A cold start cold and hot water mixing cartridge with automatic residual water discharge

Abstract

This utility model discloses a cold-start hot and cold water mixing valve core with automatic residual water drainage. It includes a housing, on the inner side of which, from bottom to top, are installed a fixed ceramic plate and a rotating ceramic plate. The fixed ceramic plate has a cold water inlet and a hot water inlet, respectively. The rotating ceramic plate has a water passage corresponding to the cold and hot water inlets, and the fixed ceramic plate has a water outlet corresponding to the water passage and a drain hole corresponding to the water passage. This utility model has a simple structure. When the valve core is closed, the water passage of the rotating ceramic plate connects with the water outlet and drain hole of the fixed ceramic plate, thus draining residual water. Simultaneously, the hot and cold water inlets of the valve core are closed, automatically draining residual water from the water pipe. This prevents continuous dripping, avoids freezing and cracking of the water pipe at extremely low temperatures, and prevents scaling problems in the silicone water outlets of overhead and handheld shower heads due to residual water. It offers excellent performance.

Description

Technical Field

[0001] This utility model relates to the field of valve core technology, specifically to a cold-start hot and cold water mixing valve core that automatically drains residual water. Background Technology

[0002] Hot and cold water mixing valve cores are common accessories for faucets, used to control the mixing of hot and cold water. However, existing exposed shower faucets, concealed shower faucets, floor-standing bathtub faucets, and bathtub-side faucets suffer from problems such as residual water dripping from the pipes after the control valve is closed. This dripping continues until all the water in the pipes has drained, leading to issues like the pipes freezing and cracking at extremely low temperatures, and scaling on the silicone nozzles of overhead and handheld showerheads due to the retained water. These issues result in unsatisfactory performance. Therefore, to avoid these shortcomings, improvements to the existing technology are necessary. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies in the existing technology and provide a simple structure for an automatic residual water discharge cold start hot and cold water mixing valve core.

[0004] This utility model is achieved through the following technical solution:

[0005] A cold-start hot and cold water mixing valve core with automatic residual water drainage includes a housing. A fixed ceramic plate and a rotating ceramic plate are installed sequentially from bottom to top on the inner side of the housing. The fixed ceramic plate is provided with a cold water inlet hole and a hot water inlet hole respectively. The rotating ceramic plate is provided with a water passage hole corresponding to the cold water inlet hole and the hot water inlet hole. The fixed ceramic plate is provided with a water outlet hole corresponding to the water passage hole and a drain hole corresponding to the water passage hole.

[0006] Furthermore, a base plate is installed at the bottom of the outer shell, and an inner water-sealing ring is provided at the connection between the base plate and the fixed ceramic sheet, and an outer water-sealing ring is provided at the bottom of the base plate.

[0007] Furthermore, the base plate is provided with a first through hole, a second through hole, a third through hole, and a fourth through hole corresponding to the cold water inlet hole, the hot water inlet hole, the outlet hole, and the drain hole, respectively.

[0008] Furthermore, the top of the base plate is provided with a positioning post, the fixed ceramic plate is provided with a positioning groove corresponding to the positioning post, the top of the base plate is provided with a locking block, and the bottom of the outer shell is provided with a locking groove corresponding to the locking block.

[0009] Furthermore, a lever is installed on the top of the outer casing, the lever is connected to a rotating disk, and the rotating disk is connected to the rotating ceramic plate.

[0010] Furthermore, the lever is connected to the rotating disk via a fixing pin.

[0011] Furthermore, a rotation limiting block is provided on the outer side of the rotating disk, and a limiting groove corresponding to the rotation limiting block is provided on the inner side of the top of the outer shell.

[0012] Furthermore, the bottom of the rotating disk is provided with a connecting block, and the rotating ceramic plate is provided with a connecting groove corresponding to the connecting block.

[0013] Furthermore, the water outlet is circular, the cold water inlet and the hot water inlet are both arc-shaped, and the drain hole is rectangular.

[0014] Furthermore, the top of the cold water inlet is provided with a first fan-shaped water guide groove, the top of the hot water inlet is provided with a second fan-shaped water guide groove, and the top of the outlet is provided with a long strip-shaped water guide groove.

