Connection device for a water treatment device and water treatment device

Abstract

The application relates to the technical field of water treatment equipment, and relates to a connecting device for a water treatment equipment and the water treatment equipment. The connecting device comprises a connecting seat and a locking assembly; the locking assembly is rotationally connected to the connecting seat, and the locking assembly is provided with a mounting groove for clamping a filter core assembly or / and a locking piece for clamping the filter core assembly. In the connecting device of the embodiment, through cooperation of the locking assembly and the filter core assembly, after the filter core assembly is engaged with the connecting seat, the locking assembly can firmly fix the filter core assembly through the mounting groove and / or the locking piece. Compared with a thread screwing, buckle or spring pressing mode adopted by a traditional filter core, the connecting device of the embodiment is simpler in structure, the number of parts is reduced, and therefore manufacturing cost and maintenance difficulty are reduced.

Description

Technical Field

[0001] This application relates to the field of water treatment equipment technology, and in particular to a connection device for water treatment equipment and water treatment equipment. Background Technology

[0002] In existing water treatment equipment, filter cartridges are mostly installed and removed using methods such as threaded tightening, snap-fit, or spring clamping. While these connection methods can secure the filter cartridges, they have certain limitations in practical applications. For example, threaded connections are cumbersome to install and remove and require ample operating space; snap-fit ​​or spring-loaded connections have complex structures with numerous parts, increasing manufacturing costs and maintenance difficulty. Utility Model Content

[0003] In view of this, this application provides a connection device and a water treatment device for water treatment equipment, which solves the problems of inconvenient operation and complex structure of filter cartridges in existing water treatment equipment.

[0004] The first aspect of this application provides a connection device for a water treatment equipment for mounting an external filter cartridge assembly, comprising: Connector; and A locking assembly, rotatably connected to the connecting seat, and having a mounting groove for engaging with the filter element assembly and / or a locking element for clamping the filter element assembly.

[0005] In one possible implementation, the connector has a hinge hole and a connection slot communicating with the hinge hole, and the filter element assembly is detachably connected to the connector; the locking assembly can be inserted into the hinge hole from the connection slot, and the locking assembly is rotatably connected to the hinge hole.

[0006] In one possible implementation, the locking assembly includes a locking member and a hinge member. The hinge member includes a shaft portion and a positioning protrusion. The shaft portion is connected to the locking member, and the locking member is used to fix the filter element assembly and the connecting seat. The shaft portion passes through the hinge hole and is rotatably connected to the connecting seat. The positioning protrusion is disposed on the outer peripheral wall of the shaft portion. When the shaft portion rotates to the point where the positioning protrusion corresponds to the connecting slot, the positioning protrusion can pass through the connecting slot. When the shaft portion is connected to the hinge hole, the positioning protrusion and the locking member are respectively located on opposite axial sides of the hinge hole.

[0007] In one possible implementation, the locking assembly further includes a reset member connected to both the hinge and the connecting seat, and the reset member is used to drive the locking member to rotate to a preset position.

[0008] In one possible implementation, the connecting seat includes a seat body, a hinge seat, and a fixing part. The hinge seat and the fixing part are respectively disposed on the seat body, and the hinge hole and the connecting slot are disposed on the hinge seat. The fixing part has a first fixing slot, the shaft part has a second fixing slot, and the opposite ends of the reset member are respectively accommodated in the first fixing slot and the second fixing slot.

[0009] In one possible implementation, the shaft portion is further provided with a receiving groove communicating with the second fixing groove. The reset member includes a first fixing segment, a second fixing segment, and an elastic portion. The elastic portion is connected to the first fixing segment and the second fixing segment respectively. The elastic portion is housed in the receiving groove. The first fixing segment engages with the first fixing groove, and the second fixing segment engages with the second fixing groove.

[0010] In one possible implementation, the elastic part is a helical structure; And / or, the first fixing groove includes a connected inlet groove and a fixing groove, the fixing groove being located inside the inlet groove, and the first fixing segment being movable from the inlet groove to the fixing groove and engaging with the fixing groove.

[0011] A second aspect of this application provides a water treatment device, comprising: The connecting device as described in any of the preceding claims; and A filter element assembly is detachably connected to the connector, and the locking element is used to secure the filter element assembly and the connector.

[0012] In one possible implementation, the filter element assembly includes a filter element, a filter element housing, and a filter element cover. The filter element cover is connected to the filter element housing and is used to accommodate the filter element. A limiting surface is provided on the side of the filter element cover away from the filter element housing, and the limiting surface is set at an angle to the axial direction of the filter element housing. The filter element cover is used to connect with the connection seat of the water treatment equipment, and the limiting surface is used to engage with the clamping assembly of the water treatment equipment.

[0013] In one possible implementation, the filter cover is provided with a mounting groove that extends radially along the filter cover and at least partially penetrates the outer peripheral wall of the filter cover, and the limiting surface is located on one side wall of the mounting groove. And / or, the filter element cover includes a cover body and a connecting tube, the cover body is connected to the filter element cylinder, the connecting tube is used to connect with the connecting seat, the limiting surface is provided on the cover body, and the distance between the end of the connecting tube away from the cover body and the limiting surface is 15-90mm.

[0014] Implementing the embodiments of this application has the following beneficial effects: In the connection device of this embodiment, by setting a locking component to cooperate with the filter element assembly, the locking component can firmly fix the filter element assembly through the mounting groove and / or locking element after the filter element assembly is engaged with the connecting seat. Compared with the traditional filter element tightening by thread, snap or spring compression, the connection device of this embodiment has a simpler structure and fewer parts, thereby reducing manufacturing costs and maintenance difficulty.

[0015] Meanwhile, in this embodiment, the locking component is rotatably connected to the connecting seat. Users can quickly install and remove the filter element assembly simply by rotating the locking component, simplifying the operation process and eliminating the need for a large operating space. This solves the problems of cumbersome installation and removal and high space requirements of existing threaded connections, improving the convenience and efficiency of installation and removal.

[0016] Furthermore, through the cooperation of the mounting slot and locking components, the filter element assembly can achieve a stable and reliable fixed connection, avoiding the defects of snap-on or spring-type connection structures that are complex and prone to loosening, thereby ensuring the firmness of the connection and the safe operation of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of the water treatment equipment in an embodiment of this utility model is shown; Figure 2 A partial structural diagram of the water treatment equipment in use, as shown in an embodiment of this utility model, is illustrated. Figure 3 An exploded view of the connecting device in an embodiment of the present invention is shown; Figure 4 A top view of the filter cover in an embodiment of the present invention is shown.

[0019] Figure label: 10. Water treatment equipment; 100. Connecting device; 110. Connecting seat; 111. Seat body; 112. Pipe section; 113. Hinge seat; 1131. Hinge hole; 1132. Connecting slot; 114. Fixing part; 11411. Inlet slot; 11412. Fixing slot; 1142. Fixing hook; 120. Locking assembly; 121. Locking member; 1211. First locking part; 1212. Second locking part; 122. Hinge member; 1221. Shaft part; 12211. Second fixing slot; 12212. Receiving slot; 1222. Positioning protrusion; 123. Reset member; 1231. First fixing section; 1232. Second fixing section; 1233. Elastic part; 130. Snap-fit ​​structure; 200, Filter element assembly; 210, Filter element cylinder; 220, Filter element cover; 221, Cover body; 2211, Mounting groove; 22111, Guide slope; 222, Connecting pipe section. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In existing water treatment equipment, filter cartridges are mostly installed and removed using methods such as threaded tightening, snap-fit, or spring clamping. While these connection methods can secure the filter cartridges, they have certain limitations in practical applications. For example, threaded connections are cumbersome to install and remove and require ample operating space; snap-fit ​​or spring-loaded connections have complex structures with numerous parts, increasing manufacturing costs and maintenance difficulty.

