A push-button valve core with automatic residual water drainage and adjustable flow rate

Abstract

This utility model discloses a push-button valve core with automatic residual water drainage and adjustable flow rate, including an upper outer shell and a lower outer shell installed at the bottom of the upper outer shell. An inner rotating upper shell is installed inside the upper outer shell, and an inner rotating lower shell is connected to the bottom of the inner rotating upper shell. A limiting sleeve is connected to the outer side of the inner rotating upper shell. The bottom of the rotating rod abuts against a piston that can move up and down. The outer side of the inner rotating lower shell is provided with a drain hole and a water inlet hole, respectively. The inner side of the inner rotating lower shell is provided with a water outlet channel communicating with the water inlet hole. The outer side of the water pipe is provided with a drain through hole corresponding to the drain hole. This utility model has a simple structure. When the push-button is pressed and does not spring back under the action of the rotating rod, the drain through hole of the piston communicates with the drain hole, indicating a drainage state. Simultaneously, the water outlet channel is closed, allowing residual water in the water pipe to be automatically and quickly discharged. Rotating the limiting sleeve adjusts the water flow rate, resulting in good performance.

Description

Technical Field

[0001] This utility model relates to the field of valve core technology, specifically to a push-button valve core that automatically drains residual water and has adjustable flow rate. Background Technology

[0002] The push-button valve core, a common accessory for faucets, is used to turn the faucet on and off, providing stable control over the inlet and outlet water flow. 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. Furthermore, existing push-button valve cores can only control the water flow from different channels, not the flow rate, resulting in unsatisfactory performance. Therefore, to overcome these shortcomings, improvements to the existing technology are necessary. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a push-button valve core that automatically drains residual water and has adjustable flow rate.

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

[0005] An automatic residual water draining and flow-adjustable push-button valve core includes an upper outer shell and a lower outer shell installed at the bottom of the upper outer shell. An inner rotating upper shell is installed on the inner side of the upper outer shell, and an inner rotating lower shell is connected to the bottom of the inner rotating upper shell. A limiting sleeve is connected to the outer side of the inner rotating upper shell. A pressing rod is installed on the inner side of the inner rotating upper shell, and a rotating rod is connected to the bottom of the pressing rod. The bottom of the rotating rod abuts against a piston that can move up and down. A spring is installed on the top of the inner rotating lower shell to abut against the piston. The piston has a water passage extending to the inner rotating lower shell. The outer side of the inner rotating lower shell has a drain hole and a water inlet hole respectively. The inner side of the inner rotating lower shell has a water outlet channel communicating with the water inlet hole. The outer side of the water passage pipe has a drain hole corresponding to the drain hole. The lower outer shell has a drain outlet corresponding to the drain hole and a water inlet corresponding to the water inlet hole.

[0006] Furthermore, a first O-ring and a second O-ring are respectively fitted on the outer side of the piston. The first O-ring is located above the drain hole, and the second O-ring is located below the drain hole. A third O-ring is fitted on the outer side of the bottom of the water pipe.

[0007] Furthermore, a fourth O-ring is fitted on the outer side of the upper part of the lower outer shell, a fifth O-ring is fitted on the outer side of the middle part of the lower outer shell, and a sixth O-ring is installed on the bottom of the lower outer shell.

[0008] Furthermore, a seventh O-ring, an eighth O-ring, and a ninth O-ring are respectively fitted on the outer side of the inner rotating lower shell. The seventh O-ring is located above the drain hole, the eighth O-ring is located below the drain hole, and the ninth O-ring is located below the water inlet hole.

[0009] Furthermore, the outer side of the inner rotating upper shell is provided with connecting external teeth, and the inner side of the limiting outer sleeve is provided with connecting internal teeth corresponding to the connecting external teeth.

[0010] Furthermore, a rotating operating block is provided on the outer side of the limiting outer sleeve, and a rotating limiting groove corresponding to the rotating operating block is provided on the top of the upper outer shell.

[0011] Furthermore, the piston is provided with a stop plate against which the spring rests.

[0012] Furthermore, a protrusion is provided at the center of the bottom of the rotating rod.

