An anode

Abstract

This utility model relates to an anode, comprising an anode plate, an anode plate frame, a gas collecting chamber, a first diaphragm, and a second diaphragm. The anode plate frame defines an anode plate receiving space with front and rear openings. The anode plate is placed within this space, and the gas collecting chamber is located above and communicates with it. An acid mist outlet is provided on one side of the gas collecting chamber. The first diaphragm covers the front end of the anode plate frame to close the front opening of the anode plate receiving space, and the second diaphragm covers the rear end of the anode plate frame to close the rear opening of the anode plate receiving space. Furthermore, the periphery of the first diaphragm is detachably and sealingly connected to the front end of the anode plate frame and the front wall of the gas collecting chamber, and the periphery of the second diaphragm is detachably and sealingly connected to the rear end of the anode plate frame and the rear wall of the gas collecting chamber. This design avoids a series of adverse effects caused by the diaphragm contacting the anode and cathode during use.

Description

Technical Field

[0001] This utility model relates to an anode and belongs to the field of non-ferrous metal electrolysis / electrowinning technology. Background Technology

[0002] Chinese utility model patent CN202021379079.0 discloses an insoluble frame-shaped anode structure for collecting acid mist. The structure includes a frame-shaped anode with connecting ribs fixed to it. A conductive screw is threaded to the top of the connecting ribs, and a conductive beam is connected to the upper end of the conductive screw. A gas collection hood is fixed between the connecting ribs and the conductive screw. A sealing membrane, pocket-shaped, is sealed to the lower edge of the gas collection hood. The size of the sealing membrane matches the frame-shaped anode, and the frame-shaped anode is completely enclosed within the sealed space formed by the gas collection hood and the sealing membrane. The frame-shaped anode consists of a frame and a titanium mesh (i.e., the anode) fixed to the frame. An acid mist outlet is provided on one side of the gas collection hood, connected to an exhaust fan or negative pressure pump. This allows for ventilation at the acid mist outlet, enabling direct extraction and collection of the acid mist, preventing it from being directly released into the environment during the electrowinning process.

[0003] This anode structure still employs the commonly used anode bagging method in the industry, where a pocket-shaped separator membrane is placed over the frame of the anode. Because this pocket-shaped separator membrane is only sealed at the opening to the lower edge of the gas collection hood, both sides of the separator membrane are loose. This results in two problems: firstly, the overall thickness of the anode structure increases, negatively impacting the electrode spacing of the electrolytic cell; secondly, the side walls of the separator membrane are prone to contact with the anode or cathode during use, leading not only to a decrease in the electrolysis / electrowinning efficiency of the anode or cathode but also to damage the separator membrane, affecting its lifespan and potentially causing short circuits between the anode and cathode. Furthermore, since this pocket-shaped separator membrane is usually sewn, the stitching is prone to corrosion over time, affecting the integrity and filtration performance of the membrane. In addition, due to the working pressure in the anode chamber, the sidewalls of the separator are prone to bulging outward, which further intensifies the contact with the cathode in the electrolytic cell, causing short circuits between the anode and cathode to occur frequently. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an anode that can avoid contact between the diaphragm and the cathode and anode during use, thus avoiding a series of adverse effects, and has high structural strength, long service life, good sealing performance, and convenient maintenance.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An anode includes an anode plate, an anode plate frame, a gas collecting chamber, a first diaphragm, and a second diaphragm. The anode plate frame defines an anode plate receiving space with front and rear openings. The anode plate is placed within this space. The gas collecting chamber is located above the anode plate receiving space and forms an acid mist collection space communicating with the upper end of the anode plate receiving space. An acid mist outlet is provided on one side of the gas collecting chamber. The first diaphragm covers the front end of the anode plate frame to close the front opening of the anode plate receiving space, and the second diaphragm covers the rear end of the anode plate frame to close the rear opening of the anode plate receiving space. Furthermore, the periphery of the first diaphragm is detachably and sealingly connected to the front end of the anode plate frame and the front wall of the gas collecting chamber, and the periphery of the second diaphragm is detachably and sealingly connected to the rear end of the anode plate frame and the rear wall of the gas collecting chamber.

