Wastewater valve and water purifier

Abstract

The present invention discloses a wastewater valve and a water purifier. The wastewater valve includes a valve body, a valve core assembly, and a filter screen. The valve body has a water inlet flow channel and a water outlet flow channel. A wastewater chamber and a flushing chamber are provided inside the valve body. The valve core assembly is movably disposed inside the valve body to switch between a first position and a second position. When the valve core assembly is in the first position, the water inlet flow channel, the wastewater chamber, and the water outlet flow channel are connected and communicated. When the valve core assembly is in the second position, the water inlet flow channel, the flushing chamber, and the water outlet flow channel are connected and communicated. When the valve core assembly is in the first position, the filter screen is located in the wastewater chamber. Therefore, the filter screen can filter and intercept impurities or foreign matters in the water, thereby avoiding blockage of the wastewater valve. When the valve core assembly is in the second position, the filter screen is located in the flushing chamber, and the water in the flushing chamber can flush the filter screen. Therefore, scale formation and blockage of the filter screen can be avoided.

Description

Technical Field

[0001] The present invention relates to the field of water purifiers, and particularly to a waste water valve and a water purifier. Background Art

[0002] The waste water valve has two functions. One is to flush the reverse osmosis membrane, and the other is to discharge the waste water generated by the reverse osmosis membrane. For the existing waste water valves, the waste water holes are easily blocked by impurities or foreign matters in the waste water. After the waste water holes are blocked, the waste water cannot be discharged, which not only causes the waste water valve to lose its function, but in more serious cases, will lead to the scrapping of the reverse osmosis membrane of the water purifier.

[0003] In order to avoid the blockage of the waste water holes, the prior art with the application number 201721168416.X and the name of a normally closed pilot type combined solenoid valve discloses a solution of setting a filter mesh at the water inlet. However, since the filter mesh is set at the water inlet, after being used for a certain period of time, the filter mesh is prone to scale and blockage. Summary of the Invention

[0004] The main object of the present invention is to provide a waste water valve, aiming to intercept foreign matters in the waste water while avoiding the blockage of the filter mesh by foreign matters.

[0005] To achieve the above object, the waste water valve provided by the present invention includes: a valve body having an inlet water flow path and an outlet water flow path, and a waste water chamber and a flushing chamber are arranged in the valve body; a valve core assembly movably arranged in the valve body to switch between a first position and a second position. When the valve core assembly is in the first position, the inlet water flow path, the waste water chamber and the outlet water flow path are communicated; when the valve core assembly is in the second position, the inlet water flow path, the flushing chamber and the outlet water flow path are communicated; and a filter mesh having a cross section for intercepting foreign matters. When the valve core assembly is in the first position, the cross section is located in the waste water chamber to intercept foreign matters, and when the valve core assembly is in the second position, the cross section is located in the flushing chamber to flush the cross section.

[0006] Preferably, a capillary tube is communicated between the waste water chamber and the outlet water flow path. The filter mesh includes a filter mesh body, and the filter mesh body and the water inlet of the capillary tube are arranged in sequence in the water flow direction.

[0007] Preferably, one end of the capillary tube forms an inlet end, and the water inlet is opened on the inlet end; the filter mesh body is arranged at an interval from the outer peripheral surface of the inlet end; the side surface of the filter mesh body facing away from the inlet end forms the cross section.

[0008] Preferably, the cross section is arranged as a convex arc surface in the direction away from the capillary tube.

[0009] Preferably, a plurality of filtering holes are penetratingly provided on the filter net body, and the cross section of the filtering holes is polygonally arranged.

[0010] Preferably, the filter net further includes an upper filter net extending from the end of the filter net body to one side, and the upper filter net is located between the waste water chamber and the flushing chamber.

[0011] Preferably, an installation groove is provided on the valve body, and the filter net is detachably installed in the installation groove.

