Circulating water electrochemical treatment device

Abstract

The present invention discloses a circulating water electrochemical treatment device, including a descaling component, the descaling component includes a shell, a core shaft is installed inside the shell; a first electrode plate and a second electrode plate, the first electrode plate and the second electrode plate are sleeved on the outside of the core shaft, and two adjacent groups of first electrode plates and two adjacent groups of second electrode plates are connected in series through a wire; and a first floating electrode and a second floating electrode, the floating electrode is in contact with different electrode plates. The circulating water electrochemical treatment device described in the present invention adopts a descaling component combined with a chemical doser to perform multi-effect comprehensive treatment on the circulating water system, the descaling component reduces the hardness of calcium and magnesium in the water, precipitates scale and discharges it out of the system regularly, and has the effect of preventing and removing scale for the heat exchanger of the central air conditioner. At the same time, the chemical doser is used to perform anti-corrosion protection on the equipment by adding corrosion inhibitors and bactericidal algaecides, and the circulating water is disinfected to kill Legionella and other bacteria and algae.

Description

Technical Field

[0001] The invention relates to the technical field of circulating water treatment, and in particular to a circulating water electrochemical treatment device. Background Art

[0002] Calcium and magnesium hardness in circulating water is the main cause of scaling of heat exchange equipment. The existing technology uses electrolysis to collect calcium and magnesium ions in water in water treatment equipment, thereby reducing the content of calcium and magnesium ions in circulating water, ensuring that heat exchange equipment is prevented from scaling at low concentrations of hardness, and improving heat exchange efficiency.

[0003] The electric descaling technology uses an external DC power supply. There are positive and negative electrodes inside the water treatment equipment. When the power is on, calcium and magnesium ions are precipitated on the negative electrode in the form of crystals of calcium carbonate (magnesium carbonate, magnesium hydroxide). When the scale accumulates to a certain amount, it is removed mechanically and the scale is discharged out of the equipment, and the electrode plate restores its descaling ability.

[0004] The existing circulating water treatment device has the following defects when in use:

[0005] 1. Low descaling efficiency; 2. High energy consumption; 3. Frequent replacement of anodes; 4. Corrosion of the equipment body. 5. Incomplete descaling; 6. Large maintenance workload (regular cleaning of electrode plates). For this reason, we propose a circulating water electrochemical treatment device. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a circulating water electrochemical treatment device, which aims to solve the technical problems of scaling, corrosion, and algae in the circulating water system by adopting a high-efficiency electro-descaling (EDS) assisted chemical dosing method.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A circulating water electrochemical treatment device, the treatment device comprising a descaling component, the descaling component comprising:

[0011] A housing, wherein a core shaft is installed inside the housing, and a transmission motor for driving the core shaft to rotate is installed on the top of the housing;

[0012] First electrode plates and second electrode plates, wherein the first electrode plates and the second electrode plates are alternately sleeved on the outside of the core shaft from top to bottom, and two adjacent groups of first electrode plates and two adjacent groups of second electrode plates are connected in series through wires; and

[0013] The first floating electrode and the second floating electrode are both plugged into the inner wall of the housing, and the first floating electrode contacts the first electrode plate through a sliding contact, and the second floating electrode contacts the second electrode plate through a sliding contact.

[0014] Preferably, two groups of connecting pipes communicating with the interior of the shell are installed outside the shell, and the two groups of connecting pipes correspond to each other up and down, and the outsides of the two groups of connecting pipes are connected to water outlet valves and water inlet valves.

[0015] By installing connecting pipes on the outside of the shell, and connecting the two sets of connecting pipes with water inlet valves and water outlet valves on the outside, the on-off and flow rate of the water flow inside the shell can be controlled, so that the water flows upward from the bottom of the shell, thereby slowing down the water flow rate and facilitating full descaling.

[0016] Preferably, a water flow switch for controlling the on and off of the connecting pipe is installed inside the connecting pipe.

[0017] Preferably, a scale discharge pipe is provided at the bottom of the shell, and a scale discharge valve is connected to the bottom of the scale discharge pipe. The bottom of the shell is funnel-shaped, and scale can be collected.

[0018] Preferably, the descaling assembly further comprises an electric control box for controlling the descaling assembly, and the descaling valve, the water flow switch, the first floating electrode, the second floating electrode and the transmission motor are electrically connected to the electric control box via wires respectively.

[0019] Preferably, the first electrode plate and the second electrode plate are both circular meshes, and an insulating pad is provided between the first electrode plate and the second electrode plate. By providing the insulating pad between the first electrode plate and the second electrode plate, mutual interference between the electrode plates can be prevented.

