CN116412109A

CN116412109A - Diaphragm pump and water purifier

Info

Publication number: CN116412109A
Application number: CN202111665646.8A
Authority: CN
Inventors: 曾国; 李清
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-07-11
Also published as: WO2023124724A1

Abstract

The invention belongs to the technical field of electric appliances, and particularly relates to a diaphragm pump and a water purifier. The diaphragm pump includes: swing assembly, diaphragm support and diaphragm valve; the balance wheel is arranged on the motion bracket; the diaphragm valve is arranged on the diaphragm support and connected with the swinging assembly, and when the balance wheel is static, the position point of the diaphragm valve is located at the initial position. The diaphragm pump and the water purifier can ensure that the service life of the diaphragm valve is the largest in the working process.

Description

Diaphragm pump and water purifier

Technical Field

The application belongs to the technical field of electric appliances, and particularly relates to a diaphragm pump and a water purifier.

Background

The diaphragm pump is a core component of a water purifier product, and the diaphragm design is the core and the difficulty of the diaphragm pump. The diaphragm plays a very critical role in the power driving of the water purifier, and the service life of the diaphragm is very important in the whole service cycle of the water purifier. Once the membrane is ruptured, the entire purifier product is equivalent to being scrapped. However, the diaphragm life of the diaphragm pump of the related art cannot be ensured.

Disclosure of Invention

In order to solve the technical problems, the invention provides a method for solving the technical problems that the service life of a diaphragm pump cannot be guaranteed at least to a certain extent.

The technical scheme of the invention is as follows:

a diaphragm pump, characterized by comprising: a swing assembly; a septum bracket; the diaphragm valve is arranged on the diaphragm bracket and connected with the swinging assembly, and when the balance wheel is static, the position point of the diaphragm valve is positioned at the initial position; the position point reaches a first limit position and a second limit position along with the swing of the swing assembly, and the initial position is positioned in the middle of the first limit position and the second limit position.

In some embodiments, a midpoint is disposed between the first and second extreme positions, the midpoint being located intermediate the first and second extreme positions, the distance between the initial position and the midpoint being 30-70% of the distance between the first and second extreme positions.

In some embodiments, the initial position is located at the midpoint.

In some embodiments, the swing assembly comprises: the diaphragm valve comprises a motion bracket and a balance wheel arranged on the motion bracket, wherein the balance wheel is connected with the diaphragm valve.

In some embodiments, the diaphragm pump further comprises: and the press-fit assembly is connected with the balance wheel.

In some embodiments, the press-fit assembly comprises: the pressure head is in contact with the diaphragm valve, and the diaphragm valve is arranged between the balance wheel and the pressure head; the connecting piece is arranged in a penetrating way and is connected with the balance wheel through the pressure head and the diaphragm valve.

In some embodiments, the location point is in conflict with the ram.

In some embodiments, the location point abuts an edge of the ram.

In some embodiments, a plurality of the diaphragm petals form a diaphragm, with a protrusion at an edge of the diaphragm.

In some embodiments, the diaphragm pump further comprises a drive assembly coupled to the motion bracket.

In some embodiments, the drive assembly comprises: a motor drive rod; the swash plate is sleeved on the motor transmission rod; the bearing is sleeved on the swash plate, and the moving support is sleeved on the bearing.

In some embodiments, the diaphragm pump further comprises a cover plate connected to the diaphragm support, and the cover plate is provided with a chamber, and the diaphragm flap is disposed in the chamber.

Based on the same inventive concept, the application also provides a water purifier, which comprises the diaphragm pump.

The beneficial effects of the invention at least comprise:

the diaphragm valve is arranged on the diaphragm support and is connected with the balance wheel, so that the diaphragm valve is supported by the diaphragm support, and the position point reaches a first limit position and a second limit position along with the swing of the swing assembly, so that the first limit position is the farthest position reached by the push position point of the swing assembly, the first limit position is the farthest position reached by the pull position point of the swing assembly, and the position point of the diaphragm valve is positioned at the initial position when the swing assembly is static and is positioned in the middle of the first limit position and the second limit position, so that the deformation strain of the position point in operation is minimum when the swing assembly drives the position point to act, thereby ensuring the maximum service life of the diaphragm valve in the working process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of a diaphragm pump of the present embodiment;

FIG. 2 is an A-A cross-sectional view of the diaphragm pump of the present embodiment;

FIG. 3 is an exploded view of the diaphragm pump of FIG. 1;

FIG. 4 is a schematic illustration of the diaphragm pump of FIG. 1;

FIG. 5 is a top view of the diaphragm of FIG. 4;

fig. 6 is a bottom view of the diaphragm of fig. 4.

