the screen cylinder, and a baffle for separating coarse aggregate and fine aggregate after screening is vertically arranged at the front side of the two supporting legs at the rear side.
The outer portion of a piston rod of the air cylinder is sleeved with a dustproof corrugated expansion pipe, the upper end of the dustproof corrugated expansion pipe is fixedly and hermetically connected with the lower portion of a cylinder body of the air cylinder, and the lower end of the dustproof corrugated expansion pipe is fixedly and hermetically connected with the outer circle of the lower end of the piston rod.
Adopt above-mentioned technical scheme the utility model discloses a slope front side sets up belt conveyor, and belt conveyor's discharge end is located a sieve section of thick bamboo front end directly over. The feeding amount of the screen drum is adjusted by adjusting the conveying speed of the belt conveying device.
The utility model discloses during the operation of screening, belt conveyors carries a sieve section of thick bamboo with the defeated mixture of coarse aggregate and fine aggregate in, compressed gas provides power for the cylinder, fixed axle and back fixed axle are the swing of rotation about the center before the flexible drive sieve section of thick bamboo of piston rod of cylinder, thereby material in the drive sieve section of thick bamboo is horizontal hunting in a sieve section of thick bamboo, fine aggregate falls on the fine aggregate guide flat board through the sieve mesh of seting up on the sieve section of thick bamboo, and landing leg right side outside downwards, because sieve section of thick bamboo central line is the low slope setting of high back before, the central line of a sieve section of thick bamboo is 10-20 with the contained angle of horizontal plane, and can adjust the inclination of a sieve section of thick bamboo through setting up the backing plate bottom two landing legs at the front side, just so can adjust the material from forward backward moving speed in a sieve section of thick bamboo. Coarse aggregate which does not pass through the sieve mesh falls to the coarse aggregate guide semi-cylinder from the right end of the sieve cylinder and slides to the rear sides of the two rear supporting legs along the coarse aggregate guide semi-cylinder, and a baffle plate for separating the screened coarse aggregate from the fine aggregate is vertically arranged on the front sides of the two rear supporting legs.
The cylinder is adopted as a power driving device, the cylinder stretches up and down and drives the screen drum to rotate in a reciprocating mode left and right, the noise is low, the structure is simple, the cost is low, the cylinder is perpendicular to the central line of the screen drum, the driving force of the cylinder is enabled to be along the central line direction of the cylinder as much as possible, and the stress in other directions is prevented from acting on the cylinder.
The closure plate on the front side of the front connecting frame plays a role in blocking materials, and the screened coarse aggregate falls down through the rear connecting frame at the rear end of the screen cylinder.
The fine aggregate guide flat plate is used for guiding the screened fine aggregate out of the supporting leg, and the coarse aggregate guide semi-cylinder is used for guiding the screened coarse aggregate out of the supporting leg, so that the fine aggregate guide flat plate is convenient to transport outwards.
Because there is the dust to produce at the screening in-process, the piston rod of cylinder is flexible in the cylinder body, in order to avoid the dust adhesion to influence the flexible and leakproofness of cylinder on the piston rod, consequently set up the flexible pipe of dustproof ripple, the lower part at the cylinder body is fixed to the upper end of the flexible pipe of dustproof ripple, and the lower extreme of the flexible pipe of dustproof ripple is flexible from top to bottom along with the piston rod to ensure that the piston rod keeps good cleanliness.
The compressed air and associated valves for supplying air to the cylinders are conventional in the art and the detailed construction is not described in detail.
To sum up, the utility model discloses the principle science, simple structure, reasonable in design, noise when screening operation, reciprocal oscillating screening operation is done to cylinder drive sieve section of thick bamboo, and screening is effectual.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic cross-sectional view of a semi-cylinder for guiding coarse aggregate in fig. 1.
Detailed Description
As shown in fig. 1-3, the coarse and fine aggregate screening device for concrete batching of the present invention comprises four vertically disposed legs 1, a rectangular frame 2 horizontally disposed at the upper end of the four legs 1, a length direction of the rectangular frame 2 disposed along a front-back direction, a screen drum 3 with an open top disposed inside the rectangular frame 2, a cross section of the screen drum 3 having a contour of a major arc segment, a front connection frame and a rear connection frame fixedly disposed at the front end and the rear end of the screen drum 3, respectively, a front fixing shaft 4 fixedly disposed at the front side of the front connection frame, a rear fixing shaft 5 fixedly disposed at the rear side of the rear connection frame, a central line of the front fixing shaft 4, the rear fixing shaft 5 and the screen drum 3 being coincident, the central line being inclined from front to back, the front fixing shaft 4 being rotatably connected to the front side of the rectangular frame 2, the rear fixing shaft 5 being rotatably connected between two legs 1 at the rear side, portal frames 6 (two spaced from front to back, at least three connecting plates 15 are arranged between the tops of the cross beams of the two portal frames), the leftmost connecting plate 15 is connected with the top of the left side of the screen drum 3 through a cylinder 7, the upper end of the cylinder body of the cylinder 7 is hinged with the leftmost connecting plate 15, the lower end of the piston rod of the cylinder 7 is hinged with the top of the left side of the screen drum 3, and the cylinder 7 is perpendicular to the central line of the screen drum 3.
