Waterworks coagulant water adding device

Abstract

The utility model relates to a water treatment auxiliary equipment technical field, and a waterworks coagulant water adding device, including jar body, electromagnetic valve, liquid level switch, electric stirring mechanism, coagulant water stock solution jar, still have trigger circuit and control circuit, the upper jar body is as mixing jar, the middle jar body is as emergency jar, the lower jar body is as finished product jar, coagulant water stock solution jar lower end installation is located in jar body side end, electromagnetic valve, first liquid level switch, electric stirring mechanism install on jar body, second liquid level switch installs on coagulant water stock solution jar, trigger circuit and control circuit fixed mounting in control box and electrically connected, the utility model can automatically inject mixed coagulant water for finished product jar, and can add coagulant water stock solution and water in mixing jar and stir to generate mixed liquid, guarantees that the tap raw water pool treats tap water to the demand basis of mixed liquid, also saves manual and cost, and when the liquid amount in coagulant water stock solution jar is certain, can prompt staff to add.

Description

Technical Field

[0001] This utility model relates to the field of water treatment auxiliary equipment technology, and in particular to a coagulant water addition device for waterworks. Background Technology

[0002] Coagulants are chemical agents used in water treatment to destabilize colloidal particles in water and cause them to aggregate into flocs. Common types include aluminum salts, iron salts, and polymeric substances. Specifically, coagulants destabilize colloidal particles in water through methods such as charge neutralization or adsorption bridging, causing them to aggregate into fine flocs. For example, inorganic coagulants such as polyaluminum chloride achieve destabilization by neutralizing the negative charge on the particle surface through hydrolysis products, while organic polymeric coagulants such as polyacrylamide achieve bridging and coagulation through chain structures.

[0003] Manually adding coagulant water to the raw water tank is a common method, but it increases production costs due to the manual labor involved and is therefore rarely used. Existing waterworks generally use a supervisory control system (SCADA) to add coagulant water to the raw water tank. Specifically, multiple interconnected spray nozzles are located above the raw water tank, with nozzles positioned on the tank surface. One end of each spray nozzle is connected in series with the outlet of the coagulant water tank via a solenoid valve. The SCADA system, based on production schedules, controls the solenoid valve to open at regular intervals, injecting coagulant water into the raw water tank. Because this method achieves automatic control and reduces labor costs, it is likely to be more widely used. While existing coagulant water injection equipment meets practical production needs to some extent, it still faces some technical challenges due to structural and functional limitations. Specifically, because workers need to manually add diluted coagulant solution (coagulant and some water premixed) and water to the coagulant tank, and then start the mixing equipment to stir the mixture in the tank, this still causes inconvenience to workers and increases production costs. Furthermore, when the coagulant solution volume decreases or even runs out, there is a possibility that untreated tap water may be supplied to users without notification from relevant management personnel, posing a safety hazard to users. Utility Model Content

[0004] To overcome the shortcomings of existing coagulant water addition equipment used in waterworks, which suffer from structural limitations as described in the background art, this utility model provides a device that, through the combined action of relevant mechanisms, automatically injects mixed coagulant water into the finished product tank when the liquid level in the coagulant water tank drops to a certain level. It also adds coagulant water concentrate and an appropriate amount of water to the mixing tank to generate a mixed liquid. This ensures that the raw water tank meets the mixed liquid requirements for treating tap water, while saving labor and production costs. Furthermore, in extreme cases, when the liquid level in the coagulant water concentrate tank drops to a certain level, it promptly alerts staff to add more coagulant water, ensuring that the tap water used by users is effectively treated with coagulant water.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A coagulant water addition device for a waterworks includes a tank, solenoid valves, a level switch, an electric stirring mechanism, and a coagulant water raw material tank. Multiple solenoid valves are included, along with triggering and control circuits. The tank is internally fitted with partitions at intervals. The upper tank serves as a mixing tank, the middle tank as an emergency tank, and the lower tank as a finished product tank. The lower end of the coagulant water raw material tank is mounted at a high position on the side of the tank. One lower end of the finished product tank is fixedly connected to one end of one of the solenoid valves, and the other end of one of the solenoid valves is fixedly connected in parallel to one end of multiple spray pipes at the upper end of the raw water tank via a pipeline. A bearing is fixedly installed at the lower end of the mixing tank. The housing of the electric stirring mechanism is fixedly installed on the upper outer side of the mixing tank, and the lower end of the stirring shaft of the electric stirring mechanism is fixedly installed inside the inner ring of the bearing. Connecting pipes are fixedly installed on both sides of the upper end of the mixing tank. The outer ends of two connecting pipes and the second... One end of the solenoid valve and one end of the third solenoid valve are fixedly connected. The other ends of the second and third solenoid valves are fixedly connected to the outlet pipe and the tap water pipe of the coagulant water raw material tank, respectively. One side of the lower end of the mixing tank is fixedly connected to one end of the fourth solenoid valve, and the lower end of the emergency tank is fixedly connected to one end of the fifth solenoid valve. There are two level switches. The first level switch is installed in the lower part of the coagulant water finished product tank, and the second level switch is installed in the lower part of the coagulant water raw material tank. The trigger circuit and the control circuit are fixedly installed in the control box. The two terminals of the first level switch are electrically connected in series between the two signal input terminals of the control circuit. The power output terminal of the control circuit is electrically connected to the power input terminal of the second, third, fourth, and fifth solenoid valves and the electric stirring mechanism. The power output terminal of the trigger circuit is electrically connected to the power input terminal of the control circuit.

