Runner assembly

Abstract

The utility model provides a runner assembly which comprises a medicine cylinder, a connecting base and an adjusting piece, the connecting base is arranged at the end of the medicine cylinder in a sleeved mode, one end of the connecting base is communicated with the medicine cylinder, the other end of the connecting base forms the end of the runner assembly, and the adjusting piece is connected with the medicine cylinder and can drive the connecting base to move relative to the medicine cylinder in the length direction of the medicine cylinder. According to the flow channel assembly, the connecting base at the end of the medicine cylinder can move in the length direction of the medicine cylinder so that the overall length of the flow channel assembly can be changed in a telescopic mode, and the adjusting piece can drive the connecting base to stretch out. Compared with a scheme that two ends of a cartridge are respectively connected with a pipeline joint in an assembling manner in the prior art, the flow channel assembly can be effectively mounted and replaced more conveniently, the maintenance operation difficulty of the water purification equipment is reduced, and the maintenance efficiency of the water purification equipment is improved. The maintenance efficiency of the water purification equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to a flow channel component. Background Technology

[0002] Ultrapure water (UP water) refers to water that contains almost only water molecules and no other impurities, bacteria, viruses, organic matter, or minerals. Due to its high purity and lack of impurities, ultrapure water plays an irreplaceable role in environments requiring extremely high purity and is widely used in various fields such as food production, battery manufacturing, biopharmaceuticals, chemical production, laboratory glassware cleaning, and photomask preparation.

[0003] The preparation of ultrapure water typically involves multiple techniques, such as distillation, deionization, and reverse osmosis. This process requires the use of various types of semi-permeable membranes to filter out different solutes from the water. However, these membranes gradually become clogged over time, necessitating frequent replacement with new membranes. To facilitate membrane replacement, these membranes are usually encapsulated in cartridges. The cartridges are connected to the purified water pipeline at both ends, allowing water to flow through them and be filtered by the membranes within. When the membrane in the cartridge reaches the end of its lifespan, the cartridge can be directly removed and replaced, reducing the difficulty of membrane replacement.

[0004] However, existing cartridge structures usually require complex connection features at both ends. When installing the cartridge, it is necessary to perform complicated operations to assemble and connect both ends of the cartridge to the pipe interface, resulting in high maintenance difficulty and low maintenance efficiency of the water purification system.

[0005] Therefore, how to provide a cartridge structure that is easy to assemble and disassemble has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a flow channel assembly that can be quickly and easily fixedly connected to and detached from a water purification device through an integral telescopic mechanism, improving the convenience of installing and replacing the flow channel assembly and ensuring the maintenance efficiency of the water purification device.

[0007] To achieve the above objectives, this utility model provides a flow channel assembly, including a cartridge, a connecting seat, and an adjusting member. The connecting seat is sleeved on the end of the cartridge, one end of the connecting seat is connected to the cartridge, and the other end of the connecting seat forms the end of the flow channel assembly. The adjusting member is connected to the cartridge and can drive the connecting seat to move relative to the cartridge along the length direction of the cartridge.

[0008] Optionally, the adjusting member is sleeved on the connecting seat, and the position of the adjusting member along the length direction of the cartridge is fixed. At least one of the inner wall of the adjusting member and the outer surface of the connecting seat has a threaded structure, and the other has a mating structure corresponding to the threaded structure. The mating structure can cooperate with the threaded structure to drive the connecting seat to move along the length direction of the cartridge when the adjusting member rotates.

[0009] Optionally, the adjusting component includes a rotating cylinder and a limiting ring connected to each other. The rotating cylinder and the limiting ring are both sleeved on the connecting seat. The limiting ring is located at the end of the rotating cylinder away from the cartridge, and the outer diameter of the limiting ring is larger than the outer diameter of the rotating cylinder.

[0010] Optionally, a plurality of vertical grooves are formed on the outer wall of the rotating cylinder, the vertical grooves extending along the axial direction of the cartridge, and the plurality of vertical grooves are circumferentially spaced.

