CN212833120U

CN212833120U - Intelligent pure water backflow water-saving system

Info

Publication number: CN212833120U
Application number: CN202021540418.9U
Authority: CN
Inventors: 刘克武
Original assignee: Chongqing Bochuang Water Treatment Equipment Co ltd
Current assignee: Chongqing Bochuang Water Treatment Equipment Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-30
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a pure water intelligence backward flow water saving system, including controlling means to and the raw water pump, pretreatment systems, balancer, high-pressure pump and the reverse osmosis system that connect gradually, reverse osmosis system's delivery port is connected to the water point, the wet return branch of water point becomes the first branch pipe that is connected to the raw water pump and is connected to the second branch pipe of balancer, the wet return is close to the branch department and is equipped with the conductivity meter, first branch pipe and second branch pipe are close to the branch department and are equipped with first backwater valve and second backwater valve respectively; and the control device is respectively connected with the conductivity meter, the first water return valve and the second water return valve. The utility model discloses can realize intelligent backward flow, prevent secondary pollution, water economy resource.

Description

Intelligent pure water backflow water-saving system

Technical Field

The utility model belongs to the technical field of the water treatment, concretely relates to pure water intelligence backward flow water saving system.

Background

Energy-saving energy is a common standard followed by various industries in the 21 st century, water resources in China are in short supply, and water resources are wasted due to the fact that a part of water treatment systems are delayed in technology. The water utilization rate of a water system is improved and is not slow at all.

Present reverse osmosis water treatment system, some design refluxes of pure water part, and some direct emission do not have the intelligent choice backward flow function of system of backward flow design, because pure water pipeline is far away, exist the possibility at dead angle, and there is secondary pollution when pure water process pipeline transport to water consumption point and backward flow to water treatment system, lead to quality of water unqualified, and unqualified return water can pollute original pure water.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a can realize intelligent backward flow, prevent secondary pollution, water economy resource's pure water intelligence backward flow steady voltage water saving system.

An intelligent pure water backflow water-saving system comprises a control device, a raw water pump, a pretreatment system, a balancer, a high-pressure pump and a reverse osmosis system which are sequentially connected, wherein a water outlet of the reverse osmosis system is connected to a water consumption point, a water return pipe of the water consumption point is branched into a first branch pipe connected to the raw water pump and a second branch pipe connected to the balancer, a conductivity meter is arranged at a position, close to the branch, of the water return pipe, and a first water return valve and a second water return valve are respectively arranged at positions, close to the branch, of the first branch pipe and the second branch pipe; and the control device is respectively connected with the conductivity meter, the first water return valve and the second water return valve.

Preferably, a temperature instrument is arranged on the balancer, and a discharge valve is arranged on a discharge port of the balancer.

Preferably, the raw water pump and the high-pressure pump are variable-frequency water pumps, and pressure sensors are respectively arranged at water outlets of the raw water pump and the high-pressure pump.

As optimization, the pretreatment system comprises a sand filter, a carbon filter, a softener and a fine filter which are connected in sequence; the water inlet of the sand filter is connected with the water outlet of the raw water pump, and the water outlet of the fine filter is connected with the water inlet of the balancer.

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

1. the return water position is intelligently selected through the quality of return water, qualified return water flows back to the balancer, and unqualified return water flows back to the water inlet of the raw water pump, so that the reasonable utilization of the return water is realized, the quality of the return water can be ensured, secondary pollution is prevented, the original pure water is not polluted, and the water resource is effectively saved;

2. part of pure water is automatically discharged according to the water temperature control in the balancer, so that the membrane desalination rate can be effectively prevented from being reduced, and the quality of produced water is guaranteed;

3. through set up pressure sensor and realize intelligent frequency conversion control through controlling means at raw water pump and high-pressure pump outlet, prevented the pure water pressure fluctuation, guaranteed equipment operating pressure and delivery pressure's stability.

Drawings

Fig. 1 is a schematic view of the connection structure of the intelligent pure water backflow water-saving system of the present invention.

