CN209791943U

CN209791943U - Grit sieving mechanism

Info

Publication number: CN209791943U
Application number: CN201920499705.0U
Authority: CN
Inventors: 高军
Original assignee: Xi'an Haitian Building Materials Co Ltd
Current assignee: Xi'an Haitian Building Materials Co Ltd
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2019-12-17
Anticipated expiration: 2029-04-12

Abstract

The utility model relates to a sand and stone screening device, which comprises a frame, an inner layer rotating screen is horizontally arranged on the frame, a shaft bracket is arranged in the inner layer rotating screen, the shaft bracket is fixedly connected with the inner layer rotating screen, a driving motor is arranged on the frame, the driving motor is fixedly connected with the shaft bracket, a hopper is arranged on the frame, a screw conveyer is arranged below the inner layer rotating screen, an opening is arranged on the side wall of the top of the screw conveyer, a sand collecting plate is obliquely arranged between the screw conveyer and the inner layer rotating screen, a clear water pipe is arranged on the inner wall of the top of the screw conveyer, a plurality of spray heads are communicated on the clear water pipe, a discharge port is arranged on the screw conveyer far away from the opening end and is inclined along the direction deviating from the ground, by adopting the technical proposal, when sand and stone reach the screw conveyer through conveying, the sand and stone are washed by water flow sprayed by the spray heads, the cleaned sand is conveyed by the screw conveyer and discharged from the discharge hole, so that the soil content in the sand can be reduced.

Description

Grit sieving mechanism

Technical Field

The utility model belongs to the technical field of the technique of concrete and specifically relates to a grit sieving mechanism is related to.

background

With the continuous development of the building industry, the requirements of the building engineering on building materials are continuously improved, the purity of the building materials must meet the requirements of building standards, a drum-type sand screening machine is often used in a concrete mixing plant and is mainly used for separating particles which do not meet the requirements, such as pebbles, mud blocks and the like in sand, a screen cylinder of the drum-type sand screening machine is usually screened by using a 10-millimeter square-hole screen as a standard, and the gravels which meet the building standards are screened and used as materials for manufacturing concrete.

Chinese patent No. CN206405022U discloses a sand-stone separating device, which comprises a supporting frame for supporting, a storage hopper for storing raw materials, and a screening roller for separating sand-stone, wherein the screening roller has an inlet at one axial end, the storage hopper and the screening roller are both fixed on the supporting frame, the storage hopper is located above the inlet, openings are provided at both ends of the storage hopper, the lower end opening is connected with a curved external pipeline, the external pipeline is extended into the screening roller through the inlet at the end away from the storage hopper, and the external pipeline is clamped and embedded in the screening roller, the outer wall of the screening roller near one end of the external pipeline is further connected with a driving motor for driving the screening roller to rotate, the driving motor is fixed on the supporting frame, when the sand-stone separating device works, the driving motor drives the screening roller to rotate, and simultaneously, add the grit to the storage hopper in, the grit will enter into the screening cylinder through external pipeline in, the grit of particle diameter be less than the screening cylinder on the sieve mesh will pass through sieve mesh outflow screening cylinder, the grit of particle diameter be greater than the screening cylinder on the sieve mesh will stay in the screening cylinder, realized the screening to the grit.

The effectual efficiency that has improved the grit screening of this scheme, but among the above-mentioned technical scheme, the grit can be mingled with partial earth when being sieved out, and the direct use thoughtlessly has the grit preparation concrete of earth, can influence the performance of concrete.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can wash grit sieving mechanism of grit, it has the advantage that can reduce earth piece content in the grit.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a sand screening device comprises a rack, wherein a cylindrical inner rotary screen is horizontally arranged on the rack, a shaft bracket used for supporting the inner rotary screen is arranged in the inner rotary screen, the shaft bracket is fixedly connected with the inner rotary screen, a driving motor used for driving the rotary screen to rotate is arranged on the rack, the driving motor is fixedly connected with the shaft bracket, a hopper is arranged on the rack, the hopper is arranged at the end, close to the driving motor, of the inner rotary screen and extends into the inner rotary screen through a material conveying port, a spiral conveyor is obliquely arranged below the inner rotary screen, an opening is formed in the side wall of the top of the spiral conveyor, a sand collecting plate is obliquely arranged between the spiral conveyor and the inner rotary screen and is positioned under the inner rotary screen, one end of the sand collecting plate is obliquely inclined towards the opening and positioned right above the opening, a clear water pipe is arranged on the inner wall of the top of the spiral conveyor, the clean water pipe is communicated with a plurality of spray heads along the axial direction, and the spiral conveyor is far away from the opening end and is provided with a discharge port and inclines along the direction deviating from the ground.

