Diaphragm booster pump and water purifier

Abstract

The application relates to the technical field of diaphragm booster pumps, and provides a diaphragm booster pump and a water purifier, wherein the diaphragm booster pump comprises a diaphragm pump body, the diaphragm pump body comprises a pump cover, the pump cover is provided with a water inlet cavity and a water outlet pipeline for water flow; a first elastic energy absorption structure is arranged in the water inlet cavity, and a second elastic energy absorption structure is arranged in the water outlet pipeline; the first elastic energy absorption structure and / or the second elastic energy absorption structure is provided with an elastic air bag structure capable of changing volume under the action of water pressure. The diaphragm booster pump and the water purifier provided by the application can reduce the generation of noise in the diaphragm booster pump.

Description

Technical Field

[0001] This application relates to the field of diaphragm booster pump technology, and in particular to a diaphragm booster pump and a water purifier. Background Technology

[0002] Diaphragm booster pumps, also known as positive displacement diaphragm pumps, are now widely used in household water purifiers. Their main principle is to utilize the diaphragm within the pump chamber to reciprocate periodically, causing volume changes in the liquid inside the chamber to complete the intake and pressurized discharge of the liquid.

[0003] The motor in the diaphragm booster pump drives the eccentric wheel, which in turn drives the diaphragm to reciprocate, periodically changing the pump chamber volume to achieve a cycle of water intake → compression → drainage. This periodic volume change, coupled with factors such as mechanical structure vibration coupling, generates pressure pulsations in the drainage fluid. This can lead to significant noise during the operation of the diaphragm booster pump. Furthermore, when the pressure pulsations cause pipeline vibration, the pipeline vibration can resonate and be transmitted to the water purifier system, causing the entire water purifier to vibrate and generate noise pollution, seriously affecting the customer's actual user experience.

[0004] Therefore, further improvements are needed to the noise reduction design of the diaphragm booster pump. Summary of the Invention

[0005] The purpose of this invention is to overcome at least the technical problem of noise generation in diaphragm booster pumps in the prior art, and to provide a diaphragm booster pump and water purifier that can help reduce noise generation in diaphragm booster pumps.

[0006] A diaphragm booster pump includes a diaphragm pump body, the diaphragm pump body including a pump cover, the pump cover having an inlet chamber for water supply and an outlet pipe; a first elastic energy-absorbing structure is provided in the inlet chamber, and a second elastic energy-absorbing structure is provided in the outlet pipe; the first elastic energy-absorbing structure and / or the second elastic energy-absorbing structure have an elastic airbag structure that can generate volume changes under water pressure.

[0007] A water purifier includes a water purifier body, wherein a diaphragm booster pump as described in the first aspect is installed inside the water purifier body, and a pump fixing structure for fixing the diaphragm booster pump is provided on the water purifier body; the pump fixing structure includes a pump fixing plate and a clamp; the diaphragm booster pump abuts against the pump fixing plate, and both ends of the clamp are detachably connected to the pump fixing plate to clamp the diaphragm booster pump to the pump fixing plate; a vibration damping soft rubber pad for abutting against the diaphragm booster pump is provided on the side of the clamp near the diaphragm booster pump.

[0008] The diaphragm booster pump and water purifier provided by this invention have the following advantages: When the diaphragm booster pump of this application is working, when the water in the inlet chamber and outlet pipe experiences pressure pulsations due to the operation of the diaphragm booster pump, the first elastic energy-absorbing structure in the inlet chamber can absorb the energy of the water pressure pulsations through elastic deformation, attenuating the amplitude of the water pressure pulsations in the inlet chamber and reducing the noise generated on the pump cover due to the water pressure pulsations in the inlet chamber; the second elastic energy-absorbing structure in the outlet pipe can absorb the energy of the water pressure pulsations in the outlet pipe through elastic deformation, attenuating the amplitude of the water pressure pulsations in the outlet pipe and reducing the noise generated on the pump cover due to the water pressure pulsations in the outlet pipe. The first and second elastic energy-absorbing structures can reduce the noise generated on the pump cover.

[0009] Furthermore, when the outlet pipe is connected to the water system, the second elastic energy-absorbing structure can absorb the pressure pulsation of the water flow in the outlet pipe, which also helps to reduce the amplitude of the pressure pulsation of the water flow discharged from the outlet pipe, and can prevent the water system downstream of the outlet pipe from vibrating and generating noise due to the water flow pulsation. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a three-dimensional schematic diagram of the diaphragm pump body provided in an embodiment of the present invention; Figure 2a This is a first exploded view of the diaphragm pump body provided in an embodiment of the present invention; Figure 2b This is a second exploded view of the diaphragm pump body provided in an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the pump cover provided in an embodiment of the present invention; Figure 4 This is a first exploded view of the pump cover provided in an embodiment of the present invention; Figure 5 This is a second exploded view of the pump cover provided in an embodiment of the present invention; Figure 6 This is a first bottom view of the pump cover provided in an embodiment of the present invention; Figure 7a yes Figure 6 Schematic diagram of the cross section at point AA; Figure 7b yes Figure 7a Enlarged view at point C; Figure 7c This is an exploded view of the elastic gasket and mounting component provided in the embodiments of the present invention; Figure 8a yes Figure 6 Schematic diagram of the cross section at point BB; Figure 8b yes Figure 8a Enlarged view at point D; Figure 8c This is a longitudinal cross-sectional view of the porous tube and elastic rubber sleeve provided in the embodiment of the present invention; Figure 8d This is an exploded view of the porous tube and elastic rubber sleeve provided in the embodiments of the present invention; Figure 9 This is a second bottom view of the pump cover provided in an embodiment of the present invention; Figure 10 yes Figure 9 Cross-sectional view at the EE section; Figure 11 yes Figure 10 Enlarged view at point F; Figure 12 This is a third exploded view of the pump cover provided in an embodiment of the present invention; Figure 13 This is the fourth exploded view of the pump cover provided in the embodiment of the present invention; Figure 14 This is a top view of the pump cover provided in this embodiment of the invention when the valve plate fixing structure and the pressure relief valve plate are removed, and the pressure relief chamber is exposed. Figure 15 This is a three-dimensional schematic diagram of the pressure relief valve plate provided in an embodiment of the present invention; Figure 16 This is an exploded view of the pump fixing structure provided in an embodiment of the present invention; Figure 17 This is an exploded view of the pump chamber structure provided in an embodiment of the present invention; Figure 18a This is a first exploded view of the diaphragm, transmission structure, and reinforcement provided in the embodiments of the present invention; Figure 18b This is a second exploded view of the diaphragm, transmission structure, and reinforcement provided in the embodiments of the present invention; Figure 19 This is a top view of the diaphragm, support bracket, transmission structure, and reinforcement provided in the embodiments of the present invention; Figure 20 yes Figure 19 Cross-sectional view at point GG.

[0012] Component descriptions for this application: 100-Pump cover; 110-Outlet pipe; 111-Outlet; 120-Inlet chamber; 121-Inlet; 130-Plug-in connector; 131-Annular groove; 132-Locking pin; 133-Locking interface; 134-First stage; 135-Second stage; 200 - First elastic energy-absorbing structure; 210 - Installation chamber structure; 211 - Cavity; 212 - Annular groove; 220 - Elastic gasket; 221 - Support ring; 222 - First annular sealing protrusion; 230 - Mounting component; 231 - Second annular sealing protrusion; 300 - Second elastic energy-absorbing structure; 310 - Vibration-absorbing tube assembly; 311 - Piping; 312 - Enclosed air chamber; 320 - Elastic rubber sleeve; 321 - Second outer convex edge; 322 - Inner convex edge; 323 - Groove structure; 330 - Porous tube; 331 - Through hole; 332 - First outer protrusion; 333 - Acoustic resistance ring; 334 - First region; 335 - Second region; 340 - Diversion channel; 350 - Mounting flange; 400 - Pressure relief structure; 410 - Pressure relief chamber shell; 411 - Pressure relief cavity; 4111 - Pressure relief channel; 4112 - Vibration absorption channel; 412 - High pressure hole; 413 - Return hole; 414 - Vibration absorption hole; 415 - Protruding part; 416 - Mounting port; 417 - Partitioned protrusion; 4171 - First enclosed area; 4172 - Second enclosed area; 420 - Pressure relief valve plate; 421 - First side; 422 - Second side; 423 - Vibration absorption groove structure; 424 - Bag structure; 4241 - Support protrusion; 4242 - Connecting rib; 4243 - Reinforcing protrusion; 425 - Valve plate sealing protrusion; 430 - Valve plate fixing structure; 431 - Support structure; 4311 - First cavity structure; 4312 - Second cavity structure; 432 - Elastic element; 433 - Pressure regulating element; 500 - Pump chamber structure; 510 - Support bracket; 520 - Diaphragm; 521 - Inverted structure; 5211 - First part; 5212 - Second part; 5213 - Hook; 530 - Pump chamber valve structure; 540 - Transmission structure; 541 - Sleeve; 5411 - Snap-fit ​​flange; 550 - Reinforcing part; 551 - Wedge; 600-Motor assembly base; 610-Motor base mounting cover; 611-Locking screw hole; 620-First soft rubber pad; 630-Power base; 700 - Pump mounting structure; 710 - Pump mounting plate; 711 - Hanging interface; 712 - Locking bolt; 720 - Hoop; 721 - Vibration damping soft rubber pad; 722 - Hook; 800-Diaphragm pump body. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0014] like Figures 1 to 5 As shown in the figure, an embodiment of the present invention provides a diaphragm booster pump, including a diaphragm pump body 800, the diaphragm pump body 800 including a pump cover 100, the pump cover 100 having a water inlet chamber 120 for water supply and a water outlet pipe 110; a first elastic energy absorption structure 200 is provided in the water inlet chamber 120, and a second elastic energy absorption structure 300 is provided in the water outlet pipe 110.

