Dehydration device and water circulation system

Abstract

The utility model discloses a dehydration device and a water circulation system. The dewatering device comprises a magnetic separator, the magnetic separator comprises a first feeding groove, a roller, a first driving component, a scraper, a first magnetic system and a first discharging groove, the lower portion of the roller is arranged in the first feeding groove, the first magnetic system is rotationally connected with the inner wall of the roller, the first magnetic system is provided with a first notch facing the scraper, and the scraper abuts against the surface of the roller and extends to the first discharging groove. The first driving part is in driving connection with the roller; the filter comprises a second feeding groove, a filter cartridge, a second driving part, a second discharging groove and a water outlet groove, the second feeding groove is communicated with the first discharging groove, the upper portion of the filter cartridge extends into the second feeding groove, the second discharging groove and the water outlet groove are located on the lower portion of the filter cartridge, and the second driving part is in driving connection with the filter cartridge. The water circulation system comprises water atomization process equipment and a dehydration device. The dehydration device can be suitable for material dehydration after a water atomization pulverizing process, and the dehydration effect is good.

Description

Technical Field

[0001] This utility model relates to the field of dehydration equipment technology, and in particular to dehydration devices and water circulation systems. Background Technology

[0002] Nickel-iron alloy is a major nickel raw material in the lithium battery industry. To ensure efficient leaching, the nickel-iron alloy needs to be pre-treated by crushing and pulverizing to increase the specific surface area of ​​the raw material and thus improve leaching efficiency. Compared with other metal powder preparation methods, atomization has high production efficiency, good versatility, and can achieve large-scale, low-cost production. Among them, water atomization has a high cooling rate, low cost and readily available atomizing medium, and low energy consumption to achieve the required flow rate in industrial production, making it the lowest-cost atomization technology.

[0003] To facilitate the downstream leaching process, the nickel-iron alloy powder slurry produced by water atomization powdering needs to be dehydrated. However, existing filter presses have poor independence and are heavily reliant on the stability of the upstream process. Disassembly costs are high, and if used for downstream processes like nickel-iron alloy water atomization powdering, which have poor stability and low tolerance for errors, the filter press may fail to reach full capacity during feeding due to abnormal termination of the upstream process, making disassembly impossible. Even after the upstream process resumes, the filter press's remaining capacity is insufficient due to the undisassembled plates, limiting upstream output. This mutual interference between the filter press and the upstream process hinders smooth production, resulting in suboptimal dehydration of the nickel-iron alloy powder slurry and negatively impacting the downstream leaching process. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a dehydration device and a water circulation system.

[0005] The solution to the technical problem of this utility model is:

[0006] Firstly, a dehydration device is proposed, comprising:

[0007] A magnetic separator includes a first feed trough, a drum, a first drive component, a scraper, a first magnetic system, and a first discharge trough. The lower part of the drum is disposed in the first feed trough. The first magnetic system is rotatably connected to the inner wall of the drum. The first magnetic system has a first notch facing the scraper. The scraper abuts against the surface of the drum and extends to the first discharge trough. The first drive component is drivenly connected to the drum.

[0008] The filter includes a second feed trough, a filter cartridge, a second drive unit, a second discharge trough, and a water outlet trough. The second feed trough is connected to the first discharge trough. The upper part of the filter cartridge extends into the second feed trough. The second discharge trough and the water outlet trough are located below the filter cartridge. The second drive unit is drivenly connected to the filter cartridge.

[0009] This invention has at least the following beneficial effects: The slurry is first subjected to magnetic separation by a magnetic separator. The ferromagnetic material rotates with the drum and flows out into the first discharge trough under the action of the scraper. The magnetic separator initially separates the ferromagnetic material from the water. The slurry then enters a filter for further filtration. The material entering the filter is dewatered by the filter cylinder and discharged from the second discharge trough, which can greatly improve the dewatering effect of the slurry. Moreover, there is no need to disassemble the plates during the entire process. The material is dewatered in an open environment, which can solve the problem of mutual influence and restriction between the front-end process. In particular, it can be applied to the back end of the water atomization process in water atomization powder making. Even when dewatering nickel-iron alloy powder slurry, it can avoid the impact of poor stability and low fault tolerance of the front-end process, and can also avoid the problem of insufficient capacity limiting the output of the front-end process.

[0010] As a further improvement to the above technical solution, the magnetic separator also includes a buffer plate, which is connected to the bottom of the first feed trough. The first feed trough is provided with a feed inlet, and the buffer plate is located between the feed inlet and the roller.

[0011] As a further improvement to the above technical solution, the filter also includes a second magnetic system, an air blowing component, and a water pumping component. The filter cylinder has at least one filter chamber. The inner wall of the filter cylinder is rotatably connected to the second magnetic system. When the filter cylinder rotates, any one of the filter chambers passes through the second feed trough, the second discharge trough, and the water outlet trough in sequence. The second magnetic system has a second notch facing the second discharge trough. The air outlet of the air blowing component is connected to the filter chamber entering the second discharge trough, the filter chamber entering the second feed trough, and the filter chamber entering the water outlet trough. The water inlet of the water pumping component is connected to the filter chamber located between the second feed trough and the second discharge trough. The water outlet of the water pumping component is connected to the water outlet trough.

