A Y-type filter

Abstract

The present invention relates to a Y-type filter. The filter includes a main pipe and a connecting pipe. The main pipe has a medium inlet and a medium outlet. The connecting pipe has a discharge port. A filter screen is provided in the connecting pipe. The filter screen is a cylindrical structure with open ends. One end of the filter screen is connected to the medium inlet of the main pipe, and the other end of the filter screen is connected to the discharge port of the connecting pipe. The end of the connecting pipe has a mounting section. The mounting section is connected to a sealing cover. The sealing cover includes a connecting cylinder, an end plate and a force-applying portion. The connecting cylinder and the mounting section are threadedly connected. A first medium through hole is provided on the connecting cylinder. When the sealing cover is installed, the medium flows out from the first medium through hole on the connecting cylinder to reduce the impact of the medium on the sealing cover, facilitating the connection between the sealing cover and the mounting section, until the first medium through hole is blocked by the mounting section, the medium is intercepted, and the installation of the sealing cover is completed. The present application has effectively solved the problem in the prior art that the Y-type filter is difficult to reseal and install after being disassembled.

Description

Technical Field

[0001] The invention relates to the field of filters, in particular to a Y-type filter. Background Art

[0002] Y-type filters are an essential filtering device for piping systems that transport media. They are typically installed at the inlet of pressure reducing valves, pressure relief valves, level control valves, or other equipment to remove impurities from the media and protect the valves and equipment. Y-type filters feature advanced structure, low resistance, and convenient drainage, making them suitable for a variety of media, including water, oil, and gas.

[0003] Existing Y-type filters generally include a main pipe and a connecting pipe. A filter basket is provided inside the connecting pipe. The end of the connecting pipe is provided with a flange, a flange cover and fasteners. When the liquid enters the filter basket through the main pipe, solid impurity particles are blocked in the filter basket, while the clean fluid passes through the filter basket and is discharged from the filter outlet.

[0004] When solid waste needs to be collected, the fasteners and flange cover are opened, as in the case of a high-pressure, leak-proof Y-type filter disclosed in Chinese invention patent application publication number CN115177995A. However, when pipeline pressure is high, the fixed impurity particles will flow out rapidly along with the high-pressure medium after the flange cover is opened. Due to the high pressure, it is difficult to close the flange cover after opening the flange cover, resulting in an ineffective seal between the flange cover and the pipe, causing leakage of the conveyed medium or even more serious consequences. Summary of the Invention

[0005] The object of the present invention is to provide a Y-type filter to solve the problem in the prior art that the Y-type filter is difficult to reseal and install after the solid impurity particles are removed.

[0006] To achieve the above-mentioned purpose, a Y-type filter of the present invention adopts the following technical solution: a Y-type filter includes a main pipe and a connecting pipe, the main pipe has a medium inlet and a medium outlet, the connecting pipe has a discharge port, a filter screen is arranged in the connecting pipe, the filter screen is a cylindrical structure with open ends, one end of the filter screen is connected to the medium inlet of the main pipe, and the other end of the filter screen is connected to the discharge port of the connecting pipe, the end of the connecting pipe has an installation section, and the port of the installation section forms the discharge port; the installation section is connected to a sealing cover, the sealing cover includes a connecting cylinder, an end plate and a force-applying part, the connecting cylinder and the installing section are threadedly connected, and a first medium through hole is provided on the connecting cylinder, so that the medium flows out of the first medium through hole during installation to reduce the outward impact of the medium on the sealing cover; as the connecting cylinder is tightened into the installing section, the first medium through hole is gradually blocked by the installing section to achieve medium interception.

[0007] The mounting section is further provided with a mounting seat on the outside, a first external thread structure is provided on the outside of the mounting section, a stepped hole is provided on the inside of the mounting seat, a first internal thread structure that cooperates with the first external thread structure is provided on the inner wall of the large-diameter section of the stepped hole, a second internal thread structure is provided on the inner wall of the small-diameter section of the stepped hole, and the step surface is used to seal with the end face of the mounting section; a third internal thread structure is provided inside the mounting section, and a second external thread structure that cooperates with the second and third internal thread structures is provided on the outer side surface of the connecting cylinder; a second medium through hole is provided on the hole wall of the large-diameter section of the stepped hole;

[0008] During installation, first, the sealing cover is connected to the mounting seat by screwing the second external thread structure onto the second internal thread structure. At this time, the first medium through hole leaks out of the mounting seat; then, the mounting seat is installed on the mounting section by screwing the first internal thread structure onto the first external thread structure. During the process of installing the mounting seat into place, the medium flows out from the second medium through hole until the second medium through hole is gradually blocked by the mounting section to intercept the medium, and the mounting seat is installed in place; then, the sealing cover is screwed by the force-applying part. During the process of tightening the sealing cover, the medium flows out from the first medium through hole until the first medium through hole is gradually blocked by the mounting seat and the mounting section to intercept the medium, and the installation of the sealing cover is completed.

