CN220396454U

CN220396454U - Double-sealing diaphragm

Info

Publication number: CN220396454U
Application number: CN202322096835.9U
Authority: CN
Inventors: 刘安兵; 张守蕾; 王凯凯
Original assignee: Rizhao Hengtong Water Treatment Equipment Co ltd
Current assignee: Rizhao Hengtong Water Treatment Equipment Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-01-26
Anticipated expiration: 2033-08-07

Abstract

The double-seal diaphragm comprises a PTFE disk arranged on one side, and further comprises a hydrogenated nitrile rubber disk, wherein a hydrogenated nitrile rubber disk is adhered to one side of the PTFE disk, a first convex ring is arranged on one side of the PTFE disk and close to the edge, a first outer edge which is flush with the PTFE disk is arranged on the outer side of the first convex ring, a first groove is formed in the position, corresponding to the first convex ring, of the other side of the PTFE disk, viscose is smeared in the first groove, a second groove is formed in the edge of one side of the hydrogenated nitrile rubber disk, a second convex ring is arranged in the position, corresponding to the second groove, of the other side of the hydrogenated nitrile rubber disk, and a second outer edge which is flush with the middle of the hydrogenated nitrile rubber disk is arranged on the outer side of the second convex ring. The common diaphragm and the Mi Duluo metering pump head have low fitting degree, and the diaphragm can be better combined with the pump head through improvement.

Description

Double-sealing diaphragm

Technical Field

The utility model relates to a diaphragm, in particular to a double-seal diaphragm.

Background

A membrane sheet, also called a diaphragm, is a thin film that is used to separate two different environments. It can act as a barrier to prevent two different liquids or gases from mixing together. The membrane sheets are made of different materials, such as Polyvinylchloride (PVC), polypropylene (PP), polytrifluoroethylene (PTFE), etc. Its main characteristics are its high chemical inertness, corrosion resistance and good sealing. It is commonly used to separate hydrogen and oxygen, separate different solutions, etc. in chemical production. Membrane sheets come in many different shapes and sizes to accommodate different applications and container sizes. Typically, they are round or square, and can vary in diameter and length from a few millimeters to a few meters. In addition to being used to isolate gases and liquids, diaphragm sheets may also be used in instruments such as sensors and control valves. In these applications, they may be used as conductors, allowing gas or liquid to flow through them while remaining separated.

The existing diaphragm sheet has the defect that the adhesion firmness of the rubber disc and the PTFE disc is insufficient; the common diaphragm and Mi Duluo metering pump head have low fitting degree, which is unfavorable for the installation and use of the diaphragm.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the double-seal diaphragm, which effectively solves the problem that the adhesion firmness of the rubber disc and the PTFE disc is insufficient due to the existing diaphragm; the common diaphragm and Mi Duluo metering pump head have low fitting degree, which is unfavorable for the installation and use of the diaphragm.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the PTFE rubber plate comprises a PTFE plate arranged on one side, and further comprises a hydrogenated nitrile rubber plate, wherein the hydrogenated nitrile rubber plate is adhered to one side of the PTFE plate, a first convex ring is arranged on one side of the PTFE plate near the edge, a first outer edge which is flush with the PTFE plate is arranged on the outer side of the first convex ring, a first groove is formed in the position, corresponding to the first convex ring, of the other side of the PTFE plate, viscose is smeared in the first groove, a second groove is formed in the edge of one side of the hydrogenated nitrile rubber plate, a second convex ring is arranged on the other side of the hydrogenated nitrile rubber plate, corresponding to the position of the second groove, and a second outer edge which is flush with the middle of the hydrogenated nitrile rubber plate is arranged on the outer side of the second convex ring.

Preferably, a separation chamber is formed between the PTFE disc and the hydrogenated nitrile rubber disc.

Preferably, the second convex ring is clamped in the first groove.

Preferably, the first groove and the second convex ring have the same shape.

Preferably, the inner diameter and the outer diameter of the first groove are slightly larger than those of the second convex ring.

Preferably, the second convex ring and the first groove are in interference fit and clamped connection, and then are bonded through viscose.

The beneficial effects are that: the utility model has novel structure and ingenious conception, and adopts the hydrogenated nitrile rubber disk, so that the hydrogenated nitrile rubber disk can be firmly adhered to the PTFE disk; the common diaphragm and the Mi Duluo metering pump head have low fitting degree, and the diaphragm can be better combined with the pump head through improvement.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the hydrogenated nitrile rubber disc of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

reference numerals in the drawings: 1. a PTFE disc; 11. a first collar; 12. a first outer edge; 13. a first groove; 14. gluing; 2. hydrogenated nitrile rubber disks; 21. a second groove; 22. a second convex ring; 23. a second outer edge; 3. a separation chamber.

Detailed Description

The following describes embodiments of the present utility model in further detail with reference to FIGS. 1-3.

