阅读说明：本技术 一种废水比装置 (Waste water ratio device ) 是由 王鑫 于 2019-10-22 设计创作，主要内容包括：一种废水比装置,其特征在于：该废水比装置包括有阀套,所述阀套开设有原水口、浓水口、产水口和排水口；阀芯,可轴向滑移的设置于所述阀套内,原水口、浓水口和产水口相互隔离而互不连通,排水口分别与所述原水口、产水口相隔离,阀芯可控制排水口的开口大小；弹性组件；阀芯两侧所承受的压力始终满足如下动态平衡关系：Fy+Fn＝Fc+Ft。本发明的优点在于：采用纯水压控制实现废水比大小的自动调节,控制更为稳定可靠,阀芯前后移动过程中即能实现对废水比的清洗,整体结构简单易实施；根据原水水路变化及时调节过滤装置的膜前压力,进而防止原水水压不稳造成对过滤膜的损伤。(A waste water ratio device is characterized in that: the waste water ratio device comprises a valve sleeve, wherein the valve sleeve is provided with an original water gap, a concentrated water gap, a water production gap and a water outlet; the valve core is arranged in the valve sleeve in an axial sliding manner, the original water gap, the concentrated water gap and the water production gap are isolated from each other and are not communicated with each other, the water outlet is isolated from the original water gap and the water production gap respectively, and the valve core can control the opening size of the water outlet; an elastic component; the pressure born by the two sides of the valve core always meets the following dynamic balance relation: fy + Fn equals Fc + Ft. The invention has the advantages that: the pure water pressure is adopted for controlling to realize the automatic adjustment of the wastewater ratio, the control is more stable and reliable, the cleaning of the wastewater ratio can be realized in the process of forward and backward movement of the valve core, and the whole structure is simple and easy to implement; the membrane front pressure of the filtering device is timely adjusted according to the change of the raw water channel, and further damage to the filtering membrane caused by unstable raw water pressure is prevented.)

1. A waste water ratio device is characterized in that: the waste water ratio device comprises

The water purifying valve comprises a valve sleeve (1), wherein the valve sleeve (1) is provided with a raw water port (11), a concentrated water port (12), a water producing port (13) and a water discharging port (14), wherein the raw water port (11) is communicated with a raw water waterway at the front end of water purifying equipment, the concentrated water port (12) is communicated with the water discharging end of a booster pump (8) of the water purifying equipment, and the water producing port (13) is communicated with the water producing end of the water purifying equipment;

the valve core (2) is arranged in the valve sleeve (1) in an axially sliding manner, the valve core (2) isolates the raw water port (11), the concentrated water port (12) and the water production port (13) from each other and is not communicated with each other, the water discharge port (14) is respectively isolated from the raw water port (11) and the water production port (13), the water discharge port (14) and the concentrated water port (12) are always communicated, and the valve core (2) can control the opening size of the water discharge port (14);

the elastic component is arranged in the valve sleeve (1), the fixed end of the elastic component is connected with the valve sleeve (1), and the elastic movable end of the elastic component is connected with the valve core (2);

one side of the valve core (2) bears the sum of the water pressure Fy of the raw water port (11) and the water pressure Fn of the concentrated water port (12), the other side of the valve core (2) bears the sum of the water pressure Fc of the water producing port (13) and the elastic force Ft of the elastic component, and the pressure born by the two sides of the valve core (2) always meets the following dynamic balance relation: fy + Fn equals Fc + Ft.

2. The wastewater ratio apparatus of claim 1, wherein: the valve is characterized in that one end of the valve sleeve (1) is provided with the original water port (11), the other end of the valve sleeve (1) is a closed end, the peripheral wall of the valve sleeve (1) is provided with the concentrated water port (12), the water producing port (13) and the water discharging port (14), the concentrated water port (12) and the water producing port (13) are respectively positioned at two sides of the valve core (2), the water discharging port (14) is a counter bore, and the valve core (2) is provided with blocking parts (21) which can be limited at two ends (141) of the small-diameter cross section of the counter bore.

