Automatic drying equipment for electrolytic manganese cathode plate

Abstract

The utility model discloses an electrolytic manganese cathode plate automatic drying device which comprises a drying box body, a horizontal partition plate and a vertical partition plate are arranged in the drying box body to divide the drying box body into a first preheating area, a second preheating area, a heating drying area and a cooling area, a conveying chain assembly is arranged in the drying box body, and an air cooler and an air heater are arranged beside the drying box body. The air cooler is communicated with the cooling area, the cooling area is communicated with the first preheating area, the air heater is communicated with the heating and drying area, and a first ventilation hole communicated with the second preheating area above the heating and drying area is formed in the top of the heating and drying area. The cathode plate is sequentially conveyed to pass through the first preheating area, the second preheating area, the heating drying area and the cooling area through the conveying chain assembly, cold air blown out by the air cooler is heated in the cooling process and enters the first preheating area to be preheated for the first time, and hot air blown out by the air heater is dried and then enters the second preheating area to be preheated for the second time. Heat of equipment is fully utilized, heat efficiency is improved, energy waste is reduced, and production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic manganese production, in particular to automatic drying equipment for electrolytic manganese cathode plates. Background Art

[0002] Metallic manganese is an important industrial raw material, widely used in metallurgy, chemical industry, light industry, electronic materials and other industries, among which the most important application is in the iron and steel metallurgy industry. At present, metallic manganese is mainly obtained by acid leaching manganese ore to obtain manganese salt, which is sent to the electrolytic cell for electrolysis to separate elemental metallic manganese. The metallic manganese attached to the cathode plate is then passivated, washed, dried, and peeled off to obtain the finished metallic manganese. The drying effect of the metallic manganese on the cathode plate directly affects the subsequent peeling effect of manganese. At present, the drying method for the cathode plate mainly adopts tunnel oven for drying. The cathode plate is sent into the tunnel oven for drying through the conveyor chain. In order to achieve the drying effect, the tunnel oven used is relatively large in size, occupying a large area of ​​the factory area, and the heat generated by the equipment during the drying process is not fully utilized, the thermal efficiency is low, and the equipment energy consumption is high.

[0003] The Chinese patent publication number CN206094842U discloses an electrolytic manganese cathode plate drying device, which includes: a channel-type housing with an open tunnel-type air inlet duct and a roller-type heat-insulating door, and an air supply duct device including a high-pressure centrifugal fan and an air heater in a pit provided at the outer end of the housing. The utility model also has the disadvantages of being bulky, occupying a large area, having low thermal efficiency, and having high energy consumption. Utility Model Content

[0004] The main purpose of the utility model is to overcome the defects of the above-mentioned background technology and provide an automatic drying device for electrolytic manganese cathode plates.

[0005] To achieve the above-mentioned purpose, the utility model proposes an automatic drying equipment for electrolytic manganese cathode plates, including a drying box body, wherein horizontal partitions and vertical partitions are arranged inside the drying box body, which are used to divide the interior of the drying box body into a first preheating zone, a second preheating zone, a heating and drying zone and a cooling zone, wherein a conveying chain assembly is arranged inside the drying box body, wherein the conveying chain assembly is used to convey the cathode plates to be dried through the first preheating zone, the second preheating zone, the heating and drying zone and the cooling zone in sequence, and a cold air blower and a hot air blower are respectively arranged beside the drying box body, wherein the cold air blower is connected to the cooling zone through an air outlet duct, the cooling zone is connected to the first preheating zone through a return air duct, and the hot air blower is connected to the heating and drying zone through a hot air duct, and the portion of the horizontal partition located at the top of the heating and drying zone is provided with a plurality of first ventilation holes connected to the second preheating zone above. After the cathode plate is passivated and cleaned, it enters the first preheating zone, the second preheating zone, the heating and drying zone and the cooling zone in sequence under the conveyor chain assembly. The cold air blown out by the cold air blower is heated and enters the first preheating zone for the first preheating to make full use of the heat generated when cooling the cathode plate. After the hot air blower finally heats and dries the cathode plate that has passed through the heating and drying zone, the hot air enters the second preheating zone through the first ventilation hole for the second preheating to make full use of the heat of the equipment, effectively improves the thermal efficiency of the drying equipment, reduces energy waste, and reduces production costs.

