A back-suction valve and the water purifier system thereof

Abstract

This invention discloses a back-suction valve and a water purifier system thereof, including a valve body assembled with a motor. The valve body includes a housing and a side cover, with a receiving cavity formed within the valve body. The side cover has a first water inlet and a second water inlet communicating with the receiving cavity. It also includes a back-suction assembly located within the valve body and a driving component that drives the back-suction assembly to reciprocate and change the volume of the receiving cavity to perform water suction and pumping. The driving component is eccentrically connected to the output shaft of the motor. This invention effectively prevents water dripping from the faucet in the water purifier system. Residual water in the faucet's front-end pipe is drawn back and temporarily stored, eliminating the need for external discharge, thus significantly saving water resources and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of water purifier systems, specifically to a backflow valve and a water purifier system thereof. Background Technology

[0002] Current water purifier systems mainly consist of a water purifier, a heating tank, a shut-off valve, and a faucet. Source water enters the water purifier through a source water pipe, then flows into the heating tank via the shut-off valve. After heating, it is delivered to the faucet. Wastewater is discharged through the water purifier's drain pipe. The faucet is positioned above the top of the heating tank. After the system stops, residual water remains in the faucet's pipes. To prevent dripping from the faucet and water waste, current technology uses a pump to return and discharge this residual water. However, this also results in water waste and a poor user experience. Summary of the Invention

[0003] The purpose of this invention is to provide a back-suction valve and the water purifier system thereof, which can effectively prevent water dripping from the faucet in the water purifier system. It can temporarily store the residual water in the pipe at the front end of the faucet without discharging it to the outside, which can greatly save water resources and improve the user experience.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0005] A backflow valve includes a valve body assembled with a motor. The valve body includes a housing and a side cover. A receiving cavity is formed inside the valve body. The side cover is provided with a first water inlet and a second water inlet that are connected to the receiving cavity. The valve body also includes a backflow assembly located inside the valve body and a drive component that drives the backflow assembly to reciprocate and change the volume of the receiving cavity and to perform water suction and pumping. The drive component is eccentrically connected to the output shaft of the motor.

[0006] By adopting the above technical solution, a brand-new back-suction valve is provided, which mainly includes a valve body connected to a motor. The valve body is composed of a shell and a side cover. A receiving cavity for temporarily storing water is formed in the valve body. The output shaft of the motor is connected to a drive component. A back-suction component is installed in the valve body. The first water port and the second water port are both connected to the receiving cavity. The two water ports can be used as water inlet or water outlet depending on the working state of the back-suction valve. The rotation of the motor drives the drive component to rotate eccentrically through the output shaft. The eccentric rotation of the drive component causes the back-suction component to change the volume of the receiving cavity. When the volume is small, water is pumped out from the receiving cavity through the two water ports. When the volume is large, water is drawn in from the two water ports, realizing the functions of pumping and drawing water. The drawn water can be temporarily stored in the receiving cavity. When this back-suction valve is applied to a water purifier system, it can draw the residual water in the pipe at the front end of the faucet back to the receiving cavity for temporary storage, without direct discharge. This avoids water dripping from the faucet and reduces water waste. Users have a better experience after using this water purifier system.

[0007] Furthermore, the back-suction assembly includes a diaphragm and an elastic element. The diaphragm is circumferentially pressed between the side cover and the housing. The right side of the diaphragm and the side cover form the receiving cavity. One end of the elastic element acts on the diaphragm, and the other end acts on the side cover. The driving element is located on the left side of the diaphragm.

[0008] Furthermore, a partition is provided between the diaphragm and the drive component.

[0009] Furthermore, the elastic element is a return spring.

[0010] Furthermore, a roller is rotatably provided in the middle of the partition, and the roller contacts the driving component.

[0011] Furthermore, the driving component is a rotary push block, which is eccentrically connected to the output shaft. The rotation of the output shaft drives the rotary push block to rotate eccentrically and reciprocate, acting on the partition and changing the volume of the receiving cavity.