Wherein, 1, a raw water pump; 2. a pre-treatment system; 21. a sand filter; 22. a carbon filter; 23. a softener; 24. a fine filter; 3. a balancer; 4. a high pressure pump; 5. a reverse osmosis system; 6. water consumption; 7. a water return pipe; 71. a first branch pipe; 72. a second branch pipe; 73. a first water return valve; 74. a second water return valve; 8. a conductivity meter; 9. a temperature meter; 10. a discharge valve; 11. a pressure sensor.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the utility model easy to understand and understand, the utility model is further explained by combining with the specific figures.

The utility model provides a pure water intelligence backward flow water saving system, includes controlling means to and the raw water pump 1, pretreatment systems 2, equalizer 3, high-pressure pump 4 and the reverse osmosis system 5 that connect gradually through the pipeline, reverse osmosis system 5 delivery port is connected to with water spot 6, the wet return 7 branch that with water spot 6 becomes to be connected to the first branch pipe 71 of raw water pump 1 with be connected to the second branch pipe 72 of equalizer 3, wet return 7 is close to the branch department and is equipped with conductivity meter 8, first branch pipe 71 and second branch pipe 72 are close to the branch department and are equipped with first backwater valve 73 and second backwater valve 74 respectively. The control device is respectively connected with the conductivity meter 8, the first water return valve 73 and the second water return valve 74.

Wherein, the control device can be a PLC, an MCU or a PC, etc. The raw water pump is used for pressurizing raw water, and the high-pressure pump is used for pressurizing reverse osmosis inflow. The pretreatment system can be used for reducing turbidity, hardness, residual chlorine and the like of raw water, and plays a role in protecting a later-stage reverse osmosis system. The reverse osmosis system can comprise reverse osmosis membrane elements and matched instruments and meters, and can be used for desalination. The balancer is used as a backflow buffering balancing device for pretreated produced water and pure water, one water inlet of the balancer is connected with a water outlet pipeline of the pretreatment system, the other water inlet of the balancer is connected with the second branch pipe, and the water outlet of the balancer is connected with a water inlet of the high-pressure pump. The first water return valve and the second water return valve can adopt electromagnetic valves and are respectively used for opening or closing the first branch pipe and the second branch pipe. The conductivity meter is used for detecting the conductivity of the water return pipe.

When the system is in operation, pure water enters from a water inlet of a raw water pump, passes through a pretreatment system, a balancer, a high-pressure pump and a reverse osmosis system and enters a water consumption point; the pure water enters the water return pipe through the water using point. If the conductivity meter detects that the conductivity value of the return water is lower than a preset value (the quality of the return water is qualified), the control device controls the first return water valve to close the first branch pipe, controls the second return water valve to open the second branch pipe, and the pure water flows back to the balancer and enters the reverse osmosis system along with the high-pressure pump; and if the conductivity value reaches a preset value (the quality of the return water is judged to be unqualified), the control device controls the first return valve to open the first branch pipe, controls the second return valve to close the second branch pipe, and the pure water flows back to the water inlet of the raw water pump and enters the pretreatment system along with the raw water pump. Adopt reverse osmosis to produce water direct supply to the water point of using in this embodiment, reduced and produced water storage tank, effectively ensure bacterium and endotoxin etc. accord with the water demand. According to the embodiment, the return water position is intelligently selected according to the quality of the return water, the qualified return water flows back to the balancer, and the unqualified return water flows back to the water inlet of the raw water pump, so that the reasonable utilization of the return water is realized, and the water resource can be effectively saved.

In one embodiment, a temperature meter 9 is arranged on the balancer 3, and a discharge valve 10 is arranged on a discharge port of the balancer 3. The temperature gauge 9 and the discharge valve 10 may be connected to a discharge control device, respectively.

Wherein the temperature gauge is used for detecting the temperature of water in the balancer. The emission control device may be the control device in the foregoing embodiment, or may be provided independently. The applicant finds that in the circulation process of pure water, the temperature of the pure water is gradually increased by the aid of work of a water pump, and permeability of a reverse osmosis membrane is increased by the aid of the increased temperature, so that desalination rate of the membrane is reduced, and quality of produced water is reduced. In order to solve the problems, the applicant adopts a mode of automatically discharging partial pure water according to the temperature to guarantee the quality of produced water. When the system is in operation, if the temperature instrument monitors that the water temperature reaches the preset temperature, the discharge control device controls the discharge valve to open the water discharge according to the preset time so as to control the water temperature. The preset values can be adjusted according to specific environments and requirements, for example, the preset temperature of the water temperature can be 25-28 ℃, and the preset time can be 5-10 seconds.

