A mud scraping device for a sedimentation tank

Abstract

The utility model relates to the field of mud scraping of sewage treatment sedimentation tank, disclose a kind of mud scraping device of sedimentation tank for sewage treatment, including sedimentation tank, the beam being set in the upper portion of sedimentation tank, the support being fixedly connected in the bottom end of beam, the support plate one being fixedly connected in the bottom end of support and the multiple groups of scrapers being set in the bottom end of support plate one, the upper portion of the scraper is provided with cleaning mechanism, the cleaning mechanism includes cleaning assembly, cleaning assembly includes the cleaning plate slidingly connected in the outer wall of the both sides of multiple groups of scrapers respectively, and the support strip slidingly connected in the outer wall of multiple groups of scrapers is fixedly connected in the top end of multiple groups of cleaning plate respectively. In the utility model, by the cleaning plate in cleaning assembly moving in the outer wall of scraper, the mud attached to the outer wall of scraper can be scraped in time by multiple groups of cleaning plate cooperation, avoid the influence of mud accumulation on mud scraping efficiency, ensure that the scraper always maintains good mud scraping performance, convenient cleaning, reduce labor intensity, improve the continuity and stability of sewage treatment simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of sludge scraping in sedimentation tanks for sewage treatment, and in particular to a sludge scraping device for sedimentation tanks used in sewage treatment. Background Technology

[0002] In wastewater treatment, sedimentation tanks are a crucial component, primarily used to remove suspended solids and some colloidal substances from wastewater. Through gravity sedimentation, pollutants are separated, thereby improving water quality. The sludge scraper is a core auxiliary device for sedimentation tanks, and its performance directly affects the tank's operational efficiency and wastewater treatment effectiveness.

[0003] Traditional sludge scraping devices for sedimentation tanks have many problems in practical applications. Some sludge scraping devices only have a single sludge scraping function. During the scraping process, sludge adheres to the surface of the scraper. Over time, this adhered sludge will gradually accumulate, which not only increases the weight of the scraper and the energy consumption of the equipment, but also seriously affects the sludge scraping effect, resulting in a significant decrease in sludge scraping efficiency and failing to meet the high-efficiency requirements of sewage treatment. Therefore, a sludge scraping device for sedimentation tanks in sewage treatment is proposed to solve the above problems. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a sludge scraping device for sedimentation tanks in sewage treatment, which aims to improve the problem of "sludge adhering to the scraper, making it inconvenient to clean" in the prior art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sludge scraping device for a sedimentation tank in wastewater treatment, comprising a sedimentation tank, a crossbeam disposed on the upper part of the sedimentation tank, a support fixedly connected to the bottom end of the crossbeam, a support plate fixedly connected to the bottom end of the support, and multiple sets of scrapers disposed on the bottom end of the support plate. A cleaning mechanism is disposed above the scrapers, the cleaning mechanism comprising a cleaning assembly, the cleaning assembly comprising cleaning plates slidably connected to the outer walls on both sides of the multiple sets of scrapers, and the top ends of the multiple sets of cleaning plates are fixedly connected to scrapers slidably connected to the multiple sets of scrapers. The outer wall of the plate has support strips, and the front surfaces of multiple sets of support strips are fixedly connected to guide plates. The front top of each set of guide plates is provided with a guide rod. The rear surface of the first support plate is fixedly connected to the second support plate through multiple sets of fixedly connected inclined blocks. The tops of each set of inclined blocks are through and have guide grooves. The guide rods are respectively through and slidably connected to the inner walls of the corresponding guide grooves. The front surfaces of multiple sets of scrapers are fixedly connected to positioning plates, and the positioning plates extend upward beyond the tops of the multiple sets of scrapers and are located at the bottom of the multiple sets of guide plates.

[0006] As a further description of the above technical solution:

[0007] The cleaning mechanism also includes a transmission assembly.

