Double-valve-body filter valve with roller structure

Abstract

The double-valve-body filter valve with the roller structure comprises a first valve body, a second valve body, a first driving device and a second driving device, the first valve body comprises a first annular cavity and a first valve cavity, the second valve body comprises a second annular cavity and a second valve cavity, the first valve body is provided with a water inlet and a first water outlet, and the second valve body is provided with a second water outlet. A water outlet and a second water outlet are formed in the second valve body, a first roller is rotationally installed in the first valve cavity through a first driving device, a second roller is rotationally installed in the second valve cavity through a second driving device, and a first butt joint opening and a second butt joint opening are formed in the side wall of the first roller and the side wall of the second roller respectively; the first driving device and the second driving device are used for controlling the first roller and the second roller to rotate correspondingly, the communication relation of the channels is switched, and then the functions of normal operation, backwashing and forward washing of the filter valve are achieved. While the functions are not changed and the installation size is compatible, the water passing area is greatly increased, the space utilization of the valve body is maximized, and the cost is remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of water treatment valve technology, and specifically to a dual-valve-body filter valve with a roller structure. Background Technology

[0002] Currently, control valves with planar sealing structures have become the mainstream technology for water treatment filter valves. Water treatment filter valves are core devices used in the water treatment field to control the water flow path of filtration systems, mainly used in industrial carbon filters, sand filters, and household water treatment equipment. Their core function is to achieve three main operating conditions by switching water paths: normal operation (filtration), backwashing (rinsing impurities trapped by the filter media), and forward washing (cleaning residual impurities in the filter media), in order to remove impurities, residual chlorine, heavy metals, and other pollutants from the water and ensure the quality of the effluent.

[0003] For example, patent "CN117345904A" discloses a multi-functional water treatment filter valve, including a moving valve plate, a fixed valve plate, and a valve body. This solution adjusts the water flow channel by the relative rotation of the moving valve plate and the fixed valve plate, and relies on the coordinated cooperation of multiple independent cavities, such as the water inlet cavity, the sewage discharge cavity, and the filter cavity, to achieve the switching of filtration, backwashing, and forward washing functions.

[0004] However, the above scheme requires the cooperation of the moving valve plate, the fixed valve plate, and multiple cavities within the valve chamber to achieve various functions. In actual production, the manufacturing process of the moving valve plate and the fixed valve plate is complex and requires high precision, resulting in high cost, long production cycle, and low efficiency. In addition, the above-mentioned multi-independent cavity design will divide the water flow channel, and the non-channel area of ​​the valve plate mating surface will block the cavity interface. At the same time, during the water circuit switching stage, the holes of the moving valve plate and the fixed valve plate partially overlap, resulting in a smaller actual water flow area and a lower flow rate.

[0005] Therefore, it is necessary to study a dual-valve-body filter valve with a roller structure. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a dual-valve-body filter valve with a roller structure, which effectively solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this invention is: a dual-valve-body filter valve with a roller structure, comprising a first valve body, a second valve body, a first driving device, and a second driving device. Both the first and second valve bodies are double-layered sleeve structures. The first valve body includes a first annular cavity and a first valve cavity, and the second valve body includes a second annular cavity and a second valve cavity, which are connected. The first valve body has an inlet and a first outlet, and the second valve body has an outlet and a second outlet. Through holes are respectively opened on the inner cylinder sidewalls of the two valve bodies to allow the annular cavities and valve cavities of the two valve bodies to communicate accordingly. The first valve cavity is rotatably mounted with a first roller via the first driving device. The second valve chamber is rotatably mounted with a second roller via a second driving device. The side walls of the first roller and the second roller are respectively provided with a first pair of interfaces and a second pair of interfaces. The bottom of the first valve chamber is provided with a first filter element interface and a second filter element interface. The first filter element interface is connected to the inlet or the first drain outlet through the first roller, and the second filter element interface is connected to the outlet or the second drain outlet through the second roller. The first driving device and the second driving device control the rotation of the first roller and the second roller in the corresponding valve chamber, respectively, to switch the connection relationship between the first filter element interface, the second filter element interface and the inlet, the outlet and each drain outlet, thereby realizing the normal operation, backwashing and forward washing functions of the filter valve.

[0008] Furthermore, the inlet is connected to the first annular cavity, the first outlet is connected to the first valve cavity, and both the outlet and the second outlet are connected to the second valve cavity.

[0009] Furthermore, the inner cylinder sidewall of the first valve body is provided with a first through hole and a third through hole, and the inner cylinder sidewall of the second valve body is provided with a second through hole. The first through hole and the water inlet are arranged coaxially in the radial direction, the third through hole and the first drain outlet are arranged coaxially in the longitudinal direction, and the second through hole and the second drain outlet are arranged coaxially in the longitudinal direction.

