Faucet water purifier

Abstract

The utility model discloses a faucet water purifier which comprises a waterway switching assembly and a filtering assembly, the filtering assembly comprises a shell with a filtering cavity and a filter element arranged in the filtering cavity, the top of the shell is provided with an exhaust hole used for exhausting gas in the filtering cavity, and the shell is further provided with a floating ball valve located in the filtering cavity. And when the water level in the filtering cavity reaches the highest water level, the ball float valve closes the exhaust hole under the action of buoyancy. The exhaust hole is formed in the top of the shell of the filtering assembly, and the floating ball valve is arranged in the filtering cavity, so that when the water level in the filtering cavity does not reach the highest water level, the floating ball valve is in a state of opening the exhaust hole, and gas above the liquid level is prevented from being compressed under the action of continuously rising liquid level pressure; therefore, when the filter assembly does not discharge purified water, the compressed gas above the liquid level of the filter cavity is prevented from extruding residual liquid in the filter cavity out of the filter cavity, water leakage of a water outlet below the filter assembly is prevented, and the use experience of a user is good.

Description

Technical Field

[0001] The utility model belongs to the field of water purification equipment, and specifically relates to a tap water purifier. Background Art

[0002] The faucet water purifier is a kind of water purifier directly installed on the faucet. It consists of a water channel switching component for switching the water channel and a filter component for purifying tap water. The filter component is provided with a filter element, which plays the role of filtering the water quality and filtering out the sediment, residual chlorine and other substances in the water. At the same time, the filter element also has a certain blocking effect on the air. During use, the air in the filter component will be trapped between the outer shell of the filter component and the filter element. When the water level in the filter element component rises, the air above the water surface is compressed. When the faucet is closed or switched to the raw water mode, the compressed air will squeeze out the remaining water in the filter component, resulting in the filter component continuing to discharge water for a period of time after the faucet is closed or the water channel is switched, which makes the user misjudge that there is a water leak and the user experience is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a faucet water purifier to solve at least one of the above problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a faucet water purifier, including a water channel switching component and a filter component, the filter component includes a shell with a filter cavity and a filter element arranged in the filter cavity, the top of the shell is provided with an exhaust hole for discharging the gas in the filter cavity, and the shell is also provided with a float valve located in the filter cavity. When the water level in the filter cavity reaches the highest water level, the float valve closes the exhaust hole under the action of buoyancy.

[0005] In the above-mentioned faucet water purifier, the float valve includes a valve body with an exhaust channel and a float arranged in the exhaust channel. The filter chamber and the exhaust hole are connected through the exhaust channel. When the water level in the filter chamber rises to the highest water level, the float rises along the exhaust channel and closes the exhaust channel.

[0006] In the above-mentioned faucet water purifier, the air outlet of the exhaust channel is arranged at the top of the valve body, the inner diameter of the air outlet is smaller than the outer diameter of the float, and the float closes the exhaust channel by closing the air outlet.

[0007] In the above-mentioned faucet water purifier, the air inlet of the exhaust channel includes a first air inlet hole arranged on the side wall of the valve body, and the first air inlet hole is a strip hole that extends vertically on the valve body to connect the filter chamber and the exhaust channel.

[0008] In the above-mentioned faucet water purifier, the air inlet of the exhaust channel further includes a plurality of second air inlet holes, and the plurality of second air inlet holes are arranged at the bottom of the valve body.

[0009] In the above-mentioned faucet water purifier, a water inlet hole coaxially arranged with the float is further provided at the bottom of the valve body, the inner diameter of the water inlet hole is smaller than the outer diameter of the float, and a plurality of second air inlet holes are arranged around the water inlet hole.

[0010] In the above-mentioned faucet water purifier, the valve body includes a cylinder body that encloses an exhaust channel, a sealing member arranged in the cylinder body, and a bottom cover detachably connected to the bottom of the cylinder body. The cylinder body and the outer shell are an integral structure, the sealing member is arranged at the top of the exhaust channel, and the air outlet of the exhaust channel is arranged on the sealing member.

[0011] In the above-mentioned faucet water purifier, a sealing protrusion is provided on the outer shell, a sealing groove is provided on the top of the sealing element, and the sealing protrusion is plugged into the sealing groove.

