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

Abstract

The present invention discloses a novel flow control pump with a water path switching structure, comprising a pump head body and a pump cover. The pump head body is provided with a water inlet chamber, a pressurizing chamber, a water outlet chamber, and a vacuum chamber. The water outlet chamber is connected to the water outlet, the water inlet chamber is connected to the water inlet, the vacuum chamber is connected to the pressurizing chamber via a water inlet flow channel and a water inlet one-way structure, and the pressurizing chamber is connected to the water outlet chamber via a water outlet one-way structure. The water path connected by the water inlet chamber and the vacuum chamber is provided with a flow control component for controlling the sealing or conduction of the water path. The water outlet comprises a first water outlet and a second water outlet, the first water outlet being provided on the pump head body, and the second water outlet being provided on the valve cover. The water outlet chamber is provided with a switching structure connected to the flow control component, and the flow control component drives the switching structure to control the connection or sealing of the water path between the water outlet chamber and the first water outlet and the second water outlet, respectively. The present invention simplifies the water path structure of the drinking water purification system, thereby reducing the overall process cost of the system and the failure rate.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid transportation, and in particular to a novel flow control pump with a water channel switching structure and a drinking water purification system constituted by the pump. Background Art

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

[0003] In the current household water purifier system, most of them are divided into normal temperature water and cooling or heating water, and the two water paths are separated through the water outlet of the water supply pump, such as Figure 6 As shown, there are water paths for normal temperature water and water paths for cooling or heating, respectively. Solenoid valves are installed on the corresponding water paths, and the opening of the solenoid valves is controlled by the control panel, so that the water output at the faucet can be controlled as needed. In this system, a more complex piping distribution and more control components are required to realize its functions, which makes the process cost of the whole system higher, the system structure complex, and the failure rate is also higher. Summary of the Invention

[0004] The purpose of the present invention is to provide a new flow control pump with a water channel switching structure and the pure drinking system it constitutes, which is used to simplify the water channel structure of the pure drinking system, reduce the number of related control components used, and reduce the overall process cost of the system and the failure rate.

[0005] In order to solve the above technical problems, the present invention adopts the following solutions:

[0006] A new flow control pump with a water path switching structure comprises a pump head body and a pump cover, wherein the pump head body is provided with a water inlet chamber, a pressure boosting chamber, a water outlet chamber, and a vacuum chamber, the water outlet chamber is connected to the water outlet, the water inlet chamber is connected to the water inlet, the vacuum chamber is connected to the pressure boosting chamber in turn through the water inlet channel and the water inlet one-way structure, the pressure boosting chamber is connected to the water outlet chamber through the water outlet one-way structure, the water path where the water inlet chamber and the vacuum chamber are connected is provided with a flow control component for controlling the sealing or conduction of the water path, the water outlet comprises a first water outlet and a second water outlet, the first water outlet is provided on the pump head body, the second water outlet is provided on the pump cover, the water outlet chamber is provided with a switching structure connected to the flow control component, the flow control component drives the switching structure to control the connection or sealing of the water path between the water outlet chamber and the first water outlet and the second water outlet respectively.

[0007] Compared with the prior art, the water supply pump in the existing pure drinking system has only one water outlet end, and it is necessary to connect two water channels from the water outlet end to the faucet, and install corresponding solenoid valve control components on different water channels. This makes the water channel structure of the pure drinking system more complicated and has more control components. The flow control pump in the present invention is provided with a first water outlet on the pump head body and a second water outlet on the pump cover. One of the water outlets can be used as a water supply port for hot water, and the other as a water supply port for cold water. When the flow control pump is not working, the flow control component controls the water channel seal between the water inlet chamber and the vacuum chamber. When the flow control pump is working, the boosting chamber is squeezed under the drive of the motor, 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 chamber 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 conduction The smaller the flow rate after, the smaller the flow rate is, and 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 state of conduction or sealing between the water outlet chamber 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 chamber is sealed with the first water outlet and conducted with the second water outlet. When the voltage increases and exceeds the set value, the water outlet chamber 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 outlets can be adjusted. Applying it to the pure drinking system can simplify the waterway structure and reduce the number of control components used in the corresponding waterway, thereby reducing the process cost, and reducing the failure rate of the entire pure drinking system accordingly, and the control structure is also relatively simple.

