Shock absorbing device for working bridge of central drive mud scraper of secondary sedimentation tank of sewage plant

Abstract

The utility model relates to a sewage plant secondary sedimentation tank center transmission mud scraper working bridge damping device, contain working bridge, track surface, rubber -tired, rubber -tired support, center drive arrangement, pool bottom mud scraping board, damping module, connecting module, center drive arrangement sets up below one end of working bridge, pool bottom mud scraping board sets up below the middle part of working bridge, and with working bridge rigid connection, connecting module fixed setting is located one end of working bridge away from center drive arrangement, connecting module is used for connecting working bridge and damping module, damping module symmetry sets up in the both sides of connecting module, the bottom of damping module is fixedly connected with rubber -tired support, the below of rubber -tired support is provided with track surface, and rubber -tired support walks on track surface through rubber -tired, the utility model reduces and avoided the vibration that produces because of the unevenness of track surface, has guaranteed the equipment steady operation, has prolonged equipment life, has improved equipment processing efficiency, has guaranteed the operation safety.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction technology for sewage treatment equipment, specifically to a vibration reduction device for the working bridge of the central drive scraper in the secondary sedimentation tank of a sewage treatment plant. Background Technology

[0002] In the wastewater treatment process, the centrally driven sludge scraper in the secondary sedimentation tank is used to scrape and collect sludge from the bottom of the tank, achieving sludge-water separation. Its working bridge moves in a circular motion on a track surface around the secondary sedimentation tank via rubber wheels. However, the vibration generated by the working bridge's rubber wheels running on an uneven track surface can lead to many problems such as mechanical damage, reduced process efficiency, and safety hazards.

[0003] The shortcomings of existing technology are: Vibration and shock to the equipment will accelerate the wear of key components such as drive shafts, bearings, and gears in the central drive unit, and shorten the equipment's lifespan.

[0004] Fluctuations in the load of the equipment can cause unstable motor current, leading to overheating or even burnout.

[0005] The vibration of the rubber rollers causes fluctuations in the pressure between the scraper blade and the bottom of the tank, which leads to increased sludge residue, reduced scraping efficiency, and affected effluent quality.

[0006] Long-term vibration of equipment may cause structural loosening, thus creating safety hazards. Summary of the Invention

[0007] This utility model addresses the above-mentioned problems by providing a vibration damping device for the working bridge of a central drive sludge scraper in a secondary sedimentation tank of a sewage treatment plant. Its purpose is to reduce and avoid vibrations caused by uneven track surfaces, ensure stable equipment operation, extend equipment service life, improve equipment processing efficiency, and guarantee operational safety.

[0008] To solve the above problems, the technical solution provided by this utility model is as follows: A vibration damping device for the working bridge of a centrally driven sludge scraper in a secondary sedimentation tank of a wastewater treatment plant includes a working bridge, a track surface, rubber wheels, rubber wheel supports, a central drive unit, a bottom sludge scraper, a vibration damping module, and a connecting module, wherein: The central drive device is located below one end of the working bridge; the bottom scraper is located below the middle of the working bridge and is rigidly connected to the working bridge; the connecting module is fixedly located at the end of the working bridge away from the central drive device; the connecting module is used to connect the working bridge and the shock absorption module; the shock absorption module is symmetrically arranged on both sides of the connecting module; the bottom of the shock absorption module is fixedly connected to the rubber wheel support; the rubber wheel is rotatably arranged in the rubber wheel grooves at both ends of the rubber wheel support; the track surface is provided below the rubber wheel support, and the rubber wheel support travels on the track surface via the rubber wheel.

[0009] Preferably, the connecting module includes a column, a fixed bracket, and a crossbeam; the crossbeam is fixedly disposed at the end of the bottom surface of the working bridge; the column is vertically fixedly disposed on both sides of the crossbeam; the fixed bracket is fixedly and symmetrically disposed on both sides of the upper part of the column; the fixed bracket is parallel to the rubber wheel support.

[0010] Preferably, the shock absorption module includes a shock absorption spring, a hydraulic damper, an upper flange, a short connecting shaft, a lower flange, and a long connecting shaft; the upper part of the hydraulic damper is fixedly connected to the upper flange and then fixedly connected to the fixed bracket via the short connecting shaft; the lower part of the hydraulic damper is fixedly connected to the lower flange and then fixedly connected to the rubber wheel support via the long connecting shaft; the upper and lower ends of the shock absorption spring are fixedly connected to the upper flange and the lower flange respectively, and are arranged vertically in parallel with the hydraulic damper via the upper flange and the lower flange.

[0011] Preferably, a horizontal limiting plate is provided on the long connecting shaft; the horizontal limiting plate is fixedly connected to the lower part of the column by a horizontally set limiting rod.

[0012] Preferably, when the shock-absorbing spring is in its ultimate compression state, the distance between the rubber wheel support and the crossbeam is not less than 80mm.

