A drum filter device

Abstract

The present invention discloses a drum-type filter device, comprising a base, a filter drum mounted above the base via a first bearing seat and a second bearing seat, a conveying screw within the filter drum, the conveying screw shaft being partially hollow, the entrance of the hollow section being a liquid inlet, and one side of the solid section being connected to a ball screw drive motor and a ball spline drive motor; a guide groove being placed within the base, a conveying pipeline being mounted on the sidewalls of the guide groove, and cleaning nozzles being evenly distributed on the pipeline; a water pump, a liquid supply pipe, a filter drum drive motor, a filter residue collection box, and a filtrate collection box being located below the base. The motor drives the filter drum to centrifugally filter the liquid, and the filtrate flows into the filtrate collection box through the guide groove. The filter residue forms a filter cake on the inner wall of the drum, and the motor drives the conveying screw to cut, crush, and convey the filter cake, which is then discharged into the filter residue collection box through a filter residue guide hood. The present invention has good filtering effect, high filtering efficiency, and a high degree of automation. The filtrate can be recycled to achieve a self-cleaning function, which is beneficial to energy conservation and environmental protection.

Description

Technical Field

[0001] The invention belongs to the technical field of filtering devices, and in particular relates to a drum-type filtering device. Background Art

[0002] In recent years, technological advancements have led to higher demands on filtration technology. Filtration devices are common in production, and drum filters are widely used due to their excellent solid-liquid separation and high filtration efficiency. Traditional filtration devices use filter screens of varying pore sizes to separate the residue from the filtrate. However, these devices suffer from issues such as an inability to quickly collect the residue, poor filtration performance, and the need for regular cleaning and replacement of the filter screen, which can disrupt continuous operation.

[0003] At present, there are still many deficiencies in the filtration problem of solid-liquid separation. The degree of automation needs to be improved, and the filtration efficiency still needs to be improved. Summary of the Invention

[0004] The problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a drum-type filtering device that can achieve efficient separation and collection of solids and liquids, improve filtration efficiency, save energy, achieve long-term continuous operation, and meet different production needs.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A drum-type filter device, characterized in that it comprises: a base (1), a conveying screw (2), a filter drum (3), a filter residue deflector (4), a filter drum drive motor (5), a transmission belt (6), a pulley (7), a ball screw drive motor (8), a ball screw transmission component support plate (9), a ball screw synchronous belt (10), a ball screw synchronous pulley (11), a ball screw nut (12), a ball spline drive motor (13), a ball spline transmission component support plate (14), a ball spline synchronous belt (15), a ball spline synchronous pulley (16), a ball spline nut (17), a first bearing seat (18), a guide groove (19), a machine cover (20), a bolt (21), a conveying pipeline (22), a cleaning nozzle (23), a second bearing seat (24), a water pump (25), a liquid supply pipe (26), a filter residue collection box (27), a filtrate collection box (28), and a sealing plug (29);

[0007] The filter drum (3) is mounted on a base through a first bearing seat (18) and a second bearing seat (24); a pulley (7) is connected to the shaft of the filter drum (3); a filter drum drive motor (5) is connected to a transmission belt (6), and drives the pulley (7) to rotate, thereby realizing the rotational movement of the filter drum.

[0008] The connecting shaft between the filter drum (3) and the first bearing seat (18) and the second bearing seat (24) is hollow, and a conveying screw shaft (2) is arranged inside the hollow shaft; the filter drum (3) contains a conveying screw (2), and the total length of the conveying screw (2) is 1.5 to 1.7 times that of the filter drum (3); the conveying screw (2) is sequentially connected to a ball spline synchronous pulley (16), a ball spline nut (17), a ball screw nut (12), and a ball screw synchronous pulley (11); the ball screw drive motor (8) drives the conveying screw (2) to achieve translational motion; and the ball spline drive motor (13) drives the conveying screw (2) to achieve rotational motion.

