Filter element for a non-pressure water dispenser

Abstract

The utility model belongs to filter core technical field, specifically is a kind of pressureless water dispenser filter core, including filter drum, the water inlet pipe is connected in the top of filter drum, the water outlet pipe is connected in the bottom of filter drum, filter assembly is equipped in filter drum, fixed plate is fixedly connected in the water outlet pipe, multiple water outlets are set up in fixed plate, support rod is slidably connected in the middle part of fixed plate, the top of support rod is fixedly connected with pressing plate, spring is jointly installed on the pressing plate and water outlet, the outside of filter drum is equipped with protection assembly, gripping assembly is equipped on the water inlet pipe, sealing assembly is equipped in the bottom of pressing plate, by above-mentioned structure, filter drum, water inlet pipe, water outlet pipe cooperate support rod, pressing plate, spring and filter assembly in filter drum, water can be filtered under the action of gravity, thereby reducing the situation that water needs to be filtered in filter drum by producing certain pressure in prior art, leading to deformation or even breakage due to continuous pressure of filter drum.

Description

Technical Field

[0001] This utility model belongs to the field of filter technology, specifically a pressureless water dispenser filter. Background Technology

[0002] Water dispenser filter cartridges are the core components in water dispensers used to filter impurities. They filter large and small particles such as rust, sediment, bacteria, viruses, and colloids through physical interception and adsorption, thereby purifying the water and ensuring drinking water safety.

[0003] The physical interception method is based on the porous structure of the filter element. When water flows through the pores of the filter element, pollutants are filtered and adsorbed in the pores. However, existing filter elements usually require the water to be pressurized inside the filter cartridge to continuously squeeze the water towards the filter element for filtration. The filter cartridge is generally made of plastic. When the filter cartridge is subjected to continuous pressure, it will cause the filter cartridge to deform or even break.

[0004] Therefore, this utility model provides a pressureless water dispenser filter element. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and solve the problem mentioned in the background technology that the filter cartridge will deform or even break when it is subjected to continuous pressure, a pressureless water dispenser filter cartridge is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pressureless water dispenser filter element of this utility model includes a filter cartridge, an inlet pipe connected to the top of the filter cartridge, an outlet pipe connected to the bottom of the filter cartridge, a filter assembly inside the filter cartridge, a fixing plate fixedly connected inside the outlet pipe, multiple water outlets on the fixing plate, a support rod slidably connected to the middle of the fixing plate, a pressure plate fixedly connected to the top of the support rod, a spring installed on the pressure plate and the water outlets, a protective assembly outside the filter cartridge, a gripping assembly on the inlet pipe, and a sealing assembly at the bottom of the pressure plate. Through the above structure, the filter cartridge, inlet pipe, outlet pipe, support rod, pressure plate, spring, and filter assembly inside the filter cartridge can filter water under its own gravity, thereby reducing the situation in the prior art where water needs to be pressurized inside the filter cartridge for filtration, which leads to continuous pressure on the filter cartridge causing deformation or even damage.

[0007] Preferably, the protective component includes a housing, which is fitted over the outside of the filter cartridge. A cover is threadedly connected to the top of the housing. With the above structure, the housing covering the outside of the filter cartridge can protect the filter cartridge. The threaded fit between the cover and the housing facilitates the periodic replacement of the internal filter cartridge.

[0008] Preferably, the filter assembly includes multiple sets of support seats, which are uniformly fixed to the inner wall of the filter cartridge. A filter module is fixed to the top of the support seat. The pore size of the multiple filter modules gradually decreases from top to bottom. Through the above structure, multiple sets of filter modules with different pore sizes can filter particles of different sizes in the water step by step, thereby improving the overall filtration effect of the water.

[0009] Preferably, a pair of positioning grooves are symmetrically provided on the side wall of the filter cartridge, and a pair of positioning protrusions are symmetrically provided on the inner side wall of the outer shell. With the above structure, the positioning grooves and positioning protrusions can be used to fix the filter cartridge in the outer shell, thereby reducing the rotation of the filter cartridge in the outer shell.