[0008] Preferably, the flow control component includes a control rod, a return spring, a sensing diaphragm, and a diaphragm pressure plate. The upper end of the control rod passes through the diaphragm pressure plate and is connected. The periphery of the sensing diaphragm is sealed and fixed between the pump head body and the pump cover. An atmospheric cavity is formed between the sensing diaphragm and the pump cover, and an atmospheric hole that leads to the atmospheric cavity is provided on the pump cover. A flow limiting groove is provided on the side wall of the control rod; a first sealing ring, a support collar, and a second sealing ring are provided in sequence below the flow limiting groove in the circumference of the control rod, the support collar is provided with a water inlet groove connected to the water inlet, a compression collar for pressing the first sealing ring, the support collar, and the second sealing ring is provided on the bottom wall of the vacuum chamber, a pad is provided in the middle of the sensing diaphragm to press it, 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 chamber, and the return spring, the control rod forms a flow control component that seals or leads the water path between the water inlet and the vacuum chamber, and the lower end or the upper 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 forces exerted on the sensing diaphragm by the pressure in the vacuum chamber and the elastic force of the return spring is greater than the force exerted on the sensing diaphragm by the air pressure in the atmospheric chamber, and the control rod seals the water path between the water inlet groove and the vacuum chamber under the joint action of the above forces; 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 forces exerted on the sensing diaphragm by the pressure in the vacuum chamber and the elastic force of the return spring is less than the force exerted on the sensing diaphragm by the air pressure in the atmospheric chamber, and the control rod moves downward (in the direction of the water inlet chamber) under the joint action of the above forces. The side wall of the control rod is provided with a flow limiting groove, which means that the lower end of the control rod has no flow limiting groove, and the side wall above the lower end and below the diaphragm pressure plate is provided with a flow limiting groove. The part of the lower end of the control rod without the flow limiting groove moves completely downward to the upper end of the water inlet groove. When it continues to move downward, the water inlet is connected to the vacuum chamber through the flow limiting groove. When the control rod's flow-limiting groove just moves down to the upper end of the water inlet groove, the flow path connecting the water inlet through the flow-limiting groove and the vacuum chamber is small, and the flow rate of the flow-controlled pump will be small. If the control rod continues to move downward, and the portion of the control rod with the flow-limiting groove moves down beyond the lower end of the water inlet groove, the flow path area connecting the water inlet through the flow-limiting groove and the vacuum chamber will increase, and the flow rate of the flow-controlled pump will increase. Therefore, by adjusting the operating voltage (power) of the flow-controlled pump, the vacuum level in the vacuum chamber can be adjusted, and then the distance the control rod is moved downward can be adjusted to adjust the output flow of the flow-controlled pump.

[0010] Preferably, the lower end of the control rod is connected to the switching structure, and the switching structure is set as a first switching rod. The first switching rod and the middle part of the control rod are provided with water outlet channels connected to the second water outlet and the water outlet cavity respectively. The periphery of the lower end of the first switching rod is sealed with the inner wall of the water outlet cavity through a third sealing ring. The first switching rod moves up and down under the action of the control rod to form a switching structure that controls the connection or sealing of the water channel between the water outlet cavity 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 working, when its operating voltage is lower than the set value, the part of the first switching rod with the third sealing ring is located below the bottom surface of the first water outlet. At this time, the water path between the water outlet chamber and the first water outlet is blocked, and the water outlet chamber and the second water outlet are connected through the water outlet flow channel. As the operating voltage increases, the control rod drives the first switching rod to move downward. When the lower end of the first switching rod, that is, the water inlet end of the water inlet flow channel contacts the water outlet one-way structure, the water inlet flow channel is sealed by the water outlet one-way structure, and the water path between the water outlet chamber and the second water outlet is blocked. At this time, the part of the first switching rod with the third sealing ring leaves its sealed matching The control rod moves upward and drives the lower end of the first switching rod to disengage from the one-way water outlet structure, and the water outlet chamber is connected to the second water outlet. At this time, the part with the third sealing ring on the first switching rod is just located in the matching cavity, blocking the water path between the water outlet chamber and the first water outlet. In this way, by adjusting the voltage of the flow control pump, the control rod is moved up and down, and then the first switching rod is moved up and down to form a switching structure for controlling the connection or sealing of the water path between the water outlet chamber and the first water outlet and the second water outlet respectively.

