A hydropneumatic pump and a shower foam device driven purely hydraulically

Abstract

The utility model discloses a kind of hydraulic volume pump and pure water power driven bathing foaming device, and hydraulic volume pump includes pump body, the elastic isolating sleeve of the pump cavity is divided into working chamber and drive chamber, with the liquid inlet pipe and liquid outlet pipe being communicated with working chamber, and with the water inlet pipe and water outlet pipe being communicated with drive chamber, wherein, first water constant flow valve is equipped in water inlet pipe.Pure water power driven bathing foaming device includes bathing device main body, hot water inlet joint, cold water inlet joint, temperature regulating valve, and foaming device and shower assembly are connected at temperature regulating valve output end;Foaming device includes first control valve, mixing cavity, and between mixing cavity and first control valve, air supplementing assembly, water supplementing pipeline, soap supply structure are equipped, and soap supply structure includes soap bottle, hydraulic volume pump.The utility model has the advantages of simpler structure, energy saving, environmental protection, low noise, easy to maintain and lower cost.

Description

Technical Field

[0001] This utility model relates to the field of shower equipment technology, and in particular to a hydraulic volumetric pump and a shower foaming device driven by pure water power using the hydraulic volumetric pump. Background Technology

[0002] Traditional shower heads with foaming functions typically use electromechanical devices to mix water, air, and shower gel. For example, an air pump supplies the gas, while a water pump delivers and mixes the shower gel. This design has revealed a series of problems in practical applications, as follows:

[0003] 1. High energy consumption: The air pump and water pump in traditional foaming showers require electricity to operate, resulting in high energy consumption of the entire device.

[0004] 2. High noise: Electric air pumps and water pumps generate significant mechanical noise when working, especially in a home environment. Noise pollution can seriously affect the user's bathing experience and even disturb the rest of family members.

[0005] 3. Higher cost: The addition of electrical components (such as motors, air pumps, water pumps, etc.) not only increases the manufacturing cost of traditional foaming shower heads, but also increases the subsequent maintenance cost.

[0006] 4. Inconvenient maintenance: Traditional foaming shower heads have a relatively complex structure, especially the motor and pump components, making daily cleaning and maintenance cumbersome. Furthermore, the motor may malfunction during long-term use, affecting the stability and lifespan of the device.

[0007] 5. Complex structure and large size: In order to accommodate components such as motors, air pumps / water pumps, traditional foaming showers are usually complex in structure, resulting in large size and less flexibility in installation and use.

[0008] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0009] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a hydraulic volumetric pump with a simpler structure, energy saving, environmental protection, low noise, easy maintenance and lower cost, as well as a pure water-driven bath foaming device.

[0010] This utility model can be achieved through the following technical solutions:

[0011] To solve the above-mentioned technical problems, this utility model provides a hydraulic positive displacement pump, comprising:

[0012] Pump body, having a pump chamber;

[0013] An elastic isolation sleeve is disposed inside the pump chamber, dividing the pump chamber into a working chamber and a driving chamber. The working chamber is used to contain the liquid to be pumped, and the driving chamber is used to contain the driving liquid.

[0014] The inlet pipe and outlet pipe are connected to the working chamber and are used for the inlet and outlet of the liquid to be pumped.

[0015] The inlet and outlet pipes are connected to the drive chamber and are used to drive the liquid in and out. The elastic isolation sleeve is deformed by hydraulic power, thereby changing the volume of the working chamber and realizing the pumping function.

[0016] The water inlet pipe is equipped with a first water constant flow valve.

[0017] To further address the technical problems to be solved by this utility model, this utility model provides a hydraulic volumetric pump in which a pressure relief structure is provided on the elastic isolation sleeve, for releasing pressure when the free end of the elastic isolation sleeve expands to a predetermined position.

[0018] To further address the technical problem to be solved by this utility model, the hydraulic positive displacement pump provided by this utility model includes a pressure relief structure comprising:

[0019] A needle-type safety valve is located at the free end of the elastic isolation sleeve and can connect the drive chamber and the outlet pipe;

[0020] The pressure element is disposed in the liquid outlet pipe and extends into the working chamber, and is located on the free end movement trajectory of the elastic isolation sleeve;

[0021] When the free end of the elastic isolation sleeve expands to a predetermined position, the pin-type safety valve contacts the pressure member and is pushed open by the pressure member to achieve pressure relief.

