Elastic diaphragm for a membrane pump

Abstract

The utility model discloses an elastic diaphragm for membrane pump, including diaphragm body, diaphragm body includes piston part, annular seal part and connecting column, piston part and connecting column are located diaphragm body's both sides respectively, be equipped with the deformation part for connecting between piston part and annular seal part, and connecting column is used for through the joint structure and the drive component of outside is jointed, and transmission driving force to drive diaphragm body reciprocating motion. The utility model discloses through setting piston part, annular seal part and deformation part, make in the reciprocating motion process of diaphragm body, can utilize piston part effective guidance liquid flow, conveniently push liquid to water outlet end to improve pumping efficiency, simultaneously through the synergies of deformation part and annular seal part, strengthened the sealing performance and structural stability of diaphragm body in the movement process, still through setting joint structure realizes the quick connection of connecting column and the drive component of outside, not only improved the assembly efficiency, also convenient later -stage maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm pump technology, and in particular to an elastic diaphragm for diaphragm pumps. Background Technology

[0002] For diaphragm pumps, the core working principle is to achieve fluid intake and discharge through the reciprocating motion of an elastic diaphragm. However, current elastic diaphragms are generally flat, resulting in low pumping efficiency during actual operation. Furthermore, existing elastic diaphragms are typically connected and fixed using nuts, screws, and connecting rods, with the connecting rod driving the diaphragm's reciprocating motion. This connection method is cumbersome to assemble, affecting assembly efficiency and hindering later maintenance and replacement. Utility Model Content

[0003] This utility model provides an elastic diaphragm for a diaphragm pump, which aims to overcome the problems existing in the prior art.

[0004] This utility model provides an elastic diaphragm for a diaphragm pump, including a diaphragm body. The diaphragm body includes a piston portion, an annular sealing portion, and a connecting post. The piston portion and the connecting post are respectively located on both sides of the diaphragm body. A deformable portion for connection is provided between the piston portion and the annular sealing portion. The connecting post is used to engage with an external driving component through a snap-fit ​​structure and transmit driving force to drive the diaphragm body to reciprocate.

[0005] In one embodiment, the end face of the piston portion is provided with a first groove that is recessed inward.

[0006] In one embodiment, the first groove is an arc-shaped groove structure, the first groove extends along the radial direction of the diaphragm body, and its groove opening faces the same direction as the movement direction of the piston portion.

[0007] In one embodiment, the first groove is concentrically arranged with the piston portion.

[0008] In one embodiment, the piston portion has a cylindrical structure, and the piston portion and the annular sealing portion are spaced apart and have an annular groove formed thereon.

[0009] In one embodiment, the connecting post protrudes from one side of the diaphragm body, and an annular protrusion for engaging and fixing the driving component is provided on the outer circumferential surface of the connecting post.

[0010] In one embodiment, the annular groove surrounds the piston portion, the deformable portion is disposed at the bottom of the annular groove, and the annular sealing portion surrounds the outside of the annular groove and is connected to the piston portion through the deformable portion.

[0011] In one embodiment, the annular sealing part, the deformable part, the connecting column, and the piston part are integrally molded.

[0012] In one embodiment, the deformable part is an arc-shaped structure, and the two sides of the arc-shaped structure are respectively connected to the bottom of the piston part and the bottom of the annular sealing part; The arc-shaped structure protrudes from the bottom surface of the annular groove and undergoes elastic deformation with the reciprocating motion of the diaphragm body.

[0013] In one embodiment, the connecting post is concentrically arranged with the piston portion, the arc-shaped structure is disposed on the outside of the connecting post, and an installation gap for connecting an external drive component is formed between the arc-shaped structure and the connecting post.

[0014] This embodiment of the invention, by providing a piston portion, an annular sealing portion, and a deformable portion on the diaphragm body, enables the piston portion to effectively guide the liquid flow during the reciprocating motion of the diaphragm body, facilitating the liquid to be pushed to the outlet end, thereby improving pumping efficiency. Simultaneously, the synergistic effect of the deformable portion and the annular sealing portion enhances the sealing performance and structural stability of the diaphragm body during movement. Furthermore, this embodiment also incorporates a snap-fit ​​structure to achieve rapid connection between the connecting column and external drive components, improving assembly efficiency and facilitating subsequent maintenance and replacement. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of an elastic diaphragm for a diaphragm pump provided in an embodiment of this utility model; Figure 2 A side view of an elastic diaphragm for a membrane pump provided for an embodiment of this utility model; Figure 3 A cross-sectional view of an elastic diaphragm for a diaphragm pump provided for an embodiment of this utility model; Figure 4 An example diagram of an elastic diaphragm for a membrane pump provided in an embodiment of this utility model.

