CN216404161U

CN216404161U - Pretreatment device for sludge dewatering

Info

Publication number: CN216404161U
Application number: CN202122688245.6U
Authority: CN
Inventors: 郭珂秀; 张俊蛟; 曹冬辉; 赵路; 闵虹菲; 薛晓冬; 黄伟; 宋恩来
Original assignee: Zhengzhou Public Environmental Technology Co ltd
Current assignee: Zhengzhou Public Environmental Technology Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-29
Anticipated expiration: 2031-11-05

Abstract

The utility model provides a pretreatment device for sludge dewatering, which comprises an outer cylinder and an inner cylinder arranged in the outer cylinder and provided with two open ends, wherein a water collecting area is arranged between the outer cylinder and the inner cylinder, and the bottom of the water collecting area is provided with a water outlet; the outer side of the bottom of the outer cylinder is provided with an annular pipe, a plurality of connectors extending to the inner cylinder are arranged on the annular pipe along the circumferential direction, the annular pipe is externally connected with a sludge pipeline used for discharging sludge, one end of the sludge pipeline is provided with a sludge inlet, and the side wall of the sludge pipeline close to the sludge inlet is provided with a dosing port; the lateral wall of interior barrel is equipped with the polylith filter cloth along circumference, and the upper portion of interior barrel is equipped with the play mud passageway that extends to the external world, and the inside rotation of interior barrel is equipped with the bull stick, and the lower part of bull stick is equipped with helical blade, and the upper portion of bull stick is equipped with the impeller, and the bull stick passes through overload protection structure drive its rotation including by the driving motor at barrel top including setting. The utility model can efficiently dehydrate the sludge to be dehydrated, and has simple and compact structural design and high working efficiency.

Description

Pretreatment device for sludge dewatering

Technical Field

The utility model belongs to the technical field of sludge treatment equipment, and particularly relates to a pretreatment device for sludge dewatering.

Background

With the development of economy and the continuous expansion of population scale, people are increasingly renewing the control of water pollution and perfecting laws and regulations, and the sludge produced by sewage treatment is continuously increased. At present, activated sludge is the most widely applied biological treatment method for sewage and wastewater, but the greatest defect of the method for treating sewage by activated sludge is that a system needs to continuously discharge a large amount of sludge outwards, the components of the sludge are complex, the sludge is composed of various microbial populations and organic matters and inorganic matters adsorbed on zoogloea, the sludge contains a great amount of water, and organic matters which are difficult to biodegrade, heavy metals, other salts, a small amount of pathogenic parasite eggs, microorganisms and the like exist. If the treatment is improper, secondary pollution can be caused, and the environment is seriously threatened.

When the sludge is pretreated in the sludge treatment system in the prior art, one or more combinations of chemical conditioning, mechanical filter pressing dehydration, ultrasonic membrane breaking, ozone, chemical oxidation and lysis method and the like are generally adopted, but because the occupied area of each device is large, a plurality of devices are required to be connected in series for achieving a good treatment effect, so that the occupied area of the whole device is larger, and the treatment effect is not ideal if the devices connected in series are fewer. Therefore, the utility model provides a pretreatment device for sludge dewatering, which can solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pretreatment device for sludge dewatering aiming at the defects of the prior art, and the specific scheme is as follows:

a pretreatment device for sludge dewatering comprises an outer cylinder and an inner cylinder arranged in the outer cylinder and having two open ends, wherein a water collecting area is arranged between the outer cylinder and the inner cylinder, and the bottom of the water collecting area is provided with a water outlet; the bottom outer side of the outer cylinder is provided with an annular pipe, a plurality of connectors extending to the inner cylinder are arranged on the annular pipe along the circumferential direction, the annular pipe is externally connected with a sludge pipeline used for discharging sludge, one end of the sludge pipeline is provided with a sludge inlet, and the side wall of the sludge pipeline close to the sludge inlet is provided with a dosing port; the side wall of the inner cylinder body is circumferentially provided with a plurality of filter cloths, the upper part of the inner cylinder body is provided with a mud outlet channel extending to the outside, a rotating rod is rotatably arranged in the inner cylinder body, the lower part of the rotating rod is provided with a helical blade, the upper part of the rotating rod is provided with an impeller, and the rotating rod is driven to rotate by a driving motor arranged at the top of the inner cylinder body through an overload protection structure; the overload protection structure comprises a top plate fixedly connected with the power output end of the driving motor and a bottom plate fixedly connected with the top end of the rotating rod, a plurality of thread through holes corresponding to each other are formed between the top plate and the bottom plate, and the top plate and the bottom plate are fixedly connected through safety pins corresponding to the thread through holes.

