CN220891193U - Valve for filter element, filter element and water purifying device - Google Patents

Abstract

The utility model relates to the technical field of water purifying devices, in particular to a valve for a filter element, the filter element and the water purifying device, and aims to solve the problem that the water outlet aperture of a waste water valve is too small. To this end, a valve for a filter cartridge of the present utility model comprises: the valve body is internally provided with a valve cavity, the outer wall of the valve body is provided with a liquid inlet and a liquid outlet, the valve cavity is communicated with the liquid inlet and the liquid outlet, and the opening area of the valve cavity is contracted from the liquid inlet to the liquid outlet; and a ball disposed within the valve chamber. The filter element comprises a filter element main body, and the valve is arranged on the filter element main body. The utility model relates to a water purifying device, which comprises the filter element. The valve of the utility model can replace a waste water valve or a waste water proportional control valve in the prior art. The valve does not need to adjust the flow through the small-diameter water outlet, so that the liquid outlet of the valve can be set to be the same as or similar to the diameter of the waste water pipe, and noise caused by diameter change is avoided.

Description

Valve for filter element, filter element and water purifying device

Technical Field

The utility model relates to the technical field of water purifying devices, and particularly provides a valve for a filter element, the filter element and the water purifying device.

Background

The water purifier is usually filtered by an RO reverse osmosis filter element. The filter element is an efficient filtering device and can effectively remove impurities and pollutants in water. The front end of the filter element is provided with a waste water port for discharging waste water generated in the filtering treatment process. When filtering, the pressure of the inlet water at the front end of the RO membrane is required to be kept, and a waste water proportion regulating valve is usually additionally arranged on a waste water port. The waste water proportion regulating valve discharges waste water through a water outlet hole with a small aperture so as to regulate the water outlet flow. However, when wastewater enters a pipeline with a larger aperture through the water outlet, larger noise is generated due to the change of the aperture, and a certain influence is brought to the use experience of a user.

In addition, after the water purifier works for a long time, salt and impurities in the wastewater can be accumulated in the wastewater proportional control valve. The salt and impurities can be gathered around the water outlet hole with small aperture, which easily causes the water outlet hole to be blocked by the impurities, so that the wastewater can not be discharged smoothly. This condition may affect the normal operation of the water purifier and may even shorten the service life of the water purifier.

Although the prior art has the waste water proportion regulating valve with the flushing function, impurities in the water outlet hole can be removed. However, the cost of the waste water valve is high, and structures such as waterways and the like are needed to be added in the water purifier, so that the structure of the water purifier is more complex.

Accordingly, there is a need in the art for a valve for a filter cartridge, a filter cartridge and a water purification device to solve the above problems.

Disclosure of utility model

The utility model aims to solve the technical problem that the water outlet aperture of the waste water valve is too small.

In a first aspect, the present utility model provides a valve for a filter cartridge, the valve comprising:

The valve body is internally provided with a valve cavity, and is provided with a liquid inlet and a liquid outlet which are communicated with the valve cavity;

A valve core movably arranged in the valve cavity;

When the pressure of the liquid flowing into the valve cavity from the liquid inlet reaches a preset value, the liquid can drive the valve core to incompletely block the liquid outlet side of the valve cavity;

When the pressure of the liquid flowing into the valve cavity from the liquid inlet does not reach a preset value, the valve core and the valve cavity do not block the liquid outlet side of the valve cavity.

In the specific embodiment of the valve, a protruding limiting part is arranged at the liquid inlet, and the limiting part can prevent the valve core from being separated from the valve cavity.

In a specific embodiment of the valve, the valve core is a sphere, or a cone.

In the specific embodiment of the valve, the opening area of the valve cavity is contracted from the liquid inlet to the liquid outlet.

In a second aspect, the utility model provides a filter cartridge comprising a cartridge body, the cartridge body having the valve described above disposed thereon.

