Pump assembly and water purifier

Abstract

The utility model relates to the technical field of pumps, and discloses a pump assembly and a water purifier, the pump assembly comprises: a housing in which a noise reduction cavity is formed; the pump is arranged in the noise reduction cavity, and a through hole allowing a pipeline of the pump to penetrate through is formed in the shell; the buffering and damping structure is installed in the through hole and used for reducing vibration noise between the pipeline and the shell. The buffering and damping structure is arranged in the through hole and arranged between the pipeline and the through hole in a spaced mode, so that the pipeline of the pump cannot directly collide with the shell when shaking, the buffering and damping structure can achieve the buffering, damping and isolating effects in the middle, noise sources are reduced, and the service life of the pump is prolonged. And meanwhile, the buffer damping structure can block a gap between the pipeline and the through hole, noise in the shell can be effectively prevented from penetrating out of the through hole, and the noise generated when the pump produces water is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically to pump components and water purifiers. Background Technology

[0002] In water purifier systems, water pumps and pressure-stabilizing pumps are common components. The pressure-stabilizing pump is primarily used to pressurize the water circuit of the reverse osmosis membrane and is a key component of the reverse osmosis water purifier. Due to the inherent operating characteristics of the pressure-stabilizing pump, it generates vibration and noise during normal operation, becoming the main source of vibration and noise for the entire machine. Because current pressure-stabilizing pumps are limited by their structural design, it is difficult to reduce their inherent vibration and noise. Generally, external vibration damping and noise reduction structures are needed to control the overall noise and vibration of the machine. In related technologies, most water purifiers rely solely on traditional pressure-stabilizing pump base rubber pads and noise reduction boxes for vibration and noise reduction, with limited effectiveness. Especially with high-flow pressure-stabilizing pumps, it is difficult to control the overall vibration and noise to a low level. Utility Model Content

[0003] In view of this, the present invention provides a pump assembly and a water purifier to solve the problem of high noise in the pump assembly in the prior art.

[0004] In a first aspect, this utility model provides a pump assembly, comprising:

[0005] The outer casing contains a noise-reducing cavity.

[0006] The pump is housed inside the noise reduction chamber, and its outer casing has through holes through which the pump's piping can pass.

[0007] A shock-absorbing structure is installed inside the through-hole to reduce vibration noise between the pipes and the casing.

[0008] Beneficial Effects: By placing the pump within a noise reduction chamber and installing a buffer and shock-absorbing structure within the through-hole on the outer casing through which the pump's piping passes, the buffer and shock-absorbing structure, positioned between the piping and the through-hole, prevents the pump's piping from directly colliding with the outer casing when it vibrates. This structure acts as a buffer, damping, and isolation mechanism, reducing noise sources. Simultaneously, it seals the gap between the piping and the through-hole, effectively preventing noise from inside the casing from penetrating through the through-hole, further reducing pump noise during water production. This achieves the goal of reducing pump noise without affecting the water flow rate, further improving the user experience. It effectively solves the problems of pump vibration being transmitted to the piping during operation, causing collisions between the piping and the outer casing and generating significant abnormal noise, as well as internal pump noise propagating through the through-hole on the outer casing, making it difficult to control overall vibration and noise levels and negatively impacting the user experience.

[0009] In one alternative implementation, the damping structure includes a damping rubber ring that is detachably mounted within a through-hole.

[0010] Beneficial effects: The shock absorption structure adopts a shock-absorbing rubber ring structure, which has a significant noise reduction effect, and is simple to construct, easy to install, and low in cost.

[0011] In one optional embodiment, the damping rubber ring includes an annular rubber ring body; an annular groove is provided on the outer periphery of the rubber ring body, and the annular groove engages with the circumferential edge of the through hole.

[0012] Beneficial effects: The annular groove in the middle of the shock-absorbing rubber ring can engage with the circumferential edge of the through hole, thus playing a limiting role and effectively preventing the shock-absorbing rubber ring from detaching from the through hole, thereby improving the stability and reliability of the shock-absorbing rubber ring's position.

