Center transmission type mud scraper

Abstract

The utility model discloses a center transmission type mud scraper, relates to the technical field of mud scrapers, solves the problem that a mud scraping plate of the center transmission type mud scraper can only scrape sludge deposited at the bottom of a sedimentation tank and cannot scrape sludge attached to the side wall of the sedimentation tank in the rotating process, and comprises the sedimentation tank, a channel platform is fixedly mounted on the upper side of the sedimentation tank, a hollow rotating shaft is rotationally mounted at the lower end of the channel platform, a sludge scraping frame is fixedly mounted on the outer side, close to the lower end, of the hollow rotating shaft, and the sludge scraping structure is used for scraping sludge attached to the side wall of the sedimentation tank; sludge attached to the inner wall of the sedimentation tank can be scraped by mounting the scraping structure and the scraping plate, so that the sedimentation tank is cleaned more thoroughly, and the scraping plate can be separated from the inner wall of the sedimentation tank when the inner wall of the sedimentation tank does not need to be cleaned by mounting the driving structure and the connecting assembly, so that the abrasion of the scraping plate can be effectively reduced, and the service life of the sedimentation tank is prolonged. And the service life of the scraper is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mud scrapers, in particular to a central transmission type mud scraper. Background Art

[0002] The center-drive scraper is suitable for scraping and removing sludge from radial flow (circular) sedimentation tanks with a diameter of no more than 18m in water plants or sewage treatment plants in water supply and drainage projects. The raw water of the center-drive scraper flows radially to the overflow tank around the tank after being distributed by the central water distribution cylinder. As the flow rate decreases, the suspended matter in the water body is separated and settled at the bottom of the tank, and the supernatant is discharged from the tank through the overflow weir plate and the outlet tank.

[0003] The scraper blade of the existing central drive scraper is set at the bottom of the sedimentation tank. However, when the suspended matter in the water body settles to the bottom of the tank, sludge will also adhere to the side walls of the sedimentation tank. However, the scraper blade of the central drive scraper can only scrape off the sludge deposited on the bottom of the sedimentation tank during rotation, but cannot scrape off the sludge attached to the side walls of the sedimentation tank, which makes the central drive scraper have shortcomings during use. Utility Model Content

[0004] The utility model aims to provide a central transmission type scraper capable of cleaning the sludge attached to the side wall of a sedimentation tank, which can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a central transmission scraper, comprising a sedimentation tank, a channel platform is fixedly installed on the upper side of the sedimentation tank, a hollow shaft is rotatably installed on the lower end of the channel platform, a scraper frame is fixedly installed on the outer side of the hollow shaft near its lower end, and also comprises a scraping structure for scraping sludge attached to the side wall of the sedimentation tank, two symmetrically distributed scraping structures are installed at both ends of the scraper frame; a driving structure is used to drive the two scraping structures to move, and the driving structure is installed on the outer side of the hollow shaft; a connecting component is used to connect the scraper frame and the scraper structure, and two symmetrically distributed connecting components are installed between the scraper frame and the scraper structure.

[0006] Preferably, the scraping structure comprises a scraper movably fitted with the inner wall of the sedimentation tank, and a fixing plate is fixedly sleeved on the side of the scraper away from the inner wall of the sedimentation tank, and the fixing plate is used to fix the scraper.

[0007] Preferably, the driving structure includes a positioning seat fixedly sleeved on the outer side of the hollow rotating shaft, the outer side of the hollow rotating shaft is located between the positioning seat and the scraper frame and is movably sleeved with a sleeve, an electric push rod is installed between the positioning seat and the sleeve, the electric push rod can drive the sleeve to move upward, and the two ends of the electric push rod are respectively fixedly connected to the positioning seat and the sleeve.

[0008] Preferably, two symmetrically distributed pull ropes are fixedly embedded in the lower end of the sleeve, and the end of the pull rope away from the sleeve is fixedly connected to the fixed plate, and the outer side of the pull rope is movably sleeved with a bending tube, which can limit the moving trajectory of the pull rope, and the connection between the bending tube and the scraper frame is a fixed connection.

[0009] Preferably, the connecting assembly includes a sleeve fixedly connected to the scraper frame, and an embedded rod that can move left and right is movably embedded in one end of the sleeve away from the scraper frame. The cross-sectional shape of the embedded rod is circular, and the connection between the embedded rod and the fixed plate is a fixed connection.

[0010] Preferably, one end of the embedded rod located inside the sleeve is fixedly connected with a gasket, which can prevent the embedded rod from escaping from the sleeve, and a side of the gasket away from the embedded rod is movably abutted against a spring.

