Water purification equipment

Abstract

The invention discloses water purification equipment, and relates to the technical field of water purification, the water purification equipment comprises a water pump and a connector assembly, one end of the water pump is provided with a pipe head, according to the technical scheme, an annular groove is formed in the periphery of the pipe head, a clamping hook is arranged on the inner side of a claw in the connector assembly, and the clamping hook is in limiting fit with the annular groove; the relative position of the connector assembly in the axial direction of the pipe head is limited. Through the structural design, the connector assembly cannot loosen and fall off when being subjected to water pressure, so that reliable connection of a water path is ensured, and the problems of water leakage and equipment damage are avoided. Therefore, the connection of the whole water purification equipment is more stable and reliable, and the joint for connecting the water pipe is easy to loosen and fall off.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a water purification equipment. Background Art

[0002] In existing water purification equipment, structures such as water pumps often have to connect water to other structures through joint assemblies. When the joint assemblies are subjected to strong water pressure, there is a risk of loosening and falling off, which may cause water leakage at the joints and in severe cases damage the water pump and surrounding equipment. Summary of the invention

[0003] The main purpose of the present invention is to provide a water purification device, aiming to ensure the stability of the connection between the joint assembly and the water pump.

[0004] To achieve the above object, the water purification device proposed by the present invention comprises:

[0005] A water pump, wherein a pipe head is provided at one end of the water pump, and an annular groove is provided on the outer circumference of the pipe head;

[0006] A joint assembly, the joint assembly includes a connected claw and a main body, the claw is sleeved on the pipe head, a hook is provided on the inner side of the claw, and the hook cooperates with the annular groove to limit the relative position of the joint assembly in the axial direction of the pipe head.

[0007] In one embodiment, the clamping claw includes a connected claw portion and a base, a boss is provided on the outer side of the claw portion, a limiting groove is formed between the boss and the base, and a limiting portion is provided on the main body corresponding to the limiting groove, and the limiting groove limits the limiting groove in the axial direction of the tube head.

[0008] In one embodiment, the limiting portion includes a first step and a second step, the second step is closer to the bottom of the limiting groove than the first step, the first step has a limiting annular surface connected to the second step, and the limiting annular surface is used to contact the boss to limit the relative position of the claw.

[0009] In one embodiment, the main body includes a sleeve and a flow tube, the sleeve is sleeved on the outside of the flow tube, the limiting portion is arranged on the inside of the sleeve, the flow tube covers the tube head and the flow tube and the tube head are sealed and connected.

[0010] In one embodiment, the flow pipe includes a first pipe section and a second pipe section, a protrusion is provided on the outer side of the first pipe section, a slot is formed between the protrusion and the second pipe section, and a clamping portion is provided on the inner side of the sleeve, and the clamping portion is clamped in the slot.

[0011] In one embodiment, a guide surface is provided on a side of the clamping portion facing away from the clamping claw.

[0012] In one embodiment, a slot is formed between the sleeve and the limiting portion, and the first tube section at least partially extends into the slot.

[0013] In one embodiment, the protrusion is interference fit with the inner wall of the sleeve.

[0014] In one embodiment, a sealing ring is provided between the flow tube and the tube head.

[0015] In one embodiment, the pipe head is configured as a water outlet pipe.

[0016] The technical solution of the present invention adopts an annular groove on the outer periphery of the pipe head, and a hook is provided on the inner side of the claw in the joint assembly, so that the hook and the annular groove are limitedly matched to limit the relative position of the joint assembly in the axial direction of the pipe head. Through this structural design, the joint assembly will not loosen or fall off when subjected to water pressure, thereby ensuring a reliable connection of the waterway and avoiding problems such as water leakage and equipment damage. As a result, the connection of the entire water purification equipment is more stable and reliable, and the problem of the joint connecting the water pipe being easily loosened and falling off is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of the water pump and the joint assembly in the water purification equipment provided by the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle joint assembly and the water pump being separated;

[0020] Figure 3 Based Figure 1 A schematic diagram of the structure in a cross-sectional view;

[0021] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0023] Figure 6 It is a schematic diagram of the structure in which the claw and the main body are separated;

[0024] Figure 7 It is an exploded view of the joint assembly;

[0025] Figure 8 It is a schematic diagram of the structure of the limiting part and the package;

[0026] Fig. 9 Schematic diagram of the structure of the flow tube.

