Sludge discharge device for sedimentation tank

Abstract

The utility model provides a sludge discharge device for a sedimentation tank, which comprises a tank body, a bridge frame, a driving mechanism, a lifting mechanism and a flow stabilizing cylinder, a rotating shaft is rotatably arranged on the bridge frame, a sleeve is movably sleeved on the rotating shaft, a rake frame is arranged on the sleeve, a sludge scraping component is arranged on the rake frame, a sludge pit and a sludge discharge pipe communicated with the sludge pit are arranged at the bottom of the tank body, and the sludge discharge pipe is communicated with the sludge pit. A mounting cylinder is arranged at the bottom of the rotating shaft, a mud pumping pipe is arranged on the mounting cylinder in a communicating mode, a plurality of branch pipes are arranged on the mud pumping pipe in a communicating mode, a mud discharging assembly communicated with the mounting cylinder is arranged at the mud pit, the rake frame and the mounting cylinder are driven by the driving mechanism to rotate, and a mud scraping assembly on the rake frame conducts rotary mud scraping work; all the branch pipes conduct sludge suction work under the action of water pressure, sludge suction work at all positions of the bottom of the pool body is achieved on the basis of sludge scraping, the sludge discharging effect is improved, the sludge scraping assembly can be driven to ascend through the lifting mechanism, resistance of sludge to the sludge scraping assembly is reduced, and therefore torque of the rotating shaft is reduced, and normal operation of rotary sludge scraping work is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a sludge discharge device for sedimentation tank. BACKGROUND

[0002] Sedimentation tank can be divided into horizontal flow type, vertical flow type and radial flow type according to water flow direction, wherein, radial flow type is that water flow in the tank radiates to all directions, and conventional sedimentation tank is in cylindrical structure, and its outer periphery is sequentially provided with water baffle, weir plate and annular pool from inside to outside, and the water body in the sedimentation tank overflows to the weir plate through the water baffle and continues to flow into the annular pool, to realize the collection of the upper clear water of sewage, and the sedimentation tank generally adopts central transmission type mud removing mechanism, a plurality of scrapers are driven to rotate at the bottom of the sedimentation tank to scrape mud, and the static pressure of pool water is utilized to discharge the sludge through the sludge discharge pipe at the center bottom of the sedimentation tank, to realize the mud removing work.

[0003] However, it is still difficult to clean the sludge at other parts of the bottom of the sedimentation tank only through the sludge discharge function of the sludge discharge pipe at the center bottom of the sedimentation tank, and the cleaning effect of the whole sludge still needs to be improved, and when the thickness of the sludge is large, the rotating resistance of the scraper is increased, the torque at the motor is greatly increased, and the service life of the whole rotating mud removing mechanism is affected. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiency in the above-mentioned technology, and provides a sludge discharge device for sedimentation tank, to solve the above-mentioned problems.

[0005] The utility model provides a sludge discharge device for sedimentation tank, including pool body and bridge frame who sets up on the pool body, its characterized in that, be provided with drive mechanism, elevating system and steady flow cylinder on the bridge frame, be provided with inlet pipe on the steady flow cylinder, be provided with rotating shaft on the bridge frame, drive mechanism with rotating shaft transmission connection and drive rotating shaft rotates, be provided with sleeve that moves on the rotating shaft, rotating shaft drives sleeve rotates, elevating system with sleeve connection and drive sleeve elevating moves, be provided with harrow frame on the sleeve, be provided with scrape mud subassembly on the harrow frame, the bottom of pool body is provided with sludge pit and sludge discharge pipe, sludge discharge pipe with sludge pit intercommunication, the bottom of rotating shaft is provided with installation cylinder, be provided with mud suction pipe with installation cylinder intercommunication on the installation cylinder, be provided with a plurality of branch pipes on mud suction pipe intercommunication, be provided with sludge discharge subassembly with installation cylinder intercommunication in sludge pit.

[0006] Preferably, the drive mechanism includes a servo motor and a speed reducer, the speed reducer is provided with an input shaft and an output shaft in transmission connection with the input shaft, the servo motor is in transmission connection with the input shaft and drives the input shaft to rotate, and the output shaft is in transmission connection with the rotating shaft and drives the rotating shaft to rotate.

[0007] Preferably, a controller and a torque sensor are arranged on the bridge, the torque sensor is used for detecting the torque at the rotating shaft, and the controller is electrically connected with the driving mechanism, the lifting mechanism and the torque sensor respectively.

[0008] Preferably, the rotating shaft is a square rod, and a square groove matched with the square rod is arranged on the sleeve.

[0009] Preferably, the sludge discharging assembly comprises a fixed cylinder and a sludge discharging pipe, the fixed cylinder is arranged at the pit, the mounting cylinder is rotatably arranged on the fixed cylinder, the mounting cylinder is communicated with the fixed cylinder, and the sludge discharging pipe is arranged at the bottom of the pool body and communicated with the mounting cylinder.

