Self-purification system of pipeline direct drinking water pure water tank

Abstract

The utility model relates to the technical field of water treatment equipment, and discloses a pipeline direct drinking water pure water tank self-purification system which comprises a pure water tank, a PLC (programmable logic controller) control system is fixedly mounted at the top end of the pure water tank, a water quality detector is arranged at the bottom end of the PLC control system, a liquid level meter is arranged at the bottom end of the PLC control system, and the water quality detector is connected with the liquid level meter. The top end of the pure water tank is fixedly connected with a water supply and return pipe network, a drainage electromagnetic valve is fixedly mounted at the bottom of the water supply and return pipe network, a water supply electromagnetic valve is fixedly mounted at the bottom of the water supply and return pipe network, and a circulating pump is fixedly mounted at the bottom of the water supply and return pipe network. When the liquid level reaches the middle liquid level, the water supply electromagnetic valve is opened, so that the self-cleaning of the pure water tank is completed, the self-cleaning of the pure water tank in the long-time use process is realized, and the problem of bacterial pollution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, and more specifically, to a pipeline direct drinking water pure water tank self-purification system. Background Art

[0002] As a new form of drinking water, piped drinking water is developing rapidly across the country. Through membrane components, the raw water is deeply treated to achieve the purpose of direct drinking. In order to meet the user's water consumption peak, the treated drinking water in the piped drinking water system will be temporarily stored in a pure water tank, and the water will be distributed and supplied by a circulating pump. However, as a water storage device, the pure water tank is very likely to cause bacterial contamination once it encounters external bacterial interference and poor fluidity. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a pipeline direct drinking water pure water tank self-purification system, which has the advantage of being able to perform self-purification.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline direct drinking water pure water tank self-purification system, comprising a pure water tank, a PLC control system is fixedly installed on the top of the pure water tank, a water quality detector is arranged at the bottom of the PLC control system, a liquid level meter is arranged at the bottom of the PLC control system, the top of the pure water tank is fixedly connected to a water supply and return pipe network, a drainage solenoid valve is fixedly installed at the bottom of the water supply and return pipe network, a water supply solenoid valve is fixedly installed at the bottom of the water supply and return pipe network, and a circulating pump is fixedly installed at the bottom of the water supply and return pipe network.

[0005] As a preferred technical solution of the utility model, an agitator is arranged in the middle of the pure water tank, and the bottom end of the agitator is located at the bottom of the inner cavity of the pure water tank.

[0006] As a preferred technical solution of the utility model, the use of the pure water tank is divided into a self-purification time zone and a water use time zone, and the calculation formula of the self-purification time zone and the water use time zone is:

[0007]

[0008]

[0009] D n For statistical time zone, D n ≥0 is the self-purification time zone, D n <0 is the water use time zone.

[0010] As a preferred technical solution of the utility model, t is the number of days in the cycle; T is the number of days in the fourteen-day self-cleaning period; T1 is the time interval from when the liquid level is lower than the middle liquid level to when it reaches the high liquid level; C is the safety factor. n The value is 1.2 during the period from 6:00 am to 23:00 pm, and 1.0 during the rest of the time period.

[0011] As a preferred technical solution of the utility model, a user end is arranged on the right side of the water supply and return pipe network, and the bottom end of the pure water tank is connected to the water supply and return pipe network.

[0012] As a preferred technical solution of the utility model, a water production network is fixedly installed on the top of the pure water tank, and the water quality detector and the liquid level meter are both located in the inner cavity of the pure water tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model sets a water use time zone and a self-purification time zone, and sets three liquid level values. When the pure water tank needs to be self-purified, the water supply solenoid valve and the circulation pump are closed, and the drainage solenoid valve is opened. When the liquid level is lower than the low liquid level, the drainage solenoid valve is closed; when the liquid level reaches the high liquid level again, the drainage solenoid valve is opened until the liquid level is lower than the low liquid level, and then it is closed; when the liquid level reaches the middle liquid level, the water supply solenoid valve is opened, thereby completing the self-purification of the pure water tank, thereby realizing the self-purification of the pure water tank during long-term use and avoiding the problem of bacterial contamination.

