Shaft check ring with high sealing performance

Abstract

The utility model discloses a shaft check ring with high sealing performance, which relates to the technical field of check rings, and comprises a check ring body, a first sealing ring and a second sealing ring, the periphery of the check ring body is provided with a placing groove, the placing groove forms an inclined plane, the first sealing ring is arranged on the placing groove, and the second sealing ring is arranged on the placing groove. A groove is formed in the side, away from the first sealing ring, of the check ring body, the second sealing ring is arranged in the groove, the check ring body is shrunk at first, under the recovery effect of the check ring body, outward force is applied to the first sealing ring, in turn, the first sealing ring applies inward force to the check ring body, the inclined face of the containing groove inclines downwards, and the second sealing ring is arranged in the groove. The inward force applied to the check ring body by the first sealing ring is partially changed into downward force, and the second sealing ring is pressed, so that the sealing performance is improved; and through double sealing of the first sealing ring and the second sealing ring, inclined plane design and elastic difference optimization, the sealing performance is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a retaining ring technical field especially, it relates to a high sealing property axle retaining ring. BACKGROUND

[0002] The axle retaining ring is a kind of mechanical element for fixing the position of parts on shaft, usually installed in the groove of shaft, prevents the axial movement of parts.It is widely used in machinery, automobile, aerospace and other fields, with simple structure, easy installation, low cost and other advantages.

[0003] The patent with publication date September 8, 2023 and announcement number CN219655026U discloses an axle retaining ring, comprising two outer retaining rings, an adjusting mechanism is arranged between the two outer retaining rings, fixed blocks are arranged at both ends of the outer retaining ring, mounting strips are fixedly connected at both ends of the outer retaining ring, a wedge groove is formed in the bottom of the mounting strip, a first wedge block matched with the wedge groove is fixedly connected on one side of the top of the fixed block, a second wedge block matched with the wedge groove is fixedly connected on the other side of the top of the fixed block, a rotating baffle is rotatably connected on one side of the mounting strip, a first magnet is fixedly connected on one side of the rotating baffle, and a second magnet is fixedly connected on one side of the second wedge block;The utility model through the setting of wedge groove makes the fixed block convenient to disassemble and replace, so that different size models of fixed blocks are conveniently replaced, and the applicability of the device is further increased.

[0004] The traditional axle retaining ring is mainly installed in the groove of shaft through elastic deformation, but its sealing performance is poor, and it cannot effectively prevent the invasion of liquid, gas or dust.In humid, corrosive or high-pollution environment, the insufficient sealing of traditional retaining ring will cause equipment wear, corrosion or failure;The above scheme sets adjusting mechanism, inserts limiting strip into different limiting holes, changes the length of slide rod, adjusts the thickness between the two outer retaining rings, and further adjusts the overall thickness of the retaining ring, and the setting of wedge groove makes the fixed block convenient to disassemble and replace, so that different size models of fixed blocks are conveniently replaced, and the applicability of the device is further increased, but the sealing property of the axle retaining ring is not improved in the scheme, and the sealing performance is similar to that of traditional axle retaining ring.

[0005] Therefore, it is necessary to provide a high sealing property axle retaining ring. UTILITY MODEL CONTENTS

[0006] The axle retaining ring provided by the embodiment of the present application can improve the poor sealing performance of the axle retaining ring in the related art, cannot effectively prevent the invasion of liquid, gas or dust, and the insufficient sealing in humid, corrosive or high-pollution environment will cause equipment wear, corrosion or failure.

[0007] The embodiment of the present application provides a high-sealing shaft check ring, which comprises a check ring body, a first sealing ring and a second sealing ring, a placing groove is formed on the periphery of the check ring body, the placing groove is designed as a slope, the first sealing ring is arranged on the placing groove, a groove is formed on the side of the check ring body away from the first sealing ring, and the second sealing ring is arranged in the groove.

[0008] The embodiment of the present application provides a high-sealing shaft check ring, the first sealing ring is located on the periphery of the check ring body, is tightly fitted with the placing groove through the slope design, forms a first sealing barrier, prevents external pollutants from entering or internal medium from leaking, is located on the other side of the check ring body, forms a second sealing barrier, and further enhances the sealing effect, so that high sealing can be maintained under complex working conditions; in the use process, the check ring body is first contracted, then the check ring body is subjected to the restoring deformation capacity of the check ring body, an outward force is applied to the first sealing ring, the first sealing ring applies an inward force to the check ring body, the inward force applied by the first sealing ring to the check ring body is partially changed into a downward force, and the sealing property is increased.

[0009] The technical scheme has at least the following technical effects: in the use process, the check ring body is first contracted, then the check ring body is subjected to the restoring deformation capacity of the check ring body, an outward force is applied to the first sealing ring, the first sealing ring applies an inward force to the check ring body, the inward force applied by the first sealing ring to the check ring body is partially changed into a downward force, and the sealing property is increased; through the double sealing of the first sealing ring and the second sealing ring, the slope design and the elastic difference optimization, the sealing performance, the reliability and the service life are significantly improved, the maintenance cost is reduced, and the high-sealing shaft check ring is suitable for various complex working conditions.

