Sedimentation tank and mud scraping mechanism thereof

Abstract

The mud scraping mechanism comprises a first stop lever mechanism, a movable vehicle body and a second stop lever mechanism, the movable vehicle body is connected with a driving mechanism, a first limiting shaft and a second limiting shaft are arranged at the two ends of the movable vehicle body respectively, and a mud scraping shaft is arranged at the bottom of the movable vehicle body. The first limiting shaft, the mud scraping shaft and the second limiting shaft are sequentially in transmission connection, a first limiting plate, a mud scraping plate and a second limiting plate are arranged on the first limiting shaft, the mud scraping shaft and the second limiting shaft respectively, the first limiting plate is perpendicular to the mud scraping plate, and the mud scraping plate is parallel to the second limiting plate. When the movable vehicle body moves towards the second stop lever mechanism, the sludge scraping plate is in a vertical state, and the sludge scraping plate can scrape sludge to move; when the movable vehicle body moves towards the first stop lever mechanism, the sludge scraping plate is in a horizontal state and does not make contact with the bottom wall of the sedimentation tank, so that sludge scraping is avoided, the sludge is prevented from moving in the direction away from the sludge collecting hopper, and the sludge scraping effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment equipment, in particular to a sedimentation tank and a mud scraping mechanism thereof. Background Art

[0002] Sedimentation tanks are very commonly used sewage treatment facilities. Solid particles in sewage settle to the bottom of the sedimentation tank under the action of gravity. The sludge at the bottom of the sedimentation tank is difficult to concentrate in a certain area, resulting in difficulty in discharging sludge in some areas in time. Therefore, a sludge scraping mechanism needs to be set at the bottom of the sedimentation tank.

[0003] There are many existing scraping mechanisms. For example, CN201820899369.4 discloses a sedimentation tank scraper, including a winch motor and a scraping assembly for cleaning the sludge at the bottom of the tank; the winch motor drives the scraping assembly to reciprocate; the scraping assembly is provided with a plurality of wedge-shaped scrapers for scraping mud; the wedge-shaped scraper is formed with a concave surface for promoting the movement of sludge and an inclined surface for guiding the sludge to cross the wedge-shaped scraper; the sedimentation tank is formed with a sludge bucket for collecting sludge; the concave surface of the wedge-shaped scraper is located between the inclined surface of the wedge-shaped scraper and the sludge bucket; one side of the concave surface is defined as the front side; one side of the inclined surface is defined as the rear side; the forward movement speed of the scraping assembly is less than the backward movement speed of the scraping assembly; the winch motor includes: a first winch motor and a second winch motor; the first winch motor drives the scraping assembly to move forward; the second winch motor drives the scraping assembly to move backward; the sedimentation tank scraper also includes a wire rope; the scraping assembly is fixed to the wire rope; the two ends of the wire rope are respectively connected to the first winch motor and the second winch motor. Although the scraper adopts a wedge-shaped scraper, when the wedge-shaped scraper moves backward, a small amount of sludge will still be scraped backward, causing the sludge to move away from the sludge bucket, thereby reducing the scraping efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sedimentation tank and a mud scraping mechanism thereof to ensure the mud scraping effect.

[0005] To solve the above problems, the technical solution adopted by the utility model is: a mud scraping mechanism, including a first gear mechanism, a mobile body and a second gear mechanism, the mobile body is located between the first gear mechanism and the second gear mechanism, and the mobile body is connected to a driving mechanism that drives the mobile body to move back and forth between the first gear mechanism and the second gear mechanism, and the first limiting shaft and the second limiting shaft are respectively provided at both ends of the mobile body, and the bottom of the mobile body is provided with a mud scraping shaft, the first limiting shaft, the mud scraping shaft and the second limiting shaft are sequentially transmission-connected, and the transmission ratio is 1:1:1, and the first limiting shaft, the mud scraping shaft and the second limiting shaft are respectively provided with a first limiting plate, a mud scraping plate and a second limiting plate, the first limiting plate is perpendicular to the mud scraping plate, and the mud scraping plate is parallel to the second limiting plate, when the first limiting plate moves toward the first gear mechanism, the first limiting plate is in a vertical state, and when the first limiting plate reaches the movement of the first gear mechanism, the first gear mechanism pushes the first limiting plate to rotate to a horizontal state.

[0006] Furthermore, the first baffle mechanism comprises a first bracket, and a horizontal first baffle is arranged on the first bracket.

[0007] Furthermore, the second baffle mechanism includes a second bracket, and a horizontal second baffle is provided on the second bracket.

[0008] Furthermore, the driving mechanism comprises a motor, and the motor is connected to the moving vehicle body via a chain and sprocket mechanism.