[0012] In the above-mentioned faucet water purifier, a limiting step is provided on the inner wall of the cylinder, the outer peripheral side of the sealing member abuts against the inner wall of the cylinder, and the bottom surface of the sealing member abuts against the top surface of the limiting step.

[0013] In the above-mentioned faucet water purifier, a guide curved surface is provided at the bottom of the sealing member and is arranged around the air outlet of the exhaust channel. When the float closes the air outlet, the top of the float fits with the guide curved surface.

[0014] The beneficial effects of the utility model are:

[0015] A faucet water purifier includes a waterway switching component and a filter component. The filter component includes a housing with a filter cavity and a filter element arranged in the filter cavity. The top of the housing is provided with an exhaust hole for exhausting the gas in the filter cavity. The housing is also provided with a float valve located in the filter cavity. When the water level in the filter cavity reaches the highest water level, the float valve closes the exhaust hole under the action of buoyancy. The technical solution has the following technical effects:

[0016] The utility model provides an exhaust hole on the top of the shell of the filter assembly and a float valve in the filter chamber, so that when the water level in the filter chamber does not reach the maximum water level, the float valve is in a state of opening the exhaust hole. As the water level in the filter chamber gradually rises, the gas above the liquid surface is discharged from the filter chamber through the exhaust hole, thereby preventing the gas above the liquid surface from being compressed under the action of the continuously rising liquid surface pressure. In other words, when the filter assembly does not discharge purified water (that is, the faucet is closed or the faucet water purifier is switched to a mode in which the water channel switching assembly discharges raw water), the compressed gas above the liquid surface in the filter chamber is prevented from squeezing the residual liquid in the filter chamber out of the filter chamber, thereby preventing the water outlet below the filter assembly from leaking. When the water level in the filter chamber reaches the maximum water level, the liquid surface pushes the float valve upward, so that the float valve closes the exhaust hole under the action of buoyancy, thereby preventing the water flow in the filter chamber from flowing out of the filter chamber through the exhaust hole, namely, preventing the top of the filter assembly from leaking, thereby providing a good user experience.

[0017] The float valve includes a valve body with an exhaust channel and a float disposed in the exhaust channel. The filter chamber and the exhaust hole are connected through the exhaust channel. When the water level in the filter chamber rises to the highest water level, the float rises along the exhaust channel and closes the exhaust channel. By setting the float valve to a structure combining the valve body and the float, the movement of the float in the valve body realizes the opening and closing of the exhaust channel in the valve body, and then realizes the opening and closing of the exhaust hole. The structure is simple and reliable.

[0018] The air outlet of the exhaust channel is located at the top of the valve body. The inner diameter of the air outlet is smaller than the outer diameter of the float. The float closes the exhaust channel by closing the air outlet. When the water level in the filter chamber rises to the highest water level, the float just rises to the air outlet. Because the inner diameter of the air outlet is smaller than the outer diameter of the float, the float can just block the air outlet under the action of buoyancy to achieve the closure of the exhaust channel, and the opening and closing effect is good.

[0019] The air inlet of the exhaust channel includes a first air inlet hole provided on the side wall of the valve body. The first air inlet hole is a strip hole extending vertically on the valve body to connect the filter chamber and the exhaust channel. By setting the first air inlet hole as a strip hole, the ventilation effect of the first air inlet hole is good. When the water level in the filter chamber rises to partially submerge the cylinder, the water flow will not completely close the first air inlet hole, ensuring that the gas in the filter chamber can always be discharged through the exhaust hole before the float closes the exhaust hole. At the same time, it is ensured that the water flow in the filter chamber can quickly enter the exhaust channel through the first air inlet hole to push the float to rise.

[0020] The air inlet of the exhaust channel also includes a plurality of second air inlet holes, which are arranged at the bottom of the valve body. The second air inlet holes are arranged at the bottom of the valve body, and can cooperate with the first air inlet holes to increase the air inlet area of ​​the exhaust channel, so that the gas in the filter cavity can quickly enter the exhaust channel, thereby making the exhaust effect of the float valve better.

