Sealing element and valve sealing structure

Abstract

The utility model discloses a sealing element and a valve sealing structure, and belongs to the technical field of valves. The valve sealing ring comprises a framework and a rubber coating layer, the framework is an annular frame, the rubber coating layer is arranged around the framework by a circle, and the rubber coating layer is attached to the framework; the rubber coating layer comprises a protruding part and a base part, and the protruding part protrudes outwards in the two directions perpendicular to the plane of the annular frame on the basis of the base part. The valve sealing ring can be firmly fixed, and the rubber coating layer can be prevented from being damaged due to overlarge stress. According to the valve sealing structure, the valve clack, the main valve body and the auxiliary valve body jointly form the sealing ring groove, the sealing ring is arranged in the sealing ring groove, meanwhile, the joint of the valve clack, the main valve body and the auxiliary valve body is sealed, an additional installation structure is not needed, the valve structure is simplified, and production is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and specifically, to a sealing member and a valve sealing structure. Background Art

[0002] When designing the structure of some valves, in order to facilitate the installation of internal components (such as valve flaps / cartridges), the valve body usually adopts a split structure, that is, the valve body is composed of a main valve body and a sub-valve body connected together. This structure requires at least one additional sealing structure to be designed at the connection part between the main valve body and the sub-valve body, and a sealing structure also needs to be designed between the valve flap / cartridge and the valve body. This leads to a relatively complex sealing structure on the valve, increasing the production process and raising the production cost.

[0003] For the silent check valve in the prior art, in order to facilitate the installation of internal parts such as valve flaps, there are generally two structural forms. The first is to adopt an integral valve body structure, with a detachable bracket arranged inside the valve body for installing the valve shaft and the valve flap; the other is to adopt an integral valve body structure, with a detachable valve seat arranged inside the valve body for installing the valve shaft and the valve flap. In either case, a sealing structure needs to be designed on the valve flap or the valve body or the valve seat, and the sealing structure needs to be fixed separately through a pressing member, resulting in a relatively complex structure of the silent check valve, increasing the production process and raising the production cost.

[0004] For example, CN203836297U discloses an anti-scaling and anti-pollution large-proportion high-absorption and micro-discharge air valve. A sealing ring needs to be installed at the closing position between the valve flap and the valve body. If the sealing ring lacks a fixing structure, it is easy to fall off. Therefore, the sealing structure of this air valve is unreliable, and designing a fixing structure makes the structure more complex. Moreover, a sealing ring also needs to be installed between the valve body and the valve cover of this air valve. Therefore, the sealing structure of this valve is relatively complex, increasing the production process and raising the production cost. Summary of the Utility Model

[0005] 1. Technical Problem to be Solved by the Utility Model

[0006] In view of the problem that the sealing ring is not firmly fixed and easy to fall off after installation in the existing valves, and when the sealing structure is installed in the valve, an additional fixing structure is required, resulting in a relatively complex sealing structure in the valve and being not easy to produce, the utility model provides a sealing member and a valve sealing structure, which can not only firmly install the sealing ring but also do not require an additional fixing structure, simplify the valve structure, and are easier to produce.

[0007] 2. Technical Solution

[0008] To achieve the above object, the technical solution provided by the utility model is as follows:

[0009] The utility model provides a seal, which comprises a skeleton and a rubber coating layer. The skeleton is an annular frame, and the rubber coating layer is arranged around the skeleton for one week and is attached to the skeleton. The rubber coating layer comprises a protruding part and a base part, and the protruding part protrudes outwards in two directions perpendicular to the plane of the annular frame with the base part as the basis.

[0010] As a further improvement of the utility model, the skeleton is divided into a middle part and an edge part. One edge part is connected to each side of the middle part. The base part is coated on the middle part, and the protruding part is coated on the edge part.

[0011] As a further improvement of the utility model, an upper groove and a lower groove are formed between the protruding parts located on both sides of the skeleton, and the upper groove and the lower groove are located on two opposite side surfaces of the skeleton.

[0012] As a further improvement of the utility model, the cross section of the protruding part is circular, and an arc transition surface is arranged between the protruding part and the base part.

[0013] As a further improvement of the utility model, the cross section of the protruding part is square, and a stepped structure is formed between the protruding part and the base part.