[0009] The conveying screw (2) is divided into a slotted section L1, a sealing plug installation section L2, a small-diameter end smooth shaft section L3, a spiral segment L4 and a large-diameter end smooth shaft section L5 along the axial direction; L1 does not exceed 1 / 3 of the total shaft length, L2 is the sealing plug length, and L3 is equal to the stroke H of the conveying screw; L2+L3+L4 is 1 / 2 of the total shaft length; and L6 is 1 / 6 of the total shaft length.

[0010] The filter drum (3) is divided into a small-diameter end equal-diameter section L6, a variable-diameter section L7, and a large-diameter end equal-diameter section L8 along the axial direction; the variable-diameter section is provided with sieve holes to facilitate liquid overflow; the small-diameter end equal-diameter section L6 is equal to the sum of the sealing plug installation section L2 and the small-diameter end optical axis section L3, that is, L6=L2+L3; the variable-diameter section L7 is equal to the spiral segment length L4, that is, L7=L4; the large-diameter end equal-diameter section length L8 is equal to the conveying spiral stroke H, that is, L8=H.

[0011] The shaft of the filter drum (3) is hollow, and a conveying screw (2) is arranged therein; the total length of the conveying screw (2) is 1.5 to 1.7 times the total length of the filter drum (3); the shaft of the conveying screw (2) is partially hollow, and the hollow section serves as a liquid inlet channel (30), and the entrance of the liquid inlet channel (30) is a liquid inlet (34); the length of the hollow section is the sum of the length L4 of the spiral segment and the length L5 of the optical axis section at the large diameter end, which does not exceed 2 / 3 of the total length of the shaft, and the spiral segment is evenly distributed with liquid outlets (31) along the axial direction.

[0012] The spiral piece (33) on the conveying screw (2) is a variable diameter spiral piece, and its contraction angle is the same as the contraction angle of the variable diameter section of the filter drum, both being θ; the conveying screw (2) can adjust the gap between the spiral piece (33) and the filter drum (3) through axial translation movement; the mathematical relationship between the maximum gap h and the stroke H of the conveying screw (2) is h=Hsin(θ / 2), that is, the gap between the spiral piece (33) and the filter drum (3) can be adjusted between 0 and h.

[0013] The sealing plug (29) is provided with an annular groove in the circumference; the sealing plug (29) and the shaft of the conveying screw (2) are in interference fit. When the conveying screw (2) is at the starting point of the stroke, the sealing plug (29) seals the filter residue outlet. When the conveying screw (2) is at the end of the stroke, the filter residue outlet is opened.

[0014] The guide trough (19) is mounted on the base (1); a filtrate outlet is provided on one side of the guide trough (19), and a filtrate collecting box (28) is located below the guide trough; a filter residue guide cover mounting hole is provided on the other side, and a filter residue guide cover (4) is mounted thereon; the filter residue outlet of the filter drum is located inside the guide cover, and a filter residue collecting box (27) is located below the guide cover;

[0015] The guide groove (19) is connected to a delivery pipeline (22), and the delivery pipeline (22) is evenly distributed with fan-shaped cleaning nozzles (23) along the axial direction; the delivery pipeline (22) is connected to a water pump (25), and the lower part of the water pump (25) is connected to a liquid supply pipe (26), and the liquid supply pipe (26) is connected to a filtrate collection box (28). BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments.

[0017] Figure 1 It is a top view of the present invention.

[0018] Figure 2 It is a rear view of the present invention.

[0019] Figure 3 It is a left view of the present invention.

[0020] Figure 4 It is a longitudinal cross-sectional view of the combination of the conveying screw (2) and the filter drum (3).

[0021] Figure 5 for Figure 4 Enlarged view of point Ⅰ in the middle.

[0022] Figure 6 for Figure 4 Enlarged view of point II in the middle.

[0023] Figure 7 It is a schematic diagram of the structure of the conveying screw (2).

[0024] Figure 8 It is the front view of the conveying screw (2).

[0025] Figure 9 It is the front view of the filter drum (3). DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings.

