CN217139961U

CN217139961U - Center tube and filter element

Info

Publication number: CN217139961U
Application number: CN202220191046.6U
Authority: CN
Inventors: 罗庭剑; 史鑫; 余锋
Original assignee: Guangdong Shuihudun Health Technology Co Ltd
Current assignee: Guangdong Shuihudun Health Technology Co Ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-08-09
Anticipated expiration: 2032-01-24

Abstract

The utility model relates to a center tube and a filter core that has this center tube. Center tube include: the water inlet and the water outlet are respectively communicated with the water inlet and the water outlet; and the second half pipe is provided with a second water inlet, the second half pipe is arranged on the first half pipe, a second channel is formed between the second half pipe and the first half pipe, and the second channel is respectively communicated with the second water inlet and the second water outlet. The inside manufacturability of center tube be higher, and the sectional area of catchmenting is great, can produce bigger pure water flow for original scheme.

Description

Center tube and filter element

Technical Field

The utility model relates to a water purification unit technical field especially relates to a center tube and a filter core that has this center tube.

Background

The reverse osmosis water purifier is a machine mainly utilizing the reverse osmosis principle to perform water treatment, and soluble solids such as inorganic salt ions and the like in raw water are filtered by a reverse osmosis filter element to obtain pure water and discharge concentrated water.

The applicant filed a utility model patent, please refer to chinese patent No. CN202122690181.3, which discloses a reverse osmosis filter element, which divides the water flow channel of the central tube into a pure water flow channel and a raw water flow channel or a concentrated water flow channel, so that raw water can enter the reverse osmosis filter element from the central tube, or raw water can directly enter the reverse osmosis filter element from the upper end of the reverse osmosis membrane element for filtration, so as to switch the gap between the membrane shell and the outer shell into a pure water chamber, when the user closes the faucet, after stopping water production, a large amount of pure water is distributed in the pure water flow channel, the pure water collecting chamber, the pure water chamber and the pure water drainage chamber, and only a small amount of raw water or concentrated water is distributed in the water flow channel or the reverse osmosis membrane element, so that the small amount of raw water or concentrated water does not cause osmotic pollution to a large amount of pure water, which solves the problem that the user stops water for a long time, the TDS content of the first cup of water is high.

However, in this solution, the applicant has found that the manufacturability of the central tube is not high when the central tube is designed with a conventional diameter. In addition, the ratio of the water collection sectional area to the side area of the central tube is low, so that the pure water flow rate characteristic of the unit membrane area of the filter element is not extremely good, and the space is further improved.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a center tube and a filter core that has this center tube, this center tube inside manufacturability is higher, and the sectional area that catchments is great, can produce bigger pure water flow for original scheme.

A base pipe, comprising: the water inlet and the water outlet are respectively communicated with the water inlet and the water outlet; and the second half pipe is provided with a second water inlet, the second half pipe is arranged on the first half pipe, a second channel is formed between the second half pipe and the first half pipe, and the second channel is respectively communicated with the second water inlet and the second water outlet.

Further, be provided with the mounting groove on the periphery lateral wall of first half pipe, the second half pipe sets up in the mounting groove, treat first half pipe with the second half pipe equipment back, the outer wall of second half pipe with the periphery wall face of first half pipe is located the coplanar.

Further, after the first half pipe and the second half pipe are assembled, the first half pipe and the second half pipe form a cylindrical pipe body.

Furthermore, the mounting groove is provided with a first matching surface, a second matching surface and a third matching surface which are respectively arranged on two sides of the first matching surface, the second half pipe is provided with a fourth matching surface, a fifth matching surface and a sixth matching surface which are respectively arranged on two sides of the fourth matching surface, the fourth matching surface is opposite to the first matching surface, the fifth matching surface is opposite to the second matching surface, and the sixth matching surface is opposite to the third matching surface.