[0006] Further optimize the technical solution, the drying box body is provided with a second vent and a third vent on the two side walls opposite to the cooling zone, the second vent is provided with an air outlet hood, the air outlet hood is connected to one end of the air outlet pipe, the third vent is provided with a return air hood, the return air hood is connected to one end of the return air pipe, the drying box body is provided with a fourth vent on the side wall corresponding to the first preheating zone, the fourth vent is provided with an air inlet hood, the air inlet hood is connected to the other end of the return air pipe. The cooling air enters the cooling zone from the second vent and comes out from the third vent, and enters the first preheating zone through the fourth vent to perform the first preheating drying on the cathode plate that has just entered the drying device.

[0007] To further optimize the technical solution, the return air duct is connected to a first induced draft fan, which extracts hot air generated by the cooling heat exchange in the cooling zone and sends it to the first preheating zone, thereby increasing the flow speed and improving the cooling and preheating effects.

[0008] To further optimize the technical solution, a tail gas washing tower is provided next to the drying box, and the tail gas washing tower is connected to the first preheating zone and the second preheating zone respectively. The tail gas generated by the equipment is desulfurized and purified by the tail gas washing tower before being discharged, so as to avoid pollutants in the tail gas and cause environmental pollution.

[0009] To further optimize the technical solution, a fifth ventilation hole is provided on the top wall of the drying box body corresponding to the first preheating zone, and a sixth ventilation hole is provided on the top wall of the drying box body corresponding to the second preheating zone. A first exhaust hood is provided at the fifth ventilation hole, and a second exhaust hood is provided at the sixth ventilation hole. Both the first exhaust hood and the second exhaust hood are connected to the exhaust gas washing tower through an exhaust pipe, the exhaust gas washing tower is connected to an exhaust pipe, the exhaust pipe is connected to a second induced draft fan, and the outlet of the second induced draft fan is connected to the chimney.

[0010] To further optimize the technical solution, the horizontal partition is inclined toward the side away from the fourth ventilation hole corresponding to the bottom surface of the first preheating zone, and a water collecting tank is provided at the inclined bottom end, and the water collecting tank is connected to the tail gas pipe through a drainage pipe. The water droplets dripping to the bottom surface of the first preheating zone are collected by the water collecting tank, and then discharged to the outside of the drying box through the drainage pipe, so as to avoid excessive water vapor in the first preheating zone affecting the preheating.

[0011] To further optimize the technical solution, an air distribution pipe is provided at the bottom of the heating and drying area, and the air distribution pipe is connected to the hot air pipe. The hot air entering the heating and drying area can be blown upward evenly through the air distribution pipe to dry the cathode plate.

[0012] To further optimize the technical solution, the side wall of the drying box is provided with a drying inlet and a drying outlet, the vertical partition is provided with a first through hole and a second through hole, and the drying inlet, the drying outlet, the first through hole and the second through hole are all provided with soft door curtains. The soft door curtains are used for isolation to reduce the mixing of drying airflows in various areas during drying operation.

[0013] To further optimize the technical solution, the conveying chain assembly includes an upper horizontal conveying member, a lower horizontal conveying member and a vertical conveying member. The conveying directions of the upper horizontal conveying member and the lower horizontal conveying member are opposite. The vertical conveying member is arranged at one end of the drying box body and corresponds to the end end of the upper horizontal conveying member and the starting end of the lower horizontal conveying member respectively.

