Electrochemical box body with medium uniform-speed flowing function

Abstract

The invention discloses an electrochemical box with a medium uniform-speed flowing function. The electrochemical box comprises a box body, a plurality of electrode plates are arranged in the box body, a circulating liquid inlet is formed in the bottom of the box body, a horizontally-arranged intercepting plate is arranged in the box body, all the electrode plates are located above the intercepting plate, and the lower portions of all the electrode plates make contact with the intercepting plate; a plurality of flow speed control assemblies arranged side by side in the X direction are arranged on the interception plate, and each flow speed control assembly is located between any two adjacent electrode plates; each flow speed control assembly comprises a plurality of medium through holes which are formed in the intercepting plate and distributed in the Y direction, the flow of the medium through holes is the same, and the sum of the flow of all the medium through holes is equal to the flow of the circulating liquid inlet. The medium between the two electrode plates is blocked through the flow velocity control assembly, suction force of the circulating liquid inlet is equally divided, it is ensured that liquid between the electrode plates passes through the same flow, the treatment process can be stabilized, and the treatment efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemical sewage treatment, and particularly to an electrochemical box body with a function of uniform medium flow. Background Art

[0002] The electrochemical sewage treatment technology is a method for treating sewage by using electrochemical reactions. Its principle is to achieve the purpose of sewage treatment through the oxidation, reduction, flotation, flocculation and other effects generated during the electrolysis of sewage.

[0003] As Figure 6 shown, it is an existing sewage electrochemical treatment device, which mainly includes a box body 100. Inside the box body 100, multiple electrode plates 400 are arranged side by side and at intervals. The multiple electrode plates 400 are structured with an alternating arrangement of anode plates and cathode plates. The box body 100 is provided with a return pipe 200. When the device operates, each electrode plate 400 is electrified, and under the action of a water pump 210, the return pipe 200 circulates the sewage in a bottom-in and top-out manner repeatedly inside the box body 100 to achieve the electrolytic treatment of the sewage.

[0004] The liquid inlet 120 of the return pipe is located at the middle position of the bottom of the box body 100, and the pipe orifice of the return pipe is much smaller than the bottom area of the box body. Moreover, each electrode plate is arranged horizontally side by side, which results in different suction forces of the liquid inlet of the return pipe for the liquid between each pair of cooperating electrode plates. There is a situation where the flow rates of the medium between each pair of cooperating electrolytic plates are very different and seriously uneven, resulting in the untreated water bodies in different electrode gaps inside the electrolytic box not being treated with equal time and equal intensity. This problem can only be overcome by extending the treatment time. For this reason, the existing electrochemical treatment generally requires 50 - 120 minutes, which is unacceptable in engineering. Therefore, the current treatment equipment generally has the problems of low electrochemical reaction efficiency and slow treatment process. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the present invention provides an electrochemical box body with a function of uniform medium flow, which solves the problem of low treatment efficiency existing in the existing electrochemical sewage treatment equipment.

[0006] To achieve the above object, the present invention adopts the following technical solution: An electrochemical box body with a function of uniform medium flow includes a box body. Inside the box body, multiple electrode plates are vertically arranged and spaced along the X direction. At the bottom of the box body, there is a circulating liquid inlet. Inside the box body, there is a horizontally arranged intercepting plate, and the peripheral side of the intercepting plate is sealingly connected to the inner wall of the box body; Each electrode plate is located above the intercepting plate, and the lower part of each electrode plate is in contact with the intercepting plate; On the intercepting plate, multiple flow rate control components are arranged side by side along the X direction, and each flow rate control component is respectively located between any two adjacent electrode plates; Each flow rate control component includes a plurality of medium through-holes formed in the intercepting plate and distributed along the Y direction. The flow rates of the respective medium through-holes are the same, and the sum of the flow rates of all the medium through-holes is equal to the flow rate of the circulating liquid inlet.

[0007] Principle of the present invention: According to common general knowledge, for the electrode plates closer to the circulating liquid inlet, that is, the liquid between the electrode plates directly above the circulating liquid inlet has a greater suction force, so the fluid velocity at this position is faster. The suction force of the fluid far from this position in the horizontal direction is smaller, and the corresponding flow velocity is lower. Therefore, there is a large difference in the flow velocity between any two adjacent electrode plates.

