CN215719392U - Booster pump and water purifier - Google Patents

Abstract

The utility model discloses a booster pump and a water purifier. Wherein, the base is provided with an actuating hole; the pressure boosting membrane is installed on the base, the pressure boosting membrane is provided with a portion covering the actuating hole, and a membrane pressure applying platform is convexly arranged on the lower surface of the actuating portion. The actuating component comprises an actuating wheel which is movably arranged in the actuating hole along the up-down direction, the actuating wheel is provided with a connecting hole used for being connected with the actuating part, and a first sinking groove which is positioned on the periphery of the connecting hole and used for the film pressing platform to be inserted. The membrane sealing ring is arranged in the first sinking groove and is abutted by the membrane pressing platform to be fixed in the first sinking groove. The booster pump of the utility model provides a novel sealing mode for sealing the holes of the booster membrane so as to improve the sealing performance of the booster pump.

Description

Booster pump and water purifier

Technical Field

The utility model relates to the technical field of water purification equipment manufacturing, in particular to a booster pump and a water purifier.

Background

At present, a booster pump is generally disposed on a pipeline of a water purifier on the market, and the booster pump mainly drives an actuating wheel of an actuating assembly to inflate a booster membrane, so that the volume of a booster cavity above the booster membrane is changed, the pressure of the booster cavity is changed, and the booster pump boosts and conveys fluid. The booster film of the conventional booster pump is usually covered on the actuating hole of the base, and then the booster film is connected and fixed with the actuating wheel in the actuating hole through the fixing component, so that the actuating wheel drives the booster pump. However, voids are often formed at the connection position between the pressurizing membrane and the actuating wheel, and water in the pressurizing chamber is easily leaked from the voids to the actuating hole and then falls onto the driving component from the actuating hole, resulting in a short circuit and other failures of the driving component.

Therefore, the booster pump needs to be sealed at the connection position of the booster membrane and the actuator wheel. The traditional sealing mode is that a sealing convex rib is convexly arranged on the surface of the actuating wheel, which is contacted with the pressurizing film, and the sealing convex rib surrounds the periphery of the connecting position of the actuating wheel and the pressurizing film, and then the actuating wheel and the pressurizing film are clamped tightly through the cooperation of a fixing component and an actuating support of an actuating component, so that the sealing convex rib on the actuating wheel is attached to the lower surface of the pressurizing film to seal the hole between the actuating wheel and the pressurizing film. However, the sealing ribs on the actuator wheel are difficult to adhere well to the lower surface of the pressurizing film, so that the gap between the pressurizing film and the actuator wheel is difficult to seal, and water leakage is likely to occur.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a booster pump and a water purifier, and aims to provide a novel sealing mode for sealing a gap of a booster membrane so as to improve the sealing performance of the booster pump.

In order to achieve the purpose, the utility model provides a booster pump and a water purifier. Wherein, the base is provided with an actuating hole; the pressurizing film is arranged on the base and provided with an actuating part covering the actuating hole, and a film pressing platform is convexly arranged on the lower surface of the actuating part; the actuating component comprises an actuating wheel which is movably arranged in the actuating hole along the up-down direction, the actuating wheel is provided with a connecting hole used for being connected with the actuating part, and a first sinking groove which is positioned on the periphery of the connecting hole and used for the film pressing platform to be inserted. The membrane sealing ring is arranged in the first sinking groove and is abutted by the membrane pressing platform to be fixed in the first sinking groove.

Optionally, the membrane sealing ring has a lower annular plane and an upper annular plane arranged in the up-down direction; the lower annular plane is attached to the bottom surface of the first sinking groove; the upper annular plane is attached to the bottom surface of the film pressing table.

Optionally, the membrane sealing ring further has an outer ring circumferential surface located at an outer periphery thereof and connecting the lower annular plane and the upper annular plane, and the outer ring circumferential surface is attached to the side wall of the first sink groove.

Optionally, the diameter of the outer ring peripheral surface of the membrane sealing ring is larger than the inner diameter of the first sinking groove, so that the outer ring peripheral surface is in interference fit with the side wall of the first sinking groove.

Optionally, a gap is formed between the side wall of the first sink groove and the outer circumferential surface of the film pressing table at an interval, the gap being adapted to fit the deformed portion of the film seal ring.

Optionally, the film pressing table is disposed in a truncated cone shape to form the gap between an outer circumferential surface of a lower end of the film pressing table and a sidewall of the first sink.

Optionally, a pressing rib is convexly arranged on the bottom surface of the film pressing table, the pressing rib is annularly arranged, and the pressing rib abuts against the upper annular plane.

Optionally, a thickness of the membrane seal ring between the lower annular plane and the upper annular plane is less than a depth of the first sink groove.

Optionally, a ratio of the depth of the first sinking groove to the height of the film pressing platform in a protruding manner is greater than or equal to 0.6 and less than or equal to 0.7.

Optionally, a second sinking groove is further formed in the top of the actuating wheel, and a film positioning table embedded into the second sinking groove is convexly arranged on the lower surface of the actuating part; the actuating wheel is arranged on the bottom surface of the second sinking groove in a concave mode to form the first sinking groove; the actuating part is convexly arranged on the bottom surface of the film positioning table to form the film pressing table.