[0015] 2. The utility model uses the agitator in the middle of the pure water tank to stir the water in the inner cavity of the pure water tank during the long-term storage process, so that the bacteria and other materials affecting the water quality in the water are evenly distributed in the water body, so that the water quality detector can detect the water body more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the user-side connection of the utility model structure;

[0018] Figure 3 This is a schematic diagram of the connection of the water supply and return pipe network of the utility model structure;

[0019] Figure 4 This is a schematic diagram of the connection of the circulation pump of the utility model structure.

[0020] In the figure: 1. Pure water tank; 2. PLC control system; 3. Water quality detector; 4. Liquid level meter; 5. Drainage solenoid valve; 6. Water supply solenoid valve; 7. Circulation pump; 8. User end; 9. Water production network; 10. Drainage network; 11. Water supply and return network; 12. Agitator. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 4 As shown, the utility model provides a pipeline direct drinking water pure water tank self-purification system, including a pure water tank 1, a PLC control system 2 is fixedly installed on the top of the pure water tank 1, a water quality detector 3 is arranged at the bottom of the PLC control system 2, a liquid level meter 4 is arranged at the bottom of the PLC control system 2, a supply and return water pipe network 11 is fixedly connected to the top of the pure water tank 1, a drainage solenoid valve 5 is fixedly installed at the bottom of the supply and return water pipe network 11, a water supply solenoid valve 6 is fixedly installed at the bottom of the supply and return water pipe network 11, and a circulation pump 7 is fixedly installed at the bottom of the supply and return water pipe network 11;

[0023] By setting the water use time zone and the self-purification time zone, and setting three liquid level values, when the pure water tank needs to be self-purified, the water supply solenoid valve 6 and the circulation pump 7 are closed, and the drain solenoid valve 5 is opened. When the liquid level is lower than the low liquid level, the drain solenoid valve 5 is closed; when the liquid level reaches the high liquid level again, the drain solenoid valve 5 is opened until the liquid level is lower than the low liquid level, and then it is closed; when the liquid level reaches the middle liquid level, the water supply solenoid valve 6 is opened, thereby completing the self-purification of the pure water tank, thereby realizing the self-purification of the pure water tank during long-term use and avoiding the problem of bacterial contamination.

[0024] Wherein, a stirrer 12 is arranged in the middle of the pure water tank 1, and the bottom end of the stirrer 12 is located at the bottom of the inner cavity of the pure water tank 1;

[0025] Through the agitator 12 in the middle of the pure water tank 1, the water in the inner cavity of the pure water tank 1 is stirred by the agitator 12 during the long-term storage process, so that the bacteria and other materials affecting the water quality inside the water are evenly distributed in the water body, so that the water quality detector 3 can detect the water body more accurately.

[0026] The use of the pure water tank 1 is divided into a self-purification time zone and a water use time zone. The calculation formulas for the self-purification time zone and the water use time zone are:

[0027]

[0028]

[0029] D n For statistical time zone, D n ≥0 is the self-purification time zone, D n <0 is the water use time zone;

[0030] By calculating the self-purification time zone and the water use time zone, the user's water use time zone can be avoided, so that the water in the inner cavity of the pure water tank 1 can be self-purified in the self-purification time zone.

[0031] Among them, t is the number of days in the cycle; T is the number of days in the fourteen days; T1 is the time interval from the liquid level being lower than the middle liquid level to the liquid level reaching the high liquid level; C is the safety factor. n The value is 1.2 during the period from 6:00 am to 23:00 pm, and 1.0 during the rest of the time period.

[0032] By substituting the numerical values, the water consumption time zone and self-purification time zone can be accurately calculated.

[0033] Among them, a user end 8 is arranged on the right side of the water supply and return pipe network 11, and the bottom end of the pure water tank 1 is connected to the water supply and return pipe network 11;

[0034] The staff can operate through the user end 8 on the right side of the water supply and return network 11, and then connect the bottom end of the pure water tank 1 to the water supply and return network 11, so that the water in the inner cavity of the pure water tank 1 can be discharged from the drain solenoid valve 5.

