An integrated filter

Abstract

The utility model discloses an integrated filter, including shell and filter core, filter core is coaxial with shell and is equipped with annular cavity between filter core outside and shell inner wall, and one end of filter core is equipped with water production mouth, and the both ends of shell are equipped with upper end cover and lower end cover respectively, and the inboard end face of upper end cover and lower end cover is equipped with the inner support of circumference distribution, is equipped with water inlet on lower end cover, is equipped with water outlet on upper end cover and water outlet communicates with water production mouth, and is equipped with the exhaust hole of communicating with annular cavity on upper end cover, the utility model discloses filter core and shell adopt the integrated structure of not needing to dismantle, and the better sealing, can bear greater pressure, and liquid can be evenly distributed on filter core outside after flowing into filter, can differentiate pressure protection filter core and dispersed liquid flow and improve filtration efficiency, can reverse flush after long -time use, need not to replace filter core, prolongs the service life of filter.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to an integrated filter. Background Technology

[0002] Filters are commonly used filtration units in water purification equipment. Filter media (filter cartridges) include melt-blown polypropylene, composite non-woven fabric, and activated carbon. These media intercept or adsorb substances such as sediment, suspended solids, odors, and organic matter in the water. Once saturated, they must be replaced. Filter cartridges are consumables and cannot be used alone; they must be installed inside the filter during use.

[0003] Common filters consist of a housing and a fixed cover. Materials include polypropylene, UPVC, stainless steel, and fiberglass. The housing is connected to the fixed cover by threads, clamps, or flanges. When replacing the filter element, the fixed cover needs to be removed to take out the filter element.

[0004] Chinese patent application CN202310167611.4 discloses an integrated spiral-wound separation membrane element, including a housing, a membrane core, and two end caps. The housing and end caps are fixedly and sealed together. The end caps include a cover plate and a ring. The cover plate is provided with a first interface and a second interface. A first end face support piece is provided between the end of the ring near the membrane core and the second interface, which separates the annular channel between the ring and the second interface. The first end face support piece divides the first interface into two openings that communicate with the portions of the annular channel located on both sides of the first end face support piece. A second end face support piece and a third end face support piece are provided in the annular channel, which are spaced apart. Neither the second end face support piece nor the third end face support piece separates the annular channel.

[0005] Chinese patent application CN202422384552.9 discloses a high-efficiency whole-house water purifier filter cartridge, including a fixed cover and a filter assembly. The filter assembly is disposed inside the fixed cover and includes a filter barrel that is movably fitted inside the fixed cover. A threaded groove is formed on the side surface of the filter barrel. A filter protective sleeve is movably connected inside the filter barrel. Two connecting straps are fixedly connected to the outer side of the filter protective sleeve, and the two connecting straps are symmetrically distributed. When using this device, the installed filter protective sleeve and activated carbon pleated filter cartridge can filter the water source. Utilizing the adsorption properties of activated carbon, it can better remove residual chlorine from tap water, effectively reducing impurities in the water source. Simultaneously, the filter protective sleeve and activated carbon pleated filter cartridge can be repeatedly cleaned, making it more durable, energy-efficient, and cost-effective, further improving the water purification effect.

[0006] The shortcomings of existing products are: 1. The filter structure is complex, and the filter element replacement process requires specialized personnel for maintenance; 2. Sufficient pressure needs to be maintained during filter operation, and the housing and fixing cover are usually sealed with sealing rings or sealing plates, which poses a risk of leakage; 3. There is no unified standard for filter structure, and it cannot be quickly expanded. Therefore, this application proposes an integrated filter to solve the above problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an integrated filter.

[0008] To solve the above-mentioned technical problems, the present invention includes a shell and a filter element. The filter element is coaxially arranged with the shell and an annular cavity is provided between the outer side of the filter element and the inner wall of the shell. One end of the filter element is provided with a water outlet. The two ends of the shell are respectively provided with an upper end cover and a lower end cover. The inner end faces of the upper end cover and the lower end cover are provided with circumferentially distributed inner supports. The lower end cover is provided with a water inlet, and the upper end cover is provided with a water outlet that communicates with the water outlet. The upper end cover is provided with an exhaust hole that communicates with the annular cavity.

[0009] Preferably, the filter element is a pleated filter element or an activated carbon filter element.

[0010] Preferably, the filter element includes an outer frame and an inner frame arranged coaxially, with a filter material layer between the outer frame and the inner frame, and a lower cover and an upper cover fixedly connected to the upper end of the outer frame, with the water outlet located on the upper cover.

[0011] Preferably, the upper cover is provided with a water outlet head coaxial with the water outlet, and the water outlet head is inserted into the water inlet end of the upper cover.

[0012] Preferably, the inner supports on the upper and lower end covers are respectively fitted and abutted against the outer end faces of the upper and lower end covers.

[0013] Preferably, the water outlet end and the water inlet end are respectively located on the side of the upper end cover and the lower end cover.

