Filtering device

Abstract

The application provides a filtering device, which comprises a mounting base body, a mounting cavity and a mounting port, the mounting base body is provided with a first guide part, and the first guide part is located on the side wall of the mounting cavity; a filter core is detachably arranged in the mounting cavity, and the filter core is provided with a second guide part and a first locking part; the second guide part is located on the outer side wall of the filter core, the second guide part is slidably matched with the first guide part, so as to guide the filter core to move vertically along the mounting cavity during the insertion of the filter core into the mounting cavity; a locking part is rotatably arranged on the mounting base body, and the locking part is provided with a second locking part; the second locking part has a first working position matched with the first locking part and a second working position matched with the first locking part; the locking part is rotated downward to switch the second locking part from the second working position to the first working position; and the locking part is rotated upward to switch the second locking part from the first working position to the second working position. The filtering device can realize the quick and correct insertion of the filter core into the mounting cavity and reliably lock the filter core on the mounting base body, and the installation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and more particularly to a filtration device. Background Technology

[0002] A filtration device is a device that filters and purifies raw water to meet drinking water standards through filter cartridges. The filter cartridges in the filtration device generally have a certain service life, and users need to replace the filter cartridges that have reached the end of their service life periodically. Therefore, the installation structure of the filter cartridges must be easy to disassemble and securely installed.

[0003] Currently, most filtration devices on the market detachably house the filter element within the mounting cavity of the mounting base, and lock the filter element in place using a locking mechanism. However, during the insertion of the filter element into the mounting cavity, it is prone to rotation relative to the cavity, causing it to deviate from its intended position. This necessitates manual rotation to reposition the filter element before the locking mechanism can be used to lock it in place, resulting in low installation efficiency. Summary of the Invention

[0004] This application provides a filtration device to solve the problem of low installation efficiency in related technologies. The technical solution is as follows:

[0005] In a first aspect, embodiments of this application provide a filtering device, including:

[0006] The mounting base has a mounting cavity and a mounting opening, the mounting opening is located at the top of the mounting cavity and communicates with the mounting cavity, and the mounting base is provided with a first guide portion, which is located on the side wall of the mounting cavity;

[0007] The filter element is detachably disposed in the mounting cavity, and the filter element enters and exits the mounting cavity through the mounting port. The filter element is provided with a second guide portion and a first locking portion. The second guide portion is located on the outer side wall of the filter element, and the second guide portion and the first guide portion are slidably engaged to guide the filter element to move vertically along the mounting cavity during the process of inserting the filter element into the mounting cavity.

[0008] A locking member is rotatably mounted on the mounting base. The locking member is located on the side near the mounting opening. The locking member has a second locking part, which has a first position that cooperates with the first locking part to restrict the filter element in the mounting cavity. The second locking part also has a second position that disengages from the first locking part to allow the filter element to be released from the mounting cavity. The locking member can rotate downward to switch the second locking part from the second position to the first position, and it can also rotate upward to switch the second locking part from the first position to the second position.

[0009] During the sliding engagement between the second guide portion and the first guide portion, the first locking portion is located above the second locking portion, and the first locking portion is aligned with the second locking portion.

[0010] In one embodiment, the first guide portion has a guide groove, and the second guide portion has a guide protrusion, wherein the guide protrusion is slidably engaged with the guide groove.

[0011] In one embodiment, the first guide portion is further provided with a guide portion, the guide portion and the guide groove are arranged sequentially from top to bottom along the first guide portion, the guide portion extends obliquely downward toward the upper opening of the guide groove, and the guide portion and the guide protrusion are slidably engaged to guide the guide protrusion to be inserted into the guide groove.

[0012] In one embodiment, the filter element is provided with a handle located at one end near the top of the filter element. The handle is rotatable relative to the filter element. The handle has a third position that rotates upward to be vertically positioned on the filter element, allowing the filter element to be pulled out of the mounting cavity by hand. The handle also has a fourth position that rotates downward to be horizontally positioned on the filter element, so that the handle is received in the mounting cavity. The handle rotates to switch between the third position and the fourth position.

[0013] In one embodiment, the filtration device further includes:

[0014] A first elastic reset member, one end of which is connected to the mounting base, and the other end of which is connected to the locking member, is used to provide a driving force to the locking member so that the locking member rotates downward and drives the second locking part to switch from the second station to the first station.

[0015] In one embodiment, the first locking part is provided on the handle;

[0016] When the handle is in the fourth position, the first locking part cooperates with the second locking part;

[0017] During the process of inserting the filter element into the mounting cavity by holding the handle, the first locking part abuts against the locking member and pushes the locking member to rotate upward;

[0018] During the process of pulling the filter element out of the mounting cavity by holding the handle, the first locking part abuts against the locking member and pushes the locking member to rotate upward.

[0019] In one embodiment, the mounting base is provided with a first mounting portion;

[0020] The locking component is provided with a second hook-up part;

[0021] One end of the first elastic reset member is provided with a first hook, and the other end of the first elastic reset member is provided with a second hook. The first hook is hung on the first hooking part to connect the first elastic reset member to the mounting base. The second hook is hung on the second hooking part to connect the first elastic reset member to the locking member.

[0022] In one embodiment, the handle is further provided with a lifting portion located on the side near the first locking portion. The lifting portion abuts against the top edge of the mounting base as the handle rotates upward, so that the bottom of the filter element is separated from the bottom wall of the mounting cavity.

[0023] In one embodiment, one of the mounting base and the handle has a slot, and the other has an elastic locking element. The elastic locking element is movably configured and has a locking part that engages with the slot to restrict the handle to the fourth position. The movement of the elastic locking element causes the locking part to engage with or disengage from the slot.

[0024] In one embodiment, the slot is provided on the handle;

[0025] The elastic locking element is disposed on the side wall of the mounting cavity. The elastic locking element is located on the side close to the mounting opening. The elastic locking element is also provided with an unlocking part, which is used for pressing by hand to drive the locking part to disengage from the slot.

[0026] The top of the filter element has an operation port that communicates with the mounting cavity, so that the unlocking part is exposed in the operation port, and the operation port is used to allow a hand to be inserted into the mounting cavity.

[0027] In one embodiment, the mounting base further has a first water passage, the upper end of which extends to the bottom wall of the mounting cavity, and the lower end of which is used to communicate with a water supply device or a water-using device.

[0028] The filtration device further includes:

[0029] The first elastic water-stop structure is vertically movable and disposed on the first water passage. The first elastic water-stop structure has a first water-stop position for closing the first water passage and a first connecting position for opening the first water passage. The first elastic water-stop structure can maintain the first water-stop position under its own elastic action.