[0012] As a further improvement to the above technical solution, the water pumping component includes a vacuum pump, a distributing head, and an automatic drainer. The automatic drainer has a first water tank, a second water tank, and a third water tank. The inlet end of the first water tank is connected to the filter chamber, and the inlet end of the vacuum pump is connected to the first water tank. The outlets of the second water tank and the third water tank are respectively connected to the water outlet trough. The distributing head includes a fixed layer and a rotating layer. The rotating layer is rotatably connected to the fixed layer. The fixed layer has four holes, which are respectively connected to the first water tank, the second water tank, the third water tank, and the atmosphere. The rotating layer has two grooves, which are respectively used to connect two adjacent holes, so that one of the second water tank or the third water tank is connected to the atmosphere, and the other of the second water tank or the third water tank is connected to the first water tank.

[0013] As a further improvement to the above technical solution, the outlet end of the vacuum pump is connected to the inlet end of the air blowing component.

[0014] As a further improvement to the above technical solution, the dehydration device further includes:

[0015] A sedimentation tank, wherein the inlet end of the sedimentation tank is located below the outlet trough and is connected to the outlet end of the outlet trough and the first feed trough, and the bottom of the sedimentation tank is connected to the inlet end of the first feed trough.

[0016] As a further improvement to the above technical solution, the inner cavity of the sedimentation tank is provided with at least one first longitudinal baffle. The first longitudinal baffle is used to divide the inner cavity of the sedimentation tank into at least two flow regions. The bottoms of the flow regions are interconnected. The upper part of the first longitudinal baffle is provided with a first overflow port. The first overflow ports of two adjacent first longitudinal baffles are arranged in a staggered manner. The fluid outlet of the upper flow region and the fluid inlet of the lower flow region are connected through the first overflow port. The flow directions of the fluid in the two adjacent flow regions are opposite.

[0017] As a further improvement to the above technical solution, the inlet end of the first-stage flow area is the inlet end of the sedimentation tank, and the inner cavity of the sedimentation tank is also provided with a first water inlet baffle, which is located at the inlet end of the first-stage flow area.

[0018] As a further improvement to the above technical solution, the dehydration device further includes:

[0019] An overflow tank is provided with at least one second longitudinal baffle in its inner cavity. The second longitudinal baffle is used to divide the inner cavity of the overflow tank into at least two flow guiding areas. The bottoms of the flow guiding areas are interconnected. The upper part of the second longitudinal baffle is provided with a second overflow port. The second overflow ports of two adjacent second longitudinal baffles are arranged in a staggered manner. The fluid outlet of the upper flow guiding area and the fluid inlet of the lower flow guiding area are connected through the second overflow port. The flow direction of the fluid in the two adjacent flow guiding areas is opposite. The fluid inlet of the first flow guiding area is the inlet of the overflow tank. The fluid inlet of the first flow guiding area is connected to the upper part of the sedimentation tank.

[0020] The ground pool has an overflow weir in its inner cavity, which is used to divide the inner cavity of the ground pool into a pre-settling zone and a cold water zone. The pre-settling zone is connected to the fluid outlet of the end of the guiding area. The upper end of the overflow weir has a third overflow port, and the pre-settling zone and the cold water zone are connected through the third overflow port.

[0021] As a further improvement to the above technical solution, the inner cavity of the overflow pool is also provided with a second water inlet baffle, which is located at the inlet end of the first-stage flow guiding area.

[0022] As a further improvement to the above technical solution, the inner cavity of the overflow pool is also provided with an inclined baffle. The inclined baffle is located in at least one of the front-end flow guiding areas and is connected to the second longitudinal baffle. The inclined baffle has an angle with the flow direction of the fluid in the flow guiding area.

[0023] In a second aspect, a water circulation system is proposed, comprising a water atomization process device and a dehydration device as described in any of the technical solutions in the first aspect, wherein the outlet end of the water atomization process device is connected to the inlet end of the first feed trough. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the dehydration device according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the magnetic separator according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the filter according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the sedimentation tank according to an embodiment of the present invention;

[0029] Figure 5 This is a top view of the sedimentation tank according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the overflow pool according to an embodiment of the present invention;

[0031] Figure 7 This is a top view of the overflow pool according to an embodiment of the present utility model;

[0032] Figure 8 This is a side view of the overflow pool according to an embodiment of the present utility model;

[0033] Figure 9 This is a schematic diagram of the structure of the ground pool according to an embodiment of the present utility model;

[0034] Figure 10 This is a schematic diagram of the overall structure of the water circulation system according to an embodiment of the present invention.

[0035] Reference numerals: 100, magnetic separator; 110, first feed trough; 111, feed inlet; 112, water outlet; 120, drum; 130, first drive unit; 140, scraper; 150, first discharge trough; 151, discharge outlet; 160, buffer plate; 200, filter; 210, second feed trough; 220, filter cylinder; 221, filter chamber; 230, second drive unit; 240, second discharge trough; 241, water outlet trough; 250 300. Distribution head; 310. Sedimentation tank; 320. First longitudinal baffle; 330. First inlet baffle; 400. Flow zone; 410. Overflow pool; 411. Second longitudinal baffle; 412. Guide zone; 413. Second overflow port; 420. Second inlet baffle; 430. Inclined baffle; 500. Ground pool; 510. Pre-sedimentation zone; 520. Cold water zone; 531. Overflow weir; 532. Third overflow port; 600. Water atomization process equipment. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. The various technical features of this utility model can be combined interactively without contradicting each other.

