RU158800U1 - Mesh Filter with Variable Section Camera - Google Patents

Abstract

1. A mesh filter with a camera of variable cross section, including a housing with a direct-flow channel for fluid, having at the ends of the means for connecting with the inlet and outlet pipes, made in the housing, connected to the direct-flow channel at an angle to the flow of the incoming fluid, a camera of variable cross-section with a plug located in the cavity of the chamber of variable cross section with a plug with the possibility of blocking its front part of the direct-flow channel filter element, characterized in that the camera of variable cross section with aglushkoy made variable in shape and with a decreasing towards the parallel flow channel cross section, and the filter element is cylinder-like and has an elastic cross-sectional svoystva.2. A mesh filter with a camera of variable cross-section according to claim 1, characterized in that the cavity of the camera of variable cross-section is made in such a way that the water gap between the wall of the camera and the installed filter element gradually changes along the length of the camera from “zero”, from the direct-flow channel, to the selected one optimal value from the side of the plug. 3. A mesh filter with a camera of variable cross-section according to claim 2, characterized in that the water gap is selected from the condition of values in the middle part of the camera of variable cross-section from 1.5 to 6 mm. 4. A mesh filter with a variable cross-section chamber according to claim 1, characterized in that the variable-cross-section chamber is interfaced with a direct-flow channel at an angle of 30-60 ° to the incoming fluid flow. 5. The mesh filter with a variable cross-section chamber according to claim 1, characterized in that at the junction of the direct-flow channel and the variable chamber

Description

Strainer with variable chamber

The proposed solution relates to hydraulic devices that filter the working stream, and can be used in pipelines of cold and hot water, while filtering other fluid non-aggressive media to capture persistent mechanical impurities and is used, in particular, for installation in front of flowmeter devices.

The following solutions are known from the prior art related to the indicated field of technology: RU 2200614, IPC 7 B01D 35/06.

MAGNETIC MECHANICAL FILTER

This invention relates to hydraulic devices that filter the working stream, and can be used in pipelines of cold and hot water, for filtering other fluid non-aggressive media to capture persistent mechanical impurities (including ferromagnets), and is used for installation in front of flowmeter devices. The filter contains a Y-shaped housing with a flow channel and a channel with a plug connected to each other at an obtuse angle to the flow of the incoming medium. A hole filter with a magnetic filter element mounted on a holder is installed in the channel with a plug. At the inner end of the plug and inside the flow channel, centering annular grooves are made. The hole filter is made in the form of a grid with a certain cell size, and the magnetic element is in the form of alternating non-magnetic and magnetic washers of different diameters. The technical result consists in increasing the reliability of the device.

Also, a technical solution is known (Prototype)

- Patent for utility model: RU 117308 U1, June 27, 2012, IPC B01D 35/06.

The magnetic filter includes a housing with a direct-flow channel for the fluid, having at the ends of the means for connecting with the inlet and outlet pipes, made in the housing, connected to the flow channel at an angle to the flow of the incoming fluid, a channel with a plug located in the cavity of the channel with a plug, with the possibility of overlapping with its front part of the flow channel, a hole filter having a magnetic insert in the cavity, the front part of the hole filter having a diameter larger than the main diameter th part of the filter.

However, the known solutions do not allow reducing the size of the filtration chamber while maintaining the filtration area of the filter element.

The technical problem and the technical result of the proposed solution is to reduce the size of the filtration chamber while maintaining the filtration area of the filter element.

The above is provided by the proposed combination of essential features.

A mesh filter with a camera of variable cross-section, including a housing with a direct-flow channel for fluid, having at the ends of the means for connecting with the inlet and outlet pipes, made in the housing, connected to the direct-flow channel at an angle to the flow of the incoming fluid, a camera of variable cross-section with a plug, located in the cavity of the chamber of variable cross-section with a plug with the possibility of blocking the filter element with its front part of the direct-flow channel, and

- a camera of variable cross-section with a plug is made varying in shape and with decreasing cross-section in size towards the direct-flow channel, and the filtering element is cylindrical and has elastic properties in the cross section,

wherein

- the cavity of the chamber of variable cross-section is designed in such a way that the water gap between the wall of the camera of variable cross-section and the installed filter element gradually changes in length from “zero”, from the side of the direct-flow channel to the selected optimum value, from the side of the plug;

- the size of the water gap, is selected from the condition of the values in the middle along the length of the chamber of variable cross section from 1.5 to 6 mm .;

- a camera of variable cross section is paired with a direct-flow channel at an angle of 30-60 ° to the incoming fluid flow;

- at the junction of the direct-flow channel and the chamber of variable cross section with a plug in the end of the latter, an oval-shaped ledge is made for interaction with the end of the filter element;

- the oval-shaped ledge is made with a width of 1 to 3 mm.

The proposed solution is illustrated in the graphic materials on the presented figure (Fig. 1).

The positions in the figure indicate:

1 - direct-flow channel.

2 - a camera of variable cross-section (filtering chamber).

3 - filter element.

4 - a stub.

B - oval-shaped cross section.

In - a cylindrical section of the outlet.

G - oval ledge.

D - frontal area of the fence.

E is the discharge section of the direct-flow channel.

with - water gap.

The intersection of the direct-flow channel 1 and the chamber of variable cross-section 2 forms an oval-shaped cross section "B", with an oval-shaped ledge "G" for the end fixation of the filter element 3.