[0014] To further optimize the technical solution, the upper horizontal conveying member, the lower horizontal conveying member and the vertical conveying member all include two sets of conveying chains, a transmission motor and a drive chain arranged in parallel. The transmission motor adopts a dual-axis motor. A main drive sprocket is provided on the output shaft of the transmission motor. The two sets of conveying chains are respectively mounted on the main conveying sprocket and the slave conveying sprocket. A conveying shaft is provided on the main conveying sprocket. A slave drive sprocket is provided on the conveying shaft. The drive chain is mounted on the main drive sprocket and the slave drive sprocket.

[0015] The beneficial effects of the utility model include: the cathode plate is conveyed into the drying box by the conveying chain assembly, and passes through the first preheating zone, the second preheating zone, the heating and drying zone and the cooling zone in sequence; while conveying, the cold air blower blows cold air into the cooling zone to cool the cathode plate that has just come out of the heating and drying zone; the cooling air is heated and enters the first preheating zone through the return air duct to perform the first preheating on the cathode plate that has just entered the drying device, so as to make full use of the heat generated when cooling the cathode plate; the hot air blower also blows hot air into the heating and drying zone at the same time to perform hot air drying on the cathode plate that has passed through the heating and drying zone; during the drying process, the hot air rises through the first ventilation hole to enter the second preheating zone for the second preheating, so as to make full use of the heat generated by the equipment, effectively improve the thermal efficiency of the drying equipment, reduce energy waste, and reduce production costs; in addition, the automatic drying equipment for electrolytic manganese cathode plates is designed with a double-layer structure, which is simple and compact, and effectively reduces the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the drying equipment in the embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of a drying box in an embodiment of the present utility model.

[0018] Figure 3 It is a schematic diagram of a cutaway drying box in an embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the back of the drying device in the embodiment of the utility model.

[0020] Figure 5 It is a schematic diagram of a conveyor chain assembly in an embodiment of the utility model.

[0021] Figure numerals: 1 drying box; 101 first preheating zone; 102 second preheating zone; 103 heating and drying zone; 104 cooling zone; 105 second ventilation hole; 106 third ventilation hole; 107 air outlet hood; 108 return air hood; 109 fourth ventilation hole; 1010 air inlet hood; 1011 fifth ventilation hole; 1012 sixth ventilation hole; 1013 first exhaust hood; 1014 second exhaust hood; 1015 exhaust pipe; 1016 drying inlet; 1017 drying outlet; 2 horizontal partition; 201 first ventilation hole; 202 drainage pipe; 3 vertical partition; 301 first through port; 302 second through port : opening; 4 conveying chain assembly; 401 upper horizontal conveying member; 402 lower horizontal conveying member; 403 vertical conveying member; 404 conveying chain; 405 transmission motor; 406 driving chain; 407 output shaft; 408 main driving sprocket; 409 main conveying sprocket; 4010 slave conveying sprocket; 4011 conveying shaft; 4012 slave driving sprocket; 4013 guide plate; 5 cooling fan; 501 air outlet duct; 502 return air duct; 503 first induced draft fan; 6 hot air fan; 601 hot air duct; 7 exhaust gas scrubber; 701 exhaust duct; 702 second induced draft fan; 703 chimney; 8 air distribution duct; 9 soft door curtain. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model 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 cannot be understood as a limitation on the utility model.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] See also Figures 1 to 5 In one embodiment, an automatic drying device for electrolytic manganese cathode plates is disclosed, comprising a drying box 1, wherein a horizontal partition 2 and a vertical partition 3 are arranged inside the drying box 1. Specifically, the horizontal partition 2 is horizontally arranged in the middle of the drying box 1 to divide the inside of the drying box 1 into two layers, an upper layer and a lower layer. The vertical partition 3 is vertically arranged in the middle of the drying box 1 and is perpendicular to the horizontal partition 2 to divide the inside of the drying box 1 into left and right sides. The horizontal partition 2 and the vertical partition 3 are cross-connected to divide the inside of the drying box 1 into a first preheating zone 101, a second preheating zone 102, a heating and drying zone 103 and a cooling zone 104. There is a conveyor chain assembly 4, which is used to convey the cathode plates to be dried through the first preheating zone 101, the second preheating zone 102, the heating and drying zone 103 and the cooling zone 104 in sequence. A cold air blower 5 and a hot air blower 6 are respectively provided beside the drying box body 1. The cold air blower 5 is connected to the cooling zone 104 through an air outlet duct 501, the cooling zone 104 is connected to the first preheating zone 101 through a return air duct 502, the hot air blower 6 is connected to the heating and drying zone 103 through a hot air duct 601, and a plurality of first ventilation holes 201 connected to the second preheating zone 102 above are provided in the portion of the horizontal partition 2 located at the top of the heating and drying zone 103. In the present embodiment, after the cathode plate after electrolysis is passivated and cleaned, it enters the first preheating zone 101, the second preheating zone 102, the heating and drying zone 103 and the cooling zone 104 in sequence under the conveyance of the conveying chain assembly 4. During the conveyance, the cold air blower 5 blows cold air into the cooling zone 104 to cool the cathode plate that has just come out of the heating and drying zone 103. The cooling air is heated and enters the first preheating zone 101 through the return air duct 502 to perform the first preheating on the cathode plate that has just entered the drying device, so as to make full use of the heat generated when cooling the cathode plate. The hot air blower 6 also blows hot air into the heating and drying zone 103 to perform hot air drying on the cathode plate that has passed through the heating and drying zone 103. During the drying process, the hot air rises through the first ventilation hole 201 and enters the second preheating zone 102 for the second preheating, which makes full use of the heat, effectively improves the thermal efficiency of the drying equipment, reduces energy waste, and reduces production costs. In addition, the automatic drying equipment for electrolytic manganese cathode plates has a simple and compact structure, which effectively reduces the occupied space.