Furthermore, a jack is arranged on the second matching surface, a clamping piece is arranged on the third matching surface, a plug-in piece is arranged on the fifth matching surface, after the first half pipe and the second half pipe are assembled, the plug-in piece is inserted into the jack, the clamping piece abuts against the outer wall surface of the second half pipe, the second channel is defined by the first matching surface, the fourth matching surface and the third matching surface together, and the second channel is communicated with the second water outlet through the jack.

Furthermore, a clamping groove is formed in the outer wall surface of the second half pipe, the clamping piece is clamped in the clamping groove, and the clamping piece does not protrude out of the notch of the clamping groove.

Furthermore, a plurality of bulges are arranged on the first matching surface and distributed at intervals, when the first half pipe and the second half pipe are assembled, the part of the fourth matching surface is abutted against the bulges, a third water inlet is formed between the two adjacent bulges, and the third water inlet is communicated with the second channel.

Further, the first channel extends in an axial direction of the first half pipe.

Further, the second channel extends in the axial direction of the first half pipe, and the second channel extends in the length direction of the second half pipe.

Further, the mounting groove extends along the axial direction of the first half pipe, the plurality of protrusions are distributed along the axial direction of the first half pipe, the protrusions are arranged on two sides of the second channel, and the third water inlet is arranged on two sides of the second channel.

Further, the first water inlet is arranged on the outer peripheral wall of the first half pipe, the first water inlet is located on the peripheral side of the first channel, and the first water inlet is located at the first end of the first channel.

Further, the first water outlet is arranged on the end face of the first end of the first half pipe, and the first water outlet is located at the second end of the first channel.

Further, the second water outlet is arranged on the end face of the second end of the first half pipe, the second water outlet is located at the first end of the second channel, and the second end of the second channel is a closed end.

Further, the second water inlet is located on the peripheral side of the second channel.

Further, along the length direction of the second half pipe, a plurality of the second water inlets are arranged on the second half pipe in a spaced distribution mode.

Further, a check valve is arranged in the first channel, the check valve allows water to flow from the first water inlet to the first water outlet, and the check valve does not allow water to flow from the first water outlet to the first water inlet.

Furthermore, a joint is inserted at the second end of the first channel, the joint is provided with the first water outlet, and the joint is communicated with the first channel.

Further, a seal ring is disposed between the first passage and the joint.

And a sealing ring is arranged on the outer peripheral wall of the part of the joint, which protrudes out of the first channel.

Further, the second water outlet is formed in the end face of the second end of the first half pipe, and a sealing ring is arranged on the peripheral wall face of the second end of the first half pipe.

The filter element comprises a shell, the central tube and a reverse osmosis membrane, wherein the central tube is arranged in an inner cavity of the shell, and the reverse osmosis membrane is wound on the central tube.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic assembly of a base pipe according to an embodiment;

FIG. 2 is an enlarged view of the point A in FIG. 1;

FIG. 3 is an exploded schematic view from a first perspective of a base pipe according to an embodiment;

FIG. 4 is an exploded schematic view from a second perspective of the base pipe of the example;

FIG. 5 is an exploded schematic view from a third perspective of the base pipe of the example;

FIG. 6 is a cross-sectional view of a center tube according to an embodiment;

reference numerals:

1. a first half pipe; 11. a first channel; 12. a first water inlet; 13. a first water outlet; 14. a second water outlet; 15. mounting grooves; 151. a first mating surface; 152. a second mating surface; 153. a third mating surface; 154. a jack; 155. a fastener; 16. a protrusion; 17. a third water inlet; 18. a check valve; 19. a joint; 2. a second half pipe; 21. a second water inlet; 22. a second channel; 23. a fourth mating surface; 24. a fifth mating surface; 25. a sixth mating surface; 26. a plug-in; 27. a clamping groove.

