Water purification equipment

Abstract

The utility model belongs to the technical field of water treatment, and discloses water purification equipment. The water purification equipment comprises a middle frame and at least two filter bottles, at least two mounting grooves are formed in the middle frame, and clamping grooves are formed in the side walls of the mounting grooves; each filter bottle is arranged in the corresponding mounting groove, each filter bottle comprises a bottle body and a gland connected with the bottle body, each gland comprises a gland body and a clamping part arranged on the peripheral surface of the gland body in a protruding mode, the peripheral surface of the gland body is an equal-diameter cylindrical surface, and the clamping parts are connected with the clamping parts. The clamping part can be clamped into the clamping groove along with the rotation of the gland; the middle frame forms an adjacent connection area between the two adjacent installation grooves, and the clamping groove in at least one of the two adjacent installation grooves and the adjacent connection area are arranged in a staggered mode. According to the water purification equipment, the problem that the axial distance between two adjacent filter bottles on the middle frame is large can be solved, the size of the whole machine can be reduced, and the feasibility of mounting the water purification equipment in different environments is improved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a water purification device. Background Technology

[0002] In water purification equipment such as water purifiers, the filtration mechanism plays a major role in filtration. This mechanism includes multiple filter bottles fixed in mounting slots within a central frame, requiring regular cleaning or replacement. In existing filtration mechanisms that use a screw-on method to replace filter bottles, the filter bottle consists of a cap and a body. The cap has a latch that engages with the central frame to secure the filter bottle.

[0003] Existing pressure caps typically have a larger outer diameter at the top than at the bottom, with the clip positioned on the outer circumference of the bottom so that the top of the pressure cap can cover the clip. This structure results in a larger outer diameter for the pressure cap, which in turn increases the axial distance between the two filter bottles fixed to the middle frame, affecting the size of the middle frame and ultimately increasing the overall size of the unit, thus reducing the feasibility of installing the water purification equipment. Utility Model Content

[0004] The purpose of this invention is to provide a water purification device that can solve the problem of large axial spacing between two adjacent filter bottles on the middle frame.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A water purification device, comprising:

[0007] The middle frame is provided with at least two mounting slots, and the side wall of the mounting slot is provided with a snap-fit ​​groove;

[0008] At least two filter bottles are provided, and each of the mounting slots is provided with a filter bottle. Each filter bottle includes a bottle body and a cap connected to the bottle body. The cap includes a cap body and a snap-fit ​​part protruding from the outer peripheral surface of the cap body. The outer peripheral surface of the cap body is a cylindrical surface of equal diameter. The snap-fit ​​part can be rotated with the cap and snap into the snap-fit ​​slot.

[0009] The middle frame forms an adjoining area between two adjacent mounting slots, and in at least one of the two adjacent mounting slots, the snap-fit ​​slot is staggered from the adjoining area.

[0010] As an optional solution for the above-mentioned water purification equipment, the central angle corresponding to the length of the snap-fit ​​portion along the circumference of the cover is the first central angle, and the central angle corresponding to the length of the adjacent area along the circumference of the cover is the second central angle, wherein the second central angle is greater than or equal to the first central angle.

[0011] As an optional solution for the above-mentioned water purification equipment, the cover includes two snap-fit ​​parts, the central angle of the snap-fit ​​parts along the circumference of the cover is 35°-45°, the central angle between two adjacent snap-fit ​​grooves along the circumference of the cover is 55°-75°, and the central angle of the snap-fit ​​grooves along the circumference of the cover is 105°-125°.

[0012] As an optional solution for the above-mentioned water purification equipment, the inner wall of the mounting groove in the adjacent area is the adjacent inner wall;

[0013] The snap-fit ​​part is screwed into the snap-fit ​​groove in the direction that the snap-fit ​​groove is adjacent to the inner wall of the pressure cap along the circumference of the pressure cap; or the snap-fit ​​groove and the inner wall of the adjacent part are spaced apart along the circumference of the pressure cap to form a gap area, and the central angle corresponding to the length of the gap area along the circumference of the pressure cap is the third central angle, and the third central angle is less than or equal to 60°.

[0014] As an optional solution for the above-mentioned water purification equipment, the axial distance between two adjacent mounting slots is H, the outer diameter of the cover body is d, and the radial dimension of the snap-fit ​​part protruding from the cover body is R. Then Hd = N*R, where N is 0.5-1.5.