[0017] Markings in the image: 10. Diaphragm body; 11. Piston part; 12. First groove; 13. Connecting post; 14. Annular protrusion; 15. Annular groove; 16. Annular sealing part; 17. Deformable part; 20. External drive component; 30. Pump body. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0022] Please see below. Figures 1-4 The present invention provides an elastic diaphragm for a diaphragm pump, specifically including a diaphragm body 10. The diaphragm body 10 includes a piston portion 11, an annular sealing portion 16, and a connecting post 13. The piston portion 11 and the connecting post 13 are respectively located on both sides of the diaphragm body 10. A deformable portion 17 for connection is provided between the piston portion 11 and the annular sealing portion 16. The connecting post 13 is used to engage with an external driving component 20 through a snap-fit ​​structure and transmit driving force to drive the diaphragm body 10 to reciprocate.

[0023] In this embodiment, by providing a piston portion 11, an annular sealing portion 16, and a deformable portion 17 on the diaphragm body 10, the piston portion 11 can effectively guide the liquid flow during the reciprocating motion of the diaphragm body 10, making it easier to push the liquid to the outlet end, thereby improving the pumping efficiency.

[0024] Meanwhile, this embodiment achieves an elastic connection between the annular sealing part 16 and the piston part 11 by setting the deformable part 17, so that the annular sealing part 16 can move synchronously with the piston part 11 during the reciprocating motion of the diaphragm body 10. Based on the elastic deformation capability of the deformable part 17 itself, the annular sealing part 16 can adapt to the inner wall contour (sealing surface) of the pump body 30 during the reciprocating motion, and closely fit the sealing surface of the pump body 30, thereby enhancing the sealing performance and structural stability of the diaphragm body 10 during the motion, effectively preventing liquid leakage and improving sealing performance.

[0025] In addition, this embodiment also achieves quick connection between the connecting post 13 and the external driving component 20 by setting a snap-fit ​​structure, which not only improves assembly efficiency, but also facilitates later maintenance and replacement.

[0026] In one embodiment, the end face of the piston portion 11 is provided with a first groove 12 formed by inward indentation. In this embodiment, the first groove 12 facilitates the concentration of liquid and guides the liquid to the outlet end under the push of the piston portion 11, thereby further improving the pumping efficiency.

[0027] In one embodiment, the first groove 12 is an arc-shaped groove structure. The first groove 12 extends along the radial direction of the diaphragm body 10, and its groove opening faces the same direction as the movement direction of the piston portion 11.

[0028] Preferably, the first groove 12 is concentrically arranged with the piston portion 11.

[0029] In this embodiment, the first groove 12 of the arc-shaped groove structure can better concentrate the liquid in the first groove 12, and with the reciprocating motion of the diaphragm body 10, the liquid is efficiently pushed to the outlet end, improving the pumping capacity. In addition, the concentric arrangement of the first groove 12 and the piston part 11 in this embodiment allows the liquid to be pushed to the outlet end more stably after being concentrated, avoiding the liquid from becoming disordered or dispersed during the pushing process.

[0030] In one embodiment, the piston portion 11 has a cylindrical structure, and the piston portion 11 and the annular sealing portion 16 are spaced apart and an annular groove 15 is formed therein.

[0031] In this embodiment, by providing an annular groove 15 between the piston part 11 and the annular sealing part 16, and setting the annular groove 15 to match the shape of the inner wall of the cavity, the piston part 11 can extend into the pump cavity to reciprocate during use, thereby increasing the stroke of the piston part 11, thereby increasing the pumping capacity of the pump body and improving the pumping efficiency while ensuring the diaphragm sealing performance.

[0032] It is understandable that the annular groove 15 is formed by recessing downward from the top of the diaphragm body 10, and its depth can be adjusted according to actual needs to ensure that the thickness of the deformable part 17 is moderate, which ensures the elastic deformation capability of the diaphragm body 10 during the movement, and does not affect the structural strength due to being too thin. It also ensures that the deformable part 17 has sufficient deformation space when the piston part 11 of the water pushing part reciprocates, so as to drive the annular sealing part 16 to fit tightly against the inner wall of the pump body 30 and achieve a dynamic sealing effect.

[0033] In one embodiment, the connecting post 13 protrudes from one side of the diaphragm body 10, and the outer circumferential surface of the connecting post 13 is provided with an annular protrusion 14 for engaging and fixing the external driving component 20.

[0034] In this embodiment, by protruding the connecting post 13 on the diaphragm body 10 and providing an annular protrusion 14 on its outer circumferential surface, it is more conducive to assembly, so that the external driving component 20 can be stably connected through the snap-fit ​​structure, thereby improving the reliability of the connection and the stability of the transmission of driving force.

[0035] In one embodiment, an annular groove 15 is provided around the piston portion 11, a deformable portion 17 is provided at the bottom of the annular groove 15, and an annular sealing portion 16 is provided around the outside of the annular groove 15 and connected to the piston portion 11 through the deformable portion 17.

