Dredging device of horizontal centrifugal dehydrator

Abstract

The utility model discloses a dredging device of a horizontal centrifugal dehydrator in the field of sewage treatment, the dredging device comprises a rotary drum and a dredging mechanism, a plurality of water outlets and sludge outlets are respectively formed in two opposite sides of the rotary drum, one side of each sludge outlet is provided with the dredging mechanism used for dredging sludge blocked at the sludge outlet, and the other side of each sludge outlet is provided with the dredging mechanism used for dredging sludge blocked at the sludge outlet. The dredging mechanism is annularly arranged on the outer side of the rotary drum and is in sliding connection with the rotary drum. Sludge dehydrated by the centrifugal dehydrator still has certain humidity and viscosity, although the sludge can be thrown to the outside along with high-speed rotation, a small amount of sludge can still be adhered to the sludge outlet, and when the adhered sludge affects the efficiency of the centrifugal dehydrator, the dredging mechanism can be started to clean the sludge at the sludge outlet, so that the efficiency of the centrifugal dehydrator is improved.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, in particular to a dredging device for a horizontal centrifugal dehydrator. Background Art

[0002] Sludge dewatering in water plants typically involves using a horizontal centrifugal dewatering machine. These machines primarily consist of a rotating drum and a hollow discharge screw. Sludge is fed into the drum via a hollow shaft. The centrifugal force generated by the high-speed rotation causes the solid-liquid mixture within the centrifuge to spin at high speed, generating high centrifugal forces that form a liquid ring. This centrifugal force accelerates the sedimentation and separation of the solid-liquid mixture. Heavier solid particles settle on the outer ring of the liquid ring, forming a mud ring along the inner wall of the drum. Water, with its lower density and resulting lower centrifugal force, only forms a liquid layer within the mud ring. The drum and discharge screw rotate in the same direction, but at a speed difference. The discharge screw conveys the separated dry mud to the conical end of the drum, where it is discharged through the mud outlet. The filtrate collects at the lower end of the drum and is discharged through the water outlet.

[0003] The existing patent with publication number "CN 213537673 U" discloses "a sludge dewatering machine for sewage treatment projects". The device includes a base plate and a sludge dewatering machine body. The base plate is fixedly connected to the sludge dewatering machine body by a welding fixed mounting block. The sludge dewatering machine body includes a centrifugal cylinder, and the bottom of the centrifugal cylinder is provided with a mud discharge plate and a water outlet pipe. A first square mud inlet pipe is fixedly connected to the upper side of the mud inlet on the right side of the centrifugal cylinder of the sludge dewatering machine body. Semicircular openings are opened on the left and right side walls of the first square mud inlet pipe. A second square mud inlet pipe is fixedly welded to the upper side of the first square mud inlet pipe. The utility model relates to the technical field of sewage treatment projects. The sludge dewatering machine utilizes the first square mud inlet pipe, the second square mud inlet pipe, a faucet, a mud stirring shaft, etc. to crush the sludge through the mud stirring shaft and flow it into the sludge dewatering machine body, effectively preventing the sludge from clogging the mud inlet hole, ensuring the normal operation of the sludge dewatering machine body, and avoiding unnecessary economic losses for the enterprise. This device crushes the sludge before the sewage enters the centrifuge to prevent the sludge from clogging the mud inlet hole. However, after the sludge is dehydrated by the dehydrator, the sludge still has a certain humidity and is in a viscous state. Although the sludge can be thrown to the outside under the rotation of the dehydrator, over time, the viscous sludge will gradually clog the mud outlet, causing the sludge to accumulate inside the dehydrator, thereby affecting the dehydration efficiency of the dehydrator. Utility Model Content

[0004] The utility model aims to provide a dredging device for a horizontal centrifugal dehydrator, so as to solve the problem that the dehydration efficiency of the dehydrator is reduced due to silt blocking the mud outlet.

[0005] A dredging device for a horizontal centrifugal dehydrator in this scheme includes a rotating drum and a dredging mechanism. A plurality of water outlets and mud outlets are respectively provided on opposite sides of the rotating drum. A dredging mechanism is provided on one side of the mud outlet for dredging sludge blocked at the mud outlet. The dredging mechanism is arranged around the outer side of the rotating drum and is slidably connected to it.