[0008] As a further description of the above technical solution:

[0009] The transmission assembly includes a servo motor fixedly mounted on the top of the crossbeam. The bottom end of the output shaft of the servo motor is fixedly connected to a transmission rod that passes through and is rotatably connected to the bottom end of the crossbeam. A support block is fixedly connected to the front surface of the middle part of the bracket. The transmission rod passes through and is rotatably connected to the bottom end of the support block. A turntable is fixedly connected to the bottom end of the transmission rod. An eccentric rod is fixedly connected to the bottom end of the turntable that is off-center and close to the outer side. Connecting blocks are fixedly connected between the first support plate and the second support plate near their left and right sides. A cross frame is slidably connected between the two sets of connecting blocks. The eccentric rod is slidably connected to the inner wall of the cross frame near the middle position. Multiple sets of guide rods pass through and are slidably connected to the inner wall of the cross frame.

[0010] As a further description of the above technical solution:

[0011] All of the aforementioned guide plates are L-shaped.

[0012] As a further description of the above technical solution:

[0013] The multiple sets of inclined blocks and multiple sets of guide grooves are all arranged at an inclination, and the multiple sets of inclined blocks and multiple sets of guide grooves are at the same inclination angle as the multiple sets of scrapers.

[0014] As a further description of the above technical solution:

[0015] The top of the scraper is provided with a moving component, which includes multiple sets of support rods and multiple sets of sliding rods. The multiple sets of sliding rods are slidably connected to the bottom of the corresponding multiple sets of guide rods and extend out of the bottom ends of the multiple sets of guide rods.

[0016] As a further description of the above technical solution:

[0017] The top ends of the multiple sets of support rods are elastically connected to the support plate by springs, and a sliding plate is fixedly connected between the top ends of the multiple sets of support rods and the multiple sets of springs.

[0018] As a further description of the above technical solution:

[0019] Each of the multiple sets of sliding plates has a fixedly connected positioning slider on its outer side. The multiple sets of positioning sliders are slidably connected above the corresponding support rods and located at the bottom of the second support plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by using a servo motor to drive the transmission assembly, the cleaning plate in the cleaning assembly moves on the outer wall of the scraper. Multiple sets of cleaning plates work together to promptly scrape off the sludge attached to the outer wall of the scraper, avoiding sludge accumulation that affects the scraping efficiency, ensuring that the scraper always maintains good scraping performance, facilitating cleaning, reducing labor intensity, and improving the continuity and stability of sewage treatment.

[0022] 2. In this utility model, the spring and the support plate are elastically connected, and the sliding rod and the guide rod are slidably connected. The design of the sliding plate and the positioning slider enables the scraper to move automatically upward when it encounters a protrusion at the bottom of the sedimentation tank, avoiding jamming and damage. This enhances the adaptability of the sludge scraping device to different sedimentation tank bottom terrains, improves the reliability and service life of the equipment, and reduces maintenance costs and downtime caused by equipment failure. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the support plate, bracket, and support block of this utility model, as well as a cross-sectional view of the three-dimensional structure of the support block.

[0025] Figure 3 This is a three-dimensional cross-sectional view of the connecting block in this utility model;

[0026] Figure 4 This is a cross-sectional view of the three-dimensional structure of support plate one, support plate two, and inclined block, and a three-dimensional structural disassembly diagram of the connecting block in this utility model.

[0027] Figure 5 This is a three-dimensional structural diagram of the scraper and cleaning plate in this utility model.

[0028] Legend:

[0029] 1. Sedimentation tank; 2. Scraper; 3. Support plate one; 4. Bracket; 5. Crossbeam; 6. Transmission assembly; 7. Cleaning assembly; 8. Moving assembly; 31. Support plate two; 61. Servo motor; 62. Transmission rod; 63. Support block; 64. Connecting block; 65. Turntable; 66. Eccentric rod; 67. Horizontal frame; 71. Cleaning plate; 72. Support bar; 73. Inclined block; 74. Guide groove; 75. Guide rod; 76. Guide plate; 77. Positioning plate; 81. Support rod; 82. Spring; 83. Slide rod. Detailed Implementation