[0027] In a specific example, a second ventilation hole 105 and a third ventilation hole 106 are respectively provided on the two side walls of the drying box body 1 corresponding to the cooling zone 104. The second ventilation hole 105 and the third ventilation hole 106 are both long holes. The cooling air enters the cooling zone 104 from the second ventilation hole 105 and comes out from the third ventilation hole 106. An air outlet hood 107 is provided at the second ventilation hole 105. The air outlet hood 107 is connected to one end of the air outlet pipe 501. The air outlet hood 107 can increase the air outlet area and evenly deliver the cooling air into the cooling zone 104. The third ventilation hole 106 is provided with a return air hood 1 08, the return air hood 108 is connected with one end of the return air duct 502, and a fourth ventilation hole 109 is provided on the side wall of the drying box 1 corresponding to the first preheating zone 101, and an air inlet hood 1010 is provided at the fourth ventilation hole 109, and the air inlet hood 1010 is connected with the other end of the return air duct 502. The return air hood 108 can gather together the wind with a certain amount of heat after being blown to the cathode plate for cooling and evenly enter the first preheating zone 101 through the return air duct 502, the air inlet hood 1010 and the fourth ventilation hole 109, so as to perform the first preheating and drying on the cathode plate that has just entered the drying equipment.

[0028] In a specific example, the return air duct 502 is connected to a first induced draft fan 503. The first induced draft fan 503 extracts hot air in the cooling zone 104 and sends it into the first preheating zone 101, thereby increasing the flow speed and improving the cooling and first preheating effects.

[0029] In a preferred embodiment, a tail gas washing tower 7 is provided beside the drying box 1, and the tail gas washing tower 7 is respectively connected to the first preheating zone 101 and the second preheating zone 102. The tail gas and waste gas generated after the first preheating and the second preheating enter the tail gas washing tower 7 for desulfurization and purification before being discharged, so as to avoid pollutants in the tail gas and cause environmental pollution.

