Integrated full-automatic electrochemical descaling system

Abstract

The utility model relates to the technical field of water treatment, in particular to an integrated full-automatic electrochemical descaling system. The integrated full-automatic electrochemical descaling system comprises a box body, and a water inlet and a water outlet are formed in the box body; the electrochemical descaling unit is arranged in the box body; the electrochemical descaling unit comprises a power supply device and an electrode plate connected to the power supply device; the electrode regeneration unit comprises a driving device and a scraper; the driving device drives the scraper to scrape dirt on the electrode plate; the sludge discharge unit is arranged at the bottom of the box body; and a sludge discharge device of the sludge discharge unit can discharge sludge in a sludge discharge hopper. And the scraper scrapes dirt on the electrode plate to the sludge discharge hopper from top to bottom. And the sludge discharging device forcibly discharges the dirt, so that the dirt is discharged more cleanly. The electrochemical descaling system is highly integrated, achieves full-automatic descaling, has the advantages of being high in descaling efficiency, large in water treatment amount, small in occupied space and the like, does not need to be shut down, can continuously run, and saves the time cost of shutdown maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field especially is a kind of integrated full-automatic electrochemical descaling system. BACKGROUND

[0002] Industrial water occupies the main proportion of total water consumption in China, among which circulating cooling water accounts for a major part. However, problems such as equipment corrosion and scaling, microbial reproduction are prone to occur in the circulating cooling water system during operation, which reduces the heat exchange efficiency of the system and increases the energy consumption of the system, and is not conducive to the stable operation of the system. Common descaling methods include chemical agent descaling method, ultrasonic physical descaling method and electrochemical descaling method. Electrochemical descaling method does not require additional reagent addition, has low energy consumption, simple technology and other advantages, and is considered as one of the most promising descaling technologies.

[0003] However, some electrochemical descaling equipment on the market removes scale by rotating the electrode plate, which makes the electrode plate scrape on the scraper, and then removes the dirt on the electrode plate. The dirt scraped off by this method will be disturbed by the rotating electrode plate, affecting the deposition of the dirt. In addition, some electrochemical descaling equipment removes dirt by gravity, which is not thorough and cannot completely remove the dirt.

[0004] For example, Chinese patent application No. CN202223060523.4 discloses a sewage electrode descaling device, which specifically discloses that "after the sewage to be treated enters the electrode box, the cathode plate and the anode plate are electrified at the same time, the main shaft is rotated, and the scaling on the surface of the cathode plate is cleaned by the descaling knife. The removed dirt falls into the collecting box and is discharged through the slag discharge port". The dirt scraped off will be disturbed by the rotating electrode plate, affecting the deposition of the dirt. The dirt is removed by gravity, which is not thorough and cannot completely remove the dirt.

[0005] Chinese patent application No. CN202322329634.9 discloses an automatic scraper descaling electrode, which specifically discloses that "the driving motor drives the rotating shaft to rotate, the cathode plate rotates with the rotating shaft, and the scraper removes the dirt on the cathode plate when the cathode plate rotates". Similarly, the dirt scraped off will be disturbed by the rotating electrode plate, affecting the deposition of the dirt. The dirt is removed by gravity, which is not thorough and cannot completely remove the dirt. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model provides an integrated full-automatic electrochemical descaling system, which uses a scraper to remove the dirt on the electrode plate, which is conducive to the deposition of the dirt. The dirt is removed by strong discharge, which is more thorough, thereby overcoming the shortcomings of the prior art.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] The application provides an integrated full-automatic electrochemical descaling system, comprising a box, a water inlet and a water outlet are arranged on the box;

[0009] The water inlet and outlet unit comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the water inlet, and the water outlet pipe is connected with the water outlet;

[0010] The electrochemical descaling unit is arranged in the box; the electrochemical descaling unit comprises a power supply device and electrode plates connected with the power supply device;

[0011] The electrode regeneration unit comprises a driving device and a scraper; the scraper is connected with the driving device, and the driving device drives the scraper to remove dirt on the electrode plates;

[0012] The sludge discharge unit is arranged at the bottom of the box; the sludge discharge unit comprises a sludge discharge hopper and a sludge discharge device arranged in the sludge discharge hopper, and the sludge discharge device can discharge sludge in the sludge discharge hopper.

