Sludge dewatering device for sewage treatment

Abstract

The utility model relates to the technical field of sludge dewatering, in particular to a sludge dewatering device for sewage treatment. The sludge dewatering device has the advantages that sludge can be continuously conveyed upwards through rotation of the gradually-changed screw pitch worm, redundant water naturally falls under the action of gravity, meanwhile, the sludge is continuously extruded along with the reduced screw pitch, the water of the sludge is extruded out, and after the sludge is pushed to the topmost part, the resistance stopper needs to be pushed, so that the sludge can be dewatered. The sludge can be extruded out along the V-shaped wedge-shaped groove only by pushing the bottom V-shaped wedge-shaped groove out of the dewatering filter cartridge, the sludge is further extruded under the pressure of the thrust spring to further extrude water, and then the output size is further compressed along with the guide of the V-shaped wedge-shaped groove, so that the water is further extruded out while the water is further extruded out. And the V-shaped wedge-shaped groove at the bottom of the sludge is guided out and is prevented from being extruded all around, so that the sludge is extruded more intensively and is convenient to collect, and the extruded sludge is prevented from falling onto the rack.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge dehydration, in particular to a sludge dehydration device for sewage treatment. Background Art

[0002] Sludge is the inevitable product of sewage treatment in sewage treatment plants and sewage stations. Once the untreated sludge enters the environment, it will directly cause secondary pollution to the water body and the atmosphere, and will also pose a serious threat to the ecological environment and human activities. Therefore, the sludge needs to be dehydrated when it is discharged. The sludge dehydration device is a sludge dehydration device method that removes moisture from the flowing primary, concentrated or digested sludge and converts it into semi-solid or solid mud blocks.

[0003] The commonly used sludge dewatering device at present is the screw stack sludge dewatering machine. The screw stack sludge dewatering machine continuously compresses the sludge space through the worm with gradually decreasing pitch, so that the water is squeezed out, and then the pressure baffle at the top increases the sludge extrusion pressure to further squeeze out the water. However, the current screw stack sludge dewatering machine still has the following problems in actual use:

[0004] The current pressure baffle on the top of the sludge dewatering machine directly covers the mud outlet. After the sludge is squeezed out, it is dispersed around, causing the sludge to be discharged in all directions, which is not conducive to collection. At the same time, there is a lack of discharge guidance, and the extrusion pressure cannot be gradually increased. The dewatering effect still has room for further improvement. At the same time, it is inconvenient to adjust the baffle pressure. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the utility model is to provide a sludge dewatering device for sewage treatment to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a sludge dewatering device for sewage treatment, including a collecting box, the top of the inner wall of the collecting box is fixedly connected with an inclined dewatering filter cartridge, the center of the bottom end of the dewatering filter cartridge is fixedly connected with a driving motor, the output end of the driving motor penetrates into the inner wall of the dewatering filter cartridge and is fixedly connected with a gradual pitch worm, the diameter of the gradual pitch worm is adapted to the diameter of the inner wall of the dewatering filter cartridge, a positioning frame is fixedly connected to a side of the collecting box near the top outlet of the dewatering filter cartridge, an externally threaded sleeve is fixedly connected to the center of the positioning frame, the inner wall of the externally threaded sleeve is slidably connected with a central guide rod that penetrates the positioning frame, the bottom end of the central guide rod is fixedly connected with a resistance stopper, and the center of the bottom of the resistance stopper A V-shaped groove is provided at the center, and the resistance stopper is slidably connected to the top of the inner wall of the dehydration filter cartridge. The diameter of the resistance stopper is matched with the diameter of the inner wall of the dehydration filter cartridge. Positioning guide rods are fixedly connected to both sides of the top of the resistance stopper. The two positioning guide rods penetrate the positioning frame and are slidably connected to the positioning frame. The outer walls of the two positioning guide rods are slidably connected to a connecting plate together. A spring baffle is rotatably connected at the center of one side of the connecting plate, and a threaded sleeve is rotatably connected at the center of the other side of the connecting plate. The threaded sleeve is threadedly connected to the outer wall of the externally threaded sleeve. A thrust spring is sleeved on the outer wall of the center guide rod, and the thrust spring is located between the spring baffle and the resistance stopper. A plurality of drainage filter holes are provided on the outer wall of the dehydration filter cartridge at the position of the inner wall of the collection box.