[0041] Firstly, this utility model provides a dewatering device that can solve the problem of mutual influence and constraint between existing filter presses and front-end processes. In particular, it can be applied to the back end of the water atomization process in water atomization powder making. Even when dewatering nickel-iron alloy powder slurry, it can avoid the impact of poor stability and low fault tolerance of the front-end process, and also avoid the problem of insufficient capacity limiting the output of the front-end process.

[0042] In this embodiment, refer to Figure 1 The dewatering device includes a magnetic separator 100 and a filter 200, which can magnetically concentrate the slurry before filtering and dewatering.

[0043] Reference Figure 2 The magnetic separator 100 includes a first feed trough 110, a drum 120, a first drive component 130, a scraper 140, a first magnetic system, and a first discharge trough 150.

[0044] The first magnetic system is disposed within the roller 120, which rotates relative to the first magnetic system. The first magnetic system has a first notch. It is understood that the first magnetic system enables the surface of the roller 120 to become magnetic. Specifically, when a position on the roller 120 rotates to the magnetic area formed by the first magnetic system, the surface of the roller 120 becomes magnetic and can attract ferromagnetic materials, such as nickel-iron alloys. When a position on the roller 120 rotates to the position corresponding to the first notch of the first magnetic system, that position is in the non-magnetic area, the magnetism on the surface of the roller 120 disappears, which facilitates the detachment of ferromagnetic materials originally adsorbed on the surface of the roller 120.

[0045] In this embodiment, the lower part of the roller 120 is disposed in the first feed trough 110, and the first feed trough 110 is provided with a feed inlet 111 and a water outlet 112. The water outlet 112 is disposed at the bottom of the first feed trough 110, which is the outlet end of the first feed trough 110; the feed inlet 111 is disposed at the upper part of the first feed trough 110, which is the inlet end of the first feed trough 110.

[0046] One end of the scraper 140 abuts against the surface of the roller 120, while the other end extends toward the first discharge chute 150. The scraper 140 is positioned at the location corresponding to the first notch, i.e., the first notch faces the scraper 140.

[0047] It is understood that the first driving component 130 is drivenly connected to the roller 120, and the roller 120 can rotate under the driving action of the first driving component 130. In this embodiment, the roller 120 rotates in a clockwise direction, and the feed inlet 111, scraper 140, and water outlet 112 are arranged sequentially in a clockwise direction, as shown in the figure. Figure 2 The drum 120 rotates under the drive of the first drive component 130. The surface of the drum 120 located in the first feed trough 110 can adsorb the ferromagnetic material in the first feed trough 110. The ferromagnetic material can rotate with the drum 120. When it reaches the position of the scraper 140, the ferromagnetic material is scraped off the surface of the drum 120 by the scraper 140 and flows along the extension direction of the scraper 140 into the first discharge trough 150, realizing the first dehydration and concentration.

[0048] The lower end of the first discharge trough 150 is the discharge port 151. After the material scraped down from the scraper 140 into the first discharge trough 150 enters the first discharge trough 150, it flows to the discharge port 151 under its own gravity and is discharged from the magnetic separator 100.

[0049] Reference Figure 3 The filter 200 includes a second feed trough 210, a filter cartridge 220, a second drive component 230, a second discharge trough 240, and a water discharge trough 241.

[0050] The inlet end of the second feed trough 210 is located below the outlet 151 of the first discharge trough 150. The slurry that has undergone the first dewatering and concentration in the magnetic separator 100 enters the second feed trough 210. The second feed trough 210 is located above the filter cartridge 220, and part of the filter cartridge 220 extends into the second feed trough 210 through the outlet of the second feed trough 210, so that the slurry in the second feed trough 210 can enter the filter cartridge 220 for dewatering.

[0051] The second discharge trough 240 and the water outlet trough 241 are respectively disposed below the filter cylinder 220, and are separated from each other. The second driving component 230 is drivenly connected to the filter cylinder 220. Under the driving action of the second driving component 230, the filter cylinder 220 can rotate relative to the second feed trough 210, the second discharge trough 240 and the water outlet trough 241. In this embodiment, the rotation direction of the filter cylinder 220 is clockwise, and the second feed trough 210, the second discharge trough 240 and the water outlet trough 241 are arranged sequentially in a clockwise direction, that is, a certain position on the filter cylinder 220 can pass through the second feed trough 210, the second discharge trough 240 and the water outlet trough 241 in sequence. Figure 3 .

[0052] When the filter cylinder 220 rotates to the position of the second feed trough 210, the slurry can enter the filter cylinder 220 for dewatering. As the filter cylinder 220 continues to rotate, when the material rotates to the second discharge trough 240, the material can be removed from the filter cylinder 220, and the water removed from the slurry is discharged into the water outlet trough 241.

[0053] It is understandable that the magnetization intensity of ferromagnetic materials such as nickel-iron alloys increases with the strength of the external magnetic field, and they can be magnetized to saturation under a very small magnetic field. In this embodiment, the characteristics of ferromagnetic materials are utilized, and a magnetic separator 100 and a filter 200 are used in combination to dehydrate ferromagnetic materials such as nickel-iron alloys. This can overcome the problem of poor adaptability of existing dehydration equipment to water atomization powdering processes.