[0021] The bottom of the valve body is also provided with a water inlet hole coaxially arranged with the float, the inner diameter of the water inlet hole is smaller than the outer diameter of the float, and a plurality of second air inlets are arranged around the water inlet hole. The inner diameter of the water inlet hole is smaller than the outer diameter of the float to prevent the float from freely escaping from the exhaust channel through the water inlet hole. The plurality of second air inlets are arranged around the water inlet hole, so that when the float abuts against the bottom cover at the bottom of the valve body, the bottom of the float is embedded in the water inlet hole, and the float is limited in the horizontal direction through the water inlet hole to prevent the float from blocking the second air inlet hole, thereby ensuring the ventilation effect of the second air inlet hole. By arranging the water inlet hole at the bottom of the valve body, the water flow entering the exhaust channel can push the float upward at the first time, and the water flow in the exhaust channel can also be completely discharged when the water level in the filter chamber drops, thereby avoiding water accumulation in the exhaust channel.

[0022] The valve body includes a cylinder that encloses an exhaust passage, a seal disposed in the cylinder, and a bottom cover that is detachably connected to the bottom of the cylinder. The cylinder and the outer shell are an integrated structure, the seal is disposed at the top of the exhaust passage, and the exhaust outlet of the exhaust passage is disposed on the seal. By integrating the top of the cylinder with the outer shell, the connection between the cylinder and the outer shell is more stable and reliable. During production and processing, there is no need to assemble the cylinder and the outer shell to ensure that the exhaust passage enclosed by the cylinder is aligned with the exhaust hole.

[0023] The outer shell is provided with a sealing protrusion, and the top of the seal is provided with a sealing groove, and the sealing protrusion is plugged into the sealing groove. When the seal is installed in the exhaust passage, the top surface of the seal abuts against the outer shell, and the sealing protrusion is plugged into the sealing groove to enhance the seal between the top surface of the seal and the outer shell, to prevent water from flowing into the exhaust hole from the gap between the seal and the outer shell, and to prevent water leakage from the exhaust hole.

[0024] A limiting step is provided on the inner wall of the cylinder, the outer peripheral side of the seal abuts against the inner wall of the cylinder, and the bottom surface of the seal abuts against the top surface of the limiting step, so as to limit the seal in the vertical direction to prevent the seal from sliding down in the exhaust channel, ensure that the seal abuts against the outer shell, that is, ensure the seal between the seal and the outer shell.

[0025] The bottom of the seal is provided with a guide curved surface arranged around the air outlet of the exhaust channel. When the float closes the air outlet, the top of the float fits with the guide curved surface to increase the contact area between the float and the seal around the air outlet, so that the float has a better sealing effect on the air outlet.

[0026] The features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] Figure 1 It is a three-dimensional diagram of the tap water purifier in the first embodiment;

[0029] Figure 2 is a cross-sectional view of the filter assembly in Example 1;

[0030] Figure 3 It is a schematic diagram of the floating ball valve closing the exhaust hole in the first embodiment;

[0031] Figure 4 It is a schematic diagram of the float valve opening the exhaust hole in the first embodiment;

[0032] Figure 5 The three-dimensional seal of the first embodiment Figure 1 ;

[0033] Figure 6The three-dimensional seal of the first embodiment Figure 2 ;

[0034] Figure 7 is a three-dimensional diagram of the bottom cover in the first embodiment;

[0035] Figure 8 is a three-dimensional diagram of the housing in the first embodiment;

[0036] Fig. 9 for Figure 8 Enlarged view of part A.

[0037] Reference numerals:

[0038] 100. Waterway switching assembly;

[0039] 200, filtering component;

[0040] 300, housing; 310, exhaust hole; 320, sealing protrusion; 330, filter chamber;

[0041] 400, filter element;

[0042] 500, float valve;

[0043] 600, Float;

[0044] 700, valve body; 710, cylinder; 711, limiting step; 712, clamping groove; 720, sealing member; 721, guide curved surface; 722, sealing groove; 730, bottom cover; 731, clamping protrusion; 732, water inlet hole;

[0045] 800, exhaust channel; 810, air outlet; 821, first air inlet; 822, second air inlet. DETAILED DESCRIPTION

