CN113333281B

CN113333281B - Concrete preparation grit material classifying and screening device

Info

Publication number: CN113333281B
Application number: CN202110898862.0A
Authority: CN
Inventors: 欧阳长领
Original assignee: Jiangsu Tonghe Asphalt Concrete Co ltd
Current assignee: Jiangsu Tonghe Asphalt Concrete Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-10-08
Anticipated expiration: 2041-08-06
Also published as: CN113333281A

Abstract

The invention relates to the technical field of concrete preparation, in particular to a concrete preparation sand and stone grading and screening device which comprises a screening cylinder, a multi-stage screening mechanism and an auxiliary blanking mechanism, wherein the screening cylinder is internally provided with the multi-stage screening mechanism, and the upper end of the screening cylinder is provided with the auxiliary blanking mechanism; the invention carries out one-time screening operation on the sand in advance by prolonging the sand feeding route, thereby reducing the possibility that the sand blocks the screen, and solving the problem that the sand with small particles can not pass through the screening net because the screen is blocked by the sand; the invention grades the sandstone and rapidly feeds the sandstone by simultaneously opening the plurality of feed openings, thereby solving the problem of low efficiency of screening the sandstone caused by sequentially collecting the sandstone on each layer of screen in the prior art.

Description

Concrete preparation grit material classifying and screening device

Technical Field

The invention relates to the technical field of concrete preparation, in particular to a concrete preparation sand stone material grading and screening device.

Background

The concrete is artificial stone which is prepared by mixing cement, water, sand, stones, chemical additives and mineral admixtures according to a proper proportion, uniformly stirring, densely forming, curing and hardening; concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete.

The concrete is generally prepared by mixing and stirring sand stones and cement with water, wherein the sand stones have larger influence on the strength of the concrete due to the particle size of the sand stones, and the concrete prepared from the finer sand stones has higher strength, so that the sand stones need to be screened before the concrete is prepared, and the concrete with different strengths is prepared in a grading way.

The following problems often exist when screening sand: firstly, multi-stage screening operation is often required to be carried out on the gravels in the screening process, so that a large amount of gravels are easily accumulated on the screen in the screening process, and the screen is blocked by the gravels, so that the gravels with small particles can not pass through the screening net; secondly, because the grit needs to carry out the multistage screening operation for the grit after the screening needs the separation to be collected, often collects the grit on every layer of screen cloth in proper order among the prior art, and the screening efficiency of grit has been reduced to this kind of mode.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme to realize: a concrete preparation grit material grading and screening device comprises a screening cylinder, a multi-stage screening mechanism and an auxiliary blanking mechanism, wherein the multi-stage screening mechanism is arranged in the screening cylinder, and the auxiliary blanking mechanism is arranged at the upper end of the screening cylinder; the multi-stage screening mechanism comprises a hollow strut, a screening net, an auxiliary ring plate, a keel rotary-vane screen mesh and a vibrating mechanism, wherein the hollow strut is arranged in a screening cylinder; the leading-in screening section of thick bamboo of grit, the grit feeds when being sieved on the page or leaf screen cloth is revolved to the fossil fragments, the page or leaf screen cloth is revolved to the fossil fragments makes the feed path time extension of grit, thereby prevent that the grit from being led to the problem that leads to the grit to cause its jam on the screening net simultaneously on the screening net by the direction on the screening net, the grit that accords with the standard simultaneously can be followed the fossil fragments and revolved the page or leaf screen cloth top of screening when feeding along the fossil fragments and revolve the page or leaf screen cloth orbit, thereby will accord with the grit of fine grain size and pass through the screening operation that the screening net got into next grade in advance, thereby prevented that the screen cloth from being blockked up so that the problem that the grit that the granule is little also can't pass through the screening net, vibrations mechanism drive the fossil fragments and revolve the efficiency that the page or leaf screen cloth shakes and promote the screening and the unloading process of grit.

