A mud discharge valve reversing device and reversing method

Abstract

This invention discloses a sludge discharge valve reversing device and method, comprising a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The first and third solenoid valves have their first ends connected to a high-pressure water inlet pipe for sludge discharge control. The second end of the first solenoid valve is connected to the upper chamber inlet of at least one sludge discharge lifting valve, and is also connected to the first end of the second solenoid valve. The second end of the third solenoid valve is connected to the lower chamber inlet of at least one of the sludge discharge lifting valves, and is also connected to the first end of the fourth solenoid valve. The second ends of the second and fourth solenoid valves are connected to a sludge discharge control drainage pipe. This invention uses a ball valve installed in the upper chamber of the sludge discharge lifting valve, allowing for arbitrary control of the number of operating lifting valves, reducing the failure rate of the sludge discharge lifting valve, lowering potential risks, and also reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of sludge discharge system technology, specifically to a sludge discharge valve reversing device and reversing method. Background Technology

[0002] The existing sludge discharge system in the water treatment process mainly uses 91 two-position four-way solenoid directional valves to control the opening and closing of the sludge discharge lifting valve. Its disadvantages are: the two-position four-way directional valves are affected by the operating environment, causing scale and other contaminants to form in the internal structural channels of the two-position four-way directional valves. This leads to blockage of valve cores and other structural components, misalignment of springs, deformation, etc., which causes the solenoid coils to fail to operate normally after being energized, resulting in the coils burning out due to prolonged energization. This causes the sludge discharge lifting valves to sometimes fail to open normally or fail to close after opening, resulting in the potential risks of water supply interruption and substandard water quality when the water treatment process of the left and right bank water plants is remotely controlled for sludge discharge. Summary of the Invention

[0003] The purpose of this invention is to provide a sludge discharge valve reversing device and reversing method to solve the problem in the prior art where a two-position four-way electromagnetic reversing valve controls the opening and closing of the sludge discharge lifting valve. Due to the easy accumulation of scale and other contaminants in the internal structural channels of the two-position four-way reversing valve, the valve core and other structural components become stuck, the springs become misaligned and deformed, causing the electromagnetic coil to fail to operate normally after being energized, resulting in the sludge discharge lifting valve sometimes failing to open normally or failing to close after opening.

[0004] The present invention solves the above problems through the following technical solution:

[0005] A sludge discharge valve reversing device includes a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The first ends of the first and third solenoid valves are connected to a sludge discharge control high-pressure water inlet pipe. The second end of the first solenoid valve is connected to the lower chamber inlet of at least one sludge discharge lifting valve. The second end of the first solenoid valve is also connected to the first end of the second solenoid valve. The second end of the third solenoid valve is connected to the upper chamber inlet of at least one of the sludge discharge lifting valves. The second end of the third solenoid valve is also connected to the first end of the fourth solenoid valve. The second ends of the second and fourth solenoid valves are connected to a sludge discharge control drainage pipe.

[0006] The first, second, third, and fourth solenoid valves are mounted on a reversing panel fixed to the pool wall. The first ends of the first and third solenoid valves are connected to the sludge discharge control high-pressure water inlet pipe via DN12 PU pipes, and the second ends of the second and fourth solenoid valves are connected to the sludge discharge control drainage pipe via DN12 PU pipes. The sludge discharge control high-pressure water inlet pipe and the sludge discharge control drainage pipe are made of DN15 UPVC pipes. The first and second solenoid valves are connected via DN12 PU pipes and are connected to the lower chamber inlet of the sludge discharge lifting valve via DN15 UPVC pipes. The third and fourth solenoid valves are connected via DN12 PU pipes and are connected to the upper chamber inlet of the sludge discharge lifting valve via DN15 UPVC pipes.

