Automatic discharging system and control method for finished product silo of factory mixing equipment

Abstract

The present invention discloses an automatic discharging system and control method for a finished product silo of a factory mixing equipment. The automatic discharging system includes a voltage-stabilized power supply and a material level detection system and a vehicle detection system connected to the voltage-stabilized power supply. The vehicle detection system includes a material gate control circuit and a vehicle detection control circuit connected in parallel. The vehicle detection control circuit includes a first detection control main circuit. The output end of the first detection control main circuit is connected to a first relay power supply circuit, a first vehicle sensor circuit, a second vehicle sensor circuit and a first material gate sensing circuit connected in parallel. The material level detection system includes a material level detection circuit. The material level detection circuit includes a material level sensing branch circuit, a first material gate relay circuit and a batching circuit for controlling a batching mechanism. The automatic discharging control method adopts a vehicle detection control method and combines the material level detection system to detect the presence of a vehicle, so as to realize automatic discharging of the vehicle from the silo. The discharging system and control method realize more efficient and safe discharging control of the finished product silo.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, and in particular to an automatic discharging system and a control method for a finished product silo of a mixing plant. Background Art

[0002] The current discharging system of finished products or storage bins of field mixing equipment adopts manual button switch mode, which uses manual control of the opening or closing of the finished material door to realize discharging. The existing discharging method has the following disadvantages:

[0003] 1. This type of silo discharges in a single way. During continuous production, the operator needs to keep pressing the control button manually, which has a high labor intensity. Take a 500-type water stabilization station as an example: the rated production capacity is 500 tons / hour. If a 50-ton truck is used for continuous transportation, 10 trucks are loaded per hour, an average of one truck every 6 minutes. The finished product silo discharges 3 tons of material each time, and the operator needs to manually press the button switch 15 times within one minute, not including the manual bell operation after each full truck, which is easy to fatigue.

[0004] 2. Frequent pressing of the button switch will also shorten the service life of the switch, increase the failure rate and maintenance cost. In terms of overall use, it not only reduces work efficiency and causes fatigue to the staff, but also affects the continuity of construction production.

[0005] 3. Lack of necessary protection functions, easy to operate incorrectly, and there are great safety hazards. For example: in the continuous production process, due to operational errors, the storage bin may overflow with excessive materials, causing damage to the transport vehicles receiving the materials; or operational errors (including errors of the transport vehicle driver and the mixing station operator) may cause the transport vehicles entering the station to receive materials to be damaged by the discharged materials, or even injure people, etc., and dangerous situations may occur from time to time. Summary of the invention

[0006] The object of the present invention is to provide an automatic discharging system for a finished product silo of a factory mixing equipment, which realizes automatic discharging of the silo to a vehicle and realizes monitoring of its own material level.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is:

[0008] An automatic material discharge system for finished product silos of a factory mixing equipment comprises a voltage-stabilized power supply and a batching mechanism, the voltage-stabilized power supply is connected with a material level detection system and a vehicle detection system, the vehicle detection system comprises a material door control circuit and a vehicle detection control circuit arranged in parallel, the vehicle detection control circuit comprises a first detection control main circuit, the input end of the first detection control main circuit is connected to the voltage-stabilized power supply through a rectifier device and a first material level master switch;

[0009] The output end of the first detection control main circuit is connected to a first relay power supply circuit, a first vehicle sensor circuit, a second vehicle sensor circuit, and a first material door sensor circuit which are arranged in parallel;

[0010] The material level detection system comprises a material level detection circuit, and the material level detection circuit comprises a material level sensing branch circuit, a first material gate relay circuit and a batching circuit for controlling a batching mechanism.

[0011] Preferably, the material door control circuit includes a first manual switch circuit, a first automatic switch circuit and a first material door control main circuit, and the first manual switch circuit and the first automatic switch circuit are connected in parallel and in series with the first material door control main circuit;

[0012] The first manual switch circuit and the first automatic switch circuit are respectively connected in series with the first manual switch circuit and the first automatic switch circuit, and the first material door control main circuit is connected in series with a bin door control solenoid valve.