In the specific embodiment of the filter element, the filter element main body is provided with a waste water port, the valve is arranged at the waste water port, the liquid inlet is communicated with the inside of the filter element main body, and waste water in the filter element can be discharged outwards through the waste water port and the valve.

In the specific embodiment of the filter element, the waste water port is arranged at the upper part of the filter element main body, and the liquid flow direction in the valve cavity is vertically arranged.

In a specific embodiment of the above filter element, the filter element is a reverse osmosis filter element.

In a third aspect, the present utility model provides a water purification device comprising the filter element described above.

In the specific embodiment of the water purifying device, the water purifying device further comprises a booster pump, the water outlet of the booster pump is communicated with the water inlet of the filter element, and the booster pump can drive the water inlet pressure of the valve to reach the preset value.

In the specific embodiment of the water purifying device, the water purifying device further comprises a waste water pipe, and the waste water pipe is communicated with the waste water port of the filter element.

In the specific embodiment of the water purifying device, the water purifying device further comprises a water purifying pipe, and the water purifying pipe is communicated with the water purifying port of the filter element.

Under the condition of adopting the technical scheme, the valve comprises a valve body and a valve core, and the valve core is movably arranged in the valve cavity. When the pressure of the liquid entering the valve cavity does not reach a preset value, the valve core is separated from the inner wall of the valve cavity, so that the liquid can pass through the valve. When the pressure of the liquid entering the valve cavity reaches a preset value, the liquid can drive the valve core to incompletely block the liquid outlet side of the valve cavity, so that the ball at least partially blocks the valve cavity, and the liquid is limited to pass through the valve cavity. The valve can replace a waste water valve or a waste water proportional control valve in the prior art. The valve does not need to adjust the flow through the small-diameter water outlet, so that the liquid outlet of the valve can be set to be the same as or similar to the diameter of the waste water pipe, and noise caused by diameter change is avoided. The valve can prevent a small amount of impurities from accumulating in the valve by enlarging the sizes of the liquid inlet, the valve cavity and the liquid outlet and the gap between the valve core and the valve cavity, so that the discharge of waste water can be influenced, and the service life of the valve is longer. Moreover, because the structure of this valve is simple, the impurity of clearance inside of being convenient for can prolong working life through simple washing back.

Further, the valve is arranged at the top waste water port of the filter element, and the liquid flow direction in the valve cavity is vertically arranged. The valve core is positioned at the bottom of the valve cavity under the driving of gravity. Thus, the valve core can be prevented from automatically blocking the liquid outlet.

Further, the filter element provided with the valve is arranged in the water purifying device. The booster pump can improve the liquid pressure that gets into the filter core, and high pressure liquid drives the case butt on the valve pocket inner wall to stop the liquid outlet, thereby make the inside closed state that is in of casing of reverse osmosis filter core, guarantee that the liquid in the casing has sufficient pressure, can pass through reverse osmosis membrane, accomplish the filtration. When the booster pump is closed, liquid enters the reverse osmosis filter element in a low-pressure state, and the pressure of the liquid is insufficient to pass through the reverse osmosis membrane, so that the liquid level in the shell can be gradually raised. When low-pressure liquid enters the valve at the top of the shell, the pressure of the liquid cannot drive the valve core to be abutted against the inner wall of the valve cavity, the valve core cannot block the liquid outlet, the liquid can smoothly enter the valve cavity and enter the waste water pipe through the liquid outlet, and therefore waste water in the filter core is discharged.

Drawings

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a water circuit of a water purifying device according to the present utility model;

FIG. 2 is a schematic view of the internal structure of the reverse osmosis valve core provided by the utility model;

FIG. 3 is a schematic view of a valve in a first working state according to the present utility model, wherein a ball abuts against an inner wall of a valve cavity;

Fig. 4 is a schematic structural view of the valve in the second working state according to the present utility model, wherein the ball is not abutted against the inner wall of the valve cavity.

