Water inlet end pressure balancing device

Abstract

A water inlet end pressure balancing device comprises a shell installed on a pipeline and is characterized in that the shell is provided with a cold water inlet connector, a hot water inlet connector, a cold water outlet connector and a hot water outlet connector, the cold water inlet connector is communicated with a cold water inlet pipeline, the hot water inlet connector is communicated with a hot water inlet pipeline, and the cold water outlet connector is communicated with the cold water inlet end of a valve element. The shell is internally provided with an adjusting cavity, the adjusting cavity is internally provided with a pressure balance valve element, the pressure balance valve element comprises a valve shell and a balance part which is located in the valve shell and can transversely slide, the balance part enables the cold water inlet connector to be communicated with the cold water outlet connector, and the hot water inlet connector is communicated with the hot water outlet connector. Under the action of water pressure, distribution of water flowing out of the cold water outlet connector and the hot water outlet connector can be automatically adjusted through transverse sliding of the balance part. The water inlet end pressure balancing device is installed between the faucet and the water inlet pipeline, so that a pressure balancing valve element does not need to be installed in the faucet body, and the size of the faucet is smaller.

Description

Technical Field

[0001] This utility model relates to the field of faucet technology, and in particular to a pressure balancing device at the water inlet. Background Technology

[0002] As people's living standards improve, faucets are gradually developing towards multi-functionality. Currently, faucets on the market often utilize pressure-balancing valve cores to maintain a constant water temperature, giving them a constant temperature function. Existing faucets with pressure-balancing valve cores, such as those described in Chinese invention application CN201310049590.2 (publication number CN103123005A), have a hollow internal cavity. A pressure-balancing valve is installed within this cavity, dividing the faucet's internal cavity into a cold water chamber, a hot water chamber, and a mixing chamber. The pressure-balancing valve has internal channels connecting these three chambers, allowing the faucet to dispense water at a constant temperature.

[0003] While the aforementioned faucets can achieve thermostatic functionality through a pressure-balancing valve core, this core occupies a significant amount of space within the faucet body. This not only leaves no room for other components, limiting the faucet's functionality, but also increases its size, making packaging and transportation inconvenient and increasing production costs. Furthermore, existing faucets are typically mounted on washbasins, with angle valves located below. If a leak or damage occurs, the user can shut off the water supply via the angle valve for repair or replacement. However, both the angle valve and the pressure-balancing valve core must be separately installed in the bathroom fixtures, complicating the structure and hindering production and maintenance. Therefore, further improvements to the faucet's water inlet are needed. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a water inlet pressure balancing device with a simple structure and a more reasonable layout, in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: The inlet pressure balancing device includes a housing installed on the pipeline, characterized in that: the housing has a cold water inlet connector, a hot water inlet connector, a cold water outlet connector, and a hot water outlet connector. The cold water inlet connector is connected to the cold water inlet pipeline, the hot water inlet connector is connected to the hot water inlet pipeline, the cold water outlet connector is connected to the cold water inlet end of the valve core, and the hot water outlet connector is connected to the hot water inlet end of the valve core. The housing is provided with an adjustment chamber, and the adjustment chamber is provided with a pressure balancing valve core. The pressure balancing valve core includes a valve shell and a balancing component located inside the valve shell that can slide laterally. The balancing component connects the cold water inlet connector to the cold water outlet connector and the hot water inlet connector to the hot water outlet connector. Under the action of water pressure, the lateral sliding of the balancing component can automatically adjust the water flow distribution of the cold water outlet connector and the hot water outlet connector.

[0006] Furthermore, the cold water inlet connector and the hot water inlet connector are each equipped with a one-way valve to prevent water backflow. The one-way valve is a check valve that prevents water backflow. The one-way valve ensures that the pressure balancing device at the inlet end will not experience backflow when no water is being used, thus ensuring that the temperature or quality of the cold and hot water in the water pipe or water tank is not affected by the backflow, thereby improving the user experience.

