Valve port knife

Abstract

The utility model provides a valve port knife which comprises a knife handle part and a knife edge part arranged at one end of the knife handle part, the knife handle part and the knife edge part are integrally formed, a plurality of cutting parts are arranged on the knife edge part, concave parts which are concave towards the inside of the knife handle part are arranged among the cutting parts, and a first inclined surface, a second inclined surface and a third inclined surface are arranged on the knife edge part. The gradients of the first inclined surface, the second inclined surface and the third inclined surface are sequentially increased; the cutter handle part is in a curved surface shape, and the cutting part is in a plane shape. The cutting edge part and the cutter handle part are integrally formed, the cutting edge part is structurally matched with a gas valve port, the concave part which is concave towards the interior of the cutter handle part is arranged between the cutting parts, and the cutting edge part is provided with the first inclined surface, the second inclined surface and the third inclined surface of which the gradients are sequentially increased, so that repairing requirements of different depths and different types can be effectively met; and the plane design of the cutting part ensures the flatness and precision when the sealing surface of the valve is ground, so that the machining precision is high, and a gas valve port does not leak gas.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing gas valves, in particular to a valve opening knife. Background Art

[0002] A valve cutter is a professional tool used for valve repair and reprocessing. It is mainly used to repair scratches, wear or other damage on the valve sealing surface to restore the valve's sealing performance. In the gas system, the valve is a key component used to control the flow of gas, and its sealing is crucial. If the valve sealing surface is damaged due to long-term use, it may cause gas leakage, which may easily cause safety hazards. At this time, a valve cutter is needed to reprocess the valve sealing surface: the existing valve cutter has a simple blade structure, a single cutting shape, and low processing accuracy, which may easily cause gas valve leakage, causing safety hazards. Utility Model Content

[0003] The purpose of the utility model is to provide a valve port knife, in which a blade portion and a shank portion are integrally formed, the blade portion structure is adapted to the gas valve port, a recessed portion recessed toward the inside of the shank portion is provided between the cutting portions, a first inclined surface, a second inclined surface, and a third inclined surface with successively increasing inclinations are provided on the blade portion, and the utility model can effectively adapt to repair requirements of different depths and different types, and the plane design of the cutting portion ensures the flatness and precision when grinding the valve sealing surface, so that the utility model has high processing precision and the gas valve port does not leak.

[0004] Based on this, the utility model provides a valve mouth knife, including a handle portion and a blade portion arranged at one end of the handle portion, the handle portion and the blade portion are integrally formed, the blade portion is provided with a plurality of cutting portions, a recessed portion recessed toward the inside of the handle portion is provided between the cutting portions, the blade portion is provided with a first inclined surface, a second inclined surface, and a third inclined surface, the inclinations of the first inclined surface, the second inclined surface, and the third inclined surface increase successively; the handle portion is a curved surface, and the cutting portion is a planar surface.

[0005] As described above, the valve port knife, the cutting part also includes a first cutting part, a second cutting part, and a third cutting part. The first cutting part corresponds to the first bevel, the second cutting part corresponds to the second bevel, and the third cutting part corresponds to the third bevel.

[0006] In the valve cutter as described above, the recessed portion is rounded, and includes a first recessed portion and a second recessed portion, wherein the first recessed portion is arranged between the first cutting portion and the second cutting portion, and the second recessed portion is arranged between the second cutting portion and the third cutting portion.

[0007] In the valve cutter as described above, the third cutting part is further provided with a first processing part, the first cutting part is further provided with a second processing part, the first processing part and the third cutting part are integrally formed, and the second processing part and the first cutting part are integrally formed.

[0008] In the valve port knife as described above, the extension line of the first bevel on the outer periphery of the blade portion is a straight line, and the extension lines of the second bevel and the third bevel on the outer periphery of the blade portion are curved lines.

[0009] In the valve cutter as described above, the first bevel extends toward the cutting portion to form a first cutting surface, the second bevel extends toward the cutting portion to form a second cutting surface, and the third bevel extends toward the cutting portion to form a third cutting surface.

[0010] In the valve cutter as described above, the first cutting surface, the second cutting surface and the third cutting surface are planes.

[0011] In the valve port knife as described above, the knife handle is cylindrical.

