A high pressure resistant polyether ether ketone seal

Abstract

The utility model discloses a kind of high-pressure-resistant polyether ether ketone sealing parts, it is related to sealing part technical field, including injection molding part, its section is quadrilateral, one side of the quadrilateral is arc concave part, and the arc concave part both ends to the junction of quadrilateral adjacent two sides is blade type angle side;The side of quadrilateral adjacent the arc concave part is inclined plane, to make the rectangle be right trapezoid;Rectangular groove with section is set on one side of the quadrilateral and the arc concave part opposite, the recess of quadrilateral groove is set on one side of the quadrilateral and the arc concave part opposite.The utility model is designed by unique arc concave part, blade type angle side and inclined plane structure, in combination with the excellent performance of PEEK material, effectively solve the leakage problem caused by friction heat hardening and oil pressure impact of traditional sealing part, with high-pressure-resistant, high-temperature-resistant, low friction and long life etc.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, specifically a high-pressure resistant polyether ether ketone (PEEK) seal. Background Technology

[0002] In the oil seal system of a hydraulic hammer, the inner ring of the seal continuously rubs against the inner wall of the piston rod, generating a cumulative heat effect during high-speed reciprocating motion, leading to thermal hardening of the sealing material. Meanwhile, the high-pressure oil generated during piston movement creates periodic impact loads on the sealing structure. The combined effect of these two factors over a long period eventually causes damage to the sealing structure, resulting in hydraulic oil leakage. Utility Model Content

[0003] The purpose of this invention is to provide a high-pressure resistant polyether ether ketone (PEEK) seal to address the aforementioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-pressure resistant polyether ether ketone seal includes an injection-molded part with a quadrilateral cross-section. One side of the quadrilateral is an arc-shaped recess, and the junction of the two ends of the arc-shaped recess to the two adjacent sides of the quadrilateral is a blade-shaped corner edge.

[0006] The quadrilateral has a sloping side adjacent to the arc-shaped recess, so that the rectangle is a right trapezoid.

[0007] A rectangular groove is formed on one side of the quadrilateral opposite to the arc-shaped recess.

[0008] Preferably, the injection molded part has a circular structure.

[0009] Preferably, the arc-shaped recess is the inner ring surface of a circular structure.

[0010] Preferably, the groove is located on the outer surface of the circular structure and close to the interior of the inclined surface.

[0011] Preferably, the inclined surface is the inner ring surface of the circular structure.

[0012] Preferably, the inclined surface is inclined from the outer ring surface to the inner ring surface.

[0013] Preferably, the outer ring of the inclined surface is an arc-shaped surface, and the two are on the same plane.

[0014] Preferably, the blade surface facing the inner ring surface on the side of the blade-shaped corner is an inclined surface, while the blade surface opposite to the inclined surface is an arc surface.

[0015] In the above technical solution, the high-pressure resistant polyether ether ketone (PEEK) seal provided by this utility model has the following beneficial effects: the arc-shaped recess and blade-shaped corner design optimize the pressure distribution of the sealing contact surface, enhance dynamic sealing capability, and reduce the risk of leakage of high-pressure oil. The structural design of the inclined surface and arc-shaped recess reduces the contact area between the seal and the piston rod, reduces frictional heat generation, and avoids material thermal hardening failure. The groove can buffer the impact force of high-pressure oil and prevent the seal from deforming or cracking due to high-frequency oil pressure fluctuations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram provided for an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Injection molded part; 2. Arc-shaped recess; 3. Edge-shaped corner; 4. Bevel; 41. Arc-shaped surface; 5. Groove. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Please see Figure 1-2 This utility model provides a technical solution: a high-pressure resistant polyether ether ketone seal, including a circular injection molded part 1 with a quadrilateral cross section, one side of the quadrilateral being an arc-shaped recess 2 (the arc-shaped recess 2 being the inner ring surface of the circular structure), and the junction of the two ends of the arc-shaped recess 2 to the two adjacent sides of the quadrilateral being blade-shaped corner edges 3.

[0023] One side of the adjacent arc-shaped recess 2 of the quadrilateral is a sloping surface 4 (the inner ring surface of the circular structure) so that the rectangle is a right trapezoid;

[0024] A rectangular groove 5 is provided on one side of the quadrilateral opposite to the arc-shaped recess 2 (the groove 5 is located on the outer ring surface of the circular structure and close to the inside of the inclined surface 4).

[0025] Furthermore, the outer ring of the inclined surface 4 is an arc-shaped surface 41, and the two are on the same plane. The cutting edge 3 facing the inner ring surface is an inclined surface, while the cutting edge opposite to this inclined surface is an arc-shaped surface.

[0026] In the aforementioned technology, the arc-shaped recess 2 and the blade-shaped corner edge 3 optimize the pressure distribution of the sealing contact surface, enhance dynamic sealing capability, and reduce the risk of leakage of high-pressure oil. The structural design of the inclined surface 4 and the arc-shaped recess 2 reduces the contact area between the seal and the piston rod, reduces frictional heat generation, and avoids material thermal hardening failure. The groove 5 can buffer the impact force of high-pressure oil and prevent the seal from deforming or cracking due to high-frequency oil pressure fluctuations.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-pressure resistant polyetheretherketone (PEEK) seal, characterized in that, The injection molded part (1) has a quadrilateral cross section, one side of the quadrilateral is an arc-shaped recess (2), and the two ends of the arc-shaped recess (2) are joined to the two adjacent sides of the quadrilateral to form a blade-shaped corner edge (3). The quadrilateral is adjacent to the arc-shaped recess (2) on one side of the slope (4). A rectangular groove (5) is provided on one side of the quadrilateral opposite to the arc-shaped recess (2).

2. The high-pressure resistant polyetheretherketone (PEEK) seal according to claim 1, characterized in that, The injection molded part (1) has a circular structure.

3. The high-pressure resistant polyetheretherketone (PEEK) seal according to claim 2, characterized in that, The arc-shaped recess (2) is the inner ring surface of a circular structure.

4. A high-pressure resistant polyetheretherketone (PEEK) seal according to claim 3, characterized in that, The groove (5) is located on the outer ring surface of the circular structure and close to the interior of the inclined surface (4).

5. A high pressure resistant polyether ether ketone seal according to claim 4, wherein The inclined surface (4) is the inner ring surface of the circular structure.

6. A high pressure resistant polyether ether ketone seal according to claim 5, wherein The inclined plane (4) is inclined from the outer ring to the inner ring.

7. A high pressure resistant polyether ether ketone seal according to claim 6, wherein The outer ring of the inclined plane (4) is an arc-shaped surface (41), and the two are on the same plane.

8. A high pressure resistant polyether ether ketone seal according to claim 7, characterized in that The blade face of the blade-shaped corner edge (3) facing the inner ring surface is an inclined surface, while the blade face opposite to the inclined surface is an arc surface.

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