CN113244669B - Filter equipment and have its preparation zinc powder equipment - Google Patents

Abstract

The invention provides a filtering device and equipment for preparing zinc powder with the same, wherein the filtering device comprises: the filter container comprises a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall, wherein an openable liquid inlet is formed in the top wall, an openable liquid outlet is formed in the bottom wall, an openable feed inlet and an openable first liquid outlet are formed in the side wall, and the feed inlet is positioned below the first liquid outlet; the stopping orifice plate is positioned between the feed inlet and the first liquid outlet; the floating pore plate can be positioned in the filtering container in a suspending way, the floating pore plate is positioned below the stopping pore plate, the floating pore plate and the side wall jointly enclose a filling space, and the feeding hole is communicated with the filling space; and the guide cylinder is arranged in the filtering container and communicated with the liquid inlet, and the guide cylinder penetrates through the stop pore plate and the floating pore plate. The technical scheme of this application has solved the high pressure water jet among the correlation technique effectively and has received the erosion and corrosion, shortens life's problem.

Description

Filter equipment and have its preparation zinc powder equipment

Technical Field

The invention relates to the technical field of metal zinc powder production equipment, in particular to a filtering device and zinc powder preparation equipment with the same.

Background

The zinc powder manufacturing process mainly comprises three processes, namely a reduction smelting process, a melting blowing process and a water atomization process. The reduction smelting method is especially suitable for the process of removing nickel and cobalt. But the process is long, the investment is high, the environment is poor, and the chlorine element content in the product is high. The melting blowing method uses zinc cathode sheets and zinc particles as raw materials, and is suitable for copper and cadmium removal and cadmium recovery. But has the disadvantages of high cost and poor efficiency.

The water atomization method is a new process method for producing the metal zinc powder by adopting high-pressure water to replace compressed air, the particle size of the zinc powder is smaller than that of the air atomized zinc powder, the specific surface area of the zinc powder is larger than that of the air atomized zinc powder, and the oxidation rate of the zinc powder is lower than that of the air atomized zinc powder. Because the surface area of the hydraulic atomized zinc powder is large, and the activity is larger because of no oxide film, the consumption of the hydraulic atomized zinc powder is less than that of the air atomized zinc powder when the hydraulic atomized zinc powder is used for purifying and replacing zinc sulfate solution. Therefore, the water atomization method for preparing the zinc powder has great advantages.

The zinc powder is prepared by a water mist method, metal zinc is melted in an induction furnace, a melt flow is atomized by high-pressure water, then zinc powder slurry is formed by condensation, after the zinc powder slurry is classified, qualified slurry is used as a displacer, and separated clean water is recycled. However, in the using process, the high-pressure water nozzle can generate serious scouring corrosion due to the fact that the recycled clean water contains a small amount of metal zinc particles, and the service life of the high-pressure water nozzle is shortened.

Disclosure of Invention

The invention mainly aims to provide a filtering device and equipment with the filtering device for preparing zinc powder, and aims to solve the problems that a high-pressure water nozzle in the related technology is scoured and corroded and the service life is shortened.

In order to achieve the above object, according to one aspect of the present invention, there is provided a filter device including: the filter container comprises a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall, wherein an openable liquid inlet is formed in the top wall, an openable liquid outlet is formed in the bottom wall, an openable feed inlet and an openable first liquid outlet are formed in the side wall, and the feed inlet is positioned below the first liquid outlet; the stopping pore plate is positioned in the filtering container and is vertically arranged relative to the side wall, and the stopping pore plate is positioned between the feeding hole and the first liquid outlet; the floating pore plate can be positioned in the filtering container in a suspending way, the floating pore plate is positioned below the stop pore plate, the floating pore plate and the side wall jointly enclose a filling space, the feeding port is communicated with the filling space, and the filling space is filled with a filtering medium; and the guide cylinder is arranged in the filtering container and communicated with the liquid inlet, and the guide cylinder penetrates through the stop pore plate and the floating pore plate.

Furthermore, the side wall is provided with a liquid inlet capable of being opened and closed and a second liquid outlet capable of being opened and closed, and the liquid inlet, the second liquid outlet and the feed inlet are the same in height on the side wall.

Further, the stop orifice is adjustably disposed within the filter receptacle by a position adjustment structure that includes a latch structure telescopically disposed on the sidewall.

Further, the locking structure comprises an upper blocking piece and a lower blocking piece which are arranged at intervals, and the blocking orifice plate is arranged between the upper blocking piece and the lower blocking piece.

Furthermore, the position adjusting structure also comprises a magnetic suction component and a controller connected with the magnetic suction component, the controller is arranged outside the filtering container, the magnetic suction component is arranged between the side wall and the upper baffle piece and between the side wall and the lower baffle piece, the position adjusting structure also comprises a first elastic piece, first elastic pieces are also arranged between the side wall and the upper baffle piece and between the side wall and the lower baffle piece, the controller controls the magnetic suction component to work so that the first elastic pieces are compressed, the upper baffle piece or the lower baffle piece is positioned at a retraction position, the controller controls the magnetic suction component to stop working, and the first elastic pieces elastically reset so that the upper baffle piece or the lower baffle piece is switched from the retraction position to the extension position; or, the position control structure still includes magnetism and inhales the subassembly and inhale the controller that the subassembly is connected with magnetism, the controller sets up outside filtering the container, magnetism is inhaled the subassembly and is set up between lateral wall and last fender piece, the position control structure still includes the first elastic component between lateral wall and the last fender piece, the work of subassembly is inhaled to controller control magnetism, so that first elastic component receives the compression, it is in the withdrawal position to go up the fender piece, the subassembly stop work is inhaled to controller control magnetism, first elastic component elasticity resets so that last fender piece is switched to the extended position by the withdrawal position, keep off the piece down and pass through the setting of second elastic component on the lateral wall.

Further, backstop orifice plate and unsteady orifice plate all set up in filtering the container through position control structure adjustablely, and position control structure includes the latch structure of telescopically setting on the lateral wall, and the latch structure includes a plurality ofly, and a plurality of latch structures set up on the lateral wall along filtering the vertical axis interval of container, backstop orifice plate and unsteady orifice plate all adjustably switch over the position between a plurality of latch structures.

