Interlocking loop of dry ammonium finished product discharging and unloading control system

Abstract

The invention discloses a dry ammonium finished product discharging and unloading control system interlocking loop which comprises a dry ammonium fluidized bed, a discharging chute is connected to an outlet of the dry ammonium fluidized bed, and a belt conveyor is arranged at an outlet of the discharging chute; the fluidized bed discharging unloader is arranged at the joint of the dry ammonium fluidized bed and the discharging chute; an electric valve is arranged at the lower part of the blanking articulated chute; the electric valves, the discharging discharger and the belt conveyor control loop are three independent loops, interlocking conditions are set among the three independent loops, interlocking lines are connected in the control loops, when a motor of the dry ammonium finished product belt conveyor stops or jumps, the corresponding electric valves are closed according to the interlocking conditions, and therefore the discharging discharger can discharge the dry ammonium finished product. And the fluidized bed discharging unloader can be timely interlocked and stopped, so that the fluctuation of a production system caused by material blockage due to jump stop of the belt conveyor can be avoided, and the production stability is ensured.

Description

Technical Field

[0001] The invention relates to an interlocking circuit of a discharging and unloading control system, in particular to an interlocking wiring method of a discharging and unloading control system for a finished dry ammonium product. Background Art

[0002] The fluidized bed discharger discharges materials to the belt conveyor through a gate valve, and the control circuits cannot be interlocked and controlled, resulting in the following defects: the belt conveyor stops due to a fault, the electric valve is always open, and the discharger is still discharging materials, causing a lot of materials to accumulate on the belt. A large amount of material is piled on the belt conveyor, which makes subsequent disposal difficult and affects production time for a long time; at the same time, large-area unloading of the discharger is prone to blockage, which causes the motor coil to heat up and burn, causing fluctuations in the production system and even production interruptions. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and to provide an interlocking circuit for a dry ammonium finished product discharging and unloading control system. The interlocking circuit of the dry ammonium finished product discharging and unloading control system interlocks an electric valve, a fluidized bed discharging and unloading device, and a belt conveyor control circuit. Once the belt conveyor stops or the motor stops, the corresponding electric valve is closed, and the fluidized bed discharging and unloading device can also be interlocked and stopped in time, thereby reducing production fluctuations in time and ensuring stable production.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: The invention discloses an interlocking circuit of a control system for discharging and unloading finished dry ammonium products, comprising a dry ammonium fluidized bed, an outlet of the dry ammonium fluidized bed is connected with a discharge chute, and a belt conveyor is arranged at the outlet of the discharge chute.

[0005] The fluidized bed discharger is arranged at the connection between the dry ammonium fluidized bed and the discharge chute.

[0006] An electric valve is provided at the lower part of the unloading chute.

[0007] The belt conveyor is independently provided with a belt conveyor control circuit to independently control the operation of the belt conveyor.

[0008] The electric valve is independently provided with an electric valve control circuit to independently control the operation of the electric valve.

[0009] The discharge discharger is independently provided with a discharge discharger control circuit to independently control the operation of the discharge discharger.

[0010] Interlocking conditions are set for the electric valve control circuit, the material discharging unloader control circuit and the belt conveyor control circuit, and interlocking is formed by connecting the interlocking lines.

[0011] Interlocking conditions include interlocking start conditions and interlocking stop conditions.

[0012] The interlock start condition is: when the belt conveyor starts, the electric valve interlocks and starts, and the discharging unloader interlocks and starts; the interlock stop condition is: when the belt conveyor stops, the electric valve interlocks and stops, and the discharging unloader interlocks and stops.

[0013] An intermediate relay R1 is provided in the belt conveyor control circuit.

[0014] An electric valve forward control circuit and an electric valve reverse control circuit are provided in the electric valve control circuit; a forward start switch, a contactor MC1 and an intermediate relay R4 are provided in the electric valve forward control circuit, and a reverse start switch, a contactor MC2 and an intermediate relay R3 are provided in the electric valve reverse control circuit; the forward start switch and the contactor MC1 in the electric valve forward control circuit and the reverse start switch and the contactor MC2 in the electric valve reverse control circuit are provided in parallel, and the forward start switch and the reverse start switch are both in the disconnected state.

