Concentrated water recycling system

Abstract

The utility model provides a concentrated water recycling system which is characterized in that a filtered concentrated water outlet is communicated with a concentrated water inlet pipe of a concentrated water tank, a filter screen cover is arranged in the concentrated water tank and divides the concentrated water tank into two areas, the concentrated water inlet pipe extends into the filter screen cover, and a water pumping pipe is arranged on the side face of the concentrated water tank. The lower end of the water pumping pipe extends towards the bottom of the concentrated water tank with a distance reserved, the water pumping pipe is communicated with a system water supply pipe through a constant-pressure water supply pump, and a second electric valve is arranged between the constant-pressure water supply pump and the system water supply pipe. The liquid level monitoring system is used for controlling the constant-pressure water supply pump to start and stop, the tap water conversion utilization rate is increased, and the waste phenomenon caused by the fact that concentrated water is large and cannot be reasonably utilized is avoided; and meanwhile, uninterrupted water supply in other links is ensured. The water resource utilization rate is greatly improved, the sewage treatment workload is reduced, and the water cost of enterprises is saved.

Description

Technical Field

[0001] The utility model relates to the field of concentrated water recovery, in particular to a concentrated water recovery and reuse system. Background Art

[0002] Food processing and other industries have high requirements for water quality, and usually use filtration and water purification devices to remove impurities and minerals in the water. However, a large amount of concentrated water (i.e., water that has not been completely purified) is produced during the water purification process, and the ratio of produced water to concentrated water is about 2:1. The direct discharge of this concentrated water not only causes a huge waste of water resources, but also increases the burden of sewage treatment.

[0003] Most of the existing water purification equipment does not have an effective brine recovery mechanism, resulting in a large amount of brine being directly discharged. Although this brine cannot meet the requirements of some production processes, it is still usable for some applications that do not require high water quality, such as raw material cleaning, equipment cooling, spray dust reduction outside the workshop, and floor cleaning after production. Utility Model Content

[0004] The main purpose of the utility model is to provide a concentrated water recovery and reuse system to solve the problem that most existing water purification equipments do not have an effective concentrated water recovery mechanism, resulting in a large amount of concentrated water being directly discharged.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a concentrated water recovery and reuse system, the filtered concentrated water output port is connected with the concentrated water inlet pipe of the concentrated water tank, a filter screen cover is provided inside the concentrated water tank, the filter screen cover divides the concentrated water tank into two areas, the concentrated water inlet pipe penetrates into the filter screen cover, a pumping pipe is provided on the side of the concentrated water tank, the lower end of the pumping pipe extends to the bottom of the concentrated water tank with a distance, the pumping pipe is connected with the system water supply pipe through a constant pressure water supply pump, and a second electric valve is provided between the constant pressure water supply pump and the system water supply pipe.

[0006] In the preferred embodiment, a water level probe is further provided inside the concentrated water tank, the water level probe is close to the end of the concentrated water tank, and a water level meter is provided outside the concentrated water tank, and the water level meter is electrically connected to the water level probe via a cable.

[0007] In the preferred embodiment, a vertical wire pipe is further provided inside the concentrated water tank, a water level probe is arranged at the lower end of the wire pipe, and a cable of the water level meter passes through the wire pipe and is electrically connected to the water level probe.

[0008] In the preferred embodiment, a support frame is provided on the outside of the filter screen cover, a mounting flange on the upper end of the support frame abuts against the upper surface of the mounting platform inside the concentrated water tank, and the support frame is fixed to the upper surface of the mounting platform by a plurality of bolts.

[0009] In the preferred embodiment, a bearing platform is provided at the upper end of the filter screen cover, and a recessed step matching the bearing platform is provided at the inner ring of the mounting flange at the upper end of the support frame, and the bearing platform of the filter screen cover is clamped on the recessed step.

[0010] In the preferred embodiment, the lower end of the filter screen cover is a conical structure, and the conical end is provided with a sewage pipe connected to the interior of the filter screen cover, and the sewage pipe passes through the lower end of the concentrated water tank and extends to the outside.

[0011] In the preferred embodiment, a sewage valve is provided at the lower end of the sewage pipe.

