Rotary disc filter washing dryer

Abstract

The utility model relates to a rotary table type filter washing dryer, including the frame connected with base, the pivot is established at base and can rotate around vertical axis with base rotatable disc, the filter plate established above rotatable disc, the material spray head connected in material pipe one end, the scraper established above filter plate, hot -blast unit and at least one washing spray head, form the moulding groove on rotatable disc, and filter plate covers in the upper end of moulding groove, rotatable disc lower part is equipped with the swivel joint with moulding groove intercommunication, and the lower end of swivel joint is equipped with the filtrate pipe matched with pump, can make the moulding groove space under filter plate cover form the pump unit of vacuum cavity or negative pressure cavity. Material spray head, washing spray head, hot -blast unit exhaust end and scraper, in the rotatable disc rotation direction, interval arrangement in proper order. The present application can reduce the impact, extrusion, friction intensity that material receives in drying separation process, can relatively gently realize separation drying purpose.

Description

Technical Field

[0001] This utility model belongs to the technical field of slurry drying equipment, specifically relating to a rotary disc filter washing and drying device. Background Technology

[0002] In existing technologies, slurry drying processes often utilize continuous centrifuges, conveyor belt (slurry) filters, or rotary drum filters. These methods employ high-speed centrifugal force or extrusion to separate the liquid and solid components of the material / slurry, achieving solid-liquid separation. However, when using existing slurry dryers to process materials sensitive to impact or extrusion (friction) intensity for solid-liquid separation, it inevitably has an adverse impact on the quality of the target product. Utility Model Content

[0003] To overcome the above problems, this utility model provides a rotary filter washing and drying device, which can reduce the impact, squeezing and friction intensity of materials during the solid-liquid separation process, and can gently complete the solid-liquid separation of slurry.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a rotary filter washing and drying device, including a frame connected to a base, a rotary table pivotally mounted on the base and capable of rotating relative to the base about a vertical axis, a filter plate disposed above the rotary table, a material nozzle connected to one end of a material pipe, a scraper disposed above the filter plate, a hot air unit, and at least one washing nozzle. It may also include a sliding groove disposed on the base or the frame, with one end corresponding to the outer end of the scraper and obliquely below it, for conveying the solid material scraped off the filter plate by the scraper to the outside.

[0005] A groove is formed on the upper part of the turntable, and a filter plate covers the upper port of the groove. A rotary joint communicating with the groove is provided on the lower part of the turntable, and a filtrate pipe matching the pump is configured at the lower end of the rotary joint. The pump can create a vacuum chamber or a negative pressure chamber in the space of the groove covered by the filter plate through the filtrate pipe.

[0006] In the direction of rotation of the turntable, material nozzles, washing nozzles, exhaust ends of the hot air unit, and scrapers are arranged alternately, with the nozzle openings of the material nozzles, the nozzle openings of the washing nozzles, the air outlets of the exhaust ends, and the scraper blades all facing the upper surface of the filter plate.

[0007] Optionally, multiple washing nozzles are provided and arranged alternately in the circumferential direction, and all are positioned between the material nozzle and the exhaust end of the hot air unit in the rotation direction of the turntable.

[0008] Optionally, to ensure the material is evenly and fully sprayed onto the filter plate surface and to improve processing capacity, both the material nozzles and the washing nozzles are made into long strips, with their lengths along the radial direction of the filter plate. This allows the material to have a larger spray area on the filter plate and to be thoroughly washed.

[0009] Optionally, the filter plate is disc-shaped. The scraper is elongated and arranged radially along the filter plate, with its outer end extending outward relative to the edge of the filter plate.

[0010] Optionally, a cone with its smaller diameter end facing upwards is provided at the axial position of the filter plate. This ensures that the radial inner ends of the material nozzle, washing nozzle, and scraper are in close contact with the root of the cone.

[0011] Optionally, a support arm matching the material pipe is provided on the upper part of the frame.

[0012] Both ends of the first support arm are matched with the frame through a sliding structure, and bolts are provided at the ends of the first support arm. The bolts can selectively switch the first support arm between a state in which it can be fixedly connected to the frame and a state in which it can slide relative to the frame.

[0013] The support arm has a groove structure along its length, and the material tube has a slide rod that matches the groove structure. The slide rod has a nut assembly that can selectively switch the material tube between a fixed connection with the support arm and a relative sliding state.