[0030] In a specific example, a fifth ventilation hole 1011 is provided on the top wall of the drying box body 1 corresponding to the first preheating zone 101, a sixth ventilation hole 1012 is provided on the top wall of the drying box body 1 corresponding to the second preheating zone 102, a first exhaust hood 1013 is provided at the fifth ventilation hole 1011, and a second exhaust hood 1014 is provided at the sixth ventilation hole 1012. The first exhaust hood 1013 and the second exhaust hood 1014 are both connected to the exhaust washing tower 7 through the exhaust pipe 1015, and the exhaust washing tower 7 is connected to the exhaust pipe 1016. The air pipe 701 is connected to the exhaust pipe 701 with a second induced draft fan 702, and the outlet of the second induced draft fan 702 is connected to the chimney 703. The exhaust gas generated by the first preheating zone 101 and the second preheating zone 102 is collected and merged by the first exhaust hood 1013 and the second exhaust hood 1014 respectively, and then enters the exhaust gas washing tower 7 through the exhaust pipe 1015 for washing treatment. The treated exhaust gas is extracted by the second induced draft fan 702 and discharged into the external atmospheric environment through the exhaust pipe 701 and the chimney 703.

[0031] In a preferred embodiment, the bottom surface of the horizontal partition 2 corresponding to the first preheating zone 101 is inclined toward the side away from the fourth ventilation hole 109, and a water collecting tank 201 is provided at the inclined bottom end. The water collecting tank 201 is connected to the exhaust pipe 1015 through a drain pipe 202. When the cathode plate just enters the first preheating zone 101, due to the large amount of moisture it carries, some water droplets may drip to the bottom during the first preheating. After dripping to the bottom, the water droplets flow into the water collecting tank 201 under the action of gravity, and are discharged from the drying box 1 from the drain pipe 202 into the exhaust pipe 1015 and are sent to the exhaust gas washing tower 7 for washing and purification.

[0032] In a preferred embodiment, an air distribution duct 8 is provided at the bottom of the heating and drying area 103, and the air distribution duct 8 is evenly laid at the bottom of the heating and drying area 103, and the air distribution duct 8 is connected to the hot air duct 601. The hot air blown by the hot air blower 6 enters the heating and drying area 103 through the hot air duct 601, and then blows the hot air evenly upward through the air distribution duct 8 to dry the cathode plate, further improving the drying efficiency.

[0033] In a specific example, a drying inlet 1016 and a drying outlet 1017 are provided on the side wall at the left end of the drying box 1. The drying inlet 1016 corresponds to the first preheating zone 101, and the drying outlet 1017 corresponds to the cooling zone 104. The drying inlet 1016 is at the top, and the drying outlet 1017 is at the bottom. The cathode plate to be dried enters the drying box 1 from the drying inlet 1016, and comes out from the drying outlet 1017 after drying. A first through port 301 and a second through port 302 are provided on the vertical partition 3. The first through port 301 is used to connect the first preheating zone 101 to the cooling zone 104. 1 and the second preheating zone 102, the second through port 302 is used to connect the heating and drying zone 103 and the cooling zone 104, and soft door curtains 9 are provided on the drying inlet 1016, the drying outlet 1017, the first through port 301 and the second through port 302. The soft door curtains 9 are used for isolation to reduce the mixing of drying airflows in various areas during drying operation, and at the same time, the transmission of the cathode plate will not be hindered. Of course, air curtains can also be installed above the drying inlet 1016, the drying outlet 1017, the first through port 301 and the second through port 302 for isolation to prevent hot air from flowing out.

