Solid-liquid separation device of filter residue system

Abstract

The utility model provides a kind of solid-liquid separation device of filter residue system, including rack, rotary filter drum and spiral extruder, the rotary filter drum is installed in the inside of the rack, the spiral extruder is installed in the bottom of the rack, the inner wall of the rotary filter drum is equipped with spiral propeller blade, the propelling direction of the spiral propeller blade is opposite with the propelling direction of the spiral extruder, the discharge port of the rotary filter drum is located above the feed inlet of the spiral extruder, the feed inlet of the rotary filter drum is located above the tail end of the spiral extruder.The device makes rotary filter drum and spiral extruder as the hierarchical structure of upper and lower two layers install on rack, avoid because two vertical intersection setup and occupy too much three-dimensional space, while having rotary filter drum primary screening function and the depth solid-liquid separation structure of spiral extruder, still can reduce the overall space occupation of the device.

Description

Technical Field

[0001] This utility model relates to a solid-liquid separation device, specifically, to a solid-liquid separation device for a filter residue system. Background Technology

[0002] Currently, when solid-liquid separation is required for filter residue with high water content, an integrated device combining a primary screen and a screw extruder is typically used to ensure efficiency and effectiveness. The primary screen, as a pretreatment step in solid-liquid separation, quickly removes most of the water from the filter residue. The filtered residue after primary screening is then conveyed and pressurized by the screw blades within the screw extruder, achieving deep dehydration. This approach leverages both the efficient pretreatment capabilities of the primary screen and the deep dehydration characteristics of the screw extruder, resulting in complementary advantages in energy consumption, processing efficiency, and product quality. This leads to significant advantages in energy economy, equipment durability, and controllable product quality.

[0003] For example, the cylindrical strip solid-liquid separator disclosed in Chinese invention patent CN201410039781.5 and the combined high-efficiency solid-liquid separator disclosed in Chinese utility model patent CN201620285174.1 both use a drum filter (i.e., a rotating filter cylinder) as the primary screening method. The drum filter has spiral blades inside, and the material is propelled through the spiral blades within the drum filter. The material after primary screening is transferred into a screw extruder to complete solid-liquid separation. These solid-liquid separation devices using rotating filter cylinders and screw extruders typically employ a perpendicular arrangement of the rotating filter cylinder and screw extruder to facilitate the centralized transport of the primary filtered filter residue to the spiral extrusion blades of the screw extruder. While this achieves solid-liquid separation, the perpendicular arrangement of the rotating filter cylinder and screw extruder results in a large overall size of the equipment, occupying a significant amount of vertical space, making it particularly unsuitable for scenarios with limited space.

[0004] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a solid-liquid separation device for a filter cake system. By arranging rotating filter cylinders and a screw extruder with opposite propulsion directions in a hierarchical structure on the frame, the overall space occupied by the equipment can be reduced.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a frame, a rotating filter cylinder, and a screw extruder. The rotating filter cylinder is installed inside the frame, and the screw extruder is installed at the bottom of the frame. The inner wall of the rotating filter cylinder is equipped with screw propulsion blades, and the propulsion direction of the screw propulsion blades is opposite to that of the screw extruder. The discharge port of the rotating filter cylinder is located above the feed port of the screw extruder, and the feed port of the rotating filter cylinder is located above the tail end of the screw extruder.

[0007] Based on the above, a first rotating shaft is installed on the frame, and the rotating filter cartridge is installed on the first rotating shaft, and the rotating filter cartridge rotates with the first rotating shaft.

[0008] Based on the above, it also includes a screw feeder, which shares the first rotating shaft with the rotating filter cartridge. The screw feeder includes a feed cylinder and screw feed blades. The feed cylinder is mounted on the frame, and the screw feed blades are mounted on the first rotating shaft. The discharge end of the feed cylinder is inserted into the inner cavity of the rotating filter cartridge to convey material into the rotating filter cartridge.

[0009] Based on the above, the end plate of the feed end of the rotating filter cartridge is rotatably connected to the body of the feed cartridge, and the end plate of the discharge end of the rotating filter cartridge is mounted on the first rotating shaft.

[0010] Based on the above, a feed hopper is installed on the side wall of the screw feeder, and a feed protective cover is installed on the feed hopper.

