CN210834018U - Seals and seal leak detection equipment - Google Patents

Abstract

The sealing ring and the sealing leakage detection device of the utility model comprise a body section and a first deformation section arranged at the lower end of the body section. The first deformation section is used to abut against the product to be tested and form a sealing surface with the product to be tested; In the direction of the body segment, the inner diameter of the first deformation segment increases, the outer diameter increases, and the thickness decreases. By setting the first deformation section at the lower end of the body section with increased inner diameter, increased outer diameter and reduced thickness, the sealing ring does not need to be pressed against the product to be tested by applying external force to increase the sealing like the existing O-ring sealing ring. Instead, the negative pressure generated by the sealing leakage detection device itself can be used to deform the first deformation section, and the inner wall of the first deformation section is gradually deformed from bottom to top until it is in contact with the surface of the product to be tested to achieve a sealed state. The entire sealing ring is pressed down, so that the product to be tested will not be imprinted due to the pressing force.

Description

Seals and seal leak detection equipment

technical field

The utility model belongs to the technical field of sealing, in particular to a sealing ring and sealing leakage detection equipment.

Background technique

At present, when the product is sealed and tested by the sealing leakage detection equipment, the upper mold mounting block is pressed on the product to be tested, and then the upper mold mounting block is connected to the sealing instrument to test the tightness of the product. A sealing ring is set at the contact between the installation block and the product to improve the reliability of detection.

At present, the traditional O-ring seal is used for sealing. As shown in Figure 1, in order to install the existing O-ring seal ring upper module installation block diagram, to achieve the sealing state, the O-ring The sealing ring 4 exerts a force of size F. At this time, due to the existence of pressure, the problem of forming an imprint on the product to be tested or crushing the product to be tested 3 is caused. This solution is suitable for the sealing test of most products, but For products that cannot have pressure scars or imprints on the surface, this solution cannot be applied, because the extrusion of the O-ring by external force will leave imprints on the surface of the product, which cannot meet the requirements.

Utility model content

The technical problem to be solved by the utility model is: for the existing sealing ring due to structural reasons, it will produce imprints on the product to be tested or cause pressure injury to the product during use, and provide a sealing ring and sealing leakage detection. equipment.

In order to solve the above technical problems, an embodiment of the present invention provides a sealing ring, which includes a body segment and a first deformation segment arranged at the lower end of the body segment, and the first deformation segment is used to abut against the product to be tested and interact with the product to be tested. A sealing surface is formed between the products to be tested; along the direction away from the body segment, the inner diameter of the first deformation segment increases, the outer diameter increases, and the thickness decreases.

Optionally, the first deformation segment is in the shape of a cone as a whole, and the inner surface of the first deformation segment is a flat conical surface.

Optionally, the inner surface of the first deformation section and the inner surface of the body section transition through a rounded corner; the outer surface of the first deformation section and the outer surface of the body section transition through a rounded corner.

Optionally, an end of the inner surface of the first deformation segment close to the body segment is higher than an end of the outer surface of the first deformation segment close to the body segment.

On the other hand, the utility model also provides a sealing leakage detection device, comprising a sealing instrument, an upper mold mounting block and the above-mentioned sealing ring, wherein an air passage is opened in the upper mold mounting block, and the upper mold mounting block is provided with an air passage. An installation groove is arranged on the installation block; the installation groove is arranged outside the outer periphery of the air passage, the sealing ring is installed in the installation groove, and the first deformation section extends out of the installation groove.

The sealing ring and the sealing leakage detection device provided by the embodiment of the present invention have good sealing performance, simple structure and are suitable for mass production; when the sealing leakage detection device performs the sealing detection of the product to be tested, the sealing ring of the present invention can perform sealing at the same time. , it will not produce imprints on the surface of the product to be tested or crush the product to be tested; by setting the first deformation section at the lower end of the body section with an increased inner diameter, an increased outer diameter and a smaller thickness, the sealing ring does not need to be as existing The same as the O-ring seal, the external force is applied against the product to be tested to increase the sealing performance, but the negative pressure generated by the seal leakage detection device itself can be used to deform the first deformation section, and the inner wall of the first deformation section is from bottom to top. Gradually deform to fit with the surface of the product to be tested to achieve a sealing state. Since there is no need to press down the entire sealing ring, the product to be tested will not be imprinted due to the extrusion force.

Description of drawings

Fig. 1 is the use state diagram of the upper module installation block with the existing O-ring installed;

2 is a schematic structural diagram of a sealing ring provided by an embodiment of the present invention;

Fig. 3 is the sectional view at A-A place in Fig. 2;

Fig. 4 is the top view of the sealing ring of Fig. 2;

FIG. 5 is a use state diagram of the upper mold mounting block with the sealing ring in FIG. 2 installed.

The reference numbers in the description are as follows:

1. Body segment; 11. First deformation segment; 11a, inner surface; 11b, outer surface;

2. Upper module installation block; 21. Air channel;

3. The product to be tested;

4. O-ring.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

As shown in FIGS. 2-4 , a sealing ring provided by an embodiment of the present invention includes a body section 1 and a first deformation section 11 arranged at the lower end of the body section 1 , and the first deformation section 11 is used to interfere with the product to be tested. 3 and form a sealing surface with the product to be tested 3; along the direction away from the body section 1, the inner diameter of the first deformation section 11 increases, the outer diameter increases, and the thickness decreases.