[0022] To further address the technical problem to be solved by this utility model, the present utility model provides a hydraulic volumetric pump that also includes an elastic reset member connected to the elastic isolation sleeve. The elastic reset member elastically presses or pulls the elastic isolation sleeve in the direction of compressing the elastic isolation sleeve to assist in the reset of the elastic isolation sleeve.

[0023] To further solve the technical problem to be solved by this utility model, this utility model provides a hydraulic volumetric pump in which a first check valve is provided in the inlet pipe, a second check valve is provided in the outlet pipe, and a pressure opening valve is provided downstream of the second check valve and can be automatically opened under a predetermined water pressure. A buffer chamber is provided between the pressure opening valve and the second check valve.

[0024] This utility model can also be achieved through the following technical solutions:

[0025] A water-driven shower foaming device includes a shower body, wherein the shower body is provided with a hot water inlet connector, a cold water inlet connector, and a temperature regulating valve for adjusting the ratio of hot and cold water. The output end of the temperature regulating valve is connected to a foaming device and a shower head assembly.

[0026] The foaming device includes a first control valve connected to a temperature control valve, and a mixing chamber with an output end connected to a shower assembly for mixing water, air and cleaning liquid to foam and outputting to the shower assembly. Between the mixing chamber and the first control valve, there is a gas replenishment component that replenishes gas by gas-liquid exchange driven by water flow, a water replenishment pipeline that provides water, and a soap supply structure that provides cleaning liquid. The soap supply structure includes a soap bottle and a hydraulic volumetric pump according to the above description.

[0027] The bath foaming device also includes a second control valve for controlling drainage. The inlet of the second control valve is connected to an air supply component and a hydraulic volumetric pump, and the outlet of the second control valve can drain water to the outside.

[0028] In order to further solve the technical problem to be solved by this utility model, in the pure water-driven bath foaming device provided by this utility model, the first control valve and the second control valve are integrated to form a double alternating switching valve.

[0029] To further address the technical problems addressed by this invention, a water-driven bath foaming device is provided, wherein the double-acting alternating switch valve includes a valve body and a double-acting valve core rotatably connected to the valve body. The valve body is provided with a main inlet, a main outlet, a secondary inlet, and a secondary outlet, and the double-acting valve core selectively switches between a first state and a second state.

[0030] In the first state, the dual valve core connects the main inlet and the main outlet, and disconnects the secondary inlet and the secondary outlet;

[0031] In the second state, the main inlet and the main outlet are disconnected, and the secondary inlet and the secondary outlet are connected.

[0032] The main water inlet is connected to the temperature control valve, the main water outlet supplies water to the air supply component, the water supply pipeline and the soap supply structure, the secondary water inlet collects water from the air supply component and the soap supply structure, and the secondary water outlet is used for drainage.

[0033] To further address the technical problems addressed by this utility model, a purely water-driven bath foaming device is provided. The dual valve core includes a rotating component that rotates with it, and a fixing component is provided on the valve body. The rotating component and the fixing component are tightly fitted together. The main inlet, the main outlet, the secondary inlet, and the secondary outlet are all located on the surface of the fixing component facing the rotating component. The surface of the rotating component facing the fixing component has a first connecting groove and a second connecting groove. The rotating component switches between a first state and a second state by rotating.

[0034] In the first state, the first connecting channel connects the main water inlet and the main water outlet, and simultaneously disconnects the secondary water inlet and the secondary water outlet;

[0035] In the second state, the second connecting channel connects the secondary inlet and the secondary outlet, while simultaneously disconnecting the main inlet and the main outlet.

[0036] To further solve the technical problem to be solved by this utility model, this utility model provides a pure water-driven bath foaming device in which the input port of the soap bottle is connected to the liquid inlet pipe, and a third one-way valve is provided between the two; the liquid outlet pipe is connected to the mixing chamber, and a fourth one-way valve is provided between the two; the water inlet pipe and the main water outlet are connected through a driving water circuit, and the water outlet pipe and the secondary water inlet are connected through a first drain pipe.

[0037] The gas replenishment component includes a gas-liquid exchange container. The top of the gas-liquid exchange container is provided with a gas supply pipe leading to the mixing chamber. The gas-liquid exchange container and the main water outlet are connected by a water supply pipe. The bottom of the gas-liquid exchange container and the secondary water inlet are connected by a second drainage pipe.