[0015] In practical applications, both the inlet chamber 120 and the outlet pipe 110 are filled with water, and both the first elastic energy-absorbing structure 200 and the second elastic energy-absorbing structure 300 can undergo elastic deformation. When the water in the inlet chamber 120 and the outlet pipe 110 experiences pressure pulsations due to the operation of the diaphragm booster pump, the first elastic energy-absorbing structure 200, located in the inlet chamber 120, can absorb the energy of the water pressure pulsations through elastic deformation, attenuating the amplitude of the water pressure pulsations and reducing the noise generated by the pump cover 100 due to the water pressure pulsations in the inlet chamber 120. Similarly, the second elastic energy-absorbing structure 300, located in the outlet pipe 110, can absorb the energy of the water pressure pulsations through elastic deformation, attenuating the amplitude of the water pressure pulsations and reducing the noise generated by the pump cover 100 due to the water pressure pulsations in the outlet pipe 110.

[0016] Thus, when the diaphragm booster pump of this application is working, the first elastic energy-absorbing structure 200 and the second elastic energy-absorbing structure 300 can reduce the noise generated in the diaphragm booster pump (pump cover 100). Furthermore, when the outlet pipe 110 is connected to the water system, since the second elastic energy-absorbing structure 300 can absorb the pressure pulsation of the water flow in the outlet pipe 110, it is also beneficial to reduce the amplitude of the pressure pulsation of the water flow discharged from the outlet pipe 110, and can prevent the water system downstream of the outlet pipe 110 from vibrating and generating noise due to water flow pulsation.

[0017] Specifically, the first elastic energy-absorbing structure 200 and the second elastic energy-absorbing structure 300 have elastic airbag structures that can generate volume changes under water pressure.

[0018] In the actual working condition of water pressure pulsation within the inlet chamber 120, the elastic airbag structure on the first elastic energy-absorbing structure 200 can collapse under force, increasing the air pressure inside the elastic airbag structure, which in turn facilitates the rapid elastic recovery of the elastic airbag structure. Similarly, in the actual working condition of water pressure pulsation within the outlet pipe 110, the elastic airbag structure on the second elastic energy-absorbing structure 300 can collapse under force, increasing the air pressure inside the elastic airbag structure, which in turn facilitates the rapid elastic recovery of the elastic airbag structure.

[0019] Through the deformation and recovery of the elastic airbag structure on the first elastic energy-absorbing structure 200 and the second elastic energy-absorbing structure 300, the water pressure pulsation in the water inlet chamber 120 and the water outlet pipe 110 can be transformed into a smooth energy release process, attenuating the amplitude of the water pressure pulsation, and playing a role in absorbing the water pressure pulsation and assisting in buffering the water flow, which helps to avoid the water pressure pulsation from generating noise in the water inlet chamber 120 and the water outlet pipe 110.

[0020] Understandably, in a specific implementation of the diaphragm booster pump, the diaphragm pump body 800 also includes a pump chamber structure 500. The pump cover 100 is provided with an inlet 121 connecting to the inlet chamber 120. The inlet end of the pump chamber structure 500 connects to the inlet chamber 120, and the outlet end of the pump chamber structure 500 connects to the outlet pipe 110 on the pump cover 100. When the diaphragm booster pump pumps water, water flows from the inlet 121 into the inlet chamber 120, and then into the pump chamber within the pump chamber structure 500. After being pressurized within the pump chamber structure 500, the water is discharged into the outlet pipe 110, and then discharged to the outside through the outlet pipe 110. The outlet end of the outlet pipe 110 is the outlet 111.

[0021] Specifically, the first elastic energy-absorbing structure 200 includes a mounting chamber structure 210 and an elastic gasket 220; the mounting chamber structure 210 has a cavity 211 and the cavity 211 opens toward the water inlet chamber 120, and the elastic gasket 220 is disposed in the mounting chamber structure 210 to close the opening of the cavity 211; the mounting chamber structure 210 is also connected to a mounting member 230 for pressing the elastic gasket 220 against the mounting chamber structure 210.

[0022] Please see Figures 5 to 7c In this embodiment, the mounting chamber structure 210 includes an annular wall disposed within the water inlet chamber 120, and a cavity 211 is formed inside the wall of the mounting chamber structure 210. The mounting chamber structure 210 can be integrally formed with the pump cover 100 or installed on the pump cover 100; in this embodiment, the mounting chamber structure 210 and the pump cover 100 are integrally injection molded.

[0023] The end of the mounting chamber structure 210 has an annular end face. An elastic gasket 220 can be disposed on the end of the mounting chamber structure 210, thereby sealing the opening of the cavity 211 and forming an "elastic airbag structure" in the cavity 211. When pressure pulsation occurs in the water in the water inlet chamber 120, the elastic gasket 220 can be subjected to force and collapse and deform into the cavity 211 (i.e., the elastic gasket 220 bulges and deforms in the cavity 211), and then quickly returns to its original position under the action of increased air pressure in the cavity 211. In this way, the cavity 211 reduces the rigid constraint of the elastic gasket 220 when deformed, and the air pressure change in the cavity 211 facilitates the rapid return of the elastic gasket 220 after deformation, making it easier for the elastic gasket 220 to absorb water pressure pulsation in the water inlet chamber 120 and attenuate the amplitude of the water pressure pulsation.

[0024] Specifically, the elastic gasket 220 can be made of rubber.

[0025] Furthermore, to enhance the sealing of the cavity 211, this application provides a sheet-like mounting member 230. The mounting member 230 may be annular, and it may abut against the elastic gasket 220 from the side of the elastic gasket 220 facing away from the mounting chamber structure 210, thereby pressing the elastic gasket 220 against the end of the mounting chamber structure 210. When the mounting member 230 abuts against the side of the elastic gasket 220 facing away from the mounting chamber structure 210, the inner ring of the mounting member 230 may be positioned corresponding to the cavity 211, so that the portion of the elastic gasket 220 that can collapse and deform into the cavity 211 (the side facing the water inlet cavity 120) is exposed in the water inlet cavity 120, thereby contacting the water in the water inlet cavity 120, which facilitates the water in the water inlet cavity 120 to drive the elastic gasket 220 to deform.

[0026] Bolts can be provided through the opposite sides of the mounting component 230, and threaded holes corresponding to the bolts can be provided at the end of the mounting chamber structure 210. Thus, the bolts can pass through the mounting component 230 and connect to the threaded holes on the mounting chamber structure 210, thereby abutting against the mounting component 230 and the mounting chamber structure 210; the mounting component 230 and the mounting chamber structure 210 clamp the elastic gasket 220.

[0027] It is understandable that the elastic gasket 220 has a support ring 221 on the side facing the cavity 211. The support ring 221 is used to support the elastic gasket 220 when it collapses and deforms into the cavity 211, so as to prevent the elastic gasket 220 from being excessively deformed.

[0028] It is understood that the elastic gasket 220 has a first annular sealing protrusion 222 on one side edge facing the end of the mounting chamber structure 210, and an annular groove 212 can be provided at the end of the mounting chamber structure 210 corresponding to the first annular sealing protrusion 222. The first annular sealing protrusion 222 and the annular groove 212 cooperate to enhance the sealing of the cavity 211 when the elastic gasket 220 is installed on the mounting chamber structure 210.

[0029] Understandably, see Figure 7c The elastic gasket 220 has an undulating structure and protrudes from the inner ring of the mounting member 230. This facilitates the contact of the elastic gasket 220 with the water flow in the water inlet chamber 120.