[0006] Furthermore, the solenoid valve is a normally closed valve core solenoid valve.

[0007] Furthermore, the other end of the fourth solenoid valve is located at the upper end of the emergency tank, and the other end of the fifth solenoid valve is located at the upper end of the coagulant water finished product tank.

[0008] Furthermore, the triggering circuit includes a time relay module and a relay that are electrically connected. The positive power input terminal of the time relay module is connected to the control power input terminal of the relay, the power output terminal of the time relay module is connected to the positive power input terminal of the relay, and the negative power input terminal and the negative control power input terminal of the time relay module are connected to the negative power input terminal of the relay.

[0009] Furthermore, the control circuit includes four sets of time control switches electrically connected via circuit board wiring, with the negative power input terminals of the four sets of time control switches connected and the positive power input terminals of the four sets of time control switches connected.

[0010] Furthermore, the second level switch is equipped with an alarm. The positive power input terminal of the alarm is connected to the power output terminal of the second level switch, and the power input terminals of the fifth solenoid valve are respectively connected to the power output terminal of a power switch via wires.

[0011] Compared with the prior art, the advantages of this utility model are: (1) In this utility model, as with the prior art, the host computer controls the first solenoid valve to open for a period of time according to the production rules, and sprays coagulant water into the raw water tank at regular intervals. (2) When the liquid in the finished coagulant water tank is low to a certain extent, this utility model can add coagulant water stock solution and appropriate amount of water to the mixing tank to generate mixed liquid. After mixing, the liquid enters the emergency tank and the finished product tank, and automatically injects the mixed coagulant water into the finished product tank and the emergency tank. This ensures that the raw water tank can treat the tap water for mixed liquid, and also saves labor and production costs. In extreme cases, when the liquid in the coagulant water stock solution tank is low to a certain amount, it can promptly remind the staff to add more, ensuring that the tap water used by users can be effectively treated with coagulant water, and realizing safe and hygienic water supply. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is the circuit diagram of this utility model. Detailed Implementation