[0013] Preferably, a second material level master switch is connected in series in the first detection control main circuit; a first relay is connected in series in the first relay power supply circuit; and a first vehicle detection sensor is connected in series in the first vehicle sensor circuit.

[0014] Preferably, a second vehicle detection sensor and a second relay are connected in series in the second vehicle sensor circuit; and a first time relay electric shock switch and a third relay are connected in series in the first material door sensing circuit.

[0015] Preferably, a material level detection sensor and a fourth relay are connected in series in the material level sensing branch circuit;

[0016] A fourth relay electric shock switch is connected in series in the batching circuit, and the fourth relay controls the fourth relay electric shock switch; the material level detection sensor is installed at 80% of the silo capacity scale in the finished product silo of the factory mixing equipment.

[0017] Preferably, the first material gate relay circuit includes a first material gate main circuit and an oscillator circuit, and a first relay electric shock switch and a second relay electric shock switch are connected in series in the first material gate main circuit. The first relay electric shock switch is controlled by the first relay power supply circuit, and the second relay electric shock switch is controlled by the second vehicle sensor circuit.

[0018] Preferably, the oscillator circuit comprises a first oscillator branch and a second oscillator branch, and the first oscillator branch and the second oscillator branch are arranged in parallel;

[0019] A first time oscillator and a first time oscillator switch are connected in series in the first oscillator branch, and a second time oscillator and a second time oscillator switch are connected in series in the second oscillator branch.

[0020] The present invention also aims to provide a method for automatically discharging materials from a finished product silo of a mixing plant, which method achieves more efficient and safe discharging control of the finished product silo.

[0021] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is:

[0022] An automatic material discharge control method for a finished product silo of a plant mixing equipment, using an automatic material discharge system for a finished product silo of a plant mixing equipment, specifically includes the following;

[0023] The vehicle detection control method is used to detect the arrival of the vehicle, so as to realize the automatic unloading of the vehicle from the silo, and the automatic placement of the finished product silo is realized in combination with the material level detection system, thereby realizing the automatic discharge control of the finished product silo.

[0024] Preferably, the vehicle detection control method comprises the following steps:

[0025] Step A1, close the first material level main switch, connect the rectifier device to the vehicle detection system, and convert the current of the voltage-stabilized power supply into direct current through the rectifier device, so as to prepare for the start-up of the vehicle detection system;

[0026] Step A2, closing the second material level main switch, energizing the first relay and the first vehicle detection sensor, and the first relay controls the first relay electric shock switch to close;

[0027] Step A3: If the vehicle is in place, proceed to step A4; if the vehicle is not in place, proceed to step A6;

[0028] Step A4, the first vehicle detection sensor and the second vehicle detection sensor sense vehicle information, the second relay is energized, the second relay controls the second relay electric contact switch to close, and the oscillator circuit is energized at this time, and after the oscillator circuit is energized, step A5 is entered;

[0029] Step A5, after the oscillator circuit is powered, it starts to work and uses the generated pulse signal to close the first time relay electric switch; after the first time relay electric switch is closed, the third relay in the first material door sensing circuit is powered; after the third relay is powered, it controls the first automatic switch to close, thereby realizing the automatic opening of the door of the finished product silo;

[0030] Step A6, the second vehicle detection sensor controls the second relay to be powered off, controls the second relay electric shock switch to be disconnected, the oscillator circuit is powered off, and the time oscillator in the oscillator circuit stops working;

[0031] Then the third relay is powered off, and after the third relay is powered off, it controls the first automatic switch to disconnect, and the door opening process of the finished product silo stops.

[0032] Preferably, the detection method of the material level detection system comprises the following steps:

[0033] Step B1, after the material level detection circuit is powered on, when the material level detection sensor detects that the material has reached the warning position, the material level detection sensor controls the fourth relay to be powered;

[0034] Step B2, after the fourth relay is energized, the fourth relay contact switch in the batching circuit is disconnected, and the batching mechanism stops batching.

