RU56210U1 - LIQUID CLEANING FILTER - Google Patents

Abstract

Filter for cleaning liquid, characterized in that in order to increase filter performance and increase the period of its trouble-free operation without preventive maintenance, the filter element is made in the form of plates spaced apart at a certain distance. A filter mesh has been stretched over the plates, flowing around them on both sides, creating an increased filtration area and reducing the hydraulic resistance of the filter.

Description

The technical field to which the utility model relates.

The liquid purification filter refers to safety devices installed in process pipelines to protect the working parts of the pump and other equipment from mechanical impurities and other contaminants and can be used in oil, gas, chemical, food, biological and other industries on pipelines with diameters from D 15 mm to D 1400 mm with pressure up to 8 MPa.

State of the art

A known filter for cleaning liquid SU1209257, 01 V 29/33, comprising a housing with inlet and outlet nozzles, a filter element and a cover with bolted connections; the filter element and the cover are interconnected. The disadvantage of this filter is the difficulty of maintaining the filter when cleaning or replacing the filter element.

A known filter for cleaning liquid SU 1443934, B 01 D 29/10, comprising a housing with coaxially arranged nozzles, and a filter element mounted end to end in horizontal partitions. A disadvantage of the known filter is the small filtration area, which reduces its performance.

The closest solution to the claimed utility model is a drainage liquid mesh filter with a coaxially mounted basket filter element, manufactured according to TU 3683-016-00220322-99. The disadvantage of this filter is the small filtration area and the increased pressure drop between the input and output.

Utility Model Essence

The purpose of the proposed utility model is the development and creation of a device for filtering liquids with improved performance.

As a result of solving this problem, it becomes possible to provide an increase in the autonomous (maintenance-free) filter life by repeatedly increasing the filtration area and reducing the hydraulic resistance of the filter.

This goal is achieved due to the fact that in the proposed filter for cleaning liquid containing a vertical housing with coaxially placed inlet and outlet pipes, a filter element is installed, the frame of which is made in the form of plates. A filter cloth with cells providing the necessary degree of filtration was passed between the plates.

The inventive filter differs from the prototype in that the filter cloth, sequentially flowing around the frame elements, creates repeatedly repeated filter cloths that increase the filtration area. Thus, the hydraulic resistance of the filter is reduced and its performance is ensured with minimal pressure drops between the inlet and outlet of the filter.

List of figures and graphic images

Figure 1 presents a longitudinal section of the proposed filter; figure 2 is a section along aa of figure 1.

The filter consists of a housing 1 with nozzles of the inlet 2 and outlet 3 of the liquid to be cleaned and a drainage pipe 4 mounted in the lower bottom.

At the outlet pipe 3, a fitting 9 is inserted for supplying flushing fluid.

A filter element is assembled in the housing, assembled from sequentially mounted plates 5, interconnected by any known detachable connection. Filter plates 6 are stretched on the plates, sequentially flowing around them from opposite sides. The filter element is attached from the inside to the wall of the housing using the ears 7 through any detachable connection. The upper part of the housing is equipped with a cover 8, providing access to the internal cavity of the filter to remove the filter element.

By changing the number of plates in the filter element, the filtration area can be changed, thereby providing the necessary minimum pressure drop at the inlet and outlet of the filter.

The filter works as follows.

The cleaned fluid enters through the pipe 2 into the filter housing 1. Faced with a filter mesh 6, mechanical impurities are deposited in the lower part of the housing under the influence of gravitational forces. The liquid to be cleaned exits through pipe 3.

As the accumulation of mechanical impurities in the lower part of the body they are removed through the pipe 4.

As the filter mesh becomes dirty, it is cleaned by backwashing through the nozzle 9 with the drainage nozzle 4 open. To clean the remaining hard to remove part of the mechanical impurities of the plate 5 together

with mesh 6 are removed from the housing and are subjected to mechanical cleaning.

Technical and economic indicators

Using the proposed technical solution will improve the filter performance by increasing the filtration area, increase the uptime and facilitate its operation.

The prototype filter was tested and showed better results compared to basket filters.

Claims (1)

A filter for cleaning liquid, consisting of a vertical housing with inlet and outlet nozzles and a filter element, characterized in that the filter element is made up of series-mounted plates detachably connected to each other with the possibility of changing the filtration area, on which a filter mesh is stretched, sequentially flowing around the plates with opposite sides.