[0014] The direction of the sliding of the support arm relative to the frame is perpendicular to the direction of the sliding of the material pipe relative to the support arm.

[0015] Optionally, a second support arm matching the scraper is provided on the upper part of the frame.

[0016] The two ends of the second support arm are matched with the frame through a sliding structure, and bolts are provided at the ends of the second support arm. The bolts can selectively switch the second support arm between a fixed connection with the frame and a relative sliding state.

[0017] The second support arm is provided with a groove structure along its length, and a sliding rod that matches the scraper is provided on the connecting rod that matches the groove structure. A nut assembly is provided on the sliding rod, and the nut assembly can selectively switch the scraper between a state in which it can be fixedly connected to the second support arm and a state in which it can slide relative to the support arm.

[0018] The direction of the sliding of the second support arm relative to the frame is perpendicular to the direction of the sliding of the scraper relative to the second support arm.

[0019] Optionally, a fan-shaped hot air hood is provided at the exhaust end of the hot air unit, and the hot air hood is located downstream of the scraper. The exhaust port of the hot air hood is opposite to the upper surface of the filter plate.

[0020] The beneficial effects of this utility model are: the rotary filter washing and drying device of this utility model can reduce the impact, compression and friction intensity of materials during the drying and separation process. It is particularly suitable for the drying and separation of materials that are sensitive to impact, compression and friction. It can make the solid-liquid separation process of slurry gentler, which helps to protect the target product from excessive impact, compression or friction during the separation process and helps to improve the stability and reliability of the target product quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application.

[0022] Figure 2 This is a top view diagram of the filter plate with material nozzles, washing nozzles, etc.

[0023] Figure 3 A schematic diagram of the axonal structure when material nozzles, washing nozzles, etc. are arranged on the filter plate.

[0024] Figure 4 This is a partial cross-sectional structural diagram of this application.

[0025] Figure 5 for Figure 1 The grayscale image of the view shown.

[0026] Figure 6 for Figure 4 The grayscale image of the view shown.

[0027] In the diagram: 10 Base, 11 Top plate, 12 Drive motor, 20 Frame, 30 Turntable, 31 Type trough, 40 Filter plate, 41 First filtration zone, 42 Second filtration zone, 43 Third filtration zone, 50 Material pipe, 51 Material nozzle, 52 Support arm one, 60 Filtration pipe, 61 Rotary joint, 62 Cone, 70 Scraper, 71 Straight arm two, 80 Slide chute, 90 Hot air hood, 100 Washing nozzle. Detailed Implementation

[0028] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0029] like Figures 1 to 4 A rotary filter washer-dryer is shown (see also: Figure 5 , Figure 6 The system includes a frame 20 connected to a base 10, a turntable 30 pivotally mounted on the base 10 and rotatable relative to the base 10 about a vertical axis, a filter plate 40 positioned above the turntable 30, a material nozzle 51 connected to one end of a material pipe 50 (slurry pipe), a scraper 70 positioned above the filter plate 40, a groove 80 positioned on the base 10 with one end corresponding to the outer end of the scraper 70 at an angle below it, a hot air unit, and at least one washing nozzle 100. The length extension directions of the material nozzle 51, the scraper 70, and the washing nozzle 100 are all along the radial direction of the filter plate 40.

[0030] The base 10 is cylindrical, and the frame 20 is cubic or cuboid, with the lower end of the base 10 fixedly connected to the bottom plate of the frame 20. The material pipe 50 (including the material nozzle 51 fixedly connected thereto), the washing nozzle 100, and the scraper 70 are all fixedly mounted on the upper part of the frame 20, so that the material nozzle 51, the washing nozzle 100, and the scraper 70 can be suspended directly above the base 10.

[0031] A drive motor 12 (either a pneumatic motor or an electric motor) is fixedly installed on the top plate 11 at the upper part of the base 10, and the drive motor 12 is matched with the gear transmission mechanism provided between the base 10 and the turntable 30, so that the drive motor 12 can drive the turntable 30 to rotate relative to the base 10 around the vertical axis, and can carry the material sprayed on the filter plate 40 to rotate and move, so as to realize the process of being washed at least once, then dried, and finally scraped off the filter plate 40.

