RU815U1 - Transport and sorting conveyor - Google Patents

Abstract

Transport and sorting conveyor, including a grating stand, equipped with end shafts covered by traction chains with scrapers, in which, at least in the form of one of the pans, it is made in the form of a sieve, characterized in that the sieve is movable in the direction transverse to the direction of movement of the traction body while it is equipped with protrusions interacting with the scrapers of the traction body.

Description

g, and: - i / io TRANSBEST EORTING CONVEYOR. , ..........-. ....-.-.; | The utility model relates to the technique of sieving materials and can be used in the construction, chemical, and mining industries, for example, in coal mines, open pits, and concentration plants for sieving according to the classes of coal, rock mass, and filling material. A known scraper conveyor with a bottom made of bobbin sieves with slots (see Diamonds H.Bi, State Duma, Trigoryuk E. Kuznetsov N.V. Enrichment and dehydration of hydraulic mines, Nedra, 1971, p. 98, Fig. 14; c .IQI, Fig. 16), intended for dehydration of pulp and deslamation of coal. The disadvantage of these conveyors is the low efficiency of their work, because the pinch sieves are installed in the conveyor bottom motionless and therefore do not contribute to shaking of the transported material and rupture of the water film between the pins, especially for slots with sizes from 0.5 mm and below. .. ,. The known conveyor adopted by us for the prototype, including the scraper conveyor .so, with a special pan with a bottom made in the form of a screening surface for screening large-sized material (see V.E. Zhukov, V.V. Vystorop, A.M. Kolchin, E.V. Grigo "ruk. Low-waste technology-coal mining, Kiev, Technika, 1984, p. 58-59, Fig. 18) .. The disadvantage of the conveyor is the insufficient efficiency of the screening process of 70, which in most cases is clearly insufficient .,. The problem solved by the proposed technical solution is to increase the efficiency The effectiveness of the screening process. The solution to this problem is achieved by the fact that the sieve is made "" "but movable in the alphabet in the transverse direction of movement of the traction body while it is equipped with protrusions that interact with the scrapers of the traction body. Indeed, the implementation of a screening surface that is movable in the direction transverse to the direction of movement of the traction body allows one to realize the oscillatory mode of its moving, which contributes to the loosening of bulk material and ultimately improves the conditions for the isolation of the under-sieve product from the original M.cl: ® B65 (- 19/00

 . .

material, and a scraper traction unit provides the required performance at significant angles of inclination of the complex.

We note that the mechanism for the implementation of the oscillatory mode of movement of the sieve is made extremely simple, namely: due to the supply of the moving soldering surface of the pan to the protrusions interacting with the scrapers of the traction body.

Comparison of the claimed technical solution with the prototype allows us to conclude that it differs significantly from the introduction of new features of the above and meets the criterion of novelty, and the simplicity of the design indicates its industrial value in many industries.

The invention is illustrated by drawings, where in Fig.1 is a schematic diagram of a transport and sorting conveyor; figure 2 - shows a section DA figL; in Fig.3 shows a section of Fig.2; figure 4 "shows a section C" figure 2.

The proposed construction of the conveyor (Fig.1,2,3,4) includes a wire rack I, consisting of interconnected pans, at the opposite ends of which there are a drive drum 2 and a tail drum 3. The drums are covered, the traction body is made of ship chains 4 with silver bars 5 closed in the form of an infinite loop. Pans include side plates (in this case, rolled) and a bottom 7 connected to them, for example, by welding.