[0054] The dewatering device in this embodiment has good independence. Since the magnetic separator 100 and the filter 200 are in an open dewatering environment to dewater the material, it will not affect the water atomization process at the front end. Furthermore, abnormalities in the front end process will not affect the dewatering operation of the dewatering device.

[0055] In addition, since the slurry is magnetically concentrated in the magnetic separator 100 before entering the filter 200, the dewatering efficiency and dewatering effect of the filter 200 can be further improved.

[0056] Understandably, since the rotation direction of the drum 120 is the direction in which it passes through the feed inlet 111, scraper 140, and outlet 112 in sequence, the direction in which the material flows from the feed inlet 111 to the outlet 112 after entering the first feed trough 110 is opposite to the rotation direction of the drum 120. Therefore, the first feed trough 110 is a counter-current trough. This arrangement allows for more thorough contact between the material entering the first feed trough 110 and the surface of the drum 120, improving the magnetic separation and concentration capacity of the magnetic separator 100.

[0057] It is understandable that the lower part of the roller 120 has a certain immersion depth in the first feed trough 110 to ensure that the material can fully contact the surface of the roller 120.

[0058] In some embodiments, the magnetic separator 100 further includes a buffer plate 160, which is disposed in the first feed trough 110. The buffer plate 160 is connected to the bottom of the first feed trough 110 and is located between the feed inlet 111 and the roller 120, for buffering the material entering the first feed trough 110.

[0059] It is understandable that setting a buffer plate 160 in the first feed trough 110 can reduce the flow rate of the material entering the first feed trough 110, so that the slurry is fed into the first feed trough 110 more evenly, and avoid the slurry flow rate being too fast and the impact force being too large, which would affect the magnetic separation operation.

[0060] In this embodiment, the magnetic separator 100 also includes a first frame, which provides installation space for the first feed trough 110, the first discharge trough 150, the first drive component 130, and the first magnetic system, and can raise the magnetic separator 100 to a certain height to ensure that the inlet end of the filter 200 is lower than the outlet end of the first discharge trough 150, thereby ensuring that the concentrated slurry and filtrate of the magnetic separator 100 can be discharged from the equipment by their own gravity.

[0061] In some embodiments, the magnetic separator 100 further includes a slurry pump, the outlet of which is connected to the feed inlet 111, enabling slurry from the upstream process to be pumped into the first feed trough 110.

[0062] Reference Figure 3 In some embodiments, the filter 200 is a permanent magnet vacuum filter 200, which also includes a second magnetic system, an air blowing component, and a water pumping component. The second magnetic system is rotatably connected to the inner wall of the filter cartridge 220. The second magnetic system has a second notch facing the second discharge trough 240. The second magnetic system allows a portion of the surface of the filter cartridge 220 to be magnetic. In this embodiment, the second magnetic system is concentrated at the location of the second feed trough 210, forming an adsorption zone in this area. This adsorption zone extends into the second feed trough 210 and can adsorb the slurry located within it. At the location of the second discharge trough 240, a desiccation zone is formed on the surface of the filter cartridge 220. In this desiccation zone, the filter cartridge 220 is non-magnetic, allowing material entering the desiccation zone to be removed from the filter cartridge 220 and fall into the second discharge trough 240. The upper part of the filter cartridge 220 also forms a dewatering zone, which is located between the adsorption zone and the dewatering zone and is used to dewater the slurry.

[0063] Understandably, since the second feed trough 210 is located at the top of the filter cylinder 220 and below the first discharge trough 150, the slurry entering the second feed trough 210 is adsorbed onto the filter cloth of the filter cylinder 220 under the action of magnetic force and the gravity of the particles themselves to form a filter cake.

[0064] In this embodiment, when the filter cartridge 220 rotates, a certain point on the filter cartridge 220 sequentially passes through the adsorption zone, the dewatering zone, and the discharge zone. At least one filter chamber 221 is provided inside the filter cartridge 220, arranged around the central circumference of the filter cartridge 220. When the filter cartridge 220 rotates, any filter chamber 221 sequentially passes through the second feed trough 210, the second discharge trough 240, and the water discharge trough 241. The air outlet of the air blowing component is connected to the filter chamber 221 entering the second discharge trough 240 and the filter chamber 221 entering the second feed trough 210, that is, the air outlet of the air blowing component is connected to the filter chambers 221 in the adsorption zone and the discharge zone, respectively. The water inlet of the water pumping component is connected to the filter chamber 221 located between the second feed trough 210 and the second discharge trough 240, that is, connected to the filter chamber 221 in the dewatering zone.

[0065] Understandably, the air blowing component can blow air into the filter chamber 221 entering the adsorption zone. The blown air can separate the slurry into particle layers to facilitate subsequent dewatering. The water pumping component can pump water from the filter chamber 221 in the dewatering zone. The residual water in the filter cake is extracted into the water outlet tank 241 by the water pumping component, thereby achieving the purpose of dewatering. The air blowing component can also blow air into the filter chamber 221 entering the dewatering zone, causing the dewatered filter cake to fall from the filter chamber 221 into the second discharge tank 240.

[0066] In this embodiment, the vacuum pump is used as the vacuuming component.

[0067] In some embodiments, a steam-water separator is provided at the inlet end of the blowing component to separate the air vapor and water vapor entering the filter chamber 221, so as to avoid the increase of moisture in the filter cake.

