A flow control pump with a water path switching structure and a water purification and drinking system composed thereof

Abstract

The present invention discloses a flow control pump with a water path switching structure, which includes a pump head body. A pressurization chamber, a water outlet chamber, and a vacuum chamber are provided in the pump head body. The water outlet chamber is communicated with the water outlet on the pump head body, and the vacuum chamber is connected to the water inlet. The vacuum chamber is sequentially connected to the pressurization chamber through a water inlet flow path and a water inlet one-way structure. The pressurization chamber is connected to the water outlet chamber through a water outlet flow path and a water outlet one-way structure. A flow control component for controlling the sealing or conduction of this water path is provided on the water path where the water inlet and the vacuum chamber are connected. The water outlet includes a first water outlet and a second water outlet. A switching structure connected to the flow control component is provided in the water outlet chamber. The flow control component drives the switching structure to control the connection or sealing of the water path between the water outlet flow path and the first water outlet and the second water outlet respectively. When applied to a water purifier system, the present invention eliminates a certain number of solenoid valves and simplifies the water path structure, thereby reducing the process cost and correspondingly reducing the failure rate.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid transportation, and particularly relates to a flow control pump with a water path switching structure and a water purification system composed thereof. Background Art

[0002] With the development of the economy, more and more household water purifiers have entered thousands of households.

[0003] In the current household water purifier system, most are divided into a normal temperature water path and a refrigerating or heating water path. Two water paths are branched out from the water outlet of the water supply pump. As Figure 6 shown, they are respectively a normal temperature water path and a refrigerating or heating water path. Solenoid valves are respectively installed on the corresponding water paths, and then the opening of the solenoid valves is controlled through a control panel, so that the water outlet at the faucet can be controlled as needed; in such a system, relatively complex pipeline distribution and more control components are required to realize its functions, which makes the process cost of the whole system relatively high, the system structure is complex, and the failure rate is also relatively high. Summary of the Invention

[0004] The purpose of the present invention is to provide a flow control pump with a water path switching structure and a water purification system composed thereof, which is used to simplify the water path structure of the water purification system, reduce the number of control components used, and reduce the process cost and failure rate of the system.

[0005] To solve the above technical problems, the present invention adopts the following solutions:

[0006] A flow control pump with a water path switching structure includes a pump head body. A pressurizing chamber, a water outlet chamber, and a vacuum chamber are arranged in the pump head body. The water outlet chamber is communicated with the water outlet on the pump head body, and the vacuum chamber is connected to the water inlet. The vacuum chamber is sequentially connected to the pressurizing chamber through a water inlet flow path and a water inlet one-way structure. The pressurizing chamber is connected to the water outlet chamber through a water outlet flow path and a water outlet one-way structure. A flow control component for controlling the sealing or conduction of this water path is arranged on the water path where the water inlet and the vacuum chamber are connected. The water outlet includes a first water outlet and a second water outlet. A switching structure connected to the flow control component is arranged in the water outlet chamber. The flow control component drives the switching structure to control the connection or sealing of the water path between the water outlet flow path and the first water outlet and the second water outlet respectively.

