CN217668709U - Manual grinding device for valve sealing surface - Google Patents
Manual grinding device for valve sealing surface Download PDFInfo
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- CN217668709U CN217668709U CN202221375537.2U CN202221375537U CN217668709U CN 217668709 U CN217668709 U CN 217668709U CN 202221375537 U CN202221375537 U CN 202221375537U CN 217668709 U CN217668709 U CN 217668709U
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- valve
- upright post
- sand paper
- abrasive paper
- post screw
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The valve sealing surface manual grinding device is characterized in that an upright post screw is fixedly connected with a handle; the upright post screw penetrates through the sand paper sticking plate and the sand paper pressing plate, a positioning nut is arranged on the sand paper sticking plate on the upright post screw, and a locking nut is arranged below the sand paper pressing plate on the upright post screw and the grinding sand paper; and the abrasive paper is adhered between the abrasive paper adhering plate and the abrasive paper pressing plate. By using the device, the surface smoothness of the sealing surface of the valve can reach 0.4um by a manual grinding technology, and the sealing requirements of a high-pressure DN100-DN500 stop valve and a gate valve with the sealing pressure below 10MPa can be met.
Description
Technical Field
The utility model belongs to the machining tool that polishes relates to a valve seal face manual grinding device.
Background
The valve is a precision mechanical part and requires a smooth surface. However, in the use process, the defects such as gaps and the like are easily generated due to abrasion.
With the rapid development of economy, valves in many industries such as metallurgy, mining, chemical engineering, building materials and the like can be maintained on line only under a plurality of conditions in order to meet the requirement of fast-paced production because the valves are not disassembled and taken off a production line for maintenance. For example, the sealing surfaces of the shut-off valves and gate valves of DN100-DN500 are damaged, and therefore, the technical support provided by the high-quality and high-efficiency valve maintenance technology is urgently needed to meet the requirements of the production process.
When sealing surfaces such as DN100-DN500 stop valves and gate valves are damaged, the existing on-line repair technology carries out surfacing welding on the sealing surfaces, and because the production field lacks of machining conditions, the surfacing welded sealing surfaces have to be polished by an angle grinder. The method is rough, the precision and the surface roughness of the processed sealing surface are very poor, the sealing requirement of the valve cannot be ensured, and the requirement of the production process is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sealed face grinder of manual valve through carrying out the precision grinding to sealed face, solves above-mentioned prior art well and has the weak point.
The technical scheme of the utility model:
valve sealing face manual grinder, its characterized in that: the upright post screw rod is fixedly connected with the handle; the upright post screw penetrates through the sand paper sticking plate and the sand paper pressing plate, a positioning nut is arranged on the sand paper sticking plate on the upright post screw, and a locking nut is arranged below the sand paper pressing plate on the upright post screw and the grinding sand paper; and abrasive paper is stuck between the abrasive paper sticking plate and the abrasive paper pressing plate.
The technical effects of the utility model: because the device is used and the grinding materials are coarse to fine, the surface smoothness of the sealing surface of the valve can reach 0.4um by the manual grinding technology, and the sealing requirements of a high-pressure DN100-DN500 stop valve and a gate valve with the sealing pressure of less than 10MPa can be met.
Drawings
FIG. 1 is a schematic view of a grinding device for a sealing surface of a manual valve.
FIG. 2 is a diagram showing the state of the polishing device for the sealing surface of the manual valve.
In the figure: 1. the valve comprises a handle, 2 parts of a stand column screw rod, 3 parts of a positioning nut, 4 parts of a sand paper sticking plate, 5 parts of grinding sand paper, 6 parts of a sand paper pressing plate, 7 parts of a locking nut, 8 parts of a valve body and 9 parts of a circular sealing surface of the valve.
Detailed Description
The following further describes the embodiments with reference to the drawings.
FIG. 1 shows: the manual grinding device for the sealing surface of the valve is characterized in that an upright post screw rod 2 is fixedly connected with a handle 1; the upright post screw rod 2 passes through the sand paper sticking plate 4 and the sand paper pressing plate 6, a positioning nut 3 is arranged on the sand paper sticking plate on the upright post screw rod 2, and a locking nut is arranged below the sand paper pressing plate on the upright post screw rod; the abrasive paper 5 is stuck between the abrasive paper sticking plate 4 and the abrasive paper pressing plate.
FIG. 2 shows: when the positioning nut is used, the position of the positioning nut 3 is well adjusted according to the depth of the sealing surface of the valve and the flange surface of the valve body; the sandpaper sticking plate 4, the abrasive paper 5, and the sandpaper pressing plate 6 are locked by the lock nut 7, and the abrasive paper 5 is covered on the roughly processed valve sealing surface. The manual valve sealing surface grinding device is placed in the valve body 8, and the handle 1 is held by hands manually to do forward and reverse motion, so that the circular sealing surface 9 of the valve can be ground to improve the surface smoothness.
According to the sealing pressure standard of the valve, the specification of the used sand paper and grinding paste is determined by comparing the surface finish sample plate, and the sand paper and the grinding paste are repeatedly ground to meet the technical requirements of the process. By using the device, the surface smoothness of the sealing surface of the valve can reach 0.4um by a manual grinding technology, and the sealing requirements of a high-pressure DN100-DN500 stop valve and a gate valve with the sealing pressure below 10MPa can be met.
Claims (1)
1. Valve sealing face manual grinder, its characterized in that: the upright post screw rod is fixedly connected with the handle; the upright post screw penetrates through the abrasive paper sticking plate and the abrasive paper pressing plate, a positioning nut is arranged on the abrasive paper sticking plate on the upright post screw, and a locking nut is arranged below the abrasive paper pressing plate on the upright post screw; and the abrasive paper is adhered between the abrasive paper adhering plate and the abrasive paper pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221375537.2U CN217668709U (en) | 2022-06-04 | 2022-06-04 | Manual grinding device for valve sealing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221375537.2U CN217668709U (en) | 2022-06-04 | 2022-06-04 | Manual grinding device for valve sealing surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217668709U true CN217668709U (en) | 2022-10-28 |
Family
ID=83705679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221375537.2U Active CN217668709U (en) | 2022-06-04 | 2022-06-04 | Manual grinding device for valve sealing surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217668709U (en) |
-
2022
- 2022-06-04 CN CN202221375537.2U patent/CN217668709U/en active Active
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