Y-shaped filter with anti-bypass sealing structure

Abstract

The utility model discloses a Y-shaped filter with an anti-bypass sealing structure, which comprises a valve body, a filter cartridge, a flange valve cover, a sealing gasket and a sealing elastic sheet, the valve body is provided with a feed channel, a discharge channel and a filter cavity arranged between the feed channel and the discharge channel, the filter cavity is hermetically connected with the filter cartridge through the sealing gasket, and the filter cartridge is connected with the flange valve cover through the sealing gasket. A sealing gasket is arranged on the valve body, a filter cartridge is arranged in the valve body, the opening end of the filter cartridge abuts against the sealing gasket, the valve body is detachably connected with a flange valve deck, and a sealing elastic piece used for tightly pressing the filter cartridge is arranged between the valve body and the flange valve deck. The opening end of the filter cartridge always abuts against the sealing gasket, the gap between the filter cartridge and the valve body can be effectively eliminated through the pre-tightening force, it is ensured that zero-clearance fit is always kept between the filter cartridge and the valve body, and therefore the phenomenon that media are directly leaked to a discharging channel from the outer side of the filter cartridge without being filtered is avoided; and unfiltered impurities are prevented from damaging downstream equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of filters, and in particular to a Y-type filter with an anti-bypass sealing structure. Background Technology

[0002] Y-type filters, as a common pipeline filtration device, are widely used in fluid transport systems in industries such as petroleum, chemical, pharmaceutical, and food. Their main function is to remove mechanical impurities from the medium to protect the normal operation of downstream equipment. Traditional Y-type filters have a filter cartridge installed between the inlet and outlet channels of the valve body. The medium in the valve body enters through the inlet channel, is filtered by the filter cartridge, and flows out through the outlet channel. However, the size of the filter cartridge is difficult to control, which makes it easy for the filter cartridge to shift under the influence of fluid pressure and system vibration, thus creating gaps. Some unfiltered medium bypasses the outlet channel directly through the gaps on the outside of the filter cartridge, causing filtration failure. Utility Model Content

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: a Y-type filter with an anti-bypass sealing structure, including a valve body, a filter cylinder, a flange valve cover, a sealing gasket and a sealing spring. The valve body is provided with an inlet channel and an outlet channel, and a filter chamber is provided between the inlet channel and the outlet channel. The filter chamber is sealed to the filter cylinder through the sealing gasket, and the open end of the filter cylinder abuts against the sealing gasket. The valve body is detachably connected to the flange valve cover, and a sealing spring for pressing the filter cylinder is provided between the valve body and the flange valve cover.

[0004] Using the above technical solution, when the flange valve cover is locked, the sealing spring generates an elastic pre-tightening force that applies to the filter cartridge in the direction of the feed channel, so that the open end of the filter cartridge is always pressed against the sealing gasket. This pre-tightening force can effectively eliminate the gap between the filter cartridge and the valve body, ensuring that the filter cartridge and the valve body always maintain a zero-gap fit. This avoids the phenomenon that the medium leaks directly from the outside of the filter cartridge to the discharge channel without being filtered, and prevents unfiltered impurities from damaging downstream equipment.

[0005] The present invention is further configured such that the upper and lower ends of the filter cavity are provided with a coaxially distributed cylindrical groove one and a cylindrical groove two, the filter cylinder is simultaneously sleeved on the cylindrical groove one and the cylindrical groove two, and the cylindrical groove two is provided with a stepped portion for supporting the filter cylinder.

[0006] Furthermore, a sealing groove for engaging the sealing gasket is provided between the cylindrical groove two and the stepped portion.

[0007] Using the above technical solution, the valve body is machined with cylindrical groove one and cylindrical groove two by a milling machine, and the inner diameter of cylindrical groove one and cylindrical groove two are the same. The first and second ends of the filter cylinder are fixed by cylindrical groove one and cylindrical groove two, so that they are coaxially distributed in the filter cavity, thus avoiding the filter cylinder from tilting and losing its filtering effect.

[0008] The present invention is further configured such that the valve body is provided with threaded holes distributed in a circular pattern, and the flange valve cover is provided with mounting holes corresponding to the threaded holes.

[0009] Using the above technical solution, the valve body is provided with six sets of threaded holes. During installation, a double-ended screw is threaded into the threaded holes. When installing the flange valve cover, the double-ended screw is passed through the mounting hole and locked with a nut, so that the pressure of the flange valve cover is evenly distributed on the sealing spring, improving the sealing effect of the flange valve cover and preventing media leakage.

[0010] The present invention is further configured such that the sealing spring includes a positioning ring and a rubber layer covering the positioning ring, and the positioning ring is snapped between the valve body and the flange cover through the rubber layer.

