Sealing gasket and multi-way valve

Abstract

The utility model provides a sealing gasket and a multi-way valve, and belongs to the technical field of valves. Comprising an upper edge, a lower edge and two side edges located between the upper edge and the lower edge, the upper edge is located on the upper surface of the sealing gasket, the lower edge is located on the lower surface of the sealing gasket, and the two side edges are located on the two opposite sides of the base section respectively. The middle portions of the two side edges are respectively provided with a protruding portion protruding outwards, and the side edges gradually transit outwards from the end portions of the side edges to the middle portions of the side edges. According to the utility model, the protruding part can enhance the strength of the base section at the middle part of the foundation section and prevent the base section from being bent at the middle part, and meanwhile, as the side edge gradually transits outwards from the end part of the side edge to the middle part of the side edge, namely, the side edge continuously deflects outwards from the end part of the side edge to the middle part of the side edge, a stress concentration point is prevented from being formed, and the service life of the base section is prolonged. And the risk that the base section is bent at a stress concentration point when being pressed is reduced, so that the sealing gasket can be well sealed.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a sealing pad and a multi-way valve. Background Art

[0002] Sealing gaskets are usually installed on valves to seal between internal components of the valve or between the valve and the workpiece to be installed. The cross-section of existing sealing gaskets is subject to the compression requirements and product size restrictions, and its height-to-width ratio is usually greater than 1, which causes the sealing gasket to bend and fall partially after being compressed, resulting in reduced sealing effect or even failure. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a sealing gasket and a multi-way valve, which are used to solve the problem that the sealing gasket in the prior art is prone to partial bending and tipping after being pressurized.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a sealing gasket and a multi-way valve, comprising a base section, wherein a cross section of the base section perpendicular to the extension direction of the base section is a basic cross section, wherein the basic cross section has an upper edge, a lower edge and two side edges located between the upper edge and the lower edge, wherein the upper edge is located on the upper surface of the sealing gasket, and the lower edge is located on the lower surface of the sealing gasket.

[0005] The two side edges are respectively located on two opposite sides of the basic cross section, and the middle parts of the two side edges respectively have protrusions protruding outwards, and the side edges gradually transition outwards from the ends of the side edges to the middle parts of the side edges.

[0006] Optionally, the base segment includes an outer ring base segment, the sealing gasket includes a middle portion and an outer ring, the outer ring is formed by the outer ring base segment surrounding the outer periphery of the middle portion, and the rotation axis of the outer ring is arranged along the thickness direction of the sealing gasket.

[0007] Optionally, the middle part includes an inner ring, the base segment includes an inner ring base segment, the inner ring is sleeved in the outer ring, the inner ring is formed by rotating and extending the inner ring base segment and connecting end to end, and the rotation axis of the inner ring is arranged along the thickness direction of the sealing gasket.

[0008] Optionally, the middle portion includes spokes, the base segment includes a spoke base segment, the spokes are located between the inner ring and the outer ring, and extend from the inner ring to the outer ring from the spoke base segment, and both ends of the spokes are respectively connected to the outer ring and the inner ring.

[0009] Optionally, there are a plurality of spokes, and the plurality of spokes are sequentially arranged around the inner ring, and the spokes separate the outer ring and the inner ring into a plurality of mutually separated separation areas.

[0010] Optionally, the upper edge extends along the extension direction of the base segment to become the upper top surface of the base segment, and the lower edge extends along the extension direction of the base segment to become the lower bottom surface of the base segment, the upper top surface is located on the upper surface of the sealing gasket, and the lower bottom surface is located on the lower surface of the sealing gasket, and a sealing lip is provided on the upper top surface and / or the lower bottom surface, and the sealing lip is extended along the extension direction of the base segment.

[0011] Optionally, the sealing lip includes two lip units respectively extending along the extension direction of the base segment, and the two lip units are arranged side by side.

[0012] Optionally, a triangular depression is provided on the upper surface of the sealing gasket and / or the lower surface of the sealing gasket;

[0013] The recess is arranged at the connection between the spoke and the outer ring, the two corners of the triangle are arranged in the extension direction of the outer ring, and the other corner of the triangle is arranged in the extension direction of the spoke, or the recess is arranged at the connection between the spoke and the inner ring, the two corners of the triangle are arranged in the extension direction of the inner ring, and the other corner of the triangle is arranged in the extension direction of the spoke.

[0014] Optionally, a dimension of the basic cross section in a thickness direction of the sealing gasket is H, and a dimension of the basic cross section in a direction perpendicular to the thickness direction of the sealing gasket is W, and H>W.