3. The wastewater ratio apparatus of claim 2, wherein: the section of the valve core (2) is in a T shape which is transversely arranged, the diameter of the T-shaped end part of the valve core (2) is matched with the inner diameter of the valve sleeve (1), the blocking part (21) is a convex block which radially and outwards extends along the T-shaped end part of the valve core (2), a supporting plate (5) which is consistent with the cross section of the valve sleeve (1) is further formed in a cavity of the valve sleeve (1) close to one side of an original water gap (11), a guide hole for the T-shaped rod part of the valve core (2) to pass through is formed in the supporting plate (5), and the aperture of the guide hole is matched with the diameter of the T-shaped rod of the valve core (2).

4. The wastewater ratio apparatus of claim 2, wherein: the elastic component comprises a spring (3) and an adjusting screw (4), a threaded hole is formed in the closed end of the valve sleeve (1), and the adjusting screw (4) is connected to the threaded hole in a threaded mode; one end of the spring (3) is fixedly connected to the adjusting screw (4), and the other end of the spring (3) is connected with the valve core (2).

5. The wastewater ratio apparatus of claim 1, wherein: the raw water waterway at the front end of the water purifying equipment is connected with the water inlet end of the booster pump (8) through the primary filtering device, and the water outlet end of the booster pump (8) is connected with the water producing end of the water purifying equipment through the secondary filtering device (9).

6. The wastewater ratio apparatus of claim 5, wherein: the front-mounted filter device (7) is a PP cotton filter element and an active carbon filter element.

7. The wastewater ratio apparatus of claim 5, wherein: the second-stage filtering device (9) is a nanofiltration membrane filter element or a reverse osmosis membrane filter element.

Technical Field

The invention relates to a reverse osmosis water purification device, in particular to a wastewater ratio device for a water purifier or a water purifier.

Background

Most of water purifiers or water purifiers in the market rely on a reverse osmosis membrane to purify tap water, the tap water is compressed to pass through the reverse osmosis membrane and then is changed into clear water and concentrated water, and the proportion of the clear water to the concentrated water is the ratio of the waste water.

At present, the waste water ratio is mainly controlled by setting a solenoid valve with a fixed proportion on a waste water branch in the industry, for example, the existing patent No. 201820082279.6 ' RO machine for automatically adjusting waste water ratio ' discloses an RO machine for automatically adjusting waste water ratio ', an RO filter core is provided with two water outlet ends, one end is a pure water end communicated with a faucet, the other end is a concentrated water end leading to a sewer, the pure water end is connected with the faucet after being connected with a third-stage filter core, a water inlet solenoid valve is arranged between the water outlet end of the first-stage filter core and the water inlet end of the RO filter core, the on-off of the water outlet end of the first-stage filter core is controlled by the water inlet solenoid valve, a waste water solenoid valve is arranged between the concentrated water end of the RO filter core and the sewer, the waste water solenoid valve is communicated or the concentrated water end is cut off, the utility model can automatically. In addition, the application number 201611191339.X 'reverse osmosis water purification system capable of adjusting wastewater ratio and an adjusting method thereof' discloses a reverse osmosis water purification system capable of adjusting wastewater ratio and an adjusting method thereof, wherein a wastewater outlet pipeline is arranged at an outlet of a reverse osmosis membrane filter; the front end of the preset filter group is provided with a TDS detection sensor, and the waste water outlet pipeline is provided with an adjustable waste water ratio.

However, the above-mentioned prior art has several problems: firstly, in the prior art, the change of water pressure and water quality is mainly detected by using a TDS sensor or a solenoid valve and the like, only attention is paid to the fact that the TDS value usually ignores the through flow, the through flow is easy to be unstable, and the solenoid valve detection mode has poor reliability and usually causes pipeline problems due to power failure; secondly, the existing wastewater is easy to cause blockage in a drainage position, a poking needle or a flushing electromagnetic valve needs to be additionally arranged for dredging the blockage, the structure is complex, and the dredging effect is limited; moreover, the existing wastewater ratio devices are arranged behind the filtering system, the pressure in front of the membrane cannot be sensed, and the pressure change of the raw water pressure affects the pressure of the water produced by the pump, so that the damage to the filtering membrane is easily caused; in addition, the existing method adopts a fixed wastewater ratio, so that the selectivity is too low, the places with poor water quality are not washed enough, and the places with good water quality cause waste of washing water.