[0010] Preferably, the gripping assembly includes a retaining ring, which is fixed to the side wall of the water inlet pipe. With the above structure, when the filter cartridge is taken out of the housing, the retaining ring can provide the operator with a position to apply force, making it convenient for the user to grip.

[0011] Preferably, the sidewall of the cover is provided with a plurality of protrusions, which are evenly distributed in a circumferential array on the cover. With the above structure, the protrusions are located on the outside of the cover, which can increase the friction between the cover and the operator's hand, thereby improving the stability when rotating the cover.

[0012] Preferably, the sealing assembly includes a rubber gasket, which is fixed to the bottom of the pressure plate. Through the above structure, the rubber gasket connects to the pressure plate and can seal the connection between the pressure plate and the filter cartridge, thereby improving the sealing effect on the water flow.

[0013] The beneficial effects of this utility model are as follows: 1. The pressureless water dispenser filter element of this utility model, through the filter cartridge, water inlet pipe, water outlet pipe, support rod, pressure plate, spring and filter components inside the filter cartridge, allows water to be filtered under its own gravity, thereby reducing the need for water to be under certain pressure inside the filter cartridge for filtration in the prior art, which leads to the filter cartridge being continuously pressured and causing deformation or even damage.

[0014] 2. The pressureless water dispenser filter element of this utility model can filter particles of different sizes in the water step by step through multiple sets of filter modules with different pore sizes, thereby improving the overall filtration effect of the water. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the fit between the outer shell and the filter cartridge in this utility model; Figure 3This is a cross-sectional view of the filter cartridge in this utility model; Figure 4 This is a schematic diagram of the cooperation structure between the pressure plate and the water outlet pipe in this utility model; Figure 5 This is a schematic diagram of the cooperation structure between the water inlet pipe and the fixing ring in this utility model.

[0017] Legend: 1. Filter cartridge; 11. Inlet pipe; 12. Outlet pipe; 13. Fixing plate; 14. Outlet; 15. Support rod; 16. Pressure plate; 17. Spring; 2. Outer shell; 21. Shell cover; 3. Support base; 31. Filter module; 4. Positioning groove; 41. Positioning protrusion; 5. Fixing ring; 6. Protrusion; 7. Rubber pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Specific implementation examples are given below.

[0020] like Figures 1 to 4As shown in the embodiment of this utility model, a pressureless water dispenser filter element includes a filter cartridge 1. The top of the filter cartridge 1 is connected to an inlet pipe 11, and the bottom of the filter cartridge 1 is connected to an outlet pipe 12. A filter assembly is provided inside the filter cartridge 1. A fixing plate 13 is fixedly connected inside the outlet pipe 12. Multiple outlets 14 are provided on the fixing plate 13. A support rod 15 is slidably connected to the middle of the fixing plate 13. A pressure plate 16 is fixedly connected to the top of the support rod 15. Springs 17 are installed on both the pressure plate 16 and the outlets 14. A protective assembly is provided on the outside of the filter cartridge 1. A gripping assembly is provided on the inlet pipe 11. A sealing assembly is provided at the bottom of the pressure plate 16. During operation, the entire device is installed vertically. When the support rod 15 is pushed upwards, the spring 17 is stretched, allowing the pressure plate 16 to be lifted. The gap between the pressure plate 16 and the bottom of the filter cartridge 1 creates a water flow channel between the inlet pipe 11, the filter cartridge 1, and the outlet pipe 12. When water enters the filter cartridge 1 from the inlet pipe 11, it passes through the filter assembly inside the filter cartridge 1 under its own weight. The filtered pure water is discharged from the outlet pipe 12 below. After use, the support rod 15 is stopped, and the pressure plate 16 is pulled to hold the outlet pipe 12 by the contraction of the spring 17. At this time, the water can no longer be discharged from the outlet pipe 12. Through the above structure, the filter cartridge 1, the inlet pipe 11, and the outlet pipe 12, together with the support rod 15, the pressure plate 16, the spring 17, and the filter assembly inside the filter cartridge 1, can make water filter under its own weight. This reduces the situation in the prior art where water needs to be subjected to a certain pressure inside the filter cartridge 1 for filtration, which causes the filter cartridge 1 to be continuously pressured and deformed or even damaged.