[0007] Compared with the existing water supply pump, the existing water supply pump has only one water outlet end. When it is applied to the water purifier system, it is necessary to connect two water channels from the water outlet end to the faucet, and install corresponding solenoid valves on different water channels, which makes the water channel structure of the water purifier system more complicated. The flow control pump in the present invention has a first water outlet and a second water outlet, one of which can be used as a water supply port for normal temperature water, and the other as a water supply port for cold water or hot water. When the flow control pump is not working, the flow control component controls the sealing of the water channel between the water inlet and the vacuum chamber. When the flow control pump is working, the booster chamber is squeezed, so that the water flow or air in the vacuum chamber is sucked away to form a certain vacuum degree. At this time, the flow control component controls the conduction of the water channel between the water inlet and the vacuum chamber, and the flow rate after conduction is related to the vacuum degree in the vacuum chamber. The higher the vacuum degree, the greater the flow rate after conduction, and the smaller the vacuum degree, the smaller the flow rate after conduction. Adjusting the working voltage (power) of the flow control pump can adjust the vacuum degree in the vacuum chamber when the flow control pump is working. By adjusting the working voltage (power) of the flow control pump, the output flow rate of the flow control pump when it is working can be adjusted. The action of the flow control component causes the switching structure to change the conductive or sealed state of the water outlet channel and the first water outlet and the second water outlet. The working voltage of the flow control pump is provided with a set value. When the working voltage is less than the set value, the water outlet channel is sealed with the first water outlet and conductive with the second water outlet. When the voltage increases to exceed the set value, the water outlet channel is connected with the first water outlet and sealed with the second water outlet. In this way, by adjusting the working voltage of the flow control pump, the water outlet of different water channels can be adjusted. Applying it to the water purifier system can simplify the water channel structure and reduce the number of control components used in the corresponding water channel, thereby reducing the process cost and reducing the failure rate of the entire water purifier system accordingly.

[0008] Preferably, the flow control component includes a control rod, a return spring, a sensing diaphragm, and a diaphragm pressure plate. The control upper end is connected to the bottom surface of the diaphragm pressure plate, the peripheral seal of the sensing diaphragm is fixed between the pump head body and the valve cover, an atmospheric cavity is formed between the sensing diaphragm and the valve cover, and an atmospheric hole connected to the atmospheric cavity is provided on the valve cover; a flow limiting groove is provided on the side wall of the control rod, and a first sealing ring, a supporting ring, and a second sealing ring located below the flow limiting groove are provided in sequence in the circumference of the control rod, a water inlet groove connected to the water inlet is provided on the supporting ring, and a clamping ring for clamping the first sealing ring, the supporting ring, and the second sealing ring is provided on the bottom wall of the vacuum chamber; one end of the return spring acts on the diaphragm pressure plate, and the other end acts on the inner wall of the vacuum chamber. Under the joint action of the air pressure in the atmospheric cavity, the pressure in the vacuum cavity, and the return spring, the control rod forms a flow control component that seals or conducts the water path between the water inlet and the vacuum chamber, and the lower end of the control rod is connected to the switching structure.

[0009] Due to the adoption of the above technical solution, when the flow control pump is not working, the sum of the pressure in the vacuum chamber and the acting force of the return spring on the induction diaphragm is greater than the acting force of the air pressure in the atmosphere chamber on the induction diaphragm. Under the combined action of the above acting forces, the control rod seals the waterway between the water inlet chamber and the vacuum chamber; when the flow control pump is working, the water or air in the vacuum chamber is sucked away, forming a certain degree of vacuum. At this time, the sum of the pressure in the vacuum chamber and the acting force of the return spring on the induction diaphragm is less than the acting force of the air pressure in the atmosphere chamber on the induction diaphragm. Under the combined action of the above acting forces, the control rod moves downward (in the direction of the water inlet chamber). The side wall of the control rod is provided with a flow limiting groove, which means that the lower end of the control rod is not provided with a flow limiting groove. The side wall above the lower end and below the diaphragm pressing plate is provided with a flow limiting groove. The part of the lower end of the control rod without a flow limiting groove moves completely downward to the upper end of the water inlet chamber. When it continues to move downward, at this time, the water inlet chamber is connected to the vacuum chamber through the flow limiting groove. When the flow limiting groove of the control rod just moves down to the upper end of the water inlet chamber, the flow channel through which the water inlet is connected to the vacuum chamber through the flow limiting groove is smaller at this time, and the flow rate pumped out by the flow control pump will be smaller. If the control rod continues to move downward, the part of the control rod with a flow limiting groove moves down beyond the lower end of the water inlet chamber, then the flow channel area through which the water inlet is connected to the vacuum chamber through the flow limiting groove will increase, and the flow rate pumped out by the flow control pump will increase. Therefore, by adjusting the working voltage (power) of the flow control pump, the magnitude of the vacuum in the vacuum chamber can be adjusted, and further the downward movement distance of the control rod can be adjusted, so as to achieve the function of adjusting the output flow rate of the flow control pump.