[0011] Furthermore, the positioning ring includes an integrally formed circular portion and an elastic portion. The circular portion is covered with the rubber layer, and the elastic portion is circumferentially distributed on the inner side of the circular portion. The positioning ring abuts against the filter cylinder through the elastic portion.

[0012] Using the above technical solution, the positioning ring is divided into a circular part connecting the valve body and the flange cover, and an elastic part for providing elastic pre-tightening force to the filter cartridge. Rubber is wrapped around the circular part to form a static sealing structure, so that the positioning ring can simultaneously meet the functions of positioning installation, static sealing and providing elastic force.

[0013] The present invention is further configured such that the elastic part has an arcuate surface for abutting against the filter cylinder.

[0014] Using the above technical solution, the end face of the elastic part is bent to form an arc structure. When the positioning ring comes into contact with the filter cylinder, it is tangent to the surface of the filter cylinder through the arc surface, thus avoiding damage to the filter cylinder by the positioning ring.

[0015] The present invention is further provided that the annular portion is provided with positioning holes distributed in a circular pattern.

[0016] By adopting the above technical solution, when covering the rubber, the bonding strength between the rubber layer and the positioning ring is improved by using several positioning holes, which effectively prevents the rubber layer from falling off the surface of the metal ring and improves the service life of the sealing spring.

[0017] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the valve body of this utility model;

[0020] Figure 3 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 4 This utility model Figure 1 A magnified view of a section at point B in the middle;

[0022] Figure 5 This is a top view of the positioning ring in this utility model;

[0023] Wherein: 1-valve body, 2-filter cylinder, 3-flange valve cover, 4-sealing gasket, 5-sealing spring, 6-positioning ring, 7-rubber layer, 10-feed channel, 11-filter chamber, 12-discharge channel, 13-cylindrical groove one, 14-cylindrical groove two, 15-stepped part, 16-sealing groove, 17-threaded hole, 31-mounting hole, 61-circular ring part, 62-elastic part, 63-arc surface, 64-positioning hole; Detailed Implementation

[0024] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0025] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the intentions or conventions of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0026] like Figure 1 As shown, a Y-type filter with an anti-bypass sealing structure includes a valve body 1, a filter cartridge 2, a flange valve cover 3, a sealing gasket 4, and a sealing spring 5. The valve body 1 is provided with an inlet channel 10 and an outlet channel 12, and a filter chamber 11 is provided between the inlet channel 10 and the outlet channel 12. The filter chamber 11 is sealed to the filter cartridge 2 through the sealing gasket 4, and the open end of the filter cartridge 2 abuts against the sealing gasket 4. The flange valve cover 3 is detachably connected to the valve body 1, and a sealing spring 5 for pressing the filter cartridge 2 is provided between the valve body 1 and the flange valve cover 3.

[0027] Combination Figure 2 , 3As shown, in this embodiment, the upper and lower ends of the filter chamber 11 are provided with coaxially distributed cylindrical groove 13 and cylindrical groove 2 14. The filter cylinder 2 is simultaneously sleeved on the cylindrical groove 13 and cylindrical groove 2 14. The cylindrical groove 2 14 is provided with a stepped portion 15 for supporting the filter cylinder 2. A sealing groove 16 for engaging the sealing gasket 4 is provided between the cylindrical groove 2 14 and the stepped portion 15. The valve body 1 is machined with the cylindrical groove 13 and cylindrical groove 2 14 by a milling machine, so that the inner diameters of the cylindrical groove 13 and cylindrical groove 2 14 are the same. The two ends of the filter cylinder 2 are fixed by the cylindrical groove 13 and cylindrical groove 2 14, so that they are coaxially distributed in the filter chamber 11, and the filter cylinder 2 is prevented from tilting and losing its filtering effect.

[0028] Combination Figure 4 As shown, in this embodiment, the valve body 1 is provided with circumferentially distributed threaded holes 17, and the flange valve cover 3 is provided with mounting holes 31 corresponding to the threaded holes 17. The valve body 1 is provided with six sets of threaded holes 17. During installation, a double-ended screw is threadedly connected to the threaded holes 17. When installing the flange valve cover 3, the double-ended screw is passed through the mounting hole 31 and locked with a nut, so that the pressure of the flange valve cover 3 is evenly distributed on the sealing spring 5, improving the sealing effect of the flange valve cover 3 and preventing medium leakage.