[0013] In one optional embodiment, the pipeline includes an inlet pipe and an outlet pipe respectively connected to the inlet end and outlet end of the pump; the through hole includes a first through hole and a second through hole respectively corresponding to the inlet pipe and the outlet pipe, and both the first through hole and the second through hole are provided with a buffer and shock absorption structure.

[0014] Beneficial effects: The first through hole corresponds to the water inlet pipe, and the second through hole corresponds to the water outlet pipe. The water inlet pipe and the water outlet pipe of the pump can extend from the first through hole and the second through hole respectively and connect to the external water circuit. Through the buffer and shock absorption structure set in the first through hole and the second through hole respectively, the problem of collision between the water inlet pipe and the water outlet pipe and the outer casing during pump operation can be effectively avoided, thus preventing the generation of large noise.

[0015] In one alternative embodiment, the pump assembly further includes a fixing structure for securing the pump within the noise reduction cavity, the fixing structure comprising:

[0016] Connectors are either welded and fixed to the housing, or integrally formed and mounted on the housing.

[0017] The pump has a connection hole, and the connector or locking component passes through the connection hole. The locking component and the connector are threaded together to lock and fix the pump to the housing.

[0018] Beneficial effects: By using welded or integrally molded connectors to fix the connectors to the outer casing, the connectors and the outer casing become a single unit. This prevents the connectors from colliding with the outer casing when the pump is operating, reducing noise sources. Furthermore, the threaded engagement between the locking component and the connector securely fastens the pump to the outer casing, ensuring a reliable and stable fixation while facilitating easy assembly and disassembly.

[0019] In one alternative embodiment, the connector includes a bolt welded to the housing, and the locking element includes a nut that engages with the bolt's thread.

[0020] Beneficial effects: The connector is made into a whole with the housing by using bolts welded to the housing. When the pump is running, the bolts will not collide with the housing, reducing noise sources. The structure is also simple and the housing is easy to process and form.

[0021] In one alternative embodiment, the connector includes a bolt post integrally formed on the housing, and the locking element includes a bolt threaded into the bolt post.

[0022] Beneficial effects: By adopting a structure in which bolt posts are integrally molded on the outer shell, the connector eliminates the need for assembly steps and improves assembly efficiency.

[0023] In one optional embodiment, the pump has two sets of connection holes on both sides, and the fixing structure has two sets, with the two sets of fixing structures corresponding to the two sets of connection holes.

[0024] Beneficial effects: By setting two sets of connecting holes on both sides of the pump, and correspondingly setting two sets of fixing structures to cooperate with the two sets of connecting holes, the pump can be fixed from both sides, resulting in better, more reliable and stable fixing, and less shaking.

[0025] In one alternative implementation, the pump assembly further includes:

[0026] Noise-reducing pads are placed on the inner wall of the outer shell to enclose and form a noise-reducing cavity.

[0027] Beneficial effects: By setting noise reduction pads on the inner wall of the outer shell, a noise reduction cavity can be formed inside the outer shell. The design of the noise reduction pads can both isolate the noise of the pump operation and absorb the noise of the pump operation.

[0028] In one alternative implementation, the housing includes:

[0029] The shell body has an open side.

[0030] The cover plate is detachably installed and fixed on the open side of the shell body. Connecting flanges are provided on both sides of the open edge of the shell body, and fixing holes for connecting with the cover plate are provided on the connecting flanges.

[0031] The connecting flange includes a vertically arranged flange body and a lug formed by bending the upper end of the flange body away from the cover plate.

[0032] Beneficial effects: The outer casing adopts a detachable structure for the main body and cover plate, facilitating assembly and disassembly. Connecting flanges are provided on both sides of the open edge of the main body, allowing the cover plate to fit snugly against them. Fasteners pass through fixing holes on the cover plate and connecting flanges, ensuring effective connection and fixation between the cover plate and the main body. Furthermore, the hanging lugs formed by the upper end of the connecting flanges bending away from the cover plate allow the pump assembly to be suspended from the side and back of the machine body, or directly from the bottom, providing flexible assembly options and facilitating the integration of the pump assembly with the entire machine.

