EA015261B1 - Plant for preparing bitumen-containing materials - Google Patents

Abstract

The invention relates to construction and can be used for restoring old and/or making new roofing from different bitumen-containing materials including from processed old roofing materials. A proposed plant for preparing bitumen-containing materials contains a carriage with a driving handle pivotally connected thereto, a heat-insulated body mounted on the carriage and housed therein a semi-cylindrical capacity with a loading window, a cover and a moisture-removing branch pipe atop a discharge cock and a draining tray in the unloading zone, a working shaft inside and arranged along a longitudinal axis of the capacity and seating in support bearings and sealing members at its front and rear end walls and provided with agitating blades, three phase-connected groups of equally current-loaded electrical heaters arranged evenly along the outer surface of circular wall of the semi-cylindrical capacity, a temperature sensor of a medial loaded into the semi-cylindrical capacity, and also an electric motor arranged on the carriage, the driving shaft of which is connected via a reducer and a kinematic connection with a transfer unit on the working shaft and a system control board comprising a apparatus of the electric motors protection against short circuit, a apparatus of the electric motors protection against short circuit and overload, the first apparatus of the electric motors energizing, the second and third apparatuses riverside electric motor energizing and rotating the working shaft with agitating blades clockwise (forward) and counterclockwise (back), the first and second start-up blocks. The novelty is that each phase of the electric heaters power circuits there included individual sensors of current load control equal to the sum of working currents of corresponding group of electric heaters and to each of them is connected an indicator informing operable condition of a definite group of electric heaters; the electric heaters of the semi-cylindrical capacity are provided with a thermal sensor controlling maximum permissible temperature at their casings and an indicator for reaching this level and automatic prevention of thermo-destruction; the heating system of the semi-cylindrical capacity is provided with an indicator of timely warning about reaching an intermediate temperature, automatic removing of blocking and providing tested short-time transversal agitation in manual mode forcibly and then in the automatic mode by the predetermined program long-time transversal agitation with simultaneous heating and also providing inertial run of the working shaft with agitation blades in both operation modes.

Description

The invention relates to the field of construction and can be used to restore old and / or create new roofs from various bitumen-containing materials, including recycled old roofing.

A known installation for the preparation of bitumen-containing materials, comprising a heating chamber for layers of an old bitumen-containing coating located on a mobile carriage with a grate basket installed therein to hold the base of this material and to freely separate molten bitumen from it, a base grinding chamber and a mixing base for crushed base with fused molten bitumen and preparation necessary roofing material [1].

This installation is very bulky, insufficiently maneuverable, time-consuming and difficult to operate, insufficiently reliable and ineffective in operation, has limited functional and technological capabilities, as well as low quality materials.

In addition, in this installation there are no means to control and regulate the temperature, as well as to monitor the operability of electric heaters.

A known installation for the preparation of bitumen-containing materials, comprising a trolley with a pivotally attached traction handle, a heat-insulated casing on the trolley and a semicylindrical tank placed in it with a loading window, a lid and a water-removing pipe at the top, an outlet crane and a drain tray in the discharge area, with a working shaft inside, located along the longitudinal the axis of this semi-cylindrical tank and placed in the thrust bearings and sealing units on its front and rear end walls and equipped with mixing opasti; by three phase-connected and equal in current load groups of electric heaters located uniformly on the outer surface of the circumferential wall of a semicylindrical tank, a heating temperature sensor loaded into the semicylindrical tank of the material components, as well as an electric motor located on the trolley, the drive shaft of which is connected through a gearbox and kinematic connection with the transmission link on the working shaft, and the control system panel, which includes a three-phase power supply, an electrical protection device electric heaters against short circuit, apparatus for protecting the motor from overload and short circuit, the first apparatus for turning on electric heaters, the second and third apparatus for reversing the electric motor and rotating the working shaft, respectively, clockwise (forward) and counterclockwise (back), the first and second starting blocks , the first input of the first of which is connected to the output of the electric heater protection device, the second and third inputs, respectively, with the START-1 and STOP-1 buttons, the fourth input - with the sensor output temperature, and the output is with the input of the first switching apparatus, the first input of the second starting block is connected to the output of the motor protection device, the second and third inputs are respectively with the first (manual) and second (automatic) outputs of the mode switch, the fourth and fifth inputs, respectively with the START-2 and STOP-2 buttons, the sixth and seventh inputs, respectively, with the FORWARD and BACK buttons, and the first and second outputs - with the inputs of the second and third electric motor reversing devices, respectively [2].

This installation is the closest to the invention in technical essence and the achieved result.

However, this installation also has certain disadvantages.

Firstly, there are no monitoring tools and information on the failure of electric heaters, therefore, timely intervention to eliminate malfunctions is impossible, as a result of which the heating intensity of a semi-cylindrical tank decreases and the heating of the components loaded into this tank slows down, which negatively affects the quality of the preparation of bitumen-containing materials, as well as on the reliability and efficiency of the installation.

Secondly, the temperature sensor is equipped with a device without a measuring scale, as a result of which there is no possibility of visual monitoring of changes in the heating temperature of components in a semi-cylindrical tank, which worsens the conditions of service and operation of the installation.

Thirdly, there are no means of monitoring and information on reaching the intermediate temperature for heating the components, after which it is possible to turn on the electric drive of the working shaft drive with mixing blades, therefore they are forced to determine this by frequently opening the lid and inspecting the contents in a semi-cylindrical container, which significantly increases the complexity worsens service conditions; accuracy of readiness determination is not guaranteed.

Fourth, there are no means to automatically ensure an inertial run-out of the working shaft with mixing blades, as a result of which, if this requirement is not observed, frequent breakdowns and emergency situations occur, which significantly reduces the reliability and efficiency of the installation.

Fifth, due to the lack of monitoring tools and information on achieving an intermediate temperature for heating components, short-term test starts of the working shaft drive with mixing blades in manual mode are often performed prematurely, resulting in severe overloads and breakdowns in the kinematic nodes, which reduces reliability and efficiency installation work.

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Sixthly, due to the lack of means to automatically ensure an inertial run-out of the working shaft with mixing blades, they are forced to automatically change the direction of rotation of the working shaft with mixing blades manually by influencing the corresponding ones in order to avoid sudden jerks and breakdowns of the heated components buttons, which increases the complexity, does not exclude operational errors, worsens the conditions of service, reduces reliability and efficiency the efficiency of the installation, the required accuracy of the technological process and the achievement of high quality preparation of bitumen-containing materials are not guaranteed.

The objective of the invention is to reduce the complexity, improve the service conditions and the quality of preparation of bitumen-containing materials, increase the reliability and efficiency of the installation, as well as expand its functional and technological capabilities and applications.

This problem is solved due to the fact that in the proposed installation for the preparation of bitumen-containing materials containing a trolley with a pivotally attached traction handle, a thermally insulated body on the trolley and a semicylindrical tank placed in it with a loading window, a lid and a water-removing nozzle at the top, an outlet valve and a drain tray in the zone unloading, with a working shaft inside, located along the longitudinal axis of this tank and placed in the thrust bearings and sealing units on its front and rear end walls and equipped with mixing paddles; by three phase-connected and equal in current load groups of electric heaters located uniformly on the outer surface of the circumferential wall of a semicylindrical tank, a heating temperature sensor loaded into the semicylindrical tank of the material components, as well as an electric motor located on the trolley, the drive shaft of which is connected through a gearbox and kinematic connection with the transmission link on the working shaft, and the control system panel, which includes a three-phase power supply, an electrical protection device electric heaters against short circuit, apparatus for protecting the motor against overload and short circuit, the first apparatus for turning on electric heaters, the second and third apparatus for reversing the electric motor and rotating the working shaft, respectively, clockwise (forward) and counterclockwise (back), first and second starting blocks , the first input of the first of which is connected to the output of the electric heater protection device, the second and third inputs, respectively, with the START-1 and STOP-1 buttons, the fourth input - with the sensor output and the temperature, and the output - with the input of the first switching apparatus, the first input of the second starting block is connected to the output of the motor protection device, the second and third inputs, respectively, with the first (manual) and second (automatic) outputs of the mode switch, the fourth and fifth inputs, respectively with the START-2 and STOP-2 buttons, the sixth and seventh inputs, respectively, with the FORWARD and BACK buttons, and the first and second outputs - with the inputs of the second and third devices for reversing the motor, respectively, in accordance with by taking into each phase of the power supply circuits of electric heaters, individual sensors for monitoring the load current equal to the sum of the operating currents of the corresponding group of electric heaters are included, while the output of each control sensor is connected to the corresponding signaling device of operability of electric heaters of a certain group, taking into account the provision of timely information on taking immediate measures; semi-cylindrical capacity electric heaters are equipped with a temperature sensor and an indicator of maximum permissible temperature on their shells, while the output of the temperature sensor is connected to an additional fifth input of the first start-up block, and an maximum temperature detector is connected to the second additional output of this block, taking into account notifications about measures taken to automatically prevent thermal destruction mentioned electric heaters; the heating system of the semi-cylindrical tank is equipped with an indicator for reaching an intermediate temperature of heating the material components loaded into this tank and it is connected to an additional third output of the first start-up unit and an additional eighth input of the second start-up unit, taking into account timely notification of the achievement of the intermediate temperature, automatic unlocking and the possibility of first in manual mode, trial short-term forced, and then automatic mode e prolonged for a given program periodically reversing mixings of components while heating them, as well as providing overtravel working shaft with stirring blades in both modes of operation.

