Booster pump assembly and water purifier

Abstract

The utility model discloses a booster pump assembly and a water purifier, and belongs to the technical field of water purification equipment, the booster pump assembly comprises a protective cover, a booster pump and a vibration reduction assembly, the protective cover comprises a shell and a mounting seat, the shell is provided with a containing cavity, and the mounting seat is arranged in the containing cavity; the booster pump is arranged in the containing cavity and comprises a pump body and a pump support connected with the pump body. The vibration reduction assembly comprises a plurality of vibration reduction pads and vibration reduction springs, each vibration reduction pad is provided with a first end and a second end, the first end is connected with the pump support, the second end is connected with the installation base, and the vibration reduction springs are arranged on the outer sides of the vibration reduction pads in a sleeving mode and abut against the position between the pump support and the installation base. The shield covers the booster pump, noise conduction is blocked, and outward transmission of vibration generated when the booster pump works can be weakened; the damping pad is matched with the damping spring, double damping is achieved, vibration is prevented from being transmitted to the mounting base, then the loudness of noise is reduced, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a booster pump assembly and a water purifier. Background Art

[0002] The booster pump within a water purifier is a critical component, and its operating noise and vibration are the primary source of overall noise and vibration within the purifier. The booster pump is directly connected to the purifier via screws. When the booster pump is operating, resonance occurs between the pump and the purifier, exacerbating the noise and vibration issues.

[0003] To reduce the noise and vibration of the booster pump, the most common practice is to install rubber pads on the booster pump mounting bracket. Rubber pads can provide a certain degree of vibration reduction, but they have a low pressure bearing capacity and are prone to deformation and even damage, which reduces the vibration reduction performance. Utility Model Content

[0004] The purpose of the utility model is to provide a booster pump assembly and a water purifier to solve the technical problem in the prior art that the booster pump causes large noise and vibration during operation.

[0005] As conceived above, the technical solution adopted by the utility model is:

[0006] A booster pump assembly, comprising:

[0007] The shield comprises a shell and a mounting seat, wherein the shell has a receiving cavity and the mounting seat is arranged in the receiving cavity;

[0008] a booster pump disposed in the accommodating cavity, the booster pump comprising a pump body and a pump bracket connected to the pump body;

[0009] The vibration damping assembly includes a plurality of vibration damping pads and a vibration damping spring, wherein the vibration damping pad has a first end and a second end, the first end is connected to the pump bracket, and the second end is connected to the mounting seat, and the vibration damping spring is sleeved on the outside of the vibration damping pad and abuts between the pump bracket and the mounting seat.

[0010] Preferably, the vibration damping pad is divided into at least two vibration damping parts between the first end and the second end, each vibration damping part has a different hardness, and the hardness of each vibration damping part decreases successively from the first end to the second end.

[0011] Preferably, the vibration damping pad includes three vibration damping parts connected in sequence from the first end to the second end, namely the first vibration damping part, the second vibration damping part and the third vibration damping part. The diameter of the first vibration damping part is larger than the diameter of the second vibration damping part, the diameter of the third vibration damping part is larger than the diameter of the second vibration damping part, and the second vibration damping part is clamped with the pump bracket.

[0012] Preferably, a clamping hole is provided on the pump bracket, the second vibration damping part is passed through the clamping hole, the first vibration damping part abuts the pump bracket and is located at one end of the clamping hole, and the third vibration damping part abuts the pump bracket and is located at the other end of the clamping hole.

[0013] Preferably, a limiting groove is provided on the mounting seat, and an end of the third vibration damping part away from the second vibration damping part is inserted into the limiting groove.

[0014] Preferably, an accommodating channel is formed inside the vibration damping pad, and the accommodating channel passes through the vibration damping pad from the first end to the second end. The mounting seat and the vibration damping pad are connected by a first locking member, and the first locking member is passed through the accommodating channel.

[0015] Preferably, a vibration-damping groove is provided on the inner wall of the accommodating channel, and the vibration-damping groove passes through the vibration-damping pad in a direction from the first end to the second end.

[0016] Preferably, the diameter of the vibration-damping spring gradually increases from the first end to the second end; and / or the stiffness of the vibration-damping spring gradually increases from the first end to the second end.

[0017] Preferably, the housing includes a first shell and a second shell that are detachably connected, the first shell and the second shell are engaged with each other to form the accommodating cavity, the mounting seat is arranged at the bottom of the first shell, and the booster pump is spaced apart from the second shell.

