CN221086308U - Fine sand screening equipment for mixed sand concrete - Google Patents

Abstract

The utility model provides fine sand screening equipment for mixed sand concrete, which comprises a screen box, wherein the lower end of the screen box is fixedly connected with a plurality of supporting legs, the upper side of the left end of the screen box is fixedly connected with a feed hopper, the left wall of the screen box is provided with a feed inlet, a first screen and a second screen are sequentially arranged in the screen box at intervals from top to bottom, the first screen and the second screen are obliquely arranged, and the inclination directions of the first screen and the second screen are opposite. According to the utility model, through the first screen and the second screen which are arranged up and down in the screen box, the arrangement of the two screens can increase the screening path of the mixed sand to a certain extent, so that the problems of single-layer screen screening or multi-layer combined screen screening, short screening path, screening completion only by simply contacting the screens in a rolling way, multiple screening requirements and low screening efficiency in the prior art are solved.

Description

Fine sand screening equipment for mixed sand concrete

Technical Field

The utility model relates to the technical field of screening equipment, in particular to fine sand screening equipment for mixed sand concrete.

Background

The common concrete is an artificial stone which is formed by mixing cement, coarse aggregate (broken stone or pebble), fine aggregate (sand), an additive and water and hardening. Sand and stone play a framework role in concrete and inhibit shrinkage of the cement; cement and water form cement paste which is wrapped on the surface of coarse and fine aggregates and fills gaps among the aggregates. The cement paste plays a lubricating role before hardening, so that the concrete mixture has good working performance, and the aggregates are glued together after hardening to form a strong whole. For fine aggregate, various kinds of sand, such as machine-made sand and extra fine sand, are usually used for concrete configuration due to less fine sand materials or difficult exploitation, such as mixed sand formed by mixing machine-made sand and extra fine sand, but no matter what kind of sand is used, the sand needs to be screened to a certain fineness before being used, so that the concrete configuration can be satisfied, but the existing fine sand screening equipment still has the following defects in actual use:

Conventional fine sand screening equipment adopts single-layer screen screening or multi-layer combined screen screening, the screening path is short, the screening is completed only by simply rolling the contact screen, and a large amount of qualified fine sand still is doped in the contact screen, so that multiple screening is required, the process is increased, and the screening efficiency is low.

For this reason, we propose a fine sand screening apparatus for mixed sand concrete to solve the above-mentioned problems.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model provides fine sand screening equipment for mixed sand concrete, which solves the problems of single-layer screen screening or multi-layer combined screen screening in the prior art, short screening path, completion of screening by simply contacting with the screen to roll once, multiple screening and low screening efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a mix fine sand screening installation for sand concrete, includes the screen box, the lower extreme fixedly connected with of screen box a plurality of supporting legs, the left end upside fixedly connected with feeder hopper of screen box, the feed inlet has been seted up on the left side of screen box, the screen box is interior from last to having set gradually first screen cloth, second screen cloth, first screen cloth, second screen cloth slope setting and first screen cloth and the slope opposite direction of second screen cloth, first screen cloth one end rotation sets up the left side inner wall at the screen box, and the second screen cloth rotates the setting at screen box right side inner wall, fixedly connected with first spring between the left side inner wall of first screen cloth and screen box, fixedly connected with second spring between the right side inner wall of second screen cloth and screen box, set up first bin outlet on the right side of screen box, set up the second bin outlet on the left side of screen box, the lower one end of first screen cloth extends to first bin outlet department, the lower one end extends to second bin outlet department, the inside wall rotation connecting rod has two, two profile rods have rotated the reel, two reel rods have set up the reel under the reel, the reel has rotated the reel.

Preferably, two inclined planes are symmetrically arranged on the inner bottom wall of the screen box, and the lowest part of the inclined planes is connected with the blanking opening.

Preferably, the mesh aperture of the first screen is larger than the mesh aperture of the second screen.

Preferably, the top projection of the receiving frame covers the top projection of the feed opening.

Preferably, the drive assembly includes the mounting panel with the rear end fixed connection of screen box, the mounting panel comprises tip perpendicular fixed connection's diaphragm and riser, and the diaphragm is connected with the screen box, the rear end fixed mounting of riser has the rotating electrical machines, the output of rotating electrical machines and the dwang fixed connection who is located the upside, two the pole body of dwang has all been fixed to cup joint the belt pulley, two be connected with connecting belt between the belt pulley.