[0007] The coil of the first solenoid valve is connected in series with the second pair of normally open contacts of relay K1 and then connected to the power circuit. The coil of the fourth solenoid valve is connected in series with the second pair of normally open contacts of relay K3 and then connected to the power circuit. The coil of the first solenoid valve is connected in parallel with the coil of the fourth solenoid valve and in parallel with indicator light HIL1. The coil of the second solenoid valve is connected in series with the second pair of normally open contacts of relay K2 and then connected to the power circuit. The coil of the third solenoid valve is connected in series with the second pair of normally open contacts of relay K4 and then connected to the power circuit. The coil of the second solenoid valve is connected in parallel with the coil of the third solenoid valve and then in parallel with indicator light HIL2. The coil of relay K3 is connected in series with manual switch SB1 and then connected to the power circuit. The manual switch SB1 is connected in parallel with the first normally open contact of relay K1 and the series-connected relay. The first normally open contact of K3 and the normally closed contact of relay K4; the coil of relay K4 is connected in series with manual switch SB2, and the manual switch SB2 is connected in parallel with the first normally open contact of relay K2, the first normally open contact of relay K4 (connected in series), and the normally closed contact of relay K3; the first normally open contact of relay K1 and the first normally open contact of relay K2 are controlled by a remote PLC; the coil of relay K2 is connected in series with a pair of contacts of time relay KT and then in parallel with the coil of time relay KT; the coil of time relay KT is connected in series with the normally closed contact of relay K1 and then connected to the power supply circuit; the coil of relay K1 is connected in series in the power supply circuit; the normally closed contacts of relay K4 and relay K3 are connected in series and then in series with indicator light HIL3 and then connected to the power supply circuit.

[0008] A method for reversing a sludge discharge valve is implemented using the aforementioned sludge discharge valve reversing device. By manually or automatically controlling the opening of the first and fourth solenoid valves, water can be introduced into the lower chamber inlet and water can be discharged from the upper chamber inlet of the sludge discharge lifting valve; or by manually or automatically controlling the opening of the second and third solenoid valves, water can be introduced into the upper chamber inlet and water can be discharged from the lower chamber inlet of the sludge discharge lifting valve.

[0009] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0010] (1) The ball valve installed in the upper chamber of the mud discharge lifting valve of the present invention can control the number of lifting valves in operation at will, which reduces the failure rate of the mud discharge lifting valve, reduces the hidden risks, and also reduces maintenance costs.

[0011] (2) After the sludge discharge is completed, the time relay disconnects the power supply to the solenoid valve after a delay, saving energy and extending the life of the solenoid valve.

[0012] (3) In addition to controlling the mud discharge lifting valve, the present invention can also be used in the control system of diaphragm valves in oil circuits, air circuits and other systems. Attached Figure Description

[0013] Figure 1 This is a connection diagram of the present invention;

[0014] Figure 2 This is the control circuit diagram of the present invention;

[0015] Among them, 1-sludge discharge lifting valve; 11-lower chamber water inlet; 12-upper chamber water inlet. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto.

[0017] Example 1:

[0018] Combined with appendix Figure 1 As shown, a sludge discharge valve reversing device includes a first solenoid valve DCF1, a second solenoid valve DCF2, a third solenoid valve DCF3, and a fourth solenoid valve DCF4. The first ends of the first solenoid valve DCF1 and the third solenoid valve DCF3 are connected to the sludge discharge control high-pressure water inlet pipe. The second end of the first solenoid valve DCF1 is connected to the lower chamber inlet 11 of at least one sludge discharge lifting valve 1. The second end of the first solenoid valve DCF1 is also connected to the first end of the second solenoid valve DCF2. The second end of the third solenoid valve DCF3 is connected to the upper chamber inlet 12 of at least one of the sludge discharge lifting valves 1. The second end of the third solenoid valve DCF3 is also connected to the first end of the fourth solenoid valve DCF4. The second ends of the second solenoid valve DCF2 and the fourth solenoid valve DCF4 are connected to the sludge discharge control drainage pipe.

[0019] This invention allows multiple sludge discharge lifting valves to be operated by a single reversing system, reducing the failure rate of the sludge discharge lifting valves, lowering potential risks, and also reducing maintenance costs.