[0015] As an optional solution for the above-mentioned water purification equipment, the snap-fit ​​groove includes a sliding section and a snap-fit ​​section arranged and connected along the circumference of the mounting groove. The sliding section passes through the top surface of the middle frame along the axial direction of the mounting groove. The snap-fit ​​section is connected to the bottom end of the sliding section. The snap-fit ​​part can enter the snap-fit ​​section from the sliding section.

[0016] As an optional solution for the above-mentioned water purification equipment, the snap-fit ​​section extends obliquely towards the bottle body along the axial direction of the cap, in the direction of screwing the snap-fit ​​part into the snap-fit ​​groove.

[0017] Along the direction from the sliding section to the snap-fit ​​section, the snap-fit ​​groove extends obliquely towards the bottom end along its axial direction.

[0018] As an optional solution for the above-mentioned water purification equipment, the pressure cap and the filter bottle are detachably connected and can rotate relative to each other.

[0019] As an optional solution for the above-mentioned water purification equipment, the top of the bottle body is provided with a boss, the outer peripheral surface of the boss is provided with a groove extending circumferentially thereon, the top edge of the boss is provided with an inlet notch, the inlet notch communicates with the groove, the cap body is provided with a limiting part, the limiting part can enter the groove through the inlet notch and can slide along the groove.

[0020] As an optional solution for the above-mentioned water purification equipment, the outer peripheral surface of the bottle body is provided with a protrusion, the mounting groove includes an upper groove section and a lower groove section that are connected, the inner diameter of the upper groove section is larger than the inner diameter of the lower groove section, the snap-fit ​​groove is located on the inner wall of the upper groove section, the inner diameter of the lower groove section is adapted to the outer diameter of the bottle body, and the inner wall of the lower groove section is provided with a guide groove extending downward from the top, and the protrusion can slide into the guide groove.

[0021] The beneficial effects of this utility model are:

[0022] In the water purification device provided by this utility model, the outer circumferential surface of the cap body is set as a cylindrical surface of equal diameter. The cap body does not need to block the snap-fit ​​part along the axial direction, thereby reducing the size of the cap body. Correspondingly, the inner diameter of the mounting groove will also be reduced, thereby reducing the axial distance between the two filter bottles on the middle frame and reducing the size of the filtration mechanism. The middle frame forms an adjoining area between two adjacent mounting grooves. The adjoining area is the physical position between the two mounting grooves. The snap-fit ​​grooves in the two adjacent mounting grooves are staggered from the adjoining area, thereby reducing the size of the adjoining area and reducing the axial distance between the two filter bottles. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the water purification equipment provided by this utility model when it is not assembled;

[0024] Figure 2 This is a partial structural diagram of the middle frame provided by this utility model;

[0025] Figure 3 This is a first schematic diagram of the pressure cap provided by this utility model;

[0026] Figure 4 This is a top view of the pressure cap provided by this utility model;

[0027] Figure 5 This is a partial structural schematic diagram of the water purification equipment provided by this utility model;

[0028] Figure 6 This is a second schematic diagram of the pressure cap provided by this utility model.

[0029] In the picture:

[0030] 100. Filter bottle; 110. Bottle body; 111. Boss; 112. Slot; 113. Protrusion; 120. Cap; 121. Cap body; 122. Snap-fit ​​part; 123. Tightening part; 124. Limiting part; 200. Middle frame; 210. Mounting groove; 211. Upper groove section; 212. Lower groove section; 2121. Guide groove; 220. Snap-fit ​​groove; 221. Slide-in section; 222. Snap-fit ​​section; 230. Adjacent area. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment provides a water purification device, which includes a filtration mechanism for filtering water to improve drinking water hygiene and ensure drinking safety. The water purification device can be a water purifier, water purifier machine, or water purifier dispenser.

[0036] like Figure 1As shown, the filtration mechanism includes a middle frame 200 and at least two filter bottles 100. The middle frame 200 has mounting slots 210, the number of which is the same as the number of filter bottles 100. Each mounting slot 210 contains one filter bottle 100, integrating at least two filter bottles 100 into a central control unit, resulting in a high degree of modularity in the filtration mechanism. The at least two filter bottles 100 are connected in series to perform multi-stage filtration of water, improving the water purification effect.

[0037] In this embodiment, there are two filter bottles 100, which are connected in series to achieve secondary filtration. In other embodiments, there may be three, four or more filter bottles 100.

