Diaphragm pump

Abstract

The utility model provides a diaphragm pump which comprises a diaphragm assembly and a driving assembly, the diaphragm assembly comprises a diaphragm piece, the driving assembly comprises a transmission piece which is used for forming transmission connection with the diaphragm piece, the diaphragm piece comprises a plurality of connecting parts which extend downwards, and the connecting parts are connected with the diaphragm piece. The diaphragm piece comprises a plurality of connecting parts, the connecting parts are distributed at intervals in the circumferential direction of the diaphragm piece, limiting grooves are formed in the connecting parts, the transmission piece comprises a plurality of lug parts, the lug parts extend in the radial direction and correspond to the connecting parts in position one to one, and the lug parts are provided with hole parts allowing the connecting parts to penetrate through. And the lug parts can be clamped and sleeved at the limiting grooves to form positioning. Aiming at the defects in the prior art, the utility model provides the diaphragm pump which is wider in application range and lower in production cost.

Description

Technical Field

[0001] This utility model relates to the field of water pumps, and in particular to a diaphragm pump. Background Technology

[0002] A diaphragm pump changes the volume of the pump chamber through the reciprocating motion of a diaphragm, thereby enabling the intake and discharge of fluid. Commonly used in small household appliances, it typically includes a pump body, a diaphragm, and a drive assembly. During operation, when the diaphragm moves backward, the volume of the pump chamber increases, creating negative pressure. The inlet check valve opens, and fluid is drawn into the pump chamber. When the diaphragm moves forward, the volume of the pump chamber decreases, the pressure increases, the outlet check valve opens, and fluid is discharged. Through the continuous reciprocating motion of the diaphragm, fluid is continuously transported from the inlet to the outlet. The drive assembly includes a motor, an eccentric wheel, and a transmission component. The eccentric wheel and motor drive shaft are eccentrically connected. The transmission component connects the eccentric wheel and the diaphragm. The motor drives the eccentric wheel to move eccentrically, which in turn drives the transmission component to move the diaphragm back and forth. However, in current technology, the diaphragm is connected to the transmission component using bolts or clamps, making assembly inconvenient and affecting product cost. Different types of drive assemblies often require redesigning and manufacturing the diaphragm, limiting its applicability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a diaphragm pump with a wider range of applications and reduced production costs.

[0004] To achieve the above objectives, this utility model provides a diaphragm pump, including a diaphragm assembly and a drive assembly. The diaphragm assembly includes a diaphragm member, and the drive assembly includes a drive member for forming a transmission connection with the diaphragm member. The diaphragm member includes a plurality of downwardly extending connecting portions, which are distributed at intervals along the circumference of the diaphragm member. Each connecting portion is provided with a limiting groove. The drive member includes a plurality of ears, which extend radially and correspond one-to-one with the positions of the connecting portions. Each ear is provided with a hole through which the connecting portions pass, and the ear can be locked into the limiting groove for positioning.

[0005] The advantages of the above technical solution are as follows: By setting a connecting part with a limiting groove on the diaphragm component and setting several ears with holes on the transmission component, positioning can be achieved through the ferrule cooperation between the connecting part and the ears. This gives the diaphragm component better compatibility. This connection structure can be used to achieve effective transmission between the diaphragm component and the drive component when using different drive components, further expanding the application range of the diaphragm pump and meeting the different user needs for drive method selection. The connection method between the diaphragm component and the transmission component is simple to operate. During the assembly process, workers can quickly align and install the connecting part and the ears without using special tools or performing cumbersome operations, which greatly improves assembly efficiency, reduces labor costs and assembly time, and thus reduces the overall production cost.

[0006] The present invention can be further configured such that: the connecting part is integrally disposed on the diaphragm component, the connecting part includes an upper part that is connected to the diaphragm component and is in the shape of a frustum and a protrusion disposed at intervals on the upper part, the upper part is connected to the diaphragm component, and the limiting groove is formed by the upper part and the protrusion at intervals.

[0007] By further designing the protrusion and the upper part to form a limiting groove, a specific positioning and clamping method is provided for the lug of the transmission component. This structure can be adapted to various transmission component lugs of different shapes and sizes. As long as the lug can cooperate with the limiting groove, a connection can be achieved. Therefore, in the design and manufacturing of diaphragm pumps, the same diaphragm component can be used with different transmission components to meet the application scenarios of different driving methods and different power requirements, thereby improving the versatility of diaphragm pumps and expanding their application range.

