Metal chain mud scraping device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a metal chain mud scraping device which comprises a sedimentation tank and a scraper sleeve, a mounting frame is mounted on the inner side of the sedimentation tank, pull rods penetrate through the front side and the rear side of the mounting frame, one end of each pull rod is fixedly connected with a mounting block, and a spring is arranged between the mounting block and the mounting frame. And the pull rod is positioned in the spring. The defects in the prior art are overcome, only the screw needs to be rotated after the scraping plate is ground to be short, the screw rotates to drive the scraping plate in threaded connection with the screw to extend out of the scraping plate sleeve, the second limiting block limits movement of the screw, the extending scraping plate can continue to be used, and therefore the purpose of prolonging the service life of the scraping plate is achieved; when the transmission shaft is dismounted, the pull rods at the two ends of the mounting frame are pulled out, the pull rods can drive the mounting blocks connected with the pull rods to move outwards, the transmission shaft can be taken out at the moment, and therefore the purpose that the transmission shaft can be dismounted without additional tools is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a metal chain mud scraping device. Background Art

[0002] The metal chain scraper is a device used in the sedimentation tank of a sewage treatment plant. It is mainly used to scrape the mud at the bottom of the tank into the mud collection pit. The working principle of the metal chain scraper is to drive the chain to circulate in the tank through a transmission device. The scraper makes continuous linear motion on the chain to scrape the mud at the bottom of the tank into the mud collection pit. Since the chain is made of metal, it has a high load-bearing capacity and wear resistance, and can operate stably for a long time. In combination with the existing literature, a non-metallic chain scraper (CN216457100U includes a sedimentation tank, and multiple traction sprockets are rotatably installed on the two side walls of the sedimentation tank, and the multiple traction sprockets on the same side of the sedimentation tank are connected by a ring-shaped traction chain; a scraper is installed across the two traction chains; a tension adjustment device is provided in the sedimentation tank, and the tension adjustment device includes an adjustment sprocket connected to the traction chain, and the adjustment sprocket is rotatably installed on a slider, which is arranged in a slide groove, and the slide groove is vertically installed on the inner side wall of the sedimentation tank, and a hydraulic cylinder that can drive the slider to move along the length direction of the slide groove is fixed on the inner side wall of the sedimentation tank) can be known that at least the following defects are exposed during use:

[0003] 1. During long-term use, the scraper of the existing chain scraper device will be worn due to friction between the scraper and the sludge. After the scraper is worn down to a certain length, it is usually replaced. Long-term friction shortens the service life of the scraper. Therefore, a chain scraper device that can extend the service life of the scraper is needed.

[0004] 2. Existing chain scraper devices usually use connectors to install the drive shaft on the mounting frame. When disassembling the drive shaft, additional tools are needed to separate and disassemble the connector, the drive shaft and the mounting frame, which is rather troublesome. Therefore, a chain scraper device is needed that can disassemble the drive shaft without additional tools. Utility Model Content

[0005] The utility model aims to provide a metal chain mud scraper device to solve the problems of the existing chain mud scraper device in the use process mentioned in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A metal chain mud scraper device comprises a sedimentation tank and a scraper cover, a mounting frame is installed on the inner side of the sedimentation tank, and pull rods are provided on both the front and rear sides of the mounting frame, one end of the pull rod is fixedly connected to a mounting block, a spring is provided between the mounting block and the mounting frame, and the pull rod is located inside the spring; a scraper is nested inside the scraper cover, a screw is threadedly connected to the lower side of the scraper, and the screw is only threaded inside the scraper, and a second limit block is fixedly installed on the outer side of the screw.

[0008] Preferably, a transmission motor is installed on the upper side of the sedimentation tank, one end of the transmission motor driving shaft is connected to a second transmission sprocket, the outer side of the second transmission sprocket is meshed with a second chain, and the inner side of the second chain is meshed with a third transmission sprocket.

[0009] Preferably, the interior of the third transmission sprocket is fixedly connected to a transmission shaft, the outer side of the transmission shaft is fixedly mounted with two first transmission sprockets, and the outer sides of the first transmission sprockets are meshed with first chains.

[0010] Preferably, a scraper cover is installed on the outer side of the first chain, and the first chain and the scraper cover are vertically arranged.

