Hydraulic positive displacement pump and pure hydraulic driven bath foaming device

Abstract

The hydraulic displacement pump comprises a pump body, an elastic isolation sleeve, a liquid inlet pipe, a liquid outlet pipe, a water inlet pipe and a water outlet pipe, the elastic isolation sleeve divides a pump cavity into a working cavity and a driving cavity, the liquid inlet pipe and the liquid outlet pipe are communicated with the working cavity, the water inlet pipe and the water outlet pipe are communicated with the driving cavity, and a first water constant flow valve is arranged in the water inlet pipe. The pure hydraulic drive bathing foaming device comprises a bathing device body, a hot water inlet connector, a cold water inlet connector and a temperature adjusting valve. The output end of the temperature adjusting valve is connected with a foaming device and a shower head assembly. The foaming device comprises a first control valve and a mixing cavity channel, an air supply assembly, a water supply pipeline and a soap supply structure are arranged between the mixing cavity channel and the first control valve, and the soap supply structure comprises a soap bottle and a hydraulic displacement pump. The device has the advantages of being simpler in structure, energy-saving, environment-friendly, low in noise, easy to maintain and lower in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shower devices, and in particular to a water volume pump and a pure water-driven shower foaming device using the same. BACKGROUND

[0002] Traditional shower devices with foaming function usually use electric mechanical devices to realize the mixing of water, air and shower gel. For example, a gas pump is used to provide gas, and a water pump is used to pump and mix the shower gel. However, this design has exposed a series of problems in practical application, as follows:

[0003] 1. High energy consumption: The gas pump and water pump in the traditional foaming shower device need to be driven by electricity to operate, resulting in high energy consumption of the entire device.

[0004] 2. Loud noise: The electric gas pump and water pump produce obvious mechanical noise when working, which seriously affects the user's shower experience and even disturbs the rest of the family, especially in a home environment.

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

[0006] 4. Inconvenient maintenance: The structure of the traditional foaming shower device is relatively complex, especially the motor and pump devices, making the daily cleaning and maintenance process tedious. In addition, the motor may fail during long-term use, affecting the stability and service life of the device.

[0007] 5. Complex structure and large size: In order to accommodate the motor, gas pump / water pump and other components, the structure of the traditional foaming shower device is usually complex, resulting in a large size and less flexible installation and use.

[0008] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and the present application is made based on this situation. SUMMARY

[0009] The present application aims to overcome the shortcomings of the prior art and provide a water volume pump with a simpler structure, energy saving, environmental protection, low noise, easy maintenance and lower cost, and a pure water-driven shower foaming device.

[0010] The present application can be implemented by the following technical solutions:

[0011] To solve the above technical problems, the present application provides a water volume pump, comprising:

[0012] a pump body having a pump cavity;

[0013] An elastic isolation sleeve is arranged in the pump cavity to divide the pump cavity into a working cavity and a driving cavity, the working cavity is used for containing the liquid to be pumped, and the driving cavity is used for containing the driving liquid;

[0014] An inlet pipe and an outlet pipe are communicated with the working cavity and are used for the inlet and outlet of the liquid to be pumped;

[0015] A water inlet pipe and a water outlet pipe are communicated with the driving cavity and are used for the inlet and outlet of the driving liquid, the elastic isolation sleeve is deformed by water power to change the volume of the working cavity, and the pumping function is realized;

[0016] The first water constant flow valve is arranged in the water inlet pipe.

[0017] In order to further solve the technical problems to be solved by the present application, the present application provides a hydraulic volume pump, wherein a pressure relief structure is arranged on the elastic isolation sleeve and is used for releasing pressure when the free end of the elastic isolation sleeve expands to a predetermined position.

[0018] In order to further solve the technical problems to be solved by the present application, the present application provides a hydraulic volume pump, wherein the pressure relief structure comprises:

[0019] A thimble type safety valve is arranged at the free end of the elastic isolation sleeve and can communicate the driving cavity and the outlet pipe.

[0020] A pressing piece is arranged in the outlet pipe and extends into the working cavity and is located on the movement track of the free end of the elastic isolation sleeve.

[0021] When the free end of the elastic isolation sleeve expands to a predetermined position, the thimble type safety valve contacts the pressing piece and is opened by the pressing piece to release pressure.