In conclusion, the existing wastewater treatment device has the defects of easy blockage, unstable performance and the like, and further improvement is needed.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a wastewater ratio device which does not need to be controlled electrically and has stable performance aiming at the current state of the prior art, the wastewater ratio device can automatically adjust the wastewater ratio according to the water yield, and can also realize the automatic cleaning of the wastewater ratio.

The technical scheme adopted by the invention for solving the technical problems is as follows: a waste water ratio device is characterized in that: the waste water ratio device comprises

The water purifying device comprises a valve sleeve, a water inlet, a water outlet and a water outlet, wherein the valve sleeve is provided with a raw water port, a concentrated water port, a water producing port and a water outlet, the raw water port is communicated with a raw water waterway at the front end of the water purifying equipment, the concentrated water port is communicated with the water outlet end of a booster pump of the water purifying equipment, and the water producing port is communicated with the water producing end of the water purifying equipment;

the valve core is arranged in the valve sleeve in an axially sliding manner, the valve core isolates the raw water port, the concentrated water port and the water production port from each other and is not communicated with each other, the water outlet is isolated from the raw water port and the water production port respectively, the water outlet is always communicated with the concentrated water port, and the valve core can control the opening size of the water outlet;

the elastic component is arranged in the valve sleeve, the fixed end of the elastic component is connected with the valve sleeve, and the elastic movable end of the elastic component is connected with the valve core;

one side of the valve core bears the sum of the water pressure Fy of the original water gap and the water pressure Fn of the concentrated water gap, the other side of the valve core bears the sum of the water pressure Fc of the water producing gap and the elastic force Ft of the elastic component, and the pressure born by the two sides of the valve core always satisfies the following dynamic balance relation: fy + Fn equals Fc + Ft.

Preferably, the cross section of the valve sleeve is rectangular, one end of the valve sleeve is provided with the original water gap, the other end of the valve sleeve is a closed end, the peripheral wall of the valve sleeve is provided with the concentrated water gap, the water producing gap and the water discharging gap, the concentrated water gap and the water producing gap are respectively positioned at two sides of the valve core, the water discharging gap is a counter bore, and the valve core is provided with blocking parts which can be limited at two ends of the small-diameter cross section of the counter bore; the raw water port, the concentrated water port and the water producing port only feed water and do not discharge water, and the water discharging port only discharges water and does not feed water.

The structure of the valve core can adopt various shapes, and is convenient for production, manufacture and assembly, preferably, the valve core can adopt the shape of a piston rod, namely the section of the valve core is in a T shape and is transversely and slidably arranged in the valve sleeve, the T-shaped section of the valve core comprises a T-shaped end part and a T-shaped rod part, the diameter of the T-shaped end part is matched with the inner diameter of the valve sleeve, namely the T-shaped end part of the valve core is in slidable fit with the inner diameter of the valve sleeve, the T-shaped end part of the valve core is matched with the inner diameter of the valve sleeve to divide the inner cavity of the valve sleeve into two parts which are not communicated, a convex block extends outwards along the radial direction from the T-shaped end part of the valve core, the convex block is a blocking part which can be limited at two ends of the small-diameter cross section of the countersunk hole, a support plate which is consistent with the size of the cross section of the valve sleeve is also formed, the aperture size of the guide hole is matched with the diameter size of the T-shaped rod of the valve core, so that the T-shaped rod part can just penetrate through the guide hole and realize axial sliding.

Preferably, the elastic component comprises a spring and an adjusting screw, the closed end of the valve sleeve is provided with a threaded hole, the adjusting screw is in threaded connection with the threaded hole, and fine adjustment of the distance between the spring and the valve core can be realized by rotating the adjusting screw; one end of the spring is fixedly connected to the adjusting screw, and the other end of the spring is connected with the valve core.

In order to realize water purification, preferably, the raw water waterway at the front end of the water purification device is connected with the water inlet end of the booster pump through the primary filtering device, and the water outlet end of the booster pump is connected with the water production end of the water purification device through the secondary filtering device. In order to further improve the water quality, a third-stage filtering device and a fourth-stage filtering device can be additionally arranged behind the second-stage filtering device, and matching and installation can be carried out according to actual needs.