[0009] The aperture of the second medium through hole is larger than the aperture of the first medium through hole.

[0010] A sealing structure is provided between the end plate portion of the sealing cover and the end surface of the mounting seat.

[0011] There are a plurality of first medium through holes which are evenly spaced and distributed along the circumference, and the apertures of the first medium through holes are the same.

[0012] There are a plurality of second medium through holes which are evenly spaced and distributed along the circumference, and each second medium through hole has the same aperture.

[0013] The first medium through hole and the second medium through hole are both circular holes.

[0014] The number of the first medium through holes and the number of the second medium through holes are both 6.

[0015] The force applying portion is a regular hexagonal protrusion.

[0016] The beneficial effects of the present invention are as follows: the sealing cover and the mounting section are threadedly connected. When the sealing cover is installed, the medium flows out from the first medium through-hole on the connecting cylinder, thereby reducing the impact of the medium on the sealing cover and facilitating the connection between the sealing cover and the mounting section. The first medium through-hole is blocked by the mounting section, the medium is intercepted, and the installation of the sealing cover is completed. This application effectively solves the problem in the prior art that the Y-type filter is difficult to reseal and install after being disassembled.

[0017] Furthermore, the sealing cover and the mounting section are connected via a threaded structure, and small solid particles in the medium can enter the third internal thread structure, preventing the second external thread structure of the sealing cover's connecting barrel from being screwed into the third internal thread structure of the mounting section. The provision of a mounting seat effectively solves this technical problem. By pre-connecting the sealing cover and the mounting seat, the mounting seat positions the sealing cover after it is connected to the mounting section. Once the mounting seat is in place, the sealing cover can be directly screwed in to align the connecting barrel and screw it into the mounting section. Furthermore, the mounting seat is also provided with a second medium through-hole. When the mounting seat is installed, the medium flows out of the second medium through-hole and the first medium through-hole, reducing the impact of the medium on the mounting seat and facilitating the installation of the mounting seat. The pre-installation of the sealing cover and the mounting seat allows the first medium through hole to leak out of the mounting seat. The purpose is to allow the medium to flow out of the first medium through hole when the sealing cover is screwed after the mounting seat is installed in place, reducing the impact of the medium on the sealing cover and facilitating the tightening of the sealing cover. Until the sealing cover is installed in place, the first medium through hole is blocked by the mounting section and the medium is intercepted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a Y-type filter of the present invention;

[0019] Figure 2 It is a structural diagram of the sealing plate and the mounting seat. DETAILED DESCRIPTION

[0020] An embodiment of a Y-type filter of the present invention is as follows Figure 1-2 As shown, the pipe comprises a main pipe 1 and a connecting pipe 2. The main pipe has a medium inlet 3 and a medium outlet 4, while the connecting pipe has a discharge port 5. A filter screen 18 is located within the connecting pipe. The filter screen is a cylindrical structure with open ends. One end of the filter screen is connected to the medium inlet of the main pipe, and the other end is connected to the discharge port of the connecting pipe. The filtered medium passes through the filter screen and is discharged from the medium outlet of the main pipe.

[0021] The end of the connecting pipe has a mounting section 9, the port of the mounting section forms the above-mentioned discharge port, and the outside of the mounting section is provided with a first external thread structure 10. The mounting section is connected to a mounting seat 6 and a sealing cover 7, and the sealing cover 7 includes a connecting cylinder 13, an end plate 14 and a force-applying portion 15, and the force-applying portion is a regular hexagonal protrusion. The mounting seat is threadedly connected to the outside of the mounting section, and the connecting cylinder of the sealing cover is threadedly connected to the inside of the mounting section. Specifically, a stepped hole is provided inside the mounting seat, and a first internal thread structure 8 that cooperates with the first external thread structure 10 is provided on the inner wall of the large-diameter section of the stepped hole, and a second internal thread structure 12 is provided on the inner wall of the small-diameter section of the stepped hole. The step surface is used to seal with the end face of the mounting section, and a sealing ring can be used. A third internal thread structure 17 is provided inside the mounting section 9. The outer side surface of the connecting cylinder is provided with a second external thread structure 16 that cooperates with both the second internal thread structure and the third internal thread structure.

[0022] A first medium through hole 19 is provided on the connecting cylindrical portion of the sealing cover, and a second medium through hole 11 is provided on the hole wall of the large-diameter section of the stepped hole. Both the first medium through holes and the second medium through holes are multiple and evenly spaced along the circumference. Specifically, there are six first medium through holes with equal apertures, and six second medium through holes with equal apertures. Both the first medium through holes and the second medium through holes are circular in shape. The aperture of the second medium through hole is larger than that of the first medium through hole. A sealing structure is provided between the end plate portion of the sealing cover and the end face of the mounting seat. The sealing structure utilizes a sealing ring provided on the inner side of the end plate portion.