[0011] Preferably, the fixing plate is provided with a plurality of through holes which are distributed at equal distances, and the through holes facilitate liquid to pass through the fixing plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model installs a scraping structure, in which a scraper is fitted with the inner wall of the sedimentation tank and can rotate with the scraper frame, so that when the hollow shaft drives the scraper frame and the scraper to rotate, the scraper can scrape off the sludge attached to the inner wall of the sedimentation tank, so that the sedimentation tank can be cleaned more thoroughly.

[0014] 2. The utility model installs a driving structure and a connecting component. The electric push rod in the driving structure can drive the sleeve to move upward. The upward movement of the sleeve can drive the two scrapers to move closer to each other through the pull rope, which is beneficial to separate the scraper from the inner wall of the sedimentation tank when there is no need to clean the inner wall of the sedimentation tank, thereby effectively reducing the wear of the scraper and extending the service life of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the removal of the sedimentation tank of the utility model;

[0017] Figure 3This is a schematic diagram of the connection between the driving structure, scraping structure and connecting components of the utility model;

[0018] Figure 4 It is a side sectional schematic diagram of the connection assembly of the utility model.

[0019] In the figure: 1. sedimentation tank; 2. channel platform; 3. hollow rotating shaft; 4. scraper frame; 5. scraping structure; 501. scraper; 502. fixing plate; 6. driving structure; 601. positioning seat; 602. sleeve seat; 603. electric push rod; 604. pull rope; 605. bending guide tube; 7. connecting assembly; 701. sleeve; 702. embedded rod; 703. gasket; 704. spring; 8. through hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1: Please refer to Figure 1 , Figure 2 The figure shows a central transmission type scraper, which includes a sedimentation tank 1, a channel platform 2 is fixedly installed on the upper side of the sedimentation tank 1, a hollow shaft 3 is rotatably installed on the lower end of the channel platform 2, and a scraper frame 4 is fixedly installed on the outer side of the hollow shaft 3 near its lower end. It also includes a scraping structure 5 for scraping sludge attached to the side wall of the sedimentation tank 1, and two symmetrically distributed scraping structures 5 are installed at both ends of the scraper frame 4; a driving structure 6 is used to drive the two scraping structures 5 to move, and the driving structure 6 is installed on the outer side of the hollow shaft 3; a connecting component 7 is used to connect the scraper frame 4 and the scraper structure 5, and two symmetrically distributed connecting components 7 are installed between the scraper frame 4 and the scraper structure 5.

[0022] See also Figure 4 The scraping structure 5 includes a scraper 501 movably fitted with the inner wall of the sedimentation tank 1 , and a fixing plate 502 is fixedly sleeved on one side of the scraper 501 away from the inner wall of the sedimentation tank 1 , and the fixing plate 502 is used to fix the scraper 501 .

[0023] The working principle of the device is to clean the sludge attached to the side wall of the sedimentation tank: when the hollow shaft 3 drives the scraper frame 4 to rotate and scrape off the sludge deposited at the bottom of the sedimentation tank 1, the scraper 501 will rotate together with the scraper frame 4. Since the scraper 501 is movably fitted with the inner wall of the sedimentation tank 1, the sludge attached to the inner wall of the sedimentation tank 1 can be scraped off during the rotation of the scraper 501, thereby achieving the purpose of cleaning the inner wall of the sedimentation tank 1, making the cleaning of the sedimentation tank 1 more thorough.

[0024] Example 2: Please refer to Figure 3 This embodiment further explains Example 1. The driving structure 6 includes a positioning seat 601 fixedly sleeved on the outer side of the hollow rotating shaft 3. The outer side of the hollow rotating shaft 3 is located between the positioning seat 601 and the scraper frame 4 and is movably sleeved with a sleeve seat 602. An electric push rod 603 is installed between the positioning seat 601 and the sleeve seat 602. The electric push rod 603 can drive the sleeve seat 602 to move upward, and the two ends of the electric push rod 603 are fixedly connected to the positioning seat 601 and the sleeve seat 602 respectively.

[0025] See also Figure 3 Two symmetrically distributed pull ropes 604 are fixedly embedded at the lower end of the sleeve 602, and the end of the pull rope 604 away from the sleeve 602 is fixedly connected to the fixed plate 502, and the outer side of the pull rope 604 is movably sleeved with a bending conduit 605, which can limit the moving trajectory of the pull rope 604, and the connection between the bending conduit 605 and the scraper frame 4 is a fixed connection.

