CN209095155U - A double-eccentric automatic figure-8 plane grinding device for large-diameter gate valve gate - Google Patents

Abstract

The new model belongs to a plane grinding device, in particular to a double-eccentric automatic figure-8 plane grinding device for a gate plate of a large-diameter gate valve. A double eccentric automatic figure-8 plane grinding device for large-diameter gate valve gate plate, including electric grinding machine, plane supporting grinding plate, gate plate, grinding sand, eccentric grinding plate, eccentric grinding rod, and the plane supporting grinding plate is arranged in the On the electric grinder, the gate plate and grinding sand are arranged on the plane supporting grinding plate, the eccentric grinding plate is arranged on the grinding sand, and the eccentric grinding rod is arranged on the eccentric grinding plate. The effect of the new model is: the principle of the small 8-figure grinding method has two remarkable characteristics: 1. The formed labyrinth seal track; 2. Due to the eccentric rotation of the grinding plate around the axis and the rotation, the grinding sand of the grinding plate is always in the Evenly distributed grinding, while improving the life of grinding sand. These two points effectively control the flatness of the gate valve gate and reduce the leakage rate of the valve, which is very suitable for grinding large-diameter gate valve gates.

Description

A double-eccentric automatic figure-8 plane grinding device for large-diameter gate valve gate

technical field

The new model belongs to a plane grinding device, in particular to a double-eccentric automatic figure-8 plane grinding device for a gate plate of a large-diameter gate valve.

Background technique

The existing center rotating plane grinding technology of the gate belongs to the circular grinding. First, its trajectory is a regular concentric circle. Microscopically, the quality of the sealing surface is mainly affected by the value of the wave crest and the degree of surface deviation. When the two sealing surfaces apply pressure, the wave crest is compressed and deformed to form capillary pores. When water molecules pass through the microscopic labyrinth channels, they increase the resistance to movement and thus act as a seal, but this is not the best way to grind. First, the more complex the labyrinth channel is under the sealing surface of unit width, the better the sealing effect is; secondly, the grinding sand of the grinding plate is always ground in the same position, and after a long time of use, grooves will appear, which is not conducive to grinding.

Utility model content

Aiming at the defects of the prior art, the new model provides a double-eccentric automatic figure-8 plane grinding device for the gate plate of a large-diameter gate valve.

The new technical scheme is: a double eccentric automatic figure 8 plane grinding device for the gate plate of a large-diameter gate valve, comprising an electric grinding machine, a plane supporting grinding plate, a gate plate, grinding sand, an eccentric grinding plate, and an eccentric grinding rod. The plane support grinding plate is set on the electric grinding machine, the gate plate and the grinding sand are set on the plane supporting grinding plate, the eccentric grinding plate is set on the grinding sand, and the eccentric grinding rod is set on the eccentric grinding plate.

The above-mentioned double eccentric automatic figure-8 plane grinding device for the gate plate of a large-diameter gate valve, wherein an eccentric distance rotating hole is arranged in the center of the eccentric grinding plate.

The above-mentioned double eccentric automatic figure-8 plane grinding device for the gate plate of a large-diameter gate valve, wherein the eccentric grinding rod is a grinding rod with an eccentric distance.

The effect of this new type is: using the principle of the small 8-figure grinding method has two notable features: 1. The labyrinth seal track as shown in Figure 6 is formed; 2. Due to the eccentric rotation and rotation of the grinding plate, the grinding sand Has been in uniform grinding, while improving the life of grinding sand. These two points effectively control the flatness of the gate valve gate, reduce the leakage rate of the valve, and are very suitable for grinding large-diameter gate valve gates.

Description of drawings

Figure 1 is a diagram of the double eccentric grinding transmission system

Figure 2 is a schematic diagram of the double eccentric grinding rotation and rotation traces.

FIG. 3 is a 3D schematic diagram of the eccentric grinding rod structure.

FIG. 4 is a 3D schematic diagram of the assembling and grinding relationship of the figure-8 automatic grinding device.

FIG. 5 is a schematic side view of the mechanism of FIG. 4 .

Figure 6 is a schematic diagram of the trajectory of the sealing surface of the figure-8 automatic grinding.

FIG. 7 is a partial enlarged schematic view of FIG. 1 .

In the picture: 1. Electric grinder, 2. Planar support grinding plate, 3. Gate plate, 4. Grinding sand, 5. Eccentric grinding plate, 6. Eccentric grinding rod, A, eccentric distance of rod, B, eccentricity of plate distance, c, rotation trace, d, rotation trace.

Detailed ways

As shown in Figure 1, a double eccentric automatic figure-8 plane grinding device for large-diameter gate valve gate mainly includes an electric grinder 1, a plane supporting grinding plate 2, a gate plate 3, grinding sand 4, an eccentric grinding plate 5, an eccentric Grinding rod 6.

Machining a rotating hole with an eccentric distance in the center of the grinding plate;

Machining of rotary axes with eccentric distances.

The component (clearance fit) is installed on the electric grinder, and the eccentric grinding rod is rotated at a low speed by the rotating shaft of the electric grinder at a low speed of 30-60r/min. With the centrifugal force, the grinding plate starts to generate rotation at the same time to form a rotation trajectory, and the rotation and revolution grinding trajectory is more complicated, which effectively improves the sealing performance of the gate.

The above-mentioned specific embodiments are used to explain this patent, rather than to limit this patent. Any modification and change made to this patent within the protection scope of the spirit and claims of this patent shall fall into the protection scope of this patent.

Claims (2)

1. a kind of double eccentric automatic 8 word flat grinding devices of heavy-caliber gate valve flashboard, it is characterised in that: including motor-driven mill (1), planar support nog plate (2), flashboard (3), abrasive sand (4), eccentric abrasive sheet (5), eccentric milling bar (6), the plane It supports nog plate (2) to be arranged on motor-driven mill (1), flashboard (3) and abrasive sand (4) is set on planar support nog plate (2), Eccentric abrasive sheet (5) is set in abrasive sand (4), eccentric milling bar (6) is set on eccentric abrasive sheet (5)；

The eccentric milling bar (6) is the milling bar with eccentric distance.

2. a kind of double eccentric automatic 8 word flat grinding devices of heavy-caliber gate valve flashboard as described in claim 1, feature exist In: at eccentric abrasive sheet (5) center, eccentric distance rotating hole is set.