Flexible mounting device for spring energy storage sealing ring of piston body

Abstract

The utility model provides a flexible installation device for a spring energy storage sealing ring of a piston body. The flexible installation device comprises a flexible tentacle type installation device, an outer taper sleeve rod and a sleeve type shape adjusting device. The flexible tentacle type mounting device comprises a handle part and a rubber flexible tentacle part, a plurality of rubber tentacles are arranged on one side of the handle part, the rubber tentacles extend horizontally, and rigid pushing pieces are embedded into the tail ends of the rubber tentacles; the outer conical sleeve rod comprises a conical guide part and a positioning flange, the outer diameter of the conical guide part is gradually increased from one end to the other end, the positioning flange is arranged at the large-outer-diameter end of the conical guide part, and the outer conical sleeve rod is inserted into an inner hole of the piston body through the positioning flange to be fixed with the piston body; the casing pipe type shape adjusting device comprises a casing pipe body, the inner diameter of the casing pipe body is matched with the outer diameter of the piston body, and openings in the two ends of the casing pipe body are each provided with a conical guide part. The device can effectively prevent the spring energy storage sealing ring of the piston body from being scratched, deformed, inaccurate in positioning and the like in the mounting process.

Description

Technical Field

[0001] The utility model belongs to the technical field of seal installation, and particularly relates to a flexible installation device for a spring energy storage seal ring of a piston body. Background Technique

[0002] In various mechanical devices, the piston body usually undertakes the key tasks of reciprocating motion or rotational motion, and ensuring the sealing performance between the piston body and the cylinder barrel is the core element for the normal operation of the device. For this reason, the spring energy storage seal ring is widely used in the sealing system of the piston body, and it generates continuous sealing pressure in the sealing groove through the internal spring structure. However, when installing the spring energy storage seal ring into the sealing groove on the outer surface of the piston body, the traditional installation methods often have significant deficiencies.

[0003] In the prior art, the spring energy storage seal ring usually needs to be stretched and deformed before being installed into the sealing groove of the piston body. However, due to the complex design of the piston body surface and the sealing groove, the manual installation or the installation method relying on simple tools not only makes the operation very difficult, but also easily causes scratches or deformation to the seal ring during the installation process. These problems will lead to inaccurate positioning of the seal ring in the sealing groove, thereby affecting the sealing performance, and even may cause seal failure, resulting in unstable operation of the device.

[0004] Especially in the application of piston bodies with high-precision sealing requirements, the traditional installation methods are even more unable to meet the needs. The spring energy storage seal ring is prone to excessive stress concentration due to the lack of effective guiding and positioning tools during the installation process, resulting in damage or poor sealing effect of the seal ring during use. In addition, it is often difficult to ensure the complete fit of the seal ring and the sealing groove after installation, further increasing the risk of seal failure.

[0005] Therefore, there is an urgent need for a flexible installation device for the spring energy storage seal ring of the piston body to solve the above problems in the prior art. Summary of the Invention

[0006] The utility model provides a flexible installation device for a spring energy storage seal ring of a piston body, which solves the problem of the lack of special equipment during the installation of the spring energy storage seal ring of the current piston body.

[0007] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A flexible installation device for a spring energy storage seal ring of a piston body, characterized in that the device includes a flexible tentacle type installation device, an outer conical sleeve rod, and a sleeve type shaping device;

[0009] The flexible tentacle - type mounting device includes a handle part and a rubber flexible tentacle part. The handle part is of a cylindrical structure. On one side of the handle part, a number of rubber tentacles are arranged at equal intervals along its outer circumference. The rubber tentacles extend horizontally, and a rigid pushing member is embedded inside the end thereof.

[0010] The outer conical sleeve rod includes a conical guiding part and a positioning flange. The outer diameter of the conical guiding part gradually increases from one end to the other end. The positioning flange is arranged at the larger - outer - diameter end of the conical guiding part. The outer conical sleeve rod is fixed to the piston body by inserting its positioning flange into the inner hole of the piston body.