[0008] The present invention can be further configured such that: the connecting part includes a lower part connected below the protrusion, and the lower part is provided in a gradually decreasing cone shape.

[0009] With further design, the gradually tapering lower structure is simple and the connection with other components is relatively convenient. During the maintenance and repair of the diaphragm pump, it can facilitate disassembly and installation, and make it easy to quickly inspect, repair or replace the diaphragm components and connecting parts.

[0010] The present invention can be further configured such that the ear portion surrounding the hole has an arc-shaped guiding surface.

[0011] With further design, the presence of the arc-shaped guide surface makes the ear part more compatible with the connection parts of different dimensional tolerances. As long as the size of the connection part fluctuates within a certain range, the arc-shaped guide surface can guide it to be smoothly inserted into the hole and achieve effective connection. This makes it easier for the diaphragm pump to adapt to the parts provided by different suppliers, or to replace the diaphragm parts of different specifications more conveniently when upgrading and improving the product, further expanding its application range.

[0012] The present invention can be further configured such that a reinforcing rib is provided between the transmission component and the ear.

[0013] By further designing the reinforcing ribs, the connection strength between the transmission components and the lugs can be enhanced, enabling the diaphragm pump to withstand greater pressure and impact during operation. Especially during the frequent reciprocating motion of the diaphragm pump, the connection between the transmission components and the lugs is prone to fatigue damage. The presence of reinforcing ribs can disperse stress, reduce fatigue accumulation at the connection points, and extend the service life of the diaphragm pump.

[0014] The present invention can be further configured such that: the drive assembly includes a first eccentric wheel and a bearing, the lower end of the first eccentric wheel is eccentrically connected to the output shaft of the motor, the upper end of the first eccentric wheel is inserted into the inner hole of the bearing, and an installation groove is provided below the transmission component, and the bearing is inserted into the installation groove.

[0015] By further designing the first eccentric wheel to be eccentrically connected to the motor output shaft, the rotational motion of the motor can be converted into the eccentric motion of the eccentric wheel, which is then transmitted to the diaphragm via bearings and transmission components, realizing the reciprocating motion of the diaphragm. On this basis, the transmission components and the first eccentric wheel are connected by bearings. The uniform rotation of the eccentric wheel is transmitted to the transmission components and then to the diaphragm via the bearings, reducing vibration and impact during the movement. This makes the diaphragm pump suitable for applications with high requirements for flow stability.

[0016] The present invention can be further configured such that: the drive assembly includes a second eccentric wheel and a connecting rod, the lower end of the second eccentric wheel is eccentrically connected to the output shaft of the motor, a slot is provided below the transmission component, and the two ends of the connecting rod are respectively inserted into the second eccentric wheel and the slot.

[0017] With further configuration, the second eccentric wheel is eccentrically connected to the motor output shaft. By changing the eccentricity of the eccentric wheel, the stroke of the diaphragm pump can be easily adjusted. This allows the diaphragm pump to flexibly adjust the flow rate according to different working requirements, and the connecting rod method can also better adapt to complex installation environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the diaphragm assembly in Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the drive component in Embodiment 1 of this utility model;

[0021] Figure 4 This is a schematic diagram of the transmission component in Embodiment 1 of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention;

[0023] Figure 6 This is a schematic diagram of the drive component according to Embodiment 2 of this utility model;

[0024] Figure 7 This is a schematic diagram of the transmission component according to Embodiment 2 of this utility model;

[0025] The components include: diaphragm assembly 1; diaphragm element 11; connecting part 12; limiting groove 121; upper part 122; protrusion 123; lower part 124; drive assembly 2; transmission element 21; ear part 211; hole part 212; arc-shaped guide surface 213; reinforcing rib 214; mounting groove 215; slot 216; first eccentric wheel 22; bearing 23; second eccentric wheel 24; and connecting rod 25. Detailed Implementation

[0026] An embodiment of the diaphragm pump of this utility model is as follows: Figure 1-4 As shown: It includes a diaphragm assembly 1 and a drive assembly 2. The diaphragm assembly 1 includes a diaphragm member 11. The drive assembly 2 includes a drive member 21 for forming a transmission connection with the diaphragm member 11. The diaphragm member 1 includes a plurality of connecting portions 12 extending downward, which are distributed at intervals along the circumference of the diaphragm member 1. The connecting portions 12 are provided with limiting grooves 121. The drive member 21 includes a plurality of ears 211, which extend radially and correspond one-to-one with the positions of the connecting portions 12. The ears 211 are provided with holes 212 through which the connecting portions 12 can pass, and the ears 211 can be fitted into the limiting grooves 121 to form a positioning.

