Clamping type pre-filter and water purification equipment

Abstract

The utility model discloses a clamping type prefilter which comprises a valve head and a filter bottle installed at the lower end of the valve head, a cylinder wall extending downwards is arranged on the periphery of the valve head, an inner protruding block is arranged on the inner side of the cylinder wall, an outer protruding block is arranged on the outer side of the upper end of the filter bottle, and the inner protruding block and the outer protruding block are staggered before installation. And the outer convex block moves to the upper part of the inner convex block. A traditional threaded connection mode is replaced, locking and unlocking can be achieved by simply rotating the filter bottle, tools such as a wrench are not needed, mounting and dismounting are convenient and fast, the using environment is not limited, and the working efficiency and the working convenience are improved. The utility model further discloses water purification equipment comprising the clamping type pre-filter.

Description

Technical Field

[0001] The utility model relates to the field of water purification, in particular to a snap-on pre-filter. In addition, the utility model also relates to a water purification device comprising the snap-on pre-filter. Background Art

[0002] Urban water supply pipelines are old and long, and rust, sediment, and other impurities can cause malfunctions in water-using equipment. Therefore, water purification equipment is essential for these devices. A pre-filter is the first coarse filter for household water, filtering out sediment, rust, and large particles from tap water. This prevents the large amount of precipitated impurities generated in urban and residential water supply networks from causing harm to the human body, and also provides proactive protection for concealed pipes, faucets, plumbing, water heaters, boilers, central air conditioners, washing machines, dishwashers, coffee machines, water purifiers, water purifiers, water softeners, and more.

[0003] The existing pre-filter includes a valve head and a filter bottle installed under the valve head. The filter bottles are all made of plastic injection molding and are connected to the valve head with threads. The process of replacing the filter element during installation, disassembly and subsequent maintenance is very cumbersome. It is difficult to disassemble the filter bottle and the valve head with bare hands, and a wrench is required. When installed under the kitchen, the wrench has limited space for movement and is difficult to use.

[0004] Therefore, how to provide a snap-on pre-filter that can be installed and removed conveniently and quickly is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0005] The present invention provides a snap-on prefilter. During installation, the upper end of the filter bottle is directly inserted into the cylindrical wall at the lower end of the valve head. Rotating the filter bottle allows the inner and outer protrusions to snap into place, making installation and removal quick and easy, and allowing for unrestricted use in any environment. Another object of the present invention is to provide a water purification device including the snap-on prefilter.

[0006] In order to solve the above technical problems, the utility model provides a snap-on pre-filter, including a valve head and a filter bottle installed at the lower end of the valve head, the outer periphery of the valve head is provided with a downwardly extending cylindrical wall, the inner side of the cylindrical wall is provided with an inner protrusion, and the outer side of the upper end of the filter bottle is provided with an outer protrusion. Before installation, the inner protrusion and the outer protrusion are staggered. During installation, the upper end of the filter bottle is inserted into the cylindrical wall and the filter bottle is rotated to move the outer protrusion above the inner protrusion.

[0007] Preferably, a limiting rib is provided below the rear end of the outer convex block, and when the outer convex block moves to above the inner convex block, the limiting rib abuts against the front end of the inner convex block.

[0008] Preferably, a vertical positioning groove is provided at the front end of the side surface of the inner convex block, and a positioning rib is provided below the rear end of the outer convex block. The positioning rib is located in front of the limiting rib, and when the outer convex block moves to above the inner convex block, the positioning rib is stuck in the positioning groove.

[0009] Preferably, the forward end of the outer convex block is provided with an outer guide slope inclined from top to bottom and backward, the head end of the inner convex block is provided with an inner guide slope inclined from bottom to top and backward, and the limiting rib is inclined and the inclination direction is the same as that of the inner guide slope.

[0010] Preferably, the positioning groove and the positioning rib have a smooth transition at their corners.

[0011] Preferably, it comprises four inner convex blocks and four outer convex blocks that are evenly arranged.

[0012] Preferably, a sealing groove surrounding the filter bottle is provided on the outer side of the upper end of the filter bottle, and a sealing ring is installed in the sealing groove and is located above the outer protrusion.

[0013] Preferably, a filter element assembly is provided in the filter bottle, a water inlet joint and a water outlet joint extending to both sides are provided at the upper end of the valve head, and a sewage valve is connected to the lower end of the filter bottle through a sealing member.