[0015] Optionally, a dimension of the protrusion in the thickness direction of the sealing gasket is h, a dimension of the basic cross section in the thickness direction of the sealing gasket is H, and h>0.1H.

[0016] The utility model also provides a multi-way valve comprising a valve body, on which a sealing gasket as described in any one of the above items is arranged.

[0017] As described above, a sealing gasket and a multi-way valve provided by the utility model have the following beneficial effects: since the sealing gasket includes a base section, the middle parts of the two side edges of the base section's basic cross-section respectively have protrusions protruding outward, and the protrusions can enhance the strength of the base section at the middle part of the basic cross-section, thereby avoiding bending of the base section in the middle part; at the same time, since the side edge gradually transitions outward from the end portion of the side edge to the middle portion of the side edge, that is, from the end portion of the side edge to the middle portion of the side edge, the side edge is continuously deflected outward, thereby avoiding the formation of a stress concentration point, and reducing the risk of the base section bending at the stress concentration point when under pressure, thereby enabling the sealing gasket to seal well. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the sealing gasket in the embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the top view of the sealing gasket in the embodiment of the utility model.

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the MM direction.

[0021] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Figure 5 for Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0023] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure along the NN direction.

[0024] Figure 7 for Figure 3 Schematic diagram of the local enlarged structure at point C in the middle.

[0025] Figure 8 It is a schematic diagram of the dimensions of the basic cross section in the embodiment of the utility model.

[0026] Description of the reference numerals: outer ring 1 , inner ring 2 , spoke 3 , lip unit 4 , transition section 5 , protrusion 6 , upper surface 7 , lower surface 8 , interference protrusion 9 , recess 10 . DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0028] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0029] See also Figures 1 to 8The present embodiment provides a sealing gasket, including a base section, the base section of the base section is perpendicular to the extension direction of the base section, the base section has an upper side, a lower side and two side sides located between the upper side and the lower side, the upper side of the base section is located on the upper surface 7 of the sealing gasket, the lower side of the base section is located on the lower surface 8 of the sealing gasket, and the two side sides are located on opposite sides of the base section. The middle of the two side sides respectively have protrusions 6 protruding outward, and from the end of the side to the middle of the side, the side gradually transitions outward from the end to the protrusion 6. The protrusion 6 can enhance the strength of the base section at the middle of the base section to avoid bending of the base section in the middle. At the same time, from the end of the side to the middle of the side, the side is continuously deflected outward to avoid the formation of a stress concentration point, reducing the risk of bending of the base section at the stress concentration point when under pressure, so that the sealing gasket can be well sealed.

[0030] Specifically, Figure 1 , Figure 2 As shown, the base section includes an outer ring base section, and the sealing gasket includes a middle part and an outer ring 1. The outer ring 1 is formed by the outer ring base section surrounding the outer circumference of the middle part, and the rotation axis of the outer ring 1 is arranged along the thickness direction of the sealing gasket. The outer ring 1 constrains the overall shape of the sealing gasket and realizes the separation and sealing of the inner and outer parts of the outer ring 1.

[0031] In this embodiment, the middle portion includes an inner ring 2, the base section includes an inner ring base section, the inner ring 2 is sleeved in the outer ring 1, the inner ring 2 is formed by rotating and extending the inner ring base section and connecting end to end, and the rotation axis of the inner ring 2 is arranged along the thickness direction of the sealing gasket. The inner ring 2 can achieve separation and sealing of the inner and outer parts of the inner ring 2.

[0032] In this embodiment, the middle portion further includes spokes 3, the base section includes spoke base sections, the spokes 3 are located between the inner ring 2 and the outer ring 1, and extend from the inner ring 2 to the outer ring 1 by the spoke base sections, and the two ends of the spokes 3 are respectively connected to the outer ring 1 and the inner ring 2. The spokes 3 can connect the inner ring 2 and the outer ring 1, constrain the relative position between the inner ring 2 and the outer ring 1, and at the same time play a role in separating the area between the inner ring 2 and the outer ring 1.

[0033] Specifically, in this embodiment, there are multiple spokes 3, and the multiple spokes 3 are arranged in sequence around the inner ring 2. The spokes 3 divide the outer ring 1 and the inner ring 2 into multiple separated areas, that is, each separation area is closed and separated from each other.

[0034] In this embodiment, interference protrusions 9 are provided on both sides of the inner ring 2, the outer ring 1, and the spokes 3. When the sealing gasket is installed and the inner ring 2, the outer ring 1, and the spokes 3 are clamped in the slots, the interference protrusions 9 can be interference fit with the slots, so that the sealing gasket can be well clamped in the slots.