The temperature sensor is located in a sleeve mounted on the front end wall of a semi-cylindrical tank, and its lower part is located inside this tank at the level of the outlet valve, and its internal cavity is filled with a sealant, for example industrial oil, with high thermal conductivity and the possibility of ensuring full contact with the sensitive part of the sensor taking into account improved reliability and increased accuracy of measuring the temperature of the heated material.

The temperature sensor is located in the hole of the sleeve, fixed with its opposite end part on the outer surface of the circumferential wall of a semicylindrical tank with the possibility of ensuring tight contact between the sensitive section of the temperature sensor and the shell of one of the electric heaters operating under the same conditions, passing through a perpendicular through hole in the lower part of this sleeve.

The first starting block includes five logical elements AND, four logical elements

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OR, a logical element OR NOT, four logical elements NOT, an element of an adjustable time delay AND to a pause to stop heating a semi-cylindrical tank and showing a device with a measuring scale for the temperature of heating the material in this tank, an indicator of the actual value of the heating temperature of this material, an intermediate setting device and a setpoint generator temperature values, measuring and command inputs, as well as the first and second outputs, and the first input of this unit is connected to the first input of the first element And; the second input of the block is with the first input of the first OR element, the output of which is connected to the second input of the first AND element; the third input of the block is through the first element NOT with the third input of the first AND element, the output of which is connected to the second input of the first OR element, the command input of the indicating device and the first inputs of the second, third, fourth and fifth AND elements; the fourth input of the block is with the measuring input of the indicating device, the first command output of which is connected to the first input of the third OR element and through the third element NOT to the second input of the third AND element, and the second command output is connected to the first input of the fourth OR element and the first input of the OR element NOT whose output is connected to the second input of the fourth AND element; the fifth input of the block - with the second input of the fourth OR element and the first input of the second OR element, the output of which is connected to the second input of the second AND element; the first output of the block is with the second input of the third OR element, through the fourth element NOT with the second input of the fifth AND element and the output of the fourth AND element, the third input of which is connected to the output of the third OR element; the second output of the block is with the second inputs of the second OR element and the OR-NOT element, the output of the second AND element, the third input of which is connected to the output of the second element NOT; the third output of the block - with the output of the third element And; the output of the time delay element 11 is connected to the input of the second element NOT and the third input of the third OR element, and its input to the third input of the fourth OR element and the output of the fifth AND element, the third input of which is connected to the output of the fourth OR element.

The second starting block includes fifteen logical elements AND, eleven logical elements OR, five logical elements OR, NOT, four logic elements NOT, an element of adjustable delay time 12 for inertial coasting of the working shaft, an element of adjustable delay time 13 of the duration of the reverse rotation of the working shaft, and a counter with a setter of the required number of reverse inclusions, and the first input of this block is connected to the first inputs of the first, sixth, ninth, twelfth and fifteenth AND elements; the second input of the block with the first input of the fifth and eleventh AND elements; the third input of the block is with the second input of the first AND element, the output of which is connected to the first input of the first OR element and the first inputs of the second, third, seventh and thirteenth AND elements; the fourth input of the block - with the first input of the sixth OR element and the second input of the fifth OR element, the output of which is connected to the third input of the first AND element; the fifth input of the block - with the first inputs of the third and fifth OR-NOT elements, as well as with the first input of the first OR-NOT element, the output of which is connected to the fourth input of the first AND element; the sixth block input - with the second input of the fifth AND element, the output of which is connected to the first input of the fifth OR element; the seventh input of the block is with the second input of the tenth AND element, the output of which is connected to the first input of the ninth OR element; the eighth block input - with the fifth input of the first AND element and the second inputs of the sixth, ninth, twelfth and fifteenth AND elements; the first output of the block is with the first inputs of the seventh OR element and the fourth OR-NOT element, and also through the first element NOT with the first input of the fourth OR element and the output of the sixth AND element, the third input of which is connected to the output of the fifth OR element, and its fourth input with the output of the second element OR-NOT; the second output of the block is with the first inputs of the second OR-NOT element and the eleventh OR element, through the third element NOT with the first input of the eighth OR element, and the second output of the block is connected to the output of the twelfth AND element, the third and fourth inputs of which are connected to the outputs of the ninth element OR and the fourth element OR NOT; the third and fourth inputs of the ninth AND element are connected to the outputs of the seventh OR element and the third OR-NOT element respectively, and its output is connected to the second inputs of the seventh OR element and the fourth OR-NOT element, as well as the first inputs of the third OR element, the fourth and eighth elements AND; the third and fourth inputs of the fifteenth AND element are connected to the outputs of the eleventh OR element and the fifth OR-NOT element respectively, and its output is connected to the second inputs of the third and eleventh OR elements and the second OR-NOT element, as well as the first inputs of the tenth and fourteenth AND elements; the second input of the third AND element is connected to the output of the third OR element, and its output through the time delay element 13 is connected to the second inputs of the eighth and fourteenth AND elements; the second input of the fourth AND element is connected to the output of the fourth OR element, and its output - with the first input of the second OR element, the second input of the fourth OR element and the third input of the second OR-NOT element; the second input of the tenth AND element is connected to the output of the eighth OR element, and its output is connected to the third input of the fourth element OR NOT; the second input of the eighth OR element and the second input of the second OR element, the output of which through the time delay element 12 is connected to the second inputs of the second AND element, the third and fifth elements OR NOT; the output of the sixth OR element is connected to the second input of the seventh AND element, and its second input is with the output of the seventh AND element and the second input of the fifth OR element, the third input is with the output of the fourteenth AND element and through the fourth element NOT with

- 3 015261 the second input of the thirteenth element And; the output of the tenth OR element is connected to the third input of the thirteenth AND element, and its first input - with the output of the thirteenth AND element and the second input of the ninth OR element and its second input - with the output of the eighth AND element and through the second element NOT with the third input of the seventh AND element; the first counter input is connected to the master, the second input to the output of the second AND element, and the output to the second input of the first OR-NOT element and the third inputs of the third and fifth OR-NOT elements.

Based on the above data and comparison of the claimed object with an analogue and prototype, it is seen that the proposed technical solutions meet the criterion of inventive step and are new, and their industrial applicability is confirmed by the detailed description below of the constructive implementation of the proposed installation and the principle of its operation.

In FIG. 1 shows a General view of the proposed installation for the preparation of bitumen-containing materials, in FIG. 2 - structural embodiment of the mount of the temperature sensor of the heated components in a semi-cylindrical tank, in FIG. 3 - constructive implementation of the attachment point of the temperature sensor for monitoring the maximum permissible temperature on the shell of electric heaters of a half-cylinder capacity, in FIG. 4 is a structural diagram of a control system of an installation; FIG. 5 is a functional logic diagram of the starting block of electric heaters of a semi-cylindrical tank, in FIG. 6 is a functional logic diagram of the starting block of the working shaft drive electric motor with mixing blades.