[0027] Description of Figure Numbers:

[0028] 100, water pump; 200, joint assembly; 300, main body; 1, pipe head; 11, annular groove; 2, claw; 21, claw; 21, boss; 212, hook; 22, limit groove; 23, base; 3, limit part; 31, first step; 311, limit annular surface; 32, second step; 4, sleeve; 41, clamping part; 411, guide surface; 42, slot; 5, flow pipe; 51, first pipe section; 511, raised part; 52, second pipe section; 53, clamping groove; 6, sealing ring.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] In existing water purification equipment, structures such as water pumps often have to connect water to other structures through joint assemblies. When the joint assemblies are subjected to strong water pressure, there is a risk of loosening and falling off, which may cause water leakage at the joints and in severe cases damage the water pump and surrounding equipment.

[0034] In view of this, the present invention provides a water purification device.

[0035] See also Figures 1 to 5 In one embodiment of the present invention, the water purification equipment includes a water pump 100 and a joint assembly 200, wherein a pipe head 1 is provided at one end of the water pump 100, and an annular groove 11 is provided on the outer periphery of the pipe head 1; the joint assembly 200 includes a connected claw 2 and a main body 300, wherein the claw 2 is sleeved on the pipe head 1, and a hook 212 is provided on the inner side of the claw 2, and the hook 212 is limitedly matched with the annular groove 11 to limit the relative position of the joint assembly 200 on the pipe head 1 in the axial direction.

[0036] Specifically, the water purification equipment includes a water pump 100 and a joint assembly 200. A pipe head 1 is provided at one end of the water pump 100, and an annular groove 11 is provided on the outer periphery of the pipe head 1. The joint assembly 200 includes a claw 2 and a main body 300 connected to each other. The claw 2 is sleeved on the pipe head 1, and a hook 212 is provided on the inner side of the claw 2. The hook 212 and the annular groove 11 are limited to limit the relative position of the joint assembly 200 in the axial direction of the pipe head 1. The limit cooperation between the hook 212 and the annular groove 11 can effectively prevent the risk of the joint assembly 200 loosening and falling off when subjected to strong water pressure. Through this structural design, the position of the joint assembly 200 in the axial direction of the pipe head 1 is effectively limited, thereby ensuring the reliable connection of the waterway and avoiding the problems of leakage and equipment damage.

[0037] The claw 2 is a part of the joint assembly 200, and the hook 212 is a structure on the inner side of the claw 2, which is used to limit the annular groove 11 on the pipe head 1. This design ensures the stable connection of the joint assembly 200 on the pipe head 1 of the water pump 100. The implementation environment includes structures such as the water pump 100, the pipe head 1 and the joint assembly 200 of the water purification equipment. It should be noted that in order to ensure that the hook 212 has sufficient structural strength, the hook 212 can be set to a metal material, and the claw 2 is injection molded on the outside of the hook 212.

[0038] Optionally, the hook 212 can be implemented in a variety of ways, such as a single hook 212 or a plurality of hooks 212. The hook 212 can be matched with the annular groove 11 by different manufacturing processes, such as injection molding or metal processing. The connection between the claw 2 and the main body 300 can also be connected in a variety of ways, such as welding, threaded connection, etc. The matching of the hook 212 and the annular groove 11 ensures the stability of the joint assembly 200 on the pipe head 1, thereby avoiding the risk of loosening and falling off.