[0012] Preferably, the upper end of the control rod is connected to the switching structure, and the switching structure is set as a second switching rod. The side wall of the second switching rod is provided with a water flow groove. The periphery of the upper end of the second switching rod is sealed with the inner wall of the pump cover through a fourth sealing ring. The pump head body and the side of the pump cover are connected with a side cover. The first flow channel, the second flow channel, and the third flow channel connected to the water outlet chamber are formed between the side cover and the pump head body and the pump cover. The first flow channel, the second flow channel, and the third flow channel are connected in sequence. The second switching rod moves up and down under the action of the control rod to form a switching structure that controls the connection or sealing of the water channel between the third flow channel and the first water outlet and the second water outlet respectively.

[0013] Due to the adoption of the above technical solution, when the flow control pump is working, when its working voltage is lower than the set value, the part with the fourth sealing ring on the second switching rod is located above the top surface of the third flow channel, so that the water path between the third flow channel and the first water outlet is blocked. At this time, the third flow channel is connected to the second water outlet through the water trough. As the voltage of the flow control pump increases, the control rod continues to move downward. When the part with the fourth sealing ring on the second switching rod moves downward to below the top surface of the third flow channel, the top of the water trough is located below the bottom surface of the third flow channel. The third flow channel is connected to the first water outlet, and the third flow channel is blocked from the second water outlet. In this way, by adjusting the voltage of the flow control pump, the control rod is moved up and down, and then the second switching rod is moved up and down to form a switching structure for controlling the connection or sealing of the water path between the third flow channel and the first water outlet and the second water outlet respectively.

[0014] Preferably, a fifth sealing ring is pressed against the end surface of the side cover that contacts the pump head body and the pump cover.

[0015] A drinking water purification system composed of the above-mentioned new flow control pump with a water path switching structure also 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 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 via a three-way joint, the second water outlet of the flow control pump is connected to the water inlet of the heating / cooling unit, and the water outlet of the heating / cooling unit is connected to the faucet via a three-way joint. By applying the flow control pump of the present invention to the drinking water purification system, the flow control pump has two water outlets due to its own structure, and it only needs to connect the two water outlets to the faucet respectively. The flow control pump can control the water paths of different water outlets to act as cold water and hot water pipelines respectively. Compared with the existing drinking water purification system, the system pipeline distribution is simplified, the amount of solenoid valves used 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 reduced accordingly.

[0016] The present invention has the beneficial effects:

[0017] 1. By applying the flow control pump of the present invention to the drinking water purification system, the flow control pump has two water outlets because of its own structure. It only needs to connect the two water outlets to the faucets respectively. The water channels of different water outlets can be controlled by the flow control pump. Compared with the existing drinking water purification system, the system pipeline distribution is simplified, the amount of solenoid valves used is reduced, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of CC;

[0020] Figure 3 This is a schematic structural diagram of Example 4;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of DD;

[0022] Figure 5 This is a schematic structural diagram of Example 5;

[0023] Figure 6 This is a structural diagram of the existing pure drinking system.

[0024] Figure numerals: 01-first water outlet, 02-second water outlet, 03-boosting chamber, 04-pump head body, 05-water inlet chamber, 06-water outlet chamber, 07-water inlet, 08-vacuum chamber, 09-water inlet channel, 10-pump cover, 11-control rod, 12-reset spring, 13-sensing diaphragm, 14-diaphragm pressure plate, 15-atmospheric chamber, 16-atmospheric hole, 17-flow limiting groove, 18-first switching rod, 19-water outlet channel, 20-third sealing ring, 21-first sealing ring, 22-support collar, 23-second sealing ring, 24-water inlet groove, 25- Compression ring, 26-pad, 27-second switching rod, 28-water trough, 29-fourth sealing ring, 30-side cover, 31-first flow channel, 32-second flow channel, 33-third flow channel, 34-fifth sealing ring, 35-water outlet one-way diaphragm, 36-water inlet one-way diaphragm, 37-sixth sealing ring, 38-fixing plate, 39-water inlet end, 40-purification unit, 41-heating / cooling unit, 42-faucet, 43-control panel, 44-flow control pump, 45-first solenoid valve, 46-second solenoid valve, 47-water supply pump, 48-seventh sealing ring. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0027] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "having," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0028] Example 1