[0009] Furthermore, the first limiting shaft, the scraping shaft and the second limiting shaft are connected via a belt.

[0010] Furthermore, a limiting block is provided on one side of the upper portion of the scraper blade facing the second limiting axis.

[0011] The sedimentation tank comprises a tank body and the above-mentioned mud scraping mechanism, wherein the moving vehicle body, the first baffle mechanism and the second baffle mechanism are arranged at the bottom of the tank body, the driving mechanism is arranged at the top of the tank body, a mud collecting bucket is arranged below the second baffle mechanism, and a mud discharge mechanism is arranged at the bottom of the mud collecting bucket.

[0012] Furthermore, the mud discharge mechanism comprises a mud discharge pipe, and a mud discharge pump is provided on the mud discharge pipe.

[0013] Furthermore, an inclined plate assembly is provided inside the pool body.

[0014] The beneficial effects of the utility model are as follows: when the mobile body of the utility model moves toward the second gear mechanism, the scraper plate is in a vertical state, and the scraper plate can scrape the sludge to move; when the mobile body moves toward the first gear mechanism, the scraper plate is in a horizontal state and will not contact the bottom wall of the sedimentation tank, so it will not scrape the sludge, thus preventing the sludge from moving in a direction away from the sludge collecting bucket, thereby ensuring the sludge scraping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main view of the utility model when scraping mud;

[0016] Figure 2 This is a schematic diagram of the main view of the utility model when the mud is not scraped;

[0017] Figure 3 It is a top view schematic diagram of the first limiting shaft, the scraping shaft and the second limiting shaft of the utility model;

[0018] Figure numerals: 1—mobile body; 2—first limiting shaft; 3—second limiting shaft; 4—mud scraping shaft; 5—first limiting plate; 6—mud scraping plate; 7—second limiting plate; 8—first bracket; 9—first gear lever; 10—second bracket; 11—second gear lever; 13—motor; 14—chain sprocket mechanism; 15—limiting block; 20—tank body; 21—mud collecting bucket; 22—mud discharge pipe; 23—mud discharge pump; 24—inclined plate assembly. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] The sedimentation tank of the utility model is as follows Figure 1 , Figure 2 and Figure 3 As shown, the tank body 20 includes a tank body 20 and a scraping mechanism. The tank body 20 can adopt various existing forms of sedimentation tank bodies, such as metal tank bodies and concrete tank bodies, and is in a rectangular shape. One side of the tank body 20 is provided with a water inlet for introducing sewage, and the other side is provided with a drain outlet for discharging sewage.

[0021] The scraper mechanism is used to scrape the sludge deposited at the bottom of the pool body 20, and specifically includes a first lever mechanism, a mobile body 1, and a second lever mechanism. The mobile body 1 is located between the first lever mechanism and the second lever mechanism, and the mobile body 1 is connected to a driving mechanism for driving the mobile body 1 to move back and forth between the first lever mechanism and the second lever mechanism. The two ends of the mobile body 1 are respectively provided with a first limiting shaft 2 and a second limiting shaft 3. The bottom of the mobile body 1 is provided with a scraper shaft 4. The first limiting shaft 2, the scraper shaft 4, and the second The limiting shaft 3 is connected in sequence with a transmission ratio of 1:1:1. The first limiting shaft 2, the scraper shaft 4 and the second limiting shaft 3 are respectively provided with a first limiting plate 5, a scraper plate 6 and a second limiting plate 7. The first limiting plate 5 is perpendicular to the scraper plate 6, and the scraper plate 6 is parallel to the second limiting plate 7. When the first limiting plate 5 moves toward the first gear mechanism, the first limiting plate 5 is in a vertical state. When the first limiting plate 5 reaches the first gear mechanism and moves, the first gear mechanism pushes the first limiting plate 5 to rotate to a horizontal state.

[0022] The mobile body 1, the first lever mechanism and the second lever mechanism are arranged at the bottom of the pool body 20, the driving mechanism is arranged at the top of the pool body 20, a mud collecting bucket 21 is arranged below the second lever mechanism, and a mud discharge mechanism is arranged at the bottom of the mud collecting bucket 21. Since there is sewage of a certain depth in the pool body 20, the driving mechanism is arranged at the top of the pool body 20 to avoid the driving mechanism being immersed in sewage and easily damaged, and to facilitate later maintenance and repair.

