Sludge discharging device and sludge discharging method for sewage treatment

Abstract

The present application relates to a sludge discharging device and method for sewage treatment, comprising a treatment container, a sludge discharging hole is arranged at the inner bottom of the treatment container, a fixing sleeve is arranged in the sludge discharging hole, a counterweight column is slidably arranged in the fixing sleeve, a floating ball is arranged at the upper end of the counterweight column, and a sludge discharging opening is arranged on the side surface of the lower end of the fixing sleeve; a movable sleeve is sleeved on the fixing sleeve, a pressing frame is transversely arranged in the treatment container, and the size of the pressing frame is matched with the size of the treatment container; a plurality of slots and a plurality of movable pieces are arranged on the pressing frame; the movable sleeve is fixedly arranged in the center of the pressing frame; the movable sleeve is connected with the counterweight column through a linkage assembly, and the movement directions of the counterweight column and the movable sleeve are opposite when they move in linkage; the device further comprises a gas charging and discharging unit and a driving unit; the upper layer of the sludge is used for water isolation, the lower part of the sludge can be conveniently partially discharged, and the driving relies on the buoyancy of the internal water received by the floating ball, and the sludge discharging has good energy-saving effect.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a sludge removal device and method for wastewater treatment. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming a part of the daily lives of ordinary people.

[0003] Based on the source of wastewater, wastewater treatment is generally divided into industrial wastewater treatment and domestic wastewater treatment. Industrial wastewater includes industrial wastewater, agricultural wastewater, and medical wastewater, while domestic wastewater is wastewater generated in daily life. It refers to a complex mixture of various forms of inorganic and organic matter, including: ① floating and suspended solid particles of various sizes; ② colloidal and gel-like diffuses; ③ pure solutions.

[0004] In various types of wastewater treatment processes, sludge sedimentation and sludge discharge are generally involved. Currently, sludge discharge is mostly achieved by pumping or draining water for treatment. However, neither method is very efficient. The former is prone to mixing with liquid, while the latter is prone to carrying out sludge. A sludge discharge device and method that can continuously and efficiently treat wastewater is needed to solve these problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sludge discharge device and sludge discharge method for sewage treatment, in view of the above-mentioned defects of the prior art.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A sludge removal device for wastewater treatment is constructed, comprising a treatment container, wherein a sludge discharge hole is provided at the bottom of the treatment container, a fixed sleeve is inserted through the sludge discharge hole, a counterweight column is slidably disposed within the fixed sleeve, a float is provided at the upper end of the counterweight column, and a sludge discharge opening is provided on the side surface of the lower end of the fixed sleeve; a movable sleeve is fitted onto the fixed sleeve, and a compression frame is horizontally disposed inside the treatment container, the size of the compression frame matching the size of the treatment container; the compression frame is provided with multiple slots and multiple movable plates that open and close the slots one by one; the movable sleeve is inserted and fixed at the center of the compression frame; the movable sleeve and the counterweight column are connected by a linkage component, and the counterweight column and the movable sleeve move in opposite directions when they move in linkage; the device further includes an air inflation / deflation unit for inflating and deflation of the float and a drive unit for driving the multiple movable plates to move synchronously.

[0008] The sludge removal device for wastewater treatment according to the present invention comprises a plurality of slots arranged horizontally side by side on the extrusion frame; a movable plate is rotatably disposed in the slot via a rotating shaft; the rotating shaft is rotatably connected to the extrusion frame, and a drive gear is coaxially fixed on the rotating shaft, and the plurality of drive gears are arranged in a straight line; the drive unit includes a rack and a transverse moving assembly for driving the rack to move laterally, and the plurality of drive gears mesh with the rack.

[0009] The sludge removal device for wastewater treatment according to the present invention includes a transverse moving assembly comprising an adjusting rod, an adjusting wheel, and a guide rod; the adjusting rod is rotatably mounted on the treatment container, and a sealed bearing for mounting the adjusting rod is provided on the treatment container; an internal threaded sleeve is threaded onto the adjusting rod, and a guide sleeve is slidably mounted on the guide rod, the internal threaded sleeve being fixedly connected to the guide sleeve; a rack is located between the guide rod and the drive gear, and the back side of the rack is fixedly connected to the guide sleeve.

[0010] The sludge removal device for wastewater treatment according to the present invention includes an adjusting wheel located outside the treatment container, and the adjusting wheel being coaxially and fixedly connected to the adjusting rod.

