Sewage pool mud scraping module

Abstract

The utility model aims to provide a sewage pool mud scraping module which comprises a sewage pool, a first guide rail, a second guide rail, a third guide rail and a fourth guide rail are arranged on the front side and the rear side of the top end and the bottom end in the sewage pool respectively, and the guide rails are parallel to one another. A driving shaft, a first driven shaft, a second driven shaft and a third driven shaft are sequentially arranged at the four corners of the rear end in the sewage pool in the circumferential direction, and the driving shaft is located on the upper left side; one end of the driving shaft is in transmission connection with a driving module, the axis direction of each moving shaft is the front-back direction, the front end of each moving shaft is fixedly connected with the inner wall of the sewage pool through a bearing, and a first chain and a second chain arranged in the sewage pool are used for enabling the moving shafts to be in transmission connection; a plurality of mud scraping plates are fixedly installed on the centrifugal side of the first chain in the circumferential direction at equal intervals, and the front ends of the mud scraping plates are fixedly connected with the centrifugal side of the second chain. Induction plates sleeve two ends of the mud scraping plate; and induction switches corresponding to the induction plates are arranged on the front side and the rear side of the inner top of the sewage pool.

Description

A sludge scraping module for sewage tanks Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sludge scraping module for wastewater tanks. Background Technology

[0002] The sludge scraping module for sewage tanks is a machine that removes sludge from waterways. It is used in large-diameter circular sedimentation tanks in urban sewage treatment plants, waterworks, and industrial wastewater treatment plants to remove sludge settled at the bottom of the tank and skim off scum from the surface.

[0003] Currently, a sludge scraping module for sewage tanks requires an additional sensing system to operate normally. When the scraper blades are tilted, the drive module is prone to damage due to the lack of a sensing system. Summary of the Invention

[0004] The purpose of this invention is to provide a sludge scraping module for sewage tanks to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A sludge scraping module for a sewage tank includes a sewage tank. The top and rear sides of the sewage tank are respectively provided with a first guide rail and a second guide rail. The bottom and rear sides of the sewage tank are respectively provided with a third guide rail and a fourth guide rail. The first guide rail, the second guide rail, the third guide rail, and the fourth guide rail are parallel to each other. The four corners of the rear end of the sewage tank are circumferentially provided with a drive shaft, a first driven shaft, a second driven shaft, and a third driven shaft, with the drive shaft located on the upper left side.

[0007] One end of the drive shaft is connected to a drive module. The axes of the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft are all in the front-back direction. The front ends of the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft are all fixedly connected to the inner wall of the sewage tank through bearings. Ratchets are fitted at both ends of the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft. The sewage tank is equipped with a first chain and a second chain. The first chain passes through the sprockets at the rear ends of the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft in sequence. The second chain passes through the sprockets at the front ends of the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft in sequence. Both the first chain and the second chain are used to drive the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft.

[0008] Multiple scraper blades are fixedly installed at equal intervals around the centrifugal side of the first chain, and the front end of the scraper blades is fixedly connected to the centrifugal side of the second chain.

[0009] Both ends of the sludge scraper are fitted with sensor plates, and the front and rear sides of the inner top of the sewage tank are equipped with corresponding sensor switches.

[0010] By adopting the above technical solution, when the scraper blade tilts, after the scraper blade and the guide rails at both ends tilt, the induction switches located on the front and rear sides of the inner top of the sewage tank sense that the induction plates at the front and rear ends of the same scraper blade pass through the induction switch in sequence. If the time difference generated is greater than the threshold set by the system, the induction switch transmits information to the drive module, and the drive module then controls the drive shaft to stop rotating.

[0011] In a further embodiment, connectors are provided at both ends of the scraper blade where it connects to the first and second chains. Each connector includes a support block, a limiting block, a cover plate, and a mounting plate. A limiting groove is provided on the top of the scraper blade, and the limiting blocks are inserted into the limiting grooves from left to right. Each of the four corners of the left end face of the limiting block has a through hole extending from left to right. The support block is located on the right side of the scraper blade, the cover plate is located on the right side of the support block, and the mounting plate is located on the right side of the cover plate. Each of the four corners of the left end face of the support block, the cover plate, and the mounting plate has a through hole corresponding to the through hole. The support block, the limiting block, the cover plate, and the mounting plate are bolted together and fixed by bolts and nuts. The end of the mounting plate near the first / second chain has a protrusion facing the first / second chain. Each of the left and right ends of the protrusion has a through shaft hole extending from front to back. The shaft hole is used to cooperate with the fixing shaft of the first / second chain.