[0008] In the present invention, a flow rate control component is provided between any two electrode plates used in combination. Each flow rate control component has a plurality of medium through-holes with the same quantity. The fluid between the two electrode plates used in combination needs to pass through the intercepting plate along each medium through-hole and finally enter the circulating liquid inlet. Considering that the flow rates of the respective medium through-holes are the same, it can be ensured that the flow velocities between any two electrode plates used in combination are equal, and the sum of the flow rates of all the medium through-holes is equal to the flow rate of the circulating liquid inlet. This is equivalent to distributing the flow rate of the entire circulating liquid inlet to between any two electrode plates used in combination. And the areas between any two electrode plates used in combination are the same (at this time, the multiple medium through-holes between them cannot be used as the flow-through area, and the medium through-holes are used for blocking the flow). In the case of equal area and flow rate, according to the flow rate formula Q = A * V, it is possible to achieve a substantially equal-speed flow of the liquid among a large number of parallel electrode plates, which can not only stabilize the treatment process but also improve the treatment efficiency.

[0009] Compared with the prior art, the present invention has the following beneficial effects: Based on the existing box body, the present invention provides an intercepting plate. By using the installation positions of the intercepting plate and each electrode plate, the medium between any two electrode plates used in combination is blocked by the flow rate control component, and the suction force of the circulating liquid inlet is "averaged". The liquid in each electrode plate gap is processed for the same time and with the same intensity, that is, the identity and stability of the liquid treatment everywhere in the box body are ensured as much as possible. Only in this way can the high efficiency and reliability of the electrochemical reaction be guaranteed, the time of the prior art be greatly shortened, the stability and reliability of the treatment be ensured, and the box body of the present invention has better and more practical engineering value.

[0010] Furthermore, the centers of the multiple medium through-holes on the intercepting plate are distributed in a rectangular array.

[0011] Furthermore, the center distances between any two adjacent medium through-holes along the X direction and along the Y direction are the same.

[0012] Furthermore, taking the center of the circulating liquid inlet as the origin of coordinates, or the center of the circulating liquid inlet is located on the Z axis of the coordinates; The areas of the respective dielectric vias distributed along the Y direction increase successively in the direction away from the X axis. The areas of the respective dielectric vias distributed along the X direction increase successively in the direction away from the Y axis.

[0013] Furthermore, the centers of any dielectric via and the center of the circulating liquid inlet are collinearly arranged in the vertical direction. This dielectric via is the central hole, and the hole area of the central hole is , and the hole area of the central hole , where n is the number of dielectric vias opened on the intercepting plate, and S is the area of the circulating liquid inlet.

[0014] It should be explained that since the installation position of the circulating liquid inlet at the bottom of the entire box can be set according to requirements, that is, the circulating liquid inlet can be located at the exact center of the bottom of the box or at the edge position of the bottom of the box. However, no matter where the circulating liquid inlet is set at the bottom of the box, a corresponding dielectric via needs to be opened on the intercepting plate according to the installation position of the circulating liquid inlet to ensure that the center line of this dielectric via and the center line of the circulating liquid inlet are collinear, making this dielectric via the central hole. Therefore, it can be understood that the position of the central hole is variably set according to the different installation positions of the circulating liquid inlet on the box. Thus, theoretically, the center line of any dielectric via may be collinear with the center line of the circulating liquid inlet and be selected as the central hole. Therefore, the above content is expressed as that if the center line of any dielectric via is collinear with the center line of the circulating liquid inlet, then this dielectric via is the central hole.

[0015] In a possible implementation manner, the distance between the center of the central hole and the center of the circulating liquid inlet is , then the hole area of any other dielectric via satisfies the following formula: .

[0016] It should be explained that taking the center of the central hole as the origin of coordinates, the coordinates of the center of any other dielectric via are ( , , 0), and the coordinates of the center of the circulating liquid inlet are (0, 0, z), then .