[0010] Furthermore, both the first roller and the second roller are single-cylinder structures with bottom openings, and their tops are respectively sealed and connected to the first drive device and the second drive device via transmission.

[0011] Furthermore, the bottom of the first valve body is provided with a first filter element interface, and the bottom of the second valve body is connected radially to a water passage. The water passage is connected to the second valve cavity, and one end of the water passage extends into the middle of the second valve cavity. A second filter element interface is provided at the bottom of the water passage to seal and connect with the central tube of the tank, so that the first valve cavity is not connected to the water passage.

[0012] Furthermore, the first drive device controls the first roller to rotate so that the first pair of interfaces are connected to the first through hole and the water inlet, and the second drive device controls the second roller to rotate so that the second pair of interfaces are connected to the water outlet, so that the water flows from the water inlet through the first valve chamber, the first filter element interface, the second filter element interface and the water passage to the second valve chamber, and is discharged from the water outlet, thus realizing the normal operation function.

[0013] Furthermore, the first drive device controls the first roller to rotate until the first pair of interfaces connects with the first drain outlet, and the second drive device controls the second roller to rotate until the second pair of interfaces corresponds with the second through hole, so that the water flows from the inlet through the first annular cavity, through the connecting hole into the second annular cavity, the second valve cavity, the water passage and the second filter element interface to the tank, and from the first filter element interface to the first valve cavity, and finally discharged from the first drain outlet through the first pair of interfaces, thus realizing the backwashing function.

[0014] Furthermore, the first drive device controls the first roller to rotate until the first pair of interfaces connects with the third through hole, and the second drive device controls the second roller to rotate until the second pair of interfaces corresponds to the second drain outlet, so that the water flows from the inlet through the first annular cavity into the first valve cavity, the first filter element interface into the tank, and from the second filter element interface and the water passage to the second valve cavity, and finally through the second pair of interfaces out of the second drain outlet, thus realizing the forward washing function.

[0015] Furthermore, the filter valve is an injection-molded structure.

[0016] The beneficial effects of the above technical solution are: 1. The dual-valve-body filter valve with roller structure provided by the present invention adopts a double-valve-body structure with injection molding. Both the first valve body and the second valve body adopt a double-layer sleeve structure. Each valve body is equipped with a single-cylinder roller structure with only one interface, which replaces the traditional segmented design with multiple independent cavities. This effectively avoids the water flow obstruction problem caused by the segmentation of cavities. The effective water passage area is greatly improved compared with the traditional valve plate structure, which can meet the high flow rate filtration requirements.

[0017] 2. Furthermore, by optimizing the positional relationship between the inlet, outlet, and through hole, and combining the linear alignment of the roller with the interface and the through hole of the valve body cylinder, the present invention significantly reduces the obstruction of the water flow path during the switching of the three functions of normal operation, backwashing, and forward washing, stabilizes the flow rate, and avoids the impact of changes in water flow on the filter layer cleaning efficiency.

[0018] 3. In this invention, the L-shaped water passage at the bottom of the second valve body extends into the valve cavity and has an independently set second filter element interface, which realizes precise guidance of water flow, while ensuring that the first valve cavity and the water passage are not connected to each other, thus avoiding water flow cross-flow.

[0019] 4. In this invention, the top of the single-cylinder drum is directly and sealed to the drive device for rotation, replacing the complex transmission structure of traditional moving valve plate and fixed valve plate; at the same time, the valve body structure, which combines the drum and the double-layer sleeve structure, forms a compact nested layout, which not only ensures that the two drums can operate independently without interference, but also adapts to the water flow requirements of different passages, thus improving the reliability of the valve body structure.

[0020] 5. The method of fitting the roller interface with the through hole of the valve body in this invention has a simple structure and further optimizes the space utilization. Under the premise of the same valve body cavity installation size, the internal functional space is maximized. The integrated architecture reduces the impact of redundant structure on water flow. At the same time, with the simplification of the roller structure, the overall process cost is effectively reduced, the processing cost is significantly reduced, the assembly time is effectively shortened, and the quality inspection cost is further reduced. The defect rate is greatly reduced, thereby effectively shortening the production cycle and improving production efficiency. Attached Figure Description

[0021] 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 individual valve body structure of the filter valve of the present invention; Figure 3 This is a schematic diagram of the external structure of the individual roller structure of the filter valve of the present invention; Figure 4 This is a top-section diagram of the valve body during normal operation of the filter valve 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 assembly diagram of the valve body in the backwashing mode 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 forward washing 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 schematic diagram of the implementation structure of the filter valve of the present invention.

