Valve rod sealing sleeve and dismounting tool

Abstract

The utility model relates to a valve rod sealing sleeve and a disassembling tool in the technical field of engines, the valve rod sealing sleeve comprises a sleeve body, two or more holes are formed in the outer side of the sleeve body, the center lines of the holes are perpendicular to the axis of the sleeve body, and the two or more holes are arranged around the axis of the sleeve body at intervals; the removal tool includes: a rod; one end of each supporting arm is connected with one end of the rod, the other end of each supporting arm extends in the direction away from the rod and forms a cylinder matched with the hole, and the multiple supporting arms are arranged around the center line of the rod at intervals; the baffle plate is fixed on the rod and is arranged far away from the support arm; the hammer is slidably connected to the rod in the length direction of the rod, the hammer is located on the side, facing the supporting arm, of the baffle, and a limiting part used for making contact with the baffle in a colliding mode is formed on the hammer. According to the valve rod sealing sleeve and the disassembling tool, the valve rod sealing sleeve can be disassembled more conveniently in a labor-saving mode, and damage to a valve guide pipe is effectively reduced or even avoided.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to a valve stem sealing sleeve and a disassembly tool. Background Art

[0002] The engine's valve stem seal and valve guide are interference fit, and the disassembly space is limited. When removing the valve stem seal, it is necessary to use pliers or pliers to clamp the valve stem seal and remove it. Not only is it difficult to remove, but it is also time-consuming and labor-intensive. In addition, because the wall of the valve guide is generally thin, the valve guide clamp is likely to be deformed or even broken when removing the valve stem seal using the above method, causing engine failure. Utility Model Content

[0003] In view of the problems existing in the background technology, the present application provides a valve stem sealing sleeve and a disassembly tool, which can make the disassembly of the valve stem sealing sleeve more convenient and labor-saving, and effectively reduce or even avoid damage to the valve guide.

[0004] According to one aspect of the present invention, a valve stem sealing sleeve is provided, comprising a sleeve body, wherein two or more holes are formed on the outer side of the sleeve body, the center lines of the holes are perpendicular to the axis of the sleeve body, and the two or more holes are arranged at intervals around the axis of the sleeve body.

[0005] In some embodiments of the present invention, the hole is a through hole or a blind hole.

[0006] In some embodiments of the present invention, the hole is opened on the side wall of the sleeve body.

[0007] In some embodiments of the present invention, a protrusion is provided on the outer surface of the sleeve body, and the hole is opened on the protrusion.

[0008] In some embodiments of the present invention, the hole is a circular hole or a regular polygonal hole.

[0009] According to another aspect of the present invention, a disassembly tool for use with the above-mentioned valve stem sealing sleeve is provided, comprising: a rod; a plurality of arms, one end of the arm being connected to one end of the rod, the other end of the arm extending away from the rod and forming a column adapted to the hole, the plurality of arms being arranged at intervals around the center line of the rod; a baffle, the baffle being fixed to the rod, the baffle being arranged away from the arm; a hammer, the hammer being slidably connected to the rod along the length direction of the rod, the hammer being located on the side of the baffle facing the arm, the hammer being formed with a limiting portion for colliding with the baffle.

[0010] In some embodiments of the present invention, two support arms are connected to the rod, and the two support arms are arranged opposite to each other.

[0011] In some embodiments of the present invention, at least one bolt is passed through the two support arms, and a nut is connected to the end of the bolt.

[0012] In some embodiments of the present invention, an elastic member is sandwiched between the two supporting arms.

[0013] In some embodiments of the present invention, the elastic member is a spring, and the spring is sleeved on the bolt.

