A valve core with double inlet and double outlet and drainage backwash function
By designing a valve core with dual inlet and outlet and drainage backwashing function, independent control and automatic cleaning of the hot and cold water input channels are achieved, solving the problems of separate control of hot and cold water and filtration of dirt in existing valve cores, and ensuring the cleanliness of valve cores and pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 黄机群
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-23
AI Technical Summary
The existing valve core does not have separate control for the hot and cold water input channels, and lacks a structure for filtering dirt and automatically draining water, resulting in the valve core not having the function of filtering dirt.
Design a valve core with dual inlet and dual outlet and drainage backwashing function. Independent control of hot and cold water input channels is achieved by rotating the valve plate and the fixed valve plate coaxially. When the hot and cold water input channels are closed, the drainage backwashing channel is opened. Large particles of dirt are blocked by the filter screen. Backwashing is performed when the valve is rotated to the closed position.
It enables independent control of hot and cold water circuits and automatic cleaning function, preventing dirt from entering the faucet, ensuring the cleanliness of the valve core and pipes, and avoiding cold water dripping and scale buildup during use.
Smart Images
Figure CN224397163U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bathroom valve technology, and in particular to a valve core with double inlet and double outlet and drainage backwashing function. Background Technology
[0002] The valve core (control valve) is the core component of a faucet (including the shower body), used to control the water flow. The most common type on the market is the single-inlet, single-outlet independent water circuit valve core; valve cores that separately control the hot and cold water circuits are less common. Furthermore, existing valve cores lack a filter for dirt and an automatic drainage mechanism, thus lacking a dirt filtration function.
[0003] To solve the above problems, the existing valve core structure needs to be improved so that the hot and cold water input channels in the valve core can be controlled separately, and the drainage backwash channel can be opened simultaneously when the hot and cold water input channels are closed, so as to facilitate backwashing of the valve core water circuit and filter screen deposits, and keep the valve core clean. Utility Model Content
[0004] To address the aforementioned problems, the present invention aims to provide a valve core with dual inlet and dual outlet and drainage backwashing function. The hot and cold water inlet channels of the valve core are easy to control separately, and the drainage backwashing channel can be opened simultaneously when the hot and cold water inlet channels are closed. Furthermore, the valve core water circuit and filter screen deposits can be backwashed during drainage.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A valve core with dual inlet and dual outlet and drainage / backwashing function includes a valve core base plate, a fixed valve plate, a rotating valve plate, a rotating base, and a housing. The valve core base plate has a cold water inlet, a cold water outlet, a hot water inlet, and a hot water outlet. The fixed valve plate has a connecting hole 1, a connecting hole 2, a connecting hole 3, and a connecting hole 4, respectively corresponding to the cold water inlet, cold water outlet, hot water inlet, and hot water outlet. The fixed valve plate also has two drainage grooves. The rotating valve plate has a first connecting cavity and a second connecting cavity. The rotating valve plate rotates coaxially relative to the fixed valve plate so that the first connecting cavity and the second connecting cavity connect the connecting hole 1 and the connecting hole 2, and the connecting hole 3 and the connecting hole 4, respectively, or connect the connecting hole 2 and the drainage grooves, and the connecting hole 4 and the drainage grooves.
[0007] Furthermore, the two drainage channels are symmetrically arranged between the second and third connecting holes, and between the first and fourth connecting holes, and the first and second connecting cavities are symmetrically arranged.
[0008] Furthermore, the rotary valve plate is disposed in the rotary base, and the valve core base plate, fixed valve plate, rotary valve plate and rotary base are disposed in the housing. The rotary base is connected to a rotary operating rod, and the rotary operating rod drives the rotary base and the rotary valve plate to rotate coaxially in the housing.
[0009] Furthermore, a first sealing element is provided between the fixed valve plate and the valve core base plate.
[0010] Furthermore, the bottom surface of the valve core base plate is provided with at least two positioning posts.
[0011] Furthermore, a second sealing element is provided on the bottom surface of the valve core base plate.
[0012] Furthermore, the fixed valve plate and the rotary valve plate are made of ceramic or plastic materials, and the contact surfaces of the rotary valve plate and the fixed valve plate are in a rotating sealing fit.
[0013] Furthermore, the housing is provided with drainage windows corresponding to the two drainage channels respectively.
[0014] Furthermore, the rotating base is provided with a limiting structure to restrict the rotation angle of the rotating valve plate.
[0015] Furthermore, the cold water outlet and the hot water outlet are equipped with filter screens.
[0016] This utility model has the following beneficial effects:
[0017] 1. The valve core of this utility model is provided with a valve core base plate, a fixed valve plate, a rotating valve plate and a rotating base. The rotating valve plate can rotate coaxially with the fixed valve plate. By rotating, the connecting cavity in the rotating valve plate and the corresponding connecting hole in the fixed valve plate are connected respectively, so as to realize the independent opening and closing of the cold water circuit and the hot water circuit. When the two water inlet circuits are closed, the drainage channel is opened at the same time, so as to facilitate the discharge of water in the valve core and the corresponding pipeline through the drain port.
