阅读说明：本技术 一种滚动摩擦振动筛筛板 (Rolling friction vibrating screen sieve plate ) 是由 刘兴明 周志扬 孟子博 于 2019-11-27 设计创作，主要内容包括：以往的振动筛板由一平板和筛孔组成,摩擦方式主要是滑动摩擦,本发明由多个滚轮和圆柱体组成的筛孔,可自由转动,这样就形成了可转动的梯形筛孔。使筛板与物料的摩擦由滑动摩擦变为滚动摩擦,极大的提高了筛板的使用寿命、筛分效率和防堵卡功能。(The traditional vibrating sieve plate consists of a flat plate and sieve pores, the friction mode is mainly sliding friction, and the sieve pores consisting of a plurality of rollers and cylinders can freely rotate, so that rotatable trapezoidal sieve pores are formed. The friction between the sieve plate and the material is changed from sliding friction to rolling friction, so that the service life, the sieving efficiency and the blockage preventing function of the sieve plate are greatly improved.)

1. The sieve plate with the rollers can realize rolling friction.

2. A roller with thick middle and thin edge for forming trapezoidal screen holes is disclosed.

3. The roller is made of high polymer materials such as polyurethane, rubber and the like.

4. The roller is made of metal and ceramic materials.

Technical Field

The technical field of screening.

Background

In the field of industry and agriculture, the application of vibration screening is very wide, and the development has been greatly advanced. The vibrating screen plate is an indispensable key production link of material grading operation, and the vibrating screen plate is a main working part of the link.

There has been a great deal of research and improvement on screen panels for a long time. But the working conditions are severe, and the material quantity is large, such as ores, gravels and the like. The method still has the fatal defects of low efficiency and short service life.

Disclosure of Invention

In order to solve the problems, the invention provides an idea of changing the friction mode of the sieve plate so as to improve the efficiency and prolong the service life. And provides a manufacturing method for manufacturing the novel sieve plate according to the idea.

Firstly, the relative motion relation between the existing sieve plate and materials is analyzed, the materials slide from top to bottom under the dual actions of gravity and vibration and ejection force of the sieve surface, the sieve plate and the materials generate sliding friction and impact in the sliding process of the materials, and the abrasion of the sieve plate is caused by the impact and friction of the materials. How to mitigate this wear and impact.

It is known that rolling friction works much better than sliding friction, as the friction of a car tyre with the ground during braking and during normal driving are quite different. The sliding friction is changed into rolling friction by changing the contact mode of the sieve plate and the materials, and the hardness-changed impact is handled in a mode of avoiding the sieve plate, so that the abrasion of the sieve plate is greatly reduced.

How this is achieved, then, the invention is achieved by:

a600 x 600 mm sieve plate is manufactured, a rotating shaft is arranged on the sieve plate at intervals of 60 mm, a circular roller with the diameter of 50 mm and the thickness of 10 mm is manufactured, a hole with the diameter of 12 mm is formed in the middle of the roller, a cylinder with the length of 12 mm and the diameter of 25 mm is manufactured, and a hole with the diameter of 12 mm is formed in the middle of the cylinder. Wear 10 millimeters in the shaft diameter with the gyro wheel, following closely, wear into the cylinder, wear into another gyro wheel again, analogize so with this, with gyro wheel and cylinder full whole sieve face. (see figure I) a sieve pore is formed by the surrounding of the shaft, the roller and the cylinder. On this screen, every 4 rollers, two cylinders, enclosed a screen hole, the size of which was about 12 mm by 40 mm. The screen surface is covered with the screen holes. When the material to be screened falls onto the screen deck, material smaller than 12 mm falls under the screen, and material larger than 12 mm remains on the screen and slides towards the oversize material zone. Thereby realizing the grading of the materials.

In the screening process, the material flow can drive the roller and the cylinder to rotate, and the sliding friction is changed into rolling friction. If materials impact the roller and the cylinder, the roller and the cylinder can freely rotate, so that the roller and the cylinder cannot be attacked like the existing sieve plate and can be freely dodged, and the impact force is rapidly reduced. The novel sieve plate has the characteristics of reducing the impact force by rolling friction and rolling, so that the service life of the novel sieve plate is longer than that of the existing sieve plate.

The roller is also made into a shape with thick middle and thin edge to form a rotatable trapezoidal sieve pore, so that the screening efficiency of the roller is necessarily improved, and the anti-blocking performance of the roller is enhanced.

The invention has the advantages of

The invention has the characteristics of changing sliding friction into rolling friction and preventing the rotatable trapezoid sieve pores from being impacted with the smashed materials hard and the like, and has fundamental great advantages in the aspects of service life, sieving efficiency, sieve penetration rate and the like, which are partially proved in principle tests.

Furthermore, the roller and the cylinder are made of nylon with good self-lubrication, polyurethane with good wear resistance, rubber and other organic polymer materials, ceramic and metal ceramic materials, and composite materials with respective characteristics.

Example (b): sieve plate made of nylon material with 1200 mm 2400 mm thickness

Rolling friction vibration sieve plate structure:

1. a frame: the composite material is formed by compounding polyurethane and steel plates, and has the thickness of 60 mm and the width of 1200 mm 2400 mm. See FIG. 2

2. Shaft: 10 mm diameter round steel, 2400 mm long. See FIG. 2

3. Roller: nylon material, diameter 50 millimeters, thickness 10 millimeters, the circular gyro wheel of 12 millimeters of trompil. See FIG. 1.1

4. Cylinder: a cylinder with a diameter of 25 mm, a length of 12 mm and a hole of 12 mm. See FIG. 1.1

The connection mode is as follows:

the frame is formed by connecting four frames which are made of polyurethane and steel plates into a cuboid with the thickness of 1200 mm 2400 mm.

And the hooks are poured at two ends of the frame.

The shafts are connected with the screen frames at two ends of the framework with the length of 2400 mm at intervals of 60 mm.

The rollers are connected to the cylinders in sequence prior to connection.

The screen holes consisting of the rollers and the cylinders are distributed over the whole screen surface.

Thus, the vibrating screen plate mainly comprising a frame, a shaft, a roller and a cylinder is manufactured. (see FIG. 2)