Refueling control circuit of diesel crusher

Abstract

The utility model discloses a refueling control circuit of a diesel crusher, which is characterized in that a first branch comprises a normally open contact of a circuit breaker QF, a stop button SB1, a start button SB2, a power-on delay disconnection contact of a time relay KT and a coil of a main loop contactor KM which are sequentially connected in series, and the start button SB2 is connected with the normally open contact of the main loop contactor KM in parallel; a coil of the time relay KT is connected in parallel between a power-on time-delay disconnection contact of the time relay KT and a coil of the main loop contactor KM, and a second branch is connected in parallel among the stop button SB1 and the start button SB2 of the first branch, the power-on time-delay disconnection contact of the time relay KT and the coil of the main loop contactor KM. The third branch comprises a power-on delay closing contact of a time relay KT and an alarm HL3 which are sequentially connected in series, the power-on delay closing contact of the time relay KT is connected with a normally open contact of an intermediate relay KA in parallel, and the alarm HL3 is connected with a coil of the intermediate relay KA in parallel.

Description

Technical Field

[0001] The utility model relates to the technical field of coal chemical industry, and particularly relates to a fuel adding control circuit for a diesel crusher. Background Art

[0002] In a coal screening and crushing site, a diesel generator is used as a power supply device for the crusher. Due to long-term operation, the diesel consumption is large, and the diesel generator needs to be refueled frequently. During the refueling process, since two people need to cooperate, one person stands on the fuel tanker and the other person stands on the fuel tank of the diesel generator. It takes two people to cooperate back and forth to complete refueling once. Sometimes, there are also events of fuel overflow in the fuel tank. The process is cumbersome and the efficiency is low, seriously affecting production. Content of the Utility Model

[0003] The purpose of the utility model is to provide a fuel adding control circuit for a diesel crusher.

[0004] The utility model is implemented by the following technical solutions: A fuel adding control circuit for a diesel crusher, which includes a main circuit, a first branch, a second branch, and a third branch;

[0005] The first branch includes a normally open contact of a circuit breaker QF, a stop button SB1, a start button SB2, a power-off delay break contact of a time relay KT, and a coil of a main circuit contactor KM, which are sequentially connected in series. The start button SB2 is paralleled with a normally open contact of the main circuit contactor KM. A coil of the time relay KT is paralleled between the power-off delay break contact of the time relay KT and the coil of the main circuit contactor KM. A fuel adding indicator light HL1 is paralleled with the coil of the main circuit contactor KM;

[0006] A second branch is paralleled between the stop button SB1, the start button SB2, the power-off delay break contact of the time relay KT, and the coil of the main circuit contactor KM of the first branch. The second branch includes a power supply normal indicator light HL2;

[0007] The second branch is paralleled with a third branch. The third branch includes a power-on delay close contact of the time relay KT and an alarm HL3, which are sequentially connected in series. The power-on delay close contact of the time relay KT is paralleled with a normally open contact of an intermediate relay KA. The alarm HL3 is paralleled with a coil of the intermediate relay KA.

[0008] Further, the main circuit includes a power supply, a normally open contact of a circuit breaker QF, a normally open contact of a main circuit contactor KM, and an oil pump. The power supply is electrically connected with the oil pump through the normally open contact of the circuit breaker QF and the normally open contact of the main circuit contactor KM in sequence.

[0009] Advantages of the present utility model: It can greatly save manpower and material resources. There is no need for staff to always stay in front of the fuel tank to monitor. When the fuel tank is full, it can automatically alarm and automatically stop the oil pump, preventing oil spillage; the setting time of the time relay KT can be flexibly set according to actual situations and can alarm when the fuel tank is full; the 24V power supply can be taken from the battery system of the diesel generator, which is convenient and practical. Brief Description of the Drawings

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] In the figure: main circuit 1, first branch 2, second branch 3, third branch 4, circuit breaker QF, refueling indicator light HL1, power supply normal indicator light HL2, main circuit contactor KM, time relay KT, intermediate relay KA, alarm HL3, start button SB2, stop button SB1, intermediate relay KA. Detailed Embodiments

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0014] As Figure 1 shown, the fuel filling control circuit of the diesel crusher includes a main circuit 1, a first branch 2, a second branch 3, and a third branch 4;

