Mud scraper

Abstract

The mud scraper comprises a stand column, the interior of the stand column is designed to be hollow, the top wall of the stand column penetrates through and is rotationally connected with a shaft pipe through a bearing, a rotating cylinder is fixed to the top end of the shaft pipe, the shaft pipe penetrates through the rotating cylinder, and a cross beam is horizontally fixed to the outer side wall of the rotating cylinder; the side, away from the rotary drum, of the cross beam penetrates through and is slidably connected with a plurality of vertical rods, the bottom of each vertical rod is provided with a scraping plate, and the multiple scraping plates are obliquely arranged. According to the sludge scraping device, the stand column, the shaft pipe, the rotary drum, the cross beam, the vertical rod, the scraper, the extrusion assembly, the lifting plate and the gear motor are arranged, when the scraper is located at the bottom of the wastewater pool, a spring of the extrusion assembly can extrude the scraper downwards, so that the scraper is always in contact with the pool bottom, the sludge scraping effect is guaranteed, and even if the scraper is abraded, the scraper can be attached to the pool bottom; and the scraping plate can be detached from the bottom of the extrusion assembly, so that the scraping plate which is seriously abraded can be conveniently replaced.

Description

Technical Field

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

[0002] A center-driven sludge scraper is a mechanical device used in sedimentation tanks of wastewater treatment plants. It primarily collects and transports sludge from the bottom of the sedimentation tank, concentrating the settled sludge at the sludge outlet for subsequent treatment. The scraper, driven by a reduction gear and suspended components, uses scrapers to collect the sludge into a central sludge collection trough, where it is discharged from the tank by hydrostatic pressure or a pump. It employs a central water inlet and sludge discharge system, with peripheral drainage to ensure uniform water flow. Sludge discharge utilizes a self-priming method based on liquid level difference and includes a scum collection and removal device and an overload protection device.

[0003] Existing sludge scrapers include a central support column, with a geared motor at the top of the column driving the cross arm and bottom scraper. However, because the bottom scraper is constantly in contact with the pool bottom, wear occurs at the bottom after prolonged use, preventing complete contact and resulting in gaps during scraping. Furthermore, when the scraper is severely worn, the wastewater inside the pool must be drained before workers can descend to the bottom to disassemble and replace it, making scraper replacement cumbersome. Therefore, to address these shortcomings, this invention proposes a new sludge scraper. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a sludge scraper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sludge scraper, comprising a column, the column having a hollow interior, a shaft tube rotatably connected to the top wall of the column via a bearing, a rotating cylinder fixed to the top of the shaft tube, the shaft tube penetrating the rotating cylinder, a horizontal beam fixed to the outer wall of the rotating cylinder, multiple vertical rods slidably connected to the side of the horizontal beam away from the rotating cylinder, a scraper provided at the bottom of each vertical rod, the multiple scrapers being inclined, a squeezing assembly connected between each scraper and the corresponding vertical rod above, a lifting plate being fixed to the top of the multiple vertical rods, a reduction motor for driving the shaft tube to rotate being installed at the top of the inside of the column, and a lifting drive assembly for driving the lifting plate to move being installed inside the column.

[0006] Furthermore, the extrusion assembly includes an end plate fixed to the bottom of the vertical rod, a first guide rod slidably connected through the side of the end plate, a pressure plate fixed to the bottom of the first guide rod, and an installation sleeve fixed to the lower surface of the pressure plate. An installation rod is fixed to the top of the scraper, and the installation rod is fixed to the inside of the installation sleeve by bolts.

[0007] Furthermore, a spring is fixedly connected to both the upper surface of the pressure plate and the lower surface of the end plate.

[0008] Furthermore, a drive gear is fixedly connected to the output end of the geared motor, and a driven gear is fixed to the outer wall of the shaft tube, with the driven gear meshing with the drive gear.

[0009] Furthermore, a traveling wheel is installed on the lower surface of the beam at the end away from the column.

[0010] Furthermore, the lifting drive assembly includes a second guide rod vertically fixed inside the column, a guide plate slidably sleeved on the surface of the second guide rod, and an internally threaded tube fixed at the other end of the guide plate. The top end of the internally threaded tube passes through the inside of the shaft tube and the middle of the rotating cylinder and is rotatably connected to the lower surface of the lifting plate through a bearing.

[0011] Furthermore, the lifting drive assembly also includes a servo motor fixed to the inner bottom wall of the column, and a lead screw is fixed to the output end of the servo motor. The lead screw is located inside the internal threaded tube and is rotatably connected to the internal threaded tube.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model is a sludge scraper equipped with a column, shaft tube, rotating drum, crossbeam, vertical rod, scraper, extrusion assembly, lifting plate and reduction motor. When the scraper is at the bottom of the wastewater tank, the spring of the extrusion assembly will press the scraper downward, so that the scraper is always in contact with the bottom of the tank, ensuring the sludge scraping effect. Even if the scraper is worn, it can still fit against the bottom of the tank. In addition, the scraper can be removed from the bottom of the extrusion assembly, which makes it easy to replace the scraper with severe wear.