List of reference numerals:

1. A valve body; 11. a valve cavity; 12. a liquid inlet; 13. a liquid outlet; 2. a valve core; 3. a limit part; 31. a through hole;

4. A cartridge body; 41. a waste water port; 42. a water purifying port; 43. a water inlet; 44. a housing; 45. a central tube; 46. a reverse osmosis membrane;

5. a booster pump; 6. a waste pipe; 7. a water purifying pipe; 8. a water inlet pipe; 9. a filter element is arranged in front; 10. and a control valve.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

In order to solve the problem that the water outlet aperture of the waste water valve is too small, the embodiment discloses a water purifying device which is mainly used for purifying drinking water and can also purify other domestic water.

Referring to fig. 1, the water purifying apparatus includes a water inlet pipe 8, a booster pump 5, a filter cartridge body 4, a water purifying pipe 7, and a waste pipe 6.

The water inlet pipe 8 is used for providing raw water to be purified. One end of the water inlet pipe 8 is connected with a water source, and the other end is connected with an inlet of the booster pump 5. Further, be provided with leading filter core 9 and control valve 10 on the inlet tube 8, leading filter core 9 is used for carrying out preliminary filtration to the raw water, and control valve 10 sets up between leading filter core 9 and booster pump 5, can adjust the flow of water route between leading filter core 9 and the booster pump 5 through the aperture size of adjusting control valve 10.

The booster pump 5 serves to increase the pressure of raw water so that the raw water can pass through the reverse osmosis membrane 46 of the cartridge body 4. Specifically, the outlet of the booster pump 5 communicates with the water inlet 43 of the cartridge body 4.

The filter element main body 4 is specifically a reverse osmosis filter element, a reverse osmosis membrane 46 is arranged in the reverse osmosis filter element, a water purifying port 42 of the reverse osmosis filter element is communicated with the water purifying pipe 7, and a waste water port 41 of the reverse osmosis filter element is communicated with the waste water pipe 6. The high-pressure raw water provided by the booster pump 5 enters the reverse osmosis filter element through the water inlet 43, is filtered by the reverse osmosis membrane 46, and the purified water passing through the reverse osmosis membrane 46 is discharged through the purified water pipe 7, and the wastewater which cannot pass through the reverse osmosis membrane 46 is discharged through the wastewater pipe 6.

Specifically, referring to fig. 2, the reverse osmosis cartridge includes a housing 44, a center tube 45, and a reverse osmosis membrane 46. The center tube 45 is vertically disposed within the housing 44, and the reverse osmosis membrane 46 is wound around the center tube 45. The water inlet 43 and the clean water outlet 42 are both arranged at the bottom of the shell 44, and the central tube 45 is communicated with the clean water outlet 42. The waste gate 41 is disposed at the top of the housing 44. The high-pressure raw water enters the shell 44 through the water inlet 43, the purified water filtered by the reverse osmosis membrane 46 is discharged into the water purifying pipe 7 through the central pipe 45 and the water purifying port 42, and the wastewater and impurities in the water which cannot pass through the reverse osmosis membrane 46 remain in the shell 44. When the level of the wastewater reaches the wastewater port 41 at the top of the housing 44, the wastewater is discharged into the wastewater pipe 6 through the wastewater port 41.

In order to prevent the high-pressure raw water from being directly discharged from the waste water port 41, resulting in insufficient water pressure in the housing 44 to pass through the reverse osmosis membrane 46, a valve is provided at the waste water port 41 to restrict the water in the housing 44 from passing through the waste water port 41.

Referring to fig. 3 and 4, the valve includes a valve body 1 and a valve body 2.

The valve body 1 can be integrally formed with the housing 44 of the reverse osmosis filter element, or can be connected to the housing 44 in a fixed or detachable manner. The valve body 1 is internally provided with a valve cavity 11, and the outer wall of the valve body 1 is provided with a liquid inlet 12 and a liquid outlet 13. The liquid inlet 12 and the liquid outlet 13 are communicated with the valve cavity 11. External liquid can enter the valve cavity 11 through the liquid inlet 12, and liquid in the valve cavity 11 can be discharged through the liquid outlet 13.

