Sludge thickener

Abstract

The utility model discloses a sludge thickener which comprises a barrel, a driving gear motor is mounted at the top end of the barrel through a walkway plate, the bottom of the driving gear motor is in transmission connection with a thickening sludge scraping main shaft vertically arranged in the center of the barrel, and the driving gear motor drives the thickening sludge scraping main shaft to rotate; the rotary arm part and the concentration grid plate are rotated to concentrate and stir sludge, the sludge scraping plate is used for scraping and cleaning the sludge at the bottom of the barrel, and the main shaft of the concentration sludge scraping plate drives the conical hopper pipe plate part in the sludge discharging conical hopper to scrape and stir the sludge. According to the sludge concentrating and stirring device, sludge precipitated in the sludge discharging conical hopper can be concentrated and stirred to keep an active state, and the sludge can be smoothly discharged to the outside from the sludge discharging pipe fitting, so that the problem that the sludge discharging pipe fitting is blocked due to the fact that the sludge discharging conical hopper is blocked by no precipitate is solved, and the sludge concentrating and stirring treatment efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and particularly relates to a sludge thickener. Background Art

[0002] The sludge thickener is a commonly used sludge discharging device, which is used in large-diameter circular sedimentation tanks in the sewage treatment process to discharge the sludge settled at the bottom of the tank. It has the characteristics of simple structure, low power consumption, obvious sludge discharging effect, energy conservation and environmental protection, and is widely used in various sewage treatment systems such as metallurgy, chemical industry and civil use. With the rapid development of science and technology, a scraper adjusting device for a sludge thickener has also been technically improved. However, there are deficiencies in the structure of the existing sludge thickener. The scraper is directly welded to the rotary arm through a connecting rod. Once installed, the scraper is fixed and the deflection angle cannot be adjusted anymore, so it is not convenient to adapt to sludge sedimentation tanks with different concentrations. Because when the sludge concentration is low, the deflection angle of the scraper can be increased to accelerate the flow of the sludge at the bottom of the tank to the center and improve the operation efficiency. When the sludge concentration is high, the deflection angle of the scraper can be reduced to reduce the resistance received by the scraper and ensure the safe operation of the equipment. Once the original structure needs to adjust the scraper angle, all the connecting rods must be cut off, then the angle between the scraper and the rotary arm is corrected and adjusted, and then the connecting rod and the rotary arm are welded and fixed again. The adjustment is rather cumbersome.

[0003] Therefore, a scraper adjusting device for a sludge thickener with the publication number of "CN209128283U" has a structure including a driving mechanism, a transmission gear ring, a main shaft, a rotary arm, a scraper, an adjusting connecting rod, a positioning bolt, an adjusting plate, a locking nut, a shaft sleeve, an adjusting rotating shaft, a scraper fixing bolt, a fixed support and a flower basket adjusting bolt. It is provided with a shaft sleeve and an adjusting rotating shaft for realizing the forward and reverse rotation of the scraper. There is an adjusting plate fixed by a locking nut on the adjusting rotating shaft. All the adjusting plates on the left and right rotary arms are uniformly connected by one adjusting connecting rod. The adjusting connecting rod is tightened or loosened through a flower basket adjusting bolt assembly, so as to push the adjusting plate to drive the adjusting rotating shaft to rotate, thereby realizing the change of the scraper angle, and achieving the beneficial effect of a scraper adjusting device for a sludge thickener that is suitable for use in working conditions with different concentrations and has high practical value.

[0004] However, for the above-mentioned scraper adjusting device of the sludge thickener, although the main shaft rotates to drive the rotary arm to rotate, and then drives the scraper to rotate through the adjusting rotating shaft to clean the sludge, there are still the following obvious defects in the use process: only a sludge scraper is arranged at the bottom inside the cylinder body of the above device, and there is no scraping and cleaning structure for the inside of the sludge discharging cone hopper on the rotating shaft, which is likely to cause the problem that the conical discharging hopper is blocked and cannot be discharged during the sludge discharging and cleaning, and further affects the progress of sludge discharging and sludge thickening treatment. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a sludge thickener to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: a sludge thickener, including:

[0007] A cylinder body, at the top of the cylinder body, a driving reduction motor is installed through a walkway plate. At the bottom of the driving reduction motor, a thickening and scraping mud main shaft vertically arranged at the center of the cylinder body is connected by transmission. The thickening and scraping mud main shaft is evenly provided with thickening grid plates through a rotating arm rod. At the lower end of the thickening and scraping mud main shaft, a sludge scraping plate for scraping the sludge inside the cylinder body is installed through a scraping arm. At the bottom of the cylinder body, a sludge discharging hopper with a conical structure is provided. At one end of the thickening and scraping mud main shaft located inside the sludge discharging hopper, a conical hopper scraping member for stirring, scraping and cleaning the sludge is provided. At the bottom of the walkway plate, a steady flow cylinder passing through the thickening and scraping mud main shaft is provided, and a water outlet weir plate horizontally passes through the steady flow cylinder.