[0011] Optionally, the threaded structure includes a threaded groove formed on the inner wall of the adjusting member, and the mating structure includes an external threaded protrusion formed on the outer wall of the connecting seat. The external threaded protrusion is accommodated in the threaded groove, and the threaded groove can drive the external threaded protrusion to move the connecting seat along the length direction of the cartridge when the adjusting member rotates.

[0012] Optionally, the flow channel assembly further includes a first positioning structure, which is fixedly connected to the connecting seat and located on one side of the connecting seat in the radial direction.

[0013] Optionally, the first positioning structure includes a positioning plate, which is perpendicular to the axis of the connecting seat.

[0014] Optionally, the first positioning structure further includes a plurality of reinforcing ribs, which are disposed on the surface of the positioning plate and extend along the surface of the positioning plate.

[0015] Optionally, the first positioning structure is integral with the connecting seat.

[0016] Optionally, the cartridge includes a flow tube, a limiting plate, and a connecting tube. The limiting plate seals the end of the flow tube, one end of the connecting tube passes through the limiting plate and communicates with the flow tube, the other end of the connecting tube forms the end of the cartridge, and the connecting seat is sleeved on the connecting tube.

[0017] Optionally, the outer wall of the connecting cylinder has a first annular sealing groove extending circumferentially, and a sealing ring is provided in the first annular sealing groove.

[0018] Optionally, the flow tube and the limiting plate are formed as one unit.

[0019] Optionally, the limiting plate is welded to the end of the flow tube.

[0020] Optionally, a positioning protrusion is formed on one of the outer surface of the limiting plate and the surface of the adjusting member facing the limiting plate, and a positioning groove is formed on the other. When the adjusting member is rotated to the point where the circumferential position of the positioning protrusion is aligned with the circumferential position of the positioning groove, the positioning protrusion can be accommodated in the positioning groove.

[0021] Optionally, both the positioning protrusion and the positioning groove extend radially.

[0022] Optionally, at least one pair of positioning protrusions are formed on the outer surface of the limiting plate, and each pair of positioning protrusions is symmetrically arranged in the radial direction; multiple pairs of positioning grooves are formed on the surface of the adjusting member facing the limiting plate, each pair of positioning grooves is symmetrically arranged in the radial direction, and the multiple pairs of positioning grooves are distributed circumferentially.

[0023] Optionally, the connecting seat includes an outer connecting cylinder and a first inner cylinder, the outer connecting cylinder is sleeved outside the first inner cylinder, and the end of the first inner cylinder away from the medicine cartridge is connected to the end of the outer connecting cylinder away from the medicine cartridge;

[0024] The cartridge also includes a second inner cylinder, and the connecting cylinder is sleeved outside the second inner cylinder. One end of the second inner cylinder is connected to the flow tube. The inner sidewall of the first inner cylinder is slidably and sealingly connected to the outer sidewall of the second inner cylinder, and the inner sidewall of the outer connecting cylinder is slidably and sealingly connected to the outer sidewall of the connecting cylinder.

[0025] Optionally, the outer wall of the second inner cylinder has a circumferentially extending second annular sealing groove, and a sealing ring is provided in the second annular sealing groove.

[0026] Optionally, the end of the cartridge case away from the connecting seat has a flow connector and at least one second positioning structure, the flow connector being coaxially arranged with the connecting seat, and the second positioning structure being located on one side of the flow connector along the radial direction.

[0027] Optionally, the cartridge case further includes a sealing plate, the limiting plate and the sealing plate respectively sealing both ends of the flow tube, the flow connector and the second positioning structure are both fixedly connected to the sealing plate, and the flow connector passes through the sealing plate and communicates with the flow tube.

[0028] Optionally, the sealing plate, the overflow connector, and the second positioning structure are formed as a single unit.

[0029] Optionally, the second positioning structure has a hollowed-out groove inside, with the opening of the hollowed-out groove facing away from the flow tube.