[0029] like Figure 1-2As shown, a new flow control pump 44 with a water path switching structure includes a pump head body 04 and a pump cover 10 sealed and connected to the pump head body 04. The pump head body 04 is provided with a water inlet chamber 05, a boosting chamber 03, a water outlet chamber 06, and a vacuum chamber 08. The water outlet chamber 06 is connected to the water outlet, the water inlet chamber 05 is connected to the water inlet 07, and the vacuum chamber 08 is connected to the boosting chamber 03 through the water inlet channel 09 and the water inlet one-way structure in turn. The boosting chamber 03 is connected to the water outlet chamber 06 through the water outlet one-way structure. The water path connected to the water chamber 05 and the vacuum chamber 08 is provided with a flow control component that controls the sealing or conduction of the water path. The water outlet includes a first water outlet 01 and a second water outlet 02. The first water outlet 01 is horizontally arranged on the pump head body 04, and the second water outlet 02 is vertically arranged on the pump cover 10. A switching structure connected to the flow control component is provided in the water outlet chamber 06. The flow control component drives the switching structure to control the connection or sealing of the water path between the water outlet chamber 06 and the first water outlet 01 and the second water outlet 02 respectively.

[0030] The flow control pump 44 in the present invention is provided with a first water outlet 01 on the pump head body 04, and a second water outlet 02 on the pump cover 10. One of the water outlets can be used as a water supply port for normal temperature water, and the other as a water supply port for hot water or cold water. When the flow control pump 44 is not working, the flow control component controls the sealing of the water path between the water inlet chamber 05 and the vacuum chamber 08. When the flow control pump 44 is working, the boost chamber 03 is squeezed under the drive of the motor, so that the water flow or air in the vacuum chamber 08 is sucked away to form a certain vacuum degree. At this time, the flow control component controls the conduction of the water path between the water inlet chamber 05 and the vacuum chamber 08, and the flow rate after conduction is related to the vacuum degree in the vacuum chamber 08. 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 44 can adjust the vacuum degree in the vacuum chamber 08 when the flow control pump 44 is working. By adjusting the working voltage (power) of the flow control pump 44, the output flow of the flow control pump 44 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 chamber 06 and the first water outlet 01 and the second water outlet 02. The working voltage of the flow control pump 44 is provided with a set value. When the working voltage is less than the set value, the water outlet chamber 06 is sealed with the first water outlet 01 and conductive with the second water outlet 02. When the voltage increases and exceeds the set value, the water outlet chamber 06 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, the water output from different water outlets can be adjusted. Applying it to the pure drinking system can simplify the water path structure and reduce the number of control components used in the corresponding water path, thereby reducing the process cost, and reducing the failure rate of the entire pure drinking system accordingly. The control structure is also relatively simple.

[0031] Example 2

[0032] like Figure 1 and3 As shown, the flow control assembly includes a control rod 11, a return spring 12, a sensing diaphragm 13, and a diaphragm pressure plate 14. The upper end of the control rod 11 passes through the diaphragm pressure plate 14 and is connected. The periphery of the sensing diaphragm 13 is sealed and fixed between the pump head body 04 and the pump cover 10. An atmospheric cavity 15 is formed between the sensing diaphragm 13 and the pump cover 10, and an atmospheric hole 16 is provided on the pump cover 10 to connect to the atmospheric cavity 15. A flow limiting groove 17 is provided on the side wall of the control rod 11; a first sealing ring 21, a support collar 22, and a second sealing ring 23 are sequentially provided on the circumference of the control rod 11 and are located below the flow limiting groove 17. The support collar 22 is provided with a water inlet groove 2 connected to the water inlet 07. 4. A compression ring 25 for compressing the first sealing ring 21, the supporting ring 22, and the second sealing ring 23 is provided on the inner bottom wall of the vacuum chamber 08. A pad 26 for compressing the sensing diaphragm 13 is provided in the middle thereof. One end of the return spring 12 acts on the diaphragm pressure plate 14, and the other end acts on the inner wall of the vacuum chamber 08. The control rod 11 forms a flow control component for sealing or conducting the water channel between the water inlet 07 and the vacuum chamber 08 under the joint action of the air pressure in the atmospheric chamber 15, the pressure in the vacuum chamber 08, and the return spring 12. The lower end or the upper end of the control rod 11 is connected to the switching structure.