[0032] A groove 31 is formed on the upper part of the turntable 30, and the filter plate 40 covers the upper port of the groove 31, making the bottom space of the groove 31 a (relatively sealed) enclosed space. The groove 31 is preferably a cylindrical countersunk hole structure. At the same time, a rotary joint 61 communicating with the groove 31 is provided at the lower part of the turntable 30, and a filtrate pipe 60 is arranged at the lower end of the rotary joint 61. The upper part of the rotary joint 61 is fixedly connected to the bottom wall of the groove 31, so that when the turntable 30 rotates relative to the base 10, the filtrate pipe 60 will not rotate. The axial cavity of the rotary joint 61 can connect the groove 31 and the filtrate pipe 60, and can extract / discharge the filtrate (containing the liquid components of the material and washing liquid) drawn to the bottom of the groove 31 to the outside through the filtrate pipe 60.

[0033] A pump (not shown in the figure, but could be a vacuum pump) is installed at the other end of the filtrate pipe 60. Activating the pump creates a vacuum or negative pressure chamber at the bottom of the molded groove 31 covered by the filter plate 40. This allows the liquid components of the material / slurry sprayed onto the filter plate 40, as well as the washing liquid, to pass downwards through the filter plate 40 into the bottom of the molded groove 31 (under vacuum / negative pressure conditions). Finally, the liquid is extracted from the molded groove 31 via the filtrate pipe 60 (or vacuum pipe). Solids in the slurry are blocked by the filter plate 40 and trapped on its upper surface. As the turntable 30 rotates, the solids gradually move towards the scraper 70 and are eventually scraped off the filter plate 40 by the scraper 70. The scraped solids are then transported along the chute 80 to a relevant container for collection or to the next processing step.

[0034] Along the rotation direction of the turntable 30 (counterclockwise in the diagram), the material nozzle 51, the washing nozzle 100, the exhaust end of the hot air unit (including the hot air hood 90 in the diagram), and the scraper 70 are arranged alternately and sequentially, with the nozzle openings of the material nozzle 51, the nozzle openings of the washing nozzle 100, the air outlet of the exhaust end, and the scraper blade of the scraper 70 all facing the upper end face of the filter plate 40. The washing nozzle 100 is connected to the rinsing liquid unit (not shown in the diagram) via a pipe, allowing for controllable supply of rinsing liquid to the washing nozzle 100.

[0035] The working process is as follows: The drive motor 12 drives the turntable 31 to rotate synchronously / together with the filter plate 40. The material / slurry is evenly coated on the filter plate 40 through the material nozzle 51. As the turntable 30 rotates, the material is always subjected to the vacuum force below the filter plate 40 during one revolution, which causes the liquid components in the material to pass through the filter plate 40 into the lower cavity of the molded groove 31, and flow out through the filtrate pipe 60 (vacuum pipe) connected by the rotary joint 61, and be transported to the outside. During this process, the solid components in the material are trapped on the filter plate 40. A filter cake is formed. As the turntable 30 continues to rotate, the filter cake passes through at least one washing nozzle (or rinsing liquid nozzle) and is washed by the rinsing liquid. The rinsing liquid is also immediately drawn through the filter plate 40 and discharged into the mold trough 31. As the turntable 30 continues to rotate, the washed filter cake is heated by the hot air hood 90, which causes the residual liquid components to evaporate and the filter cake to dry. The dried filter cake continues to rotate with the turntable 30. When it passes the position of the scraper 70, it can be scraped off the filter plate 40 by the scraper 70 and fall into the chute 80 to slide out and be collected.

[0036] As can be seen, the technical solution of this application can perform a continuous vacuum filtration and drying process for materials / slurries, integrating continuous filtration, washing, and drying into a single process, achieving continuous solid-liquid separation, which is beneficial for matching continuous production lines. Furthermore, it features low energy consumption, eliminating the need for high-speed rotation like a centrifuge; only a slow 30° rotation of the turntable is required for solid-liquid separation. The separation process is gentle, making it suitable for filtering materials sensitive to friction or impact.

[0037] The filter plate 40 is disc-shaped. The scraper 70 is elongated and arranged radially along the filter plate 40, with its outer end extending outward relative to the edge of the filter plate 40. This allows the solid material (filter cake) scraped off the filter plate 40 to flow smoothly from the outer end of the scraper 70 into the channel of the chute 80 and be discharged.