[0022] Reference numerals: 1-First valve body, 11-First through hole, 12-Third through hole, 13-First annular cavity, 14-First valve cavity, 17-First filter element interface, 18-Second filter element interface, 2-Second valve body, 21-Second through hole, 22-Second annular cavity, 23-Second valve cavity, 3-First drive device, 4-Second drive device, 5-Inlet, 6-Outlet, 7-First drain outlet, 8-Second drain outlet, 9-Water passage, 20-First roller, 201-First interface, 30-Second roller, 301-Second interface, 40-Connecting hole, 50-Tank body, 60-Upper water distributor, 70-Lower water distributor, 80-Filter layer, 90-Central pipe. Detailed Implementation

[0023] 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 dual-valve-body filter valve with a roller structure, mainly used in the water treatment field. Addressing the problems of cumbersome manufacturing processes, redundant structures leading to wasted space, and complex structures resulting in long production cycles and high manufacturing costs in existing filter valves, this invention proposes a dual-valve-body filter valve with a roller structure. Through an integrated injection-molded dual-valve-body structure and a roller-type switching mechanism, the rotation of the roller is controlled to switch water passages, achieving three core operating conditions: normal operation (filtration), backwashing, and forward washing. While ensuring unchanged functionality and compatible installation dimensions, it maximizes valve body space utilization and significantly reduces costs, meeting the high-quality water needs of industrial production and daily household use.

[0024] In the specific implementation structure, such as Figure 1-10 As shown, the dual-valve filter valve with roller structure provided in this embodiment includes a first valve body 1, a second valve body 2, a first driving device 3, and a second driving device 4. The first valve body 1 and the second valve body 2 are both double-layer sleeve structures. The first valve body 1 includes a first annular cavity 13 and a first valve cavity 14. The second valve body 2 includes a second annular cavity 22 and a second valve cavity 23. The first annular cavity 13 and the second annular cavity 22 are connected by a connecting hole 40, and the bottom of the first annular cavity 13 and the second annular cavity 22 are both closed structures.

[0025] like Figure 2As shown, the first valve body 1 is provided with an inlet 5 and a first drain outlet 7. The inner cylinder side wall of the first valve body 1 is also provided with a first through hole 11 and a third through hole 12. The inlet 5 is connected to the first annular cavity 13, and the first drain outlet 7 is directly connected to the first valve cavity 14. The first through hole 11 and the inlet 5 are arranged coaxially in the radial direction, and the third through hole 12 and the first drain outlet 7 are arranged coaxially in the longitudinal direction. The second valve body 2 is provided with an outlet 6 and a second drain outlet 8. The inner cylinder side wall of the second valve body 2 is provided with a second through hole 21. The outlet 6 is arranged in the transverse direction, and the second through hole 21 and the second drain outlet 8 are arranged coaxially in the longitudinal direction. Both the outlet 6 and the second drain outlet 8 are directly connected to the second valve cavity 23.

[0026] Furthermore, such as Figure 3-5 As shown, a first roller 20 is rotatably mounted in the first valve chamber 14, and a second roller 30 is rotatably mounted in the second valve chamber 23. Both the first roller 20 and the second roller 30 are single-cylinder structures with open bottoms, and their tops are respectively sealed and connected to the first drive device 3 and the second drive device 4. The first drive device 3 and the second drive device 4 are common gear-fork drive structures in the prior art, which will not be described in detail here. A first pair of interfaces 201 and a second pair of interfaces 301 are respectively opened on the side walls of the first roller 20 and the second roller 30. The controller controls the first drive device 3 and the second drive device 4 to drive the corresponding rollers to rotate. When the interfaces on the rollers are connected to the through holes at different positions on the valve body, the water path switching of different connection paths can be realized, thereby realizing different functions.

[0027] like Figure 1 and Figure 5 As shown, a first filter element interface 17 is provided at the bottom of the first valve body 1. The outer wall of the first filter element interface 17 has external threads, which are used to connect with the tank body 50. A water passage 9 is provided in the first valve chamber 14 below the first roller 20. The water passage 9 extends outward to the bottom of the second valve body 2 and communicates with the second valve chamber 23. That is, the water passage 9 has an L-shaped structure, and the bottom of the water passage 9 forms a second filter element interface 18, which is used to seal and connect with the central tube 90 in the tank body 50, so that the first valve chamber 14 is not connected with the water passage 9, and the second valve chamber 23 is always connected to the central tube 90 in the tank body 50 through the water passage 9.