Optionally, the booster pump further comprises a fixing assembly for connecting the actuating wheel and the actuating part, and the fixing assembly comprises a fixing block and a connecting piece; wherein the fixed block is arranged on the actuating part; the connecting piece penetrates through the fixed block, the actuating part and the actuating wheel to connect and fix the three parts.

Optionally, a fixing convex ring is convexly arranged on the lower surface of the fixing block; the actuating part is provided with a fixing groove for matching the fixing convex ring; and/or one of the fixed block and the corresponding actuating part is provided with a fixed protrusion, and the other one is provided with a fixed hole for matching the fixed protrusion.

The utility model also provides a water purifier which comprises a booster pump, wherein the booster pump comprises a base, a booster membrane, an actuating assembly and a membrane sealing ring. The base is provided with an actuating hole. The pressure boost membrane install in on the base, the pressure boost membrane is provided with the cover the portion of actuating the hole, the lower surface protruding membrane that is equipped with of portion of actuating presses the platform. The actuating assembly comprises an actuating wheel which is movably arranged in the actuating hole along the up-down direction, the actuating wheel is provided with a connecting hole used for being connected with the actuating part, and a first sinking groove which is positioned on the periphery of the connecting hole and used for the film pressing platform to be inserted. The membrane sealing ring is arranged in the first sinking groove and is abutted by the membrane pressing platform to be fixed in the first sinking groove.

According to the technical scheme, a first sinking groove is formed in an actuating wheel, a membrane sealing ring is arranged in the first sinking groove, a membrane pressing platform is arranged at the joint of an actuating part of a pressurizing membrane and the actuating wheel, the membrane pressing platform is used for abutting against the membrane sealing ring to enable the membrane sealing ring to be fixed in the first sinking groove, the membrane sealing ring is elastically deformed along the radial direction under the action force exerted by the membrane pressing platform, so that the upper surface and the lower surface of the membrane sealing ring are radially expanded to obtain a large surface area, the upper surface and the lower surface of the membrane sealing ring are respectively tightly attached to the lower surface of the pressurizing membrane and the bottom surface of the first sinking groove of the actuating wheel, and the attachment area is large; and the peripheral face of the membrane sealing ring can be attached to the side wall of the first sinking groove due to deformation, so that the contact sealing area of the membrane sealing ring and the pressurizing membrane and the actuating wheel is effectively increased, the gap of the pressurizing membrane is effectively sealed, and the sealing performance of the pressurizing pump is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram illustrating an internal structure of a booster pump according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic view of the assembly of the pressurizing membrane and the actuating element in FIG. 1;

FIG. 4 is a schematic view of the fixing assembly of FIG. 1 before being assembled with the pressurizing film and the actuator wheel;

FIG. 5 is a schematic view of the fixing assembly of FIG. 1 assembled with a pressurizing film and an actuator wheel;

FIG. 6 is an enlarged view at C of FIG. 5;

FIG. 7 is a cross-sectional view of the membrane seal ring of FIG. 5;

FIG. 8 is an exploded view of an embodiment of the booster pump of the present invention;

FIG. 9 is a schematic view of the housing bracket of the base of FIG. 8;

FIG. 10 is a schematic view of the actuator assembly shown in FIG. 8;

FIG. 11 is a schematic view of the actuating assembly shown in FIG. 10 from another perspective;

FIG. 12 is a schematic view of the pressurized membrane of FIG. 8;

FIG. 13 is a schematic view of the pressurized film of FIG. 12 from another perspective;

FIG. 14 is a cross-sectional view of the pressurized membrane of FIG. 12 taken in a plane perpendicular to its upper surface;

FIG. 15 is a schematic illustration of the piston cap of FIG. 8;

FIG. 16 is a schematic view of a fixing block of the fixing assembly of FIG. 8;

fig. 17 is a structural view of another view of the fixing block of fig. 16;

fig. 18 is a schematic view showing a sealing structure between a pressurizing membrane and an actuator wheel of the conventional pressurizing pump.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In a water purifier on the market, a booster pump is generally disposed on a pipeline of the water purifier, and the booster pump mainly drives an actuating wheel of an actuating assembly to inflate a booster membrane, so that the volume of a booster cavity above the booster membrane is changed, and the pressure of the booster cavity is changed, thereby boosting and conveying fluid. The booster film of the conventional booster pump is usually covered on the actuating hole of the base, and then the booster film is connected and fixed with the actuating wheel in the actuating hole through the fixing component, so that the actuating wheel drives the booster pump. However, voids are often formed at the connection position between the pressurizing membrane and the actuating wheel, and water in the pressurizing chamber is easily leaked from the voids to the actuating hole and then falls onto the driving component from the actuating hole, resulting in a short circuit and other failures of the driving component. Therefore, the booster pump needs to be sealed at the connection position of the booster membrane and the actuator wheel.

Referring to fig. 18, in the conventional sealing method, a sealing rib 228 is convexly disposed on a surface of the actuating wheel 220 contacting the pressurizing membrane 300, the sealing rib 228 surrounds a circumference of a connecting hole between the actuating wheel 220 and the pressurizing membrane 300, the actuating wheel 220 and the pressurizing membrane 300 are clamped by matching a fixing block 410 of a fixing assembly 400 and an actuating bracket 210 of an actuating assembly 200, and the actuating wheel 220 and the pressurizing membrane 300 are fixedly connected by a connecting member 420 of the fixing assembly 400, so that the sealing rib 228 on the actuating wheel 220 is attached to a lower surface of the pressurizing membrane 300, thereby sealing a gap between the actuating wheel 220 and the pressurizing membrane 300.