[0014] Preferably, an upper buckle is provided on the outer side of the cylinder wall, and a lower buckle is provided on the corresponding position on the outer side of the filter bottle. After the filter bottle and the valve head are installed, the upper buckle is buckled with the lower buckle.

[0015] The utility model provides a water purification device, comprising the snap-on pre-filter as described in any one of the above items.

[0016] The utility model provides a snap-on pre-filter, comprising a valve head and a filter bottle installed at the lower end of the valve head, a downwardly extending cylindrical wall is provided on the outer periphery of the valve head, an inner convex block is provided on the inner side of the cylindrical wall, and an outer convex block is provided on the outer side of the upper end of the filter bottle, the inner convex block and the outer convex block are staggered before installation, and during installation, the upper end of the filter bottle is inserted into the cylindrical wall and the filter bottle is rotated so that the outer convex block moves above the inner convex block.

[0017] During installation, the upper end of the filter bottle is aligned with the opening of the cylinder wall at the lower end of the valve head. At this time, the inner and outer protrusions are offset. The upper end of the filter bottle is inserted into the cylinder wall until the height of the outer protrusion is higher than that of the inner protrusion. Then, the filter bottle is rotated to move the outer protrusion above the inner protrusion. The outer protrusion is pressed on the inner protrusion to limit the vertical position of the filter bottle, and the valve head and filter bottle are fixed. When disassembly is required, the filter bottle is rotated in the opposite direction to offset the inner and outer protrusions, release the vertical limit, and then the filter bottle can be removed downward. Instead of the traditional threaded connection method, simply rotating the filter bottle can achieve locking and unlocking, without the need for tools such as wrenches. Installation and disassembly are convenient and quick, and the use environment is not restricted, thereby improving work efficiency and convenience.

[0018] The present utility model also provides a water purification device including the above-mentioned snap-on pre-filter. Since the above-mentioned snap-on pre-filter has the above-mentioned technical effects, the above-mentioned water purification device should also have the same technical effects, which will not be introduced in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a specific embodiment of the clip-on pre-filter provided by the utility model;

[0020] Figure 2 This is a partial enlarged view of the connection portion of a specific embodiment of the clip-on pre-filter provided by the present invention;

[0021] Figure 3 This is a structural diagram of the valve head in a specific embodiment of the clip-on pre-filter provided by the present invention;

[0022] Figure 4 This is a structural schematic diagram of a filter bottle in a specific embodiment of the clip-on pre-filter provided by the present invention;

[0023] Figure 5 A partial enlarged view of the inner protrusion in a specific embodiment of the clip-on pre-filter provided by the present invention;

[0024] Figure 6 A partial enlarged view of the outer protrusion in a specific embodiment of the clip-on pre-filter provided by the present invention;

[0025] Figure 7 A schematic diagram of the filtering state of a specific embodiment of the clip-on pre-filter provided by the present invention;

[0026] Figure 8 This is a schematic diagram of the sewage discharge state of a specific embodiment of the clip-on pre-filter provided by the utility model.

[0027] Among them, the valve head 1, the filter bottle 2, the sealing groove 21, the inner protrusion 3, the positioning groove 31, the inner guide slope 32, the outer protrusion 4, the limiting rib 41, the positioning rib 42, the outer guide slope 43, the filter element assembly 5, the seal 6, the drain valve 7, and the sealing ring 8. DETAILED DESCRIPTION

[0028] The core of this utility model is to provide a snap-on prefilter. During installation, the upper end of the filter bottle is directly inserted into the cylindrical wall at the lower end of the valve head. The filter bottle is rotated to achieve snap-on connection via the inner and outer protrusions. This makes installation and removal convenient and quick, and its use environment is not restricted. Another core of this utility model is to provide a water purification device including the above-mentioned snap-on prefilter.

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0030] Please refer to Figures 1 to 4 , Figure 1 This is a structural diagram of a specific embodiment of the clip-on pre-filter provided by the utility model; Figure 2 This is a partial enlarged view of the connection portion of a specific embodiment of the clip-on pre-filter provided by the present invention; Figure 3 This is a structural diagram of the valve head in a specific embodiment of the clip-on pre-filter provided by the present invention; Figure 4 This is a structural schematic diagram of a filter bottle in a specific embodiment of the snap-on pre-filter provided by the present invention.