Furthermore, the filter medium comprises a plurality of polystyrene foam balls, fiber balls, coconut shells, artificial ceramsite and artificial synthetic fibers, the floating pore plates are multiple, the filling space comprises a first filling space formed between the stop pore plate and the floating pore plate positioned on the uppermost layer, and the filling space also comprises a second filling space formed between the other two adjacent floating pore plates; under the condition that the zinc powder content of the liquid entering the filtering container through the liquid inlet is less than 100ppm, the polystyrene foam balls, the fiber balls and the artificial synthetic fibers are alternatively filled in the first filling space and the second filling space; under the condition that the content of the zinc powder of the liquid entering the filtering container through the liquid inlet is between 100ppm and 500ppm, and when the second filling space is one, two of the polystyrene foam ball, the fiber ball, the coconut shell and the artificial ceramsite are sequentially filled in the first filling space and the second filling space, or under the condition that the content of the zinc powder of the liquid entering the filtering container through the liquid inlet is between 100ppm and 500ppm, and when the second filling space is multiple, two or three of the polystyrene foam ball, the fiber ball, the coconut shell and the artificial ceramsite are sequentially filled in the first filling space and the multiple second filling spaces.

According to another aspect of the present invention, there is provided an apparatus for producing zinc powder, comprising: an electric furnace; the atomizer is arranged at the downstream of the electric furnace, and a first inlet of the atomizer is communicated with an outlet of the electric furnace; the high-pressure water pump is arranged at the upstream of the atomizer, the outlet of the high-pressure water pump is communicated with the second inlet of the atomizer, and the second inlet of the atomizer is provided with a high-pressure water nozzle in a penetrating way; the vibrating screen is arranged at the downstream of the atomizer, the outlet of the vibrating screen is communicated with the inlet of the vibrating screen, and the material return port of the vibrating screen is communicated with the inlet of the electric furnace; the sedimentation container is arranged at the downstream of the vibrating screen, a first inlet of the sedimentation container is communicated with a pulp outlet of the vibrating screen, and the sedimentation container is provided with an openable bottom outlet; the filtering device is arranged at the downstream of the settling container, a liquid inlet of the filtering container of the filtering device is communicated with an outlet at the top of the settling container, a liquid outlet of the filtering container of the filtering device is communicated with a second inlet of the settling container, and the filtering device is the filtering device; and the clear water pump is arranged at the downstream of the filtering device, the inlet of the clear water pump is communicated with the first liquid outlet of the filtering container of the filtering device, and the outlet of the clear water pump is communicated with the inlet of the high-pressure water pump.

Furthermore, the filtering devices comprise a plurality of filtering devices which are sequentially communicated, a liquid inlet of a filtering container of the most upstream filtering device is communicated with an outlet at the top of the settling container through a first communicating pipeline, and a first liquid outlet of a filtering container of an upstream filtering device of two adjacent filtering devices is communicated with a liquid inlet of a filtering container of a downstream filtering device through a second communicating pipeline; the liquid outlet of the filtering container of each filtering device is communicated with the second inlet of the settling container, and the first liquid outlet of the filtering container of the most downstream filtering device is communicated with the inlet of the clean water pump; but still be provided with open and close income liquid mouth and open and close second liquid outlet on filter equipment's the lateral wall, but the income liquid mouth of most upstream filter equipment's the income liquid mouth and first communicating pipe way are through third communicating pipe way intercommunication, preparation zinc powder equipment still includes the recovery container, second communicating pipe way among two adjacent filter equipment and the income liquid mouth of filter equipment's the filter equipment of low reaches are through fourth communicating pipe way intercommunication, every filter equipment's second liquid outlet and recovery container intercommunication.

Furthermore, the filter medium comprises polystyrene foam balls, fiber balls, coconut shells, artificial ceramsite and artificial synthetic fibers, the number of the floating pore plates is multiple, the filling space comprises a first filling space formed between the floating pore plate positioned on the uppermost layer and the stop pore plate, and the filling space also comprises a second filling space formed between the other two adjacent floating pore plates; under the condition that the content of zinc powder in liquid entering the filtering container through the liquid inlet is more than 500ppm, one or two of coconut shells and artificial ceramsite are filled in the first filling space and the second filling space of the filtering container of the most upstream filtering device, two or three of polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite in the filtering container of the rest filtering device are sequentially filled in the first filling space and the second filling space, or two or three of polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite in the filtering container of the rest filtering device are sequentially filled in the first filling space and the second filling spaces.

By applying the technical scheme of the invention, the filtering device comprises: the filter comprises a filter container, a stop orifice plate, a floating orifice plate and a guide cylinder. The filter container includes a top wall, a bottom wall, and a side wall connected between the top wall and the bottom wall. But be provided with open closed inlet on the roof, be provided with open closed leakage fluid dram on the diapire, be provided with open closed feed inlet and open closed first liquid outlet on the lateral wall, the feed inlet is located the below of first liquid outlet. The stop orifice is located within the filter cartridge and is positioned vertically relative to the sidewall. The backstop orifice plate is located between feed inlet and the first liquid outlet. The floating orifice plate may be positioned in suspension within the filtration vessel. The floating pore plate is positioned below the stop pore plate, and the stop pore plate, the floating pore plate and the side wall jointly enclose a filler space. The feed inlet is communicated with the filler space, and the filler space is filled with the filter medium. The guide cylinder is arranged in the filtering container and communicated with the liquid inlet, and the guide cylinder penetrates through the stop pore plate and the floating pore plate. The filter medium is filled into the filling space through the feed opening. When the filter device is used for filtering, the recycled clean water enters the bottom of the filter container through the liquid inlet and the guide cylinder, the recycled clean water pushes the floating pore plate to move upwards along with the gradual rise of the water level of the recycled clean water in the filter container, so that the floating pore plate compacts the filter medium, the water level in the filter container continues to rise, and the recycled clean water is filtered by the compacted filter medium, discharged from the first liquid outlet and flows into the high-pressure water nozzle. Therefore, when the recycled clean water passes through the compacted filter medium, the metal zinc particles in the recycled clean water are transmitted to the surface of the filter medium from the recycled clean water under the action of precipitation, inertia, interception, diffusion and power effects of the filter medium and are attached to the filter medium under the action of van der Waals force (intermolecular action) so as to effectively realize filtration, improve the filtering effect of the filter medium, greatly reduce the content of the metal zinc particles in the recycled clean water, further effectively reduce the possibility that the high-pressure water nozzle is corroded by scouring and prolong the service life. Therefore, the technical scheme of this application has solved the high pressure water jet among the correlation technique effectively and has received the erosion and corrosion, shortens life's problem.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic front view of an embodiment of a filter device according to the invention;

FIG. 2 shows a schematic view of the filter receptacle, the stop plate and a floating plate of the filter device of FIG. 1;

FIG. 3 shows a schematic cross-sectional view of the filtration vessel of the filtration apparatus of FIG. 1;

FIG. 4 shows a schematic view of the filter receptacle, the stop orifice and the three floating orifices of the filter device of FIG. 1;

FIG. 5 shows a schematic view of the filter device of FIG. 1 before the stop orifice is snapped into the latching arrangement;

FIG. 6 is a schematic view of the movement of the lower stop member of the filter assembly of FIG. 5 prior to the stop orifice plate snapping into the latch configuration;

FIG. 7 shows a schematic view of the stop orifice of the filter device of FIG. 1 snapped into the latching arrangement;

FIG. 8 is a schematic view of the latch mechanism of the filter assembly of FIG. 1 shown stopping the orifice plate from disengaging after the upper stop has been moved; and

FIG. 9 shows a schematic diagram of an embodiment of an apparatus for the production of zinc powder according to the invention.

