Cushioning sealing ring used in methanol automobile electromagnetic valve

Abstract

The utility model provides a cushioning sealing ring used in an electromagnetic valve of a methanol automobile, which comprises a body, the section of the body is I-shaped, one end of the body is a convex part, the other end of the body is a lip, the convex part is trapezoidal, and the lip is V-shaped; by means of the I-shaped special structural design, stress formed by impact and pressure impact is effectively and rapidly released, internal stress is prevented from being collected, permanent compression deformation is prevented, and the requirement for sealing performance can be effectively met through the design of the double lips.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sealing element, concretely relates to a shock absorption sealing ring for methanol automobile electromagnetic valve. BACKGROUND

[0002] The shock absorption sealing ring for methanol automobile electromagnetic valve, the prior art is to use the circular ring type sealing ring of rectangular section. In the use, because its structure is rectangular section, therefore after receiving repeated impact and pressure impact, a large number of internal stress will gather in the material, only to product section extrusion deformation absorption, cannot be released well, therefore product can have larger permanent compression deformation.

[0003] And, the demand of sealing life, the product needs to reach 300 million times impact life demand, the original design will occur extrusion deformation after being impacted, long-term use puts forward higher requirement to the permanent compression deformation resistance of material, the existing seal can only meet 5 million times use in the use process, and sealing failure leakage problem occurs. INNOVATION CONTENT

[0004] The utility model discloses a shock absorption sealing ring for methanol automobile electromagnetic valve.

[0005] To achieve the above object, the utility model adopts the following technical scheme.

[0006] A shock absorption sealing ring for methanol automobile electromagnetic valve, including the body, the section of the body is "G" type, one end of the body is the convex part, the other end of the body is the lip, the convex part is trapezoidal, and the lip is "V" type.

[0007] Further, the lip includes inner lip and outer lip, the outer lip is close to the convex part, and the inner lip is away from the convex part.

[0008] Further, the angle of the inner lip is 110 to 150 degrees.

[0009] Further, the angle of the outer lip is 110 to 150 degrees.

[0010] Further, the convex part is provided with a round corner at the connection with the lip.

[0011] Further, the body adopts a rubber part.

[0012] Further, the body adopts a three-element ethylene-propylene rubber part.

[0013] The utility model discloses a shock absorption sealing ring for methanol automobile electromagnetic valve has the following beneficial effects:

[0014] This invention utilizes a special "I"-shaped structural design to effectively and quickly release the stress generated by impact and pressure, preventing the accumulation of internal stress and the generation of permanent compression deformation. The double-lip design can also effectively meet the sealing performance requirements.

[0015] This invention utilizes the high elasticity and rapid rebound properties of EPDM rubber components to optimize the shock absorption effect while achieving more effective sealing in pressure-impact environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram provided by an embodiment of the present utility model.

[0017] The labels in the diagram are as follows:

[0018] 1. Body; 2. Protrusion; 3. Inner lip opening; 4. Outer lip opening. Detailed Implementation

[0019] The following describes a specific embodiment of a damping sealing ring for a methanol vehicle solenoid valve, in conjunction with the accompanying drawings. However, it should be noted that this specific embodiment is not intended to limit the specific implementation of this utility model. Any similar structures or variations of this utility model should be included within the protection scope of this utility model. The following description of the embodiments is based on the accompanying drawings and is used to illustrate specific embodiments in which this utility model can be implemented. Directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for explanation and understanding of this utility model, and not for limiting this utility model.

[0020] See Figure 1 A damping sealing ring for use in a methanol vehicle solenoid valve includes a body 1, the cross-section of which is I-shaped. One end of the body 1 is a protrusion 2, i.e., the upper end of the body 1 is the protrusion 2 in the figure; the other end of the body 1 is a lip, i.e., the lower end of the body 1 is V-shaped in the figure; the protrusion 2 is trapezoidal, and the lip is V-shaped, with the opening of the V-shape facing downwards in the figure.

[0021] The lip comprises an inner lip 3 and an outer lip 4, the outer lip 4 is close to the convex part 2, and the inner lip 3 is away from the convex part 2, that is, the lower end of the lip in the figure is the inner lip 3. The angle of the inner lip 3 is 110-150 degrees, in an embodiment, the angle of the inner lip 3 is 140 degrees, in an embodiment, the angle of the inner lip 3 is 142 degrees, and in an embodiment, the angle of the inner lip 3 is 145 degrees. The angle of the outer lip 4 is 110-150 degrees, in an embodiment, the angle of the outer lip 4 is 110 degrees, in an embodiment, the angle of the outer lip 4 is 114 degrees, and in an embodiment, the angle of the outer lip 4 is 118 degrees.