[0013] Preferably, the water inlet is arranged at the upper left side of the box, the water outlet is arranged at the lower right side of the box, the water inlet pipe is provided with a first flow regulating valve, and the water outlet pipe is provided with a second flow regulating valve.

[0014] Preferably, the electrode plates comprise anode plates and cathode plates; the anode plates and the cathode plates are arranged alternately, and an ion membrane is arranged in the gap between the anode plates and the cathode plates.

[0015] Preferably, the anode plates and the cathode plates are of a hollow structure; water flow can flow through the hollow parts of the anode plates and the cathode plates.

[0016] Preferably, the cathode plates are more than the anode plates by one anode plate, and the cathode plates are arranged at the outermost side.

[0017] Preferably, the front surface and the back surface of the cathode plate are both provided with the scraper.

[0018] Preferably, the anode plates are titanium electrode plates or ruthenium electrode plates, and the cathode plates are stainless steel electrode plates or aluminum electrode plates.

[0019] Preferably, the width of the scraper is greater than the width of the electrode plate, and the distance between the scraper and the cathode plate is less than 1 mm.

[0020] Preferably, the driving device comprises a first motor, a gearbox and a guide rail; the guide rail is arranged in the box, the output end of the motor is connected with the input end of the gearbox, the output end of the gearbox is provided with a first sprocket, the scraper is arranged on a tool holder, the tool holder is provided with a second sprocket, a chain is arranged between the first sprocket and the second sprocket, and the tool holder moves up and down on the guide rail.

[0021] Preferably, the sludge discharging device comprises a sewage valve, a second motor, and a screw rod connected to the output end of the second motor, the sewage valve is arranged in the sludge discharge hopper, and the screw rod conveys the sludge to the sewage valve.

[0022] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, according to the above technical scheme, when dirt is removed, the driving device drives the scraper to move slowly from top to bottom, and the scraper removes the dirt on the electrode plate. The scraped dirt slowly falls into the sludge discharge hopper, and this design does not disturb the dirt, which is beneficial to the rapid sedimentation of the dirt into the sludge discharge hopper.

[0023] The dirt falls into the sludge discharge hopper for collection, and then the sludge discharging device discharges the dirt through the forced discharge mode, so that the dirt is discharged more completely and cleanly. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a side view schematic diagram of the embodiment of the utility model.

[0025] Fig. 2 It is a partial structure schematic diagram of the embodiment of the utility model.

[0026] Fig. 3 It is a scraper arrangement schematic diagram of the embodiment of the utility model.

[0027] BRIEF DESCRIPTION OF DRAWINGS:

[0028] 10, box body;11, water inlet;12, water outlet;20, electrochemical dirt removal unit;22, anode plate;23, ion membrane;24, cathode plate;30, electrode regeneration unit;31, driving device;32, first motor;33, gearbox;34, guide rail;35, scraper;40, sludge discharge unit;41, sludge discharge hopper;42, sludge discharging device;43, sewage valve;44, second motor;45, screw rod. DETAILED DESCRIPTION

[0029] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0030] Please refer to Figs. 1 to 3 It shows the specific structure of the preferred embodiment of the utility model, which is a kind of integrated full-automatic electrochemical dirt removal system.

[0031] Among them, when dirt is scraped, the electrode plate is stationary, and the scraper 35 removes the dirt from top to bottom. The dirt will quickly sediment into the sludge discharge hopper 41. The sludge discharging device 42 discharges the dirt in the sludge discharge hopper 41 through the forced discharge mode, so that the dirt is discharged more cleanly and completely.