[0034] In a specific example, the conveyor chain assembly 4 includes an upper horizontal conveyor 401, a lower horizontal conveyor 402 and a vertical conveyor 403. The upper horizontal conveyor 401 and the lower horizontal conveyor 402 have opposite conveying directions. The vertical conveyor 403 is arranged at one end of the drying box 1 and corresponds to the end end of the upper horizontal conveyor 401 and the start end of the lower horizontal conveyor 402. The cathode plate to be dried is conveyed to the right by the upper horizontal conveyor 401, passes through the first preheating zone 101 and the second preheating zone 102 in sequence, and then is conveyed downward by the vertical conveyor 403 into the lower horizontal conveyor 402 to rotate and convey to the left, passes through the heating and drying zone 103 and the cooling zone 104 in sequence. The upper and lower layers are arranged to reduce the space occupied by the factory.

[0035] In a specific example, the upper horizontal conveyor 401, the lower horizontal conveyor 402 and the vertical conveyor 403 all include two sets of conveyor chains 404, a transmission motor 405 and a drive chain 406 arranged in parallel. The transmission motor 405 adopts a double-axis motor, and the transmission motor 405 is fixedly arranged on the top of the drying box body 1. The two sets of conveyor chains 404 of the upper horizontal conveyor 401 are arranged on the front and rear sides of the upper layer in the drying box body 1, passing through the first preheating zone 101 and the second preheating zone 102. The two sets of conveyor chains 404 of the lower horizontal conveyor 402 are arranged in the drying box body 1. The front and rear sides of the lower layer in the drying box 1 penetrate the heating and drying zone 103 and the cooling zone 104. Two groups of conveying chains 404 of the vertical conveying member 403 are arranged at the front and rear ends of the right side of the drying box 1, respectively corresponding to the upper horizontal conveying member 401 and the lower horizontal conveying member 402. The cathode plate is automatically dropped onto the vertical conveying member 403 after being conveyed to the right by the upper horizontal conveying member 401 to the end, and then conveyed downward and dropped onto the starting end of the lower horizontal conveying member 402 to the left. Guide plates can be arranged at the end end of the upper horizontal conveying member 401 and the starting end of the lower horizontal conveying member 402. 4013, the cathode plate is guided by the guide plate 4013 to fall from the upper horizontal conveyor 401 to the vertical conveyor 403, or from the vertical conveyor 403 to the lower horizontal conveyor 402 for further conveying, the ends of the output shafts 407 on both sides of the transmission motor 405 are provided with main driving sprockets 408, the two sets of transmission chains 404 are respectively sleeved on the main transmission sprocket 409 and the slave transmission sprocket 4010, the main transmission sprocket 409 and the slave transmission sprocket 4010 are respectively installed at the two ends of the support rod, the main transmission sprocket 409 is provided with a transmission shaft 4011, and the transmission shaft 4011 is provided on the transmission shaft 4012. 11 is provided with a slave drive sprocket 4012, which is coaxially fixed with the main transmission sprocket 409, and the driving chain 406 is sleeved on the main driving sprocket 408 and the slave drive sprocket 4012, and the main driving sprocket 408 is driven by the transmission motor 405, and the main driving sprocket 408 drives the main transmission sprocket 409 to rotate through the driving chain 406, and the transmission shaft 4011 synchronously drives the main transmission sprocket 409 to rotate and then drives the two groups of transmission chains 404 on both sides to transmit synchronously, so that the cathode plate mounted thereon is transmitted in the drying box body 1 for automatic drying.

[0036] The above content is a further detailed description of the utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the scope of protection of the utility model. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. An automatic drying device for electrolytic manganese cathode plates, comprising a drying box, characterized in that: The drying box body is provided with horizontal partitions and vertical partitions inside, which are used to divide the interior of the drying box body into a first preheating zone, a second preheating zone, a heating and drying zone and a cooling zone. The drying box body is provided with a conveying chain assembly, which is used to convey the cathode plate to be dried through the first preheating zone, the second preheating zone, the heating and drying zone and the cooling zone in sequence. A cold air blower and a hot air blower are respectively provided beside the drying box body. The cold air blower is connected to the cooling zone through an air outlet duct, and the cooling zone is connected to the first preheating zone through a return air duct. The hot air blower is connected to the heating and drying zone through a hot air duct. The part of the horizontal partition located at the top of the heating and drying zone is provided with a plurality of first ventilation holes connected to the second preheating zone above.