[0014] Preferably, both the upper and lower end caps have U-shaped grooves on the sidewalls facing away from the filter element.

[0015] Preferably, the upper end cover and the lower end cover are provided with circumferentially distributed reinforcing ribs on the end face away from the filter element.

[0016] Preferably, the vent hole of the upper end cover is provided with internal threads for installing an vent valve.

[0017] The beneficial effects of this utility model are as follows: This utility model adopts an integrated structure of filter element and shell without disassembly, with simple internal structure, no need for additional sealing structure, better sealing performance, and the ability to withstand greater pressure. The uniform external size and interface allow for the expansion of water supply by connecting multiple filters in parallel according to the difference in water consumption. After the liquid flows into the filter, it can be evenly distributed on the outside of the filter element, which can differentiate pressure to protect the filter element and disperse liquid flow to improve filtration efficiency. After long-term use, it can be backwashed without replacing the filter element, thus extending the service life of the filter. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 for Figure 2 Schematic diagram of the AA section; Figure 4 This is a three-dimensional schematic diagram of the filter element structure in this utility model; Figure 5 This is a schematic cross-sectional view of the filter element structure in this utility model; Figure 6 This is a schematic diagram of the upper end cover in this utility model; Figure 7 This is a three-dimensional schematic diagram of the lower end cover of this utility model.

[0019] In the diagram: 1. Outer shell; 2. Filter element; 21. Outer frame; 22. Inner frame; 23. Filter material layer; 24. Lower cover; 25. Upper cover; 26. Water outlet; 27. Water outlet pipe head; 3. Annular cavity; 4. Upper end cover; 5. Lower end cover; 6. Internal support; 7. Water inlet; 8. Water outlet; 9. Vent hole; 10. U-shaped groove; 11. Reinforcing rib. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All directional indicators (such as up, down, left, right, front, back, etc.) in the present utility model are only used to explain the relative positional relationship and movement of each component in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicator will also change accordingly.

[0021] like Figures 1-7As shown, this embodiment provides an integrated filter, including a housing 1 and a filter element 2. The filter element 2 is coaxially arranged with the housing 1, and an annular cavity 3 is provided between the outer side of the filter element 2 and the inner wall of the housing 1. One end of the filter element 2 is provided with a water outlet 26. The two ends of the housing 1 are respectively provided with an upper end cover 4 and a lower end cover 5. The housing 1, the upper end cover 4, and the lower end cover 5 are made of high-strength plastics or engineering plastics, such as polypropylene, polyvinylidene fluoride, polyvinyl chloride, acrylonitrile-butadiene-styrene plastic, etc. The filter element 2, the housing 1, the upper end cover 4, and the lower end cover 5 form an integrated structure. The inner end faces of the upper end cover 4 and the lower end cover 5 are provided with circumferentially distributed inner supports 6. The upper end cover 4 and the lower end cover 5 are sleeved on both ends of the housing 1 and fixedly connected to the housing 1. A water inlet 7 is provided on the lower end cover 5, and the upper end cover 5 is provided with a water outlet 7. The upper end cover 4 is provided with an outlet 8, which is connected to the water outlet 26. The liquid to be filtered enters the annular cavity 3 from the inlet 7, and after being filtered by the filter element 2, it enters the interior of the filter element 2 and is discharged from the water outlet 26 through the outlet 8. When cleaning the filter element 2, the cleaning water enters the interior of the filter element 2 from the outlet 8 through the water outlet 26 and flows into the annular cavity 3 from all sides of the filter element 2, thereby cleaning the filter element 2. The wastewater after cleaning is discharged from the inlet 7. In order to avoid excessive internal pressure affecting the cleaning efficiency during cleaning, the upper end cover 4 is provided with an exhaust hole 9 connected to the annular cavity 3. The exhaust hole 9 is used to connect the interior of the filter with the outside atmosphere. During backwashing, the exhaust hole 9 can be opened so that the wastewater can be discharged smoothly from the inlet 7.

[0022] like Figure 4 , Figure 5 As shown, in this embodiment, the filter element 2 is a pleated filter element or an activated carbon filter element. Specifically, the filter element 2 includes an outer frame 21 and an inner frame 22 arranged coaxially. A filter material layer 23 is provided between the outer frame 21 and the inner frame 22. The upper end of the outer frame 21 is fixedly connected to a lower cover 24 and an upper cover 25, respectively. The lower cover 24 and the upper cover 25 are respectively bonded and fixed to the upper end and the lower end of the outer frame 21 and the inner frame 22. The water outlet 26 is provided on the upper cover 25. The filter material layer 23 is wrapped around the outside of the inner frame 22, forming a central cavity inside the inner frame 22. An annular cavity 3 is formed between the outer frame 21 and the outer shell 1. After being filtered by the filter material layer 23, the liquid enters the central cavity of the inner frame 22 and is discharged from the water outlet 26. Furthermore, the upper cover 25 is provided with a water outlet 27 coaxial with the water outlet 26. The water outlet 27 is inserted into the water inlet of the water outlet 8 of the upper cover 4. The water outlet 27 is bonded and fixed to the upper cover 4, which can prevent water leakage while positioning.