[0011] Preferably, first limit blocks are provided on both left and right sides of the scraper, and a limit sleeve is fixedly installed at the center position of the lower end of the scraper sleeve.

[0012] Preferably, the second limiting block is located inside the limiting sleeve, and the second limiting block and the limiting sleeve are both cylindrical.

[0013] Preferably, a latch is movably connected to the upper end of the mounting frame, a latch hole is provided on the outer side of the pull rod, and the latch fits in the latch hole.

[0014] The present invention provides a metal chain mud scraper device, which has the following beneficial effects:

[0015] 1. By setting the scraper sleeve, scraper, screw and second limit block, after the scraper is worn short, it is only necessary to rotate the screw. The rotation of the screw will drive the scraper threadedly connected thereto to extend out of the scraper sleeve, and the second limit block will limit the movement of the screw. The extended scraper can continue to be used, thereby achieving the purpose of extending the service life of the scraper.

[0016] 2. By setting up the mounting frame, pull rod, mounting block and spring, when the drive shaft needs to be disassembled, just pull out the pull rods at both ends of the mounting frame, and the pull rods will drive the mounting blocks connected to them to move outward, and the mounting blocks will compress the springs between the mounting blocks and the mounting frame. At this time, the drive shaft can be taken out, and after loosening the pull rods, the mounting blocks will return to their original position under the action of the springs, thereby achieving the purpose of disassembling the drive shaft without the need for additional tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the scraper sleeve of the utility model;

[0020] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 It is a schematic diagram of the structure of the mounting frame of the utility model.

[0022] In the figure: 1, sedimentation tank; 2, transmission shaft; 3, first transmission sprocket; 4, first chain; 5, mounting frame; 6, transmission motor; 7, second transmission sprocket; 8, second chain; 9, third transmission sprocket; 10, scraper sleeve; 11, scraper; 12, first limit block; 13, second limit block; 14, limit sleeve; 15, screw; 16, mounting block; 17, spring; 18, latch; 19, pull rod; 20, latch hole. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example: Figure 1As shown, a metal chain mud scraper device includes a transmission motor 6, which is a driving motor of the metal chain mud scraper device. The transmission motor 6 can drive the second transmission sprocket 7 to rotate, thereby driving the second chain 8 meshing on the outer side of the second transmission sprocket 7, and the second chain 8 can drive the third transmission sprocket 9 to rotate. Since the center of the third transmission sprocket 9 is fixedly connected to the transmission shaft 2, and the outer side of the transmission shaft 2 is fixedly installed with the first transmission sprocket 3, when the third transmission sprocket 9 drives the transmission shaft 2 to rotate, the first transmission sprocket 3 can be driven to rotate, and the first The transmission sprocket 3 can also drive the first chain 4 meshing with it, and the outer side of the first chain 4 is provided with a scraper sleeve 10 and a scraper 11. When the first chain 4 is driven by the transmission motor 6, the first chain 4 will make a circular motion in the sedimentation tank 1 through the four first transmission sprockets 3, and the scraper 11 is perpendicular to the first chain 4. The scraper 11 makes continuous linear motion on the first chain 4 and scrapes the mud at the bottom of the sedimentation tank 1 into the mud collecting pit. The sedimentation tank 1 only shows one side of the inner wall in the figure, and all the mounting frames 5 are fixedly and symmetrically installed on both sides of the inner wall of the sedimentation tank 1.

[0025] like Figure 1-3 As shown, the first limit blocks 12 on the left and right sides of the scraper 11 are used to prevent the scraper 11 from separating from the scraper cover 10, and the limit sleeve 14 fixedly installed at the lower end center of the scraper cover 10 is used to limit the movement of the second limit block 13, so that the second limit block 13 can only rotate inside the limit sleeve 14. Since the screw 15 is fixedly connected to the second limit block 13, and the screw 15 is only provided with a thread at the connection with the scraper 11, when the screw 15 is rotated, the screw 15 can only rotate by itself under the action of the limit sleeve 14 and the second limit block 13. When the screw 15 rotates, it can drive the scraper 11 threadedly connected to it to move up and down in the scraper cover 10.

