Dynamic descaling scraper for lifting cathode plate and descaling equipment

Abstract

The utility model discloses a scraper for lifting dynamic descaling of a negative plate, which belongs to the technical field of descaling of the negative plate and particularly comprises a scale scraping knife, the scale scraping knife comprises a main knife body and two supports for mounting the main knife body on descaling equipment, and the two supports are respectively mounted at two ends of the main knife body through bolts; the main cutter body comprises a horizontal part, side wings are integrally formed on the two sides of the horizontal part, and scraping heads are arranged on the sides, away from the horizontal part, of the two side wings. The contact area with scale can be increased, meanwhile, the distance between the cathode plate and the anode plate can be further reduced, the effect of electrochemically removing calcium and magnesium ions can be effectively improved, meanwhile, the energy consumption of descaling equipment can be effectively reduced, the operation cost is reduced, scale scraping treatment on the cathode plate by a scraping head is facilitated, and the service life of the cathode plate is prolonged. The water scale on the cathode plate can be cleared more thoroughly, and hard water scale is effectively prevented from remaining on the cathode plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of cathode plate descaling, and in particular relates to a scraper and descaling equipment for cathode plate lifting dynamic descaling. Background Art

[0002] Electrochemical descaling technology is a new, environmentally friendly process with advantages such as requiring no chemical agents, being green and pollution-free, easy to adjust, having a simple process structure, and being automated. During the electrochemical descaling process, water decomposes near the anode to produce oxygen and an acidic environment, while hydrogen and an alkaline environment are generated near the cathode. In this alkaline environment, hardness ions such as calcium and magnesium react with carbonate ions to form water-insoluble calcium carbonate and magnesium carbonate. Simultaneously, hydroxide ions generated by the electrolysis of water combine with magnesium ions in the water to form magnesium hydroxide. This precipitate is adsorbed on the cathode plate, thereby removing calcium and magnesium ions (hardness) from the water. Once the calcium carbonate and magnesium hydroxide deposits on the cathode plate reach a certain thickness, they are automatically cleaned regularly by a scraping system.

[0003] The effect of electrochemical removal of calcium and magnesium ions is closely related to the distance between the plates. In existing automated electrochemical descaling equipment, the mechanical scraping structure mostly adopts a horizontal scraper design, which leads to a large distance between the cathode plate and the anode plate, resulting in increased ion transmission resistance and weakened driving force of electrosorption (i.e. electrostatic force), which seriously affects the removal effect of calcium and magnesium ions. At the same time, the distance between the plates is large. While maintaining the same plate current density, the DC power supply voltage will increase. The greater the power required, the greater the operating cost. At the same time, the horizontal scraper design has insufficient deformation resistance during the cathode plate descaling process, and it is easy to leave residue when encountering hard scale.

[0004] To this end, we propose a scraper and descaling equipment for dynamic descaling of cathode plates by lifting. Utility Model Content

[0005] The purpose of the utility model is to provide a scraper and descaling equipment for dynamic descaling of cathode plates, so as to solve the above problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A scraper for dynamic descaling by lifting cathode plates comprises a scraper, and the scraper as a whole comprises a main blade body and two brackets, the two brackets are respectively mounted on both ends of the main blade body by bolts, so as to mount the main blade body to the top of the water tank in the following descaling equipment; in order to reduce the distance between the cathode plate and the anode plate as much as possible, the entire main blade body changes the traditional horizontal structure design, specifically, the main blade body comprises a horizontal part, both sides of the horizontal part are integrally formed with side wings, and the two side wings are provided with a scraping head on the side away from the horizontal part, and the side wings are arranged at an upward tilt angle on the side of the horizontal part The scraper head and the side wings are integrally formed, and the scraper head is designed to be tilted downward, and the entire main blade body is designed to be an "M"-shaped structure. On the one hand, its anti-deformation ability is enhanced, which is beneficial for the scraper head to perform scale scraping on the cathode plate, so that the scale can be cleaned more cleanly and hard scale can be effectively prevented from remaining on the cathode plate. On the other hand, it can increase the contact area between the scraper and the scale while further reducing the distance between the cathode plate and the anode plate, which can not only effectively improve the effect of electrochemical removal of calcium and magnesium ions, but also effectively reduce the energy consumption of the descaling equipment and reduce operating costs.

