CN223016539U - An automatic dosing system for waterworks - Google Patents

Abstract

The utility model discloses an automatic dosing system for a waterworks, including two stirring tanks, the two stirring tanks are connected to a medicine storage tank through pipelines, and the pipelines connecting each stirring tank and the medicine storage tank are connected from the medicine storage tank to the stirring tank in sequence, and the tops of the stirring tank and the medicine storage tank are both provided with overflow ports, and also include a water supply pipe and a pipe trench, the water supply pipe is respectively connected to the two stirring tanks, and a water supply valve is connected between the stirring tank and the water supply pipe, and the overflow ports of the stirring tank and the medicine storage tank are both arranged above the pipe trench. The automatic dosing system for a waterworks provided by the utility model is easy to install and has high stirring efficiency, and solves the problems of poor operating conditions of the agitator, high failure rate, inconvenient cleaning of the stirring tank, and complicated disassembly and assembly process in the traditional dosing method, effectively reduces the operation and maintenance costs, and improves the reliability and safety of equipment operation.

Description

Automatic dosing system of water works

Technical Field

The utility model belongs to the technical field of tap water purification, and particularly relates to an automatic dosing system for a tap water plant.

Background

The water treatment process of the water works aims at removing impurities in raw water, so that qualified factory water meeting the national standard water quality requirement is obtained. The turbidity reduction is an important production process in the water treatment process of a water works, and in the turbidity reduction treatment process, medicine adding is an important link. The chemical adding process is to add polyaluminium chloride into raw water to destabilize, precipitate and separate suspended matters, colloid, silt and the like in water, so as to achieve the aim of purifying water.

The dosing system generally consists of a stirring device and a dosing device. The stirring device is generally provided with a stirrer above a stirring pool, the polyaluminium chloride powder is dissolved in water through stirring, and the adding device is generally added by a diaphragm type metering pump in a tap water plant and is additionally provided with a series of auxiliary parts such as a buffer, a pressure gauge, a safety valve, a back pressure valve and the like.

The traditional dosing scheme of the tap water plant has the defects of poor running condition, high failure rate, inconvenient cleaning of a stirring pool and complicated disassembly and assembly process. The stirrer needs to be fixed at the middle part of the top of the water tank in the traditional stirring scheme, the stirring screw is arranged at the bottom of the water tank through the transmission rod, a special fixing support is needed, a cable is needed to surround the wall of the water tank, the stirrer and the cable are complicated to assemble and disassemble during follow-up maintenance, cleaning operation is hindered when the water tank is cleaned, and the stirring tank can be cleaned after the stirrer needs to be removed. And the agitator motor is located the pond directly over, and this is humidity big, will splash to the motor when wasing in addition, leads to ground connection or electric shock accident, and the fault rate is high, and the security is low.

And secondly, the traditional dosing scheme of the waterworks mainly adopts a mechanical diaphragm metering pump, so that the installation is complicated, the water leakage points are more, and the disassembly and the maintenance are labor-and time-consuming. The mechanical diaphragm metering pump feeding system needs a plurality of accessories such as a damper, a back pressure valve, a pressure gauge, a safety valve and the like, so that a plurality of pipeline joints are caused, the risk points of water leakage are more, the diaphragm metering pump is complex in structure, more in material consumption, high in disassembly and maintenance difficulty and long in time consumption.

Therefore, the dosing scheme provides a novel stirring process and a dosing method, and solves the defects existing in the traditional dosing scheme.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides an automatic dosing system of a tap water plant, so as to solve the problems in the traditional dosing system.

The technical purpose of the utility model is realized by the following technical scheme:

The utility model provides an automatic medicine system of adding of water works, includes two stirring ponds, two the stirring pond communicates with the medicine storage pond through the pipeline respectively, every the stirring pond with connect gradually filter, solenoid valve and UNICOM valve from medicine storage pond to stirring pond on the pipeline that the medicine storage pond is connected, the top in stirring pond and medicine storage pond all is provided with the overflow mouth, still includes moisturizing pipe and trench, moisturizing pipe communicates with two stirring ponds respectively, and is connected the moisturizing valve between stirring pond and the moisturizing pipe, the overflow mouth in stirring pond and medicine storage pond all sets up in the trench top.

Preferably, the bottom surface of the pipe ditch is an inclined surface, and one end of the pipe ditch with a lower elevation is provided with an evacuation pump.

Preferably, the medicine storage tank is provided with a medicine feeding pipe, the medicine feeding pipe is divided into two branches and then communicated with the medicine storage tank, and peristaltic metering pumps are arranged on the two branches.

Preferably, the bottoms of the two stirring tanks are provided with submersible sewage stirring pumps.