[0014] 2. When in use, this utility model of a sludge scraper is equipped with a lifting drive component. The lifting drive component can drive the lifting plate to rise and fall, thereby causing the bottom extrusion component and scraper to float out of the wastewater, which facilitates the disassembly and replacement of the scraper. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 : Overall schematic diagram of this utility model;

[0017] Figure 2 Partial perspective view of this utility model;

[0018] Figure 3 The present utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 The present utility model Figure 1 Enlarged view of section B in the middle.

[0020] The attached figures are labeled as follows:

[0021] 1. Column; 2. Shaft tube; 21. Driven gear; 3. Rotary drum; 4. Crossbeam; 5. Vertical rod; 6. Scraper; 61. Mounting rod; 7. Extrusion assembly; 71. End plate; 72. First guide rod; 73. Pressure plate; 74. Mounting sleeve; 75. Spring; 8. Lifting plate; 9. Gear motor; 91. Drive gear; 10. Traveling wheel; 11. Lifting drive assembly; 111. Servo motor; 112. Lead screw; 113. Internally threaded tube; 114. Guide plate; 115. Second guide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-3 As shown, a sludge scraper is disclosed, comprising a column 1, which has a hollow interior. A shaft tube 2 is rotatably connected to the top wall of the column 1 via a bearing. A rotating drum 3 is fixed to the top of the shaft tube 2, and the shaft tube 2 passes through the rotating drum 3. A crossbeam 4 is horizontally fixed to the outer wall of the rotating drum 3. Multiple vertical rods 5 are slidably connected to the side of the crossbeam 4 away from the rotating drum 3. Each vertical rod 5 has a scraper 6 at its bottom, and the multiple scraper blades 6 are inclined. A squeezing assembly 7 is connected between each scraper 6 and the corresponding vertical rod 5 above it. A lifting plate 8 is fixed to the top of the multiple vertical rods 5. A reduction motor 9 for driving the shaft tube 2 to rotate is installed at the top of the inside of the column 1, and a lifting drive assembly 11 for driving the lifting plate 8 to move is installed inside the column 1.

[0024] The extrusion assembly 7 includes an end plate 71 fixed to the bottom of the vertical rod 5. A first guide rod 72 is slidably connected through the side of the end plate 71. A pressure plate 73 is fixed to the bottom of the first guide rod 72, and an installation sleeve 74 is fixed to the lower surface of the pressure plate 73. An installation rod 61 is fixed to the top of the scraper 6, and the installation rod 61 is fixed to the inside of the installation sleeve 74 by bolts.

[0025] After the mounting rod 61 and the mounting sleeve 74 are fixedly connected by bolts, the scraper 6 can also be removed from the lower surface of the pressure plate 73, which makes it easy to disassemble and replace the scraper 6.

[0026] A spring 75 is fixedly connected to the upper surface of the pressure plate 73 and the lower surface of the end plate 71.

[0027] When spring 75 is installed, the spring force of spring 75 can always press the scraper 6 downward, so that even if the bottom of scraper 6 is worn, the bottom of scraper 6 can always be in contact with the bottom of the pool, thus preventing the formation of gaps in the scraping mud.

[0028] The output end of the geared motor 9 is fixedly connected to the drive gear 91, and the outer wall of the shaft tube 2 is fixed with the driven gear 21, which meshes with the drive gear 91.

[0029] Driven by the driven gear 21 and the driving gear 91, the geared motor 9 can drive the shaft tube 2 to rotate, thereby driving the rotating drum 3 at the top of the shaft tube 2 to rotate, which in turn drives the crossbeam 4, the vertical rod 5 and the bottom scraper 6 to rotate, thereby scraping the sludge at the bottom of the pool using the scraper 6.

[0030] A traveling wheel 10 is installed on the lower surface of the end of the crossbeam 4 away from the column 1.

[0031] The walking wheels 10 are located on the upper edge of the side wall of the pool. The walking wheels 10 can support the crossbeam 4 and prevent the crossbeam 4 from putting a burden on the rotating cylinder 3.

[0032] The lifting drive assembly 11 includes a second guide rod 115 vertically fixed inside the column 1. A guide plate 114 is slidably sleeved on the surface of the second guide rod 115. An internal threaded tube 113 is fixed to the other end of the guide plate 114. The top end of the internal threaded tube 113 passes through the inside of the shaft tube 2 and the middle of the rotating drum 3 and is rotatably connected to the lower surface of the lifting plate 8 through a bearing.