[0011] Based on the above, the screw extruder is provided with a second rotating shaft, the first rotating shaft and the second rotating shaft are parallel, and a reduction motor is provided on the upper part of the frame. The first rotating shaft, the second rotating shaft and the reduction motor are cascaded and driven by gears and chains on the same side of the frame.

[0012] Based on the above, the frame is provided with a primary filtration water tank, the rotating filter cartridge is installed in the primary filtration water tank, and the bottom of the primary filtration water tank is provided with a drainage slope and a drain pipe.

[0013] Based on the above, the screw extruder is provided with an extrusion filter cylinder at its tail end, and a secondary filtration water tank is provided below the extrusion filter cylinder. The drain pipe of the primary filtration water tank is connected to the secondary filtration water tank.

[0014] Based on the above, the primary filtration tank is equipped with self-cleaning nozzles arranged at equal intervals along the axial direction of the rotating filter cartridge, and the self-cleaning nozzles face the rotating filter cartridge.

[0015] Based on the above, a transfer chute is provided between the discharge port of the rotary filter cartridge and the feed port of the screw extruder, and the transfer chute is installed on the frame.

[0016] This utility model has substantial features and progress compared to the prior art. Specifically, this device installs the rotary filter cartridge and the screw extruder as a two-layer hierarchical structure on the frame, avoiding the occupation of too much three-dimensional space due to their vertical intersection. While having the primary screening function of the rotary filter cartridge and the deep solid-liquid separation structure of the screw extruder, it can also reduce the overall space occupied by the device.

[0017] Meanwhile, the screw feeder and the rotary filter cartridge share a rotating shaft and rotate together, enhancing the overall feeding performance of the device. The screw feeder is installed above the discharge port of the screw extruder, without occupying too much space. The geared motor, rotary filter cartridge, and screw extruder form a three-tiered structure, with one geared motor effectively driving the rotary filter cartridge, screw extruder, and screw feeder. On the one hand, optimizing the installation position and number of geared motors further saves the overall space occupied by the device, and on the other hand, optimizing the transmission structure reduces the driving energy consumption. The primary and secondary filter water tanks effectively collect and discharge wastewater, and the self-cleaning nozzles effectively clean the rotary filter cartridge. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 yes Figure 1 A schematic cross-sectional view along line AA in the middle;

[0020] Figure 3 This is a schematic diagram of the overall structure of this utility model from a frontal view.

[0021] In the figure, the attached figures are labeled as follows:

[0022] Frame 1, first rotating shaft 11, geared motor 12, primary filter water tank 13, secondary filter water tank 14, self-cleaning nozzle 15, transfer chute 16, drain pipe 17.

[0023] Rotating filter cartridge 2, spiral propulsion blades 21;

[0024] Screw extruder 3, second rotating shaft 31, extrusion filter cylinder 32;

[0025] 4. Screw feeder, 41. Feed cylinder, 42. Screw feed blades, 43. Feed hopper, 44. Feed protective cover. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0027] Example 1

[0028] like Figures 1-3 As shown, the solid-liquid separation device of the filter residue system in this embodiment includes a frame 1, a rotary filter cylinder 2, and a screw extruder 3. The rotary filter cylinder 2 is installed inside the frame 1, and the screw extruder 3 is installed at the bottom of the frame 1. In this way, the frame 1 serves as the carrier for the rotary filter cylinder 2 and the screw extruder 3, and the rotary filter cylinder 2 and the screw extruder 3 are installed on the frame 1 as a two-layer hierarchical structure, which can save three-dimensional structural space. While having a solid-liquid separation structure with a primary screen and a screw extruder 3, it can also reduce the overall space occupied by this device.

[0029] For example, the frame 1 includes a frame-type support body and four legs to support the rotating filter cylinder 2 and the screw extruder 3. The rotating filter cylinder 2 is installed inside the support body, the screw extruder 3 is installed at the bottom of the support body, and the four legs provide sufficient height for the screw extruder 3 to meet the needs of drainage and slag discharge.