[0008] Furthermore, the angle C formed between the side wing and the horizontal portion is 30-45 degrees.

[0009] Furthermore, the angle B formed between the scraping head and the side wings is 90-120 degrees.

[0010] Furthermore, the edges and corners on the side of the scraper head close to the cathode plate are chamfered to facilitate a larger contact area between the front end of the scraper head and the cathode plate. The angle A formed between the scraper head and the horizontal plane is 30-45 degrees, wherein the chamfer angle of the edges and corners at the front end of the scraper head is set accordingly according to the angle of the angle A to ensure that the guide surface at the front end of the scraper head remains parallel and in contact with the cathode plate.

[0011] Furthermore, in order to extend the service life of the entire scraper, the main blade body of the scraper is entirely made of stainless steel.

[0012] A cathode plate lifting dynamic descaling device includes the above-mentioned cathode plate lifting dynamic descaling scraper, which has several groups; it also includes a square water tank with an open upper end, which is an electrochemical reaction tank, and the lower end of the water tank is a conical box, which is communicated with the water tank, and a fixed frame is installed at the bottom of the water tank to support the entire device, and the bottom of the conical box is a scale discharge outlet, wherein the water tank and the conical box are both made of carbon steel, and a valve is installed inside the scale discharge outlet, wherein a scale dehydration device (not shown) can be installed below the scale discharge outlet, and a drain outlet is provided on the side of the conical box, and a water pump is connected to the drain outlet. Before the cathode plate is scraped, the water in the box is discharged into the circulating water pool through the water pump.

[0013] Furthermore, a water inlet and a water outlet are respectively provided on both sides of the water tank, and a group of screw lifting devices are installed on each side of the water tank. The two groups of screw lifting devices adopt a synchronous drive design, and the two groups of screw lifting devices are symmetrically installed with the central axis of the water tank as the center. A fixed rod is installed between the two groups of screw lifting devices, and the fixed rod is horizontally mounted on the top of the water tank. The two groups of screw lifting devices act synchronously to drive the fixed rod to move up and down above the water tank. Cathode plates are fixed side by side at equal distances at the bottom of the fixed rod. An anode plate is installed in the middle of the gap between adjacent cathode plates in the middle of the inner side of the water tank. The top of the cathode plate is higher than the water tank. The anode plate is completely immersed in water after the water tank is filled with water. The area of ​​the cathode plate is larger than the anode plate, and the two sides of the anode plate are fixed on the inner walls of the water tank. The two sides of the cathode plate slide against the inner wall of the water tank so that the cathode plate can be lifted and lowered under the pull of the fixed rod.

[0014] Furthermore, a set of cathode plate lifting dynamic descaling scrapers is installed above each anode plate and at the top of the water tank. The scrapers are installed to the top of the water tank in the descaling equipment through the bracket and screws and are higher than the water tank. On the one hand, this prevents the scrapers from coming into contact with water and causing rust, and is easy to replace and maintain; on the other hand, it is conducive to the cleaning and maintenance of the scrapers.

[0015] Furthermore, the screw lifting device includes a mounting frame fixed on the water tank, a positioning slide rail is vertically fixed on the top of the mounting frame, a servo motor is installed on the bottom of the mounting frame, the output shaft of the servo motor is installed with a driving screw through a coupling, both ends of the driving screw are installed at both ends of the positioning slide rails through seat bearings, and a screw slider is slidably installed on the positioning slide rail to cooperate with the driving screw to form a screw transmission structure, and a bracket for installing a fixing rod is fixed on the screw sliders on the two sets of screw lifting devices.

