CN211412647U

CN211412647U - Centrifugal sand screening machine

Info

Publication number: CN211412647U
Application number: CN201922499751.3U
Authority: CN
Inventors: 王永根; 袁学成
Original assignee: Hangzhou Shenhua Concrete Co ltd
Current assignee: Hangzhou Shenhua Concrete Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-04
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a centrifugal sand screening machine, which comprises a frame, an inclined roller rotationally connected with the frame, and a first motor arranged on the frame and used for driving the roller to rotate, wherein two first rotating shafts parallel to the roller are rotationally connected with the frame, and the two first rotating shafts are respectively positioned at two sides of the roller; a hitting rod perpendicular to the first rotating shaft is arranged on the first rotating shaft, and a hitting ball is arranged at one end of the hitting rod away from the first rotating shaft; the rack is provided with a driving mechanism which drives the hitting balls on the two sides to be lifted simultaneously and strikes the roller under the action of gravity. This scheme can carry out the clearance of knocking type to the rotary drum automatically, and the operator's that has significantly reduced work load has effectively improved the cleaning efficiency of rotary drum.

Description

Centrifugal sand screening machine

Technical Field

The utility model belongs to the technical field of the technique of gravel and sand screening and specifically relates to a centrifugal sand screening machine is related to.

Background

Screening sand and stones in building construction is often needed, stones in the sand and stones are screened out or the sand and stones are subdivided, and the screened sand meets the construction requirements.

If the publication number is CN208494874U, the patent provides a drum-type sand screening machine, belongs to the field of building equipment, and solves the technical problems of low screening efficiency and manpower waste of the existing sand screening machine, the technical scheme is characterized by comprising a rack, a drum, a receiving hopper and a motor, wherein the two ends of the drum are respectively provided with a feeding port and a discharging port, the drum is obliquely arranged, and the feeding port of the drum is arranged on the higher side of the drum; a receiving plate for receiving fine sand is obliquely arranged in the receiving hopper, the direction of inclination of the receiving plate is opposite to that of the roller, and a first outlet is formed in the lower side of the receiving plate of the receiving hopper; connect the flitch to be provided with the opening between one side of discharge gate and the inside wall that connects the hopper, the coarse sand drops to connect the hopper bottom through the opening behind the discharge gate of cylinder.

In order to avoid the mesh blockage of the roller, after the roller stops working, an operator needs to frequently knock the roller to drop sand and stones on the mesh, the manual roller cleaning mode is time-consuming and labor-consuming, the workload of the operator is greatly increased, and the cleaning efficiency of the roller is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal sand sieving machine can carry out the clearance of percussive to the rotary drum automatically, and the operator's that has significantly reduced work load has effectively improved the cleaning efficiency of rotary drum.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a centrifugal sand screening machine comprises a rack, an inclined roller rotationally connected to the rack, and a first motor arranged on the rack and used for driving the roller to rotate, wherein two first rotating shafts parallel to the roller are rotationally connected to the rack, and the two first rotating shafts are respectively positioned on two sides of the roller; a hitting rod perpendicular to the first rotating shaft is arranged on the first rotating shaft, and a hitting ball is arranged at one end of the hitting rod away from the first rotating shaft; the rack is provided with a driving mechanism which drives the hitting balls on the two sides to be lifted simultaneously and strikes the roller under the action of gravity.

Through adopting above-mentioned technical scheme, when needs clear up the rotary drum, the operator comes the lifting to hit the ball of beating on the beating rod through actuating mechanism, hits the ball and will strike the rotary drum automatically at last under the action of gravity, and the gravel and sand on the mesh just can drop, hits the ball and so circulates to strike the rotary drum reciprocally to reach the effect of clearance rotary drum. Compare in artificial clearance mode, this scheme can carry out the clearance of percussive to the rotary drum automatically, and the operator's that has significantly reduced work load has effectively improved the clearance efficiency of rotary drum.