[0017] Furthermore, a guiding trough with a reduced opening is provided at the lower part of the box, and the circulating liquid inlet is located in the middle of the bottom of the guiding trough and communicates with the box.

[0018] Furthermore, a circulating liquid outlet is provided at the upper part of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 This is a top view of the cooperation between the interception plate and each electrode plate of the present invention; Figure 3 This is a structural top view of the interception plate of the present invention; Figure 4 This is a structural schematic diagram of the connection between the interception plate and the box body of the present invention; Figure 5 This is a position relationship diagram of each medium through hole and the circulating liquid inlet of the present invention; Figure 6 This is a structural diagram of a sewage electrochemical treatment device in the prior art; Figure 7 This is a specific dimension diagram of an interception plate of the present invention; Figure 8 This is a bar chart comparing the results of two groups of experiments in the effect verification of the present invention; Figure 9 This is a line chart comparing the results of two groups of experiments in the effect verification of the present invention.

[0020] In the figure: box body 100, material guiding groove 110, circulating liquid inlet 120, installation frame 130, groove 131, circulating pipe 200, water pump 210, interception plate 300, flow rate control component 310, medium through hole 311, slot 320, electrode plate 400. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0022] As shown in Figure 1 、 2 、3, an electrochemical box body with a function of uniform medium flow includes a box body 100. A plurality of electrode plates 400 are vertically arranged and spaced along the X direction in the box body 100. A circulating liquid inlet 120 is provided at the bottom of the box body 100. A horizontally arranged interception plate 300 is provided in the box body 100. The periphery of the interception plate 300 is hermetically connected to the inner wall of the box body 100. Each electrode plate is located above the interception plate 300, and the lower part of each electrode plate 400 is in contact with the interception plate 300; a plurality of flow rate control components 310 are arranged side by side along the X direction on the interception plate 300, and each flow rate control component 310 is respectively located between any two adjacent electrode plates 400; each flow rate control component 310 includes a plurality of medium through holes 311 opened on the interception plate 300 and distributed along the Y direction. The flow rates of all the medium through holes 311 are the same, and the total flow rate of all the medium through holes 311 is equal to the flow rate of the circulating liquid inlet 120.

[0023] It can be understood that the box body 100 is the entire electrochemical reaction chamber. Since the electrode plates 400 are in the shape of rectangular plates and are horizontally arranged in the box body 100, for the convenience of installing the electrode plates 400, the box body 100 of the present invention is a rectangular box body 100. Each electrode plate 400 is vertically arranged and is installed near the upper middle part of the box body 100. When an electrochemical reaction occurs in the box body 100, the liquid needs to submerge each electrode plate 400.

[0024] To enable the smooth progress of the electrochemical reaction, a circulation pipe 200 is connected to the box body 100. The liquid inlet of the circulation pipe 200 is located at the bottom of the box body 100, which is the circulating liquid inlet 120. The liquid outlet of the circulation pipe 200 is located at the upper part of the box body 100, which is the circulating liquid outlet. A water pump 210 is connected to the circulation pipe 200. The water pump 210 is used to continuously circulate the liquid in the box body 100 in the way of lower inlet and upper outlet for electrolysis reaction. Since the process of treating sewage in the box body 100 is to first introduce a certain amount of sewage into the box body 100, and through the cooperation of the circulation pipe 200 and each electrode plate 400, the sewage with a fixed volume in the box body 100 is electrically treated. After the treatment is completed, the sewage is discharged from the box body 100, and then the box body 100 is filled with water for treatment. Therefore, the box body 100 also needs to be provided with a liquid inlet pipeline and a liquid discharge pipeline. And the liquid inlet pipeline and the liquid discharge pipeline are both closed during the electrochemical reaction process in the box body 100. Therefore, the liquid inlet pipeline and the liquid discharge pipeline are set according to requirements. To enable all the treated sewage to be discharged outside, the liquid discharge pipeline can be set at the lower part of the box body 100, or the liquid discharge pipeline can be connected to the liquid inlet section of the circulation pipe 200, then the liquid discharge pipeline and the circulation pipe 200 have a liquid inlet.