[0022] In order to further solve the technical problems to be solved by the present application, the present application provides a hydraulic volume pump, further comprising an elastic reset piece connected to the elastic isolation sleeve, the elastic reset piece elastically presses or pulls the elastic isolation sleeve in the direction of compressing the elastic isolation sleeve to assist the reset of the elastic isolation sleeve.

[0023] In order to further solve the technical problems to be solved by the present application, the present application provides a hydraulic volume pump, wherein a first one-way valve is arranged in the inlet pipe, a second one-way valve is arranged in the outlet pipe, a pressure opening valve is arranged downstream of the second one-way valve and can be automatically opened under a predetermined water pressure, and a buffer cavity is arranged between the pressure opening valve and the second one-way valve.

[0024] The present application can also be realized by the following technical solutions:

[0025] A kind of pure water power driven bathing foaming device, including shower main body, the shower main body is equipped with hot water inlet connector, cold water inlet connector, the temperature regulating valve for adjusting the proportion of cold and hot water, the temperature regulating valve output end is connected with foaming device and shower assembly;

[0026] The foaming device includes the first control valve connected to the temperature regulating valve, and the mixing cavity for mixing water, air and cleaning liquid to foam and output to the shower assembly is connected to the shower assembly, the mixing cavity and the first control valve are provided with the air supplement assembly driven by water flow to supplement gas, the water supplement pipeline providing water, and the soap supply structure providing cleaning liquid, the soap supply structure includes soap bottle, and a water power volume pump according to the above;

[0027] The bathing foaming device further includes a second control valve for controlling drainage, the water inlet end of the second control valve is connected to the air supplement assembly and the water power volume pump, and the water outlet end of the second control valve can drain to the outside.

[0028] In order to further solve the technical problems to be solved by the present application, a pure water power driven bathing foaming device is provided, wherein the first control valve and the second control valve are integrally integrated to form a double alternating switch valve.

[0029] In order to further solve the technical problems to be solved by the present application, a pure water power driven bathing foaming device is provided, wherein the double alternating switch valve includes a valve body and a double valve core rotatably connected in the valve body, the valve body is provided with a main water inlet, a main water outlet, a secondary water inlet and a secondary water outlet, and the double valve core selectively switches between a first state and a second state:

[0030] In the first state, the double valve core communicates the main water inlet and the main water outlet, and disconnects the secondary water inlet and the secondary water outlet;

[0031] In the second state, the main water inlet and the main water outlet are disconnected, and the secondary water inlet and the secondary water outlet are communicated;

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

[0033] In order to further solve the technical problems to be solved by the present application, the present application provides a pure water driving bathing foaming device, wherein the double valve core comprises a rotating part capable of rotating with it, a fixed part is arranged on the valve body, and the rotating part and the fixed part are tightly attached; the main water inlet, the main water outlet, the secondary water inlet and the secondary water outlet are arranged on the surface of the fixed part facing the rotating part; the surface of the rotating part facing the fixed part is provided with a first communication groove and a second communication groove, and the rotating part is switched between the first state and the second state by rotating:

[0034] In the first state, the first communication groove communicates 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 communication groove communicates the secondary water inlet and the secondary water outlet, and simultaneously disconnects the main water inlet and the main water outlet.

[0036] In order to further solve the technical problems to be solved by the present application, the present application provides a pure water driving bathing foaming device, wherein the input port of the soap bottle is connected to the liquid inlet pipe, and a third one-way valve is arranged therebetween; the liquid outlet pipe is connected to the mixing cavity, and a fourth one-way valve is arranged therebetween; the water inlet pipe and the main water outlet are connected through a driving water path, and the water outlet pipe and the secondary water inlet are connected through a first drainage pipe;

[0037] The air supplement assembly comprises an air-liquid exchange container, a gas inlet pipe leading to the mixing cavity is arranged at the top of the air-liquid exchange container, a water inlet pipe is arranged between the air-liquid exchange container and the main water outlet, and a second drainage pipe is arranged between the bottom of the air-liquid exchange container and the secondary water inlet.

[0038] In order to further solve the technical problems to be solved by the present application, the present application provides a pure water driving bathing foaming device, wherein the top of the air-liquid exchange container is provided with an air supplement hole, and a fifth one-way valve is arranged in the air supplement hole.