[0008] Preferably, on the thickening and scraping mud main shaft, there are two triangular combination fixed rotating arm members. The thickening grid plates are vertically and evenly fixed on the rotating arm members. The scraping arm is fixed at the bottom of the thickening grid plates and is connected to the sludge scraping plate, realizing double thickening and cleaning of scraping and stirring the sludge inside the cylinder body.

[0009] Preferably, the bottom end of the thickening and scraping mud main shaft is fixed inside the bottom end of the sludge discharging hopper through a bearing seat. The sludge scraping plate is rotatably arranged inside the sludge discharging hopper. On one side of the sludge discharging hopper, there is a sludge discharging pipe fitting, so that the phenomenon of accumulation and blockage will not occur during the discharging process of the sludge.

[0010] Preferably, on one side of the upper end of the cylinder body, a water inlet pipe penetrates through. One end of the water inlet pipe located inside the cylinder body extends through to the inside of the steady flow cylinder. On one side of the upper end of the cylinder body, there is a water outlet pipe fitting, which can discharge the precipitated water outwards through the water outlet pipe fitting, and the steady flow cylinder can disperse and process the incoming sludge through the incoming water.

[0011] Preferably, on both sides of the bottom end of the cylinder body, there are channel steel support leg members for supporting the cylinder body. Around the outside of the cylinder body, there is a channel steel edge-wrapping fixing ring member to realize the fixation of the cylinder body.

[0012] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: For this sludge thickener, through the concentrated scraping and sludge main shaft rotatably arranged inside the cylinder body, and the concentrated grid plate, scraping plate on the concentrated scraping and sludge main shaft, and the conical hopper scraping plate member rotatably arranged in the sludge discharging conical hopper, the driving reduction motor drives the concentrated scraping and sludge main shaft to rotate, and makes the rotating arm member and the concentrated grid plate rotate, so as to realize the concentration and stirring of the sludge. At the same time, the sludge scraping plate scrapes and cleans the sludge at the bottom of the cylinder body of the cylinder, and the main shaft of the concentrated scraping and sludge plate drives the conical hopper pipe plate member in the sludge discharging conical hopper to scrape and stir the sludge, which can keep the sedimented sludge in the sludge discharging conical hopper in an active state of concentration and stirring, facilitating the smooth discharge of the sludge from the sludge discharging pipe fitting to the outside, thus avoiding the problem of the sludge discharging pipe fitting being blocked due to the non-precipitation blockage of the sludge discharging conical hopper, and further improving the efficiency of sludge concentration and stirring treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a front view structural schematic diagram of the concentrated scraping and sludge main shaft of the present utility model;

[0015] Figure 3 is a top view structural schematic diagram of the scraping arm of the present utility model;

[0016] Figure 4 is a top view structural schematic diagram of the sludge scraping plate of the present utility model.

[0017] In the figure: 1, cylinder body; 2, walkway board; 3, concentrated scraping and sludge main shaft; 4, concentrated grid plate; 5, scraping arm; 6, sludge scraping plate; 7, sludge discharging conical hopper; 8, conical hopper scraping plate member; 9, steady flow cylinder; 10, effluent weir plate; 11, rotating arm member; 12, sludge discharging pipe fitting; 13, water inlet pipe; 14, water outlet pipe fitting; 15, channel steel support leg member; 16, channel steel edge wrapping and fixing ring member; 17, driving reduction motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-4 , the present utility model provides a technical solution: A sludge thickener, comprising:

[0020] Cylinder 1, at the top of the cylinder 1, a driving reduction motor 17 is installed through a walkway plate 2. The walkway plate 2 is horizontally arranged at the top of the cylinder 1, which is conducive to the staff observing the conditions inside the cylinder 1 and taking corresponding measures. The driving reduction motor 17 drives the rotation of the concentrated sludge scraping main shaft 3 through a combination of a lifting main shaft, a small sprocket, a cycloidal pinwheel reducer, a frame, a large sprocket, a worm and worm gear reducer, a lifting support, and a waterproof cover. The bottom of the driving reduction motor 17 is drivingly connected to the concentrated sludge scraping main shaft 3 vertically arranged at the center of the cylinder 1, driving the concentrated grid plate 4 and the sludge scraper 6 to rotate to stir and mix the incoming sludge and the mixed chemicals. The concentrated sludge scraping main shaft 3 is evenly provided with concentrated grid plates 4 through the provided swing arm rods. The concentrated grid plates 4 are located in the working area of the thickener, and its design includes a series of holes or sieves. When the sludge passes through the concentrated grid plates 4, smaller solid particles will be screened out by the holes on the grid plates, while the liquid part will flow out through the pores. This effect enables the solid substances in the sludge to be effectively separated, thereby achieving the purpose of solid-liquid separation, and has a screening effect, which can greatly reduce the amount of liquid flowing out, thereby increasing the solid content of the concentrated sludge. This effect enables the thickener to more effectively treat the sludge, reduce the liquid discharge, save the cost of subsequent treatment or disposal, and at the same time consider the possible particle sizes and shapes in the sludge, so that it can effectively prevent the blockage of the grid plates during the treatment process, which helps to maintain the normal operation of the equipment, reduce the frequency of maintenance and cleaning, and improve the reliability and stability of the equipment.

[0021] At the lower end of the concentrated sludge scraping main shaft 3, a sludge scraper 6 for scraping the sludge inside the cylinder 1 is installed through a scraping arm 5, so that no sludge precipitation phenomenon occurs at the bottom end inside the cylinder 1. The bottom of the cylinder 1 is provided with a sludge discharging hopper 7 with a conical structure, and at one end of the concentrated sludge scraping main shaft 3 located inside the sludge discharging hopper 7, a conical hopper scraping part 8 for stirring, scraping and cleaning the sludge is provided, which can stir, scrape and clean the sludge falling into the sludge discharging hopper 7 for easy discharge. At the bottom of the walkway plate 2, a steady flow cylinder 9 passing through the concentrated sludge scraping main shaft 3 is provided, which plays a role in dispersing and stabilizing the incoming material flow in the sludge thickener. The sludge thickener is usually used to treat sludge or waste containing a large amount of water, and its purpose is to concentrate the solid substances in the sludge by mechanical means, reduce the volume and increase the solid content for subsequent treatment or disposal. The sludge is usually a viscous mixture containing a large amount of water. If it directly enters the thickener, it may form lumps or large masses, which is not conducive to subsequent mechanical operations and thickening effects.

[0022] Through its designed structure and operation mode, the steady flow cylinder 9 can effectively disperse the feeding material, enabling it to evenly enter the working area of the thickener, and can smoothly control the flow speed and direction of the feeding material to ensure its stable entry into the processing area of the thickener. This is crucial for maintaining the stable operation of the thickener, helps improve the thickening efficiency and reduce the equipment maintenance requirements, and can reduce equipment blockages and failures caused by material caking or uneven feeding. A water outlet weir plate 10 horizontally passes through the steady flow cylinder 9. The water outlet weir plate 10 is horizontally arranged on one side of the water outlet pipe fitting 14 of the cylinder body 1, and its design is usually ramp-shaped or has grooves. During the thickening process, the solid part screened and thickened by the thickening grid plate 4 will be centrally pushed to the water outlet weir plate 10. The design of the water outlet weir plate 10 enables the solid particles to deposit and concentrate, while the relatively large liquid part can flow out smoothly, achieving the final solid-liquid separation, ensuring that the liquid part can flow out smoothly during the sludge thickening process without leakage or excessive waste due to the accumulation of solid particles. This helps improve the processing efficiency and resource utilization rate and reduces the generation of liquid waste.

[0023] Two triangular combination fixed rotating arm members 11 are provided on the thickening sludge scraping main shaft 3. The rotating arm member 11 is installed on the thickening sludge scraping main shaft 3 through a connecting flange for rotation. The thickening grid plate 4 is vertically and evenly fixed on the rotating arm member 11. The scraping arm 5 is fixed at the bottom of the thickening grid plate 4 and is connected to the sludge scraping plate 6. The bottom end of the thickening sludge scraping main shaft 3 is fixed inside the bottom end of the sludge discharging hopper 7 through a bearing seat, and the sludge scraping plate 6 is rotatably arranged inside the sludge discharging hopper 7. One side of the sludge discharging hopper 7 is provided with a sludge discharging pipe fitting 12. One end of the water inlet pipe 13 penetrates through the upper end side of the cylinder body 1 and extends into the steady flow cylinder 9 inside the cylinder body 1. One side of the upper end of the cylinder body 1 is provided with a water outlet pipe fitting 14. Two sides of the bottom end of the cylinder body 1 are provided with channel steel support leg members 15 for supporting the cylinder body 1. A channel steel edge wrapping fixing ring member 16 is provided around the outside of the cylinder body 1.