[0022] Based on this, see Figures 1 to 3 As shown, this utility model embodiment provides a connection device 100 for water treatment equipment, used for installing an external filter element assembly 200. The connection device 100 includes a connecting seat 110 and a locking component 120. The locking component 120 is rotatably connected to the connecting seat 110, and the locking component 120 has an installation groove for engaging with the filter element assembly 200 and / or a locking member 121 for clamping the filter element assembly 200.

[0023] In the connecting device 100 of this embodiment, by providing a locking component 120 that cooperates with the filter element assembly 200, the locking component 120 can securely fix the filter element assembly 200 through the mounting groove and / or locking member 121 after the filter element assembly 200 is engaged with the connecting seat 110. Compared with the threaded tightening, snap-fit, or spring-pressing methods used in traditional filter elements, the connecting device 100 of this embodiment has a simpler structure and fewer parts, thereby reducing manufacturing costs and maintenance difficulty.

[0024] Meanwhile, in this embodiment, the locking component 120 is rotatably connected to the connecting seat 110. Users can quickly assemble and disassemble the filter element assembly 200 simply by rotating the locking component 120, simplifying the operation process and eliminating the need for a large operating space. This solves the problem of cumbersome assembly and disassembly and the high space requirements of existing threaded connections, improving the convenience and efficiency of assembly and disassembly.

[0025] Furthermore, through the cooperation of the mounting slot and locking element 121, the filter element assembly 200 can achieve a stable and reliable fixed connection, avoiding the defects of snap-on or spring-type connection structures that are complex and prone to loosening, thereby ensuring the firmness of the connection and the safe operation of the equipment.

[0026] Specifically, the connector 110 has a hinge hole 1131 and a connection slot 1132 communicating with the hinge hole 1131, and the filter element assembly 200 is detachably connected to the connector 110; the locking component 120 can be inserted into the hinge hole 1131 from the connection slot 1132, and the locking component 120 is rotatably connected to the hinge hole 1131.

[0027] Specifically, the design of the connecting slot 1132 and the locking component 120 allows the locking component 120 to be rotated to a position corresponding to the connecting slot 1132 during the assembly of the connecting device 100, thus smoothly inserting it into the hinge hole 1131 and achieving the initial assembly of the locking component 120 and the connecting seat 110. After insertion, by continuing to rotate the locking component 120 to avoid the position of the connecting slot 1132, the locking component 120 is locked in the hinge hole 1131, preventing the locking component 120 from separating from the connecting seat 110.

[0028] This connection method features a simple structure, avoiding complex fasteners or multi-part combinations, thus reducing manufacturing costs and assembly difficulty. The rotating insertion design allows users to complete installation and disassembly by rotating the locking component 120, without the need for additional tools or a large operating space, improving the convenience and flexibility of assembly and disassembly.

[0029] With the above design, when the locking component 120 is rotated to the corresponding position of the connecting slot 1132, it can be smoothly inserted into the hinge hole 1131 to complete the assembly; after rotating away from the connecting slot 1132, the locking component 120 is fixed in the hinge hole 1131, preventing the component from accidentally falling off during disassembly and assembly. This rotational insertion locking method combines the simplicity of the mechanical structure with the convenience of operation, making it suitable for the rapid replacement needs of the filter element assembly 200 in water treatment equipment.

[0030] In one embodiment, the locking assembly 120 includes a locking member 121 and a hinge member 122. The hinge member 122 includes a shaft portion 1221 and a positioning protrusion 1222. The shaft portion 1221 is connected to the locking member 121. The locking member 121 is used to fix the filter element assembly 200 and the connecting seat 110. The shaft portion 1221 passes through the hinge hole 1131 and is rotatably connected to the connecting seat 110. The positioning protrusion 1222 is provided on the outer peripheral wall of the shaft portion 1221. When the shaft portion 1221 rotates to the point where the positioning protrusion 1222 corresponds to the connecting slot 1132, the positioning protrusion 1222 can pass through the connecting slot 1132. When the shaft portion 1221 is connected to the hinge hole 1131, the positioning protrusion 1222 and the locking member 121 are respectively located on opposite axial sides of the hinge hole 1131.

[0031] Specifically, the dimensions and shape of the shaft portion 1221 match the inner diameter of the hinge hole 1131, ensuring that the shaft portion 1221 can smoothly pass through the hinge hole 1131 while achieving a suitable degree of rotational freedom. The length of the shaft portion 1221 should ensure that it can completely pass through the hinge hole 1131 and provide space for the positioning protrusion 1222 and the locking member 121 located on opposite sides of the axial direction of the hinge hole 1131.

[0032] A positioning protrusion 1222 is provided on the outer peripheral wall of the shaft portion 1221, forming a protruding structure protruding from the circumference of the shaft portion. The specific shape can be cylindrical, semi-circular, or wedge-shaped. The height and width of the positioning protrusion 1222 should meet the size requirements of being able to pass through the connecting slot 1132 on the connecting seat 110, and at the same time, be able to engage with the connecting slot 1132 when the shaft portion 1221 rotates away from the connecting slot 1132, thereby achieving a stable locking of the locking assembly 120.

[0033] The connecting slot 1132, serving as an opening on the connecting seat 110, communicates with the hinge hole 1131. Its size and shape match the positioning protrusion 1222, allowing the positioning protrusion 1222 to pass through the connecting slot 1132 when the locking assembly 120 rotates to the corresponding position. After insertion, the shaft 1221 is rotated further to make the positioning protrusion 1222 avoid the opening of the connecting slot 1132. The positioning protrusion 1222 is then blocked on the side of the connecting slot 1132, forming an anti-dislodgement locking structure. At this time, the positioning protrusion 1222 and the locking member 121 are located on opposite axial sides of the hinge hole 1131. The locking member 121 forms a fixed connection with the connecting seat 110 through a clamp or by holding the filter element assembly 200, preventing the filter element assembly 200 from loosening or falling off.

[0034] Through the rotatable connection of the shaft portion 1221 passing through the hinge hole 1131, the locking component 120 can rotate around the shaft portion 1221. The user only needs to rotate the locking component 120 until the positioning protrusion 1222 corresponds to the position of the connecting slot 1132, and the positioning protrusion 1222 can pass through the connecting slot 1132 to complete the insertion. Then, rotate the locking component 120 so that the positioning protrusion 1222 avoids the connecting slot 1132, and the locking component 120 is locked on the connecting seat 110, avoiding accidental separation of the locking component 120 and the connecting seat 110, and realizing the quick assembly and disassembly of the filter element assembly 200.

[0035] In one embodiment, the connecting slot 1132 is provided on the outer peripheral wall of the hinge hole 1131. Specifically, when the positioning protrusion 1222 corresponds to the connecting slot 1132, the hinge member 122 of the locking assembly 120 can be inserted into the hinge hole 1131 along the axial direction of the shaft portion 1221, and the positioning protrusion 1222 simultaneously passes through the connecting slot 1132 and enters the interior of the hinge hole 1131.

[0036] The principle behind this design is to utilize the matching relationship between the positioning protrusion 1222 and the connecting slot 1132, allowing the hinge 122 to smoothly pass through the hinge hole 1131 of the connecting seat 110 and complete initial positioning. Subsequently, by rotating the locking member 121, the hinge 122 is rotated around the shaft 1221, causing the positioning protrusion 1222 to move away from the connecting slot 1132, thus preventing the locking member 121 from separating from the connecting seat 110. During disassembly, simply rotate the locking member 121 in the opposite direction to realign the positioning protrusion 1222 with the connecting slot 1132 and allow it to pass through the connecting slot 1132, thereby releasing the locking state between the locking assembly 120 and the connecting seat 110, facilitating the removal of the filter element assembly 200.

