Mud-water separator for sewage treatment

Abstract

The utility model belongs to the technical field of sewage treatment, and relates to a mud-water separator for sewage treatment, which comprises a separating device, a casing, a base, a main motor and an auxiliary motor, the separating device is mounted in the casing, the casing is fixed on the base, and the main motor and the auxiliary motor are respectively positioned outside the casing and outside the other end of the casing. The main motor drives the differential mechanism through a belt and then is connected with the feeding pipe, the auxiliary motor drives the rotary drum through the differential mechanism, the separating device is composed of the rotary drum, the feeding pipe, a spiral conveyor and a flow guide cover, the rotary drum is divided into a settling area and a drying area, the spiral conveyor is of a variable-pitch design, the pitch is decreased progressively from the settling area to the drying area, and flow guide holes are formed in spiral sheets. The spiral conveyor with the gradually-changed screw pitch is adopted, the spiral conveyor can better adapt to sewage with different concentrations, the screw pitch which is gradually reduced in the sludge discharging direction can increase the pressure on sludge, water in the sludge is discharged as much as possible, liquid in the sludge can flow towards the liquid discharging port through the flow guide holes, and the dewatering efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and specifically relates to a mud-water separator for sewage treatment. Background Art

[0002] Metallurgical wastewater treatment is an indispensable part of environmental protection and resource recycling. Its main purpose is to remove pollutants in wastewater to reduce the impact of wastewater on the environment. Among many wastewater treatment technologies, mud-water separator plays a vital role. It is mainly used to separate sludge solid particles from wastewater.

[0003] Existing mud-water separators mostly use centrifugal dehydrators, which use physical methods and the principle of centrifugal sedimentation to separate solids and liquids, thereby improving the solid-liquid separation efficiency.

[0004] However, there are still some problems in the existing technology. Due to the complex composition of sewage, the degree of separation during solid-liquid separation is inconsistent due to changes in sewage concentration during treatment, the solid-liquid separation is not thorough, there is still a lot of water in the sludge, and the dehydration efficiency is low. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a mud-water separator for sewage treatment which can be suitable for sewage of different concentrations, discharge the water in the sludge as much as possible, and improve the dehydration efficiency.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] A mud-water separator for sewage treatment comprises a separation device, a shell, a base, a main motor and an auxiliary motor. The separation device is installed inside the shell, the shell is installed on the base, the main motor is installed outside the shell, the power output end of the main motor is connected to the differential through a belt, the differential is connected to the power input end of the feed pipe of the separation device, the auxiliary motor is installed outside the other end of the shell, and the power output end of the auxiliary motor is connected to the power input end of the drum of the separation device through the differential.

[0008] Furthermore, the separation device includes a rotating drum, a feed pipe, a screw conveyor, and a guide cover. The feed pipe is arranged in the rotating drum, the screw conveyor is installed on the feed pipe and rotates with the feed pipe, the guide cover is installed at the outlets at both ends of the rotating drum, the rotating drum is divided into a sedimentation zone and a drying zone, the sedimentation zone is cylindrical, and the drying zone is conical. The screw conveyor is a variable pitch screw, and the pitch of the screw conveyor gradually decreases from the sedimentation zone to the drying zone. A guide hole is opened on the screw sheet near the center feed pipe.

[0009] Furthermore, the shell includes an upper shell and a lower shell, and the upper shell and the lower shell are hinged by hinges.

[0010] According to the above technical solution, the beneficial effects of the present utility model are as follows: The present utility model adopts a spiral conveyor with a gradually changing pitch, which can better adapt to sewage under different concentrations. The pitch that gradually decreases in the direction of sludge discharge can increase the pressure on the sludge, further discharging the moisture therein. The opening of the diversion holes helps the liquid in the sludge to flow towards the liquid discharge port, improving the dehydration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the sludge-water separation device;

[0012] Figure 2 It is a front view of the partial structure of the sludge-water separation device;

[0013] 1 - separation device, 11 - drum, 111 - sedimentation area, 112 - drying area, 12 - feed pipe, 13 - spiral conveyor, 14 - diversion hood, 2 - housing, 3 - base, 4 - main motor, 41 - differential, 5 - auxiliary motor, 51 - differential. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to more clearly illustrate the technical solutions implemented by the present utility model, the present utility model will be described in detail below with reference to the drawings and embodiments.

[0015] A sludge-water separator for sewage treatment includes a separation device 1, a housing 2, a base 3, a main motor 4, and an auxiliary motor 5. The separation device 1 is installed inside the housing 2, the housing 2 is installed on the base 3, the main motor 4 is installed outside the housing 2, the power output end of the main motor 4 is connected to the differential 41 through a belt, and the differential 41 is connected to the power input end of the feed pipe 12 of the separation device 1. The auxiliary motor 5 is installed on the outer side of the other end of the housing 2, and the power output end of the auxiliary motor 5 is connected to the power input end of the drum 11 of the separation device 1 through a differential 51. There is a speed difference when the feed pipe 12 rotates and the drum 11 rotates, and the sludge particles are pushed towards the solid discharge port by using the speed difference.