[0030] Optionally, the sealing plate is welded to the end of the flow tube.

[0031] In the flow channel assembly provided by this utility model, a connecting seat is sleeved at the end of the cartridge. The connecting seat can move along the length direction of the cartridge to allow the overall length of the flow channel assembly to expand and contract. The adjusting component can drive the connecting seat to extend. Thus, when connecting the flow channel assembly to the pipeline of the purification equipment, the two ends of the flow channel assembly can be aligned with the pipeline connectors first. Then, the adjusting component can be used to drive the connecting seat to extend axially, thereby extending the flow channel assembly and allowing the two ends of the flow channel assembly to press against the pipeline connectors on both sides, thus ensuring the connection stability between the flow channel assembly and the water purification equipment. Similarly, when disassembling the flow channel assembly, it is only necessary to retract the connecting seat through the adjusting component to shorten the flow channel assembly as a whole, so that the flow channel assembly can be quickly removed from the water purification equipment.

[0032] The flow channel assembly provided by this utility model can be quickly and easily fixedly connected to and detached from the water purification equipment through an overall telescopic mechanism. Compared with the existing technology where the two ends of the medicine cartridge are respectively assembled and connected to the pipe joints, this can effectively improve the convenience of installing and replacing the flow channel assembly, thereby reducing the difficulty of maintaining the water purification equipment and ensuring the maintenance efficiency of the water purification equipment. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the flow channel assembly provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the flow channel assembly provided in the embodiment of the present invention in the retracted state of the connecting seat;

[0036] Figure 3 This is a schematic diagram of the flow channel assembly provided in this embodiment of the present invention with the connecting seat extended.

[0037] Figure 4 This is a schematic diagram of the disassembled structure of the flow channel assembly provided in this embodiment of the utility model;

[0038] Figure 5 This is a schematic diagram of the structure of the adjusting component in the flow channel assembly provided in this embodiment of the utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the end of the medicine cartridge in the flow channel assembly provided in this embodiment of the utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100. Cartridge; 110. Flow tube; 121. Limiting plate; 122. Connecting tube; 123. Second inner tube; 131. Flow connector; 132. Second positioning structure; 133. Sealing plate; 200. Connecting seat; 201. External threaded protrusion; 210. External connecting tube; 220. First inner tube; 300. Adjusting component; 301. Threaded groove; 310. Rotating tube; 311. Vertical groove; 320. Limiting ring; 410. Positioning protrusion; 420. Positioning groove; 430. First positioning structure; 431. Positioning plate; 432. Reinforcing rib. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0043] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0044] To solve the above-mentioned technical problems, this utility model provides a flow channel component, such as... Figures 1 to 4 As shown, the flow channel assembly includes a cartridge 100, a connecting seat 200, and an adjusting member 300. The connecting seat 200 is sleeved on the end of the cartridge 100. One end of the connecting seat 200 is connected to the cartridge 100, and the other end of the connecting seat 200 forms the end of the flow channel assembly. The adjusting member 300 is connected to the cartridge 100 and can drive the connecting seat 200 to move relative to the cartridge 100 along the length direction of the cartridge 100.

[0045] It is understandable that both ends of the flow channel assembly are used to connect to the pipe joints of the purification equipment, so that the cartridge 100 and the membrane structure set inside the cartridge 100 can be connected to the water flow path to achieve the effect of purifying the water.

[0046] In the flow channel assembly provided by this utility model, a connecting seat 200 is sleeved at the end of the cartridge 100. The connecting seat 200 can move along the length direction of the cartridge 100 to allow the overall length of the flow channel assembly to expand and contract. The adjusting member 300 can drive the connecting seat 200 to extend. Thus, when connecting the flow channel assembly to the pipeline of the purification equipment, the two ends of the flow channel assembly can be aligned with the pipeline connectors first. Then, the adjusting member 300 can be used to drive the connecting seat 200 to push out axially, which can extend the flow channel assembly and make the two ends of the flow channel assembly press against the pipeline connectors on both sides, thereby ensuring the connection stability between the flow channel assembly and the water purification equipment. Similarly, when disassembling the flow channel assembly, it is only necessary to retract the connecting seat 200 through the adjusting member 300 to shorten the flow channel assembly as a whole, so that the flow channel assembly can be quickly removed from the water purification equipment.

