Scanning type mud scraper suitable for rectangular pool

Abstract

The invention discloses a scanning type mud scraper suitable for a rectangular pool. The scanning type mud scraper comprises a central shaft, a fixed arm, a telescopic arm, a guide rail and a power mechanism, wherein the guide rail is arranged along the edge of the rectangular pool, and the telescopic arm is movably inserted into the fixed arm and can be inserted into or extend out of the fixed arm; one end of the telescopic arm can be driven by the power mechanism to move along the guide rail; the fixed arm can rotate by taking the central shaft as an axis; the fixed arm and / or the telescopic arm are / is downwards provided with a connecting rod; the bottom of the connecting rod is connected with a scraping plate for scraping mud at the bottom of the sedimentation tank. The automatic mud scraping device is suitable for automatic mud scraping of the rectangular pool.

Description

Technical Field

[0001] The invention relates to the field of water supply and drainage engineering, and in particular to a mud scraper. Background Art

[0002] The scraper is an indispensable mud removal equipment in the sedimentation tank or clarification tank of the mud-water separation facility in the water supply and drainage project. The sedimentation tank or clarification tank is divided into rectangular tank (including square tank) and circular tank. The rectangular tank is square, easy to arrange, neat and beautiful, and saves space, but it is difficult to distribute water evenly and easily forms beam flow; the circular tank distributes water evenly and there is no beam flow phenomenon, but the non-public part of the circular tank and the square tank outside the circular tank cannot be fully and effectively utilized, and the available effective tank capacity is only 75% (see Figure 1 , that is, under the same floor area, if the circular pool is changed into a square pool, the pool capacity can be increased by 25%). Therefore, the rectangular pool can maximize the effective use of land resources. In order to completely discharge the sludge in the rectangular pool, a scanning scraper must be used. At present, there is still a blank in the market for a reliable scanning scraper. Therefore, our company has developed this scanning scraper. Summary of the invention

[0003] The main purpose of the present invention is to provide a scanning mud scraper suitable for rectangular pools.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A scanning mud scraper suitable for a rectangular pool, comprising a central axis, a fixed arm, a telescopic arm, a guide rail and a power mechanism; wherein the guide rail is arranged along the edge of the rectangular pool, the telescopic arm is movably inserted into the fixed arm and can be inserted or extended relative to the fixed arm; one end of the telescopic arm can be driven by the power mechanism to move along the guide rail, and the fixed arm can rotate with the central axis as the axis; the fixed arm and / or the telescopic arm are provided with a connecting rod downward, and the bottom of the connecting rod is connected to a scraper for scraping mud at the bottom of the sedimentation tank.

[0006] In a preferred embodiment of the present invention, the fixed arm and the telescopic arm are connected by rollers.

[0007] In a preferred embodiment of the present invention, the cross-sections of the fixed arm and the telescopic arm are rectangular, and the rollers are in two groups, each group having eight rollers, with two rollers at each corner of the rectangle, located between the inner wall of the fixed arm and the outer wall of the telescopic arm.

[0008] In a preferred embodiment of the present invention, the rollers are in two groups and are spaced apart on the outer wall along the axial direction of the telescopic arm.

[0009] In a preferred embodiment of the present invention, a mud discharge pit is provided at the bottom center of the rectangular sedimentation tank, a column is provided at the mud discharge pit position, a guide tube is provided on the top of the column, and a water inlet pipe extends upward from the mud discharge pit position at the bottom to the guide tube, is distributed through the guide tube, and then enters the sedimentation tank.

[0010] In a preferred embodiment of the present invention, the central axis is fixed to the top of the guide tube.

[0011] In a preferred embodiment of the present invention, a guide wheel is provided at the bottom of one end of the telescopic arm away from the central axis, and the guide wheel can roll along the guide rail.

[0012] In a preferred embodiment of the present invention, the guide wheel is driven by a power mechanism.

[0013] In a preferred embodiment of the present invention, a plurality of fixed arm connecting rods are arranged at intervals at the bottom of the fixed arm, and the fixed arm connecting rods are connected to a group of scrapers at the bottom; a plurality of telescopic arm connecting rods are arranged at intervals at the bottom of the telescopic arm, and the telescopic arm connecting rods are connected to another group of scrapers.

[0014] In a preferred embodiment of the present invention, there is a first angle between the first scraper and the axis of the fixed arm, and there is a second angle between the second scraper and the axis of the telescopic arm. The first angle and the second angle are 10 degrees to 60 degrees respectively.

