RU168286U1 - MIXING AND CHARGING MACHINE FOR UNDERGROUND MINING - Google Patents

Abstract

The utility model relates to the field of mining, in particular to the design of mixing and charging machines used for mechanized preparation of emulsion explosives and loading holes and boreholes during underground mining. The charger is removable with the possibility of hard mounting on a wheel frame using a platform and is equipped with protection of the cab of the wheel frame and reinforcing elements. The container for the emulsion is made of Eurocube. For dosing, pumping and mixing the components using a piston pump installed in a protective cabinet, controlled by a control cabinet. Using a ring injection system, a gas generating additive is introduced into the charging hose, and an emulsion mixer is installed at the end of the charging hose.

Description

The utility model relates to the field of mining, in particular to the design of mixing and charging machines used for the mechanized preparation of emulsion explosives and loading holes and boreholes during underground mining.

A well-known universal machine for charging boreholes (patent UA 14492U, 2006), which includes a charging complex mounted on a transport base, which includes bunkers for solid and liquid components with loading and unloading windows, a screw system for feeding and mixing components BB, contains interconnected horizontal auger for supplying solid components and a rotary transport and delivery auger with a tubular groove and technological pipes for supplying a mixture of explosive components in the receiving hopper, the unloading window of which is connected to a screw mixer-blower, the output of which is connected to the charging hose of the hose reel, a roller and a rotary composite boom, metering pumps, a flushing system, electrical equipment and program control. The horizontal auger is located above the rotary transport-delivery auger, which is mounted relative to it at an angle. The screws are interconnected with the possibility of rotation and fixing their position one relative to the other.

The disadvantage of this device is the complexity and low efficiency when charging ascending wells, due to design features.

Known universal mixing and charging machine (patent RU No. 142788, publ. 07/10/2014), which includes a set of equipment mounted on a motor vehicle base and containing two containers, one of which is universal at the bottom with a device for the release of the emulsion matrix and a locking device for the release of ammonium nitrate, and at the top with loading hatches, while the second tank is also universal with a device for the release of the emulsion matrix and a locking device for the release of ammonium nitrate at the bottom and at least one loading door at the top, and each of the loading hatches of both containers is covered by a filter bag consisting of a filter screen and an emulsion located under the grid of a wave damper made in the form of a ribbed grid with parallel plates. Locking devices for the release of the emulsion matrix of both containers are made in the form of removable hatches. Both tanks are made in the form of compartments of a single hopper, separated by a hermetic partition. In its lower part, each tank has a safety exit hatch.

The disadvantage of this device is the complexity and low efficiency when charging ascending wells, due to design features.

Known charging machine (patent RU No. 2304756, publ. 08/20/2007). The machine is characterized in that the hopper of the charging machine is made in the form of a removable container installed inside the car body and fastened to its floor by four screw connectors, divided by longitudinal and transverse inclined partitions at an angle of 45 ° into 4 or 6 sections for loading explosives and auxiliary a compartment for installing a tank with process fluid, on the side walls of the sections in the places where the partitions are connected, discharge hatches with slide gates, operating from the vehicle’s pneumatic system, are made, to which are mounted mounted volumetric dispensers with slide gate valves, the container in the upper part is equipped with loading hatches with lockable covers and fittings for fastening the slings of load-lifting mechanisms. When using a charging machine for the manufacture of igdanite-type explosives, the machine is additionally equipped with a liquid component supply system consisting of a tank, two dispensers, a liquid component atomizer, connected by a piping system that supplies the liquid component to the mounted dispenser of the container section.

The disadvantage of this device is the large dimensions that do not allow its use in a limited space of underground mine workings.

Known block capacities of a mixing-charging machine (RF patent for utility model No. 49975, publ. 10.12.2005). A container block of a mixing-charging machine, including containers for a gas-generating additive, for process water, for petroleum products, a hopper for ammonium nitrate, an emulsion container containing a housing, in the upper part of which there is a loading hatch with a shutter cover and a safety valve, and inside the container the lower part is equipped with an unloading screw, according to the invention, the locking cover of the loading hatch of the emulsion tank is made in the form of a ring mounted with the possibility of pressing along the peripheral erhnosti hatch, and a membrane clamped on the annulus with overlapping of its central axial hole, wherein the membrane is adapted to its destruction under the influence of the maximum permissible excess pressure inside the vapor emulsion emulsion tank.

The disadvantage of this device is the large overall dimensions and the inability to obtain a charge of emulsion explosive with the properties necessary for retention in the well.