[0011] The sludge removal device for sewage treatment according to the present invention includes a linkage component comprising a gear frame installed on the upper end of the fixed sleeve, a gear located between the counterweight column and the movable sleeve on the gear frame, and longitudinal gear grooves that cooperate with the gear on the outer surface of the counterweight column and the inner wall of the movable sleeve.

[0012] The sludge removal device for sewage treatment according to the present invention includes a gear groove composed of a combination of multiple longitudinally distributed annular grooves, and a gear frame having multiple gears evenly distributed around the counterweight column.

[0013] The sludge discharge device for wastewater treatment according to the present invention wherein the edge of the extrusion frame is connected to the inner wall of the treatment container by multiple elastic bands.

[0014] A sludge removal method for wastewater treatment, applied to the sludge removal device for wastewater treatment as described above, is implemented as follows:

[0015] In the initial state, the counterweight column is located at the lower end of the fixed sleeve and blocks the mud discharge opening, and the movable plate is in the open state;

[0016] The sludge settles through multiple slots. When the sludge in the treatment container passes the extrusion frame and reaches the set depth, the drive unit drives multiple movable plates to move synchronously to close the corresponding slots. The inflation and deflation unit inflates the float. The float is gradually pulled upward by the buoyancy of the water in the treatment container to open the sludge discharge hole. At the same time, the upward movement of the counterweight column will drive the movable sleeve to move downward synchronously, which in turn drives the extrusion frame to move downward to squeeze the sludge below. The squeezed sludge is discharged through the sludge discharge hole and the sludge discharge port.

[0017] After the sludge discharge operation is completed, the air-filling and air-releasing unit vents the float, the counterweight column gradually descends to reset, driving the movable sleeve to rise synchronously, the squeezing frame resets, and the drive unit drives multiple movable plates to reset and open the slot.

[0018] The beneficial effects of this invention are as follows: In the initial state, the counterweight column is located at the lower end of the fixed sleeve and blocks the sludge discharge opening, while the movable plate is in the open state; the sludge passes through multiple slots for sedimentation. When the sludge in the treatment container passes over the extrusion frame and reaches a set depth, the drive unit drives multiple movable plates to move synchronously to close the corresponding slots. The inflation / deflation unit inflates the float, and the float, under the buoyancy of the water in the treatment container, gradually pulls the counterweight column upward to open the sludge discharge opening. At the same time, the upward movement of the counterweight column will drive the movable sleeve to move downward synchronously, thereby driving the extrusion frame to move downward to extrude the sludge below. The extruded sludge is discharged through the sludge discharge opening and the sludge discharge hole. After the sludge discharge operation is completed, the inflation / deflation unit deflates the float, the counterweight column gradually moves downward to reset, driving the movable sleeve to move upward synchronously, the extrusion frame to reset, and the drive unit drives multiple movable plates to reset and open the slots.

[0019] By using the method of this application, the upper layer of sludge is used for water isolation, which makes it easier to partially discharge the lower layer of sludge. The discharge is driven by the buoyancy of the internal water on the float, resulting in good energy-saving sludge discharge and minimal impact on continuous wastewater treatment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0021] Figure 1 This is a schematic diagram of the sludge removal device for wastewater treatment according to a preferred embodiment of the present invention;

[0022] Figure 2 This is a top view of the sludge discharge device extrusion frame for wastewater treatment according to a preferred embodiment of the present invention;

[0023] Figure 3This is a schematic diagram of the linkage component structure of the sludge discharge device for sewage treatment according to a preferred embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0025] A preferred embodiment of the sludge removal device for wastewater treatment of the present invention, such as... Figure 1 As shown, see also Figure 2 and Figure 3 The device includes a processing container 1, with a sludge discharge hole 10 at the bottom of the container. A fixed sleeve 11 passes through the sludge discharge hole 10, and a counterweight column 2 is slidably disposed within the fixed sleeve 11. A float 20 is disposed at the upper end of the counterweight column 2, and a sludge discharge opening 12 is disposed on the side surface of the lower end of the fixed sleeve 11. A movable sleeve 13 is fitted onto the fixed sleeve 11. A compression frame 3 is horizontally disposed inside the processing container 1, and the size of the compression frame 3 matches the size of the processing container 1. The compression frame 3 is provided with multiple slots 30 and multiple movable pieces 31 that open and close the slots one by one. The movable sleeve 13 is fixedly disposed in the center of the compression frame 3. The movable sleeve 13 is connected to the counterweight column 2 through a linkage component 4, and the counterweight column 2 and the movable sleeve 13 move in opposite directions when they move in linkage. The device also includes an air inflation / deflation unit for inflating and deflation of the float and a drive unit 5 for driving the multiple movable pieces 31 to move synchronously.