[0011] The sleeve - type shape - adjusting device includes a sleeve main body. The inner diameter of the sleeve main body matches the outer diameter of the piston body. Conical guiding parts are arranged at both open ends of the sleeve main body.

[0012] Furthermore, annular grooves are arranged on the outer surface of the several rubber tentacles along the circumferential direction, and fastening spiral springs are arranged in the annular grooves.

[0013] Furthermore, the number of the rubber tentacles is four to eight.

[0014] Furthermore, the number of the rubber tentacles is six.

[0015] Furthermore, the rigid pushing member is of a U - shaped structure or a flat - plate structure made of a metal material.

[0016] Furthermore, an anti - slip grip sleeve is arranged on the surface of the handle part.

[0017] Furthermore, the cone angle range of the conical guiding part is 15 - 30°.

[0018] Furthermore, the positioning flange of the outer conical sleeve rod and the inner hole of the piston body are fixed by a threaded or snap - fit structure.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The utility model provides a flexible installation device for a spring energy storage sealing ring specifically used for a piston body. By adopting a flexible tentacle type installation device, an outer conical sleeve rod, and a sleeve type shaping device, the reliability and efficiency of the sealing ring during installation are significantly improved; the flexible tentacle type installation device, through the design of a handle part and multiple rubber flexible tentacles, ensures that the sealing ring is subjected to uniform pressure during installation, preventing problems such as scratches and deformation. The outer conical sleeve rod, through the design of an outer diameter that gradually increases in the conical guiding part, ensures that the sealing ring can be smoothly guided into the sealing groove of the piston body, and at the same time, the positioning flange ensures the stability during installation, avoiding displacement or sliding; the sleeve type shaping device, through a hollow cylinder structure and a conical guiding part that match the outer diameter of the piston body, provides an accurate shaping function, ensuring the designed shape of the sealing ring and its tight fit with the sealing groove.

[0021] Of course, when implementing the various technical solutions of the present utility model, it is not necessarily required to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of the spring energy storage sealing ring of the present utility model;

[0024] Figure 2 is a cross-sectional view of the flexible tentacle type installation device in an embodiment of the present utility model;

[0025] Figure 3 is a cross-sectional view of the outer conical sleeve rod in an embodiment of the present utility model;

[0026] Figure 4 is a schematic diagram of the process of installing the spring energy storage sealing ring in an embodiment of the present utility model;

[0027] Figure 5 is a cross-sectional view of the sleeve type shaping device in an embodiment of the present utility model;

[0028] Figure 6 is a schematic diagram of the process of the shaping operation in an embodiment of the present utility model;

[0029] Figure 7 is a schematic diagram of the completion of the installation of the spring energy storage sealing ring in an embodiment of the present utility model;

[0030] In the figure,

[0031] 1 - Spring energy storage sealing ring, 101 - High-precision jacket, 102 - Spring;

[0032] 2 - Tentacle-type installation device, 201 - Handle part, 202 - Rubber flexible tentacle part, 203 - Rigid pusher, 204 - Fastening spiral spring;

[0033] 3 - Outer conical sleeve rod, 301 - Conical guiding part, 302 - Positioning flange;

[0034] 4 - Sleeve-type shape adjustment device, 401 - Sleeve body, 402 - Conical guiding part;

[0035] 7 - Piston body. Detailed implementation mode

[0036] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0037] In the description of this patent, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this patent.

[0038] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.

[0039] See Figure 1, the spring energy storage seal ring 1 involved in the present utility model has a structure including a high-precision jacket 101 and a spring 102 arranged inside the high-precision jacket 101; the high-precision jacket 101 is of a toroidal structure, made of special polytetrafluoroethylene (PTFE) material, with a V-shaped cross-section, and has an open inner cavity for accommodating the spring 102 body. On both sides of the upper edge of the open inner cavity, there are spring body limit clamping platforms for preventing the spring 102 from coming out during the installation and use of the seal ring; the spring 102 is a toroid, and its cross-section is also V-shaped, ensuring that the spring 102 maintains an appropriate pre-tightening force in the jacket and providing a lasting elastic sealing performance for the spring energy storage seal ring.