The proposed installation for the preparation of bitumen-containing materials contains a trolley 1 with a pivotally attached traction handle 2, a heat-insulated casing 3 on the trolley and a semicylindrical tank 4 with a loading window 5, a cover 6 and a water-removing pipe 7 at the top, an outlet valve 8 and a drain tray 9 in zone 10 unloading, with a working shaft 11 inside, located along the longitudinal axis 12 of a half-cylindrical tank and placed in the thrust bearings 13, 14 and sealing units 15, 16 on its front 17 and rear 18 end walls and is equipped with mixing paddles 19, three phase-connected and equal in current load groups of electric heaters 20.1, ..., 20.p, 21.1, ..., 21.p, 22.1, ..., 22.p located uniformly on the outer surface the circumferential wall 23 of the semicylindrical tank, the heating temperature sensor 24 loaded into the semicylindrical tank of the material components, as well as the electric motor 25 located on the trolley, the drive shaft 26 of which is connected through a gearbox 27 and kinematic connection 28 with the transmission link 29 on the working shaft 11, and the system console 30 management Ia, which includes a source of three-phase power supply, apparatus 32 for protecting electric heaters against short circuit, apparatus 33 for protecting the electric motor against overload and short circuit, first apparatus 34 for turning on electric heaters, second 35 and third 36 apparatus for reversing turning on the electric motor and rotating the working shaft, respectively, clockwise arrow (forward) and counterclockwise (back), the first 37 and second 38 start blocks, the first input of the first 37 of which is connected to the output of the protection device 32, the second and third inputs - with respectively, with buttons 39 START-1 and 40 STOP-1, the fourth input - with the output of the temperature sensor 24, and the output - with the input of the first apparatus 34, the first input of the second start-up unit 38 is connected to the output of the protection device 33, the second and third inputs are respectively, with the first (manual) and second (automatic) outputs of the switch 41 operating modes, the fourth and fifth inputs, respectively, with the buttons 42 START-2 and 43 STOP-2, the sixth and seventh inputs, respectively, with the buttons 44 FORWARD and 45 BACK, and first and second outputs - with inputs of the second 35 and third, respectively 36 of the reversing unit is turned on.

In each phase of the power supply circuits of electric heaters, individual sensors 46.1, 46.2 are included,

46.3 load current control 1 f. _s 1 p. ₂ , 1 p. ₃ , equal to the sum of the operating currents of the corresponding group of electric heaters 1 f. 1 = 120.1 + ... 120.P, 1 f. 2 = 121.1 + ... b1.n, 1 f. 3 = 122.1 + .. L2.P and equal to each other 1 f. 1 = 1 f. 2 = 1 f. ₃ , while the output of each control sensor is connected to the corresponding signaling device 47.1, 47.2,

47.3 operability of electric heaters of a certain group, taking into account the provision of timely information on taking immediate measures in case of deviations from the norm.

Such a technical solution allows to improve service conditions and significantly increase the reliability and efficiency of the installation.

Electric heaters of a semi-cylindrical tank are equipped with a temperature sensor 48 for monitoring and an indicator 49 of the maximum permissible temperature T1 on their shells, while the output of the temperature sensor 48 is connected to an additional fifth input of the first start-up block 37, and the signaling device 49 is connected to the second additional output of this block taking into account the critical position warning and automatically preventing thermal destruction of said electric heaters.

The heating system for a semi-cylindrical tank is equipped with an alarm 50 to achieve an intermediate temperature for heating the material components loaded into this tank, and it is connected to an additional third output of the first start-up unit 37 and the eighth input of the second start-up unit 38, taking into account timely notification of the achievement of the intermediate temperature, automatically

- 4 015261 releasing the lock and providing the possibility of first performing in the manual mode trial short-term forced and then automatic mode-long periodically reversed mixing of the components with their simultaneous heating, as well as providing an inertial run-out of the working shaft with mixing blades in both modes work.

The proposed implementation of the structural diagram of the control system of the installation with the specified additions makes it possible to automate the process of heating and mixing the contents in a semi-cylindrical tank in the required functional and technological sequence in the first and second starting blocks.

The temperature sensor 24 is located in the sleeve 51, mounted on the front end wall 17 of the semi-cylindrical tank 4, and its lower part is located inside this tank at the level of the outlet valve 8 and its internal cavity 52 is filled with a seal 53, for example, industrial oil, with high thermal conductivity and the possibility of providing full contact with the sensitive portion of the sensor 24, taking into account the improvement of reliability and increase the accuracy of measuring the temperature of the heated material.

The temperature sensor 48 is placed in the hole 54 of the sleeve 55, fixed with its opposite end part on the outer surface of the circumferential wall 23 of the semi-cylindrical tank 4 with the possibility of ensuring tight contact of the sensitive section of the temperature sensor 48 directly with the shell of one of the electric heaters operating under the same conditions, for example 20.1, passing through perpendicular to a through hole 56 at the bottom of this sleeve.

This technical solution can significantly improve the accuracy of temperature measurement on the shell of electric heaters.

The first start-up block 37 includes logic elements 57, 58, 59, 60, 61 AND, logic elements 62, 63, 64, 65 OR, logic element 66 OR NOT, logic elements 67, 68, 69, 70 NOT, element 71 adjustable time delays 11 for a slight decrease in the achieved set temperature of the heating of the components and indicating device 72 with a measuring scale 73 of the temperature of the heating of the material in this tank, a pointer 74 of the actual value of the heating temperature of this material, setpoint 75 of intermediate T2 and setpoint 76 of the required T3 temperature values s, measuring 77 and command 78 inputs, as well as the first output 79 for the command to reach the set value of the intermediate temperature T2 and the second output 80 for the command to reach the set value of the required temperature T3, the first input of this unit being connected to the first input of the And 57 element; the second input of the block is with the first input of the OR element 62, the output of which is connected to the second input of the AND element 57; the third input of the block is through element 67 NOT with the third input of the element 57 AND, the output of which is connected to the second input of the element 62 OR, the command input 78 of the indicating device 72 and the first inputs of the elements 58, 59, 60, 61 AND; the fourth input of the block is with the measuring input 77 of the indicating device 72, the first command output 79 is connected to the first input of the OR element 64 and through the element 69 NOT to the second input of the 59 AND element, and the second command output 80 is connected to the first input of the OR element 65 and the first input element 66 OR NOT, the output of which is connected to the second input of element 60 AND; the fifth input of the block is with the second input of the OR element 65 and the first input of the OR element 63, the output of which is connected to the second input of the AND element 58; the first output of the block - with the second input of the element 64 OR, through the element 70 NOT with the second input of the element 61 AND and the output of the element 60 AND, the third input of which is connected to the output of the element 64 OR; the second output of the block is with the second inputs of the elements 63 OR and the element 66 OR NOT and the output of the element 58 AND, the third input of which is connected to the output of the element 68 NOT; the third output of the block - with the output of the element 59 And; the output of the element 71 time delay 11 is connected to the input of the element 68 NOT and the third input of the element 64 OR, and its input is the third input of the element 65 OR and the output of the element 61 AND, the third input of which is connected to the output of the element 65 OR.

This implementation of the functional logic of the first launch unit made it possible to fully realize, according to a given program, the technological progress of heating the components loaded into the semi-cylindrical container for the preparation of bitumen-containing roofing materials: visual control of the change in the temperature of the heating of the components; automatic fixation of the achievement of an intermediate value of the heating temperature of the components, corresponding to the possibility of first performing a short-term test, and then working prolonged mixing, as well as the automatic generation of permission commands to enable the working shaft drive in this connection; automatic fixation of reaching the maximum permissible temperature on the shell of electric heaters and their automatic shutdown, taking into account the prevention of thermal damage; automatic fixation of the achievement of the required temperature for heating the components and automatic maintenance of this temperature during mixing.

Thanks to this technical solution, the elimination of operational errors, the prevention of emergency situations, the improvement of service conditions, the increase in the reliability and efficiency of the installation, and the improvement of the quality of material preparation are guaranteed.