[0033] The internally threaded tube 113 can move up and down along the second guide rod 115 via the guide plate 114 and cannot rotate. Since the top of the internally threaded tube 113 is rotatably connected to the lower surface of the lifting plate 8 through a bearing, the internally threaded tube 113 will not affect the lifting plate 8 from rotating with the vertical rod 5 in the pool.

[0034] The lifting drive assembly 11 also includes a servo motor 111 fixed to the inner bottom wall of the column 1. A lead screw 112 is fixed to the output end of the servo motor 111. The lead screw 112 is located inside the internal threaded tube 113 and is rotatably connected to the internal threaded tube 113.

[0035] Since the internal threaded tube 113 can only move up and down and cannot rotate, when the servo motor 111 is started and drives the lead screw 112 to rotate, the lead screw 112 will drive the internal threaded tube 113 to move up or down, thereby driving the lifting plate 8 to rise and fall.

[0036] Working Principle: During normal operation, the sludge scraper, after starting the reduction motor 9, drives the rotating drum 3, crossbeam 4, multiple vertical rods 5, bottom scraper 6, and lifting plate 8 to rotate as a whole. The scraper 6 scrapes the sludge from the bottom of the sewage tank, causing it to fall into the sludge trough in the middle of the tank (the working principle here is the same as existing sludge scrapers). Under the pressure of the spring 75, the scraper 6 remains in contact with the tank bottom. When the scraper 6 is severely worn and needs replacement, the servo motor 111 is started, driving the lead screw 112 to rotate. The lead screw 112 then drives the internal threaded tube 113 to move upwards along the direction of the second guide rod 115. The internal threaded tube 113 then moves the lifting plate 8 upwards, causing the scraper 6 to float out of the water surface, facilitating disassembly and replacement. After replacement, the servo motor 111 is started in reverse rotation, causing the scraper 6 to descend back into the tank.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sludge scraper, comprising a column (1), characterized in that: The column (1) is hollow inside. The top wall of the column (1) is connected to the shaft tube (2) through the bearing. The top of the shaft tube (2) is fixed with a rotating cylinder (3) and the shaft tube (2) passes through the rotating cylinder (3). The outer wall of the rotating cylinder (3) is horizontally fixed with a crossbeam (4). The side of the crossbeam (4) away from the rotating cylinder (3) is connected to multiple vertical rods (5). Each vertical rod (5) is provided with a scraper (6) at the bottom. The multiple scrapers (6) are set at an inclination. Each scraper (6) is connected to the corresponding vertical rod (5) above it with a pressing component (7). The top of the multiple vertical rods (5) is fixed with a lifting plate (8). The top of the column (1) is equipped with a reduction motor (9) that drives the shaft tube (2) to rotate. The column (1) is equipped with a lifting drive component (11) that drives the lifting plate (8) to move.

2. A sludge scraper according to claim 1, characterized in that: The extrusion assembly (7) includes an end plate (71) fixed to the bottom of the vertical rod (5). A first guide rod (72) is slidably connected through the side of the end plate (71). A pressure plate (73) is fixed to the bottom of the first guide rod (72), and an installation sleeve (74) is fixed to the lower surface of the pressure plate (73). An installation rod (61) is fixed to the top of the scraper (6), and the installation rod (61) is fixed to the inside of the installation sleeve (74) by bolts.

3. A sludge scraper according to claim 2, characterized in that: The upper surface of the pressure plate (73) and the lower surface of the end plate (71) are both fixedly connected to a spring (75).

4. A sludge scraper according to claim 1, characterized in that: The output end of the geared motor (9) is fixedly connected to a drive gear (91), and a driven gear (21) is fixed to the outer wall of the shaft tube (2). The driven gear (21) meshes with the drive gear (91).

5. A sludge scraper according to claim 1, characterized in that: The lower surface of the crossbeam (4) away from the column (1) is equipped with a traveling wheel (10).

6. A sludge scraper according to claim 1, characterized in that: The lifting drive assembly (11) includes a second guide rod (115) vertically fixed inside the column (1). A guide plate (114) is slidably sleeved on the surface of the second guide rod (115). An internal threaded tube (113) is fixed at the other end of the guide plate (114). The top end of the internal threaded tube (113) passes through the inside of the shaft tube (2) and the middle of the rotating drum (3) and is rotatably connected to the lower surface of the lifting plate (8) through a bearing.

7. A sludge scraper according to claim 6, characterized in that: The lifting drive assembly (11) also includes a servo motor (111) fixed to the inner bottom wall of the column (1). The output end of the servo motor (111) is fixed with a lead screw (112). The lead screw (112) is located inside the internal threaded tube (113) and is rotatably connected to the internal threaded tube (113).

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