Reverse osmosis water purification filter element

Abstract

The utility model relates to the technical field of water purification treatment devices, in particular to a reverse osmosis water purification filter element which comprises an element cylinder, a water outlet pipe is coaxially arranged in the element cylinder, an RO membrane is wound on the outer side of the water outlet pipe, a connecting sleeve is in threaded connection with the water inlet end of the element cylinder, and a partition plate is fixed in the middle in the connecting sleeve. A plurality of flow guide holes for water flow to pass through are formed in the surface of the partition plate; the other end of the connecting sleeve is in threaded connection with an end cover, an annular groove is formed in the bottom in the end cover, a water inlet connector is fixed to the end face of the end cover, the water inlet connector is communicated with the annular groove through a water guide flow channel formed in the end cover, and an annular filter screen is detachably fixed to the surface of the annular groove; the sleeve and the end cover are designed in a separated mode, only the end cover needs to be unscrewed regularly, the annular filter screen needs to be disassembled, the annular filter screen and the interior of the annular groove need to be cleaned, the RO membrane and the water outlet pipe do not need to be disassembled, maintenance time is shortened, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification devices, in particular to a reverse osmosis water purification filter element. Background Art

[0002] Reverse osmosis filter element, also called RO membrane filter element. RO membrane has extremely high pore size selectivity and can effectively remove ions, organic matter, bacteria, viruses and other particulate matter in water. In practical applications, large particles in dirty water to be treated will greatly reduce the service life of the RO membrane filter element. Pre-treatment filtration can reduce the content of particulate matter in the water and effectively reduce the workload of the RO membrane. Regular disassembly, cleaning or replacement can effectively increase the service life of the RO membrane. However, the existing water purification filter element needs to be completely disassembled and cleaned, which is more troublesome. Based on this, the present application proposes a reverse osmosis water purification filter element to increase the service life of the RO membrane. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The utility model aims to provide a reverse osmosis water purification filter element, which is easy to quickly disassemble and clean and prolongs the service life of the RO membrane.

[0005] 2. Technical Solution

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model proposes a reverse osmosis water purification filter element, comprising a core barrel, a water outlet pipe is coaxially arranged in the core barrel, an RO membrane is wound on the outer side of the water outlet pipe, a sewage joint connected with the interior of the core barrel is arranged on the outer wall of the core barrel, a connecting sleeve is threadedly connected to the water inlet end of the core barrel, a partition plate is fixed in the middle of the connecting sleeve, and a plurality of guide holes for water flow to pass through are opened on the surface of the partition plate; an end cover is threadedly connected to the other end of the connecting sleeve, an annular groove is opened in the bottom of the end cover, an inlet joint is fixed on the end surface of the end cover, the inlet joint is connected with the annular groove through a water guide channel arranged in the end cover, and an annular filter is detachably fixed on the surface of the annular groove.

[0008] Furthermore, the water outlet end of the core tube is threadedly connected to a tail cover, a connecting pipe is fixed to the surface of the tail cover, the lower end of the water outlet pipe passes through the connecting pipe and extends to the outside of the tail cover and is threadedly connected to a locking nut, and the two ends of the RO membrane are respectively in contact with the partition plate and the end surface of the connecting pipe at one end inside the core tube.

[0009] Furthermore, a plug hole is provided in the middle of the partition plate, and the water outlet pipe is located at one end of the core tube and is plug-in connected to the plug hole.

[0010] Furthermore, a guide groove is provided on the inner wall of the insertion hole along the axial direction, and a convex ridge is provided on the outer wall of one end of the water outlet pipe located in the core tube, and the convex ridge is slidably connected to the guide groove.

[0011] Furthermore, a limit stop ring is provided on the outer wall of one end of the water outlet pipe located in the core tube, and the limit stop ring is separated between the inner surface of the end cover and the RO membrane.