[0007] Furthermore, it also includes a first sealing gasket, a second sealing gasket, a first pressure plate, and a second pressure plate, which are respectively frame-shaped; the first sealing gasket is placed between the inner peripheral surface of the first diaphragm and the outer front surface of the anode plate frame and the outer front wall surface of the gas collecting chamber, and the first pressure plate presses against the outer peripheral surface of the first diaphragm; the second sealing gasket is placed between the inner peripheral surface of the second diaphragm and the outer rear surface of the anode plate frame and the outer rear wall surface of the gas collecting chamber, and the second pressure plate presses against the outer peripheral surface of the second diaphragm.

[0008] Furthermore, it also includes a plurality of fastening bolts arranged at intervals according to the frame-shaped outline of the first pressure plate or the second pressure plate, and lock nuts that mate with each fastening bolt; each fastening bolt sequentially passes through the second pressure plate, the periphery of the second diaphragm, the second sealing gasket, the rear end of the anode plate frame or the rear end wall of the gas collecting chamber, the front end of the anode plate frame or the front end wall of the gas collecting chamber, the first sealing gasket, the periphery of the first diaphragm, and the first pressure plate, and is then locked and connected with the corresponding lock nut; or, each fastening bolt sequentially passes through the periphery of the first pressure plate and the first diaphragm. The first sealing gasket, the front end of the anode plate frame or the front wall of the gas collecting chamber, the rear end of the anode plate frame or the rear wall of the gas collecting chamber, the second sealing gasket, the periphery of the second diaphragm, and the rear of the second pressure plate are all locked and connected to the corresponding lock nuts; and the first pressure plate, the second pressure plate, the periphery of the first diaphragm, the periphery of the second diaphragm, the first sealing gasket, the second sealing gasket, the front end of the anode plate frame or the front wall of the gas collecting chamber, and the rear end of the anode plate frame or the rear wall of the gas collecting chamber are all provided with connection holes for corresponding fastening bolts to pass through.

[0009] Furthermore, it also includes at least one first isolation barrier and at least one second isolation barrier; the first isolation barrier is disposed on the outside of the first diaphragm, the upper and lower ends of the first isolation barrier are respectively pressed against the outer surface of the first pressure plate, and the upper and lower ends of the first isolation barrier are respectively provided with first fixing holes for corresponding fastening bolts to pass through; the second isolation barrier is disposed on the outside of the second diaphragm, the upper and lower ends of the second isolation barrier are respectively pressed against the outer surface of the second pressure plate, and the upper and lower ends of the second isolation barrier are respectively provided with second fixing holes for corresponding fastening bolts to pass through.

[0010] Furthermore, both the first and second isolation barriers include two longitudinal bars spaced apart along the width direction of the anode plate frame, an upper end connected to the upper end of the two longitudinal bars and used to press against the outer surface of the upper end of the first or second pressure plate, a lower end connected to the lower end of the two longitudinal bars and used to press against the outer surface of the lower end of the first or second pressure plate, and several horizontal bars spaced apart between the two longitudinal bars in the vertical direction. Through holes are formed between two adjacent horizontal bars, between the uppermost horizontal bar and the upper end, and between the lowermost horizontal bar and the lower end. The upper end and the lower end are respectively provided with the first fixing hole or the second fixing hole.

[0011] Furthermore, it also includes a first upper sealing plate and a second upper sealing plate; the anode plate frame includes an integrally formed U-shaped frame body with an upward opening and an upper frame edge connected to the opening end of the U-shaped frame body to close the opening end, the U-shaped frame body includes two side frame edges and a bottom frame edge; the first upper sealing plate is connected to the upper front part of the two side frame edges and the front end of the upper frame edge, the second upper sealing plate is connected to the upper rear end of the two side frame edges and the rear end of the upper frame edge, the first upper sealing plate, the second upper sealing plate, the upper frame edge and the upper part of the two side frame edges surround to form the gas collection chamber, the first upper sealing plate and the second upper sealing plate respectively constitute the front wall and rear wall of the gas collection chamber; the lower part of the two side frame edges and the bottom frame edge surround to form the anode plate receiving space, the periphery of the first diaphragm is detachably and sealingly connected to the lower end of the first upper sealing plate, the lower front part of the two side frame edges and the front end of the bottom frame edge, the periphery of the second diaphragm is detachably and sealingly connected to the lower end of the second upper sealing plate, the lower rear end of the two side frame edges and the rear end of the bottom frame edge.