[0035] The beneficial effects of the present invention are:

[0036] The automatic discharging system for the finished product silo of the factory mixing equipment in the present invention is more intelligent in discharging the slot silo, and realizes automatic and manual multi-functions. It has better environmental protection and economy, and avoids pollution and waste caused by overflow of the silo. It reduces the labor intensity of the operator, avoids repeated switching, and improves the operational safety during use. It also improves the intrinsic safety of the equipment, and avoids accidents such as overflow and hitting the car. After using the automatic discharging system for the finished product silo of the factory mixing equipment summarized in the present invention, the discharging of the silo is safer and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a circuit connection diagram of the automatic discharging system of the finished product silo of the plant mixing equipment.

[0039] Figure 2 It is a circuit connection diagram of the material level detection system.

[0040] Figure 3 It is a circuit connection diagram of the vehicle detection system.

[0041] Figure 4 It is the structural principle block diagram of the vehicle detection system.

[0042] Figure 5 It is the structural principle block diagram of the material level detection system. DETAILED DESCRIPTION

[0043] The present invention provides an automatic discharging system and control method for finished product silos of a plant mixing equipment. In order to make the purpose, technical scheme and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The present invention is described in detail below in conjunction with the accompanying drawings:

[0045] Example 1

[0046] Combination Figures 1 to 5 , an automatic discharging system for finished product silos of factory mixing equipment, including a voltage-stabilized power supply 1 and a batching mechanism, the voltage-stabilized power supply 1 is connected to a material level detection system 2 and a vehicle detection system 3.

[0047] The vehicle detection system 3 includes a material gate control circuit 4 and a vehicle detection control circuit 5 arranged in parallel. The vehicle detection control circuit 5 includes a first detection control main circuit 51. The input end of the first detection control main circuit 51 is connected to the voltage-stabilized power supply 1 through a rectifier device 11 and a first material level main switch 12.

[0048] The output end of the first detection control main circuit 51 is connected to a first relay power supply circuit 52 , a first vehicle sensor circuit 53 , a second vehicle sensor circuit 54 and a first material door sensor circuit 55 which are arranged in parallel.

[0049] The material level detection system 2 includes a material level detection circuit 6 , which includes a material level sensing branch circuit 61 , a first material gate relay circuit 62 and a batching circuit 63 for controlling a batching mechanism.

[0050] The material door control circuit 4 includes a first manual switch circuit 41, a first automatic switch circuit 42 and a first material door control main circuit 43. The first manual switch circuit 41 and the first automatic switch circuit 42 are connected in parallel and then connected in series with the first material door control main circuit 43.

[0051] A first manual switch 44 and a first automatic switch 45 are connected in series in the first manual switch circuit 41 and the first automatic switch circuit 42 , respectively. A bin door control solenoid valve 46 is connected in series in the first material door control main circuit 43 .

[0052] A second material level master switch 511 is connected in series in the first detection control main circuit 51 , a first relay 521 is connected in series in the first relay power supply circuit 52 ; and a first vehicle detection sensor 531 is connected in series in the first vehicle sensor circuit 53 .

[0053] The second vehicle detection sensor 541 and the second relay 542 are connected in series in the second vehicle sensor circuit 54; the first time relay electric shock switch 551 and the third relay 552 are connected in series in the first material door sensing circuit 55. The first vehicle detection sensor 531 and the second vehicle detection sensor 541 are vehicle detection sensors used to detect whether the vehicle is in place.

[0054] The material level sensing subcircuit 61 is connected in series with a material level detection sensor 611 and a fourth relay 612; the batching circuit 63 is connected in series with a fourth relay electric shock switch 631, and the fourth relay 612 controls the fourth relay electric shock switch 631. The material level detection sensor 611 is installed at 80% of the material bin capacity scale in the finished product bin of the factory mixing equipment.

