RU214663U1 - INSTALLING THE POWDER BAG - Google Patents

Abstract

The utility model relates to the production of pyroxylin and spherical powders and can be used when mixing any other bulk materials. The gunpowder bag installation has an upper and lower part connected by five vertical racks-columns, including an upper receiving funnel and a distributing cone and a lower receiving funnel and a distributing cone. Between the upper and lower parts there are twelve receiving hoppers containing a batch of gunpowder 5000-10000 kg, 500-800 kg each, with throttle valves controlled by hydraulic cylinders. In the upper part of one of the vertical rack-columns above the upper receiving funnel, there is a cyclone-precipitator of pneumatic transport and a transporting device. The conveying device consists of an intermediate conical funnel, a fabric sleeve and a conical tube with four spiral blades inside to swirl the bulk material flow when it falls onto a conical disk mounted on a threaded rod of the upper distributing cone. The upper receiving funnel has six fixed inclined blades with an inclination angle of 60° to the generatrix of the cone. The lower receiving funnel also has fixed inclined blades. The conical chipper is fixed on the lower cone-distributor, which has two rows of six pieces of fixed inclined blades, made with the possibility of directing gunpowder into twelve zinc cans standing on hand trucks. EFFECT: reduction of the duration of the process of bags of gunpowder is provided. 5 ill.

Description

The utility model relates to the production of pyroxylin and spherical powders and can be used with a bag (mixing) of any other bulk materials.

A similar issue was developed by the author in patent No. 2701835, where the UMP-1, UMP-2 and UMP-3 installations were developed. The first two are two-stage, three-stage and UMP-3 single-stage, as a "pilot" installation, on which it was necessary to determine the number of cascades or the number of repeated passes through the installation in order to obtain a high-quality mixing of a batch of bulk material (gunpowder) through the installation.

To achieve this goal, the UMP-3 installation had an upper receiving funnel with a vertical valve and six pneumatic transport units for returning powder to it from below.

Pneumoconveyors had folding, rotary trays.

The working part consisted of two coaxial pairs of receiving funnels and cones-distributors in the interval between them there were twelve tanks with throttle valves controlled by the operator using hydraulic cylinders.

The loading of the upper receiving funnel was carried out using a skip conveyor.

Inclined blades (6 pieces each) were installed on the working surfaces of the receiving funnels and distribution cones to increase the sieving angle of the bulk material and create a circular flow of powder when pouring onto their surfaces.

The capacity of the upper hopper was 5000 kg to 1000 kg, and the hoppers from 416.66 kg to 833.33 kg. At present, three-fold mixing is adopted in production and the achievement of the greatest possible separation of the total mass of bulk material.

To calculate the separation number of 5000 kg on the UMP-3 unit, all the digits of the section are used;

number of tanks - 12,

the number of fixed blades in the receiving funnels and distribution cones - 6 each:

12⋅6⋅6⋅12⋅6⋅6⋅12=2239488 divisions.

Nepromes for a batch of 5000 kg will be:

5000000 gr: 2239488=2.23 gr. nonpromes

For 10000000 gr: 2239488=4.66 gr. nonpromes

In the UMP-4 unit, most of the components of the UMP-3 unit were used, the working drawings for the UMP-4 were developed, however, there are changes: there is no upper intake funnel with a vertical valve, which reduces the height by almost 1000 mm, 6 pneumatic transport devices were removed due to a failure at re-mixing.

The second row of inclined fixed blades is installed on the lower cone-distributor.

Rice. 1. A fragment of the upper part of the UMP-4 installation is shown, where 1 is the upper receiving funnel; 2 - upper housing-distributor; 5 - cyclone precipitator; 6 - intermediate funnel; 7 - cloth sleeve; 8 - tube; 9 - conical disk; 10 - threaded rod; 11 - branch; 12 - bunker; 17 - racks.

Rice. 2. The lower part of the UMP-4 installation is shown, where 3 is the lower receiving funnel; 4 - lower cone-distributor; 12 - bunker; 13 - hopper throttle valve; 14 - conical chipper; 15 - lower fixed blades; 16 - zinc on a trolley (container); 17 - stand; 10 - threaded rod.

On fig. 3 shows two views of the lower distributor cones (4), with two rows of fixed inclined blades (15) and (15a).

On fig. 4 shows a transport device, consisting of a cyclone-precipitator (5), a fabric sleeve (7), a tube (8)

On fig. 5 is a section A-A.

Detailed description of the operation of the UMP-4 unit.