[0010] Preferably, the switching structure is arranged as a switching rod. The upper end of the switching rod is connected to the control rod. The periphery of the lower end of the switching rod is hermetically connected to the water outlet chamber through a third sealing ring. The third sealing ring is arranged in an annular groove provided at the lower end of the switching rod. The water outlet flow channel is arranged as a first water outlet flow channel and a second water outlet flow channel that are mutually communicated. The first water outlet flow channel is communicated with the pressurization chamber through a water outlet one-way structure. The second water outlet flow channel is connected to the water outlet chamber. The switching rod moves up and down under the action of the control rod to form a switching structure for controlling the connection or sealing of the waterway between the second water outlet flow channel and the first water outlet and the second water outlet respectively.

[0011] Due to the adoption of the above technical solution, when the flow control pump is not working, the control rod does not move. At this time, the waterway between the water inlet and the vacuum chamber is sealed. When the flow control pump is working, the waterway between the water inlet and the vacuum chamber is conducted, and the source water enters the vacuum chamber, and then enters the pressurization chamber through the water inlet flow channel and the water inlet one-way structure. The source water in the pressurization chamber is squeezed into the first water outlet flow channel and the second water outlet flow channel. At this time, the second water outlet flow channel is conducted with the second water outlet. As the voltage of the flow control pump increases, the degree of vacuum in the vacuum chamber increases, and the downward displacement of the control rod is greater. As a result, the switching rod moves downward along the water outlet chamber, so that the switching rod seals the waterway between the second water outlet flow channel and the second water outlet, and makes the second water outlet flow channel conduct with the first water outlet. In this way, by adjusting the voltage of the flow control pump, the switching rod can control the conduction or sealing of the waterways of the two water outlets.

[0012] Preferably, the water outlet channel is arranged as a vertical third water outlet channel. An outlet water tank formed by the pump head body is provided at the bottom of the water outlet cavity. The outlet water tank is communicated with the second water outlet. A protrusion matching the outlet water tank is provided downward at the lower end of the switching rod. The lower end of the protrusion is conical. The circumferential direction of the protrusion seals the outlet water tank through a fourth sealing ring.

[0013] Due to the above technical solution, by providing a protrusion at the lower end of the switching rod, and the shape of the protrusion matches that of the outlet water tank. When the protrusion moves down into the outlet water tank, the outlet water tank is hermetically separated from the water outlet cavity. In this way, the water path between the third water outlet channel and the second water outlet is sealed, enabling the third water outlet channel to be communicated with the first water outlet. Similarly, the connection or sealing of the water paths of the two water outlets is changed by the up and down movement of the switching rod.

[0014] Preferably, it further includes a purification unit, a heating / cooling unit, a faucet and a control panel. The purification unit is connected to the water inlet pipe. The water outlet end of the purification unit is connected to the water inlet of the flow control pump. The first water outlet of the flow control pump is connected to the faucet through a three-way joint. The second water outlet of the flow control pump is connected to the water inlet end of the heating / cooling unit. The water outlet end of the heating / cooling unit is connected to the faucet through a three-way joint. By applying the flow control pump of the present invention to the pure water dispenser system, since the flow control pump has two water outlets due to its own structure, only the two water outlets need to be respectively connected to the faucet. Through this flow control pump, the water paths of different water outlets can be controlled to act as normal temperature water and refrigerated or hot water paths respectively. Compared with the existing pure water dispenser system, the pipeline distribution of the system is simplified, the usage amount of electromagnetic valves is reduced, and the water path structure is also simplified. In this way, its process cost is reduced, the structure of the system is simplified, and its failure rate is also correspondingly reduced.

