High-efficiency tank coagulation zone PAC agent adding control device

Abstract

The utility model provides a high-efficiency pool coagulation zone PAC agent adding control device. The adding control device comprises a PLC, an adjusting pool, a mixing pool used for agent premixing and a plurality of diaphragm pumps used for adding agents into the mixing pool. A plurality of lifting pumps for pumping sewage in the regulating tank and lifting the sewage to the mixing tank are arranged at the regulating tank; the PLC controls the opening and closing states of the diaphragm pumps and the lifting pumps, so that the starting number of the diaphragm pumps is synchronously increased or decreased according to the starting number of the lifting pumps, and the chemical adding amount in the mixing pool can be synchronously increased or decreased; an overflow opening is formed in the edge of the mixing tank, and when the liquid level in the mixing tank rises to the overflow opening, liquid mixed with chemicals in the mixing tank flows to an external coagulation area through the overflow opening; the device can accurately control the dosage of the PAC medicament in the sewage purification treatment operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification technical field especially is high -efficient pool coagulation area PAC reagent dosing control device. BACKGROUND

[0002] PAC reagent is often used for high -efficient water purification, but in water purification engineering, the water capacity of coagulation area of different high -efficient pools is different, and there may be a situation that one side is more and the other side is less in adjacent two groups of high -efficient pool reagent dosing, and the reagent dosage may not be accurately controlled when manually adding reagent, and the above problems need to be improved. INNOVATION CONTENT

[0003] The utility model discloses high -efficient pool coagulation area PAC reagent dosing control device can accurately control the PAC reagent dosing quantity in sewage purification treatment operation.

[0004] The utility model discloses the following technical scheme.

[0005] High -efficient pool coagulation area PAC reagent dosing control device, the dosing control device includes PLC, adjusting pool, the mixing pool for reagent premixing and a plurality of diaphragm pumps for adding reagent to the mixing pool, the adjusting pool is equipped with multiple lifting pumps for pumping out the sewage of adjusting pool and lifting to the mixing pool, and PLC controls the opening and closing state of each diaphragm pump, each lifting pump makes the starting number of diaphragm pump increase and decrease and synchronously increase and decrease with the starting number of lifting pump to make the reagent addition amount in the mixing pool can synchronously increase and decrease, the mixing pool edge is equipped with overflow, when the liquid level in the mixing pool rises to the overflow, the liquid mixed with reagent in the mixing pool flows to the coagulation area outside through the overflow.

[0006] The power supply circuit of each diaphragm pump, each lifting pump is equipped with relay for outputting on -off quantity to PLC, when the opening and closing state of each diaphragm pump, each lifting pump changes, and the on -off quantity that relay outputs to PLC changes synchronously.

[0007] The diaphragm pump is connected with frequency converter, the frequency converter is connected with PLC, and the frequency converter adjusts the output flow of diaphragm pump according to the control instruction of PLC.

[0008] The number of diaphragm pump is even, and every two diaphragm pumps are combined into a diaphragm pump group connected with frequency converter according to one main one backup working condition.

[0009] The mixing pool is corresponding with coagulation area, and the reagent of adjacent coagulation area is provided by the liquid mixed with reagent in the mixing pool adjacent thereto, and each mixing pool is dosed with PAC reagent for water purification in the water in the pool by a dedicated diaphragm pump group.

[0010] Each lifting pump is arranged in the adjusting pool secondary lifting pump room at the adjusting pool.

[0011] In the utility model, the medicament addition of each high-efficiency pool coagulation area is controlled by the corresponding diaphragm pump set, and the number of diaphragm pump starts is increased or decreased synchronously according to the number of lift pump starts, so that the liquid level of the coagulation area can be controlled by the lift pump, the amount of medicament is strictly controlled according to the high-efficiency pool liquid level working condition, PAC medicament is saved, and the amount of medicament of each adjacent coagulation area can be made more uniform through the control of the number of lift pump starts. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be explained in further detail in connection with the drawings and specific embodiments:

[0013] ATTACHED Figure 1 It is the schematic diagram of the utility model;

[0014] In the drawing: 1-mixing pool; 2-overflow; 3-coagulation area; 4-diaphragm pump; 5-frequency converter; 6-lift pump; 7-adjustment pool secondary lift pump house; 8-adjustment pool. SPECIFIC EMBODIMENT

[0015] As Figure 1 Shown, high-efficiency pool coagulation area PAC medicament dosing control device, the dosing control device includes PLC, adjustment pool 8, for medicament premixing mixing pool 1 and multiple for adding medicament to mixing pool diaphragm pump;The adjustment pool is equipped with multiple lift pumps 6 for pumping the sewage of the adjustment pool and lifting to the mixing pool;PLC controls the opening and closing state of each diaphragm pump 4, each lift pump, makes the number of diaphragm pump starts synchronous increase or decrease according to the number of lift pump starts, so that the amount of medicament in the mixing pool can be synchronous increase or decrease;The edge of the mixing pool is equipped with an overflow, when the liquid level in the mixing pool rises to the overflow 2, the liquid mixed with medicament in the mixing pool flows to the external coagulation area 3 through the overflow.

