A rubber seal for mechanical seals

Abstract

The utility model relates to mechanical seal technical field, and disclose a kind of rubber sealing pad for mechanical seal, including elastic metal wire net assembly, the outer wall rear end of elastic metal wire net assembly is fixedly installed with pedestal, the outer wall front end of elastic metal wire net assembly is fixedly installed with composite elastomer, and the back of composite elastomer is fixedly connected with the front of pedestal, the outer wall of elastic metal wire net assembly is fixedly installed with composite sealing lip in the inside of pedestal, by being provided with elastic metal wire net assembly, composite elastomer and composite sealing lip, the introduction of elastic metal wire net assembly, not only strengthen the overall structural strength of sealing pad, also improve its impact resistance and wear resistance ability, the combined use of composite elastomer and composite sealing lip, so that sealing pad can keep good sealing effect under different working environment, prolong the service life of sealing pad, improve the elasticity and pressure resistance of sealing pad, to enhance the reliability of mechanical seal.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field especially relates to a rubber sealing pad for mechanical seal. BACKGROUND

[0002] Mechanical seal is also called end face seal, which is a kind of device for preventing fluid leakage by at least one pair of end faces perpendicular to rotation axis under the action of fluid pressure and elastic force (or magnetic force) of compensation mechanism and the cooperation of auxiliary seal. Mechanical seal is a kind of shaft seal device of rotating machinery, such as centrifugal pump, centrifuge, reaction kettle and compressor and other equipment. There are many kinds of shaft seals, and mechanical seal has the advantages of less leakage and long service life, so it is the most important shaft sealing mode for these equipment in the world.

[0003] In the technical field of mechanical seal, the traditional rubber sealing pad often has the problems of short service life and unstable sealing effect, and the overall structural strength of the sealing pad is low, which cannot maintain good sealing effect in different environments, shortens the service life of the sealing pad and reduces the elasticity and pressure resistance of the sealing pad.

[0004] Therefore, we provide a rubber sealing pad for mechanical seal. CONTENT OF UTILITY MODEL

[0005] The utility model mainly solves the technical problems of prior art, and provides a rubber sealing pad for mechanical seal.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme, a rubber sealing pad for mechanical seal, including elastic metal wire net assembly, the outer wall rear end of elastic metal wire net assembly is fixedly installed with base, the outer wall front end of elastic metal wire net assembly is fixedly installed with composite elastomer, and the back surface of composite elastomer is fixedly connected with the front surface of base, the outer wall of elastic metal wire net assembly is fixedly installed with composite sealing lip on the inner side of base, and the outer wall of composite sealing lip is fixedly connected with the inner wall of base, the elastic metal wire net assembly includes base metal wire net, and the outer wall of base metal wire net is fixedly connected with the inner wall of base, the composite elastomer includes natural rubber elastic layer, and the back surface of natural rubber elastic layer is fixedly connected with the front surface of base, the composite sealing lip includes fluorine rubber layer, and the outer wall of fluorine rubber layer is fixedly connected with the inner wall of base.

[0007] As preferred, the front surface of the base metal wire net is fixedly installed with the elastomer metal wire net, and the outer wall of the elastomer metal wire net is fixedly connected with the inner wall of the composite elastomer.

[0008] As preferred, the outer wall of the natural rubber elastic layer is fixedly installed with the butadiene rubber elastic layer, and the back surface of the butadiene rubber elastic layer is fixedly connected with the front surface of the base.

[0009] Preferably, the front surface of the fluororubber layer is fixedly installed with a polyurethane layer, and the outer wall of the polyurethane layer is fixedly connected with the inner wall of the base.

[0010] Preferably, the inner wall of the base metal wire mesh is fixedly installed with a sealing lip metal wire mesh, and the outer wall of the sealing lip metal wire mesh is fixedly connected with the inner wall of the composite sealing lip.

[0011] Preferably, the outer wall of the butadiene rubber elastic layer is fixedly installed with a butadiene rubber elastic layer, and the back surface of the butadiene rubber elastic layer is fixedly connected with the front surface of the base.

[0012] Preferably, the front surface of the polyurethane layer is fixedly installed with a modified polytetrafluoroethylene layer, and the outer wall of the modified polytetrafluoroethylene layer is fixedly connected with the inner wall of the base.

[0013] The utility model provides a rubber sealing gasket for mechanical seal. Have the following beneficial effects:

[0014] 1、This kind of rubber sealing gasket for mechanical seal, by setting up elastic metal wire mesh component, composite elastomer and composite sealing lip, the introduction of elastic metal wire mesh component, not only strengthen the overall structural strength of sealing pad, also improved its impact resistance and wear resistance, the combination use of composite elastomer and composite sealing lip, so that sealing pad can keep good sealing effect under different working environment, prolong the service life of sealing pad, improve the elasticity and pressure resistance of sealing pad, to enhance the reliability of mechanical seal.

