Sodium hypochlorite on-line preparation and on-line dilution fusion dosing system

Abstract

A sodium hypochlorite on-line preparation and on-line dilution fusion feeding system comprises a sodium hypochlorite generator and a feeding lifting pump, at least two transfer storage tanks are connected between a liquid outlet pipe of the sodium hypochlorite generator and a liquid inlet of the feeding lifting pump in parallel through pipelines, at least one of the transfer storage tanks is a dual-purpose storage tank, and the other transfer storage tank is a dual-purpose storage tank. Valves are arranged on a liquid inlet pipe and a liquid outlet pipe of the dual-purpose storage tank; the dual-purpose storage tank is respectively communicated with a liquid outlet of the commercial sodium hypochlorite lifting pump and a liquid inlet of the online proportional dilution device through pipelines with valves; the liquid inlet of the on-line proportional dilution device is also communicated with a soft water inlet pipe; and a liquid outlet of the on-line proportional dilution device is communicated with a liquid outlet pipe of the sodium hypochlorite generator through a pipeline with a valve. According to the system, the preparation, dilution and adding processes of sodium hypochlorite are integrated together, so that the efficiency and the safety are improved, the equipment cost and the occupied area are reduced, and deterioration waste caused by inconvenience in use of high-concentration commodity sodium hypochlorite is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to sodium hypochlorite preparation technical field, especially sodium hypochlorite online preparation and online dilution fusion feeding system. BACKGROUND

[0002] In the water treatment industry, sodium hypochlorite is used as a common disinfectant, and its acquisition method mainly has two kinds: purchasing high-concentration commercial sodium hypochlorite and using sodium hypochlorite generator to prepare online.

[0003] High-concentration commercial sodium hypochlorite can be purchased according to the batch of use amount, and the demand change can be flexibly coped with, and at the same time, no additional equipment investment is needed, and it can be used directly after purchase, and the convenience is high. But sodium hypochlorite is volatile and easy to waste, and the transportation and storage cost is higher.

[0004] The raw material (such as salt) of sodium hypochlorite generator online preparation has long storage period, stable supply, and the running cost of the generator is lower under long-term use; at the same time, the transportation and storage of chemicals are reduced, and the environmental risk is reduced. But the purchase and installation cost of the generator is higher, and the maximum output is limited, and when the water quality fluctuates or the use amount suddenly increases, the demand may not be met.

[0005] Many water treatment projects will be equipped with high-concentration commercial sodium hypochlorite and sodium hypochlorite generator, but the effective chlorine concentration of commercial sodium hypochlorite is generally 10%, and the effective chlorine concentration of sodium hypochlorite prepared online by sodium hypochlorite generator is generally 1%, which leads to a 10-fold difference in the flow of the corresponding dosing pump. Therefore, the storage tanks and dosing pumps of the two systems need to be independently configured, which leads to an increase in the number of equipment and a large floor area.

[0006] According to GB50013-2018 "Outdoor Water Supply Design Standard", the storage period of high-concentration commercial sodium hypochlorite should not exceed 7 days, otherwise waste will be caused due to volatilization and deterioration. In addition, the continuous use of a large amount of commercial sodium hypochlorite may cause the generator to be idle for a long time, reduce the utilization rate of the equipment, and increase the production cost and maintenance cost.

[0007] Therefore, in view of the deficiencies of the prior art, it is necessary to design a sodium hypochlorite online preparation and online dilution fusion feeding system to solve the above problems.

[0008] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the utility model, and for the convenience of understanding by the person skilled in the art, and the above content cannot be considered as known by the person skilled in the art because the above content is described in the background of the utility model. Utility model content

[0009] The utility model discloses a sodium hypochlorite online preparation and online dilution fusion dosing system for solving the problems of large number of equipment, large occupied area and high maintenance cost when high concentration commercial sodium hypochlorite and sodium hypochlorite generator online preparation two kinds of sodium hypochlorite supply system are used at the same time.

