CN216638990U - Filter element - Google Patents

Abstract

The utility model relates to a filter element. The filter element of the utility model comprises: the water storage device comprises a shell, a separator and a water storage bag; the housing has a first port, a second port; the partition is arranged in the inner cavity of the shell, the partition divides the inner cavity of the shell into a first water chamber and a second water chamber, the first water chamber is communicated with the first water port, the second water chamber is communicated with the second water port, and a through hole is formed in the partition; the water storage bag is made of elastic materials, is arranged in the second water chamber and divides the second water chamber into a third water chamber and a fourth water chamber, and the third water chamber is communicated with the first water chamber through the through hole; the filtering device comprises a first filtering piece and a second filtering piece, wherein the first filtering piece is arranged in the first water chamber, and the second filtering piece is arranged in the fourth water chamber.

Description

Filter element

Technical Field

The utility model relates to the field of water purification, in particular to a filter element.

Background

The water purifier is a water purifying device which purifies water by adopting a multi-stage filter element, removes impurities and certain element substances in water by physical methods such as filtration, adsorption, reverse osmosis and the like, particularly, a reverse osmosis membrane in the filter element can intercept organic pollutants and inorganic ions in the water and filter out direct-drinking pure water.

When crossing the pure water of crossing, reverse osmosis membrane still can appear the higher dense water of salt content, and when the purifier stop work, dense water can remain in the reverse osmosis filter element, and long-time dense water can permeate to reverse osmosis membrane's pure water side, leads to the pure water TDS value of staying in the water purifier to rise by a wide margin, and the easy scale deposit of long-time remaining dense water influences the reverse osmosis membrane life-span. Therefore, a forward or reverse flushing of the reverse osmosis membrane is required. To this end, the applicant has designed a filter cartridge which can be used to flush a reverse osmosis membrane.

SUMMERY OF THE UTILITY MODEL

In view of this, the object of the utility model is to provide a filter element which can be used for rinsing reverse osmosis membranes.

A filter cartridge comprising a water storage device and a filter device disposed in the water storage device, the water storage device comprising: a housing having a first interface, a second interface, a third interface, and a fourth interface; the separator is arranged in the inner cavity of the shell and divides the inner cavity of the shell into a first water chamber and a second water chamber, and a through hole is formed in the separator; the water storage bag is made of elastic materials and arranged in the second water chamber, the second water chamber is divided into a third water chamber and a fourth water chamber by the water storage bag, the third water chamber is communicated with the first water chamber through the through hole, and the fourth water chamber is communicated with the third interface and the fourth interface respectively.

Further, a valve is arranged on the partition and used for controlling the opening and closing of the through hole; the valve has two working states, and when the valve is in a first working state, the through hole is opened; when the valve is in the second working state, the valve closes the through hole.

Furthermore, a circulation channel is arranged on the valve, and the first water chamber and the third water chamber are communicated through the circulation channel; when the valve is in a first working state, the through hole is opened, and the flow rate of liquid entering the third water chamber from the first water chamber is greater than the flow rate of liquid entering the first water chamber from the third water chamber; when the valve is in a second working state, the valve closes the through hole, and the liquid in the first water chamber enters the third water chamber through the circulation channel.

Further, a mounting hole is provided on the partition, and the through hole is located on an outer peripheral side of the mounting hole; the valve is installed in the installation hole, and the valve slides in the installation hole.

Further, the valve comprises a base body, a sealing element and a limiting element, wherein the base body is inserted into the mounting hole, the base body slides in the mounting hole, the sealing element and the limiting element are respectively arranged at two ends of the base body, and the sealing element and the limiting element are respectively positioned at two sides of the partition; when the valve is in a first working state, the sealing element is separated from the partition, and the through hole is opened; when the valve is in a second working state, the sealing element is attached to the separating element, and the sealing element closes the through hole.

Furthermore, a flow channel is arranged on the valve, the flow channel penetrates through the base body, the flow channel extends from the end face of the limiting piece to the end face of the sealing piece, and the first water chamber and the third water chamber are communicated through the flow channel; when the valve is in a first working state, the through hole is opened, and the flow rate of liquid entering the third water chamber from the first water chamber is greater than the flow rate of liquid entering the first water chamber from the third water chamber; when the valve is in a second working state, the valve closes the through hole, and the liquid in the first water chamber enters the third water chamber through the circulation channel.