In the accompanying drawings:

a swing assembly 100;

a moving support 10;

balance 20;

a diaphragm holder 30, a buckle 301;

diaphragm petals 40, projections 401;

a press-fit assembly 50, a press head 501, a connector 502;

a support 60;

drive assembly 70, motor drive rod 701, swashplate 702, bearings 703, base 704, drive motor 705;

cover plate 80, water inlet pressing piece 801, water outlet pressing piece 802, first groove 803, water inlet 8031, second groove 804, water outlet 8041 and sealing piece 805;

and a fastener 90.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

the in-wheel motor provided by the embodiment aims at solving the technical problem that the service life of a diaphragm pump cannot be guaranteed to a certain extent at least.

FIG. 1 is a top view of a diaphragm pump of the present embodiment; FIG. 2 is an A-A cross-sectional view of the diaphragm pump of the present embodiment; FIG. 3 is an exploded view of the diaphragm pump of FIG. 2; FIG. 4 is a schematic illustration of the diaphragm pump of FIG. 2; FIG. 5 is a top view of the diaphragm of FIG. 4; fig. 6 is a bottom view of the diaphragm of fig. 4. With reference to fig. 1, 2, 3, 4, 5 and 6, the diaphragm pump of the present embodiment includes: swing assembly 100, diaphragm mount 30 and diaphragm valve 40. Diaphragm valve 40 is disposed on diaphragm mount 30 and is coupled to wobble assembly 100 such that when balance 20 is stationary, the position of diaphragm valve 40 is at an initial position. Wherein the position point reaches the first limit position and the second limit position along with the swing of the swing assembly 100, and the initial position is located at the middle of the first limit position and the second limit position.

In this embodiment, the diaphragm valve 40 is disposed on the diaphragm support 30 and is coupled to the swing assembly 100, and the diaphragm valve 40 is supported by the diaphragm support 30. The position point reaches a first limit position and a second limit position along with the swing of the swing assembly 100, wherein the first limit position is the farthest position reached by the position point pushed by the swing assembly 100, and the first limit position is the farthest position reached by the position point pulled by the swing assembly 100. Since the position point of the diaphragm valve 40 is located at the initial position and the initial position is located at the middle of the first limit position and the second limit position when the swing assembly 100 is at rest, when the swing assembly 100 drives the position point to act, the deformation of the position point in operation becomes minimum, thereby reducing the loss of the diaphragm valve 40 and prolonging the service life of the diaphragm valve 40 in the working process.

In this embodiment, a midpoint is disposed between the first and second extreme positions, the midpoint is located in an intermediate position between the first and second extreme positions, and the distance between the initial position and the midpoint is 30-70% of the distance between the first and second extreme positions, so when the swing assembly 100 drives the position point to act, the deformation of the position point in operation is small, the loss of the diaphragm valve 40 is reduced, and the service life of the diaphragm valve 40 in operation is prolonged.

In this embodiment, the initial position is located at the midpoint, and when the swing assembly 100 drives the position point to act, the deformation of the position point in operation becomes minimum, so that the loss of the diaphragm 40 is reduced, and the service life of the diaphragm 40 in the working process is prolonged.

In some embodiments, in conjunction with fig. 2, the diaphragm pump is positioned vertically, so that the first extreme position is the Z-highest position reached by the swing assembly 100 push position point, and the second extreme position is the Z-lowest position reached by the swing assembly 100 pull position point.

In this embodiment, in order to ensure the service life of the diaphragm valve 40, the number of the position points is multiple, the position points may be located at any position of the diaphragm valve 40, and the multiple position points are located at the midpoints of the first limit position and the second limit position, so as to ensure that deformation strain of each position point in operation is minimum, and deformation strain of the diaphragm valve 40 in operation is minimum, thereby ensuring that the service life of the diaphragm valve 40 in operation is maximum.