[0038] like Figure 2 , Figure 3 As shown, there are two washing nozzles 100, arranged alternately in the circumferential direction, and both are positioned between the material nozzle 51 and the exhaust end of the hot air unit (i.e., the hot air hood 90) in the rotation direction of the turntable 30 (i.e., the ω direction shown in the figure). Thus, the upper surface of the filter plate 40 is divided into multiple fan-shaped areas: a first filtration area 41 between the material nozzle and one washing nozzle 100, a second filtration area 42 between the two washing nozzles 100, a third filtration area 43 between the other washing nozzle 100 and the hot air hood 90, and a drying area covered by the hot air hood 90.

[0039] A cone 62 with its small diameter end facing upwards is provided at the axial position of the filter plate 40. The cone 62 can be inserted and connected to the protrusion formed at the axial position of the turntable 30. By setting the cone 62, the material can be prevented from accumulating towards the center (axial position) during rotation, thus preventing the problem of excessive local thickness and insufficient washing and drying.

[0040] To achieve the adjustment of the position of the material nozzle 51 relative to the filter plate 40 and the adjustment of the position of the scraper 70 relative to the filter plate 40, the following design can be made.

[0041] The upper part of the frame 20 is provided with a support arm 52 that matches the material pipe 50, and the length of the support arm 52 extends in the front-back direction.

[0042] Both ends of the support arm 52 are matched with the frame 20 through a sliding structure, allowing the support arm 52 to slide relative to the frame 20 in the left-right direction. At the same time, a bolt is provided at the end of the support arm 52, and the bolt can selectively switch the support arm 52 between a state in which it can be fixedly connected to the frame 20 and a state in which it can slide relative to the frame 20.

[0043] The support arm 52 is provided with a groove structure along its length, and the material pipe 50 is provided with a sliding rod that matches the groove structure, allowing the material pipe 51 (or the material nozzle 51) to slide relative to the support arm 52 in the front-back direction. A nut assembly is provided on the sliding rod, and this nut assembly can selectively switch the material pipe 50 between a state where it is fixedly connected to the support arm 52 and a state where it can slide relative to it.

[0044] By making the direction in which the support arm 52 slides relative to the frame 20 perpendicular to the direction in which the material pipe 50 slides relative to the support arm 52, the position of the material nozzle 51 can be adjusted in the spatial plane, that is, the position of the material nozzle 51 relative to the filter plate 40 can be adjusted.

[0045] The frame 20 is provided with a second support arm 71 that matches the scraper 70 (the connecting rod configured on it), and the length direction of the second support arm 71 extends parallel to the length direction of the first support arm 52, that is, it extends in the front-back direction.

[0046] Both ends of the second support arm 71 are matched with the frame 20 through a sliding structure, allowing the second support arm 71 to slide relative to the frame 20 in the left-right direction. At the same time, a bolt is provided at the end of the second support arm 71, and the bolt can selectively switch the second support arm 71 between a state in which it can be fixedly connected to the frame 20 and a state in which it can slide relative to the frame 20.

[0047] The second support arm 71 is provided with a groove structure along its length, and a sliding rod that matches the scraper 70 is provided on the connecting rod, allowing the scraper 70 to slide relative to the second support arm 71 in the front-back direction. A nut assembly is provided on the sliding rod, and this nut assembly can selectively switch the scraper 70 between a state in which it can be fixedly connected to the second support arm 71 and a state in which it can slide relative to it.

[0048] By making the direction in which the second support arm 71 slides relative to the frame 20 perpendicular to the direction in which the scraper 70 slides relative to the second support arm 71, the position of the scraper 70 can be adjusted in the spatial plane, that is, the position of the scraper 70 relative to the filter plate 40 can be adjusted.

[0049] A fan-shaped hot air hood 90 is provided at the exhaust end of the hot air unit, and the hot air hood 90 is located downstream of the scraper 70. The exhaust port of the hot air hood 90 is opposite to the upper surface of the filter plate 40, and there is a vertical distance between them. The hot air hood 90 is provided with a docking port for connecting to a hot air blower through a pipe, so that hot air delivered by the hot air blower can be introduced into the cavity of the hot air hood 90 through the docking port, and the material rotating and moving to the lower port of the hot air hood 90 can be dried.