Furthermore, a guide inclined plane is arranged at one end, far away from the base body, of the limiting piece.

Further, an inner container is arranged on the partition, the inner container is formed by sinking the partition to the first water chamber, the water storage bag is arranged in an inner cavity of the inner container, and the outer surface of the water storage bag and the surface of the inner cavity of the inner container form the third water chamber.

Further, the water storage device further comprises a pressing piece, and the pressing piece is detachably mounted on the partition; the opening of the water storage bag is outwardly extended with a flange, the flange extends from the opening of the water storage bag to the outer peripheral side of the opening of the inner container, and the flange is positioned between the pressing piece and the separator.

Furthermore, a concave part is arranged on the flanging, and the concave part is positioned in the inner container; an insert is arranged on the pressing piece and is inserted into the concave part, and part of the concave part is positioned between the inner container and the insert; the inner surface of the inner container and the plug-in unit simultaneously prop against the flanging; the elastic material for manufacturing the water storage bag can be rubber, SEBS (styrene-ethylene-butadiene-styrene) material or SBS (styrene-butadiene-styrene) material; the filter device comprises a first filter element and a second filter element, wherein the first filter element is arranged in the first water chamber, and the second filter element is arranged in the fourth water chamber; the first filter element is positioned between the first and second interfaces; the first filter piece is sleeved on the outer peripheral side of the inner container; the second filter element is positioned between the third interface and the fourth interface; the second filter is arranged above the first filter, and the axis of the first filter and the axis of the second filter are positioned on the same straight line.

For a better understanding and practice, the utility model is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic external view of a filter cartridge according to an embodiment;

FIG. 2 is a top view of a filter cartridge according to an embodiment;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic view of the inner container and the valve according to the embodiment;

FIG. 6 is an enlarged schematic view at A in FIG. 3;

FIG. 7 is an enlarged schematic view at B of FIG. 3;

reference numerals:

11. a housing; 111. a first interface; 112. a second interface; 113. a third interface; 114. a fourth interface; 115. a first water chamber; 116. a second water chamber; 117. a third water chamber; 118. a fourth water chamber; 12. a separator; 121. a through hole; 122. mounting holes; 123. an inner container; 13. a water storage bag; 131. flanging; 132. a recess; 14. a valve; 141. a flow-through channel; 142. a substrate; 143. a seal member; 144. a limiting member; 145. a guide slope; 15. pressing parts; 151. a plug-in; 21. a first filter member; 22. a second filter element.

Detailed Description

A filter element, see fig. 1 to 7, comprises a water storage device and a filtering device. Wherein, filter equipment sets up in water storage device's inner chamber.

Referring to fig. 1 to 7, the water storage device includes a housing 11, a partition 12, and a water storage bladder 13. The housing 11 is provided with a first port 111, a second port 112, a third port 113, and a fourth port 114. The partition 12 is disposed in the inner cavity of the housing 11, the partition 12 divides the inner cavity of the housing 11 into a first water chamber 115 and a second water chamber 116 which are independent from each other and are not communicated with each other, the first water chamber 115 is communicated with the first interface 111 and the second interface 112, and the second water chamber 116 is communicated with the third interface 113 and the fourth interface 114; a through hole 121 is provided in the separator 12. The water storage bag 13 is made of an elastic material, the water storage bag 13 is arranged in the second water chamber 116, the water storage bag 13 divides the second water chamber 116 into a third water chamber 117 and a fourth water chamber 118 which are independent from each other and are not communicated, the third water chamber 117 is formed by the outer surface of the water storage bag 13 and the surface of the partition 12, the fourth water chamber 118 is formed by the inner surface of the water storage bag 13 and the inner surface of the shell 11, the inner cavity of the water storage bag 13 is a part of the fourth water chamber 118, the third water chamber 117 is communicated with the first water chamber 115 through a through hole 121 of the partition 12, and the fourth water chamber 118 is respectively communicated with the third interface 113 and the fourth interface 114.