[0037] The structure is simple and straightforward in design, easy to operate, and eliminates the tedious steps of tightening traditional threaded connections with multiple turns. It also requires less operating space during assembly and disassembly, making it suitable for water treatment equipment with limited space. Furthermore, the tight fit between the positioning protrusion 1222 and the connecting groove 1132 ensures the stable positioning of the locking component 120, preventing loosening or misalignment and improving connection reliability and sealing performance.

[0038] In practice, the size and shape of the connecting slot 1132 can be adjusted according to the specifications of the shaft 1221 and the positioning protrusion 1222 to adapt to the size requirements of different filter element assemblies 200. If the size of the connecting slot 1132 is too small, the positioning protrusion 1222 may have difficulty passing through smoothly, affecting the ease of disassembly and assembly; if the size is too large, the locking effect of the positioning protrusion 1222 may be reduced, affecting the connection stability. Therefore, the size of the connecting slot 1132 should be reasonably designed to ensure that the positioning protrusion 1222 can be inserted smoothly while also taking into account the locking effect.

[0039] In one embodiment, the locking assembly 120 further includes a reset member 123, which is connected to the hinge member 122 and the connecting seat 110 respectively, and is used to drive the locking member 121 to rotate to a fixed position or a released position. The introduction of the reset member 123 makes the opening and closing action of the locking assembly 120 more automated and reliable, and improves the ease of installation and disassembly of the filter element assembly 200.

[0040] Specifically, when the reset member 123 drives the locking member 121 to rotate to the fixed position, it can provide a continuous elastic force or driving force to ensure that the locking member 121 tightly surrounds the outer wall of the filter element assembly 200. This driving action enhances the clamping force between the locking member 121 and the filter element assembly 200, improves the stability and reliability of the connection, and prevents the filter element from loosening or falling off due to vibration or water flow impact during equipment operation, thereby ensuring the normal operation of the water treatment equipment 10 and the water quality treatment effect.

[0041] When the filter element assembly 200 needs to be disassembled, the reset member 123 drives the locking member 121 to rotate to the released position, causing the locking member 121 to separate from the outer wall of the filter element assembly 200, creating a disassembly space for the user to easily pull out the filter element assembly 200. After the filter element is removed, the reset member 123 maintains its driving function, keeping the locking member 121 in the open state. This prevents the locking member 121 from automatically closing due to its own elasticity or other factors, which could hinder the installation of the next filter element, thus improving the convenience and efficiency of user operation.

[0042] The reset element 123 can be constructed using a spring, torsion spring, elastic rod, or other mechanical components with a reset function. A spring-type reset element 123 is simple and reliable in design, capable of storing and releasing energy during the rotation of the locking element 121 to achieve an automatic reset function. The stiffness and dimensions of the reset element 123 can be adjusted according to the structural dimensions of the locking assembly 120 and the specifications of the filter element assembly 200 to ensure a moderate reset force, ensuring that the locking element 121 firmly secures the filter element without causing difficulty in opening and closing.

[0043] The reset element 123 not only improves the mechanical precision of the locking assembly 120, but also reduces the number of steps and the amount of force required by the user during filter replacement, thus helping to reduce equipment maintenance costs and extend equipment lifespan. Furthermore, with the cooperation of the reset element 123, the locking assembly 120 can achieve a more stable locking state and a smoother release action, improving the overall safety and convenience of the connection device 100.

[0044] In one embodiment, the connecting seat 110 includes a seat body 111, a hinge seat 113, and a fixing part 114. The hinge seat 113 and the fixing part 114 are respectively disposed on the seat body 111, and the hinge hole 1131 and the connecting groove 1132 are disposed on the hinge seat 113. The fixing part 114 has a first fixing groove, and the shaft part 1221 has a second fixing groove 12211. The opposite ends of the reset member 123 are respectively accommodated in the first fixing groove and the second fixing groove 12211.

[0045] In this embodiment, the base body 111 serves as the mounting carrier for the connecting base 110 and can take various forms, such as a plate structure or a partial structure of the main unit of the water treatment equipment 10. The specific form can be flexibly determined according to actual design requirements and is not limited to a single form. This design provides a robust and reliable foundation support for the connecting device 100. In one embodiment, the connecting base 110 further includes a pipeline section 112, which is used to connect the filter element assembly 200 to the water system in the water treatment equipment 10 or to an external water system. Through the detachable connection between the filter element assembly 200 and the pipeline section 112, the filter element assembly 200 can easily achieve fluid communication with the water system of the water treatment equipment 10.

[0046] Specifically, the piping section 112 can be designed as a pipe fitting or flange structure with a connection interface to adapt to the inlet and outlet structure of the filter element assembly 200, enabling smooth water flow in and out. The connection between the piping section 112 and the filter element assembly 200 can be achieved through various methods such as clamp connection, quick-connect fitting, threaded tightening, or sealing ring sealing, depending on the actual equipment structure and sealing requirements, to ensure the sealing performance of the connection and the ease of assembly and disassembly.

[0047] Through the cooperation of the fixing part 114 and the reset part 123, both ends of the reset part 123 are fixed in the first fixing groove and the second fixing groove 12211, ensuring the stability and accuracy of the reset part 123 during the opening and closing action of the locking assembly 120, and preventing the reset part 123 from shifting or falling off due to vibration or force. During installation, simply snap the two ends of the reset part 123 into the corresponding fixing grooves, which is quick to position and easy to disassemble and assemble, greatly simplifying the assembly and maintenance process.

[0048] This structural design not only ensures the effective operation of the reset component 123, but also makes the overall structure of the connecting device 100 more compact, reducing the device's volume and facilitating its application in space-constrained environments. Simultaneously, the compact structure also helps reduce material costs and manufacturing difficulty, improving the device's stability and durability.

[0049] Specifically, the shaft portion 1221 is also provided with a receiving groove 12212 that communicates with the second fixing groove 12211. The reset member 123 includes a first fixing section 1231, a second fixing section 1232 and an elastic part 1233. The elastic part 1233 is connected to the first fixing section 1231 and the second fixing section 1232 respectively. The elastic part 1233 is accommodated in the receiving groove 12212. The first fixing section 1231 is engaged with the first fixing groove, and the second fixing section 1232 is engaged with the second fixing groove 12211.

[0050] The inclusion of the receiving groove 12212 effectively accommodates the elastic part 1233, making the overall combination structure of the reset member 123 and the shaft 1221 more compact. This structural design not only saves space and facilitates the size control of the connecting device 100, making it easy to install and use in water treatment equipment 10 with limited space, but also restricts the range of motion of the elastic part 1233 by accommodating it, improving the positioning accuracy of the reset member 123 and ensuring its stability and reliability during the rotation of the locking member 121.

[0051] In addition, the receiving groove 12212 protects the elastic part 1233, effectively preventing the elastic part 1233 from being damaged by external impact, friction or corrosion during use, thereby extending the service life of the reset part 123 and reducing the maintenance frequency.

[0052] Through the snap-fit ​​engagement of the first fixing segment 1231 with the first fixing groove and the second fixing segment 1232 with the second fixing groove 12211, the positioning of the reset component 123 during installation is clear, the disassembly and assembly operations are simple, and the structure is tightly connected, preventing the reset component 123 from loosening or falling off during use. This multi-segment structure design of the reset component 123 takes into account the convenience of installation, the compactness of the structure, and the durability of use, which helps to improve the overall performance and reliability of the connecting device 100.

[0053] In one embodiment, the elastic part 1233 adopts a helical structure, specifically a torsion spring-like structure. The helical elastic part 1233 achieves the reset function through torsional deformation. That is, during the rotation of the locking member 121, the elastic part 1233 is deformed by torsional force and stores mechanical energy; when the external force is released, the elastic part 1233 returns to its original shape, thereby driving the locking member 121 to automatically rotate back to the predetermined fixed position or release position.

