A plumbing filter device for water supply and drainage

Abstract

This utility model relates to the field of water supply and drainage pipeline technology, and discloses a pipeline filtration device for water supply and drainage, including an inlet pipe, a connecting pipe, a filter cylinder, and an outlet pipe. It can achieve efficient water filtration. The inner walls of both ends of the filter cylinder have internal threads, which engage with the connecting thread cylinder at one end of the connecting pipe to complete the initial fixation. The flange connecting plate at the other end of the connecting pipe is fixed to the flange connecting plate of the inlet pipe and the outlet pipe by bolts to form a complete water flow path. The filter cylinder has symmetrical fixing rings on both sides inside, which respectively engage the first filter screen and the second filter screen with different apertures to achieve graded filtration. The fixing rings slide with the positioning groove on the inner wall of the filter cylinder through the first clamping head, combined with the fit and positioning of the first spring and the inner positioning ring, and the fixation of the front end of the second clamping head and the second spring. The water flows into the filter cylinder through the inlet pipe, passes through the two-stage filter screens in sequence, and flows out from the outlet pipe. It has good filtration effect and strong stability.

Description

Technical Field

[0001] This utility model relates to the field of water supply and drainage pipeline technology, specifically to a water supply and drainage pipeline filtration device. Background Technology

[0002] A drainage pipe filter is a specialized device installed in the pipelines of a water supply and drainage system to intercept impurities in the water and purify the water quality. Its core function is to remove solid impurities such as silt, debris, and suspended solids from the water flow through its internal filtration structure, preventing these impurities from entering subsequent pipelines, valves, pumps, or water-using equipment. During the operation of water supply and drainage systems, whether it is municipal water supply, industrial water, or domestic drainage, the water often carries various impurities. Municipal water supply may contain rust particles caused by aging pipes, industrial water may contain waste residue from the production process, and domestic drainage may contain household garbage debris. If these impurities are not filtered in time, they will gradually accumulate in the pipelines, leading to pipe blockage, reduced water flow, wear on valve seals, damage to pump impellers, and even affecting the normal operation and service life of water-using equipment.

[0003] Traditional water supply and drainage pipeline filtration devices have shortcomings in structural design and maintenance. Most traditional filtration devices use integral welding or complex multi-bolt flange structures for pipeline connections. When cleaning or replacing the internal filter screen, it is necessary to disassemble a large number of connecting parts with special tools, and sometimes even cut parts of the pipeline. This is not only cumbersome but also requires multiple people to complete, resulting in long pipeline disassembly time. At the same time, the internal filter screen of traditional devices is mostly fixed by rigid connection methods such as screws and clips. When removing the filter screen, the fixing parts must be removed first, and some fixing parts are prone to corrosion and jamming after long-term use, further increasing the difficulty of disassembly. In addition, some traditional devices are not designed with convenient positioning and guiding structures, and the position of the new filter screen is prone to displacement, resulting in reduced filtration effect or water leakage. These defects make the filter screen replacement and maintenance of traditional filtration devices inefficient, which not only prolongs the downtime of water supply and drainage systems, affecting normal water supply or drainage processes, but also increases labor and time costs, making it difficult to meet the requirements of modern water supply and drainage systems for convenient and efficient equipment maintenance. Therefore, we propose a pipeline filtration device for water supply and drainage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a pipe filtration device for water supply and drainage, which solves the above-mentioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a pipe filtration device for water supply and drainage, comprising:

[0006] The filter cartridge includes an inlet pipe, a connecting pipe, a filter cylinder, and an outlet pipe. The filter cylinder has connecting pipes threaded at both ends. The connecting pipes at both ends of the filter cylinder are connected by flanges and respectively installed with an inlet pipe and an outlet pipe. A first control valve and a second control valve are respectively installed on the inlet pipe and the outlet pipe.

[0007] The filter cartridge has two retaining rings on both sides inside, which are symmetrically distributed. The first filter screen and the second filter screen are respectively engaged on the inner side of the two retaining rings. The first filter screen is located on the left side inside the filter cartridge.

[0008] Preferably, the inner wall of the filter cylinder is provided with an inner positioning ring on both sides, and a plurality of annularly distributed positioning grooves are provided on the outer side of the inner positioning rings. The positioning grooves are formed on the cylindrical surface of the inner wall of the filter cylinder.

[0009] Preferably, the inner cylindrical surface of the filter cylinder is provided with a plurality of annularly distributed placement grooves. The placement grooves are located between two adjacent positioning grooves and are located outside the inner positioning ring. A second clamp is installed inside the placement groove, and a second spring is provided at the end of the second clamp. The second spring is located inside the placement groove.