[0047] The flow channel assembly provided by this utility model can be quickly and easily fixedly connected to and detached from the water purification equipment through an overall telescopic mechanism. Compared with the existing technology where the two ends of the medicine cartridge are respectively assembled and connected to the pipe joints, this can effectively improve the convenience of installing and replacing the flow channel assembly, thereby reducing the difficulty of maintaining the water purification equipment and ensuring the maintenance efficiency of the water purification equipment.

[0048] As a preferred embodiment of this utility model, such as Figures 2 to 5 As shown, the adjusting member 300 is sleeved on the connecting seat 200, and the position of the adjusting member 300 along the length direction of the cartridge 100 is fixed. At least one of the inner wall of the adjusting member 300 and the outer surface of the connecting seat 200 has a threaded structure, and the other has a mating structure corresponding to the threaded structure (in Figures 2 to 5 In the embodiment shown, the mating structure is also threaded. When the adjusting member 300 rotates, the mating structure works with the threaded structure to drive the connecting seat 200 to move along the length of the cartridge 100.

[0049] It is understood that the angle of the connecting seat 200 around the axis is fixed relative to the cartridge 100 and will not rotate with the adjusting member 300. In this embodiment of the invention, the adjusting member 300 is a rotating member. When installing the flow channel assembly into the water purification equipment, only the adjusting member 300 needs to be rotated. The threaded structure converts the rotation of the adjusting member 300 into the elongation of the flow channel assembly, thereby ensuring that both ends of the flow channel assembly stably press against the pipe joints on both sides, greatly simplifying the installation operation. Furthermore, the threaded structure has a certain self-locking capability, which can further ensure the connection stability between the flow channel assembly and the pipe joints on both sides.

[0050] Furthermore, the flow channel assembly provided by this utility model has a simple structure. Compared with the existing technology where both ends of the medicine cartridge are equipped with complex docking mechanisms, the solution of this utility model can effectively prevent the two ends of the flow channel assembly from becoming loose or relatively shaking with the corresponding pipe joints, ensuring the connection reliability of the two ends of the flow channel assembly, while reducing the material and manufacturing costs of the flow channel assembly.

[0051] To improve the ease of installation and operation, as an optional embodiment of this utility model, such as Figures 2 to 5 As shown, the adjusting component 300 includes a rotating cylinder 310 and a limiting ring 320 connected to each other. Both the rotating cylinder 310 and the limiting ring 320 are sleeved on the connecting seat 200. The limiting ring 320 is located at the end of the rotating cylinder 310 away from the medicine cartridge 100, and the outer diameter of the limiting ring 320 is larger than the outer diameter of the rotating cylinder 310. The limiting ring 320 is located on the side of the rotating cylinder 310 facing the end of the connecting seat 200, thereby limiting the operator's fingers and ensuring that the operator's fingers only touch the adjusting component 300.

[0052] To further improve the ease of installation and operation, as an optional embodiment of this utility model, such as Figure 4 As shown, a plurality of vertical grooves 311 are formed on the outer wall of the rotating cylinder 310. The vertical grooves 311 extend along the axial direction of the cartridge 100, and the plurality of vertical grooves 311 are circumferentially spaced. The vertical grooves 311 can increase the friction between the operator's fingers and the adjusting member 300, so as to facilitate the application of force when turning the adjusting member 300.