[0006] The working principle and beneficial effects of this solution are as follows: when in use, the drum rotates at a high speed, and the sludge and clean water separated inside are thrown out to the outside from the mud outlet and the water outlet respectively. Although the sludge after dehydration can be thrown out by centrifugal force under high-speed rotation, the sludge is still in a water-containing and viscous state at this time, and some sludge is easy to remain at the mud outlet, which will block the mud outlet for a long time, making it difficult for the sludge to be thrown out from the inside of the drum, affecting the efficiency of the centrifugal dewatering machine. When the sludge blocks the mud outlet, the dredging device can be opened and moved to the mud outlet to dredge the sludge in the mud outlet, so that the sludge stuck at the mud outlet is separated from the mud outlet, thereby enlarging the diameter of the mud outlet, making the sludge easier to be thrown out by centrifugal force, and improving the efficiency of the centrifugal dewatering machine. The device can dredge the sludge sticking to the mud outlet, increase the diameter of the blocked mud outlet, and improve the efficiency of the centrifugal dewatering machine.

[0007] Furthermore, the dredging mechanism is provided with a dredging ring, which is arranged on the outer side of the drum and is slidably connected to the drum. The inner side of the dredging ring connected to the drum is provided with multiple grooves, and multiple dredging blocks are provided in each of the multiple grooves. The dredging block is fixedly connected to a spring on the side away from the drum, and the other end of the spring is fixedly connected to the inner wall of the groove of the dredging ring. When the dredging ring is not working, the dredging block rotates into the groove to compress the spring. When in use, the groove of the dredging ring is pushed to the top of the mud outlet. At this time, the compressed spring releases the pressure, pushing the dredging block along the mud outlet, pushing the silt blocked at the mud outlet into the drum, and then pushing the dredging ring back to the distance. The dredging block is re-sealed in the groove to compress the spring. At this time, when the drum rotates, the internal silt can be thrown out of the centrifugal dehydrator again, thereby improving the mud discharge efficiency of the centrifugal dehydrator.

[0008] Furthermore, a fixed ring is provided on the side of the dredging mechanism away from the mud outlet. The fixed ring is fixedly connected to the rotating drum. Multiple electric push rods are fixedly connected to the side of the fixed ring away from the dredging mechanism. Each of the multiple electric push rods passes through the fixed ring and is fixedly connected to the side wall of the dredging mechanism. The fixed ring facilitates the installation of the electric push rods and the positioning of the dredging ring. The combination of the fixed ring and the electric push rods allows the dredging ring to rotate in unison with the rotating drum, thereby ensuring that the groove of the dredging block is always aligned with the mud outlet.

[0009] Furthermore, the side wall of the dredging ring near the mud outlet is inclined downward from the outside along the mud outlet to form a slope. When the slope of the dredging ring moves to the mud outlet, it can scrape away the silt at the mud outlet and the outside of the drum to prevent the silt from adhering to the outside of the drum.

[0010] Furthermore, the end of the dredge block away from the mud outlet is rotatably connected to the side wall of the groove. When the dredge ring is pushed above the mud outlet, the spring drives the dredge block outward, and the dredge block can then rotate along the rotation center, preventing the dredge block from falling into the mud outlet under the action of the spring. When the dredge ring is retracted, it can be retracted into the groove under the obstruction of the drum side wall.

[0011] Furthermore, frames are provided on both the front and rear sides of the drum, the drum is rotatably connected to the frames, a motor for driving the drum to rotate is provided on the outside of the frames, and the output end of the motor passes through the frames and is fixedly connected to the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a dredging device for a horizontal centrifugal dehydrator of the utility model;

[0013] Figure 2 for Figure 1 A cross-sectional view of the middle dredging mechanism;

[0014] Figure 3 for Figure 2 Cross-sectional view of the moving state. DETAILED DESCRIPTION

[0015] The following is further described in detail through specific implementation methods:

[0016] The reference numerals in the drawings of the specification include: motor 1, frame 2, dredging mechanism 3, electric push rod 31, fixing ring 32, dredging ring 33, spring 34, dredging block 35, mud outlet 4, drum 5, water outlet 6.

[0017] The embodiment is basically as shown in the attached Figures 1 to 3 As shown: A dredging device for a horizontal centrifugal dehydrator, comprising a rotary drum 5, a dredging mechanism 3, four mud outlets 4 and four water outlets 6. A frame 2 is provided on both sides of the rotary drum 5. The rotary drum 5 is rotatably connected to the frame 2. A motor 1 is provided on the side of the frame 2 away from the rotary drum 5. The output shaft of the motor 1 passes through the frame 2 and is fixedly connected to the rotary drum 5. The four mud outlets 4 are all located on the side wall of the rotary drum 5 near one end of the motor 1, and the four mud outlets 4 pass through the side wall of the rotary drum 5. The four water outlets 6 are located on the side wall of the rotary drum 5 at one end opposite to the mud outlet 4, and the four water outlets 6 pass through the side wall of the rotary drum 5.