[0026] In the initial state, the counterweight column 2 is located at the lower end of the fixed sleeve 11 and blocks the sludge discharge opening 12, and the movable piece 31 is in the open state. The sludge passes through multiple slots 30 for sedimentation. When the sludge in the treatment container 1 passes the extrusion frame 3 and reaches the set depth, the drive unit 5 drives multiple movable pieces 31 to move synchronously to close the corresponding slots 30. The inflation and deflation unit inflates the float 20. The float 20 is gradually pulled upward by the buoyancy of the water in the treatment container 1 to open the sludge discharge opening 12. At the same time, the upward movement of the counterweight column 2 will drive the movable sleeve 13 to move downward synchronously, thereby driving the extrusion frame 3 to move downward to extrude the sludge below. The extruded sludge is discharged through the sludge discharge opening 12 and the sludge discharge hole 10. After the sludge discharge operation is completed, the inflation and deflation unit deflates the float 20, the counterweight column 2 gradually moves downward to reset, drives the movable sleeve 13 to move upward synchronously, the extrusion frame 3 resets, and the drive unit 5 drives multiple movable pieces 31 to reset and open the slots. Figure 1 As shown in the diagram, 6 is the water layer and 7 is the sludge layer;

[0027] By using the method of this application, the upper layer of sludge is used for water isolation, which makes it easier to partially discharge the lower layer of sludge. The discharge is driven by the buoyancy of the internal water on the float, resulting in good energy-saving sludge discharge and minimal impact on continuous wastewater treatment.

[0028] Preferably, multiple slots 30 on the extrusion frame 3 are arranged horizontally side by side; the movable piece 31 is rotatably disposed in the slot 30 via a rotating shaft 32; the rotating shaft 32 is rotatably connected to the extrusion frame 3, and a drive gear 33 is coaxially fixed on the rotating shaft 32, with multiple drive gears 33 arranged in a straight line; the drive unit 5 includes a rack 50 and a transverse moving component 51 for driving the rack to move laterally, with multiple drive gears 33 meshing with the rack 50; the structure is reasonable and compact, with good drive reliability and convenient for synchronous control.

[0029] Preferably, the lateral movement assembly 51 includes an adjusting rod 510, an adjusting wheel 511, and a guide rod 512. The adjusting rod 510 is rotatably mounted on the processing container 1, and a sealed bearing 14 for mounting the adjusting rod is provided on the processing container 1. An internal threaded sleeve 513 is threaded onto the adjusting rod 510, and a guide sleeve 514 is slidably mounted on the guide rod 512. The internal threaded sleeve 513 is fixedly connected to the guide sleeve 514. The rack 50 is located between the guide rod 512 and the drive gear 33, and the back of the rack 50 is fixedly connected to the guide sleeve 514. The adjusting wheel 511 is located outside the processing container 1, and the adjusting wheel 511 is coaxially fixedly connected to the adjusting rod 510. Using a principle similar to a lead screw, the adjusting wheel 511 is rotated manually or electrically, which drives the adjusting rod 510 to rotate, thereby driving the internal threaded sleeve 513 to move laterally, which in turn drives the guide sleeve 514 to move laterally, and thus drives the rack 50 to move laterally. The rack 50 will not shift or loosen, and the drive reliability is good.

[0030] Preferably, the linkage component 4 includes a gear frame 40 installed on the upper end of the fixed sleeve 11. The gear frame 40 is provided with a gear 41 located between the counterweight column 2 and the movable sleeve 13. The outer surface of the counterweight column 2 and the inner wall of the movable sleeve 13 are provided with longitudinal gear grooves 42 that cooperate with the gear 41. Preferably, the gear grooves 42 are composed of multiple longitudinally distributed annular grooves. The gear frame 40 is provided with multiple grooves that are evenly distributed around the counterweight column 2. The linkage structure is simple and the linkage reliability is good.

[0031] Preferably, the edge of the extrusion frame 3 is connected to the inner wall of the processing container 1 by multiple elastic bands 34 to facilitate the repositioning of the extrusion frame 3.