[0032] The application provides an integrated full-automatic electrochemical descaling system, which comprises a box body 10, a water inlet 11 and a water outlet 12 are arranged on the box body 10; a water inlet pipe and a water outlet pipe are arranged on the water inlet and outlet unit, the water inlet pipe is connected with the water inlet 11, and the water outlet pipe is connected with the water outlet 12; an electrochemical descaling unit 20 is arranged in the box body 10; the electrochemical descaling unit 20 comprises a power supply device and electrode plates connected with the power supply device; an electrode regeneration unit 30 comprises a driving device 31 and a scraper 35; the scraper 35 is connected with the driving device 31, and the driving device 31 drives the scraper 35 to scrape off dirt on the electrode plates; a sludge discharge unit 40 is arranged at the bottom of the box body 10; the sludge discharge unit 40 comprises a sludge discharge hopper 41 and a sludge discharge device 42 arranged on the sludge discharge hopper 41, and the sludge discharge device 42 can discharge sludge in the sludge discharge hopper 41. The box body 10 can adopt a stainless steel box body 10, which has good rust prevention and corrosion resistance. The water inlet pipe is connected with a first water pump, and the water outlet pipe is connected with a second water pump; the first water pump and the second water pump enable sewage to flow. The water inlet pipe and the water outlet pipe are both provided with flow regulating valves for controlling flow. The power supply device is a power supply control system, which can provide power supply and control for the system, the anode plate 22 and the cathode plate 24 are connected with the power supply device, and electrochemical descaling can be performed after power supply. The power supply control system mainly comprises the following parts: a control system. The electrochemical descaling device usually uses a direct current power supply to ensure the stability and directionality of the current, so that the electrochemical reaction is effectively performed. The control system is used for adjusting and monitoring the current density and potential difference, so that the electrochemical reaction is performed under the best conditions. Through the control system, the required current density can be set and adjusted to adapt to different descaling requirements and treatment effects. Specifically, the power supply control system can provide current for the electrodes in the electrochemical descaling area, and the set current and voltage are adjusted according to the total area of the electrodes. When the electrochemical descaling system descales, it does not need to stop, can realize cleaning while descaling, and enables the system to continuously operate, thereby saving the time cost of stoppage maintenance.

[0033] When descaling, the electrode plate is stationary, the driving device 31 drives the scraper 35 to move from top to bottom, and then the dirt on the electrode plate is slowly scraped off. The dirt cannot be disturbed by the scraper 35, and the dirt can fall into the sludge discharge hopper 41 and deposit more quickly. The sludge discharge device 42 can discharge the sludge in the sludge discharge hopper 41 through forced discharge, and this design can more thoroughly discharge sludge and has higher working efficiency.

[0034] Preferably, the water inlet 11 is arranged at the upper left side of the box 10, and the water outlet 12 is arranged at the lower right side of the box 10. This design is to enter water from the upper end and discharge water from the lower end, which helps to quickly discharge sewage under the action of gravity. The water inlet pipe is provided with a first flow regulating valve, and the water outlet pipe is provided with a second flow regulating valve. The first flow regulating valve and the second flow regulating valve can be solenoid valves, which can be remotely adjusted and have high automation degree.

[0035] Preferably, the electrode plate includes an anode plate 22 and a cathode plate 24; the anode plate 22 and the cathode plate 24 are arranged alternately, and an ion membrane 23 is arranged in the gap between the anode plate 22 and the cathode plate 24. The anode plate 22 and the cathode plate 24 in the embodiment are connected to a direct current power supply. The ion membrane 23 is a special membrane material that can selectively allow certain ions to pass through while preventing other ions or molecules from passing through. After the anode plate 22 and the cathode plate 24 are electrified, the dirt can be removed by electrochemical reaction. The number of scrapers 35 is consistent with the number of cathode plates 24, or the number of scrapers 35 is twice the number of cathode plates 24. When the number of scrapers 35 is twice the number of cathode plates 24, the front and back surfaces of the cathode plate 24 are provided with scrapers 35, which can clean the front and back surfaces of the cathode plate 24, so that the cleaning effect is better. Of course, the cathode plate 24 and the anode plate 22 can be provided with scrapers 35, and the cathode plate 24 and the anode plate 22 can be cleaned at the same time.

[0036] Preferably, the anode plate 22 and the cathode plate 24 are hollow structures; water flow can pass through the hollow parts of the anode plate 22 and the cathode plate 24. The cathode plate 24 is one more than the anode plate 22, and the outermost arrangement is the cathode plate 24. The anode plate 22 is a titanium electrode plate or a ruthenium electrode plate, and the cathode plate 24 is a stainless steel electrode plate or an aluminum electrode plate. Preferably, the ion membrane 23 of cellulose membrane is placed between the anode plate 22 and the cathode plate 24 to separate the anode plate 22 and the cathode plate 24, forming an anode plate 22 area-cathode plate 24 area-anode plate 22 area sequence arrangement. The electrode plate is a hollow plate, and the water flow can pass through the hollow part of the electrode, which is helpful for electrochemical reaction.