[0010] The utility model discloses a sodium hypochlorite online preparation and online dilution fusion dosing system, including sodium hypochlorite generator and dosing booster pump, and sodium hypochlorite generator is used to prepare standard concentration sodium hypochlorite on site, and dosing booster pump is used to deliver sodium hypochlorite to dosing point.

[0011] The liquid outlet pipe of the sodium hypochlorite generator and the liquid inlet of the dosing booster pump are connected in parallel by at least two transfer tanks, at least one of the transfer tanks is a dual-purpose tank, valves are arranged on the liquid inlet pipe and the liquid outlet pipe of the dual-purpose tank, the dual-purpose tank is connected to the liquid outlet of the commercial sodium hypochlorite booster pump through a pipe with a valve, so that the dual-purpose tank can switch between storing self-made standard concentration sodium hypochlorite and purchased high concentration commercial sodium hypochlorite as needed. The dual-purpose tank is also connected to the liquid inlet of the online proportional dilution device through a pipe with a valve, the liquid inlet of the online proportional dilution device is also connected to a soft water inlet pipe, and the soft water inlet pipe is used to supply soft water to the online proportional dilution device; the liquid outlet of the online proportional dilution device is connected to the liquid outlet pipe of the sodium hypochlorite generator through a pipe with a valve, and the high concentration sodium hypochlorite solution can be diluted to the required concentration by the online proportional dilution device.

[0012] Preferably, the online proportional dilution device includes a pipeline mixer, the liquid outlet of the pipeline mixer is connected to the liquid outlet pipe of the sodium hypochlorite generator through a pipe with a valve, the liquid inlet of the pipeline mixer is connected to the dual-purpose tank and the soft water inlet pipe through pipes, respectively, a first flow regulating valve, a first electric valve and a first flow meter are arranged on the pipe between the soft water inlet pipe and the pipeline mixer, a dilution booster pump, a second flow regulating valve and a second flow meter are arranged on the pipe between the dual-purpose tank and the pipeline mixer, and the high concentration sodium hypochlorite can be automatically diluted and dosed in proportion by the cooperation of the electric valve, the flow regulating valve and the flow meter.

[0013] Preferably, valves are arranged at the liquid inlet and the liquid outlet of the dosing booster pump, so as to facilitate the control of the dosing system.

[0014] Preferably, a third flow meter is arranged on the pipe between the commercial sodium hypochlorite booster pump and the dual-purpose tank, so as to control the storage amount of the high concentration commercial sodium hypochlorite.

[0015] Preferably, the number of the dual-purpose tanks is two or more, so as to store the high concentration commercial sodium hypochlorite in batches.

[0016] With the technical scheme, the utility model discloses the beneficial effect compared with prior art has:

[0017] The utility model discloses a sodium hypochlorite online preparation and online dilution fusion dosing system, the dual -purpose storage tank of design makes the system can use the self -made standard concentration sodium hypochlorite also can use the high concentration commodity sodium hypochlorite of purchase, improved the adaptability of system, adopt online proportion dilution device can accurate control the concentration of sodium hypochlorite solution, avoided the error and risk that the manual operation can bring, through online dilution cooperation dual -purpose storage tank, can reduce the quantity and the area of occupation of system device, reduce the manufacturing and use cost of system equipment, through electric valve, flow regulating valve and flowmeter's cooperation, can realize high concentration sodium hypochlorite according to proportion automatic dilution and dosing, utilize online dilution cooperation dual -purpose storage tank also can realize high concentration commodity sodium hypochlorite's batch use, prevent high concentration commodity sodium hypochlorite to save metamorphic and cause waste, also avoid once centralized use to cause sodium hypochlorite to produce excess limit to sodium hypochlorite generator's operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiment of the present application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] Figure 1 The layout diagram of the sodium hypochlorite online preparation and online dilution fusion dosing system of the utility model.

[0020] In the above drawings, 1, sodium hypochlorite generator; 2, dosing booster pump; 3, transfer storage tank; 4, commodity sodium hypochlorite booster pump; 5, online proportion dilution device; 51, pipeline mixer; 52, first flow regulating valve; 53, first electric valve; 54, first flowmeter; 55, dilution booster pump; 56, second flow regulating valve; 57, second flowmeter; 6, soft water inlet pipe; 7, third flowmeter. EMBODIMENT

[0021] The embodiments of the present application will be described below by specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application. In addition, the terms "include" and "have" and their synonyms are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to having a specific orientation, or to being constructed and operated in a specific orientation.

