RU2307972C1 - Inertia-gravity self-cleaning mud trap - Google Patents

Abstract

FIELD: pipeline transport.

SUBSTANCE: invention relates to servicing of pipeline systems designed for transportation of liquid media and it can be used as auxiliary devices preventing accumulation of mud and dirt in pipelines. In proposed mud trap three-dimensional members are made in form of part of ball enclosed between two parallel secant planes. Height of three-dimensional members is equal to distance between part of members far from surface of pipe. Holes in pipe are made elongated and orientated parallel to plane of bottom. Two holders are arranged under each three-dimensional member on pipe for overlapping holes in pipe, being installed for rotation around pipe. Two blade cutting plates are secured on each holder at angle of 30°-32°, being arranged at a distance from surface of pipe equal to 1-3 mm. One ring, width from 7 to 9 mm is secured on lower holder on plates orientated in radial direction. Rectangular plates are secured over outer perimeter of ring at angle of 45° to vertical and at equal distance from each other. Member designed to prevent getting of particles earlier settled on bottom into medium to be cleaned is cone-shaped, with large base pointed upwards, which is secured on pipe, and mud discharge branch pipe is mounted in lower part of cone-shaped member.

EFFECT: increased degree of water cleaning.

2 cl, 1 dwg

Description

The invention relates to the field of maintenance of pipeline networks designed for transporting liquid media, and can be used as auxiliary devices preventing the accumulation of dirt in the water supply pipelines of the heating equipment of boiler houses, heating networks, central heating units and heating units of buildings, as well as process water flows and water cycles of industrial enterprises.

A known design of a filter for pipelines (SU, copyright 286968), designed to remove foreign matter from the water. The known filter contains a closed cylindrical housing, filter gratings and a lock gate, and the body volume is divided into at least three isolated sectors by filter gratings, radically mounted on a shaft mounted along the axis of the housing.

A disadvantage of the known design should be recognized as a weak pollution retarding ability.

A sump construction is also known (RU Patent 2008604). The specified sump contains a housing with a bottom, and in the housing are located on the same axis of the nozzle of the input and output fluid, a filter located between these nozzles. At the bottom of the casing, a dirt outlet pipe is made.

A disadvantage of the known device should be recognized the need for periodic cleaning, because due to the presence of a significant number of particles detained in the housing, the sump gradually loses its filtering properties.

The closest analogue of the claimed technical solution can be recognized as the well-known construction of the sump (RU, patent 42438). The specified sump contains a vertically located housing with a bottom, and in the housing are located on the same axis of the inlet and outlet of the liquid, as well as the outlet of the dirt. In addition, the sump contains a pipe installed in the housing between the inlet and outlet pipes, the upper end of the pipe being closed by a baffle casing, conical elements are fixed along the length of the pipe, forming an acute angle with the pipe from the bottom side, longitudinal sections are made on pipe sections located under the conical elements holes. In the lower part of the pipe after the last cone-shaped element, a cone-shaped surface is installed, which is designed to prevent particles that have previously settled on the bottom of the pipe from entering the cleaned medium.

A disadvantage of the known device should be recognized as its low efficiency, due to the ingress of suspended particles of contaminants into the slots in the pipe, and then into the cleaned environment.

The technical problem, solved by the proposed design, is to develop an improved coarse filter.

The technical result obtained by the implementation of the proposed design is to increase the degree of purification of the liquid.

To achieve the technical result, it is proposed to use an inertial-gravity sump self-cleaning, containing a vertically arranged cylindrical body with a bottom, and in the case there are fluid inlet and outlet nozzles on the same axis, as well as a mud outlet pipe, while it contains a pipe installed in the housing between the inlet and outlet nozzles, the upper end of which is closed by a baffle casing, volumetric elements are fixed along the length of the pipe, facing the wide side towards the bottom, to stkah pipe located under the volume elements are made holes for the water flow, while the lower part of the tube after the last voxel above the entrance nozzle and the dirt output set element intended to prevent the previously deposited on the bottom of the particles in the cleaned medium. The volumetric elements are made in the form of a part of a ball enclosed between two parallel secant planes, while the height of the volumetric elements is equal to the distance between their most distant parts from the pipe surface. The holes in the pipe are made extended and oriented parallel to the plane of the bottom. Under each volumetric element, on the pipe with overlapping holes in the pipe, two clips are fixed for rotation around the pipe, two knife plates are fixed on the clips at an angle of 30-32 ° to the radius of the pipe, spaced 1-3 mm from the pipe surface, on the bottom clip a ring with a width of 7 to 9 mm is fixed on the plates oriented in the radial direction, rectangular plates are fixed at an equal distance from each other along the outer perimeter of the ring at an angle of 45 ° to the vertical. The element designed to prevent particles that have previously settled on the bottom of the bottom from entering the medium to be cleaned is a cone-shaped element facing upwards and mounted on a pipe with a large base, and the dirt outlet pipe is mounted in the lower part of the cone-shaped element. Preferably, the distance between the upper surfaces of the volumetric bodies is from 15 to 20% of the length of the pipe.