Preferably, the submersible sewage stirring pump is arranged at one end of a diagonal line of the stirring tank, and an outlet of the submersible sewage stirring pump faces to the other end of the diagonal line.

Preferably, the bottoms of the two stirring tanks are provided with blow-down pipes, and the blow-down pipes are provided with sewage pumps.

Compared with the prior art, the utility model has the following beneficial effects:

The automatic dosing system for the water works is simple and convenient to install and high in stirring efficiency, solves the problems of poor running condition, high failure rate, inconvenient cleaning of a stirring pool and complicated disassembly and assembly process of a stirrer in a traditional dosing method, effectively reduces running and maintenance cost, and improves running reliability and safety of equipment.

The peristaltic pump feeding system is simple and convenient to install, few in accessories, and capable of solving the problems of complicated installation, more water leakage points, labor and time consumption in disassembly and maintenance of the traditional mechanical diaphragm metering pump.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view of the direction of water flow in a stirred tank in accordance with the present utility model.

In the drawings, 1, a stirring pool, 2, a medicine storage pool, 3, a filter, 4, an electromagnetic valve, 5, a communicating valve, 6, an overflow port, 7, a water supplementing pipe, 8, a pipe ditch, 9, a water supplementing valve, 10, an emptying pump, 11, a medicine feeding pipe, 12, a peristaltic metering pump, 13, a submersible sewage stirring pump, 14, a blow-down pipe, 15 and a sewage pump.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As a preferred embodiment of the present utility model, as shown in fig. 1, the present embodiment provides an automatic dosing system for a water works, which comprises two stirring tanks 1, wherein the two stirring tanks 1 are respectively communicated with a medicine storage tank 2 through pipelines, each stirring tank 1 is connected with the medicine storage tank 2 through a pipeline, a filter 3, an electromagnetic valve 4 and a communication valve 5 are sequentially connected from the medicine storage tank 2 to the stirring tank 1, the tops of the stirring tank 1 and the medicine storage tank 2 are respectively provided with an overflow port 6, and further comprises a water supplementing pipe 7 and a pipe trench 8, the water supplementing pipe 7 is respectively communicated with the two stirring tanks 1, a water supplementing valve 9 is connected between the stirring tank 1 and the water supplementing pipe 7, and the overflow ports 6 of the stirring tank 1 and the medicine storage tank 2 are respectively arranged above the pipe trench 8, and overflow is directly performed in the pipe trench 8 when overflow.

In some embodiments, as shown in fig. 1, in order to facilitate the discharge of the liquid medicine overflowed in the pipe ditch 8, the bottom surface of the pipe ditch 8 is an inclined surface, and the lower end of the pipe ditch 8 at the height is provided with an evacuation pump 10, and after the overflow occurs, the pipe ditch 8 is periodically evacuated.

In some embodiments, the medicine storage tank 2 is provided with a medicine feeding pipe 11, the medicine feeding pipe 11 is divided into two branches and then is communicated with the medicine storage tank 2, and peristaltic metering pumps 12 are arranged on the two branches, in this embodiment, the two branches and the peristaltic metering pumps 12 are designed in a standby mode, so that the medicine is not affected by the faults of the peristaltic metering pumps 12 when the medicine is added into raw water.

In some preferred embodiments, the bottom of both stirring tanks 1 is provided with a submersible sewage pump 13. The submersible sewage stirring pump 13 is provided with a low-lift stainless steel submersible sewage pump at the bottom of the stirring tank, the submersible sewage stirring pump 13 is used for rapidly pumping a solution with higher concentration at the bottom to the upper part of the water tank, so that the mixing efficiency is higher.

In this embodiment, when the stirring tank is used for supplementing water and medicine, taking the 1# stirring tank as an example, firstly, the water supplementing valve 9 is opened, after the liquid level of the stirring tank rises to the set water level, the water supplementing valve 9 is closed to stop supplementing water, the submerged sewage stirring pump 13 is started, meanwhile, the polyaluminum chloride medicine is supplemented according to 5% concentration, the stirring of the medicine liquid is started, after the set time is reached, the submerged sewage stirring pump 13 stops stirring, the medicine liquid is started to stand, after the set time is reached, the medicine liquid is kept still, at this time, the medicine liquid in the stirring tank 1 reaches a usable state, and medicine can be supplemented for the medicine storage tank 1 according to requirements. The stirring tank 1 is provided with an overflow port 6, when a liquid level exceeds an upper limit due to failure of a water supplementing valve 7 or unattended operation, excessive liquid is overflowed into a pipe ditch 8 through the overflow port, so that the stirring tank 1 is ensured not to have a water overflow accident, after the liquid level in the pipe ditch 8 reaches a set upper limit, an evacuation pump 10 is started to discharge waste water in the pipe ditch 8 to a recovery device, and when the stirring tank 1 needs to be cleaned, a sewage pump 15 can be opened to discharge liquid medicine in the tank to the pipe ditch 8 so as to clean the water tank.