[0055] The first material gate relay circuit 62 includes a first material gate main circuit 621 and an oscillator circuit 622. A first relay electric shock switch 623 and a second relay electric shock switch 624 are connected in series in the first material gate main circuit 621. The first relay electric shock switch 623 is controlled by the first relay power supply circuit 52, and the second relay electric shock switch 624 is controlled by the second vehicle sensor circuit 54.

[0056] The oscillator circuit 622 includes a first oscillator branch 601 and a second oscillator branch 602 , and the first oscillator branch 601 and the second oscillator branch 602 are connected in parallel.

[0057] A first time oscillator 603 and a first time oscillator switch 604 are connected in series in the first oscillator branch 601 , and a second time oscillator 605 and a second time oscillator switch 606 are connected in series in the second oscillator branch 602 .

[0058] Example 2

[0059] Combination Figures 1 to 5 , a method for automatically discharging materials from a finished product silo of a plant mixing equipment, using the above-mentioned automatic discharging system for the finished product silo of the plant mixing equipment, specifically includes the following;

[0060] Firstly, the vehicle detection control method is used to detect the arrival of the vehicle, so as to realize the automatic unloading of the vehicle from the silo, and the automatic discharging of the finished product silo is realized by combining with the material level detection system, thereby realizing the automatic discharging control of the finished product silo.

[0061] The vehicle detection control method comprises the following steps:

[0062] Step A1, close the first material level main switch 12, connect the rectifier 11 to the vehicle detection system, and convert the current of the voltage-stabilized power supply 1 into direct current through the rectifier 11, so as to prepare for the start-up of the vehicle detection system.

[0063] Step A2, closing the second material level main switch 511, the first relay 521 and the first vehicle detection sensor 531 are energized, and the first relay 521 controls the first relay electric shock switch 623 to close.

[0064] Step A3: After the vehicle is in place, proceed to step A4; if the vehicle is not in place, proceed to step A6;

[0065] In step A4, after the first vehicle detection sensor 531 and the second vehicle detection sensor 541 sense the vehicle information, the second relay 542 is energized, and the second relay 542 controls the second relay electric shock switch 624 to close, at which time the oscillator circuit 622 is energized; after the oscillator circuit 622 is energized, step A5 is entered.

[0066] Step A5, after the oscillator circuit 622 is energized, the oscillator circuit 622 starts working and uses the generated pulse signal to close the first time relay electric shock switch 551; after the first time relay electric shock switch 551 is closed, the third relay 552 in the first material door sensing circuit 55 is energized; after the third relay 552 is energized, it controls the first automatic switch 45 to close, thereby realizing the automatic opening of the warehouse door of the finished product warehouse.

[0067] Step A6, the second vehicle detection sensor 541 controls the second relay 542 to cut off the power, the second relay 542 controls the second relay electric shock switch 624 to turn off, and then the oscillator circuit 622 is powered off. After the oscillator circuit 622 is powered off, the time oscillator in the oscillator circuit 622 stops working.

[0068] After the time oscillator, the third relay 552 is de-energized, and after the third relay 552 is de-energized, the first automatic switch 45 is controlled to be disconnected, and the automatic opening process of the warehouse door of the finished product warehouse stops.

[0069] The detection method of the material level detection system includes the following steps: Step B1, after the material level detection circuit 6 is powered on, when the material level detection sensor 611 detects that the material has reached the warning position, the material level detection sensor 611 controls the fourth relay 612 to be powered.

[0070] Step B2: After the fourth relay 612 is energized, the fourth relay contact switch 631 in the batching circuit 63 is disconnected, and the batching mechanism stops batching.

[0071] The material level detection sensor 611 in the present invention is installed at 80% of the material bin capacity scale in the finished product bin of the factory mixing equipment. The reason is that when the material level detection sensor 611 detects that the material reaches the warning position, the fourth relay contact switch 631 in the batching circuit 63 is disconnected, and the batching mechanism stops batching. However, the conveyor belt mechanism between the batching mechanism and the finished product bin has materials batched by the batching mechanism, and the conveyor belt mechanism is rotating and transmitting all the time. The continuous transmission and rotation of the conveyor belt mechanism ensures the continuity of the rotation of the conveyor belt mechanism, and avoids excessive start and stop of the conveyor belt mechanism to affect the service life.