Proposed Use in First Launch Block 37 of Variable Delay Time Element 71

- 5 015261 changes And for a slight decrease in the achieved set temperature for heating the components and its proposed connection, it was possible from one temperature sensor 24 and one indicating device 72 to fix two temperature values: intermediate and necessary in the heated components, and also automatically maintain the required temperature, which reduces element base, simplifies and reduces the cost of manufacturing the installation.

The second starting block 38 includes elements 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95 And, elements 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106 OR, elements 107, 108, 109, 110, 111 OR NOT, elements 112, 113, 114, 115 NOT, element 116 time delay! 2 on the inertial run-out of the working shaft, element 117 time delays! 3 of the duration of one reverse turning on of the working shaft and counter 118 with a setpoint 119 of the required number of reverse switching, and the first input of this block is connected to the first inputs of elements 81, 86, 89, 92, 95 And; the second input of the block with the first inputs of elements 85, 91 AND; the third input of the block is with the second input of the AND element 81, the output of which is connected to the first input of the OR element 96 and the first inputs of the elements 82, 83, 87, 93 AND; the fourth input of the block is with the first input of the OR element 101 and the second input of the OR element 96, the output of which is connected to the third input of the AND element 81; the fifth input of the block - with the first inputs of the elements 109, 111 OR-NOT, as well as with the first input of the element 107 OR-NOT, the output of which is connected to the fourth input of the element 81 AND; the sixth input of the block is with the second input of the AND element 85, the output of which is connected to the first input of the OR element 100; the seventh input of the block is with the second input of the AND element 91, the output of which is connected to the first input of the OR element 104; the eighth block input - with the fifth input of the 81 And element and the second inputs of the elements 86, 89, 92, 95 And; the first output of the block - with the first inputs of the OR element 102 and the 110 OR-NOT element, as well as through the 112 element with the first input of the 99 OR element and the output of the 86 AND element, the third input of which is connected to the output of the 100 OR element, and its fourth input - with the output of the element 108 OR NOT; the second output of the block is with the first inputs of the OR element 108 and the OR element 106, through the element 114 NOT with the first input of the OR element 103, and the second output of the block is connected to the output of the AND element 92, the third and fourth inputs of which are connected to the outputs of the element, respectively 104 OR and element 110 OR NOT; the third and fourth inputs of the AND element 89 are connected to the outputs of the OR element 102 and the OR-NOT element 109, respectively, and its output is connected to the second inputs of the OR element 102 and the OR-NOT element 110, as well as the first inputs of the OR element 98 and the elements 84, 88 AND; the third and fourth inputs of the AND element 95 are connected to the outputs of the OR element 106 and the OR element 111, respectively, and its output is connected to the second inputs of the OR elements 98, 106 and the OR element 108, as well as the first inputs of the AND elements 90, 94; the second input of the AND element 83 is connected by the output of the OR element 98, and its output through the time delay element 117! 3 - with the second inputs of the elements 88, 94 AND; the second input of the AND element 84 is connected to the output of the OR element 99, and its output is connected to the first input of the OR element 97, the second input of the OR element 99 and the third input of the OR element 108; the second input of the AND element 90 is connected to the output of the OR element 103, and its output is to the third input of the OR element NOT 110, the second input of the OR element 103 and the second input of the OR element 97, the output of which through the time delay element 116! 2 is connected to the second inputs element 82 AND and elements 109, 111 OR NOT; the output of the OR element 101 is connected to the second input of the AND element 87, and its second input - with the output of the AND element 87 and the second input of the OR element 100 and its third input - with the output of the OR element 94 and through the 115 element NOT with the second input of the AND element 93; the output of the OR element 105 is connected to the third input of the 93 AND element, and its first input is the output of the 93 AND element and the second input of the OR element 104 and its second input is the output of the 88 AND element and through the 113 element is NOT the third input of the AND element 87; the first input of the counter 118 is connected to the setter 119, the second input is connected to the input of the AND element 82, and the output is connected to the second input of the OR-NOT element 107 and the third inputs of the 109, 111 OR-NOT elements.

This embodiment of the functional-logical diagram of the second launch block made it possible to fully implement the control program for the working shaft drive electric motor with mixing blades according to a given program: the ability to control the electric motor only after reaching the preliminary temperature for heating the components in a semi-cylindrical tank, automatically ensuring an inertial run-out of the working shaft with mixing blades after each shutdown of the electric motor, regardless of its operation in the manual m or automatic modes, short-term periodic periodic motor control in manual operation in the initial mixing stage, long-reverse periodic motor control in automatic mode at the final mixing stage with a given rhythm of reversal and a given number of reverse inclusions, electric motor control in manual mode when unloading finished bitumen-containing material.

The use of an adjustable element 116 of the time delay! 2 made it possible, depending on the components used, to select the necessary time for reversing the working shaft with mixing blades, which greatly expands the functional and technological capabilities of the installation and helps to improve the quality of the preparation of bitumen-containing materials, and the use of an adjustable element 117 of the time delay! 3 made it possible to select the optimal time for the inertial run-out of the working shaft with mixing blades, thanks which eliminates sudden jerks and breakdowns, provides a smooth start and stop, guarantees high reliability and efficiency of the installation.

The proposed installation works as follows.

First, with the lid 6 open, through the window 5, the necessary components are loaded to prepare a certain material in the semi-cylindrical tank 4.

After closing the loading window 5 with the cover 6, the motor protection device 32 and the motor protection device 33 are turned on, as a result of which signals appear at the first inputs of the first 37 and second 38 launch blocks, as well as at the first inputs of the elements 57, 81, 86, 89, 92 95 I.

After making sure that the installation is ready for operation, act on the START button 39, as a result of which a signal appears at its output, the second input of the first start-up unit 37 and the first input of the OR element 62.

The presence of a signal at one of the inputs of the OR element 62 causes a signal to appear at its output, the second input and output of the 57 AND element, the second input of the OR element 62 (remembered), the first inputs of the elements 58, 59, 60, 61 AND, as well as the command input 78 indicating instrument 72.

Since the loaded material initially has a temperature measured by the sensor 24, lower than the required temperature T3 set by the setter 76, a signal appears at the first output 79 of the indicating device 72, the input of the element 69 NOT, the first input and output of the element 64 OR, the second input and output of the element 60 And, the input of the element 70 is NOT, the second input of the element 64 OR (remembered), the first output of the starting block 37 and the input of the first switching device 34, resulting in electric heaters 20.1, ..., 20.p, 21.1, ..., 21. p, 22.1, ..., 22.p are connected to a source 31 of three-phase electro nutrition.

Since all electric heaters are serviceable, a load current of 1 f is formed in each phase power supply circuit. ₁ = 1 p. ₂ = 1 p. ₃ , corresponding to the sum of the working currents of certain groups of electric heaters 1 f. 1 = 1 ₂₀ .ι + ... 1 ₂₀ .p, 1 f. ₂ = 1 ₂ ι.ι + ..1 ₂ ι. _η , 1 f. ₃ = 1 ₂₂ .ι + ... 1 ₂₂ . _n , and at the outputs of the sensors 46.1, 46.2, 46.3 of monitoring these currents, signals appear on the corresponding signaling devices 47.1, 47.2, 47.3, informing about the full operability of all electric heaters and the possibility of accelerated heating of the loaded components in a semi-cylindrical tank, as well as ensuring high quality preparation of roofing bitumen-containing materials.

Intensive heating of the circumferential wall 23 of the semi-cylindrical tank 4 and the components loaded into it begins.

If for any reason at least one of the electric heaters fails (a spiral burns out, a break in the wiring, an unreliable connecting contact, etc.), then in the corresponding phase, for example, the first, the load current becomes less than the sum of the operating currents of all this groups of electric heaters, i.e. 1 f. 1 <1 ₂₀ . ₁ + ... 1 ₂₀ . _n , as a result of which the signal at the output of the sensor 46.1 disappears and the signaling device 47.1 is turned off, informing about the need for immediate immediate troubleshooting. Due to this, the service conditions are improved, situations of delayed heating of the loaded components in a semi-cylindrical tank are timely prevented and a significant increase in the time to reach the required temperature, reduction in the reliability and efficiency of the installation, as well as the quality of preparation of bitumen-containing materials are prevented.