[0025] Since the area of the circulating liquid inlet 120 is much smaller than the cross-sectional area of the box body 100, and each electrode plate 400 is arranged at intervals in the horizontal direction, it results in a greater suction force on the liquid between the electrode plates 400 directly above the circulating liquid inlet 120. Then the fluid velocity at this position is faster, and the suction force on the fluid far away from this position in the horizontal direction is smaller, and the corresponding flow velocity is lower. Therefore, there is a large difference in the flow velocity between any two adjacent electrode plates 400, and there are serious concentration polarization and passivation phenomena of the electrode plates 400.

[0026] To solve the above problems, those skilled in the art easily come up with the idea of increasing the flow rate of the liquid medium between the electrode plates 400. For example, by using a water pump 210 with a higher power on the circulation pipe 200, the flow rate of the circulating liquid at the liquid inlet 120 can be effectively increased. With the overall flow rate increased, the liquid flow rate between each electrode plate 400 will also increase. Therefore, the concentration polarization phenomenon during the electrochemical reaction can be reduced or eliminated, and the detachment of reaction gases can be accelerated, which can well prevent reaction passivation. However, to maximize the efficiency of the electrolytic plate, it is necessary to limit the flow rate of the fluid passing between each electrode plate 400, that is, when the relative flow rate of the liquid to the electrode plate 400 at a fixed position reaches 5 - 10 cm / s, it is the preferred liquid flow rate. Therefore, blindly increasing the liquid flow rate between each electrode plate 400 will also lead to the problem of reducing the use efficiency of the electrode plate 400.

[0027] In the present invention, in combination with the flow blocking principle, an interception plate 300 is provided inside the box body 100, and the periphery of the interception plate 300 is hermetically connected to the inner wall of the box body 100. By conventional means, the interception plate 300 is set to have the same shape as the cross-section of the box body 100, and the interception plate 300 is embedded in the box body 100 and welded and fixed to the inner wall of the box body 100 to achieve the hermetic connection between the two. Of course, the box body 100 and the interception plate 300 can also be Figure 4 connected in the structure shown. Specifically, an installation frame 130 is provided inside the box body 100, the installation frame 130 is fixed to the inner wall of the box body 100, a groove 131 with a labyrinth structure is provided on the upper surface of the installation frame 130, a sealing layer is provided in the groove 131, and a slot cooperating with the groove 131 is provided below the interception plate 300. The cooperation between the slot and the groove 131 can achieve the hermetic connection between the interception plate 300 and the box body 100, and this method is beneficial to the replacement and maintenance of the interception plate 300.

[0028] The interception plate 300 of the present invention divides the box body 100 into upper and lower chambers. To enable the liquid in the upper chamber to enter the lower chamber, it is necessary to provide a medium channel on the interception plate 300. For this purpose, a plurality of flow rate control components 310 are provided on the interception plate 300, and each flow rate control component 310 is located between two cooperating electrode plates 400 to limit the flow rate of the liquid between the two electrode plates 400.

[0029] Each flow rate control component 310 has the same number of multiple medium through-holes 311. The fluid between two cooperating electrode plates 400 needs to pass through the intercepting plate 300 along each medium through-hole 311 and finally enter the circulating liquid inlet 120. Considering that the flow rates of all medium through-holes 311 are the same, it can ensure that the flow rates between any two cooperating electrode plates 400 are equal, and the total flow rate of all medium through-holes 311 is equal to the flow rate of the circulating liquid inlet 120. This is equivalent to evenly distributing the flow rate of the entire circulating liquid inlet 120 between any two cooperating electrode plates 400. And the area enclosed between any two cooperating electrode plates 400 is the same (at this time, the multiple medium through-holes 311 between them cannot be regarded as the flow area, and the medium through-holes 311 are used for blocking the flow). In the case of equal area and flow rate, according to the flow rate formula Q = A * V, it can achieve the substantially equal-speed flow of the liquid among numerous parallel electrode plates 400, avoiding the problems caused by uneven liquid flow rates between the electrode plates 400.