Loading is carried out using pneumatic transport. On fig. 1 shows the lower end of the cyclone precipitator (5), from which the powder enters the transport device, consisting of an intermediate funnel (6), a fabric sleeve (7), a tube (8) and a conical disk (9) on a threaded rod (10). Rice. one.

A swirling jet of gunpowder comes out of the cyclone-precipitator, according to the author, ≈0.5 m/s, i.e. 180°:60°=3.

At the lower end of the tube (8) there are four spiral blades inside, which twist the powder flow 4 times. Another 4.

The inclined paddles are located at the bottom of the intake funnel (1) on the spreading cone (2). There are 6 inclined blades on each, so the flow will be swirled another 6⋅6=36 times.

The conical disk (9) has 6 helical blades, swirling the flow another 6 times.

Then it enters the bunker (12) with the help of outlets (pockets) (11), already partially divided:

3⋅4⋅6⋅6⋅6⋅12=31104 times, this already partially mixed gunpowder is in 12 bins (12).

The emptying of the bunkers by opening the throttle valves (13) with the help of hydraulic cylinders by the operator is carried out sequentially in pairs for a batch of 5000 kg and alternately for a batch of 10000 kg due to zinc containers (tare).

On fig. 2 shows the lower part of the UMP-4 installation, where the hopper (12) is emptied into the lower intake funnel (3), which has inclined blades in the lower part, as well as a conical bump stop (14) on a threaded rod (10), which serves to reject 1/5 the flow of powder back, falling on it from any side, which reduces the slides of bulk material, and the second row of similar fixed blades (15), which increase the twist by another 6 times.

Then the gunpowder enters the zinc cans (16) standing on handcarts.

Five columns (17) connect the upper and lower parts of the UMP-4 unit.

On fig. 3 shows the fixed vanes (15) on the lower distributor cone (4).

On fig. 4 shows a close-up view of the transport device with parts (5, 6, 7 and 8).

On fig. 5 incision along A-A with crooked shoulder blades (43 pcs.) You can make six of them.

A large batch of gunpowder 5000 kg is divided into 75 kg in zinc cans (tare) 5000:75=66.6 cans.

UMP-4 has 12 zinc cans standing on handcarts, which, after filling them with gunpowder, must be removed and replaced with empty ones, so this operation must be performed: 66.6:12 = 6.78 times ≈ 7 times, each replacement requires ≈0.5 hours; ≈7⋅0.5=3.5 hours.

Pneumatic transport delivers 120 kg/hour of gunpowder, to fill 12 zinc cans 75⋅12=900 kg and 900:120=7.5 hours are needed.

Total: (7.5⋅7)+(3.5⋅6)=52.5+21=73.5 hours; 73.5 hours: 6 hours=12 shifts=3 days

Similarly for 10,000 kg, in cans of 85 kg of gunpowder:

85⋅12=1020 kg and 10000:1020=9.8≈10 times

0.5 hour⋅10=5 hour 10000:85=1 17 hour.

Total: 117+5=122 hours: 6=20.3 shifts≈5 days

However, for large brands of powders, another pneumatic transport is required, where the diameter of the pipes must be at least 75 ... 80 mm, and not 50 ... 60 mm, as for small brands and spheres.

The diameter of the cyclone-precipitator is not less than 600 mm. In this case, the performance is 2 ... 2.5 times.

120⋅2.5=300 kg/hour, and this will significantly reduce the duration of the process of large-grade powder bags.

Claims (1)

Gunpowder bag installation having upper and lower parts connected by five vertical rack-columns, including upper receiving funnel and distributing cone and lower receiving funnel and distributing cone, between which there are twelve receiving hoppers containing a batch of gunpowder 5000-10000 kg, 500 -800 kg each, with throttle valves controlled by hydraulic cylinders, and in the upper part of one of the vertical rack-columns above the upper receiving funnel there is a pneumatic transport cyclone-precipitator and a transporting device consisting of an intermediate conical funnel, a fabric sleeve and a conical tube, having four spiral blades inside for swirling the flow of bulk material when it falls onto a conical disk mounted on a threaded rod of the upper cone-distributor, while the upper receiving funnel has six fixed inclined blades with an angle of inclination of 60 ° to the generatrix of the cone, the lower receiving funnel also has motionless on inclined blades, the conical chipper is fixed on the lower cone-distributor, which has two rows of six pieces of fixed inclined blades, made with the possibility of directing gunpowder into twelve zinc cans standing on hand trucks.

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