Cutter for repairing leakage of valve port

Abstract

The utility model discloses a cutter for repairing leakage of a valve port, which relates to the technical field of valve leakage repairing, solves the problem of leakage caused by deformation of the valve port of a valve, and comprises a main body part, a hemispherical cutter head part is arranged at the front end of the main body part, and a grinding surface is arranged on at least part of the spherical surface of the cutter head part. The diameter of the tool bit part is larger than the caliber of a valve port of a valve, and a handle is arranged at the rear end of the body part. In the utility model, the cutter is vertically aligned with the valve port of the valve, the cutter head part at the front end of the main body part is designed to be semispherical, extrusion force is applied to extrude the valve port, then the valve port is rotated for two to three circles under micro pressure, the cutter head part always extrudes the valve port during rotation, and the grinding surface on the spherical surface of the cutter head part can grind off burrs and tiny deformation parts of the valve port. The valve port is shaped and repaired, so that the roundness of the valve port is higher, the valve port can be better tightly connected with a pipeline, and after the tool is used for repairing, the leakage rate of the valve port can be controlled to be below 2 ml / min.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve leakage repair technical field, especially a cutter that valve port leakage repairs. BACKGROUND

[0002] Valves are control components in fluid conveying systems, with functions of stopping, regulating, guiding, preventing backflow, stabilizing pressure, dividing or overflow pressure relief. Valves for fluid control systems, from the simplest stop valve to the most complex self-control system used in various valves, have quite a variety of types and specifications.

[0003] At present, the inner side of the valve port of the valve will produce burrs due to machining reasons or use reasons, and serious deformation will occur. The shape of the normal valve port is circular, the shape of the deformed valve port may become oval, and the inner side of the valve port produces burrs, which will cause a small gap between the valve port and the pipeline, and the valve will leak during use. The leakage is usually greater than or equal to 15ml / min. In order to achieve higher sealing, the leakage of the valve is required to be controlled below 15ml / min. At present, there is no good method to repair the valve port of the valve at low cost to control the leakage of the valve port. SUMMARY

[0004] The utility model discloses a kind of cutters that valve port leakage repairs, solve the problem of the leakage phenomenon of the valve port due to deformation.

[0005] The technical scheme of the utility model for achieving the above-mentioned purpose is a kind of cutter that valve port leakage repairs, including main part, the front end of the main part has the cutter head portion of hemispherical shape, at least part of the spherical surface of the cutter head portion is provided with abrasive surface, the abrasive surface is rough surface, the diameter of the cutter head portion is greater than the caliber of the valve port of valve, the rear end of the main part is provided with handle.

[0006] As an embodiment, the entire spherical surface of the cutter head portion is abrasive surface.

[0007] As an embodiment, at least one abrasive surface is provided on the spherical surface of the cutter head portion, the abrasive surface is rectangular, and the abrasive surface extends from the center of the spherical surface to the position close to the main part.

[0008] Preferably, a plurality of abrasive surfaces are provided on the spherical surface of the cutter head portion, and the plurality of abrasive surfaces are uniformly distributed in the circumferential direction of the cutter head portion.

[0009] Preferably, the other parts of the spherical surface of the cutter head portion except the abrasive surface are smooth surface

[0010] Further, the abrasive surface is provided with a chip removal groove.

[0011] As one implementation, the main body has a through hole at one end away from the blade head, which is perpendicular to the axis of the main body, and the handle is inserted into the through hole.

[0012] In one embodiment, the handle is provided with a threaded sleeve, the inner side of the threaded sleeve has an internal thread, and the end of the main body away from the blade head has an external thread. The threaded sleeve is threadedly connected to the main body through the cooperation of the internal thread and the external thread.

[0013] In one embodiment, the end of the main body away from the blade head has a threaded hole, and a screw is provided on the handle. The handle is perpendicular to the main body, and the handle and the main body are fixed together by connecting the screw to the threaded hole.

[0014] Its advantages over existing technologies are:

[0015] In this invention, by holding the handle and aligning the cutter vertically with the valve port, the blade head at the front end of the main body is designed to be hemispherical. Applying pressure causes the blade head to press against the valve port, and then rotating it slightly two to three times. While rotating, the blade head continues to press against the valve port. The grinding surface on the spherical surface of the blade head grinds away the burrs and minor deformations of the valve port, reshaping and repairing it. This results in a higher roundness of the valve port, allowing for a better and tighter connection with the pipeline, effectively reducing the gap between the valve port and the pipeline, and thus improving the valve port's sealing performance. After repair with this cutter, the leakage rate of the valve port can be controlled below 2ml / min. The operation is simple, the repair cost is lower, and it effectively improves product quality and controls valve port leakage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the tool used for repairing valve port leakage in Example 1;