[0030] It is understood that the side of the mounting member 230 facing the elastic gasket 220 may be provided with a second annular sealing protrusion 231 around the inner ring of the mounting member 230. When the mounting member 230 abuts against the elastic gasket 220 at the end of the mounting chamber structure 210, the second annular sealing protrusion 231 can press against the elastic gasket 220 at the end of the mounting chamber structure 210, further enhancing the sealing performance of the cavity 211 when the elastic gasket 220 is installed in the mounting chamber structure 210.

[0031] Specifically, the second elastic energy-absorbing structure 300 includes a vibration-absorbing tube assembly embedded in the water outlet pipe 110; the vibration-absorbing tube assembly has a water supply pipe 311. When water flows in the water outlet pipe 110 to a specific section where the vibration-absorbing tube assembly is installed, the water flows from upstream of the specific section into the pipe 311 in the vibration-absorbing tube assembly, and flows downstream of the specific section or out of the water outlet pipe 110 through the pipe 311.

[0032] The outer sides of both ends of the vibration-absorbing tube assembly are sealed to the inner side of the water outlet pipe 110. The outer wall of the vibration-absorbing tube assembly and the inner wall of the water outlet pipe 110 are spaced apart to define a closed air chamber 312 (i.e., the closed air chamber 312 forms an "elastic airbag structure"). Local areas on the vibration-absorbing tube assembly can elastically deform under the action of water pressure in the pipe 311, and the volume of the closed air chamber 312 changes due to the elastic deformation of the vibration-absorbing tube assembly.

[0033] In practical applications, when the water pressure in the outlet pipe 110 pulsates, the water pressure in the pipe 311 pulsates accordingly; thus, the local area (elastically deformable) on the vibration-absorbing pipe assembly can elastically deform under the action of water pressure, causing the volume of the closed air chamber 312 to change accordingly, and consequently the air pressure in the closed air chamber 312 also changes accordingly.

[0034] For example, a localized area on the vibration-absorbing tube assembly (which can be elastically deformed) can be deformed into the enclosed air chamber 312 under pressure, causing the volume of the enclosed air chamber 312 to decrease and collapse, thus increasing the air pressure. The relatively increased air pressure in the enclosed air chamber 312 can then facilitate the rapid reset of the localized area on the vibration-absorbing tube assembly. In this way, the arrangement of the vibration-absorbing tube assembly and the enclosed air chamber 312 can buffer the water pressure pulsations in the water outlet pipe 110, attenuate the amplitude of the water pressure pulsations, and thereby reduce the noise generated in the water outlet pipe 110.

[0035] Further, please refer to Figure 5 , Figures 8a to 8d In this embodiment, the vibration-absorbing tube assembly includes an elastic sleeve 320 and a porous tube 330; the porous tube 330 has a plurality of through holes 331 extending through both the inside and outside; the elastic sleeve 320 is sleeved on the outside of the porous tube 330; and the inner sides of both ends of the elastic sleeve 320 and the outer sides of both ends of the porous tube 330 are sealed together.

[0036] The outer wall of the elastic sleeve 320 and the inner wall of the water outlet pipe 110 are spaced apart to form the closed air chamber 312. The elastic sleeve 320 can be elastically deformed under the water pressure in the pipe 311, thereby changing the volume of the closed air chamber 312.

[0037] The interior of the elastic sleeve 320 is the conduit 311 (of the vibration-absorbing tube assembly). After water flows into the conduit 311, it flows within the porous tube 330. With the water pressure pulsations, the water flow can be diverted through the through-holes 331 on the porous tube 330, thus applying pressure to the elastic sleeve 320 on the outside of the porous tube 330, causing the elastic sleeve 320 to deform. The outer wall of the elastic sleeve 320 is spaced from the inner wall of the outlet pipe 110 to form a closed air chamber 312. The air within the closed air chamber 312 can be compressed by the deformation of the elastic sleeve 320 due to the water flow. The increased air pressure within the closed air chamber 312 gives the elastic sleeve 320 elastic potential energy, facilitating its rapid subsequent return to its original position. This allows the elastic sleeve 320 to absorb and attenuate the amplitude of the water pressure pulsations.

[0038] In this embodiment, the inner side of the elastic sleeve 320 and the outer side of the porous tube 330 are spaced apart to form a diversion channel 340, which surrounds the outer wall of the porous tube 330. When water flows through the through hole 331 and into the diversion channel 340, the water flow can impact and squeeze the elastic sleeve 320 and flow in the diversion channel 340, causing the elastic sleeve 320 to deform.

[0039] Of course, in other embodiments, the elastic sleeve 320 can also elastically block each of the through holes 331 and elastically deform under water pressure; after the elastic sleeve 320 is elastically deformed under water pressure, the space created by its deformation forms a diversion channel 340 for water flow.

[0040] In this embodiment, when the water flow experiences pressure pulsations (especially high-frequency pulsations) within the porous tube 330, some of the water flow is diverted through the through-holes 331 to form a compression elastic sleeve 320. The remaining water flow within the compression elastic sleeve 320 can then be rebounded and squeezed back into the porous tube 330, forming a backflowing microfluidic stream around each through-hole 331 of the porous tube 330. This backflowing microfluidic stream helps to break up the eddies generated during water flow within the porous tube 330, reducing localized vibrations caused by eddies impacting the wall of the porous tube 330.

[0041] The elastic sleeve 320 can be made of an elastic sealing material, such as rubber; the porous tube 330 can be made of a rigid material. When the porous tube 330 and the elastic sleeve 320 are nested together and installed into the water outlet pipe 110, the outer ends of the porous tube 330 can be arranged to press the two end walls of the elastic sleeve 320 against the wall of the water outlet pipe 110. This helps to improve the sealing effect when the vibration-absorbing tube assembly is embedded and installed in the water outlet pipe 110.

[0042] Specifically, before embedding the vibration-absorbing tube assembly into the water outlet pipe 110, an elastic sleeve 320 can be fitted onto the porous tube 330, sealing the outer ends of the porous tube 330 with the inner ends of the elastic sleeve 320. After embedding the porous tube 330 into the water outlet pipe 110, the outer ends of the elastic sleeve 320 can be sealed to the wall of the water outlet pipe 110. After the porous tube 330 and the elastic sleeve 320 are embedded in the water outlet pipe 110, the wall of the water outlet pipe 110, the elastic sleeve 320, and the porous tube 330 are nested from the outside in.

[0043] Furthermore, in this embodiment, the outer side of the outlet end of the porous tube 330 has a first outer convex edge 332, the outer side of the outlet end of the elastic sleeve 320 has a second outer convex edge 321, and the inner side of the inlet end of the elastic sleeve 320 has an inner convex edge 322; when the elastic sleeve 320 is sleeved on the porous tube 330, the first outer convex edge 332 is stacked and connected to the second outer convex edge 321, and the inlet end of the porous tube 330 abuts against the inward side of the inner convex edge 322.

[0044] Please see Figure 8bIn this embodiment, the outlet end of the water outlet pipe 110 has a stepped, gradually expanding structure in which the inner diameter gradually increases from the inside to the outside along the water outlet direction. When the porous tube 330 and the elastic sleeve 320 are nested and connected and embedded together in the water outlet pipe 110, the rigid porous tube 330 can be secured in the outlet end of the water outlet pipe 110 by the first outer protrusion 332, and the first outer protrusion 332 of the porous tube 330 can press the second outer protrusion 321 on the elastic sleeve 320 into the outlet end of the water outlet pipe 110 (on the stepped, gradually expanding structure). In this way, the first outer protrusion 332 can seal the inner wall of the outlet end of the water outlet pipe 110, and both the porous tube 330 and the elastic sleeve 320 are inserted into and secured in the outlet end of the water outlet pipe 110, and the outer side of the outlet end of the vibration-absorbing tube assembly and the inner side of the water outlet pipe 110 are sealed together.

[0045] Furthermore, in a specific implementation scenario of this embodiment, to facilitate a sealed connection between the outer side of the water inlet end of the vibration-absorbing tube assembly and the inner side of the water outlet pipe 110, an mounting flange 350 is also provided inside the water outlet pipe 110 at the corresponding inner flange 322. When the elastic sleeve 320 is nested and connected to the porous tube 330 and inserted into the water outlet pipe 110 together, the water inlet end of the porous tube 330 and the mounting flange 350 clamp the inner flange 322, so that the water inlet end of the porous tube 330, the inner flange 322, and the mounting flange 350 are sealed together.

[0046] Preferably, please refer to Figure 8d In this embodiment, the outer side of the elastic sleeve 320 has multiple circumferentially spaced groove structures 323, each groove structure 323 extending along the axial direction of the elastic sleeve 320. When the elastic sleeve 320 is deformed by water pressure on its inner side (i.e., the side of the elastic sleeve 320 within the diversion channel 340), the outer side of the elastic sleeve 320 can relatively approach the inner wall of the water outlet pipe 110. Furthermore, the outer side of the elastic sleeve 320 can abut against the inner wall of the water outlet pipe 110 through the opening of the groove structure 323, so that the corresponding groove structure 323 and the inner wall of the water outlet pipe 110 cooperate to form a local airbag. The independent and closed local airbag can make the elastic sleeve 320 have good elastic stiffness through the change of air pressure inside, avoiding excessive deformation of the elastic sleeve 320.

