RU164989U1 - DRILL FILTER FILTER - Google Patents

Abstract

The borehole filter, consisting of a support frame, which is a metal hole pipe, a wire spiral imposed on the stiffening rods, the support frame is a continuation of the lower part of the borehole casing, located on the outside of the wire spiral, centering plates are located between the support frame and the wire spiral characterized in that the centering plates are fixed on the upper and lower couplings and are located vertically at an angle of 120 relative to each other uga, stiffening rods are made in the form of an ellipse and are fixed on the outer side of the upper and lower couplings.

Description

IPC ⁷ Е03В 3/18

ЕВВ 43/08

Borehole filter.

The utility model relates to the mining industry, namely to water supply and water reduction, and can be used when equipping water and drainage wells with filters.

Known filter borehole, consisting of a support frame, which is a metal hole or slotted tube; a wire spiral or lining mesh with large cells superimposed on the stiffening rods, the support frame is a continuation of the lower part of the casing of the borehole, located on the outside of the filter mesh, centering rings are located between the support frame and the filter mesh, a gripping ring is installed in the upper part of the filter, the upper part of the stiffening rods is fixed in the holes of the gripping ring. (Pat. 141921 Russian Federation. IPC Е21В 43/08, Е03В 3/18. Filter of a borehole. Akulshin A.A., Pereverzeva V.S., Akulshin V.A., Akulshin A.A. No. 2013155798/03 , declared on December 16, 2013, published on June 20, 2014).

A disadvantage of the known filter design is the ability to break the filter when it is removed from the borehole, associated with an imperfect shape of the gripping ring that does not provide sufficient adhesion to the grippers when removing the filter from the borehole.

The closest analogue is the design of the filter, consisting of a support frame, which is a metal hole pipe; wire spiral imposed on the stiffening rods, the support frame is a continuation of the lower part of the borehole casing, located on the outside of the filter mesh, centering rings are located between the support frame and the filter mesh, a gripping ring is installed in the upper part of the filter, made with a circular groove located from the bottom of the gripper ring, the upper part of the stiffening rods is fixed in the holes of the gripper ring (Pat. 152601 Ros. Federation: IPC E21B43 / 08. Drill hole filter s. Akulshin AA Akulshin VA, Akulshin AA Pereverzeva VS № 2014140405/03, appl. 10.07.2014, publ. 10.06.2015).

The disadvantages of this design are the design complexity, high hydraulic resistance, the difficulty of fixing the centering rings on the filter surface.

The technical task of the proposed utility model is to create a design that is easily removed from a borehole filter, reducing hydraulic resistance, simplifying operation, and, consequently, reducing capital costs.

The technical result is achieved by the fact that the filter of the borehole consists of a supporting frame, which is a metal hole pipe; wire spiral superimposed on stiffening rods; the support frame is a continuation of the lower part of the casing of the borehole, located on the outside of the wire spiral, between the support frame and the wire spiral there are centering plates mounted on the upper and lower couplings and located vertically at an angle of 120 ⁰ relative to each other, the stiffening rods are made in ellipse shaped and secured externally to the upper and lower couplings.

The filter design of the borehole is illustrated by the drawings of FIG. 1, FIG. 2 and FIG. 3. Figure 1 presents a diagram of a filter device of a borehole, section B-B, Figure 2 is a diagram of a device of a filter without a support frame, which is a metal hole pipe, Figure 3 is a section A-A.

The borehole filter consists of a support frame 1, which is a metal hole pipe; wire spiral 2, superimposed on the stiffener rods 3, the support frame 1 is a continuation of the lower part of the casing of the borehole 6. The support frame 1 is located on the outside of the wire spiral 2, between the support frame 1 and the wire spiral 2 are vertically centering plates 7 at an angle of 120 ⁰ relative to each other. The centering plates are fixed on the upper 4 and lower 5 couplings, the stiffening rods 3 are made in the form of an ellipse and are fixed on the outside on the upper 4 and lower 5 couplings.

The borehole filter works as follows: the support frame 1 is installed when the casing of the borehole is installed and is a continuation of their lower part. It is designed to hold gravel and borehole filter. Water from the aquifer, passing through gravel sprinkling, enters the borehole through the support frame 1 and the wire spiral 2 located on the stiffener rods 3, mounted on the upper 4 and lower 5 couplings. The centering of the filter of the borehole during lowering and lifting is carried out using centering plates 7 located between the support frame 1 and the wire spiral 2 and not allowing the filter to move relative to the center of the well.

The height of the borehole filter is adjusted by adding the filter sections of the lower coupler 5 of the subsequent section to the upper coupler 4 of the previous filter section.

If it is necessary to repair or replace the filter, it is removed from the borehole by gripping the filter by the lower surface 8 of the upper coupling 4.

Claims (1)

The borehole filter, consisting of a support frame, which is a metal hole pipe, a wire spiral imposed on the stiffening rods, the support frame is a continuation of the lower part of the borehole casing, located on the outside of the wire spiral, centering plates are located between the support frame and the wire spiral characterized in that the centering plate fixed to the upper and lower couplings and are disposed vertically at an angle of 120 ^° relative to each other, stiffening rods are made in the form of an ellipse and are fixed on the outer side of the upper and lower couplings.

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