Pre-filter

Abstract

The utility model relates to the technical field of water purification equipment, particularly provides a pre-filter, and aims to solve the problem that a valve cover and a filter bottle of an existing pre-filter are inconvenient to disassemble. In order to achieve the purpose, the pre-filter comprises a valve cover and a filter bottle, wherein the valve cover is provided with a first clamping structure, the filter bottle is provided with a second clamping structure opposite to the first clamping structure, and the valve cover rotates relative to the filter bottle so that the first clamping structure and the second clamping structure can be fastened or loosened. Through the arrangement, the valve cover and the filter bottle can be quickly mounted and dismounted only through mutual matching between the first clamping structure and the second clamping structure, so that the convenience of dismounting the pre-filter is improved, the user operation is greatly facilitated, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, and specifically provides a pre-filter. Background Art

[0002] The pre-filter is the first coarse filtration device for the water used in the whole house. It can filter out mud, rust or large particles in the tap water.

[0003] After long-term use, the filter bottle of the pre-filter needs to be disassembled, replaced or cleaned. When replacing the pre-filter, the valve cover and filter bottle of the existing pre-filter are usually screwed together. When the user manually disassembles it, he needs to exert a lot of force or use tools to remove the filter bottle from the valve cover, which is time-consuming and labor-intensive. It is inconvenient to disassemble and replace the pre-filter, and the user experience is not good.

[0004] Accordingly, the art needs a new pre-filter to solve the above problems. Utility Model Content

[0005] In order to solve the above problems in the prior art, that is, to solve the problem that the valve cover and the filter bottle of the existing pre-filter are inconvenient to disassemble.

[0006] The utility model provides a pre-filter, which comprises: a valve cover, on which a first clamping structure is provided; and a filter bottle, on which a second clamping structure opposite to the first clamping structure is provided; wherein the valve cover is rotated relative to the filter bottle to tighten or loosen the first clamping structure and the second clamping structure.

[0007] In the preferred technical solution of the above-mentioned pre-filter, the first clamping structure is a groove structure formed on the inner wall of the valve cover, and the second clamping structure is a cantilever structure arranged on the port of the filter bottle, and the cantilever structure extends into the groove structure and rotates so that the cantilever structure and the groove structure cooperate with each other.

[0008] In the preferred technical solution of the above-mentioned pre-filter, the groove structure includes a circumferential slot and an axial guide groove distributed along the inner wall of the valve cover, and the cantilever structure includes a strip arm and a support column supporting the strip arm. The strip arm is inserted into the circumferential slot through the axial guide groove to axially fasten the valve cover to the filter bottle.

[0009] In the preferred technical solution of the above-mentioned pre-filter, the number of the support columns is at least two, and the groove structure also includes a locking groove, and at least one of the support columns is snap-fitted with the locking groove to fasten the valve cover circumferentially to the filter bottle.

[0010] In the preferred technical solution of the above-mentioned pre-filter, a reinforcing plate is also provided on the port of the filter bottle, the reinforcing plate extends along the axial direction of the filter bottle, and the cantilever structure is fixed on one side of the reinforcing plate or the cantilever structure is integrally arranged with the reinforcing plate.

[0011] In the preferred technical solution of the above-mentioned pre-filter, an annular edge extending radially along the filter bottle is formed on the port of the filter bottle, and a plurality of plate ribs are provided between the annular edge and the outer wall of the filter bottle, and the plurality of plate ribs are evenly distributed along the circumference of the filter bottle.

[0012] In the above-mentioned preferred technical solution of the pre-filter, the pre-filter further comprises a sealing ring, and the sealing ring is located between the port of the valve cover and the annular edge.

[0013] In the preferred technical solution of the above-mentioned pre-filter, an arcuate surface is provided in the axial guide groove, and the arcuate surface is tangent to one side of the circumferential slot.

[0014] In the above-mentioned preferred technical solution of the pre-filter, a chamfered structure is provided at one end of the strip-shaped arm, and the chamfered structure and the arc-shaped surface cooperate with each other.

[0015] In the preferred technical solution of the above-mentioned pre-filter, the number of the first clamping structure and the second clamping structure are both set to at least two groups, the two groups of the first clamping structures are symmetrically distributed along the circumference of the valve cover, and the two groups of the second clamping structures are symmetrically distributed along the circumference of the port of the filter bottle.