[0030] Based on the existing box body 100, the present invention provides an intercepting plate 300. By utilizing the installation positions of the intercepting plate 300 and each electrode plate 400, the medium between any two cooperating electrode plates 400 is blocked by the flow rate control component 310, and the suction force of the circulating liquid inlet 120 is "evenly distributed", so as to ensure that the liquid between the electrode plates 400 passes through with the same flow rate, guarantee the flow rate balance between the electrode plates 400, ensure that the electrochemical reaction continuously maintains high-efficiency treatment, and improve the treatment effect of the electrochemical reaction.

[0031] In a possible implementation manner, the centers of the multiple medium through-holes 311 on the intercepting plate 300 are distributed in a rectangular array.

[0032] It can be understood that each medium channel needs to be opened on the intercepting plate 300. To realize the positioning of the medium through-holes 311 on the intercepting plate 300, the centers of the multiple medium through-holes 311 opened on the intercepting plate 300 of the present invention are distributed in a rectangular array. The multiple medium through-holes 311 in each column are the multiple medium through-holes 311 of the flow rate control component 310, and the multiple medium through-holes 311 in each column are arranged along the Y direction.

[0033] When positioning each medium through-hole 311, after determining the center position of any medium through-hole 311, according to a specific distance, the centers of the multiple medium through-holes 311 in each column can be positioned. After the multiple medium through-holes 311 in each column are positioned, the positioning of all the medium through-holes 311 on the intercepting plate 300 can be realized, which is convenient for positioning and drilling each medium through-hole 311.

[0034] In a possible implementation manner, the center distance between any two adjacent medium through-holes 311 along the X direction and the Y direction is the same.

[0035] When the centers of multiple dielectric vias 311 on the intercepting plate 300 are distributed in a rectangular array, the center distances between any two adjacent dielectric vias 311 in each column are equal. At the same time, the center distances between any two adjacent dielectric vias 311 in each row are equal. However, the center distance between two dielectric vias 311 in each column and the center distance between two dielectric vias 311 in each row may be equal or different.

[0036] Since the liquid flow rates between the two cooperating electrode plates 400 are basically equal, based on common sense, it can be known that the areas of the multiple dielectric vias 311 of each flow rate control component 310 must be different. To calculate the areas of the dielectric vias 311 and facilitate the opening of the dielectric vias 311 on the intercepting plate 300, in the present invention, the center distances between any two adjacent dielectric vias 311 along the X direction and the Y direction are the same, that is, the multiple dielectric vias 311 on the intercepting plate 300 are evenly distributed on the intercepting plate 300.

[0037] In a possible implementation manner, taking the center of the circulating liquid inlet 120 as the origin of the coordinate axis, or the circulating liquid inlet 120 is located at the center on the Z axis of the coordinate axis; the areas of the dielectric vias 311 distributed along the Y direction increase successively in the direction away from the X axis, and the areas of the dielectric vias 311 distributed along the X direction increase successively in the direction away from the Y axis.

[0038] It can be understood that the dielectric via 311 directly above the circulating liquid inlet 120 is subject to a greater suction force. The other dielectric vias 311 around this dielectric via 311 are subject to a smaller suction force than the dielectric via 311 in the middle, and the farther the other dielectric vias 311 are from this dielectric via 311, the smaller the suction force. Correspondingly, the greater the suction force, the greater the flow rate, and the flow rate is equal to the product of the flow rate and the hole area. Correspondingly, to make the flow rates of the dielectric vias 311 the same, combined with different suction force magnitudes, it can be determined that the closer the dielectric via 311 is to the position directly above the circulating liquid inlet 120, the smaller the hole area and the greater the resistance. Correspondingly, the flow rates of the dielectric vias 311 can be the same.

[0039] It is known that the greatest suction force exists directly above the circulating liquid inlet 120. To facilitate the description of the area change of each dielectric via 311, in the present invention, the center of the circulating liquid inlet 120 is used as the coordinate origin. Then, the centers of the dielectric vias 311 on the intercepting plate 300 are on a plane above the Z axis. The greater the distance from the center of each dielectric via 311 to the center of the circulating liquid inlet 120, the smaller the suction force, and the corresponding hole area is larger. Described from the X axis and the Y axis, that is, the areas of the dielectric vias 311 distributed along the Y direction increase successively in the direction away from the X axis, and the areas of the dielectric vias 311 distributed along the X direction increase successively in the direction away from the Y axis.