However, this sealing method has at least two disadvantages, one of which is that the pressurizing film 300 is limited by its material and has a larger hardness, and is not easily compressed by the sealing rib 228, so that it cannot completely fit with the sealing rib 228; another drawback is that relative movement between the two is inevitable during the pumping of the pressurized membrane 300 by the actuation pulley 220, so that the sealing bead 228 does not perfectly maintain the abutment with the pressurized membrane 300. This all can lead to the sealed effect of booster pump relatively poor, takes place the water leakage condition very easily, and then leads to the motor to appear trouble such as short circuit.

Accordingly, embodiments of a booster pump are provided that may be used in a water purifier or other water supply system requiring a boosted delivery. The booster pump can provide a novel sealing mode for sealing the gap of the booster membrane so as to improve the sealing performance of the booster pump and further reduce the water leakage of the booster pump.

Referring to fig. 1 to 3, in an embodiment of the booster pump of the present invention, the booster pump includes a base 100, a booster membrane 300, an actuating assembly 400, and a membrane sealing ring 350. The base 100 is provided with an actuating hole 127. The pressurizing film 300 is installed on the base 100, the pressurizing film 300 is provided with an actuating portion 310 covering the actuating hole 127, and a film pressurizing table 314 is protruded on the lower surface of the actuating portion 310. The actuating assembly 200 includes an actuating wheel 220 movably disposed in the actuating hole 127 in the up-down direction, the actuating wheel 220 is provided with a connecting hole 226 for connecting with the actuating portion 310, and a first sinking groove 223 (as shown in fig. 4) located on the circumference of the connecting hole 226 for inserting the film pressing platform 314. The membrane sealing ring 350 is disposed in the first sinking groove 223 and is held by the membrane pressing table 314 and fixed in the first sinking groove 223.

Specifically, the top surface of the base 100 is provided with a plurality of actuating holes 127 (as shown in fig. 9), and the actuating holes 127 are arranged at intervals in a ring shape. The actuating assembly 200 is installed in the base 100, the actuating assembly 200 is provided with a plurality of actuating wheels 220 (as shown in fig. 10 and 11), and the plurality of actuating wheels 220 are respectively arranged in the plurality of actuating holes 127 on the base 100 one by one, so that the actuating wheels 220 can swing up and down in the actuating holes 127. In order to reduce the number of the driving assemblies 900 used, optionally, the actuating assembly 200 further includes an actuating bracket 210 for connecting with the driving assemblies 900, the actuating bracket 210 is installed in the base 100, and a plurality of actuating wheels 220 are fixed on the actuating bracket 210 and are arranged at intervals along the upper periphery of the actuating bracket 210.

The pressurizing membrane 300 is installed on the top surface of the base 100, the pressurizing membrane 300 is provided with a plurality of actuating portions 310 (as shown in fig. 12 to 14), and the actuating portions 310 of the pressurizing membrane 300 are respectively covered on the actuating holes 127 of the base 100; each actuating portion 310 is fixedly connected to the actuating wheel 220 in the corresponding actuating hole 127. As for the number of the actuating portions 310 of the pressurizing membrane 300, it can be set as appropriate according to the number of the pressurizing chambers 301 required by the pressurizing pump, and is not limited herein. It should be noted that, the number of the actuating wheels 220 disposed on the actuating support 210 and the number of the actuating holes 127 of the base 100 for the actuating wheels 220 to pass through should be consistent with the number of the actuating portions 310 of the pressurizing film 300, so as to form a one-to-one correspondence relationship.

Specifically, the pressurizing membrane 300 is provided with five actuating portions 310, the five actuating portions 310 are arranged at intervals along a circumferential region of the pressurizing membrane 300, and the outer circumference of each actuating portion 310 is arranged in an arc shape, so that the pressurizing membrane 300 is arranged in a five-leaf petal shape. Correspondingly, the base 100 is provided with five actuating holes 127, and the five actuating holes 127 are annularly arranged at intervals; the actuating assembly 200 is provided with five actuating wheels 220, and the five actuating wheels 220 are respectively arranged in the five actuating holes 127 of the base 100 and are fixedly connected with the corresponding actuating portions 310 on the pressurizing film 300.

The booster pump further includes a piston cover 500 and a pump case 800; the piston cover 500 is mounted on the pressurizing membrane 300, the piston cover 500 is provided with a water outlet base 510 and a plurality of water inlet covers 520 (as shown in fig. 15) arranged around the water outlet base 510, and the plurality of water inlet covers 520 respectively cover the plurality of actuating portions 310 of the pressurizing membrane 300 to form a plurality of pressurizing chambers 301 in a surrounding manner. The pump housing 800 is mounted on the base 100 and covers the piston cover 500. The pump housing 800 is provided with an outlet cavity 801 and a plurality of inlet cavities 802 (shown in fig. 1) surrounding the outlet cavity 801.