In a first embodiment, as shown in fig. 1-3, the utility model provides a double-seal diaphragm, which comprises a PTFE disc 1 arranged on one side, and further comprises a hydrogenated nitrile rubber disc 2, wherein the hydrogenated nitrile rubber disc 2 is adhered on one side of the PTFE disc 1, a first convex ring 11 is arranged on one side of the PTFE disc 1 near the edge, a first outer edge 12 flush with the PTFE disc 1 is arranged on the outer side of the first convex ring 11, a first groove 13 is arranged on the other side of the PTFE disc 1 corresponding to the position of the first convex ring 11, an adhesive 14 is smeared in the first groove 13, a second groove 21 is arranged on the edge on one side of the hydrogenated nitrile rubber disc 2, a second convex ring 22 is arranged on the other side of the hydrogenated nitrile rubber disc 2 corresponding to the position of the second groove 21, and a second outer edge 23 flush with the middle part of the hydrogenated nitrile rubber disc 2 is arranged on the outer side of the second convex ring 22.

A separation cavity 3 is formed between the PTFE disk 1 and the hydrogenated nitrile rubber disk 2, so that the PTFE disk 1 and the hydrogenated nitrile rubber disk 2 can be matched for use.

The second convex ring 22 is clamped in the first groove 13, so that the second convex ring 22 can be conveniently clamped.

The first groove 13 and the second convex ring 22 have the same shape, so that the first groove 13 and the second convex ring 22 can be matched for use.

The inner diameter and the outer diameter of the first groove 13 are slightly larger than those of the second convex ring 22, so that the first groove 13 and the second convex ring 22 can be installed in a matched mode.

After the second convex ring 22 is clamped with the first groove 13 in an interference fit manner, the bonding strength of the first groove 13 and the second convex ring 22 is ensured through bonding by viscose.

Working principle: when the PTFE disk is assembled, the adhesive 14 is smeared on the inner surface of the PTFE disk 1 and the outer side edge of the PTFE disk 1, the second convex ring 22 on the hydrogenated nitrile rubber disk 2 is clamped into the first groove 13 of the PTFE disk 1 and is bonded through the adhesive 14, and after the adhesive 14 is dried, the hydrogenated nitrile rubber disk 2 is adopted, so that the hydrogenated nitrile rubber disk 2 can be firmly bonded with the PTFE disk 1; the common diaphragm and the Mi Duluo metering pump head have low fitting degree, and the diaphragm can be better combined with the pump head through improvement.

The beneficial effects are that: the utility model has novel structure and ingenious conception, and adopts the hydrogenated nitrile rubber disc 2, so that the hydrogenated nitrile rubber disc 2 can be firmly adhered to the PTFE disc 1; the common diaphragm and the Mi Duluo metering pump head have low fitting degree, and the diaphragm can be better combined with the pump head through improvement.

All electric parts and the adaptive power supply are connected through wires by the person skilled in the art, and a proper controller and encoder should be selected according to actual conditions so as to meet control requirements, specific connection and control sequence, and the electric connection is completed by referring to the following working principles in the working sequence among the electric parts, and the detailed connection means are known in the art, and mainly introduce the working principles and processes as follows, and do not describe the electric control.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Double containment diaphragm, including PTFE dish (1) that one side set up, its characterized in that: still include hydrogenated nitrile rubber dish (2), the one side of PTFE dish (1) is glued and is pasted and have hydrogenated nitrile rubber dish (2), PTFE dish (1) one side is close to edge and is provided with first bulge loop (11), the outside of first bulge loop (11) is provided with first outside (12) that flushes with PTFE dish (1), first recess (13) have been seted up to PTFE dish (1) opposite side corresponding first bulge loop (11) position department, viscose (14) have been paintd to the inside of first recess (13), second recess (21) have been seted up to the edge of hydrogenated nitrile rubber dish (2) one side, hydrogenated nitrile rubber dish (2) opposite side corresponds second recess (21) position department and is provided with second bulge loop (22), the outside of second bulge loop (22) is provided with second outside (23) that flushes with hydrogenated nitrile rubber dish (2) middle part.

2. The double seal diaphragm of claim 1, wherein: a separation cavity (3) is formed between the PTFE disk (1) and the hydrogenated nitrile rubber disk (2).

3. The double seal diaphragm of claim 1, wherein: the second convex ring (22) is clamped in the first groove (13).

4. The double seal diaphragm of claim 1, wherein: the first groove (13) and the second convex ring (22) have the same shape.

5. The double seal diaphragm of claim 1, wherein: the inner diameter and the outer diameter of the first groove (13) are slightly larger than those of the second convex ring (22).

6. The double seal diaphragm of claim 1, wherein: the second convex ring (22) is clamped with the first groove (13) in an interference fit mode, and then is bonded through viscose.