[0012] By adopting the above technical solution, the support block and cover plate separate the scraper blade from the mounting plate, playing a supporting and fixing role. Then, through the bolting and fixing of bolts and nuts and the limiting role of the limiting block, the mounting plate and the scraper blade will be firmly bolted together. The protruding shaft hole at the lower end of the mounting plate cooperates with the fixing shaft of the first chain and the second chain, so the scraper blade is completely fixedly connected to the first chain and the second chain, so that the scraper blade moves with the movement of the first chain and the second chain, and stops when the first chain and the second chain stop.

[0013] In a further embodiment, the drive module includes a servo motor, a reducer, a sleeve, and a breakage protection switch. The servo motor is connected to the reducer in a transmission manner. The sleeve is fitted on the output shaft of the reducer. A transmission wheel, which is a sprocket, is fitted on the rear end of the drive shaft. A drive wheel, which is a sprocket, is fitted on the output shaft. One end of the breakage protection switch is inserted into the drive wheel, and the other end of the breakage protection switch is fixedly mounted with an ear plate, which is fixedly mounted on the sleeve.

[0014] By adopting the above technical solution, when the first chain and the second chain are obstructed, the sprockets of the drive shaft, the first driven shaft, the second driven shaft, and the third driven shaft slow down, causing the drive shaft to be unable to rotate normally and to be subject to greater resistance. The transmission wheel at the rear end of the drive shaft will drive this resistance to the drive wheel on the output shaft. Therefore, when the shear force between the drive wheel and the ear plate on the output shaft exceeds the abnormal force, the breakage protection switch transmits information to the drive module, thereby the drive module controls the drive shaft to stop rotating.

[0015] In a further embodiment, an audible and visual warning device is installed on the top of the sewage tank.

[0016] By adopting the above technical solution, when the inductive switch detects an abnormality in the system, it will trigger the audible and visual alarm to sound an alarm.

[0017] In a further embodiment, the bottom of the sewage tank is provided with symmetrical wear-resistant strips, and wear-resistant blocks are provided at both ends of the scraper. A rectangular protrusion is provided at one end of each of the two wear-resistant blocks that are facing away from each other. The rectangular protrusion is used to cooperate with the end faces of the wear-resistant strips that are close to each other, so as to prevent the scraper from tilting when it runs at the bottom of the sewage tank.

[0018] By adopting the above technical solution, when the scraper blade moves normally, the rectangular protrusion is used to limit the movement of the wear-resistant block, preventing the wear-resistant block from failing to move in coordination with the wear-resistant strip, and avoiding the scraper blade from tilting when running at the bottom of the sewage tank.

[0019] In a further embodiment, the working surface of the scraper is provided with a wear-resistant coating.

[0020] By adopting the above technical solution, the wear-resistant coating can provide rust prevention and wear resistance, thereby extending the service life of the scraper blade.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. By installing sensor plates at both ends of the sludge scraper and setting corresponding sensor switches on the front and rear sides of the inner top of the sewage tank, the drive module can be protected. Attached Figure Description

[0023] Figure 1 is an overall schematic diagram of this utility model, used to illustrate the internal connection relationship of the sewage tank;

[0024] Figure 2 is a schematic diagram illustrating the structure of the connector in this utility model;

[0025] Figure 3 is a schematic diagram illustrating the structure of the driver module in this utility model.

[0026] In the diagram, 1. Sewage tank; 2. Sludge scraper; 3. Drive shaft; 4. First chain; 5. Second chain; 6. Induction plate; 7. Induction switch; 8. Connector; 81. Support block; 82. Limit block; 83. Cover plate; 84. Mounting plate; 9. Limit groove; 10. Drive module; 101. Servo motor; 102. Reducer; 103. Sleeve; 104. Breakage protection switch; 11. Wear-resistant strip; 12. Wear-resistant block. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the directions in Figure 1, and the terms "bottom surface" and "top surface," "inner" and "outer" refer to the geometry facing or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0029] Example 1:

[0030] As shown in Figures 1-3, a sludge scraping module for a sewage tank includes a sewage tank 1. The front and rear sides of the top of the sewage tank 1 are respectively provided with a first guide rail and a second guide rail. The front and rear sides of the bottom of the sewage tank 1 are respectively provided with a third guide rail and a fourth guide rail. The first guide rail, the second guide rail, the third guide rail and the fourth guide rail are parallel to each other. The four corners of the rear end of the sewage tank 1 are circumferentially provided with a drive shaft 3, a first driven shaft, a second driven shaft and a third driven shaft, and the drive shaft 3 is located on the upper left side.