[0028] The present invention provides a dual-valve filter valve with a roller structure, which has a normal operation mode, a backwash mode and a forward wash mode. The controller drives the first drive device 3 and the second drive device 4 to control the first roller 20 and the second roller 30 to rotate in the corresponding valve chambers, so that the interface on the roller can be connected or blocked with the through holes at different positions on the valve body, thereby realizing the switching operation of the filter valve in different modes of normal operation, backwash and forward wash.

[0029] In practical applications, such as Figure 10 As shown, the filter valve is installed on the top of the tank 50. Water pipes are connected to the inlet 5, outlet 6, and drain of the filter valve. The first filter element interface 17 on the filter valve is connected to the upper water distributor 60, and the second filter element interface 18 is connected to the central pipe 90. The bottom of the central pipe 90 is connected to the lower water distributor 70. The tank 50 contains a filter layer 80 made of activated carbon or quartz sand for purifying the raw water. Its working process is as follows: (1) Normal operating mode like Figure 4 and 5 As indicated by the arrow, during normal operation, the first pair of interfaces 201 are connected to the first through hole 11 on the first valve body 1, and the second pair of interfaces 301 are connected to the outlet 6 on the second valve body 2. At this time, the first drain outlet 7 and the second drain outlet 8 are both blocked. Thus, the raw water enters the first annular cavity 13 from the inlet 5 and flows into the first valve cavity 14 through the first through hole 11 and the first pair of interfaces 201. Then, it is discharged downward into the tank 50 through the first filter element interface 17. After being filtered by the filter layer 80, the water flows from bottom to top through the central pipe 90, through the second filter element interface 18, through the water passage 9, and into the second valve cavity 23. Finally, it is discharged from the outlet 6 through the second pair of interfaces 301, thus realizing the normal operation of the filter valve.

[0030] (2) Backwashing mode like Figure 6 and 7 As indicated by the arrow, in normal operation mode, the first drive device 3 controls the first roller 20 to rotate 90 degrees counterclockwise, and the second drive device 4 controls the second roller 30 to rotate 90 degrees counterclockwise, so that the first pair of interfaces 201 connects to the first drain outlet 7, and the second pair of interfaces 301 connects to the second through hole 21. At this time, the outlet 6 and the second drain outlet 8, the first through hole 11 and the third through hole 12 are all blocked. Thus, after the raw water enters the first annular cavity 13 from the inlet 5, the water flows into the second annular cavity 22 from the connecting hole 40, and then enters the second valve cavity 23 through the second through hole 21 and the second pair of interfaces 301, and then flows downward into the water passage 9. It flows from the central pipe 90 to the water distributor 70 through the second filter element interface 18. After rinsing the filter layer 80 from bottom to top, the backwash wastewater enters the first valve cavity 14 from the first filter element interface 17 and finally exits from the first drain outlet 7 through the first pair of interfaces 201, thus realizing the backwashing of the filter valve.

[0031] (3) Forward washing mode like Figure 8 and 9As indicated by the arrow, in the backwash mode, the first drive device 3 controls the first roller 20 to continue rotating counterclockwise by 180 degrees, and the second drive device 4 controls the second roller 30 to continue rotating counterclockwise by 180 degrees. At this time, the first pair of interfaces 201 on the first roller is connected to the third through hole 12, and the second pair of interfaces 301 on the second roller is connected to the second drain outlet 8. At this time, the outlet 6, the first drain outlet 7, and the first through hole 11 are blocked, so the raw water enters the first annular cavity 13 from the inlet 5, and flows into the first valve cavity 14 through the third through hole 12 and the first pair of interfaces 201. It is then discharged downward into the tank 50 through the first filter element interface 17. The forward wash water flows from top to bottom into the filter layer 80, and then flows upward from the second filter element interface 18 into the water passage 9 through the lower water distributor 70 and the central pipe 90. After entering the second valve cavity 23, it is finally discharged from the second drain outlet 8 through the second pair of interfaces 301, thus realizing the forward wash of the filter valve.

[0032] 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.

[0033] The dual-valve-body filter valve with a drum structure proposed in this invention adopts an integrated molded dual-valve body and a drum-type switching mechanism, resulting in a compact structure that simplifies the manufacturing process and reduces chamber switching. The compact design of the double-layer sleeve valve body and L-shaped water passage optimizes the spatial layout, significantly increasing the water passage area. Driven by a controller, the drum rotates, precisely aligning with the through holes and seamlessly switching between operating, backwashing, and forward washing modes, making operation simpler and path switching more convenient. Furthermore, the direct connection between the drum structure's interface and the valve body's through holes forms a shorter and smoother flow path, which helps to increase the effective water passage area, reduce pressure loss, improve filtration efficiency, and reduce energy consumption. The overall structure of this invention is simplified, making it suitable for mass production, significantly reducing unit manufacturing costs and production cycles, and meeting the market demand for high-performance, low-cost water treatment equipment.