[0039] In order to further solve the technical problems to be solved by the present application, the present application provides a pure water driving bathing foaming device, wherein the gas inlet pipe is provided with an air adjusting valve for adjusting the air volume.

[0040] In order to further solve the technical problems to be solved by the present application, the present application provides a pure water driving bathing foaming device, wherein the surface of the bathing device main body is provided with a first maintenance opening, and the air adjusting valve is detachably connected to the first maintenance opening.

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

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

[0043] 1. The present application provides a pure water power driven water volume pump, which replaces the commonly used electric air pump and water pump in the traditional foaming bathing device. The water volume pump has simple structure and does not need electric power driving, thereby reducing energy consumption, noise pollution, manufacturing cost and maintenance cost, and improving the reliability and service life of the device.

[0044] 2. In addition, the present application also designs a pure water power driven bathing foaming device, which does not need any electric element and completely relies on water power to realize the foaming function. The pure water power driven design not only realizes the purpose of energy saving and environmental protection, but also improves the safety of the device, avoids the safety hidden danger caused by the failure of the electric element, and is especially suitable for occasions with high requirements for electric safety.

[0045] 3. Furthermore, the present application adopts a double alternating switch valve to integrate the foaming and drainage functions, thereby simplifying the structure of the device and facilitating the user operation. The user only needs to simply rotate the valve core to switch between the foaming and drainage modes, without the need of complicated buttons or switches, which greatly improves the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0046] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, in which:

[0047] Figure 1 is a sectional view of the water volume pump;

[0048] Figure 2 is Figure 1 is a local enlarged view of A in the bathing foaming device;

[0049] Figure 3 is a perspective view of the bathing foaming device;

[0050] Figure 4 is a perspective view of the bathing foaming device;

[0051] Figure 5 is a perspective view of the bathing foaming device;

[0052] Figure 6 is a perspective view of the double alternating switch 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 the present invention, the present invention 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] Water inlet pipe 21 and water outlet pipe 22: The water inlet pipe 21 and the water outlet pipe 22 are respectively communicated with the driving cavity 112 as the inlet and outlet of the driving liquid. The driving liquid (water) enters the driving cavity 112 from the water inlet pipe 21, pushes the elastic isolation sleeve 2 to deform, thereby changing the volume of the working cavity 111, and realizing the pumping of the liquid to be pumped. The driving liquid is discharged from the water outlet pipe 22 after completing the driving.

[0065] First water constant flow valve 2111: The first water constant flow valve 2111 is arranged in the water inlet pipe 21, and its main function is to ensure that the flow of the driving liquid entering the driving cavity 112 is constant, avoiding that the pumping effect is affected due to the excessive fluctuation of the water pressure. The first water constant flow valve 2111 can adopt various structural forms, such as spring type constant flow valve, throttle hole type constant flow valve, etc.

[0066] In order to further improve the reliability and safety of the hydraulic displacement pump, the pressure relief structure is further arranged in the embodiment. The pressure relief structure is used to release the pressure when the free end of the elastic isolation sleeve 2 expands to a predetermined position, preventing the elastic isolation sleeve 2 from being damaged due to excessive expansion.

[0067] Specifically, the pressure relief structure includes a thimble type safety valve 23 and a top pressure piece 14. The thimble type safety valve 23 is arranged at the free end of the elastic isolation sleeve 2 and can communicate the driving cavity 112 and the liquid outlet pipe 13. The top pressure piece 14 (preferably needle-shaped) is arranged in the liquid outlet pipe 13 and extends into the working cavity 111 and is located on the movement track 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 thimble type safety valve 23 will contact the top pressure piece 14 and be opened by the top pressure piece 14, thereby releasing the pressure in the driving cavity 112 through the thimble type safety valve 23 and the liquid outlet pipe 13.

[0068] In order to make the structure of the hydraulic displacement pump more compact and the installation more convenient, in the embodiment, the pump body 1 is tubular, the liquid inlet pipe 12 and the liquid outlet pipe 13 are connected at the same end of the pump body 1; one end of the elastic isolation sleeve 2 is fixed at the other end of the pump cavity 11, and the other end of the elastic isolation sleeve 2 is a free end and can freely stretch and retract; the water inlet pipe 21 and the water outlet pipe 22 are arranged at the fixed end of the elastic isolation sleeve 2 and are directly connected with the driving cavity 112.

