CN117326775A - Sludge concentration device for sewage treatment plant - Google Patents

Abstract

The invention belongs to the technical field of sludge treatment, and particularly relates to a sludge concentration device for a sewage treatment plant, which comprises a base, wherein a concentration tank is fixedly arranged on the base, a dehydration mechanism for dehydrating and concentrating sludge by centrifugal force is arranged in the concentration tank, an extrusion scraping mechanism for stirring the sludge in the dehydration mechanism is also arranged in the concentration tank, the extrusion scraping mechanism and the dehydration mechanism are connected through a plurality of pushing cleaning mechanisms distributed in a circumferential array, the sludge in the dehydration mechanism is dehydrated and concentrated by pushing the plurality of pushing cleaning mechanisms downwards in the rotation process of the extrusion scraping mechanism, and the dehydrated sludge attached to the inner wall of the dehydration mechanism is scraped in the downward moving process of the extrusion scraping mechanism. According to the invention, the sewage in the sludge can be thrown out through the rotating filter cartridge by centrifugal force, and the sludge is extruded through the rotating pushing block which moves downwards, so that the dehydration and concentration of the sludge can be accelerated.

Description

A sludge concentration device for sewage treatment plants

Technical field

The present invention relates to the technical field of sludge treatment, and in particular to a sludge concentration device for sewage treatment plants.

Background technique

Sludge is a solid precipitated substance produced by water and sewage treatment processes, and sludge treatment involves reducing, stabilizing, and making harmless the sludge through concentration, conditioning, dehydration, stabilization, drying, or incineration. During the processing process, the higher the degree of sewage treatment, the more sludge residues will be produced that need to be treated. For modern sewage treatment plants, sludge treatment and disposal have become the most complex and expensive in the operation of sewage treatment systems. a part of.

In the process of sludge dehydration, existing sludge dehydration equipment generally squeezes and dehydrates the sludge. When the sludge contains some hard substances, the filter press cannot break the hard substances, thus greatly Reduced work efficiency; some use sludge centrifugal dehydration equipment to quickly throw out the water in the sludge through the centrifugal force generated when the filter drum rotates. For some sludge with different thicknesses, during the rotation of the drum When part of the sludge adheres to the inner wall of the filter drum, the filter holes on it will be blocked, affecting the dehydration effect of the sludge. Therefore, a sludge concentration device for sewage treatment plants is proposed.

Contents of the invention

In order to solve the shortcomings in the prior art, the present invention proposes a sludge concentration device for sewage treatment plants.

In order to achieve the above object, the present invention adopts the following technical solution: a sludge concentration device for sewage treatment plants, including a base. A concentration tank is fixedly installed on the base. A device is installed in the concentration tank to carry out sludge treatment by centrifugal force. A dehydration mechanism for dehydration and concentration. The concentration tank is also equipped with a squeezing and scraping mechanism that agitates the sludge in the dewatering mechanism. A plurality of pushing and cleaning mechanisms distributed in a circular array are between the squeezing and scraping mechanism and the dewatering mechanism. connection, during the rotation process of the squeezing and scraping mechanism, the sludge in the dewatering mechanism will be pressed down by multiple pushing and cleaning mechanisms for dehydration and concentration, and during the downward movement of the squeezing and scraping mechanism, the sludge attached to the dewatering mechanism will be dehydrated and concentrated. The dewatered sludge on the inner wall is scraped off. When the plurality of pushing and cleaning mechanisms are in a vertical state, the dewatering mechanism will be dredged from the inside to the outside as the plurality of pushing and cleaning mechanisms rotate.

Preferably, the concentration tank includes a tank body fixedly installed on the base, a tank cover is detachably installed on the top of the tank body, and a mud inlet pipe and a water outlet pipe are fixedly installed on the side of the tank body, so A mud outlet pipe is fixedly installed through the center of the bottom of the tank. The mud inlet pipe and the mud outlet pipe are respectively provided with a gate valve one and a gate valve two.