[0024] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved", "attached" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For example, "attached" can be completely attached or partially attached. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0027] Embodiment:

[0028] As Figure 1As shown in the utility model discloses a kind of sodium hypochlorite online preparation and online dilution fusion dosing system, including sodium hypochlorite generator 1 and dosing booster pump 2, two transfer tanks 3 are connected in parallel by pipeline between the liquid outlet pipe of sodium hypochlorite generator 1 and the liquid inlet of dosing booster pump 2, there is a dual-purpose tank in transfer tank 3, it needs to be noted that, in other embodiments, transfer tank 3 can all be dual-purpose tank;Valve is equipped on the liquid inlet pipe and liquid outlet pipe of dual-purpose tank, and the liquid outlet of dual-purpose tank is communicated with the liquid inlet of commercial sodium hypochlorite booster pump 4 and online proportion dilution device 5 respectively by pipeline with valve, and commercial sodium hypochlorite booster pump 4 is used to deliver high-concentration commercial sodium hypochlorite into dual-purpose tank;The liquid inlet of online proportion dilution device 5 is also communicated with soft water inlet pipe 6, and soft water inlet pipe 6 is used to provide soft water to online proportion dilution device 5;The liquid outlet of online proportion dilution device 5 is communicated with the liquid outlet pipe of sodium hypochlorite generator 1 by pipeline with valve, and the following will be described in detail the main components of the utility model:

[0029] Sodium hypochlorite generator 1 is used for preparing standard concentration sodium hypochlorite online;

[0030] Dosing booster pump 2 is used for delivering sodium hypochlorite solution to dosing point;

[0031] Transfer tank 3 can store standard concentration sodium hypochlorite prepared by sodium hypochlorite generator 1, and the dual-purpose tank therein can also store high-concentration commercial sodium hypochlorite purchased from outside;

[0032] Commercial sodium hypochlorite booster pump 4 is used to deliver high-concentration commercial sodium hypochlorite purchased from outside to dual-purpose tank;

[0033] Online proportion dilution device 5 is used for diluting high-concentration commercial sodium hypochlorite to required concentration in proportion;

[0034] Soft water inlet pipe 6 provides soft water for dilution.

[0035] As Figure 1 shown, online proportion dilution device 5 includes pipeline mixer 51, the liquid outlet of pipeline mixer 51 is communicated with the liquid outlet pipe of sodium hypochlorite generator 1 by pipeline with valve, the liquid inlet of pipeline mixer 51 is communicated with dual-purpose tank and soft water inlet pipe 6 respectively by pipeline, first flow regulating valve 52, first electric valve 53 and first flowmeter 54 are arranged on the pipeline between soft water inlet pipe 6 and pipeline mixer 51, for controlling the opening and closing and flow of soft water delivery;Dilution booster pump 55, second flow regulating valve 56 and second flowmeter 57 are arranged on the pipeline between dual-purpose tank and pipeline mixer 51, for controlling the opening and closing and flow of high-concentration commercial sodium hypochlorite delivery.

[0036] As Figure 1As shown, valves are installed at both the inlet and outlet of the dosing booster pump 2 for convenient control of the dosing system.

[0037] like Figure 1 As shown, a third flow meter 7 is installed on the pipeline between the commercial sodium hypochlorite booster pump 4 and the dual-purpose storage tank, which is used to accurately control the storage amount of high-concentration commercial sodium hypochlorite in the dual-purpose storage tank.

[0038] like Figure 1 As shown, there are two or more dual-purpose storage tanks, which facilitates the batch storage of high-concentration commercial sodium hypochlorite.