[0015] The intermediate relay R1 provides two sets of signal interlock dry contacts, one set of normally open dry contacts R1-1, and the other set of normally closed dry contacts R1-2. The normally open dry contact R1-1 is connected to the forward start switch in parallel with the forward start switch, and the normally closed dry contact R1-2 is connected to the reverse start switch in parallel with the reverse start switch.

[0016] The intermediate relay R3 provides a group of normally closed dry contacts R3-1, and the intermediate relay R4 provides a group of normally open dry contacts R4-1. The normally closed dry contacts R3-1 and the normally open dry contacts R4-1 are connected in series to the control circuit of the discharger.

[0017] A bellows is arranged at the lower part of the material discharge chute. The bellows is arranged circumferentially along the outer wall of the material discharge chute, and the lower end of the bellows is flush with the lower end of the material discharge chute.

[0018] An operation method of an interlocking circuit of a control system for discharging and unloading a finished dry ammonium product, including an interlocking startup operation method, adopting the following steps: S1, after the control circuit of a finished dry ammonium product belt conveyor is operated, the coil of an intermediate relay R1 is energized and attracted, at which time a normally open dry contact R1-1 connected to a forward control circuit of an electric valve is attracted from a normally open point to a normally closed point, and the forward control circuit of the electric valve operates forward; and a normally closed dry contact R1-2 connected to a reverse control circuit of the electric valve is energized from a normally closed point to a normally open point, and the reverse control circuit of the electric valve stops operating.

[0019] S2, the electric valve control circuit meets the interlocking start-up conditions, and the electric valve interlock opens; at the same time, the coil of the intermediate relay R4 in the electric valve forward control circuit is energized and attracted, and the normally open dry contact R4-1 connected to the discharge unloader control circuit changes from a normally open point to a normally closed point; at this time, the coil of the intermediate relay R3 is not energized, and the normally closed dry contact R3-1 does not operate.

[0020] S3, the discharge unloader control circuit meets the interlock start-up conditions, and the discharge unloader interlock is opened.

[0021] It also includes an interlocking shutdown operation method, which adopts the following steps: S1. When the dry ammonium finished product belt conveyor stops due to a fault or the belt conveyor motor stops, the intermediate relay R1 coil loses power. At this time, the normally open dry contact R1-1 connected to the electric valve forward control circuit loses power from the normally closed point and recovers to the normally open point, and the electric valve forward control circuit stops running; and the normally closed dry contact R1-2 connected to the electric valve reverse control circuit loses power from the normally open point and recovers to the normally closed point, and the electric valve reverse control circuit reverses and runs.

[0022] S2, the electric valve control circuit meets the interlock shutdown conditions, and the electric valve interlock is closed; the coil of the intermediate relay R3 is energized and attracted, and the normally closed dry contact R3-1 connected to the discharge unloader control circuit is energized from the normally closed point to the normally open point; at this time, the coil of the intermediate relay R4 loses power, and the normally open dry contact R4-1 is restored from the normally closed point to the normally open point.

[0023] S3. The control circuit of the discharge unloader meets the interlocking shutdown conditions, and the discharge unloader is interlocked and shut down.

[0024] The present invention has the following beneficial effects: 1. The electric valve, discharge discharger and belt conveyor control circuit are three independent circuits. By setting interlocking conditions between the three independent circuits and connecting the interlocking lines in the control circuit, when the dry ammonium finished product belt conveyor motor stops or trips, the corresponding electric valve is closed through the interlocking conditions, and the fluidized bed discharge discharger can also be interlocked and stopped in time, which can avoid blockage caused by the belt conveyor tripping and cause fluctuations in the production system, thereby ensuring stable production.

[0025] 2. Use the two sets of dry contacts (one set of normally open dry contacts and one set of normally closed dry contacts) in the control circuit of the finished ammonium product belt conveyor to connect to the electric valve control circuit, and connect the two sets of dry contacts (one set of normally open dry contacts and one set of normally closed dry contacts) in the electric valve to the discharge unloader control circuit to achieve the connection of the interlocking circuits of the three control circuits. The three independent devices meet the interlocking operation, and the normal startup and shutdown of the equipment can be operated through the interlocking conditions, and the production equipment can meet the normal operation.