[0015] Figure 1 , 2As shown, a coagulant water addition device for a waterworks includes a tank 1, solenoid valves, a power module W1, level switches S1 and S2, an electric stirring mechanism M, and a coagulant water raw material tank 2. There are five solenoid valves, one of which, DC1, has its power input terminal connected to the control power output terminal of a host computer (not shown in the figure) via a wire. It also includes a trigger circuit 3 and a control circuit 4. Two partition plates 8 are welded to the inner middle of the tank 1 at a distance from each other. The upper space within the tank of the upper partition plate serves as a mixing tank 5, the space between the two partition plates serves as an emergency tank 6, and the lower space within the tank of the lower partition plate serves as a finished coagulant water tank 7. The coagulant water raw material tank... The lower end of tank 2 is fixedly installed on the frame (not shown in the figure) located on the left side of tank 1, and the lower end of coagulant water raw liquid tank 2 is higher than the height of tank 1; a fixing plate is fixedly installed on the lower outer end of the coagulant water finished product tank 7, and the lower right end pipe of the coagulant water finished product tank 7 is fixedly connected to one end of one of the solenoid valves DC1, and the other end of one of the solenoid valves DC1 is fixedly connected to one end of one of the multiple spray pipes (not shown in the figure) at the upper end of the tap water raw water tank through a pipe; there is an opening in the middle of the upper end of the mixing tank 5, and a stainless steel bearing seat 9 is fixedly installed in the lower end of the mixing tank 5, and the lower end of the motor reduction gear housing of the electric stirring mechanism M is sealed and fixedly installed. The upper end of the stirring shaft of the electric stirring mechanism M, mounted on the upper middle part of the mixing tank 5, rotates within the opening. The lower end of the stirring shaft is fixedly installed in the inner ring of the bearing seat 9. A connecting pipe 10, communicating with the inside of the mixing tank 5, is fixedly installed on each of the upper sides of the mixing tank 5. The outer ends of the two connecting pipes 10 are threadedly connected to one end of the second solenoid valve DC2 and one end of the third solenoid valve DC3, respectively. The other ends of the second solenoid valve DC2 and the third solenoid valve DC3 are threadedly connected to the outlet pipe of the coagulant water raw material tank 2 and the tap water pipe (not shown in the figure), respectively. There is an opening on the lower left side of the mixing tank 5, and an opening is located in the middle of the lower part of the emergency tank 6. There are two openings. A first branch pipe is fixedly installed at the lower end of the opening of the mixing tank 5. One end of the fourth solenoid valve DC4 is fixedly connected to the lower end of the first branch pipe. A second branch pipe is fixedly installed on the lower side of the opening in the middle of the lower end of the emergency tank 6. The lower end of the second branch pipe is fixedly connected to one end of the fifth solenoid valve DC5. There are two liquid level switches. The first liquid level switch S1 is installed at the lower fifth position of the coagulant water finished product tank 7. The second liquid level switch S2 is installed at the lower sixth position of the side wall of the coagulant water raw liquid tank 2. The power module W1, the trigger circuit 3 and the control circuit 4 are fixedly installed on the circuit board inside the control box 11. The control box 11 is fixedly installed in the middle of the front outer end of the tank body 1.

[0016] Figure 1 , 2As shown, solenoid valves DC1, DC2, DC3, DC4, and DC5 are waterproof, normally closed solenoid valves. The other end of the fourth solenoid valve, DC4, is located at the upper left end inside emergency tank 6, and the other end of the fifth solenoid valve, DC5, is located at the upper middle part of the coagulant water finished product tank 2. The trigger circuit includes time relay modules W2 and J1 connected via circuit board wiring. The positive power input terminal (pin 1) of time relay module W2 is connected to the control power input terminal of relay J1. The power output terminal (pin 5) of time relay module W2 is connected to the positive power input terminal of relay J1. The negative power input terminal (pin 2) and negative control power input terminal (pin 4) of time relay module W2 are connected to the negative power input terminal of relay J1. The control circuit includes four sets of time control switches W3, W4, W5, and W6 connected via circuit board wiring. The negative power input terminals (pin 2) and positive power input terminals (pin 1) of the four sets of time control switches W3, W4, W5, and W6 are connected. The second level switch S2 is equipped with an alarm B. The positive power input terminal of the alarm B is connected to the power output terminal of the second level switch S2. The power input terminal of the second level switch S2, the negative power input terminal of the alarm B, and the power output terminals 3 and 4 of the power module W1 are respectively connected. The power input terminals of the fifth solenoid valve DC5 are respectively connected to the power output terminals 3 and 4 of a power switch K (the handle is located outside the opening at the front of the control box) via wires. The power input terminals 1 and 2 of the power switch K are connected to the power output terminals 3 and 4 of the power module W1 via wires.

[0017] Figure 1 , 2 As shown, the power input terminals 1 and 2 of power module W1 are connected to the two poles of the 220V AC power supply via wires. The power output terminals 3 and 4 of power module W1 are connected to the power input terminals of the trigger circuit, the control power input terminal and negative power input terminal of relay J1, and the power input terminal of the control circuit. The time switch 1 and 2 are connected via wires. The two terminals of the first liquid level switch S1 are connected in series via wires between the two signal input terminals of the trigger circuit and the time relay module W2 (positive control power input terminal). The power output terminals 3 and 4 of time switch W3 are connected to the power input terminals of solenoid valves DC4 and DC5 via wires. The power output terminals 3 and 4 of time switches W4 and W5 are connected to the power input terminals of solenoid valves DC2 and DC3 via wires. The power output terminals 3 and 4 of time switch W6 are connected to the power input terminal of the electric stirring mechanism M via wires. The power input terminals of the control circuit, pins 1 and 2 of the time switch W3, the normally open contact of the relay J1, and the negative power input terminal are connected by wires.