[0054] The elastic part 1233, with its helical structure, possesses excellent elastic deformation capability and high fatigue resistance, maintaining a stable reset force during repeated opening and closing operations. This ensures that the locking element 121 of the locking assembly 120 can quickly and accurately return to its original position, improving the overall response speed and reliability. The helical structure design allows the reset element 123 to achieve a large torque output within a limited space, meeting the reset requirements of the compact structure of the connecting device 100.

[0055] Furthermore, the elastic part 1233, with its torsion spring-like structure, allows for precise control of the reset force by adjusting parameters such as the helical diameter, number of turns, and material elastic modulus, thus adapting to the needs of different filter element assembly sizes 200 and the working environment of the water treatment equipment 10. The rationally designed helical elastic part 1233 ensures that the locking member 121 firmly clamps the filter element while avoiding excessive resistance to opening and closing due to excessive reset force, thereby improving user comfort and safety. Specifically, the first fixing groove includes a connected inlet groove 11411 and a fixing groove 11412. The fixing groove 11412 is located inside the inlet groove 11411. The first fixing section 1231 can move from the inlet groove 11411 into the fixing groove 11412 and engage with it, achieving stable positioning of the reset member 123.

[0056] The technical principle of this structural design lies in using the inlet slot 11411 to guide the assembly process of the first fixing segment 1231, ensuring that the reset component 123 can smoothly enter and accurately position itself during installation. In specific operation, the first fixing segment 1231 of the reset component 123 is first aligned with the inlet slot 11411. The reset component 123 is then pushed forward along the direction of the inlet slot 11411. The guiding effect allows the first fixing segment 1231 to slide accurately into the fixing slot 11412, achieving a snap-fit ​​fixation. The fixing slot 11412, through its shape and size, restricts the movement of the first fixing segment 1231, preventing the reset component 123 from loosening or falling off during use.

[0057] By setting up a combined structure of the inlet slot 11411 and the fixing slot 11412, the installation process of the reset component 123 is not only simplified and the assembly efficiency is improved, but also the installation positioning accuracy of the reset component 123 is enhanced, ensuring that the reset component 123 remains stable during the opening and closing action of the locking component 120, thereby improving the overall reliability and durability of the connecting device 100.

[0058] In addition, the structural design facilitates the disassembly and maintenance of the reset component 123. Users can slide the first fixed section 1231 out of the fixed slot 11412 and into the slot 11411 by moving the first fixed section 1231 in the reverse direction, which facilitates the replacement and maintenance of the reset component 123 and meets the daily maintenance needs of the water treatment equipment 10.

[0059] In one embodiment, the fixing part 114 further includes a fixing hook 1142, which is disposed between the fixing slot 11412 and the entry slot 11411. The fixing hook 1142 at least partially protrudes into the fixing slot 11412 and extends toward the entry slot 11411, so that after the first fixing segment 1231 is engaged in the fixing slot 11412, it can abut against the fixing hook 1142 under the elastic action of the reset member 123.

[0060] The technical principle of this structural design lies in using the fixing hook 1142 to block and limit the first fixing segment 1231, and utilizing the elastic force of the elastic part 1233 of the reset member 123 to keep the first fixing segment 1231 close to the fixing hook 1142, thereby achieving stable fixing and positioning of the reset member 123. Specifically, during installation, the first fixing segment 1231 slides into the fixing slot 11412 along the direction of the inlet slot 11411. After the elastic deformation of the elastic part 1233, the first fixing segment 1231 abuts against the protruding fixing hook 1142. The restoring force generated by the elastic part 1233 makes a stable contact force between the first fixing segment 1231 and the fixing hook 1142, preventing the first fixing segment 1231 from loosening or falling out due to vibration or external force.

[0061] By setting the fixing hook 1142, not only is the locking effect of the reset member 123 enhanced, but the reliability and safety of installation are also improved, ensuring that the reset member 123 maintains a stable working state during use and preventing reset failure due to insecure installation. Furthermore, this structure utilizes the elastic force of the elastic part 1233 to achieve continuous contact between the first fixing section 1231 and the fixing hook 1142, reducing structural loosening caused by mechanical impact and improving the overall durability of the connecting device 100.

[0062] Meanwhile, the design of the fixing hook 1142 takes into account the ease of assembly. With the assistance of elastic deformation, the first fixing section 1231 can smoothly pass over the fixing hook 1142 and enter the fixing slot 11412. Under the action of the release force of the reset part, it rebounds and abuts against the fixing hook 1142, ensuring simple installation and accurate positioning.

[0063] In summary, the fixing hook 1142 is located in the fixing part 114 of the connecting seat 110. Together with the first fixing section 1231 and the elastic part 1233 of the reset member 123, it realizes the reliable locking and positioning of the reset member 123, improves the structural stability and safety of the connecting device 100, and meets the technical requirements of the water treatment equipment 10 for efficient and stable filter element connecting device.

[0064] Specifically, there are two sets of hinge seats 113, and these two sets of hinge seats 113 are symmetrically arranged on the seat body 111 of the connecting seat 110. The hinge members 122 of the locking assembly 120 are respectively inserted into the hinge holes 1131 of the two sets of hinge seats 113 and rotatably connected to them.

[0065] The technical principle of this structural design lies in setting two symmetrical hinge seats 113, so that the hinge 122 of the locking assembly 120 can achieve dual-point rotational support on the connecting seat 110. Compared with the support method of a single hinge seat 113, two hinge seats 113 can effectively distribute the force on the locking assembly 120 during rotation, reduce off-center loading and swaying, and improve the stability and smoothness of rotation.

[0066] Specifically, the biaxial support structure formed by the symmetrical distribution of the two hinge seats 113 enables the locking assembly 120 to maintain better geometric stability during opening and closing, avoiding eccentric rotation or wobbling caused by unilateral support. This stable rotational connection reduces the wear and fatigue risk of the locking assembly 120 and extends the service life of the device 100.

[0067] In addition, the symmetrical design of the two sets of hinge seats 113 helps to evenly transmit the reset force generated by the reset member 123, improve the clamping uniformity of the locking member 121 when locking the filter element assembly 200, and further ensure the firmness and sealing performance of the connection.

[0068] In one embodiment, the number of fixing parts 114 and hinge members 122 are both set in two groups, and the two groups of fixing parts 114 are connected to the two groups of hinge members 122 in a one-to-one correspondence. Specifically, each group of hinge members 122 is respectively inserted into the hinge hole 1131 on the corresponding fixing part 114 to achieve a rotatable connection.

[0069] By setting two sets of fixing parts 114 corresponding to the hinge 122, the force on the locking assembly 120 during opening and closing can be effectively distributed and balanced, further improving the stability of the rotary connection. The two sets of fixing parts 114 serve as support points, providing reliable load-bearing and positioning for the hinge 122, avoiding eccentricity, swaying, or stress concentration that may be caused by single-point force.

[0070] Furthermore, the cooperation between the two sets of fixing parts 114 and the hinge 122 enhances the structural rigidity of the locking assembly 120 when locking the filter element assembly 200, thereby improving the overall mechanical strength and durability of the connecting device 100. This design also ensures that the mating clearance between rotating parts remains stable during long-term use, reducing loosening caused by wear and improving the sealing performance and safety of the connection.

[0071] Specifically, the filter element assembly 200 has an installation groove 2211 on its outer wall, and the connecting device 100 includes a connecting seat 110 and a locking component 120. The connecting seat 110 is used to connect to an external water circuit, and the filter element assembly 200 is detachably connected to the connecting seat 110. The locking component 120 is movably connected to the connecting seat 110, and the locking component 120 has a fixed position and a released position relative to the connecting seat 110. In the fixed position, the locking component 120 is at least partially engaged with the installation groove 2211, and in the released position, the locking component 120 is separated from the filter element assembly 200.