[0030] Furthermore, the inner wall of the rotary filter cylinder 2 is equipped with a spiral propulsion blade 21. The propulsion direction of the spiral propulsion blade 21 is opposite to that of the spiral extruder 3. The discharge port of the rotary filter cylinder 2 is located above the feed port of the spiral extruder 3, so that the material that has passed the initial screening in the rotary filter cylinder 2 can fall into the feed port on the side of the rotary extruder 3. The feed port of the rotary filter cylinder 2 is located above the tail end of the spiral extruder 3. The tail end of the spiral extruder 3 drains water and slag downwards. Whether the rotary filter cylinder 2 is fed through a pipeline or a feed hopper, it will not interfere with the drainage and slag discharge of the spiral extruder 3. Under the premise that the relevant functions of the rotary filter cylinder 2 and the spiral extruder 3 are normal, the overall space occupied by this device is further reduced.

[0031] In this embodiment, the rotary filter cartridge 2 and the screw extruder 3 are installed on the frame 1 as a two-layer hierarchical structure, which avoids occupying too much three-dimensional space due to their vertical intersection. While having the primary screening function of the rotary filter cartridge 2 and the deep solid-liquid separation structure of the screw extruder 3, the overall space occupied by this device can also be reduced.

[0032] Example 2

[0033] like Figure 2 As shown, a first rotating shaft 11 is installed on the frame 1, and a rotating filter cylinder 2 is installed on the first rotating shaft 11. The rotating filter cylinder 2 rotates with the first rotating shaft 11. When the first rotating shaft 11 is driven to rotate by the reduction motor 12, the first rotating shaft 11 will also drive the rotating filter cylinder 2 to rotate, thereby realizing the primary screening function.

[0034] The end plate at the discharge port of the rotary filter cylinder 2 is fixedly connected to the first rotating shaft 11. The discharge port of the rotary filter cylinder 2 can be set on the end plate at the discharge port of the rotary filter cylinder 2. The discharge port end plate can be provided with material outlets at equal intervals along its circumference so that the material can be smoothly discharged from the rotary filter cylinder 2.

[0035] The solid-liquid separation device in this embodiment also includes a screw feeder 4. The screw feeder 4 and the rotary filter cylinder 2 share a first rotating shaft 11. The pushing direction of the screw feeder 4 is the same as the pushing direction of the rotary filter cylinder 2. The screw feeder 4 conveys the material into the feed inlet of the rotary filter cylinder 2.

[0036] Specifically, the screw feeder 4 includes a feed cylinder 41 and screw feed blades 42. The feed cylinder 41 is mounted on the frame 1. For example, the feed cylinder 41 can be fixedly mounted on the side wall of the frame 1 by a flange mounted on its outer wall. The first rotating shaft 11 passes through the feed cylinder 41. The two ends of the first rotating shaft 11 are respectively mounted on the end of the feed cylinder 41 and the side wall of the frame 1 by bearings. The screw feed blades 42 are mounted on the first rotating shaft 11. The radius of the screw feed blades 42 is smaller than the radius of the screw propulsion blades 21 to avoid pushing too much material into the rotating filter cylinder 2, so as to maintain a moderate filtration volume in the rotating filter cylinder 2.

[0037] like Figure 2 As shown, the screw feeder 4 conveys material into the feed inlet of the rotary filter cylinder 2. Specifically, the feed cylinder 41, the rotary filter cylinder 21, and the first rotating shaft 11 are coaxially arranged. The discharge end of the feed cylinder 41 is set as an open port. The discharge end of the feed cylinder 41 is inserted into the inner cavity of the rotary filter cylinder 2 to convey material into the rotary filter cylinder 2. The end plate of the feed end of the rotary filter cylinder 2 can be rotatably mounted on the outer wall of the feed cylinder 41 through bearing components. That is, the end plate of the feed end of the rotary filter cylinder 2 is rotatably connected to the cylinder body of the feed cylinder 41. The cylinder body of the feed cylinder 41 provides effective support for the feed end of the rotary filter cylinder 2. A feed hopper 43 is installed on the side wall of the screw feeder 4. The feed hopper 43 extends from one end of the feed cylinder 41 to the other end to increase the feed capacity of the screw feeder 4. A feed guard 44 is installed on the feed hopper 43 to prevent material from splashing when it enters the feed hopper 43.