The vibration mechanism comprises a driving motor, a rotating rod, a vibration cam, a feeding plate, a driven plate and a collision unit, wherein the driving motor is arranged on the inner wall of the upper end of the hollow pillar, the rotating rod is arranged at the lower end of the output end of the driving motor, the vibration cam is uniformly arranged on the outer wall of the rotating rod from top to bottom, vibration cavities are uniformly formed in the auxiliary ring plate around the axial direction of the auxiliary ring plate, the feeding plate is connected with the inner walls of the upper end and the lower end of the vibration cavities in a sliding mode, the driven plate is arranged at one end, close to the vibration cam, of the feeding plate, the driven plate is inserted into the inner side wall of the auxiliary ring plate in a sliding mode, and the collision unit is arranged at one end, far away from the vibration cam, of the feeding plate; the driving motor drives the vibration cam to rotate, so that the driven plate and the vibration cam are matched to drive the feeding plate to feed in a reciprocating mode, and then the collision unit and the inner wall of the vibration cavity impact the keel rotary screen to vibrate.

Preferably, the collision unit comprises a sliding clamping seat, an impact clamping block and a return spring, the sliding clamping seat is uniformly arranged at one end of the feeding plate, which is far away from the vibration cam, from top to bottom, the impact clamping block is connected with the sliding clamping seat in a sliding mode, and the return spring is arranged between the impact clamping block and the inner end inner wall of the sliding clamping seat; when the impact fixture block impacts the inner wall of the vibration cavity, the impact fixture block extrudes the return spring, so that the condition that the vibration cam cannot rotate is avoided.

Preferably, the multi-stage screening mechanism further comprises a rotating plate, a rotating seat and a cleaning rod, the rotating plate is uniformly arranged on the outer wall of the rotating rod from top to bottom, the rotating seat is arranged on the outer wall of the rotating plate, and the cleaning rod is connected with the rotating seat in a rotating mode; the cleaning rod is tightly attached to the upper end face of the screening net under the action of the torsion spring, and when the driving motor drives the rotating rod to rotate, the cleaning rod is driven to flatten the gravel on the upper end face of the screening net, so that the gravel can be conveniently discharged.

Preferably, the cleaning rod is connected with the rotating seat through a torsion spring.

Preferably, the mesh number of the screening net is gradually increased from top to bottom, the screening net is of an inclined structure, and the inclination directions of two adjacent screening nets are different.

Preferably, the keel rotary screen meshes are gradually increased from top to bottom, and the adjacent keel rotary screen meshes are arranged in a mirror image manner; the higher side of the grit direction screening net inclined plane that fossil fragments revolve page or leaf screen cloth and can't sieve for the grit direction fossil fragments that pile up on the screening net revolves the higher side of page or leaf screen cloth.

Preferably, the auxiliary blanking mechanism comprises an auxiliary ring, a rotating gear, tooth plates, a sliding frame, an auxiliary frame, a sealing block and a rotating handle, wherein the auxiliary ring is arranged at the upper end of the sieving cylinder; twist through the manual work and move rotatory handle, drive carriage and auxiliary frame outwards open under the cooperation of rotary gear and tooth dental lamina to drive sealed piece and open the feed opening, thereby make the grit of different granule sizes simultaneously the unloading from a plurality of feed openings.

Preferably, the outer side end of the auxiliary frame is provided with a matching groove, and the upper end face of the matching groove is positioned on the lower side of the sealing block.

The invention has the beneficial effects that: 1. the invention carries out one-time screening operation on the sand in advance by prolonging the sand feeding route, thereby reducing the possibility that the sand blocks the screen, and solving the problem that the sand with small particles can not pass through the screening net because the screen is blocked by the sand; the invention grades the sandstone and rapidly feeds the sandstone by simultaneously opening the plurality of feed openings, thereby solving the problem of low efficiency of screening the sandstone caused by sequentially collecting the sandstone on each layer of screen in the prior art.

2. The invention prolongs the feeding path time of the sand through the arranged keel rotary-vane screen, thereby preventing the sand from being simultaneously guided to the screening net to cause the sand to be blocked on the screening net, and simultaneously, the sand meeting the standard can be screened from the keel rotary-vane screen to fall above the screening net when being fed along the track of the keel rotary-vane screen, thereby leading the sand meeting the size of fine grains to enter the next stage of screening operation in advance through the screening net, and preventing the problem that the sand with small grains can not pass through the screening net because the screen is blocked by the sand.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the multistage sieving mechanism of the present invention.

Fig. 3 is a schematic structural view in front cross section in the present invention.

Fig. 4 is a partial enlarged view of the portion I of fig. 3 according to the present invention.

FIG. 5 is an enlarged view of a portion II of FIG. 3 according to the present invention.