Detailed Description

A central tube, see fig. 1-6, comprising a first half-tube 1, a second half-tube 2. Wherein, a first channel 11, a first water inlet 12, a first water outlet 13 and a second water outlet 14 are arranged on the first half pipe 1, and the first channel 11 is respectively communicated with the first water inlet 12 and the first water outlet 13. A second water inlet 21 is arranged on the second half pipe 2, the second half pipe 2 is arranged on the first half pipe 1, a second channel 22 is formed between the second half pipe 2 and the first half pipe 1, and the second channel 22 is respectively communicated with the second water inlet 21 and the second water outlet 14.

The diameter of the base pipe of this embodiment may be increased relative to the original solution, and the base pipe of this embodiment may be more manufacturable than the base pipe of the original solution with the same diameter. On the basis of this, the second water inlet 21 can be increased and increased, and the flow resistance of pure water can be reduced, so that the cross-sectional area of the central tube collecting water in this embodiment is increased, and therefore, the flow rate of pure water in the central tube in this embodiment is increased for the membrane element having the same membrane area.

In some embodiments, the first half pipe 1 has an approximately tubular overall shape, the second half pipe 2 has an approximately elongated tile shape overall shape, and the second half pipe 2 is installed on the outer circumferential side of the first half pipe 1. The first channel 11 extends in the axial direction of the first half pipe 1, and both ends of the first channel 11 are open ends. The second channel 22 extends along the axial direction of the first half pipe 1, the second channel 22 extends along the length direction of the second half pipe 2, the upper end of the second channel 22 is a closed end, and the lower end of the second channel 22 is an open end. The first water inlet 12 is arranged at the lower end of the outer peripheral wall of the first half pipe 1, the first water inlet 12 is positioned at the peripheral side of the first channel 11, and the first water inlet 12 is positioned at the lower end of the first channel 11 and communicated with the lower end. The first water outlet 13 is arranged on the end surface of the upper end of the first half pipe 1, and the first water outlet 13 is positioned at the upper end of the first channel 11 and communicated with the first channel. The second water outlet 14 is arranged on the end face of the lower end of the first half pipe 1, and the second water outlet 14 is positioned at the lower end of the second channel 22 and communicated with the lower end. The second water inlets 21 are located on the peripheral side of the second channel 22 and communicated with each other, and a plurality of the second water inlets 21 are arranged on the second half pipe 2 at intervals along the length direction of the second half pipe 2.

In some embodiments, a mounting groove 15 is provided on the outer peripheral side wall of the first half pipe 1, the mounting groove 15 extends along the axial direction of the first half pipe 1, the second half pipe 2 is provided in the mounting groove 15, after the first half pipe 1 and the second half pipe 2 are assembled, the outer wall surface of the second half pipe 2 is located on the same plane as the outer peripheral wall surface of the first half pipe 1, in this embodiment, the first half pipe 1 and the second half pipe 2 form a cylindrical pipe body, and besides, the pipe body may be in a polygonal cylindrical shape such as a rectangular parallelepiped shape. By adopting the design, the space can be fully utilized, and the structure is simplified.

Specifically, the mounting slot 15 has a first mating surface 151, a second mating surface 152, and a third mating surface 153, wherein the second mating surface 152 is located at a lower end of the first mating surface 151, and the third mating surface 153 is located at an upper end of the first mating surface 151. The second half pipe 2 has a fourth mating surface 23, a fifth mating surface 24, and a sixth mating surface 25, the fifth mating surface 24 is located at the lower end of the fourth mating surface 23, and the sixth mating surface 25 is located at the upper end of the fourth mating surface 23. The fourth mating surface 23 is opposite to the first mating surface 151, the fifth mating surface 24 is opposite to the second mating surface 152, and the sixth mating surface 25 is opposite to the third mating surface 153. The first engagement surface 151, the fourth engagement surface 23, and the third engagement surface 153 together form the second passage 22.

