Safety valve with sealing surface made of vulcanized rubber

Abstract

The utility model relates to a safety valve with a sealing surface made of vulcanized rubber. The valve clack assembly is arranged in the valve body assembly; the valve seat assembly is arranged in the valve body assembly and connected with the valve clack assembly in a matched mode. The elastic assembly is arranged between the valve body assembly and the valve clack assembly, and the valve clack assembly abuts against the valve seat assembly under the elastic force effect of the elastic assembly; wherein a rubber sealing ring is arranged between the valve clack assembly and the valve seat assembly, the rubber sealing ring is fixed to the valve clack assembly in a vulcanization mode, through the arrangement, the sealing structure is simplified, parts are reduced, the requirement for machining is lowered, due to the fact that the valve clack assembly and the valve clack are tightly attached together through the vulcanization technology, no gap exists, and the sealing performance of the valve clack assembly is improved. The stability and the safety are better, and the problem of difficult assembly is avoided.

Description

Technical Field

[0001] This application relates to the technical field of safety valves, and particularly to a safety valve with a sealing surface made of vulcanized rubber. Background Art

[0002] Spring-loaded safety valves are automatic valves mainly used to protect pressure vessels, pipelines and other equipment from exceeding the specified pressure value during operation. They are widely used in industries such as petroleum, chemical, electric power, metallurgy, pharmaceuticals, as well as various industrial equipment and civil facilities, such as boilers, pressure vessels, pressure pipelines, compressors, pumps, etc. It is one of the important equipment to ensure the safety of equipment and personnel.

[0003] Spring-loaded safety valves mainly rely on the force of the spring to control the opening and closing of the valve. When the pressure in the equipment rises to the set value, the force acting on the valve disc overcomes the spring force, causing the valve disc to open and discharge the excess medium, thereby reducing the pressure in the equipment. When the pressure drops below the set value, the spring force pushes the valve disc back to its original position, closing the valve and preventing the medium from continuing to be discharged.

[0004] Spring-loaded safety valves have a relatively simple structure, consisting of several main components, which are easy to manufacture, install and maintain. And because their working principle is based on the spring force and is not affected by external power sources, gas sources and other factors, they have high reliability. Spring-loaded safety valves can quickly open when the pressure in the equipment reaches the set value, discharge the excess medium, and effectively protect the safety of the equipment.

[0005] In the prior art, the valve disc and the valve seat of the spring-loaded safety valve are sealed by a separate O-ring. The O-ring is assembled between the valve disc and the pressing plate, and then the screw is tightened to fix it, so that the valve disc, the pressing plate and the O-ring form a whole, that is, the valve disc assembly. Under the action of the spring force, the valve disc assembly presses tightly on the valve seat. At this time, the O-ring is in angular contact with the valve seat to form a seal. However, the compression amount of this structure's O-ring is relatively small, only about 0.2 mm. The valve body and the valve seat, the valve body and the guide sleeve, the guide sleeve and the counterblow disc, and the counterblow disc and the valve disc are in clearance fit, and the limit clearance is even greater than 0.2 mm. When the valve disc assembly is closed, the compression amount around the O-ring is often uneven, resulting in sealing leakage. And it requires extremely high coaxiality, with a relatively high manufacturing cost. The rubber O-ring also changes with temperature, and its size will change. It becomes larger in summer and is more difficult to assemble.

[0006] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0007] Based on this, it is necessary to provide a safety valve with a sealing surface made of vulcanized rubber.

[0008] To solve the above technical problems, the present application provides the following technical solutions:

[0009] A safety valve with a vulcanized rubber sealing surface, comprising:

[0010] A valve body assembly;

[0011] A valve flap assembly disposed within the valve body assembly;

[0012] A valve seat assembly disposed within the valve body assembly and matingly connected to the valve flap assembly; and

[0013] An elastic assembly disposed between the valve body assembly and the valve flap assembly, the valve flap assembly being abutted against the valve seat assembly under the elastic force of the elastic assembly;

[0014] Wherein, a rubber sealing ring is disposed between the valve flap assembly and the valve seat assembly, and the rubber sealing ring is vulcanized and fixed on the valve flap assembly.

[0015] Further, a mounting groove is formed by inward depression on one side of the valve flap assembly facing the valve seat assembly, and the rubber sealing ring is vulcanized and fixed in the mounting groove.

[0016] Further, one end of the rubber sealing ring facing the valve seat assembly is hemispherical, and the hemispherical end protrudes out of the mounting groove and abuts against the valve seat assembly.