The stirring tank 1 is communicated with the medicine storage tank 2 through a pipeline, a communicating valve 5 is arranged, the valve is normally open, medicine supplementing is started when the liquid level of the medicine storage tank 2 reaches the lower limit, the electromagnetic valve 4 is opened, medicine liquid enters the medicine storage tank 2 through the communicating valve 5, the electromagnetic valve 4 and the filter 3, when the liquid level of the medicine storage tank 2 reaches the upper limit, the electromagnetic valve 4 is closed, medicine supplementing of the medicine storage tank 2 is finished, the medicine storage tank 2 is provided with an overflow port, and when the failure of the electromagnetic valve 4 can not stop medicine supplementing, the excessive medicine liquid can overflow to the pipe ditch 8, so that the medicine liquid in the medicine storage tank is prevented from overflowing accidents.

In some embodiments, as shown in fig. 2, the submersible sewage pump 13 is disposed at one end of the diagonal of the agitation tank 1, and the outlet of the submersible sewage pump 13 is directed toward the other end of the diagonal. The submersible sewage stirring pump 13 is arranged at the corner of the bottom of the pool, large-particle hardening medicament can be scattered through a high-speed impeller and sprayed to the upper layer in the pool, and the medicament is quickly and uniformly dissolved through convection.

In some preferred embodiments, the bottom of each stirring tank 1 is provided with a blow-down pipe 14, and a blow-down pump 15 is arranged on the blow-down pipe 14 so as to facilitate the evacuation and cleaning of the stirring tank 1.

In actual use, when the turbidity of raw water in a water works reaches the set upper limit through on-line monitoring, dosing is started, the PLC automatically calculates dosing flow according to the turbidity of raw water and a default formula, the dosing flow is converted into frequency and then is given to the peristaltic metering pump 12, the two peristaltic metering pumps are mutually standby, and dosing of the peristaltic metering pump is automatically selected according to running time and throwing and retreating conditions. The PLC automatically calculates the dosing amount according to the change of the turbidity of the raw water, and the peristaltic pump frequency is set in real time, so that the dosing amount changes in real time along with the turbidity of the raw water, the optimal dosing effect is achieved, and the turbidity of the factory water of a running water plant is ensured to be in an excellent range all the time. The automatic dosing system of the running water plant adopts a full-automatic dosing process, an automatic process is adopted from the start to the stop of dosing, the dosing flow is automatically regulated according to the turbidity of raw water, the labor cost in the operation of the dosing system is greatly reduced, the reliability and the accuracy are high, the dosing can be carried out in advance before the turbidity of the factory water exceeds the standard by monitoring the turbidity of the raw water, the dosing flow is automatically regulated according to the turbidity change, and the factory water turbidity of the running water plant is ensured to be kept in an excellent range.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (6)

1. The automatic dosing system for the water works is characterized by comprising two stirring tanks, wherein the two stirring tanks are respectively communicated with a medicine storage tank through pipelines, each stirring tank is connected with the medicine storage tank through a pipeline, a filter, an electromagnetic valve and a communication valve are sequentially connected from the medicine storage tank to the stirring tank, overflow ports are formed in the tops of the stirring tank and the medicine storage tank, the automatic dosing system also comprises a water supplementing pipe and a pipe ditch, the water supplementing pipe is respectively communicated with the two stirring tanks, a water supplementing valve is connected between the stirring tank and the water supplementing pipe, and the overflow ports of the stirring tank and the medicine storage tank are all arranged above the pipe ditch.

2. The automatic dosing system for a water works according to claim 1, wherein the bottom surface of the pipe trench is an inclined surface, and an evacuation pump is arranged at the lower end of the pipe trench.

3. The automatic dosing system for a water works according to claim 1, wherein the dosing tank is provided with a dosing pipe, the dosing pipe is divided into two branches and is communicated with the dosing tank, and peristaltic metering pumps are arranged on the two branches.

4. The automatic dosing system for a water works according to claim 1, wherein the bottoms of the two stirring tanks are provided with submersible sewage stirring pumps.

5. The automatic dosing system for a water works according to claim 4, wherein the submersible sewage pump is arranged at one end of a diagonal line of the stirring tank, and an outlet of the submersible sewage pump faces the other end of the diagonal line.

6. The automatic dosing system for a water works according to claim 1, wherein the bottoms of the two stirring tanks are provided with blow-down pipes, and the blow-down pipes are provided with blow-down pumps.