[0068] In some embodiments, the filter cartridge 220 also has a cleaning zone located in the outlet tank 241. After the material is blown off by air into the second outlet tank 240 in the deslagging zone, the roller 120 continues to rotate, and the deslagging filter chamber 221 enters the cleaning zone for cleaning.

[0069] In some embodiments, cleaning is performed by alternating between air and water. The air outlet of the air blowing component is also connected to the filter chamber 221 facing the water outlet tank 241. The air blowing component can blow air into the filter chamber 221 located in the cleaning zone to achieve air washing. The air entering the filter chamber 221 in the cleaning zone can force the water in the filter chamber 221 to be blown out towards the water outlet tank 241, preventing the clogging of the filter cloth pores in the filter chamber 221, forming a better cleaning process, and preparing good conditions for the next material dewatering operation. In some embodiments, the water pumping component's water pumping outlet is connected to the filter chamber 221 located in the cleaning zone, and the water pumped out by the water pumping component can perform water washing on the filter chamber 221 in this area.

[0070] In some embodiments, the filter 200 further includes a second frame for mounting a second feed trough 210, a filter cartridge 220, a second drive component 230, a second discharge trough 240, and a water discharge trough 241.

[0071] In some embodiments, the water pumping component includes a vacuum pump, a dispensing head 250, and an automatic drainer. The automatic drainer is provided with a first water tank, a second water tank, and a third water tank. The inlet end of the first water tank is connected to the filter chamber 221 located in the dehydration zone, and the outlets of the second and third water tanks are respectively connected to the water outlet tank 241.

[0072] The inlet of the vacuum pump is connected to the first water tank, and the vacuum pump provides negative pressure to the first water tank. The dispensing head 250 includes a fixed layer and a rotating layer, which are rotatably connected to the fixed layer. The fixed layer has four holes, which communicate with the first water tank, the second water tank, the third water tank, and the atmosphere, respectively. Specifically, in this embodiment, the holes connecting the first water tank, the second water tank, the atmosphere, and the third water tank are arranged in a clockwise circular pattern. The rotating layer has two grooves, which are used to connect two adjacent holes, so that one of the second or third water tanks communicates with the atmosphere, while the other of the second or third water tank communicates with the first water tank.

[0073] Understandably, when the vacuum pump is operating, moisture in the slurry can be drawn into the first water tank. At this time, the automatic drainer cannot drain due to the negative pressure. When the second water tank is connected to the atmosphere, the third water tank and the first water tank are connected. Water in the first water tank flows to the third water tank, and the second water tank no longer maintains a negative pressure state, allowing water to be discharged into the outlet tank 241. When the third water tank is connected to the atmosphere, the second water tank and the first water tank are connected, and both are under negative pressure. Water in the first water tank flows to the second water tank, and the third water tank no longer maintains a negative pressure state, allowing water to be discharged into the outlet tank 241. This configuration allows the second and third water tanks to drain water alternately, ensuring negative pressure pumping while also draining any leaks.

[0074] In this embodiment, the outlet end of the vacuum pump is connected to the inlet end of the blowing component, and the gas extracted by the vacuum pump can be recycled in the blowing action of the blowing component, reducing the need for a power source. In this case, the blowing component can be a pipeline structure without a power source.

[0075] In this embodiment, four contact rods are provided on the outer side of the rotating layer of the dispensing head 250. The four contact rods are evenly arranged around the central circumference of the rotating layer. A lever is provided on the outer side of the filter cartridge 220. When the filter cartridge 220 rotates to the point where the lever contacts one of the contact rods, the lever can drive the contact rod to rotate, thereby causing the rotating layer to rotate relative to the fixed layer. This achieves the effect of automatically changing the relative position of the grooves and holes, and automatically realizing the effect of automatic alternating drainage of the second and third water tanks.

[0076] In some embodiments, refer to Figure 1 The dewatering device also includes a sedimentation tank 300. The inlet end of the sedimentation tank 300 is located below the outlet tank 241. The outlet 112 of the first feed tank 110 and the outlet tank 241 are respectively connected to the inlet end of the sedimentation tank 300. The filtrate flowing out of the outlet 112 and the filtrate flowing out of the outlet tank 241 can both enter the sedimentation tank 300 for sedimentation, so as to obtain water that can be reused in the future, improve the utilization rate of water resources, and be more environmentally friendly and energy-saving.

[0077] In some embodiments, the bottom of the settling tank 300 is connected to the feed inlet 111. The material obtained after settling in the settling tank 300 can be re-entered into the feed inlet 111 for re-magnetic separation, which is beneficial to improving the metal recovery rate.

[0078] In some embodiments, a return pump is provided between the bottom of the sedimentation tank 300 and the feed inlet 111, which can provide power for the solid particles obtained after sedimentation to return to the first feed trough 110.

[0079] In some embodiments, refer to Figure 4 and Figure 5 The sedimentation tank 300 has at least one first longitudinal baffle 310 in its inner cavity. The first longitudinal baffle 310 is used to divide the inner cavity of the sedimentation tank 300 into at least two flow regions 330. The bottoms of each flow region 330 are connected to each other. The first longitudinal baffle 310 has a first overflow port at its upper end. The fluid outlet of the upper flow region 330 and the fluid inlet of the lower flow region 330 are connected through the first overflow port. It can be understood that the first overflow ports of two adjacent first longitudinal baffles 310 are arranged in a staggered manner, so that the flow direction of the fluid in the two adjacent flow regions 330 is opposite.

