DE1817136A1 - Device for taking samples from bulk material - Google Patents

Description

THE BiHMIHGHAM SMAIiE ARMS GQMPAHY LIMIO) ED Armory Road, Small Heath,
Birmingham 11 / Great Britain

Device for taking samples from bulk material

The invention relates to a device for taking samples of Sohüttgut while it falls in a stream, and in particular on a device for Sampling of bulk material consisting of small pieces, such as. B. coal, in which a sample container causes is to undertake sampling passes, each consisting of at least one pass through the falling Material flow exist, "and deliver the material removed from it.

According to the invention, the device for taking samples Sohüttgut, while it falls in a stream, a sample container, which leads to the arched Movement mounted on a pair of spaced-apart arms, the movement being the container is issued by means of a movable, resilient connecting element, such as by a Chain or rope.

St.

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The sample container is preferably arranged to face in opposite directions with the flow therethrough can be moved, wherein means are provided for taking a sample from the material »while the container moves in each direction. Preferably the container is so arranged and operable that it crosses the stream at an angle that is approximately a right angle to the material stream.

α Bas flexible connecting element for moving the container is preferably a chain and is preferably arranged so that it is over or between arcuate Leadership laugh moves you. Either an endless chain or an endless rope can be used.

The invention is described below with reference to the drawing. Show in it:

Pig. 1 a partial step through the sampling device along the B-B line in Pig. 2y

Pig. 2 shows a section along the line C-C in Pig. 1.

According to the drawing, the device for taking samples has the construction shown, for example a device for sampling coal while it is in a dashed line 1 in Pig. 1 indicated Current protrudes, which is delivered from the front run 2 of a conveyor 3, naohdem he through the Conveyor has been transported in the direction indicated by an arrow A, a frame 4 on which a pair of radially disposed arms 5 are pivotally mounted

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are, to which a sample container 6 is rigidly attached, which hangs in its normal rest position in front of and above the front run 2 of the conveyor 3. A heavy duty roller chain 7 is connected to each side of the container, and a chain runs over a sprocket 8, these sprockets being keyed to one end of a shaft 9 which is rotatably mounted in bearings 10 on an upper structure of the frame. The chains 7 hang from the sprockets 8 near the bottom, pass over a second pair of sprockets 11 and then extend near the top, and the end of each chain is attached to the frame. The chain wheels 11 are keyed onto shafts 12 which are arranged in bearings 13 on a frame 14 which carries a set of counterweights 15. The frame 14 is arranged in a vertical column-like structure 16 in which it is guided for vertical movement, as will be described below.

A reversible electric drive unit 17 is coupled to the shafts 9 to transmit the desired movements to the chains 7 »in order to operate the container β and the counterweights 15. The container 6 sohwenkt in an arc about the pivotally mounted arms 5 riäh- ä end of its upward and downward movements, while being held by the chains 7 in more detail speed over fixed guide angle run 16, preferably on a shaft 19 for receiving of samples are attached, which are dispensed from the container 6, which is usually wider than the material flow 1 and is provided with a cutting opening which is set approximately at right angles to the material flow. This sons oath opening has a size for the part to be collected

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suitable width so that a typical portion is taken.

The sample container is provided with an outlet flap 20, the means for automatically opening the flap for Dispensing the sample to the shaft 19 and then automatically closing the flap. In the one in Pig. 1, the flap 20 is in its closed position by a two-armed lever 21 held, one arm of which is connected to a bolt 22 which detects the outlet flap. The outer end of the lever 21 can touch an adjustable stop 23, which is attached to a suitable fixed part of the facility. A touch between the arm 21 and the stop 23 causes a loosening of the bolt 22 and thus a release of the outlet flap.