[0017] Further, a first step is formed by convex extension at the edge of one end of the valve seat assembly facing the valve flap assembly. When the rubber sealing ring abuts against the valve seat assembly, the first step abuts against the valve flap assembly.

[0018] Further, the elastic assembly is a spring member.

[0019] Further, the valve body assembly includes a first valve body and a second valve body connected to the first valve body. An axial hole is provided at the top of the first valve body, and the second valve body surrounds the axial hole.

[0020] Further, the safety valve further includes a shaft rod. One end of the shaft rod passes through the axial hole and extends into the second valve body, and the other end is connected to the valve flap assembly. The elastic assembly is sleeved on the shaft rod.

[0021] Further, the safety valve further includes a guide sleeve disposed within the first valve body and a backwash disc disposed within the guide sleeve. One end of the backwash disc is connected to the valve flap assembly, and the other end is connected to the shaft rod.

[0022] Further, one end of the guide sleeve away from the valve flap assembly has a clamping portion, and the clamping portion is adapted to limit the backwash disc from rushing out of the guide sleeve.

[0023] Further, a restricting member is sleeved on the shaft rod. One side of the shaft rod away from the second valve body abuts against the restricting member, and the elastic component is sleeved and abuts between the restricting member and the shaft hole.

[0024] Compared with the prior art, the safety valve with a sealing surface made of vulcanized rubber in this application is provided with a valve body assembly, a valve flap assembly arranged in the valve body assembly, a valve seat assembly arranged in the valve body assembly and cooperating with the valve flap assembly, and an elastic component arranged between the valve body assembly and the valve flap assembly. Among them, the valve flap assembly abuts against the valve seat assembly under the elastic force of the elastic component. A rubber sealing ring is arranged between the valve flap assembly and the valve seat assembly, and the rubber sealing ring is vulcanized and fixed on the valve flap assembly, thereby simplifying the sealing structure, reducing parts, and reducing the requirements for processing. Since it is tightly attached to the valve flap using the vulcanization process without gaps, it has better stability and safety, and there will be no problem of difficult assembly.

[0025] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following takes the preferred embodiments of the present invention and describes them in detail in conjunction with the drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the safety valve with a sealing surface made of vulcanized rubber provided by the present application;

[0028] Figure 2 For Figure 1 partial structural schematic diagram of. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0030] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for illustrative purposes and do not represent the only implementation.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0034] Please refer to Figures 1 to 2, this application provides a safety valve with a sealing surface made of vulcanized rubber, including a valve body assembly 1, a valve flap assembly 2 arranged in the valve body assembly 1, a valve seat assembly arranged in the valve body assembly 1 and cooperating with the valve flap assembly 2, and an elastic component 4 arranged between the valve body assembly 1 and the valve flap assembly 2. Among them, the valve flap assembly 2 is abutted against the valve seat assembly under the elastic force of the elastic component 4. A rubber sealing ring 5 is arranged between the valve flap assembly 2 and the valve seat assembly. When the pressure in the equipment connected to the safety valve rises to the set value, the force acting on the valve flap overcomes the elastic force of the elastic component 4, causing the valve flap assembly 2 to open and discharge the excess medium, thereby reducing the pressure in the equipment. When the pressure drops below the set value, the elastic force of the elastic component 4 pushes the valve flap assembly 2 back to its original position, closing the safety valve and preventing the medium from continuing to be discharged. The more detailed principle belongs to the prior art and will not be elaborated here.

[0035] In this embodiment, the rubber sealing ring 5 is vulcanized and fixed on the valve flap assembly 2, thus simplifying the sealing structure, reducing parts, and lowering the requirements for processing. Since it is tightly attached to the valve flap using the vulcanization process, there is no gap, resulting in better stability and safety, and there will also be no problem of difficult assembly. In this embodiment, the elastic component 4 is a spring component.

[0036] Specifically, a mounting groove 21 is formed by inward depression on one side of the valve flap assembly 2 facing the valve seat assembly. The rubber sealing ring 5 is vulcanized and fixed in the mounting groove 21. In this embodiment, the vulcanization process uses a conventional vulcanization process, which will not be elaborated here. Among them, one end of the rubber sealing ring 5 facing the valve seat assembly is hemispherical, which can be achieved through a mold during the vulcanization process. The hemispherical end protrudes out of the mounting groove 21 and abuts against the valve seat assembly, thereby improving the sealing effect.

[0037] One end edge of the valve seat assembly facing the valve flap assembly 2 protrudes to form a first step 31. When the rubber sealing ring 5 abuts against the valve seat assembly, the first step 31 abuts against the valve flap assembly 2, thereby playing a role in limiting and supporting the valve flap assembly 2 and preventing the semi-circular sealing surface of the rubber sealing ring 5 from being compressed too much and causing failure.