[0031] One end of the drive shaft 3 is connected to the drive module 10. The axes of the drive shaft 3, the first driven shaft, the second driven shaft, and the third driven shaft are all in the front-back direction. The front ends of the drive shaft 3, the first driven shaft, the second driven shaft, and the third driven shaft are all fixedly connected to the inner wall of the sewage tank 1 through bearings. Ratchets are sleeved at both ends of the drive shaft 3, the first driven shaft, the second driven shaft, and the third driven shaft. The sewage tank 1 is equipped with a first chain 4 and a second chain 5. The first chain 4 passes around the sprockets at the rear ends of the drive shaft 3, the first driven shaft, the second driven shaft, and the third driven shaft in sequence. The second chain 5 passes around the sprockets at the front ends of the drive shaft 3, the first driven shaft, the second driven shaft, and the third driven shaft in sequence. The first chain 4 and the second chain 5 are both used to drive the drive shaft 3, the first driven shaft, the second driven shaft, and the third driven shaft.

[0032] Multiple scraper blades 2 are fixedly installed at equal intervals on the centrifugal side of the first chain 4, and the front end of the scraper blades 2 is fixedly connected to the centrifugal side of the second chain 5.

[0033] Both ends of the scraper blade 2 are fitted with sensor plates 6. Sensor switches 7 corresponding to the sensor plates 6 are installed on the front and rear sides of the inner top of the sewage tank 1. Connectors 8 are installed at the connection points between both ends of the scraper blade 2 and the first chain 4 and the second chain 5. Each connector 8 includes a support block 81, a limiting block 82, a cover plate 83, and a mounting plate 84. A limiting groove 9 is provided on the top of the scraper blade 2. The limiting blocks 82 are inserted into the limiting grooves 9 from left to right. Through holes are provided at the four corners of the left end face of the limiting blocks 82. The support block 81 is... The cover plate 83 is located to the right of the support block 81, and the mounting plate 84 is located to the right of the cover plate 83. Each of the four corners of the left end face of the support block 81, cover plate 83, and mounting plate 84 has a through hole corresponding to the through hole. The support block 81, limit block 82, cover plate 83, and mounting plate 84 are fixed together by bolts and nuts. The mounting plate 84 has a protrusion facing the first chain 4 / second chain 5 at one end near the first chain 4 / second chain 5. A through shaft is provided at both ends of the protrusion. The hole, the shaft hole, is used to mate with the fixed shaft of the first chain 4 / second chain 5. The drive module 10 includes a servo motor 101, a reducer 102, a sleeve 103, and a breakage protection switch 104. The servo motor 101 is connected to the reducer 102. The sleeve 103 is sleeved on the output shaft of the reducer 102. A transmission wheel, which is a sprocket, is sleeved on the rear end of the drive shaft 3. A drive wheel, which is a sprocket, is sleeved on the output shaft. One end of the breakage protection switch 104 is inserted into the drive wheel. The other end of 04 is fixedly installed with an ear plate, which is fixedly installed on the sleeve 103. The top of the sewage tank 1 is equipped with an audible and visual warning device. The bottom of the sewage tank 1 is equipped with symmetrical wear-resistant strips 11. Both the front and rear ends of the scraper 2 are equipped with wear-resistant blocks 12. The ends of the two wear-resistant blocks 12 that are opposite to each other are equipped with rectangular protrusions. The rectangular protrusions are used to cooperate with the end faces of the wear-resistant strips 11 that are close to each other to prevent the scraper 2 from tilting when it runs in the bottom of the sewage tank 1. The working surface of the scraper 2 is equipped with a wear-resistant coating.

[0034] Specific implementation process: Under normal operating conditions of the scraper, if the sludge distribution at the bottom of the sewage tank is uneven, the first or second chain is deformed, or the wear-resistant blocks or strips are damaged, the scraper will tilt due to uneven force. At this time, the induction switches located on the front and rear sides of the top of the sewage tank sense the time it takes for the induction plates at the front and rear ends of the same scraper to pass through the induction switches. When the time difference is greater than the threshold set by the system, the induction switches transmit the information to the drive module, which then stops working and drives the audible and visual alarm to issue an alarm signal, serving as a warning. At the same time, the first and second chains are obstructed, and the drive shaft cannot rotate normally. The drive wheel sleeved on the output shaft of the drive module will be subject to greater resistance from the transmission wheel at the rear end of the drive shaft. When the shear force between the drive wheel and the ear plate exceeds the default value set by the system, the breakage protection switch will be triggered, transmitting information to the drive module. The drive module will stop working and cause the audible and visual alarm to issue an alarm signal, raising awareness.

