A Y-shaped filter device

Abstract

The utility model provides a kind of Y-shaped filtering device, including four-way pipe fittings, four-way pipe fittings have four intercommunication ports distributed in cross shape, wherein two adjacent intercommunication ports are respectively connected with elbow, and other two intercommunication ports are respectively connected with cover body, four-way pipe fittings are equipped with tubular filter screen pipe, two ends of filter screen pipe are respectively connected with coaxial corresponding two intercommunication ports adaptation connection.The shell of the Y-shaped filtering device of the application is connected by one four-way pipe fitting and two elbows, and the four-way pipe fitting and the elbow are both common and relatively regular pipe fittings, compared with the special-shaped structure of the A position of the installation position of the filter screen pipe in the background art, the manufacturing difficulty is lower, so the manufacturing difficulty of the shell is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fluid filtration equipment technology, specifically to a Y-shaped filtration device. Background Technology

[0002] Y-type filters, as an important fluid filtration device, are widely used to intercept impurities, particles, and other foreign objects in fluids to protect downstream pipelines, valves, pumps, and other critical equipment from wear, blockage, or damage, thereby ensuring the stable operation and service life of the entire fluid system.

[0003] In the prior art, patent application publication number CN 120022663 A discloses an adjustable Y-type filter. (Reference) Figure 1 As shown.

[0004] To achieve a stable fit and installation with the insertable annular filter tube, a special structural design and processing are required for position A on the housing, corresponding to the filter tube's installation location. This special design for position A increases the complexity of the housing mold design; simultaneously, during the housing processing stage, this special structure places higher demands on machining accuracy. For example, additional processing steps such as precision milling, grinding, or secondary forming are needed to ensure the dimensional accuracy of the fit between position A and the annular filter tube, which undoubtedly significantly increases the manufacturing difficulty of the housing. Utility Model Content

[0005] In view of the problems pointed out in the background art, this utility model proposes a Y-shaped filter device to solve the above-mentioned technical problems and reduce the difficulty of shell manufacturing.

[0006] The technical solution of this utility model is implemented as follows: A Y-shaped filter device includes a four-way fitting with four cross-shaped connecting ports. Two adjacent connecting ports are connected to bends, and the other two connecting ports are connected to caps. A tubular filter screen is installed inside the four-way fitting, and the two ends of the filter screen are adapted and connected to two coaxially corresponding connecting ports.

[0007] The present invention is further configured such that the bent pipe is detachably connected to the four-way pipe fitting via a flange.

[0008] The present invention is further configured such that the cover is threadedly connected to the four-way pipe fitting.

[0009] The present invention is further provided that the cover is provided with a drain port, and the drain port is connected with a drain bolt.

[0010] The present invention is further configured such that the four-way fitting is a hollow spherical structure, and a connecting pipe is connected to the connecting port.

[0011] The present invention is further configured such that the outer diameter of the filter screen is equal to the inner diameter of the connecting pipe.

[0012] The present invention is further configured such that the ports of the two bends away from the four-way fitting are coaxially arranged.

[0013] The present invention is further configured such that a positioning post is provided on the inner side of the cover, the diameter of the positioning post is equal to the inner diameter of the filter screen tube, the drain outlet is provided through the positioning post, and a drain groove with a concave diameter that gradually decreases is provided on the end face of the positioning post facing the filter screen tube, the drain groove and the drain outlet are coaxial.

[0014] The present invention is further configured such that a flange is provided on the connecting pipe connected to the bend, and a corresponding flange is also provided on the bend.

[0015] The present invention is further provided that the connecting pipe connected to the cover is provided with external threads.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows: The housing of the Y-shaped filter device of this application is composed of a four-way pipe and two bends. Both the four-way pipe and the bends are common and relatively regular pipe fittings. Compared with the irregular structure of position A of the filter screen installation location in the prior art, the manufacturing difficulty is lower, thus reducing the manufacturing difficulty of the housing.

[0017] The shell formed by the four-way fitting has four connecting ports arranged in a cross shape, which allows the filter network to have two installation directions, improving the applicability and installation options of the product.

[0018] In the use of the filtration device of this application, one of the connecting ports of the cover is in an idle state. This connecting port can remain idle, or it can be connected to another pipe for liquid discharge, or it can be used as a detection port for the filtered liquid.

[0019] The positioning posts on the inner side of the cover can further restrict and position the filter network. At the same time, the drain groove formed on the positioning posts has a curved structure, which helps the debris in the filter network to move to the drain outlet after the drain port is opened, and avoids the problem of debris being difficult to discharge due to the presence of a 90-degree right angle. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the existing technology Figure 2 This is a schematic diagram of the structure of this utility model.