[0012] 3. Beneficial Effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model introduces the water to be treated through a pipe connected to the water inlet joint, and the water to be treated enters the annular groove through the water guide channel. The annular filter screen performs preliminary filtration on the particulate impurities in the water to be treated, thereby improving the cleanliness of the water to be treated. The water after preliminary filtration enters the core tube through the guide hole and is filtered by the RO membrane, thereby increasing the service life of the RO membrane.

[0015] The casing and end cap are designed to be separated. You only need to regularly unscrew the end cap, remove the annular filter, and clean the annular filter and the inside of the annular groove. There is no need to remove the RO membrane and the outlet pipe, which shortens maintenance time and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0017] Figure 2 It is a middle cross-sectional view of the utility model;

[0018] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0019] Figure 4 It is a schematic diagram of the structure of the end cover;

[0020] Figure 5 It is a schematic diagram of the structure of the casing;

[0021] Figure 6 This is the connection diagram of the outlet pipe and the RO membrane;

[0022] 1. Core tube; 2. Outlet pipe; 2.1. Ridge; 2.2. Limiting ring; 3. RO membrane; 4. Sewage joint; 5. Casing; 6. Partition plate; 6.1. Diversion hole; 6.2. Plug hole; 6.3. Guide groove; 7. End cover; 7.1. Water guide channel; 7.2. Annular groove; 8. Water inlet joint; 9. Annular filter; 10. Tail cover; 11. Connecting pipe; 12. Locking nut. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Embodiment 1:

[0025] A reverse osmosis water filter element, see Figure 1-6 , including a core barrel 1, a water outlet pipe 2 is coaxially arranged inside the core barrel 1, an RO membrane 3 is wound on the outside of the water outlet pipe 2, a sewage joint 4 connected to the inside of the core barrel 1 is arranged on the outer wall of the core barrel 1, after the water to be treated is filtered by the RO membrane 3, the clean water is discharged from the water outlet pipe 2, and the sewage is discharged from the pipe connected to the sewage joint 4.

[0026] A connecting sleeve 5 is threadedly connected to one water inlet end of the core tube 1, a partition plate 6 is fixed in the middle of the connecting sleeve 5, a plurality of guide holes 6.1 are provided on the surface of the partition plate 6, an end cover 7 is threadedly connected to the other end of the connecting sleeve 5, an annular groove 7.2 is provided in the bottom of the end cover 7, an inlet joint 8 is fixed on the end surface of the end cover 7, the inlet joint 8 is connected with the annular groove 7.2 through a water guide channel 7.1 provided in the end cover 7, an annular filter screen 9 is fixed on the surface of the annular groove 7.2 by a detachable fixing method such as a buckle or a bolt, the annular filter screen 9 realizes preliminary impurity removal of the water to be treated, and in addition, the annular groove 7.2 can be filled with filter materials such as fine sand, and the filter materials are sealed in the annular groove 7.2 by the annular filter screen 9 to realize preliminary filtration.

[0027] Working principle: The water to be treated is introduced through a pipe connected to the water inlet joint 8, and the water to be treated enters the annular groove 7.2 through the water guide channel 7.1. The annular filter 9 performs preliminary filtration on the particulate impurities in the water to be treated. The water after preliminary filtration enters the core tube 1 through the guide hole 6.1 and is filtered through the RO membrane 3. The clean water is discharged from the outlet pipe 2, and the sewage is discharged from the connecting pipe at the sewage joint 4. After the annular filter 9 preliminarily filters the water to be treated, the cleanliness of the water to be treated is improved, and the service life of the RO membrane 3 is increased. In this embodiment, the sleeve 5 and the end cover 7 adopt a separate design. It is only necessary to regularly unscrew the end cover 7, disassemble the annular filter 9, and clean the annular filter 9 and the inside of the annular groove 7.2. There is no need to disassemble both the RO membrane 3 and the outlet pipe 2, which shortens the maintenance time and reduces the cost.

