External support straight-through type filter element and disassembly-free filter thereof

Abstract

The external support straight-through type filter element comprises a middle filtering part formed by gathering a plurality of ultrafiltration membrane fiber tubes in parallel, an upper tube end fixing part is arranged at the upper end of the middle filtering part, an upper tube opening of each ultrafiltration membrane fiber tube is exposed out of the upper tube end fixing part, and a lower tube opening of each ultrafiltration membrane fiber tube is exposed out of the lower tube end fixing part. A lower pipe end fixing part is arranged at the lower end of the middle filtering part, lower pipe openings of the ultrafiltration membrane fiber pipes are exposed out of the lower pipe end fixing part, the upper pipe end fixing part is sleeved with an upper end outer cylinder sleeve, the lower pipe end fixing part is sleeved with a lower end outer cylinder sleeve, an outer supporting cylinder is arranged between the upper end outer cylinder sleeve and the lower end outer cylinder sleeve, and the ultrafiltration membrane fiber pipes are all located in the outer supporting cylinder. And an inner water outlet is formed in the outer supporting cylinder. According to the utility model, impurities in the ultrafiltration membrane filament tube of the filter element can be directly washed out, the filter element does not need to be detached from the filter during washing, the operation is simple and rapid, and the cleaning effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, especially relate to a kind of outer support straight-through type filter element and its disassembly-free filter. BACKGROUND

[0002] Filter is a kind of for purifying water and treating the appliance, its conventional purification mode is raw water from the water inlet of filter into its inside, raw water passes through filter inside filter element, filter element filters solid particle impurities in raw water outside filter element, water enters the inside of filter element, and finally from the outlet of filter is discharged, to realize purifying water quality. Long-term use filter needs to be disassembled to clean the filter element inside, it is very inconvenient to operate.

[0003] In order to reduce the difficulty of filter cleaning, the market has launched the filter without disassembling the shell to clean the filter element inside. The Chinese utility model patent with the authorization announcement number CN208561785U discloses a kind of filter, its bottom is provided with waste water port, when cleaning the filter element inside, water enters from the water inlet on the upper side of shell, water enters from the upper pipe opening of ultrafiltration membrane silk pipe of filter element, and then flows out from the lower pipe opening of ultrafiltration membrane silk pipe, and finally is discharged from the waste water port on the lower side of shell, to complete the cleaning of filter element. Although water enters from the upper pipe opening of ultrafiltration membrane silk pipe and then flows out from the lower pipe opening, the impurities in the ultrafiltration membrane silk pipe can be flushed out in this process, but the flushing effect is limited. According to the record in the patent, it is still necessary to further use ultrasonic generator to break the impurities in the ultrafiltration membrane silk pipe into small particles, so as to completely clean the inner wall of ultrafiltration membrane silk pipe. Therefore, we propose a kind of outer support straight-through type filter element and its disassembly-free filter. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the deficiencies of prior art, and provides a kind of outer support straight-through type filter element and its disassembly-free filter.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of outer support straight-through type filter element, including the middle filter part that is by a plurality of ultrafiltration membrane silk pipe parallel aggregation, the upper end of the middle filter part is equipped with upper pipe end fixed part, the upper pipe opening of the ultrafiltration membrane silk pipe is exposed to the upper pipe end fixed part, the lower end of the middle filter part is equipped with lower pipe end fixed part, the lower pipe opening of the ultrafiltration membrane silk pipe is exposed to the lower pipe end fixed part, the upper pipe end fixed part is equipped with upper end outer cylinder sleeve, the lower pipe end fixed part is equipped with lower end outer cylinder sleeve, outer support cylinder is equipped between the upper end outer cylinder sleeve and the lower end outer cylinder sleeve, a plurality of ultrafiltration membrane silk pipe are all located in the outer support cylinder, inner water outlet is opened at the outer support cylinder.

[0006] Further, the upper end outer sleeve is provided with a first sealing ring, the first sealing ring is in U-shaped groove shape, the U-shaped mouth of the first sealing ring faces upward, and the U-shaped bottom of the first sealing ring is in abutment with the upper annular surface of the uppermost first convex ring part.

[0007] Further, the upper end outer sleeve is provided with a first sealing ring, the first sealing ring is in U-shaped groove shape, the U-shaped mouth of the first sealing ring faces upward, and the U-shaped bottom of the first sealing ring is in abutment with the upper annular surface of the uppermost first convex ring part.