[0012] Preferably, an installation groove is provided on the valve body, and the filter net is detachably installed in the installation groove; insertion blocks are provided on the side edge of the filter net body, and insertion slots for the insertion blocks to be fitted and inserted are further provided on the valve body.

[0013] Preferably, positioning columns are provided on the side of the upper filter net away from the filter net body, and positioning grooves for the positioning columns to be fitted and fixed are further provided on the valve body.

[0014] The present invention also provides a water purifier, which includes a waste water valve, and the waste water valve includes:

[0015] A valve body having an inlet water flow channel and an outlet water flow channel, and a waste water chamber and a flushing chamber are provided inside the valve body; a valve core assembly movably arranged inside the valve body to switch between a first position and a second position. When the valve core assembly is in the first position, the inlet water flow channel, the waste water chamber and the outlet water flow channel are communicated; when the valve core assembly is in the second position, the inlet water flow channel, the flushing chamber and the outlet water flow channel are communicated; and a filter net having an intercepting surface for intercepting foreign matters. When the valve core assembly is in the first position, the intercepting surface is located in the waste water chamber to intercept foreign matters, and when the valve core assembly is in the second position, the intercepting surface is located in the flushing chamber to flush the intercepting surface.

[0016] The present invention provides a waste water valve. When the valve core assembly is in the first position, the inlet water flow channel, the waste water chamber and the outlet water flow channel are sequentially communicated, and the filter net is located in the waste water chamber. Therefore, the filter net can filter and intercept impurities or foreign matters in the water, thereby avoiding blockage of the waste water valve; when the valve core assembly is in the second position, the inlet water flow channel, the flushing chamber and the outlet water flow channel are sequentially communicated, and the filter net is located in the flushing chamber. The water in the flushing chamber can flush the filter net, so blockage of the filter net due to scaling can be avoided. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a top view structural schematic diagram of a waste water valve according to an embodiment of the present invention;

[0019] Figure 2 It is Figure 1 a cross-sectional structural schematic diagram along the II-II direction in

[0020] Figure 3 It is Figure 1 a cross-sectional structural schematic diagram along the III-III direction in

[0021] Figure 4 It is Figure 1 a structural schematic diagram of the filter screen in

[0022] Explanation of the reference numerals in the drawings:

[0023] Label Name Label Name 100 Valve body 210 Iron core 200 Valve core assembly 220 Sealing rubber 300 Filter screen 230 Water retaining tray 400 Capillary tube 310 Filter screen body 110 Inlet water flow channel 320 Upper filter screen 120 Outlet water flow channel 311 Insert block 130 Waste water chamber 321 Positioning post 140 Flushing chamber

[0024] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if the embodiments of the present invention involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The present invention provides a wastewater valve, which can intercept impurities and foreign matters in the wastewater and avoid the foreign matters from blocking the filter screen.

[0029] In an embodiment of the present invention, as Figures 1 to 3 shown, the wastewater valve includes a valve body 100, a valve core assembly 200, and a filter screen 300. Among them, the valve body 100 has a water inlet flow channel 110 and a water outlet flow channel 120. A wastewater chamber 130 and a flushing chamber 140 are provided inside the valve body 100. The valve core assembly 200 is movably arranged inside the valve body 100 to switch between a first position and a second position. As Figure 2 shown, when the valve core assembly 200 is in the first position, the water inlet flow channel 110, the wastewater chamber 130, and the water outlet flow channel 120 are connected and communicated. As Figure 3 shown, when the valve core assembly 200 is in the second position, the water inlet flow channel 110, the flushing chamber 140, and the water outlet flow channel 120 are connected and communicated; the filter screen 300 has a cross-section for intercepting foreign matters. When the valve core assembly 200 is in the first position, the cross-section is located in the wastewater chamber 130 to intercept foreign matters. When the valve core assembly 200 is in the second position, the cross-section is located in the flushing chamber 140 to flush the cross-section.