In order to fix the second half pipe 2 on the first half pipe 1, the second matching surface 152 is provided with a jack 154, the third matching surface 153 is provided with a clamping piece 155, the fifth matching surface 24 is provided with an insert 26, after the first half pipe 1 is assembled with the second half pipe 2, the insert 26 is inserted in the jack 154, the clamping piece 155 is abutted against the outer wall surface of the second half pipe 2, the first matching surface 151, the fourth matching surface 23 and the third matching surface 153 jointly define the second channel 22, and the second channel 22 is communicated with the second water outlet 14 through the jack 154.

In order to ensure that the first half pipe 1 and the second half pipe 2 are assembled into a cylinder, a clamping groove 27 is formed in the outer wall surface of the second half pipe 2, the clamping piece 155 is clamped in the clamping groove 27, and the clamping piece 155 does not protrude out of the notch of the clamping groove 27. By housing the seizing means 155 in the seizing groove 27, the seizing means 155 is prevented from protruding from the outer peripheral wall of the first half pipe 1 and the outer wall surface of the second half pipe 2.

More specifically, a plurality of protrusions 16 are arranged on the first matching surface 151, the plurality of protrusions 16 are distributed along the axial direction of the first half pipe 1, the protrusions 16 are arranged on both sides of the second channel 22, when the first half pipe 1 and the second half pipe 2 are assembled, the portion of the fourth matching surface 23 abuts against the protrusions 16, a third water inlet 17 is formed between two adjacent protrusions 16, and the third water inlet 17 is communicated with the second channel 22, so that a plurality of third water inlets 17 are arranged on both sides of the second channel 22. First half pipe 1, second half pipe 2 all are the working of plastics, through this design, can increase the fault-tolerant ability of working of plastics size, reduce to the required reliance of the precision of moulding plastics, utilize the clearance that produces simultaneously between first half pipe 1 and the second half pipe 2 to become the center tube and collect a part of pure water runner.

In some embodiments, a non-return valve 18 is arranged in the first channel 11, the non-return valve 18 allowing water to flow from the first water inlet 12 to the first water outlet 13, the non-return valve 18 not allowing water to flow from the first water outlet 13 to said first water inlet 12.

In some embodiments, a connector 19 is plugged at the second end of the first channel 11, the connector 19 having the first water outlet 13, the connector 19 being in communication with the first channel 11, the connector 19 being adapted to be inserted into an end cap of a housing of a cartridge. A seal ring is provided between the first passage 11 and the joint 19, a seal ring is provided on an outer peripheral wall of a portion of the joint 19 protruding out of the first passage 11, and a seal ring is provided on an outer peripheral wall surface of the second end of the first half pipe 1.

A filter element comprises a shell, the central tube and a reverse osmosis membrane. Wherein, the center tube is inserted in the inner cavity of the shell, and the reverse osmosis membrane is wound on the periphery side of the center tube. The specific structure of the filter element can refer to chinese patent No. CN202122690181.3, and is not described herein again.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A base pipe, comprising:

the water inlet pipe comprises a first half pipe (1), wherein a first channel (11), a first water inlet (12), a first water outlet (13) and a second water outlet (14) are arranged on the first half pipe (1), and the first channel (11) is respectively communicated with the first water inlet (12) and the first water outlet (13);

the second half pipe (2) is provided with a second water inlet (21) on the second half pipe (2), the second half pipe (2) is installed on the first half pipe (1), a second channel (22) is formed between the second half pipe (2) and the first half pipe (1), and the second channel (22) is communicated with the second water inlet (21) and the second water outlet (14) respectively.

2. The base pipe of claim 1, wherein: be provided with mounting groove (15) on the periphery lateral wall of first half pipe (1), second half pipe (2) set up in mounting groove (15), treat first half pipe (1) with second half pipe (2) equipment back, the outer wall surface of second half pipe (2) with the periphery wall surface of first half pipe (1) is located the coplanar.

3. The base pipe of claim 2, wherein: after the first half pipe (1) and the second half pipe (2) are assembled, the first half pipe (1) and the second half pipe (2) form a cylindrical pipe body.