[0012] Furthermore, the outer surfaces of the first and second upper sealing plates are flush with the front and rear outer surfaces of the anode plate frame, respectively; the upper frame edge, the two side frame edges, and the bottom frame edge are all U-shaped profile structures with openings facing the inside of the anode plate frame, and the upper ends of the two side frame edges are respectively formed with U-shaped openings. The upper end walls of the upper frame edge are respectively provided with a flange extending horizontally outward, and the flanges are embedded in the corresponding U-shaped openings and welded together with them.

[0013] Furthermore, it also includes an anode plate support, a conductive beam, and a conductive connecting plate; the upper part of the anode plate support extends into the gas collection chamber, the lower part of the anode plate support extends into the anode plate receiving space, and the upper end of the anode plate is fixedly connected to the lower part of the anode plate support; the conductive beam is located above the upper frame edge, the upper end of the conductive connecting plate is connected to the conductive beam, the lower end of the conductive connecting plate passes through the upper frame edge and extends into the gas collection chamber to connect with the upper part of the anode plate support, and the upper frame edge is provided with a through-hole for the conductive connecting plate to pass through and matching the shape of the conductive connecting plate.

[0014] Furthermore, the anode plate support includes a plurality of ribs arranged parallel to each other along the width direction of the anode plate frame; the upper part of each rib extends into the gas collection chamber, and the top of each rib is provided with a first mounting groove facing upwards; the lower end of the conductive connecting plate is embedded in the first mounting groove of each rib and welded to it; the lower part of each rib extends into the anode plate receiving space, and the bottom end of each rib is provided with a second mounting groove facing downwards; the upper end of the anode plate is embedded in the second mounting groove of each rib and welded to it.

[0015] Furthermore, the front and rear ends of each stiffener are respectively attached to the inner surfaces of the first and second upper sealing plates, forming an acid mist channel between two adjacent stiffeners, and the upper part of each stiffener is also provided with a vent hole for connecting the acid mist channels; the acid mist outlet is located on the upper part of one side of the frame, and the upper part of the other side of the frame is provided with a liquid outlet.

[0016] The beneficial effects of this utility model are as follows:

[0017] First, in this invention, the peripheries of the first and second diaphragms are detachably and sealed to the front and rear ends of the anode plate frame and the front and rear ends of the gas collecting chamber, respectively. This makes the peripheries of the two diaphragms essentially taut, thereby ensuring the flatness of the membrane surfaces of the two diaphragms and preventing contact with the anode plate in the anode chamber or adjacent cathode plates in the electrolytic cell during use. This solves the problems of reduced working efficiency of the anode / cathode plate and easy damage and short service life of the diaphragms caused by such contact.

[0018] Secondly, both the first and second diaphragm sheets in this invention are integral sheet structures without any thread ends, so unlike in the prior art, the thread ends will not be corroded, thus affecting the integrity and filtration performance of the diaphragm.

[0019] Furthermore, this utility model has isolation barriers on the outer sides of the first diaphragm and the second diaphragm, which can effectively prevent the two diaphragms from bulging outward during operation, thereby avoiding the problem of short circuit between the anode and cathode caused by contact between the diaphragm and the adjacent cathode plate.

[0020] Finally, in this utility model, the gas collecting chamber and the anode plate accommodating space are integrally formed by the anode plate frame. Therefore, it not only has high structural strength, long service life, good sealing performance, and is easy to install and manufacture, but also convenient to maintain. When the anode plate in the anode plate accommodating space is damaged or reaches the end of its service life, it is only necessary to open the two diaphragms and related components, and then separate the anode plate from the anode plate support and replace it individually, without having to replace the anode plate frame, anode plate support, etc., thereby greatly reducing maintenance costs. Attached Figure Description

[0021] Figure 1 This is a front view schematic diagram of an anode according to the present invention.

[0022] Figure 2 This is a rear view schematic diagram of an anode according to the present invention.

[0023] Figure 3 yes Figure 1 Schematic diagram of cross section AA.