Wherein the figures include the following reference numerals:

10. a filtration vessel; 11. a top wall; 12. a bottom wall; 13. a side wall; 14. a liquid inlet; 15. a liquid discharge port; 16. a liquid inlet; 17. a second liquid outlet; 18. a feed inlet; 19. a first liquid outlet; 21. a stop orifice plate; 22. a floating orifice plate; 23. a first packing space; 24. a second packing space; 25. a draft tube; 30. a filter medium; 40. a position adjustment structure; 41. a latch structure; 411. an upper stopper; 412. a lower stopper; 42. a magnetic component; 51. an electric furnace; 52. an atomizer; 53. a high pressure water pump; 54. vibrating screen; 55. a settling vessel; 56. a clean water pump; 551. a top outlet; 552. a second inlet of the settling vessel; 71. a first valve; 72. a second valve; 73. a third valve; 74. a fourth valve; 75. a fifth valve; 76. a sixth valve; 81. a first communicating pipe; 82. a second communication line; 83. a third communication line; 84. a fourth communication line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 4, the filter device of the present embodiment includes: the filter container 10, the stop orifice 21, the floating orifice 22 and the guide shell 25. The filter cartridge 10 includes a top wall 11, a bottom wall 12, and a side wall 13 connected between the top wall 11 and the bottom wall 12. An openable liquid inlet 14 is arranged on the top wall 11, an openable liquid outlet 15 is arranged on the bottom wall 12, an openable feed inlet 18 and an openable first liquid outlet 19 are arranged on the side wall 13, and the feed inlet 18 is positioned below the first liquid outlet 19. The stop orifice 21 is located in the filter container 10 and is arranged vertically with respect to the side wall 13. A stop orifice 21 is located between the inlet port 18 and the first outlet port 19. The floating orifice plate 22 may be positioned in suspension within the filtration vessel 10. The floating orifice plate 22 is located below the stop orifice plate 21, and the stop orifice plate 21, the floating orifice plate 22 and the side wall 13 together enclose a filling space. The feed inlet 18 communicates with a packing space filled with a filter medium 30. The guide shell 25 is arranged in the filtering container 10 and communicated with the liquid inlet 14, and the guide shell 25 penetrates through the stop orifice plate 21 and the floating orifice plate 22.

By applying the solution of the embodiment, the filter medium 30 is filled into the filling space through the feeding hole 18. When the filtering device is used for filtering, the recycled clean water enters the bottom of the filtering container 10 through the liquid inlet 14 and the guide cylinder 25, the recycled clean water pushes the floating pore plate 22 to move upwards along with the gradual rise of the water level of the recycled clean water in the filtering container 10, so that the floating pore plate 22 compacts the filtering medium, the water level in the filtering container 10 continues to rise, and the recycled clean water is filtered by the compacted filtering medium, discharged from the first liquid outlet 19 and flows into the high-pressure water nozzle. Therefore, when the recycled clean water passes through the compacted filter medium, the metal zinc particles in the recycled clean water are transmitted to the surface of the filter medium from the recycled clean water under the action of precipitation, inertia, interception, diffusion and power effects of the filter medium and are attached to the filter medium under the action of van der Waals force (intermolecular action) so as to effectively realize filtration, improve the filtering effect of the filter medium, greatly reduce the content of the metal zinc particles in the recycled clean water, further effectively reduce the possibility that the high-pressure water nozzle is corroded by scouring and prolong the service life. Therefore, the technical scheme of the embodiment effectively solves the problems that the high-pressure water nozzle in the related art is subjected to erosion corrosion and the service life is shortened.

As shown in fig. 1 to 3, the sidewall 13 is further provided with an openable liquid inlet 16 and an openable second liquid outlet 17, and the liquid inlet 16, the second liquid outlet 17 and the feed inlet 18 have the same height on the sidewall. This facilitates the introduction of filter medium 30 from the inlet port 18 into the fill space, while the inlet port 16 and the second outlet port 17 are both within the fill space, which also facilitates cleaning of the filter medium 30 and removal of the filter medium 30. When the filtering medium in the filtering device is washed, the liquid outlet 15 is opened to discharge the recycled clear water containing the settled metal zinc particles, and the filtered recycled clear liquid is input into the high-pressure water nozzle through the first liquid outlet 19. The recycled clean water enters the filtering container 10 through the liquid inlet 16 and is then discharged through the liquid outlet 15, so that the liquid inlet amount and the liquid outlet amount are controlled to be consistent. The recycled clean water entering the filtering container 10 from the second liquid outlet 17 washes the filtering medium, so that the filtering medium flows, and the filtering medium is in a loose state and is easy to backwash. The backwashing process only lasts for 1-2 min, and the time is short.

The filter medium needs to be replaced after being used for a long time. The liquid inlet 16 is opened, so that the recycled clean water enters the filling space through the liquid inlet 16, and the second liquid outlet 17 is opened to discharge the clean water, because the heights of the liquid inlet 16 and the second liquid outlet 17 on the side wall are the same, the recycled clean water is discharged from the filling space entering the liquid inlet 16 through the second liquid outlet 17, a rotating water flow is formed and an impact force is generated, the filter medium in the filling space is taken out of the filter container 10 by the impact force, and the filter medium is discharged to empty the filling space. Subsequently, the feed inlet 18 is opened, and a new filter medium is filled into the filling space through the feed inlet 18, so that the filter device can continue to filter and reuse the metal zinc particles in the clean water after the filter medium is replaced.

In the present embodiment, as shown in fig. 1 to 3, a first valve 71 is disposed at the liquid inlet 14; a second valve 72 is arranged at the liquid outlet 15; a third valve 73 is arranged at the liquid inlet 16; a fourth valve 74 is arranged at the second liquid outlet 17; a fifth valve 75 is arranged at the feed inlet 18; a sixth valve 76 is disposed at the first liquid outlet 19.

As shown in fig. 5 to 8, the stop perforated plate 21 is adjustably arranged in the filter container 10 by means of a position adjustment structure 40 in order to enable the position of the stop perforated plate 21 to be adjusted on the side wall 13. The position adjustment structure 40 includes a latch structure 41 telescopically disposed on the side wall 13. Like this, latch structure 41 can stretch out or retract, and when latch structure 41 stretched out, latch structure 41 was in the locking state of backstop orifice plate 21, and when latch structure 41 retracted, latch structure 41 was in the unblock state of dodging backstop orifice plate 21, and like this, latch structure 41 simple structure, locking and unblock effect are better, are convenient for realize.