[0033] Secondly, this utility model also provides a water purifier, including the pump assembly of any of the above embodiments. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is an exploded view of the pump assembly in an embodiment of this utility model;

[0036] Figure 2 This is a front view of the pump assembly after assembly in an embodiment of this utility model;

[0037] Figure 3 This is a side view of the pump assembly after assembly in an embodiment of this utility model;

[0038] Figure 4 This is a rear view of the pump assembly after assembly in an embodiment of this utility model;

[0039] Figure 5 This is a top view of the pump assembly after assembly in an embodiment of this utility model;

[0040] Figure 6 This is a bottom view of the pump assembly after assembly in an embodiment of this utility model;

[0041] Figure 7 This is a schematic diagram of the internal structure of the pump assembly after the cover plate is removed following assembly in this embodiment of the present invention.

[0042] Figure 8 for Figure 7 The front view;

[0043] Figure 9 This is a schematic diagram of the structure of the washer-nut in the embodiment of this utility model;

[0044] Figure 10 This is a schematic diagram of the buffer and shock absorption structure from the top view in an embodiment of this utility model;

[0045] Figure 11 This is a schematic diagram of the buffer and shock absorption structure from the bottom view in an embodiment of this utility model;

[0046] Figure 12 This is an isometric view of the buffer and shock absorption structure in the embodiment of this utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. Outer shell; 100. Through hole; 11. Shell body; 111. Connecting flange; 112. Hanging lug; 12. Cover plate;

[0049] 20. Pump; 200. Connection hole; 201. Pipeline;

[0050] 30. Buffer and shock absorption structure; 31. Annular groove; 32. Guide part; 33. Anti-detachment part;

[0051] 40. Fixed structure; 41. Connecting parts; 42. Locking parts;

[0052] 50. Noise-reducing pad. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0054] Currently, with the gradual improvement of people's living standards, the health of drinking water has received increasing attention, and water purifiers have gradually become one of the important electrical appliances in life. Commercial water purifiers are installed in many commercial locations such as offices, hospitals, schools, and factories. Commercial water purifiers have a much larger flow rate than household water purifiers, better meeting the drinking water needs of multiple people simultaneously. However, this also brings the problem that their noise level is much higher than that of household water purifiers. Due to the inherent working characteristics of the pressure-stabilizing pump, it generates vibration and noise during normal operation, which is the main source of vibration and noise for the entire machine. Because current pressure-stabilizing pumps are limited by their structural design, it is difficult to reduce the vibration and noise of the pump itself. Generally, it is necessary to add external vibration damping and noise reduction structures to control the noise and vibration of the entire machine.

[0055] In related technologies, most water purifiers rely solely on traditional pump base rubber pads and noise reduction boxes for vibration and noise reduction, which have limited effectiveness. Because the pump has an inlet pipe connecting to the external water system, a through-hole needs to be made in the pump casing for the inlet pipe to pass through. Vibrations transmitted by the pump cause the inlet pipe to collide with the casing, generating significant abnormal noise. Furthermore, internal pump noise can also propagate out through the through-hole in the casing, making it difficult to control the overall vibration and noise levels, especially for high-flow pumps.

[0056] The following is combined with Figures 1 to 12 The following describes embodiments of the present invention.

[0057] According to embodiments of the present invention, on the one hand, in conjunction with Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figures 10 to 12 As shown, this utility model provides a pump assembly, including a housing 10, a pump 20, and a buffer and shock-absorbing structure 30. A noise reduction cavity is formed inside the housing 10. The pump 20 is disposed in the noise reduction cavity. The housing 10 is provided with a through hole 100 through which the pipeline 201 of the pump 20 can pass. The buffer and shock-absorbing structure 30 is installed in the through hole 100 to reduce the vibration noise between the pipeline 201 and the housing 10.