Fig. 6 is a schematic view of a part of the structure of the auxiliary blanking mechanism of the present invention.

In the figure: 1. a screening drum; 2. a multi-stage screening mechanism; 21. a hollow pillar; 22. screening the net; 23. an auxiliary ring plate; 24. a keel rotary screen mesh 25 and a vibration mechanism; 251. a drive motor; 252. rotating the rod; 253. vibrating the cam; 254. a feed plate; 255. a driven plate; 2561. a sliding card holder; 2562. impacting the fixture block; 2563. a return spring; 26. a rotating plate; 27. a rotating seat; 28. a cleaning rod; 3. an auxiliary blanking mechanism; 31. an auxiliary ring; 32. a rotating gear; 33. a tooth plate; 34. a carriage; 35. an auxiliary frame; 36. a sealing block; 37. rotating the handle; a. a vibration chamber; b. and (4) matching the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 1 and 3, the concrete preparation sand and stone material grading and screening device comprises a screening cylinder 1, a multi-stage screening mechanism 2 and an auxiliary blanking mechanism 3, wherein the multi-stage screening mechanism 2 is arranged in the screening cylinder 1, and the auxiliary blanking mechanism 3 is arranged at the upper end of the screening cylinder 1; the multistage screening mechanism 2 comprises a hollow pillar 21, a screening net 22, an auxiliary ring plate 23, a keel rotary-vane screen 24 and a vibration mechanism 25, wherein the hollow pillar 21 is arranged in the screening cylinder 1, the screening net 22 is uniformly arranged between the hollow pillar 21 and the inner ring surface of the screening cylinder 1 from top to bottom, the auxiliary ring plate 23 is uniformly arranged on the outer wall of the hollow pillar 21 from top to bottom, the auxiliary ring plate 23 is specifically arranged on the outer wall of the hollow pillar 21 in an embedding manner, the keel rotary-vane screen 24 is arranged on the outer wall of the auxiliary ring plate 23, and the vibration mechanism 25 is arranged in the auxiliary ring plate 23; the mesh number of the screening nets 22 is gradually increased from top to bottom, the screening nets 22 are of an inclined structure, and the inclination directions of two adjacent screening nets 22 are different; the keel rotary screen 24 has gradually increased mesh from top to bottom, and the adjacent keel rotary screen 24 is arranged in a mirror image manner; the sand which can not be screened by the keel rotary-vane screen 24 is guided to the higher side of the inclined plane of the screening net 22, so that the sand accumulated on the screening net 22 is guided to the higher side of the keel rotary-vane screen 24; the sand is guided into the screening cylinder 1 from the outside through manpower, the sand slides along the track of the keel rotary-page screen 24 while being screened on the keel rotary-page screen 24, the keel rotary-page screen 24 prolongs the feeding path time of the sand, thereby preventing the sand from being simultaneously guided onto the screening net 22 to cause the blockage of the sand on the screening net 22, the sand meeting the standard can be screened over the screening net 22 from the keel rotary-page screen 24 when being fed along the track of the keel rotary-page screen 24, thereby the sand meeting the size of fine grains enters the screening operation of the next level in advance through the screening net, the problem that the screening net 22 is blocked by the sand so that the small-grain sand cannot pass through the screening net 22 is prevented, and the vibration mechanism 25 drives the keel rotary-page screen 24 to vibrate to improve the screening and blanking efficiency of the sand.

Referring to fig. 4, the vibration mechanism 25 includes a driving motor 251, a rotating rod 252, a vibration cam 253, a feeding plate 254, a driven plate 255 and a collision unit, the driving motor 251 is disposed on the inner wall of the upper end of the hollow pillar 21, the rotating rod 252 is disposed at the lower end of the output end of the driving motor 251, the vibration cam 253 is uniformly disposed on the outer wall of the rotating rod 252 from top to bottom, a vibration cavity a is uniformly disposed in the auxiliary ring plate 23 around the axial direction of the auxiliary ring plate, the feeding plate 254 is connected with the inner walls of the upper and lower ends of the vibration cavity a in a sliding manner, the driven plate 255 is disposed at one end of the feeding plate 254 close to the vibration cam 253, the driven plate 255 is slidably inserted on the inner side wall of the auxiliary ring plate 23, and the collision unit is disposed at one end of the feeding plate 254 far from the vibration cam 253; the collision unit comprises a sliding clamping seat 2561, an impact clamping block 2562 and a return spring 2563, the sliding clamping seat 2561 is uniformly arranged at one end of the feeding plate 254 away from the vibration cam 253 from top to bottom, the impact clamping block 2562 is connected with the sliding clamping seat 2561 in a sliding mode, and the return spring 2563 is arranged between the impact clamping block 2562 and the inner end inner wall of the sliding clamping seat 2561; the driving motor 251 drives the vibration cam 253 to rotate, so that the driven plate 255 and the vibration cam 253 are matched to drive the feeding plate 254 to feed in a reciprocating manner, and then the keel rotary screen 24 is driven to vibrate through the impact of the collision unit and the inner wall of the vibration cavity a; when the striking block 2562 strikes against the inner wall of the vibration chamber, the striking block 2562 presses the return spring 2563, thereby preventing the vibration cam 253 from being unable to rotate.