As shown in fig. 5 to 8, the latch structure 41 includes an upper stopper 411 and a lower stopper 412 which are spaced apart from each other, and the stop orifice plate 21 is disposed between the upper stopper 411 and the lower stopper 412. The upper stop 411 is stopped above the stop plate 21 and the lower stop 412 is stopped below the stop plate 21, so that the upper stop 411 and the lower stop 412 can limit the movement range of the stop plate 21, so that the stop plate 21 can be reliably locked in the latch structure 41.

As shown in fig. 5 to 8, the position adjusting structure 40 further includes a magnetic attraction component 42 and a controller connected to the magnetic attraction component 42. The controller is arranged outside the filtering container 10, and the magnetic attraction assemblies 42 are arranged between the side wall 13 and the upper baffle 411 and between the side wall 13 and the lower baffle 412. The position adjustment structure 40 further includes a first elastic member. First elastic members are further provided between the side wall 13 and the upper stopper 411 and between the side wall 13 and the lower stopper 412. The controller controls the magnetic attraction assembly 42 to operate, so that the first elastic member is compressed and the upper stop member 411 is in the retracted position. The controller controls the magnetic attraction assembly 42 to stop working, and the first elastic member is elastically reset to switch the upper blocking member 411 from the retracted position to the extended position. Alternatively, the controller controls the magnetic attraction assembly 42 to operate such that the first resilient member is compressed and the lower stop 412 is in the retracted position. The controller controls the magnetic attraction assembly 42 to stop working, and the first elastic member is elastically reset to switch the lower stop member 412 from the retracted position to the extended position. Like this, inhale subassembly 42, first elastic component and controller and mutually support at magnetism, realize that the process is reliable and steady, the automated control of being convenient for. Of course, the controller controls the magnetic attraction assembly 42 to operate, so that the first elastic member is compressed, and the upper blocking member 411 and the lower blocking member 412 are both in the retracted position. The controller controls the magnetic attraction assembly 42 to stop working, and the first elastic member is elastically reset so that the upper stop member 411 and the lower stop member 412 are switched from the retracted position to the extended position.

Of course, in the embodiment not shown in the figure, the position adjusting structure further includes a magnetic attraction component and a controller connected with the magnetic attraction component, the controller is disposed outside the filtering container, the magnetic attraction component is disposed between the side wall and the upper blocking member, the position adjusting structure further includes a first elastic member between the side wall and the upper blocking member, the controller controls the magnetic attraction component to work, so that the first elastic member is compressed, the upper blocking member is located at the retraction position, the controller controls the magnetic attraction component to stop working, the first elastic member elastically resets, so that the upper blocking member is switched from the retraction position to the extension position, and the lower blocking member is disposed on the side wall through the second elastic member.

As shown in fig. 5 to 8, in particular, the upper stopper 411 and the lower stopper 412 are both of a wedge structure, and the upper stopper 411 and the lower stopper 412 are disposed opposite to each other. The inclined surface of the upper stopper 411 faces upward, the inclined surface of the lower stopper 412 faces downward, and the vertical surface of the upper stopper 411 corresponds to the vertical surface of the lower stopper 412. Therefore, the water level in the filtering container 10 gradually rises to push the stopping hole plate 21 to move upwards, and the inclined surface of the lower stopper 412 is arranged to facilitate the stopping hole plate 21 to push the lower stopper 412, facilitate the lower stopper 412 to retract smoothly after being pressed, and facilitate the lower stopper 412 to be in the retracted position. The recycled clean water pushes the stop orifice plate 21 to move upwards continuously, and the periphery of the stop orifice plate 21 is located between the vertical surface of the upper stopper 411 and the vertical surface of the lower stopper 412, so that the stop orifice plate 21 is clamped into the latch structure 41. The controller controls the magnetic attraction assembly 42 to work, so that the first elastic member is compressed, the upper blocking member 411 is located at the retraction position, and the recycled clean water pushes the blocking orifice plate 21 to continue moving upwards, so that the blocking orifice plate 21 is separated from the locking structure 41. When the stop orifice plate 21 is completely separated from the latching structure 41, the controller controls the magnetic attraction assembly 42 to stop working, and the first elastic member is elastically restored to switch the upper stop member 411 from the retracted position to the extended position. In this way, the stop disk 21 can be moved to the next latch structure 41 after being disengaged from this latch structure 41 and can be snapped into the next latch structure 41. Accordingly, the process of engaging or disengaging the floating orifice 22 with or from the latch structure 41 is the same as the process of engaging or disengaging the stop orifice 21 with or from the latch structure 41, and will not be described in detail.

As shown in fig. 4 to 8, the stopper orifice 21 and the floating orifice 22 are adjustably provided in the filtering container 10 by the position adjusting structure 40. The position adjustment structure 40 includes a latch structure 41 telescopically disposed on the side wall 13. The latch structures 41 comprise four, four latch structures 41 being arranged at intervals on the side wall 13 along the vertical axis of the filtration receptacle 10. The stop orifice 21 and the floating orifice 22 are each adjustable in position between the four latching formations 41. As shown in fig. 4 to 8, the floating orifice plates 22 are three, the packing space includes a first packing space 23 formed between the stopper orifice plate 21 and the floating orifice plate 22 positioned at the uppermost layer, and the packing space further includes a second packing space 24 formed between the remaining adjacent two floating orifice plates 22. The number of second filler spaces 24 is two. The four locking structures 41 are a first locking structure, a second locking structure, a third locking structure and a fourth locking structure from bottom to top in sequence.

In the present embodiment, as shown in fig. 1 to 8, there are one first packing space 23 and two second packing spaces 24. The recycled clean water enters the first filling space 23 from the liquid inlet 16 and is discharged through the second liquid outlet 17, the filter medium in the first filling space 23 is taken out of the filter container 10, and the filter medium is discharged to empty the first filling space 23. After the first filling space 23 has been emptied, the stop screen 21 is moved upwards, and the stop screen 21 is moved out of the first latching structure from the first latching structure. The uppermost floating orifice plate 22 is then moved upwardly to the first latch structure. Then, the filter medium in the second filling space 24 between the floating perforated plate 22 at the uppermost layer and the floating perforated plate 22 at the middle layer is discharged correspondingly, so that the recycled clean water enters through the liquid inlet 16 and is discharged from the second liquid outlet 17, and the filter medium in the second filling space 24 is discharged. Accordingly, after the second filling space 24 has been emptied, the stop screen 21, the uppermost floating screen 22 and the intermediate floating screen 22 are moved upward from the first latching arrangement to the outside of the first latching arrangement, and the lowermost floating screen 22 is then moved upward to the first latching arrangement. Then, the filter medium in the second filling space 24 between the floating orifice plate 22 in the middle layer and the floating orifice plate 22 in the lowest layer is discharged correspondingly, so that the recycled clean water enters through the liquid inlet 16 and is discharged from the second liquid outlet 17, and the filter medium in the second filling space 24 is discharged. Thereby discharging all the filter medium in one first packing space 23 and in two second packing spaces 24 in the filter holder 10.