The number of the water inlet caps of the piston cap 500 should also correspond to the number of the actuating portions 310 of the pressurizing membrane 300. Therefore, the piston cap 500 is provided with five water inlet caps 520, the five water inlet caps 520 are uniformly arranged along the circumference of the water outlet base 510 and are connected in sequence, and the five water inlet caps 520 are also connected with the water outlet base 510 into a whole. Looking down or looking up on the plunger cap 500, the plunger cap 500 can be seen to be in the shape of a five-lobed petal. The plurality of water inlet covers 520 of the piston cover 500 respectively correspond to the plurality of actuating portions 310 of the pressurizing membrane 300 one by one, and each water inlet cover 520 and the corresponding actuating portion 310 enclose to form one pressurizing cavity 501, so that the pressurizing pump has five pressurizing cavities 501 arranged along the same circumference. Each water inlet cover 520 is provided with a water inlet hole 522 communicated with the corresponding pressurizing cavity 501, and the inner side of the water inlet cover 520 is also provided with a water inlet valve 700 for opening and closing the water inlet hole 522; the water outlet base 510 is provided with a plurality of groups of water discharge holes 513, and the plurality of groups of water discharge holes 513 are respectively and correspondingly communicated with the plurality of pressurizing chambers 501; the outer side of the water outlet base 510 is also provided with a drain valve 600 for opening and closing the plurality of sets of drain holes 513. The drain valve 600 and the inlet valve 700 are both one-way valves, and are both opened and closed by pressure changes in the pressurizing chamber 501.

As shown in fig. 10 and 13, each of the actuating portion 310 of the pressurizing membrane 300 and the actuating wheel 220 of the actuating bracket 210 corresponding to the actuating portion 310 are provided with a connecting hole, and the connecting hole is suitable for the connecting member 420 of the fixing assembly 400 to pass through so as to connect and fix the actuating portion 310 and the actuating wheel 220. Correspondingly, a first sunken groove 223 is formed at the top of each actuating wheel 220, the first sunken groove 223 surrounds the periphery of the connecting hole 226 of the actuating wheel 220, and a membrane sealing ring 350 is arranged in the first sunken groove 223; the lower surface of each actuating portion 310 is convexly provided with a membrane pressing platform 314, and the membrane pressing platform 314 is inserted into the first sunken groove 223 of the actuating wheel 220 and abuts against the membrane sealing ring 350, so that the membrane sealing ring 350 is pressed and fixed in the first sunken groove 223.

Referring to fig. 4 to 6, after the film sealing ring 350 is mounted, the lower surface of the film sealing ring 350 is attached to the bottom surface of the first sinking groove 223, and the upper surface of the film sealing ring 350 is attached to the lower surface of the pressurizing film 300. The film sealing ring 350 is pressed by the film pressing table 314 of the pressurized film 300, so that the film sealing ring 350 can be elastically deformed along the radial direction under the pressing action force, the upper and lower surfaces of the film sealing ring 350 are expanded along the radial direction to obtain a large surface area, and the upper and lower surfaces of the film sealing ring 350 are respectively tightly attached to the lower surface of the pressurized film 300 and the bottom surface of the first sinking groove 223 of the actuating wheel 220, and the attachment area is large; in addition, the outer peripheral surface of the membrane sealing ring 350 is also attached to the side wall 225 of the first sinking groove 223 due to deformation, so that the contact sealing area of the membrane sealing ring 350, the pressurizing membrane 300 and the actuating wheel 220 is effectively increased, the gap of the pressurizing membrane 300 is effectively sealed, and the sealing performance of the pressurizing pump is greatly improved.

When the booster pump works, the actuating wheel 220 of the actuating assembly 200 drives the actuating part 310 fixed with the actuating wheel 220 on the booster membrane 300 to swell downwards (as shown in fig. 1 and 2), so that the volume of the booster cavity 501 corresponding to the actuating part 310 is increased to form negative pressure, and water is sucked into the booster cavity 501 from the water inlet cover 310; then, the actuating wheel 220 of the actuating assembly 200 continues to drive the actuating portion 310 to bulge upward, so that the volume of the pressurizing cavity 501 is reduced, the pressure of the water flow in the pressurizing cavity 501 is increased, and the high-pressure water is finally extruded and discharged from the pressurizing cavity 501, thereby realizing pressurizing and conveying of the water flow. In this process, even if the actuating wheel 220 and the pressurizing membrane 300 move relatively, the membrane sealing ring 350 in the first groove 223 of the actuating wheel 220 deforms elastically and keeps good contact fit with the actuating portion 310 of the pressurizing membrane 300, so as to keep the pore sealing of the pressurizing membrane 300 and improve the sealing effect.