[0030] Specifically, the valve core assembly 200 includes an iron core 210, a sealing rubber 220, and a water blocking disc 230. A pressure boosting hole and a pressure relief hole are provided on the water blocking disc 230. The pressure boosting hole is connected and communicated with the water inlet flow channel 110, and water enters the interior of the wastewater valve from the pressure boosting hole. When the wastewater valve is in an unpowered state, the iron core 210 makes the sealing rubber 220 closely attached to the pressure relief hole under the action of a spring (as Figure 2 shown, the valve core assembly 200 is in the first position). The pressure in the water inlet flow channel 110 and the interior of the wastewater valve is greater than the pressure in the water outlet flow channel 120. Thus, the water inlet flow channel 110, the wastewater chamber 130, and the water outlet flow channel 120 are sequentially connected and communicated;

[0031] When the wastewater valve is in the energized state, the iron core 210 drives the sealing rubber 220 to move upward (as shown in Figure 3 ), the valve core assembly 200 is in the second position). Since the aperture of the pressure relief hole is larger than that of the pressure boost hole, the water flow rate of the outlet is greater than that of the inlet. Thus, the wastewater valve discharges water from the pressure relief hole for pressure relief. After the pressure relief is completed, the internal pressure of the wastewater valve is lower than the inlet pressure. Under the action of the inlet pressure, the water retaining disc 230 is lifted upward. Thus, the water inlet flow channel 110, the flushing chamber 140, and the water outlet flow channel 120 are communicated in sequence.

[0032] When the valve core assembly 200 of the wastewater valve proposed in this application is in the first position, the water inlet flow channel 110, the wastewater chamber 130, and the water outlet flow channel 120 are communicated in sequence. The filter net 300 is located in the wastewater chamber 130. Therefore, the filter net 300 can filter and intercept impurities or foreign matters in the water, thereby avoiding blockage of the wastewater valve. In addition, when the valve core assembly 200 is in the second position, the water inlet flow channel 110, the flushing chamber 140, and the water outlet flow channel 120 are communicated in sequence. The filter net 300 is located in the flushing chamber 140. The water in the flushing chamber 140 can flush the filter net 300. Therefore, scale formation and blockage of the filter net 300 can be avoided.

[0033] As a preferred method, the water inlet flow channel 110 and the water outlet flow channel 120 are arranged on the same side of the valve body 100. Thus, the structure of the wastewater valve is more compact.

[0034] Further, please refer to Figure 2 and Figure 4 . Now, the structure of the filter net 300 will be described. A capillary 400 is communicated between the wastewater chamber 130 and the water outlet flow channel 120. The filter net 300 includes a filter net body 310. The filter net body 310 and the water inlet of the capillary 400 are arranged in sequence in the water flow direction. Thus, after the water enters from the water inlet flow channel 110, it first passes through the filter net body 300, then enters the capillary 400, and finally is discharged through the water outlet flow channel 120. Since the filter net body 310 is arranged upstream of the water inlet of the capillary 400, impurities and foreign matters can be filtered, thereby preventing the capillary 400 from being blocked by impurities and foreign matters.

[0035] It should be noted here that in this embodiment, the capillary 400 can be replaced. Thus, when using capillaries 400 with different inner diameters, the inner hole sizes of the capillaries 400 are different. Therefore, the amount of wastewater can be adjusted by adjusting the size of the inner hole of the capillary 400. Thus, the stability of wastewater discharge is higher.

[0036] Further, please refer to Figure 1 、 Figure 2 and Figure 4, the setting position of the filter body 310 is now described. One end of the capillary 400 forms the water inlet end. The end surface of the water inlet end is formed to form the water inlet. The filter body 310 and the outer peripheral surface of the water inlet end are arranged at intervals; the side surface of the filter body 310 away from the water inlet end forms the interception surface. In this way, the filter body 310 is located inside the valve body 100. When the waste water chamber 130 is connected, the filter body 310 can filter the waste water entering the capillary 400 to prevent the capillary 400 from being blocked; when the flushing chamber 140 is connected, water will flow into the flushing chamber 140 first and quickly. This process has a significant flushing effect on foreign matter on the filter body 310, so it has the effect of preventing the filter body 310 from being blocked and scaling.