[0020] Preferably, an exhaust valve is installed on the top of the shell, and the exhaust valve is connected to the interior of the shell.

[0021] Preferably, the bottom end of the core shaft is connected to a bearing seat, and a bracket for supporting the core shaft is provided between the bearing seat and the inner wall of the shell.

[0022] Preferably, the treatment device further comprises: a central air-conditioning condenser, a cooling tower, a circulation pump and a dosing device, wherein:

[0023] The water inlet valve is connected to the water outlet of the circulation pump through a pipeline, and the water outlet valve is connected to the water inlet of the circulation pump through a pipeline;

[0024] The central air conditioning condenser, the cooling tower and the circulating pump are connected in series through pipelines to form a circulating water loop, and the cooling tower is connected to the water inlet of the circulating pump, and the central air conditioning condenser is connected to the water outlet of the circulating pump;

[0025] The dosing devices are arranged in multiple groups, and the drug outlets of the multiple groups of dosing devices are all connected with the water inlet of the circulation pump through pipelines.

[0026] Preferably, the dosing device is electrically connected to the electric control box via a wire.

[0027] By adding a doser to the treatment device, different agents can be added into the circulating water under the control of an electric control box. The doser comprises a water pump and a water tank. Additives are stored inside the water tank, and the water pump is connected to the water tank.

[0028] (III) Beneficial effects

[0029] The present invention combines a descaling component with a chemical doser to perform multi-effect comprehensive treatment on a circulating water system. The descaling component reduces the hardness of calcium and magnesium in the water, precipitates scale and discharges it out of the system regularly, and has the effect of preventing and removing scale on the heat exchanger of the central air conditioner. At the same time, the chemical doser is used to add corrosion inhibitors and bactericides and algaecides to protect the equipment from corrosion, and the circulating water is disinfected to kill Legionella and other bacteria and algae. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0031] Figure 1 It is a structural diagram of the descaling component in the circulating water electrochemical treatment device of the present invention;

[0032] Figure 2 It is a connection diagram of the descaling components in the circulating water electrochemical treatment device of the present invention.

[0033] Legend: 1. Transmission motor; 2. Exhaust valve; 3. Shell; 4. Water outlet valve; 5. First electrode plate; 6. Second electrode plate; 7. Water flow switch; 8. Water inlet valve; 9. Descaling valve; 10. Bearing seat; 11. Insulating pad; 12. Mandrel; 13. First floating electrode; 14. Second floating electrode; 15. Electric control box; 16. Descaling assembly; 17. Dosing device; 18. Central air conditioning condenser; 19. Cooling tower; 20. Circulation pump. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In addition, for the convenience of description below, the referenced "upper", "lower", "left", and "right" are the same as the upper, lower, left, and right directions of the drawings themselves. The "first", "second", etc. below are distinguished for the description and have no other special meanings.

[0035] In view of the problems existing in the prior art, refer to Figure 1 As shown, the present invention provides a circulating water electrochemical treatment device, the treatment device includes a descaling component 16, and the descaling component 16 includes:

[0036] A housing 3, wherein a core shaft 12 is installed inside the housing 3, and a transmission motor 1 for driving the core shaft 12 to rotate is installed on the top of the housing 3;

[0037] The first electrode plates 5 and the second electrode plates 6 are alternately sleeved on the outside of the core shaft 12 from top to bottom, and two adjacent groups of the first electrode plates 5 and two adjacent groups of the second electrode plates 6 are connected in series through wires; and

[0038] The first floating electrode 13 and the second floating electrode 14 are both plugged into the inner wall of the housing 3 , and the first floating electrode 13 contacts the first electrode plate 5 through a sliding contact, and the second floating electrode 14 contacts the second electrode plate 6 through a sliding contact.

[0039] Reference Figure 1 As shown, two groups of connecting pipes communicating with the interior of the housing 3 are installed outside the housing 3, and the two groups of connecting pipes correspond to each other up and down, and the outsides of the two groups of connecting pipes are connected to the water outlet valve 4 and the water inlet valve 8.

[0040] By installing a connecting pipe on the outside of the shell 3, and connecting the two sets of connecting pipes to the outside with a water inlet valve 4 and a water outlet valve 8, the on-off and flow rate of the water flow inside the shell 3 can be controlled, so that the water flows upward from the bottom of the shell 3, thereby slowing down the water flow rate and facilitating full descaling.