Referring to fig. 3, the multi-stage screening mechanism 2 further includes a rotating plate 26, a rotating seat 27 and a cleaning rod 28, the rotating plate 26 is uniformly arranged on the outer wall of the rotating rod 252 from top to bottom, the rotating seat 27 is arranged on the outer wall of the rotating plate 26, and the cleaning rod 28 is connected with the rotating seat 27 in a rotating manner; the cleaning rod 28 is connected with the rotating seat 27 through a torsion spring; the sweeping rod 28 is tightly attached to the upper end surface of the screening net 22 under the action of the torsion spring, and when the driving motor 251 drives the rotating rod 252 to rotate, the sweeping rod 28 is driven to flatten the sand on the upper end surface of the screening net 22, so that the sand can be conveniently discharged.

Referring to fig. 6, the auxiliary blanking mechanism 3 includes an auxiliary ring 31, a rotary gear 32, a tooth plate 33, a sliding frame 34, an auxiliary frame 35, a sealing block 36 and a rotary handle 37, the auxiliary ring 31 is disposed at the upper end of the sieving cylinder 1, the rotary gear 32 is rotatably disposed at the upper end of the sieving cylinder 1, the two tooth plates 33 are slidably disposed at the upper end of the sieving cylinder 1, the two tooth plates 33 are symmetrically arranged along the center of the rotary gear 32, the tooth plates 33 are connected with the rotary gear 32 in a meshing manner, the sliding frame 34 is disposed at one end of the tooth plates 33 away from the rotary gear 32, the auxiliary frame 35 is disposed at one end of the sliding frame 34 away from the rotary gear 32, the sealing block 36 is disposed at one end of the auxiliary frame 35 close to the sieving cylinder 1, and the rotary handle 37 is disposed at the upper end of the rotary gear 32; the outer side end of the auxiliary frame 35 is provided with a matching groove b, and the upper end surface of the matching groove b is positioned at the lower side of the sealing block 36; the feed opening has been seted up on the screening section of thick bamboo outer wall, and cooperation groove b makes outside auxiliary unloading equipment can hug closely screening section of thick bamboo 1 and makes things convenient for the grit unloading, twists through the manual work and moves rotatory handle 37, drives carriage 34 and auxiliary frame 35 and outwards opens under the cooperation of rotary gear 32 and tooth dental lamina 33 to drive sealed piece 36 and open the feed opening, thereby make the grit of different granule sizes from a plurality of feed openings unloading simultaneously.

The foregoing shows and describes the general principles, principal features and advantages of the invention; it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims; the scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a concrete preparation grit material classifying screen divides device, includes screening section of thick bamboo (1), multistage screening mechanism (2) and supplementary unloading mechanism (3), its characterized in that: a multi-stage screening mechanism (2) is arranged in the screening cylinder (1), and an auxiliary blanking mechanism (3) is arranged at the upper end of the screening cylinder (1); the multistage screening mechanism (2) comprises hollow pillars (21), screening nets (22), auxiliary ring plates (23), keel rotary-vane screen meshes (24) and a vibration mechanism (25), wherein the hollow pillars (21) are arranged in the screening barrel (1), the screening nets (22) are uniformly arranged between the hollow pillars (21) and the inner ring surface of the screening barrel (1) from top to bottom, the auxiliary ring plates (23) are uniformly arranged on the outer walls of the hollow pillars (21) from top to bottom, the keel rotary-vane screen meshes (24) are arranged on the outer walls of the auxiliary ring plates (23), and the vibration mechanism (25) is arranged in the auxiliary ring plates (23);