[0015] 2、This kind of rubber sealing gasket for mechanical seal, by using natural rubber and fluororubber in composite elastomer and composite sealing lip respectively, the excellent performance of different materials is combined, such as the high elasticity of natural rubber and the chemical corrosion resistance of fluororubber, so that the sealing pad can keep good sealing effect in various media.

[0016] 3、This kind of rubber sealing gasket for mechanical seal, by setting up polyurethane layer and modified polytetrafluoroethylene layer, polyurethane layer is set on the outside of composite sealing lip, further improve the wear resistance and oil resistance of sealing lip, ensure the durability of sealing effect, the setting of modified polytetrafluoroethylene layer provides excellent high-temperature resistance and low-temperature resistance for sealing pad, so that it can also keep stable sealing performance under extreme temperature conditions. ACCURACY

[0017] Figure 1 It is the front overall structure schematic view of the utility model;

[0018] Figure 2 It is the front surface structure schematic view of the elastic metal wire mesh component of the utility model;

[0019] Figure 3 The internal structure sectional view of the composite elastic body of the utility model;

[0020] Figure 4 The top structure schematic view of the composite sealing lip of the utility model.

[0021] Legend: 10, elastic metal wire net assembly; 11, base; 12, composite elastic body; 13, composite sealing lip; 14, base metal wire net; 15, elastic body metal wire net; 16, sealing lip metal wire net; 17, natural rubber elastic layer; 18, butadiene rubber elastic layer; 19, butylene rubber elastic layer; 20, fluorine rubber layer; 21, polyurethane layer; 22, modified polytetrafluoroethylene layer. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be derived from the provided drawings without creative labor.

[0023] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions that the utility model can be implemented, so they do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model.

[0024] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0025] In the description of the embodiments of the utility model, it should be explained that the terms "center", "upper", "lower", "inner", "outer", "side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the utility model, still need explaining, unless another explicit provision and limitation, term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the above-mentioned terms can be understood in the embodiment of the utility model specific meaning of the embodiment of the utility model.

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] Embodiment one: a kind of rubber sealing pad for mechanical seal, as shown in Figure Figures 1-2 It includes elastic metal wire net assembly 10, the outer wall rear end of elastic metal wire net assembly 10 is fixedly installed with base 11, the outer wall front end of elastic metal wire net assembly 10 is fixedly installed with composite elastomer 12, and the back of composite elastomer 12 is fixedly connected with the front of base 11, the outer wall of elastic metal wire net assembly 10 is fixedly installed with composite sealing lip 13 in the inside of base 11, and the outer wall of composite sealing lip 13 is fixedly connected with the inner wall of base 11, elastic metal wire net assembly 10 includes base metal wire net 14, and the outer wall of base metal wire net 14 is fixedly connected with the inner wall of base 11, the front of base metal wire net 14 is fixedly installed with elastomer metal wire net 15, and the outer wall of elastomer metal wire net 15 is fixedly connected with the inner wall of composite elastomer 12, the inner wall of base metal wire net 14 is fixedly installed with sealing lip metal wire net 16, and the outer wall of sealing lip metal wire net 16 is fixedly connected with the inner wall of composite sealing lip 13, by setting up elastic metal wire net assembly 10, composite elastomer 12 and composite sealing lip 13, the introduction of elastic metal wire net assembly 10, not only enhances the overall structural strength of sealing pad, also improves its impact resistance and wear resistance, the combination of composite elastomer 12 and composite sealing lip 13 makes sealing pad can maintain good sealing effect under different working environment, prolongs the service life of sealing pad, improves the elasticity and pressure resistance of sealing pad, to enhance the reliability of mechanical seal.

[0029] Embodiment two: on the basis of embodiment one, as shown in Figure Figure 3As shown, the composite elastomer 12 includes a natural rubber elastic layer 17, and the back of the natural rubber elastic layer 17 is fixedly connected to the front of the base 11, the outer wall of the natural rubber elastic layer 17 is fixedly installed with a butadiene rubber elastic layer 18, and the back of the butadiene rubber elastic layer 18 is fixedly connected to the front of the base 11, the outer wall of the butadiene rubber elastic layer 18 is fixedly installed with a butadiene rubber elastic layer 19, and the back of the butadiene rubber elastic layer 19 is fixedly connected to the front of the base 11, by using natural rubber and fluororubber in the composite elastomer 12 and the composite sealing lip 13 respectively, the excellent performance of different materials is combined, such as the high elasticity of natural rubber and the chemical corrosion resistance of fluororubber, so that the sealing gasket can maintain good sealing effect in various media.