[0010] Preferably, the lifting mechanism comprises a hydraulic cylinder, a lifting frame and a rotary frame, the hydraulic cylinder is arranged on the bridge, the driving rod of the hydraulic cylinder is connected with the lifting frame and drives the lifting frame to move up and down, the rotary frame is rotatably arranged on the lifting frame, the lifting frame is used for driving the rotary frame to move up and down, and the rotary frame is connected with the rake frame.

[0011] Preferably, the sludge scraping assembly is composed of a plurality of scraper plates, and the plurality of scraper plates are arranged obliquely at the lower end of the rake frame.

[0012] Preferably, a plurality of grid bars are arranged on the rake frame in an array.

[0013] Preferably, the bottom of the pool body is in a funnel-shaped structure with a recessed middle part.

[0014] Preferably, a support frame for supporting the rake frame is arranged on the sleeve.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The driving mechanism drives the rotating shaft to rotate to drive the rake frame and the mounting cylinder to rotate, the sludge scraping assembly on the rake frame performs the rotating and scraping work and cooperates with the sludge discharging pipe to perform the sludge discharging work, under the action of water pressure, the water body at the bottom of the pool body extrudes the sludge into each branch pipe, each branch pipe on the sludge suction pipe performs the sludge suction work under the action of water pressure, the branch pipe can perform the sludge suction work at each part of the bottom of the pool body in the process of rotating along the bottom of the pool body with the mounting cylinder, and the suctioned sludge is discharged through the mounting cylinder and the sludge discharging assembly, the sludge suction work at each part of the bottom of the pool body is realized on the basis of the sludge scraping work, the sludge discharging effect is improved, the sludge scraping assembly can be lifted by the sleeve driven by the lifting mechanism, the contact area between the sludge and the sludge scraping assembly is reduced to reduce the resistance when the sludge scraping assembly rotates, thereby reducing the torque at the rotating shaft, and the normal rotating and scraping work is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0019] Figure 2 This is a top view of one embodiment of the present invention;

[0020] Figure 3 For along Figure 2 A cross-sectional view along line AA.

[0021] Figure 4 For along Figure 2 A cross-sectional view along the BB line;

[0022] Figure 5 This is a schematic diagram of the structure of the mounting cylinder and the fixing cylinder in a certain embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the rake frame and sleeve in one embodiment of the present invention.

[0024] In the diagram, 1-pool body; 11-mud pit; 12-mud discharge pipe; 2-bridge frame; 21-flow stabilizer; 22-water inlet pipe; 3-drive mechanism; 31-servo motor; 32-reducer; 4-lifting mechanism; 41-hydraulic cylinder; 42-lifting frame; 43-rotating frame; 5-shaft; 51-installation cylinder; 52-mud suction pipe; 53-branch pipe; 6-sleeve; 61-square trough; 62-support frame; 7-rake frame; 71-mud scraper assembly; 72-grind; 8-mud discharge assembly; 81-fixed cylinder; 82-sewage pipe. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0026] Example 1:

[0027] Reference Figures 1 to 6The utility model provides a kind of sludge discharge device for sedimentation tank, including pool body 1 and the bridge 2 being set on pool body 1, it is characterized in that, drive mechanism 3 is provided on bridge 2, lifting mechanism 4 and flow stabilizing cylinder 21, water inlet pipe 22 is communicated and arranged on flow stabilizing cylinder 21, rotationally arranged with shaft 5 on bridge 2, drive mechanism 3 is connected with shaft 5 and drives shaft 5 to rotate, sleeve 6 is movably set on shaft 5, sleeve 6 is rotated by shaft 5, lifting mechanism 4 is connected with sleeve 6 and drives sleeve 6 to move up and down, rake frame 7 is provided on sleeve 6, mud scraping assembly 71 is provided on rake frame 7, mud pit 11 and sludge discharge pipe 12 are provided at the bottom of pool body 1, sludge discharge pipe 12 is communicated with mud pit 11, installation cylinder 51 is provided at the bottom of shaft 5, mud suction pipe 52 is provided on installation cylinder 51 and communicated with installation cylinder 51, a plurality of branch pipes 53 are communicated and arranged on mud suction pipe 52, sludge discharge assembly 8 is provided at mud pit 11 and communicated with installation cylinder 51.