[0038] To facilitate the assembly and disassembly of the filter bottle 100, a snap-fit ​​groove 220 is provided on the side wall of the mounting groove 210. The filter bottle 100 includes a snap-fit ​​part 122, which can be rotatably inserted into the snap-fit ​​groove 220 to prevent the filter bottle 100 from coming out of the snap-fit ​​groove 220. Specifically, the filter bottle 100 includes a bottle body 110 and a cap 120 connected to the bottle body 110. The cap 120 includes a cap body 121 and a snap-fit ​​part 122 protruding from the outer peripheral surface of the cap body 121. The snap-fit ​​part 122 is used to cooperate with the snap-fit ​​groove 220.

[0039] Combination Figure 1 and Figure 2 As shown, the snap-fit ​​groove 220 includes a sliding section 221 and a snap-fit ​​section 222 arranged circumferentially and connected to the mounting groove 210. The sliding section 221 passes through the top surface of the middle frame 200 along the axial direction of the mounting groove 210, and the snap-fit ​​section 222 is connected to the bottom end of the sliding section 221. When fixing the filter bottle 100 and the middle frame 200, the snap-fit ​​part 122 on the filter bottle 100 is aligned with the sliding section 221, and the filter bottle 100 is inserted into the mounting groove 210. As the filter bottle 100 is gradually inserted into the mounting groove 210, the snap-fit ​​part 122 will enter the sliding section 221. Then, the pressure cap 120 is rotated, causing the snap-fit ​​part 122 on the pressure cap 120 to move circumferentially along the mounting groove 210, thereby moving from the sliding section 221 into the snap-fit ​​section 222, completing the assembly.

[0040] It is understandable that after the filter bottle 100 is installed into the mounting groove 210, the snap-fit ​​part 122 is located between the two side walls of the snap-fit ​​section 222. The two side walls are arranged opposite each other in the vertical direction, which has a limiting effect on the snap-fit ​​part 122, preventing the snap-fit ​​part 122 from separating from the snap-fit ​​section 222 along the axial direction of the mounting groove 210, thereby achieving the purpose of fixing the filter bottle 100 and preventing the filter bottle 100 from coming out of the mounting groove 210.

[0041] When it is necessary to disassemble the filter bottle 100, rotate the pressure cap 120 in the opposite direction so that the snap-fit ​​part 122 enters the sliding section 221 from the snap-fit ​​section 222. Then the filter bottle 100 can be taken out. Disassembly is convenient and the operation is simple.

[0042] To facilitate the disassembly and assembly of the pressure cap 120, a screwing part 123 is provided on the top surface of the pressure cap body 121. The screwing part 123 drives the pressure cap body 121 to rotate, simplifying the operation.

[0043] To improve the fixing effect between the filter bottle 100 and the middle frame 200, in this embodiment, the number of snap-fit ​​parts 122 on the cap body 121 is two. The two snap-fit ​​parts 122 are evenly spaced along the circumference of the cap body 121. Each snap-fit ​​part 122 can be fitted with a snap-fit ​​groove 220 to increase the fixing position and contact area between the filter bottle 100 and the middle frame 200, thereby improving the fixing effect.

[0044] In other embodiments, the number of snap-fit ​​portions 122 may also be three, four or more.

[0045] In the prior art, the outer diameter of the cap 120 is designed to be larger at the top and smaller at the bottom, with the snap-fit ​​part 122 located at the bottom of the cap 120, so that the snap-fit ​​part 122 is completely below the top of the cap 120 in the axial direction, thus blocking the snap-fit ​​groove 220 by the top of the cap 120. However, this structure increases the size of the cap 120, with the outer diameter of the top of the cap 120 being larger than the outer diameter of the bottle body 110, and the difference in outer diameter is generally around 20mm. This results in a larger axial distance between the two filter bottles 100 on the middle frame 200, leading to a larger size of the middle frame 200, which in turn results in a larger size of the filtration mechanism and the overall water purification equipment, greatly reducing the feasibility of installing the water purification equipment.

[0046] To solve the above problems, combined with Figure 1 and Figure 3 As shown, in this embodiment, the outer peripheral surface of the cap body 121 is a cylindrical surface of equal diameter, and the snap-fit ​​portion 122 protrudes from the cylindrical surface. By setting the outer peripheral surface of the cap body 121 to a cylindrical surface of equal diameter, the cap body 121 does not need to block the snap-fit ​​portion 122 along the axial direction, thereby reducing the size of the cap body 121. Correspondingly, the inner diameter of the mounting groove 210 will also be reduced, thereby reducing the axial distance between the two filter bottles 100 on the middle frame 200, reducing the size of the filtration mechanism and the overall water purification equipment, thereby reducing the requirements of the water purification equipment for installation space and increasing the feasibility of installing the water purification equipment in different environments.