[0030] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a sludge scraping device for a sedimentation tank in wastewater treatment. The device includes a sedimentation tank 1 for treating wastewater, a crossbeam 5 mounted on the upper part of the sedimentation tank 1, a support 4 fixedly connected to the bottom end of the crossbeam 5, a support plate 3 fixedly connected to the bottom end of the support 4, and multiple sets of scrapers 2 mounted on the bottom end of the support plate 3. The crossbeam 5 provides drive and support, the support 4 provides support, and the scrapers 2 are driven to scrape sludge from the bottom end of the inner wall of the sedimentation tank 1. A cleaning mechanism is provided above the scrapers 2, including a cleaning assembly 7. The cleaning assembly 7 includes cleaning plates 71 slidably connected to the outer walls on both sides of the multiple sets of scrapers 2. The cleaning plates 71 can move on the outer walls of the scrapers 2 to remove sludge from the outer walls of the scrapers 2. For scraping, the top of each of the multiple sets of cleaning plates 71 is fixedly connected to a support strip 72 that is slidably connected to the outer wall of the multiple sets of scrapers 2. The support strip 72 supports the cleaning plates 71. The bottom of the support strip 72 is fixedly connected to the cleaning plates 71 near the front and rear ends. The initial position of the cleaning plates 71 is located in the middle and rear of the scraper 2. Therefore, when the cleaning plates 71 move, the middle cleaning plate 71 moves to the position near the front end of the scraper 2, and the rear cleaning plate 71 moves to the middle position of the scraper 2. Thus, the outer wall of the scraper 2 can be completely cleaned by working together. The opposite surfaces of the two sets of support strips 72 are fixedly connected to a moving block that supports their stable movement and is horizontally slidably connected to the outer wall of the scraper 2 near the top.

[0032] Furthermore, the front surfaces of multiple sets of support bars 72 are all fixedly connected to guide plates 76 that drive the support bars 72 and cleaning plates 71 to move. The top front of each set of guide plates 76 is provided with guide rods 75 that drive the guide plates 76 to move. The rear surface of support plate 1 3 is fixedly connected to support plate 2 31 through multiple sets of fixedly connected inclined blocks 73. The inclined blocks 73 cooperate with the guide grooves 74 to guide the guide plates 76 to move, driving the cleaning plates 71 to move on the outer wall of the scraper 2 to scrape away the mud for cleaning. The tops of each set of inclined blocks 73 are all through and have guide grooves 74. The multiple sets of guide rods 75 are respectively through and slidably connected to the inner walls of the corresponding multiple sets of guide grooves 74. The front surfaces of each set of scrapers 2 are all fixedly connected to positioning plates 77 that limit the distance the guide plates 76 can move. The multiple sets of positioning plates 77 extend upward beyond the top of the multiple sets of scrapers 2 and are located at the bottom of the multiple sets of guide plates 76.

[0033] Reference Figure 1, Figure 2 and Figure 3 The cleaning mechanism also includes a transmission assembly 6, which includes a servo motor 61 fixedly mounted on the top of the crossbeam 5. The servo motor 61 drives the transmission rod 62 to rotate. The bottom end of the output shaft of the servo motor 61 is fixedly connected to the transmission rod 62, which passes through and is rotatably connected to the bottom end of the crossbeam 5. The transmission rod 62 drives the turntable 65 to move. A support block 63 is fixedly connected to the front surface of the middle part of the bracket 4 to support the transmission rod 62 and make it rotate stably. The transmission rod 62 passes through and is rotatably connected to the bottom end of the support block 63. The bottom end of the transmission rod 62 is fixedly connected to the turntable 65, which drives the eccentric rod 66 to rotate. The bottom end of the turntable 65, which is off-center and close to the outside, is fixedly connected to the crossbeam 65. The eccentric rod 66 moves back and forth. The support plate 1 3 and the support plate 2 31 are fixedly connected to the connecting blocks 64 that support the stable movement of the horizontal frame 67. The horizontal frame 67, which drives multiple sets of guide rods 75 to move back and forth, is slidably connected between the two sets of connecting blocks 64. The eccentric rod 66 is slidably connected to the inner wall of the horizontal frame 67 near the middle position. The multiple sets of guide rods 75 are all through and slidably connected to the inner wall of the horizontal frame 67. Through the cooperation of the horizontal frame 67 and the guide groove 74, the guide rods 75 can be pushed forward and moved in the direction of the guide groove 74 at an inclination, thereby driving the cleaning plate 71 to move on the outer wall of the scraper 2 to scrape off the soil attached to the outer wall of the scraper 2 for cleaning.