[0015] The beneficial effects of the present invention are:

[0016] 1. By applying the flow control pump of the present invention to the pure water dispenser system, since the flow control pump has two water outlets due to its own structure, only the two water outlets need to be respectively connected to the faucet. Through this flow control pump, the water paths of different water outlets can be controlled. Compared with the existing pure water dispenser system, the pipeline distribution of the system is simplified, the usage amount of electromagnetic valves is reduced, and the water path structure is also simplified. In this way, its process cost is reduced, the structure of the system is simplified, and its failure rate is also correspondingly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is Figure 1 the schematic structural diagram of A-A in

[0019] Figure 3Schematic structural diagram of Embodiment 4;

[0020] Figure 4 is Figure 3 Schematic structural diagram of B-B in;

[0021] Figure 5 Schematic structural diagram of Embodiment 5;

[0022] Figure 6 is the structural diagram of an existing pure water drinking system.

[0023] Reference numerals: 01 - first water outlet, 02 - second water outlet, 03 - first water flow channel, 04 - atmosphere chamber, 05 - second water flow channel, 06 - plug, 07 - water inlet, 08 - pump head body, 09 - induction diaphragm, 10 - valve cover, 11 - air hole, 12 - diaphragm pressing plate, 13 - return spring, 14 - third sealing ring, 15 - switching rod, 16 - support collar, 17 - vacuum chamber, 18 - compression collar, 19 - current limiting groove. 20 - control rod, 21 - first sealing ring, 22 - water inlet groove, 23 - second sealing ring, 24 - water outlet chamber, 25 - water inlet flow channel, 26 - fourth sealing ring, 27 - water outlet groove, 28 - water outlet check valve flap, 29 - water outlet hole, 30 - push frame, 31 - eccentric part, 32 - output shaft, 33 - motor, 34 - central column, 35 - base, 36 - support frame, 37 - booster diaphragm, 38 - booster chamber, 39 - partition board, 40 - water inlet hole, 41 - water inlet check valve flap, 42 - third water flow channel, 43 - purification unit, 44 - flow control pump, 45 - heating / cooling unit, 46 - faucet, 47 - control panel, 48 - water supply pump, 49 - first solenoid valve, 50 - second solenoid valve. Detailed implementation manners

[0024] The present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings, but the implementation manners of the present invention are not limited thereto.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] As Figures 1-4 shown, a flow control pump 44 with a water path switching structure includes a pump head body 08. A pressurization chamber 38, a water outlet chamber 24, and a vacuum chamber 17 are arranged in the pump head body 08. The water outlet chamber 24 is in communication with the water outlet on the pump head body 08, and the vacuum chamber 17 is connected to the water inlet 07. The vacuum chamber 17 is sequentially connected to the pressurization chamber 38 through a water inlet flow path 25 and a water inlet one-way structure. The pressurization chamber 38 is connected to the water outlet chamber 24 through a water outlet flow path and a water outlet one-way structure. A flow control component for controlling the sealing or conduction of this water path is arranged on the water path where the water inlet 07 and the vacuum chamber 17 are connected. The water outlet includes a first water outlet 01 and a second water outlet 02. A switching structure connected to the flow control component is arranged in the water outlet chamber 24. The flow control component drives the switching structure to control the connection or sealing of the water path between the water outlet flow path and the first water outlet 01 and the second water outlet 02 respectively.

