Water filtering filter element

Abstract

The utility model provides a water filtering filter element, which belongs to the field of filter elements and comprises a central pipe, a filter membrane is wound outside the central pipe, and a glass fiber reinforced plastic shell is wrapped outside the filter membrane; a sealing block is fixedly connected into the central pipe, and a plurality of water inlet holes located below the sealing block are formed in the central pipe in a penetrating mode. The two ends of the central pipe are located outside the filtering membranes, the outer portion of the central pipe is in threaded connection with two fixing caps, a plurality of water passing openings opposite to the filtering membranes are formed in the fixing caps in a penetrating mode, and pressing rings are fixed to the outer walls of the fixing caps and arranged outside the glass fiber reinforced plastic shell in a sleeving mode. The glass fiber reinforced plastic shell is sleeved with the pressing ring, so that the filtering film can be protected and prevented from being extruded, meanwhile, the filtering film can be limited, the stability of the filtering film after winding is further improved, meanwhile, the stability of connection between the fixing cap and the center pipe can be guaranteed, and the connection mode is simple.

Description

Technical Field

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

[0002] The filter element is a purification device used to purify water resources so that they can be reused. It has filter material inside. The filter material's super filtering ability and pollution-holding capacity can effectively improve water purification efficiency.

[0003] At present, the filter element formed by winding the filter membrane rarely has protective components at its ends. When the pressure-bearing capacity of the edge of the filter element is relatively weak compared to the pressure-bearing capacity of the middle position, the end of the filter element may be squeezed and deformed during production and transportation, affecting the water inlet and outlet effects of the filter element. For this reason, the present application proposes a water filter element. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a water filter element.

[0005] The embodiment of the present utility model provides a water filter element, comprising:

[0006] A central tube, wherein a filter membrane is wound around the outside of the central tube, and the outside of the filter membrane is wrapped with a glass fiber reinforced plastic shell; a sealing block is fixedly connected to the inside of the central tube, and a plurality of water inlet holes are penetrated through the central tube and located below the sealing block;

[0007] Both ends of the central tube are arranged outside the filter membrane. The external thread of the central tube is connected to two fixing caps. The fixing caps are penetrated by a plurality of water openings opposite to the filter membrane. The outer wall of the fixing cap is fixed with a pressure ring, and the pressure ring is set on the outside of the fiberglass shell.

[0008] Furthermore, the sealing block is arranged close to one end of the central tube.

[0009] Furthermore, the pressure ring and the fixing cap are integrally injection-molded.

[0010] Furthermore, a through hole is provided through the middle of the fixing cap, an inner wall of the through hole is provided with an internal thread, an outer wall of the central tube is provided with an external thread, and the internal thread is meshed with the external thread.

[0011] Furthermore, the water openings are distributed in a circular array on the fixing cap.

[0012] Furthermore, the filter membrane includes a reverse osmosis membrane, a flow channel cloth, and a concentrated water grid. The reverse osmosis membrane is three-layered, and the flow channel cloth, the concentrated water grid and the three-layer reverse osmosis membrane are staggered.

[0013] Furthermore, an annular groove is provided on the outer wall of the fixing cap, and a sealing ring is installed in the annular groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model is set on the outside of the fiberglass shell through a pressure ring sleeve, which can protect the filter membrane and prevent it from being squeezed. At the same time, the filter membrane can be limited to further increase its stability after winding. At the same time, it can also ensure the stability of the connection between the fixed cap and the central tube and the connection method is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a water filter element described in Example 1 of the present utility model.

[0017] Figure 2 This is a schematic diagram of a fixing cap in a water filter element described in Example 1 of the present utility model.

[0018] Figure 3 This is a structural schematic diagram of a central tube in a water filter element described in Example 1 of the present utility model.

[0019] Figure 4 This is a cross-sectional view of the central tube in a water filter element described in Example 1 of the present utility model.

[0020] Figure 5 This is a structural schematic diagram of a water filter element described in Example 2 of the present utility model.

[0021] In the above drawings: 1 fiberglass shell, 2 center tube, 3 fixing cap, 4 filter membrane, 5 water outlet, 6 water inlet, 7 sealing block, 8 pressure ring, 9 annular groove, 10 sealing ring. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] like Figures 1-4 As shown, the embodiment of the present utility model provides a water filter element, comprising:

[0025] The central tube 2 has a filter membrane 4 wrapped around its exterior. The filter membrane 4 includes a reverse osmosis membrane, a flow channel cloth, and a concentrated water grid. The reverse osmosis membrane is three-layered. The flow channel cloth, the concentrated water grid, and the three-layer reverse osmosis membrane are staggered. The reverse osmosis membrane is located in the innermost and outermost layers, and can filter water by osmosis.