[0047] In this embodiment, the outer diameter of the capping body 121 can be adapted to the outer diameter of the bottle body 110. Specifically, the outer diameter of the capping body 121 can be equal to or slightly larger than the outer diameter of the bottle body 110.

[0048] To make the distribution of filter bottles 100 on the middle frame 200 more compact, the middle frame 200 forms an adjoining area 230 between two adjacent mounting slots 210. The adjoining area 230 is the physical position between the two mounting slots 210. The snap-fit ​​slots 220 in the two adjacent mounting slots 210 are staggered from the adjoining area 230, thereby reducing the size of the adjoining area 230 and reducing the axial distance between the two filter bottles 100.

[0049] It should be noted that the snap-fit ​​grooves 220 in the two adjacent mounting slots 210 are offset from the adjacent area 230. This means that the inner wall of the mounting slot 210 containing the snap-fit ​​groove 220 is located outside the position of the adjacent area 230. The adjacent area 230 is essentially the side wall portion shared by the two adjacent mounting slots 210. The dimensions of the adjacent area 230 along the arrangement direction of the two mounting slots 210 directly affect the axial spacing between the two mounting slots 210. The snap-fit ​​groove 220 is located on the inner wall outside the shared side wall portion. This allows the snap-fit ​​part 122 to cooperate with the snap-fit ​​groove 220 to fix the filter bottle 100 and the middle frame 200. The snap-fit ​​part 122 is located outside the adjacent area 230, and the adjacent area 230 does not need to accommodate the snap-fit ​​part 122. This reduces the radial dimension of the adjacent area 230 along the mounting slot 210, allowing the two mounting slots 210 to be closer together, resulting in a more compact structure and smaller overall size of the filter mechanism.

[0050] In other embodiments, among two adjacent mounting slots 210, only the snap-fit ​​groove 220 in one mounting slot 210 may be staggered from the adjacent area 230, and the snap-fit ​​groove 220 in the other mounting slot 210 may extend into the adjacent area 230. Alternatively, the size of the adjacent area 230 may be reduced to a certain extent to reduce the axial distance between the two filter bottles 100.

[0051] In one embodiment, the axial distance between two adjacent mounting slots 210 is H, the outer diameter of the cap body 121 is d, and the radial dimension of the snap-fit ​​portion 122 protruding from the cap body 121 is R. Then Hd = N * R, where N is 0.5-1.5. Through the above arrangement, while ensuring the middle frame 200 has a certain strength, the size of the adjacent area 230 can be minimized, thereby making the filter bottles 100 more compactly distributed on the middle frame 200, thus reducing the size of the filtration mechanism and water purification equipment. For example, N can be 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, or 1.5.

[0052] In one embodiment, the inner wall of the mounting groove 210 within the adjacent area 230 is the adjacent inner wall. Along the direction in which the snap-fit ​​part 122 is screwed into the snap-fit ​​groove 220, the snap-fit ​​groove 220 and the adjacent inner wall are adjacent to each other circumferentially along the pressure cap 120. That is, along the direction in which the snap-fit ​​part 122 is screwed into the snap-fit ​​groove 220, one end of the snap-fit ​​groove 220 is connected to the adjacent inner wall. This arrangement allows the snap-fit ​​part 122 and the adjacent area 230 to be staggered, reducing the radial dimension of the adjacent area 230 along the mounting groove 210. After the snap-fit ​​part 122 is screwed into the snap-fit ​​groove 220 and the filter bottle 100 and the middle frame 200 are fixed, the snap-fit ​​part 122 and the adjacent inner wall are connected circumferentially along the pressure cap 120. This facilitates the rational use of the circumferential inner wall space of the snap-fit ​​groove 220, maximizing the length of the snap-fit ​​part 122 along the circumferential direction of the pressure cap 120, thereby improving the fixing effect.

[0053] It should be noted that the direction in which the snap-fit ​​part 122 screws into the snap-fit ​​groove 220 refers to the direction along the circumference of the pressure cap 120 from the sliding section 221 to the snap-fit ​​section 222. Along the direction in which the snap-fit ​​part 122 screws into the snap-fit ​​groove 220, one end of the snap-fit ​​groove 220 is in contact with the adjacent inner wall; specifically, this means that the snap-fit ​​section 222 is in contact with the adjacent inner wall.

[0054] In another embodiment, the snap-fit ​​groove 220 is screwed into the snap-fit ​​portion 122 along the direction in which it is screwed into the snap-fit ​​groove 220, and the snap-fit ​​groove 220 and the adjacent inner wall are spaced apart circumferentially along the cover 120 to form a gap region. Specifically, the gap region is located between the snap-fit ​​portion 222 and its adjacent inner wall.