[0030] The bottom of the filter element has a second water passage, which connects to the raw water chamber or the purified water chamber in the filter element.

[0031] The filtration device further includes:

[0032] The second elastic water-stop structure is vertically movable in the second water passage. The second elastic water-stop structure has a second water-stop position for closing the second water passage and a second connecting position for opening the second water passage. The second elastic water-stop structure can maintain the second water-stop position under its own elasticity.

[0033] During the process of inserting the filter element into the mounting cavity, the lower end of the second elastic water-stop structure abuts against the upper end of the first elastic water-stop structure, so that the first elastic water-stop structure is switched from the first water-stop position to the first connecting position by the thrust of the second elastic water-stop structure, and the second elastic water-stop structure is switched from the second water-stop position to the second connecting position by the thrust of the first elastic water-stop structure, so as to connect the second water passage and the first water passage.

[0034] The advantages or beneficial effects of the above technical solutions include at least the following:

[0035] The filtration device of the present invention has a first guide portion on the side wall of the mounting cavity and a second guide portion on the outer side wall of the filter element. The second guide portion can cooperate with the first guide portion. Therefore, during the process of inserting the filter element into the mounting cavity through the mounting port, the second guide portion cooperates with the first guide portion to guide the filter element to move vertically along the mounting cavity, thus playing a guiding role. This guides the filter element to be smoothly inserted vertically into the mounting cavity, preventing the filter element from rotating relative to the mounting cavity and deviating from its set position in the mounting cavity during insertion. At the same time, it also plays a positioning role, ensuring that the filter element is properly positioned during insertion. During the insertion into the mounting cavity, the first locking part can be aligned with the second locking part. There is no need to manually rotate the filter element to align the first locking part with the second locking part when it is being inserted into the mounting cavity. When the first locking part is close to the second locking part, the locking element is turned upwards until the first locking part is below the second locking part, and then the locking element is turned downwards until the second locking part engages with the first locking part. This reliably locks the filter element in the mounting cavity, enabling the filter element to be quickly and correctly inserted into the mounting cavity and reliably locked onto the mounting base, thus improving installation efficiency.

[0036] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0037] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0038] Figure 1 This is a three-dimensional structural diagram of the filtration device of the present invention from a first-view perspective.

[0039] Figure 2 This is a cross-sectional view of the filtering device of the present invention from a second perspective;

[0040] Figure 3 for Figure 2 Enlarged view of section A in the image;

[0041] Figure 4 This is an exploded view of the filtration device of the present invention from a third-person perspective;

[0042] Figure 5 This is a three-dimensional structural diagram of the filtration device of the present invention from a fourth perspective.

[0043] Figure 6This is a three-dimensional structural diagram of the filtration device of the present invention from a fourth perspective.

[0044] Figure 7 This is an exploded view of the filtering device of the present invention from a fifth perspective;

[0045] Figure 8 This is a partial schematic diagram of the filtering device of the present invention from a sixth-angle perspective.

[0046] Figure 9 This is a cross-sectional view of the filtering device of the present invention from a seventh perspective.

[0047] Figure 10 for Figure 9 Enlarged view of section B in the image;

[0048] Figure 11 This is a three-dimensional structural diagram of the mounting body in this invention;

[0049] Figure 12 This is a three-dimensional structural schematic diagram of the first elastic reset member in this invention;

[0050] Figure 13 This is a three-dimensional structural diagram of the locking component in this invention. Detailed Implementation

[0051] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0052] See Figures 1-13 This illustration shows a preferred embodiment of a filtration device of the present invention, comprising:

[0053] Mounting base 1 has a mounting cavity 111 and a mounting opening. The mounting opening is located at the top of the mounting cavity 111 and communicates with the mounting cavity 111. The mounting base 1 is provided with a first guide part 112, which is located on the side wall of the mounting cavity 111.

[0054] The filter element 2 is detachably disposed in the mounting cavity 111, and the filter element 2 enters and exits the mounting cavity 111 through the mounting port. The filter element 2 is provided with a second guide part 21 and a first locking part 22. The second guide part 21 is located on the outer side wall of the filter element 2, and the second guide part 21 and the first guide part 112 are slidably engaged to guide the filter element 2 to move vertically along the mounting cavity 111 during the process of inserting the filter element 2 into the mounting cavity 111.

[0055] Locking member 3 is rotatably mounted on mounting base 1. Locking member 3 is located on the side near the mounting opening. Locking member 3 is provided with a second locking part 31. The second locking part 31 has a first working position that cooperates with the first locking part 22 to restrict the filter element 2 in the mounting cavity 111. The second locking part 31 also has a second working position that disengages from the first locking part 22 so that the filter element 2 can be released from the mounting cavity 111. Locking member 3 can rotate downward to switch the second locking part 31 from the second working position to the first working position, and locking member 3 can rotate upward to switch the second locking part 31 from the first working position to the second working position.

[0056] During the sliding engagement of the second guide portion 21 and the first guide portion 112, the first locking portion 22 is located above the second locking portion 31, and the first locking portion 22 is aligned with the second locking portion 31.

[0057] The filtration device of the present invention has a first guide portion 112 on the side wall of the mounting cavity 111 and a second guide portion 21 on the outer side wall of the filter element 2. The second guide portion 21 can cooperate with the first guide portion 112. Therefore, during the process of inserting the filter element 2 into the mounting cavity 111 through the mounting port, the second guide portion 21 cooperates with the first guide portion 112 to guide the filter element 2 to move vertically along the mounting cavity 111, thus playing a guiding role. This guides the filter element 2 to be smoothly inserted into the mounting cavity 111 vertically, preventing the filter element 2 from rotating relative to the mounting cavity 111 and deviating from its set position in the mounting cavity 111 during insertion. At the same time, it also plays a positioning role, ensuring that the first locking portion 22 can be aligned with the second locking portion 31 during the process of inserting the filter element 2 into the mounting cavity 111, without the need for further alignment. When the filter element 2 is about to be inserted into the mounting cavity 111, manually rotate the filter element 2 until the first locking part 22 is aligned with the second locking part 31. This can guide and position the filter element 2 during installation, making it easier to quickly and correctly insert the filter element 2 into the mounting cavity 111. This avoids the filter element 2 rotating during the insertion process and eliminates the need to manually rotate the filter element 2 until the first locking part 22 is aligned with the second locking part 31, thus improving installation efficiency. When the first locking part 22 is close to the second locking part 31, rotate the locking member 3 upwards until the first locking part 22 is below the second locking part 31, and then rotate the locking member 3 downwards until the second locking part 31 engages with the first locking part 22. This reliably locks the filter element 2 into the mounting cavity 111, ensuring that the filter element 2 is reliably fixed to the mounting base 1 and that the filter element 2 can operate normally.