[0017] Figure 2 This is a schematic diagram of the main body and the head of the cutting tool in Embodiment 1;

[0018] Figure 3 This is a schematic diagram of the cutting head of the tool in Example 2;

[0019] Figure 4 This is a schematic diagram of the cutting head of the tool in Example 3;

[0020] Figure 5 This is a schematic diagram of the cutting head of the tool in Example 4;

[0021] Figure 6 This is a schematic diagram of the mounting structure of the main body and handle of the tool in Embodiment 5;

[0022] Figure 7 Fig. 1 is a schematic view of the mounting structure of the main body part and the handle of the cutter in Example 6.

[0023] In the figure, 1 is a main body part; 101 is a through hole; 2 is a cutter head part; 201 is a grinding surface; 2011 is a chip removal groove; 3 is a handle; 31 is a threaded sleeve; and 4 is a screw. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Example 1

[0026] As shown in the figure, a preferred embodiment of the utility model puts forward a cutter for repairing valve port leakage, which mainly comprises the following three parts: a main body part 1, a cutter head part 2 and a handle 3. The main body part 1 is the blade of the cutter, and the cutter head part 2 is the cutting edge of the cutter. The handle 3 is installed at the end of the main body part 1 away from the cutter head part 2, so as to hold the cutter. Figure 1 In the embodiment, the main body part 1 and the cutter head part 2 are integrally formed, and the shape of the cutter head part 2 is hemispherical, which is located at the front end of the main body part 1. The main body part 1 is a cylinder, and the diameter is consistent with the diameter of the cutter head part 2. The main body part 1 and the cutter head part 2 are both made of hard alloy, and have strong rigidity.

[0027] Figure 2 The diameter of the cutter head part 2 is generally larger than the diameter of the valve port of the valve, so that the cutter head part 2 will not pass through the valve port.

[0028] As shown in the figure, in order to perform slight machining repair on the valve port of the valve, a rectangular grinding surface 201 is arranged on the spherical surface of the cutter head part 2 in the embodiment. The grinding surface 201 is a rough arc surface. The grinding surface 201 extends from the center of the spherical surface to the position close to the main body part 1. The other parts of the spherical surface except the grinding surface 201 are smooth surfaces, so as to reduce the friction contact area between the cutter head part 2 and the valve port and reduce the friction force, so as to manually operate the cutter and rotate.

[0029] The above grinding surface can be formed by plating or machining. Figure 2

[0030] The above grinding surface can be formed by plating or machining.

[0031] ​​When the valve port is repaired, the user holds the handle 3, presses the cutter head 2 against the valve port, and slightly extrudes the cutter head 2 inward. The cutter head 2 is rotated for 2-3 circles. In the process of rotation, the grinding surface 201 grinds the valve port for one circle, grinds off the excess burrs and slightly deformed parts, and rounds the valve port, so that the valve port becomes a perfect circle, the roundness of the valve port is higher, the valve port can be better connected with the pipeline, the gap between the valve port and the pipeline is smaller, and the sealing between the valve port and the pipeline is improved. The leakage of the valve port can be controlled below 2ml / min by the cutter.

[0032] When the cutter is operated, the cutter needs to be vertically aligned with the valve port, and the cutter is slightly extruded and rotated for 2-3 circles. The extrusion direction is consistent with the axial direction of the main body 1.

[0033] Since the shape of the cutter head 2 is hemispherical, the cutter can be slightly inclined, but the force direction is slightly offset relative to the axial direction of the main body 1.

[0034] As shown in Figure 1 , Figure 2 , in order to facilitate the installation of the handle 3, a through hole 101 is formed at the end of the main body 1 away from the cutter head 2. The through hole 101 penetrates front and back, and is perpendicular to the axial direction of the main body 1. The handle 3 is a rod member, which penetrates the through hole 101. When the valve port is repaired, the user holds and rotates the handle 3 to drive the cutter to rotate. The handle 3 can better apply the rotating force.

[0035] Embodiment 2

[0036] As shown in Figure 3 , the difference between the present embodiment and embodiment 1 is that there is more than one grinding surface 201 on the spherical surface of the cutter head 2, which can be two, three or four. The grinding surfaces 201 can be uniformly distributed along the circumferential direction of the spherical surface. When the valve port is ground, the number of rotation of the cutter can be reduced, and the friction force is not increased much. The other parts of the spherical surface are still smooth surfaces.