The utility model discloses further set up to: the driving mechanism comprises a rotating rod fixedly sleeved at the end part of the first rotating shaft and two second rotating shafts which are rotatably connected to the rack and positioned between the two first rotating shafts, the positions of the two second rotating shafts correspond to the positions of the two first rotating shafts one by one, and the second rotating shafts are parallel to the first rotating shafts; the driving mechanism further comprises a butting rod which is eccentrically sleeved on the second rotating shaft and used for discontinuously stirring the rotating rods, and a rotating assembly which is arranged on the rack and used for driving the two second rotating shafts to synchronously and reversely rotate.

Through adopting above-mentioned technical scheme, the operator makes two synchronous and reverse emergence rotations of second pivot through rotating assembly, and the one end that the second pivot was kept away from to the butt pole will push down the dwang, and first pivot will take place rotatoryly, hits the pole and just can hit the ball along with first pivot rotation and lifting, when butt pole and dwang break away from, hits the ball and will fall and hit the rotary drum under the effect of gravity, so reciprocal, makes to hit and hits the ball and hit the rotary drum outer wall regularly. The driving mechanism has ingenious structural principle and is very convenient and fast to operate.

The utility model discloses further set up to: the rotating assembly comprises worm gears fixedly sleeved on the second rotating shaft, and the rotating directions of the two worm gears are opposite; the rotating assembly further comprises a worm which is rotatably connected to the rack and is meshed with the two worm wheels, and a second motor which is arranged on the rack and used for driving the worm to rotate.

Through adopting above-mentioned technical scheme, the operator rotates the worm through the second motor, and under the combined action of worm and two worm wheels, two second pivots just can be synchronous and reverse emergence rotation, and rotating assembly's structural principle is simple, and it is very convenient in the operation. In addition, because the linkage structure of the worm gear and the worm has the functions of amplifying torque and self-locking, the load of the second motor is reduced, the rotation of the two first rotating shafts is smoother, the positions of the first rotating shafts can be automatically locked, the hitting ball is not in contact with the rotating drum, and the centrifugal sand screening machine can smoothly screen sand and stones.

The utility model discloses further set up to: the end of the butt joint rod, far away from the second rotating shaft, is rotatably connected with a rotating wheel, and the rotating axis of the rotating wheel is parallel to the second rotating shaft.

Through adopting above-mentioned technical scheme, the runner can change the sliding friction that produces into the running friction of runner when butt joint pole and dwang contact, and this can not only weaken the butt joint pole and produce the noise when dwang contact, still can reduce the probability that butt joint pole and dwang take place the card owner, makes the linkage between butt joint pole and the dwang more smooth.

The utility model discloses further set up to: the abutting rod comprises an outer rod which is fixedly sleeved on the second rotating shaft and eccentrically arranged, and an inner rod which is embedded in the outer rod in a sliding manner and used for shifting the rotating rod; the outer rod is provided with a locking mechanism for clamping and positioning the inner rod.

Through adopting above-mentioned technical scheme, the operator slidable interior pole adjusts the overall length of butt joint pole, and the angle that the butt joint pole pushed down the dwang will change so, and is corresponding, and the rotation angle of first pivot and hitting the pole also can change along with taking place, and then finally changed the lifting height of hitting the ball, makes to hit the ball and can knock off the gravel and sand on the rotary drum better. After the inner rod slides to a proper position, an operator can position the position of the inner rod through the locking mechanism.

The utility model discloses further set up to: the locking mechanism comprises a through hole formed in the outer rod, a plurality of slots formed in the inner rod and sequentially facing the through hole in the sliding process of the inner rod, and a plug pin penetrating through the through hole and in plug-in fit with the slots.

Through adopting above-mentioned technical scheme, after interior pole slided to suitable position, the operator can make the through-hole align nearest slot again slightly slip interior pole, passes the through-hole and inserts corresponding slot afterwards with the bolt in, and then carries out the joint location to the position of interior pole, and locking mechanical system's structural principle is simple, and it is very convenient to operate. When the inner rod slides again in need, the operator pulls out the bolt can, it is equally very convenient in the operation.

The utility model discloses further set up to: and a spring for driving the bolt to be inserted into the slot is arranged on the outer side wall of the outer rod.