[0012] In the preferred embodiment, a fixing cage composed of rods is provided at the lower end of the mounting flange of the support frame, and a tapered limiting ring is provided at the lower end of the fixing cage, which cooperates with the conical outer surface of the lower end of the filter screen cover.

[0013] In the preferred embodiment, a drain pipe is provided at the lower end of the concentrated water tank, and a drain valve is provided at the end of the drain pipe.

[0014] In the preferred embodiment, a first electric valve is provided between the water pump and the constant pressure water supply pump, and a control center is also provided. The control center is electrically connected to the water level meter, the first electric valve and the constant pressure water supply pump.

[0015] The utility model provides a concentrated water recovery and reuse system. By setting a concentrated water tank and related pipeline connections, the concentrated water generated by the water purification equipment can be effectively collected, the direct discharge of concentrated water can be avoided, and the waste of water resources can be reduced. The filter screen inside the concentrated water tank can preliminarily filter the impurities in the concentrated water and improve the quality of the recovered concentrated water. The water level probe and the water level meter are set to monitor the water level changes in the concentrated water tank in real time and realize automatic control through the control center. When the liquid level in the concentrated water tank reaches the preset value, the constant pressure water supply pump automatically starts to realize automatic water supply; when the liquid level in the concentrated water tank drops to a level that is insufficient to meet the water demand, the system automatically shuts down the water supply pump and switches to tap water supply. It not only solves the problem that concentrated water cannot be effectively utilized, but also ensures the uninterrupted water supply of other water use links, improves the overall utilization rate of water resources, reduces the workload of sewage treatment, and thus saves a lot of water costs for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is the overall system layout structure diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the installation of the filter screen cover and the support frame of the utility model;

[0019] Figure 3 This is a structural diagram of the installation and disassembly of the filter screen cover and the support frame of the utility model.

[0020] In the figure: concentrate tank 1; concentrate inlet pipe 101; drain pipe 102; drain valve 103; water level meter 2; support frame 3; mounting flange 301; fixing cage 302; limit ring 303; mounting platform 4; filter screen cover 5; bearing platform 501; inspection door 6; wire pipe 7; water level probe 8; sewage pipe 9; sewage valve 10; water pumping pipe 11; first electric valve 12; constant pressure water supply pump 13; system water supply pipe 14; second electric valve 15. DETAILED DESCRIPTION

[0021] like Figures 1 to 3 As shown, a concentrated water recycling system, the filtered concentrated water outlet is connected to the concentrated water inlet pipe 101 of the concentrated water tank 1, the concentrated water tank 1 is provided with a filter screen cover 5, the filter screen cover 5 divides the concentrated water tank 1 into two areas, the concentrated water inlet pipe 101 goes deep into the filter screen cover 5, the side of the concentrated water tank 1 is provided with a pumping pipe 11, the lower end of the pumping pipe 11 extends to the bottom of the concentrated water tank 1 and leaves a distance, the pumping pipe 11 is connected to the system water supply pipe 14 through a constant pressure water supply pump 13, and a second electric valve 15 is provided between the constant pressure water supply pump 13 and the system water supply pipe 14. A water level probe 8 is also provided inside the concentrated water tank 1, the water level probe 8 is close to the end of the concentrated water tank 1, and a water level meter 2 is arranged outside the concentrated water tank 1, and the water level meter 2 is electrically connected to the water level probe 8 through a cable.

[0022] The filter concentrate outlet is connected to the concentrate water inlet pipe 101 of the concentrate tank 1. The filter screen cover 5 performs a simple filter on the concentrate to filter a portion of the filter residue. The water level meter 2 and the water level probe 8 monitor the water level inside the concentrate tank 1. When the liquid level reaches the preset value, the constant pressure water supply pump 13 is turned on and the constant pressure water supply pump 13 starts to supply water to the equipment and facilities that need water. When the liquid level in the concentrate tank drops to a level that is insufficient to meet the water demand, the constant pressure water supply pump 13 is turned off and automatically switched to tap water supply. The mesh diameter of the filter screen cover 5 is 0.5-0.8mm.