[0034] Reference Figure 2 , Figure 3 and Figure 4 The multiple guide plates 76 are all L-shaped. The L-shape allows the guide plates 76 and cleaning plates 71 to move a certain distance after they reach the positioning plate 77. This restricts the movement of the guide plates 76 and cleaning plates 71, so that the cleaning plates 71 at the bottom front end of the support bar 72 stop after moving to the position near the front end of the scraper 2 and cannot be removed, thus preventing them from falling. At the same time, it can stably clean. The multiple sets of inclined blocks 73 and multiple sets of guide grooves 74 are all inclined, and the multiple sets of inclined blocks 73 and multiple sets of guide grooves 74 are inclined at the same angle as the multiple sets of scraper 2. By having the same inclination angle, the cleaning plates 71 can be guided to move stably on the outer wall of the scraper 2 to scrape away the soil.

[0035] Reference Figure 3 , Figure 4 and Figure 5The top of the scraper 2 is provided with a moving component 8, which includes multiple sets of support rods 81 supporting the scraper 2 and multiple sets of sliding rods 83 supporting and driving multiple sets of guide plates 76. The multiple sets of sliding rods 83 are slidably connected to the bottom of the corresponding multiple sets of guide rods 75 and extend out of the bottom of the multiple sets of guide rods 75. The tops of the multiple sets of support rods 81 are elastically connected to the support plate 31 by springs 82. When the scraper 2 moves to scrape sludge from the bottom of the inner wall of the sedimentation tank 1, the springs 82 can make the scraper reach the bottom of the sedimentation tank 1. The raised part prevents jamming, allowing the scraper 2 to move upwards and preventing damage from jamming. The slide rod 83, in conjunction with the guide rod 75, allows the scraper 2 to move upwards. Slides are fixedly connected between the top of multiple support rods 81 and multiple springs 82. Positioning sliders are fixedly connected to the outer side of multiple slides. Multiple positioning sliders are slidably connected above the corresponding support rods 81 and located at the bottom of the support plate 31. The slides and positioning sliders work together to allow the scraper 2 to move up and down stably without rotating.

[0036] Working principle: When in use, sedimentation tank 1 is used to treat sewage, crossbeam 5 provides the driving and support foundation for the entire device, and bracket 4 further stabilizes the device structure. Multiple sets of scrapers 2 installed at the bottom of support plate 3 move along the bottom of the inner wall of sedimentation tank 1 under the driving action, scraping up the sludge settled at the bottom of the tank and concentrating it for subsequent treatment.

[0037] When a lot of mud adheres to the outer wall of scraper 2, affecting the scraping efficiency, the servo motor 61 at the top of the crossbeam 5 is activated to drive the transmission rod 62 to rotate. The transmission rod 62 drives the turntable 65 and the eccentric rod 66 to rotate. During the rotation, the eccentric rod 66 at the bottom of the turntable 65 drives the cross frame 67 to move forward between the connecting blocks 64. At the same time, when the cross frame 67 moves forward, it pushes the guide rod 75 to move. The guide rod 75 slides in the inner wall of the guide groove 74 on the inclined block 73 on the rear surface of the support plate 3. With the cooperation of the cross frame 67 and the guide groove 74, the guide rod 75 moves forward and moves in the direction of the guide groove 74 and the inclination of scraper 2, thereby driving the guide plate 76 connected to it to move. The guide plate 76 then drives the support bar 72 and multiple sets of cleaning plates 71 to move on both sides of the outer wall of scraper 2. During the movement, the multiple sets of cleaning plates 71 scrape off the mud adhering to the outer wall of scraper 2, realizing the function of cleaning scraper 2.