[0016] It can be understood by those skilled in the art that the pre-filter of the utility model includes a valve cover and a filter bottle. Among them, a first clamping structure is provided on the valve cover, and a second clamping structure opposite to the first clamping structure is provided on the filter bottle. The valve cover rotates relative to the filter bottle to tighten or loosen the first clamping structure and the second clamping structure. Through such a setting, the valve cover and the filter bottle can be quickly installed and disassembled only by the cooperation between the first clamping structure and the second clamping structure, which improves the convenience of disassembling the pre-filter, greatly facilitates user operation, and improves user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the decomposed structure of the pre-filter of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the valve cover of the pre-filter of the utility model;

[0020] Figure 3It is a structural schematic diagram of the cantilever structure and the reinforcing plate of the pre-filter of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the cantilever structure of the pre-filter of the utility model;

[0022] Figure 5 It is a schematic diagram of the overall structure of the pre-filter of the utility model.

[0023] Reference numerals list :

[0024] 1. Valve cover; 11. Circumferential slot; 12. Axial guide groove; 121. Arc surface; 13. Locking groove; 2. Filter bottle; 21. Strip arm; 211. First chamfer; 212. Second chamfer; 213. Third chamfer; 22. Annular edge; 23. Plate rib; 241. First support column; 242. Second support column; 25. Reinforcement plate; 3. Sealing ring; 4. Filter element. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "horizontal", "vertical", "inside", "outside", "top", and "bottom" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] Specifically, Figure 1 and Figure 5As shown, the pre-filter of the utility model comprises a valve cover 1 and a filter bottle 2. The valve cover 1 of the pre-filter has a water inlet and a water outlet, a filter element 4 is installed in the filter bottle 2 of the pre-filter, a first clamping structure is provided on the valve cover 1, and a second clamping structure opposite to the first clamping structure is provided on the filter bottle 2. The valve cover 1 and the filter bottle 2 rotate clockwise or counterclockwise relative to each other to tighten or loosen the first clamping structure and the second clamping structure.

[0029] More specifically, the first clip-on structure in the embodiment of the utility model is a groove structure formed on the inner wall of the valve cover 1, and the second clip-on structure is a cantilever structure (a lying L-shape) arranged on the port of the filter bottle 2. When the filter bottle 2 rotates relative to the valve cover 1, the cantilever structure on the filter bottle 2 and the groove structure on the valve cover 1 can cooperate with each other.

[0030] It should be noted that, according to actual applications, technical personnel in this field may also set the groove structure on the filter bottle 2 and the cantilever structure on the valve cover 1. Such adjustments and changes to the coordinated settings of the groove structure and the cantilever structure on the valve cover 1 and the filter bottle 2 do not deviate from the principle and scope of the present utility model and should be limited within the protection scope of the present utility model.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, the number of groove structures (first clamping structures) and cantilever structures (second clamping structures) are set to two groups, the two groups of groove structures are symmetrically distributed along the inner circumference of the valve cover 1, and the two groups of cantilever structures are symmetrically distributed along the circumference of the port of the filter bottle 2.

[0032] It should be noted that, according to actual applications, technical personnel in this field may also set the number of groove structures and cantilever structures to three groups, or may also set the number of groove structures and cantilever structures to four groups or more than four groups, as long as the multiple groups of groove structures are evenly distributed circumferentially on the valve cover 1, and the cantilever structures are evenly distributed circumferentially on the filter bottle 2. Such adjustments and changes to the specific numbers of groove structures and cantilever structures on the valve cover 1 and the filter bottle 2 do not deviate from the principle and scope of the present utility model, and should be limited within the protection scope of the present utility model.

[0033] Preferably, if Figure 2 , Figure 3 and Figure 4As shown, the groove structure on the valve cover 1 of the utility model includes a circumferential slot 11 and an axial guide groove 12 distributed along the inner wall of the valve cover 1, and the cantilever structure on the filter bottle 2 includes a strip arm 21 and support columns 241 and 242 supporting the strip arm 21. The strip arm 21 in the cantilever structure and the circumferential slot 11 in the groove structure cooperate with each other. The filter bottle 2 is rotated to insert the strip arm 21 of the cantilever structure into the circumferential slot 11 of the groove structure, thereby fastening the valve cover 1 to the filter bottle 2 along the axial direction.

[0034] Preferably, if Figure 2 and Figure 4 As shown, the number of support columns 241, 242 of the cantilever structure on the filter bottle 2 of the utility model is two, and the groove structure on the valve cover 1 also includes a locking groove 13. At least one support column 241, 242 is snap-fitted with the locking groove 13 to fasten the valve cover 1 to the filter bottle 2 along the circumferential direction.

