High performance filter valve

Abstract

The application relates to the technical field of filter valves for water treatment, in particular to a high-performance filter valve which comprises a valve body, a core cylinder and a driving device, the valve body is provided with a water inlet, a water outlet, a blind hole and a drain outlet, the core cylinder is coaxially and rotatably arranged in the inner cavity of the valve body, and the top of the core cylinder is in transmission connection with the driving device; the bottom of the valve body is provided with a first filter core interface and a second filter core interface, the core cylinder is controlled to rotate in the valve body by the driving device, so that the different passage states of the first filter core interface, the second filter core interface, the water inlet, the water outlet and the drain outlet are switched, and the normal operation, backwashing and forward washing functions of the filter valve are realized. The application has the advantages of compact structure, stable operation, simple assembly process, further simplification of the valve body structure, great improvement of the flux performance, significant reduction of the manufacturing cost, improvement of the consistency and the yield of the product.

Description

Technical Field

[0001] This invention relates to the field of filter valve technology for water treatment, and specifically to a high-performance filter valve. Background Technology

[0002] Filter valves for water treatment are key components in water treatment systems, enabling functions such as switching water flow paths, controlling filtration, backwashing, and forward washing. They are widely used in industrial carbon filtration, sand filtration equipment, and household water treatment devices. In existing technologies, common filter valves often employ a planar sealing structure or a multi-chamber structure with moving and fixed valve plates, switching between different water paths through relative rotation to achieve different functions.

[0003] For example, patent "2025116144557" discloses a dual-valve-body filter valve with a roller structure. This solution adopts a first valve body and a second valve body with a double-layer sleeve structure, and independent rollers are rotatably installed in the first valve chamber and the second valve chamber respectively. The rotation of the two rollers is controlled by two drive devices to realize the switching of different water paths.

[0004] However, in practical applications, the aforementioned filter valve is a complex combination of dual valve bodies, dual rollers, and dual drive devices. This results in a large overall size and weight, occupying more installation space and increasing material costs. Furthermore, the two rollers are controlled by independent drive devices, leading to relatively complex control logic and a tendency for poor synchronization and mismatched switching sequences. Any synchronization deviation can cause water circuit chaos, cross-contamination, or even equipment damage. When one valve body or roller malfunctions, the entire dual valve body assembly must be disassembled for repair, making the operation cumbersome and maintenance costs high. In addition, the water flow in this structure still needs to turn multiple times between multiple chambers, resulting in pressure loss and flow resistance, which in turn affects its operational efficiency and the need for low-energy water treatment.

[0005] Therefore, it is necessary to research a high-performance filter valve. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a high-performance filter valve that effectively solves the problems of existing filter valves, such as bulky structure, complex installation and maintenance, high cost, poor control synchronization, and high flow resistance.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-performance filter valve, comprising a valve body, a core cylinder, and a drive device. The valve body is provided with an inlet, an outlet, a blind hole, and a drain outlet. The inlet and outlet are distributed laterally on the left and right sides of the valve body, and the blind hole and drain outlet are distributed longitudinally on the front and rear sides of the valve body. The core cylinder is coaxially rotatably installed in the inner cavity of the valve body, and the top of the core cylinder is drivenly connected to the drive device. The core cylinder includes an outer cylinder and an inner cylinder. The inner cylinder is integrally formed and coaxially disposed inside the outer cylinder, so that the outer cylinder and the inner cylinder are connected to the drive device. An annular cavity is formed between the inner cylinders; the outer cylinder has a first through hole and a second through hole, the first through hole being connected to the inner cylinder and the second through hole being connected to the annular cavity; the bottom of the valve body has a first filter element interface and a second filter element interface, the first filter element interface being connected to the annular cavity and the second filter element interface being connected to the inner cylinder; the core cylinder is controlled to rotate within the valve body by the driving device to switch the different passage states of the first filter element interface and the second filter element interface with the inlet, outlet and drain respectively, thereby realizing the normal operation, backwashing and forward washing functions of the filter valve.