[0072] In the connection device 100 of this embodiment, by setting the mounting groove 2211 on the outer wall of the filter element assembly 200 and the locking component 120 to engage, the filter element assembly 200 and the connecting seat 110 are reliably fixed, which effectively improves the problems of unstable connection and difficult disassembly of traditional filter elements, and improves the reliability of use and the convenience of maintenance of the water treatment equipment 10.

[0073] The locking component 120 can switch between a fixed position and a released position. When in the fixed position, the locking component 120 is embedded in the mounting groove 2211 to ensure that the filter element assembly 200 will not loosen or fall off during equipment operation, thereby improving the stability and safety of the connection.

[0074] Meanwhile, this structural design makes the combination of filter element assembly 200 and connector 110 more compact, avoiding the complexity of traditional threaded or snap-fit ​​connections. More importantly, in the released position, locking component 120 separates from filter element assembly 200, greatly reducing the force required for disassembly, simplifying the replacement process of filter element assembly 200, and improving maintenance convenience and efficiency.

[0075] Specifically, the locking element 121 is used to engage with the mounting slot 2211.

[0076] In this embodiment, the locking member 121 is used to directly cooperate with the mounting groove 2211 to fix the filter element assembly 200. Specifically, the locking member 121 can adopt a C-shaped structure. When the locking assembly 120 is in the fixed position, the locking member 121 is at least partially engaged with the mounting groove 2211 to ensure that the filter element assembly 200 is firmly surrounded by the locking member 121, preventing the filter element from loosening or falling off during equipment operation.

[0077] In one embodiment, the outer edge of the mounting groove 2211 is provided with a guide slope 22111, which is used to guide the locking component 120 into the mounting groove 2211 and serves as a mounting guide.

[0078] Specifically, the guide slope 22111 is designed as an inwardly inclined ramp structure, and its slope angle can be adjusted according to the actual structural size and operation requirements. For example, it can be set to different angle ranges such as 5°, 10°, and 15° to adapt to the assembly tolerances of different filter element components 200 and the shape of the locking member 121 of the locking component 120.

[0079] The guide ramp 22111 provides a smooth guiding path for the first locking part 1211 when it enters the mounting groove 2211. Especially when the filter element assembly 200 is not fully installed, when the first locking part 1211 of the locking member 121 contacts the mounting groove 2211, the guide ramp 22111, through a sliding engagement, gradually guides and adjusts the filter element assembly 200 to the preset correct installation position. This guiding process effectively avoids problems such as the locking member 121 failing to accurately embed into the mounting groove 2211 or the locking assembly 120 failing to close due to installation deviations, thus improving the installation accuracy and convenience of the filter element assembly 200.

[0080] Furthermore, the guide bevel 22111 can buffer the initial contact impact between the locking member 121 and the mounting groove 2211, reducing mechanical wear during installation and extending the service life of the filter element assembly 200 and the locking assembly 120. The smooth surface treatment of the guide bevel 22111 or its manufacture of wear-resistant materials further improves the smoothness of the sliding fit.

[0081] Furthermore, the locking member 121 includes a first locking part 1211 and a second locking part 1212. The first locking part 1211 is connected to the second locking part 1212. When in the fixed position, the first locking part 1211 is at least partially engaged with the mounting groove 2211, and the second locking part 1212 is at least partially disposed around the outer wall of the filter element assembly 200.

[0082] Specifically, the first locking portion 1211 is at least partially embedded in the mounting groove 2211 on the outer wall of the filter element assembly 200, forming a snap fit with the mounting groove 2211. This snap fit generates a radial locking force through mechanical engagement, ensuring that the locking member 121 can firmly grip the filter element assembly 200, preventing the filter element from loosening or falling off due to vibration, fluid impact or temperature changes during operation, and improving the stability and safety of the connection.

[0083] The second locking portion 1212 at least partially surrounds the outer wall of the filter element assembly 200, providing a surrounding support effect for the filter element assembly 200. This surrounding structure can not only evenly distribute the locking force, reduce local stress concentration, prevent the filter element assembly 200 from deforming or being damaged due to uneven force, but also further enhance the overall rigidity of the locking member 121, and improve the fixing firmness of the filter element assembly 200.

[0084] The locking member 121 with a "day"-shaped structure combines the snap-fit function of the first locking portion 1211 and the surrounding support function of the second locking portion 1212 to form a dual locking mechanism. Such a structural design not only improves the locking strength of the locking assembly 120 for the filter element assembly 200, but also increases the overall stability of the connecting device 100, and reduces the risk of the filter element assembly 200 becoming loose, offset or falling off during the operation of the equipment.

[0085] In addition, the design of the "day"-shaped locking member 121 also facilitates the rapid installation and disassembly of the filter element assembly 200. During installation, the locking assembly 120 moves from the release position to the fixed position, the first locking portion 1211 is embedded into the mounting groove 2211, and the second locking portion 1212 surrounds the outer wall of the filter element assembly 200 at the same time to achieve tight locking. During disassembly, the locking assembly 120 is switched to the release position, the first locking portion 1211 is separated from the mounting groove 2211, the second locking portion 1212 releases the surrounding state, and the filter element assembly 200 can be easily pulled out, with simple and labor-saving operation.

[0086] In summary, by designing the locking member 121 as a "day"-shaped structure including the first locking portion 1211 and the second locking portion 1212, the locking firmness of the filter element assembly 200 and the overall performance of the connecting device 100 can be effectively improved, meeting the requirements of the water treatment equipment 10 for reliable fixation of the filter element and convenient maintenance.

[0087] In one embodiment, a limiting surface is provided on the side of the filter element cover 220 away from the filter element cylinder 210, and the limiting surface is arranged at an angle with the axial direction of the filter element cylinder 210. The filter element cover 220 is used to connect with the external connecting base 110 such as a water treatment equipment, and the limiting surface is used to accommodate the snap fit of the external hoop assembly 120 such as a water treatment equipment.

[0088] In this embodiment, the filter element assembly 200 has a limiting surface on the filter element cover 220. This limiting surface, in conjunction with the clamp assembly 120, limits the installation of the filter element assembly 200, solving the technical problem of insufficient reliability in traditional filter element connections. In this embodiment, the limiting surface engages with the clamp assembly 120. The clamp assembly 120 can abut against the limiting surface, or, if the filter element assembly 200 is movable, abut against it, thereby radially fixing the filter element assembly 200. Compared to traditional threaded or snap-fit ​​connections, this effectively improves the connection reliability between the filter element and the main unit, preventing the filter element from loosening or falling off during operation.

[0089] In the filter element assembly 200 of this embodiment, the design of the limiting surface makes the installation and disassembly of the clamp assembly 120 more convenient, without the need to apply a large tightening force or prying force, which significantly reduces the difficulty of filter element replacement and shortens maintenance time.

[0090] Specifically, the included angle α between the limiting surface and the axial direction of the filter element cylinder 210 satisfies 0°≤a<90°. The setting of this included angle has an important impact on the connection performance and installation firmness between the filter element assembly 200, the connecting seat 110, and the clamp assembly 120.

[0091] When the limiting surface is parallel to the axial direction of the filter element cylinder 210, i.e., α is equal to or close to 0°, after the filter element assembly 200 is laterally installed on the connecting seat 110, the clamp assembly 120 can engage with it in a direction perpendicular to the limiting surface. At this time, the clamp assembly 120 restricts the relative movement of the filter element assembly 200 along this vertical direction through radial clamping force, effectively preventing radial separation between the filter element assembly 200 and the connecting seat 110, and ensuring the stable fixation of the filter element assembly 200. This structure simplifies the installation operation of the clamp assembly 120; applying radial pressure to the clamp achieves clamping of the filter element assembly 200, facilitating filter element disassembly and maintenance.