[0058] When replacing filter element 2, simply rotate the locking part 3 upwards until the second locking part 31 is disengaged from the first locking part 22, and then pull the filter element 2 out of the mounting cavity 111. The filter element 2 is easy to install and remove, and can be replaced quickly.

[0059] In addition, the filter element 2 can be unlocked by rotating the locking part 3 upward relative to the mounting base 1, and locked by rotating the locking part 3 downward relative to the mounting base 1. Whether unlocking or locking, it is only necessary to rotate the locking part 3. The unlocking and locking operations are simple and can improve the unlocking and locking efficiency.

[0060] See Figure 2 , Figure 4 and Figure 11 In one embodiment, the first guide portion 112 has a guide groove 1121, and the second guide portion 21 has a guide protrusion, which is slidably engaged with the guide groove 1121. The guide groove 1121 can limit the left and right swaying of the guide protrusion during sliding and can reliably engage with the guide protrusion to guide the filter element 2 to move smoothly vertically along the mounting cavity 111. At the same time, the guide structure composed of the guide protrusion and the guide groove 1121 is simple and easy to manufacture, thereby reducing the cost of the filtration device.

[0061] In other embodiments, the specific structures of the first guide portion 112 and the second guide portion 21 can be interchanged, that is, the first guide portion 112 has a guide protrusion, while the second guide portion 21 has a guide groove 1121.

[0062] Of course, in other embodiments, the first guide portion 112 and the second guide portion 21 can both be vertically extending protrusions. The two protrusions can slide together, which can also guide the filter element 2 to move vertically during the process of inserting the filter element 2 into the mounting cavity 111.

[0063] See Figure 2 and Figure 11 In one embodiment, the first guide portion 112 is further provided with a guide portion 1122. The guide portion 1122 and the guide groove 1121 are arranged sequentially from top to bottom along the first guide portion 112. That is, the guide portion 1122 is located above the guide groove 1121. The guide portion 1122 extends obliquely downward toward the upper opening of the guide groove 1121. The guide portion 1122 is slidably engaged with the guide protrusion to guide the guide protrusion to be inserted into the guide groove 1121. Since the guide portion 1122 extends obliquely downward toward the upper opening of the guide groove 1121 and the guide portion 1122 can slide in conjunction with the guide protrusion, during the process of inserting the filter element 2 into the installation cavity 111, the guide protrusion abuts against the guide portion 1122, allowing the guide protrusion to slide along the guide portion 1122 as the filter element 2 moves, until it is inserted into the guide groove 1121 under the guidance of the guide portion 1122, thus playing a guiding role in installation. This facilitates the rapid guidance of the guide protrusion to engage with the guide groove 1121, further improving installation efficiency.

[0064] See Figure 11In one embodiment, there are two guide portions 1122, which are spaced apart around the vertical center line of the mounting cavity 111 and form a guide groove. The lower end of the guide groove is connected to the upper opening of the guide groove 1121, and the cross-sectional area of ​​the guide groove gradually increases from bottom to top. Thus, during the insertion of the filter element 2 into the mounting cavity 111, the guide protrusion can be held against either guide portion 1122 without requiring deliberate alignment. Furthermore, because the cross-sectional area of ​​the guide groove gradually increases from bottom to top, the guide groove forms a conical structure with a larger upper opening, facilitating the rapid insertion of the guide protrusion into the guide groove.

[0065] See Figure 11 In one embodiment, the lower end of the guide portion 1122 extends to the upper opening of the guide groove 1121, so that the guide portion is connected to the upper end of the guide groove 1121, so that there is no gap between the lower end of the guide portion 1122 and the upper end of the guide groove 1121, so that the guide protrusion slides more smoothly on the guide portion 1122 without getting stuck.

[0066] Of course, in other embodiments, the lower end of the guide portion 1122 and the upper opening of the guide groove 1121 are spaced apart. This space is smaller than the outer diameter of the guide protrusion, which also allows the guide protrusion to slide more smoothly on the guide portion 1122 without getting stuck.

[0067] See Figure 11 In one embodiment, the upper end of the guide portion 1122 extends to the mounting port so that when the guide protrusion is inserted into the mounting cavity 111 along with the filter element 2 and is close to the mounting port, it can abut against the guide portion 1122, thereby guiding the guide protrusion to be quickly inserted into the guide groove 1121.

[0068] Of course, in other embodiments, the upper end of the guide portion 1122 may be located below the mounting port.

[0069] See Figure 2 In one embodiment, the lower part of the guide protrusion has an arc portion, which is arranged to protrude downwards. The arc portion is slidably engaged with the guide portion 1122 so that the guide protrusion slides more smoothly along the guide portion 1122.

[0070] See Figure 2 , Figures 7-8In one embodiment, the mounting base 1 has a connecting portion 113 on its side. The inner wall of the connecting portion 113 forms part of the side wall of the mounting cavity 111. The inner wall of the connecting portion 113 has the aforementioned first guide portion 112. The outer wall of the connecting portion 113 is located outside the mounting base 1 and has a protrusion. Since the first guide portion 112 has a guide groove 1121, and the guide groove 1121 is located on the inner wall of the connecting portion 113, the thickness of the connecting portion 113 is reduced. By providing a protrusion on the outer wall of the connecting portion 113, the thickness of the connecting portion 113 can be increased, thereby enhancing the mechanical strength of the connecting portion 113. This prevents the connecting portion 113 from cracking or deforming due to the sliding fit between the guide groove 1121 and the guide protrusion, thus protecting the mounting base 1. At the same time, since the protrusion is only provided on the connecting portion 113, the material cost is not excessively increased.

[0071] In one embodiment, the lateral projection of the protrusion can cover the lateral projection of the first guide portion 112, so that the protrusion can effectively support the first guide portion 112, greatly enhancing the structural strength of the connecting portion 113 and making the connecting portion 113 less prone to cracking or deformation.

[0072] See Figures 1-8 To facilitate replacement of the filter element 2, in one embodiment, the filter element 2 is provided with a handle 23. The handle 23 is located at one end near the top of the filter element 2. The handle 23 can rotate relative to the filter element 2. The handle 23 has a third position that rotates upward to be vertically placed on the filter element 2, so that the filter element 2 can be pulled out of the mounting cavity 111 by hand. The handle 23 also has a fourth position that rotates downward to be horizontally placed on the filter element 2, so that the handle 23 is received in the mounting cavity 111. The handle 23 rotates to switch between the third position and the fourth position.

