Flange type diaphragm valve diaphragm pad

Abstract

The utility model belongs to the technical field of valve parts, and particularly relates to a flange type diaphragm valve diaphragm pad which comprises a diaphragm pad body, and a plurality of fixing holes evenly distributed along the circumference are arranged on the outer edge of the diaphragm pad body. The outer supporting sheet is arranged on the outer side of the membrane pad body; wherein the film pad body is composed of an inner flange contact part and an inner arc top, and the fixing hole is formed in the inner flange contact part.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve parts, and in particular relates to a flange type diaphragm valve membrane pad. Background Art

[0002] The flange type diaphragm valve is a stop valve that uses a diaphragm as a start and close member to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. The diaphragm is usually made of elastic, corrosion-resistant, and non-permeable materials such as rubber and plastic. The valve body is mostly made of plastic, fiberglass, ceramic or metal lining rubber materials. It has a simple structure, good sealing and corrosion resistance, and low fluid resistance. It is used for low-pressure, low-temperature, highly corrosive media and media containing suspended matter.

[0003] When using a diaphragm valve, the membrane pad needs to be compressed to deform it and thus achieve the effect of opening or closing the valve. However, the existing membrane pad is usually a single-layer structure with poor strength. The membrane pad is easily damaged when subjected to long-term deformation. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provide a flange type diaphragm valve membrane pad with simple structure, high strength and long service life.

[0005] In view of this, the utility model provides a flange type diaphragm valve membrane pad, comprising:

[0006] The membrane pad body has a plurality of fixing holes evenly distributed along the circumference arranged on the outer edge of the membrane pad body;

[0007] An outer support sheet is provided on the outer side of the membrane pad body;

[0008] The membrane pad body is composed of an inner flange contact portion and an inner arc top portion, and the fixing hole is arranged on the inner flange contact portion.

[0009] In the above technical solution, further, the outer support sheet includes:

[0010] A support ring, the support ring being arranged on the contact portion of the inner flange;

[0011] The reinforcement ring is integrally formed with the support ring and is covered on the top of the inner arc.

[0012] In the above technical solution, further, a groove for accommodating the support ring is provided on the inner flange contact portion of the membrane pad body.

[0013] In the above technical solution, further, the reinforcing ring includes:

[0014] An annular portion, the annular portion is located at the top center of the inner arc top;

[0015] The connecting parts are evenly distributed along the circumference, one end of the connecting part is integrally formed with the annular part, and the other end of the connecting part is integrally formed with the supporting ring.

[0016] In the above technical solution, further, the connecting portion includes:

[0017] Connecting ribs, two connecting ribs are respectively arranged on the supporting ring and the annular portion, and the two connecting ribs are staggered;

[0018] Arc-shaped reinforcement: The arc-shaped reinforcement is formed by connecting several arc-shaped segments end to end, and the two ends of the arc-shaped reinforcement are respectively connected to two connecting reinforcements.

[0019] In the above technical solution, further, it also includes:

[0020] The outer membrane layer is arranged on the outer side of the outer supporting sheet and is attached to the outer supporting sheet, and the outer edge of the outer membrane layer is fixedly connected to the membrane pad body; and the fixing hole passes through the outer membrane layer.

[0021] In the above technical solution, further, the reinforcing ring also includes:

[0022] The reduction grooves are evenly distributed on the reduction grooves, and the reduction grooves are located on the annular portion.

[0023] In the above technical solution, further, a connecting block extending into the reduction groove and fixedly connected to the membrane pad body is formed on the outer membrane layer.