[0012] Furthermore, the top surface of the rotary push block is provided with a through hole located on one side of the output shaft, and the through hole extends through the rotary push block from top to bottom.

[0013] Furthermore, the top of the housing is provided with a suitable top cover.

[0014] A water purifier system includes a water purifier, a heating tank, and a faucet. The water inlet of the water purifier is connected to a powered water pipe, and the water outlet of the water purifier is connected to a shut-off valve. The water outlet of the shut-off valve is connected to the first inlet of a backflow valve, and the second inlet of the backflow valve is connected to a diverter valve. One outlet of the diverter valve is connected to the water inlet of the heating tank, and the other outlet is connected to the faucet. The water outlet of the heating tank is connected to the faucet, and an electrical control is provided at the faucet.

[0015] Furthermore, the water purifier is also equipped with a drain pipe, and a T-junction is provided at the junction of the heating tank, the diversion valve and the faucet.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. In this invention, the rotation of the motor drives the drive component to rotate eccentrically via the output shaft. The eccentric rotation of the drive component causes the back suction component to change the volume of the receiving cavity. When the volume decreases, water is pumped out from the receiving cavity through the two water outlets. When the volume increases, water is sucked in from the two water outlets, thus realizing the functions of pumping and sucking water. The sucked water can be temporarily stored in the receiving cavity. When this back suction valve is applied to the water purifier system, it can suck the residual water in the pipe at the front end of the faucet back into the receiving cavity for temporary storage, without direct discharge. This avoids water dripping from the faucet and reduces water waste. Users have a better experience after using the water purifier system.

[0018] 2. Rollers are rotatably mounted on the outer side of the partition. During the eccentric rotation of the drive component acting on the partition, the friction between the drive component and the partition is reduced, resulting in smoother eccentric rotation and higher efficiency of the back-suction pump. Simultaneously, the point contact between the drive component and the rollers reduces the contact area between the drive component and the partition, minimizing wear and extending the service life of the components.

[0019] 3. The drive component has a through hole, which can reduce the weight of the drive component, reduce material usage, save costs, and reduce the load on the motor, thus extending the service life of the motor. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the AA section;

[0022] Figure 3 This is a schematic diagram of a water purifier system.

[0023] Reference numerals: 01-Motor, 02-Output shaft, 03-House, 04-Roller, 05-Drive component, 06-Partition plate, 07-Top cover, 08-Elastic component, 09-Diaphragm, 10-First water inlet, 11-Second water inlet, 12-Side cover, 13-Receiving cavity, 14-Water purifier, 15-Source water pipe, 16-Backflow valve, 17-Drain pipe, 18-Stop valve, 19-Heating tank, 20-Control component, 21-Tee, 22-Faucet, 23-Diverter valve, 24-Through hole, 25-Mounting cavity, 26-Remote end. Detailed Implementation

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

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "longitudinal," "lateral," "horizontal," "inner," "outer," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1

[0028] A backflow valve includes a valve body assembled with a motor 01. The valve body includes a housing 03 and a side cover 12. A receiving cavity 13 is formed in the valve body. The side cover 12 is provided with a first water inlet 10 and a second water inlet 11 that are connected to the receiving cavity 13. The valve body also includes a backflow assembly located in the valve body and a drive component 05 that drives the backflow assembly to reciprocate to change the volume of the receiving cavity 13 and to perform water suction and pumping. The drive component 05 is eccentrically connected to the output shaft 02 of the motor 01.