[0010] Preferably, a first locking head is provided on the inner side of the outer cylindrical surface of the fixing ring, and a first spring is provided at the end of the first locking head. The first spring is provided on the inner side of the outer cylindrical surface of the fixing ring, and a first filter screen and a second filter screen with different apertures are respectively locked inside the two fixing rings.

[0011] Preferably, the fixing ring is disposed inside the filter cylinder, wherein the first locking head slides in conjunction with the positioning groove, and the back of the fixing ring is tightly fitted with the inner positioning ring, and the front end face of the fixing ring is tightly fitted with the end face of the second locking head.

[0012] Preferably, the internal cylindrical surfaces at both ends of the filter cylinder are provided with internal threads, and one end of the connecting pipe is provided with a connecting threaded cylinder, wherein the two connecting pipes correspond to the two ends of the filter cylinder respectively and the connecting threaded cylinder is engaged with the internal threads.

[0013] Preferably, the other end of the connecting pipe is provided with a flange connecting plate one, and the two ends of the water inlet pipe and the water outlet pipe are respectively provided with flange connecting plates two. The flange connecting plates two of the water inlet pipe and the water outlet pipe are respectively fixedly connected to the flange connecting plates one of the connecting pipes at both ends of the filter cylinder by bolts.

[0014] Compared with the prior art, the present invention provides a pipe filtration device for water supply and drainage, which has the following beneficial effects:

[0015] This water supply and drainage pipeline filtration device first closes the first control valve on the inlet pipe and the second control valve on the outlet pipe to cut off the water flow and prevent leakage during disassembly. Then, the bolts connecting the flanges of the inlet and outlet pipes to the connecting pipe are removed. The flange connecting discs of the inlet and outlet pipes and the connecting pipe are fixed with bolts. After removing the bolts, the inlet and outlet pipes can be separated from the connecting pipe. Next, the connecting pipe is rotated, and the threaded sleeve at one end of the connecting pipe is used to detach it from the filter cylinder by engaging with the internal threads on both ends of the filter cylinder. Finally, the openings at both ends of the filter cylinder are opened, creating space for the subsequent removal of the internal filter screen. The entire pipeline disassembly process is simple and efficient, and can be completed by a single person. Meanwhile, the fixing and removal of the filter screen inside the filter cylinder relies on a flexible snap-fit ​​structure, requiring no additional fasteners, making replacement quick and convenient. The first and second filter screens are respectively snapped into the inner sides of two symmetrically distributed retaining rings. The retaining rings are secured by the cooperation of the first and second locking heads with the inner wall structure of the filter cylinder. The first locking head is engaged in the positioning groove under the action of the first spring, and the second locking head is attached to the front end face of the retaining ring under the action of the second spring. When replacing the filter screen, simply press the second locking head into the filter cylinder to compress the second spring, causing the second locking head to disengage from the retaining ring. Then, push the retaining ring to allow the first locking head to slide along the positioning groove, while simultaneously compressing the first spring, thus removing the retaining ring from the filter cylinder. Afterward, the old first or second filter screen can be directly removed from the inside of the retaining ring. After replacing the new screen, the retaining ring is reinstalled into the filter cylinder in reverse order. The entire filter screen replacement process does not require disassembling the retaining ring itself, resulting in fewer operation steps, higher replacement efficiency, and effectively reducing downtime for equipment maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the structural breakdown of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the filter cartridge structure of this utility model.

[0020] In the diagram: 1. Inlet pipe; 2. First control valve; 3. Connecting pipe; 4. Fixing ring; 5. First filter screen; 6. Second filter screen; 7. First clamp; 8. First spring; 9. Filter cylinder; 10. Outlet pipe; 11. Second control valve; 12. Second clamp; 13. Second spring; 14. Inner positioning ring; 15. Positioning groove; 16. Connecting threaded cylinder. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 A pipe filtration device for water supply and drainage, comprising:

[0023] The filter cartridge 9 and the outlet pipe 1 are connected by a connecting pipe 3, and the filter cartridge 9 is threaded to both ends of the connecting pipe 3. The connecting pipe 3 at both ends of the filter cartridge 9 is connected by flanges to install the inlet pipe 1 and the outlet pipe 10 respectively. The inlet pipe 1 and the outlet pipe 10 are respectively equipped with a first control valve 2 and a second control valve 11.

[0024] The filter cylinder 9 has two fixing rings 4 located on both sides inside. The two fixing rings 4 are symmetrically distributed. The first filter screen 5 and the second filter screen 6 are respectively attached to the inner side of the two fixing rings 4. The first filter screen 5 is located on the left side inside the filter cylinder 9.