[0024] Figure 4 This is an exploded view of an anode according to this utility model. Figure 1 .

[0025] Figure 5 This is an exploded view of an anode according to this utility model. Figure 2 .

[0026] Figure 6 This is a structural schematic diagram of the isolation barrier described in this utility model.

[0027] Figure 7 This is an exploded view of the anode plate frame described in this utility model.

[0028] Figure 8 This is an enlarged schematic diagram of the conductive connecting plate and the upper frame edge described in this utility model.

[0029] Figure 9 This is a partial enlarged structural schematic diagram of this utility model. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0031] like Figures 1 to 9As shown, the present invention provides an anode comprising an anode plate 1, an anode plate frame 2, a gas collecting chamber 3, a first diaphragm 4, and a second diaphragm 5. The anode plate frame 2 defines an anode plate receiving space 6 with front and rear openings. The anode plate 1 is placed within this anode plate receiving space 6. The gas collecting chamber 3 is located above the anode plate receiving space 6, and an acid mist collecting space 30 communicating with the upper end of the anode plate receiving space 6 is formed within the gas collecting chamber 3. An acid mist outlet 7 is provided on one side of the gas collecting chamber 3, which can be connected to an external exhaust fan. The first diaphragm 4 covers the front end of the anode plate frame 2 to close the front opening 61 of the anode plate receiving space 6, and the second diaphragm 5 covers the rear end of the anode plate frame 2 to close the rear opening 62 of the anode plate receiving space 6. Furthermore, the periphery 4a of the first diaphragm 4 is detachably and sealed to the front end of the anode plate frame 2 and the front wall 31 of the gas collecting chamber 3, and the periphery 5a of the second diaphragm 5 is detachably and sealed to the rear end of the anode plate frame 2 and the rear wall 32 of the gas collecting chamber 3.

[0032] The first diaphragm 8 and the second diaphragm 9 can be made of materials commonly used in the industry, and have many micropores that allow electric ions to pass through, but provide a barrier to electrolytes and gases.

[0033] When the anode plate 1 is energized, the acid mist generated will flow upward from the anode plate housing space 6 into the acid mist collection space 30 in the gas collection chamber 10, and will be discharged outward through the acid mist outlet 7 to an external collection device for cleaning.

[0034] The anode further includes a first sealing gasket 8, a second sealing gasket 9, a first pressure plate 10, and a second pressure plate 11, all of which are frame-shaped. The first sealing gasket 8 is placed between the inner surface of the periphery 4a of the first diaphragm 4 and the outer surface of the front end of the anode frame 2 and the outer surface of the front end wall 31 of the gas collecting chamber 3. The first pressure plate 10 presses against the outer surface of the periphery 4a of the first diaphragm 4. The second sealing gasket 9 is placed between the inner surface of the periphery 5a of the second diaphragm 5 and the outer surface of the rear end of the anode frame 2 and the outer surface of the rear end wall 32 of the gas collecting chamber 3. The second pressure plate 11 presses against the outer surface of the periphery 5a of the second diaphragm 5.

[0035] The anode also includes a plurality of fastening bolts 12 arranged at intervals according to the frame-shaped outline of the first pressure plate 10 or the second pressure plate 11, and lock nuts 13 that mate with each fastening bolt 12.

[0036] Each fastening bolt 12 passes through the second pressure plate 11, the periphery 5a of the second diaphragm 5, the second sealing gasket 9, the rear end of the anode frame 2 or the rear end wall 32 of the gas collecting chamber 3, the front end of the anode frame 2 or the front end wall 31 of the gas collecting chamber 3, the first sealing gasket 8, the periphery 4a of the first diaphragm 4, and the first pressure plate 10, and is then locked to the corresponding lock nut 13. This achieves a detachable sealed connection between the periphery 4a of the first diaphragm 4 and the front end of the anode frame 2 and the front end wall 31 of the gas collecting chamber 3, as well as a detachable sealed connection between the periphery 5a of the second diaphragm 5 and the rear end of the anode frame 2 and the rear end wall 32 of the gas collecting chamber 3.