[0016] Beneficial effects:

[0017] The utility model is symmetrically designed with the side wings and the scraping head with the horizontal part as the center, so that the entire scraper has an "M" shape structure. Compared with the traditional horizontal scraper design, the "M" shaped scraper can increase the contact area with the scale and further reduce the distance between the cathode plate and the anode plate. It can not only effectively improve the effect of electrochemical removal of calcium and magnesium ions, but also effectively reduce the energy consumption of the descaling equipment and reduce operating costs. The scraper with this structural design has stronger deformation resistance during the process of cathode plate lifting and scraping in the descaling equipment, which is more conducive to the scraping head to perform scraping treatment on the cathode plate, so that the scale on the cathode plate can be cleaned more cleanly and hard scale can be effectively prevented from remaining on the cathode plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the scraper structure for dynamic descaling of the cathode plate in this utility model Figure 1 ;

[0019] Figure 2 Schematic diagram of the scraper structure for dynamic descaling of the cathode plate in this utility model Figure 2 ;

[0020] Figure 3 This is a structural diagram of the cathode plate lifting dynamic descaling equipment of the utility model;

[0021] Figure 4 This is a schematic diagram of the half-section structure of the cathode plate lifting dynamic descaling equipment of the present invention.

[0022] In the figure: 1. scraper; 101. horizontal part; 102. side wings; 103. scraper head; 104. bolt; 105. bracket; 2. water tank; 3. fixing frame; 4. tapered box; 5. drain outlet; 6. valve; 7. water inlet; 8. water outlet; 9. screw lifting device; 901. mounting frame; 902. positioning slide rail; 903. driving screw; 904. servo motor; 905. screw slider; 906. bracket; 10. fixing rod; 11. cathode plate; 12. anode plate. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0024] Example

[0025] In view of the problem that the mechanical scraping structure of existing automated electrochemical descaling equipment mostly adopts a horizontal scraper design, resulting in a large distance between the cathode plate and the anode plate, resulting in poor removal of calcium and magnesium ions in the water and high equipment operating costs, we propose a scraper and descaling equipment for dynamic descaling by lifting the cathode plate, the details of which are as follows:

[0026] like Figure 1-2As shown, the present embodiment provides a cathode plate lifting dynamic descaling scraper, comprising a scraper 1, the scraper 1 as a whole comprising a main blade body and two brackets 105, the two brackets 105 are respectively mounted on both ends of the main blade body by bolts 104, so as to mount the main blade body to the top of the water tank 2 in the following descaling equipment; in order to reduce the distance between the cathode plate 11 and the anode plate 12 as much as possible, the entire main blade body changes the traditional horizontal structure design, specifically, the main blade body comprises a horizontal portion 101, both sides of the horizontal portion 101 are integrally formed with side wings 102, the two side wings 102 are away from the horizontal portion 101 on a side provided with a scraping head 103, the side wings 102 are on the horizontal portion 10 The side of the scraper 103 is designed with an upward tilt angle, and the scraper head 103 and the side wing 102 are integrally formed, and the scraper head 103 is designed with a downward tilt angle. The entire main blade body is designed to be an "M"-shaped structure. On the one hand, its anti-deformation ability is enhanced, which is conducive to the scraper head 103 to perform a scale scraping treatment on the cathode plate 11, so that the scale can be cleaned more cleanly and hard scale can be effectively prevented from remaining on the cathode plate 11. On the other hand, while increasing the contact area between the scraper and the scale, it can also further reduce the distance between the cathode plate 11 and the anode plate 12, which can not only effectively improve the effect of electrochemical removal of calcium and magnesium ions, but also effectively reduce the energy consumption of the descaling equipment and reduce the operating cost.

[0027] like Figure 2 As shown, the angle C formed between the side wing 102 and the horizontal portion 101 is 30-45 degrees.

[0028] like Figure 2 As shown, the included angle B formed between the scraping head 103 and the side wing 102 is 90-120 degrees.

[0029] like Figure 2 As shown, the edges and corners on the side of the scraper head 103 close to the cathode plate 11 are chamfered to facilitate a larger contact area between the front end of the scraper head 103 and the cathode plate 11. The angle A formed between the scraper head 103 and the horizontal plane is 30-45 degrees. It should be noted that the chamfer angle of the edges and corners at the front end of the scraper head 103 is set accordingly according to the angle of the angle A to ensure that the guide surface at the front end of the scraper head 103 remains parallel and in contact with the cathode plate 11.

[0030] In order to extend the service life of the entire scraper blade 1 , the main blade body of the scraper blade 1 is entirely made of stainless steel.

