CN208991189U - A kind of combined type sieve sieving concrete coarse aggregate - Google Patents

Abstract

The utility model discloses the combined type sieves that one kind can sieve concrete coarse aggregate, it is made of large aperture sieve, small-bore sieve, support device and bracket.The large aperture sieve is made of screen stencil sheet and bound edge frame, and screen stencil sheet can require to replace according to aperture, and bound edge frame one end and small-bore sieve are hinged, and the other end is hinged with support rod；The small-bore sifting-bed inclination is fixed, and is fixedly connected with bracket；The support device is made of support rod and clamper, and large aperture sieve and each hinged support rod of small-bore sieve, clamper fix the other end of two support rods；The bracket is made of high trestle and low trestle, and bracket is fixed with small-bore sieve with welding form, and a universal wheel is respectively installed in the root of low trestle two sides.The apparatus structure is simple, easy to use, can once sieve the coarse aggregate of certain particle size interval, greatly improve screening efficiency.

Description

A kind of combined type sieve sieving concrete coarse aggregate

Technical field

The utility model relates to concrete mix material screening implements more particularly to one kind can sieve concrete coarse aggregate Combined type sieve.

Background technique

Concrete is most common construction material at present, and coarse aggregate is the important component of concrete.Coarse aggregate exists Skeleton function is played in concrete, there are commonly rubble and two kinds of cobble, grain composition directly affects the intensity of concrete, resists The mechanical performance indexs such as infiltration, durability.Grain composition is related with the selection of particle size interval, and gradation is higher, and particle size range is bigger, no Requirement of the congener concrete to the coarse aggregate size upper limit is different, according to " design of common concrete proportioning regulation " (JGJ55-2000), the general maximum particle diameter of high-strength concrete is no more than 31.5mm, and water-tight concrete then requires to be no more than 40mm. Partial size is bigger, and the probability of existing defects is bigger inside particle, and the speed that particle sinks in concrete mix is faster, causes Concrete particle is unevenly distributed, it is therefore desirable to screen out the coarse aggregate greater than the partial size upper limit.

Common sieve can only generally sieve the partial size upper limit of coarse aggregate, so that fine aggregate still has wherein after sieving, If being completely used as coarse aggregate, sand coarse aggregate ratio is increased, and excessively high sand coarse aggregate ratio is easy to generate laminated segregation and bleeding and reduction The mobility of concrete mix leads to concrete stability, strength reduction.Therefore fine aggregate is screened out also to be necessary.

Before the utility model, application No. is a kind of discrete carpolite classification dresses of 200710019815.4 Invention Announce It sets, including driving screen box frame and multilayer screen cloth to make vibrating motor of reciprocating vibration, which is vibration source, multilayer screen cloth Sieve plate is curved configuration, and the sieve pore on sieve plate is rounding wimble structure, and the leading portion of multilayer screen cloth is the arrangement of isopachous sieving.Stone Son is entered by the feed inlet of screen box frame, and the equal thick screen for first reaching first layer compass screen surface is segmented sieve, using the screening of several layers of sieves, Guarantee that the frequency of shock electric machine is suitable with the intrinsic frequency of sieve plate in screening process, finally make stone be divided into six it is different etc. Grade, but the equipment mechanism is complicated, heavy, and the frequency of motor and sieve plate is difficult to control, once blocking, will lead to the clear of stone Reason is very difficult, influences to sieve the progress of work.

Application No. is a kind of End-suspended crushed stone vibrating screens of 201210278932.3 Invention Announce, including drawstring, sieve And bracket.By inclined vibrating screen, the process that rubble rolls downwards by the gravity of itself, respectively from aperture, mesoporous, macropore It leaks out, and the drive sieve of the eccentric shaft by being connected to the motor rolls and shakes to cause drop rubble on the ground, avoids staling off sieve pore, but should Device is rocked due to sieve, and part rubble can be made to cross the sieve pore that should enter and the sieve pore by next stage, be easy to cause The rubble of final sizing mutually adulterates.

Existing defect is invented for above, it is simple, easy to use to need to design a kind of structure, can disposably sift out certain The device of particle size interval inner concrete coarse aggregate.

Utility model content

For the above-mentioned deficiency of existing concrete coarse aggregate screening plant, the utility model, which provides one kind, can sieve coagulation The combined type sieve of native coarse aggregate.

The utility model one kind can sieve the combined type sieve of concrete coarse aggregate, which is characterized in that it is by large aperture Sieve, small-bore sieve, support device and bracket composition.The large aperture sieve, is made of, sieve screen stencil sheet and bound edge frame Piece can require to replace according to aperture, and bound edge frame one end and small-bore sieve are hinged, and the other end is hinged with support rod, on the bound edge frame Several bolts hole are equally spaced, are applied in combination with steel plate washer with gravity flow screen mesh sheet；The small-bore sifting-bed inclination is fixed, with Bracket is fixedly connected, hinged with large aperture sieve, to screen out fine aggregate；The support device is by support rod and clamper group At, support rod section is square, large aperture sieve and each hinged support rod of small-bore sieve, two support rods it is another End is by gripper, and clamper is made of two symmetrical intermediate plates, and intermediate plate height of projection is slightly less than support rod section side length, wide Degree is slightly larger than section side length, has sheet rubber inside intermediate plate, increases the friction between clamper and support rod, and outside is furnished with spiral shell Bolt；The bracket is made of high trestle and low trestle, so that small-bore sieve has certain inclination angle, two pack supports and small-bore Sieve is fixed with welding form, and a universal wheel is respectively installed in the root of low trestle two sides, can be convenient the movement of device, and determining should Behind the position of device, the displacement of its fixed constraint device is made by the brake block of universal wheel.