According to the technical scheme, the actuating wheel 220 is provided with the first sinking groove 223, the membrane sealing ring 350 is arranged in the first sinking groove 223, the membrane pressing table 314 is arranged at the joint of the actuating part 310 of the pressurizing membrane 300 and the actuating wheel 220, the membrane sealing ring 350 is supported by the membrane pressing table 314 and is fixed in the first sinking groove 223, the membrane sealing ring 350 is elastically deformed along the radial direction under the action force exerted by the membrane pressing table 314, so that the upper surface and the lower surface of the membrane sealing ring 350 are radially expanded to obtain a large surface area, the upper surface and the lower surface of the membrane sealing ring 350 are respectively tightly attached to the lower surface of the pressurizing membrane 300 and the bottom surface of the first sinking groove 223 of the actuating wheel 220, and the attachment area is large; in addition, the outer peripheral surface of the membrane sealing ring 350 is also attached to the side wall 225 of the first sinking groove 223 due to deformation, so that the contact sealing area of the membrane sealing ring 350, the pressurizing membrane 300 and the actuating wheel 220 is effectively increased, the gap of the pressurizing membrane 300 is effectively sealed, and the sealing performance of the pressurizing pump is greatly improved.

Referring to fig. 1, 8 and 9, in an embodiment, the base 100 includes a base body 110 and a shell bracket 120 disposed on the base body 110 for mounting the pressurizing membrane 300; the housing bracket 120 is provided with a plurality of actuating holes 127 for mounting the actuating wheels 220. The shape of the actuation hole 127 is designed to conform to the shape of the actuation pulley 220.

Specifically, the shell bracket 120 of the base 100 is mounted on the seat body 110, and encloses with the seat body 110 to form the accommodating cavity 101. The actuating support 210 of the actuating assembly 200 is installed in the accommodating chamber 101, and the actuating wheel 220 on the actuating support 210 extends upwards into the actuating hole 127 of the shell support 120 through the top of the accommodating chamber 101. The larger the aperture of the actuating hole 127 is, the higher the hollow degree of the shell holder 120 is, the smaller the supporting surface of the shell holder 120 that can support the pressurizing film 300 is, and the strength of the shell holder 120 is reduced. Therefore, the shape of the actuating hole 127 is designed to be consistent with the shape of the actuating wheel 220, so that the actuating hole 127 of the shell bracket 120 can be ensured for the actuating wheel 220 to be matched and installed, and the shell bracket 120 can be ensured to have a larger supporting surface as much as possible so as to stabilize the pressurizing film 300.

Referring to fig. 3 to 5, in an embodiment, the booster pump further includes a fixing assembly 400 for connecting the actuating wheel 220 and the actuating portion 310, and the fixing assembly 400 includes a fixing block 410 and a connecting member 420; wherein, the fixed block 410 is disposed on the actuating portion 310; the connecting member 420 connects the fixing block 410 with the corresponding actuating portion 310 and the actuating wheel 220.

Specifically, the number of the fixing members 400 is the same as the number of the actuating rollers 220 on the actuating bracket 210. Each fixing member 400 is used for fixing one actuating wheel 220 and the actuating part 310. Specifically, since the actuating assembly 200 has five actuating wheels 220, the number of the fixing assemblies 400 is five accordingly. When the membrane sealing ring is installed, the membrane sealing ring 350 is placed in the first sinking groove 223 of the actuating wheel 220; fixing the fixing block 410 to the actuating portion 310 of the pressurizing membrane 300, and then placing the pressurizing membrane 300 on the base 100, so that the actuating portion 310 of the pressurizing membrane 300 covers the actuating hole 127; in the process, the membrane pressing platform 314 on the lower surface of the actuating part 310 is inserted into the first sunken groove 223 of the actuating wheel 220 and presses the membrane sealing ring 350 of the first sunken groove 223; then, the connecting member 420 is used to connect the fixing block 410, the actuating portion 310 and the actuating wheel 220 together. After the assembly is completed, the film sealing ring 350 is correspondingly wound around the periphery of the coupling hole of the pressurizing film 300, so that the gap between the pressurizing film 300 and the actuator wheel 220 can be effectively sealed. The connecting piece 420 is a screw; of course, in other embodiments, the connecting member 420 may also be a component having a connecting function, such as a latch.

Referring to fig. 5 to 7, regarding the specific shape structure of the membrane sealing ring 350, the membrane sealing ring 350 is disposed in a circular ring shape. It is considered that the conventional seal ring, which has a circular cross section in general, has a relatively high hardness and is not easily compressed and deformed, so that it is difficult to radially deform the conventional seal ring, and it is difficult to obtain a relatively large surface area, and the area in contact with the pressurizing film 300 is relatively small. Further, the upper or lower surface of such conventional seal rings is not a flat surface, but an arc-shaped surface. If the conventional sealing ring is used as the membrane sealing ring 350, the upper surface of the conventional sealing ring is only partially attached to the pressurizing membrane 300, and the lower surface of the conventional sealing ring is also partially attached to the lower surface of the first sinking groove 223 of the actuating wheel 220, so that the attachment area is small, and the sealing effect is poor.

Referring to fig. 4 to fig. 7, in view of this, in the present embodiment, in order to improve the sealing effect of the membrane sealing ring 350, optionally, the membrane sealing ring 350 has an upper annular plane 351 and a lower annular plane 352 disposed along the upper and lower directions; wherein, the lower annular plane 352 is attached to the bottom surface of the first sink 223; the upper annular flat surface 351 is in abutment with the lower surface of the membrane pressing stage 314.