[0053] As an optional embodiment of this utility model, such as Figures 2 to 5 As shown, the threaded structure includes a threaded groove 301 formed on the inner wall of the adjusting member 300, and the mating structure includes an external threaded protrusion 201 formed on the outer wall of the connecting seat 200. The external threaded protrusion 201 is accommodated in the threaded groove 301, and the threaded groove 301 can drive the external threaded protrusion 201 to move the connecting seat 200 along the length direction of the cartridge 100 when the adjusting member 300 rotates. Figure 2 , Figure 3 This is a schematic diagram showing the before and after states of the connecting seat 200 extending as the external thread protrusion 201 moves with the rotation of the thread groove 301.

[0054] In other embodiments of this utility model, the mating structure may also be a non-threaded protrusion formed on the inner wall of the adjusting member 300 or the outer wall of the connecting seat 200. By using the protrusion to rotate and engage with the threaded structure or the thread to rotate and engage with the protrusion, the rotational movement of the adjusting member 300 can be converted into the linear movement of the connecting seat 200 along the axial direction.

[0055] For example, a threaded groove 301 is formed on the inner wall of the adjusting member 300, and at least one protrusion is formed on the outer wall of the connecting seat 200. The protrusion is accommodated in the threaded groove 301, so that when the threaded groove 301 rotates with the adjusting member 300, the protrusion drives the connecting seat 200 to extend and retract axially under the driving action of the threaded groove 301.

[0056] Alternatively, the threaded structure can be an external threaded protrusion 201 formed on the outer wall of the connecting seat 200, and at least one protrusion formed on the inner wall of the adjusting member 300. When the protrusion rotates with the adjusting member 300, it acts on the side of the external threaded protrusion 201 to drive the connecting seat 200 to move axially and extend.

[0057] Understandably, when the flow channel assembly is connected to the purification equipment, the end of the connector 200 contacts the pipe joint. Therefore, under the action of friction, the connector 200 can maintain a constant rotation angle with the cartridge 100.

[0058] To further ensure a smooth installation process, as a preferred embodiment of this utility model, such as... Figure 1 , Figure 4 As shown, the flow channel assembly also includes a first positioning structure 430, which is fixedly connected to the connecting seat 200 and located on one side of the connecting seat 200 in the radial direction. Thus, when the flow channel assembly is connected to the purification equipment, the first positioning structure 430 can cooperate with the feature structure on the purification equipment (e.g., inserted into the corresponding groove on the purification equipment) to ensure that the rotation angle of the connecting seat 200 remains unchanged, thereby ensuring the smoothness of the threaded transmission action.

[0059] As an optional embodiment of this utility model, such as Figure 4 As shown, the first positioning structure 430 includes a positioning plate 431, which is perpendicular to the axis of the connecting seat 200.

[0060] Optionally, such as Figure 4 As shown, the positioning plate 431 is rectangular in shape.

[0061] To ensure the structural strength of the first positioning structure 430, as a preferred embodiment of this utility model, such as Figure 4 As shown, the first positioning structure 430 also includes a plurality of reinforcing ribs 432, which are disposed on the surface of the positioning plate 431 and extend along the surface of the positioning plate 431.

[0062] As an optional embodiment of this utility model, such as Figure 4 As shown, the first positioning structure 430 and the connecting seat 200 are integrated.

[0063] In some embodiments of this utility model, the adjusting member 300 can also drive the connecting seat 200 to extend and retract relative to the cartridge 100 through other forms of transmission mechanisms. For example, the adjusting member 300 can adopt a linear telescopic mechanism in the form of a guide rail, telescopic rod, lead screw, etc. The two ends of the adjusting member 300 are respectively connected to the cartridge 100 and the connecting seat 200. Through the telescopic movement of the adjusting member 300 itself, the connecting seat 200 can be pushed out or pulled back axially, thereby realizing the overall telescopic movement of the flow channel assembly.

[0064] Alternatively, the adjusting member 300 can be directly sleeved on the cartridge 100 and connected to the cartridge 100 through a threaded connection structure. The operator can rotate the adjusting member 300 to move along the cartridge 100, thereby pushing the connecting seat 200 sleeved on the cartridge 100 to move axially.

