CN212327954U

CN212327954U - Center rod of reverse osmosis membrane for preventing pure water from flowing back

Info

Publication number: CN212327954U
Application number: CN202021680796.7U
Authority: CN
Inventors: 张凤玲; 刘冲; 张晓龙; 刘炜
Original assignee: Hangzhou Haina Environmental Protection Technology Co ltd
Current assignee: Hangzhou Haina Environmental Protection Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-01-12
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a reverse osmosis membrane central rod for preventing pure water from flowing back, which comprises a rod body; the check valve component is arranged at one end of the rod body; the check valve assembly comprises a valve seat, a valve column is arranged on the valve seat, a sealing head is sleeved at the other end of the valve column, the rod body comprises a water outlet channel, the sealing head is located in the water outlet channel, a skirt edge extends towards the direction of the valve seat from the bottom of the sealing head, the skirt edge can be selectively abutted against the inner wall of the water outlet channel, and a pressure cavity is formed in the skirt edge. The utility model has the advantages that: the one-way valve subassembly sets up in well core rod, replaces the mode of traditional external check valve, has reduced the installation step of purifier and to the occupation in space, utilizes the shirt rim of sealed head and the characteristic of hugging closely with the play water channel inner wall when the pure water backward flow, blocks the pure water backward flow, avoids reverse osmosis membrane to produce the backpressure phenomenon.

Description

Center rod of reverse osmosis membrane for preventing pure water from flowing back

Technical Field

The utility model relates to a prevent central core rod of reverse osmosis membrane of pure water backward flow belongs to the purifier field.

Background

The prior water purifier needs to be provided with a check valve to prevent the pressure of the produced water side from being higher than that of the water inlet side when the water purifier is stopped, so that the backpressure phenomenon of a reverse osmosis membrane is caused, and the desalination rate is reduced, the check valve arranged on the prior water purifier is mainly characterized in that a check valve is connected to a pure water outlet through a PE pipe, the Chinese utility model with the publication number of CN204675907U discloses a reverse osmosis membrane or nanofiltration membrane water purifier without a concentrated water electromagnetic blow-down valve, which discloses that a purified water or purified water outlet channel is provided with at least 1 check valve and 0 or at least 1 open-hole current limiter or flow limiting valve or wastewater ratio, thereby playing the roles and the effects of opening and cutting off the traditional concentrated water, but the one-way valve in the utility model is a universal one-way valve, and the spring and the sealing structure in the one-way valve mainly play a role, when the check valve is installed, one more process is added, the occupied space is saved, and the cost of the water purifier is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent that pure water refluences in reverse osmosis membrane, through at the built-in check valve of well core rod, can effectively solve the problem that external check valve is with high costs.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

a reverse osmosis membrane center rod for preventing pure water from flowing back comprises a rod body; the check valve assembly is arranged at one end of the rod body; wherein, check valve subassembly includes the disk seat, be equipped with the valve column on the disk seat, another pot head of valve column is equipped with sealed head, the body of rod includes outlet channel, sealed head is located in the outlet channel, sealed head bottom to the disk seat direction extends has a shirt rim, the shirt rim can select with outlet channel inner wall butt, constitute a pressure chamber in the shirt rim, set up check valve subassembly and be connected with well core rod, utilize sealed head to stretch into well core rod's outlet channel, when the purifier during operation, pure water normally flows out, when the purifier shuts down, the pressure that flows back through the pure water makes the shirt rim of sealed head hug closely outlet channel inner wall, blocks that the pure water flows back to outlet channel in, replaces the form of traditional external check valve, has reduced the occupation space of check valve, has reduced the manufacturing cost of purifier.

Preferably, the head of the sealing head is hemispherical, and the diameter of the sealing head is smaller than that of the water outlet channel, so that pure water can conveniently pass through the gap between the sealing head and the water outlet channel.

Furthermore, the material of the sealing head is rubber or plastic, the sealing head has elasticity and can realize the function of blocking backflow, and the sealing head can be made of other materials with elasticity.

In order to increase the reliability of the attachment of the skirt edge and the inner wall of the water outlet channel during the backflow of the pure water, a circle of protruding part is arranged at the end part of the skirt edge.