[0037] Alternatively, each fastening bolt 12 may sequentially pass through the first pressure plate 10, the periphery 4a of the first diaphragm 4, the first sealing gasket 8, the front end of the anode frame 2 or the front wall 31 of the gas collecting chamber 3, the rear end of the anode frame 2 or the rear wall 32 of the gas collecting chamber 3, the second sealing gasket 9, the periphery 5a of the second diaphragm 5, and the second pressure plate 11, and then be locked with the corresponding lock nut 13. This achieves a detachable sealed connection between the periphery 4a of the first diaphragm 4 and the front end of the anode frame 2 and the front wall 31 of the gas collecting chamber 3, as well as a detachable sealed connection between the periphery 5a of the second diaphragm 5 and the rear end of the anode frame 2 and the rear wall 32 of the gas collecting chamber 3.

[0038] In the above structure, since the periphery 4a of the first diaphragm 4 and the periphery 5a of the second diaphragm 5 are respectively pressed by the first pressure plate 10 and the second pressure plate 11, and the fastening bolts 12 are arranged at intervals according to the frame-like outline of the first pressure plate 10 or the second pressure plate 11, the peripheries of the two diaphragms are tightened, thereby ensuring the flatness of the membrane surfaces of the two diaphragms. At the same time, the use of fastening bolts and lock nuts to achieve locking not only facilitates installation and disassembly, but also improves the firmness of the connection.

[0039] Furthermore, the first pressure plate 10, the second pressure plate 11, the periphery 4a of the first diaphragm 4, the periphery 5a of the second diaphragm 5, the first sealing gasket 8, the second sealing gasket 9, the front end of the anode plate frame 2 or the front end wall 31 of the gas collecting chamber 3, and the rear end of the anode plate frame 2 or the rear end wall 32 of the gas collecting chamber 3 are all pre-set with connection holes for the corresponding fastening bolts 12 to pass through.

[0040] Therefore, the anode also includes at least one first isolation barrier 14 and at least one second isolation barrier 15. The first isolation barrier 14 is disposed on the outside of the first diaphragm 4, with its upper and lower ends pressing against the outer surface of the first pressure plate 10, and each of its upper and lower ends is provided with a first fixing hole 140 for the corresponding fastening bolt 12 to pass through. The second isolation barrier 15 is disposed on the outside of the second diaphragm 5, with its upper and lower ends pressing against the outer surface of the second pressure plate 11, and each of its upper and lower ends is provided with a second fixing hole 150 for the corresponding fastening bolt 12 to pass through. In this structure, the first isolation barrier 14 and the second isolation barrier 15 can respectively prevent the first diaphragm 4 and the second diaphragm 5 from bulging outward, thereby ensuring that the two diaphragms will not short-circuit with the adjacent cathode plate in the electrolytic cell during use.

[0041] Each first isolation barrier 14 and each second isolation barrier 15 includes: two longitudinal bars 141 or 151 spaced apart along the width direction of the anode plate frame 2; an upper end portion 142 or 152 connected to the upper ends of the two longitudinal bars 141 or 151 and used to press against the outer surface of the upper end of the first pressure plate 10 or the second pressure plate 11; a lower end portion 143 or 153 connected to the lower ends of the two longitudinal bars 141 or 151 and used to press against the outer surface of the lower end of the first pressure plate 10 or the second pressure plate 11; and two vertical bars spaced apart along the vertical direction. Several horizontal bars 144 or 154 are placed between the two vertical bars 141 or 151. Through holes 145 or 155 are formed between adjacent horizontal bars 144 or 154, between the uppermost horizontal bar 144 or 154 and the upper end 142 or 152, and between the lowermost horizontal bar 144 or 154 and the lower end 143 or 153. Furthermore, the upper end 142 or 152 and the lower end 143 or 153 are respectively provided with the first fixing hole 140 or the second fixing hole 150. In this structure, the through holes 145 or 155 can reduce the blocking area of ​​the first isolation barrier 14 and the second isolation barrier 15 on the first diaphragm 4 and the second diaphragm 5, thereby increasing the passage area of ​​ions during operation.