Through adopting above-mentioned technical scheme, the spring can order about the bolt and insert in the slot always, has effectively avoided the unexpected condition that breaks away from the slot of bolt, has guaranteed the stability between outer pole and the interior pole.

The utility model discloses further set up to: the outer wall of the striking ball is provided with a threaded hole, and the end part of the striking rod is provided with an external thread matched with the threaded hole in a threaded manner.

Through adopting above-mentioned technical scheme, the setting of screw hole and external screw thread makes the batting ball become detachable coupling mechanism with the batting pole, and the batting ball of operator's accessible change different weight is hit the effect of beating that changes the rotary drum, and then lets the gravel and sand on the rotary drum can drop more smoothly.

To sum up, the utility model discloses a beneficial technological effect does:

1. the arrangement of the first rotating shaft, the striking rod, the striking ball and the driving mechanism can automatically perform striking type cleaning on the rotating drum, so that the workload of an operator is greatly reduced, and the cleaning efficiency of the rotating drum is effectively improved;

2. the arrangement of the rotating wheel can not only weaken the noise generated when the butting rod is contacted with the rotating rod, but also reduce the probability of clamping the butting rod and the rotating rod;

3. the arrangement of the outer rod, the inner rod and the locking mechanism can change the lifting height of the batting ball, so that the batting ball can knock off the sand and stones on the rotary drum better;

4. due to the arrangement of the spring, the stability between the outer rod and the inner rod is effectively ensured;

5. the weight of the batting ball can be replaced by the arrangement of the threaded hole and the external thread, so that the batting ball can knock off the sand and stones on the rotary drum better.

Drawings

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

fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a frame; 2. a drum; 3. a first motor; 4. a first rotating shaft; 5. a striking rod; 6. hitting a ball; 7. rotating the rod; 8. a second rotating shaft; 9. a butting rod; 91. an outer rod; 92. an inner rod; 10. a worm gear; 11. a worm; 12. a second motor; 13. a rotating wheel; 14. an external thread; 15. a threaded hole; 16. a through hole; 17. a bolt; 18. a slot; 19. a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a centrifugal sand screening machine comprises a frame 1 and a roller 2 rotatably connected to the frame 1 for screening sand and stone, wherein two ends of the roller 2 are arranged in an up-down inclined manner; the centrifugal sand screening machine further comprises a first motor 3 which is arranged on the frame 1 and used for driving the roller 2 to rotate, and the first motor 3 is connected with a power supply through an electric wire. When the sand and stone are required to be screened, an operator starts the first motor 3 to rotate the drum 2, then the sand and stone are poured into the drum 2 from the upper opening, the sand and stone slide and roll in the inclined drum 2, sand passes through meshes and is accumulated on the ground, and the stone falls out from the lower opening of the drum 2.

Referring to fig. 1 and 2, the left side and the right side of the roller 2 are both provided with first rotating shafts 4 parallel to the roller 2, and the two first rotating shafts 4 are both rotatably connected to the frame 1. Every 4 last many fixedly connected with of first pivot hit pole 5, many hit pole 5 along the equidistant distribution of the length direction of first pivot 4, every hits pole 5 and all keeps perpendicular with first pivot 4, and hits pole 5 and keep away from one of first pivot 4 and serve and be equipped with the ball 6 of hitting cylinder 2. The lower ends of the two first rotating shafts 4 are fixedly sleeved with rotating rods 7. Two second rotating shafts 8 are arranged between the two first rotating shafts 4, the two second rotating shafts 8 are rotatably connected to the rack 1, the positions of the two second rotating shafts 8 correspond to the positions of the two first rotating shafts 4 one by one, and the second rotating shafts 8 are parallel to the corresponding first rotating shafts 4. Every second pivot 8 is gone up all eccentric overlaps and is equipped with butt pole 9, and butt pole 9 is used for stirring dwang 7 discontinuously. Two second pivot 8 are all fixed the cover and are equipped with worm wheel 10, and the direction of rotation of two worm wheels 10 is opposite, rotate on the frame 1 and be connected with the worm 11 with two worm wheel 10 equal meshing, still install the second motor 12 of drive worm 11 rotation on the frame 1, and second motor 12 passes through the electric wire and is connected with the power. The worm wheel 10, the worm 11 and the second motor 12 form a rotating assembly for driving the two second rotating shafts 8 to synchronously and reversely rotate; the rotating rod 7, the second rotating shaft 8, the abutting rod 9 and the rotating assembly form a driving mechanism which drives the two-side hitting balls 6 to be lifted simultaneously and hits the roller 2 under the action of gravity. When the gravel and sand on the rotary drum needs to be cleaned, the operator starts the second motor 12 to rotate the worm 11, under the linkage action of the worm 11 and the two worm gears 10, the two second rotating shafts 8 can synchronously and reversely rotate, the butt rod 9 can press down the end part of the corresponding rotary rod 7, under the butt action of the butt rod 9 and the rotary rod 7, the first rotating shaft 4 and the striking rod 5 can rotate, the striking balls 6 on the two sides can be lifted simultaneously, after the butt rod 9 is separated from the rotary rod 7, the striking balls 6 fall and strike the rotary drum under the action of gravity, so reciprocating, the striking balls 6 can automatically and regularly strike the rotary drum, and further the gravel and sand on meshes can fall off.