When the intermediate heating temperature of the components visually monitored on the measuring scale 72 by means of a pointer (arrow) 74 coincides with the value of the setpoint 75, the signal disappears at the first input of the indicating device 72, the first input of the OR element 64 and the input of the element NOT.

The disappearance of the signal at the input of the element 68 does NOT cause a signal at its input, the second input and output of the element 59 AND, the third output of the first start-up block, at the eighth input of the second start-up block, the fifth input of the element 81 AND, the second inputs of the elements 86, 89, 92, 95 And the input of the signaling device 50, informing about the permission and the possibility of turning on the drive of the working shaft while continuing to warm up the components.

With a short jerk action on the BACK button 44, a signal appears at its output, the sixth input of the second start-up unit 38, the second input and output of the AND element 85, the first input and output of the OR element 100, the third input and output of the 86 AND element, the input of the 112 element NOT, the first input of the OR element 102, the first input of the OR-NOT element 110 (prohibition of the command back), the first output of this block and the input of the second switching device 35, as a result of which the electric motor 25 is turned on, connected to the three-phase power supply source 31 and its drive shaft 26 through red the vector 27, the kinematic connection 28 and the transmission link 29 starts to rotate clockwise (forward) the working shaft 11 and the blades 19, which rotate and begin to mix the loaded components warmed up in the semi-cylindrical tank 4 to an intermediate temperature T2.

The presence of a signal at one of the inputs of the OR element 102 causes the appearance of a signal at its output, the third input and output of the 89 AND element, the second input of the 110 element OR NOT (re-inhibit the decay command), the second input of the OR element 102 (remembered), the first inputs of the elements 84, 88 AND and element 98 OR.

After a slight pause, the action on the 44 FORWARD button stops and the signal disappears on

- 7 015261 its output, the sixth input of the second starting block 38, the second input and output of the AND element 85, the first input and output of the OR element 100, the third input and output of the 89 element, the first input of the OR element 102, the first input of the OR element 110 and input element 110 is NOT.

The disappearance of the signal at the input of element 110 does NOT cause a signal to appear at its output, the first input and output 99 OR, the second input of element 84 AND, the second output of element 99 OR (remembered), the third input of element 108 OR-NOT (forward command prohibition), the first the input and output of the element 97 OR and the input of the element 116 time delay 12 on the inertial coast of the working shaft with mixing blades.

After the time delay 12 has expired, the working shaft with the mixing blades smoothly stops, and a signal appears at the output of element 116, which is fed to the second inputs of the AND element 82 and the OR elements 109, 111.

The presence of a signal at one of the inputs of the element 109 OR NOT causes the disappearance of the signal at its output, the fourth input and output of the element 89 AND, the second input of the element 102 OR (memory reset), the second input of the element 101 OR NOT (reset the prohibition of the command back), the first input of the element 88 AND, the first input and output of the element 98 OR, the first input and output of the element 84 AND, the second input and output of the element 99 OR (memory reset), the third input of the element 108 OR-NOT (collecting the prohibition of the command forward), the first input and the output of the element 97 OR, the input and output of the element 116 of the delay 12, the second inputs of the element ent 82 And and elements 109, 111 OR NOT.

With a short jerk action on the BACK button 45, a signal appears at its output, the seventh input of the second start-up unit 38, the second input and output of the 91 AND element, the first input and output of the OR element 104, the third input and output of the 92 AND element, the input of the 114 element NOT, the first input of the OR element-108 (prohibition of forward command), the first input of the OR element 106, the second output of the second starting block 38 and the input of the third switching device 36, as a result of which the electric motor 25 is turned on and the working shaft 11 with the blades 19 starts to rotate counterclockwise (backward), and similarly the contents stirred to a semicylindrical tank 4 in the opposite direction, improving the quality of the manufacturing operation.

The presence of a signal at one of the inputs of the OR element 106 causes a signal to appear at its output, the third input and output of the 95 And element, the second input of the OR element 106 (remembered), the second input of the OR element 108 OR NOT (repeated prohibition of the forward command), the first inputs of the elements 90, 94 AND and the second input and output element 98 OR.

Similarly, after a slight pause, the effect of the BACK button 45 stops and the signal disappears at its output, the seventh input of the second start-up unit 38, the second input and output of the 91 AND element, the first input and output of the 104 OR element, the third input and output of the 92 AND element, input element 114 NOT and the first inputs of element 108 OR NOT and element 106 OR.

The disappearance of the signal at input 114 does NOT cause a signal to appear at its output, the first input and output of the OR element 103, the second input and output of the 90 AND element, the second input of the OR element 103 (remembered), the third input of the OR element 110 (NOT forbidden) , the second input and output of the OR element 97 and the input of the time delay element 116 12.

After the time delay 12 has elapsed, the working shaft with mixing blades also stops smoothly, and a signal appears at the output of element 116, which is fed to the second inputs of element 82 and elements 109, 111 OR NOT.

The presence of a signal at one of the inputs of the element 111 OR NOT causes the signal to disappear at its output, at the fourth input and output of the element 95 AND, the second input of the element 106 OR (memory reset), the second input of the element 108 OR NOT (collection of forward command prohibition) , the first input of the element 94 AND, the second input and output of the element 98 OR, the first input and output of the element 90 AND, the third input of the element 110 OR NOT (collecting the prohibition of the command back), the second input and output of the element 97 OR, the input and output of the element 116 time delays 12, the second inputs of the element 82 AND and elements 109, 111 OR NOT.

Thus, the next start of the electric motor is possible, regardless of the direction of rotation of its drive shaft and operating mode, only after a complete inertial run-out and a smooth stop of the working shaft with mixing blades, which eliminates breakdowns and guarantees reliability and high efficiency of the installation.

Such short-term reversible periodic switching on of the electric motor are performed until the condition of the components in the semi-cylindrical tank is prepared for continuous reversible mixing.

After such readiness, the switch 41 of the operating modes is set to position A (automatic), as a result of which a signal appears at its second output, the third input of the second start-up unit 38 and the second input of the 81 element I.

When the START-2 button 42 is briefly exposed, a signal appears at its output, the fourth input of the second start-up unit 38, the first input of the OR element 101, the second input and output of the 96 OR element, the third input and output of the 81 element, the first input of the OR element 96 ( memorized) and the first inputs of elements 82, 83, 87, 93 I.

The presence of a signal at the first input of the OR element 101 causes a signal to appear at its output,

- 8 015261 second input and output of element 87 AND, second input of element 101 OR (remembered), second input and output of element 100 OR, third input and output of element 86 AND, input of element 112 NOT, first inputs of element 102 OR and element 110 OR -NOT, the first output of the second starting block 83 and the input of the second switching apparatus 35, as a result of which, as described above, the electric motor 25 is connected and clockwise (forward) rotation of its drive shaft 26 and the working shaft 11 with blades 19, and also begins reverse mixing n specified program has already been partially preheated and pre-prepared components.

The presence of a signal at one of the inputs of the OR element 102 causes the appearance of a signal at its output, the third input and output of the 89 AND element, the second input of the OR element 102 (remembered), the second input of the OR-NOT element 110 (reverse command prohibition), the first inputs of the elements 84 , 88 AND, the first input and output of the element 98 OR, the second input and output of the element 83 AND and the input of the element 117 time delay 13, after which the countdown of the duration of one reverse inclusion.

After the time delay 13 has elapsed, a signal appears at the output of element 117, the second input of element 94 AND, the second input and output of element 88 AND, the input of element 113 NOT, the second input and output of element 105 OR, the third input and output of element 93 AND, the first input of element 105 OR (remembered), the second input and output of the element 104 OR (preparation of the command back) and the third input of the element 92 I.

The presence of a signal at the input of element 113 does NOT cause the signal to disappear at its output, the third input and output of element 87 AND, the second input and output of element 101 OR (memory reset), the second input and output of element 100 OR, the third input and output of element 86 AND, the input of the element 112 NOT, the first inputs of the OR element 102 and the OR-NOT element 110, the first output of the second starting block 38 and the input of the second switching device 35, as a result of which the motor 25 is turned off, but its drive shaft 26 and the working shaft 11 s stirring lopas yours 19 continue to rotate by inertia.