the vibration mechanism (25) comprises a driving motor (251), a rotating rod (252), a vibration cam (253), a feeding plate (254), a driven plate (255) and a collision unit, wherein the driving motor (251) is arranged on the inner wall of the upper end of the hollow strut (21), the rotating rod (252) is arranged at the lower end of the output end of the driving motor (251), the vibration cam (253) is uniformly arranged on the outer wall of the rotating rod (252) from top to bottom, a vibration cavity (a) is uniformly formed in the auxiliary ring plate (23) around the axial direction of the auxiliary ring plate, the feeding plate (254) is connected with the inner walls of the upper end and the lower end of the vibration cavity (a) in a sliding mode, the driven plate (255) is arranged at one end, close to the vibration cam (253), the driven plate (255) is slidably inserted in the inner wall of the auxiliary ring plate (23), and the collision unit is arranged at one end, far away from the vibration cam (253), of the feeding plate (254);

the collision unit comprises a sliding clamping seat (2561), a collision clamping block (2562) and a return spring (2563), the sliding clamping seat (2561) is uniformly arranged at one end, away from the vibration cam (253), of the feeding plate (254) from top to bottom, the collision clamping block (2562) is connected with the sliding clamping seat (2561) in a sliding mode, and the return spring (2563) is arranged between the collision clamping block (2562) and the inner end inner wall of the sliding clamping seat (2561);

the multi-stage screening mechanism (2) further comprises a rotating plate (26), a rotating seat (27) and a cleaning rod (28), the rotating plate (26) is uniformly arranged on the outer wall of the rotating rod (252) from top to bottom, the rotating seat (27) is arranged on the outer wall of the rotating plate (26), and the cleaning rod (28) is connected with the rotating seat (27) in a rotating mode;

the auxiliary blanking mechanism (3) comprises an auxiliary ring (31), a rotating gear (32), a tooth plate (33), a sliding frame (34), an auxiliary frame (35), a sealing block (36) and a rotating handle (37), an auxiliary ring (31) is arranged at the upper end of the screening cylinder (1), a rotary gear (32) is rotatably arranged at the upper end of the screening cylinder (1), two tooth plates (33) are slidably arranged at the upper end of the screening cylinder (1), the two tooth plates (33) are arranged along the center of the rotary gear (32) in a symmetrical mode, the tooth plates (33) are connected with the rotary gear (32) in a meshing mode, a sliding frame (34) is arranged at one end, away from the rotary gear (32), of each tooth plate (33), an auxiliary frame (35) is arranged at one end, away from the sliding frame (34), a sealing block (36) is arranged at one end, close to the screening cylinder (1), of each auxiliary frame (35), and a rotary handle (37) is arranged at the upper end of the rotary gear (32);

the driving motor (251) drives the vibration cam (253) to rotate, so that the driven plate (255) is matched with the vibration cam (253) to drive the feeding plate (254) to feed in a reciprocating manner, and then the collision unit impacts the inner wall of the vibration cavity (a) to drive the keel rotary screen (24) to vibrate; when the impact fixture block (2562) impacts the inner wall of the vibration cavity, the impact fixture block (2562) extrudes the return spring (2563), so that the situation that the vibration cam (253) cannot rotate is avoided; cleaning rod (28) with rotate between the seat (27) and be connected through torsion spring, cleaning rod (28) hug closely screening net (22) up end under torsion spring's effect, when driving motor (251) drive dwang (252) were rotatory, drive cleaning rod (28) simultaneously and spread out the grit of screening net (22) up end to make things convenient for the grit unloading.

2. The concrete preparation grit material classifying and screening device as claimed in claim 1, wherein: the screening nets (22) are gradually increased in mesh from top to bottom, the screening nets (22) are of an inclined structure, and the inclination directions of the two adjacent screening nets (22) are different.

3. The concrete preparation grit material classifying and screening device as claimed in claim 1, wherein: the keel rotary screen (24) is gradually increased from top to bottom, and the adjacent keel rotary screen (24) is arranged in a mirror image manner.

4. The concrete preparation grit material classifying and screening device as claimed in claim 1, wherein: the outer side end of the auxiliary frame (35) is provided with a matching groove (b), and the upper end face of the matching groove (b) is positioned on the lower side of the sealing block (36).