[0018] A water purifier comprises a casing, a filter element arranged in the casing, and the booster pump assembly as described above.

[0019] Beneficial effects of the utility model:

[0020] The booster pump assembly proposed in the present invention comprises a protective cover comprising a housing and a mounting seat. The housing has a receiving cavity, the mounting seat is disposed within the receiving cavity, and the booster pump is disposed within the receiving cavity. The protective cover covers the booster pump, thereby blocking noise transmission and reducing the transmission of vibration generated by the booster pump during operation. The booster pump comprises a pump body and a pump bracket connected to the pump body. A vibration-damping pad has a first end and a second end, the first end being connected to the pump bracket and the second end being connected to the mounting seat. A vibration-damping spring is sleeved on the outside of the vibration-damping pad and abuts between the pump bracket and the mounting seat. Vibration of the pump body is transmitted to the vibration-damping pad and the vibration-damping spring via the pump bracket. The vibration-damping pad and the vibration-damping spring cooperate to achieve dual vibration reduction, preventing vibration from being transmitted to the mounting seat, thereby reducing noise loudness and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a booster pump assembly provided in Example 1 of the present utility model;

[0022] Figure 2 This is a cross-sectional view of the booster pump assembly provided in Example 1 of the present utility model;

[0023] Figure 3 yes Figure 2 A magnified view of point A;

[0024] Figure 4 This is a front view of the booster pump assembly provided in the first embodiment of the present invention with the second housing omitted;

[0025] Figure 5 This is a structural diagram of the first housing and the mounting base provided in the first embodiment of the present invention;

[0026] Figure 6 This is a partial structural diagram of the booster pump assembly provided in Example 1 of the present utility model;

[0027] Figure 7 This is a structural diagram of a vibration damping pad provided in Example 1 of the present utility model;

[0028] Figure 8 yes Figure 7 A cross-sectional view of the provided vibration damping pad;

[0029] Figure 9 This is a schematic structural diagram of another vibration damping pad provided in Example 1 of the present utility model;

[0030] Figure 10 This is a front view of the booster pump assembly provided in the second embodiment of the present invention with the second housing omitted;

[0031] Figure 11 This is a partial structural cross-sectional view of the booster pump assembly provided in the second embodiment of the present utility model;

[0032] Figure 12 yes Figure 11 Enlarged view of point B;

[0033] Figure 13 This is a schematic structural diagram of the vibration damping pad provided in the second embodiment of the present invention;

[0034] Figure 14 This is a cross-sectional view of the vibration damping pad provided in Example 2 of the present utility model;

[0035] Figure 15 This is a schematic structural diagram of a water purifier provided in the third embodiment of the present invention;

[0036] Figure 16 It is a cross-sectional view of the water purifier provided in the third embodiment of the present invention.

[0037] In the picture:

[0038] 10. Shield; 11. Housing; 111. Accommodating cavity; 112. First housing; 113. Second housing; 12. Mounting seat; 13. Mounting hole;

[0039] 20. Booster pump; 21. Pump body; 22. Pump bracket; 221. Clamping hole; 23. Second locking member;

[0040] 30. Vibration-damping pad; 301. First end; 302. Second end; 303. Accommodating channel; 304. Vibration-damping groove; 31. First vibration-damping portion; 32. Second vibration-damping portion; 33. Third vibration-damping portion; 34. Fourth vibration-damping portion; 35. Fifth vibration-damping portion;

[0041] 40. Vibration damping spring;

[0042] 100. Casing. DETAILED DESCRIPTION

[0043] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] Example 1

[0048] See also Figures 1 to 9 This embodiment provides a booster pump assembly, including a shield 10, a booster pump 20 and a vibration damping assembly, the shield 10 includes a shell 11 and a mounting seat 12, the shell 11 has a accommodating cavity 111, and the mounting seat 12 is arranged in the accommodating cavity 111; the booster pump 20 is arranged in the accommodating cavity 111, the booster pump 20 includes a pump body 21 and a pump bracket 22 connected to the pump body 21; the vibration damping assembly includes a plurality of vibration damping pads 30 and a vibration damping spring 40, the vibration damping pad 30 has a first end 301 and a second end 302, the first end 301 is connected to the pump bracket 22, and the second end 302 is connected to the mounting seat 12, the vibration damping spring 40 is sleeved on the outside of the vibration damping pad 30 and abuts between the pump bracket 22 and the mounting seat 12.

