A sodium hypochlorite electrolysis electrode structure

Abstract

The utility model belongs to the technical field of sodium hypochlorite production equipment, and specifically discloses a sodium hypochlorite electrolysis electrode structure, including an electrolytic cell, wherein a plurality of matrices composed of electrode plates are evenly spaced inside the electrolytic cell, a longitudinal liquid channel is arranged between each matrix, and a plurality of layers of electrode plates are arranged in parallel in each matrix, an internal electrolyte flows inside each layer of electrode plates, and an external electrolyte flows inside the electrolytic cell outside each matrix. The utility model divides the original longer electrode plates into a plurality of matrices, and a plurality of layers of relatively short electrode plates are arranged in each matrix, and liquid channels are reserved between adjacent matrices, thereby shortening the flow channel of hydrogen generated by electrolysis, thereby accelerating the flow rate of the electrolyte, enabling the gas between the electrode plates to be quickly exchanged with the external electrolyte, thereby improving the electrolysis efficiency, retaining the advantages of the traditional plate-type electrode, and adding a cleaning device for the electrode plates to ensure the cleanliness of the electrode plate surface.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium hypochlorite production equipment, in particular to a sodium hypochlorite electrolysis electrode structure. Background Art

[0002] There are two types of electrodes for sodium hypochlorite generators: one is a mesh electrode and the other is a plate electrode. The mesh electrode has a good hydrogen discharge effect and the current efficiency of the water inside and outside the electrode is high. Therefore, the current efficiency of the mesh electrode is higher than that of the plate electrode. However, the mesh electrode has a high voltage due to its poor conductivity, and the life of the mesh electrode is short due to the uneven current distribution. Although the plate electrode has a lower current efficiency, it has good conductivity and a long life. Therefore, at this stage, plate electrodes are generally used as the mainstream electrodes for electrolytic chlorine production.

[0003] The existing plate-type electrodes have an integrated structure. When electrolysis occurs, the hydrogen generated on the cathode of the electrode plate increases the pressure in the gap between the electrodes, thereby pushing the electrolyte in the gap between the electrodes to both sides. The sodium hypochlorite concentration in this part of the electrolyte is relatively high, while the electrolyte outside the electrode is not in the electrolysis zone, resulting in a very low concentration of the electrolyte and it is difficult to flow to the gap between the electrodes, resulting in a high sodium hypochlorite concentration in the electrolyte in the gap between the electrode plates, but a very low concentration in the electrolyte outside the electrode, which affects the electrolysis efficiency. Utility Model Content

[0004] The utility model aims to provide a sodium hypochlorite electrolysis electrode structure which can improve the current efficiency of electrolysis.

[0005] The utility model is realized by the following technical scheme: a sodium hypochlorite electrolysis electrode structure, comprising an electrolytic cell, wherein a plurality of matrices consisting of electrode plates are evenly spaced inside the electrolytic cell, longitudinal liquid channels are arranged between each matrix, a plurality of layers of electrode plates are arranged in parallel inside each matrix, internal electrolyte flows inside each layer of the electrode plates, and external electrolyte flows inside the electrolytic cell outside each matrix.

[0006] The working principle of this technical solution is to divide the original long electrode plates into several matrices, set several layers of shorter electrode plates in each matrix, and leave liquid channels between adjacent matrices, so as to shorten the flow channel of hydrogen produced by electrolysis, thereby accelerating the flow rate of the electrolyte, so that the gas between the electrode plates and the external electrolyte can be quickly exchanged, while retaining the advantages of traditional plate electrodes. According to experimental comparison, the current efficiency of the matrix electrode can reach a maximum of 80%, which is 10% higher than the current efficiency of the traditional plate electrode.

[0007] In order to better realize the utility model, further, a transverse liquid channel is provided at the bottom end of the electrode plate.

[0008] In order to better implement the utility model, further, end metal pieces are provided at both ends of the electrode plate.

[0009] In order to better implement the utility model, further, the electrode plates in the adjacent rectangles are vertically arranged in the external electrolyte inside the electrolytic cell.