[0031] The present invention provides a snap-on pre-filter comprising a valve head 1 and a filter bottle 2, wherein the outer periphery of the valve head 1 is provided with a downwardly extending cylindrical wall, forming a cylindrical structure with a closed upper end and an open lower end. The filter bottle 2 is a cylindrical structure with an open upper end. During installation, the upper end of the filter bottle 2 is inserted through the lower opening of the cylindrical wall, that is, the valve head 1 covers the upper end of the filter bottle 2, and the filter bottle 2 is installed at the lower end of the valve head 1. The upper end of the valve head 1 is provided with an inlet connector and an outlet connector extending to both sides, and the inlet connector and the outlet connector are provided with a threaded structure. The inlet connector is connected to the household main water supply, and the outlet pipe is connected to the household main water supply, thereby pre-filtering the entire water supply. An inner protrusion 3 is provided on the inner side of the cylindrical wall, and an outer protrusion 4 is provided on the outer side of the upper end of the filter bottle 2. Before installation, the inner protrusion 3 and the outer protrusion 4 are staggered. During installation, the upper end of the filter bottle 2 is inserted into the cylindrical wall and the filter bottle 2 is rotated to move the outer protrusion 4 above the inner protrusion 3. Furthermore, the lower end of the filter bottle 2 is connected to a drain valve 7 via a seal 6. Specifically, the drain valve 7 can be a drain ball valve. Of course, the water inlet and outlet joints can also be arranged in other ways, and the lower end drain valve can also be of other valve types, all of which are within the scope of protection of the present invention.

[0032] During installation, the upper end of the filter bottle 2 is aligned with the opening in the cylindrical wall at the lower end of the valve head 1. At this time, the inner protrusion 3 and the outer protrusion 4 are offset. The upper end of the filter bottle 2 is inserted into the cylindrical wall until the height of the outer protrusion 4 is higher than that of the inner protrusion 3. The filter bottle 2 is then rotated to move the outer protrusion 4 above the inner protrusion 3. The outer protrusion 4 presses on the inner protrusion 3 to limit the vertical position of the filter bottle 2, thereby locking and fixing the valve head 1 and the filter bottle 2. To remove the filter bottle, the filter bottle 2 is rotated in the opposite direction to offset the inner protrusion 3 and the outer protrusion 4. The vertical limit is released and the filter bottle 2 can be removed downward. Instead of the traditional threaded connection method, the filter bottle 2 can be locked and unlocked by simply rotating the filter bottle 2, without the need for tools such as wrenches. Installation and removal are convenient and quick, and the use environment is not restricted, improving work efficiency and convenience.

[0033] Please refer to Figure 5 and Figure 6 , Figure 5 A partial enlarged view of the inner protrusion in a specific embodiment of the clip-on pre-filter provided by the present invention; Figure 6 This is a partial enlarged view of the outer protrusion in a specific embodiment of the clip-on pre-filter provided by the utility model.

[0034] In the snap-on pre-filter provided in the specific embodiment of the present invention, the two ends of the outer protrusion 4 in the horizontal direction are respectively the forward end and the rearward end, and the two ends of the inner protrusion 3 in the horizontal direction are respectively the head end and the tail end. During the installation process, the filter bottle 2 rotates forward to move the forward end of the outer protrusion 4 forward, and at the same time, the forward end of the outer protrusion 4 moves from above the head end of the inner protrusion 3 to above the tail end. During the disassembly process, the filter bottle 2 rotates reversely to move the rearward end of the outer protrusion 4 backward, and at the same time, the forward end of the outer protrusion 4 moves from above the tail end of the inner protrusion 3 to above the head end.

[0035] In order to prevent the filter bottle 2 from rotating excessively and causing the inner protrusion 3 and the outer protrusion 4 to be misaligned again, a limiting rib 41 can be provided below the rear end of the outer protrusion 4. When the filter bottle 2 rotates forward, the forward end of the outer protrusion 4 moves forward. At the same time, the forward end of the outer protrusion 4 moves from above the head end of the inner protrusion 3 to above the rear end. The limiting rib 41 moves synchronously. Relatively, the head end of the inner protrusion 3 moves from below the forward end of the outer protrusion 4 to below the rear end. That is, when the outer protrusion 4 moves to the upper limit position of the inner protrusion 3, the limiting rib 41 abuts against the head end of the inner protrusion 3, limiting the filter bottle 2 from continuing to rotate forward, thereby realizing circumferential forward rotation limit.