[0021] like Figure 1 and Figure 2 As shown, the protective assembly includes a housing 2, which is fitted over the outside of the filter cartridge 1. A cover 21 is threadedly connected to the top of the housing 2. During operation, the filter cartridge 1 is inserted into the housing 2 from above, and then the cover 21 is placed on the housing 2 and tightened at the top of the housing 2. At this time, the bottom of the cover 21 can just press against the top of the filter cartridge 1. Through the above structure, the housing 2 covers the outside of the filter cartridge 1 and can protect the filter cartridge 1. The threaded fit between the cover 21 and the housing 2 makes it easy to replace the filter cartridge 1 regularly.

[0022] like Figure 3As shown, the filter assembly includes multiple sets of support bases 3, which are uniformly fixed to the inner wall of the filter cartridge 1. Filter modules 31 are fixed to the top of each support base 3. The pores of the multiple filter modules 31 gradually decrease from top to bottom. During operation, when water flows from the inlet pipe 11 to the outlet pipe 12, it passes through multiple sets of filter modules 31 from top to bottom. At this time, the pores of the top filter module 31 are the largest, and the pores of the bottom filter module 31 are the lowest, thereby achieving multi-stage filtration of impurities of different sizes in the water. Through the above structure, multiple sets of filter modules 31 with different pore sizes can filter particles of different sizes in the water step by step, thereby improving the overall filtration effect of the water.

[0023] like Figure 3 As shown, a pair of positioning grooves 4 are symmetrically provided on the side wall of the filter cartridge 1, and a pair of positioning protrusions 41 are symmetrically provided on the inner side wall of the outer shell 2. During operation, when the filter cartridge 1 is inserted into the outer shell 2, the positioning grooves 4 on both sides of the filter cartridge 1 are aligned with the positioning protrusions 41 on both sides of the outer shell 2. After the filter cartridge 1 is inserted into the outer shell 2, the positioning protrusions 41 will be locked in the positioning grooves 4, thereby fixing the position of the filter cartridge 1. Through the above structure, the positioning grooves 4 and the positioning protrusions 41 can fix the filter cartridge 1 in the outer shell 2, thereby reducing the possibility of the filter cartridge 1 rotating in the outer shell 2.

[0024] like Figure 5 As shown, the gripping assembly includes a fixing ring 5, which is fixed to the side wall of the water inlet pipe 11. During operation, when the filter cartridge 1 is taken out of the housing 2, the operator can grab the fixing ring 5 and pull it upward to remove the filter cartridge 1 from the housing 2. Through the above structure, when the filter cartridge 1 is taken out of the housing 2, the fixing ring 5 can provide the operator with a position to apply force and make it convenient for the user to grip.

[0025] like Figure 1 As shown, the side wall of the cover 21 is provided with a plurality of protrusions 6. The plurality of protrusions 6 are evenly distributed in a circumferential array on the cover 21. During operation, when tightening or loosening the cover 21, the operator's hand will come into contact with the protrusions 6 on the outside of the cover 21. Through the above structure, the protrusions 6 are located on the outside of the cover 21, which can increase the friction between the cover 21 and the operator's hand, thereby improving the stability when rotating the cover 21.

[0026] like Figure 4 As shown, the sealing assembly includes a rubber pad 7, which is fixed to the bottom of the pressure plate 16. During operation, when the pressure plate 16 presses against the bottom of the inner side of the filter cartridge 1, it will squeeze the rubber pad 7 below the pressure plate 16 into contact with the inner wall of the filter cartridge 1. Through the above structure, the rubber pad 7 connects to the pressure plate 16, which can seal the connection between the pressure plate 16 and the filter cartridge 1, thereby improving the sealing effect on the water flow.

