Fixed quantity supply device

Abstract

The invention provides a fixed quantity supply device capable of preventing the materials transported adhering in the chamber of a valve, and further provides a fixed quantity supply device capable of preventing the curing of the materials transported in the space between a valve and a casing to maintain the rotation of the valve. The fixed quantity supply device (10) comprises a valve (30) rotatably arranged in a casing (20) and having a chamber (34) importing the materials transported, a pair of base rings (40) embedded in two sides of the casing (20) and sealed with the valve (30) for sealing. A clapper (70) is arranged in the chamber (34) of the valve (30) to clap the material transported in the chamber (34) and provided with a shaft (71) concentrically inserted with a rotating shaft (36) of the valve (30) and fixed with the casing (20) at one end, a pair of arms (72) supported by the shaft (71) and a clapper part (73) fixed at the front ends of the arms (72). A rotation allowable mechanism (80) is provided between the shaft (71) and arms (72) to rotate the valve when the load on the arms exceeds the prescribed load. The valve (30) is provided with a blade (91) collecting the materials transported in the space (S) between the valve (30) and the casing (20) and an import opening (92) importing the materials transported from the blade (91) to the chamber (34).

Description

technical field [0001] The present invention relates to a quantitative supply device, for example, in a chemical plant, a food factory, etc., which supplies a predetermined amount of objects to be transferred (such as powder, etc.) from a supply device such as a hopper to a pipe of a conveyance path. Background technique [0002] As an existing quantitative supply device, it is known to have a cylindrical casing, which is arranged in the casing so as to be rotatable around a rotating shaft arranged to cross the direction of the cylindrical axis of the casing, and has a device for introducing the object to be transferred. A small chamber valve, a quantitative supply device for a pair of seat rings that are inserted on both sides of the cylindrical axis direction of the housing and are in close contact with the valve to seal it. A pair of side panels of the part, and an opening formed on the peripheral surface of the cylindrical part. In addition, the above-mentioned conventi...

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Problems solved by technology

[0004] However, when the quantitative supply device described in the above-mentioned Patent Document 1 handles a highly viscous object to be transferred (such as sewage sludge, etc.), the object to be transferred tends to stick to the small chamber of the valve, which may reduce its processing capacity.

In addition, as a method of peeling off the transfer object stuck in the small chamber, a method of applying vibration or impact to the valve can also be considered, but it is not suitable for a valve that is always rotating.

[0005] In addition, in the quantitative supply device described in the above-mentioned Patent Document 1, since the valve rotates, the object to be transferred tends to enter the clearance space between the valve and the casing and solidify, possibly hindering the rotation of the valve.

In addition, it is also conceivable to separately install a part buried in the above-mentioned gap space so that the object to be transferred does not enter the above-mentioned gap space, but as a result, the object to be transferred tends to enter between this part and the valve and solidify, so fundamentally cannot be obtained. the solution

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