[0012] For the valve cutter as described above, the straight-line distance between the first cutting portion and the third cutting portion is p, and the straight-line distance between the first cutting portion and the second cutting portion is d.

[0013] In the valve port knife as described above, the rounded angles of the first recessed portion and the second recessed portion are 60 degrees.

[0014] Implementing the embodiments of the utility model has the following beneficial effects:

[0015] 1. The handle and blade of the utility model are integrally formed, which ensures the structural stability between the handle and blade, is easy to manufacture, reduces assembly errors, and improves the overall strength and durability of the utility model. The structure is adapted to the gas valve port, and the design of multiple cutting parts allows the valve port knife to adapt to valve sealing surfaces of different sizes and shapes, increasing the versatility and flexibility of the valve port knife. The inclinations of the first, second, and third bevels on the blade increase successively. This design provides cutting capabilities at different angles, adapts to cutting requirements of different depths and types, and enhances the flexibility and efficiency of the valve port knife; the planar design of the cutting part ensures the flatness and precision when grinding the valve sealing surface, which helps to achieve high-quality sealing surface repair.

[0016] 2. The cutting part and the bevel surface correspond to each other. This design enables the cutting part and the bevel surface to work more effectively in coordination, thereby improving the control accuracy of the machining process and the quality of the sealing surface repair.

[0017] 3. The recessed portion is rounded. This design reduces stress concentration, improves the durability of the utility model, and makes the utility model smoother and easier to clean. The extension line of the first bevel on the outer periphery of the blade portion is a straight line, and the extension lines of the second and third bevels on the outer periphery of the blade portion are curved lines. This design of straight and curved extension lines provides different cutting characteristics. The straight extension line provides a stable cutting path, while the curved extension line allows for more complex cutting shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 The utility model is a top view Figure 2 . DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model discloses a valve knife, comprising a handle portion 1 and a blade portion 2 arranged at one end of the handle portion 1, wherein the handle portion 1 and the blade portion 2 are integrally formed, and a plurality of cutting portions 20 are arranged on the blade portion 2, and a recessed portion 24 recessed toward the inside of the handle portion 1 is arranged between the cutting portions 20, and a first inclined surface 21, a second inclined surface 22, and a third inclined surface 23 are arranged on the blade portion 2, and the inclinations of the first inclined surface 21, the second inclined surface 22, and the third inclined surface 23 increase successively; the handle portion 1 is a curved surface, and the cutting portion 20 is a flat surface. Specifically, precision casting or forging technology can be used to realize the integral forming of the handle portion 1 and the blade portion 2, to ensure that there is no gap in the connecting part, and to improve the overall structural stability. The handle portion 1 and the blade portion 2 can be made of high-strength alloy steel or cemented carbide material to ensure sufficient hardness and wear resistance to meet the requirements of various working conditions. The inclinations of the first inclined surface 21, the second inclined surface 22, and the third inclined surface 23 increase successively, such as Figure 1 and Figure 2 As shown, the first bevel 21, the second bevel 22, and the third bevel 23 are arranged between the handle portion 1 and the blade portion 2. The handle portion 1 is curved, and the cutting portion 20 is flat, that is, the first bevel 21, the second bevel 22, and the third bevel 23 gradually transition the curved surface of the handle portion 1 to the flat surface of the cutting portion 20. This design not only provides cutting capabilities at different angles and adapts to cutting requirements of different depths and types, but also ensures the flatness and accuracy of the cutting portion 20 when grinding the valve sealing surface, thereby achieving high-quality sealing surface repair; the cutting portion 20 can be designed to be conical, V-shaped, U-shaped, or other geometric shapes suitable for the shape of the valve sealing surface to adapt to the maintenance requirements of different valves. The cutting portion 20 of the utility model is preferably a conical structure, and the recessed portion 24 between the cutting portions 20 serves as a chip removal groove to help guide metal chips and abrasives generated during the grinding process to avoid their accumulation on the valve sealing surface.