[0033] When the flow control pump 44 is not working, the sum of the force exerted on the sensing diaphragm 13 by the pressure in the vacuum chamber 08 and the elastic force of the return spring 12 is greater than the force exerted on the sensing diaphragm 13 by the air pressure in the atmospheric chamber 15. The control rod 11 seals the water path between the water inlet tank 24 and the vacuum chamber 08 under the combined action of the above forces. When the flow control pump 44 is working, the water or air in the vacuum chamber 08 is sucked away to form a certain vacuum degree. At this time, the sum of the force exerted on the sensing diaphragm 13 by the pressure in the vacuum chamber 08 and the elastic force of the return spring 12 is less than the pressure in the atmospheric chamber 15. The air pressure in the air cavity 15 exerts a force on the sensing diaphragm 13, and the control rod 11 moves downward (in the direction of the water inlet chamber 05) under the combined action of the above forces. The side wall of the control rod 11 is provided with a flow limiting groove 17, which means that the lower end of the control rod 11 does not have a flow limiting groove 17, and the side wall above the lower end and below the diaphragm pressure plate 14 is provided with a flow limiting groove 17. The part of the lower end of the control rod 11 without the flow limiting groove 17 moves completely downward to the upper end of the water inlet groove 24, and when it continues to move downward, the water inlet 07 is connected to the vacuum chamber 08 through the flow limiting groove 17. When the flow-limiting groove 17 of the control rod 11 has just moved down to the upper end of the water inlet groove 24, the flow passage connecting the water inlet 07 through the flow-limiting groove 17 and the vacuum chamber 08 is small, and the flow rate pumped out by the flow control pump 44 will be small. If the control rod 11 continues to move downward, the portion of the control rod 11 with the flow-limiting groove 17 moves down beyond the lower end of the water inlet groove 24, and the flow passage area connecting the water inlet 07 through the flow-limiting groove 17 and the vacuum chamber 08 will increase, the flow rate pumped out by the flow control pump 44 will increase. Therefore, by adjusting the operating voltage (power) of the flow control pump 44, the vacuum level in the vacuum chamber 08 can be adjusted, and then the distance the control rod 11 moves downward can be adjusted to adjust the output flow rate of the flow control pump 44.

[0034] Example 3

[0035] like Figure 1-2 As shown, the lower end of the control rod 11 is connected to the switching structure, and the switching structure is set as a first switching rod 18. The first switching rod 18 and the middle of the control rod 11 are provided with a water outlet channel 19 connected to the second water outlet 02 and the water outlet cavity 06 respectively. The first switching rod 18 and the control rod 11 are designed as a whole. The water outlet channel 19 runs through the first switching rod 18 and the middle position of the control rod 11 at the same time. In this embodiment, the upper end of the control rod 11 extends above the diaphragm pressure plate 14, and a slideway allowing the control rod 11 to slide is provided in the pump cover 10. The channel is connected to the second water outlet 02, and a cavity is provided in the pump head body 04 to allow the first switching rod 18 to slide. The cavity matches the sealing structure at the lower end of the control rod 11, and the cavity is connected to the water outlet cavity 06 and the first water outlet 01 at the same time. The periphery of the lower end of the first switching rod 18 is sealed with the inner wall of the cavity through a third sealing ring 20. The first switching rod 18 moves up and down under the action of the control rod 11 to form a switching structure that controls the connection or sealing of the water channel between the water outlet cavity 06 and the first water outlet 01 and the second water outlet 02 respectively.

[0036] In this embodiment, when the flow control pump 44 is working, when its working voltage is lower than the set value, the part of the first switching rod 18 with the third sealing ring 20 is located below the bottom surface of the first water outlet 01, and the lower end of the first switching rod 18 is still in its sliding cavity. At this time, the water path between the water outlet cavity 06 and the first water outlet 01 is blocked, and the water outlet cavity 06 and the second water outlet 02 are connected through the water outlet channel 19. As the working voltage increases, the control rod 11 drives the first switching rod 18 to move downward. When the lower end of the first switching rod 18, that is, the water inlet end 39 of the water outlet channel 19 contacts the surface of the water outlet one-way diaphragm 35, the water outlet channel 19 is sealed by the water outlet one-way diaphragm 35, and the water path between the water outlet cavity 06 and the second water outlet 02 is blocked. At this time, the part of the first switching rod 18 with the third sealing ring 20 leaves its sealed cavity. , and completely enters the water outlet chamber 06. Since the water flow area of ​​the water outlet chamber 06 is larger than the water flow area of ​​the cavity, the water outlet chamber 06 is connected to the first water outlet 01. When the voltage of the flow control pump 44 is reduced, the vacuum degree in the vacuum chamber 08 is reduced, causing the control rod 11 to move upward and drive the lower end of the first switching rod 18 to disengage from the water outlet one-way structure, and the water outlet chamber 06 is connected to the second water outlet 02. At this time, the part of the first switching rod 18 with the third sealing ring 20 is just located in the matching cavity, blocking the water path between the water outlet chamber 06 and the first water outlet 01. In this way, by adjusting the voltage of the flow control pump 44, the control rod 11 is moved up and down, and then the first switching rod 18 is moved up and down to form a switching structure for controlling the connection or sealing of the water paths between the water outlet chamber 06 and the first water outlet 01 and the second water outlet 02 respectively.

