CN104165516A - Material lifting device of rotary drying machine - Google Patents

Abstract

The invention relates to a lifting device of a rotary dryer. The present invention uses three different lifting plates in the rotary cylinder (1) of the rotary dryer, namely the lifting plate a (2) with a circular arc-shaped end and the lifting plate b (3) installed obliquely And the "L" shaped lifting plate (4), through a reasonable combination to reduce the falling drop of the material during the rotation in the dryer, can solve the problem of excessive crushing of the material during the drying process.

Description

A lifting device for a rotary dryer

technical field

The invention relates to a lifting device of a rotary dryer.

Background technique

Dryer is a kind of equipment commonly used in industry, mainly used in building materials, metallurgy, chemical industry, food, coal, cement industry to dry slag, limestone, coal powder, clay and other materials. The dryer is mainly composed of rotary body, lifting plate, transmission device, support device and sealing ring and other components.

The lifting device of the dryer has a great influence on the particle size and drying efficiency of the dried materials. Some drying machines currently on the market, due to the large drop of the lifting plate, the drying materials are easily broken, which affects the product quality. Therefore, if the particle size of the drying material is required to be high, it is necessary to use a lifting device that has less damage to the particle size.

Usually, most of the lifting devices in the dryer barrel are "# type", "+ type" or "刂 type". To meet both drying requirements and product particle size requirements, it is necessary to start with the lifting device, explore and create a new lifting device.

Contents of the invention

The object of the present invention is to provide a lifting device for a rotary dryer with a low crushing rate.

The technical scheme adopted in the present invention is as follows.

The lifting device of the rotary dryer consists of the rotating cylinder of the dryer, the lifting plate a with a radian at the end, the lifting plate b, the "L" shaped lifting plate and the flange ring, the central rod, the support rod and the It is composed of reinforced pipe; the lifting plate a with arc at the end is evenly arranged on the inner wall surface of the rotating cylinder of the dryer, and the end of the arc points to the direction of rotation of the cylinder; the flange ring is composed of a support rod fixed on the central rod and a fixed The reinforcing pipe on the inner wall of the dryer cylinder is fixed in the cavity of the cylinder, and the lifting plate b is evenly arranged on the flange ring; the two ends of the central rod are fixed on the inlet and outlet of the dryer, The machine rotates together; the "L"-shaped lifting plate is fixed on the center rod; the rotating cylinder of the dryer is coaxial with the flange ring and the center rod.

The height of the straight part of the front section of the lifting plate a is 1/4~1/3 of the radius of the rotating cylinder of the dryer, and forms an angle of 0°~15° with the diameter of the cylinder of the dryer, and the central angle of the arc at the end is 0 °~80°, the number of installations is 8-12.

The lifting plate b is at an angle of 0° to 45° with the diameter of the cylinder of the dryer, and the height is 1/5 to 1/4 of the cylinder radius, and the installation position of the lifting plate b is between two adjacent lifting plates. On the center line of a, the number of installations can be the same as the number of lifting plates a, or 1/2 of the number of lifting plates a.

The number of "L"-shaped lifting plates installed is 4, the length of which is 1/4~1/3 of the radius of the cylinder, and the bent end points opposite to the direction of rotation of the cylinder.

The present invention adopts reasonable combination of three different types of lifting plates. The lifting plate a is installed at an angle to the diameter of the dryer cylinder, and the end is arc-shaped, which can reduce the descending speed of the material after being lifted to a certain extent. The lifting plate b is installed at an angle to the diameter of the dryer cylinder, which also plays a role in reducing the falling speed of the material. The material raised by lifting plate a is connected by lifting plate b, and the material raised by lifting plate b is then connected by "L" shaped lifting plate. The bent end of "L" shaped lifting plate points to the drying The cylinder of the dryer rotates in the opposite direction, and the materials received by it are lowered to a certain height before being discharged. In this way, the falling drop of the material during the rotation process is reduced to the greatest extent, and the problem of material breaking caused by the large drop of the material during the falling process is greatly avoided.

Description of drawings

Fig. 1 is a layout diagram of the lifting device of the present invention in a rotary dryer.

The meanings of the numbers in the figure are as follows:

1-Dryer rotating cylinder; 2-Lifting plate a; 3-Lifting plate b; 4-"L" shaped lifting plate; 5-Flange ring; 6-Central rod; 7-Support rod; 8 - Reinforcing tube.

