Pump sealing gasket with high sealing performance

Abstract

The utility model relates to the technical field of sealing gaskets for pumps, and discloses a sealing gasket for pumps with strong sealing performance, which comprises a sealing gasket body, the sealing gasket body comprises a central reinforcing layer and end face sealing layers distributed above and below the central reinforcing layer, and elastic sealing layers are arranged between the upper and lower end face sealing layers and the central reinforcing layer. An inner splicing convex ring and an outer splicing convex ring are arranged at the positions, close to the inner ring and the outer ring, of the upper end faces of the lower end face sealing layer, the center reinforcing layer and each elastic sealing layer respectively, and a plurality of positioning convex strips are evenly arranged on the upper end faces of the lower end face sealing layer, the center reinforcing layer and each elastic sealing layer and located between the inner splicing convex ring and the outer splicing convex ring. According to the sealing gasket with the high sealing performance for the pump, through reasonable selection and structural design of all layers of materials, the excellent sealing effect is guaranteed, the reliability and stability of the sealing gasket in a severe working environment are improved, the sealing gasket can adapt to vibration and temperature changes of the pump, and the service life of the sealing gasket is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pump sealing gasket technical field, concretely is a pump sealing gasket with strong sealing. BACKGROUND

[0002] In the industrial field, the pump is a kind of equipment widely used, for transporting various liquid medium.And pump sealing gasket as the key component for ensuring the sealing of pump, the performance of direct influence the working efficiency and reliability of pump.

[0003] With the continuous development of industrial technology, the sealing performance requirement of pump is higher and higher.However, the existing pump sealing gasket has some deficiencies in practical application.

[0004] On the one hand, the strength and rigidity of some existing pump sealing gasket are insufficient, and it is difficult to withstand large pressure when the pump works, and the sealing gasket is prone to excessive deformation, thereby affecting the sealing effect and reducing the working efficiency of the pump.

[0005] On the other hand, the sealing layer material of part of pump sealing gasket has poor performance, poor corrosion resistance and high temperature resistance, and the sealing effect is difficult to maintain for a long time in harsh working environment, and leakage problem is prone to occur.At the same time, the elasticity and flexibility of some sealing gaskets are insufficient, and the small gap of sealing contact surface cannot be effectively filled, which also affects the sealing performance.

[0006] In addition, the existing pump sealing gasket has defects in the connection structure design between layers, and the connection strength is not enough, which is easy to cause the relative displacement of each layer in the working process, so that the overall structural stability of the sealing gasket decreases, and the sealing effect is further affected.Furthermore, the end face of some sealing gaskets lacks effective protection measures, and is easy to be eroded and damaged by external factors, which reduces the service life of the sealing gasket. INVENTION CONTENTS

[0007] (I) technical problem solved

[0008] In view of the deficiencies of the prior art, the utility model provides a pump sealing gasket with strong sealing to solve the above problems.

[0009] (II) technical scheme

[0010] In order to achieve the above object, the utility model provides the following technical scheme: A kind of sealing gasket for pump with strong sealing, including sealing gasket body, sealing gasket body includes center reinforcing layer and the end face closed layer distributed in its upper and lower, elastic sealing layer is set between upper and lower end face closed layer and center reinforcing layer, lower end end face closed layer, center reinforcing layer and the upper end surface of each elastic sealing layer are close to the position of inner ring and outer ring respectively are provided with inner splicing convex ring and outer splicing convex ring, each inner splicing convex ring and outer splicing convex ring are correspondingly clamped in the inside of the lower end surface of adjacent upper layer structure, lower end end face closed layer, center reinforcing layer and the upper end surface of each elastic sealing layer and between inner splicing convex ring and outer splicing convex ring are evenly provided with several positioning convex strips, and several positioning convex strips of each layer are clamped in adjacent upper layer.

[0011] As the preferred technical scheme of the utility model, the center reinforcing layer is made of stainless steel material.

[0012] As the preferred technical scheme of the utility model, the end face closed layer is made of stainless steel material.

[0013] As the preferred technical scheme of the utility model, the elastic sealing layer is specifically stacked and combined by the first sealing layer and the second sealing layer.

[0014] As the preferred technical scheme of the utility model, the first sealing layer is made of polytetrafluoroethylene material.

[0015] As the preferred technical scheme of the utility model, the second sealing layer is made of butyl rubber material.

