Combination valve with backflow function and water purifier

Abstract

The embodiment of the utility model provides a combination valve with a backflow function and a water purifier, in one specific implementation mode, the combination valve comprises a valve body, the valve body is provided with a waste water inlet, a waste water outlet and a backwashing water opening used for receiving purified water; a first containing cavity and a second containing cavity are further included, the first containing cavity and the second containing cavity are formed in the valve body, the first containing cavity is communicated with the wastewater inlet, and the second containing cavity is communicated with the wastewater outlet and the backwashing water opening; the flushing channel is arranged in the valve body and is communicated with the second accommodating cavity and the first accommodating cavity; and the flow limiting channel is arranged in the valve body and is communicated with the first accommodating cavity and the wastewater outlet. According to the implementation mode, the flow limiting channel which is prone to being blocked is flushed through the back flushing water opening, the flushing channel is prevented from being blocked by the flow limiting channel structure, meanwhile, the whole valve body can be flushed, and the service life of the whole valve body is prolonged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of combination valves. More particularly, it relates to a combination valve with backflow function and a water purifier. BACKGROUND

[0002] In the prior art, the combination valve is an important component in the water purifier, which is usually installed at the waste water discharge port for adjusting and controlling the discharge amount of waste water. When the water purifier produces water, the water in the waste water channel of the RO (Reverse Osmosis) membrane filter core flows into the waste water inlet of the combination valve and only flows out to the waste water outlet through the flow limiting channel with smaller diameter on the combination valve. Under the flow limiting effect of the flow limiting channel, a higher pressure difference is formed on both sides of the RO membrane, and the filtered waste water ions are discharged to the combination valve through the waste water port of the RO membrane filter core. When the water production is completed, the water in the waste water port of the RO membrane filter core flows into the waste water inlet of the combination valve and is mainly discharged to the waste water outlet through the flushing channel with larger diameter to flush the combination valve.

[0003] However, when the water purifier combination valve is used in an environment with high hardness or poor water quality, the flow limiting channel of the valve body of the combination valve is easy to be fouled and blocked due to its small size, which causes the waste water to be unable to be discharged and the RO membrane to be damaged, affecting the use of the user. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present disclosure is to provide a combination valve with backflow function capable of flushing the flow limiting channel to solve at least one of the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0006] The first aspect of the present disclosure provides a combination valve with backflow function, comprising: a valve body having a waste water inlet, a waste water outlet and a backflushing water port for connecting pure water;

[0007] Further comprising:

[0008] A first cavity and a second cavity are respectively arranged in the valve body, the first cavity is in communication with the waste water inlet, and the second cavity is in communication with the waste water outlet and the backflushing water port;

[0009] A flushing channel is arranged in the valve body and in communication with the second cavity and the first cavity;

[0010] A flow limiting channel is arranged in the valve body and in communication with the first cavity and the waste water outlet.

[0011] Further, the valve body further comprises a bottom wall and a side wall arranged at the edge of the bottom wall.

[0012] Further, a cover is arranged on the side wall.

[0013] The side wall edge is sealingly connected with the cover.

[0014] Further, a partition wall is arranged in the first cavity, and the second cavity is formed in the partition wall.

[0015] The flushing channel and the flow-limiting channel are respectively arranged in the partition wall.

[0016] Further, the flow-limiting channel comprises a communication pipe, one end of which is communicated with the wastewater outlet, and the other end is communicated with the first cavity through the wastewater outlet, the second cavity and the partition wall.

[0017] Further, the flushing channel is longitudinally arranged on the partition wall away from the bottom wall.

[0018] Further, a valve core is movably arranged between the cover and the partition wall.

[0019] The valve core comprises a first position and a second position, and is configured to block the flushing channel in the first position, and to make the first cavity and the second cavity communicated through the flow-limiting channel, and is configured to abut against the cover in the second position, and to make the first cavity and the second cavity communicated.

[0020] Further, the backflushing water inlet is coaxially provided with a plurality of pipe grooves with different diameters from inside to outside.

[0021] Further, the diameter of the pipe groove ranges from 15mm to 25mm.

[0022] The second aspect of the present disclosure provides a water purifier, comprising:

[0023] The combination valve according to any one of the first aspect.

[0024] The beneficial effects of the present disclosure are as follows:

[0025] The utility model discloses a backflushing water gap and second cavity communication, through the backflushing water gap access low ion pure water, pure water passes through second cavity and flows from waste water outlet, simultaneously, pure water still passes through second cavity and washes the channel, first cavity and then passes through the flow restriction channel and flows to waste water outlet, and the flow restriction channel that is easy to block is washed clean, avoids the flow restriction channel structure block washing channel, can also wash the whole valve body simultaneously, increases the life of valve body whole. Therefore the utility model discloses a first cavity and second cavity are set up in the valve body, and configure washing channel and flow restriction channel, and the combination valve can utilize larger washing channel to carry out reverse washing after making water. This design can effectively remove the scale and impurities adhered to the inner wall of flow restriction channel, avoid the flow restriction channel and block up because of scale in the high hardness water quality or the environment of poor water quality, thereby prolong the service life of combination valve, and ensure the smooth of waste water discharge.