Preferably, the dehydration mechanism includes a filter cylinder whose bottom is rotatably connected to the inner wall of the bottom of the tank. An annular cylinder is fixedly installed on the top of the filter cylinder, and a ring gear is fixedly mounted on the outside of the annular cylinder. The dehydration mechanism also It includes a motor that penetrates the tank cover and is fixedly connected to it. The end of the output shaft of the motor is fixed with a rotating shaft. The bottom end of the rotating shaft is fixed with a gear. The gear is meshed with the ring gear.

Preferably, the squeezing and scraping mechanism includes a second motor that penetrates the can lid and is fixedly connected to it. The end of the output shaft of the second motor is fixedly mounted with a rotating column, and the outer sliding sleeve of the rotating column is provided with a pusher. block, the pushing block is slidingly connected to the inner wall of the filter cylinder, and the annular cylinder and the pushing block are connected together through a plurality of pushing and cleaning mechanisms.

Preferably, the push cleaning mechanism includes a guide rail fixedly installed on the top of the push block and a hinge block slidingly connected to the annular cylinder. A slider is slidably installed on the guide rail, and fittings are fixedly installed on both sides of the slider. Heavy cake, the slide block and the hinge block are respectively hinged with swing arm 2 and swing arm 1. The same circular shaft is rotatably installed between the swing arm 1 and the swing arm 2. The side of the circular shaft is fixedly installed. There are a plurality of elastic columns distributed at equal intervals, an annular groove is provided on the inner wall of the annular cylinder, and the hinge block is slidingly connected to the inner wall of the annular groove.

Preferably, the bottom of the push block is provided with a plurality of grooves distributed in a circular array, and a scraper is rotatably installed in the push block.

Preferably, a plurality of limiting grooves distributed in a circular array are provided on the side of the rotating column, a circular hole is provided in the center of the pushing block, the rotating column is slidingly connected to the inner wall of the circular hole, and the circular hole is slidably connected to the inner wall of the circular hole. The inner wall of the hole is fixedly installed with a limiting rib that is slidably installed in a plurality of limiting grooves. An auger is provided with a sliding sleeve on the side of the rotating column. The auger includes a cylinder that is slidably sleeved on the rotating column. , The inner wall of the cylinder is fixedly installed with two limiting ribs slidably installed in a plurality of limiting grooves, and the outer side of the cylinder is fixedly sleeved with spiral blades.

Preferably, the bottom of the cylinder is provided with a seal, and a circular groove is provided at the bottom of the rotating column. An elastic telescopic rod is fixedly installed on the inner wall of the bottom of the cylinder. The top of the elastic telescopic rod is in contact with the circular groove. The top inner wall is fixedly connected.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention can throw out the sewage in the sludge through centrifugal force through the rotating filter cylinder, and squeeze the sludge through the rotating downward pushing block, thereby accelerating the dehydration and concentration of the sludge;

2. The rotating column drives the auger to stir the sludge to ensure that the water content of each part of the sludge tends to be consistent, so that the dehydration effect of the filter cartridge can act evenly on the sludge everywhere;

3. During the spiral downward movement of the push block, multiple scrapers can be used to scrape the dewatered sludge attached to the inner wall of the filter barrel, which can prevent the dewatered sludge from adhering to the inner wall of the filter barrel and not easily falling off. After the sludge is completely dehydrated, the downwardly moving push block can push the dehydrated sludge out of the sludge outlet pipe;

4. When the pushing block moves down to the lowest position, multiple pushing and cleaning mechanisms can clear the filter cartridge from the inside to the outside while revolving around the rotating column, reducing the situation where the filter cartridge is blocked and cannot separate muddy water.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a sludge concentration device for sewage treatment plants proposed by the present invention;

Figure 2 is another structural schematic diagram of a sludge concentration device for sewage treatment plants proposed by the present invention;

Figure 3 is a side cross-sectional view of a sludge thickening device for sewage treatment plants proposed by the present invention;

Figure 4 is an enlarged structural schematic diagram of part A in Figure 3;

Figure 5 is a schematic structural diagram of a cleaning mechanism in a sludge thickening device for sewage treatment plants proposed by the present invention;

Figure 6 is a schematic diagram of the separation structure of the push block and the rotating column in a sludge thickening device for sewage treatment plants proposed by the present invention;

Figure 7 is a schematic diagram of the separation structure of the rotating column, auger and elastic telescopic rod in a sludge thickening device for sewage treatment plants proposed by the present invention.