[0014] An embodiment of the present application provides a valve stem sealing sleeve and a disassembly tool, which forms a hole with a center line perpendicular to the axis of the sleeve body on the outside of the sleeve body of the valve stem sealing sleeve, and arranges two or more holes at intervals around the axis of the sleeve body, and uses a disassembly tool including a rod, multiple arms, a baffle and a hammer. The column on the arm is inserted into the hole, and the hammer is quickly slid from one side of the arm to the side of the baffle so that the hammer hits the baffle, so that the arm can apply a force to the valve stem sealing sleeve in a direction away from the valve guide with the help of the snap-fit ​​cooperation between the column and the hole. The valve stem sealing sleeve and the valve guide can be separated from each other through one or multiple cycles of action, avoiding the need to clamp and disassemble the valve stem sealing sleeve, making the disassembly of the valve stem sealing sleeve more convenient and labor-saving, and effectively reducing or even avoiding damage to the valve guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the valve stem sealing sleeve of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the disassembly tool of the utility model.

[0018] The reference numerals in the accompanying drawings represent the following: 1. sleeve body; 11. hole; 2. rod; 3. baffle; 4. hammer; 5. bolt; 6. nut; 7. elastic member; 8. column; 9. support arm. DETAILED DESCRIPTION

[0019] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0021] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0022] Valve stem seals, also called valve oil seals, are installed on the valve guides and form an interference fit with them. Their primary function is to prevent oil from entering the valve guides and, subsequently, the combustion chamber, causing oil burning and other malfunctions.

[0023] Since the valve stem seal sleeve and the valve guide are interference fit and the disassembly space is limited, when removing the valve stem seal sleeve, it is necessary to clamp the valve stem seal sleeve with pliers or pliers and remove it. This is not only difficult to remove, time-consuming and labor-intensive, but also easy to deform or even break the valve guide clamp.

[0024] Based on this, the present application provides a valve stem sealing sleeve and a disassembly tool, so as to facilitate and quickly disassemble the valve stem sealing sleeve and improve the protection of the valve guide.

[0025] The embodiment of the present application discloses a valve stem sealing sleeve. Figure 1 As shown, the valve stem sealing sleeve includes a sleeve body 1 , and two or more holes 11 are formed on the outer side of the sleeve body 1 . The center lines of the holes 11 are perpendicular to the axis of the sleeve body 1 , and the two or more holes 11 are arranged at intervals around the axis of the sleeve body 1 .

[0026] By using the valve stem sealing sleeve in the present technical solution, a hole 11 with a center line perpendicular to the axis of the sleeve body 1 is formed on the outside of the sleeve body 1, and two or more holes 11 are arranged at intervals around the axis of the sleeve body 1. A tool can be inserted into the hole 11, and force is applied to the tool to act on the sleeve body 1. The direction of the force is opposite to the installation direction of the sleeve body 1 on the valve guide, so that the sleeve body 1 can be gradually withdrawn from the valve guide. The setting of the hole 11 can avoid the need to clamp and disassemble the valve stem sealing sleeve, making the removal of the valve stem sealing sleeve more convenient and labor-saving, and can effectively reduce or even avoid damage to the valve guide.

[0027] In some embodiments of the present invention, Figure 1 As shown, the hole 11 is a through hole or a blind hole.

[0028] It should be understood that, whether a through hole or a blind hole is used, the hole 11 should have a certain depth to ensure that the tool can be inserted into the hole 11 more stably, and when a force is applied to the hole 11 by the tool, the tool is not easily detached from the hole 11.

[0029] In some embodiments of the present invention, Figure 1 As shown, the hole 11 is opened on the side wall of the sleeve body 1.

[0030] In other embodiments, a protrusion (not shown) may be further provided on the outer surface of the sleeve body 1 , and the hole 11 is opened on the protrusion to reduce the impact on the structure of the sleeve body 1 .

[0031] In addition, the protrusion can be integrally formed with the sleeve body 1 or fixed by welding. The protrusion can be a ring-shaped structure or a plurality of unit structures evenly distributed around the axis of the sleeve body 1.

[0032] It should be noted that the depth and position of the hole 11 on the sleeve body 1 can be reasonably designed according to the thickness of the side wall in different axial areas of the sleeve body 1, which not only facilitates the removal of the sleeve body 1 from the valve guide but also ensures the performance of the sleeve body 1.