Referring to fig. 2, in order to reduce noise when the abutting rod 9 abuts against the rotating rod 7 and reduce the probability of the abutting rod 9 and the rotating rod 7 being jammed, a rotating wheel 13 is rotatably connected to one end of the abutting rod 9 away from the second rotating shaft 8, and the rotating axis of the rotating wheel 13 is parallel to the second rotating shaft 8.

Referring to fig. 1, an external thread 14 is provided on a side wall of one end of the striking rod 5 close to the striking ball 6, and a threaded hole 15 in threaded fit with the external thread 14 is provided on the side wall of the striking ball 6. The arrangement of the threaded hole 15 and the external thread 14 enables the hitting ball 6 and the hitting rod 5 to be a detachable connecting mechanism, so that an operator can change the hitting effect of the rotary drum by replacing the hitting ball 6 with different weights, and then the gravel can fall off more smoothly.

Referring to fig. 1 and 2, the abutting rod 9 includes an outer rod 91 with a square ring-shaped cross section fixedly sleeved on the side wall of the second rotating shaft 8, and an inner rod 92 attached to the inside of the outer rod 91 in a sliding manner, and one end of the inner rod 92 far away from the outer rod 91 is rotatably connected with the rotating wheel 13. A through hole 16 is opened on the lateral wall of one end of the outer rod 91 far away from the second rotating shaft 8, a bolt 17 is embedded in the through hole 16, a plurality of slots 18 for inserting the bolt 17 are opened on the lateral wall of the inner rod 92 corresponding to the through hole 16, the slots 18 are arranged at equal intervals along the length direction of the inner rod 92, and in the sliding process of the inner rod 92, the through hole 16 is kept right opposite to the slots 18 one by one. The through hole 16, the slot 18 and the latch 17 constitute a locking mechanism for snap-locking the inner rod 92. The operator changes the whole length of the abutting rod 9 through sliding the inner rod 92, so that the angle of the abutting rod 9 for pressing the rotating rod 7 down can be changed, correspondingly, the rotating angles of the first rotating shaft 4 and the striking rod 5 can be changed, finally, the lifting height of the striking ball 6 is changed, and the striking ball 6 can knock off the gravel on the rotating cylinder better.

Referring to fig. 2, one end of the plug 17 extending out of the outer side wall of the outer rod 91 is sleeved with a spring 19, one end of the spring 19 is fixedly connected with the outer side wall of the outer rod 91, the other end of the spring 19 is fixedly connected with one end of the plug 17 extending out of the outer side wall of the outer rod 91, when the spring 19 is in a natural state, the spring 19 pushes the plug 17 into the corresponding slot 18, and when the spring 19 is in a contracted state, the plug 17 moves away from the slot 18 and is separated from the slot 18. Due to the arrangement of the spring 19, the situation that the bolt 17 is separated from the slot 18 is effectively avoided, and the stability between the inner rod 92 and the outer rod 91 is effectively ensured.