The use process comprises the following steps: first, the first liquid enters the fourth water chamber 118, and the first liquid enters the water storage bag 13 from the fourth water chamber 118; during the period, the water storage bag 13 is continuously filled with the first liquid and gradually unfolded until the water storage bag 13 reaches the maximum storage capacity, and the supply of the first liquid is stopped; when needing to wash reverse osmosis membrane, the second liquid gets into first hydroecium 115, and the second liquid enters into third hydroecium 117 from first hydroecium 115, waits that the second liquid fills third hydroecium 117 back, and the second liquid extrudes water storage bag 13, and the interior first liquid flow direction of water storage bag 13 is reverse osmosis membrane, and first liquid washes reverse osmosis membrane.

Referring to fig. 1 to 7, a valve 14 is provided on the partition 12, and the valve 14 controls opening and closing of the through-hole 121. The valve 14 has two working states, when the valve 14 is in the first working state, the through hole 121 is opened, and the second liquid can enter the third water chamber 117 from the first water chamber 115; when the valve 14 is in the second operational state, the through hole 121 is closed and no second liquid can enter the first chamber 115 from the third chamber 117. When the reverse osmosis membrane is washed, the pressure of the liquid for washing the reverse osmosis membrane is changed; when the pressure of the first liquid increases, the valve 14 closes the through hole 121, and the first liquid between the first water chamber 115 and the third water chamber 117 does not flow through each other; after the pressure of the first liquid is recovered, the valve 14 opens the through hole 121, the second liquid enters the third water chamber 117 from the first water chamber 115, the second liquid presses the water storage bag 13, and the first liquid continues to flow to the reverse osmosis membrane. Adopt stable water pressure to wash reverse osmosis membrane, avoid rivers to damage reverse osmosis membrane, help protecting reverse osmosis membrane and extension reverse osmosis membrane's life.

Further, a flow passage 141 is provided in the valve 14, and the first chamber 115 and the third chamber 117 communicate with each other through the flow passage 141. The valve 14 has two working states, when the valve 14 is in the first working state, the through hole 121 is opened, and the flow rate of the second liquid entering the third water chamber 117 from the first water chamber 115 is greater than the flow rate of the second liquid entering the first water chamber 115 from the third water chamber 117; when the valve 14 is in the second working state, the through hole 121 is closed, and the second liquid in the first water chamber 115 enters the third water chamber 117 through the flow passage 141. In the process of washing the reverse osmosis membrane, when the pressure of the first liquid is increased, the valve 14 closes the through hole 121, the second liquid in the first water chamber 115 flows into the third water chamber 117 through the flow channel 141, the pressure variation amplitude of the first liquid in the fourth water chamber 118 is reduced, the water flow reverse osmosis membrane is avoided, and the protection of the reverse osmosis membrane and the prolonging of the service life of the reverse osmosis membrane are facilitated.

Still further, the partitioning member 12 is provided with a mounting hole 122, and the through-hole 121 is located on the outer peripheral side of the mounting hole 122. The valve 14 is made of an elastic material, the valve 14 is installed in the installation hole 122, and the valve 14 reciprocates in the installation hole 122. The valve 14 includes a base 142, a sealing member 143, and a limiting member 144, the base 142 is inserted into the mounting hole 122, the base 142 slides in the mounting hole 122, the sealing member 143 and the limiting member 144 are respectively disposed at two ends of the base 142, the sealing member 143 and the limiting member 144 are respectively located at two sides of the partition 12, the flow channel 141 penetrates through the base 142, and the flow channel 141 extends from an end surface of the limiting member 144 to an end surface of the sealing member 143. When the valve 14 is in the first working state, the sealing member 143 is separated from the partition member 12, and the through hole 121 is opened; when the valve 14 is in the second operating state, the sealing member 143 abuts against the partition member 12, and the sealing member 143 closes the through hole 121.

Still further, a guiding inclined surface 145 is provided at an end of the stopper 144 away from the base 142. Under the action of the guiding inclined surface 145, the limiting member 144 can be conveniently inserted into and pass through the mounting hole 122.