[0092] When the limiting surface and the filter element cylinder 210 are set at an acute angle, with angle α being greater than 0° and less than 90°, after the clamp assembly 120 engages with the limiting surface, part of the radial clamping force on the clamp assembly 120 is converted into a reaction force along the installation direction of the filter element assembly 200. This reaction force forms a certain angle along the installation direction of the filter element assembly 200, which helps to resist the axial displacement of the filter element assembly 200 caused by vibration, fluid impact, or external forces, thereby improving the installation firmness of the filter element assembly 200. By adjusting the size of the included angle α, the directional distribution of the clamping force of the clamp assembly 120 can be changed, enhancing the stability of the connection and its vibration resistance. Specifically, the value of the included angle α can be selected from multiple discrete values ​​such as 0°, 10°, 20°, 30°, 45°, 60°, and 75°, depending on the structural dimensions of the filter element assembly 200, the elastic characteristics of the clamp assembly 120, and the operating environment.

[0093] In some embodiments, the limiting surface can be formed not only directly on the wall of the mounting groove 2211 of the filter element cover 220, but also by providing a separate limiting component. This limiting component can protrude from the filter element cover 220 in a direction away from the filter element cylinder 210, forming a limiting surface for engaging with the clamp assembly 120. This structural design, where the limiting surface is formed by a limiting component, provides another way to connect the filter element assembly 200 and the clamp assembly 120, enriching the diversity of structural designs.

[0094] Furthermore, the limiting component can also be designed as a structure that is movably connected to the filter cover 220 to meet different assembly and maintenance needs. Specific movable connection methods can include a lifting structure or a flipping structure. The lifting limiting component achieves radial or axial extension / retraction along the filter cover 220 via sliding, guide rail, or spring mechanisms; the flipping limiting component achieves flipping around a fixed axis via hinges, pivots, or other connection methods.

[0095] The lifting-type limiting component can extend from the surface of the filter element cover 220 to form a limiting surface when snap-fit ​​is required, thus achieving a snap-fit ​​engagement with the clamp assembly 120; when not in use, it can retract into the filter element cover 220, without affecting the overall shape and usable space of the filter element assembly 200. Similarly, the flip-type limiting component flips to the contact position with the clamp assembly 120 when snap-fit ​​is needed, and flips back when not snap-fitting, avoiding structural interference and space occupation.

[0096] The advantage of using movable limiting components lies in their high flexibility. They meet the requirements for precise snap-fit ​​during assembly while reducing exposed parts when the clamp assembly 120 is not used, thus lowering the size of the filter element assembly 200 and simplifying maintenance. Simultaneously, this design enhances the ease of disassembly and replacement of the filter element assembly 200 and the clamp assembly 120; users can extend or retract the limiting components with simple lifting or flipping movements.

[0097] In practice, lifting limit components can be used with spring mechanisms, snap-fit ​​mechanisms, or manual drive structures to achieve automatic or manual extension and retraction. Flipping limit components can be designed with locking mechanisms to ensure the stability of the position after flipping. The materials and mechanical design of the limit components should ensure that they maintain positioning accuracy and durability even after multiple extensions or flips.

[0098] The number of limiting components can be designed as one, two or more, depending on the peripheral structure of the filter element cover 220 and the snap-fit ​​points of the clamp assembly 120. The reasonable distribution of multiple limiting components can evenly distribute the clamping force applied by the clamp assembly 120, improve the connection stability of the filter element assembly 200, and adapt to the assembly requirements and working environment of different water purification equipment.

[0099] Furthermore, the connecting device 100 also includes a snap-fit ​​structure 130, which is movably connected to the filter element assembly 200. When in a fixed position, the snap-fit ​​structure 130 engages with the locking component 120 to assist in fixing and limiting the position of the locking component 120.

[0100] Specifically, the snap-fit ​​structure 130 forms a mechanical snap-fit ​​with the locking component 120 when the locking component 120 is in a fixed position, so that the locking component 120 can be stably kept in a fixed position, and the locking component 121 can be prevented from loosening or rotating due to external vibration or force during equipment operation.

[0101] The snap-fit ​​structure 130 can be specifically configured to fix the locking member 121. That is, the snap-fit ​​structure 130, through its cooperation with the locking member 121, physically limits the rotational position of the locking member 121. When the locking member 121 rotates to the fixed position, the snap-fit ​​structure 130 and the locking member 121 engage with each other, restricting the locking member 121 from further rotation and preventing it from deviating from the fixed position due to external forces, thereby improving the connection reliability of the connecting device 100.

[0102] When the locking assembly 120 is equipped with a reset member 123, the reset member 123 drives the locking member 121 to rotate to the release position, completing the disassembly operation of the filter element assembly 200. At this time, the locking structure 130 releases its engagement with the locking member 121, allowing the locking member 121 to rotate smoothly to the release position for easy disassembly. After disassembly, during the installation of the new filter element assembly 200, the locking member 121 rotates to the fixed position, and the locking structure 130 engages with the locking member 121 again to achieve position limiting. This design provides a clear mechanical limit to the fixed position of the locking member 121, preventing unnecessary loosening of the locking member 121 in the fixed state and improving the stability and safety of operation.

[0103] Furthermore, the movable connection between the snap-fit ​​structure 130 and the filter element assembly 200 can be achieved using hinges, pins, or other rotating connection methods, ensuring that the snap-fit ​​structure 130 can move flexibly to complete the snap-fit ​​and release actions. The snap-fit ​​structure 130 can be made of a high-strength and corrosion-resistant metal material to ensure that it maintains good mechanical properties and durability during repeated opening and closing.

[0104] With the auxiliary fixing of the locking member 121 by the snap-fit ​​structure 130, the connecting device 100 can achieve a more stable and reliable fixing effect on the filter element assembly 200, reducing the risk of loosening of the connection caused by vibration, impact and other factors during the use of the filter element. At the same time, the snap-fit ​​structure 130 makes the operation of the locking component 120 more convenient. Combined with the automatic drive function of the reset member 123, the overall efficiency of filter element installation and disassembly and the convenience of equipment maintenance are improved. This design fully meets the requirements of connection reliability and ease of operation in practical applications.

[0105] Specifically, the filter element assembly 200 includes a filter element, a filter element cylinder 210, and a filter element cover 220. The filter element cylinder 210 has an internal receiving space for accommodating the filter element. The filter element cover 220 includes a cover body 221 and a connecting pipe 222. The cover body 221 is connected to the filter element cylinder 210 to cover the receiving space. The connecting pipe 222 is connected to the cover body 221 and is used to connect to an external pipeline. A mounting groove 2211 is provided on the filter element cover 220.

[0106] Specifically, filter elements can be selected from various filtration materials such as activated carbon, reverse osmosis membranes (RO membranes), ultrafiltration membranes, nanofiltration membranes, or ceramic filter cartridges. Activated carbon, due to its excellent adsorption properties, can effectively remove odors, residual chlorine, organic matter, and some heavy metal ions from water, making it suitable for improving the taste of water and removing harmful substances. Reverse osmosis membranes (RO membranes), as micron- or even nanometer-scale filtration elements, can retain most dissolved solids, bacteria, viruses, and other tiny impurities, making them suitable for high-purity water preparation. Ultrafiltration and nanofiltration membranes strike a balance between filtration precision and flow rate, making them suitable for mid- to high-end water purification equipment. Ceramic filter cartridges, with their high mechanical strength, high temperature resistance, and corrosion resistance, are suitable for filtration needs under special operating conditions.