[0029] The flow control pump 44 of the present invention has a first water outlet 01 and a second water outlet 02, one of which can be used as a water supply port for a cooling or heating unit, and the other as a water supply port for normal temperature water; when the flow control pump 44 is not working, the flow control component controls the water path seal between the water inlet 07 and the vacuum chamber 17; when the flow control pump 44 is working, the motor 33 at the bottom of the flow control pump 44 starts to operate, and the boosting chamber 38 is composed of a boosting diaphragm 37, and the periphery of the boosting diaphragm 37 is pressed and fixed by a support frame 36, and the support frame 36 passes through the base 3 at the bottom of the pump head body 08 5 is pressed tightly, the motor 33 is fixed on the base 35, the lower end of the booster diaphragm 37 is connected to the push frame 30, the lower end of the push frame 30 is connected to the center column 34, the center column 34 is inclined and the lower end is movably connected to the eccentric piece 31, the eccentric piece 31 is connected to the output shaft 32 of the motor 33, the rotation of the motor 33 makes the push frame 30 squeeze the booster diaphragm 37, so that the booster chamber 38 is squeezed, so that the water flow or air in the vacuum chamber 17 is sucked away to form a certain vacuum degree, at this time, the flow control component controls the water path between the water inlet 07 and the vacuum chamber 17 The flow rate after conduction is related to the vacuum degree in the vacuum chamber 17. The higher the vacuum degree, the greater the flow rate after conduction, and the smaller the vacuum degree, the smaller the flow rate after conduction. By adjusting the working voltage (power) of the flow control pump 44, the vacuum degree in the vacuum chamber 17 when the flow control pump 44 is working can be adjusted. By adjusting the working voltage (power) of the flow control pump 44, the output flow rate of the flow control pump 44 when working can be adjusted. The action of the flow control component causes the switching structure to change the conduction or sealing between the water outlet flow channel and the first water outlet 01 and the second water outlet 02. The working voltage of the flow control pump 44 is set to a set value. When the working voltage is less than the set value, the water outlet channel is sealed with the first water outlet 01 and connected with the second water outlet 02. When the voltage increases and exceeds the set value, the water outlet channel is connected with the first water outlet 01 and sealed with the second water outlet 02. In this way, by adjusting the working voltage of the flow control pump 44, different water outlets can be adjusted. Applying it to the water purifier system can save more water channel structures and their control components, reduce the process cost, and reduce the failure rate accordingly.

[0030] Example 2

[0031] like Figures 1-2As shown in the figure, the flow control component includes a control rod 20, a return spring 13, an induction diaphragm 09, and a diaphragm pressing plate 12. The upper end of the control rod is connected to the bottom surface of the diaphragm pressing plate 12. The periphery of the induction diaphragm 09 is hermetically fixed between the pump head body 08 and the valve cover 10. An air chamber 04 is formed between the induction diaphragm 09 and the valve cover 10, and an air hole 11 for communicating with the air chamber 04 is provided on the valve cover 10. A flow limiting groove 19 is provided on the side wall of the control rod 20. A first sealing ring 21, a support collar, and a second sealing ring 23 are sequentially arranged in the circumferential direction of the control rod 20 below the flow limiting groove 19. An inlet groove 22 communicating with the water inlet 07 is provided on the support collar. A pressing collar 18 for pressing the first sealing ring 21, the support collar, and the second sealing ring 23 is provided on the inner bottom wall of the vacuum chamber 17. One end of the return spring 13 acts on the diaphragm pressing plate 12, and the other end acts on the inner wall of the vacuum chamber 17. The control rod 20 forms a flow control component that seals or conducts the waterway between the water inlet 07 and the vacuum chamber 17 under the combined action of the air pressure in the air chamber 04, the pressure in the vacuum chamber 17, and the return spring 13. The lower end of the control rod 20 is connected to the switching structure.

[0032] When the flow control pump 44 is not working, the sum of the forces exerted on the induction diaphragm 09 by the pressure in the vacuum chamber 17 and the elastic force of the return spring 13 is greater than the force exerted on the induction diaphragm 09 by the air pressure in the air chamber 04. The control rod 20 seals the waterway between the inlet groove 22 and the vacuum chamber 17 under the combined action of the above forces. When the flow control pump 44 is working, the water or air in the vacuum chamber 17 is sucked away, forming a certain degree of vacuum. At this time, the sum of the forces exerted on the induction diaphragm 09 by the pressure in the vacuum chamber 17 and the elastic force of the return spring 13 is less than the force exerted on the induction diaphragm 09 by the air pressure in the air chamber 04. The control rod 20 moves downward (in the direction of the water inlet chamber) under the combined action of the above forces. The flow limiting groove 19 provided on the side wall of the control rod 20 means that there is no flow limiting groove 19 at the lower end of the control rod 20, and the flow limiting groove 19 is provided on the side wall above the lower end and below the diaphragm pressing plate 12. When the part of the control rod 20 without the flow limiting groove 19 at the lower end completely moves downward to the upper end of the inlet groove 22 and then continues to move downward, at this time, the water inlet 07 is connected to the vacuum chamber 17 through the flow limiting groove 19. When the flow limiting groove 19 of the control rod 20 just moves downward to the upper end of the inlet groove 22, the flow path through which the water inlet 07 is connected to the vacuum chamber 17 through the flow limiting groove 19 is relatively small at this time, and the flow rate pumped out by the flow control pump 44 will be relatively small. If the control rod 20 continues to move downward and the part of the control rod 20 with the flow limiting groove 19 moves downward beyond the lower end of the inlet groove 22, the flow path area through which the water inlet 07 is connected to the vacuum chamber 17 through the flow limiting groove 19 will increase, and the flow rate pumped out by the flow control pump 44 will increase. Therefore, by adjusting the working voltage (power) of the flow control pump 44, the size of the vacuum in the vacuum chamber 17 can be adjusted, and then the downward movement distance of the control rod 20 can be adjusted, so as to achieve the function of adjusting the output flow rate of the flow control pump 44.