[0030] Example three: on the basis of example one and example two, as Figure 4 As shown, the composite sealing lip 13 includes a fluororubber layer 20, and the outer wall of the fluororubber layer 20 is fixedly connected to the inner wall of the base 11, the front of the fluororubber layer 20 is fixedly installed with a polyurethane layer 21, and the outer wall of the polyurethane layer 21 is fixedly connected to the inner wall of the base 11, the front of the polyurethane layer 21 is fixedly installed with a modified polytetrafluoroethylene layer 22, and the outer wall of the modified polytetrafluoroethylene layer 22 is fixedly connected to the inner wall of the base 11, by setting the polyurethane layer 21 and the modified polytetrafluoroethylene layer 22, the polyurethane layer 21 is set on the outside of the composite sealing lip 13, which further improves the wear resistance and oil resistance of the sealing lip, ensures the durability of the sealing effect, and the setting of the modified polytetrafluoroethylene layer 22 provides excellent high-temperature and low-temperature resistance for the sealing gasket, so that it can maintain stable sealing performance under extreme temperature conditions.

[0031] The working principle of the utility model: the elastic metal wire net assembly 10 is used as the support and reinforcing structure, provides the necessary rigidity and strength for the sealing gasket, and ensures that the shape and function can be maintained under mechanical pressure and impact. The combination of the composite elastomer 12 and the composite sealing lip 13 enables the sealing gasket to adapt to and maintain good sealing performance when facing different media and temperature changes. The combination of the natural rubber elastic layer 17 and the fluororubber layer 20 not only provides good elasticity and chemical corrosion resistance, but also ensures the adaptability and reliability of the sealing gasket in various working environments. The addition of the polyurethane layer 21 and the modified polytetrafluoroethylene layer 22 further improves the wear resistance and temperature resistance of the sealing gasket, ensuring the sealing effect under extreme working conditions.

[0032] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A rubber gasket for mechanical seals comprising an elastic wire mesh assembly (10) characterized in that: The outer wall rear end of the elastic metal wire net assembly (10) is fixedly installed with a base (11), the outer wall front end of the elastic metal wire net assembly (10) is fixedly installed with a composite elastomer (12), and the back surface of the composite elastomer (12) is fixedly connected with the front surface of the base (11), the outer wall of the elastic metal wire net assembly (10) is fixedly installed with a composite sealing lip (13) on the inner side of the base (11), and the outer wall of the composite sealing lip (13) is fixedly connected with the inner wall of the base (11), the elastic metal wire net assembly (10) comprises a base metal wire net (14), and the outer wall of the base metal wire net (14) is fixedly connected with the inner wall of the base (11), the composite elastomer (12) comprises a natural rubber elastic layer (17), and the back surface of the natural rubber elastic layer (17) is fixedly connected with the front surface of the base (11), and the composite sealing lip (13) comprises a fluororubber layer (20), and the outer wall of the fluororubber layer (20) is fixedly connected with the inner wall of the base (11).

2. The rubber gasket for mechanical seals according to claim 1, characterized in that: The front surface of the base metal wire net (14) is fixedly installed with an elastomer metal wire net (15), and the outer wall of the elastomer metal wire net (15) is fixedly connected with the inner wall of the composite elastomer (12).

3. The rubber gasket for mechanical seals according to claim 1, characterized in that: The outer wall of the natural rubber elastic layer (17) is fixedly installed with a butadiene rubber elastic layer (18), and the back surface of the butadiene rubber elastic layer (18) is fixedly connected with the front surface of the base (11).

4. The rubber gasket for mechanical seals according to claim 1, characterized in that: The front surface of the fluororubber layer (20) is fixedly installed with a polyurethane layer (21), and the outer wall of the polyurethane layer (21) is fixedly connected with the inner wall of the base (11).

5. The rubber gasket for mechanical seals according to claim 1, characterized in that: The inner wall of the base metal wire net (14) is fixedly installed with a sealing lip metal wire net (16), and the outer wall of the sealing lip metal wire net (16) is fixedly connected with the inner wall of the composite sealing lip (13).

6. The rubber gasket for mechanical seals according to claim 3, characterized in that: The outer wall of the butadiene rubber elastic layer (18) is fixedly installed with a butadiene rubber elastic layer (19), and the back surface of the butadiene rubber elastic layer (19) is fixedly connected with the front surface of the base (11).

7. The rubber gasket for mechanical seals according to claim 4, characterized in that: The front surface of the polyurethane layer (21) is fixedly installed with a modified polytetrafluoroethylene layer (22), and the outer wall of the modified polytetrafluoroethylene layer (22) is fixedly connected with the inner wall of the base (11).

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