[0014] The utility model also provides a valve sealing structure, which comprises the above-mentioned seal, and also comprises a valve flap, a main valve body and a sub-valve body. The main valve body and the sub-valve body are connected together. When the valve is closed, the valve flap contacts the sub-valve body. The valve flap, the main valve body and the sub-valve body jointly enclose a seal ring groove, and the seal is arranged in the seal ring groove to form seals between the main valve body and the sub-valve body and between the valve flap and the sub-valve body.

[0015] As a further improvement of the utility model, the end surface of the valve flap is a valve flap sealing surface, and the end surface of the main valve body is a main valve body sealing surface. The valve flap sealing surface and the main valve body sealing surface jointly form one side wall of the seal ring groove.

[0016] As a further improvement of the utility model, the end surface of the sub-valve body is a sub-valve body sealing surface, and a sub-valve body protrusion is arranged on the sub-valve body sealing surface and protrudes into the seal ring groove; a main valve body protrusion is arranged on the main valve body sealing surface and protrudes into the seal ring groove; the main valve body protrusion and the sub-valve body protrusion are respectively clamped in the upper groove and the lower groove.

[0017] As a further improvement of the utility model, a gap is formed between the valve flap and the main valve body, and the gap is located at the position of the base part of the seal; a sub-valve body avoidance groove is formed on the sub-valve body protrusion, and the sub-valve body avoidance groove is located at the position of the base part of the seal; the gap and the sub-valve body avoidance groove are respectively located on two side surfaces of the seal.

[0018] As a further improvement of the present utility model, the sealing surfaces of the valve flap and the main valve body are respectively closely arranged against a protruding part on the sealing member.

[0019] 3. Beneficial effects

[0020] Adopting the technical solution provided by the present utility model, compared with the existing well-known technologies, it has the following remarkable effects:

[0021] (1) A sealing member provided by the present utility model includes a skeleton and a rubber coating layer. The skeleton is a metal structure, providing sufficient supporting force for the sealing member. The rubber coating layer wraps around the outer periphery of the skeleton. When the sealing member is installed and pressed, the rubber coating layer fills the gaps, thereby achieving sealing. The rubber coating layer extends in two directions perpendicular to the plane, that is, it extends out protruding parts upwards and downwards respectively. The base part is located in the middle of the skeleton, and the protruding parts are located at the two edges of the skeleton. Thus, a structure with a thin middle and thick two edges of the rubber coating layer is realized. When the sealing member is applied, the sealing member is pressed and positioned from both side surfaces of the base part. Since the base part is thin, it is not easy to be damaged due to excessive deformation under pressure. The main pressure-bearing and positioning function is played by the skeleton structure, and the base part mainly only plays the role of connecting the two protruding parts on both sides. In this way, it can not only ensure the structural stability and prevent the sealing member from falling off, but also achieve the sealing effect. In addition, the thickness of the protruding part is larger than that of the base part, and it is positioned in the installation groove and can be deformed under pressure to form a seal, with a good sealing effect.

[0022] (2) A valve sealing structure provided by the present utility model uses the valve flap, the main valve body and the auxiliary valve body to enclose a sealing ring groove, and the sealing ring is arranged in the sealing ring groove. Without setting additional installation structures, the sealing ring can be installed in place.

[0023] (3) A valve sealing structure provided by the present utility model, the sealing surfaces of the valve flap and the main valve body jointly form one side wall of the sealing ring groove, thereby realizing that one sealing member seals both the connection gap between the main valve body and the auxiliary valve body and the gap between the valve flap and the auxiliary valve body. At the same time, the gap between the valve flap and the main valve body is also sealed. Multiple seals can be completed without setting multiple sealing members, simplifying the valve structure.

[0024] (4) A valve sealing structure provided by the present utility model, protrusions are provided on both the main valve body and the auxiliary valve body, which are snapped into the upper and lower grooves of the sealing member, and the sealing member is fixed in two directions to prevent the sealing member from moving.