[0042] The anode also includes a first upper sealing plate 16 and a second upper sealing plate 17. The anode frame 2 includes an integrally formed U-shaped frame body 2a with an upward opening and an upper frame side 2b connected to the opening end of the U-shaped frame body 2a to close the opening end. The U-shaped frame body 2a includes two side frame sides 2a1 and a bottom frame side 2a2. The first upper sealing plate 16 is connected to the upper front end of the two side frame sides 2a1 and the front end of the upper frame side 2b. The second upper sealing plate 17 is connected to the upper rear end of the two side frame sides 2a1 and the rear end of the upper frame side 2b. The first upper sealing plate 16, the second upper sealing plate 17, the upper frame side 2b, and the upper part of the two side frame sides 2a1 surround to form the gas collection chamber 3. The first upper sealing plate 16 and the second upper sealing plate 17 respectively constitute the front wall 31 and the rear wall 32 of the gas collection chamber 3. The lower parts of the two side frames 2a1 and the bottom frame 2a2 surround to form the anode plate receiving space 6. The periphery 4a of the first diaphragm 4 is detachably and sealed to the lower end of the first upper sealing plate 16, the lower front part of the two side frames 2a1 and the front end of the bottom frame 2a2. The periphery 5a of the second diaphragm 5 is detachably and sealed to the lower end of the second upper sealing plate 17, the lower rear part of the two side frames 2a1 and the rear end of the bottom frame 2a2.

[0043] The outer surfaces of the first upper sealing plate 16 and the second upper sealing plate 17 are flush with the front and rear outer surfaces of the anode plate frame 2, respectively. This design provides favorable conditions for the sealing and bonding between the periphery of the first diaphragm 4 and the second diaphragm 5 and the corresponding connecting surfaces.

[0044] The upper frame 2b, the two side frame edges 2a1 and the bottom frame edge 2a2 are all U-shaped profile structures with openings facing the inside of the anode plate frame 2. The upper ends of the two side frame edges 2a1 are respectively formed with U-shaped openings 2a11. The upper end wall of the upper frame edge 2b is provided with a flange 2b2 extending horizontally outward on both sides. The flange 2b2 is embedded in the corresponding U-shaped opening 2a11 and sealed together with it. This prevents the acid mist collected in the gas collection chamber 3 from overflowing through the connection gap between the upper frame edge 2b and the two side frame edges 2a1.

[0045] The anode also includes an anode plate support 18, a conductive beam 19, and a conductive connecting plate 20. The upper part of the anode plate support 18 extends into the gas collecting chamber 3, and the lower part of the anode plate support 18 extends into the anode plate receiving space 6. The upper end of the anode plate 1 is fixedly connected to the lower part of the anode plate support 18. The conductive beam 19 is located above the upper frame edge 2b. The upper end of the conductive connecting plate 20 is connected to the conductive beam 19, and the lower end of the conductive connecting plate 20 passes through the upper frame edge 2b and extends into the gas collecting chamber 3 to connect with the upper part of the anode plate support 18. The upper frame edge 2b is provided with a through-hole 2b1 for the conductive connecting plate 20 to pass through and which matches the shape of the conductive connecting plate 20.

[0046] The conductive beam 19 consists of a copper beam body 191 and a cast lead layer 192 covering the outer surface of the copper beam body 191, thus possessing excellent electrical conductivity and corrosion resistance. The conductive connecting plate 20, the anode plate support 18, and the anode plate 1 are all made of titanium or titanium alloy, also possessing excellent electrical conductivity and corrosion resistance. When the conductive beam 19 is energized, the anode plate 1 can be energized and operated through the electrical conduction via the conductive connecting plate 20 and the anode plate support 18.

[0047] The anode plate support 18 includes several ribs 181 arranged parallel to each other along the width direction of the anode plate frame 2. The upper part of each rib 181 extends into the gas collection chamber 3, and the top of each rib 181 is provided with an upward-opening first mounting groove 1811. The lower end of the conductive connecting plate 20 is embedded in the first mounting groove 1811 of each rib 181 and welded to it. The lower part of each rib 181 extends into the anode plate receiving space 6, and the bottom end of each rib 181 is provided with a downward-opening second mounting groove 1812. The upper end of the anode plate 1 is embedded in the second mounting groove 1812 of each rib 181 and welded to it. When the anode plate 1 is damaged or reaches the end of its service life, the anode plate 1 can be disassembled and replaced simply by cutting the weld at the upper end of the anode plate 1.