[0013] Furthermore, an upper wear-resistant ring is provided at the contact point between the lower part of the inner rotating upper shell and the upper part of the outer shell, and a lower wear-resistant ring is provided at the contact point between the bottom of the inner rotating lower shell and the bottom of the outer shell.

[0014] Furthermore, a filter screen is provided on the outside of the water inlet.

[0015] Compared to existing technologies, this utility model features an inner rotating upper shell mounted on the inner side of the upper outer shell, an inner rotating lower shell connected to the bottom of the inner rotating upper shell, and a limiting sleeve connected to the outer side of the inner rotating upper shell. The bottom of the rotating rod abuts against a piston capable of vertical movement. The outer side of the inner rotating lower shell is provided with a drain hole and a water inlet hole, while the inner side of the inner rotating lower shell has a water outlet channel communicating with the water inlet hole. The outer side of the water pipe has a drain hole corresponding to the drain hole. The lower outer shell has a drain outlet corresponding to the drain hole and a water inlet corresponding to the water inlet hole. When the pressing rod is pressed and springs back, the piston retracts upwards under the spring force, releasing water from the drain hole. Water flows out through the water channel in normal operation. When the pressing lever is pressed and does not spring back under the action of the rotating rod, the piston's drain hole connects with the drain port, indicating a drain state. At the same time, the water outlet channel is closed. Due to the water's own gravity, the residual water in the water pipe is automatically and quickly discharged, preventing continuous dripping. This avoids the phenomenon of the water pipe freezing and cracking at extremely low temperatures, as well as the scaling problem caused by residual water not being discharged from the silicone water outlets of the overhead and handheld shower heads. When the rotating operating limit sleeve drives the inner rotating upper and lower shells to rotate, the conduction area between the water inlet and the water outlet can be controlled, allowing for adjustment of the water flow rate and resulting in good performance. 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 automatic residual water drainage and adjustable flow rate push-button valve core of this utility model;

[0018] Figure 2 This is an exploded view of the automatic residual water discharge and adjustable flow rate push-button valve core of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the automatic residual water discharge and adjustable flow rate push-button valve core of this utility model in the water discharge state;

[0020] Figure 4 This is a schematic diagram of the automatic residual water drainage and adjustable flow rate push-button valve core of this utility model in the closed state.