[0020] The first, second, third, and fourth solenoid valves are mounted on a reversing panel fixed to the pool wall. The first ends of the first and third solenoid valves are connected to the sludge discharge control high-pressure water inlet pipe via DN12 PU pipes, and the second ends of the second and fourth solenoid valves are connected to the sludge discharge control drainage pipe via DN12 PU pipes. The sludge discharge control high-pressure water inlet pipe and the sludge discharge control drainage pipe are made of DN15 UPVC pipes. The first and second solenoid valves are connected via DN12 PU pipes and are connected to the lower chamber inlet of the sludge discharge lifting valve via DN15 UPVC pipes. The third and fourth solenoid valves are connected via DN12 PU pipes and are connected to the upper chamber inlet of the sludge discharge lifting valve via DN15 UPVC pipes.

[0021] Example 2:

[0022] Based on Example 1, combined with Figure 2 As shown, the coil of the first solenoid valve is connected in series with the second pair of normally open contacts of relay K1 and then connected to the power circuit. The coil of the fourth solenoid valve is connected in series with the second pair of normally open contacts of relay K3 and then connected to the power circuit. The coil of the first solenoid valve is connected in parallel with the coil of the fourth solenoid valve and in parallel with indicator light HIL1, which indicates that the sludge discharge is on. The coil of the second solenoid valve is connected in series with the second pair of normally open contacts of relay K2 and then connected to the power circuit. The coil of the third solenoid valve is connected in series with the second pair of normally open contacts of relay K4 and then connected to the power circuit. The coil of the second solenoid valve is connected in parallel with the coil of the third solenoid valve and then in parallel with indicator light HIL2, which indicates that the sludge discharge is off. The coil of relay K3 is connected in series with manual switch SB1 and then connected to the power circuit. The manual switch SB1 is connected in parallel with the first normally open contact of relay K1. The circuit includes the first normally open contact of relay K3 and the normally closed contact of relay K4 connected in series; the coil of relay K4 is connected in series with manual switch SB2, and manual switch SB2 is connected in parallel with the first normally open contact of relay K2, the first normally open contact of relay K4 connected in series, and the normally closed contact of relay K3; the first normally open contact of relay K1 and the first normally open contact of relay K2 are controlled by a remote PLC; the coil of relay K2 is connected in series with a pair of contacts of time relay KT and then in parallel with the coil of time relay KT; the coil of time relay KT is connected in series with the normally closed contact of relay K1 and then connected to the power supply circuit; the coil of relay K1 is connected in series in the power supply circuit; the normally closed contacts of relay K4 and relay K3 are connected in series and then in series with indicator light HIL3 and then connected to the circuit circuit; indicator light HIL3 is used to indicate sludge discharge failure.

[0023] When the manual switch SB1 (located in the control box) controls the relay K3 to activate, the first solenoid valve DCF1 and the fourth solenoid valve DCF4 open, allowing water to enter the lower chamber of the sludge discharge lifting valve 1 through inlet 11 and drain water through inlet 12 of the upper chamber, thus initiating sludge discharge. When the manual switch SB2 controls the relay K4 to activate, the second solenoid valve DCF2 and the third solenoid valve DCF3 open, allowing water to enter the lower chamber of the lifting valve and drain water through the upper chamber, thus closing the lifting valve and ending sludge discharge. After manual sludge discharge is completed, a changeover switch cuts off the closing signal. During automatic sludge discharge, the PLC receives signals (controlling the second pair of normally open contacts of relay K1 and the second pair of normally open contacts of relay K2) for switching control. After sludge discharge is completed, a time relay KT delays and disconnects, cutting off the solenoid valve closing signal.

[0024] This invention features a ball valve installed in the upper chamber of the sludge discharge lifting valve, allowing for arbitrary control of the number of valves in operation and saving water. After sludge discharge is completed, a time relay delays and disconnects the power supply to the solenoid valve, saving energy and extending the solenoid valve's lifespan. Besides controlling the sludge discharge lifting valve, this invention can also be used in the control systems of diaphragm valves in oil and air circuits.