[0039] The technical solution of the present invention adopts an annular groove 11 formed on the outer periphery of the pipe head 1, and a hook 212 is provided on the inner side of the claw of the joint assembly 200, so that the hook 212 and the annular groove 11 are limitedly matched, thereby limiting the relative position of the joint assembly 200 in the axial direction of the pipe head 1. Through this structural design, the joint assembly 200 will not loosen or fall off when subjected to water pressure, thereby ensuring a reliable connection of the waterway and avoiding the problems of water leakage and equipment damage. As a result, the connection of the entire water purification equipment is more stable and reliable, and the problem of the joint connecting the water pipe being easily loosened or falling off is solved.

[0040] Further, in one embodiment, see Figure 4 , Figure 6 and Figure 7 The claw 2 includes a claw portion 21 and a base 23 connected to each other, a boss 211 is provided on the outer side of the claw portion 21, a limiting groove 22 is formed between the boss 211 and the base 23, and the main body 300 is provided with a limiting portion 3 corresponding to the limiting groove 22, and the limiting groove 22 limits the axial direction of the tube head 1.

[0041] Specifically, the claw portion 21 and the base 23 may be welded or integrally injection molded. The cooperation between the limiting groove 22 and the limiting portion 3 allows the joint assembly 200 to remain stable when subjected to strong water pressure and will not easily loosen or fall off, thereby eliminating the risk of the joint assembly 200 loosening or falling off under water pressure.

[0042] The design of the limit groove 22 and the limit portion 3 can be implemented in a variety of ways. For example, the width and depth of the limit groove 22 can be adjusted according to the specific water pressure conditions to ensure effective limit under different water pressure conditions. The limit portion 3 can be designed as a raised structure or an embedded design to increase the stability of the limit. In addition, the material selection of the limit groove 22 and the limit portion 3 can also be optimized according to the actual use environment, such as selecting corrosion-resistant and wear-resistant materials to improve the durability of the overall structure.

[0043] The present application provides a boss 211 on the outside of the claw 2, and forms a limit groove 22 between the boss 211 and the base 23, and the main body 300 provides a limit part 3 corresponding to the limit groove 22, so as to ensure that the limit groove 22 is at the upper limit of the axial direction of the pipe head 1. As a result, the joint assembly 200 can remain stable when subjected to strong water pressure and will not loosen or fall off easily, thus solving the risk of the joint assembly 200 loosening or falling off under water pressure in the prior art, and significantly improving the reliability and service life of the water purification equipment.

[0044] In one embodiment, see Figure 4 and Figure 8 The limiting portion 3 includes a first step 31 and a second step 32. The second step 32 is closer to the bottom of the limiting groove 22 than the first step 31. The first step 31 has a limiting annular surface 311 connected to the second step 32. The limiting annular surface 311 is used to abut against the boss 211 to limit the relative position of the claw 2.

[0045] It should be noted that by setting the structure and position of the limit portion 3, especially by the interference fit between the limit ring surface 311 and the boss 211, the position of the joint assembly 200 can be stabilized to ensure that it will not loosen when subjected to water pressure, thereby solving the risk of the joint assembly 200 loosening and falling off when subjected to strong water pressure. The limit portion 3 includes a first step 31 and a second step 32, and the first step 31 and the second step 32 are connected by a limit ring surface 311, and the limit ring surface 311 is used to interfere with the boss 211, thereby limiting the relative position of the claw 2, so that the claw 2 can be retracted to make the hook 212 and the annular groove 11 fit more tightly. Through this design, the limit portion 3 can effectively prevent the joint assembly 200 from loosening and falling off when subjected to strong water pressure.

[0046] The first step 31 and the second step 32 of the limiting portion 3 are both arranged in an annular platform. Specifically, the first step 31 and the second step 32 can be formed by mechanical processing or by one-step molding of a mold. The limiting annular surface 311 can be designed into different shapes to meet different usage requirements. The shape and size of the boss 211 can also be adjusted according to actual applications to ensure a close fit with the limiting annular surface 311. As a preferred embodiment, the limiting annular surface 311 can be made of wear-resistant material to improve its durability and reliability.