[0026] Because the flow restriction channel is unobstructed, the pressure difference on both sides of the RO membrane is maintained stable, which helps to improve the filtering efficiency of the RO membrane and the quality of pure water output. At the same time, the risk of damage to the RO membrane due to the inability to discharge waste water is avoided, reducing the maintenance and replacement costs of the user.

[0027] By reducing the failure of the water purifier caused by the blockage of the combination valve, the user does not need to frequently clean or maintain manually, thereby improving the convenience of use. BRIEF DESCRIPTION OF DRAWINGS

[0028] The specific embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0029] Figure 1 A three-dimensional structure schematic view of the whole of the present disclosure is shown.

[0030] Figure 2 A three-dimensional structure schematic view of the valve body of the present disclosure is shown.

[0031] Figure 3 A top view of the valve body of the present disclosure is shown.

[0032] Figure 4 A sectional view of the valve body of the present disclosure is shown at A-A in Figure 3 .

[0033] Figure 5 A sectional view of the valve body of the present disclosure is shown at D-D in Figure 3 .

[0034] Figure 6 A sectional view of the valve body of the present disclosure is shown at E-E in Figure 3 .

[0035] Figure 7 A right view of the valve body of the present disclosure is shown. DETAILED DESCRIPTION

[0036] For a clearer explanation of the present disclosure, the present disclosure is further described below in conjunction with embodiments and drawings. Like components are denoted by the same reference numerals in the drawings. It should be understood by those skilled in the art that the specific description below is illustrative rather than limiting, and should not limit the scope of protection of the present disclosure.

[0037] As shown in Figure 1 , Figure 2 and Figure 3 , the first embodiment of the present disclosure provides a combined valve with backflow function, comprising:

[0038] a valve body 1, the valve body 1 having a wastewater inlet 11, a wastewater outlet 12, and a backwash water port 13 for connecting to purified water;

[0039] As shown in Figure 5 , a first cavity 14 and a second cavity 15 are respectively arranged in the valve body 1, the first cavity 14 is in communication with the wastewater inlet 11, as shown in Figure 6 , the second cavity 15 is in communication with the wastewater outlet 12 and the backwash water port 13;

[0040] a flushing channel 16 arranged in the valve body 1 and in communication with the second cavity 15 and the first cavity 14;

[0041] As shown in Figure 4 , a flow limiting channel 17 arranged in the valve body 1 and in communication with the first cavity 14 and the wastewater outlet 12.

[0042] In one possible implementation, the valve body 1 further comprises a bottom wall 18 and a side wall 19 arranged at the edge of the bottom wall 18.

[0043] In one possible implementation, the side wall 19 is provided with a cover 110;

[0044] The edge of the side wall 19 is sealingly connected with the cover 110.

[0045] In one possible implementation, the first cavity 14 is provided with a partition wall, and the second cavity 15 is formed in the partition wall;

[0046] The flushing channel 16 and the flow limiting channel 17 are respectively arranged in the partition wall.

[0047] In one possible implementation, the flow limiting channel 17 comprises a communication pipe, one end of the communication pipe is in communication with the wastewater outlet 12, and the other end is in communication with the first cavity 14 through the wastewater outlet 12, the second cavity 15, and the partition wall.

[0048] In one possible implementation, the flushing channel 16 is longitudinally arranged on the side of the partition wall away from the bottom wall 18.

[0049] In the utility model, the communicating pipe is the core component of the flow-limiting passage 17, and the design is simple and clear, one end is connected with the wastewater outlet 12, and the other end is connected with the first cavity 14 through a specific path. The design avoids complex internal structure and reduces processing difficulty.

[0050] On the other hand, the design that the communicating pipe passes through the partition wall enables the wastewater to flow smoothly from one cavity to another cavity without complex turning or shunting inside the cavity. This further simplifies the structure and improves processing efficiency.

[0051] In a possible implementation manner, a valve core 2 is movably arranged between the cover 110 and the partition wall;

[0052] The valve core 2 comprises a first position and a second position, and is configured to block the flushing passage 16 in the first position and enable the first cavity 14 and the second cavity 15 to communicate through the flow-limiting passage 17, and is configured to abut against the cover 110 in the second position and enable the first cavity 14 and the second cavity 15 to communicate.