[0047] Further, please refer to Figure 8c In this embodiment, an acoustic damping ring 333 is provided inside the porous tube 330, and each of the through holes 331 is distributed on the porous tube 330 at the upstream and downstream positions corresponding to the acoustic damping ring 333.

[0048] In practical applications, after the water enters the pipe 311, the water can flow inside the porous pipe 330 and pass through the acoustic ring 333 to the downstream end of the porous pipe 330; or, the water can also flow out of the porous pipe 330 through the through hole 331 on the porous pipe 330 (located upstream of the acoustic ring 333), enter the diversion channel 340 defined between the inner side of the elastic sleeve 320 and the outer side of the porous pipe 330, flow in the diversion channel 340, and then flow back into the porous pipe 330 through the through hole 331 on the porous pipe 330 (located downstream of the acoustic ring 333).

[0049] Because the acoustic damping ring 333 reduces the flow area inside the porous pipe 330, and the water flow upstream of the acoustic damping ring 333 in the porous pipe 330 can bypass the acoustic damping ring 333 through the diversion channel 340 (and then flow to the downstream of the acoustic damping ring 333 in the porous pipe 330), in actual working conditions, there will be water flow in both the diversion channel 340 and the porous pipe 330.

[0050] Please see Figure 6 and Figure 8a With the x-direction as the flow direction of the water in the outlet pipe 110, the portion of the porous pipe 330 upstream of the acoustic damping ring 333 is designated as the first region 334, and the portion downstream of the acoustic damping ring 333 is designated as the second region 335. In actual operation, within the first region 334, some water flows through the through-hole 331, resulting in a diversion from the porous pipe 330 to the diversion channel 340. Within the diversion channel 340, corresponding to the second region 335, water flows through the through-hole 331, resulting in a return flow from the diversion channel 340 back into the porous pipe 330. This diversion phenomenon in the first region 334 can shear the turbulent boundary layer of the water flow within the first region 334; the return flow from the diversion channel 340 to the second region 335 can impact the water flow within the second region 335, thereby dissipating the turbulent boundary layer of the water flow within the second region 335. This reduces the intensity of water flow turbulence pulsation experienced by the porous tube 330, thereby reducing noise generation.

[0051] Furthermore, the acoustic damping ring 333 in this application prevents noise propagation within the porous tube 330 through the acoustic impedance abrupt change principle of the reactive silencer. For example, by setting the acoustic damping ring 333, this application causes a sudden change in the flow area within the porous tube 330, thereby causing a drastic change in the "acoustic impedance" within the porous tube 330. When water flows through the acoustic damping ring 333 within the porous tube 330, the sound waves carried by the water flow can be reflected, refracted, and lose energy at the acoustic damping ring 333 (upstream of the acoustic damping ring 333), thereby hindering the propagation of noise downstream of the acoustic damping ring 333.

[0052] Specifically, please refer to Figure 8cThe outer edge of the acoustic damping ring 333 is connected to the inner wall of the porous tube 330. The first region 334 and the second region 335 within the porous tube 330, located upstream and downstream of the acoustic damping ring 333 respectively, are connected through the inner ring of the acoustic damping ring 333. By setting the acoustic damping ring 333, the flow area within the porous tube 330 undergoes a sudden contraction and expansion. For example, when water flows within the porous tube 330, the flow velocity increases instantaneously at the inner ring of the acoustic damping ring 333 (i.e., where the flow area within the porous tube 330 suddenly contracts), thereby suppressing pressure pulsations in the water flow. After passing through the inner ring of the acoustic damping ring 333, the flow area expands relatively, resulting in a sudden drop in flow velocity. Furthermore, the water flow can form micro-vortices in the area near the downstream side of the acoustic damping ring 333. The mechanical energy of these micro-vortices can be converted into heat energy and dissipated, further consuming the acoustic and kinetic energy in the water flow.

[0053] Thus, the acoustic damping ring 333 can suppress the transmission of water flow pressure pulsations.

[0054] Furthermore, please refer to the following: Figures 9 to 15 The pump cover 100 has a pressure relief structure 400, which has a pressure relief chamber 411. The pressure relief chamber 411 connects the water outlet pipe 110 and the water inlet chamber 120. Thus, when the water pressure in the water outlet pipe 110 is too high, the water in the water outlet pipe 110 can flow into the pressure relief chamber 411 and then flow to the water inlet chamber 120 for pressure relief.

[0055] The pressure relief chamber 411 contains a pressure relief valve plate 420, which is used to prevent the outlet pipe 110 and the inlet chamber 120 from being connected through the pressure relief chamber 411. The pressure relief valve plate 420 is made of elastic material; that is, the pressure relief valve plate 420 can use its own elastic stiffness to prevent water from flowing back to the inlet chamber 120 through the water path of the outlet pipe 110-pressure relief chamber 411-inlet chamber 120. For example, in its natural state (i.e., when the pressure relief valve plate 420 is not deformed by the water pressure), the pressure relief valve plate 420 can prevent water in the outlet pipe 110 from flowing to the inlet chamber 120 through the pressure relief chamber 411. When the water pressure in the outlet pipe 110 is too high, the pressure relief valve plate 420 can be elastically deformed under force, so that water in the outlet pipe 110 can flow to the inlet chamber 120 through the pressure relief chamber 411.

[0056] In this application, the pressure relief valve plate 420 has a first side 421 for contacting water and a second side 422 relative to the first side 421. The pressure relief valve plate 420 has a vibration-absorbing groove structure 423 on the first side 421 and a bulge structure 424 on the second side 422. The inner cavity of the bulge structure 424 opens into the first side 421 to define the vibration-absorbing groove structure 423.

[0057] In practical applications, when water flows from the outlet pipe 110 into the pressure relief chamber 411, the water can flow into (impact) the vibration-absorbing groove structure 423 of the opening on the first side 421 of the pressure relief valve plate 420, that is, flow into the inner cavity of the corresponding bladder structure 424, thereby causing the pressure relief valve plate 420 to bulge and deform at the vibration-absorbing groove structure 423 (that is, causing the corresponding bladder structure 424 to bulge and deform).

[0058] When the diaphragm booster pump is working, the water flowing into the outlet pipe 110 usually has pressure pulsations. As the water flows into the pressure relief chamber 411 due to these pressure pulsations, and then into (impacting) the vibration-absorbing groove structure 423, the water flow causes the pressure relief valve plate 420 to elastically expand and deform at the vibration-absorbing groove structure 423. This elastic deformation allows the pressure relief valve plate 420 to absorb the energy of the water pressure pulsations, attenuating the amplitude of the pressure pulsations in the outlet pipe 110. This helps reduce the noise caused by drastic fluctuations in water pressure in the outlet pipe 110.

[0059] Specifically, the pressure relief structure 400 includes a pressure relief chamber shell 410, and the pressure relief chamber shell 410 has a pressure relief cavity 411 inside; the bottom of the pressure relief chamber shell 410 is provided with a high pressure hole 412, a return hole 413 and a vibration absorption hole 414; the high pressure hole 412 and the vibration absorption hole 414 are connected to the water outlet pipe 110, and the return hole 413 is connected to the water inlet cavity 120; the pressure relief valve plate 420 is relatively close to the bottom of the pressure relief chamber shell 410; the pressure relief valve plate 420 blocks the high pressure hole 412 and the return hole 413 from communicating through the pressure relief cavity 411 in its natural state, and the pressure relief valve plate 420 can elastically deform to allow the high pressure hole 412 and the return hole 413 to communicate through the pressure relief cavity 411.

[0060] Within the pressure relief chamber 411, the vibration absorption hole 414 is connected to the vibration absorption groove structure 423, and the vibration absorption hole 414 is isolated from the high pressure hole 412 and the return hole 413 within the pressure relief chamber 411.

[0061] Specifically, please refer to Figure 12 and Figure 13 A portion of the wall of the pressure relief chamber shell 410 forms the wall of the pump cover 100 at the outlet pipe 110 and the inlet chamber 120; the outer wall of the pressure relief chamber shell 410 is provided with a high-pressure hole 412 and a return hole 413 corresponding to the outlet pipe 110 and the inlet chamber 120, respectively. The outlet pipe 110 is connected to the pressure relief chamber 411 through the high-pressure hole 412, and the inlet chamber 120 is connected to the pressure relief chamber 411 through the return hole 413.