[0025] Furthermore, the inner wall of the filter cylinder 9 is provided with an inner positioning ring 14 in a circular shape on both sides. Multiple annularly distributed positioning grooves 15 are provided on the outer side of the inner positioning ring 14. The positioning grooves 15 are opened on the cylindrical surface of the inner wall of the filter cylinder 9, providing a positioning reference and sliding guide channel for the subsequent installation of the fixing ring 4, ensuring that the fixing ring 4 can be accurately embedded in the corresponding position inside the filter cylinder 9.

[0026] Furthermore, the inner cylindrical surface of the filter cylinder 9 is provided with multiple annularly distributed placement grooves. The placement grooves are located between two adjacent positioning slide grooves 15 and outside the inner positioning ring 14. A second locking head 12 is installed inside the placement groove. A second spring 13 is provided at the end of the second locking head 12. The second spring 13 is located inside the placement groove. With the help of the elastic force of the second spring 13, the second locking head 12 can be pushed out of the placement groove, providing front-end limiting support for the subsequent fixing ring 4 and preventing the fixing ring 4 from shifting.

[0027] Furthermore, a first locking head 7 is provided on the inner side of the outer cylindrical surface of the fixing ring 4, and a first spring 8 is provided at the end of the first locking head 7. The first spring 8 is located on the inner side of the outer cylindrical surface of the fixing ring 4. The two fixing rings 4 respectively engage a first filter screen 5 and a second filter screen 6 with different pore sizes. The first spring 8 can provide elastic clamping force for the first locking head 7. At the same time, the filter screens with different pore sizes can achieve graded filtration and improve the water filtration effect.

[0028] Furthermore, the fixing ring 4 is set inside the filter cylinder 9, wherein the first locking head 7 slides and engages with the positioning groove 15, and the back of the fixing ring 4 is tightly fitted with the inner positioning ring 14, and the front end face of the fixing ring 4 is tightly fitted with the end face of the second locking head 12. Through the multiple engagement structure, the fixing ring 4 is stably installed inside the filter cylinder 9, avoiding the displacement of the fixing ring 4 and the filter screen it is engaged by water flow impact, thus ensuring stable filtration.

[0029] Furthermore, the internal cylindrical surfaces at both ends of the filter cylinder 9 are provided with internal threads, and one end of the connecting pipe 3 is provided with a connecting threaded cylinder 16. The two connecting pipes 3 correspond to the two ends of the filter cylinder 9 respectively, and the connecting threaded cylinder 16 is engaged with the internal threads to realize the quick disassembly and initial fixation of the connecting pipe 3 and the filter cylinder 9, laying the foundation for the subsequent construction of a complete water flow path.

[0030] Furthermore, the other end of the connecting pipe 3 is provided with a flange connecting plate 1, and the two ends of the inlet pipe 1 and the outlet pipe 10 are respectively provided with flange connecting plates 2. The flange connecting plates 2 of the inlet pipe 1 and the outlet pipe 10 are respectively connected to the flange connecting plates 1 of the connecting pipe 3 at both ends of the filter cylinder 9 by bolts, so as to ensure that the connection between the inlet pipe 1, the connecting pipe 2, the filter cylinder 9 and the outlet pipe 10 is tight, forming a sealed and stable water flow path to prevent water leakage.

[0031] Structural Description:

[0032] Water inlet pipe 1: This is the water inlet channel of the device. One end is connected to pipe 3 via a flange connection plate. It is equipped with a first control valve 2, which can transport water to be filtered and provide water input for the filtration process.

[0033] First control valve 2: Installed on water inlet pipe 1, it can control the water inlet status. When disassembled, it can be closed to cut off the water flow, prevent water leakage, and ensure operational safety.

[0034] Connecting pipe 3: One end is equipped with a connecting threaded cylinder 16 to filter cylinder 9, and the other end is flanged to connect the inlet and outlet water pipes. It is a key component for connecting the pipes and the filter cylinder.

[0035] Fixed retaining rings 4: symmetrically distributed on both sides inside the filter cylinder 9, with the inner side snapping into the filter screen and the outer side having a first retaining head 7, which can fix the filter screen and achieve its stable installation.

[0036] First filter screen 5: It is snapped into the left fixing ring 4. Its aperture is different from that of the second filter screen 6. It first intercepts larger impurities in the water to achieve primary filtration.