In the bottom there are inserts made in the form of sieves 8 (in this case, two sieves), including grates 9, both end parts of which are fastened with transverse plates 10. On the upper (working) surface of the grates 9, protrusions II are placed at certain intervals from interacting with scrapers 5 of the chain traction body. The protrusions can be performed in a variety of ways, i.e. in the form of spherical, segments, ribbed. one - or two-sided rectangles (see figure 4), or even the surface of the grate can be made wavy, i.e. sinusoidal shape, etc. The fastening of the protrusions II to the grate or sieve surface can also be varied, i.e. using, welding, gluing, screwing: riveting 1vaniya. etc. The sieves can be made of sheet or shaltrovyh gratings: .. Grids 3 have side ekvezny cracks., C. “The elastic spring bands IE (in this case, two. Strips) which also pass through the slots of the sidewalls b, are placed on the same side; on one side of the sidewall b

they are fixed to the frame with © 13. The opposite sides of the elastic bands IS are free and can slide in the slots of the conveyor sidewalls.

For reliable pressing of the scrapers 5 to the working surface of the grate sieve along their entire length, rails 14 are installed on the sidewalls with the possibility of their height adjustment with screws 15. The rails at the ends are equipped with curvilinear elements for soft. Shock-free pressing of the scrapers to the sieve. In the bottoms of the troughs of the idle branch of the traction body located under the sieves, aperture 16.17 was made for skipping the sorted mag.terial. . . . . In this embodiment, for the 1st conveyor, the first sieve (when moving the chain from left to right, Fig. I) is made with the smallest dimensions, for example, for class 0 13 mm, the second sieve for mm class, etc. The c-drive drum (in this case) will. Highlight the mate. Class rial +25 mm. Note that often this vibration of the sieves can be either the same or different from each other in case of technological necessity at the same speed of movement of the traction organ. .

The vibration frequency is defined as the quotient of dividing the speed of movement of the scraper traction member by the step of the wavy surface. For example, if with spherical segmented protrusions, their largest size is 30 mm, and the distance between them is 20 mm, then the step of installing the protrusion will be 50 mm. Then, at a chain speed of I m / s, the vibration frequency will be - Q s20 Hz. By varying the speed of the chain and the pitch of the installation of the protrusions, it is possible to obtain a significant frequency range of the vibration effect on the sieve surfaces of the conveyor.

The oscillation amplitude of the sieves is determined by the height of the protrusions and should practically be in the range of 2 "mm.

The device operates as follows.

The transport and sorting conveyor is launched and after the traction body reaches the working speed, the source material is fed to it, for example, a mountain mass of class 0 “250 mm. On, the tail of the conveyor. Mountain maesa moves with scrapers 5

the traction body to eith 8, the grate of which is more than equal to e13 mm. - The scrapers 5 located on the sieve surface are pressed tightly by the side rails 14: to the grates 9 and, moving towards the ledges II and act on them in the direction of the transverse direction of movement of the traction body. The force of the gutters is transmitted to the elastic plates 12, which bend by an amount equal to the height of the protrusions II. After passage through the scraper 5 of the protrusion II, the grid-irons under the action of the elastic plates return to their original position, i.e. one oscillatory movement of the sieve will be made. Contacting with all the protrusions, the scraper provides oscillations of the sieve in a constant mode. The rock mass, falling on an oscillating sieve, will loosen, which contributes more than half HOwty to the allocation of the sublattice class, for example mm.

In the same way, screening is carried out on the second sieve 8, where the rock mass of the class, for example mm, is embedded.

Further, the remaining rock mass of class + S5 mm is allocated from the end of the conveyor. It should be noted that the screened sieve grate product passes through the idlers of the idle branch through special openings 16.17 made in the bottoms of the grate stand. Of the positive qualities of the proposed conveyor, in addition to the “laid down earlier,” it should be noted that the latter is a function of the sorting device,. performs the functions of a conveyor, while the angle of transportation can reach 20 25 25 °, and therefore the height (.and volume) of cone-shaped stacks of sorted coal can be very significant, which determines its use use in large ports or marshalling yards.

pj.,

Claims (1)

Transport and sorting conveyor, including a grating stand, equipped with end shafts covered by traction chains with scrapers, in which, at least in the form of one of the pans, it is made in the form of a sieve, characterized in that the sieve is movable in the direction transverse to the direction of movement of the traction body while it is equipped with protrusions interacting with the scrapers of the traction body.