Specifically, the lower annular flat 352 forms a lower surface of the membrane seal ring 350, and the upper annular flat 351 forms an upper surface of the membrane seal ring 350. The cross section of the membrane sealing ring 350 may be square or track-shaped, and only the upper surface and the lower surface of the membrane sealing ring 350 need to be flat. Because the lower annular plane 352 is a plane, the lower annular plane 352 can form surface-to-surface contact fit with the bottom surface of the first sinking groove 223; similarly, the upper annular plane 351 is also a plane, so that the upper annular plane 351 can be in surface-to-surface contact with the lower surface of the operating portion 310 of the pressurizing membrane 300. Therefore, the contact area between the membrane sealing ring 350 and the pressurizing membrane 300 and the contact area between the membrane sealing ring and the actuating wheel 220 can be effectively increased, and the sealing effect is further effectively improved.

Further, the thickness of the membrane sealing ring 350 between the lower annular flat 352 and the upper annular flat 351 is smaller than the depth of the first sink groove 223. As shown in fig. 4, h in fig. 4₁Indicated as the height of the film pressing stage 314; h is₂Indicated as the depth of the first sinker 223, so there is h₁＜h₂. Thus, the membrane sealing ring 350 can be completely accommodated in the first sinking groove 223, and the membrane sealing ring 350 does not protrude from the upper surface of the actuating wheel 220, so that the upper surface of the actuating wheel 220 can be attached to the lower surface of the pressurizing membrane 300, and a large gap is avoided.

With continued reference to fig. 5-7, in one embodiment, the membrane sealing ring 350 further has an outer circumferential surface 353 located at an outer circumference thereof and connecting the lower annular surface 352 and the upper annular surface 351, wherein the outer circumferential surface 353 is attached to the sidewall 225 of the first sinking groove 223. In this way, the membrane sealing ring 350 can be formed with at least three sealing surfaces, so as to effectively seal the pores between the pressurizing membrane 300 and the actuating wheel 220, and reduce the water flow from the pores to the actuating hole 127.

Further, the diameter of the outer circumferential surface 353 of the membrane sealing ring 350 is larger than the inner diameter of the first sinking groove 223, so that the outer circumferential surface 353 is in interference fit with the side wall 225 of the first sinking groove 223, so that the outer circumferential surface 353 and the side wall 225 of the first sinking groove 223 are tightly attached together, and the sealing performance between the two is enhanced.

Referring to fig. 5 to 7, in an embodiment, it is considered that when the membrane sealing ring 350 is pressed by the membrane pressing table 314, the membrane sealing ring 350 is elastically deformed, and if the space of the first sinking groove 223 is insufficient, the membrane sealing ring 350 is hard to be compressed. In view of this, optionally, a gap 226 is formed between the side wall of the first sink groove 223 and the outer circumferential surface of the film pressing table 314 at an interval, the gap 226 being adapted to fit the deformed portion of the film seal ring 350.

When the membrane seal ring 350 is pressed by the membrane pressing stage 314, the membrane seal ring 350 is deformed in the radial direction thereof, and the outer peripheral deformed portion of the membrane seal ring 350 is fitted into the gap 226, thereby closing the gap 226. This ensures that the membrane seal 350 can be deformed in a compliant manner when compressed, and also effectively ensures the sealing effect of the membrane seal 350 by closing the gap 226 with the deformed portion of the membrane seal 350.

Further, the film pressing stage 314 is disposed in a truncated cone shape, and the diameter of the film pressing stage 314 is gradually reduced from top to bottom to form the gap 226 between the outer circumferential surface of the lower end of the film pressing stage 314 and the side wall of the first sink 223.

Specifically, the membrane pressing stage 314 is disposed in a truncated cone shape such that the diameter of the membrane pressing stage 314 is gradually reduced from top to bottom, and thus the diameter of the lower end of the membrane pressing stage 314 is small. By such design, on one hand, the film pressing table 314 can be smoothly guided into the second sinking groove 224; on the other hand, the gap 226 is formed between the lower end of the membrane pressing table 314 and the side wall 225 of the first sinking groove 223, and a gap formed between the upper end of the membrane pressing table 314 and the side wall of the first sinking groove 223 is smaller or even zero, that is, the gap 226 is gradually reduced from bottom to top, so that the requirement of a space required by deformation of the membrane sealing ring 35 can be met, and a water leakage accident caused by an overlarge gap 226 cannot be caused.

Referring to fig. 5 to 7, in one embodiment, the height of the film pressing platform 314 is preferably smaller than the depth of the first sinking groove 223, so as to prevent the film pressing platform 314 from not fully extending into the first sinking groove 223 and a large gap from occurring between the upper surface of the actuating wheel 220 and the lower surface of the pressurizing film 300. Alternatively, the ratio of the height of the film pressing stage 314 to the depth of the first sinker 223 is greater than or equal to 0.6 and less than or equal to 0.7. The ratio may specifically be 0.62, 0.65, 0.67, 0.68, etc.

Further, a pressing rib 315 is protruded on the lower surface of the membrane pressing table 314, and the pressing rib 315 presses the membrane gasket 350. Compared with the membrane pressing platform 314, the contact area of the pressing convex rib 315 and the membrane sealing ring 350 is smaller, and under the same acting force, the pressure of the pressing convex rib 315 on the membrane sealing ring 350 is larger, so that the pressing convex rib tightly presses against the membrane sealing ring 350, the membrane sealing ring 350 can be fixed, and the sealing effect can be effectively enhanced.