The shape of the valve chamber 11 has the following features: the opening area of the valve cavity 11 is contracted from the liquid inlet 12 to the liquid outlet 13. Specifically, the inner wall of the valve cavity 11 is an inner conical surface, the small-caliber end of the conical surface is communicated with the liquid outlet 13, and the large-caliber end of the conical surface is communicated with the liquid inlet 12.

The valve core 2 is a sphere or a cone. In this embodiment, the valve core 2 is a steel ball, and in other embodiments, the ball 2 may be made of other materials such as plastic, ceramic, glass, etc. The spool 2 is disposed in the valve chamber 11. Specifically, the diameter of the valve core 2 is larger than the diameter of the small-caliber end of the conical surface, so that the valve core 2 can block the small-caliber end; the diameter of the valve core 2 is smaller than the diameter of the large-caliber end of the conical surface, so that enough space is provided in the valve cavity 11, and liquid can be discharged through the liquid outlet valve after entering the valve cavity 11.

Referring to fig. 3, if the valve core 2 is abutted against the inner wall of the valve cavity 11 by an external force, the valve cavity 11 is blocked, so that the liquid is restricted from flowing from the liquid inlet 12 to the liquid outlet 13. Referring to fig. 4, if the valve spool 2 is not abutted against the inner wall of the valve chamber 11, the liquid can flow from the liquid inlet 12 to the liquid outlet 13 through the valve chamber 11, and be discharged through the liquid outlet 13.

The factor that affects whether the spool 2 abuts against the inner wall of the valve chamber 11 is the pressure of the liquid that enters the valve chamber 11. When the liquid entering the valve cavity 11 does not reach a preset value, the valve core 2 is not abutted with the inner wall of the valve cavity 11; when the liquid entering the valve chamber 11 reaches a preset value, the valve core 2 will abut against the inner wall of the valve chamber 11. Because the shape of the inner wall of the valve cavity 11 is a conical surface, the liquid pressure drives the valve core 2 to abut against one small caliber end of the inner wall of the valve cavity 11, so that the valve core 2 blocks the liquid outlet 13, and the liquid outflow is limited.

In addition, a protruding limiting part 3 is arranged at the liquid inlet 12, and the limiting part 3 can prevent the valve core 2 from being separated from the valve cavity 11. Specifically, the limiting portion 3 is an annular flange protruding inwards from the inner wall of the liquid inlet 12, and the diameter of the through hole 31 in the middle of the annular flange is smaller than that of the valve core 2, so that the valve core 2 can be prevented from falling out of the liquid inlet 12 from the through hole 31. And the external liquid can flow into the liquid inlet 12 through the through hole 31.

It should be noted that, although the limiting portion 3 is an annular flange in the present embodiment, the arrangement is not limited to the present utility model, and other arrangements may be adopted by those skilled in the art in other embodiments without departing from the principles of the present utility model, for example: the limiting part 3 is a plurality of protruding blocks which can block the valve core 2 and can not influence the inflow of liquid into the liquid inlet 12. Such modifications do not depart from the basic principles of the utility model and are therefore intended to be within the scope of the utility model.

The valve is provided at the waste water port 41, and the liquid inlet 12 communicates with the inside of the cartridge body 4, in other words, the liquid inlet 12 communicates with the inside of the housing 44. The liquid outlet 13 communicates with the outside of the cartridge body 4, in other words, the liquid outlet 13 is provided toward the outer end of the waste water port 41 or the waste water pipe 6. Further, the flow direction of the liquid in the valve cavity 11 is vertically arranged, in other words, the flow channel formed by the liquid inlet 12, the valve cavity 11 and the liquid outlet 13 is vertically arranged. Specifically, the liquid inlet 12 is directed downward, the liquid outlet 13 is directed upward, and the valve chamber 11 is located between the liquid inlet 12 and the liquid outlet 13. This arrangement allows the valve spool 2 to be driven by gravity to be positioned at the bottom of the valve chamber 11, in other words, the valve spool 2 is positioned at the large-caliber end of the valve chamber 11. This prevents the valve element 2 from blocking the liquid outlet 13 by itself.