[0008] Furthermore, the valve body is provided with a plug seat, which is a cylindrical structure integrally formed in the middle of the valve body cavity; the top of the plug seat is provided with a boss, and the core cylinder is adapted to be rotatably mounted on the boss, and the core cylinder and the boss are sealed together.

[0009] Furthermore, a second filter element interface is formed at the bottom of the connector, and the first filter element interface is located outside the second filter element interface; the inner and outer walls of the first filter element interface are respectively provided with internal threads and external threads.

[0010] Furthermore, the top of the core cylinder is provided with a top cover, and a bushing is sealed and fixed at the top opening of the valve body. A connecting shaft is provided on the top cover, and the connecting shaft is rotatably sleeved in the bushing. The top end of the connecting shaft extends above the bushing and is connected to the drive device for transmission.

[0011] Furthermore, at least one slot is provided on the outer edge of the top of the core tube along the circumferential direction, and at least one tooth is provided on the bottom of the top cover along the circumference. A cover plate is fixed in the middle of the lower surface of the top cover. When the tooth is fitted into the slot, the top cover and cover plate are fitted and fixedly sealed at the upper opening of the core tube.

[0012] Furthermore, the first through hole and the second through hole are arranged symmetrically at 180 degrees on the outer cylinder.

[0013] Furthermore, the outlet and the drain extend toward the middle of the valve body and contact the outer wall of the core cylinder, and the inlet and the blind hole form a valve cavity interlayer for water passage between the core cylinder and the valve body.

[0014] Furthermore, the valve body has four openings with adjusting members. The end of the adjusting member near the core cylinder is sealed against the outer wall of the core cylinder. The adjusting member located in the water inlet and the blind hole has an adjusting hole that communicates with the valve cavity. By controlling the axial movement of the adjusting member, the effective flow area of ​​the water flowing through the valve cavity can be adjusted.

[0015] Furthermore, the adjusting members are threadedly connected to the corresponding valve body openings, and the adjusting member has a screw end extending to the outside of the valve body on the side away from the core cylinder. By rotating the screw end, the adjusting member can be driven to move axially toward or away from the core cylinder to adjust the sealing tightness between the adjusting member and the outer wall of the core cylinder.

[0016] Furthermore, the filter valve is an injection-molded structure.

[0017] The beneficial effects of the above technical solution are: 1. The present invention provides a high-performance filter valve, which adopts an integrated single valve body structure and a coaxial inner and outer cylinder integrated core structure. The core cylinder can be driven to rotate within the valve body by a single drive device, thereby realizing water circuit switching for all working conditions of filtration, backwashing, and forward washing, significantly improving the stability and reliability of system operation.

[0018] 2. The four openings on the valve body of the present invention adopt a differentiated structure. The adjustment component on the inlet and blind hole side is connected to the valve cavity interlayer, forming a transition flow channel with the valve cavity interlayer. The outlet and drain side only adopt an axial flow path, which optimizes the overall water pressure distribution in the valve body and greatly improves the stability and uniformity of water flow.

[0019] 3. This invention does not require a complex multi-cavity structure. It can achieve rapid switching of water flow path simply by aligning the core tube through hole with different openings. The flow channel layout is simple and clear, avoiding the problems of meandering flow channels and dead corners in traditional filter valves. This reduces the accumulation of impurities in the valve body, greatly reduces the difficulty of backwashing, and effectively improves work efficiency.

[0020] 4. This invention features an adjusting component within the valve body opening. By driving the screw end to move axially, the effective flow area of ​​the adjusting hole on the adjusting component corresponding to the inlet and blind hole can be flexibly adjusted. This allows for precise control of the water flow resistance and sealing pressure within the channel, adapting to flow requirements under different operating conditions. Furthermore, the clear flow channel layout within the valve body ensures that the water flow maintains an optimal flow rate under various operating conditions, significantly reducing local resistance during water flow, thereby reducing system energy consumption and significantly improving the operating efficiency of the water treatment system.