[0049] The booster pump 20 is covered by the protective cover 10, which blocks the noise conduction and can reduce the vibration generated by the booster pump 20 when it is working and transmits it outward; the vibration of the pump body 21 is transmitted to the vibration-damping pad 30 and the vibration-damping spring 40 through the pump bracket 22. The vibration-damping pad 30 and the vibration-damping spring 40 cooperate to achieve double vibration reduction, avoiding the vibration from being transmitted to the mounting seat 12, thereby reducing the loudness of the noise and improving the user experience.

[0050] Because the damping spring 40 is sleeved around the outside of the damping pad 30 and abuts between the pump bracket 22 and the mounting base 12, it effectively protects the damping pad 30. It not only shares the pressure on the damping pad 30, but also limits the circumferential position of the damping pad 30 to prevent distortion or deflection of the damping pad 30. The damping spring 40 may be sleeved around each damping pad 30, or may be sleeved around some of the damping pads 30.

[0051] Since the shock-absorbing spring 40 abuts between the pump bracket 22 and the mounting seat 12, in order to limit the shock-absorbing spring 40, mounting grooves can be provided on both the pump bracket 22 and the mounting seat 12, and both ends of the shock-absorbing spring 40 are inserted into the mounting grooves to prevent the shock-absorbing spring 40 from deflecting under pressure.

[0052] The vibration-damping spring 40 can be a constant-diameter spring or a variable-diameter spring. It can be a constant-rigidity spring or a variable-rigidity spring. For example, the diameter of the vibration-damping spring 40 gradually increases from the first end 301 to the second end 302. The end with the larger diameter of the vibration-damping spring 40 abuts the mounting seat 12, while the end with the smaller diameter of the vibration-damping spring 40 abuts the pump bracket 22, providing more stable support for the pump bracket 22. For example, the stiffness of the vibration-damping spring 40 gradually increases from the first end 301 to the second end 302. The end with the larger diameter of the vibration-damping spring 40 abuts the mounting seat 12, providing good load-bearing and support for the booster pump 20; the end with the smaller diameter of the vibration-damping spring 40 abuts the pump bracket 22, quickly absorbing and reducing the vibration energy transmitted from the booster pump 20 to the mounting seat 12.

[0053] The vibration damping pad 30 can be made of rubber or existing composite materials. Due to its inherent elasticity, the vibration damping pad 30 acts as a damper, absorbing vibration energy and reducing vibration. It also acts as an isolation device, separating the booster pump 20 from other components to prevent excessive noise from direct contact and collision.

[0054] The vibration damping pad 30 can be set to a uniform hardness or a variable hardness. If the vibration damping pad 30 is too soft, it is prone to local distortion and deformation during installation, which can easily lead to breakage and reduce the bearing capacity of the vibration damping pad 30. If the vibration damping pad 30 is too hard, the vibration damping pad 30's support and stabilization effect on the boost pump 20 is enhanced, but the high hardness will reduce the vibration damping performance of the vibration damping pad 30. Therefore, in this embodiment, the vibration damping pad 30 is divided into at least two vibration damping parts between the first end 301 and the second end 302, each vibration damping part having a different hardness, and the hardness of each vibration damping part decreases from the first end 301 to the second end 302.

[0055] With the help of the first end 301, the vibration damping pad 30 can be stably fastened to the pump bracket 22 and provide good load bearing and support for the booster pump 20; with the help of the second end 302, the vibration damping pad 30 can absorb and reduce the vibration energy transmitted from the booster pump 20 to the mounting base 12, thereby reducing the loudness of the noise and improving the user experience.

[0056] The vibration damping pad 30 can be divided into 1, 2, ..., n vibration damping parts between the first end 301 and the second end 302. Correspondingly, each vibration damping part corresponds to a hardness value H1, H2, ..., Hn, where H1 to Hn decrease in order, and n is a positive integer greater than 2. The hardness of each vibration damping part can decrease in order in an arithmetic progression.

[0057] In some embodiments, the vibration damping pad 30 is divided into two vibration damping parts between the first end 301 and the second end 302, that is, the vibration damping pad 30 includes two vibration damping parts connected in sequence from the first end 301 to the second end 302, namely the first vibration damping part 31 and the second vibration damping part 32, the first vibration damping part 31 is connected to the pump bracket 22, and the second vibration damping part 32 is connected to the mounting seat 12, and the hardness of the first vibration damping part 31 is greater than the hardness of the second vibration damping part 32.