[0027] Example 1

[0028] First, the ball screw drive motor (8) is started to drive the conveying screw (2) to move rightward to the starting point of the stroke. At this time, the gap between the spiral plate (33) and the filter screen of the filter drum (3) is h, and the sealing plug (29) completely closes the filter residue outlet. The ball screw drive motor (8) is turned off, and the filter drum drive motor (5) is started. The liquid to be filtered is introduced from the liquid inlet (34), enters the liquid inlet channel (30), and flows into the filter drum (3) through the liquid outlet (31). The filter drum (3) rotates at high speed to cause the filtrate to seep out of the filter screen of the filter drum (3), flow into the guide groove (19), and then be discharged into the filtrate collection box (28) through the filtrate outlet of the guide groove (19). The filter residue remains on the inner wall to form a filter cake.

[0029] The filter drum drive motor (5) is turned off, and the ball screw drive motor (8) and the ball spline drive motor (13) are turned on at the same time. The conveying screw (2) rotates and moves to the left, and the gap between the filter drum (3) and the filter screen gradually decreases. The sealing plug (29) moves to the left synchronously until the filter residue outlet is fully opened. The ball screw drive motor (8) is turned off. At this time, the conveying screw (2) is at the end of the stroke; the spiral blade (33) cuts the filter cake, and the filter cake is cut into small pieces of filter residue and falls off the inner wall of the filter drum (3). Under the action of the conveying screw (2), the filter residue moves to the left, enters the filter residue guide cover (4) through the filter residue outlet, and is finally discharged into the filter residue collection box (27).

[0030] The ball screw drive motor (8) is turned on to drive the conveying screw (2) to move rightward to the starting point of the stroke, and then the ball screw drive motor (8) and the ball spline drive motor (13) are turned off; then the filter drum drive motor (5) and the water pump (25) are turned on, and the filtrate in the filtrate collection box (28) is sucked into the liquid supply pipe (26) under the action of the water pump (25), and discharged into the conveying pipe (22), and sprayed onto the outer surface of the filter drum (3) through the cleaning nozzle (23), and the filter drum (3) is cleaned by the rotation of the filter drum, thereby realizing the self-cleaning function of the system.

[0031] The above description is a complete filtering process.

Claims

1. A drum filter device, characterized in that: include: Base (1), conveying screw (2), filter drum (3), filter residue deflector (4), filter drum drive motor (5), transmission belt (6), pulley (7), ball screw drive motor (8), ball screw transmission assembly support plate (9), ball screw synchronous belt (10), ball screw synchronous pulley (11), ball screw nut (12), ball spline drive motor (13), ball spline transmission assembly support plate (14), ball spline synchronous belt (15), ball spline synchronous pulley (16), ball spline nut (17), first bearing seat (18), deflector groove (19), machine cover (20), bolt (21), conveying pipeline (22), cleaning nozzle (23), second bearing seat (24), water pump (25), liquid supply pipe (26), filter residue collection box (27), filtrate collection box (28), sealing plug (29); A filter drum (3) is mounted on the base (1) via a first bearing seat (18) and a second bearing seat (24); a conveying screw (2) is arranged in the filter drum (3); a shaft (32) of the conveying screw (2) is partially hollow and serves as a liquid inlet channel (30); the entrance of the liquid inlet channel (30) is a liquid inlet (34), and the liquid inlet channel (30) has liquid outlets (31) uniformly distributed along the axial direction; one side of the shaft (32) is an optical axis, and the other side is provided with a linear groove and a spiral groove, and is provided with a sealing plug (29), and a spiral sheet (33) is provided on the middle section; a filter residue outlet is provided on one side of the filter drum (3), and a guide groove (19) is provided below the guide groove and is mounted on the base (1); a filtrate outlet is provided on one side of the guide groove (19), and a filtrate collector is provided below the guide groove (19). The collecting box (28) is provided with a mounting hole for a filter residue guide cover (4) on the other side, and a filter residue collecting box (27) is provided below the filter residue guide cover (4); the filter residue guide cover (4) is installed in the guide groove (19), and the inside of the filter residue guide cover (4) is the filter residue outlet of the filter drum (3); a conveying pipeline (22) is installed on the side wall of the guide groove (19), and the conveying pipeline (22) is uniformly distributed with fan-shaped cleaning nozzles (23) along the axial direction; the conveying pipeline (22) is connected to a water pump (25), and a liquid supply pipe (26) is connected to the filtrate collecting box (28); a filter drum driving motor (5) is provided below the base (1), and the filter drum (3) is driven by a transmission belt (6) and a pulley (7) to realize its rotational motion; A ball screw drive motor (8) is provided above the base (1), which drives the conveying screw (2) through a ball screw synchronous belt (10) and a ball screw synchronous pulley (11) to achieve its translational motion; A ball spline drive motor (13) is provided above the base (1), which drives the conveying screw (2) through a ball spline synchronous belt (15) and a ball spline synchronous pulley (16) to realize its rotational motion; the ball screw nut (12) is installed on the base (1) through a ball screw transmission component support plate (9); the ball spline nut (17) is installed on the base (1) through a ball spline transmission component support plate (14); and the machine cover (20) is connected to the base (1) through the bolts (21).