[0055] By setting an interval area, the distance between the snap-fit ​​part 122 and the adjacent area 230 after the filter bottle 100 and the middle frame 200 are fixed can be increased, thereby minimizing the radial dimension of the adjacent area 230 along the mounting groove 210 to make the structure more compact.

[0056] Optionally, the central angle corresponding to the length of the interval region along the circumference of the pressure cap 120 is a third central angle, which is less than or equal to 60°. Preferably, the third central angle is 15°-35° to ensure the length of the snap-fit ​​portion 122 along the circumference of the pressure cap 120. Exemplarily, typical non-limiting values ​​for the third central angle are 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 55°, and 60°.

[0057] In one embodiment, the central angle corresponding to the length of the snap-fit ​​portion 122 along the circumference of the pressure cover 120 is the first central angle, and the central angle corresponding to the length of the adjacent area 230 along the circumference of the pressure cover 120 is the second central angle, wherein the second central angle is greater than or equal to the first central angle. By setting the second central angle to be greater than or equal to the first central angle, the distance between the snap-fit ​​groove 220 and the adjacent area 230 can be increased, ensuring that the middle frame 200 at the adjacent area 230 has a certain thickness, thereby ensuring the structural strength of the middle frame 200.

[0058] like Figure 4 As shown, the cap body 121 is provided with two snap-fit ​​parts 122. The central angle A corresponding to the length of the snap-fit ​​part 122 along the circumference of the cap 120 is 35°-45°. Within this range, on the one hand, it can ensure that the snap-fit ​​part 122 and the middle frame 200 have a larger mating dimension, thereby improving the fixing effect between the filter bottle 100 and the middle frame 200; on the other hand, the central angle corresponding to the minimum movement path of each snap-fit ​​part 122 between the two positions of fully engaging with the snap-fit ​​section 222 and fully disengaging from the snap-fit ​​section 222 is 70°-90°, which can ensure that the central angle corresponding to the distance between the two corresponding snap-fit ​​grooves 220 is 90°-110°. That is to say, the central angle corresponding to the contact area 230 is 90°-110°, so as to ensure that the contact area 230 has sufficient strength.

[0059] For example, the central angle A corresponding to the length of the snap-fit ​​portion 122 along the circumferential direction of the pressure cover 120 is 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, or 45°.

[0060] To ensure the fixation effect of filter bottle 100 and middle frame 200, the central angle corresponding to the length of snap-fit ​​section 222 along the circumference of cap 120 can be equal to or slightly larger than the central angle corresponding to the length of snap-fit ​​part 122 along the circumference of cap 120. This ensures that snap-fit ​​part 122 can fully enter snap-fit ​​section 222, increasing the mating area between snap-fit ​​part 122 and middle frame 200, thereby making the fixation effect of filter bottle 100 and middle frame 200 more stable.

[0061] To reduce assembly difficulty, the central angle corresponding to the length of the sliding section 221 along the circumference of the cap 120 can be greater than the central angle corresponding to the length of the snap-fit ​​section 222 along the circumference of the cap 120. In other words, the length of the sliding section 221 along the circumference of the cap 120 is greater than the length of the snap-fit ​​part 122 along the circumference of the cap 120, allowing the snap-fit ​​part 122 some room to move within the sliding section 221. This facilitates the snap-fit ​​part 122 entering the sliding section 221 during the assembly of the filter bottle 100 and the middle frame 200, thus reducing assembly difficulty.

[0062] In addition, designing the length of the sliding section 221 along the circumference of the cover 120 to be greater than the length of the snap-fit ​​part 122 along the circumference of the cover 120 can also improve the structural tolerance and avoid the problem that the snap-fit ​​part 122 cannot be assembled with the snap-fit ​​groove 220 due to the dimensional error of the snap-fit ​​groove 220 or the snap-fit ​​part 122.

[0063] Optionally, the central angle corresponding to the length of the snap-fit ​​groove 220 along the circumference of the cover 120 is 105°-125°, wherein the central angle corresponding to the sliding section 221 is 70°-80° and the central angle corresponding to the snap-fit ​​section 222 is 35°-45°.

[0064] For example, the central angle corresponding to the length of the snap-fit ​​groove 220 along the circumferential direction of the cover 120 can be 105°, 106°, 107°, 108°, 109°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 120°, 121°, 122°, 123°, 124°, or 125°.

[0065] For example, the central angles corresponding to the length of the sliding section 221 along the circumference of the cover 120 are 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, and 80°.