In this embodiment, as the number of the diaphragm lobes 40 is plural, the number of the balance wheels 20 is plural, the plural balance wheels 20 are in one-to-one correspondence with the plural diaphragm lobes 40, the diaphragm lobes 40 are connected with the corresponding balance wheels 20, and the corresponding diaphragm lobes 40 are driven to be connected by the balance wheels 20.

Referring to fig. 2 and 3, in the present embodiment, the swing assembly 100 includes: a motion bracket 10 and a balance 20. Balance 20 is provided on a motion bracket 10, balance 20 is supported by motion bracket 10, and balance 2 is driven to act. Balance 20 is coupled to diaphragm 40 to support diaphragm 40 and to actuate diaphragm 40.

In this embodiment, in order to facilitate the connection of the diaphragm flap 40 to the balance 20, in connection with fig. 3, the diaphragm pump further comprises: the assembly 50 is press fit. The press-fit assembly 50 is connected with the balance 20 to press-fit the diaphragm valve 40 onto the balance 20, so that the diaphragm valve 40 and the balance 20 are firmly connected, and the balance 20 can conveniently drive the diaphragm valve 40 to act.

Referring to fig. 3, in the present embodiment, the press-fitting assembly 50 includes: a ram 501 and a connector 502. The pressure head 501 is in conflict with the diaphragm valve 40, and the diaphragm valve 40 is arranged between the balance 20 and the pressure head 501, so that the diaphragm valve 40 is pressed on the balance 20 through the pressure head 501, and the firm connection between the diaphragm valve 40 and the balance 20 is ensured. The connecting piece 502 is arranged through the pressure head 501 and the diaphragm valve 40 and connected with the balance 20, so that the pressure head 501, the diaphragm valve 40 and the balance 20 are connected into an integral structure. Specifically, a first through hole is formed in the pressure head 501, a second through hole is formed in the diaphragm valve 40, a mounting hole is formed in the balance 20, the second through hole is respectively communicated with the first through hole and the mounting hole, and the connecting piece 502 sequentially penetrates through the first through hole and the second through hole to be connected with the mounting hole, so that the pressure head 501, the diaphragm valve 40 and the balance 20 are connected into an integral structure.

In this embodiment, the diaphragm support 30 is provided with a through groove, and the balance 20 is connected with the diaphragm valve 40 by penetrating through the through groove, so that the balance 20 is connected with the diaphragm valve 40, and the assembly is convenient, and meanwhile, the action of the balance 20 is not interfered.

In this embodiment, the connecting piece 502 may be a bolt, the mounting hole may be a bolt hole, and the bolt is sequentially inserted into the first through hole and the second through hole and connected with the bolt hole, so that the pressure head 501 and the diaphragm valve 40 are conveniently assembled on the balance 20, and the assembly efficiency is improved.

In this embodiment, since the pressure head 501 presses the diaphragm 40 on the balance 20, that is, the balance 20 mainly drives the diaphragm 40 that is in contact with the pressure head 501 to act, the deformation of the portion of the diaphragm 40 that is in contact with the pressure head 501 during operation is large, so the position point is in contact with the pressure head 501, and since the deformation strain of the position point during operation is minimum, the deformation strain of the diaphragm 40 during operation is minimum, thereby ensuring the maximum service life of the diaphragm 40 during operation.

In this embodiment, since the pressure head 501 presses the diaphragm 40 on the balance 20, that is, the balance 20 mainly drives the diaphragm 40 that is in contact with the pressure head 501 to act, the deformation of the portion of the diaphragm 40 that is in contact with the edge of the pressure head 501 during operation is maximum, so the location point is in contact with the edge of the pressure head 501, and the deformation strain of the location point during operation is minimum, so the deformation strain of the diaphragm 40 during operation is minimum, and the service life of the diaphragm 40 during operation is ensured to be maximum.

In this embodiment, in order to ensure stability of the supporting diaphragm valve 40, in connection with fig. 3, the diaphragm pump further comprises a support 60. The support piece 60 is arranged in the inner peripheral surface of the diaphragm support 30 to form an embedded groove with the inner wall of the diaphragm support 30, and the edge of the diaphragm valve 40 is embedded in the embedded groove, that is, the bottom edge of the diaphragm valve 40 is arranged on the support frame 60 and connected with the support frame 60, the diaphragm valve 40 is supported by the support frame 60, the edge of the diaphragm valve 40 is fastened, and the balance 20 is ensured to drive the diaphragm valve 40 to elastically deform. Wherein, the shape of the embedded groove is L-shaped.