[0021] 5. The present invention has a compact overall structure and a significantly optimized volume. It adopts one-piece injection molding during production, which simplifies the production process, increases the yield rate, greatly reduces manufacturing costs, facilitates later maintenance, and significantly reduces the installation space required in actual applications. It can be adapted to a variety of different usage scenarios, thus broadening the scope of application of the product. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of the filter valve of the present invention; Figure 2 This is a cross-sectional view of the valve body of the present invention; Figure 3 This is a schematic diagram of the assembly state of the valve body and the core cylinder of the present invention; Figure 4 This is a schematic diagram of the external structure of the core cylinder of the present invention; Figure 5 This is a side cross-sectional view of the valve body during normal operation of the filter valve of the present invention; Figure 6 This is a top-section diagram of the valve body during normal operation of the filter valve of the present invention; Figure 7 This is a side cross-sectional view of the valve body in the backwashing mode of the filter valve of the present invention; Figure 8 This is a top-section diagram of the valve body in the backwashing mode of the filter valve of the present invention; Figure 9 This is a side cross-sectional view of the valve body in the forward washing mode of the filter valve of the present invention; Figure 10 This is a top-section diagram of the valve body in the forward washing mode of the filter valve of the present invention; Figure 11 This is a schematic diagram of the implementation structure of the filter valve of the present invention; Figure 12 This is a schematic diagram of an embodiment of the adjusting component of the present invention; Figure 13 This is a front view of the adjusting component of the present invention.

[0023] Reference numerals: 1-Valve body, 101-First filter element interface, 102-Second filter element interface, 103-Plug-in seat, 104-Boss, 105-Valve cavity, 2-Inlet, 3-Outlet, 4-Blind hole, 5-Drain outlet, 6-Drive device, 7-Core cylinder, 701-Outer cylinder, 702-Inner cylinder, 703-Annular cavity, 704-First through hole, 705-Second through hole, 706-Slot, 8-Top cover, 801-Clamping tooth, 802-Connecting shaft, 803-Shaft sleeve, 804-Cover plate, 9-Tank body, 10-Filter layer, 11-Central tube, 12-Lower water distributor, 13-Upper water distributor, 14-Adjusting component, 141-Adjusting hole, 142-Turning end, 143-Sealing ring, 144-Threaded section. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1: This example aims to provide a high-performance filter valve, mainly used in the field of water treatment. In view of the problems of existing filter valves, such as redundant and complex filter valve structure, cumbersome control logic, large overall size and high maintenance cost, this invention proposes a high-performance filter valve with a single valve body structure. By controlling the rotation of the core cylinder in the valve body, different water passages are switched, thereby realizing the normal operation (filtration), backwashing and forward washing functions of the filter valve.

[0025] In the specific implementation structure, such as Figure 1-13 As shown, the high-performance filter valve provided in this embodiment includes a valve body 1, a core cylinder 7, and a drive device 6. The valve body 1 is an integrally injection-molded cylindrical shell. Water inlet 2 and water outlet 3 are respectively opened on the left and right sides along the horizontal direction, and blind hole 4 and drain outlet 5 are respectively opened on the front and rear sides along the longitudinal direction. The water inlet 2, water outlet 3, drain outlet 5 and blind hole 4 are arranged in a cross orthogonal arrangement and are all connected to the inner cavity of the valve body 1. The end of the blind hole 4 is provided with a sealing cap. The water inlet 2, water outlet 3 and drain outlet 5 are respectively sealed and connected to the pipeline to realize different water flow paths.