[0058] In some embodiments, the vibration damping pad 30 is divided into three vibration damping parts between the first end 301 and the second end 302, that is, the vibration damping pad 30 includes three vibration damping parts connected in sequence from the first end 301 to the second end 302, namely the first vibration damping part 31, the second vibration damping part 32 and the third vibration damping part 33, the first vibration damping part 31 is connected to the pump bracket 22, the third vibration damping part 33 is connected to the mounting seat 12, the hardness of the first vibration damping part 31 is greater than the hardness of the second vibration damping part 32, and the hardness of the second vibration damping part 32 is greater than the hardness of the third vibration damping part 33.

[0059] The vibration damping pad 30 and the pump bracket 22 can be connected by screws or clamping, and the vibration damping pad 30 and the mounting base 12 can be abutted, clamped, or bolted. In this embodiment, the vibration damping pad 30 is clamped to the pump bracket 22, and the vibration damping pad 30 abuts the mounting base 12 and is connected by a first locking member. The first locking member can be a bolt.

[0060] In this embodiment, the vibration damping pad 30 includes three vibration damping parts connected in sequence from the first end 301 to the second end 302, namely the first vibration damping part 31, the second vibration damping part 32 and the third vibration damping part 33. The diameter of the first vibration damping part 31 is larger than the diameter of the second vibration damping part 32, the diameter of the third vibration damping part 33 is larger than the diameter of the second vibration damping part 32, and the second vibration damping part 32 is clamped with the pump bracket 22.

[0061] By configuring the diameter of the first vibration damper 31 to be larger than that of the second vibration damper 32, and the diameter of the third vibration damper 33 to be larger than that of the second vibration damper 32, the second vibration damper 32 is facilitated to engage with the pump bracket 22. Specifically, a locking hole 221 is defined in the pump bracket 22, through which the second vibration damper 32 is inserted. The first vibration damper 31 abuts the pump bracket 22 at one end of the locking hole 221, while the third vibration damper 33 abuts the pump bracket 22 at the other end of the locking hole 221. Both the first vibration damper 31 and the third vibration damper 33 act as position limiters, ensuring that the second vibration damper 32 is stably positioned within the locking hole 221. When the vibration damper 30 is installed on the pump bracket 22, the elasticity of the vibration damper 30 can be utilized to secure the vibration damper 30 within the locking hole 221.

[0062] For example, the hardness of the first vibration damping portion 31 is 80HA, the hardness of the second vibration damping portion 32 is 65HA, and the hardness of the third vibration damping portion 33 is 40HA. The hardness of the vibration damping pad 30 is measured in Shore hardness (HA). When the boost pump 20 is operating, the first vibration damping portion 31 is not easily damaged by the mechanical vibration of the boost pump 20, thereby enabling the vibration damping pad 30 to provide good fixed support for the boost pump 20. In contrast, the second vibration damping portion 32 and the third vibration damping portion 33 are easily elastically deformed when the boost pump 20 vibrates mechanically, thereby absorbing the vibration energy from the boost pump 20, reducing the amplitude of the mechanical vibration transmitted from the boost pump 20 to the mounting base 12, and achieving the effect of reducing vibration and noise.

[0063] The third vibration damping portion 33 abuts against the mounting seat 12 and is locked by the first locking member. In order to ensure a stable connection between the vibration damping pad 30 and the mounting seat 12, a limiting groove is provided on the mounting seat 12, and the end of the third vibration damping portion 33 away from the second vibration damping portion 32 is inserted into the limiting groove.

[0064] An accommodating channel 303 is formed inside the vibration damping pad 30 , and the accommodating channel 303 passes through the vibration damping pad 30 from the first end 301 to the second end 302 . The mounting seat 12 and the vibration damping pad 30 are connected by a first locking member, and the first locking member is disposed in the accommodating channel 303 .

[0065] The accommodating channel 303 can be in the shape of a cylinder with a constant diameter or a stepped cylinder. Figure 8 As shown, the accommodating channel 303 includes a first channel and a second channel that are sequentially connected from the first end 301 to the second end 302 , and the diameter of the first channel is smaller than the diameter of the second channel.

[0066] When the first locking member is inserted into the accommodating channel 303, in order to prevent the vibration-damping pad 30 from shaking relative to the first locking member, the inner diameter of the accommodating channel 303 is usually set to be equal to the outer diameter of the first locking member, which will cause the vibration of the vibration-damping pad 30 to be transmitted to the first locking member. Figure 9As shown, a vibration-damping groove 304 is defined on the inner wall of the accommodating channel 303. The groove 304 extends through the vibration-damping pad 30 from the first end 301 to the second end 302. The provision of the vibration-damping groove 304 reduces the contact area between the inner wall of the accommodating channel 303 and the first locking member, thereby reducing vibration transmission. Furthermore, the vibration-damping pad 30 has ample radial deformation space, providing it with a certain degree of energy absorption and vibration reduction capabilities in the radial direction.