[0073] See Figures 1-7 In one embodiment, the filtration device further includes:

[0074] The first elastic reset member 4 has one end connected to the mounting base 1 and the other end connected to the locking member 3. The first elastic reset member 4 provides a driving force to the locking member 3, causing it to rotate downwards and switch the second locking part 31 from the second position to the first position. Thus, when disassembling the filter element 2, applying a rotational force to the locking member 3 in the direction of stretching the first elastic reset member 4 disengages the locking member 3 from the filter element 2 (i.e., the locking member 3 rotates upwards), unlocking the filter element 2. After releasing the locking member 3, it automatically resets to its position in conjunction with the filter element 2 under the driving force, locking the filter element 2 and fixing it to the mounting base 1. The filter element 2 is easy and convenient to install and remove, with high efficiency, facilitating replacement. Furthermore, the first elastic reset member 4 only deforms when the locking member 3 needs to rotate, and does not deform when the locking member 3 is not rotating, resulting in a longer service life.

[0075] In one embodiment, the first locking part 22 is provided on the handle 23;

[0076] When the handle 23 is in the fourth position, the first locking part 22 and the second locking part 31 cooperate;

[0077] During the process of inserting the filter element 2 into the mounting cavity 111 by the handle 23, the first locking part 22 abuts against the locking member 3 and pushes the locking member 3 to rotate upward;

[0078] During the process of pulling the filter element 2 out of the mounting cavity 111 by the handle 23, the first locking part 22 abuts against the locking member 3 and pushes the locking member 3 to rotate upward. Thus, when the filter element 2 is inserted into the mounting cavity 111, the locking part 3 can be pushed to rotate in the direction of the stretching elastic reset part (i.e., rotate upward) by the first locking part 22 abutting against the locking part 3, until the first locking part 22 and the second locking part 31 are engaged. When the filter element 2 is pulled out of the mounting cavity 111, the filter element 2 can be lifted by the handle 23, and at the same time the first locking part 22 will push up the locking part 3 until the first locking part 22 and the second locking part 31 are disengaged. The filter element 2 can be unlocked and removed by lifting the handle 23 with one hand, making filter element removal easier. At the same time, the handle 23 can drive the locking part 3 to rotate, so that the locking part 3 can be turned to avoid the first locking part 22 during the insertion of the filter element 2, and the locking part 3 can be turned to unlock the filter element 2 during the pulling out of the filter element 2, improving the utilization rate of the handle 23 and making the replacement of the filter element 2 more convenient.

[0079] See Figures 5-7 In one embodiment, the mounting base 1 is provided with a first mounting part 114;

[0080] Locking component 3 is provided with a second hook-on part 32;

[0081] One end of the first elastic reset member 4 is provided with a first hook 41, and the other end of the first elastic reset member 4 is provided with a second hook 42. The first hook 41 is hung on the first hooking part 114 to connect the first elastic reset member 4 to the mounting base 1, preventing the first elastic reset member 4 from disengaging from the mounting base 1 during the rotation of the locking part 3, thereby improving the connection stability and reliability between the first elastic reset member 4 and the mounting base 1. The second hook 42 is hung on the second hooking part 32 to connect the first elastic reset member 4 to the locking part 3, preventing the first elastic reset member 4 from disengaging from the locking part 3 during the rotation of the locking part 3, thereby improving the connection stability and reliability between the first elastic reset member 4 and the locking part 3. In addition, during installation, the first elastic reset member 4 can be installed in the set position simply by hanging the first hook 41 on the first hooking part 114 and the second hook 42 on the second hooking part 32. The installation operation is simple and the installation efficiency is high.

[0082] See Figure 7 In one embodiment, the first hooking part 114 is provided with a hooking body 1141 and a limiting body 1142. The inner end of the hooking body 1141 is connected to the mounting base 1. The hooking body 1141 is provided for the first hook 41 to be arranged around it so that the first hook 41 is hooked on the first hooking part 114. The limiting body 1142 is provided at the outer end of the hooking body 1141. The limiting body 1142 protrudes from the side of the hooking body 1141 that is connected to the first hook 41. The limiting body 1142 can abut against the first hook 41 to restrict the first hook 41 to the hooking body 1141. Thus, during installation, by hanging the first hook 41 on the hanging body 1141, the first elastic reset member 4 can be connected to the mounting base 1. The installation operation is simple and more convenient. At the same time, since the inner end of the hanging body 1141 is connected to the mounting base 1 and the outer end of the hanging body 1141 is connected to the limiting body 1142, the first hook 41 can be limited by the mounting base 1 and the limiting body 1142, preventing the first hook 41 from detaching from the hanging body 1141. This ensures that the first elastic reset member 4 is reliably connected to the mounting base 1, resulting in higher connection stability.

[0083] In other embodiments, the first hook portion 114 may also be provided with a through hole for the first hook 41 to pass through, so that the first hook 41 can be hung on the first hook portion 114, and the first elastic reset member 4 can be reliably connected to the mounting base 1.

[0084] In one embodiment, the second hooking part 32 has a hooking hole 321 for the second hook 42 to pass through, so that the second hook 42 can be hooked onto the second hooking part 32. Thus, by having the second hook 42 pass through the hooking hole 321 and hook onto the second hooking part 32, the first elastic reset member 4 and the locking member 3 can be reliably connected together, making installation simple and convenient.

[0085] Specifically, both ends of the second hook part 32 in the length direction are connected to the locking member 3, and the second hook part 32 and the locking member 3 form the hook hole 321.

[0086] In other embodiments, the second hooking part 32 may specifically include a hooking body 1141 and a limiting body 1142. The inner end of the hooking body 1141 is connected to the locking member 3, and the outer end of the hooking body 1141 is connected to the limiting body 1142. The second hook 42 is hooked on the hooking body 1141, and the second hook 42 is limited by the locking member 3 and the limiting body 1142 to restrict the second hook 42 to the hooking body 1141, so as to ensure that the first elastic reset member 4 and the locking member 3 are reliably connected together.

[0087] In one embodiment, the first elastic reset member 4 is further provided with a spring 43, one end of which bends outward to form a first hook 41, and the other end of which bends outward to form a second hook 42. The spring 43 has better elastic properties, which can reliably maintain the first elastic reset member 4 in the state of applying a driving force to the locking member 3, so that the locking member 3 can be reset smoothly and permanently.

[0088] In other embodiments, a spring sheet can be used instead of the spring 43, which can also apply a driving force to the locking member 3 to ensure that the locking member 3 can be reset.