[0047] Through the above technical solution, the structural design of the limit part 3 of the present application can effectively solve the problem of the joint assembly 200 loosening and falling off when subjected to strong water pressure in the prior art. Compared with the prior art, the present application can more stably fix the position of the joint assembly 200 through the interference cooperation between the limit ring surface 311 and the boss 211, avoiding the loosening and falling phenomenon caused by water pressure, thereby improving the reliability and service life of the water purification equipment.

[0048] In one embodiment, see Figure 4 , Figure 6 as well as Figure 7 The main body 300 includes a sleeve 4 and a flow tube 5, the sleeve 4 is sleeved on the outside of the flow tube 5, the limiting portion 3 is arranged on the inside of the sleeve 4, the flow tube 5 covers the pipe head 1 and the flow tube 5 and the pipe head 1 are sealed and connected.

[0049] Specifically, the design of the sleeve 4 and the flow tube 5 ensures the sealing and stability when the water pump 100 is connected to other structures. The sleeve 4 is sleeved on the outside of the flow tube 5 to provide additional protection and support. The limiter 3 is arranged on the inside of the sleeve 4 to further limit the movement of the flow tube 5 and ensure the stability of the connection. The flow tube 5 covers the pipe head 1 and is sealed therewith, which solves the sealing problem when the water pump 100 is connected to other structures and prevents water leakage.

[0050] The limiting part 3 and the sleeve 4 are both annularly arranged, and the connection between the limiting part 3 and the sleeve 4 can be achieved in a variety of ways, such as an integrally formed structure, or the limiting part 3 can be fixed to the inner side of the sleeve 4 by bonding, clamping, etc. The sealed connection between the flow pipe 5 and the pipe head 1 can be achieved by providing a sealing ring 6, using a sealant, etc., to ensure the sealing effect.

[0051] The present application effectively solves the sealing and stability problems when the water pump 100 is connected to other structures by providing a sheath 4 and a flow pipe 5 in the main body 300, and providing a limiter 3 inside the sheath 4. Compared with the prior art, the present application provides a more reliable seal and a stable connection, avoiding the risk of the water pump 100 loosening or falling off when subjected to water pressure, thereby improving the overall reliability and service life of the water purification device.

[0052] In one embodiment, see Figure 4 and Fig. 9 The flow pipe 5 includes a first pipe section 51 and a second pipe section 52. The protrusion 511 is arranged on the outside of the first pipe section 51. A clamping groove 53 is formed between the protrusion 511 and the second pipe section 52. The inner side of the sleeve 4 is provided with a clamping portion 41, and the clamping portion 41 is clamped in the clamping groove 53.

[0053] Specifically, the inner clamping portion 41 of the sleeve 4 is clamped in the clamping groove 53, so as to effectively prevent the joint assembly 200 from loosening and falling off when subjected to strong water pressure, thereby solving the problem of water leakage that may occur during the use of the joint assembly 200.

[0054] Furthermore, the first pipe section 51 and the second pipe section 52 may be integrally formed in a mold, or may be fixed together by threaded connection, welding or clamping. The protrusion 511 may be an annular protrusion or a plurality of distributed protrusion structures. The depth and width of the clamping groove 53 should match the size of the clamping portion 41 to ensure that the clamping portion 41 can be firmly clamped in the clamping groove 53. The material of the sleeve 4 may be selected to be high pressure resistant and corrosion resistant to improve service life and reliability.

[0055] The present application achieves stability of the joint assembly 200 when subjected to strong water pressure by providing the groove 53 between the protrusion 511 on the outside of the first pipe section 51 and the second pipe section 52, and the clamping portion 41 on the inside of the sleeve 4, thereby avoiding the risk of loosening and falling off. Compared with the prior art, the technical solution of the present application can more effectively prevent the joint assembly 200 from leaking during use, thereby improving the reliability and safety of the water purification equipment.

[0056] According to the above embodiment, in one embodiment, please refer to Figure 8 A guide surface 411 is provided on a side of the clamping portion 41 facing away from the clamping claw 2 .