[0048] The front and rear ends of each stiffening rib 181 are respectively attached to the inner surfaces of the first upper sealing plate 16 and the second upper sealing plate 17, thereby providing support for the first upper sealing plate 16 and the second upper sealing plate 17 and improving the structural strength of the first upper sealing plate 16 and the second upper sealing plate 17. An acid mist channel 300 is formed between two adjacent stiffening ribs 181, and a vent hole 1813 is also cut out on the upper part of each stiffening rib 181 to connect the acid mist channels 300.

[0049] The acid mist outlet 7 is located on the upper part of one side frame 2a1, and the liquid outlet 21 is located on the upper part of the other side frame 2a1.

[0050] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. An anode, characterized in that: Includes an anode plate, an anode plate frame, a gas collecting chamber, a first diaphragm, and a second diaphragm; The anode plate frame defines an anode plate receiving space with front and rear openings. The anode plate is placed in the anode plate receiving space. The gas collecting chamber is located above the anode plate receiving space, and an acid mist collecting space is formed in the gas collecting chamber that communicates with the upper end of the anode plate receiving space. An acid mist outlet is provided on one side of the gas collecting chamber. The first diaphragm covers the front end of the anode plate frame to close the front opening of the anode plate accommodating space, and the second diaphragm covers the rear end of the anode plate frame to close the rear opening of the anode plate accommodating space. Furthermore, the periphery of the first diaphragm is detachably and sealingly connected to the front end of the anode plate frame and the front wall of the gas collecting chamber, and the periphery of the second diaphragm is detachably and sealingly connected to the rear end of the anode plate frame and the rear end wall of the gas collecting chamber.

2. The anode according to claim 1, characterized in that: It also includes a first sealing gasket, a second sealing gasket, a first pressure plate, and a second pressure plate, which are respectively frame-shaped; The first sealing gasket is placed between the inner peripheral surface of the first diaphragm and the outer front surface of the anode plate frame and the outer front wall surface of the gas collecting chamber, and the first pressure plate presses against the outer peripheral surface of the first diaphragm. The second sealing gasket is placed between the inner peripheral surface of the second diaphragm and the outer rear end surface of the anode plate frame and the outer rear end wall surface of the gas collecting chamber, and the second pressure plate presses against the outer peripheral surface of the second diaphragm.

3. An anode according to claim 2, characterized in that: It also includes a number of fastening bolts arranged at intervals according to the frame-shaped outline of the first pressure plate or the second pressure plate, and lock nuts that mate with each fastening bolt; Each fastening bolt passes through the second pressure plate, the periphery of the second diaphragm, the second sealing gasket, the rear end of the anode plate frame or the rear end wall of the gas collecting chamber, the front end of the anode plate frame or the front end wall of the gas collecting chamber, the first sealing gasket, the periphery of the first diaphragm, and the first pressure plate in sequence, and is then locked and connected to the corresponding lock nut. Alternatively, each fastening bolt sequentially passes through the first pressure plate, the periphery of the first diaphragm, the first sealing gasket, the front end of the anode plate frame or the front wall of the gas collecting chamber, the rear end of the anode plate frame or the rear wall of the gas collecting chamber, the second sealing gasket, the periphery of the second diaphragm, and the second pressure plate before being locked and connected to the corresponding lock nut. Furthermore, the first pressure plate, the second pressure plate, the periphery of the first diaphragm, the periphery of the second diaphragm, the first sealing gasket, the second sealing gasket, the front end of the anode plate frame or the front wall of the gas collecting chamber, and the rear end of the anode plate frame or the rear wall of the gas collecting chamber are all provided with connection holes for corresponding fastening bolts to pass through.

4. An anode according to claim 3, characterized in that: It also includes at least one first barrier and at least one second barrier; The first isolation barrier is disposed on the outside of the first diaphragm sheet, and the upper and lower ends of the first isolation barrier are respectively pressed against the outer surface of the first pressure plate. The upper and lower ends of the first isolation barrier are also respectively provided with first fixing holes for corresponding fastening bolts to pass through. The second isolation barrier is located on the outside of the second diaphragm. The upper and lower ends of the second isolation barrier press against the outer surface of the second pressure plate, and the upper and lower ends of the second isolation barrier are respectively provided with second fixing holes for corresponding fastening bolts to pass through.

