JPH04349156A - Foreign matter remover - Google Patents

Abstract

PURPOSE:To safely and automatically remove foreign matter by providing a hopper, a movable frame, an eccentric driving device, a flap damper, etc., to a conveyor for the mined mineral. CONSTITUTION:Dry clay, etc., are conveyed by a belt conveyor, charged into a hopper 3 and dropped on the grizzly plate 12 of a grizzly 7 fixed to a movable frame 5 and vibrating to the left and right. The grizzly 7 is then vibrated by the crankshaft 27 and connecting rod 26 of an eccentric driving device 8 to drop the clay smaller than the mesh of the plate 12. The remaining larger foreign matter such as clay is slid on the inclined surface of the grizzly 7 and placed on a flap damper 9, and the heavy lumps of clay are dropped by vibrating a damper plate 21. The large lumps are further transferred on a second damper 1, dropped and separated. The remaining foreign matter such as roots and tree pieces are passed over the second damper 9, classified and removed.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a device for removing foreign substances such as tree roots and wood chips contained in mined minerals, and particularly relates to a device for removing foreign substances such as tree roots and wood chips mixed in clay contained in cement raw materials. It is something.

0002

[Prior Art] Conventionally, in the general cement manufacturing process, clinker, which is an intermediate product of cement, has been manufactured using limestone and clay as the main raw materials, and limestone and clay are fired in a kiln to make clinker. Ru. Before firing such clinker, the limestone and clays are ground in a mill. Furthermore, each raw material is usually dried using an appropriate drying device before the step of pulverizing limestone or clay.

0003

[Problems to be Solved by the Invention] In such a conventional cement manufacturing process, raw materials such as limestone and clay are dried before the pulverizing process in which raw materials such as limestone and clay are crushed in order to burn clinker. This type of cement contains foreign objects such as tree roots and wood chips, and these foreign objects can become clogged in the chute of the transporter after this drying process, causing a major hindrance to the stable operation of the entire cement manufacturing process. ing. Additionally, foreign objects such as tree roots that are stuck in the chute are generally removed manually.

[0004] Therefore, an object of the present invention is to provide a foreign matter removal method for sorting and removing foreign matter such as tree roots and wood chips on the exit side of a belt conveyor before the chute of a transport machine, in order to solve the problems in the prior art. The goal is to provide equipment.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned objects, according to the present invention, a foreign matter removal device is mounted on a fixed frame to receive minerals from a belt conveyor conveying mined minerals. A movable frame is suspended from a fixed frame by elastic materials such as rubber plates and springs, a grizzly is attached to the movable frame to sort out foreign objects, and the movable frame is vibrated left and right to vibrate the grizzly from side to side. It consists of an eccentric drive device for separating the foreign matter and large chunks of mineral material that have been sorted by the grizzly.

Other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0007]

EMBODIMENTS As shown in FIGS. 1 to 3, a foreign matter removal device 1 according to the present invention has a fixed frame for receiving clay from a belt conveyor 2 that conveys dried clay as mined minerals. 4, a movable frame 5 suspended from the fixed frame 4 by an elastic member 6 such as a rubber plate or a spring, a grizzly 7 attached to the movable frame 5 for sorting foreign objects, and a grizzly It is mainly composed of an eccentric drive device 8 that vibrates the movable frame 5 from side to side in order to vibrate the movable frame 5 from side to side, and a flap damper 9 for further sorting the foreign matter and large chunks of clay sorted by the grizzly 7. There is.

As shown in the figure, the hopper 3 of the foreign matter removing apparatus 1 of the present invention is attached to a fixed frame 4 so as to receive clay conveyed by a belt conveyor 2. A movable frame 5 consisting of a pair of movable plates 11 spaced apart is suspended from the fixed frame 4 by an elastic member 6 such as a rubber plate or a spring. This movable frame 5 has a grizzly ring 7 for separating clay and foreign matter.
is provided below the hopper 3. This grizzly 7
In the illustrated embodiment, a plurality of thin grizzly plates 12 are provided at intervals in a chevron shape inclined from side to side so that the central portion forms the apex, and if necessary, it is possible to move from one side to the other side. It is also possible to configure it so that it is inclined to the side. Therefore, the illustrated chevron-shaped grizzly plate 7 has one end 15 of each grizzly plate 12 attached to the movable frame 5 around a shaft 14 which is fixed by welding, for example, and further has left and right plates fixed to the movable plate 11 of the movable frame 5. The other end of each grizzly plate 12 is inserted into the slit of the shaft 16 of the grizzly plate 12, and it is possible to sieve out clay lumps, powder, etc. that are smaller than the grizzly mesh width of the clay in the raw material. It is made up like this.