In this embodiment, the diaphragm petals 40 are generally rounded triangles and the support 60 is also rounded triangles. It is understood that in other embodiments, the diaphragm valve 40 and the support member 60 may have other shapes, as long as the diaphragm valve 40 conforms to the shape of the support member 60, and the support member 60 may support the diaphragm valve 40.

In this embodiment, the cross-section of the supporting frame 60 is annular to support and fasten the diaphragm valve 40, and the balance 60 is inserted into the supporting frame 60 and connected with the diaphragm valve 40, so that the balance 20 is not affected to drive the diaphragm valve 40 to elastically deform, and the arrangement and installation of other devices of the diaphragm pump are not affected.

In this embodiment, the diaphragm pump further includes a cover plate 80. The cover plate 80 is connected to the diaphragm holder 30, and the cover plate 80 is supported by the diaphragm holder 20. The cover plate 80 has a chamber in which the diaphragm valve 40 is disposed, and the balance 20 drives the diaphragm valve 40 to reciprocate in the chamber for contraction and expansion.

In this embodiment, the draw-in groove has been seted up to one of them apron 80 and diaphragm support 30, and another is equipped with buckle 301, and buckle 301 card is located in the draw-in groove, and the apron 80 of being convenient for is connected with diaphragm support 30, improves assembly efficiency, locates the draw-in groove through buckle 301 card, also can play the effect of location, has further improved assembly efficiency.

Specifically, the clamping groove is formed in the cover plate 80, the clamping buckle 301 is arranged on the diaphragm support 30, the clamping buckle 301 is clamped in the clamping groove, the cover plate 80 and the diaphragm support 30 are convenient to connect, assembly efficiency is improved, the clamping groove is clamped by the clamping buckle 301, positioning can be achieved, and assembly efficiency is further improved.

Specifically, the sealing member 805 is provided between the cover plate 80 and the diaphragm support 30, so that the cover plate 80 and the diaphragm support 30 can be tightly sealed, and leakage of water flow during transmission between the cover plate 80 and the diaphragm support 30 is avoided. In this embodiment, the seal 805 is an elastic seal ring. It will be appreciated that in other embodiments, the seal 805 may also be other types of seals, such as a sealing packing.

In the present embodiment, with reference to fig. 2 and 3, a water inlet pressing piece 801 is disposed between the cover plate 80 and the diaphragm 40, that is, the water inlet pressing piece 801 is disposed in the chamber and forms a sealed chamber with the diaphragm 40. The cover plate 80 is further provided with a water outlet pressing piece 802 at one end far away from the diaphragm valve 40, the water inlet pressing piece 801 and the water outlet pressing piece 802 are mutually matched, and the balance wheel 20 is driven to suck water flow back and forth and discharge water flow in a stable pressure mode by means of the reciprocating linear motion of the balance wheel 20 along the axial direction. Both the intake water sheet 801 and the output water sheet 802 are made of an elastic material, which can be elastically expanded or contracted.

In this embodiment, a first groove 803 is disposed on the cover plate 80, a water inlet pressing sheet 801 is disposed in the first groove 803, and a plurality of water inlets 8031 are disposed on the first groove 803, and a water outlet pressing sheet 801 controls the on-off of the water inlets 8031. The cover plate 80 is provided with a second groove 804, the water outlet pressing piece 802 is arranged in the second groove 804, and the second groove 804 is provided with a plurality of water outlets 8041, and the water inlet pressing piece 802 controls the on-off of the water outlets 8041. Wherein, the concave direction of the first groove 803 is opposite to the concave direction of the second groove 804.