By adopting the technical scheme, when the sandstone screening machine works, firstly, the driving motor and the water pump are turned on, the driving motor drives the rotary screen to rotate, the water pump supplies water to the clean water pipe, the water flow is sprayed in the screw conveyer through the spray head, then, the sand to be screened is added into the hopper, the sand to be screened enters the rotary sieve through the hopper, at the moment, the sand with smaller diameter in the sand to be screened will pass through the rotary screen and fall onto the sand collecting plate positioned right below the rotary screen, the sand will slide down along the inclined sand collecting plate due to the gravity action and enter the screw conveyer through the opening, at this time, the grit will receive the washing of shower nozzle spun rivers, and the earth in the grit can be dissolved in the rivers, and the discharge gate discharge is followed in the transport of screw conveyer through abluent grit, can reduce the earth content in the grit after the screening like this, guarantees the performance of concrete.

The utility model discloses further set up to: the one end that screw conveyer kept away from the discharge gate is equipped with the breach, screw conveyer passes through the breach and links to each other with the sewage pipe, the sewage pipe intercommunication has the sedimentation tank, be equipped with the water pump in the sedimentation tank, the delivery port and the clean water pipe of water pump link to each other.

Through adopting above-mentioned technical scheme, the rivers that have washd the grit will collect to breach department along the screw conveyer axial, when the water level risees to the breach, rivers can flow into the sedimentation tank through the sewage pipe in, the rivers that contain earth are through deposiing in the sedimentation tank, earth in the rivers will deposit the bottom of sedimentation tank, in the clear water pipe is carried once more to the water through the water pump of sediment, wash subsequent grit from the shower nozzle blowout, realize the cyclic utilization of water resource, the water resource has been practiced thrift like this.

The utility model discloses further set up to: and a filter cover is arranged at the notch.

Through adopting above-mentioned technical scheme, rivers get into the sewage pipe and reachd the sedimentation tank through the filter mantle of breach department after wasing the grit, and filter mantle can prevent the grit to pass through the breach and enter into the sewage pipe at this in-process to avoid causing the jam, improved the reliability of this grit sieve separator like this.

The utility model discloses further set up to: the sedimentation tank is internally provided with a filter screen along the vertical direction, the filter screen divides the sedimentation tank into two parts, a sewage pipe and a water pump are respectively arranged at two sides of the filter screen, and one side of the sedimentation tank communicated with the sewage pipe is provided with a drain valve on the side wall close to the bottom of the sedimentation tank.

Through adopting above-mentioned technical scheme, enter into the rivers that contain earth in the sedimentation tank through the sewage pipe, will pass through the filter screen when entering into the opposite side from one side of sedimentation tank, the filter screen can separate earth and keep off the one side of connecting the sewage pipe at the sedimentation tank, make it comparatively clean to enter into the rivers that the sedimentation tank set up water pump one side through the filter screen, rivers through the filter screen can use immediately like this, the utilization efficiency of circulating water is improved, when earth in the sedimentation tank deposits more, open and be close the drain valve that the bottom set up on the sedimentation tank lateral wall, the rivers can be with in coordination sedimentation tank sedimentary earth from the drain valve wash out the sedimentation tank, conveniently clear up the sedimentation tank.

The utility model discloses further set up to: an outer layer rotating sieve is arranged outside the inner layer rotating sieve, the outer layer rotating sieve is fixedly connected to the shaft bracket, and a gap is formed between the outer layer rotating sieve and the inner layer rotating sieve.

Through adopting above-mentioned technical scheme, the grit gets into the rotary screen back through the hopper, and the grit receives the effect that comes from the inlayer rotary screen, and the less grit of diameter will pass through the inlayer rotary screen, enters into the clearance between inlayer rotary screen and the outer rotary screen, then the grit needs the outer rotary screen of rethread to reach the sand collection board, because the inlayer rotary screen can probably be damaged by pebble and clod, the outer rotary screen can guarantee this grit sieve separator's normal work after the damage of inlayer rotary screen like this, guarantees that the grit of selecting is qualified.

The utility model discloses further set up to: can dismantle in the hopper and be provided with the filter frame, the frame and the hopper inner wall butt of filter frame.

By adopting the technical scheme, when the gravel to be screened is added into the hopper, the gravel must pass through the filter frame, and the filter frame can filter the pebbles and the mud blocks with larger volume in advance, so that the larger pebbles and the mud blocks can be prevented from entering the rotary screen, the rotary screen is not easily damaged by the larger pebbles and the mud blocks during working, and the workload of the rotary screen is reduced, and the reliability of the rotary screen during working is also improved.

The utility model discloses further set up to: the conveying belt is arranged on the rack and is arranged below the spiral conveyor.

Through adopting above-mentioned technical scheme, the grit is at the back of rotating the sieve screening and wasing in screw conveyer, through screw conveyer carry the conveyer belt on, required feed bin is carried to the conveyer belt, uses manpower sparingly like this, carries the convenience.