[0022] The convex part 2 is provided with a fillet at the connection with the lip, that is, the concave part at the middle position of the body 1 in the figure is provided with a fillet, and the radius of the fillet is 0.1-0.5 mm, in an embodiment, the radius of the fillet is 0.2 mm, and in an embodiment, the radius of the fillet is 0.3 mm.

[0023] The body 1 is made of rubber, and the body 1 is made of ethylene-propylene-diene rubber.

[0024] The existing technology of the shock-absorbing sealing ring in the electromagnetic valve of a methanol automobile is to use a circular ring type sealing ring with a rectangular cross section. In the use process, due to the structure of the rectangular cross section, a large amount of internal stress will be gathered in the material after receiving repeated impact and pressure impact, and only the product cross section can be extruded and deformed to absorb, and cannot be well released, so that the product has a large permanent compression deformation. The sealing life requirement is that the product needs to achieve 300 million impact life requirement, the original design will be extruded and deformed after impact, and long-term use puts high requirements on the permanent compression resistance of the material. The existing sealing can only meet 5 million times of use in the use process, and leakage problem occurs.

[0025] When developing a new product, first of all, the stress distribution of the original design is analyzed, realized through FEA software, and in the simulation process, it is found that the original design is difficult to meet the impact and pressure impact environment, the area with large stress concentration is optimized and designed under this condition, and through continuous iteration and simulation, the structure of the I-shaped sealing is finally determined,

[0026] 2. Provide samples to the final party, pass physical performance authentication and actual machine test, and the test results prove that the product can fully meet the use demand and life demand of the actual user.

[0027] The prototype is tested for life and sealing performance, and the specific test conditions are as follows:

[0028] 1. Pressure: 10-20 MPa high-low pressure cycle

[0029] 2. Temperature: -40 to 150℃

[0030] 3. Medium: methanol solution

[0031] 4. Operating mode: continuous operation

[0032] 5. Life requirement: 300 million impacts

[0033] After repeated verification, the shock absorbing sealing ring used in the electromagnetic valve of methanol car finally passed the real machine test, met the sealing requirement and life requirement.

[0034] The shock absorbing sealing ring used in the electromagnetic valve of methanol car realizes a key breakthrough in the methanol car parts industry, greatly improves the service life of the complete equipment, and speeds up the progress of China in the field of methanol car research. Greatly saves the maintenance cost and increases the production efficiency of the actual use party, and achieves high economic benefits.

[0035] The utility model discloses a special structure design of "G" type, converts the impact and pressure impact in the use process into the deformation of product, instead of extrusion deformation, and the stress formed by impact and pressure impact is deformed and buffered by the two lips of the "G" type structure, and can be released quickly, prevents the sharp increase of internal stress, and reduces the possibility of permanent compression deformation of product.

[0036] The original polyurethane rubber material is used to cope with impact and pressure impact through high hardness and high elasticity, but the material does not have high resilience, and the shock absorbing effect is relatively poor due to the too large material hardness, so we replace it with EPDM (ethylene propylene rubber) rubber material, which uses high elasticity and fast rebound performance to cope with impact and pressure impact, and the hardness of Shore A 70° can meet the shock absorbing requirement and also provide good sealing performance through actual test feedback.

Claims

1. A damping sealing ring for use in a methanol vehicle solenoid valve, characterized in that, The body includes a body with an "I" shaped cross-section, one end of the body is a protrusion, and the other end of the body is a lip. The protrusion is trapezoidal, and the lip is "V" shaped.

2. The damping sealing ring for a methanol vehicle solenoid valve according to claim 1, characterized in that, The lip opening includes an inner lip opening and an outer lip opening, with the outer lip opening close to the protrusion and the inner lip opening away from the protrusion.

3. The damping sealing ring for a methanol vehicle solenoid valve according to claim 2, characterized in that, The angle of the inner lip opening is 110 to 150 degrees.

4. The damping sealing ring for a methanol vehicle solenoid valve according to claim 2, characterized in that, The angle of the outer lip is 110 to 150 degrees.

5. The damping sealing ring for a methanol vehicle solenoid valve according to claim 1, characterized in that, The protrusion is provided with a rounded corner at the connection point with the lip.

6. The damping sealing ring for a methanol vehicle solenoid valve according to claim 1, characterized in that, The main body is made of rubber.

7. The damping sealing ring for a methanol vehicle solenoid valve according to claim 6, characterized in that, The main body is made of EPDM rubber.

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