SU1216453A1 - Hydraulic pump - Google Patents

Description

one

The invention relates to pump construction, namely, to designs of explosive type pumps for pumping abrasive slurry.

The purpose of the invention is to increase the pressure and pump performance when pumping concentrated suspensions of solid particles and to improve the filling of the spiral drainage with the pumped medium,

Figure 1 shows the principal structural diagram of the pump; figure 2 - section aa in figure 1.

The hydraulic pump contains a housing 1 with a spiral outlet 2, an outlet branch pipe 3, a central inlet branch 4 and an axisymmetric working chamber 5 located in it. The latter is made isolated from the spiral outlet 2 in the form of two closed elastic convex disks 6 and 7 in the housing 1 Channels 8 and 9 were equipped with check valves 10 and 11 installed in them for supplying 5 components of the combustible mixture to the working chamber. The chamber 5 is equipped with a spark plug 12, and the outlet nozzle 3 is equipped with a check valve 13. To improve the uniformity of pumping the suspension in the spiral outlet 2, a guide device with curved blades 145 can be installed, the distance between which increases along the length of the spiral outlet 2 in the direction to the outlet branch pipe 3. In order to improve the filling of the spiral outlet 2 with the pumped medium, the working chamber 5 and the outlet 2 in the upper points (with the pump in a vertical position) are equipped with valves 15 and 16 for gas discharge, the image propelling the combustion of the combustible mixture,

Hacdc works as follows.

The pumped over suspension under the action of its own weight (with a vertical pump) or their action of some pressure through the central inlet pipe 4 fills the cavity of the spiral outlet 2. Through the channels 8 and 9, the components of the combustible mixture (fuel and air ), After reaching a pressure in the chamber of about 656-038 MPa, the supply of the combustible mixture stops at 64532

By power, the spark plugs 12 ignite it. Explosive type mixtures burn, resulting in a sharp increase in chamber 5

5 pressure. The check valves 10 and 11 prevent the emission of gases resulting from the combustion of the mixture into channels 8 and 9.

Under high pressure

10, the resilient convex discs 6 and 7 expand 5 and the gases are ejected into the spiral outlet 2. The upper disc 6, pressed against the pump casing 1, blocks the supply pipe 15 of the tubes 4 and thereby eliminates the release of gases and slurry into it. The suspension contained in the spiral outlet 2 under the action of gases emitted from the chamber 5 is directed through

20 a check valve 13 under increased pressure into the outlet nozzle 3. A check valve 13 prevents the suspension from being discharged from the nozzle 3 into the spiral outlet 2 when it is filled from.

25 inlet pipe 4, Installation in the outlet 2 of the blade guide vane with a gradually increasing distance between the blades 14 towards the outlet pipe 3

Sg. allows to improve the uniformity of the suspension supply.

At the beginning of the spiral outlet 2, due to the greater thickness of the blades 14, the dissolution of the suspension is inhibited

,,. stronger than in the areas near the outlet nozzle 3; Therefore, when gases are ejected from chamber 5, portions of the suspension successively displace, the closer to nozzle 3, the

, portions of the suspension are displaced earlier.

After displacing the suspension and gas into the inlet 3 in chamber 5 and outlet 2, excess pressure j can be maintained, this degrades the collapsing disks 6 and 7 and filling the outlet 2 with a portion of the pumped suspension, with the aim of eliminating this to chamber 5 and outlet 2 valves 15 and 16 for gas release and pressure relief at the end of the injection cycle. After the gases are released, the process is repeated. The pump operates with a frequency of 0.5-2.0 Hz and provides high performance and pressure when pumping suspensions of the solid phase of high concentration.

SO

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Editor M.Vlanar

Compiled by V.Devisilov

Tehred 3.Paliy Proofreader G. Reshetnik

Order 980/42 Circulation 587 Subscription

VNISh State Committee of the USSR

for inventions and discoveries 1130.35, Moscow, Zh-35, Raushsk nab., 4/5

 I I I I 1 II. "" ". 1 I I I cc cc IIILVIv cc AI i 1

Branch PSh1 Patent, Uzhgorod, st. Project, 4

Claims (2)

1. HYDRAULIC PUMP containing a housing with a spiral outlet, an outlet pipe, a central inlet pipe and an axisymmetric working chamber located in it, characterized in that, in order to increase the pressure and productivity, the working chamber is made isolated from the spiral branch, in the form of two closed elastic convex disks, channels with check valves installed in them for supplying combustible mixture components to the working chamber are made in the casing, the chamber is equipped with a spark plug, and the outlet pipe is reverse th valve. 2. The pump according to claim 1, characterized in that, in order to improve the filling of the spiral outlet with a pumped medium, the working chamber and outlet are equipped with gas release valves.