A device for preparing and loading wells with a mixed emulsion explosive is known (RF patent No. 2312301, publ. 10.12.2007, bull. No. 34). A device for preparing and loading wells with a mixed emulsion explosive includes a hopper with a screw feeder for ammonium nitrate, an emulsion tank, containers for a gas-generating additive, water and oil product, as well as metering pumps for supplying an emulsion, gas-generating additive, water and oil product. The device is equipped with a spatula mixer, the shaft of which at its input section is coaxially rigidly connected to the output section of the shaft of the ammonium nitrate screw feeder. The outlet portion of the blade mixer is in communication with the inlet portion of the component mixer, and an oil supply nozzle is located at the inlet portion of the blade mixer. In addition, the device has a second channel for supplying the mixture of the emulsion with the gas-generating additive, the output of which is located at the outlet of the device, the inputs of both channels being connected to the output of the emulsion mixer with the gas-generating additive through the distribution device.

A disadvantage of the known device is the large overall dimensions, due to the design features of the device, as well as the impossibility of charging the ascending holes and wells.

Known universal mixing and charging machine, (RF patent No. 121174, publ. 20.10.2012), which includes a set of equipment mounted on a trucking base and containing two bins, one of which is designed for ammonium nitrate and is made with top loading hatches, and the second - universal - for the emulsion matrix and ammonium nitrate, made at the bottom with a rotary shutter to release the emulsion matrix and a locking device for the release of ammonium nitrate, and at the top - with loading hatches, three are connected in series augers - a horizontal bottom screw, an inclined screw and a mixing-charging screw, a horizontal bottom screw connected to the output of the ammonium nitrate hopper and a universal hopper locking device, a mixing and charging screw is connected to the receiving hopper by an output, and connected to a rotary shutter of the universal hopper and tank with a gas-generating additive, the inclined screw is connected with a tank with diesel fuel, while the rotary shutter of the universal hopper is connected, a tank with a gas-generating additive and a tank with a diesel lnym fuel with screws through the corresponding pump, and the hopper outlet is connected via an output to the charging pump hose the hose reel. The input of the mixing-charging auger with the rotary shutter of the universal hopper and the container with a gas-generating additive is connected through a static mixer.

The disadvantage of this device is the low efficiency when charging upstream wells, due to design features, as well as increased labor intensity.

Underground charging installation for loading wells with emulsion explosive, adopted as a prototype (RF patent No. 141174, publ. 05.27.2014), manufactured during loading during underground mining, including a charger with a drum for the charging hose and a dispenser with a mixer, metering pumps and an automatic dispensing system, while the charger and dispenser are made on different disconnected frames and are functionally interconnected by two hoses - a hose for emulsion supply and a hose for gas supply additives (GGD) for it, while the pneumatic system, an emulsion pump with pressure and suction pipelines, an automatic component dosing system, a water supply system and a GGD supply system with a supply tank are mounted on the dispenser frame, and the charger is located on the wheel frame and contains a pneumatic hose drum and a charging hose, an emulsion and GGD mixer, as well as a charger pneumatic system and a ring injection system of water into the charging hose.

The disadvantage of this utility model is the complexity of the design and the high cost of the wheel frame, unsuitable for movement along underground workings.

The technical result of the utility model is to simplify the design and reduce the cost of the wheel frame.

The technical result is achieved in that in a mixing and charging machine for underground mining, which includes a charger with a charging hose, pumps functionally connected with hoses for supplying emulsion, water and a gas-generating additive, a suction pipe, a metering system for components, water tanks and a gas-generating additive, the charger is placed on a wheel frame and contains a mixer of the emulsion and gas generating additive, as well as the pneumatic system of the charger and the ring injection system in the charging hose, according to the utility model, the charge The IR is removable with the possibility of hard mounting on the wheel frame using the platform and is equipped with a protection for the wheel frame cabin and reinforcing elements, the emulsion tank is made of Eurocube, and a piston pump installed in a protective cabinet, controlled by control cabinet, and with the help of a ring injection system, a gas-generating additive is introduced into the charging hose, and an emulsion mixer is installed at the end of the charging hose.

The technical result is also achieved by the fact that the Silant cargo chassis is used as a wheel frame.

The technical result is also achieved by the fact that the wheel frame has a crane.