[0022] Figure 3 This is an exploded view of the present invention.

[0023] Figure 4 This is a cross-sectional view of the present invention.

[0024] Figure 5 This utility model Figure 4 Enlarged view of part A in the image.

[0025] The following are the labels in the attached diagram: 1. Four-way fitting; 2. Connecting port; 3. Bend; 4. Cover; 5. Filter screen; 6. Flange; 7. Drain outlet; 8. Drain bolt; 9. Connecting pipe; 10. Positioning post; 11. Drain trough. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] For reference as follows Figures 1-5 The present invention will be described as follows: Example: A Y-shaped filter device includes a four-way fitting 1, which has four cross-shaped connecting ports 2.

[0028] The two adjacent connecting ports 2 are respectively connected to bends 3, serving as the inlet and outlet for the fluid.

[0029] The other two connecting ports 2 are respectively connected to the cover 4, which can be opened and closed.

[0030] The four-way fitting 1 is equipped with a tubular filter screen 5, and the two ends of the filter screen 5 are respectively adapted and connected to two coaxial corresponding connecting ports 2.

[0031] The filtration path has one bend 3 into which the liquid enters, then enters the filter screen 5, and after being filtered by the filter screen 5, it enters the four-way fitting 1, and then exits through another bend 3.

[0032] The Y-shaped filter device of this application abandons the prior art approach of designing irregular structures at specific locations on the shell to accommodate circular annular filter screens. Instead, it adopts a combined structure of "four-way pipe fitting 1 + two bends 3" to form the main body of the shell. The four-way pipe fitting 1 is a standard pipe fitting with a regular tubular structure having four cross-shaped connecting ports 2. It can be mass-produced using conventional pipe forming processes (such as casting, injection molding, or pipe processing) without the need to develop special molds for specific fitting structures. The bends 3 are also common standard pipe fittings in the industrial field. Their bending angle and pipe diameter specifications have mature production standards and processing technologies, and they can be directly purchased or processed using conventional pipe bending equipment.

[0033] During the shell assembly stage, the two bends 3 only need to be fixed to the two adjacent connecting ports 2 on the four-way fitting 1 using conventional connection methods such as welding, threaded connection, or flange connection. Compared to the prior art, which requires precision machining of position A of the shell to form an irregular structure adapted to the annular filter screen, the shell components of this application are all regular pipe fittings, with a simple structure and high degree of standardization, requiring no additional special processing steps to handle irregular adaptation structures. This design fundamentally simplifies the shell manufacturing process, reduces the requirements for the precision of processing equipment and operating technology, and thus significantly reduces the overall manufacturing difficulty of the shell.

[0034] The four-way fitting 1, as the core component of the housing, has four connecting ports 2 arranged in a cross shape. This structural feature provides two different installation directions for the filter screen tube 5. Specifically, the filter screen tube 5 is a tubular structure, and its installation method involves each end being adapted and connected to two coaxially corresponding connecting ports 2 on the four-way fitting 1. Since the four connecting ports 2 of the four-way fitting 1 are arranged in a cross shape, there are two sets of coaxial connecting ports 2 (i.e., two connecting ports 2 distributed along the transverse axis of the cross are one set, and two connecting ports 2 distributed along the longitudinal axis are another set). The filter screen tube 5 can be connected to either the two connecting ports 2 along the transverse axis or the two connecting ports 2 along the longitudinal axis.

[0035] This selectable installation method allows the Y-shaped filter device of this application to flexibly adjust the installation orientation of the filter mesh 5 according to the spatial layout, pipeline routing, and fluid filtration requirements of the actual installation scenario, thereby adapting to different pipeline connection needs. For example, in scenarios with limited pipeline layout space, an installation direction that better fits the existing pipeline routing can be selected, avoiding problems such as increased pipeline modification costs or insufficient installation space caused by a fixed installation direction of the filter device. Therefore, the dual installation direction selection provided by the two sets of coaxial connection ports 2 effectively improves the applicability and installation flexibility of the product in different application scenarios.

[0036] During normal operation of the filtration device, since the filter screen 5 is only connected to one set of coaxial communication ports 2 to achieve fluid filtration, one of the two communication ports 2 connecting the cover 4 must be in an idle state. This idle communication port 2 can be flexibly expanded in function according to actual usage needs, specifically in the following three aspects: Firstly, it can be kept idle. When the filter device only needs to meet the basic filtration function, the idle connection port 2 can be sealed by the cover 4 to ensure the airtightness of the housing, prevent fluid leakage, and not affect the normal operation of the filter device.