[0037] Example 4

[0038] like Figure 3-4 As shown, the upper end of the control rod 11 is connected to the switching structure, and the switching structure is set to a second switching rod 27. The side wall of the second switching rod 27 is provided with a water groove 28. The periphery of the upper end of the second switching rod 27 is sealed with the inner wall of the inner cavity of the pump cover 10 through a fourth sealing ring 29. The fourth sealing ring 29 is located above the water groove 28. The pump head body 04 and the pump cover 10 are connected to the side of the side cover 30. The first flow channel 31, the second flow channel 32, and the third flow channel 33 connected to the water outlet cavity 06 are formed between the side cover 30 and the pump head body 04 and the pump cover 10. The first flow channel 31, the second flow channel 32, and the third flow channel 33 are connected to the water outlet cavity 06. The second flow channel 32 and the third flow channel 33 are connected in sequence to form a U-shaped structure opening to the right. The second switching rod 27 moves up and down under the action of the control rod 11 to form a switching structure for controlling the connection or sealing of the water channel between the third flow channel 33 and the first water outlet 01 and the second water outlet 02 respectively. In this embodiment, the control rod 11 is circumferentially sleeved with a sixth sealing ring 37, and the sixth sealing ring 37 is pressed and fixed in the groove set on the bottom surface of the pump cover 10 by the fixing plate 38 to prevent the source water from leaking into the atmospheric cavity 15 from the installation gap between the control rod 11 and the pump cover 10.

[0039] In this embodiment, when the flow control pump 44 is working, when its operating voltage is lower than the set value, the part of the second switching rod 27 with the fourth sealing ring 29 is located above the top surface of the third flow channel 33, so that the water path between the third flow channel 33 and the first water outlet 01 is blocked. At this time, the third flow channel 33 is connected to the second water outlet 02 through the water groove 28. As the voltage of the flow control pump 44 increases, the control rod 11 continues to move downward. When the part of the second switching rod 27 with the fourth sealing ring 29 moves downward to below the top surface of the third flow channel 33, the top of the water groove 28 is located below the bottom surface of the third flow channel 33. The third flow channel 33 is connected to the first water outlet 01, and the third flow channel 33 is blocked from the second water outlet 02. In this way, by adjusting the voltage of the flow control pump 44, the control rod 11 is moved up and down, and then the second switching rod 27 is moved up and down to form a switching structure for controlling the connection or sealing of the water paths between the third flow channel 33 and the first water outlet 01 and the second water outlet 02 respectively.

[0040] The end surface of the side cover 30 that contacts the pump head body 04 and the pump cover 10 is tightly pressed with a fifth sealing ring 34 .

[0041] The water outlet one-way structure is a water outlet one-way diaphragm 35 , and the water inlet one-way structure is a water inlet one-way diaphragm 36 .

[0042] Example 5

[0043] like Figure 5As shown, a drinking water purification system composed of the above-mentioned new flow control pump 44 with a water channel switching structure also includes a purification unit 40, a heating / cooling unit 41, a faucet 42 and a control panel 43. The control surface may be provided with a hot water button and / or a cold water button, a normal temperature water button, and a start / stop button for controlling the water outlet selection of the faucet 42. The water inlet end of the purification unit 40 is connected to the water inlet pipe, and the water outlet end of the purification unit 40 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 42 through a three-way joint, and the second water outlet 02 of the flow control pump 44 is connected to the water inlet end of the heating / cooling unit 41, and the water outlet end of the heating / cooling unit 41 is connected to the faucet 42 through a three-way joint. By applying the flow control pump 44 of the present invention to the pure drinking system, the flow control pump 44 has two water outlets because of its own structure, and it only needs to connect the two water outlets to the faucet 42 respectively. The water channels of different water outlets can be controlled by the flow control pump 44. Compared with the existing pure drinking system, the system pipeline distribution is simplified, the use of solenoid valves is reduced, 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 also reduced accordingly.