[0038] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a pure water-driven bath foaming device, wherein the top of the gas-liquid exchange container is provided with an air inlet, and the air inlet is provided with a fifth one-way valve.

[0039] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a water-driven bath foaming device, wherein the air supply pipe is provided with an air regulating valve for adjusting the air flow.

[0040] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a pure water-driven bathing foaming device, wherein the surface of the main body of the bathing device is provided with a first inspection port, and the air regulating valve is detachably connected to the first inspection port.

[0041] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a pure water-driven bathing foaming device, wherein the surface of the main body of the bathing device is provided with a second inspection port, and the first water constant flow valve is detachably connected to the second inspection port.

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] 1. This utility model proposes a hydraulically driven volumetric pump, replacing the electric air pump and water pump commonly used in traditional foaming bath products. This hydraulic volumetric pump has a simple structure, requires no electricity, reduces energy consumption and noise pollution, while also lowering manufacturing and maintenance costs and improving the reliability and service life of the device.

[0044] 2. Furthermore, this utility model also designs a purely water-driven bath foaming device. This device requires no electrical components and relies entirely on water power to achieve the foaming function. This purely water-driven design not only achieves the goal of energy conservation and environmental protection, but also improves the safety of the device, avoiding potential safety hazards caused by electrical component failures. It is especially suitable for occasions with high requirements for electrical safety.

[0045] 3. Furthermore, this invention employs a dual-stage alternating switching valve, integrating foaming and drainage functions into one unit, simplifying the device's structure and facilitating user operation. Users can simply rotate the valve core to switch between foaming and drainage modes, eliminating the need for complex buttons or switches and greatly enhancing the user experience. Attached Figure Description

[0046] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0047] Figure 1 This is a cross-sectional schematic diagram of a hydraulic positive displacement pump;

[0048] Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle;

[0049] Figure 3 This is a three-dimensional structural diagram of a bath foaming device;

[0050] Figure 4 This is one of the exploded diagrams of a shower foaming device;

[0051] Figure 5 This is the second exploded view of a shower foaming device;

[0052] Figure 6 This is a three-dimensional structural diagram of a double-acting alternating switching valve;

[0053] Figure 7This is a schematic diagram of the disassembled double-acting alternating switching valve;

[0054] Figure 8 This is a schematic diagram of the first state of a double-acting alternating switching valve;

[0055] Figure 9 This is a schematic diagram of the second state of a double-acting alternating switching valve;

[0056] Figure 10 This is a structural block diagram of a bath foaming device. Detailed Implementation

[0057] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Example 1: Hydraulic Positive Displacement Pump

[0059] like Figures 1-2 As shown, this embodiment provides a simple and efficient hydraulic volumetric pump that is entirely driven by water. The hydraulic volumetric pump mainly consists of a pump body 1, an elastic isolation sleeve 2, an inlet pipe 12, an outlet pipe 13, an inlet water pipe 21, an outlet water pipe 22, and a first water constant flow valve 2111.

[0060] The specific structure is as follows:

[0061] Pump body 1: The pump body 1 has a pump chamber 11 inside, which is divided into a working chamber 111 and a driving chamber 112 by an elastic isolation sleeve 2. The working chamber 111 is used to contain the liquid to be pumped, such as shower gel, shampoo, or other cleaning liquids, or other liquids that need to be pumped. The driving chamber 112 is used to contain the driving liquid, which is preferably water in this embodiment. The pressure of the water drives the elastic isolation sleeve 2 to deform.

[0062] Elastic isolation sleeve 2: The elastic isolation sleeve 2 is disposed inside the pump chamber 11, and its main function is to completely isolate the working chamber 111 and the driving chamber 112. The material of the elastic isolation sleeve 2 is preferably rubber, silicone or other polymer materials with good elasticity and corrosion resistance. In order to improve the deformation capacity of the elastic isolation sleeve 2 and extend its service life, a corrugated pipe structure is preferably adopted in this embodiment.