[0046] The utility model provides a faucet water purifier, comprising a waterway switching component and a filter component, the filter component comprising a shell with a filter cavity and a filter element arranged in the filter cavity, the top of the shell is provided with an exhaust hole for discharging the gas in the filter cavity, the shell is also provided with a float valve located in the filter cavity, when the water level in the filter cavity reaches the highest water level, the float valve closes the exhaust hole under the action of buoyancy. The utility model provides an exhaust hole on the top of the shell of the filter assembly and a float valve in the filter chamber, so that when the water level in the filter chamber does not reach the maximum water level, the float valve is in a state of opening the exhaust hole. As the water level in the filter chamber gradually rises, the gas above the liquid surface is discharged from the filter chamber through the exhaust hole, thereby preventing the gas above the liquid surface from being compressed under the action of the continuously rising liquid surface pressure. In other words, when the filter assembly does not discharge purified water (that is, the faucet is closed or the faucet water purifier is switched to a mode in which the water channel switching assembly discharges raw water), the compressed gas above the liquid surface in the filter chamber is prevented from squeezing the residual liquid in the filter chamber out of the filter chamber, thereby preventing the water outlet below the filter assembly from leaking. When the water level in the filter chamber reaches the maximum water level, the liquid surface pushes the float valve upward, so that the float valve closes the exhaust hole under the action of buoyancy, thereby preventing the water flow in the filter chamber from flowing out of the filter chamber through the exhaust hole, namely, preventing the top of the filter assembly from leaking, thereby providing a good user experience.

[0047] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] Embodiment 1:

[0053] A tap water purifier, such as Figures 1 to 9 As shown, it includes a waterway switching component 100 and a filter component 200. The sides of the waterway switching component 100 and the filter component 200 are connected. The waterway switching component 100 is connected to the faucet to directly discharge the raw water in the faucet (i.e., unfiltered tap water) or switch the water flow to the filter component 200 for filtering, so that the filter component 200 discharges clean water (filtered tap water). The filter component 200 includes a housing 300 and a filter element 400. The housing 300 has a filter chamber 330 inside. The filter element 400 is arranged in the filter chamber 330 to filter the water flow. An exhaust hole 310 is arranged on the top of the housing 300. When the water level in the filter chamber 330 rises, the exhaust hole 310 is used to discharge the gas in the filter chamber 330. A float valve 500 is also arranged on the housing 300. The float valve 500 is located in the filter chamber 330 above the filter element 400 to open and close the exhaust hole 310.

[0054] The utility model provides an exhaust hole 310 at the top of the housing 300 of the filter assembly 200, and a float valve 500 in the filter chamber 330, so that when the water level in the filter chamber 330 does not reach the highest water level, the float valve 500 is in a state of opening the exhaust hole 310. As the water level in the filter chamber 330 gradually rises, the gas above the liquid surface is discharged from the filter chamber 330 through the exhaust hole 310, thereby preventing the gas above the liquid surface from being compressed under the pressure of the continuously rising liquid surface, and thus the filter assembly 200 does not discharge purified water (i.e., the faucet is closed or the faucet water purifier is switched on). 330), to prevent the compressed gas above the liquid surface of the filter chamber 330 from squeezing the residual liquid in the filter chamber 330 out of the filter chamber 330, and to prevent water leakage at the water outlet below the filter assembly 200; when the water level in the filter chamber 330 reaches the highest water level, the liquid surface pushes the float valve 500 upward, so that the float valve 500 closes the exhaust hole 310 under the action of buoyancy, to prevent the water flow in the filter chamber 330 from flowing out of the filter chamber 330 through the exhaust hole 310, that is, to prevent water leakage from the top of the filter assembly 200, so that the user experience is good.