[0018] 2. The fixed valve plate of this utility model is provided with a cold water inlet, a cold water outlet, a hot water inlet, a hot water outlet, and two drainage grooves. The rotating valve plate rotates coaxially with the fixed valve plate. By rotating to different positions, the two water circuits with double inlet and double outlet can be independently controlled and drained. The overall structure is ingeniously designed and easy to use.
[0019] 3. The filter screens installed in the cold water outlet and hot water outlet of this utility model can prevent dirt or scale particles larger than the mesh from entering the installed faucet or shower body. When the rotary valve plate is rotated to the closed position to drain water, it can backwash the dirt attached to the valve core water circuit and filter screen, and discharge the accumulated dirt or scale from the drain groove and drain window, so that the valve core has a backwashing self-cleaning function. Attached Figure Description
[0020] Figure 1 This is a three-dimensional exploded view of the valve core of this utility model, which has dual inlet and dual outlet and drainage and backwashing functions.
[0021] Figure 2 This is a three-dimensional schematic diagram of the valve core of this utility model, which has dual inlet and dual outlet and drainage and backwashing functions.
[0022] Figure 3 This is a three-dimensional schematic diagram of the fixed valve plate of this utility model.
[0023] Figure 4 This is a schematic diagram showing the positional relationship between the rotary valve plate and the fixed valve plate when the rotary valve plate is rotated to the open position.
[0024] Figure 5 This is a schematic diagram showing the positional relationship between the rotary valve plate and the fixed valve plate when the rotary valve plate is rotated to the closed position.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Valve core base plate; 11. Cold water inlet; 12. Cold water outlet; 13. Hot water inlet; 14. Hot water outlet; 15. Positioning pin; 2. Fixed valve plate; 21. Connection hole 1; 22. Connection hole 2; 23. Connection hole 3; 24. Connection hole 4; 25. Drain groove; 3. Rotating valve plate; 31. First connecting cavity; 32. Second connecting cavity; 4. Rotating base; 5. Housing; 51. Drain window; 6. Rotating operating lever; 7. First sealing element; 8. Second sealing element; 9. Filter screen. Detailed Implementation
[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0028] See Figure 1-5As shown, a valve core with dual inlet and dual outlet and drainage backwashing function includes a valve core base plate 1, a fixed valve plate 2, a rotating valve plate 3, a rotating base 4, and a housing 5. The valve core base plate 1 is provided with a cold water inlet 11, a cold water outlet 12, a hot water inlet 13, and a hot water outlet 14. The fixed valve plate 2 is provided with a connecting hole 21, a connecting hole 22, a connecting hole 23, and a connecting hole 24 corresponding to the cold water inlet 11, cold water outlet 12, hot water inlet 13, and hot water outlet 14, respectively. The fixed valve plate 2 is also provided with two drainage grooves 25, which are symmetrically arranged at the connecting holes 22 and 33, and 11 and 4. Between 24; the rotary valve plate 3 is provided with two symmetrically arranged first connecting cavity 31 and second connecting cavity 32. The rotary valve plate 3 rotates coaxially relative to the fixed valve plate 2 so that the first connecting cavity 31 and the second connecting cavity 32 connect the first connecting hole 21 and the second connecting hole 22, and the third connecting hole 23 and the fourth connecting hole 24, respectively, or connect the second connecting hole 22 and the drainage groove 25, and the fourth connecting hole 24 and the drainage groove 25. The housing 5 is provided with drainage windows 51 corresponding to the two drainage grooves 25 respectively. The fixed valve plate 2 and the rotary valve plate 3 are made of ceramic or plastic materials. The contact surfaces of the rotary valve plate 3 and the fixed valve plate 2 are rotated and sealed.
[0029] Specifically, the rotary valve plate 3 is disposed in the rotary base 4. The rotary base 4 has a limiting structure that restricts the rotation angle of the rotary valve plate 3. The rotary valve plate 3 has a rotating groove corresponding to the limiting structure to ensure that the rotary valve plate 3 can synchronously connect the corresponding holes when rotating, without over-rotating to prevent cold water and hot water from mixing in the valve core. The valve core base plate 1, the fixed valve plate 2, the rotary valve plate 3, and the rotary base 4 are disposed in the housing 5. The rotary base 4 is connected to a rotary operating rod 6, which drives the rotary base 4 and the rotary valve plate 3 to rotate coaxially in the housing 5. A first sealing element 7 is provided between the fixed valve plate 2 and the valve core base plate 1. At least two positioning posts 15 are provided on the bottom surface of the valve core base plate 1. A second sealing element 8 is provided on the bottom surface of the valve core base plate 1.