[0033] Embodiment 3

[0034] As shown Figures 1-2 in the figure, the switching structure is set as a switching rod 15. The upper end of the switching rod 15 is connected to the control rod 20. The periphery of the lower end of the switching rod 15 is hermetically connected to the water outlet cavity 24 through a third sealing ring 14. The third sealing ring 14 is arranged in an annular groove provided at the lower end of the switching rod 15. The water outlet flow path is set as a first water outlet flow path 03 and a second water outlet flow path 05 that are mutually connected. The first water outlet flow path 03 is connected to the pressurizing cavity 38 through a water outlet one-way structure. The second water outlet flow path 05 is connected to the water outlet cavity 24. The switching rod 15 moves up and down under the action of the control rod 20 to form a switching structure for controlling the connection or sealing of the water path between the second water outlet flow path 05 and the first water outlet 01 and the second water outlet respectively.

[0035] When the flow control pump 44 does not work, the control rod 20 does not move. At this time, the water path between the water inlet 07 and the vacuum cavity 17 is sealed. When the flow control pump 44 works, the water path between the water inlet 07 and the vacuum cavity 17 is conducted, and the source water enters the vacuum cavity 17, and then enters the pressurizing cavity 38 through the water inlet flow path 25, the water inlet hole 40 on the partition plate 39, and the water inlet one-way valve flap 41. The source water in the pressurizing cavity 38 is extruded and enters the first water outlet flow path 03 and the second water outlet flow path 05 through the water outlet hole 29 and the water outlet one-way valve flap 28. The first water outlet flow path 03 is vertically arranged and is perpendicular to the second water outlet flow path 05. At this time, the lower end of the switching rod 15 is located between the second water outlet flow path 05 and the first water outlet 01, and the second water outlet flow path 05 is connected to the second water outlet 02. As the voltage of the flow control pump 44 increases, the vacuum degree of the vacuum cavity 17 increases, and the displacement of the control rod 20 moving downward is greater. Thus, the switching rod 15 moves downward along the water outlet cavity 24, so that the lower end of the switching rod 15 is located between the second water outlet flow path 05 and the second water outlet 02. The lower end of the switching rod 15 seals the water path between the second water outlet flow path 05 and the second water outlet 02 through the third sealing ring 14, and makes the second water outlet flow path 05 communicate with the first water outlet 01. In this way, by adjusting the voltage of the flow control pump 44, the switching rod 15 can control the connection or sealing of the water paths of the two water outlets.

[0036] Embodiment 4

[0037] As shown Figures 3-4 in the figure, the water outlet flow path is set as a vertical third water outlet flow path 42. A water outlet groove 27 formed by the main body of the pump head 08 is provided at the bottom of the water outlet cavity 24. The water outlet groove 27 is connected to the second water outlet 02. The lower end of the switching rod 15 is provided with a protrusion matching the water outlet groove 27 downward. The lower end of the protrusion is conical, and the circumference of the protrusion seals the water outlet groove 27 through a fourth sealing ring 26.