[0018] The dredging mechanism 3 includes a fixed ring 32 and a dredging ring 33 which are arranged in sequence from left to right. Both the fixed ring 32 and the dredging ring 33 surround the outer side of the drum 5 and are located between the mud outlet 4 and the left side frame 2. The fixed ring 32 is fixedly connected to the side wall of the drum 5. Four electric push rods 31 are fixedly connected to the side of the fixed ring 32 away from the dredging ring 33. The telescopic end of the electric push rod 31 passes through the fixed ring 32 and is fixedly connected to the side wall of the dredging ring 33. The side wall of the dredging ring 33 away from the fixed ring 32 is tilted outward from the outside along the mud outlet 4. Four grooves are provided at the position where the dredging ring 33 contacts the drum 5. Triangular dredging blocks 35 are rotatably connected in the four grooves. A spring 34 is provided between the dredging block 35 and the dredging ring 33. One end of the spring 34 is fixedly connected to the dredging block 35, and the other end of the spring 34 is fixedly connected to the side wall of the groove.

[0019] The specific implementation process is as follows: when in use, the motor 1 drives the drum 5 to rotate, and the sewage inside the drum 5 is separated into sludge and clean water under high-speed rotation, and then thrown out from the mud outlet 4 and the water outlet 6 respectively. The thrown out sludge still has a certain viscosity and humidity, and is easy to stick to the mud outlet 4, causing the sludge to clog the inside of the drum 5, affecting the dehydration efficiency of the centrifugal dehydrator. At this time, the electric push rod 31 can be turned on, and the electric push rod 31 pushes the dredging ring 33 to slide toward the mud outlet 4. The inclined side wall of the dredging ring 33 can scrape off the sludge outside the mud outlet 4. When the dredging is completed, the dredging ring 33 is turned on. When the ring 33 moves to above the mud outlet 4, the spring 34 compressed at the top of the dredging block 35 can push the dredging block 35 into the mud outlet 4, thereby pushing the sticky silt inside the mud outlet 4 into the inside of the drum 5, separating it from the mud outlet 4, and then starting the electric push rod 31 to retract. At this time, the dredging block 35 is blocked by the side wall of the drum 5 and rotates into the groove, compressing the spring 34, and then retracting into the groove, thereby completing the dredging at the mud outlet 4. When the drum 5 rotates again, the internal silt can be thrown to the outside, thereby improving the efficiency of the centrifugal dehydrator.

[0020] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A dredging device for a horizontal centrifugal dehydrator, comprising a rotary drum, wherein two opposite sides of the rotary drum are respectively provided with a plurality of water outlets and mud outlets, wherein: A dredging mechanism is provided, and a dredging mechanism for dredging sludge blocked at the mud outlet is provided on one side of the mud outlet, and the dredging mechanism is arranged on the outer side of the drum and is slidably connected thereto; the dredging mechanism is provided with a dredging ring, and the dredging ring is arranged on the outer side of the drum and is slidably connected thereto, and a plurality of grooves are provided on the inner side of the dredging ring connected to the drum, and a plurality of dredging blocks are provided in each of the plurality of grooves, and a spring is fixedly connected to the side of the dredging block away from the drum, and the other end of the spring is fixedly connected to the inner wall of the groove of the dredging ring; a fixing ring is provided on the side of the dredging mechanism away from the mud outlet The fixing ring is fixedly connected to the drum, and a plurality of electric push rods are fixedly connected to the side of the fixing ring away from the dredging mechanism, and the plurality of electric push rods all pass through the fixing ring and are fixedly connected to the side wall of the dredging mechanism; the side wall of the dredging ring close to the mud outlet is inclined downward along the mud outlet from the outside to form a slope; the end of the dredging block away from the mud outlet is rotatably connected to the side wall of the groove; frames are provided on the front and rear sides of the drum, and the drum is rotatably connected to the frame, and a motor for driving the drum to rotate is provided on the outside of the frame, and the output end of the motor passes through the frame and is fixedly connected to the drum.

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