[0021] In the diagram: 1-Upper outer shell; 2-Lower outer shell; 3-Inner rotating upper shell; 4-Inner rotating lower shell; 5-Limiting outer sleeve; 6-Pressing rod; 7-Rotating rod; 8-Piston; 9-Spring; 10-Water pipe; 11-Drain hole; 12-Water inlet; 13-Water outlet; 14-Drain through hole; 15-Drain outlet; 16-Water inlet; 17-First O-ring seal; 18-Second O-ring seal; 19-Third O-ring seal O-ring; 20-Fourth O-ring seal; 21-Fifth O-ring seal; 22-Sixth O-ring seal; 23-Seventh O-ring seal; 24-Eighth O-ring seal; 25-Ninth O-ring seal; 26-Connecting external teeth; 27-Connecting internal teeth; 28-Rotating operating block; 29-Rotating limit groove; 30-Abutting plate; 31-Protrusion; 32-Upper wear-resistant ring; 33-Lower wear-resistant ring; 34-Filter screen. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 4The present invention discloses an automatic residual water discharge and adjustable flow rate push-button valve core, comprising an upper outer shell 1 and a lower outer shell 2 installed at the bottom of the upper outer shell 1. An inner rotating upper shell 3 is installed inside the upper outer shell 1, and an inner rotating lower shell 4 is connected to the bottom of the inner rotating upper shell 3. A limiting sleeve 5 is connected to the outer side of the inner rotating upper shell 3. A pressing rod 6 is installed inside the inner rotating upper shell 3, and a rotating rod 7 is connected to the bottom of the pressing rod 6. The bottom of the rotating rod 7 abuts against a piston 8 that can move up and down. The top of the inner rotating lower shell 3 is equipped with a spring 9 that abuts against the piston 8. The piston 8 is provided with a water pipe 10 extending to the inner rotating lower shell 4. The outer side of the inner rotating lower shell 4 is provided with a drain hole 11 and a water inlet hole 12 respectively. The inner side of the inner rotating lower shell 3 is provided with a water outlet channel 13 that communicates with the water inlet hole 12. The outer side of the water pipe 10 is provided with a drain through hole 14 corresponding to the drain hole 11. The lower outer shell 2 is provided with a drain outlet 15 corresponding to the drain hole 11 and a water inlet 16 corresponding to the water inlet hole 12. An inner rotating upper shell 3 is installed inside the upper outer shell 1. An inner rotating lower shell 4 is connected to the bottom of the inner rotating upper shell 3. A limiting sleeve 5 is connected to the outside of the inner rotating upper shell 3. The bottom of the rotating rod 7 abuts against a piston 8 that can move up and down. The outer side of the inner rotating lower shell 4 is provided with a drain hole 11 and a water inlet hole 12. The inner side of the inner rotating lower shell 5 is provided with a water outlet channel 13 communicating with the water inlet hole 12. The outer side of the water pipe 10 is provided with a drain through hole 14 corresponding to the drain hole 11. The lower outer shell 2 is provided with a drain outlet 15 corresponding to the drain hole 11 and a water inlet 16 corresponding to the water inlet hole 12. When the pressing rod 6 is pressed and rebounds, the piston 9 is retracted upward by the spring force. When the water outlet channel 13 is open, water is flowing out, which is the normal water outlet state. When the pressing rod 6 is pressed and does not spring back under the action of the rotating rod 7, the drain hole 14 of the piston 8 is connected to the drain hole 11, which is the drain state. At the same time, the water outlet channel 13 is closed. Due to the gravity of the water itself, the residual water in the water pipe is automatically and quickly discharged, and there will be no continuous dripping. There will be no phenomenon of the water outlet pipe freezing and cracking at extremely low temperatures, and no scaling problem caused by residual water not being discharged from the silicone water outlet of the top spray and hand shower. When the rotating operation limit sleeve 5 drives the inner rotating upper shell 3 and the inner rotating lower shell 4 to rotate, the conduction area between the water inlet hole 12 and the water inlet 16 can be controlled, and the water flow rate can be adjusted, resulting in good performance.

[0024] The piston 8 is fitted with a first O-ring seal 17 and a second O-ring seal 18 on its outer side. The first O-ring seal 17 is located above the drain hole 14, and the second O-ring seal 18 is located below the drain hole 14 to prevent leakage when draining water from the drain hole 11. The bottom of the water pipe 10 is fitted with a third O-ring seal 19 on its outer side to prevent water from the water outlet channel 13 from leaking into the drain hole 11.

[0025] A fourth O-ring 20 is fitted on the outer side of the upper part of the lower housing 2, a fifth O-ring 21 is fitted on the outer side of the middle part of the lower housing 2, and a sixth O-ring 22 is installed at the bottom of the lower housing 2 to improve the sealing performance of the valve core installation.

[0026] The outer side of the inner rotating lower shell 4 is respectively fitted with a seventh O-ring 23, an eighth O-ring 24 and a ninth O-ring 25. The seventh O-ring 23 is located above the drain hole 11, the eighth O-ring 24 is located below the drain hole 11 and the ninth O-ring 25 is located below the water inlet hole 12 to prevent water from crossing between the water inlet and the drain.

[0027] The outer side of the inner rotating upper shell 3 is provided with connecting external teeth 26, and the inner side of the limiting sleeve 5 is provided with connecting internal teeth 27 corresponding to the connecting external teeth 26, which facilitates the connection and installation of the limiting sleeve 5 and makes the rotation operation of the inner rotating upper shell 3 by the limiting sleeve 5 more stable.

[0028] The outer side of the limiting sleeve 5 is provided with a rotation operation block 28, and the top of the upper outer shell 1 is provided with a rotation limiting groove 29 corresponding to the rotation operation block 28, which facilitates the rotation operation and rotation limiting of the inner rotating upper shell 3 and the inner rotating lower shell 4, and improves the accuracy of flow control.

[0029] The piston 8 is provided with a stop plate 30 for the spring 9 to abut against, which makes the release of the spring force of the spring 9 more stable and facilitates the stable reset of the piston 8.