[0028] shaft 5 is rotated by drive mechanism 3 to drive rake frame 7 and installation cylinder 51 to rotate, mud scraping assembly 71 on rake frame 7 is rotated and mud is scraped, and sludge discharge pipe 12 is used for discharging mud, under the action of water pressure, the water body at the bottom of pool body 1 extrudes sludge into each branch pipe 53, each branch pipe 53 on mud suction pipe 52 is used for sucking sludge under the action of water pressure, and the sludge sucked is discharged through installation cylinder 51 and sludge discharge assembly 8, the sludge at the bottom of pool body 1 is sucked on the basis of being scraped, the effect of discharging sludge is improved, and the contact area between sludge and mud scraping assembly 71 is reduced to reduce the resistance of mud scraping assembly 71 when rotating, so that the torque at shaft 5 is reduced, and the normal operation of the rotating and scraping work is facilitated.

[0029] Specifically, drive mechanism 3 includes servo motor 31 and speed reducer 32, the input shaft and the output shaft connected with the input shaft are arranged on speed reducer 32, the servo motor 31 is connected with the input shaft and drives the input shaft to rotate, and the output shaft is connected with the shaft 5 and drives the shaft 5 to rotate. The torque at the output end of servo motor 31 is reduced by speed reducer 32, so that the servo motor 31 is more easily driven to rotate the shaft 5, and the normal operation of the rotating and scraping work is facilitated.

[0030] Specifically, the cable tray 2 is equipped with a controller and a torque sensor. The torque sensor detects the torque at the rotating shaft 5. The controller is electrically connected to the drive mechanism 3, the lifting mechanism 4, and the torque sensor. The controller can control the working state of the drive mechanism 3 throughout the entire process, and it controls the working state of the lifting mechanism 4 based on the torque sensor. When the torque sensor detects that the torque at the rotating shaft 5 is greater than the set maximum value, the controller starts the lifting mechanism 4 based on this information. The lifting mechanism 4 drives the rake frame 7 to rise, and the rake frame 7 drives the sludge scraping assembly 71 to rise to reduce the contact area between the sludge scraping assembly 71 and the sludge, thereby reducing the torque at the rotating shaft 5. The lifting mechanism 4 stops working when the torque value detected by the torque sensor falls within the set range, which facilitates the normal operation of the rotary sludge scraping. The controller is a PLC controller commonly used in this technical field, and the torque sensor is model DTNJ-1050B.

[0031] Specifically, the rotating shaft 5 is a square rod, and the sleeve 6 is provided with a square groove 61 that moves in conjunction with the square rod. By engaging the square rod with the square groove 61, the sleeve 6 can move relative to the rotating shaft 5, and the rotating shaft 5 can drive the sleeve 6 to rotate. This facilitates the coordinated operation of the drive mechanism 3 and the lifting mechanism 4, which in turn drive the sludge scraper assembly 71 to lift and rotate via the sleeve 6.

[0032] Example 2:

[0033] Reference Figures 1 to 6 In conjunction with the technical solution of Embodiment 1, in this embodiment, the sludge removal assembly 8 includes a fixed cylinder 81 and a sewage pipe 82. The fixed cylinder 81 is located at the sludge pit 11, and the mounting cylinder 51 is rotatably mounted on the fixed cylinder 81, communicating with the fixed cylinder 81. The sewage pipe 82 is located at the bottom of the pool body 1 and communicates with the mounting cylinder 51. The water level of the pool body 1 is usually higher than the height of the mounting cylinder 51, that is, the water level of the pool water is generally higher than the mounting cylinder 51, the branch pipe 53, the sludge suction pipe 52, and the sewage pipe 82. This structural design can utilize water pressure to drive the water body to squeeze the sludge to flow sequentially through the branch pipe 53, the sludge suction pipe 52, the mounting cylinder 51, the fixed cylinder 81, and the sewage pipe 82. That is, the sludge sucked in at the branch pipe 53 is discharged to the fixed cylinder 81 through the mounting cylinder 51 and discharged from the sewage pipe 82 at the bottom of the pool body 1, realizing the sludge suction work. In other embodiments, a pump body can be installed at the sewage pipe 82 to enhance the sludge suction effect at each branch pipe 53.

[0034] Specifically, the lifting mechanism 4 includes a hydraulic cylinder 41, a lifting frame 42, and a rotating frame 43. The hydraulic cylinder 41 is mounted on the bridge frame 2. The drive rod of the hydraulic cylinder 41 is connected to the lifting frame 42 and drives the lifting frame 42 to move up and down. The rotating frame 43 is rotatably mounted on the lifting frame 42. The lifting frame 42 is used to drive the rotating frame 43 to move up and down. The rotating frame 43 is connected to the rake frame 7.

[0035] The driving mechanism 3 drives the sleeve 6 to rotate through the rotating shaft 5, the sleeve 6 drives the slewing frame 43 to rotate relative to the lifting frame 42 in the rotating process, the hydraulic cylinder 41 drives the lifting frame 42 to lift to drive the slewing frame 43 in the rotating state to lift and move, and the coordinated working process of the mud scraping assembly 71 lifting and rotating is realized.

