CN213541306U - Anti-drop valve seat sealing structure - Google Patents

Abstract

The utility model provides an anticreep disk seat seal structure, including valve plate and sealing washer, the sealing washer is platykurtic runway type structure and installs in the valve plate top, install the pressure disk on the sealing washer the upper and lower both sides internal diameter edge of sealing washer respectively is provided with a step, be provided with a plurality of locating holes on the circumference of sealing washer uniformly, be provided with counter bore and screw hole on the pressure disk, the counter bore corresponds installs hexagonal cylinder head bolt and elastic gasket in proper order. The utility model discloses a valve seat sealing washer, especially the dislocation of fastening in-process rubber circle when can effectively avoiding the installation, the condition that the rubber circle erupted when also effectively avoiding inside high pressure simultaneously takes place. The pressure plate is provided with a plurality of counter bores and screw holes, the counter bores are used for compressing screws, and the screws are used for resisting pressing force from the counter bores and the screws to prevent the valve seat from generating permanent deformation.

Description

Anti-drop valve seat sealing structure

Technical Field

The utility model belongs to the technical field of the disk seat is sealed, especially, relate to an anticreep disk seat seal structure.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In mechanical systems, the valve seat device is a very important component, and in many cases, the sealing performance of the valve seat directly affects the working performance and the product quality of the whole system, and poor sealing can cause the whole pipeline system to stop, even cause accidents.

In recent years, as the research on the valve seat sealing technology and the valve seat device has been rapidly developed, the structural shape and the performance quality of the valve seat have been greatly improved, and among the numerous sealing forms, the application of various valve seat sealing members made of rubber as a raw material in practical engineering occupies a large proportion, and the simple original application is the most.

When various elastic valve seat sealing rings are installed, particularly when a static sealing connecting piece is installed, the valve seat sealing rings are required to be clamped in grooves of a pressure plate or a valve body, then the two parts are connected through bolts and the like, and sealing is achieved through elastic deformation of the valve seat.

However, in the first valve seat sealing ring, the sealing ring generates permanent elastic deformation due to over-tight extrusion in the extrusion process, so that the sealing ring fails. The second one is easy to burst out when the pressure inside the second one is high, and the second one can be separated from the groove when being installed, which brings great inconvenience to the installation.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present disclosure provides an anti-drop valve seat sealing structure which can be conveniently installed and does not burst.

In order to achieve the purpose, the following technical scheme is adopted in the disclosure:

a drop-off prevention valve seat sealing structure comprising:

the sealing ring is of a flat runway structure and is arranged above the valve plate, a pressure plate is arranged on the sealing ring, and the inner diameter edges of the upper side and the lower side of the sealing ring are respectively provided with a step.

Furthermore, a plurality of positioning holes are uniformly formed in the circumference of the sealing ring.

Furthermore, a counter bore and a screw hole are arranged on the pressure plate.

Furthermore, the counter bores are correspondingly and sequentially provided with hexagonal cylindrical head bolts and elastic washers.

Furthermore, the screw hole is correspondingly provided with a set screw.

Furthermore, the positioning hole of the sealing ring corresponds to the screw hole of the pressure plate.

Further, the sealing ring is tightly connected with the pressure plate through a set screw penetrating through the positioning hole and the screw hole.

Further, step and sealing washer are integrated into one piece structure

Further, the step of the inner diameter of the valve seat is of an integrally formed structure.

Furthermore, the positioning hole is of an integrally formed structure on the sealing ring.

Further, the sealing ring is made of rubber.

Alternatively,

the sealing ring is characterized in that round platform-shaped bosses are formed on two sides of the sealing ring in an outward protruding mode respectively, the round platform-shaped bosses on one side are correspondingly clamped in grooves of the pressure plate, and the round platform-shaped bosses on the other side are clamped in grooves of the valve plate or the valve body.

The beneficial effects of this disclosure are:

the utility model discloses an anticreep disk seat seal structure, an organic whole formation locating hole on the circle body utilizes the cooperation of locating hole and bolt to add the location effect that the step can effectively improve the sealing washer, especially the dislocation of rubber circle in the fastening process when can effectively avoiding the installation, and the condition that the rubber circle erupted when also can effectively avoid inside high pressure takes place simultaneously. The pressure plate is provided with a plurality of counter bores and screw holes, the counter bores are used for compressing screws, and the screws are used for resisting pressing force from the counter bores and the screws to prevent the valve seat from generating permanent deformation. As a preferred scheme, the two sides of the sealing ring are outwards convexly provided with circular truncated cone-shaped bosses, the circular truncated cone-shaped bosses on one side are correspondingly clamped in the groove of the pressure plate, the other side is clamped in the groove of the valve plate/valve body, and the sealing effect at the bolt hole is improved for improving the contact area at the position of the valve seat sealing ring.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a schematic structural view of an anti-drop valve seat sealing structure provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of the seal ring shown in FIG. 1;

wherein, 1, a sealing ring; 2. a hexagon socket head cap screw; 3. an elastic washer; 4. a platen; 5. a valve plate; 6. and (5) tightening the screw.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

