SU13A1 - Pump - Google Patents

Description

The proposed pump is intended for pumping dirty liquids or pulp-like masses to a small height and for non-stop and without supervision work as a peat pump or in general for pumping liquid masses with solid impurities capable of plugging the working apparatuses of the pump. The working apparatus of the pump is combined with a centrifugal pump mounted on a common drive shaft.

In the drawings of FIG. 1 and 2 are shown in vertical and horizontal (along the line A - B of FIG. 1) a combination pump consisting of turbine and centrifugal working devices mounted on a common axis, and FIG. 3 is a vertical section of a working apparatus equipped with a device making it particularly suitable for operation as a peat pump or a pump for other liquid masses with coarse solid impurities. FIG. Figure 4 shows in vertical section and in terms of a special construction the lower element of the working apparatus, equipped with a device for removing impurities at the inlet end of the pump. FIG. 5 shows the vertical section and the plan of the paddle screw with the torposaus.

The turbine pump of FIG. 1 consists of an engine rotating a vertical shaft 6 passing through the pipe c and carrying at its lower end a working machine which consists of a wheel 2 fixed to the shaft b with screw blades 4 rotating in the casing 1 and from a fixed vane guide Link 3.5. The housings 1 and 3 of the working apparatus are screwed together and screwed to the socket of the pipe c. The diameter of the impeller 2, 4 increases in the direction of fluid flow, which is done to enhance the lift force of the apparatus under other conditions being equal, because the difference between the radii of entry and exit of fluid from this working link causes a known centrifugal effect and an increase, as a result, of the useful head. In order that the speed of movement of the fluid along the blades 4 does not undergo drastic changes, the diameter of the hub 2 also smoothly increases from the bottom up. An upper wide edge of the working link adjoins the casing 3 of the guiding device with blades 5, tapering upward. The wheel 2, rotating in the fixed casing 1, captures the pumped liquid or liquid mixture and, due to the curvature of its blades, guides it upwards at an angle verticals Upon exiting the wheel 2, the liquid enters the fixed guide vanes 3, the vanes 5 of which give the liquid a vertical direction.

Since the working apparatus, as shown in FIG. 3, consists of several elements d (Fig. 1), then the second impeller 2, 4 captures and delivers fluid through its guide apparatus to the next blade wheel, etc. When the fluid passes from the impeller to the guide apparatus or from the last first, the fluid is subjected to the mechanical action of the pointed edges of the blades 4 and 5. In the case of pumping the liquid peat mass, such is subjected to grinding and grinding in the turbine working apparatus and, therefore, the pump also plays the role of a grinding apparatus.

The number of blades 2, 4 mounted on the same vertical shaft b, alternating with guide vanes 3, 5, the larger the larger the final head or lift height. At a significant lifting height, a significant amount of working machines rf would be required and, in the case of peat, for example, more than is necessary to achieve the desired grinding and grinding of the peat mass.

The number of turbine elements d of the pump can be reduced by using, in conjunction with the turbine, the centrifugal pump behind it. Such a device is shown in FIG. 1 and 2, where on the vertical shaft b there is a turbine pump at the bottom of the above device, and at the top is a centrifugal pump consisting of an impeller rotating in the casing 12 reinforced concentrically at the upper end of the pipe and equipped with an outlet 13. The impeller consists of the stars 11c are riveted blades 16 (Fig. 2) of sheet metal, and the casing 12 is one in common with the plate 14 on which the engine a and the ball bearing box 15 are mounted for shaft b connected to the motor shaft with a bevel gear 6i 62. Ko This bug is closed from below with a lid 17 screwing onto it with bolts. Such a combined pump, when operating as a tortosis compared to a pump consisting solely of turbine working apparatuses (Fig. 3), I aims, with an equal expenditure of force, to develop a higher final pressure or pressure and, consequently, to drive the pumped mass or more quantity, or more distant. This is due to the fact that the rotating impellers 2, 4, pro; Mechanical processing (grinding, grinding) of the masses is also exhausted and therefore requires more energy to lift the mass to the same height than the centrifugal pump specially adapted to create pressure.

In order to enhance the suction effect of the pump, it is advantageous to make the first (lower) element wider than the other elements. This can, for example, be achieved by applying a paddle wheel to the lower element in a cylindrical (rather than tapering) casing screwed to the wide base of casing 3 of the guiding apparatus. In the case when the pump works as a tortosis and you can opa; Since jams of roots, fibers, etc., of impurities between the blades of its lower impeller and the immobile casing surrounding this wheel, it is advisable to make this lower impeller as one piece with the casing, i.e., provide the wheel with the feed wheel rotating with it 7, As shown for, the pump element 6 of FIG. 1 and 3 and separately in FIG. four.

At the height of the lower edges of the blades of this lower wheel, it is possible, if desired, to fix on the leg 10 a stationary casing 9 (Figs. 1, 3 and 4), which cuts off the ends of the fibers rotating together with the wheel, etc., and thereby stops their harmful influence. operation of the pump.

in order to eliminate the blocking of the pump, it is possible to use the blade screw 8 (Figs. 1, 3 and 5) continued downward in the shaft L, rotating outside the casing and used to create a constant movement of the peat box in which it is sucked from. This screw 8 interferes with the root, mon, fibers, peat pieces and other solid and large impurities in the liquid porridge to form an impermeable cover and thus ensures the continuity and uniformity of the absorption of the peat mass. The operation of the same screw 8 is also intended to ensure that the mass of the substance of the same composition and consistency always enters the pump.

SUBJECT OF INVENTION.

1. A pump for transferring liquefied peat (peat), characterized by

; cumulative use: A) a lower turbine pump equipped with impellers 4 with diameters increasing I upwards and guide wheels 5 with diameters decreasing upward, respectively located in casing 1, 3, of which the bottom casing is supplied with a leg 10 for a knife 9 placed under the end with an impeller 6, which is made with clogging 7, with all impellers fixed I on a common shaft b, and B) of an upper centrifugal pump 11 fixed on the shaft b and located in the casing 12, 17, provided with an outlet 13, I inform shims pipe with a bottom turbo pump (Fig. 1-5). I ii. The modification described in paragraph 1 of the pump, characterized by the blade screw 8 attached to the lower end of the pump shaft b (Fig. 3 and 5).