[0041] Reference Figure 1 As shown, a water flow switch 7 for controlling the on and off of the connecting pipe is installed inside the connecting pipe.

[0042] Reference Figure 1 As shown, a scale discharge pipe is provided at the bottom of the shell 3, and a scale discharge valve 9 is connected to the bottom of the scale discharge pipe. The bottom of the shell 3 is funnel-shaped, which can collect scale.

[0043] Reference Figure 1 As shown, the descaling assembly 16 also includes an electric control box 15 for controlling the descaling assembly 16, and the descaling valve 9, the water flow switch 7, the first floating electrode 13, the second floating electrode 14 and the transmission motor 1 are electrically connected to the electric control box 15 through wires.

[0044] Reference Figure 1 As shown, the first electrode plate 5 and the second electrode plate 6 are both circular meshes, and an insulating pad 11 is provided between the first electrode plate 5 and the second electrode plate 6. By providing the insulating pad 11 between the first electrode plate 5 and the second electrode plate 6, mutual interference between the electrodes can be prevented.

[0045] Reference Figure 1 As shown, an exhaust valve 2 is installed on the top of the shell 3, and the exhaust valve 2 is connected to the interior of the shell 3.

[0046] Reference Figure 1 As shown, the bottom end of the core shaft 12 is connected to the bearing seat 10 , and a bracket for supporting the core shaft 12 is provided between the bearing seat 10 and the inner wall of the housing 3 .

[0047] Reference Figure 2 As shown, the treatment device also includes: a central air conditioning condenser 18, a cooling tower 19, a circulating pump 20 and a dosing device 17, wherein:

[0048] The water inlet valve 8 is connected to the water outlet of the circulation pump 20 through a pipeline, and the water outlet valve 4 is connected to the water inlet of the circulation pump 20 through a pipeline;

[0049] The central air conditioning condenser 18, the cooling tower 19 and the circulating pump 20 are connected in series through pipelines to form a circulating water loop, and the cooling tower 19 is connected to the water inlet of the circulating pump 20, and the central air conditioning condenser 18 is connected to the water outlet of the circulating pump 20;

[0050] There are multiple groups of dosing devices 17, and the drug outlets of the multiple groups of dosing devices 17 are connected to the water inlet of the circulation pump 20 through pipelines. By adding dosing devices 17 to the treatment device, different agents can be controlled to be added into the circulating water through the electric control box 15. The dosing devices 17 include a water pump and a water tank. Additives, corrosion inhibitors, bactericides and algaecides are stored in different water tanks, and the water pump is connected to the water tank.

[0051] Reference Figure 2 As shown, the doser 17 is electrically connected to the electric control box 15 via a wire.

[0052] During scale analysis, there are DC power supply, controller, frequency converter, etc. inside the electric control box 15. DC power is respectively loaded onto the first electrode 6 and the second electrode 5 through the first floating electrode 13 and the second floating electrode 14 through the sliding contacts. The first electrode 6 and the second electrode 5 are circular mesh structures, composed of a plurality of pieces, and are insulated by the insulating pad 11. The first electrode 5 is connected in series with the first electrode 5 through a wire, and the second electrode 6 is connected in series with the second electrode 6 through a wire, and they are combined together through the core shaft 12 and insulated from the core shaft 12. The core shaft 12 is mechanically connected to the housing 3 through the bearing seat 10.

[0053] When the circulating water enters the descaling assembly 16 from the water inlet valve 8, the exhaust is carried out through the exhaust valve 2, the water fills the device, the water flow switch 7 is closed, and the electric control box 15 outputs a direct current after giving a signal through the water flow switch 7. At this time, the first plate 5 is a positive plate and the second plate 6 is a negative plate. When the water flows from bottom to top through the space between the second plate 6 (negative plate) with an electric field and the first plate 5 (positive plate), the positively charged calcium and magnesium ions in the water move to the second plate 6 (negative electrode) under the action of the electric field, and crystallize and precipitate scale on the second plate 6 (negative electrode). When the scale accumulates to a certain thickness, the electric control box 15 automatically interchanges the polarity output of the DC power supply, and the second plate 6 and the first plate 5 also become positive electrodes and negative electrodes respectively. A reverse electric field is applied between the plates, and the first plate 5 that originally had no scale precipitation also begins to precipitate scale after becoming a negative plate, so that the space of the plates is fully utilized to increase the scale holding space, and the exchange of positive and negative plates prolongs the service life of the plates.