[0038] By providing a protrusion at the lower end of the switching rod 15, the bottom end of the protrusion is conical, the shape of the protrusion matches that of the water outlet groove 27, and a fourth sealing ring 26 is sleeved on the protrusion to enhance the sealing performance of the water outlet groove 27. When the protrusion moves down into the water outlet groove 27, the waterway between the water outlet groove 27 and the water outlet cavity 24 is sealed off. In this way, the waterway between the third water outlet flow channel 42 and the second water outlet 02 is sealed, enabling the third water outlet flow channel 42 to be connected to the first water outlet 01. When the voltage decreases, the vacuum degree in the vacuum cavity 17 decreases, causing the control rod 20 to drive the switching rod 15 to move upward. At this time, the part of the switching rod 15 sleeved with the third sealing ring 14 moves above the top end of the third water outlet flow channel 42, blocking the waterway between the third water outlet flow channel 42 and the first water outlet 01. At this time, the protrusion releases the seal of the water outlet groove 27, enabling the third water outlet flow channel 42 to be connected to the second water outlet 02. In this way, by moving the switching rod 15 up and down with another structure, the connection or sealing of the waterways of the two water outlets can be changed.

[0039] Embodiment 5

[0040] As Figure 5 shown, it further includes a purification unit 43, a heating / cooling unit 45, a faucet 46 and a control panel 47. The purification unit 43 is connected to the water inlet pipe. The purification unit 43 is a reverse osmosis membrane. The water outlet end of the purification unit 43 is connected to the water inlet 07 of the flow control pump 44. The first water outlet 01 of the flow control pump 44 is connected to the faucet 46 through a tee joint. The second water outlet 02 of the flow control pump 44 is connected to the water inlet end of the heating / cooling unit 45. The water outlet end of the heating / cooling unit 45 is connected to the faucet 46 through a tee joint. The control panel 47 is provided with a hot water button, a cold water button, and a start / stop button. By applying the flow control pump 44 of the present invention to the water purification and drinking system, the flow control pump 44 itself has two water outlets. Only by connecting the two water outlets to the hot water and cold water pipelines respectively, and by changing the voltage of the flow control pump 44, the waterways of different water outlets can be controlled to be connected to the cold water and hot water pipelines respectively. In this way, compared with the previous water purification and drinking system, a certain number of solenoid valves are saved, and at the same time, the waterway structure is simplified. In this way, the process cost is reduced, the structure of the system is simplified, and the failure rate is also correspondingly reduced.