[0038] In addition, the end plate of the discharge end of the rotary filter cylinder 2 is mounted on the first rotating shaft 11. Inside the rotary filter cylinder 2, near the discharge end of the feed cylinder 41, there is also a drive inner plate 22. The inner ring of the drive inner plate 22 is fixedly mounted on the first rotating shaft 11 through a flange structure. The outer ring of the drive inner plate 22 is fixedly connected to the inner wall of the rotary filter cylinder 2. The end plate of the discharge end of the rotary filter cylinder 2 and the drive inner plate 22 drive the rotary filter cylinder 2 to rotate simultaneously, so as to avoid uneven force when the rotary filter cylinder 2 is driven by the first rotating shaft 11. The drive inner plate 22 has spaced passages on its outer periphery to prevent material blockage. There is an appropriate gap between the drive inner plate 22 and the discharge end of the feed cylinder 41, so that the material can smoothly enter the rotary filter cylinder 2 and be pushed. When the material falls from the feed cylinder 41 into the drive inner plate 22, the drive inner plate 22 acts as a baffle to prevent the material from being pushed too far from the feed cylinder 41 into the rotary filter cylinder 2.

[0039] In this embodiment, the screw feeder 4 and the rotating filter cylinder 2 share the same shaft and rotate together, which enhances the overall feeding performance of the device; the screw feeder 4 is installed above the discharge port of the screw extruder 3, which does not occupy too much space.

[0040] In other embodiments, when the material has excessive moisture content, a pumping pipeline can be used instead of the screw feeder 4 to supply material to the rotating filter cartridge 2.

[0041] Example 3

[0042] Based on Embodiment 2, the screw extruder 3 of this embodiment is provided with a second rotating shaft 31. The two ends of the second rotating shaft 31 are respectively mounted on the two ends of the screw extruder 3 through bearings. The first rotating shaft 11 and the second rotating shaft 31 are parallel. A reduction motor 12 is provided on the upper part of the frame 1. The first rotating shaft 11, the second rotating shaft 31 and the reduction motor 12 are cascaded and driven by gears and chains on the same side of the frame 1. Preferably, the first rotating shaft 11, the second rotating shaft 31 and the reduction motor 12 are driven on one side of the frame 1 where the discharge end of the rotating filter cylinder 2 and the feed end of the screw extruder 3 are provided. For example, the reduction motor 12 is connected to the double chain gear provided on the first rotating shaft 11 through gears and chains. The double chain gear on the first rotating shaft 11 is connected to the gear on the second rotating shaft 31 through another chain.

[0043] Thus, the geared motor 12, the rotary filter cylinder 2, and the screw extruder 3 form a three-layer hierarchical structure. One geared motor 12 can effectively drive the rotary filter cylinder 2, the screw extruder 3, and the screw feeder 4. On the one hand, by optimizing the installation position and number of geared motors 12, the overall space occupied by this device can be further saved. On the other hand, by optimizing the transmission structure, the driving energy consumption is reduced.

[0044] Example 4

[0045] like Figures 1-3 As shown, a primary filtration water tank 13 is mounted on the frame 1, and a rotating filter cartridge 2 is installed inside the primary filtration water tank 13. The bottom end of the primary filtration water tank 13 is designed as a drainage slope and equipped with a drain pipe 17, facilitating the collection and discharge of the water initially filtered out by the rotating filter cartridge 2. The lowest point of the drainage slope of the primary filtration water tank 13 is offset to one side of the frame 1 to avoid obstructing the screw extruder 3 at the bottom of the frame 1. The side wall of the primary filtration water tank 13 may be provided with an openable window for easy manual cleaning.

[0046] The screw extruder 3 is equipped with an extrusion filter cylinder 32 at its tail end. A secondary filter water tank 14 is located below the extrusion filter cylinder 32. The drain pipe 17 of the primary filter water tank 13 is connected to the secondary filter water tank 14, so that the filtered water can be collected and discharged in the secondary filter water tank 14. The rear end of the extrusion filter cylinder 32 is set as the slag discharge port of the screw extruder 3. A slag discharge box can be set below the slag discharge port.

[0047] A transfer chute 16 is provided between the discharge port of the rotary filter cylinder 2 and the feed port of the screw extruder 3. The transfer chute 16 is installed on the frame 1, specifically on the bottom surface of the primary water filter tank. The transfer chute 16 is used to collect and gather the filter residue discharged from the discharge port of the rotary filter cylinder 2 above the feed port of the screw extruder 3.