Detailed ways

In conjunction with accompanying drawing 1, further illustrate the lifting device of the present invention.

The lifting device of the rotary dryer consists of the rotating cylinder of the dryer (1), the lifting plate a (2) with a radian at the end, the lifting plate b (3) and the "L" shaped lifting plate (4) ) and flange ring (5), center rod (6), support rod (7) and reinforcement tube (8); wherein the lifting plate a (2) with a curved end is evenly arranged on the rotating cylinder of the dryer ( 1) on the inner wall surface, the end of the arc points to the rotation direction of the cylinder; the flange ring (5) is fixed by the support rod (7) fixed on the central rod and the reinforcing pipe (8) fixed on the inner wall of the dryer cylinder In the cavity of the cylinder, the lifting plate b (3) is evenly arranged on the flange ring (5); the two ends of the center rod (6) are fixed at the inlet and outlet ends of the dryer, and the center rod (6) It rotates with the dryer cylinder; the "L" shaped lifting plate (4) is fixed on the center rod (6); the dryer rotates the cylinder (1) with the flange ring (5) and the center rod (6) are coaxial. the

When the dryer is working, the cylinder (1) rotates. After the material to be dried is lifted to a certain height by the lifting plate a (2), the material is lifted and dropped freely by the arc end of the lifting plate a (2). The material is caught by the lifting plate b (3) below, and is lifted again. After being lifted to a certain height, it is lifted and fallen freely again, and is caught by the "L" shaped lifting plate (4) below. The direction of the bending part at the end of the plate is opposite to the rotation direction of the drying cylinder, and the materials falling into the "L"-shaped lifting plate (4) will drop to a certain height with the "L"-shaped lifting plate (4) Finally, it is sprinkled to the bottom of the dryer cylinder. The material is raised and dropped by the lifting plate a (2) to the lifting plate b (3), and then falls on the "L" shaped lifting plate (4), is caught by the "L" shaped lifting plate (4) and With the "L"-shaped lifting plate (4) falling to a certain height, it is scattered to the bottom of the dryer cylinder. This greatly reduces the lifting height of the material in the dryer barrel and avoids damage to the material during the drying process. the

Claims (4)

1. the raising material unit of a rotary dryer, it is characterized in that the lifting blade a(2 of raising material unit by dryer rotary barrel (1), end band radian), lifting blade b(3) and " L " shape lifting blade (4) and flange circle (5), center-pole (6), support bar (7) and reinforced pipe (8) composition; The wherein lifting blade a(2 of end band radian) be evenly arranged on the internal face of dryer rotary barrel (1), circular arc end points to the direction of rotation of cylindrical shell; Flange circle (5) is fixed in the cavity of cylindrical shell by the reinforced pipe (8) that is fixed on the support bar (7) on center-pole (6) and is fixed on drier body internal face, lifting blade b(3) be evenly arranged on flange circle (5); The two ends of center-pole are fixed on dryer charging and discharging mouth end, rotate with dryer; " L " shape lifting blade (4) is fixed on center-pole; Dryer rotary barrel (1) is coaxial with flange circle (5) and center-pole (6).

2. the raising material unit of a kind of rotary dryer as claimed in claim 1, it is characterized in that lifting blade a leading portion straight portion height is 1/4 ~ 1/3 of dryer rotary barrel radius, and become 0 ° ~ 15 ° angles with drier body diameter, 0 ° ~ 80 °, end circular arc central angle, it installs quantity is 8-12.

3. the raising material unit of a kind of rotary dryer as claimed in claim 1, it is characterized in that lifting blade b becomes 0 ° ~ 45° angle with drier body diameter, it is highly 1/5 ~ 1/4 of cylindrical shell radius, and the installation site of lifting blade b is on the center line of two adjacent lifting blade a, it installs quantity can be identical with lifting blade a quantity, can be also 1/2 of lifting blade a quantity.

4. the raising material unit of a kind of rotary dryer as claimed in claim 1, is characterized in that it is 4 that " L " shape lifting blade is installed quantity, and its length is 1/4 ~ 1/3 of cylindrical shell radius, and the end of bending points to contrary with cylindrical shell direction of rotation.