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

[0070] In order to assist the elastic isolation sleeve 2 to reset and improve the pumping efficiency, the elastic reset piece 24 is further included in the embodiment. The elastic reset piece 24 is connected to the elastic isolation sleeve 2 and elastically presses or pulls the elastic isolation sleeve 2 in the direction of compressing the elastic isolation sleeve 2. The elastic reset piece 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, the free end of the elastic isolation sleeve 2 is tapered, and a sealing ring is arranged on the tapered surface thereof. When the elastic isolation sleeve 2 expands to a predetermined position, the needle safety valve 23 is pushed open, and the tapered surface thereof is in close contact with the inner side wall of the end portion of the pump cavity 11 to seal, so as to directly relieve pressure into the liquid outlet pipe 13.

[0072] In order to further improve the stability and reliability of pumping, in the embodiment, a pressure opening valve 132 is further arranged in the liquid outlet pipe 13, which is arranged downstream of the second one-way valve 131 and can be automatically opened under a predetermined water pressure. A buffer cavity 133 is arranged between the pressure opening valve 132 and the second one-way valve 131. The buffer cavity 133 has a certain volume and contains a certain amount of driving liquid (such as water). After each start, the water in the buffer cavity 133 needs to be discharged before pumping the liquid to be pumped (such as shower gel), which can delay the pumping of the liquid to be pumped and avoid early waste. After the liquid to be pumped is pumped, water will not be stopped immediately, but will continue to be supplied. The water flow in the elastic isolation sleeve 2 will open the needle safety valve 23 and flow into the buffer cavity 133. When the buffer cavity 133 is filled with water again, it can wait for the next use.

[0073] Embodiment two: pure water-driven shower foaming device

[0074] As shown in Figures 3-10 The present application also discloses a pure water-driven shower foaming device. The device does not need to be driven by electricity and relies entirely on water power to achieve the foaming function, which has the advantages of energy saving, environmental protection, safety, etc.

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

[0076] Shower main body 3: The shower main body 3 is the shell of the entire device, and the inside is integrated with a hot water inlet joint 31, a cold water inlet joint 32, a temperature adjusting valve 33, etc. The hot water inlet joint 31 and the cold water inlet joint 32 are respectively connected to the hot water pipe and the cold water pipe, and the temperature adjusting valve 33 is used to adjust the proportion of cold and hot water to obtain a suitable bathing temperature. The output end of the temperature adjusting valve 33 is connected with the foaming device 4 and the shower assembly 5.

[0077] Foaming device 4: The foaming device 4 is the core component of the present application, and its main function is to mix water, air and cleaning liquid to generate abundant foam. The foaming device 4 includes a first control valve, a mixing cavity 42, a gas supplement assembly 43, a water supplement pipeline 44, and a soap supply structure 45.

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

[0079] The input end of the mixing cavity 42 is connected to the output end of the first control valve, and the output end thereof is connected to the shower assembly 5. The mixing cavity 42 is internally provided with a special structure, which can fully mix water, air and cleaning liquid, generate abundant foam, and output the foam to the shower assembly 5. Specifically, the interior of the mixing cavity 42 is provided with spiral flow guides and a refining mesh structure (such as a refining mesh) to enhance the mixing efficiency and make the foam more uniform and delicate. The spiral flow guides make the water flow form a vortex motion in the cavity, thereby enhancing the interaction of water, air and cleaning liquid; and the refining mesh further refines the foam, so that the output foam is more uniform and delicate, and the user's use experience is improved. The output end of the mixing cavity is also provided with a third one-way valve (not shown in the figure) to prevent water at the shower from flowing back to the interior of the cavity, thereby ensuring long-term stable operation of the device.

[0080] The air supplement assembly 43 is arranged between the first control valve and the mixing cavity 42, and is used for supplementing air for the mixing cavity 42. The air supplement assembly 43 is driven by water flow to exchange air and liquid, thereby realizing the automatic air supplement function.

[0081] The water supplement pipeline 44 is arranged between the first control valve and the mixing cavity 42, and is used for supplementing water for the mixing cavity 42 to adjust the humidity and concentration of the foam.