[0035] like Figure 4 , Figure 5 and Figure 7 As shown, Figure 4The middle section is the basic section of the outer ring base segment. Figure 5 The middle section is the basic section of the inner ring base segment. Figure 7 The middle section is the basic section of the spoke base. The specific dimensions of the basic sections of the inner ring base, the outer ring base, and the spoke base can be different to accommodate the different functions of each part of the gasket and meet different performance requirements. Figure 4 , Figure 5 and Figure 7 As shown, in the basic cross section of the outer ring base section, the basic cross section of the spoke base section and the basic cross section of the inner ring base section, there is a straight transition section 5 between the side end of the basic cross section and the protrusion 6, there is an angle between the extension direction of the transition section 5 and the thickness direction, and the angle is an acute angle, and the side end gradually transitions outward to the protrusion 6 through the transition section 5. The straight transition section 5 has the advantages of simple structure and easy processing and manufacturing.

[0036] like Figure 3 to Figure 7 As shown, in this embodiment, the upper edge extends along the extension direction of the base section to become the upper top surface of the base section, and the lower edge extends along the extension direction of the base section to become the lower bottom surface of the base section. The upper top surface is located on the upper surface 7 of the sealing gasket, and the lower bottom surface is located on the lower surface 8 of the sealing gasket. A sealing lip is provided on the upper top surface and / or the lower bottom surface, and the sealing lip is extended along the extension direction of the base section. The sealing lip is easy to deform, which can increase the degree of fit between the upper top surface of the base section and the lower bottom surface of the base section and the mating parts, respectively, and enhance the sealing effect of the sealing gasket.

[0037] In some embodiments, a triangular recess 10 is provided on the upper surface 7 or the lower surface 8 of the sealing gasket. The recess 10 can be provided at the connection between the spoke 3 and the outer ring 1, with two corners of the triangle provided in the extension direction of the outer ring 1 and the other corner of the triangle provided in the extension direction of the spoke 3. The recess 10 can also be provided at the connection between the spoke 3 and the inner ring 2, with two corners of the triangle provided in the extension direction of the inner ring 2 and the other corner of the triangle provided in the extension direction of the spoke 3. Figure 1 and Figure 2 As shown, in this embodiment, triangular depressions 10 are provided on the upper surface 7 and the lower surface 8 of the sealing gasket at the connection between the spoke 3 and the outer ring 1, and at the connection between the spoke 3 and the inner ring 2. The connection between the spoke 3 and the outer ring 1 and the connection between the spoke 3 and the inner ring 2 are of high strength, and the deformation is reduced under the condition of constant pressure, which is not conducive to the sealing fit between the sealing gasket and the workpiece to be sealed. In this embodiment, the depression 10 can reduce the strength of the sealing gasket at the position of the depression 10, so that the sealing gasket is easy to deform at the location of the depression 10, which is conducive to maintaining a good fit between the sealing gasket and the workpiece to be sealed, and ensuring the sealing performance of the sealing gasket.

[0038] Specifically, in this embodiment, the sealing lip includes two lip units 4 extending along the extension direction of the base section, and the two lip units 4 are arranged side by side. The increase in the number of lip units 4 is conducive to enhancing the sealing effect of the sealing gasket.

[0039] In this embodiment, Figure 8 As shown, the size of the basic section in the direction of the gasket thickness is H, and the size of the basic section in the direction perpendicular to the gasket thickness is W, H>W, that is, the size of the basic section in the direction of the gasket thickness is greater than the size of the basic section in the direction perpendicular to the gasket thickness. The size of the basic section in the direction of the gasket thickness is the height of the basic section, and the size of the basic section in the direction perpendicular to the gasket thickness is the width of the basic section. H>W means that the height-to-width ratio of the basic section is greater than 1. When the height-to-width ratio of the basic section is larger, the width of the basic section is smaller when the height of the basic section remains unchanged, which is conducive to reducing the size of the base section along the extension direction of the gasket and reducing the space occupied by the gasket.

[0040] In this embodiment, the dimension of the protrusion 6 in the thickness direction of the gasket is h, and the dimension of the base section in the thickness direction of the gasket is H, and h>0.1H. h>0.1H, that is, the height dimension of the protrusion 6 is greater than one tenth of the dimension of the base section in the thickness direction of the gasket, which can effectively ensure the strength of the middle part of the base section and avoid bending of the base section.

[0041] The utility model also provides a multi-way valve comprising a valve body, on which a sealing gasket as described in any one of the above items is arranged.