[0026] Furthermore, the bottom of the valve body 1 is provided with an annular first filter element interface 101, and a cylindrical plug seat 103 is integrally formed in the middle of the inner cavity of the valve body 1. The bottom opening of the plug seat 103 forms a second filter element interface 102, that is, the first filter element interface 101 and the second filter element interface 102 are coaxially spaced apart; and the inner side wall and the outer side wall of the first filter element interface 101 are respectively machined with internal threads and external threads, which are used to seal the valve body 1 to the top of the filter tank 9 through the first filter element interface 101, and to seal the second filter element interface 102 to the central tube 11 inside the tank 9, thereby installing the filter valve on the top of the tank 9.

[0027] like Figure 2-4As shown, in this embodiment, a protruding stepped structure forming a boss 104 is provided on the top of the plug seat located in the inner cavity of the valve body 1. The core cylinder 7 is coaxially and rotatably installed in the inner cavity of the valve body 1, and its bottom is adapted to be rotatably installed on the annular boss 104. An O-ring is provided between the mating surfaces of the core cylinder 7 and the annular boss 104 to achieve sealing. Specifically, in this embodiment, the core cylinder 7 includes an outer cylinder 701 and an inner cylinder 702. The inner cylinder 702 is integrally formed and coaxially disposed in the inner cavity of the outer cylinder 701, so that an annular cavity 703 for water passage is formed between the outer cylinder 701 and the inner cylinder 702. A first through hole 704 and a second through hole 705 are provided on the side wall of the outer cylinder 701. The first through hole 704 is directly connected to the inner cavity of the inner cylinder 702, and the second through hole 705 is directly connected to the annular cavity 703. The first through hole 704 and the second through hole 705 are on the same axis and are opened at 180 degrees on the side wall of the outer cylinder 701.

[0028] like Figure 12 and 13 As shown, since the outer diameter of the core cylinder 7 is smaller than the inner diameter of the valve body cavity, an annular valve cavity 105 sandwich for water passage is formed between the core cylinder 7 and the valve body 1 in this embodiment. In this embodiment, the inlet 2, outlet 3, blind hole 4 and drain 5 of the valve body 1 are all provided with adjusting members 14. The adjusting members 14 extend into the valve cavity 105 and abut against the outer wall of the core cylinder 7. Specifically, in this embodiment, the adjusting member 14 is a hollow columnar structure. The outer wall of the adjusting member 14 is provided with a threaded section 144 for threaded connection with the inner wall of the corresponding valve body 1 opening. This embodiment takes the inlet 2 of the valve body 1 as an example. The end of the adjusting member 14 away from the core cylinder 7 is provided with a screw end 142. The screw end 142 extends out of the valve body inlet, which is convenient for manual adjustment by the operator. The inner wall of the screw end 142 is provided with threads for sealing connection with the water pipe. Multiple adjusting holes 141 are evenly distributed along the circumference on the end face of the adjusting member 14 near the core cylinder 7. The adjusting holes 141 communicate with the valve cavity 105. The end of the adjusting member 14 near the core cylinder 7 has an arc-shaped opening and a sealing ring 143 to seal against the side wall of the core cylinder 7, so as to avoid interference with the core cylinder 7 when it rotates. In this embodiment, the adjusting member 14 is configured in this way. By rotating the screw end 142, the adjusting member 14 can be driven to move axially toward or away from the core cylinder 7. This can simultaneously adjust the effective flow area of ​​the water entering the valve cavity 105 through the adjusting holes 141 and the sealing tightness between the adjusting member 14 and the side wall of the core cylinder 7, thereby adapting to different flow requirements and ensuring the sealing reliability when the water circuit is switched.