[0023] The mobile body 1 includes a frame and a group of rollers at the bottom of the frame, and the rollers can roll to reduce the resistance of the mobile body 1 when it moves. The first limiting shaft 2, the second limiting shaft 3 and the scraping shaft 4 are all horizontally installed on the mobile body 1, and the first limiting shaft 2, the second limiting shaft 3 and the scraping shaft 4 can rotate around their own center lines. The first limiting plate 5, the scraping plate 6 and the second limiting plate 7 are respectively fixedly installed on the first limiting shaft 2, the scraping shaft 4 and the second limiting shaft 3, so that the first limiting plate 5 can rotate synchronously with the first limiting shaft 2, the scraping plate 6 can rotate synchronously with the scraping shaft 4, and the second limiting plate 7 can rotate synchronously with the second limiting shaft 3. Since the first limiting shaft 2, the scraping shaft 4 and the second limiting shaft 3 are sequentially connected in transmission, and the transmission ratio is 1:1:1, when the first limiting shaft 2 rotates 90°, the scraping shaft 4 and the second limiting shaft 3 will also rotate 90°, and when the second limiting shaft 3 rotates 90°, the scraping shaft 4 and the first limiting shaft 2 will also rotate 90°. Therefore, by changing the position of the first limiting plate 5 and the second limiting plate 7, the position of the scraping plate 6 can be changed. The first blocking rod mechanism and the second blocking rod mechanism play the role of limiting and controlling the position of the scraping plate 6. The first blocking rod mechanism and the second blocking rod mechanism are respectively installed on the two side walls of the pool body 20. The first blocking rod mechanism and the second blocking rod mechanism are at a suitable height, which can respectively block the first limiting plate 5 and the second limiting plate 7, so that the first limiting plate 5 and the second limiting plate 7 are rotated from a vertical state to a horizontal state.

[0024] In the present invention, when the first limit plate 5 moves toward the first stop lever mechanism, the first limit plate 5 is in a vertical state, and the scraper plate 6 and the second limit plate 7 are in a horizontal state. At this time, there is a gap between the scraper plate 6 and the bottom wall of the pool body 20, and the scraper plate 6 will not scrape the sludge. When the first limit plate 5 reaches the movement of the first stop lever mechanism, the first stop lever mechanism pushes the first limit plate 5 to gradually rotate to a horizontal state. When the first limit plate 5 rotates, it drives the first limit shaft 2 to rotate, and the first limit shaft 2 drives the second limit shaft 3 and the scraper shaft 4 to rotate, so that the scraper plate 6 and the second limit plate 7 rotate to a vertical state. After the first limit plate 5 is horizontal, the moving body 1 stops moving and moves in the opposite direction driven by the driving mechanism, that is, the moving body 1 starts to move in the direction of the second lever mechanism. Since the scraper 6 is in a vertical state, the lower side of the scraper 6 can contact the bottom wall of the pool body 20, thereby scraping the sludge on the bottom wall of the pool body 20 and moving in the direction of the mud collecting bucket 21 until the sludge enters the mud collecting bucket 21. When the sludge enters the mud collecting bucket 21, the second limit plate 7 contacts the second lever mechanism and rotates under the push of the second lever mechanism until the second limit plate 7 rotates to a horizontal state, the second limit plate 7 drives the second limit shaft 3 to rotate, and the second limit shaft 3 drives the scraper shaft 4 and the first limit shaft 2 to rotate, so that the scraper 6 returns to a horizontal state, and the first limit plate 5 returns to a vertical state.

[0025] The utility model can automatically adjust the position of the mud scraper 6 according to the moving direction of the mobile vehicle body 1 to prevent the mud from moving in a direction away from the mud collecting bucket 21, thereby ensuring the mud scraping effect.

[0026] The first baffle mechanism includes a first bracket 8, on which a horizontal first baffle 9 is provided. The second baffle mechanism includes a second bracket 10, on which a horizontal second baffle 11 is provided. The first bracket 8 and the second bracket 10 can be formed by splicing profiles, as long as they can stably support the first baffle 9 and the second baffle 11. The first baffle 9 and the second baffle 11 can be metal rods, specifically round rods, rectangular rods, angle steels, channel steels, etc.

[0027] The driving mechanism comprises a motor 13, and the motor 13 is connected to the mobile body 1 through a chain sprocket mechanism 14. The motor 13 is installed on the top of the pool body 20 to prevent it from being immersed in sewage. The chain sprocket mechanism 14 comprises a chain and a sprocket, and there are multiple sprockets. A transmission shaft is arranged on the mobile body 1, and a roller is arranged on the transmission shaft. A sprocket is also arranged on the transmission shaft at the same time. A sprocket is also arranged on the main shaft of the motor 13 and the side wall of the pool body 20. The sprocket on the side wall of the pool body 20 plays a guiding role to ensure that the chain is distributed in an L shape. When the motor 13 rotates, the chain is driven to move through the sprocket, and the chain rotates through the sprocket on the transmission shaft, thereby driving the transmission shaft to rotate, and prompting the mobile body 1 to walk. The rotation direction of the motor 13 is different, and the mobile body 1 can be moved in different directions. In addition, the driving mechanism can also adopt a belt mechanism driven by the motor 13.

