RU2004718C1 - Well-point system water-lifting device - Google Patents

Abstract

Usage: in water supply. SUMMARY OF THE INVENTION: A movable housing is located outside the filter with locking balls and an inner annular protrusion in the upper part. A piston with a discharge valve is located in the casing above the filter. A sleeve with a suction valve is located inside the filter above the protrusion. A spring is installed between the sleeve and the protrusion. Inside the filter, an upper perforated washer placed above the sleeve and a lower perforated washer placed under the spring, and two coaxial rod stops are installed. One stop with a lower end is connected to the upper washer so that the upper end can interact with the discharge valve, and the other lower end is connected to the lower washer to interact with the suction valve. The drill bit is hollow and has radial holes in the upper part, equipped externally with a check valve in the form of an elastic cuff. 2 silt

Description

The invention relates to water supply, in particular to designs of tubular wells for the extraction of groundwater,

A water-lifting device for a drill screw is known, in which the filter is exposed after the device is drilled into the aquifer under its own weight when lifting the drill together with a movable screw auger.

A disadvantage of the known construction of the lifting device is the impossibility of using compressed air or water to accelerate the penetration, since the filter will be prematurely pushed out of the auger bowl during the passage of unstable, especially flooded rocks.

A water-lifting device for a tubular well is known, selected as a prototype, comprising a cinch: a married rod and locking balls interacting with a movable casing.

The disadvantage of this design is the relatively low rate of penetration of the well, since it is impossible to use compressed air or flushing fluid to accelerate drilling due to the fact that the suction and pressure valves are constantly located on their seats and thereby block the channels for purging or flushing.

An object of the invention is to accelerate well penetration by providing purge and flushing during drilling.

This is achieved by the fact that a water-lifting device containing a filter with locking balls and an inner annular protrusion in the upper part, a movable casing located outside the filter, a drill bit, a piston with a discharge valve, is placed in a movable casing above the filter, w / w with a suction valve, located; - inside the filter above the annular protrusion,; the spring, installed between the sleeve v with an annular protrusion, is equipped with a top perforated washer located inside the filter located above the ./lok and a bottom perforated sleeve located under the spring and two axial stops, coaxial with the sleeve, one of which is connected with the lower end with an upper perforated washer with i interactions in; a hot end with a pressure control panel i, and the other lower end - with a bottom perforated washer with the possibility of wintering with a suction valve, while the drill bit is made half-open and with radial holes in the upper part equipped with a check valve outside the drill bit in the form elastic cuffs.

Compared with the prototype, the invention is characterized by such distinguishing features as the presence of upper and lower perforated washers installed inside the filter with rod stops fixed to them, interacting with a discharge and suction valve, respectively, as well as a hollow drill bit with radial holes in the upper part

equipped externally with a non-return valve in the form of an elastic cuff, it allows to accelerate the penetration of the well by providing purging and flushing during drilling.

In FIG. 1 shows a lifting device in a position for pumping water; in FIG. 2 is in a position for drilling a well.

The lifting device consists of

drill bit 1, filter 2, movable casing 3 with inner annular groove 4, piston 5 with pressure valve 6 and lock 7, sleeve 8, suction valve 9 and two rod stops 10 and 11. The upper part of the filter is made with holes in which the locking balls 12 and with a bore under the spring 13 and the sleeve 8, having an annular groove 14 under the locking balls 12 outside, are chased with the possibility of their radial movement. The lower inner part of the sleeve 8 is made in the form of a saddle for the suction valve 9. Rod stops 10 and 11 with lower ends behind mounted on perforated washers 15 and 16 located in the bore of the upper part of the filter, respectively, under the spring 13 and above the sleeve 8.

A drill bit 1 is attached to the lower threaded portion of the filter with holes 17 in the upper portion closed externally by an elastic collar 18.

During the drilling process (Fig. 2), the filter 2 is protected from contamination by the movable casing 3. The suction 9 and pressure 6 valves are lifted from the seats with rod stops 10 and 11, air or flushing fluid passing to the drill bit, which exit through the openings 17

The drill bit is pulled out together with the auger, the drilled rock is brought to the surface, which accelerates the drilling process. After the device is buried into the aquifer, the string of pump rods 19 is lowered through the hollow augers and

is connected by a lock 7 to the piston 5. When the sucker rods press the spring sleeve 8, its annular groove 14 is aligned with the locking balls 12, which, when inserted, release the movable casing 3 from fixing on the filter 2. The column of sucker rods is held in place. and the movable casing 3 is raised to the height of the filter exposing, after which the piston is lifted, and the suction 9 and pressure 6 valves are released from the rod stops and sit on their seats.

The piston is driven by sucker rods 19 mechanically or manually.

Comparative tests of an experimental model of a water-lifting device using compressed air blowing with a prototype showed an average increase in the rate of penetration with air blowing, depending on the rocks, by a factor of two (see table.).

(56) Copyright certificate of the USSR No. 303415. cl. E 21 B 43/10, 1969.

Drilling with screws with a diameter of 100 mm without purging (prototype) and with purging are compressed. And air

Claims (1)

SUMMARY OF THE INVENTION A WATER LIFTING DEVICE FOR A TUBE WELL, comprising a filter with shutoff balls and an inner ring protrusion in the upper part, a movable housing located outside the filter, a drill bit, a piston with a discharge valve housed in a movable housing above the filter, a sleeve with a suction valve located inside a filter above the annular protrusion, and a spring installed between the sleeve and the annular protrusion, characterized in that it is equipped with an upper perforated plate mounted inside the filter w placed above the sleeve, and a lower perforated% plate placed under the spring, and two rod stops coaxial with the sleeve, one of which is connected with the upper end to the upper perforated washer with the upper end interacting with the discharge valve, and the other lower the end - with a bottom perforated washer with the possibility of interaction with the suction valve, while the drill bit is made hollow and with radial holes in the upper part equipped with a check valve outside the drill bit in the form of an elastic cuff. nineteen 6 Figure 1 Editor N. Fedorova Compiled by G. Gorokhov Tehred M. Morgenthal FIG. 2 Proofreader O. Kravtsova