[0033] In some embodiments of the present invention, Figure 1 As shown, the shape of the hole 11 includes but is not limited to a circle or a regular polygon, wherein the regular polygon is, for example, an equilateral triangle, a square or a regular hexagon.

[0034] The shape of the hole 11 is preferably circular, which can reduce restrictions on the tool and better fit the tool.

[0035] In some embodiments of the present invention, two or more holes 11 are arranged at equal intervals around the axis of the sleeve body 1 .

[0036] Preferably, if Figure 1As shown, two holes 11 are provided on the sleeve body 1 , and the two holes 11 are symmetrically arranged on the sleeve body 1 .

[0037] By inserting a tool into the two symmetrical holes 11 and applying the same force in the two holes 11, the sleeve body 1 can be effectively prevented from deflecting, so that the valve guide is subjected to more uniform force during the withdrawal of the sleeve body 1, further improving the protection of the valve guide.

[0038] This embodiment also provides a disassembly tool, which is used in conjunction with the valve stem sealing sleeve. Figure 2 As shown, the disassembly tool comprises a rod 2 , a plurality of arms 9 , a baffle 3 and a hammer 4 .

[0039] One end of the arm 9 is connected to one end of the rod 2 , and the other end of the arm 9 extends away from the rod 2 and forms a column 8 adapted to the hole 11 . Multiple arms 9 are arranged at intervals around the center line of the rod 2 .

[0040] The baffle 3 is fixed on the rod 2 , and the baffle 3 is arranged away from the support arm 9 .

[0041] The hammer 4 is slidably connected to the rod 2 along the length direction of the rod 2 . The hammer 4 is located on the side of the baffle 3 facing the support arm 9 . A limiting portion for colliding with the baffle 3 is formed on the hammer 4 .

[0042] By using the disassembly tool in the present technical solution, the column 8 on the support arm 9 is inserted into the hole 11, and the hammer 4 is quickly slid from one side of the support arm 9 to the side of the baffle 3, so that the hammer 4 hits the baffle 3, so that the support arm 9 can exert a force on the valve stem sealing sleeve in the direction away from the valve guide by virtue of the snap-fitting of the column 8 and the hole 11. The valve stem sealing sleeve and the valve guide can be separated from each other through one action or multiple cycles, which is convenient, fast, and saves time and effort.

[0043] In some embodiments of the present invention, the number of the arms 9 may be equal to or less than the number of the holes 11 , and the columns 8 on the multiple arms 9 may correspond to some or all of the holes 11 .

[0044] In some embodiments of the present invention, Figure 2 As shown, two support arms 9 are connected to the rod 2, and the two support arms 9 are arranged opposite to each other.

[0045] The sleeve body 1 can be disassembled by matching the columns 8 on the two supporting arms 9 arranged opposite to each other with the two holes 11 arranged opposite to each other on the sleeve body 1. The withdrawal process of the sleeve body 1 is stable and the operation is convenient.

[0046] In some embodiments of the present invention, Figure 2 As shown, at least one bolt 5 is passed through the two support arms 9 , and a nut 6 is connected to the end of the bolt 5 .

[0047] After the two arms 9 clamp the sleeve body 1 and the column 8 on the arm 9 is aligned with the hole 11, the two arms 9 can be brought closer to each other by tightening the nut 6 until the two columns 8 are fully inserted into the two holes 11. The bolt 5 and nut 6 can adjust and lock the relative distance between the two arms 9, which can not only enhance the clamping stability of the column 8 and the hole 11, but also increase the applicability of the disassembly tool.

[0048] In some embodiments of the present invention, Figure 2 As shown, an elastic member 7 is sandwiched between the two supporting arms 9 .

