CN209095308U - Double-eccentric bearing automatic 8-shaped plane grinding device for large-caliber gate valve flashboard - Google Patents

Abstract

The new model belongs to a plane grinding device, in particular to a double eccentric belt bearing automatic 8-figure plane grinding device for the 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 set on the plane supporting grinding plate, the eccentric grinding plate is set on the grinding sand, the eccentric grinding rod is set on the eccentric grinding plate, and the eccentric grinding rod is set on the eccentric grinding plate through the rolling bearing. The effect of the new type is: using the principle of the small 8-figure grinding method has two notable features: 1. The labyrinth sealing track is formed; 2. Due to the eccentricity of the grinding plate around the axis and the rotation, the grinding sand of the grinding plate is always in a uniform state. Cloth grinding, while improving the life of the grinding sand.

Description

Double eccentric belt bearing 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 belt bearing automatic eight-figure plane grinding device for the 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 complicated the labyrinth channel is under the sealing surface of unit width, the better the sealing effect; 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 grinding sand are set on the plane supporting grinding plate, the eccentric grinding plate is set on the grinding sand, the eccentric grinding rod is set on the eccentric grinding board, and the eccentric grinding rod is set on the eccentric through rolling bearings. 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 the new type is: the principle of the small 8-figure grinding method has two notable features: 1. The labyrinth seal track is formed; 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 a uniform state. Cloth grinding, while improving the life of the grinding sand. These two points effectively control the flatness of the gate valve gate and reduce the leakage rate of the valve. It is very suitable for the grinding of large-diameter gate valve gates. At the same time, it also increases the bearing structure and improves the service life of the grinding board.

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.

Figure 3 is a 3D schematic diagram of the eccentric grinding rod structure with rolling bearings.

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, 7. Rolling bearing, A, eccentric distance of rod, B , plate eccentricity, 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, rolling bearing 7.

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 purpose of this patent is to provide a double eccentric belt bearing automatic figure-8 plane grinding device structure for large-diameter gate valve gate. Grind. Due to the two eccentricities of the eccentric grinding plate and the eccentric grinding rod, two simultaneous movements occur. One is the eccentric movement of the grinding plate around the axis, and the other is the rotation due to centrifugal force. In this way, the original concentric circle trajectory becomes countless small 8-figure trajectories, and the 8-figure grinding method has a better sealing effect than the center rotation and linear motion grinding methods. Microscopically, the figure-8 grinding method forms a more complicated labyrinth seal, the peaks of the wave crests have better flatness, and the molecules of the medium can collide with each other in the complex labyrinth, which is like the labyrinth of the circulation hedging of the regulating valve in the macroscopic view. structure, thereby reducing pressure, reducing kinetic energy, and more effectively ensuring sealing performance. In order to improve the service life of the eccentric grinding plate and the eccentric grinding rod, rolling bearings are added to the grinding plate to reduce the direct friction between the rod and the plate.

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 double eccentric belt bearing automatic figure-8 plane grinding device of a large-diameter gate valve gate, it is characterized in that: comprise electric grinder (1), plane support grinding plate (2), gate (3), grinding sand ( 4), the eccentric grinding plate (5), the eccentric grinding rod (6), the plane supporting grinding plate (2) is arranged on the electric grinder (1), and the gate (2) is provided on the plane supporting grinding plate (2). 3) and grinding sand (4), an eccentric grinding plate (5) is set on the grinding sand (4), an eccentric grinding rod (6) is set on the eccentric grinding plate (5), and the eccentric grinding rod (6) passes through the rolling bearing (7) ) is arranged on the eccentric grinding plate (5); An eccentric distance rotating hole is arranged in the center of the eccentric grinding plate (5). 2 . The double eccentric belt bearing automatic figure-eight plane grinding device according to claim 1 , wherein the eccentric grinding rod (6) is a grinding rod with an eccentric distance. 3 .