[0062] In practical applications, when the water pressure in the outlet pipe 110 is too high, the water in the outlet pipe 110 can flow into the pressure relief chamber 411 through the high-pressure hole 412, and then flow back into the inlet chamber 120 through the return hole 413, thereby relieving the pressure of the water in the outlet pipe 110. That is, the high-pressure hole 412 can be used as the inlet end of the pressure relief channel 4111 in the pressure relief chamber 411, and the return hole 413 can be used as the outlet end of the pressure relief channel 4111 in the pressure relief chamber 411.

[0063] The pressure relief valve plate 420 has a first side 421 facing the high pressure hole 412 and the return hole 413. After the water in the outlet pipe 110 flows into the pressure relief chamber 411 through the high pressure hole 412, the water can contact the first side 421 of the pressure relief valve plate 420 and be blocked by the pressure relief valve plate 420, so that it cannot flow to the return hole 413.

[0064] The pressure relief valve plate 420 can elastically deform to create a gap (deformation space) between the first side 421 of the pressure relief valve plate 420 and the corresponding inner wall of the pressure relief chamber shell 410, allowing water to flow through. When the water pressure in the outlet pipe 110 is too high, the pressure relief valve plate 420 elastically deforms to create a gap between itself and the corresponding inner wall of the pressure relief chamber shell 410, allowing water flowing from the high-pressure hole 412 into the pressure relief chamber 411 to flow through this gap to the return hole 413.

[0065] More specifically, the first side 421 of the pressure relief valve plate 420 can be disposed close to the inner wall of the pressure relief chamber shell 410 within the pressure relief cavity 411. When the pressure relief valve plate 420 is in its natural state (i.e., when it is not deformed due to fluid pressure), the first side 421 of the pressure relief valve plate 420 can block the backflow hole 413 on the pressure relief chamber shell 410. When water flows into the pressure relief cavity 411 from the outlet pipe 110 through the high-pressure hole 412, and the water pressure is high enough, the pressure relief valve plate 420 can be compressed and elastically deformed, creating a gap between the first side 421 of the pressure relief valve plate 420 and the corresponding inner wall of the pressure relief chamber shell 410, and the first side 421 of the pressure relief valve plate 420 no longer blocks the backflow hole 413. Thus, within the pressure relief chamber 411, this spacing serves as a pressure relief channel 4111, connecting the high-pressure hole 412 and the return hole 413; the water flowing into the pressure relief chamber 411 through the high-pressure hole 412 can flow through this spacing to the return hole 413, and then return to the water inlet chamber 120.

[0066] In practical applications, water flow in the outlet pipe 110 can flow into the pressure relief chamber 411 through the vibration absorption hole 414, and then flow into (impact) the vibration absorption groove structure 423 located in a local area on the pressure relief valve plate 420. After the water flow with pressure pulsation flows into (impacts) the vibration absorption groove structure 423 located in a local area on the pressure relief valve plate 420, the water flow can drive the pressure relief valve plate 420 to elastically bulge and deform at the vibration absorption groove structure 423.

[0067] In this application, a vibration-absorbing hole 414 can be provided within the pressure relief chamber 411, isolating it from the high-pressure hole 412 and the return hole 413. That is, within the pressure relief chamber 411, the flow channel (i.e., pressure relief channel 4111) formed under fluid pressure from the high-pressure hole 412 to the return hole 413 is isolated from the flow channel (i.e., vibration-absorbing channel 4112) from the vibration-absorbing hole 414 to the vibration-absorbing groove structure 423. The pressure relief channel 4111 and the vibration-absorbing channel 4112 are not interconnected within the pressure relief chamber 411. This prevents the water pressure within the vibration-absorbing channel 4112 from affecting the appearance or disappearance of the pressure relief channel 4111.

[0068] In this application, the pressure relief valve plate 420 integrates pressure relief and vibration absorption functions, exhibiting a high degree of integration.

[0069] It is understandable that after the water flows into the vibration-absorbing channel 4112 through the self-absorbing vibration hole 414 and drives the pressure relief valve plate 420 to deform elastically, it can flow back into the water outlet pipe 110 under the elastic reset action of the pressure relief valve plate 420.

[0070] Specifically, in this embodiment, the opening of the vibration-absorbing groove structure 423 is hole-shaped (the vibration-absorbing groove structure 423 is a blind hole), and multiple vibration-absorbing holes 414 can be provided, and multiple vibration-absorbing groove structures 423 can be provided corresponding to each vibration-absorbing hole 414 (in this embodiment, two sets of vibration-absorbing holes 414 and vibration-absorbing groove structures 423 are provided respectively).

[0071] The positions of each vibration-absorbing groove structure 423 can be accurately matched with the vibration-absorbing holes 414. In this way, the water flow in the water outlet pipe 110 can flow directly into the vibration-absorbing groove structure 423 after passing through the vibration-absorbing holes 414.

[0072] Alternatively, the vibration-absorbing groove structure 423 can also be offset from the vibration-absorbing hole 414. Please refer to [link / reference]. Figure 11 In this embodiment, the vibration-absorbing groove structure 423 is misaligned with the vibration-absorbing hole 414, and when the pressure relief valve plate 420 is in its natural state (i.e., the pressure relief valve plate 420 is not affected by fluid pressure and does not deform), the vibration-absorbing groove structure 423 and the vibration-absorbing hole 414 remain connected.

[0073] Specifically, please refer to Figure 10The pressure relief chamber shell 410 has a protruding portion 415 extending into the water outlet pipe 110. The high-pressure hole 412 and the vibration-absorbing hole 414 are opened on the protruding portion 415, and the high-pressure hole 412 and the vibration-absorbing hole 414 open toward the water inlet end of the water outlet pipe 110. On the protruding portion 415, the vibration-absorbing hole 414 is closer to the central axis of the water outlet pipe 110 than the high-pressure hole 412.

[0074] In this embodiment, the vibration-absorbing hole 414 is located on the side of the high-pressure hole 412 near the central axis of the water outlet pipe 110, and see [reference]. Figure 10 The vibration-absorbing groove structure 423 opens toward the water inlet end of the water outlet pipe 110.

[0075] Thus, in practical applications, when water flows into the pressure relief chamber 411 through the vibration-absorbing holes 414 and 412 in the outlet pipe 110, it facilitates the flow of water relatively close to the central axis in the outlet pipe 110 into the vibration-absorbing channel 4112 in the pressure relief chamber 411 through the vibration-absorbing holes 414, and further into and impacts the vibration-absorbing groove structure 423; at the same time, it facilitates the flow of water relatively far from the central axis in the outlet pipe 110 into the pressure relief chamber 411 through the 412. When the kinetic energy of the water near the central axis in the outlet pipe 110 is relatively stronger, this arrangement facilitates the absorption of the vibration in the groove structure 423 to absorb the pulsation of the water flow in the outlet pipe 110.

[0076] Specifically, please refer to Figure 10 and Figure 11 The high-pressure port 412, the return port 413, and the vibration-absorbing port 414 are located at the bottom of the pressure relief chamber shell 410, and the pressure relief valve plate 420 is disposed near the inner bottom wall of the pressure relief chamber shell 410. Furthermore, see... Figure 12 and Figure 13 The pressure relief chamber shell 410 has an installation port 416 at its top. The pressure relief structure 400 includes a valve plate fixing structure 430 that is embedded into the pressure relief chamber 411 from the installation port 416. The valve plate fixing structure 430 has a support structure 431 protruding on the side facing the pressure relief valve plate 420. The support structure 431 has a first cavity structure 4311 and a second cavity structure 4312 (the first cavity structure 4311 and the second cavity structure 4312 may have annular walls) that open towards the pressure relief valve plate 420. The opening edges of the first cavity structure 4311 and the second cavity structure 4312 abut against the pressure relief valve plate 420 against the inner bottom wall of the pressure relief chamber shell 410. Along the top to bottom direction of the pressure relief chamber shell 410, the inner cavity of the first cavity structure 4311 covers the vibration absorption hole 414, and the inner cavity of the second cavity structure 4312 covers the high pressure hole 412 and the return hole 413.

[0077] The pressure relief valve plate 420 has a first side 421 facing the inner bottom wall of the pressure relief chamber shell 410 and a second side 422 opposite to the first side 421; after the valve plate fixing structure 430 is embedded in the pressure relief cavity 411, the support structure 431 can press a local area of ​​the second side 422 of the pressure relief valve plate 420, thereby making the corresponding position on the first side 421 of the pressure relief valve plate 420 in close contact with the inner bottom wall of the pressure relief chamber shell 410.