[0063] Inlet pipe 12 and outlet pipe 13: Inlet pipe 12 and outlet pipe 13 are respectively connected to working chamber 111, serving as the inlet and outlet of the liquid to be pumped. The liquid to be pumped enters working chamber 111 through inlet pipe 12 and is discharged through outlet pipe 13 under the compression of elastic isolation sleeve 2. To prevent liquid backflow, inlet pipe 12 is provided with a first one-way valve 121, and outlet pipe 13 is provided with a second one-way valve 131.

[0064] Inlet pipe 21 and outlet pipe 22: Inlet pipe 21 and outlet pipe 22 are respectively connected to drive chamber 112, serving as the inlet and outlet of the driving liquid. The driving liquid (water) enters drive chamber 112 through inlet pipe 21, causing elastic isolation sleeve 2 to deform, thereby changing the volume of working chamber 111 and realizing the pumping of the liquid to be pumped. After the driving process is completed, the driving liquid is discharged from outlet pipe 22.

[0065] First water constant flow valve 2111: The first water constant flow valve 2111 is installed in the water inlet pipe 21. Its main function is to ensure a constant flow rate of the driving liquid entering the drive chamber 112, and to avoid affecting the pumping effect due to excessive water pressure fluctuations. The first water constant flow valve 2111 can adopt various structural forms, such as spring-loaded constant flow valve, orifice-type constant flow valve, etc.

[0066] To further improve the reliability and safety of the hydraulic positive displacement pump, this embodiment also includes a pressure relief structure. This pressure relief structure is used to release pressure when the free end of the elastic isolation sleeve 2 expands to a predetermined position, preventing the elastic isolation sleeve 2 from over-expanding and being damaged.

[0067] Specifically, the pressure relief structure includes a needle-type safety valve 23 and a pressure-relief element 14. The needle-type safety valve 23 is located at the free end of the elastic isolation sleeve 2 and connects the drive chamber 112 and the outlet pipe 13. The pressure-relief element 14 (preferably needle-shaped) is located in the outlet pipe 13 and extends into the working chamber 111, positioned on the movement trajectory of the free end of the elastic isolation sleeve 2. When the free end of the elastic isolation sleeve 2 expands to a predetermined position, the needle-type safety valve 23 contacts the pressure-relief element 14 and is pushed open by the pressure-relief element 14, thereby releasing the pressure in the drive chamber 112 through the needle-type safety valve 23 and the outlet pipe 13.

[0068] To make the hydraulic volumetric pump more compact and easier to install, in this embodiment, the pump body 1 is tubular, and the inlet pipe 12 and the outlet pipe 13 are connected to the same end of the pump body 1; one end of the elastic isolation sleeve 2 is fixed to the other end of the pump chamber 11, and the other end of the elastic isolation sleeve 2 is a free end that can freely extend and retract; the inlet pipe 21 and the outlet pipe 22 are set at the fixed end of the elastic isolation sleeve 2 and are directly connected to the drive chamber 112.

[0069] It should be noted that the installation position of the elastic isolation sleeve 2 can be interchanged, that is, the inner cavity of the elastic isolation sleeve 2 can be used as the working cavity, while the space between the outer wall of the elastic isolation sleeve 2 and the inner wall of the pump cavity can be used as the driving cavity.

[0070] To assist in the reset of the elastic isolation sleeve 2 and improve pumping efficiency, this embodiment also includes an elastic reset member 24. The elastic reset member 24 is connected to the elastic isolation sleeve 2 and elastically presses or pulls the elastic isolation sleeve 2 in the direction of compression. The elastic reset member 24 can be made of spring, rubber, or other elastic materials.

[0071] Preferably, in order to improve the pressure relief effect and achieve better sealing performance, in this embodiment, the free end of the elastic isolation sleeve 2 is conical, and a sealing ring is provided on its conical surface. When the elastic isolation sleeve 2 expands to the predetermined position, the pin-type safety valve 23 is opened, and its conical surface fits and seals against the inner wall of the pump chamber 11 end, so as to directly relieve pressure into the outlet pipe 13.