[0016] The power supply circuit of each diaphragm pump and each lift pump is equipped with a relay for outputting an on-off value to PLC, and when the opening and closing state of each diaphragm pump and each lift pump is changed, the on-off value output by the relay to PLC is changed synchronously.

[0017] The diaphragm pump is connected with the frequency converter 5, the frequency converter is connected with the PLC, and the frequency converter adjusts the output flow of the diaphragm pump according to the control instruction of the PLC.

[0018] The number of diaphragm pumps is even, and each two diaphragm pumps are combined into a diaphragm pump set connected with a frequency converter according to the working condition of one main and one backup.

[0019] The mixing pool corresponds to the coagulation area one by one, and the medicament of the adjacent coagulation area is provided by the liquid mixed with medicament in the adjacent mixing pool, and each mixing pool is added with PAC medicament for water purification by a dedicated diaphragm pump set.

[0020] Each of the booster pumps is arranged in the adjusting pool secondary booster pump room 7 at the adjusting pool.

[0021] Embodiment:

[0022] The sewage in the adjusting pool is lifted to the mixing pool by the booster pumps in the adjusting pool secondary booster pump room. The PLC starts the corresponding number of diaphragm pumps according to the switch quantity sent by the booster pumps in the starting state, and works according to the pre-burned firmware. The frequency converter is controlled according to the switch quantity sent by the booster pumps to express whether it is in the working state, and the PWM signal sent by the frequency converter is used to control the medicine sending quantity of the diaphragm pump. The medicine added by the diaphragm pump into the mixing pool is used as a water purifying agent or a flocculating agent, which is preliminarily mixed and dissolved with the sewage. When the liquid level of the sewage in the mixing pool rises to the overflow port 2, the liquid mixed with the medicine in the mixing pool flows to the external coagulation area through the overflow port, and the sewage in the coagulation area is treated.

[0023] In this example, the high-efficiency pool is divided into multiple coagulation areas, and the positions of the mixing pools corresponding to the adjacent coagulation areas are also adjacent, so that the sewage injection quantities of the adjacent mixing pools are the same, and the medicine adding quantities are also the same.

Claims

1. A PAC dosing control device for high-efficiency pool coagulation zone, characterized in that: The dosing control device comprises a PLC, a regulating tank, a mixing tank for pre-mixing of the chemicals, and a plurality of diaphragm pumps for adding chemicals to the mixing tank; a plurality of lifting pumps are arranged at the regulating tank for pumping and lifting the sewage in the regulating tank to the mixing tank; the PLC controls the on-off state of each diaphragm pump and each lifting pump, so that the number of activated diaphragm pumps is increased or decreased synchronously with the number of activated lifting pumps, so that the amount of chemicals added in the mixing tank can be increased or decreased synchronously; an overflow port is arranged at the edge of the mixing tank, and when the liquid level in the mixing tank rises to the overflow port, the liquid mixed with chemicals in the mixing tank flows to the coagulation area outside through the overflow port.

2. The efficient pool coagulation zone PAC reagent dosing control device according to claim 1, characterized in that: The power supply circuit of each diaphragm pump and each lifting pump is provided with a relay for outputting an on-off value to the PLC, and when the on-off state of each diaphragm pump and each lifting pump is changed, the on-off value output by the relay to the PLC is changed synchronously.

3. The PAC dosing control device for high-efficiency pool coagulation zone according to claim 1, characterized in that: The diaphragm pump is connected with a frequency converter, and the frequency converter is connected with the PLC, and the frequency converter adjusts the output flow of the diaphragm pump according to the control instruction of the PLC.

4. The PAC dosing control device for high-efficiency pool coagulation zone according to claim 3, characterized in that: The number of diaphragm pumps is even, and each two diaphragm pumps are combined as a diaphragm pump group connected with the frequency converter according to the working conditions of one main and one backup.

5. The efficient pool coagulation zone PAC reagent dosing control device according to claim 4, characterized in that: The mixing tank corresponds to the coagulation area one by one, and the chemicals of the adjacent coagulation area are provided by the liquid mixed with chemicals in the adjacent mixing tank, and each mixing tank is added with PAC chemicals for water purification by a dedicated diaphragm pump group.

6. The efficient pool coagulation zone PAC dosing control device according to claim 1, characterized in that: Each lifting pump is arranged in the secondary lifting pump room of the regulating tank.

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