Diaphragm structure for diaphragm pump, diaphragm assembly and diaphragm pump

Abstract

The utility model discloses a diaphragm structure used for a diaphragm pump, a diaphragm assembly and the diaphragm pump. The diaphragm structure used for the diaphragm pump comprises a diaphragm body and an outer flange which is formed by bending and extending from the periphery of the diaphragm body in the axial direction. The film body and the outer flanging are of an integrated structure, the outer diameter D of the integrated structure formed by the film body and the outer flanging is larger than or equal to 104.5 mm and smaller than or equal to 105.5 mm; wherein the outer flanging is used for being inserted into a cavity of the diaphragm pump, and the radial width of the outer flanging is matched with the width of the cavity.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a diaphragm structure, diaphragm assembly and diaphragm pump for a diaphragm pump. Background Technology

[0002] A diaphragm pump uses a diaphragm to separate the pumped liquid from the piston and cylinder, thus protecting the piston and cylinder. The left side of the diaphragm, which is in contact with the liquid, is made of corrosion-resistant material or coated with a corrosion-resistant substance; the right side of the diaphragm is filled with water or oil.

[0003] Currently, the diaphragm structure of diaphragm pumps is prone to popping out after installation, has an irregular shape, and is difficult to remove after installation.

[0004] The above content is only used to help understand the technical solution of this utility model and does not represent an admission that the above content is prior art. Utility Model Content

[0005] The main objective of this invention is to provide a diaphragm structure, diaphragm assembly, and diaphragm pump for use in diaphragm pumps, aiming to solve the problems in the prior art where the diaphragm structure of current diaphragm pumps is prone to popping out after installation, has an irregular shape, and is difficult to remove after installation.

[0006] To achieve the above objectives, this utility model provides a diaphragm structure for a diaphragm pump, the diaphragm structure for the diaphragm pump including a membrane body and an outward flange formed by bending and extending axially from the outer periphery of the membrane body;

[0007] The membrane body and the outer flange are an integral structure, and the outer diameter of the integral structure formed by the membrane body and the outer flange is D, 104.5mm≤D≤105.5mm;

[0008] The outer flange is used to insert into the cavity of the diaphragm pump, and the radial width of the outer flange matches the width of the cavity.

[0009] Preferably, in the diaphragm structure for the diaphragm pump, the radial width H of the outwardly turned edge is 4.2mm ≤ H ≤ 5.25mm.

[0010] Preferably, in the diaphragm structure for the diaphragm pump, the end edge of the outwardly flanged edge has an abutting portion for abutting against the inner wall of the cavity, and the abutting portion forms a seal after abutting against the inner wall of the cavity;

[0011] The contact portion is square, arc-shaped, or triangular.

[0012] Preferably, in the diaphragm structure for the diaphragm pump, a support member is installed at the middle position of the membrane body, the support member extends axially, and the outer surface of the support member is provided with external threads.

[0013] Preferably, in the diaphragm structure for the diaphragm pump, the membrane body has a first surface located on the same side as the outward flange, and the first surface has a mounting boss extending outward near the middle position;

[0014] The support member is mounted on the mounting boss.

[0015] Preferably, in the diaphragm structure for the diaphragm pump, the outer surface of the mounting boss is provided with a plurality of first reinforcing ribs, which extend radially along the surface of the mounting boss.

[0016] Preferably, in the diaphragm structure for the diaphragm pump, the first surface has a second reinforcing rib at the position between the mounting boss and the outward flange, the second reinforcing rib extending circumferentially.

[0017] Preferably, in the diaphragm structure for the diaphragm pump, the first surface has a plurality of third reinforcing ribs at the position between the mounting boss and the outward flange, the plurality of third reinforcing ribs extending radially and arranged at intervals along the circumference.

[0018] To achieve the above objectives, the present invention also provides a diaphragm assembly, the diaphragm assembly including the diaphragm structure for a diaphragm pump as described above.

[0019] To achieve the above objectives, the present invention also provides a diaphragm pump, which includes the diaphragm assembly described above.

[0020] This utility model has at least the following beneficial effects:

[0021] The present invention provides a diaphragm structure for a diaphragm pump, comprising a membrane body and an outer flange formed by axial bending and extending from the outer periphery of the membrane body; the membrane body and the outer flange are an integral structure, and the outer diameter of the integral structure formed by the membrane body and the outer flange is D, 104.5mm≤D≤105.5mm; wherein, the outer flange is used to insert into the cavity of the diaphragm pump, and the radial width of the outer flange matches the width of the cavity. The diaphragm structure provided in this way is not easy to pop out after installation, has a regular shape, and is easy to remove after installation.