[0026] See also Figure 4 The connecting component 7 includes a sleeve 701 fixedly connected to the scraper frame 4, and an embedded rod 702 that can move left and right is movably embedded in the end of the sleeve 701 away from the scraper frame 4. The cross-sectional shape of the embedded rod 702 is circular, and the connection method between the embedded rod 702 and the fixed plate 502 is a fixed connection. The embedded rod 702 is located inside the sleeve 701. One end is fixedly connected with a gasket 703, and the gasket 703 can prevent the embedded rod 702 from detaching from the sleeve 701. The side of the gasket 703 away from the embedded rod 702 is movably abutted against a spring 704.

[0027] In this embodiment: when it is not necessary to clean the inner wall of the sedimentation tank 1, the personnel controls the electric push rod 603 to operate, and the electric push rod 603 drives the sleeve 602 to move upward on the outer side of the hollow shaft 3. During the upward movement, the sleeve 602 drives the two scrapers 501 to move through the two pull ropes 604, which is conducive to separating the scraper 501 from the inner wall of the sedimentation tank 1 when it is not necessary to clean the inner wall of the sedimentation tank 1, thereby effectively reducing the wear of the scraper 501 and extending the service life of the scraper 501;

[0028] When the inner wall of the sedimentation tank 1 is cleaned, the electric push rod 603 drives the sleeve 602 to move downward and reset. At this time, the scraper 501 will fit the inner wall of the sedimentation tank 1 under the drive of the compression elastic force of the spring 704.

[0029] Example 3: Please refer to Figure 4 This embodiment further explains the first embodiment. A plurality of through holes 8 distributed at equal distances are provided on the fixing plate 502 . The through holes 8 facilitate liquid to pass through the fixing plate 502 .

[0030] In this embodiment, when the fixing plate 502 rotates inside the sedimentation tank 1 , the liquid passes through the fixing plate 502 through the through hole 8 , which can effectively reduce the rotation resistance of the scraping structure 5 .

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "also include" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A central transmission type mud scraper, comprising a sedimentation tank (1), a channel platform (2) is fixedly mounted on the upper side of the sedimentation tank (1), a hollow rotating shaft (3) is rotatably mounted on the lower end of the channel platform (2), a mud scraper frame (4) is fixedly mounted on the outer side of the hollow rotating shaft (3) near its lower end, and characterized in that: Also includes: A scraping structure (5) for scraping away sludge attached to the side wall of the sedimentation tank (1), wherein two symmetrically distributed scraping structures (5) are installed at both ends of the scraping frame (4); A driving structure (6) for driving the two scraping structures (5) to move, the driving structure (6) being mounted on the outside of the hollow rotating shaft (3); A connecting assembly (7) is used to connect the scraper frame (4) and the scraper structure (5); two symmetrically distributed connecting assemblies (7) are installed between the scraper frame (4) and the scraper structure (5).

2. A central transmission type mud scraper according to claim 1, characterized in that: The scraping structure (5) comprises a scraper (501) movably fitted to the inner wall of the sedimentation tank (1), and a fixed plate (502) is fixedly sleeved on a side of the scraper (501) away from the inner wall of the sedimentation tank (1).

3. A central transmission type mud scraper according to claim 2, characterized in that: The driving structure (6) comprises a positioning seat (601) fixedly sleeved on the outside of the hollow rotating shaft (3); a sleeve seat (602) movably sleeved on the outside of the hollow rotating shaft (3) between the positioning seat (601) and the mud scraping frame (4); an electric push rod (603) is installed between the positioning seat (601) and the sleeve seat (602); and two ends of the electric push rod (603) are fixedly connected to the positioning seat (601) and the sleeve seat (602), respectively.

4. A central transmission type mud scraper according to claim 3, characterized in that: Two symmetrically distributed pull ropes (604) are fixedly embedded at the lower end of the sleeve (602), and one end of the pull rope (604) away from the sleeve (602) is fixedly connected to the fixed plate (502), and a bent conduit (605) is movably sleeved on the outer side of the pull rope (604), and the connection between the bent conduit (605) and the scraper frame (4) is a fixed connection.

5. A central transmission type mud scraper according to claim 2, characterized in that: The connecting assembly (7) comprises a sleeve (701) fixedly connected to the scraper frame (4); an end of the sleeve (701) away from the scraper frame (4) is movably embedded with an embedded rod (702) that can move left and right; and the embedded rod (702) and the fixing plate (502) are connected in a fixed manner.

6. A central transmission type mud scraper according to claim 5, characterized in that: One end of the embedded rod (702) located inside the sleeve (701) is fixedly connected to a gasket (703), and the side of the gasket (703) away from the embedded rod (702) is movably abutted against a spring (704).

7. A central transmission type mud scraper according to claim 6, characterized in that: The fixing plate (502) is provided with a plurality of through holes (8) distributed at equal distances.

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