[0053] The utility model cooperates the flushing passage 16 arranged longitudinally with the valve core 2, has higher integration, and enables the combined valve to occupy smaller space.

[0054] In a possible implementation manner, as shown in Figure 7 The backwashing water inlet 13 is coaxially provided with a plurality of pipe grooves 131 of different diameters from inside to outside.

[0055] In a possible implementation manner, the diameter of the pipe groove 131 ranges from 15 mm to 25 mm.

[0056] In the utility model, the design of the pipe grooves 131 of different diameters enables the utility model to be applicable to external connecting pipelines of various sizes.

[0057] The second embodiment of the utility model provides a water purifier, which comprises:

[0058] The combined valve of the first embodiment.

[0059] In the embodiment, the water purifier mainly comprises:

[0060] Water tank: store raw water without purification and store wastewater.

[0061] Filter Cartridge: The filter cartridge at least includes a PP cotton filter cartridge: usually as the first stage filter cartridge, used to intercept impurities in water, such as sand, rust and other small particles. Its pore size is generally 5 microns, which can effectively remove residual impurities in water. Activated carbon filter cartridge: including pre-particle activated carbon filter cartridge and compressed activated carbon filter cartridge (or called sintered activated carbon filter cartridge), the main function is to adsorb chemicals in water, such as bleaching powder, residual chlorine and the like, while removing the odor and color of water. RO membrane filter cartridge: this is the core filter cartridge of the water purifier, also known as reverse osmosis membrane filter cartridge. It uses the principle of semi-permeable membrane, by applying external pressure, water molecules pass through the membrane, while impurities, bacteria, viruses and other impurities in water are blocked on the other side of the membrane to form waste water. The filtration accuracy of RO membrane is very high, which can remove more than 99% of bacteria, heavy metals, chlorine, impurities and the like in water. And the post-activated carbon filter cartridge: used to improve the taste of purified water, usually made of coconut shell activated carbon, with sweet and sweet taste adjusting effect.

[0062] The waste water outlet of the RO membrane filter cartridge is connected to the waste water inlet 11 of the combination valve, and the waste water outlet 12 of the combination valve is connected to the waste water inlet 11 of the water tank. The pure water outlet is connected to the pure water outlet of the water purifier, and the raw water inlet is used to connect the raw water filtered by the polypropylene (PP) cotton filter cartridge and the activated carbon filter cartridge.

[0063] Water pump: usually a booster pump or a self-priming pump: used to pressurize the RO membrane for water supply, because the RO membrane needs additional pressure to complete the reverse osmosis process.

[0064] Combination valve: used for waste water discharge of the water purifier.

[0065] Water inlet valve: a water inlet switch that controls the opening and closing of the water path from the raw water tank to the filter cartridge.

[0066] High pressure switch: controls the start and stop of the water pump, when the pressure reaches a certain level, the high pressure switch will stop the water pump.

[0067] Working principle:

[0068] Turn on the water pump and the water inlet valve, the raw water flows from the raw water tank into the water purifier, first passes through the PP cotton filter cartridge for preliminary filtration to remove large particle impurities. The water filtered by the preliminary filter passes through the activated carbon filter cartridge to adsorb chemicals and odors in the water. The water treated by the activated carbon filter cartridge enters the RO membrane filter cartridge, under the action of external pressure, water molecules pass through the RO membrane filter cartridge, while impurities and bacteria are blocked outside the membrane to form waste water. The water treated by the RO membrane filter cartridge enters the post-activated carbon filter cartridge to further improve the taste, making the purified water more sweet and sweet.

[0069] More specifically, the working principle of the RO membrane filter cartridge for preparing pure water is as follows:

[0070] The valve core 2 is configured to the first position to block the flushing channel 16, at this time, the waste water of the RO membrane filter core flows into the waste water inlet 11 of the valve body 1, and due to the blocking of the flushing channel 16, can only flow out to the waste water outlet 12 through the flow limiting channel 17 with a smaller aperture on the combined valve; at this time, due to the smaller aperture of the flow limiting channel 17, a larger pressure difference is generated between the pure water side and the waste water side of the RO membrane filter core, and the water on the waste water side is filtered by the RO membrane filter core to become pure water; after the preparation of pure water is completed, the valve core 2 is configured to the second position to make the first cavity 14 and the second cavity 15 communicate through the flushing channel 16, at this time, the raw water in the RO membrane filter core is discharged to the combined valve through the waste water port, and sequentially flows through the first cavity 14, the flushing channel 16 and the second cavity 15, and is discharged from the waste water outlet 12 of the combined valve; after the raw water in the RO membrane filter core is discharged to the combined valve through the waste water port, it also sequentially flows through the first cavity 14, the flow limiting channel 17 and is discharged through the waste water outlet 12. In this way, the preliminary flushing of the combined valve is completed, after the preliminary flushing is completed, pure water is introduced into the backwashing water port 13, ion-poor pure water is connected to the backwashing water port 13, the pure water flows out from the waste water outlet 12 through the second cavity 15, at the same time, the pure water also flows out to the waste water outlet 12 through the flow limiting channel 17 after passing through the flushing channel 16 and the first cavity 14 through the second cavity 15, the easily clogged flow limiting channel 17 is flushed clean, avoiding that the flow limiting channel 17 structure blocks the flushing channel 16 and flushing the entire valve body 1, increasing the overall life of the valve body 1.