[0022] Furthermore, by setting an outward-flared edge, during the installation of the diaphragm structure for the diaphragm pump, since the corresponding position of the diaphragm pump has a cavity with a groove, the outward-flared edge can be accommodated in the groove and pressed tightly from top to bottom. This not only prevents the diaphragm structure for the diaphragm pump from coming out, but also facilitates installation and removal through the insertion of the outward-flared edge. The outer diameter of the integral structure formed by the membrane body and the outward-flared edge is D, 104.5mm≤D≤105.5mm. Thus, when the outward-flared edge is installed in the groove, it can be precisely locked into the groove on the cavity. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an embodiment of the diaphragm structure for a diaphragm pump provided by the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the diaphragm structure used in a diaphragm pump from another perspective;

[0025] Figure 3 for Figure 1 A cross-sectional view of the diaphragm structure used in diaphragm pumps.

[0026] Serial Number name Serial Number name 100 Diaphragm structure for diaphragm pumps 13 Second reinforcing rib 1 membrane body 14 Third reinforcing rib 11 First surface 2 Outward flange 12 Install boss 21 Butt part 121 First reinforcing rib 3 Support components

[0027] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0029] In this embodiment of the invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] In this embodiment of the invention, the term "multiple" refers to two or more, and other quantifiers are similar.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] Figures 1 to 3 An embodiment of the diaphragm structure for a diaphragm pump provided by this invention is illustrated. Please refer to [link / reference]. Figures 1 to 3 This utility model provides a diaphragm structure 100 for a diaphragm pump. The diaphragm structure 100 for the diaphragm pump includes a membrane body 1 and an outer flange 2 formed by bending and extending axially from the outer periphery of the membrane body 1. The membrane body 1 and the outer flange 2 are integral structures, and the outer diameter of the integral structure formed by the membrane body 1 and the outer flange 2 is D, 104.5mm≤D≤105.5mm. The outer flange 2 is used to be inserted into the cavity of the diaphragm pump, and the radial width of the outer flange 2 matches the width of the cavity.

[0034] This invention, by providing an outward-flared edge 2, allows for easy installation of the diaphragm structure 100 for the diaphragm pump. Since the diaphragm pump has a corresponding cavity with a groove, the outward-flared edge 2 can be accommodated within the groove and pressed tightly together. This prevents the diaphragm structure 100 from detaching and facilitates easy installation and removal through the insertion of the outward-flared edge 2. The outer diameter D of the integral structure formed by the membrane body 1 and the outward-flared edge 2 is 104.5mm ≤ D ≤ 105.5mm. Thus, when the outward-flared edge 2 is installed in the groove, it fits precisely into the groove on the cavity.

[0035] Specifically, the outer flange 2 can be bent and extended axially from the outer periphery of the membrane body 1, that is, the outer flange 2 extends axially and has the same outer diameter; or the outer flange 2 can be gradually narrowed axially. In this embodiment, the outer flange extends axially from the outer periphery of the membrane body 1 and has a uniform outer diameter.

[0036] When the outer diameter of the integral structure formed by the membrane body 1 and the outer flange 2 is too large, it will affect the installation of the outer flange 2 into the groove on the cavity; when the outer diameter of the integral structure formed by the membrane body 1 and the outer flange 2 is too small, when the membrane structure 100 used for the diaphragm pump is installed into the groove on the cavity, it will affect the sealing performance between the outer flange 2 and the inner wall of the groove on the cavity; in addition, it will also affect the stability of the installation and make it easy to shift.

[0037] More specifically, the shape of the outer flange 2 can be adapted to the inner wall of the groove in the cavity. In this embodiment, the radial width H of the outer flange 2 is 4.2mm ≤ H ≤ 5.25mm. Furthermore, when the radial width of the outer flange 2 is greater than 5.25mm, the outer flange 2 cannot be installed into the groove of the cavity; when the radial width of the outer flange 2 is less than 4.2mm, the outer flange 2, after being installed into the groove of the cavity, will have insufficient sealing or be prone to displacement.

[0038] The outer flange 2 has an abutment portion 21 for abutting against the inner wall of the cavity, which forms a seal after abutting against the inner wall of the cavity. The abutment portion 21 can have various shapes, such as square, arc-shaped, or triangular.