The implementation of volumetric elements of this form provides, on the one hand, the presence of a laminar flow of purified water, which prevents the particles from being thrown into the holes in the pipe, and, on the other hand, ensures that dirt particles settled on the surface of the elements roll down. The height of the volumetric elements ensures the maximum possible number of rows of holes on the pipe, at which the laminarity of the flow is not disturbed and particles are not thrown into the holes. It was experimentally established that with a similar form of execution of volumetric elements, the horizontal orientation of the holes in the pipe is most preferable from the point of view of trapping contaminants in the body volume. The presence under each volumetric element on the pipe of two cages located above and below the holes in the pipe with the possibility of rotation around the pipe, and on these cages at an angle of 30-32 ° to the radius of the pipe two knife plates are fixed, spaced from the pipe surface at a distance of 1-3 mm, allows the rotation of the cages to clean with knife plates the dirt that has adhered to the holes in the pipe. An arrangement on the lower holder on radially oriented plate plates with a width of 7 to 9 mm, on the outer perimeter of which rectangular plates are fixed at an equal distance from each other at 45 ° to the vertical, ensures the rotation of the clips around the pipe due to the uneven pressure of the stream of purified water on rectangular plates. The implementation of the element, designed to prevent the ingress of previously settled particles on the bottom of the particles into the cleaned medium, cone-shaped and facing a large base upwards ensures the rolling of the settled dirt into the dirt outlet pipe.

During the development of the design during the operation of the prototype device, it was revealed that the particles of dirt can stick to the cone-shaped elements, and suspended particles can get into the longitudinal holes, which significantly reduces the efficiency of water treatment. It was experimentally established that the optimal surface shape of the volumetric elements and the horizontal orientation of the holes are optimal from the point of view of the suspension of suspended particles on the surface of volumetric elements.

In the future, the proposed construction of the sump will be disclosed using the drawing, on which the following notation is used: casing 1, inlet pipe 2, outlet pipe 3, pipe 4, breaker cone 5, volumetric elements 6, openings 7 in pipe 4, bottom 8, pipe 9 dirt removal, cone-shaped element 10, clips 11 and 12, knife plates 13, ring 14, rectangular plates 15.

Water purification using the GIG of the proposed design is as follows. Through the pipe 2 in the housing 1 serves the flow of the cleaned liquid. The flow enters the baffle cone 5 of the pipe 4 and evenly fills the entire volume of the housing 1 above the cone-shaped element 10. Through holes 7, water enters the pipe 4 and then through the pipe 3 to the clean water main. The contaminant particles suspended in the volume of the housing 1 are lowered by gravity onto the inner surface of the cone-shaped element 10. At the same time, the volumetric elements 6 prevent the suspended particles from entering the openings 7. The dirt accumulated in the cone-shaped element 10 through the periodically opening nozzle 9 for removing dirt is discharged into the drain line. Rotating around the pipe 4, the cages 11 and 12 move knife plates 13 along the surface of the pipe 4, which remove dirt stuck in the horizontal holes 7. The rotation of the cages 11 and 12 is due to the uneven pressure of the flow of purified water on rectangular plates 15, mounted on the ring 14, rigidly connected to the bottom clip 12.

When using the GIG of the proposed design due to the introduced design features, the degree of water purification is increased, which is expressed in a decrease in the mass of dry residue by evaporation of the purified water sample by 19% relative to the use of the prototype device.

Claims (2)

1. The mud sump is an inertial-gravity self-cleaning, containing a vertically arranged cylindrical body with a bottom, and in the housing located on the same axis of the nozzle of the input and output fluid, as well as the outlet pipe of dirt, while it contains a pipe mounted in the housing between the inlet and outlet nozzles, the upper end of which is closed by a baffle casing, along the length of the pipe there are fixed volume elements facing the wide side towards the bottom, on the pipe sections located under the volume elements, holes are made for water outflow, and on the bottom of the pipe after the last volumetric element and above the inlet of the dirt outlet pipe, an element is designed to prevent particles that have previously settled on the bottom from entering the cleaned medium, characterized in that the volumetric elements are made as part of a ball enclosed between two parallel secant planes, while the height of the volumetric elements is equal to the distance between their most distant parts from the surface of the pipe, the holes in the pipe are made extended and oriented parallel to the plane two bottoms, under each volumetric element on the pipe with overlapping holes in the pipe, two clips are fixed to rotate around the pipe, two knife plates are fixed at the clips at an angle of 30-32 °, spaced 1-3 mm from the pipe surface, at the bottom a ring on radially oriented plates is fixed with a ring from 7 to 9 mm wide, rectangular plates are fixed along the outer perimeter of the ring at an angle of 45 ° to the vertical at an equal distance from each other, while the element is designed to prevent opadaniya particles previously deposited on the bottom in the cleaning medium is a cone-shaped element facing upwards, and a large base attached to the pipe and nozzle withdrawal mud mounted in the lower part of the conical member. 2. The sump according to claim 1, characterized in that the distance between the upper surfaces of the volumetric bodies is from 15 to 20% of the length of the pipe.