US2301815A - Pulverized material sampler - Google Patents

Description

l [Maida //VD/ J @o5/50N R E L m O Num.. @M1 III: Ema TVV. RAo JD .ww SIU. R EF V, L U P Nov. 1o, 1942.

Patented Nov. 10, 1942 i UNITED srnrss iiTiN'i' OFFICE This invention relates'to a means for obtaining samples of pulverized material, and particularly to an improved apparatus for collecting various materials in powdered form, such as cement samples and the like. f

It is the general object of the present invention to provide an improved apparatus for `continuously obtaining a representative sample from a flowing lstream of pulverized materialand the like;

It is `another object of the invention to pro- Vvide an improved apparatus for continuously sampling pulverized material and the like which is simple and inexpensive in its construction and, at the .same time, one that is eiiicient and :l5 effective in its use.

It isa further lobject of this invention to provide an improved apparatus for continuously sampling pulverized material and the like which is 'strong and rugged in its construction and yet :120

an apparatus which can be conveniently and .sampling apparatus of my invention; and

Figure 2 is a section taken on line II-II of Figure 1. i

Referring more particularly to the drawing,

' the improved sampling device of my invention is shown incorporated with a vertically arranged spout or conduit member 2 through which the cement or other pulverized material passes from 40 one point to another.

According to the present invention, there is arranged within a housing 3 positioned to one side of the spout or conduit 2, a horizontally arranged shaft li which is arranged in suitable bearings 5 carried by the housing 3. There is securely arranged on the shaft 4 centrally thereof, a disk-like member 6 having a plurality of spaced apart pockets I arranged around the periphery thereof for receiving sample portions of the material as will hereinafter be described. The disk-like member 6 is arranged so that a portion thereof extends through a slotted opening 8 and is disposed within the vertically arranged spout or conduit 2. The space between the Aedge of the opening 8 and the side walls of the disk-like member 6 is sealed preferably by means or a felt member 9 suitably arranged around the opening at both the sides, the top and the bottom of the disk 6 so as to seal the opening 8 against leakage.

There is securely arranged on one end of the shaft a circular member Ii] having cam portions i2 arranged preferably on the outer 'face `thereof adjacent the periphery of the same.

There is mounted on the outer side of the housing 3 adjacent the outer edge of the circular member I0, a rapping member in the form of a pin I3 which is suitably mounted in a supporting member or housing i4 which houses a pair of coil springs Ii and I5b disposed around the pin with a flange I5 carried by the pin positioned therebetween and With the spring I5b positioned below the ange adapted to retain the pinin a retracted position. That is, the rapping pin I3 is suspended by the lower spring so that the pin is normally slightly clear of the side of the sampling wheel or member 6. On the outer end of the pin I3 there is positioned preferably a pin or stud shaft I6 which carries a roller I1 which is adapted to cooperate with the cam portions i?. carried by the circular member I0 in a manner hereinafter to be described.

The shaft l may be driven in any suitable manner, but in the present instance there is shown a sprocket I8 securely arranged on the opposite end oi the shaft 4 from the circular member I3 which may be driven by a gear reducer and motor (not shown).

It will be understood that the sampling device of my invention operates in the following manner:

The disk-like member 6, together with shaft to which itis attached, is revolved in the direction shown by the arrow in Figure l, at a relatively slow speed in the stream of material as the same passes through the spout or conduit member 2. During such travel, the upperpockets l disposed in the spout 2 will be filled with the material as the disk-like member rotates. As the pockets 'I pass through the slotted opening 8 and down through the housing 3, the circular member I9 will actuate the pin I3 through the cooperation of the cam members I2 and the roller I l thereby loading the coil spring I5. The pin will strike a sharp blow against the side of the disk-like member 6 after the cam I2 is out of contact with the roller I'I. The material.

is thereby loosened from the pockets and will drop freely therefrom and be delivered into the funnel-shaped portion I9 arranged at the bot tom of the housing 3 to which there is preferably connected a removable sample boX 20. It will be understood that when the pin I3 is released to deliver a tap or rapping action on the disk 6, it will travel beyond the neutral point or its retracted position against the action of the lower spring Mib, thereby loading the same and the spring i510 will then return the pin to its retracted or neutral position away from the disk.

It will be seen that my improved sampling device is shown incorporated with a gravity spout or conduit, but it will be understood that if desired, it can be incorporated in the systems where the cement or pulverized fuel is transported by means of pneumatic pressure. In such a case, the housing 3 would be air tightand the sample container or box Ztl would be attached to the funnel-shaped portion i9 of the housing 3 with an air-tight joint. In such a case, the pressure in the transport pipe or conduit 2 and the housing 3 would be equalized and there would be no tendency for the cement or pulverized material to be forced through the opening 8 and the seal 9 around the disk-like member 6.

While I have shown and described an embodiment of my invention, it will be understood that I do not wish to be limited exactly thereto since various modications may be made without departing from the scope of the invention, as defined in the appended claims.

I claim:

l. Apparatus of the class described including, in combination, a substantially horizontal shaft, a rotatable disk-like member securely arranged on said shaft which is adapted to rotate with a segment thereof in Contact with the stream of material to be sampled, said disk-like member having a plurality of spaced apart pockets arranged around the periphery thereof for receiving sample portions of the material as the same is rotated in contact therewith, a rapping member which is adapted to tap the disk-like member so as to cause the sample portions to drop therefrom due to gravity, means for receiving and coloting the sample portions as the same are delivered from the pockets in said disk-like member, a rotatable cam member securely arranged portions as the same are delivered from the pockets of said disk-like member, and means for actuating intermittently said rapping member. 3. Apparatus of the class described including, in combination, a vertically arranged conduit through which the material to be sampled ows to a point of delivery, a substantially horizontal shaft rotatably arranged to one side of said conduit, a disk-like member having a portion thereof extending into said conduit securely arranged on said shaft, said disk-like member having a plurality of spaced apart pockets arranged around the periphery thereof for receiving sample portions of the material as the same is rotated in the conduit and the material comes in contact therewith, a rapping member which is adapted to tap the disk-like member so as to cause the sample portions to drop therefrom due to gravity, means arranged below said disk-like member for receiving and collecting the sample portions as the same, are delivered therefrom, a rotatable cam member securely arranged on said shaft which is adapted to intermittently actuate said rapping member, and means for rotating said shaft together with said disk-like member an said cam member.

4. Apparatus of the class described including, in combination, a conduit through which the material to be sampled passes to a point of delivery, said conduit having an elongated opening arranged in the side thereof, a disk-like rotatable member having a portion thereof extending through said opening into said conduit, said disklike member having a plurality of spaced apart pockets arranged around the periphery thereof for receiving sample portions of the material as the rotatable member rotates in the opening in said conduit, means arranged around said opening and the rotatable member for sealing the space between the sides of the opening and the rotatable member disposed therein against leakage, said rotatable members upon rotation thereof adapted to pick up portions of the material from said conduit for sampling by means of the pockets carried by said rotatable member and to carry said portions to a point outside of said conduit, and means arranged on the outer side of said conduit for receiving the sample portions of the material as they are delivered from said pockets.

SIDNEY J. ROBISON.

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