[0026] 3. The interlock start condition is: when the belt conveyor starts, the electric valve interlocks and starts, and the discharging unloader interlocks and starts; the interlock stop condition is: when the belt conveyor stops, the electric valve interlocks and stops, and the discharging unloader interlocks and stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic structural diagram of a dry ammonium finished product discharging and unloading control system.

[0028] Figure 2 The invention relates to a belt conveyor interlocking control circuit in an interlocking circuit of a discharging and unloading control system for a dry ammonium finished product.

[0029] Figure 3 It is a partial enlarged view of the belt conveyor interlocking control circuit of the present invention.

[0030] Figure 4 It is a schematic diagram of two groups of signal interlock dry contacts provided by the intermediate relay R1 in the electric valve interlock control circuit of the present invention.

[0031] Figure 5 The invention relates to an electric valve interlocking control circuit in an interlocking circuit of a control system for discharging and unloading a dry ammonium finished product.

[0032] Figure 6 It is a partial enlarged view of the electric valve interlocking control circuit of the present invention.

[0033] Figure 7 It is a schematic diagram of two groups of signal interlock dry contacts provided by the intermediate relays R3 and R4 in the electric valve interlock control circuit of the present invention.

[0034] Figure 8 The invention relates to a discharge unloader interlocking control circuit in an interlocking circuit of a discharge unloading control system for a finished dry ammonium product.

[0035] Fig. 9 It is a partial enlarged view of the interlocking control circuit of the material discharger of the present invention.

[0036] These include: 1. dry ammonium fluidized bed; 2. fluidized bed discharger; 3. discharge chute; 4. electric valve; 5. belt bellows; 6. belt conveyor. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0038] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0039] like Figure 1As shown, an interlocking circuit of a dry ammonium finished product discharging and unloading control system includes a dry ammonium fluidized bed, an outlet of the dry ammonium fluidized bed is connected to a discharge chute, and a belt conveyor is arranged at the outlet of the discharge chute.

[0040] The fluidized bed discharger is arranged at the connection between the dry ammonium fluidized bed and the discharge chute.

[0041] An electric valve is installed at the lower part of the discharge chute. Figure 1 As shown, the electric valve is located at the lower part of the unloading chute and above the belt conveyor.

[0042] Furthermore, if Figure 2-9 As shown, the electric valve, discharge unloader and belt conveyor control circuits are three independent circuits. Each control circuit is independent of each other, and the equipment operations are independent of each other.

[0043] The belt conveyor is independently provided with a belt conveyor control circuit to independently control the operation of the belt conveyor.

[0044] The electric valve is independently provided with an electric valve control circuit to independently control the operation of the electric valve.

[0045] The discharge discharger is independently provided with a discharge discharger control circuit to independently control the operation of the discharge discharger.

[0046] Interlocking conditions are set for the electric valve control circuit, the material discharging unloader control circuit and the belt conveyor control circuit, and interlocking is formed by connecting the interlocking lines.

[0047] Interlocking conditions include interlocking start conditions and interlocking stop conditions.

[0048] The interlock start condition is: when the belt conveyor starts, the electric valve interlocks and starts, and the discharging unloader interlocks and starts; the interlock stop condition is: when the belt conveyor stops, the electric valve interlocks and stops, and the discharging unloader interlocks and stops.

[0049] An intermediate relay R1 is provided in the belt conveyor control circuit.

[0050] like Figure 5-6 As shown, the electric valve control circuit is provided with an electric valve forward control circuit and an electric valve reverse control circuit; the electric valve forward control circuit is provided with a forward start switch, a contactor MC1 and an intermediate relay R4, and the electric valve reverse control circuit is provided with a reverse start switch, a contactor MC2 and an intermediate relay R3; the forward start switch and contactor MC1 in the electric valve forward control circuit and the reverse start switch and contactor MC2 in the electric valve reverse control circuit are arranged in parallel, and the forward start switch and the reverse start switch are both in the disconnected state.

[0051] Furthermore, the forward start switch and the reverse start switch are manual switches and are manually disconnected.

[0052] like Figure 4 As shown, the intermediate relay R1 provides two groups of signal interlock dry contacts, one group of normally open dry contacts R1-1, and the other group of normally closed dry contacts R1-2. The normally open dry contact R1-1 is connected to the forward start switch in parallel with the forward start switch, and the normally closed dry contact R1-2 is connected to the reverse start switch in parallel with the reverse start switch.