[0007] Furthermore, both the cold water inlet connector and the hot water inlet connector have annular grooves on their inner walls, and a retaining ring is installed in the annular groove. The one-way valve is located above the retaining ring, and the retaining ring is used to prevent the one-way valve from falling out. The retaining ring can hold the one-way valve against the bottom, thereby preventing the one-way valve from falling out of the cold water inlet connector and the hot water inlet connector.

[0008] Furthermore, the housing also includes a first cavity and a second cavity below the regulating cavity. The first cavity is connected to a cold water inlet connector, and the second cavity is connected to a hot water inlet connector. The balancing component has two flow holes, and the first cavity and the second cavity are respectively connected to the two flow holes. The first cavity and the second cavity are separated by a partition in the housing, and the first cavity and the second cavity are not connected. Cold water flows out sequentially through the cold water inlet connector, the first cavity, the regulating cavity, and the cold water outlet connector, while hot water flows out sequentially through the hot water inlet connector, the second cavity, the regulating cavity, and the hot water outlet connector.

[0009] To simplify the machining process of the first and second cavities, openings communicating with the outside are provided on the sides of both cavities. These openings facilitate the machining of the first and second cavities.

[0010] Furthermore, a first switching valve is installed at the opening of the first cavity, with its stem protruding from the housing. This first switching valve controls the connection or disconnection of the cold water inlet and outlet connectors. Similarly, a second switching valve is installed at the opening of the second cavity, with its stem protruding from the housing. This second switching valve controls the connection or disconnection of the hot water inlet and outlet connectors. This switching valve replaces the traditional angle valve, eliminating the need for angle valves on the water pipes. If a leaking or damaged faucet requires replacement, the user simply needs to close both the first and second switching valves, preventing water from flowing into the inlet pressure balancing device. This allows for easy replacement or repair of the faucet. Therefore, this inlet pressure balancing device combines the angle valve and the pressure balancing valve core, simplifying the layout of the bathroom fixtures.

[0011] Furthermore, a plug is provided at the opening. If an angle valve is already installed on the existing water pipe, plugs are provided at both ends of the opening of the pressure balancing device at the inlet end to prevent water from flowing out of the opening. The user can use the existing angle valve to control the opening and closing of the flow channel.

[0012] Furthermore, a first stop is provided at the connection between the cold water inlet connector and the first cavity, and a second stop is provided at the connection between the hot water inlet connector and the second cavity. The first and second stops prevent the check valve from moving upwards. The first and second stops can be annular protrusions, which do not affect the water flow and can also fix the check valve inside the cold or hot water inlet connector. Alternatively, the first and second stops can be protrusions spaced circumferentially, which can abut against the top of the check valve to prevent it from moving upwards.

[0013] To facilitate the fabrication of the regulating cavity, the housing comprises an upper housing and a lower housing. The top of the upper housing protrudes upward to form the cold water outlet and hot water outlet, while the bottom of the lower housing protrudes downward to form the cold water inlet and hot water inlet. An regulating cavity is formed between the upper and lower housings. Workers only need to fabricate the bottom of the upper housing and the top of the lower housing; the upper and lower housings are then assembled to form the regulating cavity. The upper and lower housings are fixed together using bolts.

[0014] Furthermore, a first sealing ring is provided between the upper and lower housings, and a second sealing ring is provided between the valve shell of the pressure balancing valve core and the upper and lower housings. These sealing rings improve the sealing effect of the inlet pressure balancing device, preventing water leakage when water flows through it.