In the picture: 1. Base; 2. Concentration tank; 21. Tank body; 22. Tank cover; 23. Mud inlet pipe; 24. Water outlet pipe; 25. Mud outlet pipe; 3. Flap valve 1; 4. Flap plate Valve two; 5. Squeezing and scraping mechanism; 51. Rotating column; 511. Limiting groove; 512. Round groove; 52. Pushing block; 521. Groove; 522. Scraper; 523. Round hole; 524. Limit rib one; 53, auger; 531, cylinder; 532, spiral blade; 533, limit rib two; 54, motor two; 55, elastic telescopic rod; 6, dehydration mechanism; 61, filter cartridge; 62, Annular cylinder; 621, annular groove; 63, ring gear; 64, motor one; 65, rotating shaft; 66, gear; 7, push cleaning mechanism; 71, guide rail; 72, slider; 73, counterweight cake; 74, hinge Block; 75, swing arm one; 76, swing arm two; 77, circular shaft; 78, elastic column.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1 to 7. The present invention provides a technical solution: a sludge concentration device for sewage treatment plants, including a base 1. A concentration tank 2 is fixedly installed on the base 1, and a centrifugal force is installed in the concentration tank 2. A dewatering mechanism 6 for dehydrating and concentrating sludge. The concentration tank 2 is also equipped with a squeezing and scraping mechanism 5 for stirring and dehydrating the sludge in the sludge. The squeezing and scraping mechanism 5 and the dewatering mechanism 6 are connected by a circular array of A plurality of pushing and cleaning mechanisms 7 are connected. During the rotation of the squeezing and scraping mechanism 5, the sludge in the squeezing and dewatering mechanism 6 will be pressed down by the plurality of pushing and cleaning mechanisms 7 for dehydration and concentration, and the sludge in the squeezing and scraping mechanism 5 will move downward. During the process, the dewatered sludge attached to the inner wall of the dewatering mechanism 6 will be scraped off. When the plurality of pushing and cleaning mechanisms 7 are in a vertical state, the rotation of the plurality of pushing and cleaning mechanisms 7 will cause the dewatering mechanism 6 to be cleaned from the inside to the outside. of dredging.

The concentration tank 2 includes a tank body 21 fixedly installed on the base 1. A tank cover 22 is detachably installed on the top of the tank body 21. A mud inlet pipe 23 and a water outlet pipe 24 are fixedly installed on the side of the tank body 21. The tank body A mud outlet pipe 25 is fixedly installed through the bottom center of 21. The mud inlet pipe 23 and the mud outlet pipe 25 are respectively provided with a gate valve 3 and a gate valve 2 4.

The dehydration mechanism 6 includes a filter cylinder 61 whose bottom is rotatably connected to the inner wall of the bottom of the tank 21. An annular cylinder 62 is fixedly installed on the top of the filter cylinder 61, and a ring gear 63 is fixedly mounted on the outside of the annular cylinder 62. The dehydration mechanism 6 also includes a penetrating tank. Cover 22 and a motor 64 fixedly connected thereto, a rotating shaft 65 is fixedly installed at the end of the output shaft of the motor 64, a gear 66 is fixedly installed at the bottom end of the rotating shaft 65, and the gear 66 is meshed with the ring gear 63.

The squeezing and scraping mechanism 5 includes a second motor 54 that penetrates the can lid 22 and is fixedly connected to it. The end of the output shaft of the second motor 54 is fixedly installed with a rotating column 51, and the outer sliding sleeve of the rotating column 51 is provided with a push block 52. The pushing block 52 is slidingly connected to the inner wall of the filter cylinder 61 , and the annular cylinder 62 and the pushing block 52 are connected together through a plurality of pushing and cleaning mechanisms 7 .