[0008] Further, the lower pipe end fixing part is provided with a second sealing ring, the second sealing ring is in U-shaped groove shape, the U-shaped mouth of the second sealing ring faces downward, and the two sides of the second sealing ring are in abutment with the inner wall of the lower end outer sleeve and the outer wall of the lower pipe end fixing part respectively.

[0009] Further, the upper annular groove and the lower annular groove are both provided with O-shaped sealing rings.

[0010] A disassembly-free filter based on the above-mentioned outer support straight-through type filter element, the filter comprising a shell and a shell cover, the filter element being arranged in the inner cavity formed by the shell and the shell cover, the inner bottom surface of the shell cover being provided with a convex abutting part for limiting the up-and-down movement of the filter element, the upper end of the shell being provided with an external water inlet and an external water outlet, the external water inlet being located above the first convex ring part of the filter element, the external water outlet being located between the first convex ring part and the second convex ring part of the filter element, and the lower end of the shell being provided with a waste water outlet, the waste water outlet being located below the filter element.

[0011] Specifically, the external water inlet, the external water outlet and the waste water outlet are all provided with detachable water port plugging members.

[0012] Specifically, the filter further comprises a locking ring buckle for locking the shell cover to the shell.

[0013] The beneficial effects of the present utility model lie in that the present utility model can directly flush out the impurities in the ultrafiltration membrane silk tube of the filter element, and the filter element does not need to be disassembled from the filter during flushing, the operation is simple and fast, and the cleaning effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 4 is a structural schematic view of the filter when the shell cover is opened.

[0015] Figure 2 Fig. 5 is a structural schematic view of the filter element being pulled out of the shell of the filter.

[0016] Figure 3 Fig. 6 is a structural sectional view of the filter element.

[0017] Figure 4 This is a cross-sectional view of the filter structure when a U-shaped groove sealing ring is used for sealing.

[0018] Figure 5 This is a partial structural cross-sectional view of the filter when filtering raw water.

[0019] Figure 6 This is a partial structural cross-sectional view of the filter during filter element cleaning.

[0020] Figure 7 This is a cross-sectional view of the filter structure when an O-ring is used for sealing.

[0021] Reference numerals: 101, Ultrafiltration membrane fiber tube; 11, Upper tube end fixing part; 12, Lower tube end fixing part; 13, Upper outer sleeve; 131, First convex ring part; 1311, Upper annular surface; 132, Upper annular groove; 14, Lower outer sleeve; 141, Second convex ring part; 142, Lower annular groove; 15, Outer support cylinder; 151, Inner outlet; 16, First sealing ring; 17, Second sealing ring; 18, O-ring seal; 20, Outer shell; 21, External inlet; 22, External outlet; 23, Wastewater outlet; 30, Shell cover; 31, Protruding pressing part; 40, Inlet sealing component; 50, Locking ring. Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Combined with appendix Figure 3 As shown, an externally supported straight-through filter element includes an intermediate filtration section composed of several ultrafiltration membrane filaments 101 arranged in parallel. The upper end of the intermediate filtration section is provided with an upper tube end fixing part 11, and the upper tube opening of the ultrafiltration membrane filaments 101 is exposed in the upper tube end fixing part 11. The lower end of the intermediate filtration section is provided with a lower tube end fixing part 12, and the lower tube opening of the ultrafiltration membrane filaments 101 is exposed in the lower tube end fixing part 12. An upper outer sleeve 13 is fitted at the upper tube end fixing part 11, and a lower outer sleeve 14 is fitted at the lower tube end fixing part 12. An outer support cylinder 15 is provided between the upper outer sleeve 13 and the lower outer sleeve 14. Several ultrafiltration membrane filaments 101 are all located inside the outer support cylinder 15, and an inner water outlet 151 is opened at the outer support cylinder 15. The outer support cylinder 15 serves two purposes: firstly, it provides physical protection for the internal ultrafiltration membrane filament tube 101; secondly, it supports the upper outer sleeve 13 and the lower outer sleeve 14 at both ends, thereby keeping the ultrafiltration membrane filament tube 101 in a straight state.

[0024] As attached Figure 3As shown, a plurality of first convex ring portions 131 are arranged at the upper end outer sleeve 13, and an upper annular groove 132 for mounting a sealing ring is arranged between two adjacent first convex ring portions 131; a plurality of second convex ring portions 141 are arranged at the lower end outer sleeve 14, and a lower annular groove 142 for mounting a sealing ring is arranged between two adjacent second convex ring portions 141.