[0037] Secondly, it serves as an additional liquid outlet channel. In scenarios where the filtered fluid needs to be diverted for output, the cover 4 of the unused connection port 2 can be opened and a pipe of the corresponding specification can be connected. This allows part of the filtered fluid to be discharged through the original bend 3, while the other part is diverted through the pipe connected to the unused connection port 2, achieving a single-inlet, dual-outlet fluid delivery mode to meet multi-path liquid supply needs.

[0038] Thirdly, it serves as a filtrate testing port. When it is necessary to test the purity, composition, and other indicators of the filtered fluid, the cover 4 of the unused connecting port 2 can be opened, and a sample of the filtered fluid inside the housing can be directly collected through the connecting port 2. This eliminates the need to disassemble the filtration device or interrupt the filtration process, simplifying the testing operation and improving testing efficiency. At the same time, the filtration effect can be monitored in real time, making it easier to detect and deal with filtration abnormalities in a timely manner.

[0039] The four-way fitting 1 has a hollow spherical structure, which has significant advantages in internal space morphology compared with traditional tubular or columnar four-way structures. When liquid enters the filter screen tube 5 through one of the bends 3, and after filtration, seeps out through the wall of the filter screen tube 5 into the interior of the four-way fitting 1, the hollow spherical structure allows a large-volume spacer cavity to be formed between the outer wall of the filter screen tube 5 and the inner wall of the four-way fitting 1.

[0040] This large, spaced cavity firstly provides ample temporary storage and buffering space for the filtered liquid, preventing localized stagnation or pressure buildup due to limited space after seepage. Secondly, the larger cavity volume significantly reduces the flow resistance of the filtered liquid inside the four-way fitting 1, allowing the liquid to diffuse more smoothly within the cavity and converge at the inlet of the other bend 3. Simultaneously, the inner wall of the hollow spherical structure has an arc-shaped transition, without obvious sharp edges or protrusions, effectively reducing eddy currents in the filtered liquid during flow, further optimizing the fluid flow path, thereby promoting the rapid and efficient discharge of the filtered liquid through the other bend 3, and improving the overall fluid transport efficiency of the filtration device.

[0041] Four connecting ports 2 are each connected to a connecting pipe 9. The connecting pipe 9 serves as a transition structure for connecting the four-way fitting 1 to external components (bend 3, cover 4, filter screen 5). The connection between the connecting pipe 9 and the four-way fitting 1 can be fixed by welding or other methods to form a rigid connection structure.

[0042] The elbow 3 is detachably connected to the four-way fitting 1 via flange 6. The specific connection method is as follows: the connecting pipe 9 connected to the elbow 3 is provided with flange 6, and the elbow 3 is also provided with a corresponding flange 6. The two flanges 6 are fastened together by bolts, nuts and other fasteners.

[0043] The cover 4 is threadedly connected to the four-way fitting 1. The connecting pipe 9 connected to the cover 4 has external threads. The inner wall of the cover 4 has corresponding internal threads.

[0044] The outer diameter of the filter screen tube 5 is equal to the inner diameter of the connecting pipe 9. This dimensional design ensures a tight fit between the two. During installation, both ends of the filter screen tube 5 can be directly inserted into the corresponding connecting pipe 9, forming an interference or transition fit structure. From a sealing perspective, the tight fit effectively reduces the gap between the filter screen tube 5 and the connecting pipe 9, preventing unfiltered liquid from flowing directly into the four-way fitting 1 through the gap. This ensures that all liquid entering the filter screen tube 5 must be filtered before seeping out, guaranteeing the reliability of the filtration effect.

[0045] The tight fit between the filter screen tube 5 and the connecting pipe 9 provides good support and fixation for the filter screen tube 5, preventing it from shaking, shifting, or falling off under the impact of fluid, ensuring that the filter screen tube 5 is always in the correct working position, and improving the stability of the filtration device.

[0046] The two bends 3 are coaxially positioned at the ends furthest from the four-way fitting 1. This design is primarily aimed at the connection requirements of external piping systems, enabling the filter device of this application to achieve precise docking with external straight piping systems. Installation can be completed without additional bends or adjustments to the pipe routing, greatly simplifying the connection process with external pipes and reducing the complexity and cost of pipe installation.