As shown in fig. 1 to 8, before filling a first filling space 23 and two second filling spaces 24 in the filter vessel 10 with new filter media, the first liquid outlet 19 is opened, part of the liquid in the filter vessel 10 is discharged, and the liquid is discharged through the first liquid outlet 19 into a settling vessel of an apparatus for producing zinc powder so that the first filling space 23 is formed between the stopper orifice 21 and the uppermost floating orifice 22. The inlet 18 is opened and the filter media is filled, after the inlet 18 is filled. Adjusting the second locking structure and the first locking structure to enable the stop orifice plate 21 to move from the first locking structure to the second locking structure, enabling the floating orifice plate 22 at the uppermost layer to be located at the first locking structure, then opening the liquid inlet 16 to recycle clean water, moving the stop orifice plate 21 upwards to enable the stop orifice plate 21 to move from the second locking structure to the third locking structure, enabling the floating orifice plate 22 at the uppermost layer to be located at the second locking structure, and enabling the floating orifice plate 22 at the middle layer to be located at the first locking structure. The first outlet 19 is opened and part of the liquid in the filtering vessel 10 is discharged through the first outlet 19 into the settling vessel of the apparatus for producing zinc powder so that a second filling space 24 is formed between the floating perforated plate 22 of the uppermost layer and the floating perforated plate 22 of the intermediate layer. The inlet 18 is opened and the filter media is filled, after the inlet 18 is filled. Adjusting the third locking structure, the second locking structure and the first locking structure, and moving the stop orifice plate 21 upwards to enable the stop orifice plate 21 to move from the third locking structure to the fourth locking structure, wherein the floating orifice plate 22 at the uppermost layer is located at the third locking structure, the floating orifice plate 22 at the middle layer is located at the second locking structure, and the floating orifice plate 22 at the lowermost layer is located at the second locking structure. The first liquid outlet 19 is opened, part of the liquid in the filtering vessel 10 is discharged through the first liquid outlet 19 into a settling vessel of an apparatus for producing zinc powder so that a second filling space 24 is formed between the floating orifice plate 22 of the intermediate layer and the floating orifice plate 22 of the lowermost layer. The inlet opening 18 is opened and the filter medium is filled, after the inlet opening 18 is filled, until the filter medium is completely filled into the first filling space 23 and the two second filling spaces 24. In this embodiment, the filter medium is fed from the feed port 18 and is delivered by a diaphragm pump.

The process of filling the filter medium and the process of discharging the filter medium in the filter device of the embodiment can control the mechanical operation, do not need manual filling, and are favorable for saving the labor cost.

Of course, the number of the locking structures can be not limited to four, but also one, two, three, five or more, and the number of the floating orifice plates is not limited to three, but also one, two, four or more. The number of the locking structures can be determined according to the matching condition of the stop orifice plate and the plurality of floating orifice plates.

As shown in fig. 4, the filter medium 30 includes a plurality of floating orifice plates 22, a first packing space 23 formed between the stopper orifice plate 21 and the floating orifice plate 22 positioned at the uppermost layer, and a second packing space 24 formed between the remaining adjacent two floating orifice plates 22. The particle size range of the filter medium is 1-4mm, the nonuniform coefficient is less than 1.5, and the height of the filter medium layer is 300-600 mm.

Considering the difference of specific surface area, surface activity and adhesion strength to zinc particles of different filter media, different types need to be selected according to different filter media. The method comprises the following specific steps: in the case where the zinc powder content of the liquid introduced into the filtration vessel 10 through the liquid inlet 14 is less than 100ppm, the polystyrene foam balls, the fiber balls, and the synthetic fibers are alternatively filled in the first and second stuffing spaces 23 and 24. Under the condition that the zinc powder content of the liquid entering the filtering container 10 through the liquid inlet 14 is between 100ppm and 500ppm, and one second filler space 24 is provided, two of the polystyrene foam ball, the fiber ball, the coconut shell and the artificial ceramsite are sequentially filled in the first filler space 23 and the second filler space 24, or under the condition that the zinc powder content of the liquid entering the filtering container 10 through the liquid inlet 14 is between 100ppm and 500ppm, and a plurality of second filler spaces 24 are provided, two or three of the polystyrene foam ball, the fiber ball, the coconut shell and the artificial ceramsite are sequentially filled in the first filler space 23 and the plurality of second filler spaces 24. Preferably, different proportions of the polystyrene foam balls, the fiber balls, the coconut shells and the artificial ceramsite are required to be prepared according to different filter media, wherein the filling ratio of the polystyrene foam balls, the fiber balls, the coconut shells and the artificial ceramsite is 1: 0.5-1.5: 1-3: 1-4.

Therefore, through the selection of different filter media, the metal zinc particles are easy to adhere to the filter media, the filtering effect is good, and the content of the metal zinc particles in the filter media after filtering and recycling clean water is lower than 10 ppm. The damage of the recycled clean water to the high-pressure water nozzle is reduced, and the service life is effectively prolonged.

In the case where the zinc powder content of the liquid introduced into the filtration vessel 10 through the liquid inlet 14 is less than 100ppm, the polystyrene foam balls, the fiber balls, and the synthetic fibers are alternatively filled in the first and second stuffing spaces 23 and 24; it means that the first filler space 23 and the second filler space 24 are filled with polystyrene foam balls, or the first filler space 23 and the second filler space 24 are filled with fiber balls, or the first filler space 23 and the second filler space 24 are filled with synthetic fibers. It should be noted that the synthetic fibers are in the form of strips.

In the case where the zinc powder content of the liquid introduced into the filtering container 10 through the liquid inlet 14 is between 100ppm and 500ppm and the second stuffing space 24 is one, two of polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite are sequentially filled in the first stuffing space 23 and the second stuffing space 24.

Wherein, two of the polystyrene foam ball, the fiber ball, the coconut shell and the artificial ceramsite are sequentially filled in the first filling space 23 and the second filling space 24, which means that the polystyrene foam ball is filled in the first filling space 23 and the fiber ball is filled in the second filling space 24. Or the fiber balls are filled in the first filler space 23 and the coconut shell is filled in the second filler space 24. Or coconut shell is filled in the first filling space 23 and artificial ceramsite is filled in the second filling space 24.