[0015] Furthermore, the outer walls of the cold water inlet connector, hot water inlet connector, cold water outlet connector, and hot water outlet connector are provided with threads. The threaded cold water inlet connector, hot water inlet connector, cold water outlet connector, and hot water outlet connector can be connected to the threaded interface of the water pipe or valve core inlet.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] (1) The pressure balancing device at the inlet end is equipped with a pressure balancing valve core in the regulating chamber. The balancing element of the pressure balancing valve core adjusts the resistance coefficient of the fluid passing through the valve according to the water pressure of the cold water and hot water on both sides, thereby adjusting the distribution of the flow of cold water and hot water on both sides. That is, when the water pressure on one side of the balancing element increases, the balancing element moves laterally under the action of water pressure, making the valve opening on that side of the pressure balancing valve core smaller, and the flow of fluid that can flow into that side smaller, thereby ensuring the stable flow of the pressure balancing valve core on both sides, avoiding the fluid flowing out of the pressure balancing device from fluctuating between hot and cold, and ensuring the user's user experience.

[0018] (2) The inlet cold water connector and the inlet hot water connector of the inlet pressure balancing device are respectively connected to the interface of the corresponding inlet cold water pipe and the inlet hot water pipe. The outlet cold water connector and the outlet hot water connector are respectively connected to the inlet cold water end and the outlet hot water end of the upper faucet valve core, so that the inlet pressure balancing device is installed between the faucet and the inlet water pipe, so that the flow rate of cold water and hot water before flowing into the faucet is continuously stable.

[0019] (3) The pressure balancing device at the inlet end is installed between the faucet and the inlet pipe, so that the pressure balancing valve core does not need to be installed in the faucet body, the faucet is smaller, thus saving the production cost of the faucet; and other components can also be installed in the faucet body, so that the faucet has multiple functions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention from another perspective (the outer shell is omitted);

[0022] Figure 3 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0023] Figure 4 This is a cross-sectional view of the shell in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0025] Figure 6 This is a cross-sectional view of Embodiment 2 of the present invention. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-4 The image shown is Embodiment 1 of this utility model.

[0028] The inlet pressure balancing device of this embodiment includes a housing 1 installed on the pipeline. The housing 1 includes an upper housing 18 and a lower housing 19. The top of the upper housing 18 protrudes upward to form a cold water outlet connector 1c and a hot water outlet connector 1d. The bottom of the lower housing 19 protrudes downward to form a cold water inlet connector 1a and a hot water inlet connector 1b. An adjustment chamber 11 is formed between the upper housing 18 and the lower housing 19. A pressure balancing valve core 2 is provided in the adjustment chamber 11. The pressure balancing valve core 2 includes a valve housing 21 and a balancing element 22 located inside the valve housing 21 that can slide laterally. The balancing element 22 connects the cold water inlet connector 1a with the cold water outlet connector 1c and the hot water inlet connector 1b with the hot water outlet connector 1d. The outer walls of the cold water inlet connector 1a, hot water inlet connector 1b, cold water outlet connector 1c, and hot water outlet connector 1d are threaded. The cold water inlet connector 1a is connected to the cold water inlet pipe, the hot water inlet connector 1b is connected to the hot water inlet pipe, the cold water outlet connector 1c is connected to the cold water inlet end of the upper faucet valve core, and the hot water outlet connector 1d is connected to the hot water inlet end of the upper faucet valve core. Under water pressure, the lateral sliding of the balancing component 22 can automatically adjust the water flow distribution of the cold water outlet connector 1c and the hot water outlet connector 1d, so that the flow rates of cold water and hot water entering the faucet valve core from the cold water outlet connector 1c and the hot water outlet connector 1d are stable. In addition, a first sealing ring 7 is provided between the upper housing 18 and the lower housing 19 in this embodiment, and a second sealing ring 8 is provided between the valve shell 21 of the pressure balancing valve core 2 and the upper housing 18 and the lower housing 19. The first sealing ring 7 and the second sealing ring 8 can ensure the sealing effect of the pressure balancing device at the water inlet end.

[0029] like Figure 3 As shown, in this embodiment, the cold water inlet connector 1a and the hot water inlet connector 1b are respectively provided with one-way valves 3 to prevent water backflow. The inner walls of both the cold water inlet connector 1a and the hot water inlet connector 1b are provided with annular grooves 12, and a retaining spring 4 is installed within the annular grooves 12. The one-way valve 3 is located above the retaining spring 4, which is used to prevent the one-way valve 3 from falling off.