The absence of a signal at the input of element 112 does NOT cause a signal at its output, the first input and output of element 99 OR, the second input and output of element 84 AND, the second input of element 99 OR (remembered), the first input and output of element 97 OR and the input of element 116 time delay 12, after which the countdown begins for the inertial run-out of the drive shaft 26 of the electric motor 25, as well as the working shaft 11 with mixing blades 19.

After the disappearance of the time delay 12 and the smooth stop of the drive shaft 26 of the electric motor 25 and the working shaft 11 with the mixing blades 19, a signal appears at the output of the element 116, the second inputs of the elements 109, 111 OR NOT, the second input and output of the element 82 AND and the input of the counter 118 .

The presence of a signal at the second input of counter 118 causes the registration of the first reverse turning on of the electric motor and mixing of the contents in a half-cylinder capacity clockwise.

The presence of a signal at one of the inputs of the element 109 OR NOT causes the disappearance of the signal at its output, the fourth input and output of the element 89 AND, the second input of the element 110 OR NOT (collecting the prohibition of the command back), the second input and output of the element 102 OR (memory reset ), the first input of the element 88 AND, the first input and output of the element 84 AND, the second input and output of the element 99 OR (memory reset), the third input of the element 108 OR NOT, the first input and output of the element 97 OR, the input and output of the delay element 116 time 12, the second input and output of the element 82 AND, the second input of the counter 118 (reset signal), the second inputs of the elements 109, 111 OR NOT, the first input and output of the element 98 OR, the second input and output of the element 83 AND, the input and output of the element 117 time delay 13, the second inputs of the elements 88, 94 I.

This completes the first mixing cycle clockwise (forward) of the components in the semi-cylindrical tank.

However, the absence of signals at the inputs of the element 110 OR NOT and saving the signals at the output of the element 93 AND and all inputs of the element 92 AND automatically causes the signal to appear on its output, the first input of the element 108 OR NOT (prohibition of the forward command), the first input of the element 106 OR , the input of the element 114 NOT, the second output of the second starting block 38 and the input of the third switching apparatus 36, as a result of which, similarly to the above, the electric motor 25 is connected to the three-phase power supply 31, but the rotation of its drive shaft 26 and the working Ala 11 with the blades 19 will occur counterclockwise (backward), and the mixing of the components in a semi-cylindrical tank will be carried out in the opposite direction compared to the previous reverse cycle, which improves the quality of the preparation of bitumen-containing materials.

The presence of a signal at the first input of the OR element 106 causes the appearance of a signal at its output, the third input and output of the 95 And element, the second input of the OR element 106 (remembered), the second input of the OR element-108 (prohibition of forward command), the first inputs of the elements 90, 94 And, the second input and output of the element 98 OR, the second input and output of the element 83 AND and the input of the element 117 time delay 13, after which the countdown of the duration of the second reverse inclusion.

After the delay time 13, a signal appears at the output of element 117, the second input

- 9 015261 of the element 88 AND and the second input and output of the element 94 AND, the input of the element 115 is NOT, the third input of the element 101 OR.

The presence of a signal at the input of element 115 does NOT cause the signal to disappear at its output, the second input and output of the 93 And element, the second input and output of the OR element 105 (memory reset), the second input and output of the OR element 104, the third input and output of the 92 AND element, the first inputs of the element 108 OR NOT (reset the prohibition of the command forward) and the element 106 OR, the input of the element 114 NOT, the second output of the second start-up block 38 and the input of the third switching device 36, as a result of which the motor 25 is turned off similarly to the above, but its drive shaft 26 and workers shaft 11 with mixing blades 19 also continues to rotate by inertia.

The presence of a signal at one of the inputs of the OR element 101 causes a signal to appear at its output, the second input and output of the AND element 87, the second input and output of the OR element 101 (remembered), the second input and output of the OR element 100, the third input of the AND element 86 (preparation teams ahead).

The presence of a signal at one of the inputs of the OR element 103 causes the appearance of a signal at its output, the second input and output of the 90 AND element, the second input of the OR element 103 (remembered), the third input of the OR 110 element or NOT, the second input and output of the OR element 97, the input element 116 of the time delay 12, after which the countdown begins for the inertial coasting of the drive shaft 26 of the electric motor 25, as well as the working shaft 11 with mixing blades 19.

After the delay time 12 and the smooth stop of the drive shaft 26 of the electric motor 25 and the working shaft 11 with the mixing blades 19 expire, a signal appears at the output of element 116, the second inputs of elements 109, 111 OR, the second input and output of element 82 AND, and the second input of counter 118 .

The presence of a signal at the second input of the counter 118 causes the registration of the second reverse turning on of the electric motor and mixing the contents in a half-cylinder capacity counterclockwise.

The presence of a signal at one of the inputs of the element 111 OR NOT causes the disappearance of the signal at its output, the fourth input and output of the element 95 AND, the second input of the element 108 OR NOT (reset the prohibition of the command forward), the second input and output of the element 106 OR (memory reset ), the first input of the element 94 AND, the first input and output of the element 90 AND, the second input and output of the element 103 OR (memory reset), the third input of the element 110 OR NOT, the second input and output of the element 97 OR, the input and output of the delay element 116 time 12, the second input and output of the element 82 AND, the second input of the counter 118 (reset signal used to read), the second input elements 109, 111 NOR.

On this, the second working cycle of mixing counterclockwise (backward) of the components in the semi-cylindrical tank is completed.

After this, the next third mixing work cycle is automatically turned on again clockwise (forward) of the components in a half-cylinder capacity, since the memory on the OR element 101 is saved, and the presence of signals at all inputs of the And 86 element and the absence of signals at all inputs of the element 108 OR NO.

Then everything repeats automatically similarly to the above when continuing the heating of the components in a semi-cylindrical tank with their simultaneous mixing.

Upon reaching the required temperature T3 for heating the components, corresponding to the value of the setpoint 76, showing the device 72 in the first start-up unit 37, a signal appears on the second input 80 of this device and the first inputs of the OR-NOT element 66 and the OR element 65.

The presence of a signal at one of the inputs of the element 65 OR NOT causes the disappearance of the signal at its output, the second input and output of the element 60 AND, the second input and output of the element 64 OR (memory reset), the input of the element 70 NOT, the first output of the first launch unit 37 and the input of the first switching device 34, as a result of which all electric heaters 20.1 + ... 20.p, 21.1 + ... 21.p, 22.1 + ... 22.p are turned off and the heating of the semi-cylindrical tank 4 and the components mixing in it stops.

The disappearance of the signal at the input of element 70 does NOT cause the appearance of a signal at its output and the second input of element 61 I.

The presence of a signal at the first input of the OR element 65 causes the appearance of a signal at its output, the third input and output of the And element 61, the third input of the OR element 65 (remembered) and the input of the element 71 of the time delay 11, after which the countdown begins, sufficient to slightly reduce the necessary temperature heating components, for example 1 ° C.

After the time delay 11 has elapsed, a signal appears at the output of element 71, the input of element 68 NOT, the third input and output of elements 64 OR, the third input and output of element 60 AND, the second input and output of element 64 OR (remembered), the input of element 70 NOT, first the output of the first starting block 37 and the input of the first switching device 34, as a result of which all electric heaters are turned on again and the heating of the semi-cylindrical tank is resumed and the mixing components are heated.

Thus, by automatically turning on and off, the required temperature T3 is precisely maintained, which improves the quality of the preparation of bitumen-containing materials.

- 10 015261

If for some reason it turns out that the temperature on the shells of the electric heaters reaches the maximum permissible T1, then a signal appears at the output of the temperature sensor 48, the fifth input of the first start-up unit 37, the second input of the OR element 65, the first input and output of the 63 element, the second input and the output of the AND element 58, the second input of the OR element 63 (remembered), the second input of the OR 66 element, NOT, the second output of the first start-up unit 37 and the input of the signaling device 49, informing about the situation and warning about the possibility of thermal damage heaters.

The presence of a signal at the second input of the element 66 OR NOT causes the disappearance of the signal at its output, the second input and output of the element 60 AND, the second input of the element 64 OR (memory reset), the input of the element 70 NOT, the first output of the first starting block 37 and the input of the first device 34 switching, as a result of which all electric heaters are also switched off in a timely manner, automatically preventing their thermal destruction, which increases the reliability and efficiency of the installation.