[0018] Figure 1 , 2As shown, this invention is otherwise similar to existing technologies. The host computer, based on production schedules, controls the first solenoid valve DC1 to open for a period of time, injecting coagulant water into the raw water tank. In this invention, after the 220V power supply enters the power input terminals 1 and 2 of the power module, the power module W1 outputs a stable 12V DC power supply through pins 3 and 4, which then enters the power input terminal of the trigger circuit. When the liquid level in the finished product tank 7 exceeds one-fifth of its capacity, the internal contacts of the level switch S1 open, preventing the time relay module W2 from outputting power at pin 5, thus de-energizing all solenoid valves. When the liquid level in the finished product tank 7 is less than one-fifth of its capacity, the internal contacts of the level switch S1 close, resulting in a high-level signal input to pin 3 of the time relay module W2. Pin 5 of the time relay module W2 outputs eight minutes of power, energizing relay J1 and closing its control power input terminal and normally open contact. This energizes the time control switches W3, W4, W5, and W6. After time switches W4 and W5 are energized, their pins 3 and 4 will output power for three minutes each to the power input terminals of solenoid valves DC2 and DC3. The solenoid valves DC2 and DC3 will then open, allowing tap water (whose flow rate is pre-regulated by a valve on the tap water pipe) and coagulant concentrate (whose flow rate is pre-regulated by a valve on the outlet pipe of coagulant concentrate tank 2) to flow into mixing tank 5. After three minutes, the flow of tap water and coagulant concentrate (the mixed liquid occupies four-fifths of the mixing tank) will stop. After time switch W6 is energized, its pins 3 and 4 will output power for two minutes at three-minute intervals to the power input terminal of electric stirring mechanism M. Electric stirring mechanism M will then operate, stirring the liquid in the mixing tank until it is homogeneous. After the timer switch W3 is energized, its pins 3 and 4 output power for three minutes every five minutes, which is then supplied to the power input terminals of solenoid valves DC4 and DC5. This energizes solenoid valves DC4 and DC5, opening their valve cores. This allows all the mixed liquid in the mixing tank to flow into the emergency tank and the finished product tank, preparing for the next energization of solenoid valve DC1 by the host computer, which then opens its valve core to output coagulant water. Three minutes later, solenoid valves DC4 and DC5 are de-energized and close their valve cores. At this point, emergency tank 6 will also be full of mixed coagulant water. When the volume of coagulant water stock solution exceeds one-sixth of the lower side wall of coagulant water stock solution tank 2, the internal contacts of level switch S2 will not close. Therefore, alarm B will not be energized and will not sound, indicating that coagulant water stock solution tank 2 does not need to be added temporarily. When the volume of coagulant water stock solution is less than one-sixth of the lower side wall of the coagulant water stock solution tank 2, the internal contacts of the level switch S2 will close. This will energize the alarm B and cause it to sound, indicating that coagulant water needs to be added to the coagulant water stock solution tank 2. After hearing the sound, the staff can add coagulant water stock solution to the coagulant water stock solution tank 2 in a timely manner.The purpose of this new emergency tank design is to ensure that, in extreme circumstances (including maintenance), when the mixing tank stops receiving tap water and coagulant concentrate (e.g., when solenoid valves DC2 and DC3 malfunction, or when the tap water pipeline and coagulant concentrate tank 2 stop supplying liquid), and there is no mixed liquid in the finished product tank, the operator can turn on the power switch K. This will energize solenoid valve DC5, opening the valve core and allowing the liquid in the emergency tank to enter the finished product tank. This ensures that the tap water can still receive the mixed liquid before the tap water pipeline and coagulant concentrate tank 2 resume supplying liquid.