In the case where the zinc powder content of the liquid introduced into the filtering container 10 through the liquid inlet 14 is between 100ppm and 500ppm, and the second filler space 24 is plural, two or three of polystyrene foam balls, fiberballs, coconut shells and artificial ceramsite are sequentially filled in the first filler space 23 and the second filler spaces 24, wherein two of polystyrene foam balls, fiberballs, coconut shells and artificial ceramsite are sequentially filled in the first filler space 23 and the second filler spaces 24, which means that polystyrene foam balls are filled in the first filler space 23, fiberballs are filled in an upper one of the adjacent two second filler spaces 24, and polystyrene foam balls are filled in a lower one of the adjacent two second filler spaces 24. Or a fiberball is filled in the first filler space 23, a coconut shell is filled in an upper one of the adjacent two second filler spaces 24, and a fiberball is filled in a lower one of the adjacent two second filler spaces 24. Or coconut shell is filled in the first filling space 23, artificial ceramsite is filled in the upper one of the two adjacent second filling spaces 24, and coconut shell is filled in the lower one of the two adjacent second filling spaces 24.

Three of polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite are sequentially filled in the first filling space 23 and the plurality of second filling spaces 24, namely the polystyrene foam balls are filled in the first filling space 23, the fiber balls are filled in the upper one of the two adjacent second filling spaces 24, and the coconut shells are filled in the lower one of the two adjacent second filling spaces 24. If the number of the second stuffing spaces 24 is more than two, the styrofoam balls, the fiberballs, and the coconut shells are sequentially filled in the upper second stuffing space 24 to the lower second stuffing space 24 among the plurality of second stuffing spaces 24 according to the above-described rule. Or the fiberballs are filled in the first filling space 23, the coconut shells are filled in the upper one of the two adjacent second filling spaces 24, and the artificial porcelain granules are filled in the lower one of the two adjacent second filling spaces 24, and if the number of the second filling spaces 24 is more than two, the fiberballs, the coconut shells, and the artificial porcelain granules are sequentially filled in the upper second filling space 24 to the lower second filling space 24 among the plurality of second filling spaces 24 according to the above-mentioned rule.

The application also provides a preparation zinc powder equipment, as shown in figure 1 and figure 9, the preparation zinc powder equipment includes: an electric furnace 51, an atomizer 52, a high-pressure water pump 53, a vibrating screen 54, a filtering device and a clean water pump 56. An atomizer 52 is disposed downstream of the electric furnace 51, and a first inlet of the atomizer 52 communicates with an outlet of the electric furnace 51. And the high-pressure water pump 53 is arranged at the upstream of the atomizer 52, the outlet of the high-pressure water pump 53 is communicated with the second inlet of the atomizer 52, and the second inlet of the atomizer 52 is provided with a high-pressure water nozzle in a penetrating way. The vibrating screen 54 is arranged downstream of the atomizer 52, an outlet of the vibrating screen 54 is communicated with an inlet of the vibrating screen 54, and a return port of the vibrating screen 54 is communicated with an inlet of the electric furnace 51. A settling vessel 55 is provided downstream of the vibrating screen 54. The first inlet of the settling vessel 55 is in communication with the outlet of the vibrating screen 54, the settling vessel 55 having an openable bottom outlet. The filtration device is arranged downstream of the settling vessel 55 and the liquid inlet 14 of the filtration vessel 10 of the filtration device is in communication with the top outlet 551 of the settling vessel 55. The drain 15 of the filtration vessel 10 of the filtration apparatus, which is the filtration apparatus described above, is in communication with the second inlet 552 of the settling vessel. The clean water pump 56 is arranged at the downstream of the filtering device, the inlet of the clean water pump 56 is communicated with the first liquid outlet 19 of the filtering container 10 of the filtering device, and the outlet of the clean water pump 56 is communicated with the inlet of the high-pressure water pump 53. Because the filter device can solve the problems that the high-pressure water nozzle in the related art is eroded and corroded and the service life is shortened, the equipment for preparing the zinc powder, which comprises the filter device, can solve the corresponding problems. The electric furnace 51 is preferably an induction furnace. The high pressure water pump 53 of the present embodiment has a pressure value of 10Mpa to 20Mpa and a head of 10m to 20 m. The lift of the clean water pump 56 is between 10m and 20 m.

As shown in fig. 1 and 9, after metal zinc is melted in an electric furnace 51, a melt flow is atomized by high-pressure water sprayed by a high-pressure water pump 53, and then condensed to form zinc powder slurry, the zinc powder slurry is classified by a vibrating screen 54, coarse particles return to the electric furnace 51 for reuse, the zinc powder slurry under the screen is settled by a settling vessel 55, the settled zinc powder is used as a displacer, and the zinc-containing reuse clean water on the upper layer of the settling vessel 55 is filtered by two filtering devices. And (4) recycling the filtered clear liquid, and filtering by using a filtering device, and then feeding the filtered clear liquid into a zinc powder collecting, melting and recycling container or feeding the filtered clear liquid into a settling container 55 again. Thus, the zinc powder prepared by the equipment for preparing zinc powder has large surface area and high activity. The clear liquid after being filtered by the filtering device contains less metal zinc particles, and the filtered zinc powder can be recycled. And the method is simple to operate, and can remove the metal zinc particles in the reclaimed water with low cost.

The production of zinc powder by the hydraulic atomization method is a process in which molten zinc is atomized by flowing into a high-pressure atomized water stream through a bottom hole of an atomizer 52. The metal zinc is melted by an induction furnace. Atomizer 52 is preferably a graphite container.

The atomizer 52 comprises a plurality of high-pressure water nozzles, the flow rate of the zinc liquid is 40-80kg/min, and the volume flow rate ratio of water to zinc is 3-4: 1. the surface of the hydraulically atomized zinc powder is rough and uneven, and the surface area of the zinc powder is larger. The zinc powder has no oxide film on the surface and high activity, so that the consumption of the zinc sulfate solution for replacement cobalt removal is 20-40% less than that of air atomized zinc powder.

The zinc powder particles are flocculated by adopting a flocculating agent, the amount of the flocculating agent is 100-1000g/t (calculated according to the amount of the micro-solid), and the flocculating agent is an anionic flocculating agent.

A sludge rake can be additionally arranged at the bottom of the settling container 55 to accelerate the discharge of the precipitated zinc powder particles. The zinc powder particles can be melted and recycled.

An inclined plate is arranged in the settling vessel 55, so that the zinc powder particles can be conveniently deposited and collected.