[0038] As described above, the valve body assembly 1 includes a first valve body 11 and a second valve body 12 connected to the first valve body 11. A shaft hole 111 is opened at the top of the first valve body 11, and the second valve body 12 is arranged around the shaft hole 111. The safety valve further includes a shaft rod 6. One end of the shaft rod 6 passes through the shaft hole 111 and extends into the second valve body 12, and the other end is connected to the valve flap assembly 2. The elastic component 4 is sleeved on the shaft rod 6.

[0039] The safety valve further includes a guide sleeve 7 disposed in the first valve body 11 and a recoil disc 8 disposed in the guide sleeve 7. One end of the recoil disc 8 is connected to the valve flap assembly 2, and the other end is connected by a shaft rod 6. The end of the guide sleeve 7 away from the valve flap assembly 2 has a clamping portion 71, and the clamping portion 71 is adapted to limit the recoil disc 8 from rushing out of the guide sleeve 7, so as to ensure that even when the safety valve is in use, the valve flap assembly 2 will not be rushed out of the guide sleeve 7 by the high-pressure medium, thus ensuring the use effect.

[0040] It should be noted that a restricting member 9 is also sleeved on the shaft rod 6. The side of the shaft rod 6 away from the second valve body 12 abuts against the restricting member 9, and the elastic assembly 4 is sleeved and abuts between the restricting member 9 and the shaft hole 111 to ensure that the recoil disc 8 can be abutted on the valve flap assembly 2 by the shaft rod 6.

[0041] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0042] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A safety valve with a sealing surface made of vulcanized rubber, characterized in that, Comprising: A valve body assembly; A valve flap assembly, disposed within the valve body assembly; A valve seat assembly, disposed within the valve body assembly and matingly connected to the valve flap assembly; And An elastic assembly, disposed between the valve body assembly and the valve flap assembly, the valve flap assembly being abutted against the valve seat assembly under the elastic force of the elastic assembly; Wherein, a rubber sealing ring is provided between the valve flap assembly and the valve seat assembly, and the rubber sealing ring is vulcanized and fixed on the valve flap assembly.

2. The safety valve with a sealing surface made of vulcanized rubber according to claim 1, characterized in that, An installation groove is formed by inward depression on one side of the valve flap assembly facing the valve seat assembly, and the rubber sealing ring is vulcanized and fixed within the installation groove.

3. The safety valve with a sealing surface made of vulcanized rubber according to claim 2, characterized in that, One end of the rubber sealing ring facing the valve seat assembly is hemispherical, and the hemispherical end protrudes out of the installation groove and abuts against the valve seat assembly.

4. The safety valve with a sealing surface made of vulcanized rubber according to claim 3, characterized in that, One end edge of the valve seat assembly facing the valve flap assembly protrudes to form a first step, and when the rubber sealing ring abuts against the valve seat assembly, the first step abuts against the valve flap assembly.

5. The safety valve with a sealing surface made of vulcanized rubber according to claim 4, characterized in that, The elastic assembly is a spring member.

6. The safety valve with a sealing surface made of vulcanized rubber according to claim 5, characterized in that, The valve body includes a first valve body and a second valve body connected to the first valve body. An axial hole is provided at the top of the first valve body, and the second valve body surrounds the axial hole.

7. The safety valve with a sealing surface made of vulcanized rubber according to claim 6, characterized in that, The safety valve further includes a shaft rod, one end of the shaft rod passes through the axial hole and extends into the second valve body, and the other end is connected to the valve flap assembly. The elastic assembly is sleeved on the shaft rod.

8. The safety valve with a sealing surface made of vulcanized rubber according to claim 7, characterized in that, The safety valve further includes a guide sleeve disposed within the first valve body and a backflush disc disposed within the guide sleeve. One end of the backflush disc is connected to the valve flap assembly, and the other end is connected to the shaft rod.

9. The safety valve with a sealing surface made of vulcanized rubber according to claim 8, characterized in that, One end of the guide sleeve away from the valve flap assembly has a clamping portion, and the clamping portion is adapted to restrict the backflush disc from rushing out of the guide sleeve.

10. The safety valve with a sealing surface made of vulcanized rubber according to claim 9, characterized in that, A restricting member is sleeved on the shaft rod, and one side of the shaft rod away from the second valve body abuts against the restricting member. The elastic assembly is sleeved and abutted between the restricting member and the axial hole.

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