The push cleaning mechanism 7 includes a guide rail 71 fixedly installed on the top of the push block 52 and a hinge block 74 slidingly connected to the annular cylinder 62. A slide block 72 is slidably installed on the guide rail 71, and counterweights are fixedly installed on both sides of the slide block 72. The cake 73, the sliding block 72 and the hinge block 74 are respectively hinged with a swing arm 76 and a swing arm 75. The same circular shaft 77 is installed for rotation between the swing arm 1 75 and the swing arm 2 76. The sides of the circular shaft 77 are fixed. A plurality of elastic columns 78 distributed at equal intervals are installed. An annular groove 621 is provided on the inner wall of the annular barrel 62 . The hinge block 74 is slidingly connected to the inner wall of the annular groove 621 .

Further, arc-shaped blocks are fixedly installed on the top and bottom of the hinge block 74, and limit ring grooves are provided on the top and bottom inner walls of the annular groove 621. The two arc-shaped blocks are slidably installed in the corresponding limit ring grooves. , the hinge block 74 can be prevented from falling off from the annular groove 621 through the cooperation of the two sets of arc-shaped blocks and the limiting annular groove.

The bottom of the push block 52 is provided with a plurality of grooves 521 distributed in a circular array, and a scraper 522 is rotatably installed in the push block 52 .

A plurality of limiting grooves 511 distributed in a circular array are provided on the side of the rotating column 51. A circular hole 523 is provided in the center of the pushing block 52. The rotating column 51 is slidingly connected to the inner wall of the circular hole 523. The inner wall of the circular hole 523 is A limiting rib 524 is fixedly installed and slidably installed in a plurality of limiting grooves 511. The side sliding sleeve of the rotating column 51 is provided with an auger 53. The auger 53 includes a cylinder 531 slidably sleeved on the rotating column 51. The inner wall of the cylinder 531 is fixedly installed with two limiting ribs 533 that are slidably installed in a plurality of limiting grooves 511. The outer side of the cylinder 531 is fixed with a spiral blade 532.

Furthermore, through the cooperation of the multiple sets of limiting ribs 524 and the limiting grooves 511, the rotating column 51 can not only drive the pushing block 52 to rotate synchronously, but also the pushing block 52 can move up and down along the axis of the rotating column 51;

Through the cooperation of the multiple sets of circular holes 523 and the limiting grooves 511, the rotating column 51 can not only drive the auger 53 to rotate synchronously, but also the auger 53 can move up and down along the axis of the rotating column 51.

The bottom of the cylinder 531 is provided with a seal, and a circular groove 512 is provided at the bottom of the rotating column 51. An elastic telescopic rod 55 is fixedly installed on the inner wall of the bottom of the cylinder 531. The top of the elastic telescopic rod 55 is fixedly connected to the top inner wall of the circular groove 512. .

Further, when the push block 52 moves downward to push the dewatered sludge into the mud inlet pipe 23, and subsequently opens the gate valve 3, the subsequently pumped sludge can remove the dewatered sludge accumulated in the mud inlet pipe 23. Push it back into the filter cartridge 61.

In this embodiment: during use, the sludge is pumped into the filter cylinder 61 through the mud inlet pipe 23. As the sludge in the filter cylinder 61 continues to increase, it will push the push block 52 to rise. When the push block 52 rises When it reaches the highest point, the gate valve 3 can be closed. At this time, the gate valve 2 4 is also in a closed state. Then the motor 64 is started. The motor 64 rotates and drives the gear 66 to rotate through the rotating shaft 65. The gear 66 then passes through the teeth. The ring 63 drives the annular cylinder 62 and the filter cylinder 61 to rotate. During the rotation of the filter cylinder 61, the water in the sludge can be thrown out by centrifugal force, so that the water in the sludge can seep out of the filter cylinder 61 and be discharged through the outlet pipe 24;