[0078] Specifically, after the first cavity structure 4311 on the support structure 431 abuts against the pressure relief valve plate 420, the pressure relief valve plate 420 can close the opening of the first cavity structure 4311. Along the top to bottom direction of the pressure relief chamber shell 410, the vibration-absorbing groove structure 423 on the pressure relief valve plate 420 and the vibration-absorbing hole 414 on the pressure relief chamber shell 410 are both covered by the inner cavity of the first cavity structure 4311. In the portion of the pressure relief valve plate 420 covered by the inner cavity of the first cavity structure 4311, a vibration-absorbing flow channel 4112 is defined between the first side 421 of the pressure relief valve plate 420 and the inner bottom wall of the pressure relief chamber shell 410. After water flows from the outlet pipe 110 through the vibration-absorbing hole 414 into the vibration-absorbing flow channel 4112, the pressure relief valve plate 420 (especially the vibration-absorbing groove structure 423 on the pressure relief valve plate 420) in the vibration-absorbing flow channel 4112 can bulge and deform toward the inner cavity of the first cavity structure 4311. The opening edge of the first cavity structure 4311 with an annular wall presses the pressure relief valve plate 420 against the inner bottom wall of the pressure relief chamber shell 410, which facilitates the sealing of the vibration absorption channel 4112 in the pressure relief chamber 411.

[0079] Specifically, after the second cavity structure 4312 on the support structure 431 abuts against the pressure relief valve plate 420, the pressure relief valve plate 420 can close the opening of the second cavity structure 4312. Along the top to bottom direction of the pressure relief chamber shell 410, both the high pressure hole 412 and the return hole 413 on the pressure relief chamber shell 410 are covered by the inner cavity of the second cavity structure 4312. When water flows from the outlet pipe 110 through the high pressure hole 412 into the pressure relief chamber 411, and the pressure of the water flow reaches a certain level, the part of the pressure relief valve plate 420 covered by the inner cavity of the second cavity structure 4312 can bulge and deform towards the inner cavity of the second cavity structure 4312, so that the pressure relief channel 4111 appears, allowing the water flowing into the pressure relief chamber 411 through the high pressure hole 412 to connect to the return hole 413. When the pressure relief channel 4111 appears, the opening edge of the second cavity structure 4312 with an annular wall presses the pressure relief valve plate 420 against the inner bottom wall of the pressure relief chamber shell 410, which facilitates the sealing of the pressure relief channel 4111 in the pressure relief chamber 411.

[0080] In this embodiment, the first cavity structure 4311 and the second cavity structure 4312 are disposed close to each other and their annular walls are connected. On the pressure relief valve plate 420, the portion between the portion corresponding to the pressure relief channel 4111 and the portion corresponding to the vibration absorption channel 4112 is clamped by the support structure 431 and the inner bottom wall of the pressure relief chamber shell 410. When the pressure relief valve plate 420 in the vibration absorption channel 4112 elastically deforms, the portion of the pressure relief valve plate 420 that is deformed is not easily affected by the portion of the pressure relief valve plate 420 corresponding to the pressure relief channel 4111.

[0081] Understandably, please refer to Figure 10 , Figure 12 and Figure 13 An elastic element 432 is provided between the valve plate fixing structure 430 and the pressure relief valve plate 420. The elastic element 432 includes a spring and caps covering both ends of the spring. The elastic element 432 is provided corresponding to the return hole 413. An adjustable pressure regulating element 433 is provided through the side of the valve plate fixing structure 430 facing away from the elastic element 432. The pressure regulating element 433 can be a bolt threaded through the top of the valve plate fixing structure 430. One end of the pressure regulating element 433 passing through the valve plate fixing structure 430 abuts against the elastic element 432. By adjusting the degree to which the pressure regulating element 433 is screwed into the valve plate fixing structure 430, the water pressure threshold of the water in the outlet pipe 110 can be adjusted to flow back to the inlet chamber 120 through the high pressure hole 412-pressure relief chamber 411 (pressure relief channel 4111)-return hole 413.

[0082] It is understandable that after the valve plate fixing structure 430 is embedded into the pressure relief chamber 411 through the mounting port 416, the valve plate fixing structure 430 can be connected to the pump cover 100 by through bolts.

[0083] Understandably, the elastic element 432 can be installed in the inner cavity of the second cavity structure 4312.

[0084] Furthermore, the inner bottom wall of the depressurization chamber shell 410 has a partitioned protrusion 417, which surrounds a first enclosing region 4171 and a second enclosing region 4172 adjacent to each other on the inner bottom wall of the depressurization chamber shell 410; the first enclosing region 4171 is correspondingly arranged with the opening of the first cavity structure 4311, and the second enclosing region 4172 is correspondingly arranged with the opening of the second cavity structure 4312. The vibration absorption hole 414 is located in the first enclosing region 4171, and the high-pressure hole 412 and the return hole 413 are located in the second enclosing region 4172.

[0085] Please see Figure 10 , Figure 12 and Figure 14The partition protrusion 417 is provided at the opening edges of the first cavity structure 4311 and the second cavity structure 4312. In this way, after the support structure 431 is embedded in the pressure relief cavity 411, the partition protrusion 417 and the support structure 431 can jointly clamp the corresponding parts on the pressure relief valve plate 420, and the part on the pressure relief valve plate 420 corresponding to the pressure relief channel 4111 and the part corresponding to the vibration absorption channel 4112 are not easily involved with each other.

[0086] Furthermore, to enhance the sealing effect between the first side 421 edge of the pressure relief valve plate 420 and the inner bottom wall of the pressure relief chamber shell 410, this application provides that the first side 421 edge of the pressure relief valve plate 420 (i.e. the side of the pressure relief valve plate 420 facing the partition protrusion 417) has a valve plate sealing protrusion 425 that can be sleeved on the outside of the partition protrusion 417.

[0087] Please see Figure 11 When the pressure relief valve plate 420 is installed in the pressure relief chamber 411, the valve plate sealing protrusion 425 on the edge of the first side 421 of the pressure relief valve plate 420 can be sleeved on the outside of the partition protrusion 417, so that the valve plate sealing protrusion 425 and the partition protrusion 417 form a nested structure, which facilitates the sealing connection between the edge of the first side 421 of the pressure relief valve plate 420 and the inner bottom wall of the pressure relief chamber shell 410.

[0088] Specifically, in this embodiment, the inner bottom wall of the depressurization chamber shell 410 may also be provided with a groove for the valve plate sealing protrusion 425 to be embedded on the outer side of the partition protrusion 417.

[0089] Please see Figure 15 In this embodiment, the top of the bladder structure 424 has a supporting protrusion 4241, which can abut against the valve plate fixing structure 430 under water pressure, thereby preventing the bladder structure 424 from excessively bulging and deforming. Furthermore, two bladder structures 424 are provided, with a connecting rib 4242 between them. The connecting rib 4242 can prevent excessive deformation of the bladder structure 424 and can also enhance the elastic stiffness of the pressure relief valve plate 420 wall between the two bladder structures 424, preventing excessive deformation of the pressure relief valve plate 420 wall between the two bladder structures 424. The outer periphery of the bladder structure 424 is also provided with reinforcing protrusions 4243 to enhance the elastic stiffness of the bladder structure 424.

[0090] Specifically, please refer to the following: Figures 17 to 20The diaphragm pump body 800 further includes a pump chamber structure 500 connected to the inlet chamber 120 and the outlet pipe 110. The pump chamber structure 500 includes a diaphragm 520, a pump chamber valve structure 530, and a transmission structure 540. The diaphragm 520 and the pump chamber valve structure 530 are fitted together and clamp multiple pump chambers. Each pump chamber is connected to the inlet chamber 120 and the outlet pipe 110 through the pump chamber valve structure 530. The transmission structure 540 is used to drive the diaphragm 520 to deform, thereby changing the volume of each pump chamber. In this embodiment, a support bracket 510 is also provided on the side of the diaphragm 520 facing away from the pump chamber valve structure 530. The support bracket 510 is used to support a local area of ​​the diaphragm 520 (i.e., the part on the diaphragm 520 corresponding to the inner edge area of ​​each pump chamber). The functions and arrangements of the pump chamber valve structure 530, diaphragm 520, support bracket 510 and transmission structure 540 are conventional technical means in the field of diaphragm booster pumps. This application will not elaborate on the conventional arrangement of the pump chamber valve structure 530, diaphragm 520, support bracket 510 and transmission structure 540.

[0091] Unlike conventional technology, the diaphragm 520 has multiple inverted structures 521 integrally formed on the side facing away from the pump chamber valve structure 530 at each corresponding pump chamber; the transmission structure 540 is disposed on the side of the diaphragm 520 facing away from the pump chamber, and the transmission structure 540 has multiple hollow sleeves 541 corresponding to each inverted structure 521. The sleeves 541 are used to fit on the outside of the inverted structure 521 and engage with the inverted structure 521.

