A control cabinet for a phosphogypsum drying room

Abstract

This utility model discloses a control cabinet for a phosphogypsum drying room. The control cabinet is equipped with control circuits for a hot water pump, a warm air fan, an axial flow fan, a water softener, an electric valve, and an electric regulating valve. This control cabinet, with its integrated control circuits for the hot water pump, warm air fan, axial flow fan, water softener, electric valve, and electric regulating valve, achieves centralized control of these components, reducing the workload for operators.

Description

Technical Field

[0001] This utility model relates to a control cabinet for a phosphogypsum drying room. Background Technology

[0002] In the production and processing of phosphogypsum, the drying chamber is an essential piece of equipment, and its performance directly affects the production efficiency and quality of the phosphogypsum. The drying chamber uses a heat source to heat soft water (soft water is used to prevent scaling), which is then transferred to radiators inside the chamber to provide heating and controllable temperature and humidity, allowing for the dehydration of phosphogypsum assembly boards and other products. Existing drying chamber control systems are decentralized, with hot water pumps, fans, and other components controlled in a distributed manner, making centralized control impossible and increasing the workload for operators. Utility Model Content

[0003] To address the technical problems existing in the prior art, this utility model provides a control cabinet for a phosphogypsum drying room. This control cabinet can realize centralized control of hot water pumps, warm air fans, axial flow fans, water softeners, electric valves, and electric regulating valves.

[0004] Therefore, the control cabinet provided by this utility model is equipped with a hot water pump control circuit, a warm air fan control circuit, an axial flow fan control circuit, a water softener control circuit, an electric valve control circuit, and an electric regulating valve control circuit.

[0005] Furthermore, the hot water pump control circuit includes a frequency converter and a switch QF1. The power supply is connected to the frequency converter via the switch QF1, and the output of the frequency converter is used to connect to the hot water pump.

[0006] Furthermore, the hot water pump control circuit also includes a relay KM1. The normally open contact of the relay KM1 is connected to one end of the switch QF1 that is connected to the frequency converter, and the normally closed contact serves as the output for connecting to the hot water pump. One end of the coil of the relay KM1 is connected to L via the switch, and the other end is connected to N.

[0007] Furthermore, the control circuit for the heater fan includes a switch QF2 and a relay KM2. The power supply is connected to the normally open contact of the relay KM2 via the switch QF2, and the normally closed contact of the relay KM2 serves as the output for connecting to the heater fan. One end of the coil of the relay KM2 is connected to L via the switch, and the other end is connected to N.

[0008] Furthermore, the heater fan control circuit also includes a fuse FR connected in series with the normally closed contact of the relay KM2.

[0009] Furthermore, the axial flow fan control circuit includes a switch QF3 and a relay KM3. The power supply is connected to the normally open contact of the relay KM3 via the switch QF3, and the normally closed contact of the relay KM3 serves as the output for connecting to the axial flow fan. One end of the coil of the relay KM3 is connected to L via the switch, and the other end is connected to N.

[0010] Furthermore, the axial flow fan control circuit also includes a fuse FR connected in series with the normally closed contact of the relay KM3.

[0011] Furthermore, the water softener control circuit, the electric valve control circuit, and the electric regulating valve control circuit each include a switch QF4 and a relay KM4. One end of the switch QF4 is used for power input, and the other end is connected to the normally open contact of the relay KM4. The normally closed contact of the relay KM4 serves as the output and is used to connect to the water softener, the electric valve, and the electric regulating valve, respectively. One end of the coil of the relay KM4 is connected to L via the switch, and the other end is connected to N.

[0012] Furthermore, the control cabinet is also equipped with a backup power supply.

[0013] Furthermore, the control cabinet is also equipped with a safety maintenance power supply circuit, which includes a switch QF9 and a transformer T. Power is supplied to the transformer T via the switch QF9, and the secondary side of the transformer T outputs maintenance power.

[0014] The beneficial effects of this utility model are as follows: This control cabinet is equipped with a hot water pump control circuit, a warm air fan control circuit, an axial flow fan control circuit, a water softener control circuit, an electric valve control circuit, and an electric regulating valve control circuit, which realizes centralized control of the hot water pump, warm air fan, axial flow fan, water softener, electric valve, and electric regulating valve, and reduces the intensity of operation. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this application, the accompanying drawings used or involved in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and other drawings can be obtained based on these drawings without creative effort:

[0016] Figure 1-2 This is a schematic diagram of the electrical principle of the control cabinet provided by this utility model. Detailed Implementation

[0017] This section describes the invention more fully with reference to the accompanying drawings, in which illustrative embodiments of the invention are shown. However, the invention is also embodied in many different forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure is thorough and complete, and to fully convey the scope of the invention to those skilled in the art.