Preferably, the head of the valve column is provided with a connecting block, and the valve column is connected with the sealing head through the connecting block.

Further, the connecting block is the hemisphere, and this structure can effectively provide the holding power for the connecting block, prevents that rubber from droing.

Preferably, the valve seat and the valve column are designed to be integrally formed, so that the connection reliability of the valve seat and the valve column is improved, the installation steps of the check valve assembly are reduced, and the cost is saved.

Further, the inner wall of disk seat is equipped with the joint groove, the outer wall of body of rod tip be equipped with the joint ring that the joint groove corresponds is connected through the joint, fixes one-way valve subassembly on the center tube, prevents effectively that one-way valve subassembly from droing in the use.

Furthermore, the bottom of the valve seat is provided with a water outlet hole, and pure water collected in the water outlet channel flows out through the water outlet hole.

Preferably, the rod body is provided with a water collecting hole, and the filtered pure water is collected into the water outlet channel of the central rod through the water collecting hole.

Compared with the prior art, the utility model has the advantages that:

the one-way valve subassembly sets up in well core rod, replaces the mode of traditional external check valve, has reduced the installation step of purifier and to the occupation in space, utilizes the shirt rim of sealed head and the characteristic of hugging closely with the play water channel inner wall when the pure water backward flow, blocks the pure water backward flow, avoids reverse osmosis membrane to produce the backpressure phenomenon.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

fig. 2 is a schematic partial cross-sectional view of the present invention;

fig. 3 is a schematic cross-sectional view of the middle sealing head of the present invention;

FIG. 4 is a schematic cross-sectional view of a valve seat according to the present invention;

FIG. 5 is an enlarged cross-sectional view of FIG. 2;

fig. 6 is a schematic cross-sectional view of a sealing head according to a second embodiment of the present invention;

fig. 7 is an enlarged cross-sectional view of fig. 2 according to a second embodiment of the present invention;

FIG. 8 is an enlarged detail view of A in FIG. 7;

in the figure:

10. a rod body; 11. a water collection hole; 12. a one-way valve assembly; 13. a valve seat; 14. a spool; 15. a sealing head; 16. a water outlet channel; 17. a skirt edge; 18. a pressure chamber; 19. connecting blocks; 20. a clamping groove; 21. a snap ring; 22. a water outlet hole; 23. a protrusion; 24. a sealing convex ring; 25. the annulus is concave.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-5, the embodiment of the central rod of the reverse osmosis membrane for preventing the backflow of pure water of the present invention includes a rod body 10, a plurality of water collecting holes 11 are formed on the rod body 10, and the pure water can be collected, a check valve assembly 12 is disposed at one end of the rod body 10, the check valve assembly 12 includes a valve seat 13, a valve post 14 is disposed on the valve seat 13, a sealing head 15 is sleeved at the other end of the valve post 14, the rod body 10 includes a water outlet channel 16, the sealing head 15 is disposed in the water outlet channel 16, the diameter of the sealing head 15 is smaller than that of the water outlet channel 16, a skirt 17 extends from the bottom of the sealing head 15 to the direction of the valve seat 13, the skirt 17 has elasticity and can selectively abut against the inner wall of the water outlet channel 16, a pressure cavity 18 is formed in the skirt 17, the head of the sealing head 15 is hemispherical, so as to reduce the friction force of the contact, The shape that can reduce frictional force such as arc more makes the pure water flow to between sealed head 15 and the well core rod inner wall more easily, and sealed head 15 adopts rubber, plastic or silica gel etc. to have elastic material, make full use of material characteristic. When the water purifier works, an external water source is pure water after being filtered by a reverse osmosis membrane, the pure water enters the water outlet channel 16 of the central rod through the water collecting hole 11, a gap is formed between the skirt edge 17 of the sealing head 15 and the inner wall of the water outlet channel 16 under the action of pressure water flow, and the pure water can flow out of the gap; when the purifier shut down, because the inertia of pressure rivers, can produce rivers shock wave, when the pure water backward flow to pressure chamber 18 in, rivers pressure makes the shirt rim 17 of sealed head 15 hug closely the 16 inner walls of exhalant canal, and pressure chamber 18 blocks the pure water backward flow, avoids appearing the water hammer effect in the exhalant canal 16 to arouse the diaphragm backpressure, influence purifier filter effect.