[0055] In this embodiment, the float valve 500 includes a valve body 700 and a float 600. The valve body 700 is provided with an exhaust channel 800, and the exhaust channel 800 is aligned with the exhaust hole 310. The float 600 is arranged in the exhaust channel 800. The float 600 has an open position and a closed position in the exhaust channel 800. When the liquid level does not contact the float 600, the float 600 in the exhaust channel 800 is in the open position. At this time, the filter chamber 330 is connected with the exhaust hole 310 through the exhaust channel 800; when the liquid level rises to contact the float 600, the float 600 moves upward in the exhaust channel 800 as the liquid level rises, until the liquid level rises to the highest water level, and the float 600 moves to the closed position. At this time, the float 600 blocks the exhaust channel 800, so that the water flow in the filter chamber 330 will not enter the exhaust hole 310 through the exhaust channel 800, thereby preventing the exhaust hole 310 from leaking. The float valve 500 is configured as a structure in which a valve body 700 and a float 600 are combined. The movement of the float 600 in the valve body 700 realizes the opening and closing of the exhaust passage 800 in the valve body 700, thereby realizing the opening and closing of the exhaust hole 310. The structure is simple and reliable.

[0056] like Figure 2As shown, the valve body 700 in this embodiment is arranged on the shell, and the air outlet 810 of the exhaust channel 800 is located at the top of the valve body 700 and is aligned with the exhaust hole 310 on the shell 300. The inner diameter of the air outlet 810 is smaller than the outer diameter of the float 600. When the water level in the filter chamber 330 rises to the highest water level, the float 600 just rises to the air outlet 810. Because the inner diameter of the air outlet 810 is smaller than the outer diameter of the float 600, the float 600 can just block the air outlet 810 under the action of buoyancy to achieve the closure of the exhaust channel 800.

[0057] In this embodiment, the valve body 700 includes a cylinder 710, a sealing member 720 and a bottom cover 730. The cylinder 710, the sealing member 720 and the bottom cover 730 are split structures. The cylinder 710 is hollow. The top of the cylinder 710 is fixed on the outer shell 300 and is an integral structure with the outer shell 300. The cylinder 710 is arranged around the exhaust hole 310 to form an exhaust channel 800 connected to the exhaust hole 310. By integrally arranging the top of the cylinder 710 with the outer shell 300, the connection between the cylinder 710 and the outer shell 300 is more stable and reliable. During production and processing, there is no need to assemble the cylinder 710 and the outer shell 300 to ensure that the exhaust channel 800 surrounded by the cylinder 710 is aligned with the exhaust hole 310.

[0058] The seal 720 is arranged in the exhaust channel 800 of the cylinder 710, and the seal 720 covers the top of the exhaust channel 800. The air outlet 810 of the exhaust channel 800 is arranged on the seal 720. The inner diameter of the air outlet 810 is the same as the exhaust hole 310, and the two overlap in the horizontal direction. When the float 600 does not close the air outlet 810, the aligned air outlet 810 and the exhaust hole 310 can ensure smooth communication between the exhaust channel 800 and the exhaust hole 310, and the exhaust effect is good. Preferably, a guide curved surface 721 is provided at the bottom of the sealing member 720, and the guide curved surface 721 is arranged around the air outlet 810 of the exhaust passage 800. When the float 600 closes the air outlet 810, the top of the float 600 fits against the guide curved surface 721 to increase the contact area between the float 600 and the sealing member 720 around the air outlet 810, so that the float 600 has a better sealing effect on the air outlet 810. At the same time, when the inner diameter of the exhaust passage 800 is larger than the outer diameter of the float 600, the guide curved surface 721 can guide the float 600 moving horizontally during the rising process to guide the float 600 to move to the position of closing the air outlet 810, thereby ensuring that the float 600 can stably close the air outlet 810.

[0059] like Fig. 9As shown, an annular sealing protrusion 320 extending downward into the exhaust passage 800 is provided on the outer shell 300, and an annular sealing groove 722 is provided on the top of the seal 720. When the seal 720 is installed in the exhaust passage 800, the outer peripheral side of the seal 720 abuts against the cylinder 710, the top surface of the seal 720 abuts against the outer shell 300, and the sealing protrusion 320 is plugged into the sealing groove 722 to enhance the seal between the top surface of the seal 720 and the outer shell 300, to prevent water from flowing into the exhaust hole 310 from the gap between the seal 720 and the outer shell 300, and to prevent the exhaust hole 310 from leaking. In this embodiment, a limiting step 711 is provided on the inner wall of the cylinder 710, and the bottom surface of the sealing member 720 abuts against the top surface of the limiting step 711 to limit the sealing member 720 in the vertical direction, thereby preventing the sealing member 720 from sliding down in the exhaust passage 800, and ensuring that the sealing member 720 abuts against the outer shell 300, that is, ensuring the seal between the sealing member 720 and the outer shell 300.