[0039] like Figure 1 The following describes the usage method and principle of the online preparation and online dilution fusion dosing system for sodium hypochlorite of this invention: The dosing system includes two modes: online preparation of sodium hypochlorite and dilution fusion of commercial sodium hypochlorite, as detailed below:

[0040] Online preparation mode of sodium hypochlorite:

[0041] Adjust the valves in the system to keep the intermediate storage tank 3 between the sodium hypochlorite generator 1 and the dosing booster pump 2 connected;

[0042] Start the sodium hypochlorite generator 1 to continuously produce standard concentration sodium hypochlorite and deliver it to the connected transfer storage tank 3;

[0043] Start the dosing booster pump 2 to extract standard concentration sodium hypochlorite from the transfer storage tank 3 to the dosing location for use;

[0044] It should be noted that in other embodiments, all transit tanks 3 can also remain connected simultaneously.

[0045] Commercial sodium hypochlorite dilution and blending mode:

[0046] In the online sodium hypochlorite preparation mode, the valve between the dual-purpose storage tank and the sodium hypochlorite generator 1 is closed, while another transfer storage tank 3 is kept connected between the sodium hypochlorite generator 1 and the dosing booster pump 2.

[0047] The standard concentration sodium hypochlorite in the selected dual-purpose storage tank is emptied by adding booster pump 2. Then, the valve at the outlet pipe of the selected dual-purpose storage tank is closed, and the commercial sodium hypochlorite booster pump 4 is started to transport high concentration commercial sodium hypochlorite to the selected dual-purpose storage tank.

[0048] When the standard concentration of sodium hypochlorite supplied by the sodium hypochlorite generator 1 is insufficient, the online proportional dilution device 5 receives high-concentration commercial sodium hypochlorite from the selected dual-purpose storage tank, mixes the high-concentration commercial sodium hypochlorite with soft water provided by the soft water inlet pipe 6 in the online proportional dilution device 5 according to a set ratio to form standard-concentration sodium hypochlorite, and delivers the standard-concentration sodium hypochlorite to the outlet pipe of the sodium hypochlorite generator 1 to supplement the insufficient standard-concentration sodium hypochlorite output by the sodium hypochlorite generator 1.

[0049] As shown in Figure 1 When the standard concentration of sodium hypochlorite supplied by the sodium hypochlorite generator 1 is sufficient, the commercial sodium hypochlorite dilution fusion mode can be enabled to dilute the high-concentration commercial sodium hypochlorite in the dual-purpose storage tank into standard-concentration sodium hypochlorite in batches.

[0050] As shown in Figure 1 In both the sodium hypochlorite online preparation mode and the commercial sodium hypochlorite dilution fusion mode, the transfer storage tank 3 between the sodium hypochlorite generator 1 and the dosing booster pump 2 can be accessed alone, and after the liquid level in the accessed transfer storage tank 3 reaches a set value, the system switches to another transfer storage tank 3 for continuous operation.

[0051] The technical solution of the utility model patent has the following advantages compared with the prior art:

[0052] 1. High automation and precise control

[0053] Full-process automation: Through the linkage control of electric valves, flow regulating valves, flow meters, and booster pumps, the preparation, dilution, storage, and dosing of sodium hypochlorite are fully automated, reducing manual intervention and the risk of operational errors.

[0054] Precise dilution ratio: Through the online proportional dilution device combined with flow regulating valves and flow meters, the flow rates of soft water and sodium hypochlorite are monitored in real time to ensure that the dilution concentration is accurately controllable and avoid the instability of traditional manual proportioning.

[0055] 2. Flexibility and redundancy design

[0056] Flexible switching of dual-purpose storage tanks: At least one of the transfer storage tanks is a "dual-purpose storage tank" that can store both standard-concentration sodium hypochlorite prepared by the sodium hypochlorite generator and high-concentration commercial sodium hypochlorite purchased externally. The system can flexibly switch between sources according to demand, adapting to different scenarios (such as equipment failure, emergency replenishment, etc.).

[0057] Multiple storage tanks in parallel ensure continuous operation: The transfer storage tanks are designed in parallel through pipelines, which can be used alternately or as backups, avoiding system downtime caused by single-tank failure and improving operational stability.