[0107] In addition, the outer diameter of the filter cartridge 210 is 50-130mm. Specifically, the outer diameter of the filter cartridge 210 can be 50mm, 65mm, 80mm, 95mm, 110mm, or 130mm, depending on the actual filtration requirements and equipment installation space. No single limitation is specified here. When the outer diameter of the filter cartridge 210 is less than 50mm, the accommodating space is relatively small, which may result in insufficient filling of the filter elements, affecting the filtration effect and service life. When the outer diameter of the filter cartridge 210 is greater than 130mm, the overall volume of the filter assembly 200 increases, which may increase the equipment installation space requirements and material costs.

[0108] Different outer diameter filter cartridges 210 are suitable for different application scenarios. Filter cartridges 210 with an outer diameter of 50-70mm are suitable for small household water purification equipment, featuring a compact structure and convenient installation; filter cartridges 210 with an outer diameter of 70-100mm are suitable for medium-sized commercial water purification equipment, achieving a balance between filtration effect and equipment size; filter cartridges 210 with an outer diameter of 100-130mm are suitable for large industrial water purification equipment or occasions requiring long-term continuous operation, accommodating more filter elements and extending the replacement cycle.

[0109] In one embodiment, the extending direction of the connecting pipe 222 is perpendicular to the axial direction of the filter cartridge body 210, that is, the included angle between the two is 90°.

[0110] This vertically arranged design allows the filter element assembly 200 to be disassembled and installed along the axial direction of the connecting pipe 222, simplifying the replacement and maintenance process of the filter element. Compared to the traditional filter element assembly 200, which can only be disassembled and installed along the overall axial direction, lateral disassembly and installation not only improves the convenience of disassembly and installation but also effectively optimizes the spatial layout of the water treatment equipment 10 along the axial direction of the filter element cylinder 210, reducing the axial length requirement of the equipment and thus contributing to the compact design of the overall equipment.

[0111] Furthermore, the side-mounted structure of the filter element assembly 200 ensures a more stable connection between the filter element assembly 200 and the water circuit components under gravity, preventing loosening or separation due to gravity. This structure improves the operational stability and reliability of the water treatment equipment 10, reducing the risk of leakage or equipment failure caused by loosening of the filter element assembly 200.

[0112] After the filter element assembly 200 is connected to the connecting seat 110, the locking component 120 can wrap around the outside of the filter element cover 220, thereby fixing the filter element assembly 200 and the connecting seat 110 together along the axial direction of the connecting tube 222. In summary, the technical solution of axially perpendicularly arranging the connecting pipe 222 and the filter cartridge body 210 not only facilitates the disassembly and assembly of the filter cartridge assembly 200 and optimizes the equipment space layout, but also enhances the overall structural stability and safety of the equipment. It is suitable for water treatment equipment 10 where space is limited and high ease of maintenance is required.

[0113] Specifically, in this embodiment, the distance L1 between the end of the connecting tube 222 away from the cover body 221 and the limiting surface is limited to 15mm≤L1≤90mm.

[0114] The optional endpoints and several intermediate values ​​of L1 can be, for example, 15mm, 30mm, 45mm, 60mm, 90mm. Specifically, any of the above values ​​or other values ​​between the above values ​​can be taken. The specific values ​​are determined according to the installation space of the equipment, the insertion depth of the filter element assembly 200, the structural dimensions of the locking member 121, and the arrangement of the sealing member. There is no unique limitation here.

[0115] Disadvantages and adverse situations that may occur when L1 exceeds the specified range: When L1 < 15mm, the distance between the end of the connecting tube 222 and the limiting surface may be too short, which may prevent the connecting tube 222 from forming a sufficient insertion depth, causing the sealing ring to fail to enter the sealing groove or to be insufficiently compressed, resulting in decreased sealing performance and leakage. An excessively short L1 may also cause the limiting surface to interfere with the pipe section 112 or the clamp assembly 120, affecting the smooth installation or removal of the filter element assembly 200. When L1 > 90mm, the exposed length of the connecting tube 222 and the length of the lever arm increase, which will amplify the bending moment effect of external forces on the connection, which may cause fatigue, deformation, or loosening of the connection between the connecting tube 222 and the cover body 221 under long-term vibration; at the same time, an excessively large L1 will increase the overall size of the device and material consumption, increase manufacturing costs, and may introduce a large dead cavity in the connection, affecting the fluid dynamics performance (e.g., retention, incomplete flushing). Therefore, if the situation exceeds this range, additional measures such as structural reinforcement, material selection, or limiting external forces should be taken; otherwise, the reliability of the connection will be reduced or the cost will be increased.

[0116] Furthermore, in order to ensure the connection strength between the connecting pipe 222 and the cover body 221, the connection position between the connecting pipe 222 and the cover body 221 can be designed with an outer diameter larger than the outer diameter of the pipe opening of the connecting pipe 222. Specifically, the outer diameter of the connecting pipe 222 is D1, D1=6.5-14.5mm, and D2=7.5-11.5mm.

[0117] In this embodiment, the outer diameter of the connecting pipe 222 can be divided into the basic outer diameter D1 at the pipe opening and the outer diameter D2 after reinforcement or transition at the connection with the cover body 221. To ensure the connection strength between the connecting pipe 222 and the cover body 221, a transition section or reinforcing shoulder with an outer diameter larger than the pipe opening can be provided at the connection, so that the load is better distributed and reinforced at the transition section. The following value examples are given for selection: D1 ranges from 6.5 mm to 14.5 mm, and 6.5 mm, 8.0 mm, 10.0 mm, 12.0 mm, and 14.5 mm can be taken as endpoints and intermediate values ​​respectively; D2 ranges from 7.5 mm to 11.5 mm, and 7.5 mm, 8.5 mm, 9.5 mm, and 11.5 mm can be taken as endpoints and intermediate values ​​respectively.

[0118] In specific designs, D2 is usually set to be greater than or equal to D1 (e.g., D2≈D1+1.0 mm to +3.5 mm) to form a shouldered transition or thickened annular area. The shoulder or reinforcing ring can be integrated with the cover body 221 or formed a reliable connection through mechanical fitting. If D2 is designed to be the same as D1, there is no reinforcement effect; if D2 is too large (much greater than 11.5 mm), it will increase the exposed volume, material cost, and may create dead cavities or interference, and may reduce aesthetics and spatial adaptability during insertion; if D1 is less than 6.5 mm, the strength of the nozzle and the durability of the interface will decrease, and local damage or fatigue is likely to occur during insertion or when subjected to bending moment.

[0119] Specifically, the inner diameter of the infusion channel is 2-8 mm, and the distance between the central axes of two adjacent connecting tube sections 222 can be 11-19 mm.

[0120] In this embodiment, the inner diameter of the infusion channel ranges from 2 mm to 8 mm, with endpoints and intermediate values ​​of 2 mm, 3.5 mm, 5 mm, 7 mm, and 8 mm, respectively. The inner diameter directly affects the flow capacity and pressure drop: a smaller inner diameter (close to 2 mm) increases the pressure drop per unit length, making it prone to blockage, suitable for low-flow or high-precision micro-volume water supply applications; a larger inner diameter (close to 8 mm) results in a larger flow rate but increases volume and connector size, suitable for larger flow rates or commercial / industrial applications. During design, hydraulic checks should be performed based on the rated flow rate and allowable pressure drop of the water purification equipment, taking into account the requirements for particulate contamination and ease of channel cleaning.

[0121] The distance between the central axes of two adjacent connecting pipe sections 222 can be 11 mm to 19 mm, specifically 11 mm, 14 mm, 16 mm, or 19 mm. The axial spacing determines the minimum external dimensions and wall thickness distribution of the cover body 221 when multiple channels are arranged: a smaller spacing (e.g., 11 mm) is beneficial for overall miniaturization, but may increase stress concentration in weak wall areas; a larger spacing (e.g., 19 mm) is beneficial for strengthening the wall and facilitating the arrangement of reinforcing ribs or mounting cavities between two channels, but will increase the overall size. During design, it is necessary to ensure that the channel spacing does not structurally interfere with the minimum wall thickness of the cover body 221, the position of reinforcing ribs, and the arrangement of sealing grooves.