[0072] To further improve the stability and reliability of pumping, in this embodiment, a pressure-opening valve 132 is also provided in the outlet pipe 13. The pressure-opening valve 132 is located downstream of the second check valve 131 and can automatically open under a predetermined water pressure. A buffer chamber 133 is provided between the pressure-opening valve 132 and the second check valve 131. The buffer chamber 133 has a certain volume and contains a certain amount of driving liquid (such as water). After each start-up, the water in the buffer chamber 133 needs to be drained first, and then the liquid to be pumped (such as shower gel) is pumped. This delays the pumping of the liquid to be pumped and avoids waste in the early stages. After the pumped liquid is pumped out, the water supply will not stop immediately, but will continue. The water flow in the elastic isolation sleeve 2 will open the needle-type safety valve 23 and flow into the buffer chamber 133. Once the buffer chamber 133 is filled with water again, it is ready for the next use.

[0073] Example 2: Pure water-driven bath foaming device

[0074] like Figures 3-10 As shown, this utility model also discloses a water-driven bath foaming device. This device does not require electricity and relies entirely on water power to achieve the foaming function, which has the advantages of energy saving, environmental protection and safety.

[0075] The shower foaming device mainly includes the shower body 3, the foaming device 4, and the shower head assembly 5.

[0076] Shower Body 3: The shower body 3 is the shell of the entire device, integrating components such as a hot water inlet connector 31, a cold water inlet connector 32, and a thermostatic valve 33. The hot water inlet connector 31 and the cold water inlet connector 32 are connected to the hot water pipe and the cold water pipe, respectively. The thermostatic valve 33 is used to adjust the ratio of hot and cold water to obtain a suitable bathing temperature. The output end of the thermostatic valve 33 is connected to a foaming device 4 and a shower head assembly 5.

[0077] Foaming device 4: The foaming device 4 is the core component of this utility model. Its main function is to mix water, air and cleaning liquid to produce rich foam. The foaming device 4 includes components such as a first control valve, a mixing chamber 42, an air supply component 43, a water supply pipe 44, and a soap supply structure 45.

[0078] First control valve: The first control valve is connected to the output end of the temperature control valve 33 and is used to control the flow of water.

[0079] Mixing chamber 42: The input end of the mixing chamber 42 is connected to the output end of the first control valve, and its output end is connected to the shower assembly 5. The mixing chamber 42 has a special internal structure that allows water, air, and cleaning fluid to mix thoroughly, generating abundant foam, which is then output to the shower assembly 5. Specifically, the mixing chamber 42 employs a spiral guide vane and a fine mesh structure (such as a fine mesh) to enhance mixing efficiency, resulting in more uniform and delicate foam. The spiral guide vane creates a vortex motion within the chamber, thereby enhancing the interaction between water, air, and cleaning fluid; the fine mesh further refines the foam, making the output foam more uniform and delicate, improving the user experience. The output end of the mixing chamber is also equipped with a third one-way valve (not shown in the figure) to prevent water from flowing back into the chamber from the shower head, thus ensuring the long-term stable operation of the device.

[0080] Gas replenishment component 43: The gas replenishment component 43 is located between the first control valve and the mixing chamber 42, and is used to replenish gas to the mixing chamber 42. The gas replenishment component 43 is driven by water flow to perform gas-liquid exchange, realizing the automatic gas replenishment function.

[0081] Water supply line 44: The water supply line 44 is located between the first control valve and the mixing chamber 42 and is used to replenish water to the mixing chamber 42 to adjust the humidity and concentration of the foam.

[0082] Soap supply structure 45: The soap supply structure 45 is disposed between the first control valve and the mixing chamber 42, and is used to supply cleaning solution to the mixing chamber 42. The soap supply structure 45 includes a soap bottle 451 and a hydraulic volumetric pump. The soap bottle 451 is used to store the cleaning solution, and the hydraulic volumetric pump is used to pump the cleaning solution in the soap bottle 451 into the mixing chamber 42. In this embodiment, the hydraulic volumetric pump is the hydraulic volumetric pump described in Embodiment 1.

[0083] Shower assembly 5: The shower assembly 5 is connected to the output end of the mixing chamber 42 and is used to spray the foam generated by the mixing chamber 42 onto the human body to achieve the bathing function.

[0084] To achieve the drainage function, this embodiment also includes a second control valve. The inlet of the second control valve is connected to the air supply assembly 43 and the hydraulic volumetric pump, while the outlet of the second control valve is equipped with a drainage pipe, which can discharge water to the outside.

[0085] To simplify the structure and facilitate operation, in this embodiment, the first control valve and the second control valve are integrated into a single unit to form a dual-alternating switching valve 41. The dual-alternating switching valve 41 can switch between foaming and drainage functions by rotating the valve core.