[0037] Embodiment 3

[0038] As shown in Figure 4 , the difference between the present embodiment and embodiment 1 is that the grinding surface 201 is no longer part of the spherical surface of the cutter head 2, but the entire spherical surface of the cutter head 2 is the grinding surface 201. The spherical surface no longer has a smooth surface. The area of the grinding surface 201 is larger, and the effect is the same. Only the friction force is larger when rotating.

[0039] Embodiment 4

[0040] As shown in Figure 5As shown in the figure, the difference between the embodiment and the embodiment 1-3 is that a chip removal groove 2011 is further formed on the grinding surface 201 in the embodiment, and the grinding chips on the valve port can fall into the chip removal groove 2011 to be discharged, preventing the grinding chips from interfering with the grinding of the tool head 2.

[0041] Embodiment 5

[0042] As Figure 6 shown in the figure, the difference between the embodiment and the embodiment 1 is that the mounting mode of the handle 3 is different. In the embodiment, a threaded hole is formed on the end of the main body 1 away from the tool head 2, and the handle 3 is perpendicular to the main body 1 and is screwed with the threaded hole on the main body 1 through the screw 4, so as to fix the handle 3 on the main body 1.

[0043] Embodiment 6

[0044] As Figure 7 shown in the figure, the mounting mode of the handle 3 in the embodiment is different from that in the embodiment 1 and the embodiment 4. In the embodiment, a threaded sleeve 31 is arranged at the middle part of the handle 3, the inner side of the threaded sleeve 31 has internal threads, and the end of the main body 1 away from the tool head 2 is machined with external threads matched with the internal threads, the threaded sleeve 31 is screwed with the main body 1, so as to fix the handle 3 with the main body 1.

[0045] The above technical solution only reflects the preferred technical solution of the technical scheme of the utility model, and some changes made by the person skilled in the art to some parts of the utility model all reflect the principle of the utility model and are within the protection scope of the utility model.

Claims

1. A knife for valve port leakage repair, characterized in that, The utility model provides a valve grinding tool, which comprises a main body (1), wherein the front end of the main body (1) is provided with a cutter head (2) in the shape of a hemisphere, at least part of the spherical surface of the cutter head (2) is provided with an abrasive surface (201), the abrasive surface (201) is a rough surface, the diameter of the cutter head (2) is greater than the caliber of the valve port of a valve, and the rear end of the main body (1) is provided with a handle (3).

2. The knife for valve port leakage repair according to claim 1, characterized in that, The entire spherical surface of the cutter head (2) is an abrasive surface (201).

3. The knife for valve port leakage repair according to claim 1, characterized in that, The spherical surface of the cutter head (2) is provided with at least one abrasive surface (201), the abrasive surface (201) is in the shape of a rectangle, and the abrasive surface (201) extends from the center of the spherical surface to a position close to the main body (1).

4. The knife for valve port leakage repair according to claim 3, characterized in that, The spherical surface of the cutter head (2) is provided with a plurality of abrasive surfaces (201), and the plurality of abrasive surfaces (201) are uniformly distributed in the circumferential direction of the cutter head (2).

5. The knife for valve port leakage repair according to claim 4, characterized in that, The spherical surface of the cutter head (2) is provided with a plurality of abrasive surfaces (201), and the plurality of abrasive surfaces (201) are uniformly distributed in the circumferential direction of the cutter head (2).

6. The knife for valve port leakage repair according to claim 2 or 4, characterized in that, The spherical surface of the cutter head (2) is provided with a plurality of abrasive surfaces (201), and the plurality of abrasive surfaces (201) are uniformly distributed in the circumferential direction of the cutter head (2).

7. The knife for valve port leakage repair according to claim 1, characterized in that, The abrasive surface (201) is provided with a chip removal groove (2011).

8. The knife for valve port leakage repair according to claim 1, characterized in that, The end of the main body (1) away from the cutter head (2) is provided with a through hole (101) penetrating through and perpendicular to the axial direction of the main body (1), and the handle (3) is connected with the through hole (101) in a penetrating manner.

9. The knife for valve port leakage repair according to claim 1, characterized in that, The handle (3) is provided with a threaded sleeve (31), the inner side of the threaded sleeve (31) is provided with internal threads, the end of the main body (1) away from the cutter head (2) is provided with external threads, and the threaded sleeve (31) is threadedly connected with the main body (1) through cooperation of the internal threads and the external threads. The end of the main body (1) away from the cutter head (2) is provided with a threaded hole, the handle (3) is provided with a screw (4), the handle (3) is perpendicular to the main body (1) and is fixed with the main body (1) through connection of the screw (4) and the threaded hole.

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