[0089] In other embodiments, one end of the first elastic reset member 4 may abut against the mounting base 1, and the other end of the first elastic reset member 4 may abut against the locking member 3.

[0090] In other embodiments, one end of the first elastic reset member 4 may be welded to the mounting base 1, and the other end of the first elastic reset member 4 may be welded to the locking member 3.

[0091] In other embodiments, an electric drive structure can be used to replace the first elastic reset member 4. The electric drive structure can be any one of an electric push rod, a cylinder, etc.

[0092] See Figure 7 , Figure 8 and Figure 13In one embodiment, the second locking part 31 has a locking groove 311, and the first locking part 22 has a locking protrusion 221. The locking protrusion 221 cooperates with the locking groove 311 to restrict the second locking part 31 to the first working position. By cooperating with the locking groove 311 and the locking protrusion 221, the contact area between the first locking part 22 and the second locking part 31 can be increased, which can improve the connection stability and reliability between the locking member 3 and the filter element 2, thereby reliably locking the filter element 2 onto the mounting base 1.

[0093] See Figure 8 In one embodiment, the first locking part 22 is further provided with a limiting protrusion 222, which abuts against the second locking part 31 to restrict the locking protrusion 221 in the locking groove 311, so that the first locking part 22 and the second locking part 31 can reliably cooperate, thereby improving the locking reliability of the filter element 2.

[0094] In other embodiments, the second locking part 31 may be provided with the above-mentioned locking protrusion 221, and the second locking part 31 may be provided with the above-mentioned locking groove 311.

[0095] In other embodiments, one of the first locking part 22 and the second locking part 31 is provided with a first locking protrusion and the other is provided with a second locking protrusion. The second locking protrusion cooperates with the first locking protrusion to lock the filter element 2.

[0096] See 7- Figure 8 In one embodiment, the first locking part 22 is provided with a first guide slope 223, and the locking member 3 is provided with a second guide slope 312. The second guide slope 312 and the first guide slope 223 are slidably engaged so as to push the locking member 3 to rotate upward during the process of inserting the filter element 2 into the mounting cavity 111, thereby guiding the first locking part 22 and the second locking part 31 to be fastened together.

[0097] See Figures 5-8 In one embodiment, the mounting base 1 is provided with a first positioning inclined surface 115, and the locking member 3 is provided with a second positioning inclined surface 33. The second positioning inclined surface 33 abuts against the first positioning inclined surface 115 to restrict the rotation of the locking member 3, thereby restricting the first locking part 22 to the first working position, thereby realizing reliable locking of the filter element 2 and improving structural stability and reliability.

[0098] See Figure 6 and Figure 13In one embodiment, the locking member 3 is further provided with an arc-shaped surface 34, which is connected to the second positioning inclined surface 33 and is arranged around the rotation center line of the locking member 3. The arc-shaped surface 34 is movably engaged with the first positioning inclined surface 115 to guide the locking member 3 to rotate. Thus, during the rotation of the locking member 3, the first positioning inclined surface 115 disengages from the second positioning inclined surface 33 as the locking member 3 rotates. At the same time, the arc-shaped surface 34 is movably engaged with the second positioning inclined surface 33, guiding the locking member 3 to rotate in the direction of the stretching elastic reset member or in the direction of the elastic reset member's reset, thus playing a rotational guiding role and making the rotation of the locking member 3 smoother, thereby improving the smoothness of the locking and unlocking operation of the filter element 2.

[0099] See Figures 5-8 and Figure 13 In one embodiment, the mounting base 1 is provided with a first connecting protrusion 116;

[0100] The locking member 3 has a first connecting hole 35, which is rotatably engaged with the first connecting protrusion 116, allowing the locking member 3 to rotate relative to the mounting base 1. Thus, during installation, by engaging the first connecting hole 35 with the first connecting protrusion 116, the locking member 3 can be rotatably mounted on the mounting base 1. The installation operation is simple and efficient, and the rotating connection structure formed by the first connecting protrusion 116 and the first connecting hole 35 is simple, practical, and low-cost.

[0101] See Figures 5-8 In one embodiment, the mounting base 1 is further provided with a second connecting protrusion 117, which is arranged around the first connecting protrusion 116.

[0102] The locking member 3 also has a second connecting hole, which is arranged around the first connecting hole 35 and is rotatably engaged with the second connecting protrusion 117. The engagement between the second connecting hole and the second connecting protrusion 117 improves the rotational stability of the locking member 3 and makes the rotation of the locking member 3 smoother.

[0103] See Figures 5-8 In one embodiment, the mounting base 1 includes:

[0104] Mounting body 11 has the above-mentioned mounting cavity 111, mounting port, receiving groove 118 and inlet / outlet. The receiving groove 118 receives the locking member 3. The inlet / outlet is disposed opposite to the bottom wall of the receiving groove 118. The inlet / outlet communicates with the receiving groove 118. The inlet / outlet allows the locking member 3 to enter and exit the receiving groove 118. The inner end of the first connecting protrusion 116 is connected to the bottom wall of the receiving groove 118.

[0105] Cover plate 12 is provided on the mounting body 11. Cover plate 12 covers the inlet and outlet to restrict the locking member 3 in the receiving groove 118. Cover plate 12 has positioning hole 121, which engages with the outer end of the first connecting protrusion 116. Thus, during installation, the second hook 42 is engaged with the second connecting part 32, the locking member 3 is placed in the receiving groove 118 and connected to the first connecting protrusion 116, and the first hook 41 is engaged with the first connecting part 114. Then, the cover plate 12 is installed on the mounting body 11, thus completing the installation of the locking member 3 and the first elastic reset member 4. The cover plate 12 and the bottom wall of the receiving groove 118 together limit the locking member 3 and the first elastic reset member 4, confining the locking member 3 and at least part of the first elastic reset member 4 in the receiving groove 118. This improves the connection stability and reliability between the locking member 3 and the mounting base 1, as well as the connection stability and reliability between the first elastic reset member 4 and the locking member 3, and between the first elastic reset member 4 and the mounting base 1. In addition, during installation, the positioning hole 121 engages with the outer end of the first connecting protrusion 116 to achieve the installation positioning of the cover plate 12, facilitating the quick and correct installation of the cover plate 12 on the mounting body 11 and improving installation efficiency.

[0106] See Figures 5-8 In one embodiment, the mounting body 11 is provided with a plurality of threaded holes 119, which are arranged around the receiving groove 118;

[0107] The cover is provided with multiple third connection holes 122, and each third connection hole 122 is connected to a threaded hole 119 by a screw to reliably connect the mounting body 11 and the cover plate 12.