[0027] The connecting part 12 is integrally disposed on the diaphragm member 11. The connecting part 12 includes an upper part 122 that is connected to the diaphragm member 11 and is in the shape of a frustum, and a protrusion 123 that is spaced apart on the upper part. The upper part 122 is connected to the diaphragm member 11, and the limiting groove 121 is formed by the upper part 122 and the protrusion 123 spaced apart.

[0028] The connecting portion 12 includes a lower portion 124 connected below the protrusion 123, the lower portion 124 being tapered in shape.

[0029] The ear portion 211 has an arc-shaped guide surface 213 forming around the hole portion.

[0030] A reinforcing rib 214 is provided between the transmission component 21 and the ear part 211.

[0031] The drive assembly 2 includes a first eccentric wheel 22 and a bearing 23. The lower end of the first eccentric wheel 22 is eccentrically connected to the output shaft of the motor, and the upper end of the first eccentric wheel 22 is inserted into the inner hole of the bearing 23. A mounting groove 215 is provided below the transmission component 21, and the bearing 23 is inserted into the mounting groove.

[0032] Embodiment 2 of the diaphragm pump of this utility model is as follows: Figure 5-7 As shown, the differences between it and Embodiment 1 are as follows:

[0033] The drive assembly 2 includes a second eccentric wheel 24 and a connecting rod 25. The lower end of the second eccentric wheel 24 is eccentrically connected to the output shaft of the motor. A slot 216 is provided below the transmission component 21. The two ends of the connecting rod 25 are respectively inserted into the second eccentric wheel 24 and the slot 216.

[0034] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A diaphragm pump comprising a diaphragm assembly and a drive assembly, said diaphragm assembly comprising a diaphragm member, said drive assembly comprising a drive member for drivingly engaging said diaphragm member, characterized in that: The diaphragm member comprises a plurality of connecting portions extending downward, the connecting portions are arranged at intervals along the circumference of the diaphragm member, the connecting portions are provided with limiting grooves, the transmission member comprises a plurality of ear portions, the ear portions extend radially and correspond to the connecting portions one by one, the ear portions are provided with hole portions through which the connecting portions pass, and the ear portions are clamped in the limiting grooves to be positioned.

2. The membrane pump of claim 1, wherein: The connecting portions are integrally arranged on the diaphragm member, the connecting portions comprise upper portions connected to the diaphragm member and in the shape of circular truncated cones, and convex portions arranged at intervals on the upper portions, the limiting grooves are formed at intervals by the upper portions and the convex portions.

3. The membrane pump of claim 2, wherein: The connecting portions comprise lower portions connected below the convex portions, and the lower portions are arranged in the shape of tapered cones.

4. The membrane pump according to claim 1 or 2 or 3, characterized in that: The ear portions are provided with arc-shaped guide surfaces around the hole portions.

5. The membrane pump of claim 4, wherein: Reinforcing ribs are arranged between the transmission member and the ear portions.

6. The membrane pump according to claim 1 or 2 or 3 or 5, characterized in that: The driving assembly comprises a first eccentric wheel and a bearing, the lower end of the first eccentric wheel is eccentrically connected to the output shaft of the motor, the upper end of the first eccentric wheel is inserted into the inner hole of the bearing, the transmission member is provided with a mounting groove below, and the bearing is inserted into the mounting groove.

7. The membrane pump according to claim 1 or 2 or 3 or 5, characterized in that: The driving assembly comprises a second eccentric wheel and a connecting rod, the lower end of the second eccentric wheel is eccentrically connected to the output shaft of the motor, the transmission member is provided with an insertion groove below, and the two ends of the connecting rod are respectively inserted into the second eccentric wheel and the insertion groove.

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