Referring to fig. 4 to 6, based on any of the above embodiments, the pressurizing film 300 has a film positioning table 313 protruding from the lower surface of the actuating portion 310, and the actuating wheel 220 has a second sinking groove 224 for the film positioning table 313 to be inserted into; wherein, the actuating wheel 220 is recessed in the bottom of the second sinking groove 224 to form a first sinking groove 223; the actuator 310 is provided with a film pressing table 314 protruding from the bottom surface of the film positioning table 313.

Specifically, the actuating wheel 220 and the actuating portion 310 are provided with connecting holes for the connecting member 420 to pass through; wherein, the upper surface of the actuating wheel 220 is provided with a second sinking groove 224 around the periphery of the connecting hole 226; the lower surface of the operating part 310 is provided with a film positioning table 313 around the periphery of the connection hole, and the film positioning table 313 is placed in the second sinking groove 224. The pressurizing film 300 can be positioned by correspondingly installing the film positioning table 313 of each actuating part 310 of the pressurizing film 300 into each second sinking groove 224 of the actuating wheel 220, so that the pressurizing film 300 is not easy to horizontally rotate in the limiting sinking groove 123 of the shell bracket 120.

The actuating wheel 220 is provided with a first sinking groove 223 on the bottom surface of the second sinking groove 224, and a membrane sealing ring 350 is arranged in the first sinking groove 223; a film pressing table 314 is provided on the lower surface of the film positioning table 313 in a protruding manner, and the film pressing table 314 presses the film seal ring 350. During assembly, the membrane sealing ring 350 is placed in the first sinking groove 223 of the actuating wheel 220; then the pressurizing film 300 assembled with the fixing block 410 is covered on the actuating hole 127, so that the film positioning table 313 of each actuating part 310 of the pressurizing film 300 is correspondingly matched with each second sinking groove 224 of the actuating wheel 220, the film pressing table 314 under each film positioning table 313 of the pressurizing film 300 is pressed on the film sealing ring 350, and finally the connecting piece 420 of the fixing assembly 400 is adopted to penetrate through the connecting holes of the fixing block 410, the actuating part 310 of the pressurizing film 300 and the actuating wheel 220 to be connected and fixed into a whole.

In a conventional installation manner of the membrane sealing ring 350, the membrane sealing ring 350 is generally fixed on the pressurizing membrane 300 through the fixing block 410, which may cause the membrane sealing ring 350 to be shielded by the fixing block 410, so that the pressurizing membrane 300 assembled with the fixing block 410 into a whole covers the actuating hole 127, and it is difficult to find out in time whether the membrane sealing ring 350 is installed between the fixing block 410 and the pressurizing membrane 300, thereby frequently causing the neglected installation of the membrane sealing ring 350. In the embodiment, since the film sealing ring 350 is installed in the first sinking groove 223 of the actuating wheel 220, before the pressurized film 300 is installed, it can be seen from the upper side of the actuating wheel 220 whether the film sealing ring 350 is normally installed in the first sinking groove 223, if the film sealing ring 350 is found to be leaked in the first sinking groove 223, the film sealing ring 350 can be timely and additionally installed, and the condition that the film sealing ring 350 is leaked is effectively avoided.

Referring to fig. 5, 16 and 17, in an embodiment, in order to improve the stability of the fixing block 410 mounted on the pressurizing film 300, a fixing protrusion ring 413 may be protruded on the lower surface of the fixing block 410; the actuating portion 310 is provided with a fixing groove 311 for the fixing protrusion ring 413 to fit. Alternatively, one of the fixing blocks 410 and the corresponding actuating portion 310 is provided with a fixing protrusion 312, and the other one is provided with a fixing hole 414 for the fixing protrusion 312 to engage. The fixing block 410 may be provided with only one of the fixing protrusion ring 413 and the fixing protrusion 312, or both of them.

Specifically, the fixing convex ring 413 is arranged on the lower surface of the fixing block 410; the actuating portion 310 is provided with a fixing groove 311 engaged with the fixing protrusion ring 413. The fixing block 410 is further provided with a fixing hole 414 on the lower surface thereof; the actuating portion 310 is further provided with a fixing protrusion 312 inserted into the fixing hole 414. During assembly, the fixing convex ring 413 of the fixing block 410 is correspondingly inserted into the fixing groove 311 of the actuating part 310 to position the fixing block 410 and limit the movement of the fixing block 410 in the horizontal direction; accordingly, the fixing protrusion 312 of the actuating portion 310 is inserted into the fixing hole 414 of the fixing block 410, thereby defining the rotational movement of the fixing hole 414, so that the fixing block 410 is not easily rotationally displaced.

Referring to fig. 1 and 4, according to any one of the above embodiments, the booster pump further includes a driving assembly 900 mounted on the base 100, the driving assembly 900 including a motor 910 and an eccentric cam 920; wherein, the motor 910 is disposed outside the base 100; the eccentric cam 920 is connected with the motor 910, and the eccentric cam 920 is installed inside the base 100 and connected with the actuating bracket 210.