5. An anode according to claim 4, characterized in that: Both the first and second isolation barriers include two longitudinal bars spaced apart along the width of the anode plate frame, an upper end connected to the upper end of the two longitudinal bars and used to press against the outer surface of the upper end of the first or second pressure plate, a lower end connected to the lower end of the two longitudinal bars and used to press against the outer surface of the lower end of the first or second pressure plate, and several horizontal bars spaced apart between the two longitudinal bars in the vertical direction. Through holes are formed between two adjacent horizontal bars, between the uppermost horizontal bar and the upper end, and between the lowermost horizontal bar and the lower end. Furthermore, the upper end and the lower end are respectively provided with the first fixing hole or the second fixing hole.

6. An anode according to claim 1, characterized in that: It also includes a first upper sealing plate and a second upper sealing plate; The anode plate frame includes an integrally formed U-shaped frame body with an upward opening and an upper frame side connected to the opening end of the U-shaped frame body to close the opening end. The U-shaped frame body includes two side frames and a bottom frame side. The first upper sealing plate is connected to the upper front part of the two side frames and the front end of the upper frame. The second upper sealing plate is connected to the upper rear end of the two side frames and the rear end of the upper frame. The first upper sealing plate, the second upper sealing plate, the upper frame and the upper part of the two side frames surround to form the gas collection chamber. The first upper sealing plate and the second upper sealing plate respectively constitute the front wall and the rear wall of the gas collection chamber. The lower parts of the two side frames and the bottom frame surround to form the anode plate receiving space. The periphery of the first diaphragm is detachably and sealingly connected to the lower end of the first upper sealing plate, the lower front parts of the two side frames, and the front front part of the bottom frame. The periphery of the second diaphragm is detachably and sealingly connected to the lower end of the second upper sealing plate, the lower rear parts of the two side frames, and the rear rear part of the bottom frame.

7. An anode according to claim 6, characterized in that: The outer surfaces of the first and second upper sealing plates are flush with the front and rear outer surfaces of the anode plate frame, respectively. The upper frame, two side frames, and bottom frame are all U-shaped profile structures with openings facing the inside of the anode plate frame. The upper ends of the two side frames are respectively formed with U-shaped openings. The upper wall of the upper frame is provided with a flange extending horizontally outward on both sides. The flanges are embedded in the corresponding U-shaped openings and are welded together with them.

8. An anode according to claim 6, characterized in that: It also includes an anode plate support, conductive beams, and conductive connecting plates; The upper part of the anode plate support extends into the gas collection chamber, the lower part of the anode plate support extends into the anode plate receiving space, and the upper end of the anode plate is fixedly connected to the lower part of the anode plate support. The conductive beam is located above the upper frame edge. The upper end of the conductive connecting plate is connected to the conductive beam. The lower end of the conductive connecting plate passes through the upper frame edge and extends into the gas collection chamber, connecting to the upper part of the anode plate support. The upper frame edge is provided with a through-hole for the conductive connecting plate to pass through and matching the shape of the conductive connecting plate.

9. An anode according to claim 8, characterized in that: The anode plate support includes several ribs that are parallel and spaced apart along the width of the anode plate frame; the upper part of each rib extends into the gas collection chamber, and the top of each rib is provided with a first mounting groove that opens upwards; the lower end of the conductive connecting plate is embedded in the first mounting groove of each rib and welded to it; the lower part of each rib extends into the anode plate receiving space, and the bottom end of each rib is provided with a second mounting groove that opens downwards; the upper end of the anode plate is embedded in the second mounting groove of each rib and welded to it.

10. An anode according to claim 9, characterized in that: The front and rear ends of each stiffener are respectively attached to the inner surfaces of the first and second upper sealing plates, and an acid mist channel is formed between two adjacent stiffeners. Furthermore, each stiffener is also provided with a ventilation hole at the top to connect the acid mist channels. The acid mist outlet is located on the upper part of one side of the frame, and the liquid outlet is located on the upper part of the other side of the frame.

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