A kind of relative grinding device for the combination surface of boiler steam soot blower valve core and valve bottom

Abstract

A kind of relative grinding device for the joint surface of valve core and valve bottom of boiler steam soot blower.The boiler steam soot blower works in high temperature and high pressure environment for a long time, frequently act, it is extremely easy to cause valve core, valve bottom wear, cause the internal leakage phenomenon of soot blower.The utility model discloses a valve core fixer and grinding fixer, the grinding fixer is fixed between valve core fixer and soot blower poppet, grinding handle is welded on valve core fixer and longer than the valve core fixer, the inner ring of valve core fixer is in line contact with valve core bottom.The utility model is used for the relative grinding of the joint surface of valve core and valve bottom of boiler steam soot blower.

Description

Technical Field

[0001] This utility model relates to a grinding device, and more particularly to a grinding device for the mating surfaces of the valve core and valve bottom of a boiler steam soot blower. Background Technology

[0002] Boiler steam soot blowers are mainly used to remove ash and slag buildup on boiler heating surfaces, keeping them clean, reducing flue gas heat loss, and improving boiler heat transfer efficiency. Ash buildup on heating surfaces can cause the tube wall temperature of superheaters and reheaters to rise, increasing the risk of tube rupture. Cleaning the heating surfaces with soot blowers can effectively reduce this risk and ensure the safe operation of the boiler. Regular cleaning with soot blowers can reduce ash buildup on heating surfaces and play a certain auxiliary role in improving low-temperature corrosion of the heating surfaces.

[0003] Boiler steam soot blowers operate under high temperature and high pressure for extended periods, and their frequent operation can easily cause wear on the valve core and valve bottom, leading to internal leakage in the soot blower. Utility Model Content

[0004] The purpose of this invention is to provide a device for grinding the mating surfaces of the valve core and valve bottom of a boiler steam soot blower, in order to solve the aforementioned technical problems.

[0005] The above objectives are achieved through the following technical solutions: A grinding device for grinding the mating surfaces of the valve core and valve bottom of a boiler steam soot blower, comprising a valve core holder and a grinding holder, wherein the grinding holder is fixed between the valve core holder and the soot blower lifting valve, and the grinding handle is welded to the valve core holder and is longer than the valve core holder, and the inner ring of the valve core holder is in contact with the bottom line of the valve core.

[0006] The aforementioned grinding device for the valve core and valve bottom mating surfaces of a boiler steam soot blower, wherein the valve core holder and the grinding holder are in sliding fit, and the upper limit is controlled by the inner diameter table surface of both.

[0007] The aforementioned device for grinding the mating surfaces of the valve core and valve bottom of a boiler steam soot blower has multiple protrusions inside the inner ring of the valve core retainer. Beneficial effects

[0008] 1. This utility model is easy and simple to operate, the device is portable, safe and reliable, and has good centering stability, ensuring precise grinding; it has high work efficiency, one person can complete the grinding, reducing labor intensity and saving labor costs; it improves the service life of the equipment, reduces spare parts costs, and ensures the safe and stable operation of the boiler.

[0009] 2. The grinding handle of this utility model is the power input end. One end drives the valve core retainer to rotate through the hand crank bearing, which in turn drives the valve core to rotate. The grinding retainer is fixed between the valve core retainer and the soot blower lifting valve to ensure the rotational stability between the valve core and the soot blower lifting valve mating surface during grinding. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged image; Figure 3 This is a schematic diagram of the grinding handle. Figure 4 This is a schematic diagram of the grinding fixture. Figure 5 This is a schematic diagram of the valve core retainer. Figure 6 This is a schematic diagram of the valve core structure; In the diagram: 1. Grinding handle; 2. Grinding retainer; 3. Valve core retainer; 4. Valve core; 5. Soot blower lifting valve; 6. Hand crank bearing; 7. Inner diameter table; 8. Protrusion. Detailed Implementation

[0011] Reference Figures 1-6 A grinding device for grinding the mating surfaces of the valve core and valve bottom of a boiler steam soot blower, comprising a valve core holder 3 and a grinding holder 2, wherein the grinding holder is fixed between the valve core holder and the soot blower lifting valve 5, and the grinding handle 1 is welded to the valve core holder and is longer than the valve core holder, and the inner ring of the valve core holder is in contact with the bottom line of the valve core 4.

[0012] The valve core retainer and the grinding retainer slide together, and the upper limit is controlled by the inner diameter table 7 of both.

[0013] The valve core retainer has multiple protrusions 8 inside its inner ring.

[0014] The grinding handle 1 is the power input end. A solid cylinder is installed on the operating end of the grinding handle, and a hand crank bearing is installed on it. The hand crank bearing is a deep groove ball bearing with an inner diameter of 12mm and an outer diameter of 32mm. One end drives the valve core retainer 3 to rotate through the hand crank bearing 6, which in turn drives the valve core 4 to rotate. The grinding retainer 2 is fixed between the valve core retainer 3 and the soot blower lifting valve 5 to ensure the rotational stability between the mating surfaces of the valve core 4 and the soot blower lifting valve 5 during grinding.

[0015] The gap between the outer diameter of the grinding fixture and the inner diameter of the soot blower lifting valve is 0.5mm, and the gap between the inner diameter of the grinding fixture and the outer diameter of the valve core fixture is 0.5mm. The gap is very small to ensure that the valve core does not shake after it is fixed. The valve core retainer 3 and the grinding retainer 2 can move up and down relative to each other, and the upper limit is controlled by the inner diameter platform 7 of the two, as shown in the figure. The lower part of the outer side of the valve core retainer is a convex ring surface, and the inner side of the grinding retainer is a concave ring surface. The upper limit of the valve core retainer is controlled by the inner diameter platform (0.95mm) of the two. The grinding handle is welded to the valve core retainer and is longer than the valve core retainer, and is used to control the lower limit.

[0016] The inner ring of the valve core retainer 3 is in contact with the bottom line of the valve core 4. In addition, five protrusions 8 are set inside the inner ring of the valve core retainer 3 to increase the contact area and drive the valve core to rotate.

[0017] In use, apply grinding paste to the bottom of the sootblower lifting valve 5, place the valve core 4 on the bottom of the sootblower lifting valve 5, and place the grinding device grinding fixture 2 on the sootblower lifting valve 5 with the mating surface of the boiler steam sootblower valve core and the valve bottom, and place the valve core fixture 3 on the valve core. The operator presses the grinding fixture 2 with one hand and rotates the bearing 6 on the grinding handle 1 with the other hand. Under the drive of the grinding handle 1, the valve core fixture 3 drives the valve core 4 to rotate, thus realizing the relative grinding of the valve core 4 and the mating surface of the bottom of the sootblower lifting valve 5.

Claims

1. A device for opposing the grinding of the joint between the valve body and the valve bottom of a boiler steam sootblower, characterized in that: Its components include a valve core retainer and a grinding retainer. The grinding retainer is fixed between the valve core retainer and the soot blower lifting valve. The grinding handle is welded to the valve core retainer and is longer than the valve core retainer. The inner ring of the valve core retainer is in contact with the bottom line of the valve core.

2. The grinding device for the mating surfaces of the valve core and valve bottom of a boiler steam soot blower according to claim 1, characterized in that: The valve core retainer and the grinding retainer slide together, and the upper limit is controlled by the inner diameter table surface of both.

3. The grinding device for the mating surfaces of the valve core and valve bottom of a boiler steam soot blower according to claim 2, characterized in that: The valve core retainer has multiple protrusions inside its inner ring.

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