[0065] Alternatively, a gear structure can be movably installed on the adjusting component 300, and a rack structure extending axially can be provided on the connecting seat 200. The operator can drive the rack to move axially by rotating the gear and utilizing the meshing relationship between the gear and the rack.

[0066] In addition, the adjusting component 300 can also adopt other forms of mechanical structure, which will not be described in detail in this utility model.

[0067] As an optional embodiment of this utility model, such as Figures 2 to 4 As shown, the cartridge 100 includes a flow tube 110, a limiting plate 121, and a connecting tube 122. The limiting plate 121 seals the end of the flow tube 110. One end of the connecting tube 122 passes through the limiting plate 121 and communicates with the flow tube 110. The other end of the connecting tube 122 forms the end of the cartridge 100. The connecting seat 200 is sleeved on the connecting tube 122. When the adjusting member 300 pushes the connecting seat 200 out axially through the threaded groove 301, the limiting plate 121 can provide a supporting force for the adjusting member 300.

[0068] As an optional embodiment of this utility model, such as Figures 2 to 3 As shown, the outer wall of the connecting cylinder 122 has a first annular sealing groove extending circumferentially, and a sealing ring (not shown in the figure) is provided in the first annular sealing groove to ensure the airtightness of the connection between the connecting cylinder 122 and the connecting seat 200.

[0069] As an optional embodiment of this utility model, such as Figures 2 to 3 As shown, the flow tube 110 and the limiting plate 121 are formed as one unit.

[0070] As an optional embodiment of this utility model, the limiting plate 121 is welded to the end of the flow tube 110. For example, when the cartridge 100 is made of plastic, the limiting plate 121 and the flow tube 110 can be connected to each other by hot melt welding.

[0071] Optionally, the limiting plate 121 and the flow tube 110 are connected to each other by laser welding.

[0072] As a preferred embodiment of this utility model, such as Figure 4 , Figure 5 As shown, a positioning protrusion 410 is formed on one of the outer surface of the limiting plate 121 and the surface of the adjusting member 300 facing the limiting plate 121, and a positioning groove 420 is formed on the other (the figure shows the case where the positioning protrusion 410 is formed on the limiting plate 121 and the positioning groove 420 is formed on the adjusting member 300; other embodiments may be the opposite). When the adjusting member 300 is rotated to the point where the circumferential position of the positioning protrusion 410 is aligned with the circumferential position of the positioning groove 420, the positioning protrusion 410 can be accommodated in the positioning groove 420.

[0073] In this embodiment of the utility model, one of the limiting plate 121 and the adjusting member 300 has a positioning protrusion 410 and the other has a positioning groove 420. When the flow channel assembly is connected to the purification equipment, the operator can tighten the adjusting member 300 and rotate it to the position where the positioning protrusion 410 enters the positioning groove 420. The cooperation relationship between the positioning protrusion 410 and the positioning groove 420 is used to ensure the stability of the extension of the connecting seat 200, thereby ensuring the stability of the flow channel assembly installed on the water purification equipment.

[0074] To ensure the force application area between the positioning protrusion 410 and the positioning groove 420, as a preferred embodiment of this utility model, such as Figure 4 , Figure 5 As shown, both the positioning protrusion 410 and the positioning groove 420 extend radially.

[0075] As an optional embodiment of this utility model, such as Figure 4 , Figure 5 As shown, at least one pair of positioning protrusions 410 are formed on the outer surface of the limiting plate 121, and each pair of positioning protrusions 410 is symmetrically arranged in the radial direction; multiple pairs of positioning grooves 420 are formed on the surface of the adjusting member 300 facing the limiting plate 121, each pair of positioning grooves 420 is symmetrically arranged in the radial direction, and the multiple pairs of positioning grooves 420 are distributed at intervals in the circumferential direction.