As shown in fig. 1 and 9, the filtering device comprises two sequentially communicated liquid inlets 14 of the filtering containers 10 of the most upstream filtering device and the top outlet 551 of the settling container 55 are communicated through a first communication pipeline 81, and the first liquid outlet 19 of the filtering container 10 of the upstream filtering device and the liquid inlet 14 of the filtering container 10 of the downstream filtering device in the two adjacent filtering devices are communicated through a second communication pipeline 82. The liquid outlet 15 of the filter vessel 10 of each filter unit communicates with the second inlet 552 of the settling vessel and the first liquid outlet 19 of the filter vessel 10 of the most downstream filter unit communicates with the inlet of the clean water pump 56. The side wall 13 of the filtering container 10 of the filtering device is also provided with an openable liquid inlet 16 and an openable second liquid outlet 17, the liquid inlet 16 of the filtering container 10 of the most upstream filtering device is communicated with the first communicating pipeline 81 through a third communicating pipeline 83, the zinc powder preparation equipment further comprises a recovery container, the second communicating pipelines 82 of the two adjacent filtering devices are communicated with the liquid inlet 16 of the filtering container 10 of the downstream filtering device through a fourth communicating pipeline 84, and the second liquid outlet 17 of the filtering container 10 of each filtering device is communicated with the recovery container. The recycled clean water is favorably fed in through the liquid inlet 16 and discharged from the second liquid outlet 17, so that the filtering medium in the filler space is discharged, and finally the filtering medium is discharged into a recovery container. The recycling container can be a recycling bin or a cleaning device, when the recycling container is the recycling bin, the filter medium does not need to be recycled, when the recycling container is the cleaning device, the filter medium needs to be recycled, and the cleaning device is a stirring barrel.

Of course, the number of the filter devices is not limited to two, and may be one, three, or more.

As shown in fig. 1, 4 and 9, the filter medium 30 includes a plurality of floating orifice plates 22, a first packing space 23 formed between the uppermost floating orifice plate 22 and the stopper orifice plate 21, and a second packing space 24 formed between the remaining adjacent two floating orifice plates 22. Under the condition that the zinc powder content of the liquid entering the filter container 10 through the liquid inlet 14 is more than 500ppm, one or two of coconut shells and artificial ceramsite are filled in the first filler space 23 and the second filler space 24 of the filter container 10 of the most upstream filter device, two or three of polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite in the filter containers 10 of the rest filter devices are sequentially filled in the first filler space 23 and the second filler space 24, or two or three of polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite in the filter containers 10 of the rest filter devices are sequentially filled in the first filler space 23 and the plurality of second filler spaces 24. Therefore, through the selection of different filter media, the metal zinc particles are easy to adhere to the filter media, the filtering effect is good, and the content of the metal zinc particles in the filter media after filtering and recycling clean water is lower than 10 ppm. The damage of the recycled clean water to the high-pressure water nozzle is reduced, and the service life is effectively prolonged. The content of metal zinc particles in the clean water filtered and recycled by the specific filter medium is 6 ppm.

An upper second packing space 24 of the plurality of second packing spaces 24 into a lower second packing space 24. When the zinc powder content of the liquid introduced into the filter container 10 through the inlet 14 is greater than 500ppm, one of the coconut shell and the artificial ceramsite is filled in the first filling space 23 and the second filling space 24 of the filter container 10 of the most upstream filter device, which means that the coconut shell is respectively filled in the first filling space 23 and the second filling space 24 of the filter container 10 of the most upstream filter device, or the artificial ceramsite is respectively filled in the first filling space 23 and the second filling space 24 of the filter container 10 of the most upstream filter device.

Under the condition that the zinc powder content of the liquid entering the filtering container 10 through the liquid inlet 14 is more than 500ppm, the first filling space 23 and the second filling space 24 of the filtering container 10 of the most upstream filtering device are filled with two of coconut shells and artificial ceramsite, namely the coconut shells and the artificial ceramsite are respectively filled in the first filling space 23 and the second filling space 24 of the filtering container 10 of the most upstream filtering device.

Two of the styrofoam balls, fiberballs, coconut shells, and artificial ceramsite in the filter container 10 of the remaining filter device are sequentially filled in the first filling space 23 and one second filling space 24, or two or three of the styrofoam balls, fiberballs, coconut shells, and artificial ceramsite in the filter container 10 of the remaining filter device are sequentially filled in the first filling space 23 and the plurality of second filling spaces 24. In this case, reference may be made to the way of filling polystyrene foam balls, fiber balls, coconut shells and artificial ceramsite in the case that the zinc powder content of the liquid entering the filtration container 10 through the liquid inlet 14 is between 100ppm and 500ppm, and the description thereof is omitted.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A filter device, comprising:

the filtering container (10) comprises a top wall (11), a bottom wall (12) and a side wall (13) connected between the top wall (11) and the bottom wall (12), wherein an openable liquid inlet (14) is formed in the top wall (11), an openable liquid outlet (15) is formed in the bottom wall (12), an openable feed inlet (18) and an openable first liquid outlet (19) are formed in the side wall (13), and the feed inlet (18) is located below the first liquid outlet (19);

a stop orifice (21) located within the filtration vessel (10) and arranged vertically with respect to the sidewall (13), the stop orifice (21) being located between the feed inlet (18) and the first outlet (19);

the floating pore plate (22) is positioned in the filtering container (10) in a suspending manner, the floating pore plate (22) is positioned below the stopping pore plate (21), the floating pore plate (22) and the side wall (13) jointly enclose a filling space, the feeding hole (18) is communicated with the filling space, and the filling space is filled with a filtering medium (30);

the guide cylinder (25) is arranged in the filtering container (10) and communicated with the liquid inlet (14), and the guide cylinder (25) penetrates through the stop pore plate (21) and the floating pore plate (22);

the stop orifice (21) is adjustably arranged in the filter container (10) by means of a position adjustment structure (40), the position adjustment structure (40) comprising a latching structure (41) telescopically arranged on the side wall (13);

the clamping and locking structure (41) comprises an upper blocking piece (411) and a lower blocking piece (412) which are arranged at intervals, and the blocking orifice plate (21) is arranged between the upper blocking piece (411) and the lower blocking piece (412).

2. The filtering device according to claim 1, characterized in that the side wall (13) is further provided with an openable liquid inlet (16) and an openable second liquid outlet (17), and the liquid inlet (16), the second liquid outlet (17) and the feed inlet (18) have the same height on the side wall.