[0010] In some embodiments, the first sealing ring and the second sealing ring both have elasticity, and the first sealing ring has stronger elasticity.

[0011] In some embodiments, the check ring body is further provided with a protruding block, an operating pliers hole is formed in the protruding block, and the protruding block is integrally connected with the check ring body.

[0012] In some embodiments, the check ring body is provided with a fixing piece for fixing the second sealing ring.

[0013] In some embodiments, a groove is formed in the inner side of the retainer ring body, and a pressurizing retainer rod is arranged in the groove, both ends of the pressurizing retainer rod abutting against the groove in the inner side of the retainer ring body.

[0014] In some embodiments, the pressurizing retainer rod comprises a first rod body, a second rod body, and a connecting ring, a thread is formed in one end of the first rod body away from the retainer ring body, the connecting ring is threadedly connected with the first rod body, and the second rod body is fixedly connected with the connecting ring.

[0015] In some embodiments, the surface of the retainer ring body is coated with wear-resistant material. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 A schematic diagram of the overall structure of the high-sealing retainer ring for shaft provided by the embodiments of the present application is shown in the figure.

[0018] Figure 2 Another schematic diagram of the overall structure of the high-sealing retainer ring for shaft provided by the embodiments of the present application is shown in the figure.

[0019] Figure 3 An exploded view of the overall structure of the high-sealing retainer ring for shaft provided by the embodiments of the present application is shown in the figure.

[0020] In the figure, various reference signs are as follows:

[0021] 1, retainer ring body; 2, first sealing ring; 3, second sealing ring; 4, placing groove; 5, protruding block; 6, operating tongs hole; 7, fixing member; 8, pressurizing retainer rod; 81, first rod body; 82, second rod body; 83, connecting ring. DETAILED DESCRIPTION

[0022] Based on this, in order to improve the poor sealing performance of the retainer ring for shaft in the related art, prevent the invasion of liquid, gas or dust, and solve the problem that insufficient sealing will cause equipment wear, corrosion or failure in a humid, corrosive or highly-polluted environment, the embodiments of the present application provide the following solutions.

[0023] Please refer to Figure 1 and Figure 2The sealing ring includes a blocking ring body 1, a first sealing ring 2, and a second sealing ring 3. A placement groove 4 is formed on the periphery of the blocking ring body 1, and the placement groove 4 forms an inclined surface. The first sealing ring 2 is bonded to the placement groove 4, and the inner wall of the first sealing ring 2 abuts against the placement groove 4. A groove is formed on the side of the blocking ring body 1 away from the first sealing ring 2, and the second sealing ring 3 is fixedly connected in the groove. Both the first sealing ring 2 and the second sealing ring 3 have elasticity, and the first sealing ring 2 has stronger elasticity. The surface of the blocking ring body 1 is coated with a wear-resistant material.

[0024] In this way, the first sealing ring 2 is located on the periphery of the blocking ring body 1 and tightly fits the placement groove 4 through the inclined surface design, forming a first sealing barrier to prevent external contaminants from entering or internal medium from leaking. The first sealing ring 2 is located on the other side of the blocking ring body 1, forming a second sealing barrier to further enhance the sealing effect and ensure high sealing performance under complex working conditions. During use, the blocking ring body 1 is first contracted, and then exerts an outward force on the first sealing ring 2 under the restoring deformation ability of the blocking ring body 1 itself. In turn, the first sealing ring 2 exerts an inward force on the blocking ring body 1. Since the inclined surface of the placement groove 4 is inclined downward, the inward force exerted by the first sealing ring 2 on the blocking ring body 1 becomes a downward force, which is equivalent to a pressure on the second sealing ring 3, thereby increasing the sealing performance. The first sealing ring 2 has stronger elasticity and can better adapt to the dynamic changes between the shaft and the sealing ring, such as vibration and thermal expansion, thereby providing more stable sealing effect. Through the double sealing of the first sealing ring 2 and the second sealing ring 3, the inclined surface design, and the elasticity difference optimization, the sealing performance, reliability, and service life are significantly improved, while the maintenance cost is reduced. The wear-resistant coating can effectively reduce the wear of the sealing ring caused by friction, vibration, or impact during operation, thereby prolonging the service life of the sealing ring. The wear-resistant material usually has good corrosion resistance, which can protect the sealing ring from being eroded by chemicals or environmental factors.

[0025] Optionally, in some embodiments, please refer to Figures 1-3 The blocking ring body 1 is further provided with a protrusion 5, and the protrusion 5 is provided with an operating pliers hole 6. The protrusion 5 is integrally connected with the blocking ring body 1.