[0050] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A rotary filter washing and drying device, comprising a material nozzle (51) connected to one end of a material pipe (50); characterized in that: It also includes a frame (20) connected to the base (10), a turntable (30) pivotally mounted on the base (10) and rotatable relative to the base (10) about a vertical axis, a filter plate (40) above the turntable (30), a scraper (70) above the filter plate (40), a hot air unit, and at least one washing nozzle (100). A groove (31) is formed on the upper part of the turntable (30), and the filter plate (40) is sealed on the upper port of the groove (31); A rotary joint (61) communicating with the molded groove (31) is provided at the lower part of the turntable (30), and a filter pipe (60) matching the pump is provided at the lower end of the rotary joint (61); the pump can make the space of the molded groove (31) covered by the filter plate (40) into a vacuum chamber or a negative pressure chamber through the filter pipe (60). In the rotation direction of the turntable (30), material nozzles (51), washing nozzles (100), exhaust end of hot air unit and scraper (70) are arranged alternately, and the nozzle opening of material nozzle (51), the nozzle opening of washing nozzle (100), the air outlet of the exhaust end and the scraper blade of scraper (70) are all facing the upper surface of filter plate (40).

2. The rotary filter washing and drying unit according to claim 1, characterized in that: Multiple washing nozzles (100) are provided and are arranged alternately in the circumferential direction, and are all placed between the material nozzle (51) and the exhaust end of the hot air unit.

3. The rotary filter washing and drying unit according to claim 1, characterized in that: Both the material nozzle (51) and the washing nozzle (100) are long strips, and their length direction is along the radial direction of the filter plate (40).

4. The rotary filter washing and drying unit according to claim 1, characterized in that: It also includes a groove (80) provided on the base (10) or on the frame (20) with one end corresponding to the outer end of the scraper (70) at an angle below it; the filter plate (40) is disc-shaped; the scraper (70) is strip-shaped and arranged radially along the filter plate (40), with the outer end of the scraper (70) extending outward relative to the edge of the filter plate (40).

5. The rotary filter washing and drying unit according to claim 1, characterized in that: A cone (62) with its small diameter end facing upward is provided at the axial position of the filter plate (40).

6. The rotary filter washing and drying unit according to claim 1, characterized in that: A support arm (52) matching the material pipe (50) is provided on the upper part of the frame (20); the two ends of the support arm (52) are matched with the frame (20) through a slide structure, and a bolt is provided at the end of the support arm (52), and the bolt can selectively switch the support arm (52) between a state in which it can be fixedly connected with the frame (20) and a state in which it can slide relative to the frame. A groove structure along its length is provided on the support arm (52), and a slide rod that matches the groove structure is provided on the material tube (50); a nut assembly is provided on the slide rod, and the nut assembly can selectively switch the material tube (50) between a state in which it can be fixedly connected to the support arm (52) and a state in which it can slide relative to the support arm (52). The direction of sliding of support arm 1 (52) relative to frame (20) is perpendicular to the direction of sliding of material pipe (50) relative to support arm 1 (52).

7. The rotary filter washing and drying unit according to claim 1, characterized in that: A second support arm (71) matching the scraper (70) is provided on the upper part of the frame (20); the two ends of the second support arm (71) are matched with the frame (20) through a slide structure, and a bolt is provided at the end of the second support arm (71), and the bolt can selectively switch the second support arm (71) between a state in which it can be fixedly connected to the frame (20) and a state in which it can slide relative to the frame. The second support arm (71) is provided with a groove structure along its length direction, and a sliding rod that matches the scraper (70) is provided on the connecting rod that matches the groove structure, and a nut assembly is provided on the sliding rod, and the nut assembly can selectively switch the scraper (70) between a state in which it can be fixedly connected to the second support arm (71) and a state in which it can slide relative to the support arm (71). The direction of sliding of the second support arm (71) relative to the frame (20) is perpendicular to the direction of sliding of the scraper (70) relative to the second support arm (71).

8. The rotary filter washing and drying unit according to claim 1, characterized in that: A fan-shaped hot air hood (90) is provided at the exhaust end of the hot air unit and is located on the downstream side of the scraper (70); the exhaust port of the hot air hood (90) is opposite to the upper surface of the filter plate (40).

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