[0092] For example, the inverted structure 521 may have an outwardly extending hook 5213, and the sleeve 541 may have a corresponding engaging protrusion 5411 inside the sleeve 541, so that the inverted structure 521 and the sleeve 541 can be engaged inside the sleeve 541. Since the inverted structure 521 and the diaphragm 520 are integrally formed, it is obvious that the side of the diaphragm 520 facing the pump cavity, that is, the water-contact side of the diaphragm 520, does not need to have an opening, and the water-contact side of the diaphragm 520 has a complete surface. During the process of the diaphragm 520 being driven and deformed by the transmission structure 540, water is not easily leaked from the water-contact side of the diaphragm 520 to the back water side.

[0093] Furthermore, each of the inverted structures 521 includes a first part 5211 and a second part 5212 spaced apart; the transmission structure 540 is detachably connected to a reinforcement member 550 on the side facing away from the diaphragm sheet 520, and the reinforcement member 550 is provided with a plurality of wedges 551 corresponding to each of the sleeves 541.

[0094] Thus, when the transmission structure 540 is connected to the diaphragm 520 and the reinforcement 550 is connected to the transmission structure 540, each wedge 551 is inserted into the corresponding sleeve 541, and is inserted into the first part 5211 and the second part 5212 of each set of corresponding sleeves 541; the wedge 551 is used to keep the first part 5211 and the second part 5212 relatively spread apart, so that the first part 5211 and the second part 5212 can be relatively close to the inner wall of the sleeve 541 (i.e., the inner side of the snap-fit ​​protrusion 5411), and the snap-fit ​​protrusion 5411 and the wedge 551 together clamp the first part 5211 and the second part 5212, strengthening the connection and fastening of the buckle structure 521 on the transmission structure 540; at the same time, the mutual limiting of the hook 5213 and the snap-fit ​​protrusion 5411 on the buckle structure 521 and the sleeve 541 is also more stable.

[0095] Please see Figure 2a The diaphragm pump body 800 of this application also includes a power base 630. The pump cover 100 is connected to the power base 630 through the pump cavity structure 500. The pump cavity structure 500 is circumferentially spaced with a plurality of bolts that can be further connected to the power base 630. The power base 630 is provided with a plurality of threaded holes circumferentially spaced in correspondence with the bolts.

[0096] Thus, by connecting the bolts on the pump chamber structure 500 to threaded holes at different positions on the power base 630 (i.e., rotating the pump chamber structure 500), the pump chamber structure 500 can have different installation angles on the power base 630. As the installation angle of the pump chamber structure 500 on the power base 630 changes, the orientation of the inlet 121 and outlet 111 on the pump cover 100 will change accordingly. To facilitate reversing the orientation of the inlet 121 and outlet 111 on the pump cover 100 (i.e., rotating the pump chamber structure 500 180°), optionally, this application provides a pump chamber structure 500 with a plurality of evenly distributed bolts evenly spaced circumferentially to connect to corresponding threaded holes on the power base 630. The calculation formula is as follows: When the number of pump chambers in the diaphragm booster pump is odd, with n as the number of pump chambers, the number of connecting bolts for the pump chamber structure 500 is 2n; with α as the angle between adjacent bolts, α = (360°) / 2n.

[0097] Specifically, please refer to Figures 1 to 5 , Figure 13In this embodiment, both the inlet 121 and the outlet 111 on the pump cover 100 can be connected to a plug-in connector 130; the plug-in connector 130 has multiple annular grooves 131 at one end of the plug-in connector 130 that is inserted into the inlet 121 or the outlet 111, and each annular groove 131 can be used to install a sealing ring; and at least one annular groove 131 on a plug-in connector 130 is left empty.

[0098] Taking the inlet 121 as an example, the pump cover 100 has two locking interfaces 133 on the outer shell of the inlet 121. After the corresponding connector 130 is inserted into the inlet 121, this embodiment also provides a U-shaped locking pin 132. The two ends of the U-shaped locking pin 132 can be partially inserted into the inlet 121 through the corresponding two locking interfaces 133, and then embedded into the annular groove 131 left on the connector 130 in the inlet 121, and locking the corresponding connector 130 to prevent the connector 130 from detaching from the inlet 121. The connector 130 at the outlet 111 is similar and will not be described in detail here. After the insertion pipe connector 130 at the outlet 111 is inserted into the outlet 111, it can press the first outward protrusion 332 on the porous pipe 330 against the inner wall of the outlet pipe 110. In this way, the stepped gradually expanding structure in the outlet pipe 110 and the insertion pipe connector 130 cooperate to facilitate the installation of the vibration absorption pipe assembly.

[0099] Understandably, in this embodiment, both the outlet 111 and the inlet 121 have a stepped, gradually expanding structure with an inner diameter that gradually increases from the inside out, corresponding to the insertion end of the connector 130. The insertion end of the connector 130 can be inserted into the first stage 134 of the stepped, gradually expanding structure from the outside in, and is engaged with the end face of the second stage 135 from the outside in. This avoids over-insertion of the connector 130, making insertion of the connector 130 more convenient.

[0100] Understandably, the plug-in connector 130 may have a bent section and be L-shaped. The plug-in connector 130 can be rotated after being inserted into the inlet 121 or the outlet 111 to meet the need to connect the inlet 121 and the outlet 111 of the diaphragm booster pump to external pipes in different directions.

[0101] Secondly, a water purifier is also provided, including a water purifier body, wherein a diaphragm booster pump as described above is installed inside the water purifier body, and a pump fixing structure 700 for fixing the diaphragm booster pump is provided on the water purifier body.

[0102] The pump fixing structure 700 includes a pump fixing plate 710 and a clamp 720; the diaphragm booster pump abuts against the pump fixing plate 710, and the two ends of the clamp 720 are detachably connected to the pump fixing plate 710 so as to clamp the diaphragm booster pump to the pump fixing plate 710. A vibration damping soft rubber pad 721 for abutting against the diaphragm booster pump is provided on the side of the clamp 720 near the diaphragm booster pump.

[0103] Please see Figure 1 and Figure 16 In this embodiment, the first end of the clamp 720 is bolted to the pump mounting plate 710, and the second end of the clamp 720 is bent to form a U-shaped hook 722. The pump mounting plate 710 has two hanging interfaces 711 corresponding to the second end of the clamp 720. When fixing the diaphragm booster pump (i.e., the diaphragm pump body 800) through the pump fixing structure 700, the diaphragm booster pump is placed on the pump mounting plate 710, and the clamp 720 is used to press the diaphragm booster pump tightly against the pump mounting plate 710. At this time, the two ends of the clamp 720 are respectively located on both sides of the diaphragm booster pump. The first end of the clamp 720 is bolted to the pump mounting plate 710, and the second end of the clamp 720 passes through the hanging interface 711 on the pump mounting plate 710 that is relatively far away from the diaphragm booster pump and the hanging interface 711 that is relatively close to the diaphragm booster pump in sequence to form a hook 722, thus completing the connection of the second end of the clamp 720 on the pump mounting plate 710.

[0104] The clamp 720 has a vibration-damping soft rubber pad 721 on the side near the diaphragm booster pump for abutting against the side of the diaphragm booster pump. The vibration-damping soft rubber pad 721 can be a rectangular strip and can be made of rubber, silicone or other elastic materials. The vibration-damping soft rubber pad 721 can reduce the rigid contact between the diaphragm booster pump and the pump mounting plate 710 and can absorb some vibration.

[0105] Further, please refer to Figure 2a In this embodiment, the diaphragm booster pump is provided with a power base 630 at the bottom of the pump chamber structure 500. The power base 630 is used to drive the pump chamber structure 500 to change the volume of each pump chamber. The power base 630 includes a motor assembly base 600 and a motor base fixing cover 610 disposed on the top of the motor assembly base 600. The motor base fixing cover 610 has locking screw holes 611 on its periphery. The pump fixing plate 710 is provided with locking bolts 712 corresponding to the locking screw holes 611. A first soft rubber pad 620 is sandwiched between the motor base fixing cover 610 and the motor assembly base 600.

[0106] Please see Figure 2a , Figure 2b and Figure 16On the pump mounting plate 710, a locking bolt 712 passes through the pump mounting plate 710 from the side away from the diaphragm booster pump and is inserted into the locking screw hole 611 on the motor base mounting cover 610 from the side of the diaphragm booster pump, so that the pump mounting plate 710 is fixedly connected to the motor base mounting cover 610, and further fixedly connected to the power base 630 (that is, fixedly connected to the diaphragm booster pump).

[0107] Preferably, the diaphragm booster pump in this embodiment has a cylindrical outer wall, so the outer wall of the motor base fixing cover 610 is also cylindrical. Two locking bolts 712 are provided on the pump fixing plate 710. The two locking bolts 712 can be inserted into two corresponding locking screw holes 611 on the motor base fixing cover 610, and the two corresponding locking screw holes 611 are located at different positions on the circumferential side of the motor base fixing cover 610. In this way, it is beneficial to fix the diaphragm booster pump to the pump fixing plate 710 and prevent the power base 630 (i.e., the diaphragm booster pump) from rotating on the pump fixing plate 710. It can be understood that the pump fixing plate 710 has a groove for the power base 630 to be inserted laterally. The groove makes the contact surface between the pump fixing plate 710 and the power base 630 larger and the support more stable. The two locking bolts 712 penetrate the pump fixing plate 710 through the groove.