[0040] The present utility model uses a flexible tentacle-type installation device to install the pre-treated spring energy storage seal ring in the sealing groove of the piston body without damage.

[0041] The following will specifically describe the present utility model with reference to the accompanying drawings and specific embodiments.

[0042] Embodiment:

[0043] This embodiment relates to a flexible installation device for the spring energy storage seal ring of a piston body. The spring energy storage seal ring of the piston body, that is, installing the spring energy storage seal ring in the circumferential sealing groove on the outer surface of the piston body. It should be noted that the piston body mentioned in the present utility model generally includes not only traditional pistons and piston shafts, but also components used for reciprocating or rotary motion in different mechanical systems, as well as other columnar or shaft-like components that require sealing treatment; there are sealing grooves for accommodating the seal ring on the outer surfaces of these components to ensure effective sealing during the motion process. In the case of using traditional installation techniques, the spring energy storage seal ring needs to be stretched to be installed in the sealing groove on the outer surface of the piston body. Therefore, such spring energy storage seal rings are usually also called shaft seals.

[0044] A semi-closed sealing groove is provided on the outer surface of the piston body in this embodiment. The flexible installation spring energy storage seal ring is installed in the sealing groove. The flexible installation device for the spring energy storage seal ring of the piston body mainly includes a flexible tentacle-type installation device 2, an outer conical sleeve rod 3, and a sleeve-type shaping device 4.

[0045] As Figure 2As shown, in this embodiment, the flexible tentacle - type installation device 2 includes a handle part 201 and a rubber flexible tentacle part 202. The handle part 201 is of a cylindrical structure. The rubber flexible tentacle part 202 includes six rubber flexible tentacles. These rubber flexible tentacles are arranged at equal intervals along the outer periphery of the handle part 201, extend horizontally, and a rigid pushing member 203 is embedded inside the ends of the rubber flexible tentacles. In this embodiment, the rigid pushing member 203 is of a U - shaped structure, which is a rigid structure made of metal material. The six rubber flexible tentacles can evenly apply pressure during the installation process of the spring - energy - storage sealing ring 1, ensuring that the spring - energy - storage sealing ring 1 maintains its shape when sliding into the sealing groove and will not be damaged. In order to prevent the six rubber flexible tentacles from being overly dispersed when applying pressure and to enhance their convergence, annular grooves are provided on the outer surfaces of the six rubber flexible tentacles, and a fastening spiral spring 204 is embedded in the annular grooves of the six rubber flexible tentacles, so as to ensure that during the installation process of the spring - energy - storage sealing ring 1, the rubber flexible tentacles can apply force evenly and avoid dispersion.

[0046] See Figure 3 , the outer - cone sleeve rod 3 is a key component for guiding the spring - energy - storage sealing ring into the sealing groove, including a conical guiding part 301 and a positioning flange 302. The outer diameter of the conical guiding part 301 gradually increases from the front end to the rear end, which helps the smooth guiding and accurate positioning of the spring - energy - storage sealing ring 1. The positioning flange 302 is arranged at the center of one end with a larger outer diameter of the conical guiding part 301. The outer - cone sleeve rod 3 is fixed to the piston body 7 by inserting its positioning flange 302 into the inner hole of the piston body 7, avoiding displacement or sliding during the installation process of the spring - energy - storage sealing ring 1.

[0047] See Figure 5 , the sleeve - type shaping device 4 is used for orthopedic adjustment after the installation of the sealing ring to ensure the tight fit between the spring - energy - storage sealing ring 1 and the sealing groove, so as to achieve the best sealing effect. The sleeve - type shaping device 4 includes a sleeve main body 401. The sleeve main body 401 is of a hollow cylindrical structure, and its inner diameter matches the outer diameter of the piston body 7 to ensure the matching during the shaping process. Tapered guiding parts 402 are provided at both open ends of the sleeve main body 401, and the taper range is 15 - 30°. The tapered guiding parts 402 are used to guide the piston body 7 with the spring - energy - storage sealing ring 1 initially installed into the sleeve main body 401, so as to apply uniform shaping pressure to the spring - energy - storage sealing ring 1, make it accurately fit in the sealing groove, and adjust its (especially the spring 102's) effective form. In addition, anti - slip textures can be set on the surface of the sleeve main body as needed, so that the operator can better control the device during the orthopedic adjustment process, preventing sliding and deviation.