[0108] In other embodiments, the mounting body 11 and the cover plate 12 can also be connected together by any one or a combination of snap-fit, magnetic engagement, etc.

[0109] See Figure 8 In one embodiment, the handle 23 is further provided with a lifting portion 231, which is located on the side near the first locking portion 22. The lifting portion 231 abuts against the top edge of the mounting base 1 as the handle 23 rotates upward, thereby separating the bottom of the filter element 2 from the bottom wall of the mounting cavity 111. Thus, when the filter element 2 is pulled out by the handle 23, the filter element 2 can be lifted by the lifting portion 231 abutting against the top edge of the mounting base 1, thereby separating the bottom of the filter element 2 from the bottom wall of the mounting cavity 111, which saves effort and makes the disassembly of the filter element 2 more convenient.

[0110] See Figure 8In one embodiment, the handle 23 is further provided with a guide arc-shaped part 232, which is connected to the lifting part 231. During the upward rotation of the handle 23, the guide arc-shaped part 232 can be movably engaged with the top edge of the mounting base 1 to guide the lifting part 231 to engage with the top edge of the mounting base 1. This ensures that the guide arc-shaped part 232 remains in contact with the mounting base 1 during the process of pulling out the filter element 2 by hand, preventing jamming and improving the feel.

[0111] See Figures 2-3 In one embodiment, one of the mounting base 1 and the handle 23 has a slot 233, and the other has an elastic locking element 1110. The elastic locking element 1110 is movably configured and has a locking part 111011. The locking part 111011 cooperates with the slot 233 to restrict the handle 23 to the fourth position, thereby locking the handle 23 to the mounting base 1 and preventing the handle 23 from rotating arbitrarily and causing the filter element 2 to be unlocked. This improves the structural reliability. Furthermore, the movement of the elastic locking element 1110 causes the locking part 111011 to cooperate with or disengage from the slot 233. In other words, the handle 23 can be locked or unlocked by driving the elastic locking element 1110, which is convenient and efficient.

[0112] See Figure 3 In one embodiment, the card slot 233 is provided on the handle 23;

[0113] The elastic locking element 1110 is provided on the side wall of the mounting cavity 111. The elastic locking element 1110 is located on the side close to the mounting opening. The elastic locking element 1110 is also provided with an unlocking part 111012. The unlocking part 111012 is used for hand pressing to drive the locking part 111011 out of the slot 233.

[0114] The top of the filter element 2 has an operation port 24, which communicates with the mounting cavity 111, so that the unlocking part 111012 is exposed in the operation port 24. The operation port 24 is used to allow a hand to reach into the mounting cavity 111. Thus, when replacing the filter element 2, the hand can be inserted into the operation port 24 and the unlocking part 111012 can be pressed to push the elastic locking member 1110 to move, so that the locking part 111011 disengages from the slot 233, thereby unlocking the handle 23, so that the filter element 2 can be pulled out of the mounting cavity 111 by the handle 23. The unlocking operation is convenient.

[0115] See Figure 3 In one embodiment, the resilient locking element 1110 includes:

[0116] The locking body 11101 is movably disposed on the mounting base 1, and the locking part 111011 and the unlocking part 111012 are both disposed on the locking body 11101;

[0117] The second elastic reset member 11102 is disposed between the locking body 11101 and the mounting base 1. The second elastic reset member 11102 provides a driving force to the locking body 11101 to restrict the locking part 111011 in the slot 233, thereby reliably locking the handle 23. Thus, by applying a moving force to the locking body 11101 that overcomes the driving force of the second elastic reset member 11102, the locking part 111011 can be disengaged from the slot 233, thereby unlocking the handle 23, releasing the locking body 11101, and the second elastic reset member 11102 resets, pushing the locking body 11101 to reset as well.

[0118] See Figure 3 In one embodiment, the locking part 111011 has a third guide slope 111013, and the handle 23 is slidably engaged with the third guide slope 111013 to guide the locking part 111011 to engage with the slot 233 to avoid jamming.

[0119] In one embodiment, there are two locking elements 3, which are respectively placed on the two opposite outer side walls of the mounting base 1.

[0120] The handle 23 is provided with a first locking part 22 at both the left and right ends. The first locking part 22 cooperates with the corresponding second locking part 31 to reliably lock the filter element 2.

[0121] See Figures 9-10 In one embodiment, the mounting base 1 further has a first water passage 1120, the upper end of the first water passage 1120 extending to the bottom wall of the mounting cavity 111, and the lower end of the first water passage 1120 being used to communicate with a water supply device or a water-using device.

[0122] The filtration device also includes:

[0123] The first elastic water-stop structure 5 is vertically movable and is disposed on the first water passage 1120. The first elastic water-stop structure 5 has a first water-stop position for closing the first water passage 1120 and a first connecting position for opening the first water passage 1120. The first elastic water-stop structure 5 can maintain the first water-stop position under its own elastic action.

[0124] The bottom of the filter element 2 has a second water passage 25, which connects to the raw water chamber or the purified water chamber in the filter element 2.

[0125] The filtration device also includes:

[0126] The second elastic water-stop structure 6 is vertically movable in the second water passage 25. The second elastic water-stop structure 6 has a second water-stop position for closing the second water passage 25 and a second connecting position for opening the second water passage 25. The second elastic water-stop structure 6 can maintain the second water-stop position under its own elastic action.

[0127] During the insertion of filter element 2 into installation cavity 111, the lower end of the second elastic water-stop structure 6 abuts against the upper end of the first elastic water-stop structure 5, so that the first elastic water-stop structure 5 is switched from the first water-stop position to the first connecting position by the thrust of the second elastic water-stop structure 6, and the second elastic water-stop structure 6 is switched from the second water-stop position to the second connecting position by the thrust of the first elastic water-stop structure 5, so as to connect the second water passage 25 and the first water passage 1120.