[0071] The utility model discloses a backwashing water port 13 communicates with the second cavity 15, by connecting ion-poor pure water to the backwashing water port 13, the pure water flows out from the waste water outlet 12 through the second cavity 15, at the same time, the pure water also flows out to the waste water outlet 12 through the flow limiting channel 17 after passing through the flushing channel 16 and the first cavity 14 through the second cavity 15, the easily clogged flow limiting channel 17 is flushed clean, avoiding that the flow limiting channel 17 structure blocks the flushing channel 16, and flushing the entire valve body 1 can also, increase the overall life of the valve body 1. Therefore the utility model discloses a first cavity 14 and second cavity 15 are set up in the valve body 1, and the flushing channel 16 and flow limiting channel 17 are configured, the combined valve can utilize larger flushing channel 16 to carry out reverse flushing after water preparation, this design can effectively remove the scale and impurities attached to the inner wall of flow limiting channel 17, avoid the flow limiting channel 17 from being blocked due to scale in the environment of high hardness water quality or poor water quality, thereby prolong the service life of the combined valve, and ensure the smoothness of waste water discharge.

[0072] Due to the unobstructed flow limiting channel 17, the pressure difference on both sides of the RO membrane can be maintained stable, which helps to improve the filtering efficiency of the RO membrane and the quality of pure water output. At the same time, the risk of damage to the RO membrane due to the inability to discharge waste water is avoided, reducing the maintenance and replacement costs of the user.

[0073] By reducing the failure of the water purifier caused by the combination valve blockage, the user does not need to frequently perform manual cleaning or maintenance, thereby improving the convenience of use.

[0074] In the description of the present disclosure, it should be noted that the positions or position relationships indicated by the terms "upper", "lower", etc. are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present disclosure. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0075] It should also be noted that in the description of the present disclosure, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0076] Obviously, the above embodiments of the present disclosure are only examples for clearly illustrating the present disclosure, and are not limitations on the embodiments of the present disclosure. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and it is impossible to enumerate all the embodiments here. Any obvious changes or variations derived from the technical solutions of the present disclosure are still within the protection scope of the present disclosure.

Claims

1. A combination valve with a reflux function, characterized in that, include: The valve body has a wastewater inlet, a wastewater outlet, and a backwash water inlet for connecting to pure water; Also includes A first cavity and a second cavity are respectively disposed in the valve body. The first cavity is connected to the wastewater inlet, and the second cavity is connected to the wastewater outlet and the backwash water outlet. A flushing channel is provided in the valve body and connects the second cavity and the first cavity; A flow-limiting channel is provided in the valve body and connects the first cavity and the wastewater outlet.

2. The combined valve according to claim 1, characterized in that, The valve body also includes a bottom wall and a side wall disposed at the edge of the bottom wall.

3. The combined valve according to claim 2, characterized in that, A cover is provided on the side wall; The edge of the sidewall is sealed to the cap.

4. The combined valve according to claim 3, characterized in that, The first cavity is provided with a partition wall, and the second cavity is formed within the partition wall; The flushing channel and the flow-limiting channel are respectively located on the partition wall.

5. The combined valve according to claim 4, characterized in that, The flow restriction channel includes a connecting pipe, one end of which is connected to the wastewater outlet, and the other end of which passes through the wastewater outlet, the second cavity, and through the partition wall to connect with the first cavity.

6. The combined valve according to claim 4, characterized in that, The flushing channel is longitudinally located on the side of the partition wall away from the bottom wall.

7. The combined valve according to claim 4, characterized in that, A valve core is movably disposed between the cover and the partition wall; The valve core includes a first position and a second position. The valve core is configured to block the flushing channel in the first position and connect the first cavity and the second cavity through a flow-limiting channel. It is also configured to abut against the cap in the second position and connect the first cavity and the second cavity.

8. The combined valve according to claim 1, characterized in that, The backwash inlet has multiple pipes of different diameters coaxially arranged from the inside to the outside.

9. The combined valve according to claim 8, characterized in that, The diameter of the tube is between 15mm and 25mm.

10. A water purifier, characterized in that, include: The combination valve as described in any one of claims 1-9.

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