[0049] When the nut 6 is loosened, the two arms 9 can be naturally expanded by the rebound of the elastic member 7, so that the column 8 and the hole 11 are automatically separated, which makes it convenient to release the valve stem sealing sleeve removed from the valve guide. Then the two expanded arms 9 can also be easily positioned on the valve stem sealing sleeve on other valve guides, thereby improving the convenience of operation.

[0050] Furthermore, the elastic member 7 may be a spring. Preferably, the spring is sleeved on the bolt 5, and the screw rod of the bolt 5 can play a positioning and guiding role for the spring.

[0051] In some embodiments of the present invention, Figure 2 As shown, the hammer 4 is a cylindrical structure, which is sleeved on the rod 2 and slidably connected to the rod 2.

[0052] It should be noted that the wall thickness and material of the hammer 4 can be reasonably selected according to the magnitude of the force applied by the disassembly tool to the valve stem sealing sleeve. For example, the material of the hammer 4 can be selected from metals such as stainless steel and copper.

[0053] Furthermore, the surface of the hammer 4 may be provided with anti-slip grooves to improve operability.

[0054] In some embodiments of the present invention, Figure 2 As shown, the rod 2 can be a round rod or a square rod, etc., preferably a round rod, and the inner through hole of the hammer 4 is adapted to the rod 2.

[0055] In some embodiments of the present invention, Figure 2 As shown, the baffle 3 is a circular plate with a diameter larger than that of the rod 2 . The baffle 3 is coaxially fixed to the end of the rod 2 . The hammer 4 is directed toward the end of the baffle 3 to form a limiting portion that collides with the baffle 3 .

[0056] In some embodiments of the present invention, Figure 2 As shown, the support arm 9 is a long plate-like structure, and the support arm 9 can be detachably connected to the rod 2 by screws.

[0057] In some embodiments of the present invention, Figure 2 As shown, the column 8 can be formed by a round rod detachably connected to the support arm 9 to facilitate replacement and maintenance.

[0058] Furthermore, one end of the column 8 facing the hole 11 may be provided with an oblique angle or a rounded corner for guidance, so as to facilitate the insertion of the column 8 into the hole 11 .

[0059] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A valve stem sealing sleeve, characterized in that: The invention comprises a sleeve body, wherein two or more holes are formed on the outer side of the sleeve body, the center lines of the holes are perpendicular to the axis of the sleeve body, and the two or more holes are arranged at intervals around the axis of the sleeve body.

2. The valve stem sealing sleeve according to claim 1, characterized in that: The hole is a through hole or a blind hole.

3. The valve stem sealing sleeve according to claim 1, characterized in that: The hole is opened on the side wall of the sleeve body.

4. The valve stem sealing sleeve according to claim 1, characterized in that: A protrusion is provided on the outer surface of the sleeve body, and the hole is opened on the protrusion.

5. The valve stem sealing sleeve according to claim 1, characterized in that: The hole is a circular hole or a regular polygonal hole.

6. A disassembly tool used in conjunction with the valve stem sealing sleeve according to any one of claims 1 to 5, characterized in that: include: rod; a plurality of arms, one end of each arm being connected to one end of the rod, the other end of each arm extending away from the rod and forming a column adapted to fit the hole, the plurality of arms being spaced apart around a center line of the rod; a baffle, the baffle being fixed on the rod and arranged away from the support arm; A hammer is slidably connected to the rod along the length direction of the rod, the hammer is located on a side of the baffle facing the support arm, and a limiting portion is formed on the hammer for colliding with the baffle.

7. The disassembly tool according to claim 6, characterized in that: There are two support arms connected to the rod, and the two support arms are arranged opposite to each other.

8. The disassembly tool according to claim 7, characterized in that: At least one bolt is passed through the two support arms, and a nut is connected to the end of the bolt.

9. The disassembly tool according to claim 8, characterized in that: An elastic piece is sandwiched between the two supporting arms.

10. The disassembly tool according to claim 9, characterized in that: The elastic member is a spring, and the spring is sleeved on the bolt.

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