Abstract:
Closing element (1) of a gate valve (2) containing a closure plate (1.1) placed in the body (3) of said valve, said valve comprising a pipe segment (4), a side pocket (5) and guide rails (9), said closing element being slidingly movable along a displacement axis being perpendicular to the central fluid flow axis (x), wherein said closing element possesses at least two pairs of guiding projections (10) of the closure plate (1.1), wherein a pair of lower guiding projections (16) is found on a level that is closer to the lower face seal (14), and a pair of upper guiding projections (17) is found on a level that is closer to a cap (8) of a drive unit (6).
Abstract:
The shielding column of a pressure pipeline branch hydraulically connected to a pressure conduit principally ended with the vertically positioned lower element of a quick release coupling and possessing a shielding pipe, characterised in that a horizontal section of the pressure conduit (2), and the principally vertically positioned lower element (1.1) of the quick release coupling (1) is connected principally perpendicularly with the horizontal section of the pressure conduit (2), while both ends (2.1, 2.2) of the horizontal section of the pressure conduit (2) end with shut-off gate valves (4.1, 4.2) with principally vertically positioned shanks (5.1, 5.2).
Abstract:
- 15 - Abstract A method of pumping a liquid using at least one operating tank (2), a pneumatic positive pressure displacement pump (1), which is based on the fact that during pumping, inflow valve (4) closure is controlled through the introduction of a control gas into the operating tank (2) positive pressure displacement pump (1) at a pressure lower than the pressure of the compressed actuating gas and from the hydrostatic pressure at the egress of the outflow valve but higher than the hydrostatic pressure on the ingress into the inflow valve (4), which causes the inflow valve (4) to close. A device for pumping liquids comprising at least one operating tank (2) of a positive pressure displacement pump (1), to which leads a control gas conduit (10) with a control valve (11) mounted thereon, which is used to close off the inflow valve (4), and the lower section of the operating tank (2) has a narrow section in the form of a vertical cylinder (16). (14 claims) - 16 - - 17 - - 18 -
Abstract:
The method of the present invention is characterized in that: at the first stage, compressed air is supplied in the place of the pressure pipeline that is at a distance from the pumping device (3) of wastewater for the purpose of at least partial removal of wastewater from the remaining part of the pressure pipeline (2) and a reduction of the operating pressure of the pumping device (3) while it is started again, and at the second stage, compressed air is supplied during another pumping cycle in order to increase and maintain pressure that is close to the proper operating pressure of the pumping device (3), whereas after the proper wastewater operating pressure of the pumping device has been exceeded, the first stage "a") occurs. The device according to the invention is characterized in that the flushing device (7) of the pressure pipeline (2) possesses a horizontal pipe storage tank (6) of compressed air, whose beginning is found in the immediate vicinity of the pumping device (3), and its end is in the immediate vicinity of the place where compressed air is supplied to the pressure pipeline (2).
Abstract:
The sewage lifting station with intermediate separation of solid particles characterized in that the solid waste separator (7) is in principle in the form of a U-shaped pipe (12), and both ends of the solid waste separator (7) are situated at the same side of the side wall (10) the pre-treated sewage retention tank (5).