SU1359138A1 - Apparatus for batching lightweight concrete components - Google Patents

Abstract

The invention relates to the dosing of the components of lightweight concrete on porous aggregates, can be used in the construction and industry of building materials, and it allows to improve the dosing accuracy. The device contains the first weight sensor 1, the first element And 2, the first generator 3 pulses, subtracting counter 4, the second sensor 5 weights, the second element And 6, the second generator 7 pulses, unit 8 code sum of weights of coarse and fine aggregates, unit 9 analysis neither a counter, a channel selector 10, a brand selection unit 11, a volume sensor unit 12, a volumetric dosing control unit 13. The volumetric dosing control unit 13 includes n dosing channels according to the number of components, each of which includes a reinforcement and a matching unit and FRESH AND gate and OR logic. 2 Il. (L made: about 00 00

Description

The invention relates to the dispensing of components of lightweight concrete on loose aggregates and may find application in the construction and industry of building materials.

The purpose of the invention is to improve the accuracy of dosing.

FIG. 1 shows a block diagram of the device; in fig. 2 is a block diagram of a volumetric dosing control unit.

The device contains the first sensor

The weight, made in the form of a transducer of the angle of rotation of the time interval associated with the porous filler dispenser, the first element AND 2 the first generator of 3 pulses, subtracting the counter 4, the second sensor 5 weight associated with the dispenser of the small filler, the second element And 6, the second generator 7 pulses, unit 8 of the code of the sum of the weights of coarse and fine aggregates, unit 9 for analyzing the state of the counter, selector 10 channels, unit 11 for selecting the brand, unit 12 for the volume sensors, unit 13 for controlling the volumetric dosing. The volumetric dosing control unit 13 includes a pan; 1 dosing by the number of volume sensors, each of which includes a reinforcing unit 14 and an AND 15 logic circuit, as well as a logic circuit

SHSh 16, the inputs of which are connected to the outputs of logic elements And 15.

The device works as follows.

Before starting the dosing unit

II selects the required tracking amount of porous and fine aggregate weights from the weighing scale task 8 through the selector 10 and enters the counter 4. Block 13 also receives through the channel selector 10 information about the selected volume sensor. The dosing of the porous aggregate by volume is then carried out. The feed of the porous aggregate to its dispenser is stopped when the level of material in the dispenser tank reaches the level of the selected sensor. Block 13 provides a signal for stopping the dosing of the porous aggregate. By the end of the dosing of the required volume, at the output of the weight sensor 1, a time interval is obtained proportional to the initial weight of the material poured into the dispenser.

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element 2 is filled with this interval by pulses from the first generator of 3 pulses. As a result of these impulses arriving at the subtracting inputs of the counter 4 at the beginning of the dosing of the fine aggregate, the counter is the result of the difference between the codes of the sum of the weights and the weight of the porous aggregate, i.e. the weight of the small filler that needs to be injected. The dosing of the fine aggregate takes place until the subtractive counter 4 is completely cleared, after which the block 9 gives a signal to stop.

At block 14, a signal is received from the corresponding volume sensor about whether the coarse aggregate level in the metering unit has reached the level of this sensor. If not, then block 14 generates a dosing-permitting signal to one of the inputs of circuit 15. To the other input of circuit 15, a signal is received from the channel selector about the selected sensor. If these signals coincide, the circuit 15 provides the enabling signal to the corresponding input of the OR circuit 16. Such a signal may be present at the output of only one channel, the sensor of which is selected by the selector. When the large aggregate reaches the level of the selected sensor, the block 14 impresses the inhibit signal to the circuit 15, therefore, the signals become prohibiting at the channel output and then the signal at the output of the circuit 16 turns off the actuators for feeding the material to the dispenser.

If it is necessary to dose out two fractions of the porous aggregate, one more weight sensor is added, and the generator and the AND circuit - in the case when the dosing of this fracdion occurs in a separate container. If, however, the dosing of two fractions is carried out in a single dosing unit, then only scheme I is added.

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When the volumetric dosing of a porous filler is anticipated for actuating actuators, the location of the volume sensors is somewhat lower than the level that needs to be withdrawn:

The weight dosing of fine aggregate is carried out by setting the codes of task 8 to a slightly smaller value than the sum of porous aggregates weights required for this brand.

Thus, the device implements the principle of volume and weight dosing of lightweight concrete components with the possibility of dosing two fractions of expanded clay gravel for expanded clay concrete of several grades with different codes, which expands the scope of its application in the national economy. The use of a device for metering lightweight concrete components on

a piece of chalk

enterprises with a two-fractional composition - 15 channels, a block of brand selection, a block

The use of a porous aggregate and multi-particle technology makes it possible to stabilize and reduce the bulk mass of ceramisite concrete, which improves its thermophysical characteristics.

Claims (1)

Invention Formula A device for metering lightweight concrete components comprising a first weight sensor and a first pulse generator connected to the respective inputs of the first logic unit. 91384 element And, the second weight sensor and the second pulse generator connected to the corresponding inputs of the second logic element And, the outputs of logic elements And are connected respectively to the first and second inputs of the detracting counter, the output of which is connected to the input of the analyzer’s code of the sum of weights of coarse and fine aggregates, characterized in that, in order to improve the accuracy of dosing, it is equipped with a selector volume sensors and a dosing control unit, and a brand selection unit, unit master of the code for the sum of weights of coarse and fine aggregates and a unit the volume sensors are connected to the corresponding inputs of the channel selector, the first output is connected to the first input of the dosing control unit, the second input of which is connected to the output of the volume sensor unit, and the second output of the channel selector is connected to the third input of the subtracting counter. G6 Editor A.Dolinich Order 6105/18 Circulation 525 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Compiled by A. Kuznetsov Tehred L. Serdyukova Proofreader A.Zimokosov