[0066] For example, the central angles corresponding to the length of the snap-fit ​​segment 222 along the circumferential direction of the cover 120 are 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, and 45°.

[0067] To reduce processing difficulty, in this embodiment, two snap-fit ​​portions 122 are provided on the cap body 121, and the two snap-fit ​​portions 122 are arranged opposite each other along the radial direction of the cap body 121; correspondingly, as shown... Figure 5 As shown, two snap-fit ​​slots 220 are provided on the side wall of the mounting slot 210. The two snap-fit ​​slots 220 are symmetrically arranged to ensure that the two snap-fit ​​parts 122 enter or disengage from the corresponding snap-fit ​​section 222 simultaneously.

[0068] Optionally, the central angle corresponding to the length between two adjacent snap-fit ​​slots 220 is 55°-75° to ensure the strength of the contact area 230. For example, the central angles corresponding to the length between two adjacent snap-fit ​​slots 220 are 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74°, and 75°.

[0069] In some embodiments, such as Figure 3 and Figure 4 The two snap-fit ​​parts 122 on the pressure cap 120 are located on opposite sides of the screw-on part 123, and the two snap-fit ​​parts 122 are centrally symmetrically arranged.

[0070] Combination Figure 1 and Figure 2As shown, the outer peripheral surface of the bottle body 110 is provided with a protrusion 113. The mounting groove 210 includes an upper groove section 211 and a lower groove section 212 that are connected. The inner diameter of the upper groove section 211 is larger than the inner diameter of the lower groove section 212. The snap-fit ​​groove 220 is located on the inner wall of the upper groove section 211. The inner diameter of the lower groove section 212 is adapted to the outer diameter of the bottle body 110. The inner wall of the lower groove section 212 is provided with a guide groove 2121 extending downward from the top. The protrusion 113 can slide into the guide groove 2121.

[0071] Specifically, the connection between the upper groove section 211 and the lower groove section 212 forms a connecting surface, and the guide groove 2121 extends downward from the connecting surface so that the top surface of the guide groove 2121 and the side facing the center of the mounting groove 210 both form openings. When assembling the filter bottle 100, the protrusion 113 on the filter bottle 100 is aligned with the guide groove 2121, and the filter bottle 100 is placed downward, so that the protrusion 113 enters the guide groove 2121 from the top of the guide groove 2121, thereby playing a guiding role in the installation.

[0072] In addition, the protrusion 113, in conjunction with the guide groove 2121, can restrict the filter bottle 100 from rotating or shaking within the mounting groove 210, thereby improving the stability of the filter bottle 100 after installation.

[0073] In this embodiment, the bottle body 110 is vertically inserted into the mounting groove 210 to ensure that the protrusion 113 cooperates with the guide groove 2121. The cap 120 needs to be fixed to the middle frame 200 by rotation. In order to avoid interference between the cap 120 and the bottle body 110 during assembly, the cap 120 and the filter bottle 100 are detachably connected and can rotate relative to each other. When assembling the filter bottle 100, align the protrusion 113 on the bottle body 110 with the guide groove 2121, and align the snap-fit ​​part 122 on the cap 120 with the sliding section 221. Then, move the filter bottle 100 downwards so that it is inserted into the mounting groove 210. After the bottle body 110 is in place, the protrusion 113 can abut against the bottom surface of the guide groove 2121, and the snap-fit ​​part 122 enters the bottom of the sliding section 221. Rotate the cap 120, and the bottle body 110 will stop under the action of the protrusion 113 and the guide groove 2121. The snap-fit ​​part 122 on the cap 120 will move from the sliding section 221 into the snap-fit ​​section 222, preventing the filter bottle 100 from coming out of the mounting groove 210, thus completing the assembly of the filter bottle 100.

[0074] To achieve axial fixation of the bottle body 110 and the cap 120 while allowing relative rotation, combined with Figure 1 and Figure 6As shown, a boss 111 is provided on the top of the bottle body 110, and a groove 112 extending circumferentially is provided on the outer peripheral surface of the boss 111. An inlet notch is provided on the top edge of the boss 111, and the inlet notch communicates with the groove 112. A limiting part 124 is also provided on the cap body 121. The limiting part 124 can enter the groove 112 through the inlet notch and can slide along the groove 112. Through the cooperation of the groove 112 and the limiting part 124, the bottle body 110 and the cap 120 can be constrained to move relative to each other in the axial direction. The limiting part 124 can slide along the groove 112, so that the cap 120 can rotate relative to the bottle body 110 to meet the disassembly and assembly requirements of the filter bottle 100.