[0030] Furthermore, the cold water outlet 12 and the hot water outlet 14 are equipped with filter screens 9. The filter screens 9 can prevent dirt or scale particles larger than the mesh from entering the installed faucet or shower body. When the rotary valve plate 3 is rotated to the closed position to drain water, it can backwash the accumulated dirt in the valve core water circuit and filter screen 9, and discharge the accumulated dirt or scale from the drain groove 25 and drain window 51.
[0031] The working principle of this utility model is as follows: When the rotary valve plate 3 is rotated to the open position, the first connecting cavity 31 connects the first connecting hole 21 and the second connecting hole 22, and the second connecting cavity 32 connects the third connecting hole 23 and the fourth connecting hole 24. Cold water flows sequentially through the cold water inlet hole 11, the first connecting hole 21, the first connecting cavity 31, the second connecting hole 22, and the cold water outlet hole 12. Hot water flows sequentially through the hot water inlet hole 13, the third connecting hole 23, the second connecting cavity 32, the fourth connecting hole 24, and the hot water outlet hole 14. At this time, the connection position relationship between the rotary valve plate 3 and the fixed valve plate 2 is as follows (refer to...). Figure 4 As shown.
[0032] When the rotary valve plate 3 is rotated to the closed position, the first connection hole 21 is closed first. The first connecting cavity 31 connects the second connection hole 22 to the drain channel 25, and the third connection hole 23 is closed. The second connecting cavity 32 connects the fourth connection hole 24 to another drain channel 25. At this time, cold water and hot water stop entering. Moreover, the water in the internal water circuit of the faucet and shower body can be discharged in two ways. One way is discharged through the hot water outlet 14, the fourth connection hole 24, the second connecting cavity 32, the drain channel 25, and the drain window 51. The other way is discharged through the cold water outlet 12, the second connection hole 22, the first connecting cavity 31, the drain channel 25, and the drain window 51. At the same time, the water flow discharges dirt or scale accumulated in the water circuit and filter screen 9 from the drain channel 625 and the drain window 651, ensuring that the accumulated water can be discharged in time to avoid cold water dripping from the shower head first during use and to avoid scale formation. The connection position relationship between the rotary valve plate 3 and the fixed valve plate 2 at this time is referenced. Figure 5 As shown.
[0033] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A valve core with dual inlet and dual outlet and drainage backwashing function, comprising a valve core base plate (1), a fixed valve plate (2), a rotating valve plate (3), a rotating base (4), and a housing (5), characterized in that: The valve core base plate (1) is provided with a cold water inlet (11), a cold water outlet (12), a hot water inlet (13), and a hot water outlet (14). The fixed valve plate (2) is provided with a connection hole (21), a connection hole (22), a connection hole (23), and a connection hole (24) corresponding to the cold water inlet (11), cold water outlet (12), hot water inlet (13), and hot water outlet (14), respectively. The fixed valve plate (2) is also provided with two drainage grooves (25). The rotary valve plate (3) is provided with a first connecting cavity (31) and a second connecting cavity (32). The rotary valve plate (3) rotates coaxially relative to the fixed valve plate (2) so that the first connecting cavity (31) and the second connecting cavity (32) connect the first connecting hole (21) and the second connecting hole (22) and the third connecting hole (23) and the fourth connecting hole (24) respectively, or connect the second connecting hole (22) and the drainage groove (25) and the fourth connecting hole (24) and the drainage groove (25).
2. The valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The two drainage channels (25) are symmetrically arranged between the connecting two holes (22) and the connecting three holes (23), the connecting one hole (21) and the connecting four holes (24), and the first connecting cavity (31) and the second connecting cavity (32) are symmetrically arranged.
3. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The rotary valve plate (3) is located in the rotary base (4). The valve core base plate (1), the fixed valve plate (2), the rotary valve plate (3) and the rotary base (4) are located in the housing (5). The rotary base (4) is connected to a rotary operating rod (6). The rotary operating rod (6) drives the rotary base (4) and the rotary valve plate (3) to rotate coaxially in the housing (5).
4. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: A first sealing element (7) is provided between the fixed valve plate (2) and the valve core bottom plate (1).
5. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The bottom surface of the valve core base plate (1) is provided with at least two positioning posts (15).
6. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The bottom surface of the valve core base plate (1) is provided with a second sealing element (8).
7. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The fixed valve plate (2) and the rotary valve plate (3) are made of ceramic or plastic materials, and the contact surfaces of the rotary valve plate (3) and the fixed valve plate (2) are rotated and sealed together.
8. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The housing (5) is provided with drainage windows (51) corresponding to the two drainage channels (25) respectively.
9. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The rotating base (4) is provided with a limiting structure to restrict the rotation angle of the rotating valve plate (3).
10. A valve core with dual inlet and dual outlet and drainage backwashing function according to claim 1, characterized in that: The cold water outlet (12) and hot water outlet (14) are equipped with filter screens (9).