SU823131A2 - Apparatus for shaping articles of concrete mixes - Google Patents

Description

(54) DEVICE FOR FORMING PRODUCTS FROM CONCRETE MIXTURES

The invention relates to devices (3) Molding concrete mixtures and can be used in installations for the molding of concrete and iron concrete from aelium. According to the main author NI 365,255, it is known ycTpofeJTBo for molding concrete mixtures made from concrete mixtures, which is included in which has a form, a power stamp simulated on a vibrating plate, a fuzz chamber, in the upper part of which there is a stamp fixed with a pvvmoprivooy of its vertical alternation LI}. However, this device does not provide for the complete degassing of the concrete mix, as Part of the air mechanically trapped, adsorbed on the surfaces of solid particles and dissolved in water becomes entrapped in the thickness of the white concrete mixture. During the simultaneous action of vacuum and vibration, the concrete mixture & compresses more, i.e. air is more pinched 51 In addition, there is no layer-by-layer shaping of a stiff and particularly stiff concrete mix, i.e., obtaining the most dense concrete mix in thickness and, as a result, obtaining the most durable, waterproof, frost-resistant and durable It is not possible to load concrete with concrete in reinforced concrete without removing the top cover of the chamber with a stamp, which ultimately leads to poor quality of molding and sands. The purpose of the invention is to improve the quality of molding products. The goal is comprehended by the fact that a device for molding mixes from concrete mixes, containing an installation on which a frame is installed (a power stamp mounted on a vibrating rod is vacuum. The chamber, in the upper part of which there is a stamp with its vertical shifting, is fitted with an installed above the lid there is an airtight bunker, the air outlet of which is connected with a pipe by means of a punch, the shape of which is nasatsku with inclined slots on its inner surface, and the punch is made in the vice of two located over another perforated discs, the upper of which is rigidly connected to the lower end of the tube, with the upper and lower pivotable in a horizontal plane and has, on ne riferiynoy portions fingers, the free ends of which are arranged in the inclined nozzle slots ....

FIG. 1 shows a device, cross section, at 4ig. 2 - a form, a stamp and a cover with the bunker, a cross-section, on flg. 3 - device stamp, on 4ig. 4 - cut AA on -fkg. 3

The device for forming concrete mixes consists of a vibrating table 1, on which form 2 is installed, a vacuum chamber 3 with a movable cover 4, an upper perforated disk 5. A tire 6 with a rubber chamber 7 is supported on the ledge 8 of the wall of the vacuum chamber 3 and its inner rim 9 - on the metal ring 10, which together constitute the mechanism for the vertical movement of the movable cover 4. By means of fitting II, a vacuum chamber 3 is connected to a vacuum pump (not shown), and using a fitting -12 rubber chamber 7 is connected to a compressor ( not shown). The nozzle 13 is fitted with a shape 2. A metal colp 10 is attached to the wall 14 of the lid 4. A disk 15 with round apertures of the same diameter coinciding with the similar apertures of the upper disk 5, along the edges with fingers 16, which enter the beveled grooves 17 on the inner surface nozzles 13. The hopper 18 is hermetically sealed with the lid 19 by means of pe. A 2O gasket in locks 21. A coaxial pipe 22 is attached to the movable cover 4 and is the lower (in the front) part of the IS hopper. It ends with a tightly fixed upper perforated disk 5. With the help of studs with heads 23, through spherical slits 24 dikes 15 are connected to disk 5 and when moving downwards. sharpened at a certain angle with respect to the goat 5. At the same time, the apertures overlap, and both disks perform the role of a stamp driven by a pneumatic actuator of its vertical displacement. Round holes 25 in the top 5 and bottom 15 disks of the same diameter

and in the initial (upper) position coincide .X

The device works as follows.

A stiff or particularly stiff mixture is loaded in 0unker 18 and & its lower part 22. After sealing the chamber, the mixture is evacuated in the bunker 18 E of its lower part 22. In the process of charging through the vibrating table 1, the concrete mixture spills through the openings of the upper 5 and lower 15 {Schst. during the process of moving from the bunker to

form 2 through nozzle 13 optional

is degassed, freed from the pinched nogo, adsorbed on the surfaces of solid particles and dissolved in water;

As the stamp consisting of the top 5 and bottom 15 discs is lowered, the rotation of the disc 15 rotates, in which way the holes are blocked, and the feed of the mixture to the mold 2 is stopped. Further vertical lowering of the stamp in the form ensures the formation of a layer of concrete mix by simultaneous action on a degassed mixture of vibration and a load (stamp).

When the device is moved vertically upward, the lower disk 15 is set to its former position. The holes of the upper disk 5 and the lower disk 15 coincide, the mixture from the lower part of the hopper 22 under the action of vibration transmitted from I again enters for 2 and the process of forming the next layer is repeated.

Amplification deaeration and layer-by-layer molding allows to increase the density of the formation of hard and especially hard mixes, which, in turn, increases the resistance, water resistance, frost resistance and, as a result, the durability of concrete.

Claims (1)

Invention Formula A device for molding articles of concrete mixes according to ed. St. M | 3В5255 FROM And so that, in order to improve the quality of molding products, the device is equipped with an airtight hopper located above the lid, the outlet of which is connected to the dies using a pipe, and the FSHMA has an attachment with inclined grooves on its inner surface, made in the vice oyuh located with a rod of perforated squeaks, the upper one of which is rigidly connected with the end of the pipe, and the lower one is connected with the upper one with the possibility of rotation in the horizontal plane and has fingers on the primary part, which are located at the inclined 1st end of the nozzle. . Sources of information taken into account during examination I. Author's certificate of the USSR No. 365255, fKib В «8 В 1 / 1О, 1067 jt-chototype). 192L Phil.1 2 .one 24 / f Phme.