[0015] Compared with the background technology, this technical solution has the following advantages:

[0016] 1. The present invention sets a guide rail along the edge of the rectangular pool, and the telescopic arm and the fixed arm can rotate around the central axis, and one end of the telescopic arm can be driven by a power mechanism to move along the guide rail. Therefore, the telescopic arm and the fixed arm can automatically extend and retract according to the distance between the edge and the center of the sedimentation tank, thereby driving the scraper fixed at the bottom of the telescopic arm and the fixed arm to scrape the mud. Therefore, the present invention can be used in a rectangular pool, and compared with a circular sedimentation tank, it improves the utilization rate of the occupied area and increases the water volume of the sedimentation tank.

[0017] 2. The cross-sections of the fixed arm and the telescopic arm of the present invention are rectangular, and the rollers are provided in two groups, each group having eight rollers, and two rollers are provided at each corner of the rectangle, thereby improving the stability of displacement during telescoping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 Schematic diagram of the land utilization rate of square pools and circular pools.

[0020] Figure 2 A top view of a scanning mud scraper according to a preferred embodiment (the scraper is not shown, see Figure 5 ).

[0021] Figure 3 for Figure 2 Schematic diagram of AA direction.

[0022] Figure 4 for Figure 2 Schematic diagram of BB direction.

[0023] Figure 5 Schematic diagram of the scraper and connecting rod.

[0024] In the figure

[0025] 1-Rectangular sedimentation tank 2-Drainage pit 3-Fixed arm 4-Roller 5-Telescopic arm 6-Guide rail 7-Power mechanism 8-Center shaft 9-Center thrust bearing 10-Direction tube 11-Column 12-Fixed arm connecting rod 13-First scraper 14-Guide wheel 15-Pool edge 16-Telescopic arm connecting rod 17-Second scraper DETAILED DESCRIPTION

[0026] Please refer to Figures 2 to 5 A scanning mud scraper suitable for a rectangular sedimentation tank comprises a central axis 8, a fixed arm 3, a telescopic arm 5 and a guide rail 6. The central axis 8 is located at the geometric center of the rectangular sedimentation tank, that is, the intersection of two diagonals. A mud discharge pit 2 is provided at the bottom center of the rectangular sedimentation tank, and a column 11 is provided in the mud discharge pit. A guide tube 10 is provided at the top of the column 11 (the height is close to the water outlet of the sedimentation tank). Water flows upward to the guide tube 10 through the water inlet pipe and then enters the sedimentation tank.

[0027] The central axis 8 is fixed to the top of the guide tube 10. One end of the fixed arm 3 is movably connected to the central axis 6 and can rotate around the central axis 6. Specifically, the fixed arm 3 rotates around the central axis 8 through the central thrust bearing 9. The other end of the fixed arm 3 is movably connected to the telescopic arm 5. Specifically, one end of the telescopic arm 5 is inserted into the fixed arm 3 and can move relative to the axial direction of the fixed arm.

[0028] The rectangular sedimentation tank is provided with a guide rail 6 along the top of the tank edge 15. A guide wheel 14 is provided at one end of the telescopic arm 5 away from the center of the sedimentation tank. The guide wheel 14 is adapted to the guide rail 6 and can roll along the guide rail 6. The guide wheel 14 is driven by a power mechanism 7. The power mechanism 7 is a motor, which is provided at one end of the telescopic arm 5 away from the center of the sedimentation tank. The structure of the motor driving the guide wheel 14 can adopt any existing technology, such as a speed reduction mechanism and a transmission gear.

[0029] The fixed arm 3 is connected to the telescopic arm 5 by rollers, and two groups of rollers are arranged in parallel, each group of 8 rollers. Figure 4The figure shows one set of rollers. The cross-sections of the fixed arm 3 and the telescopic arm 5 are both rectangular, and the rollers are arranged between the inner wall of the fixed arm 3 and the outer wall of the telescopic arm 5. Two rollers are arranged at each corner of the rectangle, so that the telescopic arm cannot move up, down, left and right due to the constraints of the rollers, and can only have two degrees of freedom along the axis direction of the fixed arm, namely telescopic displacement.

[0030] In another embodiment, the positions of the telescopic arm 5 and the fixed arm 3 can be swapped, that is, the telescopic arm 5 is movably connected to the central axis, and the fixed arm 3 is slidably or rollingly connected to the guide rail.