Referring to fig. 4-5, the head of the valve post 14 is provided with a connecting block 19, the connecting block 19 is hemispherical, when the valve post is installed, the connecting block 19 is pressed into the sealing head 15 by using the elasticity of the sealing head 15, when pure water flows back, the sealing head 15 can be effectively supported by the hemispherical structure of the connecting block 19, so as to prevent the sealing head 15 from falling off, the valve seat 13 and the valve post 14 are designed to be integrally formed, the integrally formed design can effectively save the installation steps of the valve seat 13 and the valve post 14, the reliability of the connection between the valve seat 13 and the valve post 14 is improved, the valve seat 13 and the valve post 14 can also be designed to be separately formed, and the valve seat 13 and the valve post 14 are connected together by clamping and buckling and the like.

Referring to fig. 4-5, the inner wall of the valve seat 13 is provided with a clamping groove 20, the outer wall of the end portion of the rod body 10 is provided with a clamping ring 21 corresponding to the clamping groove 20, the central rod and the check valve assembly 12 are fixed together, the use of an external check valve is avoided, the installation space is occupied, the bottom of the valve seat 13 is provided with a plurality of water outlets 22, and the water outlets 22 are arranged in a fan-shaped circumferential direction and can discharge pure water to the maximum extent.

The difference between this embodiment and the above embodiment is that, referring to fig. 6-7, a ring of protrusions 23 is provided at the end of the skirt 17 of the sealing head 15, and the protrusions 23 are provided to increase the reliability when the skirt 17 is tightly attached to the inner wall of the water outlet channel 16, and when pure water flows back, pure water in the pressure chamber 18 flows back again at the protrusions 23, so as to increase the pressure of the skirt 17 attached to the water outlet channel 16, and avoid the situation of tilting and the like that causes the pure water to flow back into the center rod.

Further, referring to fig. 6-8, an outward convex sealing convex ring 24 is arranged on the outer wall of the sealing head 15, a ring surface recess 25 matched with the sealing convex ring 24 is arranged on the inner wall of the water outlet channel 16, when the water purifier works, pure water can flow out from the space between the sealing head 15 and the water outlet channel 16 through water flow pressure, when the water purifier stops working, the sealing convex ring 24 is attached to the ring surface recess 25 through pure water backflow, on the basis that the skirt 17 is attached to the inner wall of the water outlet channel 16, the sealing performance is increased again, and the blocking effect of the pure water backflow is improved.

The above description is only for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides a prevent central pole of reverse osmosis membrane of pure water backward flow which characterized in that: comprises that

A rod body;

the check valve assembly is arranged at one end of the rod body;

the check valve assembly comprises a valve seat, a valve column is arranged on the valve seat, a sealing head is sleeved at the other end of the valve column, the rod body comprises a water outlet channel, the sealing head is located in the water outlet channel, a skirt edge extends towards the valve seat from the bottom of the sealing head, the skirt edge can be selectively abutted against the inner wall of the water outlet channel, and a pressure cavity is formed in the skirt edge.

2. The waveguide of claim 1, wherein: the head of the sealing head is hemispherical, and the diameter of the sealing head is smaller than that of the water outlet channel.

3. The waveguide of claim 2, wherein: the sealing head is made of rubber or plastic.

4. A center rod as claimed in claim 1 or 2, wherein: the end part of the skirt edge is provided with a circle of protruding part.

5. The waveguide of claim 1, wherein: the head of the valve column is provided with a connecting block, and the valve column is connected with the sealing head through the connecting block.

6. The waveguide of claim 5, wherein: the connecting block is hemispherical.

7. The waveguide of claim 1, wherein: the valve seat and the valve column are designed to be integrally formed.

8. The center rod of claim 1 or 7, wherein: the inner wall of the valve seat is provided with a clamping groove, and the outer wall of the end part of the rod body is provided with a clamping ring corresponding to the clamping groove.

9. The waveguide of claim 8, wherein: and a water outlet hole is formed in the bottom of the valve seat.

10. The waveguide of claim 1, wherein: and a water collecting hole is formed in the rod body.