[0075] In this embodiment, a central groove is provided on the bottom surface of the capping body 121. The central groove is used to avoid the protrusion 111 on the bottle body 110. The limiting part 124 is provided on the inner wall of the central groove so as to facilitate the engagement of the slot 112.

[0076] Optionally, at least two limiting parts 124 may be provided, and the at least two limiting parts 124 are evenly spaced along the circumference of the central groove to improve the connection effect between the cap 120 and the bottle body 110.

[0077] In this embodiment, the snap-fit ​​portion 122 is parallel to the cross-section of the cap body 121. That is, the snap-fit ​​portion 122 extends in a plane perpendicular to the axis of the cap 120. During the process of fixing the cap 120 to the middle frame 200, the cap 120 rotates in a planar manner without any displacement in the axial direction. The cap 120 rotates relative to the bottle body 110 after the bottle body 110 is inserted into place, thus completing the assembly.

[0078] In other embodiments, the snap-fit ​​portion 122 extends obliquely towards the bottle body 110 along the direction in which it is screwed into the snap-fit ​​groove 220. Correspondingly, the snap-fit ​​groove 220 extends obliquely towards its bottom end along its axial direction in the direction from the sliding section 221 to the snap-fit ​​section 222. With this arrangement, during the process of inserting the bottle body 110 into the mounting groove 210, rotating the cap 120 causes the cap 120 to move towards the bottom of the mounting groove 210 along with the bottle body 110 as it rotates relative to the bottle body 110. In other words, the cap 120 performs a combined motion of planar rotation and linear movement.

[0079] To illustrate the effect of the filtration mechanism in this embodiment on reducing the axial spacing between adjacent filter bottles, a comparative example is used, where the top diameter of the existing capping body is larger than the bottom diameter and the snap-fit ​​part is located at the bottom of the capping body. The axial spacing between adjacent filter bottles in the comparative example and the axial spacing between adjacent filter bottles using the structure in this embodiment are listed below for two different filter bottle models:

[0080] When using filter bottles with a flow rate of 1200G, the outer diameter of the bottle body is 115mm, the outer diameter of the protruding part on the bottle body is 123mm, and the outer diameter of the cap is 133mm. In the comparative example, the outer diameter of the cap is the outer diameter of the top of the cap, and the axial distance between two adjacent filter bottles on the middle frame is 138mm. In this embodiment, the outer diameter of the cap is the outer diameter of the snap-fit ​​part, and the axial distance between two adjacent filter bottles on the middle frame is 128mm.

[0081] When using filter bottles with a flow rate of 400G, the outer diameter of the bottle body is 88mm, the outer diameter of the protruding part on the bottle body is 96mm, and the outer diameter of the cap is 106mm. In the comparative example, the outer diameter of the cap is the outer diameter of the top of the cap, and the axial distance between two adjacent filter bottles on the middle frame is 111mm. In this embodiment, the outer diameter of the cap is the outer diameter of the snap-fit ​​part, and the axial distance between two adjacent filter bottles on the middle frame is 101mm.

[0082] The cap structure provided in this embodiment can reduce the axial distance between the two filter bottles, thereby reducing the overall size of the machine. At the same time, by sharing a smaller axial distance, the caps used for filter bottles in the 400G-1200G flux range and the overall appearance of the machine can be standardized. For example, a 128mm axial distance can be used to standardize the use of a single set of caps and the overall appearance of the machine for filter bottles in the 400G-1200G flux range.

[0083] The assembly process of the above-mentioned filter mechanism is as follows:

[0084] Align the protrusion 113 with the guide groove 2121, and insert the bottle body 110 into the mounting groove 210; during this process, hold the screw-on part 123 to rotate the cap 120, adjust the position of the locking part 122 on the cap 120, so that the locking part 122 can slide into the sliding section 221 of the locking groove 220. At this time, as Figure 1 As shown in the lower filter bottle 100, the screw part 123 extends approximately horizontally, that is, the screw part 123 is perpendicular to the arrangement direction of the two mounting slots 210.

[0085] After the bottle body 110 is inserted into the mounting groove 210, the pressure cap 120 is rotated by the screwing part 123, causing the locking part 122 to slide from the sliding section 221 into the locking section 222, thus fixing the filter bottle 100 and the middle frame 200. At this time, the screwing part 123 is rotated to a vertical position, and the screwing part 123 extends along the arrangement direction of the two mounting grooves 210.