[0026] The outside of the filter membrane 4 is wrapped with a glass fiber reinforced plastic shell 1; a sealing block 7 is fixedly connected to the center tube 2, and the sealing block 7 is arranged near one end of the center tube 2. The center tube 2 is penetrated by a plurality of water inlet holes 6 located below the sealing block 7.

[0027] Both ends of the central tube 2 are located outside the filter membrane 4. The external threads of the central tube 2 are connected to two fixing caps 3. A through hole is provided in the middle of the fixing cap 3. The inner wall of the through hole is provided with an internal thread. The outer wall of the central tube 2 is provided with an external thread, and the internal thread is engaged with the external thread.

[0028] The fixing cap 3 is penetrated by a plurality of water openings 5 opposite to the filter membrane 4. The water openings 5 are distributed in a circular array on the fixing cap 3. A pressure ring 8 is fixed to the outer wall of the fixing cap 3. The pressure ring 8 and the fixing cap 3 are integrally injection-molded. The pressure ring 8 is set on the outside of the fiberglass shell 1, so that the filter membrane 4 can be protected to prevent it from being squeezed. At the same time, the filter membrane 4 can be limited to further increase its stability after winding.

[0029] Water enters the wound filter membrane 4 through the water inlet 5 at the upper end, flows to the central tube 2 after osmotic filtration of the filter membrane 4, and finally enters the central tube 2 through the water inlet 6 and is discharged as pure water; concentrated water is discharged through the filter membrane 4, and the two parts are discharged separately.

[0030] Example 2

[0031] Reference Figure 5 , the difference between this embodiment and embodiment 1 is that, in this embodiment, the outer wall of the fixing cap 3 is provided with an annular groove 9, and a sealing ring 10 is installed in the annular groove 9;

[0032] During actual use, the present invention needs to be installed in the filter cartridge, and the sealing between the present invention and the filter cartridge needs to be ensured; for this purpose, an annular groove 9 is provided on the outer wall of the fixing cap 3 during injection molding production, and the annular groove 9 is used to install the sealing ring 10. When the present invention is installed in the filter cartridge, the sealing rings 10 at both ends are against the inner wall of the filter cartridge, thereby achieving a double seal to prevent water from flowing out from between the filter cartridge and the filter cartridge; at the same time, it also avoids the cumbersome steps of the prior art in which an additional sealing ring 10 is provided on the filter cartridge and fixed with tape, making the subsequent installation of the filter cartridge more convenient.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water filter element, characterized in that: include: A central tube (2), wherein a filter membrane (4) is wound around the outside of the central tube (2), and the outside of the filter membrane (4) is wrapped with a glass fiber reinforced plastic shell (1); a sealing block (7) is fixedly connected to the inside of the central tube (2), and a plurality of water inlet holes (6) located below the sealing block (7) are provided through the central tube (2); Both ends of the central tube (2) are arranged outside the filter membrane (4), and the external thread of the central tube (2) is connected to two fixing caps (3), and the fixing caps (3) are penetrated by a plurality of water openings (5) opposite to the filter membrane (4), and the outer wall of the fixing cap (3) is fixed with a pressure ring (8), and the pressure ring (8) is set on the outside of the glass fiber reinforced plastic shell (1).

2. A water filter element according to claim 1, characterized in that: in: The sealing block (7) is arranged close to one end of the central tube (2).

3. A water filter element according to claim 1, characterized in that: in: The pressure ring (8) and the fixing cap (3) are integrally injection-molded.

4. A water filter element according to claim 1, characterized in that: in: A through hole is provided in the middle of the fixing cap (3), an inner wall of the through hole is provided with an internal thread, and an outer wall of the central tube (2) is provided with an external thread, and the internal thread is engaged with the external thread.

5. The water filter element according to claim 1, characterized in that: in: The water openings (5) are distributed in a ring array on the fixing cap (3).

6. A water filter element according to claim 1, characterized in that: in: The filter membrane (4) comprises a reverse osmosis membrane, a flow channel cloth, and a concentrated water grid. The reverse osmosis membrane is three-layered, and the flow channel cloth, the concentrated water grid and the three-layer reverse osmosis membrane are staggered.

7. The water filter element according to claim 1, characterized in that: in: An annular groove (9) is provided on the outer wall of the fixing cap (3), and a sealing ring (10) is installed in the annular groove (9).

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