RU2402371C1 - Self-purifier pressure water filter - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to water purification from mechanical impurities in industrial water supply systems. Proposed filter comprises housing, inlet, outlet and slime branch pipes, filter cartridge, cylindrical case with detachable cover, pipeline to feed water from inlet branch pipe to filter cartridge arranged inside the case bore and pressure gages mounted on inlet and outlet branch pipes. Cylindrical case and filter cartridge are secured to the housing from above. Note here that pipeline consists on angle piece with bore and tube with its top end makes a guide for filter cartridge face wall and do not reach the wall. Filter cartridge represents a slit-type cylindrical structure with face wall and bore to receive the tube. It is mounted on the tube and arranged inside cylindrical case with ID that allows fluid to flow along the filter cartridge surface.

EFFECT: increased time-between-rinsings, self-purification, simplified design.

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Description

The invention can be used in a industrial water supply system for water purification from mechanical impurities and sand.

Known hydrocyclone containing a cylindrical conical housing with a tangential feed pipe, a slurry and discharge pipe, a hydraulic damper made in the form of an oval-shaped pipe (1). The disadvantages of the device are:

- unsatisfactory quality of treatment of produced water from mechanical impurities due to the fact that the presence of rotational flow does not preclude the ingress of mechanical impurities into the cavity of the branch pipe with a small amount of discharged mass per unit time through a slurry pipe;

- the unsuitability of cleaning the pumped fluid from mechanical impurities under high pressure.

The closest technical solution to the proposed one is a filter consisting of a cylindrical body with covers, water supply and drain pipes, sludge drain and filter element (2).

The main disadvantages of the known device include:

- the complexity of the design containing a screw reciprocating drive and the sealing nodes of the movable joints;

- intensive filtering, due to the fact that the entire volume of the liquid being cleaned passes through the filter element;

- Disconnect the discharge pipe when removing the filter;

- high material consumption.

The objective of the invention is to simplify the design, reduce material consumption, increase the inter-wash period of the filter, and self-clean it.

This problem will be solved by the proposed pressure filter, including a housing, a cylindrical housing, a filter cartridge, inlet, outlet and slurry pipes.

New is that:

1. The inlet, outlet and slurry channels are made through the housing.

2. The filter cartridge and the cylindrical body with a detachable cover are fixed from above to the body, and from below through the body a supply channel with an inlet pipe and a valve is drawn and fixed.

3. The supply of purified water to the filter cartridge from the inlet pipe is made inside the product: from bottom to top through a pipeline consisting of a rectangle with a hole and a pipe; from top to bottom in the space bounded by the lid from above, from below the end of the filter cartridge, and from the sides, by the cylindrical body and the wall of the filter cartridge.

4. The filter cartridge of a cylindrical shape with a slotted design is installed in a cylindrical body made with an inner diameter that provides the liquid being cleaned with an annular flow directed downward along the surface of the filter cartridge.

Figure 1 shows a longitudinal section of the proposed filter.

Figure 2 is a section along aa. Figure 3 is a section along BB. Figure 4 shows particles of solids in the fluid stream of the filter.

The filter contains a housing 1 to which are fixed: a filter cartridge 2 on top, a cylindrical housing 3 with a cover 4, a supply pipe 5 passing through a bore in the housing from below, consisting of a square with an opening and a pipe, which is also a guide for the filter cartridge.

Pipes are installed to the body from the sides: output 6 and slurry 12.

A valve 7 with a pressure gauge 11 is installed on the outlet pipe. A valve 13 is installed on the sludge pipe. A pipe 8 with a pressure gauge 10 and a valve 9 is connected to the inlet pipe.

The lid is equipped with an air valve 14.

For ease of installation, the filter cartridge and cover are made with a handle.

The handle on the filter cartridge is also an emphasis on moving the filter cartridge up.

The filter works as follows:

opens input 9 and output 7 valves. When filling the filter with water, the air release valve 14 bleeds air in the filter. After filling the filter, the purified water under pressure with a fixed pressure gauge 10 is sent upward through the inlet pipe 5 into the cavity bounded by the cover 4, where it forms in an annular flow between the wall of the cylindrical housing 3 and the filter cartridge 2, which rushes down along the filter surface.

Particles with water having a size less than the filter slit slip into the slit, form in an annular flow around the inlet pipe of the pipeline 5 and are sent to the outlet pipe 6.

Particles in a water stream having a size larger than the filter slit slip over the surface above the slit (see Fig. 4) and, when exiting the stream, fall down under the action of gravitational forces of attraction down into the annular groove formed between the inner wall of the cylindrical body and the outer wall of the filter cartridge, and also fill the groove "a" (see figure 3). As the filter works on an annular recess between the inner diameter of the cylindrical body and the outer diameter of the filter, an increasing column of mud particles forms, which begin to close the filter slots, as a result of which the pressure at the outlet of the purified water begins to drop. Upon reaching the specified value of the pressure drop recorded by the pressure gauge 11, the filter is displayed for flushing. Without interrupting the operation of the filter, the valve 13 opens, as a result of which the mud particles that have accumulated and close the filter slots are discharged with a stream of water into a special container, while the pressure in the product partially drops. After cleaning the filter, the valve closes. The filter operation process is repeated. If after cleaning the filter it turned out that the filter slots are clogged with particles, then you should close the inlet valve 9 and open the outlet valve 7, through which to apply back pressure. Particles stuck in slots will be washed away by a fluid stream into a mud sump.

Information sources

1. A.S. 1558495, IPC B04C 5/12, 1990 "Hydrocyclone".

2. A.S. 1535589, IPC B01D 27/08 1990 “Self-cleaning cartridge filter for water purification”. Prototype.

Claims (1)

Self-cleaning pressure filter for cleaning water from mechanical impurities, sand, containing a housing, inlet, outlet, slurry nozzles and a filter cartridge, characterized in that it is equipped with a cylindrical body with a detachable cover, a pipe for supplying purified water from the inlet to the filter cartridge passing through the housing bore and fixed in it, and pressure gauges mounted on the inlet and outlet nozzles, while the cylindrical housing and the filter cartridge are fixed from above to the housing, and the pipeline consists of an angle nick with a hole and a pipe, the upper end of which is a guide for the end wall of the filter cartridge and does not reach the cover, while the filter cartridge is a slotted cylindrical design with an end wall and a hole for the pipe, mounted on the pipe and in the groove of the housing and placed inside a cylindrical housing made with an inner diameter, ensuring the passage of the cleaned fluid along the surface of the filter cartridge.

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