[0072] After the conveyor belt mechanism transports the remaining prepared finished materials to the finished product bin, the finished product bin is nearly full, ensuring that the finished product bin will not overflow.

[0073] Example 3

[0074] In the automatic discharging system of the finished product silo of the above-mentioned factory mixing equipment, a pulse circuit composed of a time relay is added to the switch control circuit of the silo door of the finished product silo (or a pulse circuit is formed by a timer in the PLC program). By adjusting the pulse width, the opening and closing time of the finished product storage silo door is automatically controlled.

[0075] In this system, when the material level in the finished product silo is detected by the material level detection sensor (the material level detection sensor is a very common device, which is a photoelectric diffuse reflective sensor) and reaches 80% of the silo volume (set according to the batching speed of different equipment), the batching mechanism (excluding the aggregate belt and mixing equipment) stops running to ensure that the stored material in the silo will not overflow. The material level detection system 2 is combined with the vehicle detection system to control the batching process, and can trigger the batching mechanism to automatically stop running when necessary.

[0076] When the equipment in the automatic discharge system of the present invention starts continuous production, the finished mixed material transport vehicle enters the material receiving area, and after the first vehicle detection sensor and the second vehicle detection sensor detect that the vehicle is in place, the automatic discharge function is activated, and the finished material bin automatically discharges the material, completing the loading of the vehicle with finished mixed materials. When the transport vehicle leaves the loading area, the first vehicle detection sensor and the second vehicle detection sensor turn off the power supply of the automatic switch device of the silo door, and the silo door is closed and locked. Wait for the next vehicle to arrive and receive the material, and this cycle is repeated for continuous production. At this time, the batching system is always working and feeding the finished material bin through the conveyor belt mechanism.

[0077] In special circumstances, the material receiving vehicle is delayed in arriving. At this time, the material level detection sensor will start and automatically control the batching mechanism (excluding the aggregate belt and mixing equipment) to stop running after the finished mixed material reaches the silo warning position to ensure that the silo does not overflow, and lock it at the same time until it returns to normal, and then the production process can be restarted. When cleaning or repairing the equipment, the automatic discharge function can be disabled using the conversion switch (manual / automatic). The storage silo door can be opened and closed manually.

[0078] The automatic discharging system for the finished product silo of the factory mixing equipment in the present invention is more intelligent in discharging the slot silo, and realizes automatic and manual multi-functions. It has better environmental protection and economy, and avoids pollution and waste caused by overflow of the silo. It reduces the labor intensity of the operator, avoids repeated switching, and improves the operational safety during use. It also improves the intrinsic safety of the equipment, and avoids accidents such as overflow and hitting the car. After using the automatic discharging system for the finished product silo of the factory mixing equipment summarized in the present invention, the discharging of the silo is safer and more efficient.