The ratio of the major axis of the oval-shaped ledge "G" of the camera of variable cross section to the minor axis is selected within 2-4 to 1.

The circumference of the filter element is comparable or equal to the perimeter of an oval-shaped ledge of a chamber of variable cross-section.

The diameter of the cylindrical section of the outlet "B" of the chamber of variable cross-section (from the side of the plug 4) is equal to or equal to the diameter of the filter element plus twice the water gap "c" necessary to drain the filtered liquid.

The size of the water gap "c" required for the removal of the filtered liquid is selected from the condition of the values in the middle along the length of the filter element: 1.5-6 mm;

At the same time, the water gap “c” gradually changes along the length of the chamber of variable cross-section (filter element) from “zero” (from the side of the oval ledge “G”) to the maximum (optimal) value (from the side of the plug 4).

When installing a cylindrical filter element in a chamber of variable cross-section, the diameter of the filter element, following the conical shape of the camera of variable cross-section 2 and decreasing in the direction of the direct-flow channel, the cross-sectional area, is converted into an oval, abuts against an oval-shaped ledge "G" (formed in the direct-flow channel 1 )

Moreover, the width of the oval-shaped ledge "G" interacting with the end part of the filter element is selected in the range: 1-3 mm.

The operation of the device.

The incoming liquid flow (with available suspended particles) limited by the walls of the direct-flow channel enters the frontal water intake zone “D”, formed by a conical section of the direct-flow channel.

A variable-section chamber with a plug connected to the direct-flow channel at an angle to the flow of incoming fluid and a plug located in it with the possibility of overlapping its front part of the flow channel, when installed in the variable-section chamber, completely blocks the direct-flow channel and is positioned in an oval-shaped ledge, taking its oval shape.

In this case, the incoming fluid flow from the frontal zone of water intake, which communicates with the internal cavity of the filtering element, passes filtered through the frontal part of the filtering element and through the walls in the internal cavity of the filtering element and enters the water drainage cavity (water gap “c”) of a variable section chamber 2 formed between the wall of the chamber of variable cross-section and the filtering element 3 and further into the discharge section of the direct-flow channel "E", forming an outgoing fluid flow.

At the same time, the selected geometric parameters of the device additionally provide the manufacturability of manufacturing a chamber of variable cross-section and a filter element, optimal hydrodynamic conditions for the passage of the filtered stream in the frontal zone of water intake, saving filter material, as well as reducing the size of the chamber of variable cross-section.

The proposed mesh filter with a camera of variable cross-section is installed in various pipelines in order to filter foreign particles contained in a fluid flowing through pipelines and includes a housing made in the form of a direct-flow channel having means at its ends for connection with supply and discharge pipelines.

The specified main direct-flow channel is conjugated at an angle in its middle part to a chamber of variable cross section with a plug.

The main part of the filter element 3 is placed in the cavity of the chamber of variable cross-section 2 with a variable radial water gap “c” to allow circulation of fluid around, along and the passage through the filter element 3, the filter element 3 being in contact with one end and positioned with a locking, damping the camera of variable cross-section 2 - plug 4, which has, for example, a centering groove and a central protrusion.

The proposed solution in the examples of specific performance may also include structural elements (features) of the following "possible" characteristics and properties:

- the filter element 3 is made of stainless steel;

- on the inner end of the plug and on the mating inner surface of the direct-flow channel, an annular groove centering the filter element is made and, accordingly, an oval-shaped ledge "G";

- the cells of the filter element are made with the hole sizes in the light, mm, from 0.1 × 0.1 to 5.0 × 5.0.

This design of a cone-tapering chamber of variable cross-section 2 in conjunction with the formed oval-shaped ledge "G", allows you to reduce the size of the filter chamber 2 while maintaining the filtration area of the filter element 3.

Claims (6)

1. A mesh filter with a camera of variable cross section, including a housing with a direct-flow channel for fluid, having at the ends of the means for connecting with the inlet and outlet pipes, made in the housing, connected to the direct-flow channel at an angle to the flow of the incoming fluid, a camera of variable cross-section with a plug located in the cavity of the chamber of variable cross section with a plug with the possibility of blocking its front part of the direct-flow channel filter element, characterized in that the camera of variable cross section with aglushkoy made variable in shape and with a decreasing towards the parallel flow channel cross section, and the filter element is cylinder-like and has elastic properties in cross-section. 2. A mesh filter with a camera of variable cross-section according to claim 1, characterized in that the cavity of the camera of variable cross-section is made in such a way that the water gap between the wall of the camera and the installed filter element gradually changes along the length of the camera from the “zero” side of the direct-flow channel, to the selected optimum value from the side of the plug. 3. A mesh filter with a camera of variable cross-section according to claim 2, characterized in that the water gap is selected from the condition of values in the middle along the length of the camera of variable cross-section from 1.5 to 6 mm. 4. The mesh filter with a camera of variable cross-section according to claim 1, characterized in that the camera of variable cross-section is paired with a direct-flow channel at an angle of 30-60 ° to the incoming fluid flow. 5. A mesh filter with a camera of variable cross-section according to claim 1, characterized in that at the junction of the direct-flow channel and the camera of variable cross-section with a plug at the end of the latter, an oval-shaped ledge is made for interaction with the end of the filter element. 6. A mesh filter with a camera of variable cross-section according to claim 5, characterized in that the oval-shaped ledge is made from 1 to 3 mm wide.

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