[0025] (5) A valve sealing structure provided by the present utility model, an avoidance groove is opened on the protrusion of the auxiliary valve body, and a gap is left between the valve flap and the main valve body. When the sealing member is squeezed and the base part deforms, it can deform towards the avoidance groove and the gap, thereby preventing the rubber coating layer from being damaged by pressure. Brief Description of the Drawings

[0026] Figure 1 is a top view of the seal of the present utility model;

[0027] Figure 2 is for Example 1 Figure 1 a cross-sectional view taken along line A-A in;

[0028] Figure 3 is Figure 2 an enlarged view of the structure at B in;

[0029] Figure 4 is for Example 2 Figure 1 a cross-sectional view taken along line A-A in;

[0030] Figure 5 is Figure 4 an enlarged view of the structure at C in;

[0031] Figure 6 is an installation schematic diagram of the seal structure of the present utility model in a valve;

[0032] Figure 7 is Figure 6 an enlarged view of the structure at D in after removing the seal.

[0033] Explanation of the reference numerals in the schematic diagram:

[0034] 1. Seal; 11. Rubber coating layer; 111. Protruding part; 112. Base part; 113. Upper groove; 114. Lower groove; 12. Skeleton; 121. Edge part; 122. Intermediate part; 2. Valve flap; 21. Valve flap main body; 22. Valve flap sealing surface; 3. Main valve body; 31. Main valve body main body; 32. Main valve body sealing surface; 33. Main valve body protrusion; 4. Sub-valve body; 41. Sub-valve body main body; 42. Sub-valve body sealing surface; 43. Sub-valve body protrusion; 44. Sub-valve body avoidance groove; 5. Gap; 6. Sealing ring groove. Detailed Description of the Preferred Embodiments

[0035] In order to make the above objects, features and advantages of the utility model more obvious and understandable, the following detailed description of the specific embodiments of the utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to provide a thorough understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood 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 the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in 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 merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0041] Embodiment 1

[0042] Combined with Figure 1 and Figure 2 , a seal of this embodiment includes a skeleton 12 and a rubber coating layer 11. The skeleton 12 is an annular frame, and the rubber coating layer 11 is arranged around the skeleton 12 for one week, and the rubber coating layer 11 is attached to the skeleton 12, that is, the rubber coating layer 11 is wrapped around the outer periphery of the skeleton 12. The skeleton 12 is a metal structure, providing sufficient supporting force for the seal 1. The outer periphery of the skeleton 12 is wrapped with the rubber coating layer 11. When the seal 1 is installed and pressed, the rubber coating layer 11 fills the gap, thereby achieving sealing. In order to adapt to the structures of different valves, the skeleton 12 can be of various shapes, such as closed structures like circular rings and square rings. In view of the fact that the valve opening where the seal 1 of this embodiment is installed is circular, the skeleton 12 in this embodiment is a circular ring, that is, the seal 1 is a circular ring. Among them, the skeleton 12 is made of metal, and the selectable materials include but are not limited to materials such as stainless steel, carbon steel, copper, and aluminum. In this embodiment, the cross-section of the skeleton 12 is a square structure. When it is placed in the Figure 2 way, the lengths of its upper and lower sides are longer than those of its left and right sides.

[0043] Combined with Figure 3 , in this embodiment, the rubber coating layer 11 for sealing includes a protruding portion 111 and a base portion 112. The protruding portion 111 protrudes outward in two directions perpendicular to the plane of the annular frame based on the base portion 112, that is, it protrudes upward and downward respectively in the Figure 3 . In this implementation, in the Figure 3 , the skeleton 12 is divided into an intermediate portion 122 and an edge portion 121 by a dotted line. An edge portion 121 is connected to each side of the intermediate portion 122. Among them, the base portion 112 of the rubber coating layer 11 is wrapped on the intermediate portion 122, and the protruding portion 111 is wrapped on the edge portion 121, that is, a protruding portion 111 is arranged on each side of the base portion 112 of the rubber coating layer 11. In this embodiment, the lengths of the base portion 112 and the protruding portion 111 are basically equal. According to the structures of different valves, it can also be set to a structure where the protruding portion 111 is longer and the base portion 112 is shorter or the protruding portion 111 is shorter and the base portion 112 is longer.