[0040] In a possible implementation, the centers of any of the dielectric vias 311 and the center of the circulating liquid inlet 120 are collinear in the vertical direction. The dielectric via 311 is a central hole, and the hole area of the central hole is , and the hole area of the central hole , where n is the number of dielectric vias 311 formed in the intercepting plate 300, and S is the area of the circulating liquid inlet 120.

[0041] It can be understood that when the circulating liquid inlet 120 is a cross-section of a straight pipe, the flow rate of any cross-section along the length direction of the straight pipe is the same. The position where the central hole is located can be regarded as another cross-section of the straight pipe, and the flow rate on this cross-section is equal to the sum of the flow rates at each position. Then the flow rate is divided into multiple strands, which can be regarded as dividing this cross-section into multiple parts. However, except for the central hole, the other dielectric vias 311 are scattered and separated, and cannot be associated with the area of the circulating liquid inlet 120. Therefore, the present invention defines the hole area of the central hole as , where n is the number of dielectric vias 311 formed in the intercepting plate 300, and S is the area of the circulating liquid inlet 120.

[0042] In a possible implementation, with the center of the central hole as the origin of coordinates, the coordinates of the center of any other dielectric via 311 are ( , , 0), and the coordinates of the center of the circulating liquid inlet 120 are (0, 0, z). Then .

[0043] According to common knowledge, the distances from each dielectric via 311 to the center of the circulating liquid inlet 120 are different, and there are different suction forces. The relationship between the suction force (pressure difference ) and the suction distance conforms to the approximate point source model of fluid mechanics, that is: the suction force is inversely proportional to the square of the distance:

[0044] is the distance from the center of the dielectric via 311 on the intercepting plate 300 to the center of the circulating liquid inlet.

[0045] To position the centers of each dielectric via 311 as accurately as possible, as Figure 5 shown, the present invention takes the center of the central hole as the origin of coordinates, and the center of the corresponding circulating liquid inlet 120 is on the Z-axis. Then the coordinates of the center of any other dielectric via 311 are ( , , 0), and the coordinates of the center of the circulating liquid inlet 120 are (0, 0, z). Then . The distance between the center of the central hole and the center of the circulating liquid inlet 120 After being defined, the distance from the center of the other dielectric vias 311 to the center of the circulating liquid inlet 120 can be calculated. .

[0046] In a possible implementation, the distance between the center of the central hole and the center of the circulating liquid inlet 120 is , then the hole area of any other dielectric via 311 satisfies the following formula: , where: is the distance from the center of any other dielectric via 311 to the center of the circulating liquid inlet 120.

[0047] Given that the flow rates of the dielectric vias 311 are the same and the central hole has been positioned, based on the data of the central hole, it is also necessary to determine the area of the other dielectric vias 311.

[0048] To ensure that the flow rate of each dielectric via 311 is equal, it should satisfy:

[0049] where, —the area of the th hole; —the flow velocity of the th hole; —the flow rate of the i-th hole.

[0050] According to Bernoulli's equation, the relationship between the flow velocity and the pressure difference is:

[0051] where, —the liquid density.

[0052] Therefore, the flow rates of the dielectric vias 311 can be obtained as:

[0053] At the same time, to keep the flow rate of the dielectric via 311 constant, it must be:

[0054] That is:

[0055] Since , so it is obtained:

[0056] Therefore, the area of any dielectric via 311 should be proportional to the distance from it to the center of the circulating liquid inlet 120 :

[0057] Among them, is a proportional constant.

[0058] Combined with the distance according to the area of the central hole distance

[0059] Obtain:

[0060] Therefore, the constant is obtained:

[0061] Substitute into other area formulas to calculate the area of any dielectric through-hole 311 area: .

[0062] In a possible implementation, a material guiding groove 110 with a reduced opening is provided at the lower part of the box body 100, and the circulating liquid inlet 120 is located in the middle of the bottom of the material guiding groove 110 and communicates with the box body 100.

