RU2001011C1 - Loose material feeder - Google Patents

Description

FIELD OF THE INVENTION This invention relates to means for supplying clumping bulk materials to pneumatic conveying plants and can be used in the chemical industry for loading press powders and short-fiber asbass-type press materials.

The closest to the claimed invention in technical essence and the achieved effect is a feeder for bulk materials containing a hopper mounted below it in a horizontal plane with the possibility of reciprocating movement from the actuator bottom with rectangular holes and a movable shutter mounted under bottom and made with holes corresponding to holes in the bottom.

The disadvantages of this feeder are the inability to calibrate the feed material, which does not allow it to be used for feeding pneumatic conveying, in particular clumping materials such as press powders and short-fiber press materials, such as asbass materials.

In the proposed feeder for bulk materials containing a hopper mounted under it in a horizontal plane with the possibility of reciprocating movement from the actuator, the bottom with rectangular holes and a movable shutter installed under the bottom and made with holes corresponding to the holes in the bottom, according to the invention, the holes in the bottom and the shutter are made square and are located diagonally in the direction of movement of the bottom with a step equal to the diagonal in the direction of movement of searching and perpendicular direction.

This makes it possible to calibrate the material according to two linear dimensions, which, provided the bottom is vibrated from the drive, eliminates the leakage of material particles not carried by pneumatic transport, as well as destroys the agglomerates of clumping materials.

The power supply is also provided with two limit switches installed with the possibility of interacting with the movable bottom, one of which is fixedly mounted on the hopper, and the second on the shutter, the bottom movement drive is reversible, and the forward and reverse switching circuits are connected to different limit switches mi

This reduces the energy consumption of the feeder by eliminating the idling of the moving bottom.

It is also possible to provide a feeder with a bottom displacement drive equipped with a speed controller. This allows you to adjust the frequency of movement of the bottom,

by setting its speed than completely eliminating arch formation by selecting the appropriate frequency, adjusting the feeder performance while maintaining the calibration of the transmitted material particles by changing the time the holes were located in the bottom and the shutter one above the other and increasing the probability of agglomerate destruction of clumping materials by changing the speed and 5 frequency of application of dynamic alternating loads.

Figure 1 shows a diagram of a feeder; in Fig.2 - a fragment of the bottom.

The feeder for bulk materials contains a hopper 1, mounted below it in a horizontal plane with the possibility of reciprocating movement from the drive 2 of the bottom 3 with square holes 4. located diagonally

5 to the direction of movement of the bottom 3 with a step equal to the diagonal in the same perpendicular direction, and a movable shutter 5 mounted under the bottom 3 and made with holes 6 corresponding to the holes 4 in the bottom 3.

The feeder can also be equipped with two end switches 7 and 8, installed with the possibility of interaction with the movable bottom 3, one of

5 of which are fixedly mounted on the hopper 1, and the second on the shutter 5, the actuator 2 is reversible, and the forward and reverse switching circuits are connected to different switches 7 or 8. The power supply may also contain a speed controller 9 of the actuator 2 When using a feeder for feeding pneumatic conveying, a mixing chamber 10 is installed underneath it to agitate the feed material 5 with a gas stream for further transportation.

The feeder operates as follows.

Feeding clumping material

0 for example, the asbomass 143-63T is loaded into the hopper 1 on the bottom 3 when it is in position when the holes 4 do not overlap with the holes 6 in the shutter 5. After that, by setting the shutter 5

5 the maximum diagonal size of the passed fraction of the material by adjusting the possible alignment of holes 4 and 6 at the extreme position of the bottom 3. Then turn on the drive 2. which moves the bottom 3 in the horizontal plane, periodically aligning the size of the hole 4 and 6 to the set position of the shutter 5. Return - translational movement of the bottom 3 eliminates the possibility of arched formation in the hopper 1 with a sufficient frequency of vibrations and ensures the outflow of material from the hopper 1 through holes 4 and 6 in the bottom 3 and the shutter 5 in mrm nt their partial overlap or coincidence to the mixing chamber 10 where the material vzmuchivaets carrier gas and fed into the pneumatic conveying system. The agglomerates of the crumpled material are destroyed due to dynamic alternating loads when interacting with the walls of the holes 4 in the bottom 3, while the probability of rebound of the agglomerated material from them is lower than in the closest technical solution due to the change in the pressure angle of the wall of the holes 4 on the material from the codirectional the movement of the bottom 3 to directed towards him at an angle of 45 °. The agglomerates are also destroyed by cutting off the impassable fraction in holes 4 and b with their relative movement.

The location of the holes 4 and 6 with diagonals in the direction of movement of the bottom 3 allows you to simultaneously limit two linear sizes of the material fraction passing through them, which eliminates the possibility of slip of flat or long agglomerates of material, not transporting

Claims (3)

1. A FEEDER FOR BULK MATERIALS, Containing a hopper, mounted underneath it in a horizontal plane with the possibility of reciprocating movement from the actuator, a bottom with holes of a rectangular shape and a movable shutter with holes corresponding to the holes in the bottom mounted under it, characterized in that the holes in the bottom and the shutter are square and diagonally arranged in the direction of movement of the shutter with a step equal to the diagonal of the holes in the same and perpendicular direction. air flow 8 pneumatic system due to the large mass. The use of a reversing drive 2 and two limit switches 7 and 8 connected to the forward and reverse switching circuits of the drive 2 eliminates the idling of the bottom 3 due to its interaction with the point overlapping of the holes 4 and 6 fixed to the hopper 1 by a switch 7 and interacting with a switch 8 fixed to the shutter 5 at a given maximum position of the overlap of holes 4 and 6, Availability of drive speed controller 9 2 allows you to adjust the frequency of overlapping holes 4 and 6 and, thereby, completely eliminates the possibility of arch formation when using any material and when switching from one material to another and to regulate the third linear size of the transmitted material fraction by cutting the passage of the material fraction at the third linear size exceeding the path traveled by the body in free fall during the overlap of holes 4 and 6. Thus, the feeder of the proposed design makes it possible to calibrate the passed material in two or three linear dimensions, completely eliminates arch formation, which allows it to be used when feeding pneumatic transport with clumping bulk materials. (56) USSR copyright certificate fsfe 610758, cl. B 65 G 90/60, 1976. 2.Feeder according to claim 1. characterized in that it is equipped with two limit switches mounted to interact with the movable bottom, one of which is fixedly mounted on the hopper, and the second on the shutter, while the bottom movement actuator is reversible, and the forward and reverse drive switching circuits connected to corresponding limit switches. 3. The feeder according to claim 1, characterized in that the bottom movement drive is equipped with a speed controller. oW Y / g.2