[0041] The working principle of the present invention is as follows: when the flow control pump 44 is working, the sum of the force exerted on the sensing diaphragm 09 by the pressure in the vacuum chamber 17 and the elastic force of the return spring 13 is smaller than the force exerted on the sensing diaphragm 09 by the air pressure in the atmospheric chamber 04, and the control rod 20 moves downward under the combined action of the above forces, and the control rod 20 drives the switching rod 15 to move downward, and the on-off state between the first water outlet 01, the second water outlet 02 and the water outlet channel is changed through the sealing ring structure at the lower end of the switching rod 15, so that the two water outlets are not connected at the same time, and the flow control pump 44 should be When used in the drinking water purification system, the two water outlets are connected to the faucet 46, and a heating / cooling unit 45 is connected to the connecting pipeline of one of the water outlets. By controlling the voltage of the flow control pump 44, the conduction between different water channels and the faucet 46 is controlled. The flow control pump 44 can control the water channels of different water outlets to act as cold water and hot water pipelines respectively. Compared with the existing drinking water purification system, a certain number of solenoid valves are saved, and the water channel structure is also simplified. In this way, the process cost is reduced, the system structure is simplified, and the failure rate is correspondingly reduced.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A flow control pump with a water path switching structure, comprising a pump head body (08). A pressurization chamber (38), a water outlet chamber (24), and a vacuum chamber (17) are arranged in the pump head body (08). The water outlet chamber (24) is communicated with a water outlet on the pump head body (08), and the vacuum chamber (17) is connected to a water inlet (07). The vacuum chamber (17) is sequentially connected to the pressurization chamber (38) through a water inlet flow channel (25) and a water inlet one-way structure. The pressurization chamber (38) is connected to the water outlet chamber (24) through a water outlet flow channel and a water outlet one-way structure. A flow control component for controlling the sealing or conduction of the water path is arranged on the water path where the water inlet (07) and the vacuum chamber (17) are connected. It is characterized in that, The water outlet comprises a first water outlet (01) and a second water outlet (02); a switching structure connected to the flow control component is provided in the water outlet cavity (24); the flow control component drives the switching structure to control the connection or sealing of the water channel between the water outlet flow channel and the first water outlet (01) and the second water outlet (02); The switching structure is configured as a switching rod (15), the upper end of the switching rod (15) is connected to the control rod (20), the lower end of the switching rod (15) is sealed and connected to the water outlet chamber (24) via a third sealing ring (14), the third sealing ring (14) is arranged in an annular groove arranged at the lower end of the switching rod (15), the water outlet channel is configured as a first water outlet channel (03) and a second water outlet channel (05) which are connected to each other, the first water outlet channel (03) is connected to the boost chamber (38) via a water outlet one-way structure, and the second water outlet channel (05) is connected to the water outlet chamber (24), and the switching rod (15) moves up and down under the action of the control rod (20) to form a switching structure for controlling the connection or sealing of the water channel between the second water outlet channel (05) and the first water outlet (01) and the second water outlet (02) respectively; The flow control assembly comprises a control rod (20), a return spring (13), a sensing diaphragm (09), and a diaphragm pressure plate (12); the upper end of the control rod (20) is connected to the bottom surface of the diaphragm pressure plate (12); the periphery of the sensing diaphragm (09) is sealed and fixed between the pump head body (08) and the valve cover (10); an atmospheric cavity (04) is formed between the sensing diaphragm (09) and the valve cover (10); and an atmospheric hole (11) is provided on the valve cover (10) for communicating with the atmospheric cavity; a flow limiting groove (19) is provided on the side wall of the control rod (20); a first sealing ring (21), a support collar (16), and a second sealing ring (23) are sequentially provided on the circumference of the control rod (20) and are located below the flow limiting groove (19); and a support collar (16) and a second sealing ring (23) are provided on the support collar (16). A water inlet groove (22) connected to the water inlet (07) is provided, and a compression ring (18) for compressing a first sealing ring (21), a supporting ring (16), and a second sealing ring (23) is provided on the inner bottom wall of the vacuum chamber (17); one end of the return spring (13) acts on the diaphragm pressure plate (12), and the other end acts on the inner wall of the vacuum chamber (17); the control rod (20) forms a flow control component for sealing or conducting the water path between the water inlet (07) and the vacuum chamber (17) under the joint action of the air pressure in the atmospheric chamber (04), the pressure in the vacuum chamber (17), and the return spring (13); the lower end of the control rod (20) is connected to the switching structure.

2. The flow control pump with a waterway switching structure according to claim 1, characterized in that, The water outlet channel is configured as a vertical third water outlet channel (42); a water outlet groove (27) formed by a pump head body (08) is provided at the bottom of the water outlet chamber (24); the water outlet groove (27) is connected to the second water outlet (02); a protrusion matching the water outlet groove (27) is provided downwardly at the lower end of the switching rod (15); the lower end of the protrusion is conical; and the circumference of the protrusion seals the water outlet groove (27) via a fourth sealing ring (26).

3. A water purification and drinking system composed of a flow control pump with a water path switching structure according to any one of the above claims 1-2, characterized in that, It includes a purification unit (43), a heating / cooling unit (45), a faucet (46) and a control panel (47). The purification unit (43) is connected to the water inlet pipe. The water outlet end of the purification unit (43) is connected to the water inlet (07) of the flow control pump (44). The first water outlet (01) of the flow control pump (44) is connected to the faucet (46) through a tee joint. The second water outlet (02) of the flow control pump (44) is connected to the water inlet end of the heating / cooling unit (45). The water outlet end of the heating / cooling unit (45) is connected to the faucet (46) through a tee joint.

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