[0058] 3. Safety and risk control

[0059] Avoiding direct addition of high-concentration commercial sodium hypochlorite: By using an online dilution device, high-concentration commercial sodium hypochlorite is diluted to a safe concentration before addition, reducing the risk of direct contact with high-concentration commercial sodium hypochlorite for operators.

[0060] Closed process design: From preparation, dilution to addition, the whole process is transported through closed pipelines, reducing the risk of sodium hypochlorite volatilization and leakage, and ensuring the safety of the working environment.

[0061] 4. Cost optimization

[0062] Reducing transportation and storage costs: Allowing the direct use of standard concentration sodium hypochlorite prepared online, reducing the dependence on high-concentration commercial sodium hypochlorite purchased from outside, and reducing transportation and storage costs.

[0063] Efficient use of resources: Soft water and high-concentration commercial sodium hypochlorite are precisely mixed on demand, avoiding waste caused by excessive dilution or insufficient concentration.

[0064] 5. Quick response and efficient operation

[0065] Online dynamic adjustment: The system can adjust the sodium hypochlorite dosage in real time according to water quality requirements, combined with the rapid mixing ability of the pipeline mixer, to achieve "just-in-time preparation", reducing response time.

[0066] Maintenance convenience: Modular design (such as independent intermediate storage tanks, switchable pipeline valves) facilitates equipment maintenance and component replacement, reducing downtime.

[0067] 6. Environmental protection

[0068] Reducing raw material waste: Precise addition and dilution, avoiding excessive use of sodium hypochlorite, reducing the risk of secondary pollution to the environment.

[0069] Finally, it should be noted that the above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model, although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A system for online preparation and online dilution of sodium hypochlorite combined with dosing, comprising a sodium hypochlorite generator (1) and a dosing booster pump (2), characterized in that: The liquid outlet pipe of the sodium hypochlorite generator (1) is connected in parallel with at least two transfer tanks (3) through pipes, at least one of the transfer tanks (3) is a dual-purpose tank, valves are arranged on the liquid inlet pipe and the liquid outlet pipe of the dual-purpose tank, the dual-purpose tank is respectively communicated with the liquid outlet of the commercial sodium hypochlorite lifting pump (4) and the liquid inlet of the online proportional dilution device (5) through pipes with valves, the commercial sodium hypochlorite lifting pump (4) is used for conveying high-concentration commercial sodium hypochlorite into the dual-purpose tank; the liquid inlet of the online proportional dilution device (5) is also communicated with a soft water inlet pipe (6), the soft water inlet pipe (6) is used for providing soft water to the online proportional dilution device (5); the liquid outlet of the online proportional dilution device (5) is communicated with the liquid outlet pipe of the sodium hypochlorite generator (1) through a pipe with a valve.

2. The online sodium hypochlorite preparation and online dilution combined injection system according to claim 1, characterized in that: The online proportional dilution device (5) comprises a pipe mixer (51), the liquid outlet of the pipe mixer (51) is communicated with the liquid outlet pipe of the sodium hypochlorite generator (1) through a pipe with a valve, the liquid inlets of the pipe mixer (51) are respectively communicated with the dual-purpose tank and the soft water inlet pipe (6) through pipes, a first flow regulating valve (52), a first electric valve (53) and a first flow meter (54) are arranged on the pipe between the soft water inlet pipe (6) and the pipe mixer (51); a dilution lifting pump (55), a second flow regulating valve (56) and a second flow meter (57) are arranged on the pipe between the dual-purpose tank and the pipe mixer (51).

3. The online sodium hypochlorite preparation and online dilution combined injection system according to claim 1, characterized in that: Valves are arranged at the liquid inlet and the liquid outlet of the dosing lifting pump (2).

4. The online sodium hypochlorite preparation and online dilution combined injection system according to claim 1, characterized in that: A third flow meter (7) is arranged on the pipe between the commercial sodium hypochlorite lifting pump (4) and the dual-purpose tank.

5. The online sodium hypochlorite preparation and online dilution combined injection system according to claim 1, characterized in that: The number of the dual-purpose tanks is two or more.

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