[0024] The handle and blade of the utility model are integrally formed, which ensures the structural stability between the handle and blade, facilitates manufacturing, reduces assembly errors, and improves the overall strength and durability of the utility model. The structure is adapted to the gas valve port, and the design of multiple cutting parts allows the valve port knife to adapt to valve sealing surfaces of different sizes and shapes, increasing the versatility and flexibility of the valve port knife. The inclinations of the first, second, and third bevels on the blade increase successively. This design provides cutting capabilities at different angles, adapts to cutting requirements of different depths and types, and enhances the flexibility and efficiency of the valve port knife; the planar design of the cutting part ensures the flatness and precision when grinding the valve sealing surface, which helps to achieve high-quality sealing surface repair.

[0025] Furthermore, the cutting portion 20 further includes a first cutting portion 201, a second cutting portion 202, and a third cutting portion 203. The first cutting portion 201 corresponds to the first inclined surface 21, the second cutting portion 202 corresponds to the second inclined surface 22, and the third cutting portion 203 corresponds to the third inclined surface 23. Figure 1 and Figure 2 As shown, the cutting portion and the bevel surface correspond to each other. This design allows the cutting portion and the bevel surface to work more effectively in coordination, thereby improving the control accuracy of the machining process and the quality of the sealing surface repair.

[0026] Further, the recessed portion 24 is rounded, and includes a first recessed portion 241 and a second recessed portion 242. The first recessed portion 241 is disposed between the first cutting portion 201 and the second cutting portion 202, and the second recessed portion 242 is disposed between the second cutting portion 202 and the third cutting portion 203. Specifically, the recessed portion is rounded, and this design reduces stress concentration, improves the durability of the utility model, and makes the utility model smoother and easier to clean.

[0027] Furthermore, the third cutting portion 203 is further provided with a first processing portion 2030, the first cutting portion 201 is further provided with a second processing portion 2010, the first processing portion 2030 and the third cutting portion 203 are integrally formed, and the second processing portion 2010 and the first cutting portion 201 are integrally formed. Figure 1 As shown, the first processing portion 2030 is located at the lower end of the third cutting portion 203, and the second processing portion 2010 is located at the upper end of the third cutting portion 201. In the utility model, the first processing portion and the second processing portion are preferably designed for specific valve maintenance tasks, such as repairing local damage on the valve sealing surface or performing fine surface treatment. The processing portion is preferably designed to be a shape matching the cutting portion, such as round, square or other shapes suitable for the valve sealing surface, so as to achieve precise local processing.

[0028] Further, the extension line of the first bevel 21 on the outer periphery of the blade portion 2 is a straight line, and the extension lines of the second bevel 22 and the third bevel 23 on the outer periphery of the blade portion 2 are curved lines. Specifically, the extension line of the first bevel 21 on the outer periphery of the blade portion 2 is a straight line, and the extension lines of the second bevel 22 and the third bevel 23 on the outer periphery of the blade portion 2 are curved lines. This design of the extension lines of the straight line and the curve provides different cutting characteristics. The extension line of the straight line provides a stable cutting path, while the extension line of the curve allows a more complex cutting shape.

[0029] Further, the first inclined surface 21 extends toward the cutting portion 20 to form a first cutting surface 211, the second inclined surface 22 extends toward the cutting portion 20 to form a second cutting surface 221, and the third inclined surface 23 extends toward the cutting portion 20 to form a third cutting surface 231. Specifically, Figure 1 As shown, the first bevel 21, the second bevel 22, and the third bevel 23 all extend to the cutting portion 20 to form corresponding cutting surfaces, namely, a first cutting surface 211, a second cutting surface 221, and a third cutting surface 231, which are used to contact and grind the valve sealing surface; the transition area between the bevel and the cutting surface is smooth and has no sharp angles to avoid damage to the valve sealing surface during the grinding process.

[0030] Furthermore, the first cutting surface 211, the second cutting surface 221, and the third cutting surface 231 are planes. Specifically, the cutting surfaces are planes, which can ensure that a stable and consistent cutting effect can be provided during the grinding process.

[0031] Furthermore, the handle 1 is cylindrical. Specifically, the curved surface design of the handle 1 is ergonomic, provides a better grip and operating comfort, and is suitable for long-term maintenance operations.

[0032] Further, the straight-line distance between the first cutting portion 201 and the third cutting portion 203 is p, and the straight-line distance between the first cutting portion 201 and the second cutting portion 202 is d. Figure 3 As shown, the straight-line distance p between the first cutting portion 201 and the third cutting portion 203 is 60 mm, and the straight-line distance d between the first cutting portion 201 and the second cutting portion 202 is 30 mm. Through precise size and angle control, the valve mouth knife can more accurately control the cutting process, reduce errors, and improve the success rate of valve sealing surface repair, so that the valve mouth does not leak.