[0082] The soap supply structure 45 is arranged between the first control valve and the mixing cavity 42, and is used for providing cleaning liquid for the mixing cavity 42. The soap supply structure 45 includes a soap bottle 451 and a hydraulic volume pump. The soap bottle 451 is used for storing cleaning liquid, and the hydraulic volume pump is used for pumping the cleaning liquid in the soap bottle 451 into the mixing cavity 42. In this embodiment, the hydraulic volume pump is the hydraulic volume pump described in Embodiment 1.

[0083] The shower assembly 5 is connected to the output end of the mixing cavity 42, and is used for spraying the foam generated by the mixing cavity 42 onto the human body to realize the bathing function.

[0084] In order to realize the drainage function, the present embodiment further includes a second control valve. The water inlet end of the second control valve is connected to the air supplement assembly 43 and the hydraulic volume pump, and the water outlet end of the second control valve is provided with a drainage pipeline, which can drain water to the outside.

[0085] In order to simplify the structure and facilitate operation, in the present embodiment, the first control valve and the second control valve are integrally integrated to form a double alternating switch valve 41. The double alternating switch valve 41 can realize the switching of the foaming and drainage functions by rotating the valve core.

[0086] Specifically, as shown in FIG. 6, the double alternating switch valve 41 includes a valve body 411, a valve core 412 and a valve cover 413. The valve body 411 is provided with a first control valve cavity 4111 and a second control valve cavity 4112. The first control valve cavity 4111 is connected to the water inlet end of the first control valve, and the second control valve cavity 4112 is connected to the water inlet end of the second control valve. The valve core 412 is rotatably arranged in the valve body 411, and is provided with a first control valve cavity 4121 and a second control valve cavity 4122. The first control valve cavity 4121 is connected to the output end of the first control valve, and the second control valve cavity 4122 is connected to the output end of the second control valve. The valve cover 413 is arranged on the valve body 411, and is provided with a first control valve cavity 4131 and a second control valve cavity 4132. The first control valve cavity 4131 is connected to the output end of the first control valve, and the second control valve cavity 4132 is connected to the output end of the second control valve. Figures 6-9As shown, the double-alternate switch valve 41 comprises a valve body 411 and a double valve core 412. The valve body 411 is provided with a main water inlet 413, a main water outlet 414, a secondary water inlet 415 and a secondary water outlet 416. The double valve core 412 is rotatably connected in the valve body 411 and can be switched between a first state and a second state.

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

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

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

[0090] In order to realize better sealing effect, in the embodiment, the double valve core 412 comprises a rotating part 4121 rotatable therewith, and the valve body 411 is provided with a fixed part 4111. The rotating part 4121 and the fixed part 4111 are tightly attached, and both are preferably ceramic parts. Of course, in order to enhance the sealing performance, sealing grooves (not shown in the figure) surrounding the main water inlet 413, the main water outlet 414, the secondary water inlet 415 and the secondary water outlet 416, and surrounding the first communication groove 4122 and the second communication groove 4123 can also be respectively arranged on the opposite surfaces of the rotating part 4121 and the fixed part 4111, and sealing rings (not shown in the figure) are arranged in the sealing grooves.

[0091] The main water inlet 413, the main water outlet 414, the secondary water inlet 415 and the secondary water outlet 416 are all arranged on the surface of the fixed part 4111 facing the rotating part 4121. The first communication groove 4122 and the second communication groove 4123 are arranged on the surface of the rotating part 4121 facing the fixed part 4111. The rotating part 4121 is switched between the first state and the second state by rotation.

[0092] First state: in the first state, the first communication groove 4122 connects the main water inlet 413 and the main water outlet 414, and simultaneously disconnects the secondary water inlet 415 and the secondary water outlet 416.

[0093] The second state: in the second state, the second communication groove 4123 communicates the secondary water inlet 415 and the secondary water outlet 416, and simultaneously disconnects the primary water inlet 413 and the primary water outlet 414.

