Control device for automatic filtering and washing machine

Abstract

The utility model provides a control device for an automatic filtering and washing machine, which is connected to a main power supply, is used for controlling at least one electromagnetic valve and at least one backwashing motor, and comprises a PLC (Programmable Logic Controller), a switching power supply, an analog quantity expansion module, at least one control unit and at least one pressure difference transmitter, a main power supply interface of the PLC is connected to a main power supply through a switching power supply, and the PLC is connected to the backwashing motor through the control unit; the PLC is connected to the pressure difference transmitter through the analog quantity expansion module, and the pressure difference transmitter is arranged in the automatic filter washing machine; the control unit comprises at least one start button, at least one intermediate relay, at least one stop button and at least one contactor; the control device can be used for controlling the automatic filter washing machine to carry out automatic washing, so that the enterprise cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a control device for automatic filter washing machine. BACKGROUND

[0002] In the spinning industry factory, the water recovered by the granulator is stored in a storage tank, which needs to pass through the automatic filter washing machine for filtration through the backwashing motor. After the granulation water passes through the automatic filter washing machine, a part of it is backflowed to adjust the water pressure, and then passes through the heat exchanger and the small filter screen. After passing through the small filter screen, it is divided into three streams of water, overflow water, spraying water and conveying water. The granulation system is also divided into three streams of water to return to the storage tank (granulation water at the bottom of the cutting knife, the cutting knife and the spin dryer).

[0003] Among them, when the filter of the automatic filter washing machine is dirty, the automatic filter washing machine will perform backwashing at regular intervals to flush out the dirt. The existing automatic filter washing machine is an imported device, each set of automatic filter washing machine has its own controller, and the controller is a special single-chip microcomputer plus a touch screen control. The price is expensive (about 50,000 yuan) and the supply cycle is long, which greatly increases the cost of enterprises. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a control device for an automatic filter washing machine, which can control the automatic filter washing machine to perform automatic flushing, thereby greatly reducing the cost of enterprises.

[0005] The utility model is implemented in the following manner: a control device for an automatic filter washing machine is connected to a total power supply and used for controlling at least one electromagnetic valve and at least one backwashing motor, comprising a PLC controller, a switching power supply, an analog quantity expansion module, at least one control unit and at least one differential pressure transmitter.

[0006] The total power supply interface of the PLC controller is connected to the total power supply through the switching power supply, and the PLC controller is connected to the backwashing motor through the control unit. The PLC controller is connected to the differential pressure transmitter through the analog quantity expansion module, and the differential pressure transmitter is arranged in the automatic filter washing machine.

[0007] The control unit comprises at least one start button, at least one intermediate relay, at least one stop button and at least one contactor. The total power supply is connected to the backwashing motor through the contactor, the coil of the contactor is connected to the total power supply through the intermediate relay, and the PLC controller is connected to the contactor, the start button and the stop button respectively.

[0008] Further, a touch screen is further included, which is connected to the switching power supply and the PLC controller.

[0009] Further, the control unit further comprises an air switch, which is arranged between the total power supply and a contactor, and the PLC controller is connected to the air switch.

[0010] Further, the model of the PLC controller is CPU226.

[0011] Further, the model of the analog quantity extension module is EM231.

[0012] The control device for the automatic filter-washing machine has the advantages that the control device can control multiple groups of the automatic filter-washing machine, the cost of the PLC controller is only a few hundred, the cost of the enterprise is greatly reduced, and if the PCL is damaged, it can be directly purchased in the market, so that the supply cycle is greatly shortened. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described in connection with the embodiments with reference to the drawings.

[0014] Fig. 1 is a PLC controller circuit principle drawing of the control device for the automatic filter-washing machine.

[0015] Fig. 2 is a total power supply circuit principle drawing of the control device for the automatic filter-washing machine.

[0016] Fig. 3 is a backwashing motor circuit principle drawing of the control device for the automatic filter-washing machine. DETAILED DESCRIPTION

[0017] Please refer to Figs. 1 to 3 The utility model discloses a control device for automatic filter-washing machine, is connected to total power supply, is used for controlling at least one electromagnetic valve 1-Y1 and at least one backwashing motor 1-M, including PLC controller, switching power supply 1-P1, analog quantity extension module, at least one control unit, at least one differential pressure transmitter DP001;The electromagnetic valve 1-Y1 is used for controlling the switch of automatic filter-washing machine pipeline, makes that the pelletizing water passes through or disconnects;Total power supply is equipped with switch Q01, is used for controlling the opening section of whole circuit;Total power supply includes L11, L12, L13, N, PE, and L11, L12, L13 are all firewire, and N is zero line, and PE is ground wire;The L13 of total power supply and N1 are connected to switching power supply 1-P1 through switch 1-Q3, and the line from switching power supply 1-P1 is L1- and L1+ respectively;

[0018] The total power supply interface of the PLC controller is connected to the total power supply through the switching power supply 1-P1, and the PLC controller is connected to the backwashing motor 1-M through the control unit; the PLC controller is connected to the differential pressure transmitter DP001 through the analog quantity extension module, and the differential pressure transmitter DP001 is arranged in the automatic filter washing machine; the control coil and feedback signal of the backwashing motor 1-M and the electromagnetic valve 1-Y1 are connected to the digital quantity input and output interface of the PLC controller; the PLC controller is connected to the coil of the normally open contactor 1-KM01, the coil of the intermediate relay 1-K01 and the coil of the electromagnetic valve 1-Y1.