[0036] Furthermore, a vertical positioning groove 31 is provided at the front end of the side of the inner protrusion 3, and a positioning rib 42 is provided below the rear end of the outer protrusion 4. The positioning rib 42 is located in front of the limiting rib 41. During installation, the forward end of the outer protrusion 4 moves from above the front end of the inner protrusion 3 to above the rear end, and the positioning rib 42 moves synchronously. When the outer protrusion 4 moves to the upper limit position of the inner protrusion 3, the positioning rib 42 engages in the positioning groove 31, restricting the reverse rotation of the filter bottle 2 and limiting the reverse rotation of the filter bottle 2 in the circumferential direction, preventing the filter bottle 2 from easily rotating in the reverse direction and disengaging. Of course, when disassembly is required, a slightly greater force is applied to rotate the filter bottle 2 in the reverse direction, so that the positioning rib 42 disengages the positioning groove 31, and the filter bottle 2 can continue to rotate in the reverse direction for subsequent disassembly.

[0037] To facilitate installation, the forward end of the outer projection 4 is provided with an outer guiding bevel 43 that slopes backward from top to bottom. The forward end of the inner projection 3 is provided with an inner guiding bevel 32 that slopes backward from bottom to top. The positioning rib 41 is tilted in the same direction as the inner guiding bevel 32. During installation, the outer guiding bevel 43 and the inner guiding bevel 32 make contact. These two bevels facilitate the forward rotation of the filter bottle 2 and provide a smooth transition between the corners of the positioning groove 31 and the positioning rib 42.

[0038] In the snap-on prefilter provided in a specific embodiment of the present invention, four evenly spaced inner protrusions 3 and four outer protrusions 4 can be provided. Before installation, the outer protrusions 4 are staggered with the inner protrusions 3. During insertion, the outer protrusions 4 pass through the gaps between adjacent inner protrusions 3. During removal, the outer protrusions 4 still exit through the gaps between adjacent inner protrusions 3. Limiting ribs 41 and positioning ribs 42 can be provided below some or all of the outer protrusions 4. The number of inner and outer protrusions 3 and 4 can also be adjusted as needed. Furthermore, the inner protrusions 3 can be a unitary block structure with positioning grooves 31 machined on its surface. The inner protrusions 3 can also be a hollow frame structure with grooves machined on the edge of the frame. The grooves on the upper and lower edges are arranged correspondingly to form positioning grooves 31. All of these are within the scope of protection of the present invention.

[0039] In order to improve the sealing between the filter bottle 2 and the valve head 1, a sealing groove 21 surrounding the filter bottle 2 is provided on the outer side of the upper end of the filter bottle 2. A sealing ring 8 is installed in the sealing groove 21. The sealing groove 21 is located above the outer protrusion 4. A dustproof groove can also be provided. The dustproof groove is located below the outer protrusion 4. A dustproof ring is installed in the dustproof groove. The upper end of the filter bottle 2 is inserted into the cylinder wall. The sealing ring 8 and the dustproof ring contact the inner side of the cylinder wall. The sealing ring 8 fills the gap between the filter bottle 2 and the valve head 1 to prevent water from leaking. Two vertically arranged sealing grooves 21 can also be provided. The provision of two sealing rings 8 increases reliability. The dustproof ring is a V-shaped silicone ring located at the opening at the lower end of the cylinder wall to prevent dust from entering the interior of the device. Furthermore, an annular platform is provided near the upper end of the outer wall of the filter bottle 2. After installation, the lower end face of the valve head 1 abuts against the upper end face of the annular platform.

[0040] Please refer to Figure 7 and Figure 8 , Figure 7 A schematic diagram of the filtering state of a specific embodiment of the clip-on pre-filter provided by the present invention; Figure 8 This is a schematic diagram of the sewage discharge state of a specific embodiment of the clip-on pre-filter provided by the utility model.

[0041] In the snap-on pre-filter provided by the specific embodiment of the present invention, a filter element assembly 5 is provided in the filter bottle 2. During the use of the filter element assembly, when in the filtering state, the drain valve 7 is closed, and the lower end of the filter bottle 2 is in a closed state. Unfiltered water enters the filter bottle 2 from the water inlet joint, flows in the gap between the filter bottle 2 and the filter element assembly 5, enters the middle through hole of the filter element assembly 5 after being filtered by the filter element assembly 5, and then is discharged from the water outlet joint. Furthermore, a pressure gauge is provided on the inner shell of the valve head 1, and scale-inhibiting filter material is placed inside the device to prevent scaling. In the sewage discharge state, the drain valve 7 is opened, and the lower end of the filter bottle 2 is in an open state. Water enters the filter bottle 2 from the water inlet joint, flushes the filter element assembly 5, and reaches the lower end of the filter bottle 2. The internal impurities are discharged together with the water flow through the drain valve 7 at the lower end. After cleaning is completed, the drain valve 7 is closed again.