[0010] In order to better realize the utility model, further, a PVC reinforcement plate is provided on one side of the end metal part, a connecting rod is provided on one side of the PVC reinforcement plate, fixing rods are evenly spaced on the surface of the connecting rod, guide plates are symmetrically provided on the surface of the fixing rod, and a cleaning scraper is provided at one end of the fixing rod.

[0011] In order to better realize the utility model, further, a limiting slide groove is arranged inside the PVC reinforcement plate corresponding to the guide plate, and a fixed stopper is arranged at the bottom end of the limiting slide groove.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] (1) The utility model divides the original long electrode plates into several matrices, and arranges several layers of relatively short electrode plates in each matrix, leaving liquid channels between adjacent matrices, thereby shortening the flow channel of hydrogen generated by electrolysis, thereby accelerating the flow rate of the electrolyte, allowing the gas between the electrode plates and the external electrolyte to be quickly exchanged, thereby improving the electrolysis efficiency. According to experimental comparison, the current efficiency of the matrix electrode can reach a maximum of 80%, which is 10% higher than the current efficiency of the traditional plate electrode;

[0014] (2) While changing the plate electrode structure, the utility model retains the advantages of the traditional plate electrode, and also has the advantages of uniform current distribution, good conductivity, and long service life, thus ensuring the overall stability of the sodium hypochlorite electrolysis equipment;

[0015] (3) The utility model adds a cleaning device for the electrode plate, which realizes the movement of the cleaning scraper at one end of the fixed rod by pulling the connecting rod, so as to conveniently clean the surface of the electrode plate, avoid impurities adhering to the electrode plate and affecting the use efficiency of the electrode plate, so that the electrode plate maintains a high electrolysis efficiency, further prolongs the service life and improves the electrolysis efficiency, and is suitable for wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 This is an enlarged view of the local structure at A in the utility model.

[0020] Among them: 1 - electrolytic cell, 2 - external electrolyte, 3 - longitudinal liquid channel, 4 - electrode plate, 5 - internal electrolyte, 6 - transverse liquid channel, 7 - end metal parts, 8 - PVC reinforcement plate, 9 - connecting rod, 10 - fixing rod, 11 - guide plate, 12 - cleaning scraper. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] The main structure of this embodiment is as follows: Figure 1As shown, it includes an electrolytic cell 1, wherein a plurality of matrices consisting of electrode plates 4 are evenly spaced inside the electrolytic cell 1, a longitudinal liquid channel 3 is arranged between each matrix, and each matrix has a plurality of layers of parallel electrode plates 4, an internal electrolyte 5 flows inside each layer of the electrode plates 4, and an external electrolyte 2 flows inside the electrolytic cell 1 outside each matrix.

[0026] The specific use process is that when electrolysis occurs, several electrode plates 4 in the matrix undergo electrolysis reactions at the same time, and the hydrogen generated pushes the internal electrolyte 5 to both sides and collides in the longitudinal liquid channel 3. Since the electrode plates 4 in the matrix are relatively short, the internal electrolyte 5 in the internal gaps of the electrode plates 4 is more easily pushed out by the electrolyzed hydrogen. Due to the reduced pressure in the internal gaps of the electrode plates 4, the external electrolyte 2 is also more likely to enter the internal gaps of the electrode plates 4 in the matrix, thereby reducing the concentration of sodium hypochlorite in the electrolyte in the internal gaps of the electrode plates 4 and replenishing the electrolyte in the internal gaps of the electrode plates 4, thereby improving the electrolysis efficiency. After experimental comparison, the current efficiency of the matrix electrode can reach a maximum of 80%, which is 10% higher than the current efficiency of the traditional plate electrode.