[0008] Preferably, any of the above schemes is that a feed hopper is fixedly connected to the top of the dehydration filter cartridge close to the driving motor, and the feed hopper is a funnel-shaped structure. A drain pipe is fixedly connected to the bottom of the bottom end of the dehydration filter cartridge, and the bottom of the drain pipe is fixedly connected to the collecting box. The bottom of the dehydration filter cartridge is connected to the inside of the collecting box through the drain pipe.

[0009] The technical effect achieved by adopting the above scheme is: the sludge can be easily fed into the interior of the dewatering filter cartridge through the feed hopper, and the water deposited at the bottom of the dewatering filter cartridge can be discharged through the drain pipe.

[0010] Preferably, any of the above schemes is that support ears are fixedly connected to both sides of the middle part of one side of the connecting plate, a transmission worm is rotatably connected to the centers of the tops of the two support ears, a transmission worm wheel is fixedly connected to the middle part of the outer wall of the threaded sleeve, the transmission worm wheel is meshingly connected to the middle part of the transmission worm, and a rotating head is fixedly connected to both ends of the transmission worm.

[0011] The technical effect achieved by adopting the above scheme is: by rotating the transmission worm to drive the transmission worm wheel to rotate, the threaded sleeve can be driven to rotate to achieve adjustment, and the transmission of the worm wheel can automatically lock the rotation of the threaded sleeve to prevent loosening of the adjustment.

[0012] Preferably, any of the above schemes has the V-shaped groove opening gradually narrowing from a side close to the inner wall of the dehydration filter cartridge to a side away from the dehydration filter cartridge, and a chamfer extending to the bottom edge of the resistance stopper is provided at the V-shaped groove opening.

[0013] The technical effect achieved by adopting the above scheme is: chamfering facilitates guiding the sludge into the inside of the V-shaped groove, and with the guidance of the V-shaped groove, the output size is further compressed, so that the water is further squeezed out and the sludge is output from the bottom of the V-shaped groove.

[0014] Preferably, any of the above schemes has the same length as the positioning guide rod, the lengths of the central guide rod and the positioning guide rod are both greater than the length of the positioning frame, and the length of the external threaded sleeve is less than half the length of the positioning frame.

[0015] The technical effect achieved by adopting the above scheme is: preventing the external threaded sleeve from hitting the resistance stop head, resulting in the V-shaped wedge groove being unable to push out the dewatering filter cartridge.

[0016] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0017] 1. A sludge dewatering device for sewage treatment can continuously transport the sludge upward by rotating a gradually variable pitch worm. Excess water will naturally fall under the action of gravity. At the same time, the sludge will be continuously squeezed as the pitch is reduced to squeeze out the water. After the sludge is pushed to the top, it is necessary to push the resistance stopper to push the V-shaped groove at the bottom to the outside of the dewatering filter cartridge so that the sludge can be squeezed out along the V-shaped groove. Under the pressure of the thrust spring, the sludge is further squeezed to further squeeze out the water. Then, with the guidance of the V-shaped groove, the output size is further compressed to squeeze out the water. At the same time, the V-shaped groove at the bottom of the sludge is led out to prevent it from being squeezed out to the surroundings, so that the sludge is extruded more concentratedly, which is convenient for collection and prevents the extruded sludge from falling onto the frame.