[0029] In this embodiment, as Figure 1 As shown, a novel backflow valve 16 is provided, which mainly includes a valve body connected to a motor 01. The valve body is composed of a housing 03 and a side cover 12. A suitable top cover 07 is installed on the top of the housing 03. The side cover 12 is U-shaped. A cavity is formed inside the housing 03. The side cover 12 and the housing 03 form a cavity for installing a drive unit 05 and a backflow assembly. The backflow assembly divides the cavity into a mounting cavity 25 and a receiving cavity 13 distributed to the left and right. The mounting cavity 25 and the receiving cavity 13 are not interconnected. The mounting cavity 25 is used to install the drive unit 05, and the receiving cavity 13 is used to temporarily store water. The motor 01 is located below the housing 03. The output shaft 02 of the motor 01 is arranged upward and connected to the drive unit 05. The first water inlet 10 and the second water inlet 11 are located on the side wall of the side cover 12 and are both connected to the receiving cavity 13. When connected, both water inlets can be used as either inlet or outlet depending on the working state of the back suction valve 16. The rotation of motor 01 drives the drive component 05 to rotate eccentrically via output shaft 02. The eccentric rotation of drive component 05 causes the back suction assembly to change the volume of the receiving cavity 13. When the volume is small, water is pumped out from the receiving cavity 13 through the two water inlets. When the volume is large, water is sucked in from the two water inlets, realizing the functions of pumping and sucking water. The sucked water can be temporarily stored in the receiving cavity 13. When the back suction valve 16 is applied to the water purifier 14 system, it can suck the residual water in the front pipe of faucet 22 back into the receiving cavity 13 for temporary storage, without direct discharge. This avoids dripping water from faucet 22 and also reduces water waste. Users have a better experience after using the water purifier 14 system.

[0030] Example 2

[0031] Preferably, the back suction assembly includes a diaphragm 09 and an elastic element 08. The diaphragm 09 is circumferentially pressed between the side cover 12 and the housing 03. The right side of the diaphragm 09 and the side cover 12 form the receiving cavity 13. One end of the elastic element 08 acts on the diaphragm 09 and the other end acts on the side cover 12. The driving element 05 is located on the left side of the diaphragm 09.

[0032] Preferably, a partition plate 06 is provided between the diaphragm 09 and the drive component 05.

[0033] Preferably, the elastic element 08 is a return spring.

[0034] Preferably, a roller 04 is rotatably provided in the middle of the partition 06, and the roller 04 contacts the driving member 05.

[0035] Preferably, the driving component 05 is a rotary push block, which is eccentrically connected to the output shaft 02. The rotation of the output shaft 02 drives the rotary push block to rotate eccentrically and reciprocate, acting on the partition 06 and changing the volume of the receiving cavity 13.

[0036] Preferably, the top surface of the rotary push block is provided with a through hole 24 located on one side of the output shaft 02, and the through hole 24 penetrates the rotary push block from top to bottom.