To automatically close the downwardly hanging outlet flap 20 is on a suitable fixed part of the Device an element 24 articulated to which a spring-loaded plunger 25 with an anti-friction roller 26 is attached at its outer end. This role protrudes into the path of the sample container 6 and is arranged so that when the container moves past her on its way to the delivery position, the element 24 is moved out of the path of the container about its bearing point 27. If sioh jedooh the container 6 moves down against the roller 26, when the outlet door 20 is open, contacts the roller the flap and since the pivoting movement of the element 24 is limited in this direction, causes a continued

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Set movement of the container that the flap is closed and secured by the latch 22. Another Movement driiokt the roller 26 only against its spring-loaded plunger.25, whereby the container 6 the possibility given to continue its downward movement.

When the device is in operation, the container 6 also starts closed outlet flap 20 from its upper rest position and swings in an arc downward, wherein it accelerates under the action of the motor-driven chains 7 to a predetermined speed before it enters the material flow 1. The speed of the container remains constant while in the stream and one half of the proportion collects. If the container is moving downwards. tion from the stream, it will be under the control the drive unit 17 is delayed and brought to rest under the front run 2 of the conveyor 3. Then immediately reversed the direction of movement of the container so that it pivots upwards and onto a predetermined one Speed is accelerated, which is equal to the downward speed before entering the material flow is. The container is held at this speed as it passes through the stream and the second half of the share collects.

The container 6 is brought to rest in its initial upper position, where the outlet flap 20 is automatically released by releasing the latch 22 in the one described above Manner is opened in order to deliver the material to the Sohacht 19 for further treatment or for collection,

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whereby the door rests within the Schaohtes to a Prevent spillage.

The sample container remains in this position until a Timer indicates that another portion is to be withdrawn. Then the above process is repeated, the outlet flap 20 of the container being automatically closed by the element 24 in the manner described above before the container is on its way down at full speed.

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Claims (1)

Claims; 1. Device for sampling bulk material while it falls down in a stream, characterized by a sample container attached to a End of a pair of spaced arms for arcuate movement with controlled Speed is arranged through the flow of material, the movement being the Sample container is issued by means of a movable, resilient transmission element connected to the container. 2. Device according to claim 1, characterized in that that the resilient transmission element is a chain that moves over sprockets and arcuate guide surfaces is arranged. 3. Device according to claim 1 or 2, characterized by a frame on which the spaced apart arranged, the sample container carrying arms are arranged, and connected to the container Chains that run over sprockets that are attached to the frame and arched over the top Movement path of the container are arranged, sioh from the upper sprockets after extend below, via further chain wheels attached to a vertically movable counterweight and then extend upward to attachment to the frame. 9 0.9833 / 0952 - ⁸ ~ 4. Device according to claim 3, characterized in that that the chains are driven by the upper sprockets of shafts on which the sprockets are fixed and with a reversible electrical mounted on the frame Drive unit are coupled, whereby the chains when applying an arcuate upward and downward movement on the sample container also apply a vertical movement on a counterweight, which is arranged in a shaft-like construction of the frame. 5. Device according to one of the preceding claims, characterized in that the sample container is provided with a hinged flap which during the arcuate movement of the container can be automatically opened and closed, whereby material collected in the container in a suitably arranged shaft can be delivered. 6. Device according to claim 5 »characterized in that the flap of the container in its closed Location is held by a bolt hinged to / on the container, which is held by a the container arranged lever is operated, which can contact a stop element on the Frame is attached to thereby cause a release of the latch and a release of the flap, when the container reaches the top layer of its arcuate trajectory. 90S833 / 0952 -9- 7. Device according to claim 5 and 6, characterized in that that during the initial arcuate downward movement of the container its downward hanging open flap can touch an element which extends into the path of the container and can only be moved in the upward direction, the. Arrangement is such that upon contact with this Element the door is closed and secured by its latch, while the container is at its The element is displaced in an arc-shaped upward movement into the unloading position and moves past it. 8. Device according to claim 5 and 7 »characterized in that that the element consists of a spring-loaded plunger which is on a suitable part the frame to the limited arcuate upward and downward movement arranged around a fixed storage point and at its outer end carries a roller which protrudes into the path of the container. 9098 33/0952