The sealing ring of the utility model is suitable for sealing leakage detection equipment, and the sealing ring is installed on the sealing ring upper module installation block in the sealing leakage detection equipment.

The sealing ring provided by the embodiment of the present utility model has good sealing performance, simple structure and is suitable for mass production; when the sealing leakage detection device performs sealing detection on the product to be tested 3, the sealing ring of the present utility model performs sealing and will not The surface of the product to be tested 3 produces imprints or crushes the product to be tested; by setting the first deformation section 11 at the lower end of the body section 1 with an increased inner diameter, an increased outer diameter, and a smaller thickness, the sealing ring does not need to be like the existing one. Like the O-ring 4, the product 3 to be tested is pressed against the product 3 by external force to increase the sealing performance, but the negative pressure generated by the sealing leakage detection device itself can be used to deform the first deformation section 11, and the inner wall of the first deformation section 11 can be deformed. Gradually deform from bottom to top until it is in contact with the surface of the product 3 to be tested to achieve a sealing state. Since there is no need to press down the entire sealing ring, the product to be tested 3 will not be imprinted due to the extrusion force.

In an embodiment, as shown in FIG. 2 and FIG. 3 , the first deformation section 11 is in the shape of a cone as a whole, and the inner surface 11 a of the first deformation section 11 is a flat cone surface. By designing the inner surface 11a of the first deformation section 11 as a flat conical surface, when the external air pressure acts on the first deformation section 11, the inner surface 11a of the first deformation section 11 can be in close contact with the product to be tested 3, so as to achieve Better sealing effect.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the inner surface 11a of the first deformation segment 11 and the inner surface of the body segment 1 are transitioned through rounded corners; the outer surface 11b of the first deformation segment 11 and the body segment 1 The outer surface is transitioned by rounded corners. The rounded transition can improve the overall continuity of the sealing ring, and it is not easy to use fatigue during use, and the service life can be improved. A gap is formed, which is favorable for external air pressure to act on the first deformation section 11 .

In one embodiment, as shown in FIGS. 2 and 3 , the end of the inner surface 11a of the first deformation segment 11 close to the body segment 1 is higher than the end of the outer surface 11b of the first deformation segment 11 close to the body segment 1 . This design can increase the surface area of the inner surface 11a of the first deformation section 11, so that the contact area between the first deformation section 11 and the product to be tested 3 is larger, which is beneficial to improve the sealing performance.

Specifically, the size and shape of the sealing ring can be adjusted according to the size and shape of the specific product to be tested, so as to facilitate installation and sealing.

On the other hand, as shown in FIG. 5 , the present invention also provides a sealing leak detection device, which includes a sealing instrument (not shown), an upper mold mounting block 2 and the above-mentioned sealing ring. An air passageway 21 is opened, and an installation groove (not shown) is provided on the upper die mounting block 2; out of the mounting slot.

When detecting the tightness of the product to be tested 3, the first deformation section 11 of the sealing ring is in contact with the product to be tested 3, and one end of the air passage 21 is communicated with a sealing instrument (not shown), so that the sealing ring, the product to be tested 3 and the Negative pressure is formed between the upper die mounting blocks 2 , and after the first deformation section 11 of the sealing ring is in close contact with the product to be tested 3 , the sealing leakage detection device detects the tightness of the product to be tested 3 . It is easy to operate and makes full use of the characteristics of the negative pressure generated by the sealing leakage detection equipment itself, and will not leave imprints or crush the product when the sealing state is achieved.

Taking the sealing ring in an embodiment as an example, when the sealing ring is installed on the installation groove, the first deformation section 11 extends out of the installation groove to contact the surface of the product to be tested 3 . As shown in FIG. 5 , the use state of the upper mold mounting block 2 when the product 3 to be tested is sealed and tested by the sealing leakage detection device. The arrow in the figure is the flow direction of the air flow. When the sealing leakage detection device is working, the air passage 21 The air between the sealing ring, the product to be tested 3 and the upper die mounting block 2 is extracted to form a negative pressure. At this time, under the action of external air pressure, the first deformation section 11 is deformed and is in close contact with the product to be tested 3. sealed state.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of protection.

Claims (5)

1. A sealing ring, characterized in that it comprises a body segment and a first deformation segment arranged at the lower end of the body segment, and the first deformation segment is used to interfere with the product to be tested and be between the product to be tested and the product to be tested. A sealing surface is formed; along the direction away from the body segment, the inner diameter of the first deformation segment increases, the outer diameter increases, and the thickness decreases. 2 . The sealing ring according to claim 1 , wherein the first deformation section is in the shape of a cone as a whole, and the inner surface of the first deformation section is a flat conical surface. 3 . 3 . The sealing ring according to claim 1 , wherein the inner surface of the first deformation section and the inner surface of the body section transition through a rounded corner; the outer surface of the first deformation section and the The outer surfaces of the body segments are transitioned by rounded corners. 4 . The sealing ring according to claim 3 , wherein an end of the inner surface of the first deformation section close to the body section is higher than the outer surface of the first deformation section close to the body section one end. 5. A sealing leak detection device, comprising a sealing instrument and an upper die mounting block, characterized in that it further comprises the sealing ring according to any one of claims 1-4, wherein a gas path is opened in the upper die mounting block The upper module mounting block is provided with an installation groove; the installation groove is arranged outside the outer circumference of the air passage, the sealing ring is installed in the installation groove, and the first deformation section extends out of the mounting slot.

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