[0060] The bottom cover 730 is detachably connected to the bottom of the cylinder 710 to cover the bottom of the exhaust channel 800. The float 600 is arranged in the exhaust channel 800 between the seal 720 and the bottom cover 730. The float 600 can move up and down in the exhaust channel 800. When the liquid level in the filter chamber 330 reaches the highest water level, the float 600 rises to abut against the bottom of the seal 720 to close the air outlet 810 on the seal 720, so that water does not flow into the exhaust hole 310 from the exhaust channel 800. By setting the air outlet 810 of the exhaust channel 800 on the seal 720, the float 600 can squeeze the seal 720 while closing the air outlet 810. Pressure sealing, that is, the float 600 has a good sealing effect on the air outlet 810 on the seal 720, preventing water from seeping into the abutment between the float 600 and the seal 720; when the liquid level in the filter chamber 330 is lower than the cylinder 710, the bottom of the float 600 abuts against the bottom cover 730, so that the float 600 is limited in the vertical direction by the bottom cover 730 to prevent the float 600 from freely escaping downward from the exhaust channel 800. By setting the bottom cover 730 as a detachable connection structure, when the float valve 500 fails, it only needs to remove the bottom cover 730 from the cylinder 710 to clean and repair the valve body 700 and the float 600 inside it, thereby reducing the difficulty of cleaning and maintenance.

[0061] like Figure 8 and Fig. 9As shown, in this embodiment, the air inlet of the exhaust channel 800 includes a first air inlet hole 821 and a second air inlet hole 822. The first air inlet hole 821 is a strip hole, which extends vertically on the cylinder 710. The left and right sides of the strip hole are respectively connected to the filter chamber 330 and the exhaust channel 800, so that the ventilation effect of the first air inlet hole 821 is good. When the water level in the filter chamber 330 rises to partially submerge the cylinder 710, the water flow will not completely close the first air inlet hole 821, ensuring that the gas in the filter chamber 330 can always be discharged through the exhaust hole 310 before the float 600 closes the exhaust hole 310. At the same time, it is ensured that the water flow in the filter chamber 330 can quickly enter the exhaust channel 800 through the first air inlet hole 821 to push the float 600 to rise. Preferably, there are multiple strip holes, and the multiple strip holes are arranged in parallel on the side wall of the cylinder 710, so that the ventilation effect of the first air inlet hole 821 is better. The second air inlet hole 822 is arranged on the bottom cover 730 at the bottom of the valve body 700, and can cooperate with the first air inlet hole 821 to increase the air inlet area of ​​the exhaust channel 800, so that the gas in the filter cavity 330 can quickly enter the exhaust channel 800, thereby making the exhaust effect of the float valve 500 better. Preferably, a plurality of second air inlet holes 822 are provided.

[0062] In this embodiment, an annular clamping protrusion 731 is provided on the bottom cover 730, and an annular clamping groove 712 is provided on the outer wall of the cylinder 710. The clamping protrusion 731 is clamped in the clamping groove 712 to fix the bottom cover 730 to the bottom of the cylinder 710. Preferably, the first air inlet 821 is arranged through the bottom of the cylinder 710, so that the bottom of the cylinder 710 can be bent into the exhaust passage 800 to deform when the bottom cover 730 is installed, so as to facilitate the installation and fixation of the bottom cover 730.