[0018] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprising” and “including,” as used herein, specify the presence of the illustrated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof.

[0019] Unless defined to the contrary, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in common dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant field, and will not be interpreted in an idealized or highly formal sense unless specifically defined herein.

[0020] The control cabinet provided by this utility model is equipped with a hot water pump control circuit, a warm air fan control circuit, an axial flow fan control circuit, a water softener control circuit, an electric valve control circuit, and an electric regulating valve control circuit. The hot water pump control circuit is used to control the start and stop of the hot water pump, and includes a switch QF1 and a frequency converter. One end of switch QF1 is used for power input, and the other end is connected to the frequency converter. The output of the frequency converter is used to connect to the hot water pump. When AC power is connected to switch QF1, and QF1 is closed, the AC power is converted by the frequency converter and supplied to the hot water pump to drive it to start; when QF1 is open, the AC power is cut off, and the hot water pump stops.

[0021] To meet the needs of different hot water pumps, the frequency converters in the hot water pump control circuit include 4KW frequency converters and 2.2KW frequency converters, such as... Figure 1 As shown.

[0022] The hot water pump control circuit is also equipped with relay KM1. The normally open contact of relay KM1 is connected to the end of switch QF1 that is connected to the frequency converter, and the normally closed contact serves as the output for connecting to the hot water pump. One end of the coil of relay KM1 is connected to L via switch 1, and the other end is connected to N, such as... Figure 2As shown. Power AC is connected to the hot water pump via switch QF1 and relay KM1. When both switch QF1 and relay KM1 are closed, power AC is directly supplied to the hot water pump connected to relay KM1 to control its start and stop. The on / off state of relay KM1 is controlled by switch 1.

[0023] The heater fan control circuit is used to control the start and stop of the heater fan. It includes switch QF2 and relay KM2. One end of switch QF2 is used for AC power input, and the other end is connected to the normally open contact of relay KM2. The normally closed contact of relay KM2 is used as the output to connect to the heater fan. One end of the coil of relay KM2 is connected to L via switch 1, and the other end is connected to N.

[0024] When AC power is connected to switch QF2 and both QF2 and switch 1 are closed, AC power is supplied to the heater to start it; when either QF2 or switch 1 is open, AC power is cut off and the heater stops.

[0025] The number of control circuits for the heater fan can be configured to be multiple according to requirements, such as... Figure 1 As shown, it is configured with 5 channels to control multiple warm air blowers, and each channel is connected in parallel and independent of each other, forming a redundant structure.

[0026] The control circuit for the heater fan also includes a fuse FR connected in series with the normally closed contacts of relay KM2. When the current in the circuit exceeds the carrying capacity of FR, it indicates an overcurrent. FR will then disconnect, cutting off the AC power supply and preventing the heater fan from burning out.

[0027] The axial flow fan control circuit is used to control the start and stop of the axial flow fan. It includes switch QF3 and relay KM3. The power supply is connected to the normally open contact of relay KM3 through switch QF3. The normally closed contact of relay KM3 is used as the output to connect to the axial flow fan. One end of the coil of relay KM3 is connected to L through switch 1, and the other end is connected to N.

[0028] When AC power is connected to switch QF3 and both QF3 and switch 1 are closed, AC power is supplied to drive the axial flow fan to start; when QF3 or switch 1 is open, AC power is cut off and the axial flow fan stops.

[0029] The number of control loops for axial flow fans can be configured to be multiple according to requirements, such as... Figure 1 As shown, it is configured with 10 axial flow fan controls to realize the control of multiple axial flow fans. Each fan is connected in parallel and independent of each other, forming a redundant structure.

[0030] The axial flow fan control circuit also includes a fuse FR connected in series with the normally closed contact of relay KM3. When the current in the circuit exceeds the carrying capacity of FR, it indicates an overcurrent. FR will disconnect, cutting off the power supply AC and preventing the axial flow fan from burning out.

[0031] The water softener control circuit, the electric valve control circuit, and the electric regulating valve control circuit each include a switch QF4 and a relay KM4. One end of the switch QF4 is used for power input, and the other end is connected to the normally open contact of the relay KM4. The normally closed contact of the relay KM4 serves as the output and is used to connect to the water softener, the electric valve, and the electric regulating valve, respectively. One end of the coil of the relay KM4 is connected to L via switch 1, and the other end is connected to N.

[0032] Combination Figure 1 As shown, those skilled in the art should understand that the water softener control circuit, the electric valve control circuit, and the electric regulating valve control circuit each include a switch QF4 and a relay KM4, forming independent circuits. The operation of switch QF4 and relay KM4 in one circuit only controls the load operation of that circuit and does not affect the load operation of other circuits. If switch QF4 and relay KM4 in the water softener control circuit are closed, and QF4 and KM4 in the electric valve control circuit and the electric regulating valve control circuit are open, only the water softener is started, while the electric valve and the electric regulating valve are stopped.