[0027] Working principle: The entire device is installed vertically. When the support rod 15 is pushed upwards, the spring 17 is stretched, which lifts the pressure plate 16, creating a gap between the pressure plate 16 and the bottom of the filter cartridge 1. This forms a water flow channel between the inlet pipe 11, the filter cartridge 1, and the outlet pipe 12. When water enters the filter cartridge 1 from the inlet pipe 11, it passes through the filter assembly inside the filter cartridge 1 under its own weight. The filtered pure water is discharged from the outlet pipe 12 below. After use, the support rod 15 is stopped. The spring 17 contracts, causing the pressure plate 16 to lock the outlet pipe 12, preventing water from continuing to drain from the outlet pipe 12. The filter cartridge 1 is then inserted into the outer casing 2 from above. The casing cover 21 is then placed on the outer casing 2 and tightened at the top. At this point, the bottom of the casing cover 21 is pressed against the top of the filter cartridge 1. When water flows from the inlet pipe 11 to the outlet pipe 12, it passes through multiple sets of filter modules 31 from top to bottom. At this time, the filter module 31 at the top has the largest pore size and the filter module 31 at the bottom has the smallest pore size, thereby achieving multi-stage filtration of impurities of different sizes in the water. When the filter cartridge 1 is inserted into the outer shell 2, the positioning grooves 4 on both sides of the filter cartridge 1 are aligned with the positioning protrusions 41 on both sides of the outer shell 2. After the filter cartridge 1 is inserted into the outer shell 2, the positioning protrusions 41 will be locked in the positioning grooves 4, thereby fixing the position of the filter cartridge 1. When the filter cartridge 1 is removed from the outer shell 2, the operator can lift it up by grasping the fixing ring 5. When tightening or loosening the shell cover 21, the operator's hand will come into contact with the protrusion 6 on the outside of the shell cover 21. When the pressure plate 16 is pressed on the bottom of the inner side of the filter cartridge 1, it will squeeze the rubber pad 7 below the pressure plate 16 to contact the inner wall of the filter cartridge 1.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressureless water dispenser filter element, comprising a filter cartridge (1), characterized in that: The filter cartridge (1) is connected to the top of the water inlet pipe (11) and the bottom of the filter cartridge (1) is connected to the water outlet pipe (12). The filter cartridge (1) is equipped with a filter assembly. The water outlet pipe (12) is fixedly connected to a fixing plate (13). The fixing plate (13) is provided with multiple water outlets (14). The middle of the fixing plate (13) is slidably connected to a support rod (15). The top of the support rod (15) is fixedly connected to a pressure plate (16). The pressure plate (16) and the water outlets (14) are both equipped with springs (17). The filter cartridge (1) is equipped with a protective assembly. The water inlet pipe (11) is equipped with a gripping assembly. The bottom of the pressure plate (16) is equipped with a sealing assembly.

2. The pressureless water dispenser filter element according to claim 1, characterized in that: The protective assembly includes a housing (2) which is fitted over the outside of the filter cartridge (1) and a cover (21) is threaded onto the top of the housing (2).

3. The pressureless water dispenser filter element according to claim 1, characterized in that: The filter assembly includes multiple sets of support seats (3), which are uniformly fixed to the inner wall of the filter cartridge (1). A filter module (31) is fixed to the top of the support seat (3), and the pores of the multiple filter modules (31) gradually decrease from top to bottom.

4. A pressureless water dispenser filter element according to claim 2, characterized in that: The filter cartridge (1) has a pair of symmetrically arranged positioning grooves (4) on its side wall, and the outer shell (2) has a pair of symmetrically arranged positioning protrusions (41) on its inner side wall.

5. A pressureless water dispenser filter element according to claim 1, characterized in that: The gripping assembly includes a retaining ring (5) which is fixed to the side wall of the water inlet pipe (11).

6. A pressureless water dispenser filter element according to claim 2, characterized in that: The sidewall of the shell cover (21) is provided with a plurality of protrusions (6), which are evenly distributed in a circular array on the shell cover (21).

7. A pressureless water dispenser filter element according to claim 1, characterized in that: The sealing assembly includes a rubber gasket (7) which is fixed to the bottom of the pressure plate (16).

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