Preferably, the pre-filter device can be a PP cotton filter element and an activated carbon filter element.

As preselection, the secondary filtering device can be a nanofiltration membrane filter element or a reverse osmosis membrane filter element.

Compared with the prior art, the invention has the advantages that: the waste water ratio device adopts pure water pressure control, and realizes the back-and-forth movement of the valve core (the change of the size of the water outlet) through the dynamic pressure balance at the two ends of the valve core, thereby realizing the automatic adjustment of the waste water ratio, the adjustment process does not need electric control, the interference of voltage fluctuation is small, the control is more stable and reliable, the cleaning of the waste water ratio can be realized in the back-and-forth movement process of the valve core, the waste water ratio blockage can be effectively prevented without additionally arranging blockage passing equipment, and the whole structure is simple and easy to implement; secondly, the raw water waterway is directly connected to the wastewater ratio, so that the change of the water pressure of the raw water can be sensed more intuitively, the pressure in front of the membrane of the filtering device is adjusted in time according to the change of the raw water waterway, and the damage to the filtering membrane caused by unstable water pressure of the raw water is further prevented; the change of the pressure of the water production port can reflect the change of the pressure behind the membrane, and according to the dynamic pressure balance relation of the two sides of the valve core and the feedback of the pressure behind the membrane, the size of the wastewater ratio is automatically adjusted, so that the service life of the filtering membrane is prolonged, and meanwhile, the stability of the flow rate can be ensured.

Drawings

FIG. 1 is a schematic view of a waste water ratio device according to an embodiment of the present invention (with the valve core located at a middle position).

Fig. 2 is a second schematic structural view (the valve core is located at the left limit position) of the waste water ratio device according to the embodiment of the invention.

Fig. 3 is a third schematic view of the waste water ratio device according to the embodiment of the present invention (the valve core is located at the right limit position).

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to fig. 3, the present embodiment discloses a wastewater ratio device, which is disposed in a water path of a water purification apparatus, and forms a system with a pre-filter 7, a booster pump 8 and a secondary filter 9, in order to realize water purification, a raw water path at the front end of the water purification apparatus is connected to a water inlet end of the booster pump 8 through a primary filter, and a water outlet end of the booster pump 8 is connected to a water production end of the water purification apparatus through the secondary filter 9. In order to further improve the water quality, a third-stage filtering device and a fourth-stage filtering device can be additionally arranged behind the second-stage filtering device 9, and matching and installation can be carried out according to actual requirements; in this embodiment, the pre-filtering device 7 may preferably be a PP cotton filter element and an activated carbon filter element, and the secondary filtering device 9 may preferably be a nano-filtration membrane filter element or a reverse osmosis membrane filter element with a finer filtering grade.

The waste water ratio device of the embodiment comprises a valve sleeve 1, a valve core 2 which can axially slide and is arranged in the valve sleeve 1, and an elastic component which is arranged in the valve sleeve 1.

The valve sleeve 1 is a shaft sleeve with a rectangular cross section, one end of the valve sleeve 1 is provided with a raw water port 11, the other end of the valve sleeve 1 is a closed end, the outer peripheral wall of the valve sleeve 1 is provided with a concentrated water port 12, a water production port 13 and a water discharge port 14, the raw water port 11 is communicated with a raw water waterway at the front end of the water purifying equipment, the concentrated water port 12 is positioned in front of the secondary filtering device 9 and is communicated with the water discharge end of a booster pump 8 of the water purifying equipment, and the water production port 13 is communicated with the water production end of the water purifying; the raw water port 11, the concentrated water port 12 and the water producing port 13 only feed water and do not discharge water, the water discharging port 14 only discharges water and does not feed water, the waterway of the water discharging port 14 is also provided with a check valve 6, and waste water is discharged through the check valve 6.