[0024] The beneficial effects of the utility model are:

[0025] 1. The outer support sheet provides good support for the membrane pad body and bears part of the pressure, thereby ensuring the structural strength of the membrane pad body;

[0026] 2. Double-layer protection is achieved by setting up the outer film layer, which can further increase the service life of the membrane pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the middle membrane pad body and the outer support sheet of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the cooperation between the outer support sheet and the outer film layer in the utility model;

[0031] The markings in the figure are as follows: 1-membrane pad body, 1a-inner flange contact portion, 1b-inner arc top, 2-fixing hole, 3-support ring, 4-groove, 5-annular portion, 6-connecting rib, 7-arc rib, 8-outer membrane layer, 9-reduction groove, 10-connecting block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0033] Embodiment 1:

[0034] This embodiment provides a flange-type diaphragm valve membrane pad, including:

[0035] A membrane pad body 1, the outer edge of which is provided with a plurality of fixing holes 2 evenly distributed along a circumference;

[0036] An outer support sheet is provided on the outer side of the membrane pad body 1;

[0037] The membrane pad body 1 is composed of an inner flange contact portion 1a and an inner arc top portion 1b, and the fixing hole 2 is arranged on the inner flange contact portion 1a.

[0038] In this embodiment, the outer support sheet provides good support for the membrane pad body 1, thereby dispersing a portion of the force on the membrane pad body 1 to increase the overall service life of the membrane pad body 1, and the outer support sheet and the membrane pad body 1 are fixedly connected by an adhesive; and the fixing hole 2 also passes through the outer support sheet, thereby preventing the outer support sheet from sliding and detaching after the membrane pad is fixed.

[0039] Embodiment 2:

[0040] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0041] The outer support sheet includes:

[0042] A support ring 3, the support ring 3 is arranged on the inner flange contact portion 1a;

[0043] The reinforcement ring is integrally formed with the support ring 3 and is covered on the top 1b of the inner arc.

[0044] In this embodiment, the cross-sectional diameter of the support ring 3 is slightly smaller than the support ring 3, which can facilitate connection with the inner flange contact portion 1a through the support ring 3, and the provision of the reinforcement ring can improve the support for the inner arc top 1b, thereby ensuring the overall structural strength of the membrane pad, and the fixing hole 2 passes through the support ring 3 of the outer support sheet; wherein the outer support sheet is made of elastic engineering plastic, thereby ensuring its good elasticity and support effect.

[0045] Embodiment 3:

[0046] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0047] A groove 4 for accommodating the support ring 3 is provided on the inner flange contact portion 1 a of the membrane pad body 1 .

[0048] In this embodiment, the provision of the groove 4 can improve the connection strength when fixed with the support ring 3, thereby preventing the membrane pad body 1 from being separated from the outer support sheet.

[0049] Embodiment 4:

[0050] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0051] The reinforcement ring includes:

[0052] The annular portion 5 is located at the top center of the inner arc top 1b;

[0053] The connecting parts are evenly distributed along the circumference, and one end of the connecting part is integrally formed with the annular part 5 , and the other end of the connecting part is integrally formed with the supporting ring 3 .

[0054] In this embodiment, the reinforcement ring is used to contact and bear force with the valve flap of the diaphragm valve, thereby preventing the valve flap from being directly subjected to force on the membrane pad body 1, thereby increasing the practical life of the membrane pad body 1; and the provided connecting portion can serve to connect the support ring 3 and the annular portion 5, thereby ensuring that the reinforcement ring does not separate from the support ring 3.

[0055] Embodiment 5:

[0056] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0057] The connection part includes:

[0058] Connecting ribs 6, two connecting ribs 6 are respectively arranged on the supporting ring 3 and the annular portion 5, and the two connecting ribs 6 are staggered;

[0059] The arcuate rib 7 is formed by connecting a plurality of arcuate segments end to end, and the two ends of the arcuate rib 7 are respectively connected to two connecting ribs 6 .

[0060] In this embodiment, the connecting ribs 6 are used to connect to the support ring 3 and the annular portion 5 respectively, and the multiple arc ribs 7 are connected end to end to improve the overall tensile strength of the connecting portion, thereby better supporting and protecting the membrane pad body 1.

[0061] Embodiment 6:

[0062] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0063] Also includes:

[0064] The outer film layer 8 is arranged on the outer side of the outer support sheet and is attached to the outer support sheet, and the outer edge of the outer film layer 8 is fixedly connected to the membrane pad body 1; and the fixing hole 2 passes through the outer film layer 8.