[0058] In the above embodiment, by placing the pump 20 inside the noise reduction cavity and installing a buffer and shock-absorbing structure 30 inside the through hole 100 on the outer casing 10 through which the pipeline 201 of the pump 20 passes, the buffer and shock-absorbing structure 30 is positioned between the pipeline 201 and the through hole 100. This prevents the pipeline 201 of the pump 20 from directly colliding with the outer casing 10 when it shakes. The buffer and shock-absorbing structure 30 can buffer, dampen, and isolate the pump 20, reducing noise sources. At the same time, the buffer and shock-absorbing structure 30 can also seal the gap between the pipeline 201 and the through hole 100, effectively preventing noise from entering the outer casing 10. Noise is transmitted through the through hole 100, further reducing the noise of pump 20 when producing water. This achieves the goal of reducing the noise generated by pump 20 when producing water without affecting the water flow rate of pump 20, thereby further improving the user experience. It effectively solves the problems that when pump 20 is in operation, the vibration generated by pump 20 is transmitted to pipe 201, causing pipe 201 to collide with the outer casing 10 and generate large abnormal noise, and that the noise inside pump 20 is transmitted out through the through hole 100 on the outer casing 10, making it difficult to control the vibration and noise of the whole machine to a low level and affecting the user experience.

[0059] Specifically, the through hole 100 can be opened on the top wall or side wall of the housing 10 according to the direction of the pipeline 201. In the attached drawings of this embodiment, the pipeline 201 of the pump 20 is routed upwards and the through hole 100 is opened on the top wall of the housing 10.

[0060] It should be noted that, in this embodiment, pump 20 includes, but is not limited to, water pump, pressure stabilizing pump, air pump, and oil pump. Preferably, in this embodiment, pump 20 is a pressure stabilizing pump.

[0061] In some embodiments, the damping structure 30 includes a damping rubber ring that is detachably mounted within the through hole 100.

[0062] In the above embodiments, the buffer and shock absorption structure 30 adopts a shock-absorbing rubber ring structure, which has a significant noise reduction effect, and is simple to construct, easy to install, and low in cost.

[0063] It should be noted that the buffer and shock absorption structure 30 in this embodiment is not limited to the structure of shock-absorbing rubber rings. It can also adopt structures such as foam gaskets and sponge gaskets, as long as it can ensure that the pipe 201 does not directly contact the through hole 100 and can play a buffering and isolation role in the middle, reduce noise sources, and prevent noise from passing through.

[0064] In some embodiments, the shock-absorbing rubber ring includes an annular rubber ring body; an annular groove 31 is provided on the outer periphery of the rubber ring body, and the annular groove 31 is engaged with the circumferential edge of the through hole 100.

[0065] In the above embodiment, the annular groove 31 provided in the middle of the shock-absorbing rubber ring can be engaged with the circumferential edge of the through hole 100, thereby playing a limiting role and effectively preventing the shock-absorbing rubber ring from detaching from the through hole 100, thus improving the stability and reliability of the position of the shock-absorbing rubber ring.

[0066] Specifically, the shock-absorbing rubber ring has a through hole in the middle for the conduit 201 to extend out. The shock-absorbing rubber ring is a rubber part and includes a guide part 32 located below the annular groove 31. Along the direction in which the shock-absorbing rubber ring is inserted into the through hole 100, the cross-sectional area of ​​the guide part 32 gradually decreases, thereby playing a guiding role, making it convenient for the shock-absorbing washer to be installed into the through hole 100, and improving the assembly efficiency of the shock-absorbing rubber ring.

[0067] Optionally, the guide portion 32 is conical or frustum-shaped.

[0068] Furthermore, combined Figure 1 , Figures 10 to 12 As shown, the shock-absorbing rubber ring includes an anti-detachment part 33 located above the annular groove 31. The anti-detachment part 33 is disc-shaped, and the outer diameter of the anti-detachment part 33 is larger than the diameter of the through hole 100. During assembly, the guide part 32 passes through the through hole 100, the annular groove 31 is engaged with the edge of the through hole 100, and the anti-detachment part 33 is limited above the through hole 100, so that the shock-absorbing washer is stably engaged and limited on the through hole 100 and is not easy to fall off.