[0033] The number of control circuits for the water softener, electric valve, and electric regulating valve can be configured according to requirements.

[0034] This control cabinet is also equipped with:

[0035] 1) AC-DC module: AC power is connected to the AC-DC module via switch QF5. The AC-DC module processes the power and outputs DC power, which is used as the power supply for the switching power supply.

[0036] 2) The power supply terminal inside the cabinet is connected to AC power via switch QF6;

[0037] 3) The backup power supply is connected to the AC power supply via switches QF7 and QF8;

[0038] 4) Safety maintenance power supply circuit, which includes switch QF9 and transformer T. The AC power supply is connected to transformer T via switch QF9. Transformer T steps down the AC voltage to a safe voltage. The secondary side of transformer T serves as the safety maintenance power supply terminal to output maintenance power to the required equipment.

[0039] The L and N mentioned in this article represent power supply + and power supply -, which can be the positive and negative of AC or DC power. They are sufficient to energize the relay coil and control the relay contacts to open and close.

[0040] The hot water pump, warm air fan, axial flow fan, water softener, electric valve, and electric regulating valve described in this article are installed in the designated locations of the phosphogypsum drying room according to the requirements of the phosphogypsum drying room, and are electrically connected to the control cabinet through wires to realize start and stop control.

[0041] The AC power supply is connected to the control cabinet via switch QF. Switches QF, QF1-QF9, and switch 1 are mechanical switches that are manually controlled; they can also be intelligent switches whose on / off state is controlled by other control systems.

[0042] This disclosure has been described with reference to the foregoing embodiments; however, these embodiments are merely examples for implementing this disclosure. It must be noted that the disclosed embodiments do not limit the scope of this disclosure. On the contrary, any changes and modifications made without departing from the spirit and scope of this disclosure are within the scope of patent protection of this disclosure.

Claims

1. A phosphogypsum kiln control cabinet characterized by, The control cabinet is equipped with a hot water pump control circuit, a warm air fan control circuit, an axial flow fan control circuit, a water softener control circuit, an electric valve control circuit, and an electric regulating valve control circuit. The hot water pump control circuit includes a frequency converter and a switch QF1. The power supply is connected to the frequency converter via the switch QF1, and the output of the frequency converter is used to connect to the hot water pump. The control circuit for the heater fan includes a switch QF2 and a relay KM2. The power supply is connected to the normally open contact of the relay KM2 via the switch QF2. The normally closed contact of the relay KM2 is used as the output to connect to the heater fan. One end of the coil of the relay KM2 is connected to L via the switch, and the other end is connected to N. The axial flow fan control circuit includes a switch QF3 and a relay KM3. The power supply is connected to the normally open contact of the relay KM3 via the switch QF3. The normally closed contact of the relay KM3 is used as the output to connect to the axial flow fan. One end of the coil of the relay KM3 is connected to L via the switch, and the other end is connected to N. The water softener control circuit, the electric valve control circuit, and the electric regulating valve control circuit each include a switch QF4 and a relay KM4. One end of the switch QF4 is used for power input, and the other end is connected to the normally open contact of the relay KM4. The normally closed contact of the relay KM4 serves as the output and is used to connect to the water softener, the electric valve, and the electric regulating valve, respectively. One end of the coil of the relay KM4 is connected to L via the switch, and the other end is connected to N.

2. The phosphogypsum oven control cabinet according to claim 1, characterized in that, The hot water pump control circuit also includes a relay KM1. The normally open contact of the relay KM1 is connected to one end of the switch QF1 that is connected to the frequency converter, and the normally closed contact serves as the output for connecting to the hot water pump. One end of the coil of the relay KM1 is connected to L via the switch, and the other end is connected to N.

3. The phosphogypsum kiln control cabinet of claim 1, wherein, The heater fan control circuit also includes a fuse FR connected in series with the normally closed contact of the relay KM2.

4. The phosphogypsum kiln control cabinet of claim 1, wherein, The axial flow fan control circuit also includes a fuse FR connected in series with the normally closed contact of the relay KM3.

5. The phosphogypsum drying oven control cabinet according to claim 1, characterized in that, The control cabinet is also equipped with a backup power supply.

6. The phosphogypsum drying oven control cabinet according to claim 1, characterized in that, The control cabinet is also equipped with a safety maintenance power supply circuit, which includes a switch QF9 and a transformer T. Power is supplied to the transformer T via the switch QF9, and the secondary side of the transformer T outputs maintenance power.

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