[0035] For example, Figure 4 As shown, the two support columns 241, 242 on the strip arm 21 of the cantilever structure include a first support column 241 and a second support column 242 located at one end of the strip arm 21, and the second support column 242 is locked with the locking groove 13. When the filter bottle 2 is rotated to insert the strip arm 21 in the cantilever structure into the circumferential slot 11 in the groove structure and then the valve cover 1 is axially fastened to the filter bottle 2, the second support column 242 is engaged with the locking groove 13 to fasten the valve cover 1 to the filter bottle 2 circumferentially, thereby ensuring that when the valve cover 1 or the filter bottle 2 is subjected to a circumferential external force, the valve cover 1 does not loosen from the filter bottle 2, thereby ensuring the safety of the use of the pre-filter.

[0036] It should be noted that, according to actual applications, those skilled in the art may also provide a groove structure on the filter bottle 2, and provide a protrusion corresponding to the groove structure on the valve cover so that the valve cover 1 is circumferentially fastened to the filter bottle 2. Such adjustments and changes to the specific locking structure between the valve cover 1 and the filter bottle 2 do not deviate from the principle and scope of the present utility model, and should be limited within the protection scope of the present utility model.

[0037] In addition, it should be noted that, according to actual applications, technical personnel in this field may also set the number of support columns 241 and 242 to three or more. Such adjustments and changes to the specific setting number of support columns 241 and 242 do not deviate from the principle and scope of the present utility model and should be limited within the protection scope of the present utility model.

[0038] Preferably, if Figure 2 As shown, an arc surface 121 is provided in the axial guide groove 12 of the groove structure on the valve cover 1 of the utility model, and the arc surface 121 is tangent to one side of the circumferential slot 11 .

[0039] For example, Figure 2As shown, the horizontal top surface of the circumferential slot 11 of the groove structure on the valve cover 1 transitions to the arc surface 121 of the axial guide groove 12. When one end of the strip arm 21 of the cantilever structure enters along the axial guide groove 12, the other end of the strip arm 21 can be rotated along the circumferential direction and introduced into the circumferential slot 11 by means of the arc surface 121 on the axial guide groove 12.

[0040] Preferably, if Figure 4 As shown, one end of the strip arm 21 of the cantilever structure of the present invention is provided with a chamfered structure, and the chamfered structure and the arc surface 121 cooperate with each other.

[0041] For example, Figure 4 As shown, the chamfer structure on the strip arm 21 of the cantilever structure includes a first chamfer 211 opposite to the first support column 241 and a second chamfer 212 and a third chamfer 213 formed on the upper and lower sides of the other end of the strip arm 21. The first chamfer 211 cooperates with the arc surface 121 in the groove structure to reduce the friction between the strip arm 21 and the arc surface 121, and reduce the sliding resistance of the strip arm 21 on the arc surface 121. The second chamfer 212 and the third chamfer 213 make the other end of the strip arm 21 be configured into a conical structure so that the end of the strip arm 21 can smoothly enter the circumferential slot 11.

[0042] Preferably, if Figure 3 As shown, a reinforcing plate 25 is further provided on the port of the filter bottle 2 of the utility model. The reinforcing plate 25 extends along the axial direction of the filter bottle 2 , and the cantilever structure and the reinforcing plate 25 are integrally arranged.

[0043] For example, Figure 3 As shown, the strip arm 21 and the support columns 241 , 242 of the cantilever structure are all located on the outer side wall of the reinforcing plate 25 , and the strip arm 21 , the support columns 241 , 242 and the reinforcing plate 25 form an integral structure.

[0044] It can be understood that the reinforcing plate 25 can enhance the overall stability of the strip arm 21 and the support columns 241 and 242 , and improve the stability of the connection between the cantilever structure on the filter bottle 2 and the groove structure on the valve cover 1 .

[0045] It should be noted that, according to actual applications, technical personnel in this field may also fix the cantilever structure as an independent structure separately on one side of the reinforcing plate 25, as long as the overall stability of the cantilever structure can be guaranteed. Such adjustment and change of the specific connection method between the cantilever structure and the reinforcing plate 25 does not deviate from the principle and scope of the present utility model, and should be limited within the protection scope of the present utility model.

[0046] Preferably, if Figure 4 and Figure 5As shown, an annular edge 22 extending radially along the filter bottle 2 is formed on the port of the filter bottle 2 of the utility model, and a plurality of plate ribs 23 are provided between the annular edge 22 and the outer wall of the filter bottle 2. The plurality of plate ribs 23 are evenly distributed along the circumference of the filter bottle 2.