[0086] Specifically, such as Figures 6-9As shown, the double-acting alternating switching valve 41 includes a valve body 411 and a double valve core 412. The valve body 411 is provided with a main inlet 413, a main outlet 414, a secondary inlet 415, and a secondary outlet 416. The double valve core 412 is rotatably connected in the valve body 411 and can switch between a first state and a second state.

[0087] First state: In the first state, the dual valve core 412 connects the main inlet 413 and the main outlet 414, and disconnects the secondary inlet 415 and the secondary outlet 416. At this time, water can enter the air supply component 43, the water supply pipe 44 and the soap supply structure 45, thereby realizing the foaming function.

[0088] Second state: In the second state, the dual valve core 412 disconnects the main inlet 413 and the main outlet 414, and connects the secondary inlet 415 and the secondary outlet 416. At this time, water from the air supply assembly 43 and the soap supply structure 45 can be discharged.

[0089] The main inlet 413 is connected to the temperature control valve 33, the main outlet 414 supplies water to the air supply component 43, the water supply pipeline 44 and the soap supply structure 45, the secondary inlet 415 collects water from the air supply component 43 and the soap supply structure 45, and the secondary outlet 416 is used for drainage.

[0090] To achieve a better sealing effect, in this embodiment, the double valve core 412 includes a rotating component 4121 that can rotate with it, and a fixing component 4111 is provided on the valve body 411. The rotating component 4121 and the fixing component 4111 are tightly fitted together, and both are preferably ceramic parts. Of course, to enhance the sealing performance, sealing grooves (not shown in the figure) surrounding the main inlet 413, the main outlet 414, the secondary inlet 415 and the secondary outlet 416, and surrounding the first connecting groove 4122 and the second connecting groove 4123 can also be formed on the opposing surfaces of the rotating component 4121 and the fixing component 4111, respectively. A sealing ring (not shown in the figure) is provided in the sealing groove.

[0091] The main inlet 413, main outlet 414, secondary inlet 415, and secondary outlet 416 are all located on the surface of the fixed member 4111 facing the rotating member 4121. The rotating member 4121 has a first connecting groove 4122 and a second connecting groove 4123 on its surface facing the fixed member 4111. The rotating member 4121 switches between a first state and a second state by rotating.

[0092] First state: In the first state, the first connecting channel 4122 connects the main inlet 413 and the main outlet 414, and simultaneously disconnects the secondary inlet 415 and the secondary outlet 416.

[0093] Second state: In the second state, the second connecting channel 4123 connects the secondary inlet 415 and the secondary outlet 416, and simultaneously disconnects the main inlet 413 and the main outlet 414.

[0094] To ensure a normal supply of cleaning solution, in this embodiment, the inlet of the soap bottle 451 is connected to the inlet pipe 12, and a third one-way valve 4511 is provided between them to prevent the cleaning solution from flowing back into the inlet pipe. The outlet pipe 13 of the hydraulic volumetric pump is connected to the mixing chamber 42, and a fourth one-way valve 134 is provided between them to prevent the liquid in the mixing chamber from flowing back into the outlet pipe. The inlet pipe 21 and the main outlet 414 of the hydraulic volumetric pump are connected through a drive water passage 211 to provide drive water for the hydraulic volumetric pump. The outlet pipe 22 and the secondary inlet 415 of the hydraulic volumetric pump are connected through a first drain pipe 221 to drain the water discharged by the hydraulic volumetric pump.

[0095] To achieve efficient gas-liquid exchange, in this embodiment, the gas replenishment component 43 includes a gas-liquid exchange container 431. The top of the gas-liquid exchange container 431 is provided with a gas delivery pipe 432 leading to the mixing chamber 42. The gas-liquid exchange container 431 and the main water outlet 414 are connected via a water delivery pipe 433. The bottom of the gas-liquid exchange container 431 and the secondary water inlet 415 are connected via a second drainage pipe 434. The gas-liquid exchange container 431 utilizes water flow for gas-liquid exchange and delivers the gas to the mixing chamber 42 through the gas delivery pipe 432.