Preferably, the left side and the right side of the box body are both provided with recovery boxes.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, the first screen and the second screen are arranged up and down in the screen box, the lower end of the first screen is positioned above the higher end of the second screen, the two screens are arranged to increase the screening path of the mixed sand to a certain extent, the driving assembly is arranged to drive the deflector rod to drive the screens to vibrate, and the screening effect is better and the screening efficiency is higher.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic diagram of a fine sand screening device for mixed sand concrete according to the present utility model;

Fig. 2 is a right-side view of a structure diagram of a fine sand screening device for mixed sand concrete according to the present utility model.

In the above figures: 1. a screen box; 2. a feed hopper; 3. a feed inlet; 4. a first screen; 5. a first spring; 6. a first discharge port; 7. a second screen; 8. a second spring; 9. a second discharge port; 10. a rotating lever; 11. a rotating wheel; 12. a deflector rod; 13. a mounting plate; 14. a rotating electric machine; 15. a belt pulley; 16. a connecting belt; 17. a feed opening; 18. and (5) a material receiving frame.

Detailed Description

In order to make the technical means, creation characteristics, achievement of the purpose and function of the present utility model more clear and easy to understand, the technical scheme of the present utility model is further described below with reference to the accompanying drawings and embodiments.

Referring to fig. 1-2, a fine sand screening device for mixed sand concrete, including screen box 1, screen box 1's lower extreme fixedly connected with a plurality of supporting legs, screen box 1's left end upside fixedly connected with feeder hopper 2, feed inlet 3 has been seted up on screen box 1's the left wall, screen box 1 is interior from last to being provided with first screen cloth 4, second screen cloth 7 in proper order at intervals down, first screen cloth 4, second screen cloth 7's one end all rotates the setting respectively at screen box 1 both sides inner wall, first screen cloth 4, second screen cloth 7 slope sets up and the slope opposite direction of first screen cloth 4 and second screen cloth 7, the lower one end of first screen cloth 4 is located the top of the higher one end of second screen cloth 7, the mesh aperture of first screen cloth 4 is greater than the mesh aperture of second screen cloth 7, first mixed sand filters great impurity and sand stone in the mixed sand on first screen cloth 4 at first, other grit and fine sand fall to the upper end of second screen cloth 7 from the mesh of first screen cloth 4 under self gravity, fall into the fine sand 17 and leave its fine sand on the filter inlet on the second screen cloth 7.

The first screen cloth 4 rotates the left side inner wall that sets up at screen box 1, the second screen cloth 7 rotates the left side inner wall that sets up at screen box 1, fixedly connected with first spring 5 between the left side inner wall of first screen cloth 4 and screen box 1, fixedly connected with second spring 8 between the right side inner wall of second screen cloth 7 and screen box 1, first bin outlet 6 has been seted up on the right side of screen box 1, second bin outlet 9 has been seted up on the left side of screen box 1, the left and right sides of screen box 1 all is provided with the collection box, be convenient for collect the great impurity and grit and other grit of first bin outlet 6 and 9 discharges, on the one hand be convenient for centralized processing, on the other hand also conveniently pour it into feeder hopper 2 again and sieve here.

The lower one end of first screen cloth 4 extends to first bin outlet 6 department, the lower one end of second screen cloth 7 extends to second bin outlet 9 department, the interior back wall rotation of screen box 1 is connected with two dwang 10, two dwang 10 extend to the rear side of screen box 1, the rear end of screen box 1 is provided with the pivoted actuating assembly of control dwang 10, actuating assembly includes the mounting panel 13 with the rear end fixed connection of screen box 1, mounting panel 13 comprises tip perpendicular fixed connection's diaphragm and riser, and the diaphragm is connected with screen box 1, the rear end fixed mounting of riser has rotating electrical machines 14, the output and the dwang 10 fixed connection that is located the upside of rotating electrical machines 14, the shaft of two dwang 10 has all fixedly cup jointed belt pulley 15, be connected with connecting belt 16 between two belt pulley 15, drive two dwang 10 rotations through a rotating electrical machines 14.

The shafts of the two rotating rods 10 are fixedly sleeved with rotating wheels 11 below the first screen 4 and the second screen 7, the outer sides of the rotating wheels 11 are fixedly connected with deflector rods 12, and the deflector rods 12 rotate to drive the first screen 4 and the second screen 7 to vibrate.