[0128] Thus, when the filter element 2 is installed on the mounting base 1, the lower end of the second elastic water-stopping structure 6 can abut against the upper end of the first elastic water-stopping structure 5, causing the first elastic water-stopping structure 5 to switch from the first water-stopping position to the first connecting position under the thrust of the second elastic water-stopping structure 6, thereby opening the first water passage 1120 and connecting it to the water supply device or the water-using device. Simultaneously, the second elastic water-stopping structure 6, under the thrust of the first elastic water-stopping structure 5, switches from the second water-stopping position to the second connecting position, thereby opening the second water passage 25 and connecting it to the raw water chamber or the purified water chamber. At the same time, the second water passage 25 connects to the first water passage 1120, thereby connecting the water supply device to the raw water chamber and delivering the raw water output from the water supply device to the filter element 2. Alternatively, the water-using device connects to the water purification device, outputting the purified water prepared by the filter element 2 to the water-using device for supply. This achieves the goal of... The first water passage 1120 and the second water passage 25 can be opened during the installation process, making water connection convenient. No controller is needed to open the first water passage 1120, saving power and ensuring uninterrupted connection reliability even during power outages. When disassembling the filter element 2, it is removed from the mounting base 1. The second elastic water-stopping structure 6 disengages from the first elastic water-stopping structure 5. Under its own elasticity, the second elastic water-stopping structure 6 resets from the second connecting position to the second water-stopping position, reliably sealing the second water passage 25 and achieving water stoppage. Simultaneously, the first elastic water-stopping structure 5 switches from the first connecting position to the first water-stopping position under its own elasticity, reliably sealing the first water passage 1120 and achieving water stoppage. This allows the first water passage 1120 and the second water passage 25 to be closed during disassembly, eliminating the need for a controller to close the first water passage 1120, saving power, and ensuring uninterrupted connection reliability even during power outages.

[0129] See Figure 10In one embodiment, the first elastic waterproofing structure 5 includes:

[0130] The first water-stopping base 51 is vertically movable and is installed on the first water passage 1120;

[0131] The first water-stopping elastic element 52 has its lower end connected to the mounting base 1 and its upper end connected to the first water-stopping base 51.

[0132] The first sealing ring 53 is disposed on the first water-stopping base 51. When the first elastic water-stopping structure 5 is in the first water-stopping position, the first sealing ring 53 abuts against the first water passage 1120 to close the first water passage 1120. When the first elastic water-stopping structure 5 is in the first connecting position, the first sealing ring 53 disengages from the first water passage 1120 and is in clearance fit with the first water passage 1120 to open the first water passage 1120. Thus, when the first water-stop base 51 moves upward to the first water-stop position, the first sealing ring 53 abuts against the first water passage 1120, so that the first elastic water-stop structure 5 is tightly attached to the first water passage 1120, so as to reliably seal the gap between the first elastic water-stop structure 5 and the first water passage 1120 and prevent water leakage. When the first water-stop base 51 moves downward to the first connecting position, the first sealing ring 53 disengages from the first water passage 1120, and the first sealing ring 53 and the first water passage 1120 are in clearance fit to ensure that the first water passage 1120 can be opened.

[0133] See Figure 10 In one embodiment, the first water passage 1120 has a transition section 11201, the cross-section of which gradually decreases from bottom to top, and the first sealing ring 53 can abut against the transition section 11201. Thus, when the first elastic water-stopping structure 5 moves upward to the first water-stopping position, the first sealing ring 53 abuts against the transition section 11201 to reliably close the first water passage 1120. At the same time, the abutment between the first sealing ring 53 and the transition section 11201 provides a limiting effect on the first elastic water-stopping structure 5, confining the first elastic water-stopping structure 5 to the first water passage 1120 and preventing it from detaching from the first water passage 1120.

[0134] In other embodiments, the first water passage 1120 can be divided into an upper section and a lower section, and a stepped end face is formed between the upper section and the lower section. The first sealing ring 53 abuts against the stepped end face to close the first water passage 1120.

[0135] In one embodiment, the outer wall of the first water-stopping base 51 is provided with an abutment portion, which is located above the first sealing ring 53. The outer diameter of the abutment portion gradually decreases from bottom to top, and the abutment portion can abut against the transition section 11201 to restrict the first elastic water-stopping structure 5 to the first water passage 1120. Thus, when the first elastic water-stopping structure 5 moves upward to the first water-stopping position, the abutment portion abuts against the transition section 11201, which can reliably prevent the first elastic water-stopping structure 5 from disengaging from the first water passage 1120, improving the connection reliability between the first elastic water-stopping structure 5 and the mounting base 1. Secondly, the abutment portion abuts against the transition section 11201 to achieve a certain sealing effect, thereby improving the reliability of water-stopping.

[0136] See Figure 10 In one embodiment, the first water-stopping base 51 has a water passage 511 located above the first sealing ring 53. The lower end of the water passage 511 penetrates the outer wall of the first water-stopping base 51 and the upper end of the first water-stopping base 51. When the first elastic water-stopping structure 5 is in the first connected position, the lower end of the water passage 511 is connected to the first water passage 1120, and the upper end of the water passage 511 is connected to the second water passage 25. Thus, when the first elastic water-stop structure 5 and the second elastic water-stop structure 6 abut against each other, and the first elastic water-stop structure 5 is in the first connecting position and the second elastic water-stop structure 6 is in the second connecting position, the first water-passing channel 1120 and the second water-passing channel 25 can be connected through the water-passing channel 511. Since the water-passing channel 511 is provided on the first water-stop base 51, the cross-sectional area of ​​the water-passing channel 511 can be close to the cross-sectional area of ​​the first water-stop base 51, which can increase the water flow rate and thus improve the water inlet and outlet efficiency.

[0137] In other embodiments, the aforementioned water passage 511 may also be provided between the outer wall of the first water-stopping base 51 and the first water passage 1120.

[0138] See Figure 10 In one embodiment, the filter element 2 is provided with a second sealing ring 7, which is located on one side near the lower end of the second water passage 25.

[0139] When the second elastic water-stop structure 6 is in the second water-stop position, the second elastic water-stop structure 6 abuts against the second sealing ring 7 to close the second water passage 25. When the second elastic water-stop structure 6 is in the second connecting position, the second elastic water-stop structure 6 disengages from the second sealing ring 7 to open the second water passage 25.

[0140] The mounting base 1 is provided with an annular protrusion 1130, which surrounds the upper end of the second water passage 25. When the first elastic water-stop structure 5 is in the first connected position, at least a portion of the annular protrusion 1130 is inserted into the second sealing ring 7 and is press-fitted with the second sealing ring 7. In this way, the gap between the second elastic water-stop structure 6 and the second sealing ring 7 can be sealed by the contact between the second elastic water-stop structure 6 and the second sealing ring 7, thereby reliably closing the second water passage 25 and improving the reliability of water sealing. In addition, when the first water passage 1120 and the second water passage 25 are connected, the press-fit between the annular protrusion 1130 and the second sealing ring 7 can reliably seal the gap between the mounting base 1 and the filter element 2, effectively preventing water leakage during the use of the filter element 2.