[0025] Example 3:

[0026] A method for reversing a sludge discharge valve is implemented using a sludge discharge valve reversing device as described in Embodiment 1 or 2. By manually or automatically controlling the opening of the first and fourth solenoid valves, water is introduced into the lower chamber inlet and water is discharged from the upper chamber inlet of the sludge discharge lifting valve; or by manually or automatically controlling the opening of the second and third solenoid valves, water is introduced into the upper chamber inlet and water is discharged from the lower chamber inlet of the sludge discharge lifting valve.

[0027] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can devise many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A method for reversing a mud discharge valve, characterized in that, This is achieved using a sludge discharge valve reversing device, which includes a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. The first and third solenoid valves have their first ends connected to a high-pressure water inlet pipe for sludge discharge control. The second end of the first solenoid valve is connected to the lower inlet of at least one sludge discharge lifting valve, and is also connected to the first end of the second solenoid valve. The second end of the third solenoid valve is connected to the upper inlet of at least one of the sludge discharge lifting valves, and is also connected to the first end of the fourth solenoid valve. The second ends of the second and fourth solenoid valves are connected to a sludge discharge control drainage pipe. The first, second, third, and fourth solenoid valves are mounted on a reversing surface. On the panel, the reversing panel is fixed to the pool wall. The first ends of the first and third solenoid valves are connected to the sludge discharge control high-pressure water inlet pipe via DN12 PU pipes. The second ends of the second and fourth solenoid valves are connected to the sludge discharge control drainage pipe via DN12 PU pipes. The sludge discharge control high-pressure water inlet pipe and the sludge discharge control drainage pipe are made of DN15 UPVC pipes. The first and second solenoid valves are connected via DN12 PU pipes and connected to the lower chamber inlet of the sludge discharge lifting valve via DN15 UPVC pipes. The third and fourth solenoid valves are connected via DN12 PU pipes and connected to the upper chamber inlet of the sludge discharge lifting valve via DN15 UPVC pipes. The coil of the valve is connected in series with the second pair of normally open contacts of relay K1 and then connected to the power circuit. The coil of the fourth solenoid valve is connected in series with the second pair of normally open contacts of relay K3 and then connected to the power circuit. The coil of the first solenoid valve is connected in parallel with the coil of the fourth solenoid valve and in parallel with indicator light HIL1. The coil of the second solenoid valve is connected in series with the second pair of normally open contacts of relay K2 and then connected to the power circuit. The coil of the third solenoid valve is connected in series with the second pair of normally open contacts of relay K4 and then connected to the power circuit. The coil of the second solenoid valve is connected in parallel with the coil of the third solenoid valve and then in parallel with indicator light HIL2. The coil of relay K3 is connected in series with manual switch SB1 and then connected to the power circuit. The manual switch SB1 is connected in parallel with relay K1. The first normally open contact of relay K1 and the first normally open contact of relay K3 and the normally closed contact of relay K4 are connected in series; the coil of relay K4 is connected in series with manual switch SB2, and the manual switch SB2 is connected in parallel with the first normally open contact of relay K2 and the first normally open contact of relay K4 and the normally closed contact of relay K3; the first normally open contact of relay K1 and the first normally open contact of relay K2 are controlled by a remote PLC; the coil of relay K2 is connected in series with a pair of contacts of time relay KT and then in parallel with the coil of time relay KT; the coil of time relay KT is connected in series with the normally closed contact of relay K1 and then connected to the power supply circuit; the coil of relay K1 is connected in series in the power supply circuit.The normally closed contacts of relays K4 and K3 are connected in series, and then connected in series with indicator light HIL3, which is then connected to the power supply circuit. The method is as follows: Water enters the lower chamber of the sludge discharge lifting valve and exits from the upper chamber inlet by manually or automatically controlling the opening of the first and fourth solenoid valves; or water enters the upper chamber of the sludge discharge lifting valve and exits from the lower chamber inlet by manually or automatically controlling the opening of the second and third solenoid valves.

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