[0028] Embodiment 2:

[0029] On the basis of the above-mentioned embodiment, in this embodiment, the RO membrane 3 in the cartridge 1 is also detachable.

[0030] The outlet end of the core tube 1 is threadedly connected with a tail cap 10, a connecting pipe 11 is fixed on the surface of the tail cap 10, the lower end of the outlet pipe 2 passes through the connecting pipe 11 and extends to the outside of the tail cap 10, and is threadedly connected with a locking nut 12, the two ends of the RO membrane 3 are respectively against the end surface of the partition plate 6 and the connecting pipe 11 located at one end of the core tube 1, the middle of the partition plate 6 is provided with a plug hole 6.2, the outlet pipe 2 is located at one end of the core tube 1 and is plug-in connected with the plug hole 6.2. The tail cap 10 and the locking nut 12 are detachable. After installation, the RO membrane 3 is stabilized between the partition plate 6 and the connecting pipe 11, and the outlet pipe 2 is inserted into the plug hole 6.2 and is fastened between the partition plate 6 and the locking nut 12.

[0031] In addition, a guide groove 6.3 is provided in the axial direction on the inner wall of the jack 6.2, and a ridge 2.1 is provided on the outer wall of one end of the water outlet pipe 2 located in the core barrel 1, and the ridge 2.1 is slidably connected with the guide groove 6.3. The assembly efficiency and installation accuracy of the water outlet pipe 2 are improved through the matching connection of the ridge 2.1 and the guide groove 6.3, and at the same time, the rotation of the water outlet pipe 2 is limited to ensure its stability. A limit retaining ring 2.2 is provided on the outer wall of one end of the water outlet pipe 2 located in the core barrel 1, and the limit retaining ring 2.2 is separated between the inner surface of the end cover 7 and the RO membrane 3, and the limit retaining ring 2.2 further improves the stability of the RO membrane 3 and the water outlet pipe 2 during installation.

[0032] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A reverse osmosis water purification filter element, comprising a core barrel, a water outlet pipe is coaxially arranged in the core barrel, an RO membrane is wound around the outer side of the water outlet pipe, and a sewage joint communicating with the inner part of the core barrel is arranged on the outer wall of the core barrel, characterized in that: A connecting sleeve is threadedly connected to one water inlet end of the core tube, a partition plate is fixed in the middle of the connecting sleeve, and a plurality of guide holes for water to flow through are provided on the surface of the partition plate; an end cover is threadedly connected to the other end of the connecting sleeve, an annular groove is provided at the bottom of the end cover, a water inlet joint is fixed on the end surface of the end cover, the water inlet joint is connected to the annular groove through a water guide channel arranged in the end cover, and an annular filter is detachably fixed on the surface of the annular groove.

2. A reverse osmosis water purification filter element according to claim 1, characterized in that: The water outlet end of the core tube is threadedly connected to a tail cover, a connecting pipe is fixed to the surface of the tail cover, the lower end of the water outlet pipe passes through the connecting pipe and extends to the outside of the tail cover and is threadedly connected to a locking nut, and the two ends of the RO membrane are respectively in contact with the partition plate and the end surface of the connecting pipe located at one end of the core tube.

3. A reverse osmosis water purification filter element according to claim 1, characterized in that: A plug hole is provided in the middle of the partition plate, and the water outlet pipe is located at one end of the core tube and is plug-in connected to the plug hole.

4. A reverse osmosis water purification filter element according to claim 3, characterized in that: A guide groove is provided on the inner wall of the insertion hole along the axial direction, and a convex ridge is provided on the outer wall of one end of the water outlet pipe located in the core tube, and the convex ridge is slidably connected with the guide groove.

5. A reverse osmosis water purification filter element according to claim 1, characterized in that: A limit stop ring is arranged on the outer wall of one end of the water outlet pipe located in the core tube, and the limit stop ring is separated between the inner surface of the end cover and the RO membrane.

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