The structure of preceding link is the same with the structure of back link, all include a horizontal pole 8 and three radials 9, horizontal pole 8 sets up along left and right directions, 8 both ends of horizontal pole respectively with sieve section of thick bamboo 3 top front side and rear side fixed connection, a radials 9 upper end and 8 middle parts fixed connection on horizontal pole on upper portion, the outer end of two radials 9 all with the lower part left and right sides fixed connection of sieve section of thick bamboo 3 in addition, the inner of three radials 9 is fixed with the connection, front fixed axle 4 rear end fixed connection is at the inner junction of three radials 9 of front side, the inner junction of three radials 9 of rear fixed axle 5 front end fixed connection rear side, the front side of preceding link is fixed to be equipped with the closure plate (not shown) that is used for shutoff sieve section of thick bamboo 3 front end.
A fine aggregate guiding flat plate 10 positioned below the screen drum 3 is arranged between the four supporting legs 1, and the fine aggregate guiding flat plate 10 is obliquely arranged in a left-high-right direction.
A coarse aggregate guide semi-cylinder 11 is fixedly arranged between the two supporting legs 1 at the rear side, the coarse aggregate guide semi-cylinder 11 is obliquely arranged in front of and behind the coarse aggregate guide semi-cylinder 11, the front side edge of the coarse aggregate guide semi-cylinder 11 is positioned below the bottom of the rear end of the screen cylinder 3, and a baffle plate 12 for separating coarse aggregate and fine aggregate after screening is vertically arranged at the front side of the two supporting legs 1 at the rear side.
The outer portion of a piston rod of the air cylinder 7 is sleeved with a dustproof corrugated expansion pipe 13, the upper end of the dustproof corrugated expansion pipe 13 is fixedly and hermetically connected with the lower portion of a cylinder body of the air cylinder 7, and the lower end of the dustproof corrugated expansion pipe 13 is fixedly and hermetically connected with the outer circle of the lower end of the piston rod.
The utility model discloses a slope front side sets up belt conveyor 14, and belt conveyor 14's discharge end is located the sieve section of thick bamboo 3 front ends directly over. The feeding amount of the screen cylinder 3 is adjusted by adjusting the conveying speed of the belt conveyor 14.
When the utility model is used for screening, the belt conveying device 14 conveys the mixture of coarse aggregate and fine aggregate into the screen cylinder 3, the compressed gas provides power for the air cylinder 7, the piston rod of the air cylinder 7 drives the screen cylinder 3 to rotate and swing left and right by taking the front fixed shaft 4 and the rear fixed shaft 5 as the center, thereby driving the materials in the screen cylinder 3 to swing left and right in the screen cylinder 3, the fine aggregate falls on the fine aggregate guide flat plate 10 through the screen holes arranged on the screen cylinder 3 and slides downwards to the outside of the right side of the supporting leg 1, because the central line of the screen drum 3 is obliquely arranged with a high front part and a low back part, the included angle between the central line of the screen drum 3 and the horizontal plane is 10-20 degrees, the inclination angle of the screen drum 3 can be adjusted by arranging a cushion plate at the bottom of the two support legs 1 at the front side, so that the moving speed of materials in the screen drum 3 from front to back can be adjusted to match the feeding speed of the belt conveyor 14. Coarse aggregate that does not pass through the sieve mesh falls to coarse aggregate guide semicircle tube 11 by sieve section of thick bamboo 3 right-hand member to along the rear side of two landing legs 1 of coarse aggregate guide semicircle tube 11 landing rear side, the vertical baffle 12 that is equipped with the coarse aggregate after will sieving and fine aggregate in the front side of two landing legs 1 of rear side.
The cylinder 7 is adopted as a power driving device, the cylinder extends up and down to drive the screen drum 3 to rotate in a reciprocating mode left and right, the noise is low, the structure is simple, the cost is low, the cylinder 7 is perpendicular to the central line of the screen drum 3, the driving force of the cylinder 7 is enabled to be along the central line direction of the cylinder 7 as much as possible, and the effect of stress in other directions on the cylinder 7 is avoided.
The closure plate in the front of the front connecting frame plays a role in blocking materials, and the screened coarse aggregate falls down through the rear connecting frame at the rear end of the screen cylinder 3.
The fine aggregate guiding flat plate 10 is used for guiding the screened fine aggregate out of the supporting leg 1, and the coarse aggregate guiding semi-cylinder 11 is used for guiding the screened coarse aggregate out of the supporting leg 1, so that the fine aggregate guiding flat plate is convenient to transport outwards.
Because there is the dust production at the screening in-process, the piston rod of cylinder 7 is flexible in the cylinder body, in order to avoid the dust adhesion to influence the flexible and leakproofness of cylinder 7 on the piston rod, consequently set up flexible pipe 13 of dustproof ripple, the lower part at the cylinder body is fixed to the upper end of flexible pipe 13 of dustproof ripple, and the lower extreme of flexible pipe 13 of dustproof ripple is flexible from top to bottom along with the piston rod to ensure that the piston rod keeps good cleanliness.
The screen cylinder 3, the belt conveyor 14 and the compressed air and associated air valves for supplying the air cylinder 7 are conventional in the art and the detailed construction is not described in detail.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