[0048] The following introduces the flexible installation process of the spring - energy - storage sealing ring flexible installation device of the piston body in this embodiment:

[0049] S1: Preparation of Related Tools before Installation

[0050] Prepare the flexible tentacle - type installation device 2, the outer conical sleeve rod 3, and the sleeve - type shape - adjustment device 4.

[0051] S2: Installation of Fixed Piston Body and Preparation of Lubricant

[0052] Refer to Figure 6 , fix one end (the left end in the figure) of the piston body 7 on the side wall of the workbench to ensure the stability of the installation process; meanwhile, prepare an appropriate amount of lubricant to ensure that the spring - energy - storage sealing ring 1 slides smoothly when guiding into the sealing groove and prevent damage to the surface of the spring - energy - storage sealing ring 1.

[0053] S3: Inspection before Assembly

[0054] Check the assembly drawings, verify whether the dimensions, specifications, and quantities of the assembled parts are consistent with the assembly list. After ensuring that there are no errors, clean the workbench, remove temporarily useless parts and sundries, and keep the workbench clean.

[0055] S4: Installation of the Outer Conical Sleeve Rod

[0056] Evenly apply lubricant to the outer side of the outer conical sleeve rod 3 to ensure that the lubricant evenly covers the entire surface of the conical guiding part 301 of the outer conical sleeve rod 3; install the lubricant - coated outer conical sleeve rod 3 on the piston body 7. Specifically, the positioning flange 302 of the outer conical sleeve rod 3 is inserted into the central hole of the piston body 7 and is tightly fixed to the piston body 7 through the positioning flange 302 to prevent the outer conical sleeve rod 3 from shifting or sliding during the subsequent installation process. After the installation of the outer conical sleeve rod 3 is completed, its conical guiding part 301 is in close contact with the insertion end of the piston body 7, and the guiding direction of the conical guiding part 301 faces the installation direction of the spring - energy - storage sealing ring 1 to ensure that the spring - energy - storage sealing ring 1 can smoothly slide into the sealing groove.

[0057] S5: Pretreatment of the Spring - Energy - Storage Sealing Ring

[0058] Place the spring - energy - storage sealing ring 1 on the heating plate and slowly heat it to 50°C to 100°C. The specific heating temperature should be determined according to the flash point of the lubricant used, ensuring that the heating temperature is always lower than the flash point of the lubricant to prevent potential safety hazards. During the heating process, heat all parts of the spring - energy - storage sealing ring 1 evenly to ensure that it is uniformly heated as a whole. After heating is completed, immediately immerse the spring - energy - storage sealing ring 1 in the prepared lubricant and gently turn the spring - energy - storage sealing ring 1 to ensure that its surface is evenly covered with a layer of lubricant. This step can effectively reduce the friction of the spring - energy - storage sealing ring 1 during the subsequent installation process and provide additional surface protection to prevent surface damage caused by friction during installation.

[0059] S6: Installation of the Spring - Energy - Storage Sealing Ring

[0060] See Figure 4 , carefully slip the spring energy storage seal ring 1 that has been heated and soaked with lubricant onto the conical guiding portion 301 of the outer conical sleeve rod 3. Then, use the flexible tentacle-type installation device 2 to apply uniform and appropriate pressure (the thrust force to the left in the figure) to the spring energy storage seal ring 1, so that the ends of the six rubber flexible tentacles are in full contact with the spring energy storage seal ring 1; under the action of the thrust force, the spring energy storage seal ring 1 gradually advances along the conical guiding portion 301, from Figure 4 the position 1 in to position 2. During the advancing process, the spring energy storage seal ring 1 is uniformly expanded and stretched, and finally smoothly slides into the sealing groove of the piston body 7 to ensure its correct positioning.