[0063] In order to quickly guide the water flow into the exhaust channel 800 when the water flow in the filter chamber 330 rises, so as to push the float 600 to move, Figure 7As shown, in this embodiment, a water inlet hole 732 is provided on the bottom cover 730. The water inlet hole 732 is coaxially arranged with the float 600. The inner diameter of the water inlet hole 732 is smaller than the outer diameter of the float 600 to prevent the float 600 from freely escaping from the exhaust channel 800 through the water inlet hole 732. A plurality of second air inlet holes 822 are arranged around the water inlet hole 732, and the inner diameters are all smaller than the outer diameter of the float 600, so that when the float 600 abuts against the bottom cover 730 at the bottom of the valve body 700, the bottom of the float 600 is embedded in the water inlet hole 732, and the float 600 is limited in the horizontal direction by the water inlet hole 732 to prevent the float 600 from moving horizontally and blocking the second air inlet hole 822, thereby ensuring the ventilation effect of the second air inlet hole 822. By setting the water inlet hole 732 on the bottom cover 730 at the bottom of the valve body 700, the water flow entering the exhaust channel 800 can push the float 600 upward at the first time, and when the water level in the filter chamber 330 drops, the water flow in the exhaust channel 800 can be completely discharged to avoid water accumulation in the exhaust channel 800.

[0064] Embodiment 2:

[0065] The difference between this embodiment and embodiment 1 is that, in this embodiment, the float valve includes a float and a connecting rod, one end of the connecting rod is rotatably connected to the inner wall of the shell, and the other end is connected to the float. The float can drive the connecting rod to swing under the action of buoyancy. When the water level in the filter chamber rises to the highest water level, the float just rises to the lower end of the exhaust hole under the action of buoyancy to close the exhaust hole, so as to prevent the water in the filter chamber from flowing out of the exhaust hole. The structure is simple and reliable.

[0066] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A tap water purifier, comprising a waterway switching assembly and a filter assembly, wherein the filter assembly comprises a housing having a filter cavity and a filter element disposed in the filter cavity, characterized in that: The top of the shell is provided with an exhaust hole for exhausting the gas in the filter cavity. The shell is also provided with a float valve located in the filter cavity. When the water level in the filter cavity reaches the highest water level, the float valve closes the exhaust hole under the action of buoyancy.

2. A tap water purifier according to claim 1, characterized in that: The float valve includes a valve body having an exhaust channel and a float arranged in the exhaust channel. The filter chamber and the exhaust hole are connected through the exhaust channel. When the water level in the filter chamber rises to the highest water level, the float rises along the exhaust channel and closes the exhaust channel.

3. A tap water purifier according to claim 2, characterized in that: The air outlet of the exhaust channel is arranged at the top of the valve body, the inner diameter of the air outlet is smaller than the outer diameter of the float, and the float closes the exhaust channel by closing the air outlet.

4. A tap water purifier according to claim 2, characterized in that: The air inlet of the exhaust channel comprises a first air inlet hole provided on the side wall of the valve body, wherein the first air inlet hole is a strip hole extending vertically on the valve body to connect the filter cavity and the exhaust channel.

5. A tap water purifier according to claim 4, characterized in that: The air inlet of the exhaust channel further comprises a plurality of second air inlet holes, and the plurality of second air inlet holes are arranged at the bottom of the valve body.

6. A tap water purifier according to claim 5, characterized in that: The bottom of the valve body is also provided with a water inlet hole coaxially arranged with the float, the inner diameter of the water inlet hole is smaller than the outer diameter of the float, and a plurality of second air inlet holes are arranged around the water inlet hole.

7. A tap water purifier according to any one of claims 2 to 6, characterized in that: The valve body includes a cylinder body that surrounds the exhaust channel, a sealing member arranged in the cylinder body, and a bottom cover detachably connected to the bottom of the cylinder body. The cylinder body and the outer shell are an integral structure. The sealing member is arranged at the top of the exhaust channel, and the air outlet of the exhaust channel is arranged on the sealing member.

8. A tap water purifier according to claim 7, characterized in that: The shell is provided with a sealing protrusion, the top of the sealing element is provided with a sealing groove, and the sealing protrusion is plugged into the sealing groove.

9. A tap water purifier according to claim 7, characterized in that: A limiting step is provided on the inner wall of the cylinder, the outer peripheral side of the sealing member abuts against the inner wall of the cylinder, and the bottom surface of the sealing member abuts against the top surface of the limiting step.

10. A tap water purifier according to claim 7, characterized in that: The bottom of the sealing member is provided with a guide curved surface which is arranged around the air outlet of the exhaust passage. When the float closes the air outlet, the top of the float fits with the guide curved surface.

Images