[0065] In this embodiment, the outer membrane layer 8 is arranged on the outside of the outer supporting sheet, so that the overall service life of the membrane pad is further improved through the double-layer membrane pad structure, and when the outer membrane layer 8 or the membrane pad body 1 is damaged, it will not affect the use of the diaphragm valve; and the outer membrane layer 8 is made of corrosion-resistant rubber, and the membrane pad body 1 is made of polytetrafluoroethylene; the middle part of the outer membrane layer 8 is fixedly connected to the outer supporting sheet by an adhesive, and the outer edge is fixedly connected to the membrane pad body 1 by an adhesive.

[0066] Embodiment 7:

[0067] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0068] The reinforcement ring also includes:

[0069] The reduction grooves 9 are uniformly distributed on the reduction grooves 9 , and the reduction grooves 9 are located on the annular portion 5 .

[0070] In this embodiment, the arrangement of the reduction groove 9 reduces the material loss of the outer support sheet while ensuring the stability of the reinforcement ring structure.

[0071] Embodiment 8:

[0072] This embodiment provides a flange-type diaphragm valve membrane pad, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0073] A connecting block 10 is formed on the outer film layer 8 and extends into the reduction groove 9 and is fixedly connected to the membrane pad body 1 .

[0074] In this embodiment, the provision of the connection block 10 can further improve the strength of the connection between the outer film layer 8 and the membrane pad body 1, and the connection block 10 is fixedly connected to the membrane pad body 1 by an adhesive.

[0075] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A flange type diaphragm valve membrane gasket, characterized in that: include: A membrane pad body (1), wherein the outer edge of the membrane pad body (1) is provided with a plurality of fixing holes (2) evenly distributed along a circumference; An outer support sheet is arranged on the outer side of the membrane pad body (1); The membrane pad body (1) is composed of an inner flange contact portion (1a) and an inner arc top portion (1b), and the fixing hole (2) is arranged on the inner flange contact portion (1a).

2. A flange type diaphragm valve membrane pad according to claim 1, characterized in that: The outer support sheet comprises: A support ring (3), wherein the support ring (3) is arranged on the inner flange contact portion (1a); A reinforcement ring is formed integrally with the support ring (3) and is covered on the top of the inner arc (1b).

3. A flange type diaphragm valve membrane pad according to claim 2, characterized in that: A groove (4) for accommodating the support ring (3) is provided on the inner flange contact portion (1a) of the membrane pad body (1).

4. A flange type diaphragm valve membrane pad according to claim 2 or 3, characterized in that: The reinforcement ring comprises: An annular portion (5), wherein the annular portion (5) is located at the top center of the inner arc top (1b); A connecting part, wherein a plurality of the connecting parts are evenly distributed along the circumference, and one end of the connecting part is integrally formed with the annular part (5), and the other end of the connecting part is integrally formed with the supporting ring (3).

5. The flange type diaphragm valve membrane pad according to claim 4, characterized in that: The connecting portion comprises: Connecting ribs (6), wherein the two connecting ribs (6) are respectively arranged on the supporting ring (3) and the annular portion (5), and the two connecting ribs (6) are arranged in a staggered manner; The arc-shaped rib (7) is formed by connecting a plurality of arc-shaped segments end to end, and the two ends of the arc-shaped rib (7) are respectively connected to two connecting ribs (6).

6. A flange type diaphragm valve membrane pad according to claim 5, characterized in that: Also includes: The outer film layer (8) is arranged on the outer side of the outer support sheet and is attached to the outer support sheet, and the outer edge of the outer film layer (8) is fixedly connected to the membrane pad body (1).

7. The flange type diaphragm valve membrane pad according to claim 6, characterized in that: The reinforcement ring further comprises: A reduction groove (9), wherein a plurality of the reduction grooves (9) are evenly distributed on the reduction groove (9), and the reduction groove (9) is located on the annular portion (5).

8. The flange type diaphragm valve membrane pad according to claim 7, characterized in that: The outer film layer (8) is provided with a connecting block (10) which extends into the reduction groove (9) and is fixedly connected to the film pad body (1).

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