The mixing and charging machine for underground mining is illustrated by drawings, where in FIG. 1 shows a device, isometric view, in FIG. 2 shows a device, a top view, in FIG. 3 shows a device, rear view, in FIG. 4 shows a device, side view, in FIG. 5 shows a schematic diagram of the installation of the device on a wheel frame, for example, the Silant chassis, side view, in FIG. 6 shows a schematic diagram of the installation of the device on a wheel frame, for example, the Silant chassis, a top view, in FIG. 7 shows a schematic diagram of the installation of the device on a wheel frame, for example, the Silant chassis, front view, in FIG. 8 shows a schematic diagram of the functional relationships of the device, where:

1 - platform;

2 - protection for the cab of the wheel frame;

3 - a container for storing the emulsion, for example, IBC container with a capacity of 1000 l;

4 - control cabinet;

5 - suction pipe connecting the pump of components 10 with the container 3 for emulsion;

6 - a tank for water, for example, with a capacity of 70 l;

7 - tank for gas-generating additives, for example, with a capacity of 70 l;

8 - frame for the container 3 for storing the emulsion, mounted on the wheel frame 2;

9 - a protective cabinet of the component pump;

10 - pump components - emulsion, gas-generating additives and water, installed in a protective cabinet 9;

11 - wheel frame;

12 - crane;

13 - shutter, for example a three-way valve;

14 - a charging hose;

15 - a drum for a charging hose 14;

16 - hoses, functionally linking the container 3 for storing the emulsion, a water tank 6, a tank 7 for a gas-generating additive, a pump of components 10 of the emulsion, gas-generating additive and water, and also a charging hose 14;

17 is an emulsion mixer mounted on the end of a charging hose, for example, Sulzer.

Emulsion explosives are widely used throughout the world. The use of emulsion explosives can radically improve the safety of transportation and loading of explosives, since non-explosive components are transported and charged and the final "explosive product" is formed only in charged wells. Currently, the technology of using emulsion explosives in the underground space is developing rapidly. The main disadvantage of the solutions already available on the market is the large dimensions of devices for transporting explosives and their components, which is unacceptable in a confined space, such as underground.

The mixing and charging machine for underground mining is designed for temporary storage and preparation of emulsion explosives with the possibility of manually loading ascending holes and boreholes.

The underground mixing and charging machine contains the following basic elements. The charger includes a platform 1 with protection 2 for the cab of the wheel frame and frame 8 for the container 3 for storing the emulsion. The platform 1 is made with the possibility of hard fastening on the wheel frame 11. On the platform 1, a container 3 for storing the emulsion, for example, Eurocube, is also fixedly attached to it. It is an IBC container with a capacity of 1000 l. Eurocube (IBC - from the English Intermediate Vulk Container, cubic capacity, plastic container, cube barrel, plastic cube) belongs to the category of medium tonnage containers. Rigid outer packaging (steel crate, pallet made of wood, metal or plastic) in which a plastic container is placed (“flask”, “bottle”). Form: internal capacity - cube. Material: high density low pressure polyethylene (PE 100). Wall thickness: 1.5-2.0 mm (depending on specification). Color: white (natural color of polyethylene). On the upper part of the plastic container there is a filler neck on which a polyethylene cover is installed, which can be equipped with a ventilation valve. A drain valve with a plunger or ball valve type and rubber seal is installed in the lower part of the tank. The standard size of the taps is 2 inches; for viscous pasty products, Eurocubes with 3-inch taps are made. The drain valve can be welded or screwed; attached to the bottom of the bottle and does not go beyond the dimensions of the cube. Metal lathing: hollow tubes made of galvanized steel. The upper part of the crate is attached to the main part by a screw connection and can be detached to replace the plastic bottle. IBC container 3 is equipped with a wooden, steel or plastic pallet with screws. IBC containers can be heated to transport liquids subject to temperature extremes. Also, on the platform 1, a control cabinet 4 is installed, functionally connected by hoses 16 to the component pump 10, intended for pumping the emulsion, gas-generating additive and water, installed in the protective cabinet 9. The suction pipe 5 connects the component pump 10 to the emulsion container 3. On the platform 1, outside the frame 8 for the container, a water tank 6, for example, with a capacity of 70 l, and a tank 7 for a gas generating additive, for example, with a capacity of 70 l, are rigidly fixed. The capacity of all tanks and containers is taken based on the required proportions of the components of the explosive. Wheel frame 11 can be made on the basis of the Silant chassis of a Russian manufacturer, which reduces the cost of buying a chassis. Wheel frame 11 Silant is a two-axle four-wheel drive multifunctional wheeled vehicle with the possibility of mounting various types of technological equipment. The wheel frame 11 has a frame structure, a dependent spring suspension of all wheels, a two-door three-seater cabin frame-panel type. Also, a crane 12, for example, Palfinger PK 6500, can be installed on the wheel frame 11. A container 3 for storing the emulsion, a water tank 6, a tank 7 for the gas-generating additive, a pump of the components 10 of the emulsion, gas-generating additive and water, installed in a protective cabinet 9 , as well as the charging hose 14 are functionally interconnected by hoses 16. To adjust and direct the flows, shutters 13 are used.