[0025] In combination with the accompanying drawings Figure 3 and the accompanying drawings Figure 4 As shown, when the filter is sealed by a U-shaped groove-shaped sealing ring, a first sealing ring 16 is sleeved at the upper end outer sleeve 13, the first sealing ring 16 is in a U-shaped groove shape, the U-shaped opening of the first sealing ring 16 faces upward, and the bottom of the U-shaped groove of the first sealing ring 16 abuts against the upper annular surface 1311 of the uppermost first convex ring portion 131. A second sealing ring 17 is sleeved at the lower pipe end fixing portion 12, the second sealing ring 17 is in a U-shaped groove shape, the U-shaped opening of the second sealing ring 17 faces downward, and the two sides of the second sealing ring 17 respectively abut against the inner wall of the lower end outer sleeve 14 and the outer wall of the lower pipe end fixing portion 12.

[0026] In addition, in combination with the accompanying drawings Figure 3 and the accompanying drawings Figure 7 As shown, when the filter is sealed by an O-shaped sealing ring, two O-shaped sealing rings 18 are respectively sleeved at the upper annular groove 132 of the upper end outer sleeve 13 and the lower annular groove 142 of the lower end outer sleeve 14.

[0027] In combination with the accompanying drawings Figure 1 to the accompanying drawings Figure 7 As shown, a disassembly-free filter based on the above-mentioned filter element, the filter comprises a shell 20 and a shell cover 30, the filter element is arranged in the inner cavity formed by the shell 20 and the shell cover 30, and the filter further comprises a locking ring buckle 50 for locking the shell cover 30 to the shell 20.

[0028] The inner bottom surface of the shell cover 30 is provided with a convex abutting portion 31 for limiting the up-and-down movement of the filter element, the upper end of the shell 20 is provided with an external water inlet 21 and an external water outlet 22, the external water inlet 21 is located above the first convex ring portion 131 of the filter element, the external water outlet 22 is located between the first convex ring portion 131 and the second convex ring portion 141 of the filter element, and the lower end of the shell 20 is provided with a waste water outlet 23, which is located below the filter element. The external water inlet 21, the external water outlet 22, and the waste water outlet 23 are respectively provided with a detachable water outlet plugging member 40.

[0029] In combination with the accompanying drawings Figure 4 As shown, before the filter filters raw water, the water outlet plugging member 40 is used to plug the waste water outlet 23 of the shell 20, so that the waste water outlet 23 is in a plugged state, and the external water outlet 22 is in an open state, and then the raw water can be filtered. As shown in the accompanying drawings Figure 5As indicated by the arrow, raw water enters from the external inlet 21 of the outer casing 20, flows along the upper outer sleeve 13 of the filter element to the casing cover 30, then passes through the gap between the casing cover 30 and the upper tube end fixing part 11 of the filter element, and enters the tube of the ultrafiltration membrane filament tube 101 through the upper tube opening. Because the wastewater outlet 23 is blocked, the raw water entering the ultrafiltration membrane filament tube 101 cannot continuously flow out from the lower tube opening; the raw water can only pass through the tube wall of the ultrafiltration membrane filament tube 101. Under the action of the ultrafiltration membrane filament tube 101, impurity particles in the raw water are intercepted inside the tube, and the raw water passes through the tube wall of the ultrafiltration membrane filament tube 101 to become filtered purified water. (See attached...) Figure 5 As indicated by the arrow, purified water flows from the inner outlet 151 of the outer support cylinder 15 of the filter element to the outer outlet 22 of the outer shell 20, thus completing the discharge of filtered purified water.