[0034] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. 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 dual-valve-body filter valve with a roller structure, characterized in that: The device includes a first valve body, a second valve body, a first driving device, and a second driving device. Both the first and second valve bodies are double-layered sleeve structures. The first valve body includes a first annular cavity and a first valve cavity, and the second valve body includes a second annular cavity and a second valve cavity. The first and second annular cavities are connected. The first valve body is provided with an inlet and a first outlet, and the second valve body is provided with an outlet and a second outlet. The inner cylinder sidewalls of the two valve bodies are respectively provided with through holes so that the annular cavities and valve cavities of the two valve bodies are correspondingly connected. The first valve cavity is rotatably mounted with a first roller through the first driving device, and the second valve cavity is rotatably mounted with a second roller through the second driving device. The sidewalls of the first and second rollers are respectively provided with a first pair of interfaces and a second pair of interfaces. The bottom of the first valve chamber is provided with a first filter element interface and a second filter element interface. The first filter element interface is connected to the water inlet or the first drain outlet through the first roller, and the second filter element interface is connected to the water outlet or the second drain outlet through the second roller. The first and second rollers are controlled to rotate in the corresponding valve chambers by the first driving device and the second driving device respectively, switching the connection relationship between the first filter element interface, the second filter element interface and the water inlet, the water outlet and each drain outlet, thereby realizing the normal operation, backwashing and forward washing functions of the filter valve.

2. The dual-valve-body filter valve with roller structure according to claim 1, characterized in that: The inlet is connected to the first annular cavity, the first outlet is connected to the first valve cavity, and the outlet and the second outlet are both connected to the second valve cavity.

3. The dual-valve-body filter valve with roller structure according to claim 2, characterized in that: The inner cylinder sidewall of the first valve body is provided with a first through hole and a third through hole, and the inner cylinder sidewall of the second valve body is provided with a second through hole. The first through hole and the water inlet are arranged coaxially in the radial direction, the third through hole and the first drain outlet are arranged coaxially in the longitudinal direction, and the second through hole and the second drain outlet are arranged coaxially in the longitudinal direction.

4. The dual-valve-body filter valve with roller structure according to claim 3, characterized in that: Both the first roller and the second roller are single-cylinder structures with open bottoms, and their tops are respectively sealed and connected to the first drive device and the second drive device for transmission.

5. The dual-valve-body filter valve with roller structure according to claim 4, characterized in that: The bottom of the first valve body is provided with a first filter element interface, and the bottom of the second valve body is connected radially to a water passage. The water passage is connected to the second valve cavity, and one end of the water passage extends into the middle of the first valve cavity. A second filter element interface is provided at the bottom of the water passage to seal and connect with the central tube inside the tank, so that the first valve cavity is not connected to the water passage.

6. The dual-valve-body filter valve with roller structure according to claim 5, characterized in that: The first driving device controls the first roller to rotate so that the first pair of interfaces are connected to the first through hole and the water inlet. The second driving device controls the second roller to rotate so that the second pair of interfaces are connected to the water outlet. This allows water to flow from the water inlet through the first valve chamber, the first filter element interface, the second filter element interface and the water passage to the second valve chamber, and then be discharged from the water outlet, thus achieving normal operation.

7. The dual-valve-body filter valve with roller structure according to claim 5, characterized in that: The first drive device controls the first roller to rotate until the first pair of interfaces connects with the first drain outlet, and the second drive device controls the second roller to rotate until the second pair of interfaces corresponds with the second through hole, so that the water flows from the inlet through the first annular cavity, through the connecting hole into the second annular cavity, the second valve cavity, the water passage and the second filter interface to the tank, and from the first filter interface to the first valve cavity, and finally discharged from the first drain outlet through the first pair of interfaces, thus realizing the backwashing function.

8. The dual-valve-body filter valve with roller structure according to claim 5, characterized in that: The first driving device controls the first roller to rotate until the first pair of interfaces connects with the third through hole, and the second driving device controls the second roller to rotate until the second pair of interfaces corresponds to the second drain outlet, so that the water flows from the inlet through the first annular cavity into the first valve cavity, the first filter element interface into the tank, and from the second filter element interface and the water passage to the second valve cavity, and finally through the second pair of interfaces out of the second drain outlet, thus realizing the forward washing function.

9. The dual-valve-body filter valve with roller structure according to claim 1, characterized in that: The filter valve is an injection-molded structure.

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