[0030] A protrusion 31 is provided at the center of the bottom of the rotating rod 7 to reduce the friction between the rotating rod 7 and the piston 8, making the rotating rod 7 rotate more smoothly.

[0031] An upper wear-resistant ring 32 is provided at the contact point between the lower part of the inner rotating upper shell 3 and the upper part of the outer shell 1, and a lower wear-resistant ring 33 is provided at the contact point between the bottom of the inner rotating lower shell 4 and the bottom of the outer shell 2, so that the rotation operation of the inner rotating upper shell 3 and the inner rotating lower shell 4 is smoother and more stable.

[0032] A filter screen 34 is provided on the outside of the water inlet 16 to filter impurities in the water and prevent blockage inside the valve core and pipeline.

[0033] 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 push rebound spool valve for automatic residual water discharge and adjustable flow, characterized by: The device includes an upper outer shell and a lower outer shell mounted at the bottom of the upper outer shell. An inner rotating upper shell is mounted on the inner side of the upper outer shell, and an inner rotating lower shell is connected to the bottom of the inner rotating upper shell. A limiting sleeve is connected to the outer side of the inner rotating upper shell. A pressing rod is mounted on the inner side of the inner rotating upper shell, and a rotating rod is connected to the bottom of the pressing rod. The bottom of the rotating rod abuts against a piston that can move up and down. A spring is mounted on the top of the inner rotating lower shell to abut against the piston. The piston has a water pipe extending to the inner rotating lower shell. The outer side of the inner rotating lower shell has a drain hole and a water inlet hole respectively. The inner side of the inner rotating lower shell has a water outlet channel communicating with the water inlet hole. The outer side of the water pipe has a drain through hole corresponding to the drain hole. The lower outer shell has a drain outlet corresponding to the drain hole and a water inlet corresponding to the water inlet hole.

2. The automatic residual water draining and adjustable flow push and rebound spool valve core of claim 1, wherein: The piston is fitted with a first O-ring and a second O-ring respectively. The first O-ring is located above the drain hole, and the second O-ring is located below the drain hole. The bottom of the water pipe is fitted with a third O-ring.

3. The automatic flush and adjustable flow push bumping spool of claim 1, wherein: A fourth O-ring is fitted on the outer side of the upper part of the lower outer shell, a fifth O-ring is fitted on the outer side of the middle part of the lower outer shell, and a sixth O-ring is installed on the bottom of the lower outer shell.

4. The automatic flush and adjustable flow push bumping spool of claim 1, wherein: The outer side of the inner rotating lower shell is respectively fitted with a seventh O-ring, an eighth O-ring, and a ninth O-ring. The seventh O-ring is located above the drain hole, the eighth O-ring is located below the drain hole, and the ninth O-ring is located below the water inlet hole.

5. The automatic flush and adjustable flow push bumping spool of claim 1, wherein: The outer side of the inner rotating upper shell is provided with connecting external teeth, and the inner side of the limiting outer sleeve is provided with connecting internal teeth corresponding to the connecting external teeth.

6. The automatic flush and adjustable flow push bumping spool of claim 1, wherein: The outer side of the limiting sleeve is provided with a rotating operating block, and the top of the upper outer shell is provided with a rotating limiting groove corresponding to the rotating operating block.

7. The automatic flush and adjustable flow push bumping spool of claim 1, wherein: The piston is provided with a stop plate against which the spring rests.

8. The automatic residual water drainage and adjustable flow rate push-button valve core according to claim 1, characterized in that: A protrusion is provided at the center of the bottom of the rotating rod.

9. The automatic residual water drainage and adjustable flow rate push-button valve core according to claim 1, characterized in that: An upper wear-resistant ring is provided at the contact point between the lower part of the inner rotating upper shell and the upper part of the outer shell, and a lower wear-resistant ring is provided at the contact point between the bottom of the inner rotating lower shell and the bottom of the outer shell.

10. The automatic residual water drainage and adjustable flow rate push-button valve core according to claim 1, characterized in that: A filter screen is installed on the outside of the water inlet.

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