[0024] Specifically, during use, initially, the preliminary sludge usually contains a large amount of moisture and solid particles. Before entering the thickener, it is usually filtered or large solid substances are removed to ensure uniform feeding and reduce the load on the equipment. Then, the drive reduction motor 17 drives the thickening sludge scraping main shaft 3 to rotate, and the thickening grid plate 4, the sludge scraper 6, and the cone bucket scraper member 8 are rotated. The water inlet pipe 13 conveys water into the steady flow cylinder 9, and the pretreated sludge is also conveyed into the steady flow cylinder 9. The steady flow cylinder 9 is used to stir and disperse the sludge and stabilize the flow of the feeding material, which helps to avoid the formation of lumps or unevenness when the sludge enters the thickening area. At the same time, the dispersed sludge flows downward and is thickened and stirred by the thickening grid plate 4. The holes and sieves on the thickening grid plate 4 select smaller particulate matters, and the liquid part flows out through the pores, thus realizing the preliminary solid-liquid separation of the sludge, making the thickened sludge contain higher solid substances and lower liquid content. After the sludge passes through the thickening grid plate 4, the rotating sludge scraper 6 is used to stir the sludge to ensure the uniform distribution of the solid and liquid parts and push the sludge into the sludge discharging cone bucket 7 at the bottom of the cylinder body 1. The thickening sludge scraping main shaft 3 drives the cone bucket scraper member 8 to scrape and clean the sludge and play a role in feeding, which can make the sludge smoothly discharged from the sludge discharging pipe fitting 12 and reduce the situation where the sludge accumulates and precipitates, causing blockage and preventing the sludge from being discharged. When the sludge reaches the outlet weir plate 10. The design of the outlet weir plate 10 enables the solid particles to deposit and concentrate, while most of the liquid flows out smoothly. This step completes the final solid-liquid separation, obtaining concentrated materials with higher solids and liquid waste. Finally, the liquid is discharged from the water outlet pipe fitting 14.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sludge thickener, characterized in that: include: A cylinder (1), the top of the cylinder (1) is provided with a driving reduction motor (17) through a walkway plate (2), the bottom of the driving reduction motor (17) is transmission-connected with a thickening and scraping sludge main shaft (3) vertically arranged at the center of the cylinder (1), the thickening and scraping sludge main shaft (3) is evenly provided with thickening grid plates (4) through a rotating arm rod, and a sludge scraper (6) for scraping sludge inside the cylinder (1) is installed at the lower end of the thickening and scraping sludge main shaft (3) through a scraping arm (5), a sludge discharge cone bucket (7) of a conical structure is provided at the bottom of the cylinder (1), and a cone bucket scraper member (8) for stirring, scraping and cleaning sludge is provided at one end of the thickening and scraping sludge main shaft (3) located inside the sludge discharge cone bucket (7), and a stabilizing tube (9) passing through the thickening and scraping sludge main shaft (3) is provided at the bottom of the walkway plate (2), and a water outlet weir plate (10) is horizontally passed through the stabilizing tube (9).

2. A sludge thickener according to claim 1, characterized in that: The thickening and scraping sludge main shaft (3) is provided with a rotating arm member (11) fixed in two triangular combinations, the thickening grid plate (4) is vertically and evenly fixed on the rotating arm member (11), and the scraping arm (5) is fixed at the bottom of the thickening grid plate (4) and connected to the sludge scraper (6).

3. A sludge thickener according to claim 1, characterized in that: The bottom end of the concentrated sludge scraper main shaft (3) is fixed to the inner bottom end of the sludge discharge cone bucket (7) through a bearing seat, and the sludge scraper (6) is rotatably arranged inside the sludge discharge cone bucket (7), and a sludge discharge pipe (12) is provided on one side of the sludge discharge cone bucket (7).

4. A sludge thickener according to claim 1, characterized in that: A water inlet pipe (13) is provided on one side of the upper end of the cylinder (1), one end of the water inlet pipe (13) located inside the cylinder (1) extends through the interior of the flow stabilizing cylinder (9), and a water outlet pipe (14) is provided on one side of the upper end of the cylinder (1).

5. A sludge thickener according to claim 1, characterized in that: Channel steel leg members (15) for supporting the cylinder (1) are provided on both sides of the bottom end of the cylinder (1), and a channel steel edging fixing ring member (16) is provided around the outside of the cylinder (1).

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