Specifically, when the sealing chamber formed between the diaphragm valve 40 and the cover plate 80 expands, the pressure in the sealing chamber is reduced to form a relatively low pressure, the space between the cover plate 80 and the outside forms a relatively high pressure, the sealing chamber with a suction force at the relatively low pressure forms a gap between the water inlet pressing plate 801 and the water inlet 8041, the outside water flow is sucked into the sealing chamber through the water inlet 8041, the space between the cover plate 80 with the relatively high pressure and the outside has a thrust force, the water outlet pressing plate 802 is tightly attached to the water outlet 8041, so that the water outlet 8041 is blocked, at the moment, the water outlet 8041 is closed, and the water inlet 8041 sucks the water flow into the sealing chamber, so that the water suction process is completed. When the sealing cavity formed between the diaphragm valve 40 and the cover plate 80 is contracted, the pressure in the sealing cavity is increased to form relatively high pressure, the space between the cover plate 80 and the outside forms relatively low pressure, the relatively high pressure sealing cavity has thrust, the water inlet pressing sheet 801 is tightly attached to the water inlet 8041, so that the water inlet 8041 is blocked, the space between the relatively low pressure cover plate 80 and the outside has suction, a gap is formed between the water outlet pressing sheet 802 and the water outlet 8041, water in the sealing cavity is sucked between the cover plate 80 and the outside through the water outlet 8041, water flows out of the sealing cavity, the water inlet 8041 is closed, and the water outlet 8041 discharges the water flow out of the sealing cavity, so that the water discharge process is completed.

In this embodiment, the description is for convenience. Only the operation of one sealed chamber is described. It will be appreciated that in other embodiments, the diaphragm pump may include a plurality of sealed chambers, provided that the balance 20, the pressure head 501, the diaphragm valve 40, the first groove 803, and the water inlet pressure plate 801 have the same number, and that the more the number of sealed chambers, the more stable the pressure of the water flow is, and the more the sealed chambers are used in combination, the pressure of the water flow can be enhanced, and the change in the water pressure can be uniform, so that the pressurized water flow with stable water pressure can be provided.

In this embodiment, to power the action of balance 20, the diaphragm pump also includes a drive assembly 70. The driving component 70 is connected with the moving bracket 10, the moving bracket 10 is driven to act through the driving component 70, the moving bracket 10 drives the balance wheel 20 to act, and the balance wheel 20 drives the diaphragm valve 40 to act.

Referring to fig. 2 and 3, in the present embodiment, the driving assembly 70 includes: motor drive rod 701, swash plate 702 and bearings 703. The sloping cam plate 702 is sleeved on the motor transmission rod 701, and the sloping cam plate 702 is driven to act by the motor transmission rod 701. The bearing 703 is sleeved on the swash plate 702, the moving bracket 10 is sleeved on the bearing 703, the bearing 703 is used for transmitting power to the bearing 703, and then the power is transmitted to the moving bracket 10 by the bearing 703, and then the moving bracket 10 drives the balance 20 to act, and the balance 20 drives the diaphragm valve 40 to reach the first limit position or the second limit position.

In this embodiment, the driving assembly 70 further includes a base 704, where the base 704 is connected to the diaphragm support 30 by a plurality of fasteners 90, and the diaphragm support 30 is supported by the base 704 to ensure stability of the diaphragm support 30. The fastener 90 may be a bolt, a screw, or a threaded rod, among others.

In this embodiment, the driving assembly 70 further includes a driving motor 705, and an actuating end of the driving motor 705 and a motor driving rod 701 are used to drive the motor driving rod 701 to actuate.

Referring to fig. 4, 5 and 6, in the present embodiment, the plurality of diaphragm petals 40 form a diaphragm, and the edge of the diaphragm is provided with a protrusion 401, that is, the edge of the diaphragm extends along the axial direction thereof and forms the protrusion 401, and the protrusion 401 can strengthen the structural strength of the diaphragm and reduce fatigue damage of the diaphragm under the reciprocating action of the driving assembly 70.

In some embodiments, the protrusions 401 are provided at the edges of the membrane, and the location points are not provided on the protrusions 401, that is, the location points do not interfere with the protrusions 401. In other embodiments, where the protrusions 401 are not provided at the edges of the diaphragm, then multiple points of location form the diaphragm petals 40 and multiple diaphragm petals 40 form the diaphragm.

Specifically, the driving motor 705 drives the motor driving rod 701 to act, the motor driving rod 701 drives the swash plate 702 to rotate along with the swash plate 702, the end, adjacent to the bearing 703, of the swash plate 702 is inclined, the swash plate 702 and the bearing 703 are abutted against each other in an inclined surface contact manner, the swash plate 702 rotates under the driving of the motor driving rod 701 and drives the bearing 703 to reciprocate along the central axis direction of the swash plate 702, the bearing 703 is fixedly connected with the diaphragm support frame 30, the reciprocating linear motion of the bearing 703 drives the diaphragm support frame 30 and the pressure head 502 to reciprocate, and the pressure head 502 abuts against the diaphragm valve 40, so that the rotary motion of the motor driving rod 701 is converted into deformation acting on the diaphragm assembly 20.