[0029] It should be noted that the four radial openings and the working state of the core cylinder in this invention are set differently. Specifically, the outlet 3 and the drain 5 extend into the valve body 1, so that their inner ends are close to the outer circumferential wall of the core cylinder 7. Correspondingly, the inner end face of the adjusting member 14 installed inside the pipeline of the outlet 3 and the drain 5 is sealed and abutted against the outer wall of the core cylinder 7. At this time, the adjusting hole 141 on the adjusting member 14 is covered by the inner wall of the channel of the outlet 3 and the drain 5, leaving only the axial hollow channel of the adjusting member 14 itself as the only flow path. When the adjusting member 14 is rotated by the screw end 142, it can only drive the tightness of the adjusting member 14 located at the outlet 3 and the drain 5. An annular gap is left between the inner end of the inlet 2 and the blind hole 4 and the outer wall of the core cylinder 7. The two together form a valve cavity 105 sandwich that occupies about half of the cross-section of the valve body 1. The adjusting member 14 installed in the inlet 2 and the blind hole 4 has its inner end face sealed to the outer wall of the core cylinder 7, and the adjusting hole 141 is directly connected to the valve cavity 105. Thus, by rotating the adjusting member 14, the flow rate and tightness of the water passing through the adjusting hole 141 can be adjusted adaptively.

[0030] like Figure 1 and 2 As shown, in this embodiment, a top cover 8 is also provided on the top of the core cylinder 7. The top cover 8 is located in the inner cavity of the valve body 1. Annular locking teeth 801 are evenly arranged along the circumferential direction on the bottom end face of the top cover 8. A corresponding locking groove 706 is opened along the circumference on the outer edge of the top of the core cylinder 7. A cover plate 804 is also fixed in the middle of the lower surface of the top cover 10. The cover plate 804 is located between the top cover 10 and the core cylinder 7 and is used to seal the top of the core cylinder, playing a role in water channel isolation and sealing. This allows the locking teeth 801 to be fitted and sealed in the locking groove 706, thus fixing the top cover and the core cylinder together. At the same time, the cover plate 804 is fitted and sealed to the upper opening of the core cylinder, so that the cover plate 804 and the top cover 8 are fixedly sealed on the top of the core cylinder, preventing water from overflowing from the top of the core cylinder 7. Furthermore, in this embodiment, a bushing 803 is fixed at the top opening of the valve body, and the bushing 803 is sealed to the valve body. A connecting shaft 802 is fixed on the top cover 8, and the connecting shaft 802 is rotatably sleeved inside the bushing 803. The top of the connecting shaft 802 extends upward to above the bushing 803 and is connected to the drive device 6. Thus, by controlling the rotation of the connecting shaft 802 through the drive device 6, the core cylinder 7 can be rotated within a 360-degree circumference through the top cover, so that the through hole on the core cylinder 7 connects with the openings at different positions on the valve body 1, realizing the switching of water paths with different connection paths, and thus realizing different functions. In this embodiment, the drive device 6 is a common stepper motor and gear transmission or electric actuator transmission structure, which will not be described in detail here.

[0031] The high-performance filter valve provided by the present invention has a normal operation mode, a backwash mode and a forward wash mode. The core cylinder 7 is controlled to rotate in the inner cavity of the valve body 1 by the drive device 6, so that the through hole on the core cylinder 7 can be connected to or blocked with the openings at different positions on the valve body 1, so as to realize the switching operation of different modes of normal operation, backwash and forward wash functions of the filter valve.

[0032] In practical applications, such as Figure 11 As shown, the filter valve is sealed and installed on the top of the filter tank 9. Water pipes are connected to the inlet 2, outlet 3, and outlet 5 of the filter valve. The first filter element interface 101 on the filter valve is connected to the upper water distributor 13 inside the tank 9, and the second filter element interface 102 is connected to the central pipe 11. The bottom of the central pipe 11 is connected to the lower water distributor 12. The tank 9 is filled with a filter layer 10, such as activated carbon or quartz sand, for purifying the raw water. The specific working process is as follows: (1) Normal operating mode like Figure 5 and 6 As indicated by the middle arrow, during normal operation, the second through hole 705 is aligned and connected to the inlet 2, and the first through hole 704 is aligned and connected to the outlet 3. The drain outlet 5 and the blind hole 4 are both blocked by the side wall of the core cylinder 7. Raw water enters the valve chamber 105 from the inlet 2, flows into the annular cavity 703 of the core cylinder 7 through the second through hole 705, and then flows downward into the tank 9 through the first filter element interface 101. The water flows from top to bottom through the filter layer 10 in the tank 9. Impurities in the water are intercepted by the filter layer. The purified water is collected by the lower water distributor 12 and enters the central pipe 11 and is guided upward. Then it flows into the inner cylinder 702 of the core cylinder 7 through the second filter element interface 102, and finally flows out from the outlet 3 through the first through hole 704 for use by the user, completing the normal filtration process of the filter valve.