[0037] The second filter screen 6 is snapped into the right-side fixing ring 4. It has a smaller aperture and further filters out fine impurities in the water. It works with the first filter screen to achieve graded filtration.

[0038] First clip 7: On the inner side of the outer cylindrical surface of the fixed clip 4, a first spring 8 is connected, which can cooperate with the positioning slide groove 15 to assist in the positioning and installation of the fixed clip 4;

[0039] First spring 8: Installed inside the fixing ring 4 and at the end of the first clamping head 7, it can provide elastic clamping force to the first clamping head 7 to ensure that it is stably clamped in the positioning slide groove 15;

[0040] Filter cartridge 9: This is the core filtration component. It has connecting pipes 3 at both ends and inner positioning rings 14 on the inner wall, which provide installation space and fixing structure for components such as filter screens.

[0041] Water outlet pipe 10: One end of the flange is connected to the connecting pipe 3, and a second control valve 11 is provided, which can deliver filtered clean water and complete the drainage process;

[0042] Second control valve 11: Installed on water outlet pipe 10, it can control the water outlet status and adjust the water flow rate and on / off state as needed.

[0043] Second clamp 12: Inside the placement slot of filter cylinder 9, connected to the second spring 13, it can fit against the front end face of the fixing ring 4 to provide front end limit;

[0044] The second spring 13 is installed in the groove of the filter cylinder 9 and at the end of the second clamp 12. It can push the second clamp 12 out to achieve the limiting support of the fixed clamp 4.

[0045] Inner positioning ring 14: It is circular on both sides of the inner wall of the filter cylinder 9, and has a positioning groove 15 on the outer side, which provides a positioning reference for the installation of the fixing ring 4;

[0046] Positioning groove 15: Located on the cylindrical surface of the inner wall of the filter cylinder 9 and on the outer side of the inner positioning ring 14, it can slide and cooperate with the first clamping head 7 to provide guidance for fixing the clamping ring 4;

[0047] Threaded connecting sleeve 16: At one end of the connecting pipe 3, it can be threaded with the internal thread of the filter sleeve 9 to realize the threaded connection and disassembly of the connecting pipe and the filter sleeve.

[0048] Working Principle: First, the pipe connections of the device provide a basic channel for water flow. Internal threads are formed on the cylindrical surfaces at both ends of the filter cylinder 9, and a threaded connecting sleeve 16 is provided at one end of the connecting pipe 3. During installation, the two connecting pipes 3 correspond to the two ends of the filter cylinder 9, respectively. The threaded connecting sleeve 16 engages with the internal threads of the filter cylinder 9 to achieve initial fixation between the connecting pipe 3 and the filter cylinder 9. Simultaneously, a flange connecting plate one is provided at the other end of the connecting pipe 3, and flange connecting plates two are provided at both ends of the inlet pipe 1 and outlet pipe 10. The flange connecting plates two of the inlet pipe 1 and outlet pipe 10 correspond to the flange connecting plates one of the connecting pipes 3 at both ends of the filter cylinder 9, and are then fixed together with bolts, ultimately forming a complete water flow path to ensure stable water flow. The water is transported in a pipeline. Before the water flows into the device, the inlet water state can be controlled by the first control valve 2 on the inlet pipe 1, and the outlet water state is controlled by the second control valve 11 on the outlet pipe 10. The two control valves can flexibly adjust the flow and flow rate of the water according to the actual filtration requirements. When the water flows into the filter cylinder 9 from the inlet pipe 1, it will first flow into the filter cylinder 9. The filtration structure inside the filter cylinder 9 is the key to achieving water filtration. There are two fixing rings 4 on both sides inside the filter cylinder 9. The two fixing rings 4 are symmetrically distributed and respectively clamp the first filter screen 5 and the second filter screen 6. The first filter screen 5 is located on the left side inside the filter cylinder 9. The two filter screens adopt different pore sizes to achieve graded filtration and improve the filtration effect. The fixing rings 4 are used in the process of... Stable installation within the filter cartridge 9 relies on a multi-positioning and fixing structure. The inner wall of the filter cartridge 9 has two annular inner positioning rings 14 on each side. Multiple annularly distributed positioning grooves 15 are formed on the outer side of the inner positioning rings 14. These positioning grooves 15 are located on the cylindrical surface of the inner wall of the filter cartridge 9. Simultaneously, a first locking head 7 is provided on the inner side of the outer cylindrical surface of the fixing ring 4. A first spring 8 is located at the end of the first locking head 7 and is positioned on the inner side of the outer cylindrical surface of the fixing ring 4. When installing the fixing ring 4, it is placed inside the filter cartridge 9, allowing the first locking head 7 to slide against the positioning groove 15. The first spring 8 exerts an elastic force on the first locking head 7, ensuring that the first locking head 7 is stably locked within the positioning groove 15. Meanwhile, the fixing ring 4... The back side fits tightly against the inner positioning ring 14, achieving initial positioning. Furthermore, the inner cylindrical surface of the filter cylinder 9 has multiple annularly distributed placement grooves located between two adjacent positioning slides 15 and outside the inner positioning ring 14. A second locking head 12 is installed inside the placement groove, and a second spring 13 is located at the end of the second locking head 12, also inside the placement groove. After the fixing ring 4 is initially positioned, the second spring 13 pushes the second locking head 12, causing the end face of the second locking head 12 to fit tightly against the front face of the fixing ring 4, further securing the fixing ring 4 and preventing displacement under water flow impact. This ensures that the first filter screen 5 and the second filter screen 6 can stably perform their filtering function. After water enters the filter cylinder 9...The water first passes through the first filter screen 5 on the left, where larger particles are intercepted. Then, the water flows to the second filter screen 6 on the right, where smaller particles are further filtered. The clean water, after two stages of filtration, flows through the connecting pipe 3 on the right side of the filter cylinder 9 into the outlet pipe 10. Finally, under the control of the second control valve 11, it flows out of the outlet pipe 10, completing the entire filtration process.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe filter device for water supply and sewerage, characterized by, include: The filter cylinder (9) has an inlet pipe (1), a connecting pipe (3), a filter cylinder (9), and an outlet pipe (10). The filter cylinder (9) has connecting pipes (3) threaded at both ends. The connecting pipes (3) at both ends of the filter cylinder (9) are connected by flanges to install the inlet pipe (1) and the outlet pipe (10) respectively. The inlet pipe (1) and the outlet pipe (10) are respectively equipped with a first control valve (2) and a second control valve (11). Fixing rings (4) are set on both sides inside the filter cylinder (9). The two fixing rings (4) are symmetrically distributed. The first filter screen (5) and the second filter screen (6) are respectively attached to the inner side of the two fixing rings (4). The first filter screen (5) is set on the left side inside the filter cylinder (9).