[0047] The cover 4 is equipped with a drain port 7, which is threadedly connected to a drain bolt 8. By unscrewing the drain bolt 8, wastewater can be drained through the drain port 7. During normal operation of the filter device, the drain bolt 8 engages with the drain port 7, sealing it and ensuring the cover 4's airtightness. This prevents fluid leakage from the drain port 7 and ensures the normal operation of the filtration process. After the filter device has been running for a period of time, debris, particles, and other foreign objects will accumulate inside the filter screen 5. At this time, a draining operation is required: by rotating and removing the drain bolt 8, the drain port 7 is opened, allowing the debris inside the filter screen 5 to be discharged through the drain port 7, thus cleaning the filter screen 5 and preventing blockage that could affect filtration efficiency.

[0048] The inner side of the cover 4 is provided with a positioning post 10. The diameter of the positioning post 10 is equal to the inner diameter of the filter tube 5. The drain outlet 7 is set through the positioning post 10. The end face of the positioning post 10 facing the filter tube 5 is provided with a concave drain groove 11 with a gradually decreasing diameter. The drain groove 11 is coaxial with the drain outlet 7.

[0049] The positioning post 10 can further restrict and position the filter tube 5, forming a double fixing structure with the installation method of inserting connecting pipes 9 at both ends of the filter tube 5. The diameter of the positioning post 10 is equal to the inner diameter of the filter tube 5. After the cover 4 is connected and fixed to the four-way fitting 1, the positioning post 10 can be inserted into the port of the filter tube 5, forming a tight fit with the inner wall of the filter tube 5.

[0050] The drain trough 11 has a concave curved surface structure (its gradually decreasing diameter gives it a funnel-shaped surface), without 90-degree right angles or other sharp edges. When the drain outlet 7 is opened for sewage discharge, debris inside the filter screen 5 moves towards the drain outlet 7 under the influence of gravity or fluid scouring force. The curved surface structure of the drain trough 11 guides the debris: due to the smooth transition of the curved surface, the debris can slide smoothly along the surface without being stopped by right angles. At the same time, the gradually decreasing diameter design causes the drain trough 11 to tend to converge towards the drain outlet 7, and the debris will gradually concentrate towards the drain outlet 7 during its movement, further improving the discharge efficiency.

[0051] Compared to traditional sewage discharge structures that may contain right angles or flat surfaces, such structures easily create "dead corners" where debris can accumulate, causing some debris to get stuck at the right angles and be difficult to discharge. Over time, this accumulation can affect the sewage discharge effect and even cause blockage of the drain outlet 7. In contrast, the sewage discharge tank 11 of this application, through its curved surface and variable diameter design, eliminates "dead corners" in the sewage discharge path, ensuring that debris can be discharged quickly and thoroughly through the drain outlet 7. This improves the thoroughness of sewage discharge and reduces the risk of secondary blockage of the filter screen 5 due to debris residue.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A Y-shaped filter device comprising a four-way pipe fitting having four communication ports distributed in a cross shape, characterized in that: Two adjacent connecting ports are connected to bends, and two other connecting ports are connected to covers. The four-way fitting contains a tubular filter screen, and the two ends of the filter screen are adapted and connected to two coaxial corresponding connecting ports.

2. A Y-shaped filter device according to claim 1, characterized in that: The bend is connected to the four-way fitting via a flange to form a detachable connection.

3. A Y-shaped filter device according to claim 1, characterized in that: The cover is threadedly connected to the four-way pipe fitting.

4. A Y-shaped filter device according to claim 1, characterized in that: The cover is provided with a drain outlet, which is connected to a drain bolt.

5. A Y-shaped filter device according to claim 1, characterized in that: The four-way fitting has a hollow spherical structure, and a connecting pipe is connected to the connection port.

6. A Y-shaped filter device according to claim 5, characterized in that: The outer diameter of the filter screen is equal to the inner diameter of the connecting pipe.

7. A Y-shaped filter device according to claim 1, characterized in that: The two bends are coaxially positioned at the ports furthest from the four-way fitting.

8. A Y-shaped filter device according to claim 4, characterized in that: The inner side of the cover is provided with a positioning post, the diameter of which is equal to the inner diameter of the filter screen tube. The drain outlet is set through the positioning post. The end face of the positioning post facing the filter screen tube is provided with a concave drain groove with a gradually decreasing diameter. The drain groove is coaxial with the drain outlet.

9. A Y-shaped filter device according to claim 5, characterized in that: The connecting pipe that connects to the bend is equipped with a flange, and the bend is also equipped with a corresponding flange.

10. A Y-shaped filter device according to claim 5, characterized in that: The connecting pipe that connects to the cover has external threads.

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