[0033] (2) Backwashing mode like Figure 7 and 8 As indicated by the middle arrow, in normal operation mode, the drive device 6 controls the core cylinder 7 to rotate 90 degrees clockwise, aligning the second through hole 705 with the drain outlet 5. Both the inlet 2 and outlet 3 face the side wall of the core cylinder 7, and the outlet 3 is blocked by the side wall of the core cylinder 7. At this time, the first through hole 704 corresponds to the blind hole 4 and connects to the inlet 2 via the adjustment hole 141 and the valve chamber 105. Raw water enters the valve chamber 105 from the inlet 2 through the adjustment hole 141 and is then... The regulating hole 141 in the blind hole 4 flows into the inner cylinder 702 of the core cylinder 7 through the first through hole 704, and then enters the central tube 11 through the second filter element interface 102. It is then sprayed evenly upward by the lower water distributor 12 to backwash the filter layer 10, flushing up the impurities trapped in the filter layer 10. The wastewater carrying the impurities is collected by the upper water distributor 13 and flows into the annular cavity 703 of the core cylinder 7 through the first filter element interface 101. Finally, it is discharged from the drain outlet 5 through the second through hole 705, completing the backwashing process.

[0034] (3) Forward washing mode like Figure 9 and 10 As indicated by the arrow, in the backwash mode, the drive device 6 controls the core cylinder 7 to continue rotating 180 degrees clockwise, so that the first through hole 704 is aligned and connected with the drain outlet 5. The inlet 2 and outlet 3 are both connected to the side wall of the core cylinder 7. The second through hole 705 corresponds to the blind hole 4 and is connected to the valve chamber 105 and the inlet 2 through the adjustment hole 141. The raw water enters the valve chamber 105 from the inlet 2 through the adjustment hole 141, and flows into the annular cavity 703 of the core cylinder 7 through the second through hole 705 through the adjustment hole 141 in the blind hole 4. Then, it enters the upper water distributor 13 of the filter tank 9 through the first filter element interface 101 and flows evenly downward through the filter layer 10 to further clean the loose impurities and sewage remaining after backwashing. The flushed sewage flows into the inner cylinder 702 through the lower water distributor 12, the central pipe 11, and the second filter element interface 102, and finally flows out from the drain outlet 5 through the first through hole 704, completing the forward washing process. After the initial wash is complete, the filter cylinder can be rotated 90 degrees clockwise to switch the filter valve back to normal operating mode and continue working.

[0035] It should be noted that the effective area of ​​the inlet and outlet can exceed the effective area of ​​the inlet and outlet pipes outside the valve body. Under the condition that the valve body can provide the maximum water passage area, the effective passage area of ​​the inlet and outlet on the valve body can be designed according to actual needs.

[0036] The high-performance filter valve provided by this invention adopts a single valve body structure and a coaxially integrated inner and outer cylinder core structure, which is compact and stable in operation. By rotating the core cylinder, the water flow path is guided by the annular cavity between the outer and inner cylinders, which replaces the complex structure of multiple independent cavities or multi-hole fixed valve cylinders in traditional filter valves. The assembly process is simplified, which further simplifies the valve body structure, greatly improves the throughput performance, and significantly reduces the manufacturing cost, thereby improving product consistency and yield.