[0031] like Figure 3-4 As shown, this embodiment provides a cathode plate lifting dynamic descaling device, including the above-mentioned cathode plate lifting dynamic descaling scraper, and the scraper has several groups;

[0032] The cathode plate lifting dynamic descaling equipment also includes a square water tank 2 with an open upper end. The water tank 2 is an electrochemical reaction tank. The lower end of the water tank 2 is a conical box 4. The conical box 4 is connected to the water tank 2. A fixing frame 3 is also installed at the bottom of the water tank 2 to support the entire equipment. The bottom of the conical box 4 is a scale discharge outlet. The water tank 2 and the conical box 4 are both made of carbon steel, and a valve 6 is installed inside the scale discharge outlet. A scale dehydration device (not shown) can be installed below the scale discharge outlet. A drain outlet 5 is provided on the side of the conical box 4. The drain outlet 5 is connected to a water pump. Before the cathode plate 11 scrapes the scale, the water in the box is discharged into the circulating water pool through the water pump.

[0033] like Figure 3-4 As shown, a water inlet 7 and a water outlet 8 are provided on both sides of the water tank 2, and a set of screw lifting devices 9 are installed on each side of the water tank 2. The two sets of screw lifting devices 9 adopt a synchronous drive design, and the two sets of screw lifting devices 9 are symmetrically installed with the central axis of the water tank 2 as the center. A fixed rod 10 is installed between the two sets of screw lifting devices 9. The fixed rod 10 is horizontally mounted on the top of the water tank 2. The two sets of screw lifting devices 9 act synchronously to drive the fixed rod 10 to move up and down above the water tank 2. The cathode plates 11 are fixed side by side and equidistantly at the bottom of the fixed rod 10. The middle part of the inner side of the water tank 2 An anode plate 12 is installed in the middle of the gap between adjacent cathode plates 11. The top of the cathode plate 11 is higher than the water tank 2. The anode plate 12 is completely immersed in water after the water tank 2 is filled with water. It should be noted that the area of ​​the cathode plate 11 is larger than the anode plate 12, and the two sides of the anode plate 12 are fixed on the inner walls of the water tank 2. The two sides of the cathode plate 11 slide against the inner walls of the water tank 2 to facilitate the lifting and lowering of the cathode plate 11 under the support of the fixed rod 10. The distance between the cathode plate 11 and the anode plate 12 can be reduced to 50-100mm without affecting the scraping.

[0034] like Figure 3-4 As shown, a set of cathode plate lifting dynamic descaling scrapers are installed above each anode plate 12 and at the top of the water tank 2. The scraper 1 is installed to the top of the water tank 2 in the descaling equipment through the bracket 105 with screws and is higher than the water tank 2. On the one hand, it prevents the scraper from contacting with water and causing rust, and is easy to replace and maintain; on the other hand, it is conducive to the cleaning and maintenance of the scraper 1.

[0035] like Figure 4As shown, the screw lifting device 9 includes a mounting frame 901 fixed on the water tank 2, a positioning slide 902 is vertically fixed on the top of the mounting frame 901, a servo motor 904 is installed at the bottom of the mounting frame 901, and the output shaft of the servo motor 904 is installed with a driving screw 903 through a coupling. The two ends of the driving screw 903 are installed at the two ends of the positioning slide 902 through seat bearings, and a screw slider 905 that cooperates with the driving screw 903 to form a screw transmission structure is slidably installed on the positioning slide 902. A bracket 906 for mounting the fixed rod 10 is fixed on the screw sliders 905 on the two sets of screw lifting devices 9. When scraping dirt, the two sets of screw lifting devices Device 9 is started, the servo motor 904 drives the driving screw 903 to rotate and cooperates with the positioning slide rail 902 to drive the screw slider 905 to rise, thereby driving the fixed rod 10 to lift the cathode plate 11 out of the water tank 2. During the rising process of the cathode plate 11, the scraping heads 103 on both sides of the scraper 1 scrape the scale on the cathode plate 11, and the scraped scale falls into the conical box 4 and is finally discharged from the scale discharge port and falls into the dehydration equipment placed below for dehydration. When the cathode plate 11 completes all scraping and cleaning, the screw lifting device 9 drives the driving screw 903 to reverse, so that the screw slider 905 is reset, thereby causing the fixed rod 10 to fall, driving the cathode plate 11 to reset.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A scraper for dynamic descaling of cathode plates, characterized in that: The scraper (1) comprises a main blade body and a bracket (105) for mounting the main blade body on a descaling device, wherein there are two brackets (105), and both brackets (105) are mounted on two ends of the main blade body via bolts (104); The main blade body comprises a horizontal portion (101), and side wings (102) are integrally formed on both sides of the horizontal portion (101), and a scraping head (103) is provided on the side of the two side wings (102) away from the horizontal portion (101).

