SU1423792A1 - Diaphragm-type pump - Google Patents

Description

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The invention relates to hydraulic engineering, in particular to diaphragm pumps with a working member in the form of a bellows, and can be used to lift water and other liquids, including aggressive or with a high content of mechanical impurities, from wells and wells.

The purpose of the invention is to increase durability.

FIG. I schematically shows a diaphragm pump, an oblique view; in fig. 2 - the installation location of the annular elements, made in the cross section in the form of an ellipse according to FIG. one; in fig. 3 is a view A of FIG. 2; in fig. 4 is a view B in FIG. 2

The diaphragm pump comprises a housing 1 installed in the housing bellows 2 with protrusions 3 and valleys 4 (Fig. 2) on the outer 5 and inner 6 surfaces, connected on one side to the supply pipe 7, and on the other to the discharge valve assembly 8, the suction valve 9 and the traction element 10. The bellows 2 is made of elastic material and is provided with an externally flexible elastic mesh jacket II with diamond-shaped cells 12 (FIGS. 3 and 4), the large diagonal of which is located in the areas of the depressions 4 along the bellows axis (Fig. 3), and in the areas of the projections 3 - perpendicular to it (Fig. 4). In the depressions 4 of the bellows 2, on the side of the elastic mesh shirt 11, annular elements 13 are installed, made in the cross section in the form of an ellipse (Fig. 2), whose major axis is directed perpendicular to the axis of the bellows.

In the protrusions 3 of the bellows 2, on the side of its inner surface 6, inner annular elements 14 are installed, made in an ellipse cross-section (Fig. 2), with the possibility of centering relative to the bellows 2 that passes along the axis of the bellows - rhenium ring elements 14 are connected by means of spokes 15 to coaxial thrust element 10 sleeves 16. One of the sleeves 16, which center the traction element 10 through the needle 15, is located between the adapter

17 and a supply line 7. The discharge 8 and the suction 9 valves are provided with respectively locking elements

18 and 19 with the stops 20 and 21 of their strokes, and the stroke limiter 21 of the valve 9 is connected to the valve 8, namely its seat 22, via the spring 23, which in this case is in the extended state.

Diaphragm pump operates as follows.

During the upward movement of the traction element 10, the shut-off element 18 of the discharge valve 8 is closed, and the volume of water above the valve 8 in the cavity of the bellows 2 is moved upwards and further into the supply pipe 7. The locking element 19 of the suction valve K. 9ana 9 This opens and the water from the water source (not shown) enters the cavity of housing 1. Previously stretched, the spring 23 receives additional stretching. The bellows 2, made of elastic material, begins to fold into an accordion, playing the role of sealing the inner cavity of the housing 1, and its elastic mesh net 11 with diamond-shaped cells 12 (Fig. 5) placed outside is an elongated, non-drying load, with In this case, the outer ring elements 13 prevent the bellows 2 from radial expansion, and the inner ring elements 14 connected by means of the spokes 15 with the sleeves 16 coaxially connected to the element 10 10, center the bellows 2 through the traction element relative to the pump axis. whole Traction element 10 itself is associated with a sub (not labeled), which is connected to the saddle (not labeled) of the pressure c-valve.

During the course of the traction element 1U down the sed- 5 l) of the discharge valve 8, and through it the elastic bellows 2 with its elastic sett 11 with diamond-shaped cells 11 placed outside under the action of the elastic forces of the spring 23 stretched in the previous course of the traction element go down, i.e. bellows 2 is stretched. The shut-off element 18 of the discharge valve 8 opens, and the shut-off element 19 of the suction valve 9 closes and water flows from the cavity of the housing through the open shut-off element 18 of the discharge valve 8 into the cavity of the elastic bellows 2. In the future, the cycle of the diaphragm pump pump repeats .

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Claims (2)

1. A diaphragm pump comprising a housing mounted in the housing a bellows with protrusions and depressions along its outer and inner surfaces connected to 5 on one side with a supply pipe, and on the other with a discharge valve assembly, a suction valve and a traction element, characterized in that, in order to increase durability, the syphone is made of elastic material and is provided with an external elastic mesh a shirt with rhomboid cells, whose large diagonal in the areas of the hollows is located along the axis of the bellows, and in the areas of the projections - perpendicular to it, with 5 than in the hollows of the bellows on the side of the elastic mesh shirt there are annular elements made in the cross-section in the form of an ellipse, the major axis of which is perpendicular to the axis of the bellows. 2. Pump but also. 1, characterized in that internal annular rings are installed in the protrusions of the bellows on its inner surface: (the elements are made in non-section in the form of an ellipse with the possibility of centering relative to the bellows of the bellows element. 74 7J srig.1 viewA Fig.Z Srig.