[0026] In this way, through the operating pliers hole 6, the sealing ring can be easily installed or removed using special tools such as sealing ring pliers, especially in situations where space is limited or precise operation is required, greatly improving the convenience of operation. The protrusion 5 is integrally connected with the blocking ring body 1, enhancing the overall structural strength of the sealing ring and making it less likely to deform or break during installation and removal, thereby improving the durability of the sealing ring.

[0027] Optionally, in some embodiments, please refer to Figure 1 and Figure 2 The blocking ring body 1 is further provided with a protrusion 5, and the protrusion 5 is provided with an operating pliers hole 6. The protrusion 5 is integrally connected with the blocking ring body 1.

[0028] In this way, under the operation of the special tool, the blocking ring body 1 will shrink during installation and disassembly, causing the groove accommodating the second sealing ring 3 to become smaller, and the second sealing ring 3 may be extruded off the blocking ring body 1. The second sealing ring 3 can be firmly fixed on the blocking ring body 1 through the clamping fixing piece 7, avoiding displacement or falling of the sealing ring due to factors such as vibration, impact or thermal expansion, ensuring the durability of the sealing effect. Moreover, as the service life of the second sealing ring is shorter than that of the metal products such as the blocking ring body 1 and the fixing piece 7, when the second sealing ring 3 needs to be maintained or replaced, the clamping fixing piece 7 can be quickly disassembled and reinstalled, reducing downtime and maintenance costs.

[0029] Optionally, in some embodiments, referring to Figure 1 , an annular groove is formed on the inner side of the blocking ring body 1, and a pressurizing blocking rod 8 is arranged in the annular groove. The pressurizing blocking rod 8 includes a first rod body 81, a second rod body 82 and a connecting ring 83. A thread is formed on the end of the first rod body 81 away from the blocking ring body 1. The connecting ring 83 is threadedly connected with the first rod body 81. The second rod body 82 is fixedly connected with the connecting ring 83. The end of the first rod body 81 away from the connecting ring 83 and the end of the second rod body 82 away from the connecting ring 83 are in abutment with the annular groove on the inner side of the blocking ring body 1.

[0030] In this way, the pressurizing blocking rod 8 is in abutment with the annular groove through the first rod body 81 and the second rod body 82, which can press the blocking ring body 1 and further press the first sealing ring 2. The first sealing ring 2 in turn presses the second sealing ring 3, increasing the contact between the first sealing ring 2, the second sealing ring 3 and the blocked object, thereby improving the overall sealing performance. The threaded connection design of the pressurizing blocking rod 8 makes installation and adjustment more convenient, without the need for complex tools or steps, reducing installation difficulty and time. By rotating the connecting ring 83, the overall length of the pressurizing blocking rod 8 can be adjusted. After shortening the overall length of the pressurizing blocking rod 8, the pressurizing blocking rod 8 can be more easily located in the annular groove. For example, the first rod body 81 is in abutment with the annular groove, and then the connecting ring 83 is rotated to continuously increase the overall length of the pressurizing blocking rod 8, so that the second rod body 82 presses the annular groove, enhancing the reliability of the overall structure. At the same time, the pressurizing blocking rod 8 plays a redundant pressure role to some extent. As time goes on, the elastic restoring force of the blocking ring decreases, and the pressurizing blocking rod 8 continues to ensure the sealing effect of the blocking ring through pressure.

[0031] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high sealing property shaft retainer, characterized by: Including the baffle ring body (1), first sealing ring (2) and second sealing ring (3), the outer periphery of the baffle ring body (1) is provided with a placing groove (4), the placing groove (4) forms a slope, the first sealing ring (2) is arranged on the placing groove (4), the baffle ring body (1) is provided with a groove away from the first sealing ring (2) side, the second sealing ring (3) is arranged in the groove.

2. The high sealing property shaft retaining ring according to claim 1, wherein The first sealing ring (2) and the second sealing ring (3) are both elastic, and the first sealing ring (2) has stronger elasticity.

3. The high sealing capability shaft retaining ring according to claim 2, wherein The baffle ring body (1) is further provided with a lug (5), the lug (5) is provided with an operating forceps hole (6), and the lug (5) is integrally connected with the baffle ring body (1).

4. The high sealing capability shaft retaining ring according to claim 3, wherein The baffle ring body (1) is provided with a fixing part (7) for fixing the second sealing ring (3).

5. The high sealing capability shaft retaining ring according to claim 4, wherein The inner side of the baffle ring body (1) is provided with a groove, and the groove is provided with a pressurizing stop stick (8), and the both ends of the pressurizing stop stick (8) are abutted with the groove of the inner side of the baffle ring body (1).

6. The high sealing capability shaft retaining ring according to claim 5, wherein The pressurizing stop stick (8) comprises a first stick body (81), a second stick body (82) and a connecting ring (83), one end of the first stick body (81) away from the baffle ring body (1) is provided with a thread, the connecting ring (83) is threadedly connected with the first stick body (81), and the second stick body (82) is fixedly connected with the connecting ring (83).

7. The high sealing capability shaft retaining ring according to claim 6, wherein The surface of the baffle ring body (1) is coated with wear-resistant material.

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