Referring to fig. 3, when the booster pump 5 increases the pressure of the liquid and drives the high pressure liquid into the reverse osmosis cartridge, the high pressure liquid in the reverse osmosis cartridge also enters the valve at the waste water port 41 at the top of the reverse osmosis cartridge as the liquid increases and the liquid level increases. The high-pressure liquid drives the valve core 2 to be abutted against the inner wall of the valve cavity 11 so as to block the liquid outlet 13, so that the inside of the shell 44 of the reverse osmosis filter element is in a closed state, the liquid in the shell 44 is ensured to have enough pressure, and the filtration can be completed through the reverse osmosis membrane 46.

And, the high pressure liquid can drive the valve core 2 to rotate, which can drive part of the liquid to pass through the valve and enter the waste pipe 6. However, since the amount of liquid that can be turned by the valve element 2 into the waste 6 is small, the filtering of the liquid in the housing 44 is not affected.

Referring to fig. 4, if the booster pump 5 is not activated and liquid enters the reverse osmosis cartridge in a low pressure state, the pressure of the liquid is insufficient to pass through the reverse osmosis membrane 46, and the liquid level in the housing 44 is gradually raised. When low-pressure liquid enters the valve at the top of the housing 44, the pressure of the liquid cannot drive the valve core 2 to abut against the inner wall of the valve cavity 11, in other words, the valve core 2 cannot block the liquid outlet 13, and the liquid can smoothly enter the valve cavity 11 and enter the waste water pipe 6 through the liquid outlet 13.

Therefore, the water purifying device has the following two working states:

Referring to fig. 3, the first operating condition is for providing filtered clean water. In this operating state, the control valve 10 is first opened to allow raw water to pass through the water inlet pipe 8. Then the booster pump 5 is started to increase the water pressure of the raw water to a level that the raw water can pass through the reverse osmosis membrane 46 and the valve core 2 of the valve can be driven to abut against the inner wall of the valve cavity 11. The high pressure raw water then enters the housing 44 of the reverse osmosis cartridge. Along with the increase of the high-pressure raw water entering the shell 44, the liquid level rises, the high-pressure raw water can enter the valve at the top of the shell 44 and drive the valve core 2 of the valve to abut against the inner wall of the valve cavity 11, so that the pressure of the water body in the shell 44 can be ensured to pass through the reverse osmosis membrane 46. The purified water filtered by the reverse osmosis membrane 46 is discharged through the central tube 45, the purified water port 42 and the purified water pipe 7, thereby outputting purified water.

Referring to fig. 4, the second operating condition is for draining the wastewater from the reverse osmosis cartridge. In this operating state, the control valve 10 is first opened to allow raw water to pass through the water inlet pipe 8. However, in this working state, the booster pump 5 is not turned on, so that raw water enters the reverse osmosis filter element in a low-pressure state. The low pressure raw water then enters the housing 44 of the reverse osmosis cartridge. As the low pressure raw water entering the housing 44 increases, the liquid level rises and the low pressure raw water enters the valve at the top of the housing 44. Because the low-pressure raw water does not drive the valve core 2 to be abutted against the inner wall of the valve cavity 11, the low-pressure raw water can directly pass through the valve and enter the waste water pipe 6. Since the low pressure raw water is introduced through the bottom of the reverse osmosis cartridge housing 44, the low pressure raw water drives the impurities deposited at the bottom of the housing 44 to be discharged through the valve and the wastewater pipe 6. By inputting a certain amount of low-pressure raw water into the reverse osmosis filter element, impurities and wastewater in the reverse osmosis filter element can be completely discharged through the wastewater pipe 6.