[0018] 2. A sludge dewatering device for sewage treatment, which can make the connecting plate close to or away from the top of the dewatering filter cartridge by rotating the threaded sleeve, thereby compressing the thrust spring or loosening the thrust spring, so that the thrust on the resistance stop head can be flexibly adjusted to achieve the adjustment of the push-out resistance, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3This is a schematic diagram of the structure of the connecting plate of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the resistance stopper of the utility model.

[0023] In the figure: 1-collection box, 2-dewatering filter cartridge, 3-feed hopper, 4-drive motor, 5-drain pipe, 6-positioning frame, 7-center guide bar, 8-positioning guide rod, 9-connecting plate, 10-spring baffle, 11-threaded sleeve, 12-external threaded sleeve, 13-thrust spring, 14-resistance baffle, 15-V-shaped groove, 16-drainage filter hole, 17-gradual pitch worm, 18-support ear, 19-transmission worm, 20-transmission worm wheel. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following description.

[0025] Embodiment 1: Figures 1 to 4 As shown, a sludge dewatering device for sewage treatment includes a collecting box 1, the top of the inner wall of the collecting box 1 is fixedly connected to an inclined dewatering filter cartridge 2, the center of the bottom end of the dewatering filter cartridge 2 is fixedly connected to a driving motor 4, the output end of the driving motor 4 penetrates into the inner wall of the dewatering filter cartridge 2 and is fixedly connected to a gradual pitch worm 17, the diameter of the gradual pitch worm 17 is adapted to the diameter of the inner wall of the dewatering filter cartridge 2, a positioning frame 6 is fixedly connected to a side of the collecting box 1 near the top outlet of the dewatering filter cartridge 2, an externally threaded sleeve 12 is fixedly connected to the center of the positioning frame 6, the inner wall of the externally threaded sleeve 12 is slidably connected to a central guide rod 7 that penetrates the positioning frame 6, the bottom end of the central guide rod 7 is fixedly connected to a resistance stopper 14, a V-shaped groove 15 is provided at the center of the bottom of the resistance stopper 14, and a resistance stopper 14 is fixedly connected to a V-shaped groove 15. The force stop head 14 is slidably connected to the top of the inner wall of the dehydration filter cartridge 2, the diameter of the resistance stop head 14 is adapted to the diameter of the inner wall of the dehydration filter cartridge 2, and positioning guide rods 8 are fixedly connected to both sides of the top of the resistance stop head 14, and the two positioning guide rods 8 both penetrate the positioning frame 6 and are slidably connected to the positioning frame 6, and the outer walls of the two positioning guide rods 8 are slidably connected to a connecting plate 9 together, and a spring baffle 10 is rotatably connected to the center of one side of the connecting plate 9, and a threaded sleeve 11 is rotatably connected to the center of the other side of the connecting plate 9, and the threaded sleeve 11 is threadedly connected to the outer wall of the externally threaded sleeve 12, and a thrust spring 13 is sleeved on the outer wall of the center guide rod 7, and the thrust spring 13 is located between the spring baffle 10 and the resistance stop head 14, and a plurality of drainage filter holes 16 are provided on the outer wall of the dehydration filter cartridge 2 at the position of the inner wall of the collecting box 1.

[0026] As an optional technical solution of the utility model, a feed hopper 3 is fixedly connected to the top of the dewatering filter cartridge 2 near the driving motor 4, and the feed hopper 3 is a funnel-shaped structure. A drain pipe 5 is fixedly connected to the bottom of the bottom end of the dewatering filter cartridge 2, and the bottom of the drain pipe 5 is fixedly connected to the collecting box 1. The bottom of the dewatering filter cartridge 2 is connected to the interior of the collecting box 1 through the drain pipe 5. The sludge can be easily input into the interior of the dewatering filter cartridge 2 through the feed hopper 3, and the water deposited at the bottom of the dewatering filter cartridge 2 can be discharged through the drain pipe 5.