[0069] In some embodiments, the pipeline 201 includes an inlet pipe and an outlet pipe respectively connected to the inlet end and the outlet end of the pump 20; the through hole 100 includes a first through hole and a second through hole respectively corresponding to the inlet pipe and the outlet pipe, and a buffer and shock absorption structure 30 is provided in both the first through hole and the second through hole.

[0070] In the above embodiment, the first through hole corresponds to the water inlet pipe and the second through hole corresponds to the water outlet pipe. The water inlet pipe and the water outlet pipe of the pump 20 can extend from the first through hole and the second through hole respectively and connect to the external water passage. The buffer and shock absorption structure 30 provided in the first through hole and the second through hole respectively can effectively prevent the water inlet pipe and the water outlet pipe from colliding with the outer casing 10 when the pump 20 is working, thus avoiding the problem of generating a lot of noise.

[0071] It should be noted that the accompanying drawings of this embodiment illustrate the pipe 201 as including an inlet pipe and an outlet pipe. In other alternative embodiments, the pipe 201 may also include a drain pipe, which is not limited in this embodiment.

[0072] In some embodiments, combined with Figure 1 , Figures 7 to 9 As shown, the pump assembly also includes a fixing structure 40, which is used to fix the pump 20 in the noise reduction cavity. The fixing structure 40 includes a connector 41 and a locking member 42. The connector 41 is welded and fixed to the housing 10, or the connector 41 is integrally formed on the housing 10. The pump 20 is provided with a connection hole 200, and the connector 41 or the locking member 42 passes through the connection hole 200. The locking member 42 and the connector 41 are threaded together to lock the pump 20 onto the housing 10.

[0073] In the above embodiments, the connector 41 is welded to the outer casing 10 or is integrally formed, making the connector 41 and the outer casing 10 a single unit. This prevents the connector 41 from colliding with the outer casing 10 when the pump 20 operates, reducing noise sources. Furthermore, the pump 20 is securely locked to the outer casing 10 by the threaded engagement between the locking member 42 and the connector 41, ensuring a reliable and stable fixation while facilitating easy assembly and disassembly.

[0074] Specifically, a connecting lug is fixedly provided on the side of the pump 20, and a connecting hole 200 is provided on the connecting lug. During assembly, the connecting piece 41 passes through the connecting hole 200 on the connecting lug and connects with the locking piece 42, or the locking piece 42 passes through the connecting hole 200 on the connecting lug and connects with the connecting piece 41.

[0075] In some more specific embodiments, the connector 41 includes a bolt welded to the housing 10, and the locking member 42 includes a nut that engages with the thread of the bolt.

[0076] In the above embodiment, the connector 41 is made into a whole with the housing 10 by using bolts welded to the housing 10. When the pump 20 is activated, the bolts will not collide with the housing 10, reducing the noise source. The structure is simple and the housing 10 is easy to process and form.

[0077] During assembly, mounting holes can be made on the outer casing 10 first, then bolts can be inserted into the mounting holes and welded in place. The outer circumference of the bolt end is threaded, and the bolt end passes through the connection hole 200 of the pump 20. Then, the pump 20 can be locked in place by tightening the nut.

[0078] In some alternative embodiments, connector 41 includes a bolt post integrally formed on housing 10, and locking member 42 includes a bolt threaded into the bolt post.

[0079] In the above embodiments, the connector 41 adopts a structure in which bolt posts are integrally molded on the outer shell 10. The bolt posts and the outer shell 10 are integrally injection molded, which can eliminate the assembly steps of the two and improve assembly efficiency.

[0080] Specifically, the bolt post has internal threads, and the bolt has external threads. During assembly, the bolt is first inserted into the connection hole 200 of the pump 20, and then threaded into the bolt post. The pump 20 is locked and fixed by tightening the bolt.

[0081] In some embodiments, the locking element 42 is a washered nut or a washered bolt.

[0082] In the above embodiments, by using a wasted nut or wasted bolt, the contact area between the locking member 42 and the surface of the pump 20 can be increased, thereby increasing the fastening force and improving the pump 20's ability to resist vibration. It has a good anti-vibration and anti-loosening effect, which not only improves the firmness and reliability of the pump 20 connection and prevents the pump 20 from moving arbitrarily inside the housing 10 during operation, but also reduces the noise generated by vibration, further improving the user experience.