[0080] In this embodiment, three first longitudinal baffles 310 are provided, which divide the inner cavity of the sedimentation tank 300 into four flow regions 330. The inlet end of the sedimentation tank 300 is located at the front end of the first flow region 330, that is, the inlet end of the first flow region 330 is the inlet end of the sedimentation tank 300. After the filtrate enters the sedimentation tank 300, the supernatant fluid and the sediment are separated into layers. The supernatant fluid in the upper layer flows backward along the first flow region 330 and exits from the rear end of the first flow region 330. The supernatant flows forward along the second-stage flow region 330 through the first overflow port and enters the third-stage flow region 330 through the first overflow port at the front end of the second-stage flow region 330. The supernatant flows backward along the third-stage flow region 330 and enters the fourth-stage flow region 330 through the first overflow port at the rear end of the third-stage flow region 330. The supernatant flows forward along the fourth-stage flow region 330 to the outlet of the sedimentation tank 300 located at the front end of the fourth-stage flow region 330.

[0081] Understandably, multi-stage sedimentation and a serpentine flow path can extend the fluid's flow path, ensuring that the supernatant fluid flowing to the outlet of sedimentation tank 300 is completely separated from the sediment, and that any metal particles mixed in the filtrate are completely precipitated. This reduces the moisture content of the material entering the first feed trough 110 through the bottom of sedimentation tank 300 and facilitates the subsequent reuse of the supernatant fluid.

[0082] In some embodiments, the inner cavity of the sedimentation tank 300 is further provided with a first water inlet baffle 320. The first water inlet baffle 320 is located at the inlet end of the first-stage flow region 330, which can slow down the water flow rate entering the sedimentation tank 300, so that the metal particles mixed in the filtrate are settled more completely.

[0083] In some embodiments, refer to Figure 1 The dewatering device also includes an overflow tank 400 and a ground tank 500.

[0084] Among them, reference Figure 6 , Figure 7 and Figure 8The overflow tank 400 has at least one second longitudinal baffle 410 inside, which divides the overflow tank 400 into at least two flow guiding regions 411. The bottoms of the flow guiding regions 411 are interconnected. The upper part of the second longitudinal baffle 410 is provided with a second overflow port 412. The fluid outlet of the upper flow guiding region 411 and the fluid inlet of the lower flow guiding region 411 are connected through the second overflow port 412. The second overflow ports 412 of adjacent second longitudinal baffles 410 are arranged backwards and staggered, so that the flow direction of the fluid in the adjacent two flow guiding regions 411 is opposite. It can be understood that the fluid inlet of the first flow guiding region 411 is the inlet of the entire overflow tank 400. The fluid inlet of the first flow guiding region 411 is connected to the upper part of the sedimentation tank 300, that is, the fluid inlet of the first flow guiding region 411 is connected to the fluid outlet of the last flow region 330.

[0085] Reference Figure 9 An overflow weir 530 is provided in the inner cavity of the earthen pool 500. The overflow weir 530 is used to divide the inner cavity of the earthen pool 500 into a pre-settling zone 510 and a cold water zone 520. The pre-settling zone 510 is connected to the fluid outlet of the flow guiding area 411 located at the end stage. A third overflow port 531 is provided at the upper end of the overflow weir 530. The pre-settling zone 510 and the cold water zone 520 are connected through the third overflow port 531.

[0086] It is understandable that there is a certain height difference between the sedimentation tank 300, the overflow tank 400, and the ground tank 500. The fluid outlet of the last stage flow zone 330 is higher than the fluid inlet of the first stage guide zone 411, and the fluid outlet of the last stage guide zone 411 is higher than the inlet of the pre-sedimentation zone 510.

[0087] In this embodiment, refer to Figure 6 and Figure 7 The second longitudinal baffle 410 is provided with seven pieces. The seven second longitudinal baffles 410 divide the inner cavity of the overflow pool 400 into eight guiding areas 411. The liquid flows through each guiding area 411 in a serpentine manner, which can extend the flow path of the liquid, thereby improving the heat dissipation and cooling effect of the liquid, and allowing the sedimentation in the liquid to be more complete, resulting in a purer supernatant fluid.

[0088] It is understandable that after the liquid enters the pre-sedimentation zone 510, it enters the cold water zone 520 through the third overflow port 531. The existence of the ground pool 500 can play a transfer role. After sedimentation and cooling treatment, the water can be stored in the cold water zone 520 of the ground pool 500 and can be used later, such as for cooling tower makeup water, atomized water replenishment, etc.

[0089] In some embodiments, the inner cavity of the overflow tank 400 is further provided with a second inlet baffle 420. The second inlet baffle 420 is located at the inlet end of the first-stage flow guiding area 411, which can buffer the liquid entering the overflow tank 400, reduce the liquid flow rate, and facilitate the further precipitation of metal particles in the liquid.

[0090] In some embodiments, refer to Figure 8 The overflow pool 400 is also provided with an inclined baffle 430. The inclined baffle 430 is located in at least one flow guiding area 411 at the front end and is connected to the second longitudinal baffle 410. The inclined baffle 430 has an angle with the fluid direction in the flow guiding area 411.