3. The filtration device of claim 1,

the position adjusting structure (40) further comprises a magnetic component (42) and a controller connected with the magnetic component (42), the controller is arranged outside the filtering container (10), the magnetic component (42) is arranged between the side wall (13) and the upper stopper (411) and between the side wall (13) and the lower stopper (412), the position adjusting structure (40) further comprises a first elastic piece, the first elastic piece is arranged between the side wall (13) and the upper stopper (411) and between the side wall (13) and the lower stopper (412), the controller controls the magnetic component (42) to work, so that the first elastic piece is compressed, the upper stopper (411) or the lower stopper (412) is in a retracted position, and the controller controls the magnetic component (42) to stop working, the first elastic piece is elastically reset so that the upper stopper (411) or the lower stopper (412) is switched from the retracted position to the extended position; alternatively, the first and second electrodes may be,

the position adjusting structure (40) also comprises a magnetic component (42) and a controller connected with the magnetic component (42), the controller is arranged outside the filtering container (10), the magnetic attraction component (42) is arranged between the side wall (13) and the upper stopper (411), the position adjusting structure (40) further comprises a first elastic piece between the side wall (13) and the upper stopper (411), the controller controls the magnetic attraction component (42) to work, so that the first elastic element is compressed and the upper stopper (411) is in a retracted position, the controller controls the magnetic attraction component (42) to stop working, the first elastic piece is elastically reset to enable the upper stopper (411) to be switched from the retracted position to the extended position, the lower stopper (412) is arranged on the side wall (13) through a second elastic piece.

4. The filtering device according to claim 2, characterized in that said stop orifice (21) and said floating orifice (22) are both adjustably arranged inside said filtering receptacle (10) by means of a position adjustment structure (40), said position adjustment structure (40) comprising a plurality of latch structures (41) telescopically arranged on said side wall (13), said latch structures (41) comprising a plurality of said latch structures (41) being arranged on said side wall (13) at intervals along a vertical axis of said filtering receptacle (10), said stop orifice (21) and said floating orifice (22) both adjustably switching positions between said plurality of latch structures (41).

5. The filtration device of claim 4,

the filter medium (30) comprises polystyrene foam balls, fiber balls, coconut shells, artificial ceramsite and artificial synthetic fibers, the number of the floating pore plates (22) is multiple, the filling space comprises a first filling space (23) formed between the stop pore plate (21) and the floating pore plate (22) positioned on the uppermost layer, and the filling space further comprises a second filling space (24) formed between the other two adjacent floating pore plates (22);

in the case where the zinc dust content of the liquid entering the filtration vessel (10) through the liquid inlet (14) is less than 100ppm, the polystyrene foam balls, the fiber balls, and the synthetic fibers are alternatively filled in the first filler space (23) and the second filler space (24);

two of the polystyrene foam balls, the fiber balls, the coconut shells and the artificial ceramsite are filled in the first filling space (23) and the second filling space (24) in turn under the condition that the zinc powder content of the liquid entering the filtering container (10) through the liquid inlet (14) is between 100ppm and 500ppm, and the second filling space (24) is one, or,

under the condition that the zinc powder content of the liquid entering the filtering container (10) through the liquid inlet (14) is between 100ppm and 500ppm, and when the second filling spaces (24) are multiple, two or three of the polystyrene foam balls, the fiber balls, the coconut shells and the artificial ceramsite are sequentially filled in the first filling space (23) and the second filling spaces (24).

6. An apparatus for producing zinc powder, comprising:

an electric furnace (51);

an atomizer (52) disposed downstream of the electric furnace (51), a first inlet of the atomizer (52) communicating with an outlet of the electric furnace (51);

the high-pressure water pump (53) is arranged at the upstream of the atomizer (52), the outlet of the high-pressure water pump (53) is communicated with the second inlet of the atomizer (52), and a high-pressure water nozzle is arranged at the second inlet of the atomizer (52) in a penetrating manner;

the vibrating screen (54) is arranged at the downstream of the atomizer (52), the outlet of the vibrating screen (54) is communicated with the inlet of the vibrating screen (54), and the return port of the vibrating screen (54) is communicated with the inlet of the electric furnace (51);

a settling vessel (55) disposed downstream of the shaker (54), a first inlet of the settling vessel (55) in communication with the slurry outlet of the shaker (54), the settling vessel (55) having an openable bottom outlet;

-a filtration device arranged downstream of the settling vessel (55), the liquid inlet (14) of the filtration vessel (10) of the filtration device being in communication with the top outlet (551) of the settling vessel (55), the liquid outlet (15) of the filtration vessel (10) of the filtration device being in communication with the second inlet (552) of the settling vessel, the filtration device being as defined in any one of claims 1 to 5;

and the clean water pump (56) is arranged at the downstream of the filtering device, the inlet of the clean water pump (56) is communicated with the first liquid outlet (19) of the filtering container (10) of the filtering device, and the outlet of the clean water pump (56) is communicated with the inlet of the high-pressure water pump (53).

7. The apparatus for producing zinc powder of claim 6, wherein,

the filtering device comprises a plurality of sequentially communicated liquid inlets (14) of the filtering containers (10) of the most upstream filtering device and the top outlet (551) of the settling container (55) are communicated through a first communication pipeline (81), and the first liquid outlet (19) of the filtering container (10) of the upstream filtering device and the liquid inlet (14) of the filtering container (10) of the downstream filtering device in two adjacent filtering devices are communicated through a second communication pipeline (82);

the liquid outlet (15) of the filtering container (10) of each filtering device is communicated with the second inlet (552) of the settling container, and the first liquid outlet (19) of the filtering container (10) of the most downstream filtering device is communicated with the inlet of the clean water pump (56);

the side wall (13) of the filtering container (10) of the filtering device is also provided with a liquid inlet (16) and a second liquid outlet (17), the liquid inlet (16) of the filtering container (10) of the filtering device at the most upstream is communicated with the first communicating pipeline (81) through a third communicating pipeline (83), the zinc powder preparation equipment further comprises a recovery container, two adjacent second communicating pipelines (82) and two adjacent downstream in the filtering device are communicated with the liquid inlet (16) of the filtering container (10) of the filtering device through a fourth communicating pipeline (84), and the second liquid outlet (17) of the filtering container (10) of each filtering device is communicated with the recovery container.

8. The apparatus for producing zinc powder of claim 7, wherein,

the filter medium (30) comprises polystyrene foam balls, fiber balls, coconut shells, artificial ceramsite and artificial synthetic fibers, the number of the floating pore plates (22) is multiple, the filling space comprises a first filling space (23) formed between the floating pore plate (22) on the uppermost layer and the stop pore plate (21), and the filling space further comprises a second filling space (24) formed between the rest two adjacent floating pore plates (22);

under the condition that the zinc powder content of the liquid entering the filtering container (10) through the liquid inlet (14) is more than 500ppm, one or two of the coconut shell and the artificial ceramsite are filled in the first filling space (23) and the second filling space (24) of the filtering container (10) of the most upstream filtering device,

two of the polystyrene foam balls, the fiber balls, the coconut shells and the artificial ceramsite in the remaining filter containers (10) of the filter device are sequentially filled in the first filling space (23) and one of the second filling spaces (24), or two or three of the polystyrene foam balls, the fiber balls, the coconut shells and the artificial ceramsite in the remaining filter containers (10) of the filter device are sequentially filled in the first filling space (23) and the plurality of second filling spaces (24).

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