[0027] As an optional technical solution of the present utility model, support ears 18 are fixedly connected to both sides of the middle part of one side of the connecting plate 9, and a transmission worm 19 is rotatably connected to the centers of the tops of the two support ears 18. A transmission worm wheel 20 is fixedly connected to the middle part of the outer wall of the threaded sleeve 11, and the transmission worm wheel 20 is meshed with the middle part of the transmission worm 19. Both ends of the transmission worm 19 are fixedly connected to a rotating head. By rotating the transmission worm 19 to drive the transmission worm wheel 20 to rotate, the threaded sleeve 11 can be driven to rotate to achieve adjustment. The rotation of the threaded sleeve 11 can be automatically locked through the transmission of the worm wheel to prevent loosening during adjustment.

[0028] As an optional technical solution of the present utility model, the opening of the V-shaped wedge groove 15 gradually narrows from the side close to the inner wall of the dehydration filter cartridge 2 to the side away from the dehydration filter cartridge 2. The opening of the V-shaped wedge groove 15 is provided with a chamfer extending to the bottom edge of the resistance stop head 14. The chamfer facilitates the guidance of the sludge into the interior of the V-shaped wedge groove 15. With the guidance of the V-shaped wedge groove 15, the output size is further compressed, so that the water is further squeezed out and the sludge is discharged from the bottom of the V-shaped wedge groove 15.

[0029] As an optional technical solution of the present utility model, the length of the center guide rod 7 is equal to that of the positioning guide rod 8, and the length of the center guide rod 7 and the positioning guide rod 8 are both greater than the length of the positioning frame 6. The length of the external threaded sleeve 12 is less than half the length of the positioning frame 6, thereby preventing the external threaded sleeve 12 from hitting the resistance stop 14, resulting in the V-shaped groove 15 being unable to push out the dehydration filter cartridge 2.

[0030] A sludge dewatering device for sewage treatment, the working principle is as follows:

[0031] 1) The sludge can be continuously transported upward by rotating the variable pitch worm 17, and the excess water will naturally fall down under the action of gravity;

[0032] 2) As the pitch decreases, the sludge will be squeezed continuously to squeeze out the water;

[0033] 3) After the sludge is pushed to the top, the resistance stopper 14 needs to be pushed to push the V-shaped groove 15 at the bottom to the outside of the dewatering filter cartridge 2, so that the sludge can be squeezed out along the V-shaped groove 15. Under the pressure of the thrust spring 13, the sludge is further squeezed to further squeeze out water;

[0034] 4) With the guidance of the V-shaped groove 15, the output size is further compressed, so that the water is further squeezed out, and the V-shaped groove 15 at the bottom of the sludge is guided out to prevent it from squeezing out to the surroundings.

[0035] In summary, the sludge dewatering device for sewage treatment can continuously transport the sludge upward by rotating the variable pitch worm 17. Excess water will naturally fall down under the action of gravity. At the same time, the sludge will be continuously squeezed as the pitch is reduced to squeeze out the water. After the sludge is pushed to the top, the resistance stopper 14 needs to be pushed to push the V-shaped groove 15 at the bottom to the outside of the dewatering filter cartridge 2 so that the sludge can be squeezed out along the V-shaped groove 15. Under the pressure of the thrust spring 13, the sludge is further squeezed to further squeeze out the water. Then, with the guidance of the V-shaped groove 15, the output size is further compressed, so that the water is further squeezed out, and the sludge is guided out from the bottom of the V-shaped groove 15 to prevent it from squeezing out to the surroundings, so that the sludge is extruded more concentratedly, which is convenient for collection and prevents the squeezed sludge from falling onto the frame. By rotating the threaded sleeve 11, the connecting plate 9 can be moved close to or away from the top of the dewatering filter cartridge 2, thereby compressing the thrust spring 13 or loosening the thrust spring 13, so that the thrust of the resistance stop 14 can be flexibly adjusted to achieve the adjustment of the push-out resistance, thereby improving practicality.