Flap dampers 9 are provided near both left and right ends of the grizzly 5 configured as described above for sorting clay, for further sorting large lumps of clay and foreign matter. The flap damper 9 is composed of a damper plate 21 that is fixed to a shaft 20 and supported so as to be pivotable together with the shaft 20 so as to be normally positioned horizontally, and a damper adjustment weight 22 that is attached to the shaft 20. When a large lump of clay is placed on the damper plate 21,
Due to the weight of the large lump of clay, the damper plate 21 pivots together with the shaft 20, causing the large lump of clay to fall downward.On the other hand, light foreign objects such as tree roots and pieces of wood fall onto the damper plate 21. After passing through the
The flap damper 9 in the second stage is also shaken off and sorted in the same way, and finally only foreign substances such as tree roots and wood chips are removed left and right and sorted and removed.

An eccentric drive device 8 for vibrating the grizzly grip 7 attached to the movable frame 5 from side to side has one end connected via a pin 25 to one side of a rubber plate which is an elastic member 6 that suspends and supports the movable frame 5. connecting rod 26,
An eccentric crankshaft 27 that vibrates the connecting rod 26 from side to side, a bearing box 28 that supports the eccentric crankshaft 27, and an electric motor 29 with a transmission 30 that rotationally drives the eccentric crankshaft 27.
It is composed of. In addition, the rotating shaft 31 of the electric motor 29
is supported by a suitable bearing 33 such as a plummer block, and a balance weight 35 is preferably provided to cancel vibrations of the rotating shaft 31 and maintain adjustment.

In the foreign matter removing device 1 of the present invention constructed in this manner, dried clay is conveyed to the belt conveyor 2.
It is conveyed by the hopper 3, and is dropped onto the grizzly plate 12 of the grizzly 7, which vibrates from side to side. Also. The clay that falls onto the grizzly 7, which is vibrated from side to side via the connecting rod 26 by the eccentric crankshaft 27 of the eccentric drive device 8, is sieved by the vibrating grizzly 7, and is separated between the grizzly plates 12 of the grizzly 7. Clay smaller than eye width is grizzly 7
Falling down from between the eyes. The remaining lumps of clay larger than the eye width of the grizzly 7 and foreign objects such as tree roots and wood chips move on the sloping surface of the vibrating grizzly 7 toward the left and right ends, and eventually the grizzly 7 The heavy lumps of clay and lumps fall from the edge of the flap damper 9 and land on the first flap damper 9, and the heavy clay lumps and lumps pivot downward through the damper plate 21 of the flap damper 9. foreign objects such as other tree roots and wood chips, and large lumps that were not shaken off after jumping off the first-stage flap damper 9 are moved to the next second-stage flap damper 9. Then, the remaining large lumps of clay and clumped stones fall down and are separated by the second-stage flap damper 9, and the foreign substances such as tree roots and wood chips that are finally left are removed by the second-stage flap damper 9. It passes over the top and is further discharged to the outside, so that only foreign substances such as tree roots and wood chips are finally completely separated and removed from side to side.

0012

[Effects of the Invention] As described above, according to the foreign matter removal device of the present invention, foreign matter such as tree roots and wood chips contained in the mined minerals are sieved from the mineral matter on the vibrating grizzly.
The remaining mineral mass is sorted out from the foreign matter by the next first-stage flap damper, and the final remaining mineral mass is further divided by the next second-stage flap damper, and finally only the foreign matter is separated. is removed, leaving behind unnecessary foreign substances such as tree roots and wood chips, which can be effectively removed from mineral substances, and furthermore, the removal of these foreign substances can be carried out mechanically and automatically without manual intervention. This allows us to use only sifted mineral materials as raw materials, ensuring stable operation of the entire manufacturing process, reducing labor costs by eliminating the need for manpower to remove foreign substances, and reducing machine damage due to foreign substances. Effects such as eliminating clogging, extending the life of the machine, and preventing damage to the machine can be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a foreign matter removal device of the present invention.

FIG. 2 is a schematic plan view of the foreign matter removal device of FIG. 1;

FIG. 3 is an end view of the foreign matter removal device of FIG. 1;

[Explanation of symbols]

1 Foreign matter removal device 2 Belt conveyor 3 Hopper 4 Fixed frame 5 Movable frame 6 Elastic member 7 Grizzly 8 Eccentric drive device 9 Flap damper 11 Movable plate 12 Grizzly Plate 21 Damper plate 22 Damper adjustment weight 26 Conrod 27 Crankshaft 29 Electric motor

Claims (2)

[Claims] 1. A hopper attached to a fixed frame to receive minerals from a belt conveyor conveying mined minerals; a movable frame suspended and supported by the fixed frame by an elastic material such as a rubber plate or a spring; A grizzly attached to the movable frame for sorting foreign matter; an eccentric drive device for vibrating the movable frame from side to side to vibrate the grizzly from side to side; A foreign matter removal device comprising a flap damper. 2. The foreign matter removal device according to claim 1, wherein the mineral material from which the foreign matter is removed is dried clay.