[0027] Embodiment 2:

[0028] Based on the above embodiment, this embodiment further adds a transverse liquid channel 6, such as Figure 2 As shown, the bottom end of the electrode plate 4 is provided with a transverse liquid channel 6. The provision of the transverse liquid channel 6 can improve the flow efficiency of the electrolyte between the electrode plates 4, ensure the balance of the electrolyte concentration, and ensure the stability of the electrolysis operation. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0029] Embodiment 3:

[0030] Based on the above embodiment, this embodiment further adds an end metal piece 7, and the two ends of the electrode plate 4 are provided with an end metal piece 7. The end metal piece 7 is connected to the power supply bus to supply power, thereby improving the efficiency of the equipment. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0031] Embodiment 4:

[0032] On the basis of the above embodiment, the present embodiment further defines the structure of the electrode plates 4 in the matrix, and the electrode plates 4 in the adjacent rectangles are all vertically arranged in the external electrolyte 2 inside the electrolytic cell 1. The electrode plates 4 in the rectangles are all vertically arranged to increase the contact area between the electrode plates 4 and the electrolyte, and ensure the flow efficiency of the electrolyte. The other parts of the present embodiment are the same as the above embodiment and will not be repeated.

[0033] Embodiment 5:

[0034] Based on the above embodiments, this embodiment further adds a cleaning structure, such as Figure 3 As shown, a PVC reinforcing plate 8 is provided on one side of the end metal piece 7, a connecting rod 9 is provided on one side of the PVC reinforcing plate 8, a fixing rod 10 is evenly spaced on the surface of the connecting rod 9, a guide plate 11 is symmetrically provided on the surface of the fixing rod 10, and a cleaning scraper 12 is provided at one end of the fixing rod 10. Such a setting can pull the connecting rod 9 to drive the cleaning scraper 12 at one end of the fixing rod 10 to move, so as to conveniently clean the surface of the electrode plate 4 and improve the use effect of the equipment. Since the cleaning structure can only rely on the end metal piece 7 at the end of the electrolytic cell 1, it can only clean the electrode plates 4 in the matrix on both sides. Even so, it can effectively improve the electrolysis efficiency and extend the service life of the electrode plate. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0035] Embodiment 6:

[0036] Based on the above embodiment, this embodiment further defines the structure of the PVC reinforcement plate 8, such as Figure 3 As shown, the interior of the PVC reinforcement plate 8 is provided with a limited slide groove corresponding to the guide plate 11, and a fixed stopper is provided at the bottom end of the limited slide groove. Such a setting can prevent the guide plate 11 from being separated from the limited slide groove, thereby improving the stability of the device. The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0037] It can be understood that the working principle and working process of the sodium hypochlorite electrolysis electrode structure according to an embodiment of the utility model, such as the PVC reinforcement plate 8 and the cleaning scraper 12 and other components are prior art and are well known to those skilled in the art, and will not be described in detail here.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sodium hypochlorite electrolysis electrode structure, characterized in that: The invention comprises an electrolytic cell (1), wherein a plurality of matrices composed of electrode plates (4) are evenly spaced inside the electrolytic cell (1), longitudinal liquid channels (3) are arranged between each matrix, and each matrix has a plurality of layers of electrode plates (4) arranged in parallel, an internal electrolyte (5) flows inside each layer of the electrode plates (4), and an external electrolyte (2) flows inside the electrolytic cell (1) outside each matrix.

2. A sodium hypochlorite electrolysis electrode structure according to claim 1, characterized in that: A transverse liquid channel (6) is provided at the bottom end of the electrode plate (4).

3. A sodium hypochlorite electrolysis electrode structure according to claim 1 or 2, characterized in that: End metal parts (7) are provided at both ends of the electrode plate (4).

4. A sodium hypochlorite electrolysis electrode structure according to claim 1, characterized in that: The electrode plates (4) in adjacent matrices are vertically arranged in the external electrolyte (2) inside the electrolytic cell (1).

5. A sodium hypochlorite electrolysis electrode structure according to claim 3, characterized in that: A PVC reinforcing plate (8) is provided on one side of the end metal piece (7), a connecting rod (9) is provided on one side of the PVC reinforcing plate (8), fixing rods (10) are evenly spaced on the surface of the connecting rod (9), guide plates (11) are symmetrically provided on the surface of the fixing rod (10), and a cleaning scraper (12) is provided at one end of the fixing rod (10).

6. A sodium hypochlorite electrolysis electrode structure according to claim 5, characterized in that: A limiting slide groove is provided inside the PVC reinforcement plate (8) corresponding to the guide plate (11), and a fixed stopper is provided at the bottom end of the limiting slide groove.

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