[0016] Furthermore, the separation device 1 includes a drum 11, a feed pipe 12, a spiral conveyor 13, and a diversion hood 14. The feed pipe 12 is arranged inside the drum 11, the spiral conveyor 13 is installed on the feed pipe 12 and rotates with the feed pipe 12, and the diversion hood 14 is installed at the two ends of the drum 11. After the sewage enters the drum 11, the solid particles are affected by the centrifugal force and adsorbed on the inner wall of the drum 11, and then are pushed towards the solid discharge port by the spiral conveyor 13, while the liquid flows towards the reverse liquid discharge port, realizing solid-liquid separation.

[0017] Furthermore, the drum 11 is divided into a sedimentation area 111 and a drying area 112. The sedimentation area 111 is partially cylindrical, and the drying area 112 is conical. When the sewage added with flocculant enters the sedimentation area 111, the sludge in the sewage precipitates and is separated from the liquid phase due to the centrifugal force. When it is pushed by the screw conveyor 13 towards the drying area, the pressure on the sludge increases as the conical drum 11 gradually converges, squeezing and separating the water in the sludge.

[0018] Furthermore, the screw conveyor 13 is a variable pitch screw. The pitch of the screw conveyor 13 gradually decreases from the sedimentation area 111 to the drying area 112. The guide holes are provided on the screw blades near the central feed pipe 12. The variable pitch screw conveyor can better adapt to sewage under different concentrations and improve the dehydration efficiency. The gradually decreasing pitch along the sludge discharge direction can increase the pressure on the sludge and further discharge the water therein. The provision of the guide holes helps the liquid in the sludge to flow towards the liquid discharge port, enhancing the dehydration efficiency.

[0019] Furthermore, the housing 2 includes an upper housing 21 and a lower housing 22. The upper housing 21 and the lower housing 22 are hinged by a hinge, and the upper housing 21 can be opened during maintenance.

[0020] According to the above embodiments, the working process of the present utility model is as follows: Start the main motor 4 and the auxiliary motor 5 to make the drum 11 and the screw conveyor 13 rotate in the same direction at different speeds. Feed the sewage mixed evenly with the flocculant into the feed pipe 12. After the sewage enters the drum 11, due to the principle of centrifugal sedimentation, the solid sludge particles are adsorbed on the inner wall of the drum 11. Due to the rotational speed difference between the screw conveyor 13 and the drum 11, the solid sludge particles are pushed by the screw conveyor 13 towards the drying end of the drum 11 and finally discharged from the solid discharge port. The water flows from the guide holes on the screw blades towards the sedimentation area and flows out from the liquid discharge port, realizing the separation of mud and water.

[0021] The embodiments of the present utility model disclosed above are only applicable to help illustrate the present utility model. The preferred embodiments do not elaborate all the details and do not limit the present utility model to the specific embodiments described. According to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A mud-water separator for sewage treatment, characterized in that: The invention comprises a separation device (1), a housing (2), a base (3), a main motor (4), and an auxiliary motor (5), wherein the separation device (1) is mounted inside the housing (2), the housing (2) is mounted on the base (3), the main motor (4) is mounted outside the housing (2), the power output end of the main motor (4) is connected to a differential (41) via a belt, the differential (41) is connected to a power input end of a feed pipe (12) of the separation device (1), the auxiliary motor (5) is mounted outside the other end of the housing, and the power output end of the auxiliary motor (5) is connected to a power input end of a rotating drum (11) of the separation device (1) via a differential (51).

2. The mud-water separator according to claim 1, characterized in that: The separation device (1) comprises a rotating drum (11), a feed pipe (12), a screw conveyor (13), and a flow guide cover (14); the feed pipe (12) is arranged in the rotating drum (11); the screw conveyor (13) is installed on the feed pipe (12) and rotates with the feed pipe (12); and the flow guide cover (14) is installed at outlets at both ends of the rotating drum.

3. The separator according to claim 2, characterized in that: The rotary drum (11) is divided into a sedimentation zone (111) and a drying zone (112); the sedimentation zone (111) is cylindrical, and the drying zone (112) is conical.

4. The separator according to claim 2, characterized in that: The screw conveyor (13) is a variable pitch screw, the pitch of which gradually decreases from the settling zone (111) to the drying zone (112), and a guide hole is provided on the screw blade near the central feed pipe (12).

5. The mud-water separator according to claim 1, characterized in that: The housing (2) comprises an upper housing (21) and a lower housing (22), and the upper housing (21) and the lower housing (22) are hingedly connected via hinges.

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