[0037] As a preferred scheme, the number of anode plates 22 and cathode plates 24 in the electrochemical scale removal area is n and n+1 respectively, n is adjusted according to the water inflow and water quality, the anode plate 22 is not limited to titanium plate, ruthenium electrode plate and other catalytic electrodes, and the cathode plate 24 is not limited to stainless steel plate and other inert stable electrodes.

[0038] Preferably, the width of the scraper 35 is greater than the width of the electrode plate, and the distance between the scraper 35 and the cathode plate is less than 1mm. This distance can scrape off the dirt on the electrode plate without damaging the electrode plate.

[0039] Preferably, the driving device 31 comprises a first motor 32, a gearbox 33, and a guide rail 34; the guide rail 34 is arranged on the box 10, the output end of the motor is connected with the input end of the gearbox 33; the output end of the gearbox 33 is provided with a first chain wheel, and the scraper 35 is arranged on the tool holder which is provided with a second chain wheel; the first chain wheel and the second chain wheel are provided with a chain therebetween, and the tool holder moves up and down on the guide rail 34. The power of the first motor 32 is transmitted to the chain through the gearbox 33, the chain drives the tool holder to move up and down on the guide rail 34, and then the scraper 35 can scrape the dirt on the electrode plate.

[0040] Preferably, the sludge discharging device 42 comprises a sludge valve 43, a second motor 44, and a screw rod 45 connected with the output end of the second motor 44; the sludge valve 43 is arranged on the sludge hopper 41, and the screw rod 45 delivers the sludge to the sludge valve 43. The shape of the sludge hopper 41 can be conical, with a wide upper opening and a narrow lower opening, for storing and discharging sludge. The second motor 44 drives the screw rod 45 to rotate, the screw rod 45 delivers the sludge to the sludge valve 43, and the dirt is discharged from the sludge valve 43. This design is a forced sludge discharge mode, which can completely remove the dirt.

[0041] More specifically, the total width of the integrated full-automatic electrochemical descaling system is 1740 mm, the total height is 3515.5 mm, and the total length is 3191.2 mm. The system occupies an area of 1390x2000 mm, and the total area of the land occupied is 2.78 m 2 . The electrochemical descaling area 2000 (long) x 1390 (wide) x 900 (high) mm, and the effective water volume is about 2.5 m 3 . The electrode regeneration unit 30 is configured with two first electrodes, which are respectively arranged at the upper left and upper right corners of the system; the width of the scraper 35 is 1000 mm, and the distance between the scraper 35 and the cathode is 0.8 mm. The electrochemical descaling unit 20 is equipped with 25 pieces of 900x900 mm ruthenium hollow anode sheets and 26 pieces of 900x900 mm stainless steel hollow cathode sheets; the input current density of the power supply device is 10 mA / cm 2 ; the water inlet flow rate is 1 m 3 / min, and the residence time of each water passing is 2.5 min. The sludge discharging unit 40 has a height of 160 mm, a width of 160 mm, and a length of 321 mm; the diameter of the sludge valve 43 is 200 mm; the rod cross-section diameter of the screw rod is 80 mm, the propeller blade diameter is 200 mm, and the total length is 2870.2 mm.

[0042] The influent water quality is that COD is about 200-300 mg·L-1, and hardness is 100-500 mg·L-1 (calculated by calcium carbonate). After the electrochemical descaling system is stably operated, the COD removal rate is greater than 60%, the effluent COD concentration is 70-100 mg·L-1, the hardness ion removal rate is greater than 50%, and the effluent hardness is 50-200 mg·L-1. After 100 water cycles, the electrode regeneration system and the sludge discharge system are intervened to work, the cathode can be regenerated effectively, and the sludge in the sludge discharge area can be quickly discharged. The treatment effect of the embodiment shows that the new descaling system is highly integrated, realizes full-automatic descaling, has the advantages of high descaling efficiency, large water treatment capacity, small occupied space and the like.