Referring to fig. 1 to 7, partition 12 is provided with inner container 123, and inner container 123 is recessed from partition 12 toward first water chamber 115. The water storage bag 13 is disposed in the inner cavity of the inner container 123, and the outer surface of the water storage bag 13 and the inner cavity surface of the inner container 123 form a third water chamber 117. The through-hole 121 is provided on the inner cavity surface of the inner container 123. The extension direction and the expansion size of the water storage bag 13 are limited by the inner container 123, which helps to prolong the service life of the water storage bag 13 by preventing the water storage bag 13 from being excessively deformed, and helps to protect the filter device by preventing the water storage bag 13 from damaging the filter device.

Referring to fig. 1 to 7, the elastic material used to manufacture the water storage bladder 13 may be rubber, SEBS material, SBS material, or the like. The SEBS or SBS material has good plasticity and expansion performance similar to that of rubber material, but may be injection molded easily and has simple production process.

Referring to fig. 1 to 7, the water storage device further includes a pressing member 15, the pressing member 15 being detachably mounted on the partition 12, the pressing member 15 being provided on an opening outer circumferential side of the inner container 123. A flange 131 is arranged at the opening of the water storage bag 13, the flange 131 is integrally formed with the water storage bag 13, the flange 131 extends from the opening of the water storage bag 13 to the periphery of the opening of the liner 123, and the flange 131 is positioned between the pressing piece 15 and the partition 12. The pressing member 15 presses the flange 131 of the water storage bag 13 against the partition 12, so that the water storage bag 13 is fixedly installed in the inner container 123. In addition, since the flange 131 is also made of an elastic material, the flange 131 can also play a role of sealing.

Further, a recess 132 is provided on the flange 131 of the water storage bag 13, and the recess 132 is located in the inner container 123 of the partition 12. An insert 151 is provided on the pressing member 15, the insert 151 is inserted into the recess 132, and a portion of the recess 132 is located between the inner container 123 and the insert 151.

Still further, the inner wall of the inner container 123 and the insert 151 simultaneously abut against the flange 131, and the sealing function of the flange 131 can be further improved.

Referring to fig. 1 to 7, the filter device includes a first filter member 21 and a second filter member 22. The first filter 21 is disposed in the first water chamber 115, the first filter 21 is located between the first connector 111 and the second connector 112, the first filter 21 is sleeved on the outer peripheral side of the inner container 123, the first filter 21 can be a combination of one or more of filter materials such as PP cotton and activated carbon, and in this embodiment, the first filter 21 is activated carbon. The second filter 22 is disposed in the fourth water chamber 118, the second filter 22 is located between the third interface 113 and the fourth interface 114, and the second filter 22 may be one or more combinations of PP cotton, activated carbon, and the like, in this embodiment, the second filter 22 is activated carbon.

Further, in order to reduce the overall volume of the filter cartridge, the second filter member 22 is disposed above the first filter member 21, and the axis of the first filter member 21 and the axis of the second filter member 22 are aligned.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model.

Claims (10)

1. A filter cartridge, wherein the filter cartridge comprises a water storage device and a filter device disposed in the water storage device, the water storage device comprising:

a housing (11), the housing (11) having a first interface (111), a second interface (112), a third interface (113), and a fourth interface (114);

a partition (12), wherein the partition (12) is arranged in the inner cavity of the shell (11), the partition (12) divides the inner cavity of the shell (11) into a first water chamber (115) and a second water chamber (116), and a through hole (121) is formed in the partition (12);

water storage bag (13), water storage bag (13) are made by elastic material, water storage bag (13) set up in second hydroecium (116), water storage bag (13) will third hydroecium (117), fourth hydroecium (118) are separated into in second hydroecium (116), third hydroecium (117) pass through-hole (121) are in order to be linked together with first hydroecium (115), fourth hydroecium (118) respectively with third interface (113) fourth interface (114) are linked together.

2. The filter cartridge of claim 1, wherein: a valve (14) is arranged on the partition (12), and the valve (14) is used for controlling the opening and closing of the through hole (121); the valve (14) has two operating states, the through hole (121) being open when the valve (14) is in a first operating state; when the valve (14) is in the second working state, the valve (14) closes the through hole (121).