[0067] When the accommodating channel 303 is in a stepped cylindrical shape, the vibration-damping groove 304 is disposed at a position with a minimum inner diameter of the accommodating channel 303. The cross section of the vibration-damping groove 304 may be rectangular, T-shaped, fan-shaped, or other shapes.

[0068] The housing 11 is provided with a mounting hole 13, which extends through the mounting base 12 and communicates with the accommodating passage 303. A first locking member is disposed through the mounting hole 13. During assembly, the vibration damping pad 30 is secured to the pump bracket 22. The accommodating passage 303 of the vibration damping pad 30 is aligned with the mounting hole 13 on the shield 10, and a bolt is inserted through the mounting base 12. The bolt's head rests on the mounting base 12, and the bolt's shaft passes through the mounting hole 13 and the accommodating passage 303, where it is secured with a nut.

[0069] In this embodiment, four vibration-damping pads 30 are provided between the pump support 22 and the mounting base 12 to balance the force on the pump support 22. The mounting base 12 includes four seat bodies spaced apart, and the seat bodies may be cylindrical.

[0070] The housing 11 includes a detachably connected first shell 112 and a second shell 113. The first shell 112 and the second shell 113 engage with each other to form a receiving chamber 111. The mounting base 12 is disposed at the bottom of the first shell 112, and the booster pump 20 is spaced apart from the second shell 113. The mounting base 12 and the first shell 112 are detachably connected or integrally formed. The first shell 112 and the second shell 113 are connected by a snap or locking member.

[0071] The shield 10 can be made of soft plastic such as styrofoam to reduce resonance. A sound insulation layer is provided on the inner wall of the accommodating chamber 111. By providing the sound insulation layer, the transmission of noise generated by the vibration of the pump body 21 can be blocked to achieve better sound insulation effect.

[0072] The pump body 21 and pump bracket 22 are connected by a second locking member 23. A vibration-damping layer is sandwiched between the pump body 21 and the pump bracket 22. This layer, in conjunction with the vibration-damping pad 30, provides dual vibration reduction, further enhancing the vibration reduction effect. The vibration-damping layer can be made of rubber.

[0073] The booster pump 20 further includes a water inlet interface and a water outlet interface connected to the pump body 21 . A relief hole is provided on the housing 11 , and both the water inlet interface and the water outlet interface extend from the relief hole.

[0074] Example 2

[0075] Figures 10 to 14 A second embodiment is shown, wherein components identical or corresponding to those in the first embodiment are denoted by the corresponding reference numerals. For simplicity, only the differences between the second embodiment and the first embodiment will be described. The differences are that the vibration damping pad 30 further includes a fourth vibration damping portion 34 and a fifth vibration damping portion 35. The fourth vibration damping portion 34 is connected to the third vibration damping portion 33, and the fifth vibration damping portion 35 is connected to the fourth vibration damping portion 34. The diameter of the third vibration damping portion 33 is larger than that of the fourth vibration damping portion 34, and the diameter of the fifth vibration damping portion 35 is larger than that of the fourth vibration damping portion 34. The fifth vibration damping portion 35 abuts against the mounting seat 12.

[0076] The mounting base 12 and the vibration damping pad 30 are connected via a first locking member, which is disposed through the mounting hole 13 and the accommodating channel 303. For example, the accommodating channel 303 includes a first channel, a second channel, and a third channel that are sequentially connected from the first end 301 to the second end 302. The diameter of the first channel is smaller than that of the second channel, and the diameter of the second channel is smaller than that of the third channel.

[0077] When the boost pump 20 is operating, the first vibration damper 31 is not easily damaged by the mechanical vibration of the boost pump 20, thereby providing good fixed support for the boost pump 20. The second vibration damper 32 through the fifth vibration damper 35 can produce varying degrees of elastic deformation under the mechanical vibration of the boost pump 20, thereby absorbing the vibration energy from the boost pump 20, reducing the vibration amplitude transmitted from the boost pump 20 to the mounting base 12, and achieving the effect of vibration and noise reduction.