[0030] In this embodiment, the housing 1 is further provided with a first cavity 13 and a second cavity 14 below the regulating cavity 11. The first cavity 13 is connected to the cold water inlet connector 1a, and the second cavity 14 is connected to the hot water inlet connector 1b. The balancing component 22 is provided with two flow holes 221, and the first cavity 13 and the second cavity 14 are respectively connected to the two flow holes 221. The sides of the first cavity 13 and the second cavity 14 are provided with openings that communicate with the outside. A first switching valve 5a is installed at the opening of the first cavity 13, and the valve stem of the first switching valve 5a is exposed outside the housing 1. The first switching valve 5a can control the connection or disconnection between the cold water inlet connector 1a and the cold water outlet connector 1c. A second switching valve 5b is installed at the opening of the second cavity 14, and the valve stem of the second switching valve 5b is exposed outside the housing 1. The second switching valve 5b can control the connection or disconnection between the hot water inlet connector 1b and the hot water outlet connector 1d. This inlet pressure balancing device has the function of an angle valve to open and close the water pipe. In addition, a first stop 16 is provided at the connection between the cold water inlet connector 1a and the first cavity 13, and a second stop 17 is provided at the connection between the hot water inlet connector 1b and the second cavity 14. The first stop 16 and the second stop 17 can prevent the one-way valve 3 from moving upward.

[0031] The workflow of this embodiment is as follows: A pressure balancing device is installed between the faucet and the inlet pipe. Cold water inlet connector 1a is connected to the cold water inlet pipe, hot water inlet connector 1b is connected to the hot water inlet pipe, cold water outlet connector 1c is connected to the cold water inlet of the upper faucet valve core, and hot water outlet connector 1d is connected to the hot water inlet of the upper faucet valve core. Both the first switch valve 5a and the second switch valve 5b are in the open state. Cold water from the cold water inlet pipe flows sequentially through cold water inlet connector 1a, the first chamber 13, the regulating chamber 11, and the cold water outlet connector 1c to the cold water inlet of the faucet valve core. Hot water from the hot water inlet pipe flows sequentially through hot water inlet connector 1b, the second chamber 14, the regulating chamber 11, and the hot water outlet connector 1d to the hot water inlet of the faucet valve core. Pressure... The balancing valve core 2 can automatically move the balancing component 22 laterally according to the water pressure of cold and hot water, thereby adjusting the area of ​​the flow hole 221 on the balancing component 22 that connects with the first cavity 13 or the second cavity 14 to control the water flow rate. That is, the area of ​​the flow hole 221 that connects with the corresponding cavity will decrease on the side where the water pressure suddenly increases, thereby reducing the water flow rate to maintain the stability of the flow rate on that side. In addition, if the faucet is damaged, the user can close the first switch valve 5a and the second switch valve 5b, that is, disconnect the cold water inlet connector 1a from the cold water outlet connector 1c and the hot water inlet connector 1b from the hot water outlet connector 1d, so that cold and hot water will not flow out from the pressure balancing device at the inlet end, and the user can replace or repair the faucet.

[0032] like Figure 5 and Figure 6 The image shown is Embodiment 2 of this utility model.

[0033] This embodiment is basically the same as Embodiment 1, except that: in this embodiment, the openings of the first cavity 13 and the second cavity 14 are provided with plugs 6. The inlet pressure balancing device of this embodiment is suitable for water pipes that have angle valves installed.