[0053] like Figure 7 As shown, the intermediate relay R3 provides a group of normally closed dry contacts R3-1, and the intermediate relay R4 provides a group of normally open dry contacts R4-1. The normally closed dry contacts R3-1 and the normally open dry contacts R4-1 are connected in series to the control circuit of the discharger.

[0054] A bellows is arranged at the lower part of the material discharge chute, and the bellows is arranged circumferentially along the outer wall of the material discharge chute, and the lower end of the bellows is flush with the lower end of the material discharge chute. The bellows is installed and supported by the material discharge chute.

[0055] Furthermore, there is a certain gap between the lower end of the bellows and the lower end of the unloading chute and the belt conveyor, so as to ensure that the dry ammonium finished product powder is smoothly conveyed on the belt conveyor.

[0056] Furthermore, in order to facilitate the discharge and unloading of the finished dry ammonium product, the lower part of the dry ammonium fluidized bed is configured to be in the shape of a hopper.

[0057] An operation method of an interlocking circuit of a control system for discharging and unloading a finished dry ammonium product, including an interlocking startup operation method, adopting the following steps: S1, after the control circuit of a finished dry ammonium product belt conveyor is operated, the coil of an intermediate relay R1 is energized and attracted, at which time a normally open dry contact R1-1 connected to a forward control circuit of an electric valve is attracted from a normally open point to a normally closed point, and the forward control circuit of the electric valve operates forward; and a normally closed dry contact R1-2 connected to a reverse control circuit of the electric valve is energized from a normally closed point to a normally open point, and the reverse control circuit of the electric valve stops operating.

[0058] S2, the electric valve control circuit meets the interlocking start-up conditions, and the electric valve interlock opens; at the same time, the coil of the intermediate relay R4 in the electric valve forward control circuit is energized and attracted, and the normally open dry contact R4-1 connected to the discharge unloader control circuit changes from a normally open point to a normally closed point; at this time, the coil of the intermediate relay R3 is not energized, and the normally closed dry contact R3-1 does not operate.

[0059] S3, the discharge unloader control circuit meets the interlock start-up conditions, and the discharge unloader interlock is opened.

[0060] It also includes an interlocking shutdown operation method, which adopts the following steps: S1. When the dry ammonium finished product belt conveyor stops due to a fault or the belt conveyor motor stops, the intermediate relay R1 coil loses power. At this time, the normally open dry contact R1-1 connected to the electric valve forward control circuit loses power from the normally closed point and recovers to the normally open point, and the electric valve forward control circuit stops running; and the normally closed dry contact R1-2 connected to the electric valve reverse control circuit loses power from the normally open point and recovers to the normally closed point, and the electric valve reverse control circuit reverses and runs.

[0061] S2, the electric valve control circuit meets the interlock shutdown conditions, and the electric valve interlock is closed; the coil of the intermediate relay R3 is energized and attracted, and the normally closed dry contact R3-1 connected to the discharge unloader control circuit is energized from the normally closed point to the normally open point; at this time, the coil of the intermediate relay R4 loses power, and the normally open dry contact R4-1 is restored from the normally closed point to the normally open point.

[0062] S3. The control circuit of the discharge unloader meets the interlocking shutdown conditions, and the discharge unloader is interlocked and shut down.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The preferred embodiments of the present invention are described in detail above; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. An interlocking circuit for a control system for discharging and unloading finished dry ammonium products, characterized in that: It comprises a dry ammonium fluidized bed, the outlet of the dry ammonium fluidized bed is connected with a material discharge chute, and the outlet of the material discharge chute is arranged with a belt conveyor; The fluidized bed discharger is arranged at the connection between the dry ammonium fluidized bed and the discharge chute; An electric valve is provided at the lower part of the unloading chute; The belt conveyor is independently equipped with a belt conveyor control circuit to independently control the operation of the belt conveyor; The electric valve is independently provided with an electric valve control circuit to independently control the operation of the electric valve; The discharger is independently provided with a discharger control circuit to independently control the operation of the discharger; Interlocking conditions are set for the electric valve control circuit, the material discharging unloader control circuit and the belt conveyor control circuit, and interlocking is formed by connecting the interlocking lines.

2. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 1 is characterized in that: Interlocking conditions include interlocking start conditions and interlocking stop conditions.

3. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 2 is characterized in that: The interlock start condition is: when the belt conveyor starts, the electric valve interlocks and starts, and the discharging unloader interlocks and starts; the interlock stop condition is: when the belt conveyor stops, the electric valve interlocks and stops, and the discharging unloader interlocks and stops.

4. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 1 is characterized in that: An intermediate relay R1 is provided in the belt conveyor control circuit.

5. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 4 is characterized in that: An electric valve forward control circuit and an electric valve reverse control circuit are provided in the electric valve control circuit; a forward start switch, a contactor MC1 and an intermediate relay R4 are provided in the electric valve forward control circuit, and a reverse start switch, a contactor MC2 and an intermediate relay R3 are provided in the electric valve reverse control circuit; the forward start switch and the contactor MC1 in the electric valve forward control circuit and the reverse start switch and the contactor MC2 in the electric valve reverse control circuit are provided in parallel, and the forward start switch and the reverse start switch are both in the disconnected state.

6. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 5 is characterized in that: The intermediate relay R1 provides two sets of signal interlock dry contacts, one set of normally open dry contacts R1-1, and the other set of normally closed dry contacts R1-2. The normally open dry contact R1-1 is connected to the forward start switch in parallel with the forward start switch, and the normally closed dry contact R1-2 is connected to the reverse start switch in parallel with the reverse start switch.

7. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 6 is characterized in that: The intermediate relay R3 provides a group of normally closed dry contacts R3-1, and the intermediate relay R4 provides a group of normally open dry contacts R4-1. The normally closed dry contacts R3-1 and the normally open dry contacts R4-1 are connected in series to the control circuit of the discharger.

8. The interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 1 is characterized in that: A bellows is arranged at the lower part of the material discharge chute. The bellows is arranged circumferentially along the outer wall of the material discharge chute, and the lower end of the bellows is flush with the lower end of the material discharge chute.

9. The method for operating the interlocking circuit of the discharging and unloading control system of the finished dry ammonium product according to any one of claims 1 to 7, characterized in that: Including interlocking startup operation method, using the following steps: After the control circuit of S1 and the finished ammonium product belt conveyor is running, the coil of the intermediate relay R1 is energized and attracted. At this time, the normally open dry contact R1-1 connected to the electric valve forward control circuit is energized from the normally open point to the normally closed point, and the electric valve forward control circuit is running forward; and the normally closed dry contact R1-2 connected to the electric valve reverse control circuit is energized from the normally closed point to the normally open point, and the electric valve reverse control circuit stops running; S2, the electric valve control circuit meets the interlocking start-up conditions, and the electric valve interlock opens; at the same time, the coil of the intermediate relay R4 in the electric valve forward control circuit is energized and energized, and the normally open dry contact R4-1 connected to the discharge unloader control circuit changes from a normally open point to a normally closed point; at this time, the coil of the intermediate relay R3 is not energized, and the normally closed dry contact R3-1 does not act; S3, the discharge unloader control circuit meets the interlock start-up conditions, and the discharge unloader interlock is opened.

10. The operating method of the interlocking circuit of the control system for discharging and unloading the finished dry ammonium product according to claim 9, characterized in that: Including the interlocking shutdown operation method, the following steps are adopted: S1, when the dry ammonium finished product belt conveyor stops due to a fault or the belt conveyor motor stops, the intermediate relay R1 coil loses power, and the normally open dry contact R1-1 connected to the electric valve forward control circuit loses power from the normally closed point to the normally open point, and the electric valve forward control circuit stops running; and the normally closed dry contact R1-2 connected to the electric valve reverse control circuit loses power from the normally open point to the normally closed point, and the electric valve reverse control circuit reverses; S2, the electric valve control circuit meets the interlocking shutdown conditions, and the electric valve interlock is closed; the coil of the intermediate relay R3 is energized and attracted, and the normally closed dry contact R3-1 connected to the discharge unloader control circuit is energized from the normally closed point to the normally open point; at this time, the coil of the intermediate relay R4 loses power, and the normally open dry contact R4-1 is restored from the normally closed point to the normally open point; S3. The control circuit of the discharge unloader meets the interlocking shutdown conditions, and the discharge unloader is interlocked and shut down.

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