[0019] Figure 1 , 2 As shown above, this new invention can, when the liquid level in the coagulant water finished product tank drops to a certain level, add coagulant water concentrate and an appropriate amount of water to the mixing tank to generate a mixed liquid. The mixed liquid then enters the emergency tank and the finished product tank, automatically injecting the mixed coagulant water into both. This ensures that the tap water treatment system meets the mixed liquid requirements while saving labor and production costs. Furthermore, in extreme cases, when the liquid level in the coagulant water concentrate tank drops to a certain level, it can promptly alert staff to add more, ensuring that the tap water used by users is effectively treated with coagulant water, guaranteeing a safe and hygienic water supply. In this new invention, multiple water tanks can also be used instead of the original tank. Figure 2 In this system, power module W1 is a finished product of AC 220V to DC 12V power module; relay J1 is model DC 12V; time relay module W2 is a finished product of model YYS-2 time relay module, which has two power input terminals, two control signal input terminals, one power output terminal, and four setting buttons. Through the four setting buttons, the time for the power output terminal to output power after each high or low level signal input from the two control signal input terminals can be set; solenoid valves DC1, DC2, DC3, DC4, and DC5 have a power of 2W (waterproof solenoid valves); time control switches W3, W4, W5, and W6 are model KG316T time controllers, which have two power input terminals, two power output terminals, and seven setting buttons. Through the seven setting buttons, the time for the two power output terminals to output power after the two power input terminals are energized can be set; alarm B is a finished product of high-decibel alarm; level switches S1 and S2 are finished products of float-type normally closed contact level switches.

[0020] Those skilled in the art should understand that although this specification describes embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. Therefore, the scope of protection of this application is defined by the claims.

Claims

1. A device for adding coagulant water to a waterworks, comprising a tank, solenoid valves, a level switch, an electric stirring mechanism, and a coagulant water stock solution tank, wherein there are multiple solenoid valves, characterized in that... It also has a trigger circuit and a control circuit; the interior of the tank is fixedly equipped with isolation plates at intervals, the upper tank serves as a mixing tank, the middle tank serves as an emergency tank, and the lower tank serves as a finished product tank. The lower end of the coagulant water raw material tank is installed at a high position on the side of the tank; the lower end of one side of the finished product tank is fixedly connected to one end of one of the solenoid valves, and the other end of one of the solenoid valves is fixedly connected to one end of one of the multiple spray pipes at the upper end of the raw water tank via a pipeline; a bearing is fixedly installed at the lower end of the mixing tank, the housing of the electric stirring mechanism is fixedly installed at the upper end of the mixing tank, and the lower end of the stirring shaft of the electric stirring mechanism is fixedly installed in the inner ring of the bearing; connecting pipes are fixedly installed on both sides of the upper end of the mixing tank, and the outer ends of the two connecting pipes are fixedly connected to one end of the second solenoid valve and one end of the third solenoid valve, respectively. The other end of the solenoid valve, the other end of the third solenoid valve, and the outlet pipe and tap water pipe of the coagulant water raw material tank are fixedly connected respectively; the lower end of the mixing tank is fixedly connected to one end of the fourth solenoid valve, and the lower end of the emergency tank is fixedly connected to one end of the fifth solenoid valve; there are two level switches, the first level switch is installed in the lower part of the coagulant water finished product tank, and the second level switch is installed in the lower part of the coagulant water raw material tank. The trigger circuit and the control circuit are fixedly installed in the control box; the two terminals of the first level switch are electrically connected in series between the two signal input terminals of the control circuit, the power output terminal of the control circuit is electrically connected to the power input terminal of the second, third, fourth, and fifth solenoid valves and the electric stirring mechanism, and the power output terminal of the trigger circuit is electrically connected to the power input terminal of the control circuit.

2. The coagulant water addition device for a waterworks according to claim 1, characterized in that, The solenoid valve is a normally closed solenoid valve with a spool.

3. The coagulant water addition device for a waterworks according to claim 1, characterized in that, The other end of the fourth solenoid valve is located at the top of the emergency tank, and the other end of the fifth solenoid valve is located at the top of the coagulant water finished product tank.

4. The coagulant water addition device for a waterworks according to claim 1, characterized in that, The trigger circuit includes a time relay module and a relay that are electrically connected. The positive power input terminal of the time relay module is connected to the control power input terminal of the relay, the power output terminal of the time relay module is connected to the positive power input terminal of the relay, and the negative power input terminal and the negative control power input terminal of the time relay module are connected to the negative power input terminal of the relay.

5. A coagulant water addition device for a waterworks according to claim 1, characterized in that, The control circuit includes four sets of time switches electrically connected via circuit board wiring. The negative power input terminals of the four sets of time switches are connected, and the positive power input terminals of the four sets of time switches are connected.

6. A coagulant water addition device for a waterworks according to claim 1, characterized in that, The second level switch is equipped with an alarm. The positive power input terminal of the alarm is connected to the power output terminal of the second level switch. The power input terminals of the fifth solenoid valve are respectively connected to the power output terminal of a power switch via wires.

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