[0057] It is understandable that the guide surface 411 helps guide the clamping portion 41 into the correct position during installation, thereby ensuring that the clamping portion 41 and other components cooperate more closely and firmly, reducing the risk of loosening and falling off when subjected to water pressure. In this way, the guide surface 411 plays an important role in solving the problem of the joint assembly 200 loosening and falling off when subjected to strong water pressure.

[0058] Specifically, the guide surface 411 can be designed into different shapes, such as an inclined surface, an arc surface or a conical surface, so as to better guide the clamping portion 41. In a specific implementation, the guide surface 411 can be made of the same material as the clamping portion 41 to ensure that it has sufficient strength and durability during use. Furthermore, the guide surface 411 can also be surface treated, such as polishing or coating with a lubricating material, to reduce friction during installation and improve installation efficiency.

[0059] By providing the guide surface 411, the present application can effectively solve the technical problem in the prior art that the joint assembly 200 becomes loose and falls off when subjected to strong water pressure. Compared with the prior art, the technical solution of the present application can ensure that the installation of the joint assembly 200 is more stable, significantly reduce the risk of water leakage, and improve the overall reliability and service life of the water purification equipment.

[0060] In one embodiment, please continue to refer to Figure 8 A slot 42 is formed between the sleeve 4 and the limiting portion 3 , and the first pipe section 51 at least partially extends into the slot 42 .

[0061] The slot 42 formed between the sleeve 4 and the limiting portion 3 is designed so that the first pipe section 51 at least partially extends into the slot 42. In solving the design problem of the slot 42 between the sleeve 4 and the limiting portion 3, the slot 42 between the sleeve 4 and the limiting portion 3 provides an accommodating space, and the first pipe section 51 partially extends into the slot 42, achieving a more stable connection and avoiding the risk of loosening and falling off due to water pressure.

[0062] A more reliable and stable connection structure is achieved by designing a slot 42 between the sleeve 4 and the limiting portion 3, and allowing the first pipe section 51 to at least partially extend into the slot 42. Compared with the prior art, the design of the present application effectively solves the risk of loosening and falling off of the joint assembly 200 when subjected to strong water pressure, thereby reducing the possibility of water leakage and protecting the water pump 100 and surrounding equipment.

[0063] In one embodiment, see Figure 4 The protrusion 511 is interference fit with the inner wall of the sleeve 4.

[0064] The technical feature included in the present application is that the protrusion 511 has an interference fit with the inner wall of the sleeve 4. The interference fit can increase the stability of the joint assembly 200, prevent it from loosening or falling off when subjected to strong water pressure, thereby solving the risk problem that the joint assembly 200 may loosen or fall off under the action of water pressure. By adopting the scheme of interference fit between the protrusion 511 and the inner wall of the sleeve 4, it can be ensured that the joint assembly 200 remains stable when subjected to strong water pressure, avoiding loosening and falling off, thereby improving the safety and reliability of the water purification equipment.

[0065] Specifically, the technical feature of the interference fit between the protrusion 511 and the inner wall of the sleeve 4 can be achieved in a variety of ways. For example, the protrusion 511 can be designed as an annular protrusion, and the inner wall of the sleeve 4 is correspondingly designed to have an inner diameter slightly smaller than the outer diameter of the protrusion 511, so as to form an interference fit during assembly. Another way is that the protrusion 511 can be set as a plurality of protrusions distributed on the circumference, and the inner wall of the sleeve 4 is correspondingly designed to have a plurality of grooves that match the protrusions. Through this design, the effect of the interference fit can be further enhanced to ensure the stability of the joint assembly 200 under the action of water pressure.

[0066] In one embodiment, please continue to refer to Figure 4 A sealing ring 6 is provided between the flow pipe 5 and the pipe head 1.

[0067] It should be noted that by providing a sealing ring 6 between the flow pipe 5 and the pipe head 1, water leakage can be effectively prevented and the sealing of the waterway can be ensured. The sealing ring 6 plays a key role in solving the sealing problem between the flow pipe 5 and the pipe head 1. This design can not only improve the sealing performance of the water purification equipment, but also extend the service life of the equipment.