As shown in fig. 1, the anti-drop valve seat sealing structure of the present embodiment includes:

valve plate 5 and sealing washer 1, sealing washer 1 is the platykurtic runway type structure and installs in the valve plate top, install pressure disk 4 on the sealing washer the upper and lower both sides internal diameter edge of sealing washer respectively is provided with a step. A plurality of positioning holes are uniformly formed in the circumference of the sealing ring. And a counter bore and a screw hole are formed in the pressure plate. And the counter bores are correspondingly and sequentially provided with hexagonal cylindrical head bolts and elastic washers 3. The screw holes are correspondingly provided with the set screws 6. The positioning hole of the sealing ring 1 corresponds to the screw hole of the pressure plate. The sealing ring 1 and the pressure plate 4 are fixedly connected through a set screw 6 penetrating through the positioning hole and the screw hole. The step and the sealing ring 1 are of an integrally formed structure, and the step of the inner diameter of the valve seat is of an integrally formed structure. The locating hole is of an integrally formed structure on the sealing ring, and the sealing ring is made of rubber.

As an example of the manner in which the device may be used,

as shown in fig. 1, the valve seat sealing ring of this embodiment is a racetrack structure, and includes a valve body sealing ring and a positioning hole integrally formed with the valve body sealing ring, wherein the valve body sealing ring is of a flat structure, the positioning holes are respectively formed at the circumference of the valve seat sealing ring and are uniformly distributed, and the two side steps are integrally formed with the valve seat sealing ring, that is, the positioning hole and the two side steps are integrally formed on the valve seat sealing ring. When the valve seat sealing ring is installed, the valve seat sealing ring is installed on the valve plate, and the adjusting pressure plate is installed on the valve seat sealing ring. The adjusting pressure plate is correspondingly provided with a counter bore and a screw hole. The counter bore is provided with an inner hexagonal cylindrical head bolt and an elastic washer, and the screw hole is provided with a set screw. The position of bolt hole and the position of disk seat sealing washer connecting hole unanimous, correspond the setting from top to bottom with disk seat sealing washer and bolt hole and connect and utilize the bolt fastening connection who runs through the locating hole, the flat disk seat sealing washer of centre gripping between valve plate and pressure disk can keep intact leakproofness with the help of its deformation, the locating hole that is run through by the bolt simultaneously especially provides location and spacing effect for the disk seat sealing washer, especially the dislocation of fastening in-process rubber circle when can effectively avoiding installing, set screw has guaranteed the compression height of disk seat rubber circle. Meanwhile, the condition that the rubber ring is splashed out when the internal high pressure is effectively avoided.

Preferably, the first and second electrodes are formed of a metal,

the sealing ring is characterized in that round platform-shaped bosses are formed on two sides of the sealing ring in an outward protruding mode respectively, the round platform-shaped bosses on one side are correspondingly clamped in grooves of the pressure plate, and the round platform-shaped bosses on the other side are clamped in grooves of the valve plate or the valve body, so that the contact area of the sealing ring of the valve seat is increased, and the sealing effect of the bolt hole is improved.

The pressure plate is provided with a plurality of counter bores and screw holes, the counter bores are used for compressing screws, and the screws are used for resisting pressing force from the counter bores. The valve seat ring body positioning hole is formed on the circumference of the valve seat sealing ring. The inner diameter of the valve seat is integrally formed by adding a step for preventing dropping.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims (10)

1. The utility model provides an anticreep disk seat seal structure which characterized in that includes: the valve plate comprises a valve plate and a sealing ring, wherein the sealing ring is of a circumferential structure and is arranged above the valve plate, a pressure plate is arranged on the sealing ring to compress the sealing ring and the valve plate, the edges of the two sides of the sealing ring are respectively provided with a step, and a valve seat is correspondingly arranged below the valve plate.

2. The anti-drop valve seat sealing structure according to claim 1, wherein a plurality of positioning holes are uniformly formed on the circumference of the sealing ring.

3. The anti-drop valve seat sealing structure according to claim 1, wherein the pressure plate is provided with a counter bore and a screw hole.

4. The anti-drop valve seat sealing structure according to claim 3, wherein the counter bore is correspondingly provided with a hexagonal cylindrical head bolt and an elastic washer in sequence.

5. The anti-drop valve seat sealing structure according to claim 3, wherein the screw hole is correspondingly provided with a set screw.

6. The anti-drop valve seat sealing structure according to claim 3, wherein the positioning hole of the sealing ring corresponds to the screw hole of the pressure plate.

7. The anti-drop valve seat sealing structure according to claim 6, wherein the sealing ring and the pressure plate are fastened and connected by a set screw passing through the positioning hole and the screw hole.

8. The anti-drop valve seat sealing structure according to claim 1, wherein the step and the sealing ring are of an integrally formed structure.

9. The anti-drop valve seat sealing structure according to claim 1, wherein the inner diameter of the valve seat is provided with a step and is of an integral structure.

10. The anti-drop valve seat sealing structure according to claim 2, wherein the positioning hole is formed in an integral structure on the sealing ring.

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