Claims (5)

1. Thick and thin aggregate screening plant for concrete batching, its characterized in that: the screening machine comprises four vertically arranged supporting legs, a rectangular frame is horizontally arranged at the upper ends of the four supporting legs, the length direction of the rectangular frame is arranged along the front-back direction, a screening drum with an open top is arranged in the rectangular frame, the outline of the cross section of the screening drum is a major arc line segment, a front connecting frame and a rear connecting frame are respectively fixedly arranged at the front end and the rear end of the screening drum, a front fixing shaft is fixedly arranged at the front side of the front connecting frame, a rear fixing shaft is fixedly arranged at the rear side of the rear connecting frame, the front fixing shaft, the rear fixing shaft and the central line of the screening drum are coincided, the central line is obliquely arranged in a front-high manner and in a rear-low manner, the front fixing shaft is rotatably connected to the front side of the rectangular frame, the rear fixing shaft is rotatably connected between the two supporting legs at the rear side, two portal frames are arranged along the front-back direction, at least three connecting plates are arranged between, the upper end of the cylinder body of the cylinder is hinged with the connecting plate at the leftmost side, the lower end of the piston rod of the cylinder is hinged with the top of the left side of the screen cylinder, and the cylinder is perpendicular to the central line of the screen cylinder.
2. A coarse and fine aggregate screening apparatus for concrete batching as claimed in claim 1 wherein: the structure of preceding link is the same with the back link, all include a horizontal pole and three radials, the horizontal pole sets up along left right direction, the horizontal pole both ends respectively with sieve section of thick bamboo top front side and rear side fixed connection, a radials upper end and horizontal pole middle part fixed connection on upper portion, the outer end of two radials in addition all with the lower part left and right sides fixed connection of a sieve section of thick bamboo, the inner of three radials is fixed with the connection, front fixed axle rear end fixed connection is in the junction in the three radials of front side, the junction in the three radials of back fixed axle front end fixed connection rear side, the fixed jam plate that is used for shutoff sieve section of thick bamboo front end port that is equipped with in the front side of preceding link.
3. A coarse and fine aggregate screening apparatus for concrete batching as claimed in claim 1 wherein: a fine aggregate guide flat plate positioned below the screen cylinder is arranged between the four support legs, and the fine aggregate guide flat plate is obliquely arranged in a left-high-right direction.
4. A coarse and fine aggregate screening apparatus for concrete batching as claimed in claim 1 wherein: a coarse aggregate guide semi-cylinder is fixedly arranged between the two supporting legs at the rear side, the coarse aggregate guide semi-cylinder is arranged in a high-back low-tilt mode, the front side edge of the coarse aggregate guide semi-cylinder is located below the bottom of the rear end of the screen cylinder, and a baffle for separating coarse aggregate and fine aggregate after screening is vertically arranged at the front side of the two supporting legs at the rear side.
5. A coarse and fine aggregate screening apparatus for concrete batching according to any one of claims 1 to 4, characterized in that: the outer portion of a piston rod of the air cylinder is sleeved with a dustproof corrugated expansion pipe, the upper end of the dustproof corrugated expansion pipe is fixedly and hermetically connected with the lower portion of a cylinder body of the air cylinder, and the lower end of the dustproof corrugated expansion pipe is fixedly and hermetically connected with the outer circle of the lower end of the piston rod.
CN202020870807.1U 2020-05-22 2020-05-22 Coarse and fine aggregate screening device for concrete batching Active CN212370567U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020870807.1U CN212370567U (en) 2020-05-22 2020-05-22 Coarse and fine aggregate screening device for concrete batching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020870807.1U CN212370567U (en) 2020-05-22 2020-05-22 Coarse and fine aggregate screening device for concrete batching

Publications (1)

Publication Number Publication Date
CN212370567U true CN212370567U (en) 2021-01-19

Family

ID=74177641

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020870807.1U Active CN212370567U (en) 2020-05-22 2020-05-22 Coarse and fine aggregate screening device for concrete batching

Country Status (1)

Country Link
CN (1) CN212370567U (en)

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