[0036] Specifically, the mud scraping assembly 71 is composed of a plurality of scrapers, and the plurality of scrapers are arranged obliquely at the lower end of the rake frame 7.

[0037] The plurality of obliquely arranged scrapers can cooperate with the rotating process of the rake frame 7 to scrape the mud around the bottom of the pool body 1 to the mud pit 11, which is beneficial to improve the mud removal effect.

[0038] Embodiment 3:

[0039] Referring to Figures 1 to 6 In combination with the technical solutions of Embodiment 1 and Embodiment 2, in the embodiment, a plurality of grid bars 72 are arranged in an array on the rake frame 7. By arranging the plurality of grid bars 72 to cooperate with the rotating process of the rake frame 7 to slow down the stirring of the pool water, the appropriate slow stirring can promote the collision and aggregation between the mud particles, increase the particles, and thus improve the settling speed.

[0040] Specifically, the bottom of the pool body 1 is in a funnel-shaped structure with a recessed middle part.

[0041] The bottom of the pool body 1 is arranged in a funnel-shaped structure with a recessed middle part, so that the mud and the water at the bottom of the pool body 1 are easily flowed to the mud pit 11 under the action of gravity, and the mud removal effect is improved.

[0042] Specifically, the sleeve 6 is provided with a support frame 62 for supporting the rake frame 7. By arranging the support frame 62 on the sleeve 6 to radially support the rake frame 7, the overall structural strength of the rake frame 7 is improved, so that the rake frame 7 is not easy to bend and deform.

[0043] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present application. Therefore, any modification, equivalent change and modification of the above embodiments within the scope of the technical solution of the present application, which is based on the technical solution of the present application, all belong to the protection scope of the present application.

Claims

1. A sludge discharge apparatus for a sedimentation tank comprising a tank body and a bridge frame provided on the tank body, characterized by, The bridge is provided with a driving mechanism, a lifting mechanism and a flow stabilizing cylinder, the flow stabilizing cylinder is provided with a water inlet pipe in communication, the bridge is rotatably provided with a rotating shaft, the driving mechanism is in transmission connection with the rotating shaft and drives the rotating shaft to rotate, a sleeve is movably arranged on the rotating shaft, the rotating shaft drives the sleeve to rotate, the lifting mechanism is connected with the sleeve and drives the sleeve to move up and down, the sleeve is provided with a rake frame, the rake frame is provided with a mud scraping assembly, the pool body is provided with a mud pit and a mud discharge pipe at the bottom, the mud discharge pipe is in communication with the mud pit, the rotating shaft is provided with a mounting cylinder at the bottom, the mounting cylinder is provided with a mud suction pipe in communication with the mounting cylinder, a plurality of branch pipes are provided on the mud suction pipe in communication, the mud pit is provided with a mud discharge assembly in communication with the mounting cylinder.

2. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The driving mechanism comprises a servo motor and a speed reducer, the speed reducer is provided with an input shaft and an output shaft in transmission connection with the input shaft, the servo motor is in transmission connection with the input shaft and drives the input shaft to rotate, the output shaft is in transmission connection with the rotating shaft and drives the rotating shaft to rotate.

3. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The bridge is provided with a controller and a torque sensor, the torque sensor is used for detecting the torque at the rotating shaft, and the controller is electrically connected with the driving mechanism, the lifting mechanism and the torque sensor respectively.

4. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The rotating shaft is a square rod, and the sleeve is provided with a square groove movably matched with the square rod.

5. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The mud discharge assembly comprises a fixed cylinder and a sewage pipe, the fixed cylinder is arranged at the mud pit, the mounting cylinder is rotatably arranged on the fixed cylinder, the mounting cylinder is in communication with the fixed cylinder, and the sewage pipe is arranged at the bottom of the pool body and in communication with the mounting cylinder.

6. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The lifting mechanism comprises a hydraulic cylinder, a lifting frame and a rotary frame, the hydraulic cylinder is arranged on the bridge, the driving rod of the hydraulic cylinder is connected with the lifting frame and drives the lifting frame to move up and down, the rotary frame is rotatably arranged on the lifting frame, the lifting frame is used for driving the rotary frame to move up and down, and the rotary frame is connected with the rake frame.

7. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The mud scraping assembly is composed of a plurality of scraper plates, and a plurality of the scraper plates are arranged at the lower end of the rake frame in an inclined manner.

8. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: A plurality of grid bars are arranged on the rake frame in an array.

9. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The bottom of the pool body is in the shape of a funnel with a recessed middle part.

10. The mud discharge device for the sedimentation tank according to claim 1, characterized in that: The sleeve is provided with a support frame for supporting the harrow frame. The sleeve is provided with a support frame for supporting the harrow frame.

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