[0063] Combined with the position of the circulating liquid inlet 120 at the bottom of the box body 100, there are various arrangement ways for each dielectric through-hole 311 on the intercepting plate 300. For example, when the circulating liquid inlet 120 is respectively close to the left and right ends or the front and rear ends of the bottom of the box body 100, the arrangement ways of the multiple dielectric through-holes 311 on the intercepting plate 300 are all different. As Figure 1 shown, in order to reduce the opening difficulty of the present invention, a material guiding groove 110 structure similar to a quadrangular pyramid is provided at the lower part of the box body 100, and the bottom of the material guiding groove 110 is its middle part, which is also the position of the circulating liquid inlet 120 in the embodiment of the present invention. Then, each dielectric through-hole 311 provided on the intercepting plate 300 can be symmetrically arranged with respect to the X-axis where the central hole is located. At the same time, each dielectric through-hole 311 is also symmetrically arranged with respect to the Y-axis where the central hole is located. When calculating the area of each dielectric through-hole 311, it is only necessary to calculate the area of each dielectric through-hole 311 in any one of the four plates separated by the X-axis and the Y-axis in the coordinate axis, and the area of other dielectric through-holes 311 can obtain the corresponding hole area data by using the symmetric layout method.

[0064] Effect verification: In the box body 100, two structures with and without the intercepting plate 300 are adopted to verify the electrochemical treatment efficiency. The specific process is as follows: 1. Calculation of the opening data of the intercepting plate There is an existing square interception plate with a size of 350mm×350mm, on which 25 holes are evenly distributed. The centers of the holes are arranged in a matrix column, and the center distance of the holes is 70mm. There is a circular suction pipe with a cross-sectional area of 10000mm 2 below the interception plate. The center of the circle coincides with the center of the square interception plate and is located 80mm below the interception plate.

[0065] According to the calculation formula in the patent specification ,

[0066] it can be known that the area of the central hole of the interception plate is 400mm 2 , and the radius is 11.29mm. According to the relevant description in the patent document, it is only necessary to calculate the area of the holes in any one of the four plates separated by the X-axis and Y-axis in the coordinate axis, and the corresponding data of the areas of other holes can be obtained by using the symmetric layout method.

[0067] Then calculate the areas of the holes in the same plate, denoted as A2, A3, A4, A5, A6, A7, A8, A9 It is known that the area of the central hole is 400mm 2 , and the center distance of the holes is 70mm, then A1 = 400mm 2 , A2 = 531.15mm 2 , A3 = 806.23mm 2 , A4 = 531.51mm 2 , A5 = 636.40mm 2 , A6 = 878.92mm 2 , A7 = 806.23mm 2 A8 = 878.92mm 2 A9 = 1067.71mm 2 Then the size and hole opening situation of the interception plate are as Figure 7 shown. There are a total of 25 holes, and the opening area is 19598.71mm 2 .

[0068] 2. Design of the box structure According to the size of the interception plate, the size of the box body is designed to be 350mm×350mm×350mm. The interception plate is located in the lower part of the box body and is vertically connected to the four walls of the box body. A total of 6 electrode plates are provided, and the box body space is vertically divided into 5 parts, and two of the electrode plates are attached to the two side walls of the box body. The size of each electrode plate is 350mm×350mm×6mm, and the lower part of the electrode plate is in contact with the interception plate. The space between any two electrode plates contains a row of openings on the interception plate. A conical liquid collecting tank is provided below the box body, and the outlet of the liquid collecting tank is a circular suction pipe, and the center of the pipe coincides with the center of the interception plate, with a distance of 80mm. The suction pipe is connected with a circulating water pump, and it is necessary to ensure that the medium to be treated in the box body circulates at a speed of 5 times / min. The circulating water pump is connected to the pipeline and accesses the upper part of the box body to achieve circulating treatment.