[0033] Furthermore, the fillet angles of the first recessed portion 241 and the second recessed portion 242 are 60 degrees. Figure 3 As shown, through precise size and angle control, the valve port knife can more accurately control the cutting process, reduce errors, and improve the success rate of valve sealing surface repair, so that the valve port does not leak.

[0034] The handle and blade of the utility model are integrally formed, which ensures the structural stability between the handle and blade, facilitates manufacturing, reduces assembly errors, and improves the overall strength and durability of the utility model. The structure is adapted to the gas valve port, and the design of multiple cutting parts allows the valve port knife to adapt to valve sealing surfaces of different sizes and shapes, increasing the versatility and flexibility of the valve port knife. The inclinations of the first, second, and third bevels on the blade increase successively. This design provides cutting capabilities at different angles, adapts to cutting requirements of different depths and types, and enhances the flexibility and efficiency of the valve port knife; the planar design of the cutting part ensures the flatness and precision when grinding the valve sealing surface, which helps to achieve high-quality sealing surface repair.

[0035] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.

[0036] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A valve cutter, characterized in that: The invention comprises a handle portion (1) and a blade portion (2) arranged at one end of the handle portion (1), wherein the handle portion (1) and the blade portion (2) are integrally formed, a plurality of cutting portions (20) are arranged on the blade portion (2), recessed portions (24) recessed toward the inside of the handle portion (1) are arranged between the cutting portions (20), and a first inclined surface (21), a second inclined surface (22), and a third inclined surface (23) are arranged on the blade portion (2), wherein the inclinations of the first inclined surface (21), the second inclined surface (22), and the third inclined surface (23) increase in sequence; the handle portion (1) is in the shape of a curved surface, and the cutting portion (20) is in the shape of a plane.

2. A valve port knife according to claim 1, characterized in that: The cutting portion (20) further comprises a first cutting portion (201), a second cutting portion (202), and a third cutting portion (203); the first cutting portion (201) corresponds to the first inclined surface (21), the second cutting portion (202) corresponds to the second inclined surface (22), and the third cutting portion (203) corresponds to the third inclined surface (23).

3. A valve port knife according to claim 2, characterized in that: The recessed portion (24) is rounded, and comprises a first recessed portion (241) and a second recessed portion (242), wherein the first recessed portion (241) is arranged between the first cutting portion (201) and the second cutting portion (202), and the second recessed portion (242) is arranged between the second cutting portion (202) and the third cutting portion (203).

4. A valve port knife according to claim 3, characterized in that: The third cutting portion (203) is also provided with a first processing portion (2030), the first cutting portion (201) is also provided with a second processing portion (2010), the first processing portion (2030) and the third cutting portion (203) are integrally formed, and the second processing portion (2010) and the first cutting portion (201) are integrally formed.

5. A valve port knife according to claim 4, characterized in that: The extension line of the first inclined surface (21) on the outer periphery of the blade portion (2) is a straight line, and the extension lines of the second inclined surface (22) and the third inclined surface (23) on the outer periphery of the blade portion (2) are curved lines.

6. A valve port knife according to claim 5, characterized in that: The first inclined surface (21) extends toward the cutting portion (20) to form a first cutting surface (211), the second inclined surface (22) extends toward the cutting portion (20) to form a second cutting surface (221), and the third inclined surface (23) extends toward the cutting portion (20) to form a third cutting surface (231).

7. A valve port knife according to claim 6, characterized in that: The first cutting surface (211), the second cutting surface (221), and the third cutting surface (231) are planes.

8. The valve port knife according to claim 1, characterized in that: The handle part (1) is cylindrical.

9. A valve port knife according to claim 2, characterized in that: The straight-line distance between the first cutting portion (201) and the third cutting portion (203) is p, and the straight-line distance between the first cutting portion (201) and the second cutting portion (202) is d.

10. The valve port knife according to claim 3, characterized in that: The rounded angles of the first recessed portion (241) and the second recessed portion (242) are 60 degrees.

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