[0054] During descaling, under the premise that the water flow switch 7 is disconnected, the system calculates the accumulated thickness of the scale according to the change of electric field induction. When a certain thickness is reached, the electric control box 15 outputs a descaling mode signal to drive the inverter, and the inverter drives the transmission motor 1 to rotate. The transmission motor 1 is driven by the mandrel 12, and the plate stack (the first floating electrode 13, the second floating electrode 14, the second plate 6 and the first plate 5), the first floating electrode 13 and the second floating electrode 14 are in sliding contact with the second plate 6 and the first plate 5 respectively). The plate stack is driven by the transmission motor 1 driven by the inverter, and the rotation is slow to fast. The scale precipitated between the plates is separated from the plates under the combined action of centrifugal force and the shear force of water and the plates, and is thrown to the inner wall of the shell 3. It is precipitated to the conical bottom of the bottom of the shell 3 under the action of vortex and gravity, and the transmission motor 1 is stopped after rotating for a certain time (which can be set). The descaling valve 9 is opened for descaling, and the descaling valve 9 is closed after descaling is completed.

[0055] First, it makes the circulating water heat exchanger system scale-free, kills bacteria and algae, prevents system corrosion, and further improves the water quality, so that the heat exchange efficiency of the heat exchanger does not decrease, and energy-saving, water-saving and environmentally friendly operation is achieved.

[0056] Second, compared with traditional water treatment methods, the air-conditioning system is expected to save more than 30% energy and more than 40% water, without the need to add chemical agents (scaling inhibitors).

[0057] Third, the device is highly intelligent and unmanned, which reduces the overall maintenance cost of the air-conditioning refrigeration system.

[0058] When the descaling component 16 is in use, the doser 17 can be controlled to add chemical reagents to the circulating water, and the medium entering and exiting the circulating pump 20 is introduced into the descaling component 16 to remove the calcium and magnesium ions in the medium. The descaling medium re-enters the circulation structure (the circulation structure includes a cooling tower 19, a circulating pump 20 and a central air-conditioning condenser 18 connected in series through pipelines) for circulation, so as to be reused.

[0059] Example

[0060] Reference Figure 1 As shown, the present invention provides a circulating water electrochemical treatment device, the treatment device includes a descaling component 16, and the descaling component 16 includes:

[0061] A housing 3, wherein a core shaft 12 is installed inside the housing 3, and a transmission motor 1 for driving the core shaft 12 to rotate is installed on the top of the housing 3;

[0062] The first electrode plates 5 and the second electrode plates 6 are alternately sleeved on the outside of the core shaft 12 from top to bottom, and two adjacent groups of the first electrode plates 5 and two adjacent groups of the second electrode plates 6 are connected in series through wires; and

[0063] The first floating electrode 13 and the second floating electrode 14 are both plugged into the inner wall of the housing 3 , and the first floating electrode 13 contacts the first electrode plate 5 through a sliding contact, and the second floating electrode 14 contacts the second electrode plate 6 through a sliding contact.

[0064] Reference Figure 1 As shown, two groups of connecting pipes communicating with the interior of the housing 3 are installed outside the housing 3, and the two groups of connecting pipes correspond to each other up and down, and the outsides of the two groups of connecting pipes are connected to the water outlet valve 4 and the water inlet valve 8.

[0065] Reference Figure 1 As shown, a water flow switch 7 for controlling the on and off of the connecting pipe is installed inside the connecting pipe.

[0066] Reference Figure 1 As shown, a scale discharge pipe is provided at the bottom of the shell 3, and a scale discharge valve 9 is connected to the bottom of the scale discharge pipe.

[0067] Reference Figure 1As shown, the descaling assembly 16 also includes an electric control box 15 for controlling the descaling assembly 16, and the descaling valve 9, the water flow switch 7, the first floating electrode 13, the second floating electrode 14 and the transmission motor 1 are electrically connected to the electric control box 15 through wires.

[0068] Reference Figure 1 As shown, the first electrode plate 5 and the second electrode plate 6 are both circular meshes, and an insulating pad 11 is provided between the first electrode plate 5 and the second electrode plate 6 .

[0069] Reference Figure 1 As shown, an exhaust valve 2 is installed on the top of the shell 3, and the exhaust valve 2 is connected to the interior of the shell 3.

[0070] Reference Figure 1 As shown, the bottom end of the core shaft 12 is connected to the bearing seat 10 , and a bracket for supporting the core shaft 12 is provided between the bearing seat 10 and the inner wall of the housing 3 .