[0023] When the water purification equipment produces concentrated water, the concentrated water flows into the concentrated water tank 1 through the concentrated water inlet pipe 101. The filter screen 5 in the concentrated water tank 1 performs preliminary filtration on the concentrated water to remove some impurities. The water level meter 2 and the water level probe 8 monitor the water level inside the concentrated water tank 1. When the water level inside the concentrated water tank 1 reaches the preset value, the constant pressure water supply pump 13 is turned on through the control of the first electric valve 12 and the second electric valve 15, and starts to supply water to the equipment and facilities that need water. When the liquid level in the concentrated water tank 1 drops to a level that is insufficient to meet the water demand, the constant pressure water supply pump 13 is turned off and automatically switched to tap water supply.

[0024] In the preferred embodiment, a vertical wire tube 7 is further provided inside the concentrated water tank 1, and a water level probe 8 is provided at the lower end of the wire tube 7. The cable of the water level meter 2 passes through the wire tube 7 and is electrically connected to the water level probe 8. The wire tube 7 is provided inside the concentrated water tank 1 and is in a vertical direction. The wire tube 7 is used to fix the position of the water level probe. It can also be used as a protective measure so that the cable of the water level meter can be safely connected to the water level probe through it.

[0025] In the preferred embodiment, the filter screen cover 5 is provided with a support frame 3 on the outside, and the upper end mounting flange 301 of the support frame 3 abuts against the upper surface of the mounting platform 4 inside the concentrated water tank 1, and the support frame 3 is fixed to the upper surface of the mounting platform 4 by multiple bolts. The support frame 3 is used to carry the filter screen cover 5, and is installed on the upper surface of the mounting platform 4 inside the concentrated water tank 1 through the mounting flange 301, and the support frame 3 is fixed to the upper surface of the mounting platform 4 by multiple bolts.

[0026] In the preferred embodiment, a bearing platform 501 is provided at the upper end of the filter screen cover 5, and a recessed step matching the bearing platform 501 is provided at the inner circle of the mounting flange 301 at the upper end of the support frame 3, and the bearing platform 501 of the filter screen cover 5 is stuck on the recessed step.

[0027] In the preferred embodiment, the lower end of the filter screen cover 5 is a conical structure, and a drain pipe 9 is provided at the conical end to communicate with the inside of the filter screen cover 5, and the drain pipe 9 extends to the outside through the lower end of the concentrated water tank 1. The lower end of the filter screen cover 5 is designed to be a conical structure, and a drain pipe 9 is provided at the conical end to communicate with the inside of the filter screen cover 5, and extend to the outside through the lower end of the concentrated water tank 1, for discharging the sludge or sewage accumulated inside the filter screen cover 5.

[0028] In the preferred embodiment, a drain valve 10 is provided at the lower end of the drain pipe 9. The drain valve 10 can be activated to discharge the sludge impurities inside the filter screen cover 5. A drain valve 10 is provided at the lower end of the drain pipe 9. The sludge impurities accumulated inside the filter screen cover 5 can be discharged by activating the drain valve 10.

[0029] In the preferred embodiment, the lower end of the mounting flange 301 of the support frame 3 is provided with a fixing cage 302 composed of a rod body, and the lower end of the fixing cage 302 is provided with a narrowed limiting ring 303, which cooperates with the tapered outer surface of the lower end of the filter screen cover 5. The lower end of the mounting flange 301 of the support frame 3 is provided with a fixing cage 302 composed of a rod body, and the lower end of the fixing cage 302 is provided with a narrowed limiting ring 303, which cooperates with the tapered outer surface of the lower end of the filter screen cover 5, playing a role of limiting support, so that the supporting effect of the filter screen cover 5 is better, and a better limiting support effect is provided.

[0030] In the preferred embodiment, a drain pipe 102 is further provided at the lower end of the concentrated water tank 1, and a drain valve 103 is provided at the end of the drain pipe 102 to discharge the sludge or impurities at the bottom of the concentrated water tank 1.

[0031] In the preferred embodiment, a first electric valve 12 is provided between the water pump 11 and the constant pressure water supply pump 13 , and a control center is also provided. The control center is electrically connected to the water level meter 2 , the first electric valve 12 and the constant pressure water supply pump 13 .

[0032] The control center receives the water level data transmitted by the water level meter 2. The status of the first electric valve 12 and the constant pressure water supply pump 13 are initialized to be closed. The water level probe 8 continuously monitors the water level in the concentrated water tank 1 and transmits the data to the water level meter 2. The water level meter 2 sends the real-time water level information to the control center. When the water level reaches the preset start threshold, the control center receives the signal from the water level meter 2. The control center opens the first electric valve 12, starts the constant pressure water supply pump 13, and starts to supply water to the equipment and facilities that need water.