[0091] In this embodiment, inclined baffles 430 are provided in both the first-stage flow guiding area 411 and the second-stage flow guiding area 411 to intercept fine metal particles mixed in the fluid. After settling, the water slowly overflows in the subsequent six-stage flow guiding area 411, thereby achieving the purpose of cooling.

[0092] In some embodiments, the lower part of the overflow tank 400 is also provided with an emptying port for emptying the material in the inner cavity of the overflow tank 400.

[0093] The dehydration equipment of this utility model embodiment is highly automated, easy to operate, greatly reduces labor production costs, and is highly independent. It can adapt well to water atomization powdering process, and has a good treatment effect on slurry. It can concentrate and dehydrate nickel-iron alloy powder slurry with a water content of about 90% to produce nickel-iron alloy powder with a water content of less than or equal to 10%, providing good raw material conditions for downstream leaching.

[0094] On the other hand, refer to Figure 10 This embodiment also proposes a water recycling system, which includes the dehydration device in any of the embodiments of the first aspect described above. The water obtained after dehydration by the dehydration device of the first aspect embodiment can be utilized in the water recycling system, reducing the waste of water resources.

[0095] In some embodiments, the water circulation system is applied in the water atomization process. The water circulation system also includes a water atomization process device 600, the outlet end of which is connected to the first feed trough 110.

[0096] In this embodiment, the cold water zone 520 is connected to the water replenishment end of the water atomization process equipment 600 through a pipeline, so that the water entering the cold water zone 520 can flow back into the water atomization process for replenishment.

[0097] In some embodiments, the water circulation system further includes a water pump disposed between the water atomization process equipment 600 and the cold water zone 520, for providing power for the water in the cold water zone 520 to enter the water atomization process equipment 600.

[0098] Understandably, the presence of the 500 pool makes the water circulation system operate more stably. It provides a certain buffer space for the water circulation system to prevent the water flow from being too large and exceeding the processing capacity of the 600 water atomization equipment, thus preventing overflow.

[0099] After the slurry flows out of the water atomization process equipment 600, it enters the first feed trough 110 under the action of the slurry pump. The slurry is evenly fed into the first feed trough 110 under the action of the baffle. Under the action of impact and pressure, the suspended slurry is sent from bottom to top to the surface of the drum 120. The ferromagnetic material is adsorbed on the surface of the drum 120 under the action of the magnetic field force and rotates with the drum 120 to the scraper 140. Under the action of its own weight and the scraper 140, the material flows into the first discharge trough 150 and is discharged into the second feed trough 210.

[0100] The slurry entering the second feed tank 210 is adsorbed onto the filter cylinder 220 by magnetic force and its own gravity, forming a filter cake. The filter cake is stratified by particle size in the adsorption zone. As the filter cylinder 220 rotates, the filter cake enters the dewatering zone, where it is dewatered by a vacuum pump. The dewatered filter cake then enters the desizing zone as the filter cylinder 220 rotates, and the filter cake on the filter cylinder 220 is blown off into the second discharge tank 240 for recycling. The desizing filter chamber 221 enters the effluent tank 241 for cleaning as the filter cylinder 220 rotates, and the cleaning is achieved by alternating air and water. Then, it rotates back to the adsorption zone to repeat the above dewatering process.

[0101] Water separated from the slurry enters the settling tank 300 for sedimentation. The liquid flows along the multi-stage flow zone 330 to achieve primary sedimentation. The sediment obtained from sedimentation is returned to the first feed trough 110 by the return pump for re-magnetic separation. The water after primary sedimentation flows to the overflow tank 400 for further sedimentation.

[0102] Water entering the overflow tank 400 is guided through the multi-stage flow guiding zone 411, where metal particles are further settled and the water is cooled. After cooling and complete sedimentation, the water enters the pre-settling zone 510 of the ground tank 500 and then flows through the third overflow port 531 into the cold water zone 520 for later use. Water in the cold water zone 520 can be pumped back into the water atomization process equipment 600 for spray powdering and cooling of the high-temperature melt.

[0103] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A dewatering device, characterized in that, The application relates to a magnetic separator (100) and a filter (200). The magnetic separator (100) comprises a first feeding groove (110), a roller (120), a first driving component (130), a scraper (140), a first magnetic system and a first discharging groove (150), the lower part of the roller (120) is arranged in the first feeding groove (110), the first magnetic system is rotationally connected with the inner wall of the roller (120), the first magnetic system is provided with a first gap facing the scraper (140), the scraper (140) is in abutment with the surface of the roller (120) and extends to the first discharging groove (150), and the first driving component (130) is drivingly connected with the roller (120). The filter (200) comprises a second feeding groove (210), a filter cylinder (220), a second driving component (230), a second discharging groove (240) and a water discharging groove (241), the second feeding groove (210) is communicated with the first discharging groove (150), the upper part of the filter cylinder (220) extends into the second feeding groove (210), the second discharging groove (240) and the water discharging groove (241) are located below the filter cylinder (220), and the second driving component (230) is drivingly connected with the filter cylinder (220).

2. The dewatering device of claim 1, wherein The magnetic separator (100) further comprises a buffer plate (160), the buffer plate (160) is connected with the groove bottom of the first feeding groove (110), the first feeding groove (110) is provided with a feeding port (111), and the buffer plate (160) is located between the feeding port (111) and the roller (120).