[0079] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0080] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A method for automatically discharging materials from a finished product silo of a mixing plant. It is characterized in that Adopt automatic discharging system for finished product silo of plant mixing equipment; The automatic material discharge system of the finished product silo of the factory mixing equipment includes a voltage-stabilized power supply and a batching mechanism, the voltage-stabilized power supply is connected to a material level detection system and a vehicle detection system, the vehicle detection system includes a material door control circuit and a vehicle detection control circuit arranged in parallel, the vehicle detection control circuit includes a first detection control main circuit, and the input end of the first detection control main circuit is connected to the voltage-stabilized power supply through a rectifier device and a first material level master switch; The output end of the first detection control main circuit is connected to a first relay power supply circuit, a first vehicle sensor circuit, a second vehicle sensor circuit, and a first material door sensor circuit which are arranged in parallel; The material level detection system includes a material level detection circuit, which includes a material level sensing branch circuit, a first material gate relay circuit and a batching circuit for controlling a batching mechanism; The material door control circuit comprises a first manual switch circuit, a first automatic switch circuit and a first material door control main circuit, and the first manual switch circuit and the first automatic switch circuit are connected in parallel and then connected in series with the first material door control main circuit; The first manual switch circuit and the first automatic switch circuit are respectively connected in series with a first manual switch and a first automatic switch, and the first material door control main circuit is connected in series with a bin door control solenoid valve; A second material level master switch is connected in series in the first detection control main circuit; a first relay is connected in series in the first relay power supply circuit; a first vehicle detection sensor is connected in series in the first vehicle sensor circuit; The second vehicle sensor circuit is connected in series with a second vehicle detection sensor and a second relay; the first material door sensor circuit is connected in series with a first time relay electric shock switch and a third relay; The material level sensing branch circuit is serially connected with a material level detection sensor and a fourth relay; A fourth relay electric shock switch is connected in series in the batching circuit, and the fourth relay controls the fourth relay electric shock switch; the material level detection sensor is installed at 80% of the silo capacity scale in the finished product silo of the factory mixing equipment; The first material gate relay circuit includes a first material gate main circuit and an oscillator circuit, a first relay electric shock switch and a second relay electric shock switch are connected in series in the first material gate main circuit, the first relay electric shock switch is controlled by the first relay power supply circuit, and the second relay electric shock switch is controlled by the second vehicle sensor circuit; The oscillator circuit comprises a first oscillator branch and a second oscillator branch, and the first oscillator branch and the second oscillator branch are arranged in parallel; A first time oscillator and a first time oscillator switch are connected in series in the first oscillator branch, and a second time oscillator and a second time oscillator switch are connected in series in the second oscillator branch; The automatic material discharge control method of the finished product silo of the plant mixing equipment includes the following: The vehicle detection control method is used to detect the vehicle's arrival, so as to realize the automatic unloading of the vehicle from the silo, and the automatic discharging of the finished product silo is realized by combining with the material level detection system, thereby realizing the automatic unloading control of the finished product silo; The vehicle detection control method comprises the following steps: Step A1, close the first material level main switch, connect the rectifier device to the vehicle detection system, and convert the current of the voltage-stabilized power supply into direct current through the rectifier device, so as to prepare for the start-up of the vehicle detection system; Step A2, closing the second material level main switch, energizing the first relay and the first vehicle detection sensor, and the first relay controls the first relay electric shock switch to close; Step A3: If the vehicle is in place, proceed to step A4; if the vehicle is not in place, proceed to step A6; Step A4, the first vehicle detection sensor and the second vehicle detection sensor sense vehicle information, the second relay is energized, the second relay controls the second relay electric contact switch to close, and the oscillator circuit is energized at this time, and after the oscillator circuit is energized, step A5 is entered; Step A5, after the oscillator circuit is powered on, it starts to work and uses the generated pulse signal to close the first time relay electric switch; after the first time relay electric switch is closed, the third relay in the first material door sensing circuit is powered on; after the third relay is powered on, it controls the first automatic switch to close, thereby realizing the automatic opening of the door of the finished product silo; Step A6, the second vehicle detection sensor controls the second relay to be powered off, controls the second relay electric shock switch to be disconnected, the oscillator circuit is powered off, and the time oscillator in the oscillator circuit stops working; Then the third relay is powered off, and after the third relay is powered off, it controls the first automatic switch to disconnect, and the door opening process of the finished product silo stops.

2. According to claim 1, a method for automatically discharging materials from a finished product silo of a mixing plant, It is characterized in that The detection method of the material level detection system comprises the following steps: Step B1, after the material level detection circuit is powered on, when the material level detection sensor detects that the material has reached the warning position, the material level detection sensor controls the fourth relay to be powered; Step B2, after the fourth relay is energized, the fourth relay contact switch in the batching circuit is disconnected, and the batching mechanism stops batching.

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