UA4818U - Device for determining the capacity of a conveyor system for transporting free-flowing materials - Google Patents

Abstract

The proposed device for determining the capacity of conveyor system with an elevator for transporting free-flowing materials contains a measuring chamber with a hinged bottom, a discharging unit with a damper, a control unit for controlling the damper, a weigher coupled with the discharging unit, a counter for counting the elevator wings, and a computing unit. The signal output of the weigher is connected to the first input of the computing unit. The output of the counter is connected to the second input of the computing unit and the input of the damper control unit.

Description

The useful model belongs to the field of measuring technology and can be used to measure the productivity of bulk materials in the devices of the flow-transport system, for example, in the elevators of depositing machines.

The closest thing to the claimed device is a device for measuring the parameters of bulk materials, in particular productivity, which contains a measuring chamber connected to a flow-transport system with a hinged and fixed inclined bottom with scales and an unloader (see "Device for continuous measurement of parameters explosive materials". JSC USSR Meo279163, b 01p 9.02, bulletin Me26, 1971) - prototype.

The disadvantage of the known device is the need to precisely dose the weight of bulk material into the hinged inclined bottom with scales and an unloader. Since accurate dosing of bulk material is impossible when unloading elevator buckets, when filling a platform with a sloping bottom, which is automatically unloaded when a certain weight is reached, there will always be an overload city. Inaccurate dosing will affect the increase in the measurement error of bulk material productivity.

The basis of the useful model is the task of improving the device for measuring the productivity of bulk materials in the flow-transport system by equipping the device with a return slide with an unloader, a counter of elevator buckets and a computer unit. which will lead to a reduction in the measurement error of bulk materials performance.

The task is achieved by the fact that the device for measuring the productivity of bulk materials in the flow-transport system, which contains a measuring chamber connected to the flow-transport system with a hinged and fixed inclined bottom with an unloader and scales, according to a useful model, is supplied with a return gate with an unloader , the counter of the elevator buckets and the computing unit, and the signal from the output of the scales, mechanically connected to the hinged and fixed inclined bottom with the unloader, enters the first input of the computing unit, and the signal from the output of the counter of the elevator buckets enters the second input of the computing unit and the input return gate with unloader.

The presence of a return gate with an unloader and a bucket counter allows you to pre-accumulate loose material of a certain number of buckets on the plane of the return gate with an unloader. The number of buckets is chosen in such a way that the weight of the material is not greater than the maximum permissible weight, which corresponds to the capacity of the hinged inclined bottom. After the material from a certain number of buckets has spilled onto the plane of the return gate with the unloader, the latter is opened and the collected material is poured into the hinged and fixed inclined bottom with the unloader. After that, the return gate with the unloader closes and becomes ready to receive the next batch of bulk material. The material that spilled onto the hinged, inclined bottom. is weighed and the signal from the output of the scales, proportional to the weight of the material, enters the input of the computing unit. The information contained in this signal. together with the information that comes from the output of the counter of elevator buckets, is the data on the basis of which the productivity of the elevator is calculated for the time it takes to unload the accepted number of buckets.

The essence of the useful model is explained by the illustrative material, where Fig. 1 shows the layout of the device elements, Fig. 2 shows the functional diagram of the device.

Bulk material from the buckets of the elevator enters the measuring chamber 1, in which a hinged inclined bottom with an unloader З and scales 4 is installed. Between the elevator and an inclined bottom with an unloader З and scales 4 there is a return gate 2 with an unloader, and a bucket counter is installed on the elevator elevator 5.

The device for measuring the productivity of bulk materials in the flow-transport system includes a measuring chamber 1, a hinged inclined bottom 3 with an unloader, scales 4, a return gate 2 with an unloader, a counter of elevator buckets 5 and a computing unit 6. whereby a signal proportional to the weight of the material located on the hinged inclined bottom C with the unloader, from the output of the scales 4, which are in kinematic connection with the hinged inclined bottom 3 with the unloader, enters the first input of the computing unit 6, and the signal from the output of the bucket counter of the elevator 5 enters the second input of the computing unit 6 and the input of the return gate 2 with an unloader.

The presence of a return gate 2 with an unloader and a counter of elevator buckets 5 allows weighing portions of bulk material of different weights, the volume of which does not exceed the capacity of the hinged inclined bottom З with an unloader. The presence of the computing unit 6 allows you to sum up the weight of individual portions and, taking into account the readings of the bucket counter of the elevator 5, to determine the productivity of bulk materials.

The device for measuring the productivity of bulk materials in the flow-transport system works as follows. The material from the buckets of the elevator falls through the measuring chamber 71 to the return slide 2 with the unloader, which is in a closed state. After unloading a certain number of buckets of the elevator, which is controlled by the counter of elevator buckets 5, the return gate 2 is unloaded, and all the material falls into the capacity of the hinged and fixed sloping bottom C with the unloader. After unloading, return gate 2 closes and begins to accumulate another portion of loose material. The material that has fallen on the hinged inclined bottom C with the unloader is weighed by scales 4 and then unloaded by turning the inclined bottom around the hinges. The signal from the scales 4, proportional to the weight of the weighed portion of the material, enters the first input of the computing unit 6, the second input of which receives the signal of the number of unloaded buckets. On the basis of the information received at these two inputs of the computing unit 6, the value of the productivity of the bulk material is calculated.

With such an interconnection of the device blocks, a significant reduction in the measurement error of bulk material performance is ensured, due to the fact that the hinged inclined bottom C with the unloader is not unloaded automatically in case. when a portion of the material reaches a certain mass, and is unloaded only after the weighing process is over.

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Claims (1)

A device for measuring the productivity of bulk materials in a flow-transport system, which contains a measuring chamber, a hinged inclined bottom with an unloader, a scale, which is characterized by the fact that the device is equipped with a reverse gate with an unloader, a counter of elevator buckets and a computing unit, and a signal from the scale output , which are in kinematic connection with the hinged inclined bottom with the unloader, is fed to the first input of the computer unit, and the output of the counter of the elevator buckets is fed to the second input of the computer unit and to the input of the return gate with the unloader.