3. The dewatering device of claim 1, wherein, The filter (200) further comprises a second magnetic system, a blowing component and a water pumping component, the filter cylinder (220) is provided with at least one filter chamber (221), the inner wall of the filter cylinder (220) is rotationally connected with the second magnetic system, any one of the filter chambers (221) sequentially passes through the second feeding groove (210), the second discharging groove (240) and the water discharging groove (241) when the filter cylinder (220) rotates, the second magnetic system is provided with a second gap facing the second discharging groove (240), the gas outlet of the blowing component is communicated with the filter chamber (221) entering the second discharging groove (240), the filter chamber (221) entering the second feeding groove (210) and the filter chamber (221) entering the water discharging groove (241), the water inlet end of the water pumping component is communicated with the filter chamber (221) located between the second feeding groove (210) and the second discharging groove (240), and the water outlet end of the water pumping component is communicated with the water discharging groove (241).

4. The dewatering device of claim 3, wherein, The water pumping component includes a vacuum pump, a distribution head (250), an automatic liquid discharger, the automatic liquid discharger is provided with a first water tank, a second water tank and a third water tank, the inlet end of the first water tank is communicated with the filter chamber (221), the inlet end of the vacuum pump is connected with the first water tank, the outlets of the second water tank and the third water tank are respectively communicated with the water outlet groove (241), the distribution head (250) includes a fixed layer and a rotating layer, the rotating layer is rotationally connected with the fixed layer, the fixed layer is provided with four holes, the four holes are respectively communicated with the first water tank, the second water tank, the third water tank and the atmosphere, the rotating layer is provided with two grooves, the two grooves are respectively used for communicating two adjacent holes, so that one of the second water tank or the third water tank is communicated with the atmosphere, and the other of the second water tank or the third water tank is communicated with the first water tank.

5. The dewatering device of claim 4, wherein, The outlet end of the vacuum pump is communicated with the inlet end of the air blowing component.

6. The dewatering device of claim 1, wherein The dewatering device further includes: A sediment tank (300), the inlet end of the sediment tank (300) is arranged below the water outlet groove (241) and is communicated with the water outlet groove (241) and the outlet end of the first feeding groove (110), the bottom of the sediment tank (300) is communicated with the inlet end of the first feeding groove (110).

7. The dewatering device of claim 6, wherein, The inner cavity of the sediment tank (300) is provided with at least one first longitudinal baffle (310), the first longitudinal baffle (310) is used for separating the inner cavity of the sediment tank (300) into at least two flow areas (330), the bottoms of the flow areas (330) are communicated with each other, the upper part of the first longitudinal baffle (310) is provided with a first overflow port, and the first overflow ports of adjacent two first longitudinal baffles (310) are staggered arranged, the fluid outlet of the upper flow area (330) is communicated with the fluid inlet of the lower flow area (330) through the first overflow port, and the flow directions of the fluids in adjacent two flow areas (330) are opposite.

8. The dewatering device of claim 7, wherein, The inlet end of the first flow area (330) is the inlet end of the sediment tank (300), the inner cavity of the sediment tank (300) is further provided with a first water inlet baffle (320), and the first water inlet baffle (320) is arranged at the inlet end of the first flow area (330).

9. The dewatering device of claim 6, wherein, The dewatering device further includes: The inner cavity of the overflow tank (400) is provided with at least one second longitudinal baffle (410) for separating the inner cavity of the overflow tank (400) into at least two levels of flow guide areas (411), the bottoms of the flow guide areas (411) are communicated with each other, the upper part of the second longitudinal baffle (410) is provided with a second overflow port (412), and the second overflow ports (412) of adjacent two second longitudinal baffles (410) are staggered arranged in front and back, the fluid outlet of the upper level of the flow guide areas (411) and the fluid inlet of the lower level of the flow guide areas (411) are communicated through the second overflow port (412), the flow directions of the fluids in adjacent two levels of the flow guide areas (411) are opposite, the fluid inlet of the first level of the flow guide areas (411) is the inlet of the overflow tank (400), and the fluid inlet of the first level of the flow guide areas (411) is communicated with the upper part of the precipitation tank (300); The inner cavity of the ground pool (500) is provided with an overflow weir (530) for separating the inner cavity of the ground pool (500) into a pre-sedimentation area (510) and a cold water area (520), the pre-sedimentation area (510) is communicated with the fluid outlet of the terminal flow guide area (411), and the upper end of the overflow weir (530) is provided with a third overflow port (531), and the pre-sedimentation area (510) and the cold water area (520) are communicated through the third overflow port (531).

10. The dewatering device of claim 9, wherein, The inner cavity of the overflow tank (400) is further provided with a second water inlet baffle (420), and the second water inlet baffle (420) is arranged at the inlet end of the first level of the flow guide areas (411).

11. The dewatering device of claim 9, wherein, The inner cavity of the overflow tank (400) is further provided with an inclined baffle (430), the inclined baffle (430) is located in the front end of at least one level of the flow guide areas (411) and is connected with the second longitudinal baffle (410), and the inclined baffle (430) has an angle with the flow direction of the fluid in the flow guide area (411).

12. A water circulation system characterized by, The water atomization process equipment (600) is connected with the inlet end of the first feeding groove (110).

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