[0096] In order to ensure air circulation inside the gas-liquid exchange container 431, in this embodiment, the top of the gas-liquid exchange container 431 is provided with an air supply hole 435, and a fifth one-way valve 4351 is provided in the air supply hole 435 to allow air to enter the gas-liquid exchange container 431 and prevent water from flowing out of the gas-liquid exchange container 431.

[0097] In order to adjust the foam concentration, in this embodiment, the gas supply pipe 432 is provided with a gas regulating valve 4321 for adjusting the gas flow rate. By adjusting the opening of the gas regulating valve 4321, the amount of gas entering the mixing chamber 42 can be adjusted, thereby adjusting the foam concentration.

[0098] like Figure 5 As shown, in order to facilitate user adjustment or maintenance of the gas regulating valve 4321, in this embodiment, the surface of the shower body 3 is provided with a first inspection port 3a, and the gas regulating valve 4321 is detachably connected to the first inspection port 3a.

[0099] like Figure 5 As shown, in order to facilitate user adjustment or maintenance of the first water constant flow valve 2111, in this embodiment, the surface of the shower body 3 is also provided with a second inspection port 3b, and the first water constant flow valve 2111 is detachably connected to the second inspection port 3b.

[0100] To ensure a stable water flow in the water supply pipe 44, a second water constant flow valve 441 is provided on the water supply pipe 44 in this embodiment. Of course, to facilitate user adjustment or maintenance of the second water constant flow valve 441, preferably, a third inspection port (not shown in the figure) is also provided on the surface of the shower body 3, and the second water constant flow valve 441 can be detachably installed in the third inspection port.

[0101] In summary, this utility model provides a simple, energy-saving, environmentally friendly, and easy-to-use pure water-driven bath foaming device, which can effectively solve the defects existing in the prior art and has broad application prospects.

Claims

1. A hydraulic displacement pump characterized by, include: Pump body (1) has pump chamber (11); An elastic isolation sleeve (2) is disposed in the pump chamber (11) to divide the pump chamber (11) into a working chamber (111) and a driving chamber (112). The working chamber (111) is used to contain the liquid to be pumped, and the driving chamber (112) is used to contain the driving liquid. The inlet pipe (12) and outlet pipe (13) are connected to the working chamber (111) and are used for the inlet and outlet of the liquid to be pumped. The inlet pipe (21) and outlet pipe (22) are connected to the drive chamber (112) and are used to drive the liquid in and out. The elastic isolation sleeve (2) is deformed by hydraulic power, thereby changing the volume of the working chamber (111) and realizing the pumping function. The water inlet pipe (21) is equipped with a first water constant flow valve (2111).

2. A hydraulic displacement pump according to claim 1, characterized in that: The elastic isolation sleeve (2) is provided with a pressure relief structure for releasing pressure when the free end of the elastic isolation sleeve (2) expands to a predetermined position.

3. A hydraulic displacement pump according to claim 2, characterised in that The pressure relief structure includes: A needle-type safety valve (23) is provided at the free end of the elastic isolation sleeve (2) and can connect the drive chamber (112) and the outlet pipe (13). The top pressure member (14) is disposed in the liquid outlet pipe (13) and extends into the working chamber (111), and is located on the free end movement trajectory of the elastic isolation sleeve (2); When the free end of the elastic isolation sleeve (2) expands to a predetermined position, the pin-type safety valve (23) contacts the pressure member (14) and is pushed open by the pressure member (14) to achieve pressure relief.

4. A hydraulic displacement pump according to claim 1, characterized in that: It also includes an elastic reset member (24) connected to the elastic isolation sleeve (2), the elastic reset member (24) elastically presses or pulls the elastic isolation sleeve (2) in the direction of compressing the elastic isolation sleeve (2) to assist the elastic isolation sleeve (2) in resetting.

5. A hydraulic displacement pump according to claim 1, characterized in that: The inlet pipe (12) is provided with a first check valve (121), the outlet pipe (13) is provided with a second check valve (131), and a pressure opening valve (132) located downstream of the second check valve (131) and capable of automatically opening under a predetermined water pressure is provided. A buffer chamber (133) is provided between the pressure opening valve (132) and the second check valve (131).