[0036] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sludge dewatering device for sewage treatment, characterized in that: The invention comprises a collecting box (1), wherein the top of the inner wall of the collecting box (1) is fixedly connected to a dewatering filter cartridge (2) arranged obliquely, the center of the bottom end of the dewatering filter cartridge (2) is fixedly connected to a driving motor (4), the output end of the driving motor (4) penetrates the inner wall of the dewatering filter cartridge (2) and is fixedly connected to a gradually variable pitch worm (17), the diameter of the gradually variable pitch worm (17) is adapted to the diameter of the inner wall of the dewatering filter cartridge (2), and the collecting box (1) is close to the dewatering filter cartridge. (2) A positioning frame (6) is fixedly connected to one side of the top outlet, an external threaded sleeve (12) is fixedly connected to the center of the positioning frame (6), a central guide rod (7) penetrating the positioning frame (6) is slidably connected to the inner wall of the external threaded sleeve (12), a resistance stopper (14) is fixedly connected to the bottom end of the central guide rod (7), a V-shaped groove (15) is provided at the center of the bottom of the resistance stopper (14), and the resistance stopper (14) is slidably connected to the release member. The top of the inner wall of the water filter cartridge (2), the diameter of the resistance stopper (14) is adapted to the diameter of the inner wall of the dewatering filter cartridge (2), both sides of the top of the resistance stopper (14) are fixedly connected with positioning guide rods (8), the two positioning guide rods (8) both penetrate the positioning frame (6) and are slidably connected to the positioning frame (6), the outer walls of the two positioning guide rods (8) are slidably connected with a connecting plate (9), the center of one side of the connecting plate (9) is rotatably connected with a spring baffle (10), the center of the other side of the connecting plate (9) is rotatably connected with a threaded sleeve (11), the threaded sleeve (11) is threadedly connected to the outer wall of the external threaded sleeve (12), the outer wall of the center guide rod (7) is sleeved with a thrust spring (13), the thrust spring (13) is located between the spring baffle (10) and the resistance stopper (14), and the outer wall of the dewatering filter cartridge (2) is provided with a plurality of drainage filter holes (16) at a position of the inner wall of the collecting box (1).

2. A sludge dewatering device for sewage treatment according to claim 1, characterized in that: A feed hopper (3) is fixedly connected to the top of the dehydration filter cartridge (2) on the side close to the drive motor (4); the feed hopper (3) is a funnel-shaped structure; a drain pipe (5) is fixedly connected to the bottom of the bottom end of the dehydration filter cartridge (2); the bottom of the drain pipe (5) is fixedly connected to the collection box (1); and the bottom of the dehydration filter cartridge (2) is connected to the inside of the collection box (1) via the drain pipe (5).

3. A sludge dewatering device for sewage treatment according to claim 2, characterized in that: Support ears (18) are fixedly connected to both sides of the middle of one side of the connecting plate (9); a transmission worm (19) is rotatably connected to the centers of the tops of the two support ears (18); a transmission worm wheel (20) is fixedly connected to the middle of the outer wall of the threaded sleeve (11); the transmission worm wheel (20) is meshedly connected to the middle of the transmission worm (19); and rotating heads are fixedly connected to both ends of the transmission worm (19).

4. A sludge dewatering device for sewage treatment according to claim 3, characterized in that: The opening of the V-shaped groove (15) gradually narrows from a side close to the inner wall of the dehydration filter cartridge (2) to a side away from the dehydration filter cartridge (2), and a chamfer extending to the bottom edge of the resistance stopper (14) is provided at the opening of the V-shaped groove (15).

5. A sludge dewatering device for sewage treatment according to claim 4, characterized in that: The lengths of the central guide rod (7) and the positioning guide rod (8) are equal, the lengths of the central guide rod (7) and the positioning guide rod (8) are both greater than the length of the positioning frame (6), and the length of the external threaded sleeve (12) is less than half the length of the positioning frame (6).

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