The utility model one kind can sieve the application method of the combined type sieve of concrete coarse aggregate are as follows: should firstly, pushing Device is steadily placed on work ground；Second step requires to select suitable screen stencil sheet according to concrete material；Third step is led to It crosses bolt and steel plate washer is fixed on bound edge frame, form firm large aperture sieve；4th step selects large aperture sieve suitable Tilt angle is fixed using support device；Finally, coarse aggregate is poured on the sieve of large aperture, screening work is carried out.

The combined type sieve that the utility model one kind can sieve concrete coarse aggregate has the advantage that

(1) primary sieving can screen out contained fine aggregate in excessive partial size coarse aggregate and coarse aggregate, reduce workload, mention High screening efficiency；

(2) large aperture screen stencil sheet can be freely replaced, selects corresponding sieve for the coarse aggregate size upper limit of test requirements document Piece；

(3) large aperture sieve and bracket are connected with articulated form, and sieve can be freely rotated, and facilitate adjusting angle, and energy Angle is carried out with support device to fix, and when which leaves unused, be can be folded, is effectively reduced the occupancy in space；

(4) universal wheel is installed in the root of low trestle two sides, when pushing the device, realizes flexibly mobile.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the schematic cross-section of clamping device in the utility model.

Marginal data: the large aperture 1- sieve；The small-bore 2- sieve；3- support rod；4- clamper；5- bracket；6- universal wheel； 7- intermediate plate；8- sheet rubber；9- bolt；10- nut；11- bound edge frame；12- steel plate washer；13- screen stencil sheet.

Specific embodiment

The utility model is described further with example with reference to the accompanying drawing.

As shown in Figure 1, the utility model one kind can sieve the combined type sieve of concrete coarse aggregate, which is characterized in that it It is made of large aperture sieve 1, small-bore sieve 2, support rod 3, clamper 4, bracket 5；The large aperture sieve 1 is by sieve Piece 13 and bound edge frame 11 form, and screen stencil sheet 13 can require to replace according to aperture, and 11 one end of bound edge frame and small-bore sieve 2 are hinged, The other end and support rod 3 are hinged, are equally spaced several bolts hole on the bound edge frame 11, are applied in combination with steel plate washer 12 with fixation Screen stencil sheet 13；2 inclination angle of small-bore sieve is fixed, and is fixedly connected with bracket 5,5mm is generally selected in aperture, to screen out Fine aggregate；3 section of support rod is square, and totally two, 3 one end of support rod and sieve are hinged, and the other end is free, macropore Diameter sieve 1 and each hinged support rod 3 of small-bore sieve 2；The clamper 4 is made of two symmetrical intermediate plates 7, intermediate plate 7 Height of projection is slightly smaller than 3 section side length of support rod, and width is slightly larger than section side length, has sheet rubber 8 inside intermediate plate 7, increase Friction between clamper 4 and support rod 3 is furnished with bolt 9 outside intermediate plate 7；The bracket 5 divides high trestle and low trestle, with Make small-bore sieve 2 that there is certain inclination angle, the root of low trestle two sides respectively installs a universal wheel 6, can be convenient the shifting of device It is dynamic.

The specific manufacturing process of the large aperture sieve 1, screen stencil sheet 13 are layed on bound edge frame 11, and area is selected to be greater than The steel plate washer 12 of sieve pore, places it on bound edge frame 11, and bolt 9 sequentially passes through screen stencil sheet 13, bound edge frame from above steel plate washer 12 11, nut 10 is tightened, all bolts 9 are successively installed.

The combined type sieve that the utility model one kind can sieve concrete coarse aggregate is steadily put in use, pushing the device It is placed on work ground, is required to select suitable screen stencil sheet 13 according to concrete material, be fixed on by bolt 9 and steel plate washer 12 On bound edge frame 11, firm large aperture sieve 1 is formed, suitable angle is then selected, it will using the clamper 4 on support rod 3 It is fixed, and screening work can be carried out, when coarse aggregate is poured on large aperture sieve 1, due to large aperture sieve 1 be it is inclined, It is rolled downwards by coarse aggregate self gravitation effect, during lower rolling, big coarse aggregate slides to ground, small thick bone through sieve Material is fallen from mesh, and when small coarse aggregate touches inclined small-bore sieve 2, continuation is downward with the gravity of itself Rolling, during lower rolling, the coarse aggregate that wherein partial size is less than 2 aperture of small-bore sieve is fallen from mesh, is greater than small-bore The coarse aggregate in 2 aperture of sieve slides to ground through sieve, and then obtains the concrete coarse aggregate of required certain particle size interval.

Claims (1)

1. the combined type sieve that one kind can sieve concrete coarse aggregate, which is characterized in that it is sieved by large aperture sieve, small-bore Net, support device and bracket composition, the large aperture sieve are made of screen stencil sheet and bound edge frame, and screen stencil sheet can be according to aperture It is required that replacement, bound edge frame one end and small-bore sieve are hinged, and the other end is hinged with support rod, if being equally spaced on the bound edge frame Bolt stem hole；The small-bore sifting-bed inclination is fixed, and is fixedly connected with bracket, hinged with large aperture sieve；The support Device is made of support rod and clamper, and support rod passes through gripper；The bracket is made of high trestle and low trestle, Two pack supports are fixed with small-bore sieve with welding form, and a universal wheel is respectively installed in the root of low trestle two sides.