[0037] It should be noted here that the solution of the present application is completely different from the solution of setting the filter 300 at the water inlet. For the solution of setting the filter 300 at the water inlet, the filter 300 only has the function of intercepting foreign matter; while in the present application, the filter 300 is set in the valve body 100, specifically, the filter 300 is set between the wastewater chamber 130 and the flushing chamber 140, so that the filter 300 not only has the effect of intercepting foreign matter, but also has the effect of being flushable to prevent scaling and clogging.

[0038] Furthermore, in order to promote the separation of impurities and foreign bodies from the filter 300, in one embodiment of the present application, the interception surface is arranged in a direction away from the capillary 400 and is in the form of an outwardly convex arc surface (not shown). In this way, when the flushing cavity 140 is connected with the water inlet channel 110 and the water outlet channel 120, water is flushed on the interception surface, and the contact area between the impurities and the outwardly convex arc surface is small, and the adhesion is small, so the impurities and foreign bodies can be flushed away.

[0039] For further information, please refer to Figure 4 In order to improve the effect of preventing the filter 300 from scaling and clogging, in one embodiment of the present application, a plurality of filter holes are provided through the filter body 310, and the cross section of the filter hole is set in a polygonal shape. In this way, the cross section of the filter hole has edges and corners, and it is difficult for impurities and foreign matter to fill the filter hole. In other words, there is a gap between the impurities and foreign matter and the edges and corners of the filter hole. In this way, when the flushing cavity 140 is connected with the water inlet flow channel 110 and the water outlet flow channel 120, the impurities and foreign matter are more easily washed away, thereby improving the effect of preventing the filter 300 from scaling and clogging.

[0040] As a preferred embodiment, in this embodiment, the cross section of the filter hole is rectangular, preferably square. However, the design of the present application is not limited thereto, and in other embodiments, the cross section of the filter hole can also be pentagonal, hexagonal, octagonal, etc.

[0041] For further information, please refer to Figures 2 to 4, in order to increase the filtration area of the filter screen 300, in an embodiment of the present application, the filter screen 300 further includes an upper filter screen 320 extending from the end of the filter screen body 310 to one side, and the upper filter screen 320 is located between the wastewater chamber 130 and the flushing chamber 140. Thus, when the valve core assembly 200 is in the first position, the water inlet channel 110, the wastewater chamber 130, and the water outlet channel 120 are connected and communicated. Since the filter screen 300 includes two parts, namely the filter screen body 310 and the upper filter screen 320, the filtration area is larger. In this way, impurities and foreign matters in the water filtered by the filter screen 300 are filtered more thoroughly, so the clogging rate of the capillary 400 can be reduced; in addition, since the filtration area of the filter screen 300 is larger, fewer impurities and foreign matters are intercepted on the filter screen 300 per unit area, so the filter screen 300 is easier to be washed clean.

[0042] It should be noted here that since the upper filter screen 320 is located between the wastewater chamber 130 and the flushing chamber 140, it has a certain degree of partition effect on the wastewater chamber 130 and the flushing chamber 140. Therefore, when the valve core assembly 200 is in the second position, the water inlet channel 110, the flushing chamber 140, and the water outlet channel 120 are connected and communicated, which can promote most of the water to flow into the flushing chamber 140; in this way, the amount of water for flushing the cross-section of the filter screen 300 is large, and the cleaning effect of the filter screen 300 is good.

[0043] Furthermore, please refer to Figure 1 and Figure 4 , now the installation structure of the filter screen 300 will be described. In this embodiment, an installation groove (not shown in the figure) is provided on the valve body 100, and the filter screen 300 is detachably installed in the installation groove. In this way, the installation and disassembly of the filter screen 300 can be conveniently carried out.