[0044] The working principle of the present invention is as follows: when the flow control pump 44 is working, the sum of the pressure in the vacuum chamber 08 and the elastic force of the return spring 12 acting on the sensing diaphragm 13 is less than the force of the air pressure in the atmospheric chamber 15 on the sensing diaphragm 13. The control rod 11 moves downward under the combined action of the above forces, and the control rod 11 drives the switching rod to move downward. The sealing ring structure at the lower end of the switching rod changes the on-off state between the first water outlet 01, the second water outlet 02 and the water outlet channel 19, so that the two water outlets are not connected at the same time, which controls the flow control. The pump 44 is applied to the pure drinking system, and both water outlets are connected to the faucet 42. A heating / cooling unit 41 is connected to the connecting pipe 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 42 is controlled. The water channels of different water outlets can be controlled by the flow control pump 44. Compared with the existing pure drinking system, a certain number of solenoid valves are eliminated, 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 also reduced accordingly.

[0045] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A new flow control pump with a water path switching structure, comprising a pump head body (04) and a pump cover (10), wherein the pump head body (04) is provided with a water inlet chamber (05), a pressure chamber (03), a water outlet chamber (06), and a vacuum chamber (08), wherein the water outlet chamber (06) is connected to the water outlet, the water inlet chamber (05) is connected to the water inlet (07), the vacuum chamber (08) is connected to the pressure chamber (03) through the water inlet channel (09) and the water inlet one-way structure, and the pressure chamber (03) is connected to the water outlet chamber (06) through the water outlet one-way structure, and a flow control component for controlling the sealing or conduction of the water path is provided on the water path connected by the water inlet chamber (05) and the vacuum chamber (08), wherein the flow control component is provided on the water path connected by the water inlet chamber (05) and the vacuum chamber (08), and the flow control component is provided on the water path connected by the water inlet chamber (05) and the vacuum chamber (08), and the flow control component is provided on the water path The water outlet comprises a first water outlet (01) and a second water outlet (02), the first water outlet (01) being arranged on the pump head body (04), and the second water outlet (02) being arranged on the pump cover (10), a switching structure connected to the flow control component being arranged in the water outlet cavity (06), and the flow control component driving the switching structure to control the connection or sealing of the water path between the water outlet cavity (06) and the first water outlet (01) and the second water outlet (02); The flow control assembly includes a control rod (11), a return spring (12), a sensing diaphragm (13), and a diaphragm pressure plate (14). The upper end of the control rod (11) passes through the diaphragm pressure plate (14) for connection. The periphery of the sensing diaphragm (13) is sealed and fixed between the pump head body (04) and the pump cover (10). An atmospheric cavity (15) is formed between the sensing diaphragm (13) and the pump cover (10), and an atmospheric hole (16) is provided on the pump cover (10) for conducting the atmospheric cavity (15). A flow limiting groove (17) is provided on the side wall of the control rod (11). A first sealing ring (21), a support collar (22), and a second sealing ring (23) are sequentially provided on the circumference of the control rod (11) and are located below the flow limiting groove (17). The support collar (22) is provided with a A water inlet groove (24) connected to the water inlet (07) is provided on the inner bottom wall of the vacuum chamber (08) with a compression ring (25) for compressing the first sealing ring (21), the support ring (22), and the second sealing ring (23); a pad (26) for compressing the sensing diaphragm (13) is provided in the middle; one end of the return spring (12) acts on the diaphragm pressure plate (14), and the other end acts on the inner wall of the vacuum chamber (08); the control rod (11) forms a flow control component for sealing or conducting the water path between the water inlet (07) and the vacuum chamber (08) under the combined action of the air pressure in the atmospheric chamber (15), the pressure in the vacuum chamber (08), and the return spring (12); The lower end of the control rod (11) is connected to the switching structure, and the switching structure is set as a first switching rod (18). The first switching rod (18) and the middle part of the control rod (11) are provided with a water outlet channel (19) respectively connected to the second water outlet (02) and the water outlet cavity (06). The periphery of the lower end of the first switching rod (18) is sealed with the inner wall of the water outlet cavity (06) through a third sealing ring (20). The first switching rod (18) moves up and down under the action of the control rod (11) to form a switching structure for controlling the connection or sealing of the water channel between the water outlet cavity (06) and the first water outlet (01) and the second water outlet (02).