[0043] Therefore, the electrochemical descaling system is highly integrated, realizes full-automatic descaling, has the advantages of high descaling efficiency, large water treatment capacity, small occupied space and the like, does not need to be stopped, can realize descaling and cleaning at the same time, enables the system to be continuously operated, and saves the time cost of stoppage and maintenance. The system not only improves the water saving rate of circulating water, but also reduces the discharge of industrial polluted water, and is crucial for promoting the development of industrial circular economy and green low-carbon transformation construction.

[0044] In summary, the design focus of the utility model is that the scraper 35 slowly scrapes off the dirt on the electrode plate from top to bottom, and the dirt slowly falls into the sludge hopper 41. This design does not disturb the dirt, which is conducive to the rapid sedimentation of the dirt in the sludge hopper 41. The dirt falls into the sludge hopper 41 for collection, and then the sludge discharge device 42 discharges the dirt by forced discharge, so that the sludge discharge is more thorough and clean.

[0045] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the utility model. Any modification, equivalent change and modification of the above embodiment, which does not depart from the technical solution of the utility model, is still within the scope of the technical solution of the utility model.

Claims

1. An integrated full automatic electrochemical descaling system, characterized in that: The box is provided with a water inlet and a water outlet; The water inlet and outlet unit comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the water inlet, and the water outlet pipe is connected with the water outlet; The electrochemical decontamination unit is arranged in the box, and comprises a power supply device and electrode plates connected with the power supply device; The electrode regeneration unit comprises a driving device and a scraper, the scraper is connected with the driving device, and the driving device drives the scraper to remove dirt on the electrode plates; The sludge discharge unit is arranged at the bottom of the box, and comprises a sludge discharge hopper and a sludge discharge device arranged in the sludge discharge hopper.

2. The integrated full-automatic electrochemical descaling system according to claim 1, characterized in that: The water inlet is arranged at the upper left side of the box, the water outlet is arranged at the lower right side of the box, the water inlet pipe is provided with a first flow regulating valve, and the water outlet pipe is provided with a second flow regulating valve.

3. The integrated full-automatic electrochemical descaling system according to claim 1, characterized in that: The electrode plates comprise anode plates and cathode plates, the anode plates and the cathode plates are arranged alternately, and an ion film is arranged in the gap between the anode plates and the cathode plates.

4. The integrated full-automatic electrochemical descaling system according to claim 3, characterized in that: The anode plates and the cathode plates are in a hollow structure, and water flow can flow through the hollow parts of the anode plates and the cathode plates.

5. The integrated full-automatic electrochemical descaling system according to claim 3, characterized in that: There is one more anode plate than cathode plate, and the outermost arrangement is a cathode plate.

6. The integrated full-automatic electrochemical descaling system according to claim 3, characterized in that: The front and back surfaces of the cathode plate are provided with scrapers.

7. An integrated full-automatic electrochemical descaling system according to any one of claims 3-6, characterized in that: The anode plates are titanium electrode plates or ruthenium electrode plates, and the cathode plates are stainless steel electrode plates or aluminum electrode plates.

8. The integrated full-automatic electrochemical descaling system according to claim 1, characterized in that: The width of the scraper is greater than the width of the electrode plate, and the distance between the scraper and the cathode plate is less than 1 mm.

9. The integrated full-automatic electrochemical descaling system according to claim 1, characterized in that: The driving device comprises a first motor, a gearbox, and a guide rail, the guide rail is arranged in the box, the output end of the motor is connected with the input end of the gearbox, the output end of the gearbox is provided with a first sprocket, the scraper is arranged on a scraper holder, the scraper holder is provided with a second sprocket, a chain is arranged between the first sprocket and the second sprocket, and the scraper holder moves up and down on the guide rail.

10. The integrated full-automatic electrochemical descaling system according to claim 1, characterized in that: The sludge discharge device comprises a sewage valve, a second motor, and a screw rod connected with the output end of the second motor, the sewage valve is arranged in the sludge discharge hopper, and the screw rod transports the sludge to the sewage valve.

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