[0141] See Figure 10 In one embodiment, the second elastic waterproofing structure 6 includes:

[0142] The second water-stopping substrate 61 is vertically movable and disposed on the second water passage 25. When the second elastic water-stopping structure 6 is in the second water-stopping position, the second water-stopping substrate 61 abuts against the second sealing ring 7 to close the second water passage 25. When the second elastic water-stopping structure 6 is in the second connecting position, the second water-stopping substrate 61 disengages from the second sealing ring 7 to open the second water passage 25.

[0143] The second water-stop elastic element 62 has its upper end connected to the filter element 2 and its lower end connected to the second water-stop base 61. Thus, the second water-stop elastic element 62 provides a driving force to the second water-stop base 61, ensuring reliable contact between the second water-stop base 61 and the second sealing ring 7. This allows the second elastic water-stop structure 6 to be reliably maintained in the second water-stop position, resulting in high structural reliability, simplicity, practicality, and low cost.

[0144] In one embodiment, the sidewall of the second water passage 25 has multiple water inlets located above the second sealing ring 7. These inlets connect to either the raw water chamber or the purified water chamber, and are arranged sequentially around the vertical centerline of the second water passage 25. Because the water inlets are located on the sidewall of the second water passage 25, the water flow rate can be increased, thereby improving the inlet and outlet efficiency.

[0145] In other embodiments, the aforementioned water outlet may be provided at the upper end of the second water passage 25.

[0146] In one embodiment, both the first water-stopping elastic element 52 and the second water-stopping elastic element 62 are springs. Of course, in other embodiments, the first water-stopping elastic element 52 and the second water-stopping elastic element 62 can also be elastic structures such as spring sheets.

[0147] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0148] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0149] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A filtration device, characterized in that, include: The mounting base has a mounting cavity and a mounting opening, the mounting opening is located at the top of the mounting cavity and communicates with the mounting cavity, and the mounting base is provided with a first guide portion, which is located on the side wall of the mounting cavity; The filter element is detachably disposed in the mounting cavity, and the filter element enters and exits the mounting cavity through the mounting port. The filter element is provided with a second guide portion and a first locking portion. The second guide portion is located on the outer side wall of the filter element, and the second guide portion and the first guide portion are slidably engaged to guide the filter element to move vertically along the mounting cavity during the process of inserting the filter element into the mounting cavity. A locking member is rotatably disposed on the mounting base. The locking member has a second locking part, which has a first position that cooperates with the first locking part to restrict the filter element in the mounting cavity. The second locking part also has a second position that disengages from the first locking part to allow the filter element to detach from the mounting cavity. The locking member can rotate downward to switch the second locking part from the second position to the first position, and it can also rotate upward to switch the second locking part from the first position to the second position. During the sliding engagement between the second guide portion and the first guide portion, the first locking portion is located above the second locking portion, and the first locking portion is aligned with the second locking portion; The filter element is provided with a handle located at one end near the top of the filter element. The handle is rotatable relative to the filter element. The handle has a third position that rotates upward to be vertically positioned on the filter element, allowing the filter element to be pulled out of the mounting cavity by hand. The handle also has a fourth position that rotates downward to be horizontally positioned on the filter element, so that the handle is received in the mounting cavity. The handle rotates to switch between the third position and the fourth position. The filtration device further includes: A first elastic reset member, one end of which is connected to the mounting base, and the other end of which is connected to the locking member, is used to provide a driving force to the locking member so that the locking member rotates downward and drives the second locking part to switch from the second station to the first station. The first locking part is provided on the handle; When the handle is in the fourth position, the first locking part cooperates with the second locking part; During the process of inserting the filter element into the mounting cavity by holding the handle, the first locking part abuts against the locking member and pushes the locking member to rotate upward; During the process of pulling the filter element out of the mounting cavity by holding the handle, the first locking part abuts against the locking member and pushes the locking member to rotate upward.

2. The filtration device according to claim 1, characterized in that, The first guide portion has a guide groove, and the second guide portion has a guide protrusion, the guide protrusion being slidably engaged with the guide groove.

3. The filtration device according to claim 2, characterized in that, The first guide portion is further provided with a guide portion, and the guide portion and the guide groove are arranged sequentially from top to bottom along the first guide portion. The guide portion extends obliquely downward toward the upper opening of the guide groove. The guide portion and the guide protrusion are slidably engaged to guide the guide protrusion to be inserted into the guide groove.

4. The filtration device according to claim 1, characterized in that, The mounting base is provided with a first mounting part; The locking component is provided with a second hook-up part; One end of the first elastic reset member is provided with a first hook, and the other end of the first elastic reset member is provided with a second hook. The first hook is hung on the first hooking part to connect the first elastic reset member to the mounting base. The second hook is hung on the second hooking part to connect the first elastic reset member to the locking member.

5. The filtration device according to claim 1, characterized in that, The handle is also provided with a lifting part, which is located on the side near the first locking part. The lifting part abuts against the top edge of the mounting base as the handle rotates upward, so that the bottom of the filter element is separated from the bottom wall of the mounting cavity.

6. The filtration device according to claim 1, characterized in that, Of the mounting base and the handle, one has a slot and the other has an elastic locking element. The elastic locking element is movable and has a locking part that engages with the slot to restrict the handle to the fourth position. The movement of the elastic locking element causes the locking part to engage with or disengage from the slot.

7. The filtration device according to claim 1, characterized in that, The mounting base also has a first water passage, the upper end of which extends to the bottom wall of the mounting cavity, and the lower end of which is used to communicate with a water supply device or a water-using device. The filtration device further includes: The first elastic water-stop structure is vertically movable and disposed on the first water passage. The first elastic water-stop structure has a first water-stop position for closing the first water passage and a first connecting position for opening the first water passage. The first elastic water-stop structure can maintain the first water-stop position under its own elastic action. The bottom of the filter element has a second water passage, which connects to the raw water chamber or the purified water chamber in the filter element. The filtration device further includes: The second elastic water-stop structure is vertically movable in the second water passage. The second elastic water-stop structure has a second water-stop position for closing the second water passage and a second connecting position for opening the second water passage. The second elastic water-stop structure can maintain the second water-stop position under its own elasticity. During the process of inserting the filter element into the mounting cavity, the lower end of the second elastic water-stop structure abuts against the upper end of the first elastic water-stop structure, so that the first elastic water-stop structure is switched from the first water-stop position to the first connecting position by the thrust of the second elastic water-stop structure, and the second elastic water-stop structure is switched from the second water-stop position to the second connecting position by the thrust of the first elastic water-stop structure, so as to connect the second water passage and the first water passage.

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