[0015] The first branch 2 includes a normally open contact of the circuit breaker QF, a stop button SB1, a start button SB2, a power-on delay-off contact of the time relay KT, and a coil of the main circuit 1 contactor KM, which are connected in series in sequence. The start button SB2 is paralleled with a normally open contact of the main circuit 1 contactor KM. A coil of the time relay KT is paralleled between the power-on delay-off contact of the time relay KT and the coil of the main circuit 1 contactor KM. A refueling indicator light HL1 is paralleled with the coil of the main circuit 1 contactor KM;

[0016] The stop button SB1, start button SB2 of the first branch 2, the normally open timedelay release contact of the time relay KT, and the coil of the main circuit 1 contactor KM are connected in parallel with a second branch 3. The second branch 3 includes a power supply normal indicator light HL2.

[0017] The second branch 3 is connected in parallel with a third branch 4. The third branch 4 includes a normally closed timedelay closing contact of the time relay KT and an alarm HL3 connected in series in sequence. The normally closed timedelay closing contact of the time relay KT is connected in parallel with the normally open contact of the intermediate relay KA, and the alarm HL3 is connected in parallel with the coil of the intermediate relay KA.

[0018] The main circuit 1 includes a power supply (24V power supply), the normally open contact of the circuit breaker QF, the normally open contact of the main circuit 1 contactor KM, and an oil pump. The normally open contact of the circuit breaker QF and the normally open contact of the main circuit 1 contactor KM are electrically connected in sequence between the power supply and the oil pump.

[0019] The specific operation process of this embodiment:

[0020] Second branch 3: Close the control power switch circuit breaker QF. The power supply normal indicator light HL2 lights up, indicating that the power supply is normal and the refueling condition is met.

[0021] First branch 2: Press the start button SB2. The coils of the main circuit 1 contactor KM and the time relay KT are energized. The normally open contact of the main circuit 1 contactor KM closes, and the main circuit 1 contactor KM realizes selflocking.

[0022] At the same time, the time relay KT starts timing. The normally open contact of the main circuit 1 contactor KM in the main circuit 1 closes, and at the same time, the refueling indicator light HL1 lights up, indicating that the fuel pump starts refueling.

[0023] When the set time of the time relay KT is reached and the fuel tank is full, the normally open timedelay release contact of the time relay KT disconnects the coil of the main circuit 1 contactor KM, and the oil pump stops running.

[0024] Third branch 4: At the same time, the normally closed timedelay closing contact of the time relay KT closes. The coil of the intermediate relay KA is energized to realize selflocking. At the same time, the alarm HL3 rings, indicating that the fuel tank is full.

[0025] It can greatly save manpower and material resources. There is no need for staff to always stay in front of the fuel tank to monitor. When the fuel tank is full, it can automatically alarm and automatically stop the oil pump, preventing oil spillage; the set time of the time relay KT can be flexibly set according to the actual situation, and it can alarm when the fuel tank is full; the 24V power supply can be taken from the battery system of the diesel generator, which is convenient and practical.

[0026] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Diesel crusher fuel injection control circuit, characterized in that, It includes a main circuit, a first branch, a second branch, and a third branch; The first branch includes a normally open contact of a circuit breaker QF, a stop button SB1, a start button SB2, a power-on delay off contact of a time relay KT, and a coil of a main circuit contactor KM, which are connected in series in sequence. The start button SB2 is paralleled with a normally open contact of the main circuit contactor KM. A coil of the time relay KT is paralleled between the power-on delay off contact of the time relay KT and the coil of the main circuit contactor KM. A refueling indicator light HL1 is paralleled with the coil of the main circuit contactor KM; A second branch is paralleled between the stop button SB1, the start button SB2, the power-on delay off contact of the time relay KT, and the coil of the main circuit contactor KM of the first branch. The second branch includes a power supply normal indicator light HL2; The second branch is paralleled with the third branch. The third branch includes a power-on delay on contact of the time relay KT and an alarm HL3, which are connected in series in sequence. The power-on delay on contact of the time relay KT is paralleled with a normally open contact of an intermediate relay KA. The alarm HL3 is paralleled with a coil of the intermediate relay KA; 2. The fuel injection control circuit of the diesel crusher according to claim 1, characterized in that, The main circuit includes a power supply, a normally open contact of a circuit breaker QF, a normally open contact of a main circuit contactor KM, and an oil pump. The power supply is electrically connected with the oil pump through the normally open contact of the circuit breaker QF and the normally open contact of the main circuit contactor KM in sequence.

Images