[0015] Compared to existing technologies, this invention features a fixed ceramic plate with separate cold and hot water inlets, a rotating ceramic plate with corresponding through holes, and a fixed ceramic plate with corresponding outlet and drain holes. When the valve core is opened, if the through holes of the rotating ceramic plate are connected to both the cold and hot water inlets of the fixed ceramic plate, the valve core will output a normal mixture of cold and hot water. If only one side of the through hole of the rotating ceramic plate is connected to the cold water inlet of the fixed ceramic plate, only the cold water will be output. Water; when the water passage of the rotating ceramic disc is connected to the hot water inlet of the fixed ceramic disc on one side, hot water is discharged; when the valve core is closed, when the water passage of the rotating ceramic disc is connected to the water outlet and drain of the fixed ceramic disc, it is in the state of draining residual water. At the same time, the hot and cold water inlets of the valve core are closed, thus automatically draining the residual water in the water pipe. The residual water in the water pipe is quickly discharged, and there will be no continuous dripping. There will be no phenomenon of the water pipe freezing and cracking at extremely low temperatures, nor will there be scale buildup on the silicone water outlets of the overhead spray and handheld shower head due to residual water not being discharged. The effect is good. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the cold start hot and cold water mixing valve core for automatically draining residual water according to this utility model;

[0018] Figure 2This is an exploded view of the structure of the cold start hot and cold water mixing valve core for automatic residual water drainage of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the ceramic sheet fixing in this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the fixed ceramic plate and the rotating ceramic plate when the cold start hot and cold water mixing valve core of the automatic residual water discharge valve of this utility model is in the closed state.

[0021] Figure 5 This is a schematic diagram of the connection structure between the fixed ceramic disc and the rotating ceramic disc when only cold water is discharged from the cold start hot and cold water mixing valve core of this utility model for automatically draining residual water.

[0022] Figure 6 This is a schematic diagram of the connection structure between the fixed ceramic disc and the rotating ceramic disc when the cold and hot water mixing valve core of the automatic residual water discharge valve of this utility model is used to discharge water during cold and hot mixing.

[0023] Figure 7 This is a schematic diagram of the connection structure between the fixed ceramic disc and the rotating ceramic disc when the cold start hot and cold water mixing valve core of the present invention only outputs hot water and automatically drains residual water.

[0024] In the diagram: 1-Outer shell; 2-Fixed ceramic plate; 3-Rotating ceramic plate; 4-Cold water inlet; 5-Hot water inlet; 6-Water passage hole; 7-Water outlet hole; 8-Drain hole; 9-Base plate; 10-Inner water seal ring; 11-Outer water seal ring; 12-First through hole; 13-Second through hole; 14-Third through hole; 15-Fourth through hole; 16-Positioning pin; 17-Positioning groove; 18-Card slot; 19-Toggle lever; 20-Rotating disk; 21-Fixed pin; 22-Rotation limit block; 23-Connecting block; 24-Connecting groove; 25-First sector-shaped water guide groove; 26-Second sector-shaped water guide groove; 27-Long strip-shaped water guide groove. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 7The present invention discloses a cold-start hot and cold water mixing valve core for automatically draining residual water, comprising a housing 1. A fixed ceramic plate 2 and a rotating ceramic plate 3 are sequentially installed on the inner side of the housing 1 from bottom to top. The fixed ceramic plate 2 is provided with a cold water inlet hole 4 and a hot water inlet hole 5. The rotating ceramic plate 3 is provided with a water passage hole 6 corresponding to the cold water inlet hole 4 and the hot water inlet hole 5. The fixed ceramic plate 2 is provided with a water outlet hole 7 corresponding to the water passage hole 6 and a drain hole 8 corresponding to the water passage hole 6. When the valve core is opened, the water passage hole 3 of the rotating ceramic disc 3 connects with the cold water inlet hole 4 and the hot water inlet hole 5 of the fixed ceramic disc 2, and the valve core outputs normal mixed cold and hot water. When the water passage hole 6 of the rotating ceramic disc 3 connects with the cold water inlet hole 4 of the fixed ceramic disc 2 on one side, only cold water is output. When the water passage hole 6 of the rotating ceramic disc 3 connects with the hot water inlet hole 5 of the fixed ceramic disc 2 on one side, only hot water is output. When the valve core is closed, the water passage hole 6 of the rotating ceramic disc 3 connects with the water outlet hole 7 and the drain hole 8 of the fixed ceramic disc 2, which is the state of draining residual water. At the same time, the cold and hot water inlets of the valve core are closed, thereby automatically draining the residual water in the water pipe. The residual water in the water pipe is quickly drained, and there will be no continuous dripping. There will be no phenomenon of freezing and cracking of the water outlet pipe at extremely low temperatures, nor will there be scale buildup in the silicone water outlet of the overhead spray and handheld shower head due to residual water not being drained. The performance is good.

[0027] A base plate 9 is installed at the bottom of the outer casing 1. An inner water sealing ring 10 is provided at the connection between the base plate 9 and the fixed ceramic plate 2 to improve the sealing and waterproof performance of the connection between the base plate 9 and the fixed ceramic plate 2. An outer water sealing ring 11 is provided at the bottom of the base plate 9 to improve the sealing and waterproof performance of the valve core installation.

[0028] The base plate 9 is provided with a first through hole 12, a second through hole 13, a third through hole 14 and a fourth through hole 15 corresponding to the cold water inlet hole 4, the hot water inlet hole 5, the outlet hole 7 and the drain hole 8, to facilitate the inlet and outlet of water and the drainage of the valve core.