[0108] Please see Figure 1 and Figure 2a The clamp 720 presses the lower end of the motor assembly seat 600 against the pump mounting plate 710, and the locking bolt 712 fixes the motor seat mounting cover 610 to the pump mounting plate 710. The clamp 720 and the locking bolt 712 can respectively fix the upper and lower ends of the power base 630 to the pump mounting plate 710.

[0109] Specifically, the pump chamber structure 500 is fixedly connected to the top of the motor mount cover 610. During the operation of the diaphragm booster pump, the first soft rubber pad 620 can absorb the vibration generated on the motor assembly mount 600 through elastic deformation, reducing the rigid transmission of vibration from the motor assembly mount 600 to the motor mount cover 610, and thus reducing the rigid transmission of vibration from the motor mount cover 610 to the pump chamber structure 500. Since the pump chamber structure 500 and the pump cover 100 are usually connected by screws (i.e., rigid connection), reducing the rigid transmission of vibration from the motor assembly mount 600 to the pump chamber structure 500 also reduces the rigid transmission of vibration from the motor assembly mount 600 to the pump cover 100. In this way, the possibility of resonance and vibration coupling between the components on the motor assembly mount 600, the pump chamber structure 500, and the pump cover 100 is reduced, which helps to avoid noise generation.

[0110] When assembling the power base 630, the motor mount fixing cover 610 and the motor assembly base 600 can be connected by bolts. Furthermore, the first soft rubber pad 620 can be installed directly by clamping the motor mount fixing cover 610 and the motor assembly base 600, making the installation of the first soft rubber pad 620 convenient.

[0111] It is understandable that a motor is installed inside the motor assembly base 600, and a motor shaft protrudes from one end of the motor assembly base 600 facing the pump chamber structure 500; the motor shaft passes through the motor base fixing cover 610 and is connected to the transmission structure 540.

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A diaphragm booster pump, characterized in that, The pump includes a diaphragm pump body, which includes a pump cover having an inlet chamber for water supply and an outlet pipe. The inlet chamber is provided with a first elastic energy-absorbing structure, and the outlet pipe is provided with a second elastic energy-absorbing structure; the first elastic energy-absorbing structure and / or the second elastic energy-absorbing structure have an elastic airbag structure that can generate volume changes under water pressure.

2. The diaphragm booster pump as described in claim 1, characterized in that, The first elastic energy-absorbing structure includes a mounting chamber structure and an elastic gasket; The mounting chamber structure has a cavity that opens toward the water inlet chamber, and the elastic gasket is disposed in the mounting chamber structure to close the opening of the cavity; the mounting chamber structure is also connected to a mounting member for pressing the elastic gasket against the mounting chamber structure.

3. The diaphragm booster pump as described in claim 1, characterized in that, The second elastic energy-absorbing structure includes a vibration-absorbing tube assembly embedded in the water outlet pipe; the vibration-absorbing tube assembly has a water supply pipe. The outer sides of both ends of the vibration-absorbing tube assembly are sealed to the inner side of the water outlet pipe. The outer wall of the vibration-absorbing tube assembly is spaced apart from the inner wall of the water outlet pipe to define a closed air cavity. A local area on the vibration-absorbing tube assembly can elastically deform under the water pressure in the pipeline, and the volume of the closed air cavity changes through the elastic deformation of the vibration-absorbing tube assembly.

4. The diaphragm booster pump as described in claim 3, characterized in that, The vibration-absorbing tube assembly includes an elastic rubber sleeve and a porous tube; the porous tube has multiple through holes that extend through both the inside and outside; the elastic rubber sleeve is fitted onto the outside of the porous tube; and the inner sides of both ends of the elastic rubber sleeve and the outer sides of both ends of the porous tube are sealed together. The outer wall of the elastic sleeve and the inner wall of the water outlet pipe are spaced apart to form the closed air cavity. The elastic sleeve can elastically deform under the water pressure in the pipeline, thereby changing the volume of the closed air cavity.

5. The diaphragm booster pump as described in claim 4, characterized in that, An acoustic damping ring is provided inside the porous tube, and each of the through holes is distributed on the porous tube at the upstream and downstream positions corresponding to the acoustic damping ring.

6. The diaphragm booster pump according to any one of claims 1-5, characterized in that, The pump cover has a pressure relief structure, which includes a pressure relief chamber shell, and the pressure relief chamber shell has a pressure relief cavity inside; the bottom of the pressure relief chamber shell is provided with a high pressure hole, a return hole and a vibration absorption hole; the high pressure hole and the vibration absorption hole are connected to the water outlet pipe, and the return hole is connected to the water inlet cavity; The pressure relief chamber is equipped with a pressure relief valve plate made of elastic material, which is disposed close to the inner bottom wall of the pressure relief chamber shell. In its natural state, the pressure relief valve plate blocks the high-pressure hole and the return hole from communicating through the pressure relief chamber. However, the pressure relief valve plate can elastically deform to allow the high-pressure hole and the return hole to communicate through the pressure relief chamber. The vibration absorption hole is isolated from the high-pressure hole and the return hole within the pressure relief chamber. The pressure relief valve plate has a first side facing the inner bottom wall of the pressure relief chamber shell and a second side relative to the first side. The pressure relief valve plate has a vibration-absorbing groove structure on the first side. Inside the pressure relief chamber, the vibration-absorbing hole communicates with the vibration-absorbing groove structure. The pressure relief valve plate has a bulging bladder structure on the second side, and the inner cavity of the bladder structure opens on the first side to define the vibration-absorbing groove structure.

7. The diaphragm booster pump according to any one of claims 1-5, characterized in that, The diaphragm pump body also includes a pump chamber structure connected to the inlet chamber and the outlet pipe. The pump chamber structure includes a diaphragm, a pump chamber valve structure and a transmission structure. The diaphragm and the pump chamber valve structure are covered and clamped together to form multiple pump chambers. The transmission structure is used to drive the diaphragm to deform so that the volume of each pump chamber changes. The diaphragm sheet has multiple inverted buckle structures integrally formed on the side facing away from the pump chamber valve structure at each corresponding pump chamber; the transmission structure is disposed on the side of the diaphragm sheet facing away from the pump chamber, and the transmission structure has multiple hollow sleeves corresponding to each inverted buckle structure, the sleeves being used to be sleeved on the outside of the inverted buckle structure and to engage the inverted buckle structure. Each of the aforementioned inverted structures includes a first part and a second part spaced apart; the transmission structure is detachably connected to a reinforcing member on the side facing away from the diaphragm, and the reinforcing member is provided with multiple wedges corresponding to each of the aforementioned sleeves; When the transmission structure is connected to the diaphragm and the reinforcement is connected to the transmission structure, each wedge is inserted into the corresponding sleeve and inserted into the space between the first and second parts of each set of sleeves. The wedge is used to keep the first part and the second part relatively spread apart.

8. A water purifier, characterized in that, The water purifier includes a main body, which is equipped with a diaphragm booster pump as described in any one of claims 1-7, and the main body is provided with a pump fixing structure for fixing the diaphragm booster pump. The pump fixing structure includes a pump fixing plate and a clamp; the diaphragm booster pump abuts against the pump fixing plate, and the two ends of the clamp are detachably connected to the pump fixing plate so that the diaphragm booster pump can be clamped to the pump fixing plate. A vibration damping soft rubber pad for abutting against the diaphragm booster pump is provided on the side of the clamp near the diaphragm booster pump.

9. The water purifier as described in claim 8, characterized in that, The hoop has a first end and a second end connected to the pump mounting plate; The first end is abutted against the pump mounting plate by through bolts; Two hanging interfaces are provided on the pump fixing plate corresponding to the second end. The second end of the hoop bar forms a hook by passing through the two hanging interfaces in sequence, and the hoop bar is hooked to the two hanging interfaces on the pump fixing plate through the hook.

10. The water purifier as described in claim 8, characterized in that, The diaphragm booster pump includes a pump chamber structure connected to the inlet chamber and the outlet pipe, and the pump chamber structure has multiple pump chambers; the diaphragm booster pump is provided with a power base at the bottom of the pump chamber structure, and the power base is used to drive the pump chamber structure to change the volume of each pump chamber; The power base includes a motor assembly base and a motor base fixing cover disposed on the top of the motor assembly base. The motor base fixing cover has locking screw holes on its periphery, and the pump fixing plate is provided with locking bolts corresponding to the locking screw holes. A first soft rubber pad is sandwiched between the motor mount fixing cover and the motor assembly mount.

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