[0023] During use, after removing the filtered solid impurity particles and reinstalling them, first pre-connect the sealing plate to the mounting base. At this time, the first medium through-hole on the connecting cylinder of the sealing cover is not blocked by the mounting base and leaks out of the mounting base. Then, align the mounting base with the mounting section of the pipe and screw it in. Since the second medium through-hole has a larger aperture and is closer to the medium outlet, the medium is mainly discharged from the second medium through-hole, with a small amount discharged from the first medium through-hole. Continue screwing the mounting base until it is screwed into place. During the screwing process, the second medium through-hole is gradually blocked by the outer surface of the mounting section. Finally, screw the sealing cap. At this time, the medium is discharged through the first medium through-hole. Continue screwing the sealing cap until it is screwed into place. During the screwing process, the first medium through-hole is gradually blocked by the mounting base and the mounting section, achieving medium interception and blocking.

[0024] In other embodiments of the present invention, the number of the first medium through holes can be adjusted according to actual needs; the number of the second medium through holes can also be adjusted according to actual needs; the first medium through holes and their shapes can also be triangles, regular polygons, trapezoids, etc.; the force-applying part can also be a regular hexagonal groove; the force-applying part can also be a protrusion or groove of other structures for operation of the force-applying tool.

Claims

1. A Y-type filter, comprising a main pipe and a connecting pipe, wherein the main pipe has a medium inlet and a medium outlet, the connecting pipe has a discharge port, and a filter screen is provided in the connecting pipe. The filter screen is a cylindrical structure with two open ends, one end of the filter screen is connected to the medium inlet of the main pipe, and the other end of the filter screen is connected to the discharge port of the connecting pipe, characterized in that: The end of the connecting pipe has an installation section, and the port of the installation section forms the discharge port; the installation section is connected to a sealing cover, which includes a connecting cylinder, an end plate and a force-applying part. The connecting cylinder is threadedly connected to the installation section, and a first medium through hole is provided on the connecting cylinder so that the medium flows out from the first medium through hole during installation to reduce the outward impact of the medium on the sealing cover; as the connecting cylinder is tightened into the installation section, the first medium through hole is gradually blocked by the installation section to achieve medium interception.

2. The Y-type filter according to claim 1, characterized in that: The mounting section is further provided with a mounting seat on the outside, a first external thread structure is provided on the outside of the mounting section, a stepped hole is provided on the inside of the mounting seat, a first internal thread structure that cooperates with the first external thread structure is provided on the inner wall of the large-diameter section of the stepped hole, a second internal thread structure is provided on the inner wall of the small-diameter section of the stepped hole, and the step surface is used to seal with the end face of the mounting section; a third internal thread structure is provided inside the mounting section, and a second external thread structure that cooperates with the second and third internal thread structures is provided on the outer side surface of the connecting cylinder; a second medium through hole is provided on the hole wall of the large-diameter section of the stepped hole; During installation, first, the sealing cover is connected to the mounting seat by screwing the second external thread structure onto the second internal thread structure. At this time, the first medium through hole leaks out of the mounting seat; then, the mounting seat is installed on the mounting section by screwing the first internal thread structure onto the first external thread structure. During the process of installing the mounting seat into place, the medium flows out from the second medium through hole until the second medium through hole is gradually blocked by the mounting section to intercept the medium, and the mounting seat is installed in place; then, the sealing cover is screwed by the force-applying part. During the process of tightening the sealing cover, the medium flows out from the first medium through hole until the first medium through hole is gradually blocked by the mounting seat and the mounting section to intercept the medium, and the installation of the sealing cover is completed.

3. The Y-type filter according to claim 2, characterized in that: The aperture of the second medium through hole is larger than the aperture of the first medium through hole.

4. The Y-type filter according to claim 2, characterized in that: A sealing structure is provided between the end plate portion of the sealing cover and the end surface of the mounting seat.

5. The Y-type filter according to any one of claims 2 to 4, characterized in that: There are a plurality of first medium through holes which are evenly spaced and distributed along the circumference, and the apertures of the first medium through holes are the same.

6. The Y-type filter according to claim 5, characterized in that: There are a plurality of second medium through holes which are evenly spaced and distributed along the circumference, and each second medium through hole has the same aperture.

7. The Y-type filter according to claim 6, characterized in that: The first medium through hole and the second medium through hole are both circular holes.

8. The Y-shaped filter according to claim 6, characterized in that: The number of the first medium through holes and the number of the second medium through holes are both 6.

9. The Y-shaped filter according to claim 1, characterized in that: The force applying portion is a regular hexagonal protrusion.

Images