Based on the above, the impeller includes a cylinder and a plurality of arc-shaped plates disposed around the cylinder.

Based on the above, still be equipped with branch on the bull stick, be equipped with on the branch and be used for to the brush of filter cloth clearance.

Based on the above, the bottom of the rotating rod is seated on the thrust bearing arranged at the bottom of the outer cylinder, and the thrust bearing is arranged in the sealing element.

Based on the above, the top of catchment area is equipped with the inlet port.

Compared with the prior art, the utility model has substantive characteristics and progress, and particularly has the following advantages:

1. according to the utility model, the helical blades are arranged at the lower part of the rotating rod, the impeller is arranged at the upper part of the rotating rod, the impeller comprises a cylinder body and a plurality of arc-shaped plates arranged along the circumferential direction of the cylinder body, the sludge entering the inner cylinder body is driven by the helical blades to move upwards, and the helical blades give a certain horizontal driving force to the sludge, so that part of the sludge is dewatered from the filter cloth; in addition, the special arc-shaped plate of the impeller can apply larger horizontal thrust to the sludge, most of water in the sludge is separated from the sludge and enters the water collecting area under the action of the filter cloth, the sludge formed after the sludge is dehydrated moves upwards and is finally discharged from the sludge outlet pipeline, and the structure design is simple and compact, and the sludge dehydration work has the advantage of high efficiency and continuity.

2. According to the sludge dewatering device, the annular pipe is arranged on the outer side of the bottom of the outer cylinder body, the plurality of connectors extending to the inner cylinder body are circumferentially arranged on the annular pipe, the annular pipe is externally connected with a sludge pipeline used for discharging sludge, a sludge inlet is formed in one end of the sludge pipeline, and a dosing port is formed in the side wall of the sludge pipeline close to the sludge inlet.

3. According to the utility model, the structural design of the overload protection structure can prevent the driving motor and other related equipment from being damaged due to too large resistance, so that the stable operation of primary dehydration is ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the inner cylinder in the present invention.

Fig. 3 is a plan view of the impeller of the present invention.

Fig. 4 is a schematic structural diagram of an overload protection structure in the present invention.

Fig. 5 is a schematic view of the construction of the shear pin of the present invention.

In the figure: 1. an outer cylinder; 1-1, a water collecting area; 1-2. air inlet; 1-3, water outlet; 2. an inner cylinder; 2-1, filtering cloth; 3. a drive motor; 4. a rotating rod; 5. an overload protection structure; 5-1. top plate; 5-2, a bottom plate; 5-3, a safety pin; 6. a thrust bearing; 7. a seal member; 8. a strut; 9. a brush; 10. a sludge pipeline; 11. an annular tube; 12. a helical blade; 13. an impeller; 14. a sludge outlet channel; 15. and a medicine adding port.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

Examples

As shown in fig. 1-5, the utility model provides a pretreatment device for sludge dewatering, which comprises an outer cylinder 1 and an inner cylinder 2 arranged in the outer cylinder 1 and having two open ends, wherein a water collecting area 1-1 is arranged between the outer cylinder 1 and the inner cylinder 2, and a water outlet 1-3 is arranged at the bottom of the water collecting area 1-1; the bottom outside of outer barrel 1 is equipped with annular tube 11, be equipped with a plurality ofly along circumference on the annular tube 11 and extend to the interface of interior barrel 2, annular tube 11 is external to have the sludge conduit 10 that is used for discharging mud, the one end of sludge conduit 10 is equipped with the mud entry, and the lateral wall of sludge conduit 10 is close to the mud entry is equipped with medicine mouth 15.