The implementation principle of the embodiment is as follows: when the gravel and sand on the rotary drum needs to be cleaned, the operator starts the second motor 12 to rotate the worm 11, under the linkage action of the worm 11 and the two worm gears 10, the two second rotating shafts 8 can synchronously and reversely rotate, the butt rod 9 can press down the end part of the corresponding rotary rod 7, under the butt action of the butt rod 9 and the rotary rod 7, the first rotating shaft 4 and the striking rod 5 can rotate, the striking balls 6 on the two sides can be lifted simultaneously, after the butt rod 9 is separated from the rotary rod 7, the striking balls 6 fall and strike the rotary drum under the action of gravity, so reciprocating, the striking balls 6 can automatically and regularly strike the rotary drum, and further the gravel and sand on meshes can fall off.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a centrifugal sand screening machine, includes frame (1), rotates slope cylinder (2) of connection in frame (1) to and set up and be used for driving the rotatory first motor (3) of cylinder (2) in frame (1), its characterized in that: the frame (1) is rotatably connected with two first rotating shafts (4) parallel to the roller (2), and the two first rotating shafts (4) are respectively positioned at two sides of the roller (2); a hitting rod (5) which is vertical to the first rotating shaft (4) is arranged on the first rotating shaft (4), and a hitting ball (6) is arranged at one end of the hitting rod (5) far away from the first rotating shaft (4); the frame (1) is provided with a driving mechanism which drives the hitting balls (6) at the two sides to be lifted simultaneously and strikes the roller (2) under the action of gravity.

2. A centrifugal sand screen according to claim 1, wherein: the driving mechanism comprises a rotating rod (7) fixedly sleeved at the end part of the first rotating shaft (4) and two second rotating shafts (8) which are rotatably connected to the rack (1) and positioned between the two first rotating shafts (4), the positions of the two second rotating shafts (8) correspond to the positions of the two first rotating shafts (4) one by one, and the second rotating shafts (8) are parallel to the first rotating shafts (4); the driving mechanism further comprises a butting rod (9) which is eccentrically sleeved on the second rotating shaft (8) and used for intermittently stirring the rotating rod (7), and a rotating assembly which is arranged on the rack (1) and used for driving the two second rotating shafts (8) to synchronously rotate and reversely rotate.

3. A centrifugal sand screen according to claim 2, wherein: the rotating assembly comprises worm gears (10) fixedly sleeved on the second rotating shaft (8), and the rotating directions of the two worm gears (10) are opposite; the rotating assembly further comprises a worm (11) which is rotatably connected to the rack (1) and is meshed with the two worm wheels (10), and a second motor (12) which is arranged on the rack (1) and used for driving the worm (11) to rotate.

4. A centrifugal sand screen according to claim 2, wherein: the end, far away from the second rotating shaft (8), of the abutting rod (9) is connected with a rotating wheel (13) in a rotating mode, and the rotating axis of the rotating wheel (13) is parallel to the second rotating shaft (8).

5. A centrifugal sand screen according to claim 2, wherein: the abutting rod (9) comprises an outer rod (91) which is fixedly sleeved on the second rotating shaft (8) and is eccentrically arranged, and an inner rod (92) which is embedded in the outer rod (91) in a sliding manner and is used for shifting the rotating rod (7); the outer rod (91) is provided with a locking mechanism for clamping and positioning the inner rod (92).

6. A centrifugal sand screen according to claim 5, wherein: the locking mechanism comprises a through hole (16) formed in the outer rod (91), a plurality of slots (18) formed in the inner rod (92) and sequentially facing the through hole (16) in the sliding process of the inner rod (92), and a plug pin (17) penetrating through the through hole (16) and matched with the slots (18) in an inserted mode.

7. A centrifugal sand screen according to claim 6, wherein: and a spring (19) for driving the bolt (17) to be inserted into the slot (18) is arranged on the outer side wall of the outer rod (91).

8. A centrifugal sand screen according to claim 1, wherein: the outer wall of the striking ball (6) is provided with a threaded hole (15), and the end part of the striking rod (5) is provided with an external thread (14) in threaded fit with the threaded hole (15).