4. The base pipe of claim 2, wherein: the mounting groove (15) is provided with a first matching surface (151), a second matching surface (152) and a third matching surface (153) which are arranged on two sides of the first matching surface (151) respectively, the second half pipe (2) is provided with a fourth matching surface (23), a fifth matching surface (24) and a sixth matching surface (25) which are arranged on two sides of the fourth matching surface (23) respectively, the fourth matching surface (23) is opposite to the first matching surface (151), the fifth matching surface (24) is opposite to the second matching surface (152), and the sixth matching surface (25) is opposite to the third matching surface (153).

5. The base pipe of claim 4, wherein: the second matching surface (152) is provided with a jack (154), the third matching surface (153) is provided with a clamping piece (155), the fifth matching surface (24) is provided with an insertion piece (26), after the first half pipe (1) and the second half pipe (2) are assembled, the insertion piece (26) is inserted into the jack (154), the clamping piece (155) abuts against the outer wall surface of the second half pipe (2), the first matching surface (151), the fourth matching surface (23) and the third matching surface (153) jointly define the second channel (22), and the second channel (22) is communicated with the second water outlet (14) through the jack (154).

6. The base pipe of claim 5, wherein: a clamping groove (27) is formed in the outer wall surface of the second half pipe (2), the clamping piece (155) is clamped in the clamping groove (27), and the clamping piece (155) does not protrude out of the notch of the clamping groove (27).

7. The base pipe of claim 4, wherein: a plurality of bulges (16) distributed at intervals are arranged on the first matching surface (151), when the first half pipe (1) and the second half pipe (2) are assembled, the part of the fourth matching surface (23) is abutted against the bulges (16), a third water inlet (17) is formed between two adjacent bulges (16), and the third water inlet (17) is communicated with the second channel (22).

8. The base pipe of claim 7, wherein:

the first channel (11) extends along the axial direction of the first half-pipe (1);

the second channel (22) extends along the axial direction of the first half-pipe (1), and the second channel (22) extends along the length direction of the second half-pipe (2);

the mounting groove (15) extends along the axial direction of the first half pipe (1), a plurality of protrusions (16) are distributed along the axial direction of the first half pipe (1), the protrusions (16) are arranged on two sides of the second channel (22), and the third water inlet (17) is arranged on two sides of the second channel (22);

the first water inlet (12) is arranged on the outer peripheral wall of the first half pipe (1), the first water inlet (12) is positioned on the peripheral side of the first channel (11), and the first water inlet (12) is positioned at the first end of the first channel (11);

the first water outlet (13) is arranged on the end face of the first end of the first half pipe (1), and the first water outlet (13) is positioned at the second end of the first channel (11);

the second water outlet (14) is arranged on the end face of the second end of the first half pipe (1), the second water outlet (14) is positioned at the first end of the second channel (22), and the second end of the second channel (22) is a closed end;

the second water inlet (21) is positioned on the peripheral side of the second channel (22);

along the length direction of the second half pipe (2), a plurality of second water inlets (21) are arranged on the second half pipe (2) in a spaced distribution mode.

9. The base pipe of claim 1, wherein:

a non-return valve (18) is arranged in the first channel (11), the non-return valve (18) allowing water to flow from the first water inlet (12) to the first water outlet (13), the non-return valve (18) not allowing water to flow from the first water outlet (13) to the first water inlet (12);

a joint (19) is inserted at the second end of the first channel (11), the joint (19) is provided with the first water outlet (13), and the joint (19) is communicated with the first channel (11);

a sealing ring is arranged between the first channel (11) and the joint (19);

a sealing ring is arranged on the outer peripheral wall of the part of the joint (19) protruding out of the first channel (11);

the second water outlet (14) is arranged on the end face of the second end of the first half pipe (1), and a sealing ring is arranged on the peripheral wall face of the second end of the first half pipe (1).

10. A filter cartridge, characterized in that: comprising a housing, a central tube according to any one of claims 1 to 9, the central tube being mounted in the inner cavity of the housing, a reverse osmosis membrane wound around the central tube.