[0029] The top of the base plate 9 is provided with a positioning post 16, and the ceramic plate 2 is provided with a positioning groove 17 corresponding to the positioning post 16, which facilitates the positioning and installation of the ceramic plate 2. The top of the base plate 9 is provided with a locking block, and the bottom of the outer shell 1 is provided with a locking groove 18 corresponding to the locking block, which facilitates the quick and stable installation of the base plate 9.

[0030] A lever 19 is installed on the top of the outer casing 1. The lever 19 is connected to a rotating disk 20. The rotating disk 20 is connected to the rotating ceramic plate 3, which facilitates the control of the rotation of the moving ceramic plate 3.

[0031] The lever 19 is connected to the rotating disk 20 via a fixing pin 21, which facilitates a stable connection between the lever 19 and the rotating disk 20.

[0032] The outer side of the rotating disk 20 is provided with a rotation limit block 22, and the inner side of the top of the outer casing 1 is provided with a limit groove corresponding to the rotation limit block 22, which is conducive to the control of hot and cold water output and drainage of the valve core.

[0033] The bottom of the rotating disk 20 is provided with a connecting block 23, and the rotating ceramic plate 3 is provided with a connecting groove 24 corresponding to the connecting block 23, which facilitates the quick and stable connection between the moving ceramic plate 3 and the rotating disk 20.

[0034] In one specific implementation, the water passage hole 6 is located in the middle of the rotating ceramic plate 3. The water passage hole 6 is elongated. The cold water inlet hole 4, the hot water inlet hole 5, and the drain hole 8 are all located on the outer side of the fixed ceramic plate 2. The water outlet hole 7 is located on the inner side of the fixed ceramic plate 2, which facilitates the arrangement of the cold water inlet hole 4, the hot water inlet hole 5, the water passage hole 6, the water outlet hole 7, and the drain hole 8.

[0035] In one specific implementation, the water outlet 7 is circular, the cold water inlet 4 and the hot water inlet 5 are both arc-shaped, and the drain hole 8 is rectangular, so that the water passage hole 6 and the water outlet 7 can be kept connected, and the water passage hole 6 can be connected to the cold water inlet 4, the hot water inlet 5 and the drain hole 8 respectively.

[0036] The top of the cold water inlet hole 4 is provided with a first fan-shaped water guide groove 25, the top of the hot water inlet hole 5 is provided with a second fan-shaped water guide groove 26, and the top of the outlet hole 7 is provided with a long strip-shaped water guide groove 27, which is conducive to controlling the connection between the cold water inlet hole 4, the hot water inlet hole 5, the outlet hole 7 and the water passage hole 6.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cold-start hot and cold water mixing valve core with automatic residual water drainage, characterized in that: The device includes an outer shell, on the inner side of which fixed ceramic plates and rotating ceramic plates are installed sequentially from bottom to top. The fixed ceramic plates are respectively provided with cold water inlet holes and hot water inlet holes. The rotating ceramic plates are provided with water passage holes corresponding to the cold water inlet holes and hot water inlet holes. The fixed ceramic plates are provided with water outlet holes corresponding to the water passage holes and drain holes corresponding to the water passage holes.

2. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 1, characterized in that: A base plate is installed at the bottom of the outer shell. An inner water-sealing ring is provided at the connection between the base plate and the fixed ceramic sheet, and an outer water-sealing ring is provided at the bottom of the base plate.

3. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 2, characterized in that: The base plate is provided with a first through hole, a second through hole, a third through hole, and a fourth through hole, corresponding to the cold water inlet hole, the hot water inlet hole, the outlet hole, and the drain hole, respectively.

4. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 2, characterized in that: The base plate has a positioning post at the top, the fixing ceramic plate has a positioning groove corresponding to the positioning post, the base plate has a locking block at the top, and the outer shell has a locking groove corresponding to the locking block at the bottom.

5. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 1, characterized in that: A lever is installed on the top of the outer casing, and the lever is connected to a rotating disk, which is connected to the rotating ceramic plate.

6. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 5, characterized in that: The lever is connected to the rotating disk via a fixing pin.

7. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 5, characterized in that: The outer side of the rotating disk is provided with a rotation limiting block, and the inner side of the top of the outer shell is provided with a limiting groove corresponding to the rotation limiting block.

8. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 5, characterized in that: The bottom of the rotating disk is provided with a connecting block, and the rotating ceramic plate is provided with a connecting groove corresponding to the connecting block.

9. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 1, characterized in that: The water outlet is circular, the cold water inlet and the hot water inlet are both arc-shaped, and the drain hole is rectangular.

10. The automatic residual water drainage cold start hot and cold water mixing valve core according to claim 1, characterized in that: The top of the cold water inlet is provided with a first fan-shaped water guide groove, the top of the hot water inlet is provided with a second fan-shaped water guide groove, and the top of the outlet is provided with a long strip-shaped water guide groove.

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