[0044] Specifically, in this embodiment, insertion blocks 311 are provided on the side edges of the filter screen body 310, and slots (not shown in the figure) for the insertion blocks 311 to be adaptively inserted are also provided on the valve body 100. When the filter screen 300 is installed in place with the installation groove, the insertion blocks 311 are adaptively inserted into the slots, so as to ensure the stable connection between the filter screen 300 and the valve body 100.

[0045] As a preferred method, positioning columns 321 are provided on the side of the upper filter screen 320 away from the filter screen body 310, and positioning grooves for the positioning columns 321 to be adaptively fixed are also provided on the valve body 100. In this way, the stable fixation of the filter screen 300 can be further maintained.

[0046] The present invention also provides a water purifier (not shown in the figure), which includes the waste water valve. For the specific structure of the waste water valve, please refer to the above embodiments. Since the water purifier provided by the present application adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one.

[0047] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A wastewater valve, characterized in that, include: The valve body has a water inlet channel and a water outlet channel, and a wastewater chamber and a flushing chamber are arranged in the valve body; A valve core assembly comprises a water retaining plate, a pressure-boosting hole and a pressure-relief hole are provided on the water retaining plate, the pressure-boosting hole is communicated with a water inlet channel, the valve core assembly is used for draining water and relieving pressure through the pressure-relief hole, and the aperture of the pressure-relief hole is larger than the aperture of the pressure-boosting hole; the valve core assembly is movably arranged in the valve body to switch between a first position and a second position, when the valve core assembly is in the first position, the water inlet channel, the waste water chamber and the water outlet channel are communicated, when the valve core assembly is in the second position, the water inlet channel, the flushing chamber and the water outlet channel are communicated; and, A filter screen is arranged in the valve body, and the filter screen includes a filter screen body and an upper filter screen extending to one side from the end of the filter screen body, and a plurality of filter holes are penetrated on the filter screen body, and the cross-section of the filter holes has edges and corners; the upper filter screen is located between the wastewater chamber and the flushing chamber, and a positioning column is provided on the side of the upper filter screen away from the filter screen body, and a positioning groove for the positioning column to be adapted and fixed is provided on the valve body; the filter screen has an interception surface for intercepting foreign matter, and when the valve core assembly is in the first position, the interception surface is used to intercept foreign matter in the water flowing from the water inlet channel into the water outlet channel, and when the valve core assembly is in the second position, the interception surface is suitable for being flushed by water flowing from the water inlet channel into the flushing chamber to flush foreign matter.

2. The wastewater valve according to claim 1, characterized in that, A capillary tube is connected between the waste water cavity and the water outlet channel, and the filter body and the water inlet of the capillary tube are arranged in sequence in the water flow direction.

3. The wastewater valve according to claim 2, characterized in that, One end of the capillary tube forms a water inlet end, the water inlet end is provided with the water inlet port, the filter body is spaced apart from the outer peripheral surface of the water inlet end; the side surface of the filter body facing away from the water inlet end forms the interception surface.

4. The wastewater valve according to claim 2, characterized in that, The intercepting surface is arranged in a direction away from the capillary tube and is in the form of an outwardly convex arc-shaped surface.

5. The wastewater valve according to claim 2, wherein The cross section of the filtering hole is arranged in a polygonal shape.

6. The wastewater valve according to any one of claims 1 to 5, characterized in that, The valve body is provided with a mounting groove, and the filter screen is detachably mounted in the mounting groove.

7. The wastewater valve according to claim 1, characterized in that, An insert block is arranged on the side of the filter body, and a slot for the insert block to be adapted and inserted is also arranged on the valve body.

8. A water purifier, characterized in that, The water purifier comprises a wastewater valve as described in any one of claims 1 to 7.

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