In summary, the water purifying device of the present embodiment can switch the two working states according to the on or off state of the booster pump 5. Thus, the booster pump 5 should be able to force the liquid pressure entering the reverse osmosis cartridge to both pass through the reverse osmosis membrane 46 and force the cartridge 2 against the inner wall of the valve chamber 11.

The valve provided by the embodiment can replace a waste water valve or a waste water proportion regulating valve in the prior art. The valve does not need to regulate the flow through the small-diameter water outlet, so that the liquid outlet 13 of the valve can be set to be the same as or similar to the diameter of the waste pipe 6, thereby avoiding noise caused by diameter change. The valve can prevent a small amount of impurities from accumulating in the valve by designing the sizes of the liquid inlet 12, the valve cavity 11 and the liquid outlet 13 and the size of the gap between the valve core 2 and the valve cavity 11, so that the discharge of waste water can be influenced, and the service life of the valve is longer. Moreover, because the structure of this valve is simple, the impurity of clearance inside of being convenient for can prolong working life through simple washing back. The waste water valve or the waste water proportional control valve in the prior art is complex in structure, the difficulty in cleaning is high, and the effect is difficult to achieve.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (12)

1. A valve for a filter cartridge, comprising:

The valve comprises a valve body (1), wherein a valve cavity (11) is formed in the valve body, and the valve body (1) is provided with a liquid inlet (12) and a liquid outlet (13) which are communicated with the valve cavity (11);

a valve element (2) movably arranged in the valve chamber (11);

When the pressure of the liquid flowing into the valve cavity (11) from the liquid inlet (12) reaches a preset value, the liquid can drive the valve core (2) to incompletely block the liquid outlet side of the valve cavity (11);

When the pressure of the liquid flowing into the valve cavity (11) from the liquid inlet (12) does not reach a preset value, the valve core (2) and the valve cavity (11) do not block the liquid outlet side of the valve cavity (11).

2. Valve according to claim 1, characterized in that the liquid inlet (12) is provided with a protruding stop (3), which stop (3) can block the valve cartridge (2) from exiting the valve chamber (11).

3. Valve according to claim 1, characterized in that the valve element (2) is a sphere, or a cone.

4. Valve according to claim 1, characterized in that the valve chamber (11) has an opening area which is arranged so as to be convergent from the inlet opening (12) to the outlet opening (13).

5. A filter cartridge comprising a filter cartridge body (4), said filter cartridge body (4) having a valve according to any one of claims 1-4 disposed thereon.

6. A filter cartridge according to claim 5, wherein the cartridge body (4) is provided with a waste water port (41), the valve is arranged at the waste water port (41), the liquid inlet (12) communicates with the interior of the cartridge body (4), and waste water in the cartridge can be discharged outwards through the waste water port (41) and the valve.

7. A cartridge as claimed in claim 6, wherein the waste water port (41) is provided in an upper portion of the cartridge body (4), and the flow direction of the liquid in the valve chamber (11) is vertically arranged.

8. The filter cartridge of claim 5, wherein the filter cartridge is a reverse osmosis filter cartridge.

9. A water purification apparatus comprising a filter cartridge according to any one of claims 5 to 8.

10. The water purification device according to claim 9, further comprising a booster pump (5), wherein a water outlet of the booster pump (5) is connected to a water inlet (43) of the filter element, and wherein the booster pump (5) is capable of driving a water inlet pressure of the valve to reach the preset value.

11. The water purification device according to claim 9, further comprising a waste pipe (6), the waste pipe (6) being in communication with a waste water port (41) of the filter cartridge.

12. The water purification device according to claim 9, further comprising a water purification tube (7), the water purification tube (7) being in communication with a water purification port (42) of the filter cartridge.