SU1373899A1 - Centrifugal separating pump - Google Patents

Description

(21) 4145279 / 25-06

(22) O2. 07.86

(46) 02.15.88. Bul № 6

(71) Komsomolsk-on-Amur Polytechnic Institute

(72) GD. Shekun and S.A. Skomorovsky (53) 621.671 (088.8)

(56) USSR Copyright Certificate No. 943440, cl. F 04 D 29/70, 1978.

USSR Author's Certificate No. 1184974, cl. F 04 D 7/04, 1983.

(54) CENTRIFUGAL PUMP SEPARATOR

(57) Invention m. used to separate solid particles of rock during the pumping of water accumulation in the openings of mines, drainage of construction pits, during washing of wells during drilling. The purpose of the invention is to improve the service life of the separator pump by reducing the abrasive wear of its elements. In the input

(L

ig.

A passive axial swirler 5 is fixed to the nozzle (VP) 2. Between the impeller (RK) 4 for pumping the flow of the clarified medium and the swirl 5 there is an annular diffuser chamber 6 for diverting the flow of heavy inclusions. The annular compartment of the flow 7 is made in the form of a fixed protrusion fixed on the housing 1 in front of the RK 4. The active tangential swirler is made in the form of an annular collector (K) 8. covering VP 2, K 8 is connected to a source of high pressure medium and communicated with cavity VP 2 by means of at least one nozzle oriented in the direction of the turn

one

The invention relates to pumping and can be used, for example, for separating solid rock particles when pumping water accumulations in the openings of mines, draining construction pits, and washing wells during the drilling process.

The purpose of the invention is to increase the service life by reducing the abrasive wear of pump elements.

FIG. 1 shows a centrifugal separator pump, a longitudinal section; in fig. 2 is a section A-A in FIG. one.

The centrifugal separator pump includes a housing 1 with inlet and outlet nozzles 2.3, an impeller 4 for pumping a stream of clarified medium, a passive axial swirl 5 fixed in the inlet nozzle 2, an annular diffuser 6 for diverting a stream of heavy inclusions, located between the axis - vm swirl 5 and the impeller 4, and the ring cutter 7 threads. The pump is equipped with an active tangential swirler, made in the form of an annular manifold 8, covering the inlet 2, connected to a source of high pressure medium and communicated through at least one nozzle 9, oriented in the direction of rotation

Scheni RK 4. K 8 m. connected to the outlet nozzle 3. In VP 2, a developed field of centrifugal forces is created, and heavy inclusions are thrown to the periphery, and the clarified medium enters the RK 4 Energy channels, supplied as a result of the active swirler, compensates for the energy loss when the medium is sucked through the swirler 5 and increases the flow parameters at the entrance to the chamber 6. Twisting of the clarified medium at the entrance to the RK 4 allows improving cavitation and energy characteristics, as well as rejecting wear seals on the sleeve surfaces th pump. 1 h, para. f-ly, 2 silt

0

five

0

five

0

impeller 4, with the cavity of the inlet pipe 2.

The cutter 7 threads made in the form of a fixed protrusion mounted on the housing 1 in front of the impeller 4.

The collector 8 is connected to the outlet nozzle 3 (as a source of high pressure medium) through a pipeline 10.

Centrifugal pump separator operates as follows.

As a result of the vacuum created by the impeller 4 of the pump, the medium with abrasive inclusions receives a primary twist, pass through the passive axial swirler 5. To increase the total energy and degree of twist of the medium with heavy inclusions through conduit 10 through the collector 8 and profiled nozzles 9 the cavity of the inlet 2 is supplied to a high-pressure medium. Under the action of the primary passive swirler 5 and the secondary active swirler with nozzles, the flow of the medium acquires an intensive translational-rotational motion in the direction of the impeller 4 of the pump. In the inlet nozzle 2, due to the swirling organized in this manner, a developed field of centrifugal forces is created, and heavy abrasive inclusions are thrown to the periphery. The clarified medium along the axis of the inlet nozzle 2 enters the channels of the impeller A. Target abrasive inclusions and part of the liquid medium from the peripheral region of the nozzle 2 are separated from the main flow by a fixed cutter 7 and directed into an annular diffuser chamber 6 with a spiral outlet or accumulator In the diffuser chamber 6, the kinetic energy of the flow is converted into the potential energy of pushing heavy inclusions outside the casing 1 of a centrifugal separator pump. The additional energy supplied as a result of the operation of the secondary active swirler compensates for the loss of energy when the medium is sucked through the passive swirler 5 and increases the flow parameters at the inlet to the diffuser chamber 6. Twisting the brightened medium at the entrance to the wheel 4 also improves cavitation and energy characteristics, as well as reject the wear seals of the sleeve surfaces of the centrifugal pump.

Claims (2)

Invention Formula one . A centrifugal separator pump, comprising a housing with inlet and outlet nozzles, an impeller for pumping a stream of clarified medium, a passive axial swirler fixed in the inlet nozzle, an annular diffuser chamber for diverting heavy inclusions flow between the axial swirler and the impeller wheel, and an annular flow cut-off device, which is used to ensure that, in order to increase the working life by reducing the abrasive wear of pump elements, the latter is equipped with an active tangential swirler, complete in the form of an annular manifold, covering the inlet, connected to a source of high pressure medium and communicated by means of at least one nozzle oriented in the direction of rotation the impeller, with the cavity of the inlet pipe, and the cut-off flow is made in the form of a fixed protrusion mounted on the housing in front of the impeller. 2. Pump separator according to claim 1, characterized in that the collector is connected to the outlet nozzle. Fp .2