[0048] The primary filtration tank 13 is equipped with self-cleaning nozzles 15 arranged at equal intervals along the axial direction of the rotating filter cartridge 2, with the self-cleaning nozzles 15 facing the rotating filter cartridge 2. Specifically, the top of the primary filtration tank 13 can be set as an open opening, and the self-cleaning nozzles 15 can be installed on a water supply header. The water supply header can be installed on the side of the open opening of the primary filtration tank, so that the self-cleaning nozzles 15 can clean the rotating filter cartridge 2 in a top-to-bottom direction.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A solid-liquid separation device for a filter residue system, characterized in that, The device includes a frame (1), a rotating filter cylinder (2), and a screw extruder (3). The rotating filter cylinder (2) is installed inside the frame (1), and the screw extruder (3) is installed at the bottom of the frame (1). The inner wall of the rotating filter cylinder (2) is equipped with a screw propulsion blade (21). The propulsion direction of the screw propulsion blade (21) is opposite to that of the screw extruder (3). The discharge port of the rotating filter cylinder (2) is located above the feed port of the screw extruder (3), and the feed port of the rotating filter cylinder (2) is located above the tail end of the screw extruder (3).

2. The solid-liquid separation device for the filter residue system according to claim 1, characterized in that, The frame (1) is equipped with a first rotating shaft (11), and the rotating filter cylinder (2) is mounted on the first rotating shaft (11). The rotating filter cylinder (2) rotates with the first rotating shaft (11).

3. The solid-liquid separation device for the filter residue system according to claim 2, characterized in that, It also includes a screw feeder (4), which shares the first rotating shaft (11) with the rotating filter cylinder (2). The screw feeder (4) includes a feed cylinder (41) and a screw feed blade (42). The feed cylinder (41) is mounted on the frame (1), and the screw feed blade (42) is mounted on the first rotating shaft (11). The discharge end of the feed cylinder (41) is inserted into the inner cavity of the rotating filter cylinder (2) to convey material into the rotating filter cylinder (2).

4. The solid-liquid separation device for the filter residue system according to claim 3, characterized in that, The end plate at the feed end of the rotating filter cylinder (2) is rotatably connected to the body of the feed cylinder (41), and the end plate at the discharge end of the rotating filter cylinder (2) is mounted on the first rotating shaft (11).

5. The solid-liquid separation device for the filter residue system according to claim 3, characterized in that, The screw feeder (4) has a feed hopper (43) installed on its side wall, and a feed protective cover (44) is installed on the feed hopper (43).

6. The solid-liquid separation device for the filter residue system according to claim 2 or 3, characterized in that, The screw extruder (3) is provided with a second rotating shaft (31), the first rotating shaft (11) and the second rotating shaft (31) are parallel, and the upper part of the frame (1) is provided with a reduction motor (12). The first rotating shaft (11), the second rotating shaft (31) and the reduction motor (12) are connected and driven by gears and chains on the same side of the frame.

7. The solid-liquid separation device for the filter residue system according to claim 1, characterized in that, The frame (1) is provided with a primary filter water tank (13), the rotating filter cylinder (2) is installed in the primary filter water tank (13), and the bottom end of the primary filter water tank (13) is provided with a drainage slope and a drain pipe (17).

8. The solid-liquid separation device for the filter residue system according to claim 7, characterized in that, The screw extruder (3) is provided with an extrusion filter cylinder (32) at its tail end. A secondary filter water tank (14) is provided below the extrusion filter cylinder (32). The drain pipe (17) of the primary filter water tank (13) is connected to the secondary filter water tank (14).

9. The solid-liquid separation device for the filter residue system according to claim 7, characterized in that, The primary filter tank (13) is equipped with self-cleaning nozzles (15) arranged at equal intervals along the axial direction of the rotating filter cylinder (2), and the self-cleaning nozzles (15) face the rotating filter cylinder (2).

10. The solid-liquid separation device for the filter residue system according to claim 1 or 7, characterized in that, A transfer chute (16) is provided between the discharge port of the rotating filter cylinder (2) and the feed port of the screw extruder (3), and the transfer chute (16) is installed on the frame (1).

Images