[0035] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A sludge scraping module for a sewage tank, comprising a sewage tank (1), characterized in that: The sewage tank (1) has a first guide rail and a second guide rail on the front and rear sides of the top interior, and a third guide rail and a fourth guide rail on the front and rear sides of the bottom interior. The first guide rail, the second guide rail, the third guide rail, and the fourth guide rail are parallel to each other. The four corners of the rear interior of the sewage tank (1) are circumferentially arranged with a drive shaft (3), a first driven shaft, a second driven shaft, and a third driven shaft, and the drive shaft (3) is located on the upper left side. One end of the drive shaft (3) is connected to a drive module (10). The axes of the drive shaft (3), the first driven shaft, the second driven shaft, and the third driven shaft are all in the front-rear direction. The front ends of the drive shaft (3), the first driven shaft, the second driven shaft, and the third driven shaft are all fixedly connected to the inner wall of the sewage tank (1) through bearings. The front and rear ends of the drive shaft (3), the first driven shaft, the second driven shaft, and the third driven shaft are all in the front-rear direction. Each chain is equipped with a ratchet. The sewage tank (1) is equipped with a first chain (4) and a second chain (5). The first chain (4) passes through the sprockets at the rear ends of the drive shaft (3), the first driven shaft, the second driven shaft, and the third driven shaft in sequence. The second chain (5) passes through the sprockets at the front ends of the drive shaft (3), the first driven shaft, the second driven shaft, and the third driven shaft in sequence. Both the first chain (4) and the second chain (5) are used to drive the drive shaft (3), the first driven shaft, the second driven shaft, and the third driven shaft. Multiple scraper blades (2) are fixedly installed at equal intervals on the centrifugal side of the first chain (4). The front end of the scraper blades (2) is fixedly connected to the centrifugal side of the second chain (5). Both ends of the scraper blades (2) are equipped with induction plates (6). The front and rear sides of the inner top of the sewage tank (1) are equipped with induction switches (7) corresponding to the induction plates (6).

2. The sludge scraping module for a sewage tank (1) according to claim 1, characterized in that: Both ends of the scraper (2) are provided with connectors (8) at the connection points between the scraper (2) and the first chain (4) and the second chain (5). The connectors (8) include a support block (81), a limiting block (82), a cover plate (83), and a mounting plate (84). The top of the scraper (2) is provided with a limiting groove (9). The limiting block (82) is inserted into the limiting groove (9) from left to right. The four corners of the left end face of the limiting block (82) are provided with through holes. The support block (81) is located on the right side of the scraper (2). The cover plate (83) is located on the right side of the support block (81). The mounting plate (84) is located on the right side of the scraper (2). 84) is set on the right side of the cover plate (83), and the four corners of the left end face of the support block (81), the cover plate (83) and the mounting plate (84) are provided with through holes corresponding to the through holes. The support block (81), the limiting block (82), the cover plate (83) and the mounting plate (84) are fixed by bolts and nuts. The mounting plate (84) has a protrusion facing the first chain (4) / second chain (5) at one end near the first chain (4) / second chain (5). The left and right ends of the protrusion are provided with shaft holes that pass through from front to back. The shaft holes are used to cooperate with the fixed shaft of the first chain (4) / second chain (5).

3. The sludge scraping module for a sewage tank (1) according to claim 1, characterized in that: The drive module (10) includes a servo motor (101), a reducer (102), a sleeve (103), and a breakage protection switch (104). The servo motor (101) is connected to the reducer (102) in a transmission. The sleeve (103) is fitted on the output shaft of the reducer (102). A transmission wheel, which is a sprocket, is fitted on the rear end of the drive shaft (3). A drive wheel, which is a sprocket, is fitted on the output shaft. One end of the breakage protection switch (104) is inserted into the drive wheel. The other end of the breakage protection switch (104) is fixedly mounted with an ear plate, which is fixedly mounted on the sleeve (103).

4. The sludge scraping module for a sewage tank (1) according to claim 1, characterized in that: The top of the sewage tank (1) is equipped with an audible and visual warning device.

5. The sludge scraping module for a sewage tank (1) according to claim 1, characterized in that: The sewage tank (1) is provided with symmetrical wear-resistant strips (11) at the bottom of the interior. The scraper (2) is provided with wear-resistant blocks (12) at both ends. The two wear-resistant blocks (12) are provided with rectangular protrusions at opposite ends. The rectangular protrusions are used to cooperate with the end faces of the wear-resistant strips (11) that are close to each other to prevent the scraper (2) from tilting when it runs at the bottom of the sewage tank (1).

6. The sludge scraping module for a sewage tank (1) according to claim 1, characterized in that: The working surface of the scraper (2) is provided with a wear-resistant coating.

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