The utility model discloses further set up to: and a plurality of scraping plates are arranged on the rack along the axial direction of the rotary screen, and are arranged right above the rotary screen and abutted against the rotary screen.

Through adopting above-mentioned technical scheme, change the sieve at the during operation, the scraper blade butt on the outer wall of outer commentaries on classics sieve, when changeing the sieve and rotate the time and produce the friction with the scraper blade, will block up the grit in changeing the sieve mesh and scrape off, guaranteed the normal work of changeing the sieve like this, improve the reliability of this grit sieve separator.

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

1. The water flow sprayed out by the spray head washes the sandstone, so that the content of soil in the sandstone is reduced, and the performance of concrete is ensured;

2. Water resources are recycled through a sedimentation tank and a water pump;

3. The filter frame in the hopper and the double-layer rotary screen ensure the reliability of the sandstone screening device during operation.

Drawings

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

Fig. 2 is a sectional view of a part of the structure of the present invention, which is intended to show the inner rotary screen, the outer rotary screen and the shaft bracket.

Fig. 3 is a cross-sectional view of the screw conveyor of the present invention.

In the figure, 1, a frame; 11. a squeegee; 21. a drive motor; 22. an inner layer is sieved; 23. a pedestal; 24. rotating the screen on the outer layer; 3. a hopper; 31. a filter frame; 4. a sand collection plate; 51. a screw conveyor; 511. a filter housing; 512 gaps; 513. a discharge port; 514. an opening; 52. a clear water pipe; 53. a spray head; 54. a sewage pipe; 55. a water pump; 56. a sedimentation tank; 561. a filter screen; 562. a drain valve; 6. and (4) a conveyor belt.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a sand screening device, which comprises a frame 1, a driving motor 21 arranged on the frame 1, a hopper 3 arranged on the frame 1 and a shaft bracket 23 horizontally arranged on the frame 1, a filter frame 31 is detachably arranged in the hopper 3, the frame of the filter frame 31 is abutted against the inner wall of the hopper 3, referring to fig. 2, a cylindrical inner rotary screen 22 and an outer rotary screen 24 are respectively fixedly arranged outside the shaft bracket 23, the outer rotary screen 24 is arranged outside the inner rotary screen 22, a gap is arranged between the inner rotary screen 22 and the outer rotary screen 24, a plurality of scraping plates 11 are arranged on the frame 1 along the axial direction of the outer rotary screen 24, each scraping plate 11 is arranged right above the outer rotary screen 24 and abutted against the outer rotary screen 24, one end of the shaft bracket 23 is fixedly connected with the driving motor 21 for driving the shaft bracket 23 to rotate, the hopper 3 is arranged at the end of the inner rotary screen 22 close to the driving motor 21 and extends into the inner rotary screen 22, the sand collecting plate 4 is obliquely arranged below the outer rotary screen 24, in the embodiment, five scraping plates 11 are arranged, the length of the inner rotary screen 22 is equal to that of the outer rotary screen 24, and the axes of the inner rotary screen 22, the outer rotary screen 24 and the shaft bracket 23 are overlapped.

Referring to fig. 1, a screw conveyor 51 is obliquely arranged below a sand collecting plate 4, an opening 514 is arranged on the side wall of the end, close to the lower position of the sand collecting plate 4, of the screw conveyor 51, the opening 514 is positioned right below the end, close to the sand collecting plate 4, of the lower position of the sand collecting plate 4, a discharge port 513 is arranged at the other end of the screw conveyor 51, a conveyor belt 6 is arranged below the discharge port 513, a clean water pipe 52 is arranged on the inner wall of the top of the screw conveyor 51, referring to fig. 3, a plurality of spray heads 53 are arranged on the pipe wall, close to the conveyor belt 6, of the clean water pipe 52 along the axial direction of the screw conveyor 51, a notch 512 is arranged at one end, far away from the discharge port 513, and, the cross section of the sand collecting plate 4 is arc-shaped, the diameter of the sand collecting plate 4 is larger than that of the outer layer rotating screen 24, three spray heads 53 are arranged, and the notches 512 are arranged at the upper part of the shell wall at the end part of the spiral conveyor 51.