[0038] When scraper 2 encounters a protrusion at the bottom of the inner wall of sedimentation tank 1 during the sludge scraping process, scraper 2 is subjected to an upward force, which drives support rod 81 to move upward and slide on the inner wall of support plate 2 31. This compresses spring 82 and simultaneously drives cleaning plate 71, support bar 72, guide plate 76, and slide bar 83 to move. The slide bar 83 slides on the inner wall of guide bar 75, allowing scraper 2 to move upward and preventing it from being stuck and damaged by the protrusion. The sliding plate between the top of support rod 81 and spring 82, and the positioning slider fixedly connected to the outside of the sliding plate, slide above the corresponding support rod 81 and at the bottom of support plate 2 31, ensure that scraper 2 can only move up and down stably without rotating, thereby improving the adaptability of scraper 2.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sludge scraping device for a sedimentation tank in wastewater treatment, comprising a sedimentation tank (1), a crossbeam (5) disposed on the upper part of the sedimentation tank (1), a support (4) fixedly connected to the bottom end of the crossbeam (5), a support plate (3) fixedly connected to the bottom end of the support (4), and multiple sets of scrapers (2) disposed at the bottom end of the support plate (3), characterized in that: A cleaning mechanism is provided above the scraper (2), and the cleaning mechanism includes a cleaning component (7). The cleaning assembly (7) includes cleaning plates (71) that are slidably connected to the outer walls of the two sides of the multiple sets of scrapers (2). The top of each of the multiple sets of cleaning plates (71) is fixedly connected to a support strip (72) that is slidably connected to the outer wall of the multiple sets of scrapers (2). The front surface of each of the multiple sets of support strips (72) is fixedly connected to a guide plate (76). The top of the front part of each of the multiple sets of guide plates (76) is provided with a guide rod (75). The rear surface of the first support plate (3) is fixedly connected to the second support plate (31) through multiple sets of fixedly connected inclined blocks (73). The top of each of the multiple sets of inclined blocks (73) is through and has a guide groove (74). The multiple sets of guide rods (75) are through and slidably connected to the inner wall of the corresponding multiple sets of guide grooves (74). The front surface of each of the multiple sets of scrapers (2) is fixedly connected to a positioning plate (77). The multiple sets of positioning plates (77) extend upward beyond the top of the multiple sets of scrapers (2) and are located at the bottom of the multiple sets of guide plates (76).

2. The sludge scraping device for sedimentation tanks in wastewater treatment according to claim 1, characterized in that: The cleaning mechanism also includes a transmission assembly (6).

3. The sludge scraping device for sedimentation tanks in wastewater treatment according to claim 2, characterized in that: The transmission assembly (6) includes a servo motor (61) fixedly installed at the top of the crossbeam (5). The bottom of the output shaft of the servo motor (61) is fixedly connected to a transmission rod (62) that passes through and is rotatably connected to the bottom of the crossbeam (5). A support block (63) is fixedly connected to the front surface of the middle part of the bracket (4). The transmission rod (62) passes through and is rotatably connected to the bottom of the support block (63). A turntable (65) is fixedly connected to the bottom of the transmission rod (62). An eccentric rod (66) is fixedly connected to the bottom of the turntable (65) that is off-center and close to the outside. A connecting block (64) is fixedly connected between the first support plate (3) and the second support plate (31) near the left and right sides. A cross frame (67) is slidably connected between the two sets of connecting blocks (64). The eccentric rod (66) is slidably connected to the inner wall of the cross frame (67) near the middle position. Multiple sets of guide rods (75) pass through and are slidably connected to the inner wall of the cross frame (67).

4. The sludge scraping device for sedimentation tanks in wastewater treatment according to claim 1, characterized in that: All of the guide plates (76) are L-shaped.

5. A sludge scraping device for sedimentation tanks in wastewater treatment according to claim 1, characterized in that: The multiple sets of inclined blocks (73) and multiple sets of guide grooves (74) are all inclined, and the multiple sets of inclined blocks (73) and multiple sets of guide grooves (74) are inclined at the same angle as the multiple sets of scrapers (2).

6. The sludge scraping device for sedimentation tanks in wastewater treatment according to claim 1, characterized in that: The top of the scraper (2) is provided with a moving component (8), which includes multiple sets of support rods (81) and multiple sets of slide rods (83). The multiple sets of slide rods (83) are slidably connected to the bottom of the corresponding multiple sets of guide rods (75) and extend out of the bottom end of the multiple sets of guide rods (75).

7. A sludge scraping device for sedimentation tanks in wastewater treatment according to claim 6, characterized in that: The top ends of the multiple sets of support rods (81) are elastically connected to the second support plate (31) via springs (82), and a sliding plate is fixedly connected between the top ends of the multiple sets of support rods (81) and the multiple sets of springs (82).

8. A sludge scraping device for sedimentation tanks in wastewater treatment according to claim 7, characterized in that: The outer sides of the multiple sets of sliding plates are fixedly connected with positioning sliders, and the multiple sets of positioning sliders are slidably connected above the corresponding support rod (81) and located at the bottom of the support plate two (31).

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