During the rotation of motor one 64, motor two 54 is started simultaneously. The rotation of motor two 54 will drive the push block 52 and the plurality of pushing cleaning mechanisms 7 to rotate through the rotating column 51, and control the steering of motor two 54 so that the push block 52 and The rotation direction of the filter cartridge 61 is opposite. During the rotation of the pushing cleaning mechanism 7, under the counterweight of the two counterweight cakes 73, the slider 72 will be pushed away from the rotation column 51. During this process, the slider 72 will The pushing guide rail 71 moves downward and pushes the pushing block 52 downward. The pushing block 52 moves downward to squeeze the sludge in the filter cartridge 61. By exerting pressure on the sludge, the moisture in the sludge can be accelerated to seep out;

During the rotation of the rotating column 51, the auger 53 will be driven to rotate. The rotation of the auger 53 will stir the sludge in the filter cylinder 61. By stirring the sludge, it can be caused to tumble, so that the sludge located in the center of the filter cylinder 61 will tumble. to a position close to the inner wall of the filter cartridge 61, thereby accelerating the dewatering speed of the sludge;

When there is no more water seeping out of the sludge in the filter cylinder 61, the gate valve 24 can be opened, and the sludge can be pushed into the sludge outlet pipe 25 and passed through under the continuous downward movement of the pushing block 52. The sludge outlet pipe 25 is discharged. As the pushing block 52 moves downward, the auger 53 will be driven into the sludge outlet pipe 25. With the rotation of the auger 53, the dehydrated sludge in the filter cylinder 61 can be discharged from the sludge outlet. Accelerate discharge in tube 25;

When the pushing block 52 moves downward and follows the rotation of the rotating column 51, the plurality of scrapers 522 will tightly press against the inner wall of the filter cylinder 61 under the action of centrifugal force. Later, when the annular cylinder 62 moves downward, Scrape off the dewatered sludge attached to the inner wall of the filter cylinder 61;

When the bottom of the pushing block 52 is in contact with the inner wall of the bottom of the tank 21, the circular shafts 77 on the plurality of pushing cleaning mechanisms 7 will be in a vertical state, and part of the elastic columns 78 on the side of the circular shaft 77 will be inserted into the filter cartridge 61 In the filter hole, the other part of the elastic column 78 will be against the inner wall of the filter barrel 61, and during the revolution of the circular shaft 77 around the axis of the rotating column 51 as the center of the circle, the circular shaft 77 will rotate with its own axis as the center of the circle, As the circular shaft 77 rotates, the elastic columns 78 located on its side will be inserted into each filter hole on the filter cylinder 61 in sequence, so that the sludge blocked in the filter holes of the filter cylinder 61 can be ejected from the inside to the outside. Complete the dredging of filter cartridge 61.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed in the present invention, implement the technical solutions of the present invention. Equivalent substitutions or changes of the inventive concept thereof shall be included in the protection scope of the present invention.

Claims (8)