[0039] Taking the square shape of the contact part 21 as an example, the outer flange 2 can be an integral square structure, and the square structure abuts against the inner wall of the cavity to form a seal; the outer flange 2 can also be multiple square structures arranged radially at intervals, and the multiple square structures abut against the inner wall of the cavity to form a seal. In this case, the multiple square structures form a multiple seal, which can effectively improve the reliability of the seal.

[0040] In other embodiments, the abutment portion 21 may also be formed by a combination of various shapes, with multiple abutment portions 21 of different shapes arranged radially at intervals.

[0041] A support member 3 is installed at the middle position of the membrane body 1. The support member 3 extends axially and has external threads on its outer surface, allowing it to be connected to other components via these threads. More specifically, the membrane body 1 has a first surface 11 located on the same side as the outer flange 2. A mounting boss 12 protrudes outward from the middle position of the first surface 11; the support member 3 is mounted on the mounting boss 12. In other embodiments, the support member 3 may also have an internally threaded hole along its axial direction, allowing it to be connected to other components via the internal threads within the hole.

[0042] More specifically, the mounting boss 12 extends from the first surface 11 in a gradually narrowing manner along the axial direction. The mounting boss 12 has a conical structure, which on the one hand ensures the reliability and stability of the connection of the support member 3; on the other hand, the outer surface of the conical structure is arc-shaped, which can reduce interference with other components.

[0043] Furthermore, to further improve the reliability and stability of the support member 3 and increase the reliability of the connection, the outer surface of the mounting boss 12 is provided with a plurality of first reinforcing ribs 121, which extend radially on the surface of the mounting boss 12. The plurality of first reinforcing ribs 121 are arranged at intervals along the circumference of the mounting boss 12.

[0044] Taking the mounting boss 12 as an example, one end of the first reinforcing rib 121 is located near the top of the conical structure, and the other end is located near the bottom of the conical structure.

[0045] Furthermore, the first surface 11 has a second reinforcing rib 13 at the position between the mounting boss 12 and the outer flange 2, the second reinforcing rib 13 extending circumferentially. To further improve strength, the first surface 11 has a plurality of third reinforcing ribs 14 at the position between the mounting boss 12 and the outer flange 2, the plurality of third reinforcing ribs 14 extending radially and arranged at intervals circumferentially.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, those skilled in the art can make other variations or modifications without creative effort, and all such variations or modifications should fall within the protection scope of this utility model.

Claims

1. A diaphragm structure for a diaphragm pump, characterized by The film body and the turned-up edge are in an integral structure, an outer diameter of the integral structure formed by the film body and the turned-up edge is D, and 104.5 mm≤D≤105.5 mm. The turned-up edge is used for being inserted into a cavity of the diaphragm pump, and a width of the turned-up edge along a radial direction matches a width of the cavity. The width H of the turned-up edge along the radial direction is 4.2 mm≤H≤5.25 mm.

2. The diaphragm structure for a diaphragm pump according to claim 1, characterized in that, An end edge of the turned-up edge has an abutting portion used for abutting against an inner wall of the cavity, and the abutting portion forms a seal after abutting against the inner wall of the cavity.

3. The diaphragm structure for a diaphragm pump according to claim 1, wherein The abutting portion is in a square shape, a circular arc shape, or a triangular shape. A support is installed at a middle position of the film body, the support is arranged along an axial direction, and an outer surface of the support is provided with an external thread.

4. The diaphragm structure for a diaphragm pump according to claim 1, wherein The film body has a first surface located at the same side as the turned-up edge, and the first surface is outwardly protruding at a position close to the middle position to form a mounting boss.

5. The diaphragm structure for a diaphragm pump according to claim 4, wherein The support is installed on the mounting boss. An outer surface of the mounting boss is provided with a plurality of first reinforcing ribs, and the first reinforcing ribs are arranged along a radial direction on the surface of the mounting boss.

6. The diaphragm structure for a diaphragm pump according to claim 5, wherein The first surface has a second reinforcing rib at a position between the mounting boss and the turned-up edge, and the second reinforcing rib extends along a circumferential direction.

7. The diaphragm structure for a diaphragm pump according to claim 5, wherein The first surface has a plurality of third reinforcing ribs at a position between the mounting boss and the turned-up edge, the plurality of third reinforcing ribs extend along a radial direction, and the plurality of third reinforcing ribs are arranged along a circumferential direction at intervals.

8. The diaphragm structure for a diaphragm pump of claim 5, wherein, The diaphragm pump comprises the diaphragm assembly as claimed in claim 9.

9. A diaphragm assembly characterized by, The diaphragm pump comprises the diaphragm assembly as claimed in claim 9.

10. A diaphragm pump characterized in that, ​

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