[0016] As the preferred technical scheme of the utility model, four bolt holes that pass through up and down are evenly formed on the sealing gasket body.

[0017] As the preferred technical scheme of the utility model, the several positioning convex strips of each layer are distributed towards the radial direction of the layer.

[0018] Compared with the prior art, the utility model provides a kind of sealing gasket for pump with strong sealing, with the following beneficial effects:

[0019] Ensure sealing effect:

[0020] The center reinforcing layer is made of stainless steel material, has outstanding strength and rigidity, can effectively bear the pressure when pump works, prevents sealing gasket excessive deformation, ensures the overall structural stability of sealing gasket, to ensure sealing effect.

[0021] The elastic sealing layer is composed of a first sealing layer made of polytetrafluoroethylene and a second sealing layer made of butyl rubber stacked together.

[0022] The design of the inner splicing convex ring and the outer splicing convex ring enables the layers to be tightly clamped and form a stable overall structure, increases the connection strength between the layers, effectively prevents the leakage of medium from the edge of the sealing gasket, and improves the sealing reliability of the sealing gasket.

[0023] The positioning convex strip further enhances the connection stability between the layers, prevents relative displacement of the layers during operation, and ensures that the sealing performance of the sealing gasket remains in the best state at all times.

[0024] Increase the service life:

[0025] The arrangement of the elastic sealing layer enables the sealing gasket to adapt to the vibration and temperature changes of the pump while ensuring the sealing effect, reduces the damage caused by vibration and temperature changes to the sealing gasket, and improves the service life of the sealing gasket.

[0026] The end face sealing layer is made of stainless steel, which can protect the elastic sealing layer from erosion and damage from external factors, increase the overall wear resistance of the sealing gasket, and prolong the service life of the sealing gasket.

[0027] Ensure stable installation:

[0028] Four up-and-down through bolt holes are evenly arranged on the sealing gasket body, and the sealing gasket is fixed at the sealing part of the pump through bolts, so that the sealing gasket will not loosen or shift during operation, and reliable sealing effect is achieved.

[0029] In summary, the pump sealing gasket with strong sealing property, through the reasonable selection of the materials of the layers and the structural design, not only ensures excellent sealing effect, improves the reliability and stability of the sealing gasket in harsh working environment, but also adapts to the vibration and temperature changes of the pump, prolongs the service life of the sealing gasket. At the same time, the design of the bolt holes ensures the stability of the sealing gasket after installation, providing a reliable guarantee for the normal operation of the pump. The application of this sealing gasket helps to improve the working efficiency of the pump, reduce the maintenance cost, reduce the pollution to the environment caused by leakage, and has important practical application value and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 It is a structural schematic view of the utility model;

[0031] Fig. 2 It is an explosion separation view of the utility model;

[0032] Fig. 3 The elastic sealing layer is exploded separately.

[0033] 1, sealing gasket body; 2, bolt hole;

[0034] 11, center reinforcing layer; 12, elastic sealing layer; 13, end face sealing layer; 14, inner splicing convex ring; 15, outer splicing convex ring; 16, positioning convex strip;

[0035] 121, first sealing layer; 122, second sealing layer. DETAILED DESCRIPTION

[0036] The utility model will be combined with the drawings and examples to make further detailed description, obviously, the described example is only a part of the utility model example, rather than all the examples. In the case of no conflict, the example in the application and the characteristics in the example can be combined with each other. Based on the example in the utility model, all other examples obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0037] It should be noted that if the utility model example has involved directionality indication (such as up, down, left, right, front, back……), the directionality indication is only used to explain the relative position relationship, movement condition etc. between the components in a certain specific posture (as shown in the drawing), if the specific posture changes, then the directionality indication also changes accordingly.

[0038] In addition, "a plurality of" refers to two or more. In addition, the technical solutions of each example can be combined with each other, but it must be based on that the ordinary skill in the art can be realized, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not in the protection scope required by the utility model.

[0039] Please refer to Figs. 1-3 A pump sealing gasket with strong sealing, the sealing gasket body 1 is mainly composed of center reinforcing layer 11, elastic sealing layer 12 and end face sealing layer 13. The center reinforcing layer 11 is made of stainless steel material, has excellent strength and rigidity, can effectively bear the pressure generated when the pump works, prevents the sealing gasket from excessive deformation, so as to ensure the overall structural stability of the sealing gasket.