[0026] like Figure 1 and Figure 4 As shown, the metal chain scraper device can be fixed as a whole by rotating the transmission shaft 2 and installing it inside the mounting frame 5. The size formed by the mounting frame 5 and the two mounting blocks 16 is consistent with the size of the transmission shaft 2. When the transmission shaft 2 needs to be installed, it is only necessary to pull the two pull rods 19 outward. Since the mounting block 16 is fixedly connected to the pull rod 19, the mounting block 16 will compress the spring 17 under the pulling of the pull rod 19. At this time, the transmission shaft 2 can be placed in the mounting frame 5. After loosening the pull rod 19, the mounting block 16 can move inward under the action of the spring 17, and the transmission shaft 2 can be installed inside the mounting frame 5. At this time, the pin 18 at the upper end of the mounting frame 5 is inserted downward until the pin 18 enters the pin hole 20 on the outside of the pull rod 19, and the mounting block 16 can be fixed.

[0027] Working principle: When the service life of the scraper needs to be extended, it is only necessary to rotate the screw 15 after shortening it to a certain length. Since the screw 15 is fixedly connected to the second limit block 13, and the second limit block 13 can only rotate inside the limit sleeve 14, and the screw 15 is only provided with threads at the connection with the scraper 11, when the screw 15 is rotated, the screw 15 can only rotate by itself under the action of the limit sleeve 14 and the second limit block 13. When the screw 15 rotates, it can drive the scraper 11 threadedly connected thereto to move outward in the scraper sleeve 10, so that the scraper 11 can continue to be used. In order to extend the service life of the scraper 11, when the drive shaft 2 needs to be disassembled without additional tools, it is only necessary to pull out the pin 18 from the pin hole 20 on the outside of the pull rod 19, and then pull the two pull rods 19 outward. Since the mounting block 16 is fixedly connected to the pull rod 19, the mounting block 16 will compress the spring 17 under the pull of the pull rod 19. At this time, the drive shaft 2 can be taken out of the mounting frame 5, and then the pull rod 19 is released. The mounting block 16 can move inward under the action of the spring 17 until it returns to its original position, and the drive shaft 2 can be disassembled without additional tools.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metal chain scraper device, characterized in that: include: A sedimentation tank (1) and a scraper cover (10), wherein a mounting frame (5) is installed inside the sedimentation tank (1), and a pull rod (19) is provided through both the front and rear sides of the mounting frame (5), one end of the pull rod (19) is fixedly connected to a mounting block (16), a spring (17) is provided between the mounting block (16) and the mounting frame (5), and the pull rod (19) is located inside the spring (17); The scraper (11) is nested inside the scraper sleeve (10), the lower side of the scraper (11) is threadedly connected with a screw rod (15), and the screw rod (15) is only provided with threads inside the scraper (11), and a second limit block (13) is fixedly installed on the outer side of the screw rod (15).

2. The metal chain mud scraping device according to claim 1, characterized in that: A transmission motor (6) is installed on the upper side of the sedimentation tank (1); one end of the drive shaft of the transmission motor (6) is connected to a second transmission sprocket (7); a second chain (8) is meshed on the outer side of the second transmission sprocket (7); and a third transmission sprocket (9) is meshed on the inner side of the second chain (8).

3. The metal chain mud scraping device according to claim 2, characterized in that: The third transmission sprocket (9) is fixedly connected to a transmission shaft (2) inside, and two first transmission sprockets (3) are fixedly mounted on the outside of the transmission shaft (2), and the outsides of the first transmission sprockets (3) are meshed with first chains (4).

4. The metal chain mud scraping device according to claim 3, characterized in that: A scraper cover (10) is installed on the outer side of the first chain (4), and the first chain (4) and the scraper cover (10) are arranged vertically.

5. The metal chain mud scraping device according to claim 1, characterized in that: The scraper (11) is provided with first limit blocks (12) on both left and right sides, and a limit sleeve (14) is fixedly mounted at the center position of the lower end of the scraper sleeve (10).

6. The metal chain mud scraping device according to claim 1, characterized in that: The second limiting block (13) is located inside the limiting sleeve (14); the second limiting block (13) and the limiting sleeve (14) are both cylindrical.

7. The metal chain mud scraping device according to claim 1, characterized in that: The upper end of the mounting frame (5) is movably connected with a latch pin (18), and the outer side of the pull rod (19) is provided with a latch pin hole (20), and the latch pin (18) fits in the latch pin hole (20).

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