[0094] In order to ensure the normal supply of cleaning liquid, in the embodiment, the input port of the soap bottle 451 is connected to the liquid inlet pipe 12, and a third one-way valve 4511 is arranged therebetween to prevent the backflow of cleaning liquid to the liquid inlet pipe. The liquid outlet pipe 13 of the hydraulic displacement pump is connected to the mixing cavity 42, and a fourth one-way valve 134 is arranged therebetween to prevent the backflow of liquid in the mixing cavity to the liquid outlet pipe. The water inlet pipe 21 of the hydraulic displacement pump and the primary water outlet 414 are connected through the driving water path 211 to provide driving water for the hydraulic displacement pump. The water outlet pipe 22 of the hydraulic displacement pump and the secondary water inlet 415 are connected through the first water drainage path 221 to drain away the water discharged by the hydraulic displacement pump.

[0095] In order to realize efficient gas-liquid exchange, in the embodiment, the air supplement assembly 43 comprises 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 cavity 42. The gas-liquid exchange container 431 and the primary water outlet 414 are connected through a water delivery pipe 433. The bottom of the gas-liquid exchange container 431 and the secondary water inlet 415 are connected through a second water drainage path 434. The gas-liquid exchange container 431 exchanges gas and liquid by using water flow, and delivers gas to the mixing cavity 42 through the gas delivery pipe 432.

[0096] In order to ensure the air circulation inside the gas-liquid exchange container 431, in the embodiment, the top of the gas-liquid exchange container 431 is provided with an air supplement hole 435, and a fifth one-way valve 4351 is arranged in the air supplement 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 concentration of foam, in the embodiment, the gas delivery pipe 432 is provided with a gas adjusting valve 4321 for adjusting the amount of air. By adjusting the opening degree of the gas adjusting valve 4321, the amount of gas entering the mixing cavity 42 can be adjusted, thereby adjusting the concentration of foam.

[0098] As shown in Figure 5 In order to facilitate the user to adjust or maintain the gas adjusting valve 4321, in the embodiment, the surface of the shower main body 3 is provided with a first maintenance opening 3a, and the gas adjusting valve 4321 is detachably connected at the first maintenance opening 3a.

[0099] As shown in Figure 5 In order to facilitate the user to adjust or maintain the first water constant flow valve 2111, in the embodiment, the surface of the shower main body 3 is further provided with a second maintenance opening 3b, and the first water constant flow valve 2111 is detachably connected at the second maintenance opening 3b.

[0100] In order to ensure the stability of the water flow of the water supplement pipeline 44, in the embodiment, the second water constant flow valve 441 is arranged on the water supplement pipeline 44. Of course, in order to facilitate the user to adjust or maintain the second water constant flow valve 441, preferably, the third maintenance opening (not shown in the figure) is further arranged on the surface of the shower main body 3, and the second water constant flow valve 441 can be detachably installed in the third maintenance opening.

[0101] In summary, the present application provides a simple structure, energy saving, environmental protection, convenient to use, pure water driven shower foaming device, which can effectively solve the defects existing in the prior art, and has a broad application prospect.

Claims

1. A hydraulic displacement pump characterized by, The utility model relates to a water hydraulic volumetric pump, comprising: a pump body (1) having a pump cavity (11); an elastic isolation sleeve (2) arranged in the pump cavity (11) and separating the pump cavity (11) into a working cavity (111) for containing liquid to be pumped and a driving cavity (112) for containing driving liquid; a liquid inlet pipe (12) and a liquid outlet pipe (13) communicating with the working cavity (111) for the inlet and outlet of the liquid to be pumped; a water inlet pipe (21) and a water outlet pipe (22) communicating with the driving cavity (112) for the inlet and outlet of the driving liquid, the elastic isolation sleeve (2) being deformed by hydraulic driving to change the volume of the working cavity (111) and realize the pumping function; wherein the water inlet pipe (21) is provided 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 comprises: a thimble type safety valve (23) arranged at the free end of the elastic isolation sleeve (2) and capable of communicating the driving cavity (112) with the liquid outlet pipe (13); a top pressure piece (14) arranged in the liquid outlet pipe (13) and extending into the working cavity (111) and located on the movement track of the free end of the elastic isolation sleeve (2); wherein when the free end of the elastic isolation sleeve (2) expands to a predetermined position, the thimble type safety valve (23) contacts and is opened by the top pressure piece (14) to realize pressure relief.