[0032] A sludge removal method for wastewater treatment, applied to the sludge removal device for wastewater treatment as described above, is implemented as follows:

[0033] In the initial state, the counterweight column is located at the lower end of the fixed sleeve and blocks the mud discharge opening, and the movable plate is in the open state;

[0034] The sludge settles through multiple slots. When the sludge in the treatment container passes the extrusion frame and reaches the set depth, the drive unit drives multiple movable plates to move synchronously to close the corresponding slots. The inflation and deflation unit inflates the float. The float is gradually pulled upward by the buoyancy of the water in the treatment container to open the sludge discharge hole. At the same time, the upward movement of the counterweight column will drive the movable sleeve to move downward synchronously, which in turn drives the extrusion frame to move downward to squeeze the sludge below. The squeezed sludge is discharged through the sludge discharge hole and the sludge discharge port.

[0035] After the sludge discharge operation is completed, the air-filling and air-releasing unit vents the float, the counterweight column gradually descends to reset, driving the movable sleeve to rise synchronously, the squeezing frame resets, and the drive unit drives multiple movable plates to reset and open the slot.

[0036] By using the method of this application, the upper layer of sludge is used for water isolation, which makes it easier to partially discharge the lower layer of sludge. The discharge is driven by the buoyancy of the internal water on the float, resulting in good energy-saving sludge discharge and minimal impact on continuous wastewater treatment.

[0037] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A sludge removal device for wastewater treatment, comprising a treatment container, characterized in that, The processing container has a sludge discharge hole at its inner bottom, a fixed sleeve passing through the sludge discharge hole, a counterweight column slidingly disposed within the fixed sleeve, a float ball at the upper end of the counterweight column, and a sludge discharge opening on the lower side surface of the fixed sleeve. A movable sleeve is fitted onto the fixed sleeve, and a compression frame is horizontally disposed inside the processing container, the size of which matches the size of the processing container. The compression frame has multiple slots and multiple movable plates that open and close the slots one-to-one. The movable sleeve is fixedly disposed at the center of the compression frame. The movable sleeve and the counterweight column are connected by a linkage component, and the counterweight column and the movable sleeve move in opposite directions when they move in linkage. The device also includes an air inflation / deflation unit for inflating and deflation of the float ball and a drive unit for driving the multiple movable plates to move synchronously. The extrusion frame has multiple slots arranged horizontally side by side; the movable piece is rotatably disposed in the slot via a rotating shaft; the rotating shaft is rotatably connected to the extrusion frame, and a drive gear is coaxially fixed on the rotating shaft, with multiple drive gears arranged in a straight line; the drive unit includes a rack and a lateral movement component that drives the rack to move laterally, with multiple drive gears meshing with the rack; The lateral movement assembly includes an adjusting rod, an adjusting wheel, and a guide rod. The adjusting rod rotatably passes through the processing container, and a sealed bearing is provided on the processing container to mount the adjusting rod. An internal threaded sleeve is threaded onto the adjusting rod, and a guide sleeve is slidably fitted onto the guide rod. The internal threaded sleeve is fixedly connected to the guide sleeve. A rack is located between the guide rod and the drive gear, and the back of the rack is fixedly connected to the guide sleeve. The adjusting wheel is located outside the processing container, and the adjusting wheel is coaxially fixedly connected to the adjusting rod. The linkage assembly includes a gear frame mounted on the upper end of the fixed sleeve. A gear is provided on the gear frame between the counterweight column and the movable sleeve. The outer surface of the counterweight column and the inner wall of the movable sleeve are both provided with longitudinal gear grooves that cooperate with the gear. The gear grooves are composed of multiple longitudinally distributed annular grooves, and the gear frame has multiple such grooves evenly distributed around the counterweight column. The edge of the extrusion frame is connected to the inner wall of the processing container through multiple elastic bands.

2. A sludge removal method for wastewater treatment, applied to the sludge removal device for wastewater treatment as described in claim 1, characterized in that, The implementation method is as follows: In the initial state, the counterweight column is located at the lower end of the fixed sleeve and blocks the mud discharge opening, and the movable plate is in the open state; The sludge settles through multiple slots. When the sludge in the treatment container passes the extrusion frame and reaches the set depth, the drive unit drives multiple movable plates to move synchronously to close the corresponding slots. The inflation and deflation unit inflates the float. The float is gradually pulled upward by the buoyancy of the water in the treatment container to open the sludge discharge hole. At the same time, the upward movement of the counterweight column will drive the movable sleeve to move downward synchronously, which in turn drives the extrusion frame to move downward to squeeze the sludge below. The squeezed sludge is discharged through the sludge discharge hole and the sludge discharge port. After the sludge discharge operation is completed, the air-filling and air-releasing unit vents the float, the counterweight column gradually descends to reset, driving the movable sleeve to rise synchronously, the squeezing frame resets, and the drive unit drives multiple movable plates to reset and open the slot.

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