[0083] Of course, in other alternative embodiments, the locking member 42 can also be a common nut and a common bolt, and a gasket can be provided between the locking member 42 and the pump 20.

[0084] Preferably, in this embodiment, combined with Figure 1 , Figure 7 , Figure 9 As shown, the locking component 42 uses a washered nut, which is more secure and has a greater tensile force than the combination of a regular nut and washer. It also reduces the number of parts and improves assembly efficiency.

[0085] In this application, the locking component 42 adopts a structure of a washered nut or washered bolt, or a regular nut + washer or a regular bolt + washer, which realizes the soft connection and fixation between the pump 20 and the fixed structure 40, so that the pump 20 will not directly collide with the fixed structure 40 when it operates, thus generating additional noise and further reducing the noise of the pump 20 when it is working.

[0086] In some embodiments, the pump 20 is provided with two sets of connection holes 200 on both sides, and the fixing structure 40 has two sets, with the two sets of fixing structures 40 corresponding to the two sets of connection holes 200.

[0087] In the above embodiment, by providing two sets of connecting holes 200 on both sides of the pump 20, and correspondingly providing two sets of fixing structures 40 to cooperate with the two sets of connecting holes 200, the pump 20 can be fixed from both sides, resulting in a better, more reliable and stable fixing effect, and less wobbling.

[0088] Preferably, the two sets of connecting holes 200 are respectively arranged on the left and right sides of the pump 20 along the axial direction of the pump body, and each set of connecting holes 200 includes two connecting holes 200 arranged vertically and vertically. Each set of fixing structure 40 includes two sets of connecting parts 41 and locking parts 42. This design can further improve the stability and reliability of the pump 20 structure.

[0089] In some embodiments, a plurality of pumps 20 are disposed within the housing 10, the number of pumps 20 corresponding to the number of fixed structures 40. Preferably, as Figure 1 , Figure 2 As shown, two pumps 20 are installed inside the outer casing 10, resulting in a larger water flow rate to meet the needs of high-flow applications. Of course, the outer casing 10 can also be equipped with more than two pumps; this embodiment does not limit the number of pumps 20.

[0090] In some embodiments, such as Figure 1 , Figure 7 As shown, the pump assembly also includes a noise reduction pad 50, which is disposed on the inner wall of the housing 10 to enclose and form a noise reduction cavity.

[0091] In the above embodiment, by providing a noise reduction pad 50 on the inner wall of the outer shell 10, a noise reduction cavity can be formed within the outer shell 10. The design of the noise reduction pad 50 can both isolate the noise of the pump 20 and absorb the noise of the pump 20.

[0092] Alternatively, the noise-reducing pad 50 can be made of materials such as foam or sponge.

[0093] Preferably, in this embodiment, the noise reduction pad 50 is a composite sponge. The composite sponge is pasted on the inner wall of the outer shell 10, so that the inside of the outer shell 10 forms a sealed noise reduction space, which can both isolate the noise of the pump 20 and absorb the noise of the pump 20.

[0094] In some embodiments, such as Figures 1 to 8 As shown, the outer shell 10 includes a shell body 11 and a cover plate 12. One side of the shell body 11 is open. The cover plate 12 is detachably installed and fixed to the open side of the shell body 11. Connecting flanges 111 are respectively provided on both sides of the open side of the shell body 11. The connecting flanges 111 are provided with fixing holes for connecting with the cover plate 12. The connecting flanges 111 include a vertically arranged flange body and a lug 112 formed by bending the upper end of the flange body away from the cover plate 12.