Claims

1. A pressure balancing device at the inlet end, comprising a housing (1) installed on a pipeline, characterized in that: The housing (1) has a cold water inlet connector (1a), a hot water inlet connector (1b), a cold water outlet connector (1c), and a hot water outlet connector (1d). The cold water inlet connector (1a) is connected to the cold water inlet pipe, the hot water inlet connector (1b) is connected to the hot water inlet pipe, the cold water outlet connector (1c) is connected to the cold water inlet end of the valve core, and the hot water outlet connector (1d) is connected to the hot water inlet end of the valve core. The housing (1) is provided with an adjustment chamber (11), and the adjustment chamber (11) is provided with a pressure... The pressure balancing valve core (2) includes a valve body (21) and a balancing element (22) located inside the valve body (21) that can slide laterally. The balancing element (22) connects the inlet cold water connector (1a) to the outlet cold water connector (1c) and the inlet hot water connector (1b) to the outlet hot water connector (1d). Under water pressure, the lateral sliding of the balancing element (22) can automatically adjust the water flow distribution from the outlet cold water connector (1c) and the outlet hot water connector (1d).

2. The inlet pressure balancing device according to claim 1, characterized in that: The cold water inlet connector (1a) and the hot water inlet connector (1b) are respectively equipped with one-way valves (3) to prevent water backflow.

3. The inlet pressure balancing device according to claim 2, characterized in that: Both the cold water inlet connector (1a) and the hot water inlet connector (1b) have annular grooves (12) on their inner walls. A retaining ring (4) is installed in the annular groove (12). The one-way valve (3) is located above the retaining ring (4). The retaining ring (4) is used to prevent the one-way valve (3) from falling off.

4. The inlet pressure balancing device according to claim 1, characterized in that: The housing (1) is further provided with a first cavity (13) and a second cavity (14) below the regulating cavity (11). The first cavity (13) is connected to the cold water inlet connector (1a), and the second cavity (14) is connected to the hot water inlet connector (1b). The balancing component (22) is provided with two flow holes (221), and the first cavity (13) and the second cavity (14) are respectively connected to the two flow holes (221).

5. The inlet pressure balancing device according to claim 4, characterized in that: The first cavity (13) and the second cavity (14) are provided with openings on their sides that communicate with the outside. A first switching valve (5a) is installed at the opening of the first cavity (13). The valve stem of the first switching valve (5a) is exposed outside the housing (1). The first switching valve (5a) can control the connection or disconnection of the inlet cold water connector (1a) and the outlet cold water connector (1c). A second switching valve (5b) is installed at the opening of the second cavity (14). The valve stem of the second switching valve (5b) is exposed outside the housing (1). The second switching valve (5b) can control the connection or disconnection of the inlet hot water connector (1b) and the outlet hot water connector (1d).

6. The inlet pressure balancing device according to claim 4, characterized in that: The first cavity (13) and the second cavity (14) are provided with openings on their sides that communicate with the outside, and plugs (6) are provided at the openings.

7. The inlet pressure balancing device according to claim 4, characterized in that: A first stop (16) is provided at the connection between the cold water inlet connector (1a) and the first cavity (13), and a second stop (17) is provided at the connection between the hot water inlet connector (1b) and the second cavity (14). The first stop (16) and the second stop (17) can prevent the one-way valve (3) from moving upward.

8. The inlet pressure balancing device according to any one of claims 1 to 7, characterized in that: The housing (1) includes an upper housing (18) and a lower housing (19). The top of the upper housing (18) protrudes upward to form the cold water outlet connector (1c) and the hot water outlet connector (1d). The bottom of the lower housing (19) protrudes downward to form the cold water inlet connector (1a) and the hot water inlet connector (1b). An adjustment cavity (11) is formed between the upper housing (18) and the lower housing (19).

9. The inlet pressure balancing device according to claim 8, characterized in that: A first sealing ring (7) is provided between the upper housing (18) and the lower housing (19), and a second sealing ring (8) is provided between the valve shell (21) of the pressure balancing valve core (2) and the upper housing (18) and the lower housing (19).

10. The inlet pressure balancing device according to claim 8, characterized in that: The outer walls of the cold water inlet connector (1a), hot water inlet connector (1b), cold water outlet connector (1c), and hot water outlet connector (1d) are threaded.

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