[0076] As a preferred embodiment of this utility model, such as Figure 2 , Figure 3As shown, the connecting seat 200 includes an outer connecting cylinder 210 and a first inner cylinder 220. The outer connecting cylinder 210 is sleeved outside the first inner cylinder 220, and the end of the first inner cylinder 220 away from the medicine cartridge 100 is connected to the end of the outer connecting cylinder 210 away from the medicine cartridge 100.

[0077] The cartridge 100 also includes a second inner cylinder 123, and a connecting cylinder 122 is sleeved on the outside of the second inner cylinder 123. One end of the second inner cylinder 123 is connected to the flow tube 110. The inner wall of the first inner cylinder 220 is slidably and sealingly connected to the outer wall of the second inner cylinder 123, and the inner wall of the outer connecting cylinder 210 is slidably and sealingly connected to the outer wall of the connecting cylinder 122.

[0078] In this embodiment of the utility model, both the end of the cartridge 100 and the connecting seat 200 adopt a double-layer sleeve structure, and the inner and outer cylinders of the end of the cartridge 100 and the connecting seat 200 are slidably sealed to each other, which further ensures the airtightness of the connection between the cartridge 100 and the connecting seat 200.

[0079] As an optional embodiment of this utility model, such as Figure 2 , Figure 3 As shown, the outer wall of the second inner cylinder 123 has a second annular sealing groove extending circumferentially, and a sealing ring (not shown in the figure) is provided in the second annular sealing groove to ensure the airtightness of the connection between the second inner cylinder 123 and the first inner cylinder 220.

[0080] As an optional embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 6 As shown, the end of the cartridge 100 away from the connecting seat 200 has a flow connector 131 and at least one second positioning structure 132. The flow connector 131 is coaxially arranged with the connecting seat 200, and the second positioning structure 132 is located on the radial side of the flow connector 131. Thus, when the flow channel assembly is connected to the purification equipment, the second positioning structure 132 can cooperate with the feature structure on the purification equipment (e.g., inserted into the corresponding groove on the pipe connector) to ensure that the rotation angle of the cartridge 100 remains unchanged, thereby ensuring the smoothness of the threaded transmission action.

[0081] As an optional embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 6 As shown, the cartridge 100 also includes a sealing plate 133, a limiting plate 121 and a sealing plate 133 respectively sealing both ends of the flow tube 110, a flow connector 131 and a second positioning structure 132 are fixedly connected to the sealing plate 133, and the flow connector 131 passes through the sealing plate 133 and communicates with the flow tube 110.

[0082] As an optional embodiment of this utility model, such as Figure 2 , Figure 3 As shown, the sealing plate 133, the overflow connector 131, and the second positioning structure 132 are integrated into one unit.

[0083] As an optional embodiment of this utility model, such as Figure 6 As shown, the interior of the second positioning structure 132 has a hollow groove, and the opening of the hollow groove faces the side away from the flow tube 110. That is, the interior of the second positioning structure 132 is a vacuum structure to save material costs in manufacturing the second positioning structure 132.

[0084] As an optional embodiment of this utility model, the sealing plate 133 is welded to the end of the flow tube 110. For example, when the cartridge 100 is made of plastic, the sealing plate 133 and the flow tube 110 can be connected to each other by hot melt welding.

[0085] Optionally, the sealing plate 133 and the flow tube 110 are connected to each other by laser welding.

[0086] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A flow channel assembly, characterized in that, The device includes a cartridge (100), a connecting seat (200), and an adjusting member (300). The connecting seat (200) is sleeved on the end of the cartridge (100). One end of the connecting seat (200) is connected to the cartridge (100), and the other end of the connecting seat (200) is formed as the end of the flow channel assembly. The adjusting member (300) is connected to the cartridge (100) and can drive the connecting seat (200) to move relative to the cartridge (100) along the length direction of the cartridge (100). The adjusting member (300) is sleeved on the connecting seat (200), and the position of the adjusting member (300) along the length direction of the cartridge (100) is fixed. At least one of the inner wall of the adjusting member (300) and the outer surface of the connecting seat (200) has a threaded structure, and the other has a matching structure corresponding to the threaded structure. The matching structure can cooperate with the threaded structure to drive the connecting seat (200) to move along the length direction of the cartridge (100) when the adjusting member (300) rotates.