Referring to fig. 1 and 3, a sewage pipe 54 is arranged on the wall of the gap 512 of the screw conveyor 51, the sewage pipe 54 is communicated with the sedimentation tank 56, a filter screen 561 is vertically arranged in the sedimentation tank 56, the sedimentation tank 56 is divided into two parts by the filter screen 561, the sewage pipe 54 is communicated with one side, a water pump 55 is arranged in the sedimentation tank 56 on the other side, the water outlet end of the water pump 55 is connected with the clean water pipe 52, and a drain valve 562 is arranged on the side wall of one side of the sedimentation tank 56, which is communicated with the sewage pipe 54, near the bottom of.

the implementation principle of the embodiment is as follows: firstly, the driving motor 21 and the water pump 55 are turned on, the driving motor 21 drives the inner rotary screen 22 and the outer rotary screen 24 to synchronously rotate, the water pump 55 supplies water to the clean water pipe 52, the water flow is sprayed into the screw conveyor 51 through the spray nozzle 53, then, sand to be screened is added into the hopper 3, the sand to be screened enters the rotating inner rotary screen 22 through the hopper 3, at the moment, the sand with smaller diameter in the sand to be screened can pass through the inner rotary screen 22 and the outer rotary screen 24 and fall onto the sand collecting plate 4 positioned right below the outer rotary screen 24, the sand slides down along the inclined sand collecting plate 4 due to gravity and enters the screw conveyor 51 through the opening 514, at the moment, the sand is washed by the water flow sprayed from the spray nozzle 53, soil in the sand can be dissolved into the water flow, the washed sand is conveyed by the screw conveyor 51 and discharged from the discharge port 513, the sand discharged from the discharge port 513 falls on the conveyor belt 6 located below the discharge port 513, and is conveyed to a required position through the conveyor belt 6, meanwhile, sewage after sand cleaning flows into the sedimentation tank 56 through the sewage pipe 54, the sewage is filtered by the filter screen 561 in the sedimentation tank 56 to be clear again, and the sewage is injected into the clean water pipe 52 through the water pump 55 and is sprayed out from the spray head 53, so that subsequent sand is cleaned.

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 grit sieving mechanism which characterized in that: the sand collection device comprises a rack (1), wherein a cylindrical inner rotary screen (22) is horizontally arranged on the rack (1), a shaft bracket (23) used for supporting the inner rotary screen (22) is arranged in the inner rotary screen (22), the shaft bracket (23) is fixedly connected with the inner rotary screen (22), a driving motor (21) used for driving the inner rotary screen (22) to rotate is arranged on the rack (1), the driving motor (21) is fixedly connected with the shaft bracket (23), a hopper (3) is arranged on the rack (1), the hopper (3) is arranged at the end, close to the driving motor (21), of the inner rotary screen (22) and a material transmission port extends into the inner rotary screen (22), a spiral conveyor (51) is obliquely arranged below the inner rotary screen (22), an opening (514) is arranged on the side wall of the top of the spiral conveyor (51), and a sand collection plate (4) is obliquely arranged between the spiral conveyor (51) and the inner rotary screen (22), the sand collection plate (4) is located under the inner rotary screen (22), one end of the sand collection plate (4) inclines towards the opening (514) and is located right above the opening (514), a clear water pipe (52) is arranged on the inner wall of the top of the spiral conveyer (51), a plurality of spray heads (53) are communicated with the clear water pipe (52) along the axial direction, and the end of the spiral conveyer (51) far away from the opening (514) is provided with a discharge hole (513) and inclines along the direction deviating from the ground.

2. A sand screening apparatus according to claim 1, wherein: one end, far away from the discharge hole (513), of the spiral conveyor (51) is provided with a notch (512), the spiral conveyor (51) is connected with a sewage pipe (54) through the notch (512), the sewage pipe (54) is communicated with a sedimentation tank (56), a water pump (55) is arranged in the sedimentation tank (56), and a water outlet of the water pump (55) is connected with a clean water pipe (52).

3. A sand screening apparatus according to claim 2, wherein: a filter cover (511) is arranged at the notch (512).

4. A sand screening apparatus according to claim 3, wherein: be equipped with filter screen (561) along vertical direction in sedimentation tank (56), filter screen (561) divide into two parts with sedimentation tank (56), and sewage pipe (54) and water pump (55) set up respectively in the both sides of filter screen (561), and one side of sedimentation tank (56) intercommunication sewage pipe (54) is provided with drain valve (562) on the lateral wall that is close sedimentation tank (56) bottom.

5. A sand screening apparatus according to claim 1, wherein: an outer rotary screen (24) is arranged outside the inner rotary screen (22), the outer rotary screen (24) is fixedly connected to the shaft frame (23), and a gap is formed between the outer rotary screen (24) and the inner rotary screen (22).

6. a sand screening apparatus according to claim 4, wherein: can dismantle in hopper (3) and be provided with filter frame (31), the frame and the hopper (3) inner wall butt of filter frame (31).

7. A sand screening apparatus according to claim 1, wherein: the conveyor belt (6) is arranged on the rack (1), and the conveyor belt (6) is arranged below the spiral conveyor (51).

8. A sand screening apparatus according to claim 1, wherein: a plurality of scraping plates (11) are arranged on the rack (1) along the axial direction of the rotary screen, and the scraping plates (11) are all arranged right above the outer rotary screen (24) and are abutted against the outer rotary screen (24).