1. A sludge concentration device for sewage treatment plants, including a base (1), characterized in that: a concentration tank (2) is fixedly installed on the base (1), and a through-pass tank is installed in the concentration tank (2). A dewatering mechanism (6) for dehydrating and concentrating sludge by centrifugal force. The concentration tank (2) is also equipped with a squeezing and scraping mechanism (5) for stirring the sludge in the dewatering mechanism (6). The squeezing and scraping mechanism is The mechanism (5) and the dewatering mechanism (6) are connected by a plurality of pushing and cleaning mechanisms (7) distributed in a circular array. During the rotation of the squeezing and scraping mechanism (5), the plurality of pushing and cleaning mechanisms (7) will pass through. ) Press down to squeeze the sludge in the dewatering mechanism (6) for dehydration and concentration, and during the downward movement of the squeezing and scraping mechanism (5), the dewatered sludge attached to the inner wall of the dewatering mechanism (6) will be scraped off , when the plurality of pushing and cleaning mechanisms (7) are in a vertical state, the dewatering mechanism (6) will be dredged from the inside to the outside as the plurality of pushing and cleaning mechanisms (7) rotate. 2. A sludge concentration device for sewage treatment plants according to claim 1, characterized in that: the concentration tank (2) includes a tank (21) fixedly installed on the base (1), and the tank A tank cover (22) is removably installed on the top of the tank (21), and a mud inlet pipe (23) and a water outlet pipe (24) are fixedly installed on the side of the tank (21). The tank (21) ) has a mud outlet pipe (25) fixedly installed through the center of the bottom. The mud inlet pipe (23) and the mud outlet pipe (25) are respectively provided with a gate valve (3) and a gate valve (4). . 3. A sludge concentration device for sewage treatment plants according to claim 2, characterized in that: the dehydration mechanism (6) includes a filter cartridge (61) whose bottom is rotatably connected to the inner wall of the bottom of the tank (21), An annular cylinder (62) is fixedly installed on the top of the filter cylinder (61), and a ring gear (63) is fixedly mounted on the outside of the annular cylinder (62). The dehydration mechanism (6) also includes a penetrating tank cover ( 22) A motor (64) fixedly connected to it, a rotating shaft (65) is fixedly installed at the end of the output shaft of the motor (64), and a gear (66) is fixedly installed at the bottom end of the rotating shaft (65), The gear (66) is meshed with the ring gear (63). 4. A sludge concentration device for sewage treatment plants according to claim 3, characterized in that: the squeezing and scraping mechanism (5) includes two motors (2) that penetrate the tank cover (22) and are fixedly connected thereto. 54), the end of the output shaft of the second motor (54) is fixedly installed with a rotating column (51), and the outer sliding sleeve of the rotating column (51) is equipped with a push block (52), and the push block (52) 52) is slidingly connected to the inner wall of the filter cylinder (61), and the annular cylinder (62) and the pushing block (52) are connected together through a plurality of pushing and cleaning mechanisms (7). 5. A sludge concentration device for sewage treatment plants according to claim 4, characterized in that: the push cleaning mechanism (7) includes a guide rail (71) fixedly installed on the top of the push block (52) and a guide rail (71) fixedly installed on the top of the push block (52). A hinge block (74) is slidably connected to the annular cylinder (62). A slider (72) is slidably installed on the guide rail (71). Counterweight cakes (73) are fixedly installed on both sides of the slider (72). , the slide block (72) and the hinge block (74) are respectively hinged with swing arm two (76) and swing arm one (75), and the swing arm one (75) and the swing arm two (76) rotate between each other. The same circular shaft (77) is installed. A plurality of elastic columns (78) distributed at equal intervals are fixedly installed on the side of the circular shaft (77). An annular groove (621) is provided on the inner wall of the annular cylinder (62). ), the hinge block (74) is slidingly connected to the inner wall of the annular groove (621). 6. A sludge concentration device for sewage treatment plants according to claim 4, characterized in that: the bottom of the push block (52) is provided with a plurality of grooves (521) distributed in a circular array, so A scraper (522) is rotatably installed in the pushing block (52). 7. A sludge concentration device for sewage treatment plants according to claim 4, characterized in that: a plurality of limiting grooves (511) distributed in a circular array are provided on the side of the rotating column (51), so A circular hole (523) is provided in the center of the pushing block (52), the rotating column (51) is slidingly connected to the inner wall of the circular hole (523), and a sliding sliding plate is fixedly installed on the inner wall of the circular hole (523) A limiting rib (524) is installed in a plurality of limiting grooves (511). The side sliding sleeve of the rotating column (51) is provided with an auger (53). The auger (53) includes a sliding sleeve. On the cylinder (531) on the rotating column (51), two limiting ribs (533) slidably installed in a plurality of limiting grooves (511) are fixedly installed on the inner wall of the cylinder (531). The outer fixed sleeve of the cylinder (531) is provided with a spiral blade (532). 8. A sludge concentration device for sewage treatment plants according to claim 7, characterized in that: the bottom of the cylinder (531) is provided with a seal, and the bottom end of the rotating column (51) is provided with a circular opening. Groove (512), an elastic telescopic rod (55) is fixedly installed on the bottom inner wall of the cylinder (531), and the top end of the elastic telescopic rod (55) is fixedly connected to the top inner wall of the circular groove (512).