Based on the same inventive concept, the present application further provides a water purifier, the water purifier adopts the membrane pump, and the specific structure of the membrane pump refers to the above embodiments, and since the membrane pump adopts all the technical solutions of all the embodiments, at least the water purifier has all the beneficial effects brought by the technical solutions of the embodiments, and the description thereof is omitted herein.

In the present embodiment, when the above-described diaphragm pump is used in the water purifier, the diaphragm 40 of the diaphragm pump is provided on the diaphragm holder 30, and is connected to the swing unit 100, and the diaphragm 40 is supported by the diaphragm holder 30. The position point reaches a first limit position and a second limit position along with the swing of the swing assembly 100, wherein the first limit position is the farthest position reached by the position point pushed by the swing assembly 100, and the first limit position is the farthest position reached by the position point pulled by the swing assembly 100. Because the position point of the diaphragm valve 40 is located at the initial position when the swing assembly 100 is at rest, and the initial position is located at the middle of the first limit position and the second limit position, when the swing assembly 100 drives the position point to act, the deformation of the position point in operation becomes minimum, the loss of the diaphragm valve 40 is reduced, the service life of the diaphragm valve 40 in the working process is prolonged, the service life of the diaphragm pump is prolonged, and the service life of the water purifier is prolonged.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A diaphragm pump, comprising:

a swing assembly (100);

a diaphragm holder (30);

a diaphragm flap (40) which is arranged on the diaphragm bracket (30) and is connected with the swinging assembly (100), and when the balance wheel (20) is static, the position point of the diaphragm flap (40) is positioned at an initial position;

the position point reaches a first limit position and a second limit position along with the swing of the swing assembly (100), and the initial position is positioned in the middle of the first limit position and the second limit position.

2. The diaphragm pump of claim 1 wherein a midpoint is disposed between the first and second extreme positions, the midpoint being intermediate the first and second extreme positions, the distance between the initial position and the midpoint being 30-70% of the distance between the first and second extreme positions.

3. The diaphragm pump of claim 2 wherein the initial position is at the midpoint.

4. A diaphragm pump according to any one of claims 1-3, characterized in that the wobble assembly (100) comprises: a motion support (10) and a balance wheel (20) arranged on the motion support (10), wherein the balance wheel (20) is connected with the diaphragm valve (40).

5. The diaphragm pump of claim 4 further comprising: and the press-fit assembly (50) is connected with the balance wheel (20).

6. The diaphragm pump of claim 5 wherein the press-fit assembly (50) comprises:

a pressure head (501) which is in contact with the diaphragm valve (40), wherein the diaphragm valve (40) is arranged between the balance wheel (20) and the pressure head (501);

the connecting piece (502) is arranged in the pressure head (501) in a penetrating mode and the diaphragm valve (40) in a penetrating mode and is connected with the balance wheel (20).

7. The diaphragm pump of claim 6 wherein the location point is in interference with the ram (501).

8. The diaphragm pump of claim 7, wherein the location point abuts an edge of the ram (501).

9. A membrane pump according to any one of claims 1-3, characterized in that a plurality of the membrane flaps (40) form a membrane, which is provided with protrusions (401) at its edges.

10. A diaphragm pump according to any one of claims 1-3, characterized in that the diaphragm pump further comprises a drive assembly (70), the drive assembly (70) being connected to the moving carrier (10).

11. The diaphragm pump of claim 10 wherein the drive assembly (70) comprises:

a motor transmission rod (701);

the swash plate (702) is sleeved on the motor transmission rod (701);

the bearing (703) is sleeved on the swash plate (702), and the moving support (10) is sleeved on the bearing (703).

12. A membrane pump according to any one of claims 1-3, characterized in that the membrane pump further comprises a cover plate (80), the cover plate (80) being connected to the membrane holder (30), and the cover plate (80) being provided with a chamber, the membrane flap (40) being provided in the chamber.

13. A water purifier comprising a diaphragm pump as claimed in any one of claims 1 to 12.