[0035] Among them, a water production network 9 is fixedly installed on the top of the pure water tank 1, and the water quality detector 3 and the liquid level meter 4 are both located in the inner cavity of the pure water tank 1;

[0036] A water production network 9 is fixed on the top of the pure water tank 1, so that water can enter the inner cavity of the pure water tank 1 from the water production network 9, thereby replenishing the water in the inner cavity of the pure water tank 1. Then, the water quality detector 3 and the liquid level meter 4 are both located in the inner cavity of the pure water tank 1, so that the water quality and liquid level in the inner cavity of the pure water tank 1 can be detected by the water quality detector 3 and the liquid level meter 4.

[0037] The working principle and use process of the utility model are as follows: the liquid level gauge 4 in the pure water tank 1 is set to three liquid level values: low liquid level, middle liquid level and high liquid level. Below the low liquid level, the circulating pump 7 stops working; below the middle liquid level, pure water is added to the pure water tank 1; above the middle liquid level, the circulating pump 7 is reset; above the high liquid level, pure water stops adding to the pure water tank 1.

[0038] The self-purification system of pure water tank 1 is set to complete self-purification work once every fourteen days. The PLC control system 2 divides a day into eight time zones A1, A2, A3...A8 according to three-hour intervals, with zero o'clock every day as the initial time point. The user's water usage information is collected through the liquid level meter 4, and the water usage time zone and self-purification time zone are allocated according to the user's water usage habits. The self-purification time zone refers to the time period T1≤1 hour from the time when the liquid level of pure water tank 1 is lower than the middle liquid level to the time when it reaches the high liquid level, and the achievement rate of this time period within fourteen days is more than 75%; the rest of the time is the water usage time zone

[0039] The time zone allocation is calculated once every fourteen days by the PLC control system 2. The pure water tank 1 is self-purified once every fourteen days in the time zone determined by the system. The execution order is that the larger the Dn value, the higher the priority. When there are multiple maximum values ​​at the same time, the statistical time zone closer to zero has a higher priority.

[0040] Pure water tank self-purification: close the water supply solenoid valve 6 and the circulation pump 7, open the drain solenoid valve 5, and close the drain solenoid valve 5 when the liquid level is lower than the low level; when the liquid level reaches the high level again, open the drain solenoid valve 5 until the liquid level is lower than the low level and close it; when the liquid level reaches the middle level, open the water supply solenoid valve 6, and the PLC control system 2 executes the normal water supply procedure.

[0041] The PLC control system 2 monitors the water quality data in the pure water tank in real time through the water quality detector 3. When the data deviates from the predicted value by 30% or more, the system will start the remote alarm program to contact the back-end administrator for on-site processing;

[0042] Furthermore, the water in the inner cavity of the PLC control system 2 is actively stirred by the agitator 12 to ensure that the detection result of the water quality detector 3 is accurate and effective.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline direct drinking water pure water tank self-purification system, comprising a pure water tank (1), characterized in that: A PLC control system (2) is fixedly installed at the top of the pure water tank (1), a water quality detector (3) is arranged at the bottom of the PLC control system (2), a liquid level meter (4) is arranged at the bottom of the PLC control system (2), the top of the pure water tank (1) is fixedly connected to a water supply and return pipe network (11), a drainage solenoid valve (5) is fixedly installed at the bottom of the water supply and return pipe network (11), a water supply solenoid valve (6) is fixedly installed at the bottom of the water supply and return pipe network (11), and a circulation pump (7) is fixedly installed at the bottom of the water supply and return pipe network (11).

2. A pipeline direct drinking water pure water tank self-purification system according to claim 1, characterized in that: A stirrer (12) is provided in the middle of the pure water tank (1), and the bottom end of the stirrer (12) is located at the bottom of the inner cavity of the pure water tank (1).

3. A pipeline direct drinking water pure water tank self-purification system according to claim 1, characterized in that: A user end (8) is provided on the right side of the water supply and return pipe network (11), and the bottom end of the pure water tank (1) is connected to the water supply and return pipe network (11).

4. A pipeline direct drinking water pure water tank self-purification system according to claim 1, characterized in that: A water production network (9) is fixedly installed on the top of the pure water tank (1), and the water quality detector (3) and the liquid level meter (4) are both located in the inner cavity of the pure water tank (1).

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