[0044] In this embodiment, an upper groove 113 and a lower groove 114 are formed between the protruding parts 111 located at two edges of the skeleton 12. The upper groove 113 and the lower groove 114 are located on two opposite side surfaces of the skeleton 12. Among them, the cross-section of the protruding part 111 is circular, and an arc transition surface is provided between the protruding part 111 and the base part 112. For the seal 1 of this embodiment, the rubber coating layer 11 extends in two directions perpendicular to the plane from the base part 112, that is, the protruding parts 111 extend upward and downward respectively. The base part 112 is located in the middle of the skeleton 12, and the protruding parts 111 are located at two edges of the skeleton 12. Thus, a structure with a thin middle and thick edges of the rubber coating layer 11 is realized. When the protruding part 111 is squeezed, the protruding part 111 can deform towards the base part 112, thereby preventing the rubber coating layer 11 from being crushed. When the seal 1 is applied, the seal 1 is pressed and positioned from both side surfaces of the base part 112. Since the base part 112 is thin and not easily deformed under pressure and damaged, the structure of the skeleton 12 mainly plays the role of bearing and positioning. The base part 112 mainly only plays the role of connecting the two protruding parts 111 on both sides. In this way, both the structural stability can be ensured so that the seal 1 is not easily detached, and the sealing effect can be achieved. In addition, the thickness of the protruding part 111 is larger than that of the base part 112, and it is positioned in the installation groove and can be deformed under pressure to form a seal, with a good sealing effect. The protruding part 111 extends in two directions, up and down, thus forming two grooves. When the seal 1 is arranged in the valve, the seal 1 can be clamped from two directions, so that it does not displace, thereby better sealing the valve.

[0045] Combined with Figure 6 and Figure 7 In this embodiment, a valve sealing structure is further provided, which includes a seal 1, a valve flap 2, a main valve body 3 and a sub-valve body 4. The main valve body 3 and the sub-valve body 4 are detachably connected together by a threaded part. The valve flap 2 contacts the sub-valve body 4. The valve flap 2, the main valve body 3 and the sub-valve body 4 jointly enclose a sealing ring groove 6, and the seal 1 is arranged in the sealing ring groove 6. In this embodiment, the valve flap 2 includes a valve flap main body 21, and the end of the valve flap main body 21 is a valve flap sealing surface 22. The main valve body 3 includes a main valve body main body 31, and the end of the main valve body main body 31 is a main valve body sealing surface 32. The valve flap sealing surface 22 and the main valve body sealing surface 32 jointly form one side wall of the sealing ring groove 6. In this embodiment, it is the upper side wall. The valve flap sealing surface 22 and the main valve body sealing surface 32 are respectively closely arranged with one protruding part 111 on the seal 1. In this embodiment, the valve flap sealing surface 22 and the main valve body sealing surface 32 jointly form one side wall of the sealing ring groove 6, thereby realizing that one seal 1 seals both the connection gap between the main valve body 3 and the sub-valve body 4 and the gap between the valve flap 2 and the sub-valve body 4. At the same time, the gap between the valve flap 2 and the main valve body 3 is also sealed. Multiple seals do not need to be arranged to complete multiple seals, simplifying the valve structure.

[0046] In this embodiment, the auxiliary valve body 4 includes an auxiliary valve body main body 41, and the end face of the auxiliary valve body main body 41 is the auxiliary valve body sealing surface 42. In this embodiment, a groove is formed on the auxiliary valve body sealing surface 42 to form the other three side walls of the sealing ring groove 6. When the seal 1 is installed in the groove, the top extends outside the groove, and the upper side wall formed by the valve flap sealing surface 22 and the main valve body sealing surface 32 presses the seal 1 into the groove, and the seal 1 undergoes a slight deformation to achieve sealing. In this embodiment, an auxiliary valve body protrusion 43 protrudes into the sealing ring groove 6 on the auxiliary valve body sealing surface 42; a main valve body protrusion 33 protrudes into the sealing ring groove 6 on the main valve body sealing surface 32; the main valve body protrusion 33 and the auxiliary valve body protrusion 43 are respectively clamped in the upper groove 113 and the lower groove 114. In this embodiment, protrusions are provided on both the main valve body 3 and the auxiliary valve body 4, which are clamped into the upper and lower grooves of the seal 1 to fix the seal 1 in two directions and prevent the seal 1 from moving.