The structure of the valve core 2 can adopt various shapes, and in order to facilitate production, manufacture and assembly, the valve core 2 can adopt the shape of a piston rod, namely the section of the valve core 2 is T-shaped and can be transversely and slidably arranged in the valve sleeve 1;

specifically, the T-shaped cross section of the valve core 2 comprises a T-shaped end part and a T-shaped rod part, the diameter of the T-shaped end part is matched with the inner diameter of the valve sleeve 1, namely, the T-shaped end part of the valve core 2 is in sliding fit with the inner diameter of the valve sleeve 1, and the T-shaped end part and the inner diameter of the valve sleeve 1 are matched to divide the inner cavity of the valve sleeve 1 into two parts which are not communicated with each other, a concentrate water port 12 and a water production port 13 which are arranged on the outer peripheral wall of the valve sleeve 1 are respectively positioned on two sides of the valve core 2 and are isolated by the valve;

the valve core 2 can control the opening size of the water outlet 14, the water outlet 14 of the embodiment is a countersunk hole, the valve core 2 is provided with a blocking part 21 which can be limited at two ends 141 of the small-diameter cross section of the countersunk hole, a convex block is extended outwards from the T-shaped end part of the valve core 2 along the radial direction, and the convex block is the blocking part 21;

and the valve sleeve 1 is also provided with a support plate 5 which is consistent with the cross section of the valve sleeve 1 in size in the cavity close to the original water gap 11, the support plate 5 isolates the original water from the concentrated water, the support plate 5 is provided with a guide hole for the T-shaped rod part of the valve core 2 to pass through, the aperture of the guide hole is matched with the diameter of the T-shaped rod of the valve core 2, so that the T-shaped rod part can just pass through the guide hole and realize axial sliding. Then, the valve core 2 divides the valve housing 1 into a first chamber a, a second chamber B and a third chamber C which are not communicated with each other, so that the raw water port 11, the concentrated water port 12 and the produced water port 13 are isolated from each other and not communicated with each other, and the drain port 14 is isolated from the raw water port 11 and the produced water port 13, respectively.

The elastic component of the embodiment comprises a spring 3 and an adjusting screw 4, a threaded hole is formed in the closed end of the valve sleeve 1, the thread of the adjusting screw 4 is used as the fixed end of the elastic component and is in threaded connection with the threaded hole, and fine adjustment of the distance between the spring 3 and the valve core 2 can be realized by rotating the adjusting screw 4; one end of the spring 3 is fixedly connected to the adjusting screw 4, the other end of the spring 3 is connected to the valve core 2 as an elastic movable end of the elastic component, and when the valve core 2 moves axially along the valve sleeve 1, the spring 3 has a tendency of always keeping the valve core 2 away from the adjusting screw 4.

In the embodiment, a pure water pressure control principle is adopted, one side of the valve core 2 bears the sum of the water pressure Fy of the raw water port 11 and the water pressure Fn of the concentrated water port 12, the other side of the valve core 2 bears the sum of the water pressure Fc of the water producing port 13 and the elastic force Ft applied to one side of the valve core 2 and coming from the elastic component, and the pressure born by the two sides of the valve core 2 always satisfies the following dynamic balance relationship: fy + Fn ═ Fc + Ft; the waste water ratio device of this embodiment takes former mouth of a river 11 pressure, membrane preceding pressure (dense mouth of a river 12 pressure) and membrane after pressure (produces mouth of a river 13 pressure), wherein former mouth of a river 11 pressure is representing the pressure of running water, and the pressure value can be characterized as the pressure that the membrane bore, and when the membrane blocks up or the pressure boost of booster pump 8 becomes big, this pressure can increase, produces the mouth of a river 13 pressure and represents the size of water purification output, and when the water purification flow is big, produces the pressure of mouth of a river 13 and also can increase.

The reason for selecting the original water gap 11 pressure, the pressure before the membrane and the pressure after the membrane in the embodiment is that the original water gap 11 pressure may cause unstable water pressure due to a water plant, the pressure before the membrane is unstable and easily damages the membrane, the original water gap 11 pressure is collected and acted on the original water gap 11 of the waste water ratio device, and the waste water ratio can sense the original water pressure change in advance, so that the opening size of the water outlet 14 is controlled, and the pressure is discharged;

the membrane front pressure reflects the blocking degree of the membrane to a certain degree, when the membrane front pressure is increased, the water outlet 14 can be controlled to be enlarged, the adjustment of the wastewater ratio is realized, and the membrane is prevented from being damaged;

the pressure behind the membrane (the pressure of the water producing port 13) reflects the magnitude of the purified water quantity, and when the water quality is better and the membrane is less blocked, the water discharging port 14 is reduced, so that more water is filtered through the membrane to generate more purified water; when the membrane is blocked more, the purified water amount is reduced, the valve core 2 moves to the right, the water discharge amount is increased, the membrane is sufficiently cleaned, and after the membrane is washed clean, the water outlet 14 is reduced, and the water waste is reduced.