[0031] The bottom of the fixed arm 3 is provided with a plurality of fixed arm links 12 at intervals, and the fixed arm links 12 are connected to a group of scrapers (first scrapers 13) at the bottom; the bottom of the telescopic arm 5 is provided with a plurality of telescopic arm links 16 at intervals, and the telescopic arm links 12 are connected to another group of scrapers (second scrapers 17). The scrapers are used to scrape the sludge at the bottom of the pool, so the bottom thereof is adapted to the bottom slope of the sedimentation tank. There is a first angle between the first scraper 13 and the axis of the fixed arm 3, and there is a second angle between the second scraper 17 and the axis of the telescopic arm 5. The first angle and the second angle can be 10 to 60 degrees respectively. It is conducive to sweeping the mud from the periphery to the center of the sedimentation tank.

[0032] When in use, the motor is turned on to drive the guide wheel 14 to roll along the guide rail 6. Since the diagonal of the rectangle is the longest from the center of the sedimentation tank, and the center of the sideline is the shortest from the center of the sedimentation tank, when the guide wheel 14 moves from the center of the sideline to the corner of the rectangle, the telescopic arm 5 is stretched outward (away from the sedimentation tank) from the fixed arm 3. When the guide wheel 14 moves from the corner of the rectangle to the center of the sideline, the telescopic arm 5 moves and inserts into the fixed arm 3.

[0033] At the same time, the guide wheel 14 also drives the telescopic arm 5 and the fixed arm 3 to rotate around the central axis 8. The telescopic arm 5 and the fixed arm 3 respectively drive the scraper at the bottom to rotate along the bottom of the sedimentation tank through the connecting rod 12 to scrape the mud, so that the mud enters the mud discharge pit 2 for discharge.

[0034] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A scanning mud scraper suitable for rectangular pools, characterized in that: It includes a central axis, a fixed arm, a telescopic arm, a guide rail and a power mechanism; wherein the guide rail is arranged along the edge of the rectangular pool, the telescopic arm is movably inserted into the fixed arm and can be inserted or extended relative to the fixed arm; one end of the telescopic arm can be driven by the power mechanism to move along the guide rail, and the fixed arm can rotate with the central axis as the axis; the fixed arm and / or the telescopic arm is provided with a connecting rod downward, and the bottom of the connecting rod is connected to a scraper for scraping mud at the bottom of the sedimentation tank.

2. A scanning mud scraper suitable for rectangular pools according to claim 1, characterized in that: The fixed arm and the telescopic arm are connected by rollers.

3. A scanning mud scraper suitable for rectangular pools according to claim 2, characterized in that: The cross-sections of the fixed arm and the telescopic arm are rectangular. The rollers are provided in two groups, each group having eight rollers, two rollers are provided at each corner of the rectangle, and are located between the inner wall of the fixed arm and the outer wall of the telescopic arm.

4. A scanning mud scraper suitable for rectangular pools according to claim 3, characterized in that: The rollers are divided into two groups and are arranged at intervals on the outer wall along the axis direction of the telescopic arm.

5. A scanning mud scraper suitable for rectangular pools according to any one of claims 1 to 4, characterized in that: A mud pit is provided at the bottom center of the rectangular sedimentation tank, a column is provided at the mud pit position, a guide tube is provided on the top of the column, and a water inlet pipe extends upward from the bottom mud pit position to the guide tube, is distributed through the guide tube, and then enters the sedimentation tank.

6. A scanning mud scraper suitable for rectangular pools according to claim 5, characterized in that: The central axis is fixed on the top of the guide tube.

7. A scanning mud scraper suitable for rectangular pools according to any one of claims 1 to 4, characterized in that: A guide wheel is provided at the bottom of one end of the telescopic arm away from the central axis, and the guide wheel can roll along the guide rail.

8. The scanning mud scraper suitable for rectangular pools according to claim 7, characterized in that: The guide wheel is driven by a power mechanism.

9. A scanning mud scraper suitable for rectangular pools according to any one of claims 1 to 4, characterized in that: A plurality of fixed arm connecting rods are arranged at intervals at the bottom of the fixed arm, and the fixed arm connecting rods are connected to a group of scrapers at the bottom; a plurality of telescopic arm connecting rods are arranged at intervals at the bottom of the telescopic arm, and the telescopic arm connecting rods are connected to another group of scrapers.

10. A scanning mud scraper suitable for rectangular pools according to claim 9, characterized in that: There is a first angle between the first scraper and the axis of the fixed arm, there is a second angle between the second scraper and the axis of the telescopic arm, and the first angle and the second angle are 10 degrees to 60 degrees respectively.

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