[0095] In the above embodiment, the outer casing 10 adopts a detachable structure consisting of a main casing 11 and a cover plate 12, facilitating assembly and disassembly. The cover plate 12 can be fitted onto connecting flanges 111 provided on both sides of the open edge of the main casing 11. Fixing members are then passed through fixing holes on the cover plate 12 and connecting flanges 111, achieving effective connection and fixation between the cover plate 12 and the main casing 11. Furthermore, the hanging lugs 112 formed by bending the upper end of the connecting flanges 111 away from the cover plate 12 allow the pump assembly to be suspended on the side and back of the machine body, or directly on the bottom of the machine, providing flexibility in assembly and facilitating the integration of the pump assembly with the entire machine.

[0096] Specifically, the shell body 11 has an open side, and the two sides of the open side bend outward to form connecting flanges 111. Multiple fixing holes are spaced apart along the length of the connecting flanges 111, and multiple mounting holes are correspondingly provided on both sides of the cover plate 12. Multiple screws can be passed through the mounting holes and fixing holes in sequence to connect and fix the cover plate 12 to the shell body 11. The upper edge of the connecting flanges 111 bends away from the cover plate 12 to form a hanging lug 112, facilitating the suspension and installation of the pump assembly.

[0097] Furthermore, in this embodiment, the shell body 11 includes a top plate, a bottom plate, and three side plates connected to the three sides of the top plate and the bottom plate. The noise reduction pad 50 includes six composite sponges, which are respectively glued to the top plate, the bottom plate, the three side plates, and the inner wall of the cover plate 12 with adhesive. When the shell body 11 and the cover plate 12 are assembled, the shell body 11 and the cover plate 12 form a closed space structure, which isolates the noise generated by the pump 20. The composite sponges glued inside the shell body 11 and the cover plate 12 also form a closed noise reduction space, which not only isolates the noise generated by the pump 20, but also absorbs the noise generated by the pump 20.

[0098] The pump assembly provided in this embodiment effectively solves the problem of high noise in the prior art through a quadruple noise reduction design. The specific design is as follows:

[0099] 1. In this application, a shock-absorbing rubber ring is provided in the through hole 100 on the outer casing 10 through which the pipeline 201 passes. The shock-absorbing rubber ring cooperates with the through hole 100 on the top of the outer casing 10 through the annular groove 31 in the middle, thereby achieving a limiting function. When the pump 20 is activated, the pipeline 201 of the pump 20 will not directly collide with the outer casing 10 when it shakes, which plays a role in buffering and isolation, reducing the noise source. In addition, the shock-absorbing rubber ring seals the gap between the pipeline 201 and the through hole 100, which can effectively prevent the noise inside the outer casing 10 from passing through.

[0100] 2. This application welds the bolts used to fix the pump 20 to the housing 10, making it an integral part of the housing 10. When the pump 20 is in operation, the bolts will not collide with the housing 10, thus reducing the noise source.

[0101] 3. The locking component 42 in this application uses a washer nut. Compared with a regular nut, the washer nut has a larger contact area with the surface of the pump 20, thereby increasing the tightening force and improving the pump 20's resistance to vibration, providing better shock absorption and anti-loosening effects. By using the washer nut and bolts to fix the pump 20 to the housing 10, the problem of the pump 20 moving arbitrarily inside the housing 10 and causing excessive noise during operation can be effectively prevented.

[0102] 4. In this application, the composite sponge pasted on the inner wall of the outer shell 10 forms a closed space structure when the shell body 11 and the cover plate 12 are assembled. This serves to isolate the noise of the pump 20. At the same time, the sponge pasted inside the shell body 11 and the cover plate 12 also forms a closed noise reduction space, which serves to both isolate the noise of the pump 20 and absorb the noise of the pump 20.

[0103] According to an embodiment of the present invention, in another aspect, a water purifier is provided, including the pump assembly of any of the above embodiments.

[0104] Optionally, the water purifier can be a household water purifier or a commercial water purifier. Preferably, the water purifier in this embodiment is a commercial water purifier.