[0042] Based on the snap-on pre-filters provided in the above-mentioned embodiments, the valve head 1 and the filter bottle 2 are connected by snap-on connection, which is less stable than the traditional threaded connection. Therefore, an upper snap is provided on the outside of the cylinder wall, and a lower snap is provided at a corresponding position on the outside of the filter bottle 2. After the filter bottle 2 and the valve head 1 are installed, the upper snap engages with the lower snap, ensuring a stable connection between the filter bottle 2 and the valve head 1. When disassembling, the upper snap and the lower snap are first separated before proceeding with the subsequent disassembly. Specifically, the upper snap and the lower snap can adopt a flip buckle and buckle fixed hook structure, or a flip buckle hook and fixed hook structure, both of which are within the scope of protection of the present invention.

[0043] In addition to the above-mentioned snap-on pre-filter, the specific embodiment of the present invention also provides a water purification device including the above-mentioned snap-on pre-filter. For the structures of other parts of the water purification device, please refer to the prior art and will not be described in detail herein.

[0044] The above describes in detail the snap-on pre-filter and water purification device provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A snap-on pre-filter, characterized in that: The invention comprises a valve head (1) and a filter bottle (2) installed at the lower end of the valve head (1); the outer periphery of the valve head (1) is provided with a downwardly extending cylindrical wall, the inner side of the cylindrical wall is provided with an inner convex block (3), and the outer side of the upper end of the filter bottle (2) is provided with an outer convex block (4); before installation, the inner convex block (3) and the outer convex block (4) are staggered; during installation, the upper end of the filter bottle (2) is inserted into the cylindrical wall and the filter bottle (2) is rotated so that the outer convex block (4) moves above the inner convex block (3).

2. The snap-on pre-filter according to claim 1, characterized in that: A limiting rib (41) is provided below the rearward end of the outer convex block (4); when the outer convex block (4) moves to above the inner convex block (3), the limiting rib (41) abuts against the front end of the inner convex block (3).

3. The snap-on pre-filter according to claim 2, characterized in that: A positioning groove (31) is provided at the front end of the side surface of the inner convex block (3), and a positioning rib (42) is provided below the rear end of the outer convex block (4). The positioning rib (42) is located in front of the limiting rib (41). When the outer convex block (4) moves to above the inner convex block (3), the positioning rib (42) is inserted into the positioning groove (31).

4. The snap-on pre-filter according to claim 3, characterized in that: The forward end of the outer convex block (4) is provided with an outer guide inclined surface (43) tilted backward from top to bottom, the front end of the inner convex block (3) is provided with an inner guide inclined surface (32) tilted backward from bottom to top, and the limiting rib (41) is tilted and has the same tilt direction as the inner guide inclined surface (32).

5. The snap-on pre-filter according to claim 4, characterized in that: The positioning groove (31) and the positioning rib (42) have a smooth transition at their corners.

6. The snap-on pre-filter according to claim 1, characterized in that: It comprises four inner convex blocks (3) and four outer convex blocks (4) that are evenly arranged.

7. The snap-on pre-filter according to claim 1, characterized in that: A sealing groove (21) surrounding the filter bottle (2) is provided on the outer side of the upper end of the filter bottle (2), and a sealing ring (9) is installed in the sealing groove (21) and is located above the outer protrusion (4).

8. The snap-on pre-filter according to claim 7, characterized in that: A filter element assembly (5) is provided in the filter bottle (2), a water inlet joint and a water outlet joint extending to both sides are provided at the upper end of the valve head (1), and a sewage valve (7) is connected to the lower end of the filter bottle (2) via a sealing member (6).

9. The snap-on pre-filter according to any one of claims 1 to 8, characterized in that: An upper buckle is provided on the outer side of the cylinder wall, and a lower buckle is provided on the corresponding position on the outer side of the filter bottle (2). After the filter bottle (2) and the valve head (1) are installed, the upper buckle is buckled with the lower buckle.

10. A water purification device, characterized in that: It comprises the snap-on pre-filter according to any one of claims 1 to 9.

Images