The absence of a signal at the input of element 70 does NOT cause a signal to appear at its output and the second input of element 61 I.

The presence of a signal at one of the inputs of the OR element 65 causes a signal to appear at its output, the third input and output of the AND element 61, the third input of the OR element 65 (remembered) and the input of the AND time delay element 71, after which the countdown begins, sufficient to reduce the maximum permissible temperature on the shell of electric heaters, for example also at 1 ° C.

After the time delay AND expires, a signal appears at the output of element 71, the input of element 68 NOT, the third input of element 64 OR.

The presence of a signal at the input of element 68 does NOT cause the signal to disappear at its output, the third input and output of element 58 AND, the second input and output of element 63 OR (memory reset), the second input of element 66 OR-NOT, the second output of the first launch unit 37 and input the detector 49, informing about a decrease in temperature on the shells of electric heaters is less than the maximum permissible.

The presence of a signal at the third input of the OR element 64 causes the appearance of a signal at its output, the third input and output of the AND element 60, the second input of the OR element 64 (remembered), the input of the element NOT, the first output of the first starting block 37 and the input of the first switching device 34, as a result, all electric heaters are turned on again and the heating of the semi-cylindrical tank and heating of the mixing components are resumed.

The presence of a signal at the input of element 70 does NOT cause the signal to disappear at its output, the second input and output of the AND element 61, the third input and output of the OR element 65 (memory reset), the input and output of the AND time delay element 71, the third input of the OR element 64, and the input element 68 is NOT.

Upon completion of the required number of reverse cycles of mixing the components corresponding to the preset value of the setpoint 119, a signal appears at the output of counter 118, the second input of element 107 OR NOT and the third inputs of elements 109, 111 OR NOT.

The appearance of the signal at the second input of the element 107 OR NOT causes the disappearance of the signal at its output, the fourth input and output of the element 81 AND, the first input and output of the element 96 OR (memory reset), the first input and output of the element 82 AND, the first inputs and outputs of the elements 83, 84, 88, 93 And, after which the reverse control system of the drive of the working shaft with blades in automatic operation returns to its original state, and the motor is turned off.

Before unloading the prepared bitumen-containing roofing material, the operating mode switch 41 is set to position P (manual), the exhaust valve 8 is opened, and then, using the 44 FORWARD button, the electric motor 25 is turned on similarly to the above, the drive shaft 26 of which and the working shaft 11 with blades 19 begin to rotate along clockwise (forward), as a result of which the prepared bitumen-containing material enters through the outlet valve 8 and the drain tray 9 into a previously prepared container (not shown).

After the discharge is completed, the electric motor 25 is turned off and the outlet valve 8 is closed.

Loading into a semi-cylindrical container a new batch of components, as well as their heating and mixing, is carried out similarly to the above.

Based on the foregoing, it is seen that the proposed installation for the preparation of bitumen-containing materials compares favorably with known similar installations and has the following advantages:

firstly, the use of sensors and signaling devices for monitoring the load current in each phase power supply circuit of three equal groups of electric heaters and their proposed connection makes it possible in case of failure of at least one of them to inform in a timely manner of immediate measures to be taken, to prevent undesirable deceleration of heating loaded into a semi-cylindrical tank components, which significantly improves the conditions of service, helps to increase the reliability and efficiency of the installation, as well as increase the quality of the quality of the preparation of bitumen-containing materials;

secondly, the use of a temperature sensor and an alarm to control the maximum permissible temperature on the shells of electric motors and their proposed connection made it possible to automatically turn them off and inform about timely warning when this temperature is reached

- 11 015261 rotation of their thermal destruction, which also improves service conditions, significantly increases the reliability and efficiency of the installation;

thirdly, the proposed constructive implementation of the attachment point of the temperature sensor made it possible to ensure tight contact of its sensitive section directly with the shell of the electric heater, which improves the accuracy of measuring the maximum permissible temperature on this shell and helps to ensure timely response to prevent thermal damage;

fourthly, the proposed location and structural design of the temperature sensor attachment node made it possible to ensure full contact of its sensitive section with components loaded into the semi-cylindrical container, thereby increasing the reliability and accuracy of measuring the temperature of their heating, which helps to improve the quality of preparation of bitumen-containing materials;

fifthly, the use of a time delay element 11 in the first start-up block and its proposed connection made it possible, when using one temperature sensor with a indicating device, to record two indications of increasing temperature: intermediate T2 and the required temperature T3 of the heating components loaded into the semi-cylindrical tank, as well as automatic maintenance reached temperature T3, which significantly reduces the number of elements in this block, simplifies and cheapens the installation;

sixth, the use of an indicator to achieve an intermediate temperature T2 for heating components in a semi-cylindrical tank and its proposed connection made it possible to exclude the possibility of turning on the drive of the working shaft with mixing blades until this temperature is reached, which eliminates breakdowns and emergency situations, significantly increases the reliability and efficiency of the installation;

seventh, the use of a showing device in the first start-up block with an intermediate setter T2 and a setpoint setter for the required temperature T3 for heating the components in a semi-cylindrical tank and the proposed connection of its first and second outputs made it possible to select the temperature regimes depending on the various components used, which significantly expands the functional and technological capabilities of the installation, as well as its scope;

eighth, the use of a time delay element 12 in the second start-up block for the inertial run-out of the working shaft with mixing blades and its proposed connection made it possible to ensure its smooth start-up and smooth stop, as well as to eliminate breakdowns and emergency situations, which significantly increases reliability and operational efficiency installation;

ninth, the use of a time delay element 13 in the second start-up block for the duration of one reverse switching of the working shaft with mixing blades and its proposed connection made it possible to automate the process of reverse control of the working shaft drive electric motor according to a predetermined program, which reduces the complexity, eliminates operational errors, improves service conditions, increases the reliability and efficiency of the installation, and also improves the quality of the preparation of bitumen-containing materials;

tenth, the use of adjustable time delays 12 in the inertial coast and 13 for the duration of one reverse switching of the working shaft with mixing blades in the second start-up block made it possible, depending on the components used, to select exactly the necessary time modes, which greatly expands the functional and technological capabilities of the installation, as well as the scope of its application;

eleventh, the use of the number of reverse inclusions of the working shaft with mixing blades in the second start-up block of the counter with the setter and their proposed connection made it possible to timely stop automatically the reverse-periodic mixing of the components loaded into the semi-cylindrical tank according to the specified program, and also made it possible to set the required number of reversible inclusions depending on the components used, which also significantly expands the functional and technological capabilities of the installation, as well as its scope;

twelfth, the use of a mode switch in the control system and the proposed connection of its first (manual) and second (automatic) outputs made it possible, upon reaching an intermediate temperature T2, to heat the components in a semi-cylindrical tank, first in manual mode, forcibly carry out a test short-term reverse mixing of them, and then after their sufficient preparation, already in automatic mode, according to the specified program, continuous periodic reverse mixing, thanks to it reduces the complexity and eliminates operational errors, which significantly improves service conditions, increases the reliability and efficiency of the installation, and also improves the quality of the preparation of bitumen-containing materials.

The proposed installation is simple to manufacture, convenient to maintain, reliable in operation, has wide functional and technological capabilities, provides high-quality preparation of various bitumen-containing and other similar materials, therefore, it can be found

- 12 015261 wide application in the construction and repair of buildings, subways and roads, as well as in other industries.