A blanking opening 17 is formed in the bottom wall of the screen box 1, a material receiving frame 18 is arranged below the screen box 1, the material receiving frame 18 is located right below the blanking opening 17, two inclined planes are symmetrically arranged on the inner bottom wall of the screen box 1, and the lowest position of each inclined plane is connected with the blanking opening 17.

The top projection of the receiving frame 18 covers the top projection of the blanking port 17, ensuring that fine sand falling from the blanking port 17 is collected by the receiving frame 18.

The detailed working process of the utility model is as follows:

When the sand mixer is used, mixed sand is poured into the screen box 1 from the feed hopper 2, firstly, the mixed sand filters larger impurities and sand stones in the mixed sand on the first screen 4, other sand stones and fine sand fall to the upper end of the second screen 7 from the screen holes of the first screen 4 under the self gravity, the fine sand is filtered and falls into the feed opening 17 through the second screen 7, sand stones are left on the second screen 7, the rotating motor 14 drives the two rotating rods 10 to rotate, the rotating wheels 11 and the deflector rod 12 are driven to rotate, the first screen 4 and the second screen 7 are driven to vibrate, and the first screen 4 and the second screen 7 are arranged in a matching inclined mode, so that the screening effect and the efficiency of the mixed sand are more facilitated.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (6)

1. Fine sand screening equipment for mixed sand concrete, which is characterized in that: including sieve case (1), the lower extreme fixedly connected with of sieve case (1) is a plurality of supporting legs, left end upside fixedly connected with feeder hopper (2) of sieve case (1), feed inlet (3) have been seted up on the left side wall of sieve case (1), first screen cloth (4), second screen cloth (7) have been set up from last interval down in proper order in sieve case (1), first screen cloth (4), second screen cloth (7) slope sets up and the slope opposite direction of first screen cloth (4) and second screen cloth (7), first screen cloth (4) one end rotation sets up the left side inner wall at sieve case (1), second screen cloth (7) rotate and set up at sieve case (1) right side inner wall, fixedly connected with first spring (5) between the left side inner wall of first screen cloth (4) and sieve case (1), first drain (6) have been seted up on the right side of sieve case (1) on the slope setting up and first screen cloth (4) and second screen cloth (7), second screen cloth (7) are lower than the drain opening (9) are rotated to the drain opening (9) of second screen cloth (1), two dwang (10) extend to the rear side of sieve case (1), the rear end of sieve case (1) is provided with control dwang (10) pivoted drive assembly, two the pole body of dwang (10) has all fixedly cup jointed runner (11) in the below of first screen cloth (4), second screen cloth (7), the outside fixedly connected with driving lever (12) of runner (11), feed opening (17) have been seted up on the diapire of sieve case (1), the below of sieve case (1) is provided with receipts material frame (18), and receives material frame (18) to be located under feed opening (17).

2. The fine sand screening apparatus for mixed sand concrete according to claim 1, wherein: two inclined planes are symmetrically arranged on the inner bottom wall of the screen box (1), and the lowest part of each inclined plane is connected with the blanking opening (17).

3. The fine sand screening apparatus for mixed sand concrete according to claim 1, wherein: the mesh aperture of the first screen (4) is larger than that of the second screen (7).

4. The fine sand screening apparatus for mixed sand concrete according to claim 1, wherein: the top projection of the material receiving frame (18) covers the top projection of the material discharging opening (17).

5. The fine sand screening apparatus for mixed sand concrete according to claim 1, wherein: the driving assembly comprises a mounting plate (13) fixedly connected with the rear end of the screen box (1), the mounting plate (13) is composed of a transverse plate and a vertical plate which are vertically and fixedly connected with the end part of the mounting plate, the transverse plate is connected with the screen box (1), a rotating motor (14) is fixedly arranged at the rear end of the vertical plate, the output end of the rotating motor (14) is fixedly connected with a rotating rod (10) positioned at the upper side, two belt pulleys (15) are fixedly sleeved on the rod bodies of the rotating rod (10), and a connecting belt (16) is connected between the two belt pulleys (15).

6. The fine sand screening apparatus for mixed sand concrete according to claim 1, wherein: the left side and the right side of the screen box (1) are both provided with recovery boxes.