[0078] Example 3

[0079] See also Figure 15 and Figure 16 This embodiment provides a water purifier, comprising a housing 100, a filter element disposed within the housing 100, and the booster pump assembly of any of the aforementioned embodiments. The booster pump 20 is shielded by a protective cover 10, thereby blocking noise transmission and reducing the outward transmission of vibrations generated by the booster pump 20 during operation. Via a first end 301, the vibration-damping pad 30 is stably secured to the pump bracket 22, providing good load bearing and support for the booster pump 20. Via a second end 302, the vibration-damping pad 30 absorbs and reduces the vibration energy transmitted from the booster pump 20 to the mounting base 12, thereby reducing noise loudness, improving user experience, and ensuring stable operation of the water purifier.

[0080] The shield 10 and the housing 100 may be connected by bolts. Furthermore, a shock absorbing member may be provided between the shield 10 and the housing 100 to achieve a vibration reduction effect.

[0081] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A booster pump assembly, characterized in that: include: The protective cover (10) comprises a shell (11) and a mounting seat (12), wherein the shell (11) has a receiving cavity (111), and the mounting seat (12) is arranged in the receiving cavity (111); A booster pump (20) is disposed in the accommodating chamber (111), and the booster pump (20) includes a pump body (21) and a pump bracket (22) connected to the pump body (21); A vibration damping assembly comprises a plurality of vibration damping pads (30) and a vibration damping spring (40), wherein the vibration damping pad (30) has a first end (301) and a second end (302), wherein the first end (301) is connected to the pump bracket (22), and the second end (302) is connected to the mounting seat (12), and the vibration damping spring (40) is sleeved on the outside of the vibration damping pad (30) and abuts between the pump bracket (22) and the mounting seat (12).

2. The booster pump assembly according to claim 1, characterized in that: The vibration damping pad (30) is divided into at least two vibration damping parts between the first end (301) and the second end (302), each of the vibration damping parts having a different hardness, and the hardness of each vibration damping part decreases in sequence from the first end (301) to the second end (302).

3. The booster pump assembly according to claim 2, characterized in that: The vibration damping pad (30) includes three vibration damping parts connected in sequence from the first end (301) to the second end (302), namely a first vibration damping part (31), a second vibration damping part (32) and a third vibration damping part (33). The diameter of the first vibration damping part (31) is larger than the diameter of the second vibration damping part (32), the diameter of the third vibration damping part (33) is larger than the diameter of the second vibration damping part (32), and the second vibration damping part (32) is clamped with the pump bracket (22).

4. The booster pump assembly according to claim 3, characterized in that: A clamping hole (221) is provided on the pump bracket (22), the second vibration damping portion (32) is passed through the clamping hole (221), the first vibration damping portion (31) abuts against the pump bracket (22) and is located at one end of the clamping hole (221), and the third vibration damping portion (33) abuts against the pump bracket (22) and is located at the other end of the clamping hole (221).

5. The booster pump assembly according to claim 3, characterized in that: A limiting groove is provided on the mounting seat (12), and an end of the third vibration damping portion (33) away from the second vibration damping portion (32) is inserted into the limiting groove.

6. The booster pump assembly according to claim 1, characterized in that: An accommodating channel (303) is formed inside the vibration damping pad (30), and the accommodating channel (303) passes through the vibration damping pad (30) in a direction from the first end (301) to the second end (302). The mounting seat (12) and the vibration damping pad (30) are connected via a first locking member, and the first locking member is provided through the accommodating channel (303).

7. The booster pump assembly according to claim 6, characterized in that: A vibration-damping groove (304) is provided on the inner wall of the accommodating channel (303), and the vibration-damping groove (304) penetrates the vibration-damping pad (30) in a direction from the first end (301) to the second end (302).

8. The booster pump assembly according to claim 1, characterized in that: The diameter of the vibration-damping spring (40) gradually increases along the direction from the first end (301) to the second end (302); and / or the stiffness of the vibration-damping spring (40) gradually increases along the direction from the first end (301) to the second end (302).

9. The booster pump assembly according to any one of claims 1 to 8, characterized in that: The housing (11) comprises a first shell (112) and a second shell (113) that are detachably connected. The first shell (112) and the second shell (113) are engaged with each other to form the accommodating cavity (111). The mounting seat (12) is arranged at the bottom of the first shell (112). The booster pump (20) and the second shell (113) are spaced apart.

10. A water purifier, characterized in that: The invention comprises a casing (100), a filter element arranged in the casing (100), and a booster pump assembly according to any one of claims 1 to 9.

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