[0071] Reference Figure 2 As shown, the treatment device also includes: a central air conditioning condenser 18, a cooling tower 19, a circulating pump 20 and a dosing device 17, wherein:

[0072] The water inlet valve 8 is connected to the water outlet of the circulation pump 20 through a pipeline, and the water outlet valve 4 is connected to the water inlet of the circulation pump 20 through a pipeline;

[0073] The central air conditioning condenser 18, the cooling tower 19 and the circulating pump 20 are connected in series through pipelines to form a circulating water loop, and the cooling tower 19 is connected to the water inlet of the circulating pump 20, and the central air conditioning condenser 18 is connected to the water outlet of the circulating pump 20;

[0074] There are multiple groups of dosing devices 17, and the drug outlets of the multiple groups of dosing devices 17 are connected to the water inlet of the circulation pump 20 through pipelines.

[0075] Reference Figure 2 As shown, the doser 17 is electrically connected to the electric control box 15 via a wire.

[0076] Those skilled in the art will understand that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for the implementation of this patent.

[0077] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0078] The above disclosure is only a specific implementation scenario of this patent, but this patent is not limited to this. Any changes that can be thought of by technicians in this field should fall within the scope of protection of this patent.

Claims

1. A circulating water electrochemical treatment device, characterized in that: The treatment device comprises a descaling assembly (16), wherein the descaling assembly (16) comprises: A housing (3), wherein a core shaft (12) is installed inside the housing (3), and a transmission motor (1) for driving the core shaft (12) to rotate is installed on the top of the housing (3); A first electrode plate (5) and a second electrode plate (6), wherein the first electrode plate (5) and the second electrode plate (6) are alternately sleeved on the outside of the core shaft (12) from top to bottom, and two adjacent groups of first electrode plates (5) and two adjacent groups of second electrode plates (6) are connected in series via wires; and A first floating electrode (13) and a second floating electrode (14) respectively connected to the positive and negative electrodes of an external power source, the first floating electrode (13) and the second floating electrode (14) are both plugged into the inner wall of the housing (3), and the first floating electrode (13) contacts the first electrode plate (5) through a sliding contact, and the second floating electrode (14) contacts the second electrode plate (6) through a sliding contact; Two groups of connecting pipes connected to the interior of the housing (3) are installed on the outside of the housing (3), and the two groups of connecting pipes correspond to each other from top to bottom. The outsides of the two groups of connecting pipes are connected to a water outlet valve (4) and a water inlet valve (8); A water flow switch (7) for controlling the on and off of the connecting pipe is installed inside the connecting pipe; The bottom of the shell (3) is provided with a descaling pipe, and the bottom of the descaling pipe is connected to a descaling valve (9); The descaling component (16) further comprises an electric control box (15) for controlling the descaling component (16), and the descaling valve (9), the water flow switch (7), the first floating electrode (13), the second floating electrode (14) and the transmission motor (1) are electrically connected to the electric control box (15) via wires respectively; The first electrode plate (5) and the second electrode plate (6) are both circular mesh sheets, and an insulating pad (11) is provided between the first electrode plate (5) and the second electrode plate (6); An exhaust valve (2) is installed on the top of the shell (3), and the exhaust valve (2) is connected to the interior of the shell (3).

2. The circulating water electrochemical treatment device according to claim 1, characterized in that: The bottom end of the core shaft (12) is connected to a bearing seat (10), and a bracket for supporting the core shaft (12) is provided between the bearing seat (10) and the inner wall of the housing (3).

3. The circulating water electrochemical treatment device according to claim 1, characterized in that: The treatment device further comprises: a central air-conditioning condenser (18), a cooling tower (19), a circulation pump (20) and a dosing device (17), wherein: The water inlet valve (8) is connected to the water outlet of the circulation pump (20) through a pipeline, and the water outlet valve (4) is connected to the water inlet of the circulation pump (20) through a pipeline; The central air conditioning condenser (18), the cooling tower (19) and the circulating pump (20) are sequentially connected in series through pipelines to form a circulating water loop, and the cooling tower (19) is connected to the water inlet of the circulating pump (20), and the central air conditioning condenser (18) is connected to the water outlet of the circulating pump (20); The drug dosing devices (17) are provided in multiple groups, and the drug outlets of the multiple groups of drug dosing devices (17) are all connected to the water inlet of the circulation pump (20) through pipelines.

4. The circulating water electrochemical treatment device according to claim 3, characterized in that: The drug adding device (17) is electrically connected to the electric control box (15) via a wire.

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