The side wall of the inner cylinder body 2 is circumferentially provided with a plurality of filter cloths 2-1, the upper part of the inner cylinder body 2 is provided with a mud outlet channel 14 extending to the outside, the inner part of the inner cylinder body 2 is rotatably provided with a rotating rod 4, the lower part of the rotating rod 4 is provided with a helical blade 12, the upper part of the rotating rod 4 is provided with an impeller 13, and the rotating rod 4 is driven to rotate by a driving motor 3 arranged at the top of the inner cylinder body 2 through an overload protection structure 5.

The overload protection structure 5 is used for preventing the driving motor 3 and other related devices from being damaged, and comprises a top plate 5-1 fixedly connected with the power output end of the driving motor 3 and a bottom plate 5-2 fixedly connected with the top end of the rotating rod 4, wherein a plurality of thread through holes corresponding to each other are formed between the top plate 5-1 and the bottom plate 5-2, and the top plate 5-1 and the bottom plate 5-2 are fixedly connected through safety pins 5-3 corresponding to the thread through holes.

The impeller 13 is used for squeezing and dewatering sludge in the inner cylinder 2, and comprises a cylinder and a plurality of arc-shaped plates arranged around the cylinder.

In the process of sludge dewatering, the rotating rod 4 is further provided with a support rod 8, and the support rod 8 is provided with a brush 9 for cleaning the filter cloth 2-1.

In order to ensure the stable rotation of the rotating rod 4, the bottom of the rotating rod 4 is seated on a thrust bearing 6 arranged at the bottom of the outer cylinder 1, and the thrust bearing 6 is arranged in a sealing member 7.

In order to ensure that the water in the water collecting area 1-1 can be smoothly discharged, an air inlet 1-2 is arranged at the top of the water collecting area 1-1.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. The utility model provides a sludge dewatering is with preprocessing device which characterized in that: the device comprises an outer cylinder body (1) and an inner cylinder body (2) which is arranged in the outer cylinder body (1) and has two open ends, wherein a water collecting area (1-1) is arranged between the outer cylinder body (1) and the inner cylinder body (2), and a water outlet (1-3) is formed in the bottom of the water collecting area (1-1); an annular pipe (11) is arranged on the outer side of the bottom of the outer cylinder (1), a plurality of connectors extending to the inner cylinder (2) are arranged on the annular pipe (11) along the circumferential direction, a sludge pipeline (10) used for discharging sludge is externally connected to the annular pipe (11), a sludge inlet is formed in one end of the sludge pipeline (10), and a chemical adding port (15) is formed in the side wall of the sludge pipeline (10) close to the sludge inlet; the side wall of the inner cylinder (2) is circumferentially provided with a plurality of filter cloths (2-1), the upper part of the inner cylinder (2) is provided with a mud outlet channel (14) extending to the outside, a rotating rod (4) is rotatably arranged inside the inner cylinder (2), the lower part of the rotating rod (4) is provided with a spiral blade (12), the upper part of the rotating rod (4) is provided with an impeller (13), and the rotating rod (4) is driven to rotate by a driving motor (3) arranged at the top of the inner cylinder (2) through an overload protection structure (5); the overload protection structure (5) comprises a top plate (5-1) fixedly connected with the power output end of the driving motor (3) and a bottom plate (5-2) fixedly connected with the top end of the rotating rod (4), a plurality of thread through holes corresponding to each other are formed between the top plate (5-1) and the bottom plate (5-2), and the top plate (5-1) and the bottom plate (5-2) are fixedly connected through safety pins (5-3) corresponding to the thread through holes.

2. The pretreatment device for sludge dewatering according to claim 1, characterized in that: the impeller (13) comprises a cylinder and a plurality of arc-shaped plates arranged around the cylinder.

3. The pretreatment device for sludge dewatering according to claim 1, characterized in that: the rotating rod (4) is further provided with a supporting rod (8), and the supporting rod (8) is provided with a brush (9) used for cleaning the filter cloth (2-1).

4. The pretreatment device for sludge dewatering according to claim 1, characterized in that: the bottom of the rotating rod (4) is seated on a thrust bearing (6) arranged at the bottom of the outer cylinder body (1), and the thrust bearing (6) is arranged in a sealing element (7).

5. The pretreatment device for sludge dewatering according to claim 1, characterized in that: the top of the water collecting area (1-1) is provided with an air inlet (1-2).