[0068] The sealing ring 6 can be implemented in various ways. For example, the sealing ring 6 can be made of rubber material with good elasticity and corrosion resistance. The sealing ring 6 can be embedded in the connection between the flow tube 5 and the pipe head 1, and achieve a sealing effect through compression deformation. As a preferred embodiment, the sealing ring 6 can be arranged on the inner wall of the flow tube 5, and achieve sealing by closely contacting with the outer wall of the pipe head 1. In addition, the sealing ring 6 can also be designed as a multi-layer structure to enhance its sealing performance.

[0069] The present application solves the problem in the prior art that the joint assembly 200 of the water purification equipment may loosen and fall off under high water pressure, causing water leakage, by providing a sealing ring 6 between the flow tube 5 and the pipe head 1. Compared with the prior art, the design of the present application can effectively improve the sealing performance of the water purification equipment and ensure the stability and safety of the waterway. Therefore, the present application not only improves the reliability of the water purification equipment, but also reduces the maintenance cost, and has significant practical value.

[0070] In one embodiment, see Figure 2 and Figure 3 , the pipe head 1 is configured as a water outlet pipe.

[0071] It should be noted that, considering the limiting direction in the above embodiment, including but not limited to: the limiting cooperation between the hook 212 and the annular groove 11, the limiting cooperation between the boss 211 and the limiting groove 22, the pipe head 1 is configured as a water outlet pipe, that is, Figure 3 For example, the water flow direction is from left to right, that is, from the pipe head 1 to the joint assembly 200 , so the above-mentioned limiting cooperation has a better effect of preventing the joint from being separated from the pipe head 1 .

[0072] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water purification device, characterized in that: include: A water pump, wherein a pipe head is provided at one end of the water pump, and an annular groove is provided on the outer circumference of the pipe head; A joint assembly, the joint assembly includes a connected claw and a main body, the claw is sleeved on the pipe head, a hook is provided on the inner side of the claw, and the hook cooperates with the annular groove to limit the relative position of the joint assembly in the axial direction of the pipe head.

2. The water purification device according to claim 1, characterized in that: The clamping claw includes a connected claw part and a base, a boss is arranged on the outer side of the claw part, a limiting groove is formed between the boss and the base, a limiting part is arranged on the main body corresponding to the limiting groove, and the limiting groove limits the limiting groove in the axial direction of the pipe head.

3. The water purification device according to claim 2, characterized in that: The limiting portion includes a first step and a second step, the second step is closer to the bottom of the limiting groove than the first step, the first step has a limiting annular surface connected to the second step, and the limiting annular surface is used to abut against the boss to limit the relative position of the claw.

4. The water purification device according to claim 3, characterized in that: The main body comprises a sleeve and a flow tube, the sleeve is sleeved on the outside of the flow tube, the limiting portion is arranged on the inside of the sleeve, the flow tube covers the pipe head and the flow tube and the pipe head are sealed and connected.

5. The water purification device according to claim 4, characterized in that: The flow pipe includes a first pipe section and a second pipe section. A protrusion is arranged on the outer side of the first pipe section. A clamping groove is formed between the protrusion and the second pipe section. A clamping part is arranged on the inner side of the sleeve. The clamping part is clamped in the clamping groove.

6. The water purification device according to claim 5, characterized in that: A guide surface is arranged on a side of the clamping portion facing away from the clamping claw.

7. The water purification device according to claim 5, characterized in that: A slot is formed between the sleeve and the limiting portion, and the first pipe section at least partially extends into the slot.

8. The water purification device according to claim 5, characterized in that: The protrusion is interference-fitted with the inner wall of the sleeve.

9. The water purification device according to claim 4, characterized in that: A sealing ring is arranged between the flow pipe and the pipe head.

10. The water purification device according to any one of claims 1 to 9, characterized in that: The pipe head is configured as a water outlet pipe.

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