[0042] In this embodiment, the multi-way valve is a four-way valve, and the sealing gasket is installed between the two valve bodies, and the two valve bodies are sealed and connected by the sealing gasket. In this embodiment, the spokes 3 of the sealing gasket divide the outer ring 1 and the inner ring 2 into four independent partitions, and the four partitions correspond to the four working holes of the four-way valve, respectively. The corresponding holes and grooves of the two valve bodies are connected to each other through the partitions and isolated from the adjacent working holes.

[0043] In other embodiments, a sealing gasket may also be disposed between the valve body of the multi-way valve and the component to be installed to perform a sealing function.

[0044] To summarize, a sealing gasket and a multi-way valve according to the present embodiment include a base section, and the middle parts of the two side edges of the base section have protrusions protruding outward respectively. The protrusions can enhance the strength of the base section at the middle part of the base section to avoid bending of the base section in the middle part. At the same time, since the side edge gradually transitions outward from the end of the side edge to the middle part of the side edge, that is, from the end of the side edge to the middle part of the side edge, the side edge is continuously deflected outward to avoid the formation of a stress concentration point, thereby reducing the risk of the base section bending at the stress concentration point when under pressure, thereby enabling the sealing gasket to seal well.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A sealing gasket, characterized in that: The invention comprises a base section, wherein a cross section of the base section perpendicular to an extending direction of the base section is a basic cross section, wherein the basic cross section has an upper side, a lower side and two side sides located between the upper side and the lower side, wherein the upper side is located on an upper surface of the sealing gasket, and the lower side is located on a lower surface of the sealing gasket, The two side edges are respectively located on two opposite sides of the basic cross section, and the middle parts of the two side edges respectively have protrusions protruding outwards, and the side edges gradually transition outwards from the ends of the side edges to the middle parts of the side edges.

2. The sealing gasket according to claim 1, characterized in that: The base section includes an outer ring base section, the sealing gasket includes a middle part and an outer ring, the outer ring is formed by the outer ring base section surrounding the outer circumference of the middle part, and the rotation axis of the outer ring is arranged along the thickness direction of the sealing gasket.

3. The sealing gasket according to claim 2, characterized in that: The middle part includes an inner ring, the base section includes an inner ring base section, the inner ring is sleeved in the outer ring, the inner ring is formed by rotating and extending the inner ring base section and connecting end to end, and the rotation axis of the inner ring is arranged along the thickness direction of the sealing gasket.

4. The sealing gasket according to claim 3, characterized in that: The middle portion includes spokes, the base segment includes a spoke base segment, the spokes are located between the inner ring and the outer ring, and extend from the inner ring to the outer ring by the spoke base segment, and two ends of the spokes are respectively connected to the outer ring and the inner ring.

5. The sealing gasket according to claim 4, characterized in that: There are a plurality of spokes, which are sequentially arranged around the inner ring, and the spokes divide the outer ring and the inner ring into a plurality of mutually separated separation areas.

6. The sealing gasket according to claim 4, characterized in that: A triangular depression is provided on the upper surface of the sealing gasket and / or the lower surface of the sealing gasket; The recess is arranged at the connection between the spoke and the outer ring, two corners of the triangle are arranged in the extension direction of the outer ring, and the other corner of the triangle is arranged in the extension direction of the spoke, or, The recess is arranged at the connection between the spoke and the inner ring, two corners of the triangle are arranged in the extension direction of the inner ring, and the other corner of the triangle is arranged in the extension direction of the spoke.

7. The sealing gasket according to claim 1, characterized in that: The upper edge extends along the extension direction of the base segment to become the upper top surface of the base segment, and the lower edge extends along the extension direction of the base segment to become the lower bottom surface of the base segment, the upper top surface is located on the upper surface of the sealing gasket, and the lower bottom surface is located on the lower surface of the sealing gasket, and a sealing lip is provided on the upper top surface and / or the lower bottom surface, and the sealing lip is extended along the extension direction of the base segment.

8. The sealing gasket according to any one of claims 1 to 7, characterized in that: The dimension of the basic cross section in the thickness direction of the sealing gasket is H, and the dimension of the basic cross section in a direction perpendicular to the thickness direction of the sealing gasket is W, H>W.

9. The sealing gasket according to any one of claims 1 to 7, characterized in that: The dimension of the protrusion in the thickness direction of the gasket is h, and the dimension of the basic cross section in the thickness direction of the gasket is H, where h>0.1H.

10. A multi-way valve, characterized in that: The invention comprises a valve body, on which a sealing gasket as claimed in any one of claims 1 to 9 is arranged.

Images