[0086] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water purification device, characterized in that, include: A middle frame (200) is provided with at least two mounting slots (210), and the side wall of the mounting slot (210) is provided with a snap-fit ​​slot (220); At least two filter bottles (100) are provided in each of the mounting slots (210). Each filter bottle (100) includes a bottle body (110) and a cap (120) connected to the bottle body (110). The cap (120) includes a cap body (121) and a snap-fit ​​portion (122) protruding from the outer peripheral surface of the cap body (121). The outer peripheral surface of the cap body (121) is a cylindrical surface of equal diameter. The snap-fit ​​portion (122) can be rotated and snapped into the snap-fit ​​slot (220) with the cap (120). The middle frame (200) forms an adjacent area (230) between two adjacent mounting slots (210). In at least one of the two adjacent mounting slots (210), the snap-fit ​​slot (220) is staggered from the adjacent area (230).

2. The water purification equipment according to claim 1, characterized in that, The central angle corresponding to the length of the snap-fit ​​portion (122) along the circumference of the cover (120) is the first central angle, and the central angle corresponding to the length of the adjacent area (230) along the circumference of the cover (120) is the second central angle, and the second central angle is greater than or equal to the first central angle.

3. The water purification equipment according to claim 2, characterized in that, The cover (120) includes two snap-fit ​​portions (122). The central angle of the snap-fit ​​portion (122) along the circumferential length of the cover (120) is 35°-45°. The central angle between two adjacent snap-fit ​​grooves (220) along the circumferential length of the cover (120) is 55°-75°. The central angle of the snap-fit ​​groove (220) along the circumferential length of the cover (120) is 105°-125°.

4. The water purification equipment according to claim 1, characterized in that, The inner wall of the mounting groove (210) within the adjacent area (230) is the adjacent inner wall; The snap-fit ​​part (122) is screwed into the snap-fit ​​groove (220) in the direction that the snap-fit ​​groove (220) is adjacent to the inner wall of the cover (120) in the circumferential direction; or the snap-fit ​​groove (220) and the inner wall of the cover (120) are spaced apart in the circumferential direction to form a gap area, and the central angle corresponding to the length of the gap area along the circumferential direction of the cover (120) is the third central angle, and the third central angle is less than or equal to 60°.

5. The water purification equipment according to claim 1, characterized in that, The axial distance between two adjacent mounting slots (210) is H, the outer diameter of the cover body (121) is d, and the radial dimension of the snap-fit ​​part (122) protruding from the cover body (121) is R. Then Hd = N*R, where N is 0.5-1.

5.

6. The water purification equipment according to any one of claims 1-5, characterized in that, The snap-fit ​​groove (220) includes a sliding section (221) and a snap-fit ​​section (222) arranged and connected circumferentially along the mounting groove (210). The sliding section (221) passes through the top surface of the middle frame (200) along the axial direction of the mounting groove (210). The snap-fit ​​section (222) is connected to the bottom end of the sliding section (221). The snap-fit ​​part (122) can enter the snap-fit ​​section (222) from the sliding section (221).

7. The water purification equipment according to claim 6, characterized in that, Along the direction in which the snap-fit ​​portion (122) is screwed into the snap-fit ​​groove (220), the snap-fit ​​segment (222) extends obliquely toward the bottle body (110) along the axial direction of the cap (120); Along the direction from the sliding section (221) to the snap-fit ​​section (222), the snap-fit ​​groove (220) extends obliquely towards the bottom end along its axial direction.

8. The water purification equipment according to any one of claims 1-5, characterized in that, The cap (120) and the filter bottle (100) are detachably connected and can rotate relative to each other.

9. The water purification equipment according to claim 8, characterized in that, The top of the bottle body (110) is provided with a boss (111), and the outer peripheral surface of the boss (111) is provided with a slot (112) extending circumferentially therein. The top edge of the boss (111) is provided with an inlet notch, which communicates with the slot (112). The cap body (121) is provided with a limiting part (124), which can enter the slot (112) through the inlet notch and slide along the slot (112).

10. The water purification equipment according to any one of claims 1-5, characterized in that, The outer circumferential surface of the bottle body (110) is provided with a protrusion (113). The mounting groove (210) includes an upper groove section (211) and a lower groove section (212) that are connected. The inner diameter of the upper groove section (211) is larger than the inner diameter of the lower groove section (212). The snap-fit ​​groove (220) is located on the inner wall of the upper groove section (211). The inner diameter of the lower groove section (212) is adapted to the outer diameter of the bottle body (110). The inner wall of the lower groove section (212) is provided with a guide groove (2121) extending downward from the top. The protrusion (113) can slide into the guide groove (2121).

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