[0037] Based on the above embodiments, such as Figure 1 and Figure 2As shown, the working principle of the back suction assembly is as follows: The back suction assembly mainly consists of a diaphragm 09 and a partition plate 06. The diaphragm 09 is elastic and is circumferentially pressed between the housing 03 and the side cover 12, thus forming a receiving cavity 13 between the diaphragm 09 and the side cover 12, and an installation cavity 25 between the diaphragm 09 and the housing 03. The elastic element 08 is a return spring, with one end acting on the right side of the diaphragm 09 and the other end acting on the inner wall of the side cover 12. A partition plate 06 is fixed on the left side of the diaphragm 09, which can be fixed by adhesive. The partition plate 06 has an isosceles trapezoidal cross-section and presses the diaphragm 09 to the right, causing the diaphragm 09 to bulge to the right. A rotary pusher is set in the installation cavity 25, and there is a certain distance between the rotary pusher and the side wall of the installation cavity 25. To prevent the rotary push block from jamming during rotation, the rotary push block has an approximately cylindrical structure. A roller 04 is rotatably engaged in the middle of the partition 06. The roller 04 is cylindrical and can rotate relative to the partition 06. The left side of the roller 04 can slightly extend beyond the left side of the partition 06, ideally by 1-2 mm. The contact point between the roller 04 and the rotary push block is tangential, forming a point contact. This reduces friction between the rotary push block and the partition 06 during eccentric rotation and compression, resulting in smoother eccentric rotation of the drive component 05. This improves the efficiency of the back suction pump and reduces the contact area between the drive component 05 and the partition 06, minimizing wear and extending component lifespan. A through hole 24, penetrating downwards through the push block, is provided at the top of the rotary push block. The through hole 24 has a crescent-shaped cross-section. This design saves material, reduces the mass of the rotary push block, and lowers the load on the motor 01. The output shaft 02 is driven to rotate by the motor 01. The output shaft 02 is eccentrically connected to the rotary push block. Under the action of the output shaft 02, the rotary push block rotates eccentrically. The far end 26 of the rotary push block (the end that is furthest from the output shaft 02) rotates clockwise and gradually approaches the roller 04, continuously squeezing the partition 06 until it reaches the position of the roller 04. During this process, the diaphragm 09 is squeezed by the partition 06 and the return spring is pressed to the right. The volume of the receiving cavity 13 decreases, squeezing the water in the receiving cavity 13 out from the two water outlets. As the rotary push block continues to rotate clockwise, the far end 26 of the rotary push block gradually moves away from the roller 04, releasing the pressure on the partition 06 until it is in the initial position. During this process, the diaphragm 09 is squeezed by the partition 06 and gradually decreases. The return spring gradually returns to the left and the diaphragm 09 gradually returns to its original shape under the action of the return spring. The volume increases, and water is sucked into the receiving cavity 13 from the two water outlets for temporary storage, realizing the effect of back suction.

[0038] Example 3

[0039] A water purifier system includes a water purifier 14, a heating tank 19, and a faucet 22. The water inlet of the water purifier 14 is connected to a power supply water pipe 15, and the water outlet of the water purifier 14 is connected to a shut-off valve 18. The water outlet of the shut-off valve 18 is connected to the first water inlet 10 of a backflow valve 16, and the second water inlet 11 of the backflow valve 16 is connected to a diverter valve 23. One outlet of the diverter valve 23 is connected to the water inlet of the heating tank 19, and the other outlet is connected to the faucet 22. The water outlet of the heating tank 19 is connected to the faucet 22, and a control component 20 is provided at the faucet 22.

[0040] Preferably, the water purifier 14 is also equipped with a drain pipe 17, a tee 21 is provided at the junction of the heating tank 19, the diversion valve 23 and the faucet 22, and the control component 20 is a physical button.