2. A new flow control pump with a water path switching structure, comprising a pump head body (04) and a pump cover (10), wherein the pump head body (04) is provided with a water inlet chamber (05), a pressure chamber (03), a water outlet chamber (06), and a vacuum chamber (08), wherein the water outlet chamber (06) is connected to the water outlet, the water inlet chamber (05) is connected to the water inlet (07), the vacuum chamber (08) is connected to the pressure chamber (03) through the water inlet channel (09) and the water inlet one-way structure, and the pressure chamber (03) is connected to the water outlet chamber (06) through the water outlet one-way structure, and a flow control component for controlling the sealing or conduction of the water path is provided on the water path connected by the water inlet chamber (05) and the vacuum chamber (08), wherein the flow control component is provided on the water path connected by the water inlet chamber (05) and the vacuum chamber (08), and the flow control component is provided on the water path connected by the water inlet chamber (05) and the vacuum chamber (08), and the flow control component is provided on the water path The water outlet comprises a first water outlet (01) and a second water outlet (02), the first water outlet (01) being arranged on the pump head body (04), and the second water outlet (02) being arranged on the pump cover (10), a switching structure connected to the flow control component being arranged in the water outlet cavity (06), and the flow control component driving the switching structure to control the connection or sealing of the water path between the water outlet cavity (06) and the first water outlet (01) and the second water outlet (02); The flow control assembly includes a control rod (11), a return spring (12), a sensing diaphragm (13), and a diaphragm pressure plate (14). The upper end of the control rod (11) passes through the diaphragm pressure plate (14) and is connected. The periphery of the sensing diaphragm (13) is sealed and fixed between the pump head body (04) and the pump cover (10). An atmospheric cavity (15) is formed between the sensing diaphragm (13) and the pump cover (10), and an atmospheric hole (16) is provided on the pump cover (10) to conduct the atmospheric cavity (15). A flow limiting groove (17) is provided on the side wall of the control rod (11). The control rod (11) is provided with a first sealing ring (21) located below the flow limiting groove (17) in sequence along the circumference. , a support ring (22), a second sealing ring (23), a water inlet groove (24) connected to the water inlet (07) is provided on the support ring (22), a pressing ring (25) for pressing the first sealing ring (21), the support ring (22), and the second sealing ring (23) is provided on the bottom wall of the vacuum chamber (08), and a pad (26) for pressing the sensing diaphragm (13) is provided in the middle; one end of the return spring (12) acts on the diaphragm pressure plate (14), and the other end acts on the inner wall of the vacuum chamber (08), and the control rod (11) is in the atmospheric chamber (15 ) under the joint action of the internal air pressure of the vacuum chamber (08), the internal pressure of the vacuum chamber (08), and the return spring (12), a flow control component is formed to seal or conduct the water path between the water inlet (07) and the vacuum chamber (08), the upper end of the control rod (11) is connected to the water path switching structure, and the water path switching structure is set as a second switching rod (27), and the side wall of the second switching rod (27) is provided with a water groove (28), and the upper end periphery of the second switching rod (27) is sealed with the inner wall of the pump cover (10) through a fourth sealing ring (29), and the pump head body (04) and the pump cover (10) are connected to the side A side cover (30) is provided. A first flow channel (31), a second flow channel (32), and a third flow channel (33) are formed between the side cover (30), the pump head body (04), and the pump cover (10). The first flow channel (31), the second flow channel (32), and the third flow channel (33) are connected in sequence. The second switching rod (27) moves up and down under the action of the control rod (11) to form a water channel switching structure for controlling the connection or sealing of the water channel between the third flow channel (33) and the first water outlet (01) and the second water outlet (02).

3. A new flow control pump with a waterway switching structure according to claim 2, characterized in that: The end surface of the side cover (30) in contact with the pump head body (04) and the pump cover (10) is tightly pressed with a fifth sealing ring (34).

4. A drinking water purification system comprising a novel flow control pump with a water channel switching structure according to any one of claims 1 to 3, characterized in that: The invention comprises a purification unit (40), a heating / cooling unit (41), a faucet (42) and a control panel (43), wherein the purification unit (40) is connected to a water inlet pipe, the water outlet of the purification unit (40) is connected to a water inlet (07) of a flow control pump (44), the first water outlet (01) of the flow control pump (44) is connected to the faucet (42) via a three-way joint, the second water outlet (02) of the flow control pump (44) is connected to the water inlet of the heating / cooling unit (41), and the water outlet of the heating / cooling unit (41) is connected to the faucet (42) via a three-way joint.

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