4. A hydraulic displacement pump according to claim 1, characterized in that: The utility model further comprises an elastic reset piece (24) connected to the elastic isolation sleeve (2), the elastic reset piece (24) elastically pressing or pulling the elastic isolation sleeve (2) in the direction of compressing the elastic isolation sleeve (2) to assist the reset of the elastic isolation sleeve (2).

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

6. A purely hydraulically driven shower foam device characterized by: The utility model relates to a shower body (3), the shower body (3) is provided with hot water inlet joint (31), cold water inlet joint (32), the temperature regulating valve (33) for adjusting the proportion of cold and hot water, the temperature regulating valve (33) output end is connected with foaming device (4) and shower assembly (5); the foaming device (4) includes the first control valve connected to the temperature regulating valve (33), and the mixing cavity (42) connected to the shower assembly (5) and used for mixing water, air and cleaning liquid to foam and output to the shower assembly (5), the mixing cavity (42) and the first control valve are provided with the air supplement assembly (43) driven by water flow to supplement gas, the water supplement pipeline (44) for providing water, and the soap supply structure (45) for providing cleaning liquid, the soap supply structure (45) includes a soap bottle (451) and a water hydraulic volumetric pump according to any one of claims 1-8. The shower foaming device further comprises a second control valve for controlling water drainage, a water inlet end of the second control valve being connected with the air supplementing assembly (43) and the hydraulic volume pump, and a water outlet end of the second control valve being capable of draining 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 integrally integrated to form a double alternating switch valve (41).

8. A hydraulically powered shower foam device according to claim 7, wherein: The double alternating switch valve (41) comprises a valve body (411) and a double valve core (412) rotatably connected in the valve body (411), the valve body (411) being provided with a main water inlet (413), a main water outlet (414), a secondary water inlet (415) and a secondary water outlet (416), and the double valve core (412) being selectively switched between a first state and a second state: In the first state, the double valve core (412) connects the main water inlet (413) and the main water outlet (414), and disconnects the secondary water inlet (415) and the secondary water outlet (416); In the second state, the main water inlet (413) and the main water outlet (414) are disconnected, and the secondary water inlet (415) and the secondary water outlet (416) are connected; The main water inlet (413) is connected with the temperature regulating valve (33), the main water outlet (414) supplies water to the air supplementing assembly (43), the water supplementing pipeline (44) and the soap supplying structure (45), the secondary water inlet (415) collects water from the air supplementing assembly (43) and the soap supplying structure (45), and the secondary water outlet (416) is used for water drainage; The double valve core (412) comprises a rotating part (4121) capable of rotating therewith, the valve body (411) is provided with a fixed part (4111), the rotating part (4121) and the fixed part (4111) are tightly attached, the main water inlet (413), the main water outlet (414), the secondary water inlet (415) and the secondary water outlet (416) are all arranged on a surface of the fixed part (4111) facing the rotating part (4121), a first communication groove (4122) and a second communication groove (4123) are arranged on a surface of the rotating part (4121) facing the fixed part (4111), and the rotating part (4121) is switched between the first state and the second state by rotation: In the first state, the first communication groove (4122) connects the main water inlet (413) and the main water outlet (414), and simultaneously disconnects the secondary water inlet (415) and the secondary water outlet (416); In the second state, the second communication groove (4123) connects the secondary water inlet (415) and the secondary water outlet (416), and simultaneously disconnects the main water inlet (413) and the main water 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 arranged between the two; the liquid outlet pipe (13) is connected to the mixing cavity (42), and a fourth one-way valve (134) is arranged between the two; the water inlet pipe (21) and the main water outlet (414) are connected through a driving water path (211), and the water outlet pipe (22) and the secondary water inlet (415) are connected through a first water drainage path (221); The air supplement assembly (43) comprises a gas-liquid exchange container (431), the top of the gas-liquid exchange container (431) is provided with a gas conveying pipe (432) leading to the mixing cavity (42), the gas-liquid exchange container (431) and the main water outlet (414) are connected through a water conveying pipe (433), and the bottom of the gas-liquid exchange container (431) and the secondary water inlet (415) are connected through a second water drainage path (434).

10. A hydraulically powered shower foam device according to claim 9, wherein: The gas conveying pipe (432) is provided with a gas adjusting valve (4321) for adjusting the air volume.

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

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

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