Metal filter element integrated with venturi tube

Abstract

The utility model discloses a metal filter element integrated with a venturi tube, which comprises a screwed joint, the venturi tube is arranged on the inner side of the screwed joint, the venturi tube comprises an inlet section, a contraction section, a throat section and a diffusion section, a filter cartridge is welded on the other side of the screwed joint, and a limiting joint is welded at the other end of the filter cartridge; the venturi tube is integrated in the filter element threaded connector, airflow is accelerated and diffused through the venturi tube and is directly blown into the filter element filter cartridge, airflow loss is avoided, and a better back flushing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter elements, in particular to a metal filter element integrated with a venturi tube. Background Art

[0002] Venturi tubes are widely used in filter element backflushing systems. Their main function is to induce secondary airflow and enhance the backflushing effect. Venturi tubes used in filter element backflushing systems are generally set at the end of the backflushing pipeline. Because there is a certain gap between the venturi tube and the upper port of the filter element, when the airflow is accelerated and diffused through the venturi tube, part of it will be blown outside the upper port of the filter element, resulting in the loss of some backflushing airflow. Utility Model Content

[0003] In view of the above technical problems in the related art, the present invention provides a method for solving the above problems.

[0004] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0005] A metal filter element with an integrated venturi tube is characterized by comprising a threaded joint, a venturi tube being provided on the inner side of the threaded joint, the venturi tube comprising an inlet section, a contraction section, a throat section and a diffusion section, a filter cartridge being welded to the other side of the threaded joint, and a limit joint being welded to the other end of the filter cartridge.

[0006] Furthermore, the threaded joint is lengthened.

[0007] Furthermore, the semi-cone angle of the inlet section of the venturi tube is 10°.

[0008] Furthermore, the semi-cone angle of the diffusion section of the venturi tube is 8°.

[0009] The beneficial effects of the present invention are as follows: the venturi tube of the present application is integrated in the filter element threaded joint, and the airflow is accelerated and diffused through the venturi tube and blown directly into the filter element cartridge without losing airflow, thereby improving the backflush efficiency and having a better backflush effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] The utility model is described in further detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a cross-sectional view of a metal filter element with an integrated venturi tube according to an embodiment of the present invention;

[0013] Figure 2 It is a side view of a metal filter element with an integrated venturi tube according to an embodiment of the present invention;

[0014] In the picture:

[0015] 1. Threaded joint; 2. Venturi tube; 3. Filter cartridge; 4. Limit joint. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0017] like Figure 1-2 As shown, according to the present invention, a metal filter element with an integrated venturi tube is disclosed, comprising a threaded joint 1, a venturi tube 2 is opened inside the threaded joint 1, and the venturi tube 2 includes an inlet section, a contraction section, a throat section, and a diffusion section. A filter cartridge 3 is welded to the other side of the threaded joint 1, and a limit joint 4 is welded to the other end of the filter cartridge 3. The threaded joint is extended, and the semi-cone angle of the inlet section of the venturi tube is opened at a 10° angle, and the semi-cone angle of the diffusion section of the venturi tube is opened at a 8° angle.

[0018] In one embodiment of the present invention, the threaded joint 1 of the integrated venturi tube 2 is a conventional threaded joint lengthened, and the conventional through hole inside is changed into a venturi hole, and then the filter cartridge 3 is butt-welded to the threaded joint 1 of the integrated venturi tube 2, and then the filter cartridge 3 is butt-welded to the limit joint 4;

[0019] The venturi tube of the present application is integrated in the filter element threaded joint. The airflow is accelerated and diffused through the venturi tube and blown directly into the filter element cartridge without losing airflow, thereby improving the backflush efficiency and having a better backflush effect.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A metal filter element with an integrated venturi tube, characterized by: The invention comprises a threaded joint (1), a venturi tube (2) is provided on the inner side of the threaded joint (1), the venturi tube (2) comprises an inlet section, a contraction section, a throat section and a diffusion section, a filter cartridge (3) is welded on the other side of the threaded joint (1), and a limit joint (4) is welded on the other end of the filter cartridge (3).

2. The metal filter element with integrated venturi according to claim 1, characterized in that: The threaded joint (1) is lengthened.

3. The metal filter element with integrated venturi according to claim 1, characterized in that: The semi-cone angle of the inlet section of the venturi tube (2) is 10°.

4. The metal filter element with integrated venturi according to claim 1, characterized in that: The semi-cone angle of the diffusion section of the venturi tube (2) is 8°.

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