[0028] The first limiting shaft 2, the scraper shaft 4 and the second limiting shaft 3 can be connected by transmission parts such as gears. Preferably, the first limiting shaft 2, the scraper shaft 4 and the second limiting shaft 3 are connected by a belt. After the belt connection, the first limiting shaft 2, the scraper shaft 4 and the second limiting shaft 3 have the same rotation direction.

[0029] When scraping mud, the bottom of the scraper blade 6 is subject to resistance from the mud. In order to prevent the scraper blade 6 from automatically rotating under the action of resistance, a limit block 15 is provided on the upper part of the scraper blade 6 toward the side of the second limit axis 3. When the scraper blade 6 rotates to a vertical state, the side of the scraper blade 6 contacts the limit block 15. The limit block 15 can support the scraper blade 6 to prevent the scraper blade 6 from rotating.

[0030] The mud discharge mechanism of the utility model comprises a mud discharge pipe 22, on which a mud discharge pump 23 is arranged. The mud discharge pipe 22 is connected with the bottom of the mud collecting bucket 21. Under the action of the mud discharge pump 23, the mud in the mud collecting bucket 21 is transported to the mud treatment equipment through the mud discharge pipe 22.

[0031] In order to improve the sedimentation effect of solid particles, an inclined plate assembly 24 is provided inside the tank body 20 .

[0032] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Mud scraping mechanism, characterized by: The invention comprises a first shift lever mechanism, a moving vehicle body (1) and a second shift lever mechanism, wherein the moving vehicle body (1) is located between the first shift lever mechanism and the second shift lever mechanism, and the moving vehicle body (1) is connected to a driving mechanism for driving the moving vehicle body (1) to move back and forth between the first shift lever mechanism and the second shift lever mechanism, a first limiting shaft (2) and a second limiting shaft (3) are respectively arranged at two ends of the moving vehicle body (1), a mud scraping shaft (4) is arranged at the bottom of the moving vehicle body (1), and the first limiting shaft (2), the mud scraping shaft (4) and the second limiting shaft (3) are sequentially connected in transmission. The transmission ratio is 1:1:

1. The first limiting shaft (2), the scraping shaft (4) and the second limiting shaft (3) are respectively provided with a first limiting plate (5), a scraping plate (6) and a second limiting plate (7). The first limiting plate (5) is perpendicular to the scraping plate (6), and the scraping plate (6) is parallel to the second limiting plate (7). When the first limiting plate (5) moves toward the first shift lever mechanism, the first limiting plate (5) is in a vertical state. When the first limiting plate (5) reaches the first shift lever mechanism, the first shift lever mechanism pushes the first limiting plate (5) to rotate to a horizontal state.

2. The mud scraping mechanism according to claim 1, characterized in that: The first blocking rod mechanism comprises a first bracket (8), and a horizontal first blocking rod (9) is arranged on the first bracket (8).

3. The mud scraping mechanism according to claim 1, characterized in that: The second blocking rod mechanism comprises a second bracket (10), and a horizontal second blocking rod (11) is arranged on the second bracket (10).

4. The mud scraping mechanism according to claim 1, characterized in that: The driving mechanism comprises a motor (13), and the motor (13) is connected to the moving vehicle body (1) via a chain sprocket mechanism (14).

5. The mud scraping mechanism according to claim 1, characterized in that: The first limiting shaft (2), the mud scraping shaft (4) and the second limiting shaft (3) are connected via a belt.

6. The mud scraping mechanism according to claim 1, characterized in that: A limiting block (15) is provided on one side of the upper part of the scraper blade (6) facing the second limiting axis (3).

7. Sedimentation tank, characterized by: It comprises a pool body (20) and the scraping mechanism according to claim 1, wherein the moving body (1), the first baffle mechanism and the second baffle mechanism are arranged at the bottom of the pool body (20), the driving mechanism is arranged at the top of the pool body (20), a mud collecting bucket (21) is arranged below the second baffle mechanism, and a mud discharging mechanism is arranged at the bottom of the mud collecting bucket (21).

8. The sedimentation tank according to claim 7, characterized in that: The mud discharge mechanism comprises a mud discharge pipe (22), and a mud discharge pump (23) is arranged on the mud discharge pipe (22).

9. The sedimentation tank according to claim 7, characterized in that: An inclined plate assembly (24) is arranged inside the pool body (20).

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