2. The cathode plate lifting dynamic descaling scraper according to claim 1, characterized in that: The side wings (102) are designed to be tilted upward at the sides of the horizontal portion (101), and the included angle C formed between the side wings (102) and the horizontal portion (101) is 30-45 degrees.

3. The cathode plate lifting dynamic descaling scraper according to claim 1, characterized in that: The scraping head (103) and the side wings (102) are integrally formed, and the scraping head (103) is designed to be tilted downward, and the angle B formed between the scraping head (103) and the side wings (102) is 90-120 degrees.

4. The cathode plate lifting dynamic descaling scraper according to claim 3, characterized in that: The corners of the scraper head (103) on the side close to the cathode plate (11) are chamfered to provide a larger contact area between the front end of the scraper head (103) and the cathode plate (11). The angle A formed between the scraper head (103) and the horizontal plane is 30-45 degrees.

5. The scraper for dynamic descaling of cathode plates according to claim 1, characterized in that: The main blade body of the scraper (1) is entirely made of stainless steel.

6. A cathode plate lifting dynamic descaling device, characterized in that: The invention comprises the scraper for dynamic descaling of cathode plates according to any one of claims 1 to 5.

7. The cathode plate lifting dynamic descaling device according to claim 6, characterized in that: The utility model also comprises a square water tank (2) with an open upper end, the lower end of the water tank (2) being a conical box (4), and a fixing frame (3) being installed at the bottom of the water tank (2), the conical box (4) being in communication with the water tank (2), the bottom of the conical box (4) being a scale discharge outlet, and a valve (6) being installed inside the scale discharge outlet, the side of the conical box (4) being provided with a drain outlet (5), and the drain outlet (5) being connected to a water pump.

8. The cathode plate lifting dynamic descaling device according to claim 7, characterized in that: The water tank (2) is provided with a water inlet (7) and a water outlet (8) on both sides, and a set of screw lifting devices (9) are installed on each side of the water tank (2). The two sets of screw lifting devices (9) adopt a synchronous drive design, and the two sets of screw lifting devices (9) are symmetrically installed with the central axis of the water tank (2) as the center. A fixing rod (10) is installed between the two sets of screw lifting devices (9). Cathode plates (11) are fixed side by side at equal distances at the bottom of the fixing rod (10). An anode plate (12) is installed in the middle of the gap between adjacent cathode plates (11) on the inner side of the water tank (2). The top of the cathode plate (11) is higher than the water tank (2). The anode plate (12) is completely immersed in water after the water tank (2) is filled with water.

9. The cathode plate lifting dynamic descaling device according to claim 8, characterized in that: A set of cathode plate lifting and dynamic descaling scrapers is installed above each anode plate (12) and at the top of the water tank (2).

10. The cathode plate lifting dynamic descaling device according to claim 8, characterized in that: The screw lifting device (9) includes a mounting frame (901) fixed on the water tank (2), a positioning slide rail (902) vertically fixed on the top of the mounting frame (901), a servo motor (904) installed on the bottom of the mounting frame (901), an output shaft of the servo motor (904) is installed with a driving screw (903) through a coupling, and both ends of the driving screw (903) are installed on both ends of the positioning slide rail (902) through seat bearings, and a screw slider (905) cooperating with the driving screw (903) to form a screw transmission structure is slidably installed on the positioning slide rail (902), and a bracket (906) for installing a fixed rod (10) is fixed on the screw sliders (905) on the two sets of screw lifting devices (9).

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