6. A purely hydraulically driven shower foam device characterized by: The shower body (3) includes a hot water inlet connector (31), a cold water inlet connector (32), and a temperature control valve (33) for adjusting the ratio of hot and cold water. The output end of the temperature control valve (33) is connected to a foaming device (4) and a shower head assembly (5). The foaming device (4) includes a first control valve connected to the temperature control valve (33) and a mixing chamber (42) with its output end connected to the shower assembly (5) for mixing water, air and cleaning liquid to foam and outputting to the shower assembly (5). Between the mixing chamber (42) and the first control valve, there is a gas replenishment assembly (43) for replenishing gas by gas-liquid exchange driven by water flow, a water replenishment pipeline (44) for providing water, and a soap supply structure (45) for providing cleaning liquid. The soap supply structure (45) includes a soap bottle (451) and a hydraulic volumetric pump according to any one of claims 1-5. The bath foaming device also includes a second control valve for controlling drainage. The inlet of the second control valve is connected to the air supply component (43) and the hydraulic volumetric pump, and the outlet of the second control valve can drain water to the outside.

7. A hydraulically powered shower foam device according to claim 6, wherein: The first control valve and the second control valve are integrated to form a dual alternating switching valve (41).

8. A hydraulically powered shower foam device according to claim 7, wherein: The dual alternating switching valve (41) includes a valve body (411) and a dual valve core (412) rotatably connected in the valve body (411). The valve body (411) is provided with a main inlet (413), a main outlet (414), a secondary inlet (415), and a secondary outlet (416). The dual valve core (412) selectively switches between a first state and a second state. In the first state, the dual valve core (412) connects the main inlet (413) and the main outlet (414), and disconnects the secondary inlet (415) and the secondary outlet (416). In the second state, the main inlet (413) and the main outlet (414) are disconnected, and the secondary inlet (415) and the secondary outlet (416) are connected. The main inlet (413) is connected to the temperature control valve (33), the main outlet (414) supplies water to the air supply assembly (43), the water supply pipeline (44) and the soap supply structure (45), the secondary inlet (415) collects water from the air supply assembly (43) and the soap supply structure (45), and the secondary outlet (416) is used for drainage. The double valve core (412) includes a rotating component (4121) that can rotate with it. A fixing component (4111) is provided on the valve body (411). The rotating component (4121) and the fixing component (4111) are in close contact. The main inlet (413), the main outlet (414), the secondary inlet (415), and the secondary outlet (416) are all provided on the surface of the fixing component (4111) facing the rotating component (4121). The rotating component (4121) has a first connecting groove (4122) and a second connecting groove (4123) on the surface of the rotating component (4121) facing the fixing component (4111). The rotating component (4121) switches between the first state and the second state by rotating. In the first state, the first connecting channel (4122) connects the main inlet (413) and the main outlet (414), and simultaneously disconnects the secondary inlet (415) and the secondary outlet (416). In the second state, the second connecting channel (4123) connects the secondary inlet (415) and the secondary outlet (416), and simultaneously disconnects the main inlet (413) and the main outlet (414).

9. A hydraulically powered shower foam device according to claim 8, wherein: The input port of the soap bottle (451) is connected to the liquid inlet pipe (12), and a third one-way valve (4511) is provided between the two; the liquid outlet pipe (13) is connected to the mixing chamber (42), and a fourth one-way valve (134) is provided between the two; the water inlet pipe (21) and the main water outlet (414) are connected through a driving water passage (211), and the water outlet pipe (22) and the secondary water inlet (415) are connected through a first drainage pipe (221); The gas replenishment component (43) includes a gas-liquid exchange container (431), the top of which is provided with a gas supply pipe (432) leading to the mixing chamber (42). The gas-liquid exchange container (431) and the main outlet (414) are connected by a water supply pipe (433). The bottom of the gas-liquid exchange container (431) and the secondary inlet (415) are connected by a second drainage pipe (434).

10. A hydraulically powered shower foam device according to claim 9, wherein: The gas supply pipe (432) is equipped with a gas regulating valve (4321) for adjusting the gas flow rate.

11. A hydraulically powered shower foam device according to claim 10, wherein: The surface of the shower body (3) is provided with a first inspection port (3a), and the gas regulating valve (4321) is detachably connected to the first inspection port (3a).

12. A hydraulically powered shower foam device according to claim 6, wherein: The surface of the shower body (3) is provided with a second inspection port (3b), and the first water constant flow valve (2111) is detachably connected to the second inspection port (3b).

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