[0122] Of course, in some embodiments, the outer wall of the connecting pipe portion 222 is recessed to form a sealing groove to accommodate the sealing element. The outer diameter of the sealing groove (including the outer edge dimension at the groove opening) can be selected in the range of 4.5 mm to 12.5 mm, specifically 4.5 mm, 6.5 mm, 9.5 mm, and 12.5 mm. The size of the sealing groove must match the cross-section of the selected sealing element (e.g., the diameter of the O-ring cross-section) to ensure that a suitable amount of compression and sealing contact surface can be obtained when it is inserted into the pipe portion 112.

[0123] The present invention also provides a water treatment device 10, which includes a connecting device 100 and a filter element assembly 200 in any of the above embodiments; the filter element assembly 200 is detachably connected to the connecting seat 110, and the locking member 121 is used to fix the filter element assembly 200 and the connecting seat 110.

[0124] In this embodiment, the water treatment device 10 utilizes a locking assembly 120 in the connecting device 100. The locking assembly 120 includes a locking member 121 and a hinge member 122. The shaft portion 1221 of the hinge member 122 passes through the hinge hole 1131 of the connecting seat 110, forming a rotatable connection between the filter element assembly 200 and the connecting seat 110. The positioning protrusion 1222 is correspondingly provided with the connecting groove 1132 on the connecting seat 110, allowing the shaft portion 1221 to smoothly pass through the connecting groove 1132 to complete the installation and positioning. This design allows the filter element assembly 200 to be installed and disassembled through a simple rotation operation, avoiding the cumbersome process of tightening multiple turns of traditional threaded connections. At the same time, it reduces the requirements for operating space, making it suitable for water treatment equipment environments with limited space.

[0125] This structure makes the assembly and disassembly of the filter element assembly 200 more convenient. Operators can replace the filter element without requiring a large space or complicated tools, thus improving maintenance efficiency. After the locking member 121 completes the rotation positioning, it can firmly fix the filter element assembly 200 to the connecting seat 110, ensuring that the filter element will not loosen due to vibration or water flow impact during equipment operation, thus ensuring the operational stability and water treatment effect of the water treatment equipment 10.

[0126] In summary, the water treatment equipment 10 of this utility model, by adopting the above-mentioned connecting device 100, realizes the quick disassembly and assembly and stable connection between the filter element assembly 200 and the connecting seat 110, overcomes the shortcomings of traditional filter element connection methods in terms of ease of disassembly and assembly, space adaptability and structural complexity, and improves the practicality and maintenance efficiency of the equipment.

[0127] Correspondingly, the inner diameter of the pipe section 112 is 7.5-15.4mm, and the spacing between two adjacent pipe sections 112 is 11-19mm.

[0128] The inner diameter of the pipe section 112 should be checked to match the outer diameter D1 of the connecting pipe section 222 to ensure the sealing compression, assembly force and long-term durability during insertion.

[0129] When the spacing between two adjacent pipe sections 112 is limited to 11 mm to 19 mm, it should match the arrangement of the central axis of the connecting pipe section 222 to ensure that the two connecting pipe sections 222 do not interfere with each other when in place and that the internal wall thickness and reinforcing rib layout of the filter cover 220 meet the strength requirements. Several optional values ​​are given: 11 mm, 14 mm, 16 mm, and 19 mm. Correspondingly, when the spacing is 11 mm or 14 mm, the wall thickness of the cover body 221 between the two channels must be guaranteed to be no less than the manufacturing and strength limits (e.g., selected according to the minimum wall thickness requirement of the material), and reinforcing ribs can be arranged between the two channels. When the spacing is close to 19 mm, it is advantageous to set a wider reinforcing structure between the two channels or to accommodate a larger cross-section output / input channel, but it will increase the space occupied by the external connection layout.

[0130] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0131] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0132] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0133] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. 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 different embodiments or examples.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A connection device for water treatment equipment, used for mounting external filter cartridge assemblies, characterized in that, include: Connector; as well as A locking assembly, rotatably connected to the connecting seat, and having a mounting groove for engaging with the filter element assembly and / or a locking element for clamping the filter element assembly; The connector has a hinge hole and a connecting slot communicating with the hinge hole, and the filter element assembly is detachably connected to the connector; the locking assembly can be inserted into the hinge hole from the connecting slot, and the locking assembly is rotatably connected to the hinge hole. The locking assembly includes a locking member and a hinge member. The hinge member includes a shaft portion and a positioning protrusion. The shaft portion is connected to the locking member, and the locking member is used to fix the filter element assembly and the connecting seat. The shaft portion passes through the hinge hole and is rotatably connected to the connecting seat. The positioning protrusion is provided on the outer peripheral wall of the shaft portion. When the shaft portion rotates to the point where the positioning protrusion corresponds to the connecting slot, the positioning protrusion can pass through the connecting slot. When the shaft portion is connected to the hinge hole, the positioning protrusion and the locking member are respectively located on opposite axial sides of the hinge hole.

2. The connecting device for water treatment equipment according to claim 1, characterized in that, The locking assembly further includes a reset member, which is connected to the hinge and the connecting seat respectively, and the reset member is used to drive the locking member to rotate to a preset position.

3. The connecting device for water treatment equipment according to claim 2, characterized in that, The connecting seat includes a seat body, a hinge seat, and a fixing part. The hinge seat and the fixing part are respectively disposed on the seat body. The hinge hole and the connecting groove are disposed on the hinge seat. The fixing part has a first fixing groove, and the shaft part has a second fixing groove. The opposite ends of the reset member are respectively accommodated in the first fixing groove and the second fixing groove.

4. The connecting device for water treatment equipment according to claim 3, characterized in that, The shaft portion is also provided with a receiving groove communicating with the second fixing groove. The reset member includes a first fixing section, a second fixing section and an elastic part. The elastic part is connected to the first fixing section and the second fixing section respectively. The elastic part is housed in the receiving groove. The first fixing section is engaged with the first fixing groove and the second fixing section is engaged with the second fixing groove.

5. The connecting device for water treatment equipment according to claim 4, characterized in that, The elastic part has a spiral structure; And / or, the first fixing groove includes a connected inlet groove and a fixing groove, the fixing groove being located inside the inlet groove, and the first fixing segment being movable from the inlet groove to the fixing groove and engaging with the fixing groove.

6. A water treatment device, characterized in that, include: The connecting device as described in any one of claims 1-5; as well as A filter element assembly is detachably connected to the connector, and the locking element is used to secure the filter element assembly and the connector.

7. The water treatment equipment according to claim 6, characterized in that, The filter element assembly includes a filter element, a filter element cylinder, and a filter element cover. The filter element cover is connected to the filter element cylinder and is used to accommodate the filter element. A limiting surface is provided on the side of the filter element cover away from the filter element cylinder, and the limiting surface is set at an angle to the axial direction of the filter element cylinder. The filter element cover is used to connect with the connecting seat of the water treatment equipment, and the limiting surface is used to engage with the clamping assembly of the water treatment equipment.

8. The water treatment equipment according to claim 7, characterized in that, The filter element cover is provided with a mounting groove, which extends radially along the filter element cover and at least partially penetrates the outer peripheral wall of the filter element cover. The limiting surface is located on one side wall of the mounting groove. And / or, the filter element cover includes a cover body and a connecting tube, the cover body is connected to the filter element cylinder, the connecting tube is used to connect with the connecting seat, the limiting surface is provided on the cover body, and the distance between the end of the connecting tube away from the cover body and the limiting surface is 15-90mm.

Images