In one embodiment, the raw water pump 1 and the high-pressure pump 4 are variable frequency water pumps, and the water outlets of the raw water pump 1 and the high-pressure pump 4 are respectively provided with a pressure sensor 11. The control ends of the raw water pump 1 and the high-pressure pump 4 and the pressure sensor 11 can be respectively connected with a variable-frequency control device.

Wherein, the pressure sensor is used for detecting the pressure of the raw water pump and the high-pressure pump water outlet. The frequency conversion control device may adopt the control device in the foregoing embodiment, or may be an independently arranged frequency converter. Because the existing backwater is lack of a pressure stabilizing system, the pressure fluctuation of a water production system and water equipment is caused, and the normal work of the equipment is influenced. For example, a hemodialysis center dialysis machine in a hospital needs to operate under a stable pressure, and the pressure fluctuation of pure water causes that water using equipment cannot work normally and even stops. In order to solve the above problems, in this embodiment, the raw water pump and the high-pressure pump adopt a variable frequency water pump, and the water outlets of the variable frequency water pump and the high-pressure pump perform online pressure monitoring through a pressure sensor, and the variable frequency control device can perform intelligent variable frequency control on the raw water pump and the high-pressure pump according to the measured pressure value so as to realize constant conveying pressure and ensure the stability of the running pressure and the conveying pressure of the equipment. Specifically, the pressure sensor can feed back a monitored pressure value to the frequency converter, and the frequency converter automatically adjusts the frequency of the raw water pump or the high-pressure pump to realize constant pressure (the target value of the outlet pressure of the raw water pump can be generally set to 0.3Mpa, the target value of the outlet pressure of the high-pressure pump can be generally set to 1.0Mpa, and the target value can be adjusted as required).

In one embodiment, the pretreatment system 2 includes a sand filter 21, a carbon filter 22, a softener 23, and a fine filter 24, which are connected in series by pipes. The water inlet of the sand filter 21 is connected with the water outlet of the raw water pump 1, and the water outlet of the fine filter 24 is connected with the water inlet of the balancer 3.

Wherein, the sand filter is used for reducing the turbidity of raw water. The carbon filter is used for removing residual chlorine which is difficult to remove in the previous stage filtration, and preventing the subsequent stage reverse osmosis system from being poisoned and polluted by free residual chlorine. The softener is used to reduce the hardness of water. The fine filter is used for further high-precision filtering of the pure water filtered by the preceding stage so as to meet the water demand of a specific application environment.

Above only do the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above embodiment, all belong to the technical scheme of the present invention all belong to the protection scope of the present invention. For those skilled in the art, several modifications can be made without departing from the principle of the present invention, and such modifications should also be considered as the protection scope of the present invention.

Claims

1. An intelligent pure water backflow water-saving system is characterized by comprising a control device, a raw water pump, a pretreatment system, a balancer, a high-pressure pump and a reverse osmosis system which are sequentially connected, wherein a water outlet of the reverse osmosis system is connected to a water consumption point, a water return pipe of the water consumption point is branched into a first branch pipe connected to the raw water pump and a second branch pipe connected to the balancer, a conductivity meter is arranged at a position, close to the branch, of the water return pipe, and a first water return valve and a second water return valve are respectively arranged at positions, close to the branch, of the first branch pipe and the second branch pipe; and the control device is respectively connected with the conductivity meter, the first water return valve and the second water return valve.

2. The intelligent pure water backflow water-saving system according to claim 1, characterized in that:

the balancer is provided with a temperature instrument, and a discharge valve is arranged on a discharge port of the balancer.

3. The intelligent pure water backflow water-saving system according to claim 1, characterized in that:

the raw water pump and the high-pressure pump are frequency conversion water pumps, and pressure sensors are respectively arranged at water outlets of the raw water pump and the high-pressure pump.

4. The intelligent pure water backflow water-saving system according to claim 1, characterized in that:

the pretreatment system comprises a sand filter, a carbon filter, a softener and a fine filter which are connected in sequence; the water inlet of the sand filter is connected with the water outlet of the raw water pump, and the water outlet of the fine filter is connected with the water inlet of the balancer.