[0037] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. The basic concept of the present invention lies in adopting a coaxially arranged integrated inner and outer cylinder core structure, which directly changes the water flow path through the rotation of the core cylinder, replacing the complex structure of multiple independent cavities or multi-hole positioning valve cylinders in traditional filter valves. This achieves further simplification of the valve body structure, a significant improvement in flow performance, and a significant reduction in manufacturing costs. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A high-performance filter valve, characterized in that: The device includes a valve body, a core cylinder, and a drive unit. The valve body is provided with an inlet, an outlet, a blind hole, and a drain outlet. The inlet and outlet are distributed laterally on the left and right sides of the valve body, and the blind hole and drain outlet are distributed longitudinally on the front and rear sides of the valve body. The core cylinder is coaxially and rotatably installed in the inner cavity of the valve body, and the top of the core cylinder is connected to the drive unit. The core cylinder includes an outer cylinder and an inner cylinder. The inner cylinder is integrally formed and coaxially disposed inside the outer cylinder, forming an annular cavity between the outer cylinder and the inner cylinder. The outer cylinder has a first through hole and a second through hole, with the first through hole communicating with the inner cylinder and the second through hole communicating with the annular cavity. The bottom of the valve body has a first filter element interface and a second filter element interface, with the first filter element interface communicating with the annular cavity and the second filter element interface communicating with the inner cylinder. The core cylinder is controlled to rotate within the valve body by the driving device to switch the different passage states of the first filter element interface and the second filter element interface with the inlet, outlet and drain respectively, thereby realizing the normal operation, backwashing and forward washing functions of the filter valve.

2. The high-performance filter valve according to claim 1, characterized in that: The valve body is provided with a plug seat, which is a cylindrical structure integrally formed in the middle of the valve body cavity; the top of the plug seat is provided with a boss, and the core cylinder is adapted to be rotatably mounted on the boss, and the core cylinder and the boss are sealed together.

3. The high-performance filter valve according to claim 2, characterized in that: The bottom of the connector forms a second filter element interface, and the first filter element interface is located outside the second filter element interface; the inner and outer walls of the first filter element interface are respectively provided with internal threads and external threads.

4. The high-performance filter valve according to claim 1, characterized in that: The top of the core cylinder is provided with a top cover, and a bushing is sealed and fixed at the top opening of the valve body. A connecting shaft is provided on the top cover. The connecting shaft is rotatably sleeved in the bushing, and the top end of the connecting shaft extends above the bushing and is connected to the drive device for transmission.

5. The high-performance filter valve according to claim 4, characterized in that: The top outer edge of the core tube is provided with at least one slot along the circumferential direction, and the bottom of the top cover is provided with at least one tooth along the circumference. A cover plate is fixed in the middle of the lower surface of the top cover. When the tooth is fitted into the slot, the top cover and cover plate are fitted and fixedly sealed at the upper opening of the core tube.

6. The high-performance filter valve according to claim 1, characterized in that: The first through hole and the second through hole are symmetrically arranged at 180 degrees on the outer cylinder.

7. The high-performance filter valve according to claim 1, characterized in that: The outlet and the drain extend toward the middle of the valve body and contact the outer wall of the core cylinder. The inlet and the blind hole form a valve cavity interlayer for water passage between the inlet and the core cylinder.

8. The high-performance filter valve according to claim 7, characterized in that: Adjusting components are provided in the four openings of the valve body. The end of the adjusting component near the core cylinder is sealed against the outer wall of the core cylinder. Adjusting holes communicating with the valve cavity are opened on the adjusting components located in the water inlet and the blind hole. The effective flow area of ​​the water flowing through the valve cavity can be adjusted by controlling the axial movement of the adjusting component.

9. The high-performance filter valve according to claim 8, characterized in that: The adjusting components are threaded into the corresponding valve body openings, and the adjusting component has a screw end extending to the outside of the valve body on the side away from the core cylinder. By rotating the screw end, the adjusting component can be driven to move axially toward or away from the core cylinder to adjust the sealing tightness between the adjusting component and the outer wall of the core cylinder.

10. The high-performance filter valve according to any one of claims 1-9, characterized in that: The filter valve is an injection-molded structure.

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