2. The automatic drying equipment for electrolytic manganese cathode plates according to claim 1, characterized in that: The drying box body is provided with a second ventilation hole and a third ventilation hole on the two side walls opposite to the cooling zone, respectively; an air outlet hood is provided at the second ventilation hole, and the air outlet hood is communicated with one end of the air outlet duct; a return air hood is provided at the third ventilation hole, and the return air hood is communicated with one end of the return air duct; a fourth ventilation hole is provided at the side wall of the drying box body corresponding to the first preheating zone, and an air inlet hood is provided at the fourth ventilation hole, and the air inlet hood is communicated with the other end of the return air duct.

3. The automatic drying equipment for electrolytic manganese cathode plates according to claim 2, characterized in that: The return air duct is connected to a first induced draft fan.

4. The automatic drying equipment for electrolytic manganese cathode plates according to claim 3, characterized in that: A tail gas washing tower is arranged beside the drying box body, and the tail gas washing tower is respectively connected with the first preheating zone and the second preheating zone.

5. The automatic drying equipment for electrolytic manganese cathode plates according to claim 4, characterized in that: A fifth ventilation hole is provided on the top wall of the drying box body corresponding to the first preheating zone, and a sixth ventilation hole is provided on the top wall of the drying box body corresponding to the second preheating zone. A first exhaust hood is provided at the fifth ventilation hole, and a second exhaust hood is provided at the sixth ventilation hole. Both the first exhaust hood and the second exhaust hood are connected to the exhaust gas washing tower through an exhaust pipe. The exhaust gas washing tower is connected to an exhaust pipe, and the exhaust pipe is connected to a second induced draft fan, and an outlet of the second induced draft fan is connected to the chimney.

6. The automatic drying equipment for electrolytic manganese cathode plates according to claim 5, characterized in that: The bottom surface of the horizontal partition corresponding to the first preheating zone is inclined toward the side away from the fourth ventilation hole, and a water collecting trough is provided at the inclined bottom end, and the water collecting trough is connected to the tail gas pipe through a drainage pipe.

7. The automatic drying equipment for electrolytic manganese cathode plates according to claim 1, characterized in that: An air distribution pipe is provided at the bottom of the heating and drying area, and the air distribution pipe is connected to the hot air pipe.

8. The automatic drying equipment for electrolytic manganese cathode plates according to claim 1, characterized in that: A drying inlet and a drying outlet are provided on the side wall of the drying box body, a first through opening and a second through opening are provided on the vertical partition plate, and soft door curtains are provided on the drying inlet, the drying outlet, the first through opening and the second through opening.

9. The automatic drying equipment for electrolytic manganese cathode plates according to any one of claims 1 to 8, characterized in that :The conveying chain assembly includes an upper horizontal conveying member, a lower horizontal conveying member and a vertical conveying member. The conveying directions of the upper horizontal conveying member and the lower horizontal conveying member are opposite. The vertical conveying member is arranged at one end of the drying box body and corresponds to the end end of the upper horizontal conveying member and the starting end of the lower horizontal conveying member respectively.

10. The automatic drying equipment for electrolytic manganese cathode plates according to claim 9, characterized in that: The upper horizontal conveying member, the lower horizontal conveying member and the vertical conveying member all include two sets of conveying chains, a transmission motor and a driving chain arranged in parallel. The transmission motor adopts a double-axis motor. A main driving sprocket is provided on the output shaft of the transmission motor. The two sets of conveying chains are respectively mounted on the main conveying sprocket and the slave conveying sprocket. A conveying shaft is provided on the main conveying sprocket. A slave driving sprocket is provided on the conveying shaft. The driving chain is mounted on the main driving sprocket and the slave driving sprocket.

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