[0033] When the water level drops to the preset closing threshold, the control center receives a signal from the water level meter 2. The control center turns off the constant pressure water supply pump 13, closes the first electric valve 12, and stops the water supply. The liquid level monitoring system is used to control the start and stop of the constant pressure water supply pump, improve the conversion utilization rate of tap water, and solve the waste caused by the large amount of concentrated water that cannot be reasonably used; at the same time, it ensures uninterrupted water supply in other links. The utilization rate of water resources is greatly improved, the workload of sewage treatment is reduced, and the water cost of enterprises is saved.

[0034] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A concentrated water recovery and reuse system, characterized by: The filtered concentrated water outlet is connected to a concentrated water inlet pipe (101) of the concentrated water tank (1). A filter screen (5) is provided inside the concentrated water tank (1). The filter screen (5) divides the concentrated water tank (1) into two areas. The concentrated water inlet pipe (101) extends deep into the filter screen (5). A pumping pipe (11) is provided on the side of the concentrated water tank (1). The lower end of the pumping pipe (11) extends to the bottom of the concentrated water tank (1) with a distance. The pumping pipe (11) is connected to a system water supply pipe (14) through a constant pressure water supply pump (13). A second electric valve (15) is provided between the constant pressure water supply pump (13) and the system water supply pipe (14).

2. The concentrated water recovery and reuse system according to claim 1 is characterized by: A water level probe (8) is also provided inside the concentrated water tank (1), and the water level probe (8) is close to the end of the concentrated water tank (1). The water level meter (2) is provided outside the concentrated water tank (1), and the water level meter (2) is electrically connected to the water level probe (8) via a cable.

3. A concentrated water recovery and reuse system according to claim 2, characterized in that: A vertical wire tube (7) is also provided inside the concentrated water tank (1), a water level probe (8) is arranged at the lower end of the wire tube (7), and a cable of the water level meter (2) passes through the wire tube (7) and is electrically connected to the water level probe (8).

4. The concentrated water recovery and reuse system according to claim 1 is characterized by: A support frame (3) is sleeved on the outside of the filter screen cover (5); a mounting flange (301) at the upper end of the support frame (3) abuts against an upper surface of a mounting platform (4) inside the concentrated water tank (1); and the support frame (3) is fixed to the upper surface of the mounting platform (4) by a plurality of bolts.

5. A concentrated water recovery and reuse system according to claim 4, characterized in that: A bearing platform (501) is provided at the upper end of the filter screen cover (5), and a recessed step matching the bearing platform (501) is provided on the inner ring of the mounting flange (301) at the upper end of the support frame (3), and the bearing platform (501) of the filter screen cover (5) is clamped on the recessed step.

6. The concentrated water recovery and reuse system according to claim 4 is characterized by: The lower end of the filter screen cover (5) is a conical structure, and a sewage discharge pipe (9) communicating with the interior of the filter screen cover (5) is provided at the conical end. The sewage discharge pipe (9) passes through the lower end of the concentrated water tank (1) and extends to the outside.

7. A concentrated water recovery and reuse system according to claim 6, characterized in that: A sewage valve (10) is provided at the lower end of the sewage pipe (9).

8. The concentrated water recovery and reuse system according to claim 6 is characterized by: A fixing cage (302) composed of a rod body is provided at the lower end of the mounting flange (301) of the support frame (3), and a shrunken limiting ring (303) is provided at the lower end of the fixing cage (302). The shrunken limiting ring (303) cooperates with the conical outer surface of the lower end of the filter screen cover (5).

9. The concentrated water recovery and reuse system according to claim 1 is characterized by: A drainage pipe (102) is also provided at the lower end of the concentrated water tank (1), and a drainage valve (103) is provided at the end of the drainage pipe (102).

10. The concentrated water recovery and reuse system according to claim 2, characterized in that: A first electric valve (12) is provided between the water pump (11) and the constant-pressure water supply pump (13), and a control center is also provided. The control center is electrically connected to the water level meter (2), the first electric valve (12) and the constant-pressure water supply pump (13).

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