Mixing and charging machine for underground mining works as follows. The device can use the high-pressure air provided in the underground by the customer’s service, necessary for the operation of a pneumatic station (not shown conditionally), which in turn drives a piston pump of components 10.

Before starting the device, it is necessary to check the following indicators and systems:

- the level of the emulsion matrix in the container 3;

- water level in the tank 6;

- the level of gas-generating additives in the tank 7;

- all containers and tanks must be covered with lids;

- there should be no leaks on the pump of components 10;

- there should be no visible leaks in all areas of the hydraulic system of the device;

- shutters 13 must be closed;

- All emergency shutdown systems must be in good condition.

Wheel frame 11 with the charger installed on its own moves to the place of blasting. In the face, the wheel frame 11 is installed and ready for operation, the charging hose 14 is unwound from the drum (not shown conditionally), the emulsion mixer 17 is pre-screwed to its end 17. The charger is connected to the pneumatic energy source on the wheel frame 11 or to the mine pneumatic network. Set in the control cabinet 4 the required recipe and the proportions of the supply of components by the pump 10.

The emulsion matrix located in the container 3 is fed into the piston pump of the components 10 through the suction pipe 5. The pump of the components 10 is a pressure piston pump that produces a pulsed flow. The component pump 10 is driven by a pneumatic station (not shown conditionally). The pump of components 10 delivers the emulsion and the gas-generating additive through an ammonium nitrate-based injector through hoses 16 - functional connections, for example, to the charging hose 14. A gas-generating additive is injected into the charging hose 14 through an injector (not shown conditionally). The supply of the gas-generating additive is controlled by a shutter 13, for example, a three-way valve from the piston pump 10. A gas-generating additive is introduced coaxially to the emulsion matrix flow, whereby the gas-generating additive forms a film along the entire inner surface of the supply line and charging hose 14, i.e. acts as a lubricant to facilitate pumping of the product as an emulsion explosive. In the absence of a gas generating additive in the charging hose 14, pumping will slow down and eventually stop. The supply of the charging hose 14 to the bottom is carried out manually by reeling from the drum (not shown conditionally). On the supply side of the pump 10, a filter and a pressure gauge may be integrated. The filter prevents contaminants such as stones and crystals from entering the unit. A static mixer 17 is installed at the end of the charging hose, which further mixes the gas-generating additive and the emulsion to further ensure that they are mixed properly and thereby sensitize the product. The speed of the pump of components 10 is regulated, installed and checked using a control cabinet 4 connected to the pump. The performance of the pump 10 is displayed on the display panel in the control cabinet 4. After charging the required amount of emulsion explosive into the well while removing the charging hose 14, it is introduced into the next well, the required amount of product is set on the control cabinet and further charging is performed. The washing of the hoses 16, the charging hose 14, the pump of the components 10 and the mixer of the emulsion 17 occurs due to the water supply in the tank 6 installed on the charger by switching the shutters 13 to the washing position. After loading, the wheel frame 11, for example, on the basis of the Silant chassis with an attached module, moves under its own power to a safe zone or to another tunnel face.

The use of a mixing and charging machine for underground mining provides the following advantages:

- simplification of the design;

- reducing the cost of buying a wheel frame;

- minimization of the overall dimensions of the device due to the compact design layout.

Claims (3)

1. A mixing and charging machine for underground mining, including a charger with a charging hose, pumps functionally connected with hoses for supplying emulsion, water and a gas-generating additive, a suction pipe, a dosing system for components, water tanks and a gas-generating additive, the charger is placed on a wheeled frame and contains a mixer emulsion and gas-generating additives, as well as the pneumatic system of the charger and the ring injection system in the charging hose, characterized in that the charger is removable with the possibility of hard cr The heater is mounted on a wheel frame using a platform and is equipped with a protection for the wheel frame cabin and reinforcing elements, the emulsion tank is made of Eurocube, and a piston pump installed in a protective cabinet, controlled by a control cabinet, is used for dosing, pumping and mixing the components. ring injection systems introduce a gas generating additive into the charging hose, and an emulsion mixer is installed at the end of the charging hose. 2. The mixing and charging machine according to claim 1, characterized in that the Silant cargo chassis is used as a wheel frame. 3. The mixing and charging machine according to claim 1, characterized in that the wheel frame has a crane.

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