3. The filter cartridge of claim 2, wherein: a flow channel (141) is arranged on the valve (14), and the first water chamber (115) is communicated with the third water chamber (117) through the flow channel (141); when the valve (14) is in the first working state, the through hole (121) is opened, and the flow rate of the liquid entering the third water chamber (117) from the first water chamber (115) is larger than the flow rate of the liquid entering the first water chamber (115) from the third water chamber (117); when the valve (14) is in the second working state, the valve (14) closes the through hole (121), and the liquid in the first water chamber (115) enters the third water chamber (117) through the flow passage (141).

4. A filter cartridge as recited in claim 3, wherein: a mounting hole (122) is provided in the partition (12), and the through hole (121) is located on the outer peripheral side of the mounting hole (122); the valve (14) is mounted in the mounting hole (122), and the valve (14) slides in the mounting hole (122).

5. The filter cartridge of claim 4, wherein: the valve (14) comprises a base body (142), a sealing element (143) and a limiting element (144), the base body (142) is inserted into the mounting hole (122), the base body (142) slides in the mounting hole (122), the sealing element (143) and the limiting element (144) are respectively arranged at two ends of the base body (142), and the sealing element (143) and the limiting element (144) are respectively positioned at two sides of the partition element (12); when the valve (14) is in a first working state, the sealing element (143) is separated from the partition (12), and the through hole (121) is opened; when the valve (14) is in the second working state, the sealing element (143) is attached to the partition (12), and the sealing element (143) closes the through hole (121).

6. The filter cartridge of claim 5, wherein: a flow channel (141) is arranged on the valve (14), the flow channel (141) penetrates through the base body (142), the flow channel (141) extends from the end face of the limiting piece (144) to the end face of the sealing piece (143), and the first water chamber (115) and the third water chamber (117) are communicated through the flow channel (141); when the valve (14) is in the first working state, the through hole (121) is opened, and the flow rate of the liquid entering the third water chamber (117) from the first water chamber (115) is larger than the flow rate of the liquid entering the first water chamber (115) from the third water chamber (117); when the valve (14) is in the second working state, the valve (14) closes the through hole (121), and the liquid in the first water chamber (115) enters the third water chamber (117) through the flow passage (141).

7. The filter cartridge of claim 5, wherein: and a guide inclined surface (145) is arranged at one end of the limiting piece (144) far away from the base body (142).

8. The filter cartridge of claim 1, wherein: be provided with inner bag (123) on separator (12), inner bag (123) are followed separator (12) are gone up to first hydroecium (115) are sunken to be formed, reservoir bag (13) set up in the inner chamber of inner bag (123), the surface of reservoir bag (13) with the inner chamber surface of inner bag (123) forms third hydroecium (117).

9. The filter cartridge of claim 8, wherein: the water storage device further comprises a pressing piece (15), and the pressing piece (15) is detachably mounted on the partition (12); a flanging (131) extends outwards from the opening of the water storage bag (13), the flanging (131) extends from the opening of the water storage bag (13) to the outer periphery of the opening of the liner (123), and the flanging (131) is located between the pressing piece (15) and the partition (12).

10. The filter cartridge of claim 9, wherein:

a concave part (132) is arranged on the flanging (131), and the concave part (132) is positioned in the inner container (123); an insert (151) is arranged on the pressing piece (15), the insert (151) is inserted in the concave part (132), and part of the concave part (132) is positioned between the inner container (123) and the insert (151);

the inner surface of the inner container (123) and the insert (151) simultaneously abut against the flanging (131);

the elastic material for manufacturing the water storage bag (13) can be rubber, SEBS material or SBS material;

the filtering device comprises a first filter element (21), a second filter element (22), the first filter element (21) being arranged in the first water chamber (115), the second filter element (22) being arranged in the fourth water chamber (118);

the first filter element (21) is located between the first connection (111) and the second connection (112);

the first filter piece (21) is sleeved on the outer peripheral side of the inner container (123);

the second filter element (22) is located between the third connection (113) and the fourth connection (114);

the second filter element (22) is arranged above the first filter element (21), and the axis of the first filter element (21) and the axis of the second filter element (22) are located on the same line.

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