[0019] The control unit comprises at least one start button SB1.1, at least one intermediate relay 1-k01, at least one stop button SB1.2 and at least one contactor 1-KM01, the total power supply is connected to the backwashing motor 1-M through the contactor 1-KM01, the coil of the contactor 1-KM01 is connected to the total power supply through the intermediate relay 1-k01, and the PLC controller is connected to the contactor 1-KM01, the start button SB1.1 and the stop button SB1.2 respectively; the pin 1.1 of the PLC controller is connected to the signal line of the contactor 1-KM01; the PLC controller is started through the start button SB1.1, controls the intermediate relay 1-K01 to be closed, so that the coil of the contactor 1-KM01 is turned on, so that the switch of the contactor 1-KM01 is closed, so that the backwashing motor 1-M is started; and the PLC controller controls the electromagnetic valve 1-Y1 to be opened, so that water enters the automatic filter washing machine, washes the filter core in the automatic filter washing machine, and makes the dirt in the filter core be washed away; the stop button SB1.2 is pressed, and then the coil of the contactor 1-KM01 is disconnected, so that the contactor 1-KM01 is disconnected, the backwashing motor 1-M is stopped, and the PLC controller controls the relay to be closed; in addition, when the differential pressure transmitter DP001 detects that the differential pressure reaches the set value, a signal is also sent to the PLC controller, so that the PLC controller controls the automatic filter washing machine to be washed, and the washing is closed after the set time; 1-Y1, 2-Y1 and 3-Y1 in the figure are relays; 1-K01, 2-K01 and 3-K01 are intermediate relays, 1-M, 2-M and 3-M are backwashing motors, SB1.1, SB1.3 and SB2.1 are start buttons, SB1.2, SB1.4 and SB2.2 are stop buttons, 1-Q1, 2-Q1 and 3-Q1 are air switches, and 1-KM01, 2-KM01 and 3-KM01 are contactors.

[0020] Preferably, the embodiment further comprises a touch screen connected to the switching power supply 1-P1 and the PLC controller; the touch screen is SMART10000; the touch screen is connected with L1- and L1+ of the switching power supply 1-P1, and the touch screen is connected with port1 of the PLC controller.

[0021] Preferably, the embodiment further comprises an air switch 1-Q1 arranged between the total power supply and the contactor 1-KM01, and the PLC controller is connected to the air switch 1-Q1; the air switch 1-Q1 is in a normally closed state, and the air switch 1-Q1 is opened in the case of total power supply short circuit, and the PLC controller obtains an air switch opening signal after the air switch is opened, and then the PLC controller controls the intermediate relay 1-k01 to be opened and controls the electromagnetic valve 1-Y1 to be opened; a signal lead in the air switch 1-Q1 is connected to a pin 0.6 of the PLC controller.

[0022] Preferably, the PLC controller is of a CPU226 type, which can be directly purchased in the market.

[0023] Preferably, the analog quantity expansion module is of an EM231 type, which can be directly purchased in the market.

[0024] In the description of the utility model, it is understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] Although the specific embodiments of the utility model have been described above, those skilled in the art should understand that the specific embodiments described are only illustrative, and are not used to limit the scope of the utility model, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the utility model should be covered within the scope of protection of the claims of the utility model.

Claims

1. A control device for an automatic filter cleaning machine, connected to a general power supply, for controlling at least one solenoid valve and at least one backwash motor, characterized in that: The PLC controller, the switching power supply, the analog quantity extension module, at least one control unit, and at least one differential pressure transmitter are included. The total power supply interface of the PLC controller is connected to the total power supply through the switching power supply, the PLC controller is connected to the backwashing motor through the control unit, and the PLC controller is connected to the differential pressure transmitter through the analog quantity extension module, and the differential pressure transmitter is arranged in the automatic filter cleaning machine. The control unit includes at least one start button, at least one intermediate relay, at least one stop button, and at least one contactor, the total power supply is connected to the backwashing motor through the contactor, the coil of the contactor is connected to the total power supply through the intermediate relay, and the PLC controller is connected to the contactor, the start button, and the stop button respectively.

2. A control device for an automatic filter cleaning machine as defined in claim 1, characterized in that: A touch screen is further included, and the touch screen is connected to the switching power supply and the PLC controller.

3. A control device for an automatic filter cleaning machine as defined in claim 1, characterized in that: The control unit further includes an air switch arranged between the total power supply and the contactor, and the PLC controller is connected to the air switch.

4. A control for an automatic filter cleaning machine as defined in claim 1 wherein: The model of the PLC controller is CPU226.

5. A control for an automatic filter cleaning machine as defined in claim 1 wherein: The model of the analog quantity extension module is EM231.

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