[0047] In this embodiment, a gap 5 is formed between the valve flap 2 and the main valve body 3, and the gap 5 is located at the position of the base portion 112 of the seal 1; an auxiliary valve body avoidance groove 44 is formed on the auxiliary valve body protrusion 43, and the auxiliary valve body avoidance groove 44 is located at the position of the base portion 112 of the seal 1; the gap 5 and the auxiliary valve body avoidance groove 44 are respectively located on both side surfaces of the seal 1. An avoidance groove is formed on the protrusion of the auxiliary valve body 4, and a gap 5 is left between the valve flap 2 and the main valve body 3. When the seal 1 is squeezed and the base portion 112 deforms, it can deform towards the avoidance groove and the gap 5, thereby preventing the rubber coating layer 11 from being damaged.

[0048] Embodiment 2

[0049] Combined with Figure 4 and Figure 5 , the structure of the seal 1 in this embodiment is basically the same as that of the embodiment, the difference being that the cross-section of the protrusion 111 is square, and the protrusion 111 and the base portion 112 form a stepped structure.

[0050] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the spirit of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A seal, characterized in that, It includes a framework (12) and a rubber coating layer (11). The framework (12) is an annular frame, and the rubber coating layer (11) is arranged around the framework (12) for one week and is in contact with the framework (12). The rubber coating layer (11) includes a protruding part (111) and a base part (112). The protruding part (111) protrudes outward in two directions perpendicular to the plane of the annular frame based on the base part (112).

2. The seal according to claim 1, wherein, The framework (12) is divided into an intermediate part (122) and an edge part (121). One edge part (121) is connected to each side of the intermediate part (122). The base part (112) is coated on the intermediate part (122), and the protruding part (111) is coated on the edge part (121).

3. The seal according to claim 2, wherein, An upper groove (113) and a lower groove (114) are formed between the protruding parts (111) on both sides of the framework (12). The upper groove (113) and the lower groove (114) are located on two opposite side surfaces of the framework (12).

4. A seal according to claim 1, characterized in that, The cross-section of the protruding part (111) is circular, and an arc transition surface is arranged between the protruding part (111) and the base part (112).

5. A seal according to claim 1, characterized in that, The cross-section of the protruding part (111) is square, and a stepped structure is formed between the protruding part (111) and the base part (112).

6. A valve sealing structure, characterized in that, It includes a seal (1) according to any one of claims 1-5, and also includes a valve flap (2), a main valve body (3) and a sub-valve body (4). The main valve body (3) and the sub-valve body (4) are connected together. When the valve is closed, the valve flap (2) contacts the sub-valve body (4). The valve flap (2), the main valve body (3) and the sub-valve body (4) jointly enclose a seal ring groove (6). The seal (1) is arranged in the seal ring groove (6) to form a seal between the main valve body (3) and the sub-valve body (4) and a seal between the valve flap (2) and the sub-valve body (4).

7. A valve sealing structure according to claim 6, characterized in that, The end face of the valve flap (2) is a valve flap sealing surface (22), and the end face of the main valve body (3) is a main valve body sealing surface (32). The valve flap sealing surface (22) and the main valve body sealing surface (32) jointly form one side wall of the seal ring groove (6).

8. A valve sealing structure according to claim 7, characterized in that, The end face of the sub-valve body (4) is a sub-valve body sealing surface (42). A sub-valve body protrusion (43) protrudes into the seal ring groove (6) on the sub-valve body sealing surface (42). A main valve body protrusion (33) protrudes into the seal ring groove (6) on the main valve body sealing surface (32). The main valve body protrusion (33) and the sub-valve body protrusion (43) are respectively clamped in the upper groove (113) and the lower groove (114).

9. A valve sealing structure according to claim 8, characterized in that, A gap (5) is formed between the valve flap (2) and the main valve body (3). The gap (5) is located at the position of the base part (112) of the seal (1). A sub-valve body avoidance groove (44) is opened on the sub-valve body protrusion (43). The sub-valve body avoidance groove (44) is located at the position of the base part (112) of the seal (1). The gap (5) and the sub-valve body avoidance groove (44) are respectively located on two side surfaces of the seal (1).

10. A valve sealing structure according to claim 9, characterized in that, The valve flap sealing surface (22) and the main valve body sealing surface (32) are respectively arranged in close contact with a protruding portion (111) on the sealing member (1).

Images