[0041] In this embodiment, as Figure 3As shown, the backflow valve 16 is installed in the water purifier 14 system, positioned between the shut-off valve 18 and the heating tank 19. The water purifier 14 is positioned at the front end of the shut-off valve 18. The inlet of the water purifier 14 is connected to the active water pipe 15. The water purifier 14 has its own drain pipe 17 for discharging wastewater. The outlet of the shut-off valve 18 is connected to the first port 10 of the backflow valve 16. The second port 11 of the backflow valve 16 is connected to the inlet of the diversion valve 23. One outlet of the diversion valve 23 is connected to the heating tank 19. The inlet end of the water heater 19 is connected to the faucet 22, and the outlet end of the diversion valve 23 is connected to the faucet 22. A three-way valve 21 is set at the junction of the outlet pipe of the heating tank 19, the outlet pipe of the diversion valve 23 and the faucet 22 to connect the three pipes. An electrical control is set at the faucet to control the action of each valve. This control method is a commonly used control method in the water purifier 14 system. It is generally implemented by a microcontroller or PLC, which will not be elaborated on here. When the faucet 22 is in normal use, the source water enters the water purifier 14 and is then transported by the shut-off valve 18 to the first inlet 10 of the backflow valve 16, and enters the receiving cavity 13. The motor 01 of the backflow valve 16 rotates, and through the eccentric rotation of the drive component 05, the diaphragm 09 is squeezed, reducing the volume of the receiving cavity 13. The purified water inside is pumped out from the first inlet 10 and the second inlet 11. Due to the obstruction of the shut-off valve 18, although some purified water is pumped out from the first inlet 10, it cannot return to the water purifier 14. Most of the purified water still flows out from the second inlet. The water is pumped to the diversion valve 23. The diversion valve 23, according to the instructions of the control unit 20, selects to supply water directly to the faucet 22 or to the heating tank 19. The purified water is then delivered to the heating tank 19 for heating, and the heated purified water is then delivered to the faucet 22 for the user to drink. When no water is needed at the faucet 22, the control unit 20 can activate the backflow valve 16 to draw residual water in the pipe at the front end of the faucet 22 back into the receiving chamber 13 for temporary storage. For later use, the water can be pumped back to the heating tank 19 or the faucet 22 according to the instructions of the control unit 20. Therefore, when this backflow valve 16 is applied to the water purifier 14 system, it can draw residual water in the pipe at the front end of the faucet 22 back into the receiving chamber 13 for temporary storage, eliminating the need for direct discharge. This avoids dripping water from the faucet 22 and reduces water waste, resulting in a better user experience with the water purifier 14 system.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A back-suction valve comprising a valve body assembled with an electric motor (01), said valve body comprising a housing (03) and a side cover (12), characterized in that, The valve body has a receiving cavity (13), and the side cover (12) is provided with a first water inlet (10) and a second water inlet (11) that are connected to the receiving cavity (13). It also includes a back suction assembly located in the valve body and a drive component (05) that drives the back suction assembly to reciprocate to change the volume of the receiving cavity (13) and to perform water suction and pumping. The drive component (05) is eccentrically connected to the output shaft (02) of the motor (01). The back suction assembly includes a diaphragm (09) and an elastic element (08). The diaphragm (09) is circumferentially pressed between the side cover (12) and the housing (03). The right side of the diaphragm (09) and the side cover (12) form the receiving cavity (13). One end of the elastic element (08) acts on the diaphragm (09) and the other end acts on the side cover (12). The driving element (05) is located on the left side of the diaphragm (09). A partition plate (06) is provided between the diaphragm (09) and the drive member (05); a roller (04) is rotatably provided in the middle of the partition plate (06), and the roller (04) contacts the drive member (05).

2. The backflow valve according to claim 1, characterized in that, The elastic element (08) is a return spring.

3. A backflow valve according to claim 1, characterized in that, The driving component (05) is a rotary push block, which is eccentrically connected to the output shaft (02). The output shaft (02) rotates to drive the rotary push block to rotate eccentrically and reciprocate to act on the partition (06) and change the volume of the receiving cavity (13).

4. A backflow valve according to claim 3, characterized in that, The top surface of the rotary push block is provided with a through hole (24) located on one side of the output shaft (02), and the through hole (24) passes through the rotary push block from top to bottom.

5. A backflow valve according to claim 1, characterized in that, The housing (03) is provided with a suitable top cover (07) on the top.

6. A water purifier system comprising the back-suction valve described in any one of claims 1-5, characterized in that, The device includes a water purifier (14), a heating tank (19), and a faucet (22). The water inlet of the water purifier (14) is connected to a power water pipe (15). The water outlet of the water purifier (14) is connected to a shut-off valve (18). The water outlet of the shut-off valve (18) is connected to the first water outlet (10) of the back suction valve (16). The second water outlet (11) of the back suction valve (16) is connected to a diverter valve (23). One outlet of the diverter valve (23) is connected to the water inlet of the heating tank (19), and the other outlet is connected to the faucet (22). The water outlet of the heating tank (19) is connected to the faucet (22). An electrical control (20) is provided at the faucet (22).

7. The water purifier system according to claim 6, characterized in that, The water purifier (14) is also equipped with a drain pipe (17), and a tee (21) is provided at the junction of the heating tank (19), the diversion valve (23) and the faucet (22).

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