2. A drum-type filter device according to claim 1, characterized in that: The conveying screw (2) is divided into a slotted section L1, a sealing plug installation section L2, a small-diameter end smooth shaft section L3, a spiral segment L4 and a large-diameter end smooth shaft section L6 along the axial direction; L1 does not exceed 1 / 3 of the total shaft length, L2 is the sealing plug length, and L3 is equal to the stroke H of the conveying screw; L2+L3+L4 is 1 / 2 of the total shaft length; and L6 is 1 / 6 of the total shaft length.

3. The drum filter device according to claim 1, characterized in that: The filter drum (3) is divided into L6, a variable diameter section L7, and a large diameter end constant diameter section L8 along the axial direction; the variable diameter section has a contraction angle of θ, the small diameter end is connected to the first bearing seat, and the large diameter end is connected to the second bearing seat; a sieve hole is provided on the variable diameter section to facilitate filtrate overflow; the small diameter end constant diameter section L6 is equal to the sum of the sealing plug installation section L2 and the small diameter end optical axis section L3, that is, L6=L2+L3; the variable diameter section L7 is equal to the spiral segment length L4, that is, L7=L4; the large diameter end constant diameter section length L8 is equal to the conveying spiral stroke H, that is, L8=H.

4. The drum filter device according to claim 1, characterized in that: The shaft of the filter drum (3) is hollow, and a conveying screw (2) is arranged therein; the total length of the conveying screw (2) is 1.5 to 1.7 times the total length of the filter drum (3); the shaft of the conveying screw (2) is partially hollow, and the hollow section serves as a liquid inlet channel (30), and the entrance of the liquid inlet channel (30) is a liquid inlet (34); the length of the hollow section is the sum of the length L4 of the spiral segment and the length L5 of the optical axis segment at the large diameter end, and does not exceed 2 / 3 of the total length of the shaft, and the spiral segment is evenly distributed with liquid outlets (31) along the axial direction.

5. The drum filter device according to claim 1, characterized in that: The spiral piece (33) on the conveying screw (2) is a variable diameter spiral piece, and its contraction angle is the same as the contraction angle of the variable diameter section of the filter drum, both being θ; the conveying screw (2) can adjust the gap between the spiral piece (33) and the filter drum (3) through axial translation movement; the mathematical relationship between the maximum gap h and the stroke H of the conveying screw (2) is h=Hsin(θ / 2), that is, the gap between the spiral piece (33) and the filter drum (3) can be adjusted between 0 and h.

6. The drum filter device according to claim 1, characterized in that: The sealing plug (29) is provided with an annular groove in the circumference thereof; the sealing plug (29) and the shaft of the conveying screw (2) are in interference fit, and when the conveying screw (2) is at the starting point of the stroke, the sealing plug (29) seals the filter residue outlet, and when the conveying screw (2) is at the end point of the stroke, the filter residue outlet is opened.

7. The drum filter device according to claim 1, characterized in that: The guide groove (19) is connected to a delivery pipeline (22), and the delivery pipeline (22) is evenly distributed with fan-shaped cleaning nozzles (23) along the axial direction; the delivery pipeline (22) is connected to a water pump (25), and the lower part of the water pump (25) is connected to a liquid supply pipe (26), and the liquid supply pipe (26) is connected to a filtrate collection box (28).

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