[0061] After completion, let it stand for at least 2 minutes to fully stabilize the state of the spring energy storage seal ring 1.

[0062] Finally, gently pull out the flexible tentacle-type installation device 2, and disassemble the outer conical sleeve rod 3 and the piston body 7.

[0063] S7: Shaping operation

[0064] See Figure 6 , prepare the sleeve-type shaping device 4, and evenly apply lubricant to its inner surface. The sleeve-type shaping device 4 starts from the lower end ( Figure 6 the left end in ) of the spring energy storage seal ring 1 after installation, and gradually push the sleeve-type shaping device 4 into the piston body 7. During this process, ensure that the inner wall of the sleeve main body 401 of the sleeve-type shaping device 4 is in close fit with the spring energy storage seal ring 1 to ensure the correct positioning and shape adjustment of the spring energy storage seal ring 1; after the sleeve-type shaping device 4 is in place, let it stand for more than 2 minutes. After the shape of the spring energy storage seal ring 1 is fully stabilized, gently push it forward to remove the sleeve-type shaping device 4 to complete the shaping operation of the spring energy storage seal ring 1.

[0065] S8: Inspection and assembly

[0066] See Figure 7 , carefully check the assembly position of the spring energy storage seal ring 1 to ensure that it is correctly located in the sealing groove of the piston body 7 and is in close fit with the sealing groove. After confirmation, quickly assemble the piston body and the piston cylinder (or the plug sleeve) together to prevent the spring energy storage seal ring 1 from returning to its original state after orthopedic adjustment, resulting in difficult installation or poor sealing effect.

[0067] So far, the installation process of the spring energy storage seal ring in this embodiment is successfully completed.

[0068] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A flexible installation device for a spring energy storage seal ring of a piston body, characterized in that: The device comprises a flexible tentacle-type installation device, an outer cone sleeve rod and a sleeve-type shape adjustment device; The flexible tentacle-type mounting device comprises a handle portion and a rubber flexible tentacle portion, wherein the handle portion is a cylindrical structure, and a plurality of rubber tentacles are arranged at equal intervals along the outer circumference of one side of the handle portion, and the rubber tentacles extend horizontally, and a rigid pusher is embedded in the inner part of the end thereof; The outer tapered sleeve rod comprises a tapered guide portion and a positioning flange, the outer diameter of the tapered guide portion gradually increases from one end to the other end, the positioning flange is arranged at the end with the larger outer diameter of the tapered guide portion, and the outer tapered sleeve rod is inserted into the inner hole of the piston body through its positioning flange and fixed to the piston body; The sleeve type shape adjustment device comprises a sleeve body, the inner diameter of the sleeve body matches the outer diameter of the piston body, and both end openings of the sleeve body are provided with tapered guide parts.

2. The spring energy storage seal ring flexible installation device of the piston body according to claim 1 is characterized in that: The outer surfaces of the plurality of rubber tentacles are provided with annular grooves along the circumferential direction, and a tightening coil spring is arranged in the annular groove.

3. The spring energy storage seal ring flexible installation device of the piston body according to claim 1 is characterized in that: The number of the rubber tentacles is four to eight.

4. The spring energy storage seal ring flexible installation device of the piston body according to claim 3 is characterized in that: The rubber tentacles are provided with six pieces.

5. The spring energy storage seal ring flexible installation device of the piston body according to claim 1 is characterized in that: The rigid pushing member is a U-shaped structure or a flat plate structure made of metal material.

6. The spring energy storage seal ring flexible installation device of the piston body according to claim 1 is characterized in that: The surface of the handle is provided with an anti-slip grip sleeve.

7. The spring energy storage seal ring flexible installation device of the piston body according to claim 1 is characterized in that: The cone angle of the conical guide portion ranges from 15 to 30 degrees.

8. The spring energy storage seal ring flexible installation device of the piston body according to claim 1 is characterized in that: The positioning flange of the outer cone sleeve rod is fixed to the inner hole of the piston body through a thread or a buckle structure.

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