[0047] For example, Figure 4 As shown, there are 8 plate ribs 23 between the annular edge 22 and the outer side wall of the filter bottle 2, and the 8 plate ribs 23 are evenly distributed along the circumference of the outer surface of the filter bottle 2. The length direction of the plate ribs 23 is parallel to the axial direction of the filter bottle 2.

[0048] It can be understood that, on the one hand, the plate ribs 23 can enhance the structural stability of the annular edge 22 so that the annular edge 22 can be tightly connected with the port of the valve cover 1; on the other hand, when the filter bottle 2 is rotated by using the plate ribs 23, the holding stability of the filter bottle 2 can be effectively improved to prevent the user from slipping when disassembling the pre-filter.

[0049] Preferably, if Figure 1 and Figure 5 As shown, the pre-filter of the present invention further comprises a sealing ring 3 , which is located between the port of the valve cover 1 and the annular edge 22 .

[0050] It can be understood that when the sealing ring 3 is clamped between the port of the valve cover 1 and the annular edge 22 of the filter bottle 2, the sealing ring 3 can effectively prevent the water inside the filter bottle 2 from leaking through the gap between the port of the valve cover 1 and the annular edge 22, thereby improving the sealing performance of the pre-filter.

[0051] It can be understood by those skilled in the art that when only a cantilever structure is used on the filter bottle 2, a metal material such as stainless steel or copper can be selected; similarly, when the cantilever structure on the filter bottle 2 is reinforced by a reinforcing plate 25, hard plastic can be selected as the material of the cantilever structure and the reinforcing plate 25. Such adjustments and changes to the specific materials of the reinforcing plate 25 and the cantilever structure do not deviate from the principle and scope of the present utility model, and should be limited within the protection scope of the present utility model.

[0052] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pre-filter, characterized in that: include: A valve cover (1) having a first clamping structure provided thereon; and A filter bottle (2) is provided with a second clamping structure opposite to the first clamping structure; Wherein, the valve cover (1) is rotated relative to the filter bottle (2) to fasten or loosen the first clamping structure and the second clamping structure; The first clamping structure is a groove structure formed on the inner wall of the valve cover (1), and the second clamping structure is a cantilever structure arranged on the port of the filter bottle (2), and the cantilever structure extends into the groove structure and rotates so that the cantilever structure and the groove structure cooperate with each other.

2. The pre-filter according to claim 1, characterized in that: The groove structure comprises a circumferential slot (11) and an axial guide groove (12) distributed along the inner wall of the valve cover (1); the cantilever structure comprises a strip arm (21) and a support column (241, 242) supporting the strip arm (21); the strip arm (21) is inserted into the circumferential slot (11) through the axial guide groove (12) to axially fasten the valve cover (1) to the filter bottle (2).

3. The pre-filter according to claim 2, characterized in that: The number of the support columns (241, 242) is at least two, and the groove structure further comprises a locking groove (13), and at least one of the support columns (241, 242) is snap-fitted with the locking groove (13) to fasten the valve cover (1) to the filter bottle (2) along the circumferential direction.

4. The pre-filter according to claim 1, characterized in that: A reinforcing plate (25) is also provided on the port of the filter bottle (2), the reinforcing plate (25) extending along the axial direction of the filter bottle (2), the cantilever structure being fixed on one side of the reinforcing plate (25) or the cantilever structure and the reinforcing plate (25) being integrally provided.

5. The pre-filter according to claim 1, characterized in that: An annular edge (22) extending radially along the filter bottle (2) is formed on the port of the filter bottle (2), and a plurality of plate ribs (23) are provided between the annular edge (22) and the outer wall of the filter bottle (2), and the plurality of plate ribs (23) are evenly distributed along the circumference of the filter bottle (2).

6. The pre-filter according to claim 5, characterized in that: The pre-filter further comprises a sealing ring (3), wherein the sealing ring (3) is located between the port of the valve cover (1) and the annular edge (22).

7. The pre-filter according to claim 2, characterized in that: An arc surface (121) is provided in the axial guide groove (12), and the arc surface (121) is tangent to one side of the circumferential slot (11).

8. The pre-filter according to claim 7, characterized in that: One end of the strip-shaped arm (21) is provided with a chamfered structure, and the chamfered structure and the arc-shaped surface (121) cooperate with each other.

9. The pre-filter according to claim 1, characterized in that: The number of the first clamping structure and the number of the second clamping structure are both set to at least two groups, the two groups of the first clamping structure are symmetrically distributed along the circumference of the valve cover (1), and the two groups of the second clamping structure are symmetrically distributed along the circumference of the port of the filter bottle (2).

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