[0105] The water purifier provided in this embodiment uses the aforementioned pump assembly to fix the pump 20 within a sealed space. This sealed space is lined with a special composite sponge, which both isolates and absorbs the noise from the pump 20's operation. Furthermore, the fixing structure 40 between the pump 20 and the outer casing 10 uses a connector 41 integrally formed with the casing 10, and the locking member 42 employs a structure with a washer nut or washer bolt, preventing direct collision between the pump 20 and the fixing structure 40 during operation and thus avoiding additional noise. Additionally, shock-absorbing rubber rings are used at the inlet and outlet pipe positions on the casing 10 to prevent vibrations transmitted by the pump 20 from colliding with the pipe 201 and generating significant noise. By employing the aforementioned pump assembly, the water purifier provided in this application reduces the noise generated during water purification without affecting the water production flow rate, further enhancing the user experience.

[0106] Moreover, the pump assembly provided in this application has a compact structure, which can maximize the use of the internal space of the water purifier. The fixing method of the two sides of the outer casing 10 can be adjusted according to the actual assembly requirements. The hanging ears 112 can be added to suspend the machine on the side and back, or it can be directly installed on the bottom of the machine, making the assembly method flexible.

[0107] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. A pump assembly, characterized in that, include: The outer shell (10) has a noise reduction cavity formed inside it; A pump (20) is installed inside the noise reduction cavity. The outer shell (10) is provided with a through hole (100) through which the pipeline (201) of the pump (20) can pass. The pump (20) is a pressure stabilizing pump. A buffer and shock-absorbing structure (30) is installed inside the through hole (100) to reduce vibration noise between the pipe (201) and the housing (10).

2. The pump assembly according to claim 1, characterized in that, The buffer and shock-absorbing structure (30) includes a shock-absorbing rubber ring that is detachably installed in the through hole (100).

3. The pump assembly according to claim 2, characterized in that, The shock-absorbing rubber ring includes an annular rubber ring body; The outer periphery of the rubber ring body is provided with an annular groove (31), which is engaged with the circumferential edge of the through hole (100).

4. The pump assembly according to any one of claims 1 to 3, characterized in that, The pipeline (201) includes an inlet pipe and an outlet pipe respectively connected to the inlet end and the outlet end of the pump (20); The through hole (100) includes a first through hole and a second through hole respectively corresponding to the water inlet pipe and the water outlet pipe, and the buffer and shock absorption structure (30) is provided in both the first through hole and the second through hole.

5. The pump assembly according to any one of claims 1 to 3, characterized in that, The pump assembly further includes a fixing structure (40) for fixing the pump (20) within the noise reduction cavity, the fixing structure (40) comprising: Connector (41), wherein the connector (41) is welded and fixed to the outer shell (10), or the connector (41) is integrally formed and disposed on the outer shell (10); The pump (20) is provided with a connecting hole (200), and the connecting member (41) or the locking member (42) passes through the connecting hole (200). The locking member (42) and the connecting member (41) are threaded together to lock the pump (20) onto the housing (10).

6. The pump assembly according to claim 5, characterized in that, The connector (41) includes a bolt welded to the housing (10), and the locking member (42) includes a nut that is threadedly engaged with the bolt; Alternatively, the connector (41) may include a bolt post integrally formed on the housing (10), and the locking member (42) may include a bolt threaded into the bolt post.

7. The pump assembly according to claim 5, characterized in that, The pump (20) has two sets of connecting holes (200) on both sides, and the fixing structure (40) has two sets, with the two sets of fixing structures (40) corresponding to the two sets of connecting holes (200).

8. The pump assembly according to any one of claims 1 to 3, characterized in that, The pump assembly also includes: A noise reduction pad (50) is disposed on the inner wall of the outer shell (10) to enclose and form the noise reduction cavity.

9. The pump assembly according to any one of claims 1 to 3, characterized in that, The outer casing (10) includes: The shell body (11) has an open side; The cover plate (12) is detachably installed and fixed on the open side of the shell body (11). The two sides of the open side of the shell body (11) are respectively provided with connecting flanges (111). The connecting flanges (111) are provided with fixing holes for connecting with the cover plate (12). The connecting flange (111) includes a flange body arranged vertically and a hanging ear (112) formed by bending the upper end of the flange body away from the cover plate (12).

10. A water purifier, characterized in that, The pump assembly includes any one of claims 1 to 9.

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