[0023] like Figure 6 , Figure 7As shown, furthermore, the inner supports 6 on the upper end cover 4 and the lower end cover 5 are respectively attached to the outer end faces of the upper cover 25 and the lower cover 24, so that the upper cover 25 and the lower cover 24 have gaps with both ends of the filter element 2, which facilitates the liquid to enter the annular cavity 3 during filtration, so that the liquid can be evenly distributed on the outside of the filter element 2 after flowing into the filter, which can differentiate the pressure protection of the filter element 2 and disperse the liquid flow to improve the filtration efficiency.

[0024] like Figure 1 , Figure 6 As shown, the outlet end of the water outlet 8 and the inlet end of the water inlet 7 are respectively located on the sides of the upper end cover 4 and the lower end cover 5, allowing the filter to be installed upright, thus improving the adaptability of the filter installation. Furthermore, U-shaped grooves 10 are provided on the side walls of the upper end cover 4 and the lower end cover 5 away from the filter element 2, which facilitates the fixing of the filter. At the same time, circumferentially distributed reinforcing ribs 11 are provided on the end faces of the upper end cover 4 and the lower end cover 5 away from the filter element 2, thereby improving the strength of the upper end cover 4 and the lower end cover 5.

[0025] like Figure 6 As shown, the vent hole 9 of the upper end cover 4 is provided with internal threads for installing an vent valve. This vent hole 9 serves as a through hole connecting the inside and outside of the filter. It can be connected to an vent valve, a pressure gauge to monitor the internal pressure of the filter in real time, or a safety valve to release pressure when the filter pressure is too high. Alternatively, it can be installed through a tee pipe. The specific installation method depends on the actual situation and is selected by the customer.

[0026] Its working principle is as follows: When filtering liquid, liquid is injected from the inlet 7 of the lower end cover 5. The liquid enters the annular cavity 3, so that the liquid is evenly distributed on the outside of the filter element 2. After being filtered by the filter element 2, the liquid enters the interior of the filter element 2 and exits through the outlet and is discharged from the outlet 8 of the upper end cover 4. During cleaning, the cleaning water enters the interior of the filter element 2 from the outlet 8 and the outlet 26, and flows into the annular cavity 3 from all sides of the filter element 2, thereby cleaning the filter element 2. The wastewater after cleaning is discharged from the inlet 7, completing the backwash. The filter element 2 and the outer shell 1 adopt an integrated structure that does not need to be disassembled. The internal structure is simple and does not require the use of additional sealing structures, resulting in better sealing and the ability to withstand greater pressure. The uniform external dimensions and interfaces allow for the expansion of water supply by connecting multiple filters in parallel according to the difference in water consumption. After the liquid flows into the filter, it can be evenly distributed on the outside of the filter element 2, which can differentiate the pressure to protect the filter element 2 and disperse the liquid flow to improve filtration efficiency. After long-term use, it can be backwashed without replacing the filter element 2, thus extending the service life of the filter.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated filter, comprising a housing and a filter element, characterized in that, The filter element is coaxially arranged with the outer shell, and an annular cavity is provided between the outer side of the filter element and the inner wall of the outer shell. One end of the filter element is provided with a water outlet. The two ends of the outer shell are respectively provided with an upper end cover and a lower end cover. The inner end faces of the upper end cover and the lower end cover are provided with circumferentially distributed inner supports. The lower end cover is provided with a water inlet, and the upper end cover is provided with a water outlet that communicates with the water outlet. The upper end cover is provided with an exhaust hole that communicates with the annular cavity.

2. The integrated filter according to claim 1, characterized in that, The filter element is either a pleated filter element or an activated carbon filter element.

3. An integrated filter according to claim 1 or 2, characterized in that, The filter element includes an outer frame and an inner frame arranged coaxially, with a filter material layer between the outer frame and the inner frame. The upper end of the outer frame is fixedly connected to a lower cover and an upper cover, and the water outlet is located on the upper cover.

4. The integrated filter according to claim 3, characterized in that, The upper cover is provided with a water outlet head coaxial with the water outlet, and the water outlet head is inserted into the water inlet end of the upper cover.

5. The integrated filter according to claim 3, characterized in that, The inner supports on the upper and lower end caps respectively abut against the outer end faces of the upper and lower end caps.

6. The integrated filter according to claim 1, characterized in that, The outlet end of the water outlet and the inlet end of the water inlet are respectively located on the sides of the upper end cover and the lower end cover.

7. The integrated filter according to claim 1, characterized in that, Both the upper and lower end caps have U-shaped slots on the sidewalls facing away from the filter element.

8. The integrated filter according to claim 1, characterized in that, Both the upper and lower end caps have circumferentially distributed reinforcing ribs on the end face away from the filter element.

9. The integrated filter according to claim 1, characterized in that, The vent hole of the upper end cover is provided with internal threads.

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