As shown in fig. 2, when the valve core 2 of the waste water ratio device moves to the left limit position, at this time, the blocking part 21 of the valve core 2 abuts against the left end of the small-diameter cross section of the counter bore of the drain port 14, the drain port 14 is closed, the valve core 2 does not block the concentrate port 12, and the valve core 2 does not block the original port 11 to influence the water inlet of the original port 11; as shown in fig. 3, when the valve body 2 of the waste water ratio device is moved to the right limit position, the stopper 21 of the valve body 2 abuts against the right end of the small diameter cross section of the counterbore of the drain port 14, the drain port 14 is opened to the maximum position, the concentrate port 12 and the drain port 14 are kept in a communication state, and the valve body 2 does not block the water producing port 13.

Therefore, with the wastewater ratio device of the embodiment, the following technical effects can be achieved:

1. ensuring the pressure stability before the membrane and preventing the membrane from being damaged: when the raw water pressure changes, the membrane front pressure changes easily, and especially after the booster pump 8 is boosted, the membrane front pressure is large, frequent pressure changes easily cause the membrane front pressure to be unstable, and membrane damage is caused. After the wastewater ratio device of the embodiment is adopted, when the raw water pressure is increased, the water pressure Fy of the raw water port 11 is also increased, and at the moment, the water pressure Fn of the concentrated water port 12, the water pressure Fc of the water production port 13 and the elastic force Ft are not changed, so that Fy + Fn is greater than Fc + Ft, and therefore, in order to keep the pressure dynamic balance, the valve core 2 moves rightwards, the water discharge port 14 is increased, and the filtering membrane is protected; when the original water pressure is reduced, the valve core 2 moves leftwards according to the principle, the water outlet 14 is reduced, and the pressure on the two sides of the valve core 2 is kept stable again.

2. Automatically adjusting the wastewater ratio according to the water yield: after the reverse osmosis membrane or the nanofiltration membrane is used for a long time, impurities are accumulated on the surface of the membrane, so that the water yield is reduced, the pressure of wastewater in comparison with the water yield port 13 is reduced, the water pressure Fc of the water yield port 13 is reduced, at the moment, Fy + Fn is greater than Fc + Ft, then the valve core 2 moves rightwards, the water discharge port 14 is increased, the flow velocity of water flow in front of the membrane is increased, and the impurities are flushed and discharged; after the impurities are discharged, the water yield is increased, the pressure of the waste water is increased compared with the water yield port 13, namely the water pressure Fc of the water yield port 13 is increased, at the moment, Fy + Fn is less than Fc + Ft, the valve core 2 moves leftwards, the water discharge port 14 is reduced again, and the waste of washing water can be reduced. The dynamic adjustment of the wastewater ratio can be realized through the pressure balance principle, the wastewater ratio is subjected to stepless dynamic adjustment in the process, the stability of the water yield can be ensured, the water yield cannot be neglected, and the stability and the comfort degree of the water for users are ensured.

3. Automatic clean waste water ratio: in the process that the water pressure and the water yield are changed continuously, impurities accumulated in the waste water ratio can fall off and be discharged along with the continuous left-right movement of the valve core 2, in addition, the water outlet 14 is designed into a counter bore, the small-diameter end of the counter bore forms a step, the blocking part 21 of the valve core 2 extends into the small-diameter end, the water outlet 14 can be washed and cleaned continuously in the left-right reciprocating movement of the valve core 2, and the accumulation of the impurities in the water outlet 14 can be prevented.

This embodiment is through detecting running water pressure, membrane front pressure and water purification output, with these different pressure points loading on case 2 in the water route, realizes 14 size automatically regulated in outlet through the dynamic balance of case 2 both ends pressure, need not the sensor, and the detection mode is simpler, the test result is more stable.