[0036] In this embodiment, the piston part 11 and the annular sealing part 16 are separated by the annular groove 15, and the two are elastically connected by the deformable part 17, so that the annular sealing part 16 can move synchronously with the piston part 11 during the reciprocating motion of the diaphragm body 10.

[0037] In one embodiment, the deformable part 17 has an arc-shaped structure, and the two sides of the arc-shaped structure are respectively connected to the bottom of the piston part 11 and the bottom of the annular sealing part 16; The arc-shaped structure protrudes from the bottom surface of the annular groove 15 and undergoes elastic deformation with the reciprocating motion of the diaphragm body 10.

[0038] In this embodiment, the arc-shaped deformable part 17 can generate good elastic deformation capability when the diaphragm body 10 moves, so that it can generate corresponding deformation according to the change of the sealing surface during the water pushing process, and automatically adjust the position of the annular sealing part 16 to ensure that the annular sealing part 16 is always tightly attached to the sealing surface of the pump body 30, thereby improving the reliability and adaptability of the seal.

[0039] In one embodiment, the connecting post 13 and the piston portion 11 are concentrically arranged, and an arc-shaped structure is provided on the outside of the connecting post 13, and an installation gap for connecting the external drive component 20 is formed between the arc-shaped structure and the connecting post 13.

[0040] In this embodiment, the connecting post 13 and the piston part 11 are concentrically arranged, making the overall structure more symmetrical and stable, thereby improving the balance and consistency of the diaphragm body 10 during movement. At the same time, the arc-shaped structure is provided on the outside of the connecting post 13. By forming an installation gap between the arc-shaped structure and the connecting post 13, the external drive component 20 can be embedded and engaged with the annular protrusion 14 on the connecting post 13, ensuring a stable connection between the drive component and the diaphragm body 10.

[0041] In one embodiment, the annular sealing part 16, the deformable part 17, the connecting post 13, and the piston part 11 are integrally molded. This embodiment integrates the annular sealing part 16, the deformable part 17, the connecting post 13, and the piston part 11 through an integral molding process, which not only simplifies the assembly process and reduces production costs, but also improves the precision and consistency of the overall structure.

[0042] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0043] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An elastic diaphragm for a diaphragm pump, characterized in that, The diaphragm body (10) includes a piston part (11), an annular sealing part (16) and a connecting post (13). The piston part (11) and the connecting post (13) are located on both sides of the diaphragm body (10). A deformable part (17) for connection is provided between the piston part (11) and the annular sealing part (16). The connecting post (13) is used to engage with an external driving component (20) through a snap-fit ​​structure and transmit driving force to drive the diaphragm body (10) to reciprocate.

2. The elastic diaphragm for a diaphragm pump according to claim 1, characterized in that, The piston portion (11) has a first groove (12) formed by inward recess on its end face.

3. The elastic diaphragm for a diaphragm pump according to claim 2, characterized in that, The first groove (12) is an arc-shaped groove structure. The first groove (12) extends along the radial direction of the diaphragm body (10), and its groove opening faces the same direction as the movement direction of the piston part (11).

4. The elastic diaphragm for a diaphragm pump according to claim 2, characterized in that, The first groove (12) is concentrically arranged with the piston part (11).

5. The elastic diaphragm for a diaphragm pump according to claim 1, characterized in that, The piston part (11) has a cylindrical structure, and the piston part (11) and the annular sealing part (16) are spaced apart and an annular groove (15) is formed therein.

6. The elastic diaphragm for a diaphragm pump according to claim 1, characterized in that, The connecting post (13) protrudes from one side of the diaphragm body (10), and the outer circumferential surface of the connecting post (13) is provided with an annular protrusion (14) for snapping and fixing the driving component (20).

7. The elastic diaphragm for a diaphragm pump according to claim 5, characterized in that, The annular groove (15) is provided around the piston part (11), the deformable part (17) is provided at the bottom of the annular groove (15), and the annular sealing part (16) is surrounded on the outside of the annular groove (15) and connected to the piston part (11) through the deformable part (17).

8. The elastic diaphragm for a diaphragm pump according to claim 7, characterized in that, The annular sealing part (16), the deformable part (17), the connecting column (13) and the piston part (11) are made by integral molding.

9. The elastic diaphragm for a diaphragm pump according to claim 8, characterized in that, The deformable part (17) is an arc-shaped structure, and the two sides of the arc-shaped structure are respectively connected to the bottom of the piston part (11) and the bottom of the annular sealing part (16); The arc-shaped structure protrudes from the bottom surface of the annular groove (15) and undergoes elastic deformation with the reciprocating motion of the diaphragm body (10).

10. The elastic diaphragm for a diaphragm pump according to claim 9, characterized in that, The connecting column (13) is concentrically arranged with the piston part (11), the arc-shaped structure is arranged on the outside of the connecting column (13), and an installation gap for connecting the external drive component (20) is formed between the arc-shaped structure and the connecting column (13).

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