2. The water supply and drainage pipe filtering device according to claim 1, characterized in that, The filter cylinder (9) has an inner positioning ring (14) in the shape of a ring on both sides of its inner wall. Multiple positioning grooves (15) are provided on the outer side of the inner positioning ring (14). The positioning grooves (15) are provided on the cylindrical surface of the inner wall of the filter cylinder (9).

3. The water supply and drainage pipe filtering device according to claim 2, wherein The inner cylindrical surface of the filter cylinder (9) is provided with multiple annularly distributed placement grooves. The placement grooves are located between two adjacent positioning slides (15) and outside the inner positioning ring (14). A second clamp (12) is installed inside the placement groove. A second spring (13) is provided at the end of the second clamp (12). The second spring (13) is located inside the placement groove.

4. The water supply and drainage pipe filtering device according to claim 1, wherein The inner side of the outer cylindrical surface of the fixed ring (4) is provided with a first clamping head (7), and the end of the first clamping head (7) is provided with a first spring (8). The first spring (8) is located on the inner side of the outer cylindrical surface of the fixed ring (4). The two fixed rings (4) are respectively fitted with a first filter screen (5) and a second filter screen (6) with different apertures.

5. The water supply and drainage pipe filtering device according to claim 4, wherein The fixing ring (4) is set inside the filter cylinder (9), wherein the first locking head (7) slides in cooperation with the positioning groove (15), and the back of the fixing ring (4) is tightly fitted with the inner positioning ring (14), and the front end face of the fixing ring (4) is tightly fitted with the end face of the second locking head (12).

6. The water supply and drainage pipe filtering device according to claim 1, wherein The filter cylinder (9) has internal threads on its inner cylindrical surfaces at both ends, and a connecting threaded cylinder (16) is provided at one end of the connecting pipe (3). The two connecting pipes (3) correspond to the two ends of the filter cylinder (9) respectively, and the connecting threaded cylinder (16) is engaged with the internal threads.

7. The water supply and drainage pipe filtering device according to claim 6, wherein The other end of the connecting pipe (3) is provided with a flange connecting plate one, and the two ends of the water inlet pipe (1) and the water outlet pipe (10) are respectively provided with flange connecting plates two. The flange connecting plates two of the water inlet pipe (1) and the water outlet pipe (10) are respectively connected to the flange connecting plates one of the connecting pipes (3) at both ends of the filter cylinder (9) by bolts.

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