2. The flow channel assembly according to claim 1, characterized in that, The threaded structure includes a threaded groove (301) formed on the inner wall of the adjusting member (300), and the mating structure includes an external threaded protrusion (201) formed on the outer wall of the connecting seat (200). The external threaded protrusion (201) is accommodated in the threaded groove (301), and the threaded groove (301) can drive the external threaded protrusion (201) to move the connecting seat (200) along the length direction of the cartridge (100) when the adjusting member (300) rotates.

3. The flow channel assembly according to claim 1, characterized in that, The flow channel assembly further includes a first positioning structure (430), which is fixedly connected to the connecting seat (200) and located on one side of the connecting seat (200) in the radial direction.

4. The flow channel assembly according to any one of claims 1 to 3, characterized in that, The cartridge (100) includes a flow tube (110), a limiting plate (121), and a connecting tube (122). The limiting plate (121) seals the end of the flow tube (110). One end of the connecting tube (122) passes through the limiting plate (121) and communicates with the flow tube (110). The other end of the connecting tube (122) forms the end of the cartridge (100). The connecting seat (200) is sleeved on the connecting tube (122).

5. The flow channel assembly according to claim 4, characterized in that, A positioning protrusion (410) is formed on one of the outer surface of the limiting plate (121) and the surface of the adjusting member (300) facing the limiting plate (121), and a positioning groove (420) is formed on the other. When the adjusting member (300) rotates to the point where the circumferential position of the positioning protrusion (410) is aligned with the circumferential position of the positioning groove (420), the positioning protrusion (410) can be accommodated in the positioning groove (420).

6. The flow channel assembly according to claim 5, characterized in that, Both the positioning protrusion (410) and the positioning groove (420) extend radially.

7. The flow channel assembly according to claim 5, characterized in that, At least one pair of positioning protrusions (410) are formed on the outer surface of the limiting plate (121), and each pair of positioning protrusions (410) is arranged symmetrically in the radial direction; multiple pairs of positioning grooves (420) are formed on the surface of the adjusting member (300) facing the limiting plate (121), each pair of positioning grooves (420) is arranged symmetrically in the radial direction, and multiple pairs of positioning grooves (420) are distributed at intervals in the circumferential direction.

8. The flow channel assembly according to claim 4, characterized in that, The connecting seat (200) includes an outer connecting cylinder (210) and a first inner cylinder (220). The outer connecting cylinder (210) is sleeved on the outside of the first inner cylinder (220). The end of the first inner cylinder (220) away from the cartridge (100) is connected to the end of the outer connecting cylinder (210) away from the cartridge (100). The cartridge (100) also includes a second inner cylinder (123), and the connecting cylinder (122) is sleeved on the outside of the second inner cylinder (123). One end of the second inner cylinder (123) is connected to the flow tube (110). The inner wall of the first inner cylinder (220) is slidably and sealingly connected to the outer wall of the second inner cylinder (123), and the inner wall of the outer connecting cylinder (210) is slidably and sealingly connected to the outer wall of the connecting cylinder (122).

9. The flow channel assembly according to any one of claims 1 to 3, characterized in that, The cartridge (100) has a flow connector (131) and at least one second positioning structure (132) at one end away from the connecting seat (200). The flow connector (131) is coaxially arranged with the connecting seat (200), and the second positioning structure (132) is located on one side of the flow connector (131) in the radial direction.

10. The flow channel assembly according to claim 4, characterized in that, The cartridge (100) has a flow connector (131) and at least one second positioning structure (132) at one end away from the connecting seat (200). The flow connector (131) is coaxially arranged with the connecting seat (200), and the second positioning structure (132) is located on one side of the flow connector (131) in the radial direction.

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