[0030] Combined with appendix Figure 6 As shown, before cleaning the filter element inside the filter, the external water outlet 22 at the outer casing 20 must be blocked with the water outlet sealing piece 40 to ensure that the external water outlet 22 is in a blocked state, and the wastewater outlet 23 is in an open state. Then the filter element can be cleaned. (See attached diagram) Figure 6 As indicated by the arrow, high-pressure water enters from the external inlet 21 of the outer casing 20, flows along the upper outer sleeve 13 of the filter element to the casing cover 30, then passes through the gap between the casing cover 30 and the upper tube end fixing part 11 of the filter element, and is flushed into the tube of the ultrafiltration membrane filament tube 101 from the upper tube opening. Since the external outlet 22 is in a blocked state and the wastewater outlet 23 is in an open state, the external support cylinder 15 keeps the ultrafiltration membrane filament tube 101 in a straight state. The high-pressure water flow that enters the ultrafiltration membrane filament tube 101 can maintain a high flow rate and be flushed out from the lower tube opening of the ultrafiltration membrane filament tube 101, thereby washing out the impurities on the inner tube wall of the ultrafiltration membrane filament tube 101. Finally, the washed-out impurities are discharged outward through the wastewater outlet 23.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] It should be understood that the terms "first", "second" and the like in the present application are used to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0033] The above is not intended to limit the technical scope of the present application in any way, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belongs to the technical scope of the present application.

Claims

1. An outer support straight-through type filter cartridge comprising an intermediate filter section formed by juxtaposing and gathering a plurality of ultrafiltration membrane filaments (101), characterized in that: The upper end of the intermediate filter part is provided with an upper pipe end fixing part (11), the upper pipe opening of the ultrafiltration membrane filament pipe (101) is exposed to the upper pipe end fixing part (11), the lower end of the intermediate filter part is provided with a lower pipe end fixing part (12), the lower pipe opening of the ultrafiltration membrane filament pipe (101) is exposed to the lower pipe end fixing part (12), the upper pipe end fixing part (11) is sleeved with an upper end outer cylinder sleeve (13), the lower pipe end fixing part (12) is sleeved with a lower end outer cylinder sleeve (14), an outer supporting cylinder (15) is arranged between the upper end outer cylinder sleeve (13) and the lower end outer cylinder sleeve (14), a plurality of ultrafiltration membrane filament pipes (101) are located in the outer supporting cylinder (15), and an inner water outlet (151) is formed in the outer supporting cylinder (15).

2. An externally supported in-line filter cartridge according to claim 1 wherein: The upper end outer cylinder sleeve (13) is provided with a plurality of first convex ring parts (131), and an upper annular groove (132) for mounting a sealing ring is arranged between adjacent two first convex ring parts (131); the lower end outer cylinder sleeve (14) is provided with a plurality of second convex ring parts (141), and a lower annular groove (142) for mounting a sealing ring is arranged between adjacent two second convex ring parts (141).

3. An externally supported, straight-through filter cartridge according to claim 2 wherein: The upper end outer cylinder sleeve (13) is sleeved with a first sealing ring (16), the first sealing ring (16) is in a U-shaped groove shape, the U-shaped opening of the first sealing ring (16) faces upward, and the U-shaped bottom of the first sealing ring (16) is in abutment with the upper side annular surface (1311) of the uppermost first convex ring part (131).

4. An externally supported, straight-through filter cartridge according to claim 3 wherein: The lower pipe end fixing part (12) is sleeved with a second sealing ring (17), the second sealing ring (17) is in a U-shaped groove shape, the U-shaped opening of the second sealing ring (17) faces downward, and the two sides of the second sealing ring (17) are in abutment with the inner wall of the lower end outer cylinder sleeve (14) and the outer wall of the lower pipe end fixing part (12) respectively.

5. An externally supported in-line filter cartridge according to claim 2 wherein: The upper annular groove (132) and the lower annular groove (142) are both sleeved with O-shaped sealing rings (18).

6. A knockdown filter characterized by: Based on any one of the above claims 1-5, an outer supporting straight-through type filter element, the filter comprises a shell (20) and a shell cover (30), the filter element is arranged in the inner cavity formed by the shell (20) and the shell cover (30), the inner bottom surface of the shell cover (30) is provided with a convex abutting part (31) for limiting the up-and-down movement of the filter element, the upper end of the shell (20) is provided with an external water inlet (21) and an external water outlet (22), the external water inlet (21) is located above the first convex ring part (131) of the filter element, the external water outlet (22) is located between the first convex ring part (131) and the second convex ring part (141) of the filter element, and the lower end of the shell (20) is provided with a waste water outlet (23), the waste water outlet (23) is located below the filter element.

7. A non-disassembly type filter according to claim 6, wherein: The external water inlet (21), the external water outlet (22), and the waste water outlet (23) are all provided with detachable water port blocking pieces (40).

8. A non-disassembly type filter according to claim 6, wherein: The filter further comprises a locking ring buckle (50) for locking the shell cover (30) to the shell (20).

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