Claims (5)

CLAIM 1. Installation of preparation of bitumen-containing materials, containing a trolley with a hinged traction handle, insulated casing on the trolley and a semi-cylindrical container placed in it with a loading window, a lid and a moisture removing pipe at the top the longitudinal axis of this container and placed in the support bearings and sealing assemblies on its front and rear end walls and equipped with mixing blades; three phase-switched and equal for current load groups of electric heaters located evenly on the outer surface of the circumferential wall of the semi-cylindrical container, a heating temperature sensor of the material components loaded in the semi-cylindrical container, and a motor mounted on the cart, the drive shaft of which is connected through a gearbox and kinematic connection with a transmission link on the working shaft, and the control system control panel, which includes a source of three-phase power supply, an electrical protection device short circuit electric heaters, motor overload and short circuit protection device, first electric heaters turning on device, second and third reverse motor turning on devices and working shaft rotation, respectively, clockwise forwards and counterclockwise, first and second starting blocks, first input of the first of which are connected to the output of the device of protection of electric heaters, the second and third inputs, respectively, with buttons PUSK-1 and STOP-1, the fourth input - with the output of the sensor t temperature, and the output - with the input of the first switching device, the first input of the second starting block is connected to the output of the motor protection apparatus, the second and third inputs - respectively with the first (manual) and second (automatic) outputs of the operating mode switch, the fourth and fifth inputs - with buttons PUSK-2 and STOP-2, the sixth and seventh entrances - with the FORWARD and BACK buttons respectively, and the first and second outputs - with the inputs of the second and third reversing devices of the electric motor, respectively, characterized in that Each phase of the power supply circuits of electric heaters includes individual sensors controlling the load current equal to the sum of operating currents of the respective group of electric heaters, and the output of each monitoring sensor is connected to a corresponding alarm indicator of the electrical heaters of a certain group, taking into account the provision of timely information on taking immediate measures; electric heaters of a semi-cylindrical container are equipped with a temperature sensor control and a signaling device of the maximum permissible temperature on their shells, while the output of the temperature sensor is connected to an additional fifth input of the first start-up unit, and the signaling device of the maximum allowable temperature - with the second additional output of this unit taking into account the notification of measures taken to automatically prevent thermal destruction mentioned electric heaters; The heating system of the semi-cylindrical tank is equipped with a signaling device to reach the intermediate heating temperature of the material components loaded in this tank, and it is connected to an additional third output of the first starting unit and an additional eighth input of the second starting unit, taking into account timely notification of the achievement of the intermediate temperature, automatic unlocking and ensuring the possibility first in manual test mode forcibly, and then in automatic mode In the case of long-term, according to a given program, periodically reversible mixing of components with their simultaneous heating, as well as on the provision of inertial running out of the working shaft with mixing blades in both modes of operation. 2. Installation according to claim 1, characterized in that the temperature sensor is placed in a sleeve fixed on the front end wall of the semi-cylindrical container, and its lower part is located inside this container at the level of the outlet valve and its internal cavity is filled with a sealant, for example, industrial oil, high thermal conductivity and the ability to ensure full contact with the sensitive area of the sensor, taking into account improving the reliability and improving the accuracy of measuring the temperature of the heated material. 3. Installation according to claim 1, characterized in that the thermal sensor is placed in the hole of the sleeve, fixed with its opposite end part on the outer surface of the circumferential wall of the semi-cylindrical container with the ability to ensure tight contact with the sensitive section of the thermal sensor directly with the shell of one of the electric heaters running under the same conditions, passing through a perpendicular through hole at the bottom of this sleeve. 4. Installation according to claim 1, characterized in that the first starting block includes five logical elements AND, four logical elements OR, logical element OR NOT, four logical elements NOT, an element of adjustable delay time 11 to pause the termination of heating semi-cylindrical - 13 015261 capacity and showing a device with a measuring scale of the material heating temperature in this capacity, an indicator of the actual heating temperature of this material, an intermediate setting device and a necessary temperature setting indicator, measuring and command inputs, as well as the first and second outputs, and the first input the block is connected to the first input of the first element AND; the second input of the block - with the first input of the first element OR, the output of which is connected to the second input of the first element AND; the third input of the unit is through the first element NOT with the third input of the first element AND, the output of which is connected to the second input of the first element OR, the command input of the indicating device and the first inputs of the second, third, fourth and fifth elements AND; the fourth block input - with the measuring input of the indicating device, the first command output of which is connected to the first input of the third element OR and through the third element NOT to the second input of the third element AND, and the second command output connected to the first input of the fourth element OR and the first input of the element OR- NOT, the output of which is connected to the second input of the fourth element AND; the fifth block input - with the second input of the fourth OR element and the first input of the second OR element, the output of which is connected to the second input of the second AND element; the first output of the block - with the second input of the third element OR, through the fourth element NOT with the second input of the fifth element AND and the output of the fourth element AND, the third input of which is connected to the output of the third element OR; the second output of the block - with the second inputs of the second element OR and the element OR — NOT, the output of the second element AND, the third input of which is connected to the output of the second element NOT; the third output of the block - with the release of the third element And; the output of the time delay element 11 is connected to the input of the second element NOT and the third input of the third element OR, and its input to the third input of the fourth element OR and the output of the fifth element AND, the third input of which is connected to the output of the fourth element OR. 5. Installation under item 1, characterized in that the second starting block includes fifteen logical elements AND, eleven logical elements OR, five logical elements OR NOT, four logical elements NOT, an element of adjustable delay time 12 on the inertial coasting of the working shaft , an element of adjustable time delay 13 of the duration of the reverse rotation of the working shaft and a counter with a setpoint generator of the required number of reverse inclusions, the first input of this block connected to the first inputs of the first, sixth, ninth, two adtsatogo and fifteenth of the AND; the second input block - with the first input of the fifth and eleventh elements And; the third input of the block with the second input of the first element And, the output of which is connected to the first input of the first element OR and the first inputs of the second, third, seventh and thirteenth elements AND; the fourth block input with the first input of the sixth OR element and the second input of the fifth OR element, the output of which is connected to the third input of the first AND element; the fifth block input - with the first inputs of the third and fifth elements OR-NOT, as well as with the first input of the first element OR-NOT, the output of which is connected to the fourth input of the first element AND; the sixth block input - with the second input of the fifth element AND, the output of which is connected to the first input of the fifth element OR; the seventh block input - with the second input of the tenth element AND, the output of which is connected to the first input of the ninth element OR; the eighth block input - with the fifth input of the first element I and the second inputs of the sixth, ninth, twelfth and fifteenth elements I; the first output of the block - with the first inputs of the seventh element OR and the fourth element OR — NOT, and also through the first element NOT with the first input of the fourth element OR and the output of the sixth element AND, the third input of which is connected to the output of the fifth element OR, and its fourth input - with the release of the second element OR NOT; the second output of the block - with the first inputs of the second element OR-NOT and the eleventh element OR, through the third element NOT with the first input of the eighth element OR, and the second output of the block is connected to the output of the twelfth element AND, the third and fourth inputs of which are connected to the outputs of the ninth, respectively the OR element and the fourth element OR NOT; the third and fourth inputs of the ninth element AND are connected to the outputs of the seventh element OR and the third element OR-NOT, respectively, and its output - with the second inputs of the seventh element OR and the fourth element OR-NOT, as well as the first inputs of the third element OR, fourth and eighth elements AND; The third and fourth inputs of the fifteenth element AND are connected to the outputs of the eleventh element OR and the fifth element OR NIE, respectively, and its output is connected to the second inputs of the third and eleventh elements OR and the second element OR NOT and the first inputs of the tenth and fourteenth elements AND; the second input of the third element AND is connected with the output of the third element OR, and its output through the time delay element 13 is connected with the second inputs of the eighth and fourteenth elements AND; the second input of the fourth element AND is connected with the output of the fourth element OR, and its output with the first input of the second element OR, the second input of the fourth element OR and the third input of the second element OR NOT, the second input of the tenth element AND connected to the output of the eighth element OR, and its output is with the third input of the fourth element OR NOT, the second input of the eighth element OR and the second input of the second element OR, the output of which is connected via the delay element 12 to the second inputs of the second element AND, the third and fifth elements OR- NOT; the output of the sixth element OR is connected to the second input of the seventh element AND, and its second input - with the output of the seventh element AND and the second input of the fifth element OR, the third input - with the output of the fourteenth element AND and through the fourth element NOT with the second input of the thirteenth element AND; the output of the tenth element OR is connected to the third input of the thirteenth element AND, and its first input - 14 015261 with the output of the thirteenth element AND and the second input of the ninth element OR and its second input with the output of the eighth element AND and through the second element NOT with the third input of the seventh element AND; the first input of the counter is connected to the setting device, the second input is connected to the output of the second element AND, and the output is connected to the second input of the first element OR NOT and the third inputs of the third and fifth elements OR NOT.