Specifically, the drive assembly 900 further includes a first bearing 930 and a second bearing 940; wherein, the first bearing 930 is installed in the base 100, the eccentric cam 920 is installed on the first bearing 930, and the motor shaft of the motor 910 passes through the first bearing 930 to be connected with the eccentric cam 920; the second bearing 940 is installed in the bearing groove 211 at the bottom of the actuating bracket 210, and the eccentric cam 920 is connected to the actuating bracket 210 through the second bearing 940.

The utility model also provides a water purifier, which comprises a booster pump. The specific structure of the booster pump refers to the above-mentioned embodiment. Since the water purifier adopts all the technical schemes of all the embodiments, all the beneficial effects brought by the technical schemes of the embodiments are also achieved, and are not repeated.

Optionally, the water purifier further comprises a reverse osmosis filter element (not shown in the figure), wherein the reverse osmosis filter element separates raw water into pure water with lower concentration and waste water with higher concentration through a reverse osmosis membrane element; wherein, the pure water is supplied to the user through the pure water pipeline; and the waste water is discharged through a waste water pipeline. The structure type of the reverse osmosis filter element is common in the market of the field, and is not detailed here.

Specifically, the booster pump includes a pump housing 800 (shown in fig. 1), the pump housing 800 being mounted on the base 100 and covering the piston cover 500. The pump housing 800 is provided with a water outlet cavity 801 and a water inlet cavity 802 adapted to communicate with the pressurizing cavity 501, and the pump housing 800 is further provided with a water outlet pipe interface communicating with the water outlet cavity 801 and a water inlet pipe interface communicating with the water inlet cavity 802. The water inlet pipe connector is communicated with a water inlet pipeline, and the water outlet pipe connector is connected with the raw water inlet end of the reverse osmosis filter element.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (13)

1. A booster pump, characterized in that the booster pump comprises:

the base is provided with an actuating hole;

the pressurizing film is arranged on the base and provided with an actuating part covering the actuating hole, and a film pressing platform is convexly arranged on the lower surface of the actuating part;

the actuating component comprises an actuating wheel which is movably arranged in the actuating hole along the up-down direction, the actuating wheel is provided with a connecting hole used for being connected with the actuating part, and a first sinking groove which is positioned on the periphery of the connecting hole and used for the film pressing platform to be inserted; and

and the membrane sealing ring is arranged in the first sinking groove and is abutted and held by the membrane pressing platform to be fixed in the first sinking groove.

2. The booster pump of claim 1, wherein the membrane seal ring has a lower annular flat surface and an upper annular flat surface disposed in an up-down direction; the lower annular plane is attached to the bottom surface of the first sinking groove; the upper annular plane is attached to the bottom surface of the film pressing table.

3. The booster pump of claim 2, wherein said membrane seal ring further has an outer ring peripheral surface located at an outer periphery thereof and connecting said lower annular flat surface and said upper annular flat surface, said outer ring peripheral surface being in abutment with a side wall of said first sink groove.

4. The booster pump of claim 3, wherein a diameter of an outer circumferential surface of the membrane seal ring is larger than an inner diameter of the first sinker, so that the outer circumferential surface is in interference fit with a sidewall of the first sinker.

5. The booster pump of claim 3, wherein a gap is formed between a side wall of the first sink groove and an outer peripheral surface of the film pressing stage at an interval suitable for a deformed portion of the film seal ring to be fitted.

6. The booster pump as set forth in claim 5, wherein the film pressing stage is disposed in a truncated cone shape to form the gap between an outer circumferential surface of a lower end of the film pressing stage and a sidewall of the first sinker.

7. The booster pump as claimed in any one of claims 2 to 6, wherein a pressing rib is protruded from a bottom surface of the membrane pressing stage, the pressing rib is annularly disposed, and the pressing rib abuts against the upper annular surface.

8. The booster pump of any one of claims 2 to 6, wherein a thickness of said membrane seal ring between a lower annular plane and said upper annular plane is less than a depth of said first sink.

9. The booster pump of any one of claims 1 to 5, wherein a ratio of a depth of the first sink groove to a height at which the film pressing mesa is raised is greater than or equal to 0.6 and less than or equal to 0.7.

10. The booster pump as claimed in any one of claims 1 to 5, wherein a film positioning table is protruded from a lower surface of the actuating portion, and a second sinking groove into which the film positioning table is inserted is further formed at a top of the actuating wheel; wherein the content of the first and second substances,

the actuating wheel is concavely arranged on the bottom surface of the second sinking groove to form the first sinking groove;

the actuating part is convexly arranged on the bottom surface of the film positioning table to form the film pressing table.

11. The booster pump as claimed in any one of claims 1 to 5, further comprising a fixing member for connecting the actuator wheel and the actuator part, the fixing member comprising:

a fixed block disposed on the actuating portion; and

the connecting piece penetrates through the fixed block, and the actuating part and the actuating wheel are connected and fixed.

12. The booster pump as claimed in claim 11, wherein a fixing protrusion ring is protruded from a lower surface of the fixing block; the actuating part is provided with a fixing groove for matching the fixing convex ring; and/or the presence of a gas in the gas,

one of the fixed block and the corresponding actuating part is provided with a fixed bulge, and the other one is provided with a fixed hole for matching the fixed bulge.

13. A water purifier characterized by comprising the booster pump according to any one of claims 1 to 12.

Images