[0029] Combination Figure 5 As shown, in this embodiment, the sealing spring 5 includes a positioning ring 6 and a rubber layer 7 covering the positioning ring 6. The positioning ring 6 is snapped between the valve body 1 and the flange valve cover 3 through the rubber layer 7. The positioning ring 6 includes an integrally formed circular part 61 and an elastic part 62. The circular part 61 is covered with the rubber layer 7, and the elastic part 62 is circumferentially distributed on the inner side of the circular part 61. The positioning ring 6 abuts against the filter cylinder 2 through the elastic part 62. The positioning ring 6 is divided into a circular part 61 connecting the valve body 1 and the flange valve cover 3, and an elastic part 62 for giving the filter cylinder 2 elastic force. The circular part 61 is covered with rubber to form a static The sealing structure allows the positioning ring 6 to simultaneously fulfill the functions of positioning installation, static sealing, and providing elasticity. The elastic part 62 has an arc surface 63 for abutting against the filter cylinder 2. The end face of the elastic part 62 is bent to form an arc structure. When the positioning ring 6 abuts against the filter cylinder 2, it is tangent to the surface of the filter cylinder 2 through the arc surface 63, which prevents the positioning ring 6 from damaging the filter cylinder 2. The ring part 61 has positioning holes 64 distributed in a circle. When the rubber is covered, the eight positioning holes 64 improve the bonding strength between the rubber layer 7 and the positioning ring 6, effectively preventing the rubber layer 7 from falling off the surface of the metal ring part 61 and improving the service life of the sealing spring 5.

[0030] The working principle of this utility model is as follows: When the flange valve cover 3 is locked, the sealing spring 5 generates an elastic pre-tightening force that applies to the filter cylinder 2 in the direction of the feed channel 10, so that the open end of the filter cylinder 2 is always pressed against the sealing gasket 4. This pre-tightening force can effectively eliminate the gap between the filter cylinder 2 and the valve body 1, ensuring that the filter cylinder 2 and the valve body 1 always maintain a zero-gap fit. The medium enters from the feed channel 10, flows along the filter chamber 11 into the filter cylinder 2, and after filtration, the medium flows out from the side wall of the filter cylinder 2 and then flows to the downstream equipment from the discharge channel 12. Impurities remain in the filter cylinder 2, thus completing the filtration. When maintenance is required, the filter cylinder 2 can be removed simply by opening the flange valve cover 3, so as to clean the filter cylinder 2 and reuse it.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A Y-type filter with an anti-bypass sealing structure, characterized in that, The valve body (1) includes a filter cylinder (2), a flange valve cover (3), a sealing gasket (4) and a sealing spring (5). The valve body (1) is provided with a feed channel (10) and a discharge channel (12), and a filter chamber (11) is provided between the feed channel (10) and the discharge channel (12). The filter chamber (11) is sealed to the filter cylinder (2) through the sealing gasket (4), and the open end of the filter cylinder (2) abuts against the sealing gasket (4). The valve body (1) is detachably connected to the flange valve cover (3), and a sealing spring (5) for pressing the filter cylinder (2) is provided between the valve body (1) and the flange valve cover (3).

2. A Y-type filter with an anti-bypass sealing structure according to claim 1, characterized in that: The filter chamber (11) has two coaxially distributed cylindrical grooves, one (13) and two (14), at its upper and lower ends. The filter cylinder (2) is simultaneously fitted into the cylindrical grooves one (13) and two (14), and the cylindrical groove two (14) has a stepped portion (15) for supporting the filter cylinder (2).

3. A Y-type filter with an anti-bypass sealing structure according to claim 2, characterized in that: A sealing groove (16) for engaging the sealing gasket (4) is provided between the cylindrical groove 2 (14) and the stepped portion (15).

4. A Y-type filter with an anti-bypass sealing structure according to claim 3, characterized in that: The valve body (1) is provided with circumferentially distributed threaded holes (17), and the flange valve cover (3) is provided with mounting holes (31) corresponding to the threaded holes (17).

5. A Y-type filter with an anti-bypass sealing structure according to claim 4, characterized in that: The sealing spring (5) includes a positioning ring (6) and a rubber layer (7) covering the positioning ring (6). The positioning ring (6) is snapped between the valve body (1) and the flange valve cover (3) through the rubber layer (7).

6. A Y-type filter with an anti-bypass sealing structure according to claim 5, characterized in that: The positioning ring (6) includes an integrally formed circular part (61) and an elastic part (62). The circular part (61) is covered with the rubber layer (7), and the elastic part (62) is circumferentially distributed on the inner side of the circular part (61). The positioning ring (6) abuts against the filter cylinder (2) through the elastic part (62).

7. A Y-type filter with an anti-bypass sealing structure according to claim 6, characterized in that: The elastic part (62) is provided with an arc surface (63) for abutting against the filter cylinder (2).

8. A Y-type filter with an anti-bypass sealing structure according to claim 7, characterized in that: The annular portion (61) is provided with positioning holes (64) distributed in a circular pattern.

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