[0040] The elastic sealing layer 12 located above and below the center reinforcing layer 11 is composed of a first sealing layer 121 made of polytetrafluoroethylene and a second sealing layer 122 made of butyl rubber. The first sealing layer 121 has excellent corrosion resistance and high temperature resistance, and can maintain good sealing effect in harsh working environment; the second sealing layer 122 has good elasticity and flexibility, and can effectively fill the small gap of the sealing contact surface, further improving the sealing performance. The setting of the elastic sealing layer 12 enables the sealing gasket to adapt to the vibration and temperature change of the pump while ensuring the sealing effect, thereby prolonging the service life of the sealing gasket.

[0041] The end face closing layer 13 made of stainless steel is arranged above and below the elastic sealing layer 12. The end face closing layer 13 can protect the elastic sealing layer 12 from erosion and damage from external factors, and can also increase the overall wear resistance of the sealing gasket, thereby prolonging the service life of the sealing gasket.

[0042] The inner splicing convex ring 14 and the outer splicing convex ring 15 are arranged on the lower end face closing layer 13, the center reinforcing layer 11 and the upper end face of each elastic sealing layer 12 near the inner ring and the outer ring. The design of these splicing convex rings enables the layers to be tightly clamped together to form a stable overall structure. The cooperation of the inner splicing convex ring 14 and the outer splicing convex ring 15 not only increases the connection strength between the layers, but also effectively prevents the medium from leaking from the edge of the sealing gasket, thereby improving the sealing reliability of the sealing gasket.

[0043] In addition, a plurality of positioning ribs 16 are evenly arranged between the inner splicing convex ring 14 and the outer splicing convex ring 15 on the lower end face closing layer 13, the center reinforcing layer 11 and the upper end face of each elastic sealing layer 12. The positioning ribs 16 are distributed in the radial direction of the layer and are clamped in the adjacent upper layer. The positioning ribs 16 further enhance the connection stability between the layers, prevent relative displacement of the layers during operation, and ensure that the sealing performance of the sealing gasket always remains in the best state.

[0044] Four upper and lower through bolt holes 2 are evenly arranged on the sealing gasket body 1. The sealing gasket is fixed on the sealing part of the pump through bolts, so that the sealing gasket will not loosen or shift during operation, thereby realizing reliable sealing effect.

[0045] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0046] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0047] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A pump sealing gasket with strong sealing performance, comprising a sealing gasket body (1), characterized in that: The sealing gasket (1) includes a central reinforcing layer (11) and end face sealing layers (13) distributed above and below it. An elastic sealing layer (12) is provided between the upper and lower end face sealing layers (13) and the central reinforcing layer (11). An inner splicing protrusion (14) and an outer splicing protrusion (15) are respectively provided on the upper end face of the lower end face sealing layer (13), the central reinforcing layer (11) and each elastic sealing layer (12) near the inner and outer rings. Each inner splicing protrusion (14) and outer splicing protrusion (15) is correspondingly engaged with the interior of the lower end face of the adjacent upper structure. A number of positioning protrusions (16) are evenly provided on the upper end face of the lower end face sealing layer (13), the central reinforcing layer (11) and each elastic sealing layer (12) between the inner splicing protrusions (14) and the outer splicing protrusions (15). Each layer of several positioning protrusions (16) is engaged with the adjacent upper layer.

2. The pump sealing gasket with strong sealing performance according to claim 1, characterized in that: The central reinforcing layer (11) is made of stainless steel.

3. The pump sealing gasket with strong sealing performance according to claim 1, characterized in that: The end-face sealing layer (13) is made of stainless steel.

4. The pump sealing gasket with strong sealing performance according to claim 1, characterized in that: The elastic sealing layer (12) is specifically composed of a first sealing layer (121) and a second sealing layer (122) stacked on top of each other.

5. A pump sealing gasket with strong sealing performance according to claim 4, characterized in that: The first sealing layer (121) is made of polytetrafluoroethylene.

6. A pump sealing gasket with strong sealing performance according to claim 4, characterized in that: The second sealing layer (122) is made of butyl rubber.

7. A pump sealing gasket with strong sealing performance according to claim 1, characterized in that: The sealing gasket (1) has four bolt holes (2) that are evenly distributed vertically.

8. A pump sealing gasket with strong sealing performance according to claim 1, characterized in that: Each layer has several positioning protrusions (16) distributed in the radial direction of that layer.

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