[0069] 3. Experimental Design and Implementation (1)Variable Control Fixed parameters of electrochemical reaction:

[0070] Group Design and Variable Data:

[0071] (2)Detection Method COD: Potassium dichromate method (HJ 828-2017); (3)Data Recording and Sorting 1)Original Data Record Table

[0072] 2)Data Processing Table (Mean ± Standard Deviation)

[0073] 3)Visual Comparison Chart As Figure 8 shown are the bar charts of the comparison of the time required for different electrolytic cells to treat sewage under the same standard for two groups of experiments, A1 and A2; As Figure 9 shown are the line charts of the comparison of the sewage treatment efficiency of different electrolytic cells under the same standard for two groups of experiments, A1 and A2.

[0074] 4. Comparative Analysis and Discussion It can be seen from the data obtained from the above experiments that: under the same treatment standard (COD = 50mg / L), the time required for the electrolytic cell with an interception plate to reach the specified standard is 40 minutes less than that of the electrolytic cell without an interception plate, and the efficiency is increased by about 78.43%. It shows that under the same emission standard, the sewage treatment efficiency in the electrochemical cell with an interception plate is higher.

[0075] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0077] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An electrochemical box with a function of uniform medium flow, comprising a box body (100), wherein a plurality of electrode plates (400) which are vertically arranged and spaced along the X direction are arranged in the box body (100), and a circulating liquid inlet (120) is arranged at the bottom of the box body (100), and is characterized in that: A horizontally arranged intercepting plate (300) is provided inside the box body (100), and the peripheral side of the intercepting plate (300) is hermetically connected to the inner wall of the box body (100); Each electrode plate (400) is located above the intercepting plate (300), and the lower part of each electrode plate (400) is in contact with the intercepting plate (300); A plurality of flow rate control components (310) arranged side by side along the X direction are provided on the intercepting plate (300), and each flow rate control component (310) is respectively located between any two adjacent electrode plates (400); Each flow rate control component (310) includes a plurality of medium through holes (311) formed in the intercepting plate (300) and distributed along the Y direction. The flow rates of all the medium through holes (311) are the same, and the sum of the flow rates of all the medium through holes (311) is equal to the flow rate of the circulating liquid inlet (120).

2. The electrochemical box body with the function of uniform medium flow according to claim 1, characterized in that: The centers of the plurality of medium through holes (311) on the intercepting plate (300) are distributed in a rectangular array.

3. The electrochemical box body with the function of uniform medium flow according to claim 2, characterized in that: The center distances between any two adjacent medium through holes (311) along the X direction and along the Y direction are the same.

4. The electrochemical box body with the function of uniform medium flow according to claim 3, characterized in that: Taking the center of the circulating liquid inlet (120) as the coordinate origin, or the center of the circulating liquid inlet (120) is located on the Z axis of the coordinate; The areas of the medium through holes (311) distributed along the Y direction increase sequentially in the direction away from the X axis, The areas of the medium through holes (311) distributed along the X direction increase sequentially in the direction away from the Y axis.

5. The electrochemical box body with the function of uniform medium flow according to any one of claims 1-3, characterized in that: The center of any dielectric through hole (311) is collinear with the center of the circulating liquid inlet (120) in the vertical direction. The dielectric through hole (311) is a central hole, and the hole area of the central hole is , the hole area of the central hole , Wherein, n is the number of the medium through holes (311) formed on the intercepting plate (300), and S is the area of the circulating liquid inlet (120).

6. The electrochemical box body with the function of uniform medium flow according to claim 5, characterized in that: The distance between the center of the central hole and the center of the circulating liquid inlet (120) is , and the distance between the center of any other medium through-hole (311) and the center of the circulating liquid inlet (120) is , then the hole area of any other medium through-hole (311) satisfies the following formula: 。 7. The electrochemical box body with the function of uniform medium flow according to claim 1, 2, 3, 4 or 6, characterized in that: A material guiding groove (110) with a reduced opening is provided at the lower part of the box body (100), and the circulating liquid inlet (120) is located in the middle of the bottom of the material guiding groove (110) and communicates with the box body (100).

8. The electrochemical box body with the function of uniform medium flow according to claim 7, characterized in that: A circulating liquid outlet is provided at the upper part of the box body (100).

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