RU20130U1 - SHAFT JUMPER INSTALLATION - Google Patents

Description

Installation for the construction of mine jumpers.

The utility model relates to mining, namely to safety measures, and is intended for erecting explosive and insulating lintels from gypsum mortar to isolate underground fires in coal mines, filling domes and other voids behind the mine workings.

A known unit for the mechanization of the construction of mines without cutting explosion-proof and insulating structures, as well as filling the voids of the containment space, containing a mixing and delivery unit with a drive for preparing and pumping the mortar mixture, a pressure hose with a flow switch, sleeves for water supply and a control panel (Gladkov Yu .A. Extinguishing and extinguishing means of underground fires. Catalog, Central Research Institute of Coal and Coal, M., 1979, pp. 27-28).

A disadvantage of the known unit is the inability to prepare foamed mixtures, which limits the scope.

Known installation Monolith-2 for the mechanized construction of mine explosion-proof jumpers, containing a discharge unit with a drive and a discharge pipe, a receiving hopper with a pipe for supplying water, a mixing chamber, a sleeve for pumping mortar with a flow switch, as well as a removable dispenser for foaming agent installed coaxially with a pipe for water supply (Recommendations on the localization of fires with gypsum binders. VNIIGD, Donetsk, 1982, pp. 43-45). The principle of operation of the known installation is that the source material (gypsum)

E 21 F 5/00

load through a grid with a knife into the receiving hopper, from where it enters the mixing chamber, where it is mixed with water or water with the addition of a foaming agent. The prepared mixture containing the components in a predetermined ratio, the discharge unit is fed into the pressure hose and then for the lintel formwork. A dispenser with a container for a foaming agent is connected to a pipe for supplying water during the preparation of foam gypsum. It is assumed that in order to obtain a low-level foam, the necessary amount of air will enter the mixing chamber through the receiving hopper as a result of suction. In this regard, it should be noted that the operation rules of the installation limit the fluctuation of the gypsum level in the receiving hopper to the level of the mesh in it, which significantly limits the air leaks through the hopper until they are eliminated. In addition, visual monitoring of air intake under these conditions is not effective. Due to the uneven flow of air, the resulting foamed solutions have an inhomogeneous structure, exfoliate and have low strength.

An installation for the construction of mine jumpers is proposed, comprising a receiving hopper, a mixing chamber with a water supply pipe, a discharge unit with a drive and a discharge pipe, a sleeve for pumping the mortar mixture with a flow switch and a removable dispenser for foaming agent.

New in the design of the installation is that it is equipped with an additional removable insert with a check valve installed between the discharge pipe and the sleeve for pumping the mortar mixture and connected through a rheometer to a source of compressed air.

L & W / Ј $ ЈГ

For the preparation of conventional gypsum solutions, the installation is used without a dispenser for a foaming agent, an insert with a non-return valve, a rheometer and a source of compressed air, i.e. in a performance similar to the prototype.

When preparing foamed compositions, a foaming agent in a given volume is introduced together with water into the mixing chamber, and foaming occurs by supplying compressed air in a predetermined volume through an insert directly into the pressure hose into the prepared mixture. Such a design of the installation allows to improve the quality of foaming of the composition due to the controlled introduction of compressed air into the composition.

The essence of the utility model is illustrated by the drawing, which shows a General view of the installation for the construction of mine jumpers.

The installation contains a discharge unit 1, the basis of which is a 1V20 / 10 single-screw electric pump with a drive 2. A mixing chamber 3 is connected to the discharge unit, connected via a bend 4 to a receiving hopper 5. For supplying water to the mixing chamber, the installation has a water pipe 6, connected to the fire-irrigation pipe 7. When preparing the foam compositions in the line between the pipe 6 and the pipe 7, a dispenser 8 with a capacity of 9 for a foaming agent is installed, similar to the dispenser of the prototype. The injection unit has an injection pipe 10 to which a sleeve And is connected to pump the mortar mixture with a flow switch 12. When preparing foamed mixtures, an insert 13 with a check valve inside (not shown) is installed in the pressure line between the pipe 10 and the sleeve 11. The insert through a rheometer 14 with a valve 15 is connected to a source of compressed air 16,

for example with a compressed air pipe. On the receiving hopper 5 there is a removable rim 17 with the mesh 18 and the knife 19. In the inoperative position, the rim 17 is fixed on the receiving hopper with the screws 20 with the knife down. For ease of movement along the workings, the installation is mounted on the frame 21.

Below is a description of the operation of the installation for the construction of mine jumpers.

Before starting work, the rim 17 is mounted on the receiving hopper 5 with the knife 19 up, fixed with screws 20 and connecting the installation to the fire pipe 7. To prepare conventional gypsum mortars, water is supplied from the pipe through the pipe 6 to the installation, and several bags of gypsum are poured successively into the receiving hopper and then begin the normal supply of bags to the knife 19, maintaining the level of gypsum in the hopper near the mesh 18. The gypsum from the receiving hopper through the elbow 4 enters the mixing chamber 3, where it is mixed with water and processed The solution called using the pump of the discharge unit 1 is fed into the discharge pipe 10 and then into the sleeve I. During the movement of the mixture, further mixing of the components occurs. The first portions of the gypsum solution by means of the flow switch 12 are dumped onto the soil. By changing the amount of water supplied, the consistency of the solution is adjusted to the required norm, after which the flow of the solution is directed to the jumper formwork.

To obtain a foamed gypsum solution, a dispenser 8 for a foaming agent is installed between the nozzle 6 and the pipeline 7, and an insert 13c with a non-return valve is installed between the discharge nozzle 10 and the sleeve 11. Gypsum enters the mixing chamber 3 from the receiving hopper 5, and water passes from the pipeline 7 and

fae / sfuffft

Claims (1)

Installation for the construction of mine jumpers, containing a receiving hopper, a mixing chamber with a water supply pipe, a discharge unit with a drive and a discharge pipe, a sleeve for pumping mortar with a flow switch and a removable dispenser for foaming agent, characterized in that it is equipped with an additional removable insert with a reverse a valve installed between the discharge pipe and the sleeve for pumping the mortar mixture and connected through a rheometer to a source of compressed air.