[0013] Preferably, the shock-absorbing spring (7) is made of 60Si2MnA silicon manganese steel or SUS304 stainless steel.

[0014] Preferably, the hydraulic damper (8) is model ACE MC25M, with a damping coefficient of 50 N·s / mm, a stroke of 50 mm, and a shaft diameter of 25 mm.

[0015] Preferably, the sealing material of the hydraulic damper (8) is fluororubber.

[0016] Preferably, the outer diameter of the upper flange (11) and the lower flange (13) are both 180 mm and the thickness is both 30 mm.

[0017] Compared with the prior art, this utility model has the following advantages: 1. Because this utility model uses shock-absorbing springs to provide elastic support, buffer the impact from uneven track surfaces, reduce instantaneous load, and uses hydraulic dampers to consume vibration energy and suppress spring rebound oscillation, it extends the service life of the equipment and ensures operational safety.

[0018] 2. Because the shock-absorbing structure adopted in this utility model improves the smoothness of the working bridge rotation, it improves the equipment processing efficiency and the quality of the effluent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the process layout of the shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant, which is a specific embodiment of this utility model. Figure 2 This is a partially enlarged schematic diagram of the shock absorption device according to a specific embodiment of this utility model.

[0020] The components include: 1. Working bridge, 2. Track surface, 3. Rubber tire, 4. Rubber tire support, 5. Central drive device, 6. Bottom scraper, 100. Shock absorption module, 200. Connecting module, 410. Rubber tire groove, 7. Shock absorption spring, 8. Hydraulic damper, 9. Column, 10. Fixed bracket, 11. Upper flange, 12. Short connecting shaft, 13. Lower flange, 14. Long connecting shaft, 15. Horizontal limit plate, 16. Limiting rod, 17. Crossbeam. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0022] This utility model application claims protection for a shock absorption device for the working bridge of a center-driven sludge scraper in a secondary sedimentation tank of a sewage treatment plant, such as... Figure 1 , 2 As shown, it includes a working bridge 1, a track surface 2, rubber wheels 3, rubber wheel supports 4, a central drive device 5, a pool bottom scraper 6, a shock absorption module 100, and a connecting module 200, wherein: A central drive device 5 is located below one end of the working bridge 1; a bottom scraper 6 is located below the middle of the working bridge 1 and is rigidly connected to the working bridge 1; a connecting module 200 is fixedly located at the end of the working bridge 1 away from the central drive device 5; the connecting module 200 is used to connect the working bridge 1 and the shock absorption module 100; the shock absorption module 100 is symmetrically arranged on both sides of the connecting module 200; the bottom of the shock absorption module 100 is fixedly connected to the rubber wheel support 4; the rubber wheel 3 is rotatably arranged in the rubber wheel grooves 410 at both ends of the rubber wheel support 4; a track surface 2 is provided below the rubber wheel support 4, and the rubber wheel support 4 travels on the track surface 2 via the rubber wheel 3.

[0023] It should be noted that when the working bridge 1 of the sludge scraper in the secondary sedimentation tank of the sewage treatment plant encounters unevenness on the track surface 2 via the rubber wheel 3, the rubber wheel 3 will vibrate, and the vibration will be transmitted to the central drive device 5 and the sludge scraper 6 at the bottom of the tank by the rubber wheel support 4 and the working bridge 1. Long-term vibration will cause mechanical damage, reduced sludge scraping efficiency, and safety hazards.

[0024] It should be noted that the connecting module 200 includes a column 9, a fixed bracket 10, and a crossbeam 17; the crossbeam 17 is fixedly installed at the end of the bottom surface of the working bridge 1; the column 9 is vertically fixedly installed on both sides of the crossbeam 17; the fixed bracket 10 is fixedly and symmetrically installed on both sides of the upper part of the column 9; the fixed bracket 10 is parallel to the rubber wheel support 4.

[0025] It should be noted that the shock absorption module 100 includes a shock absorption spring 7, a hydraulic damper 8, an upper flange 11, a short connecting shaft 12, a lower flange 13, and a long connecting shaft 14. The upper part of the hydraulic damper 8 is fixedly connected to the upper flange 11 and then fixedly connected to the fixed bracket 10 through the short connecting shaft 12. The lower part of the hydraulic damper 8 is fixedly connected to the lower flange 13 and then fixedly connected to the rubber wheel support 4 through the long connecting shaft 14. The upper and lower ends of the shock absorption spring 7 are fixedly connected to the upper flange 11 and the lower flange 13 respectively, and are arranged vertically in parallel with the hydraulic damper 8 through the upper flange 11, the lower flange 13, and the shock absorption spring 7 provides elastic support.

[0026] It should be further explained that, in order to limit the hydraulic damper 8 and the shock-absorbing spring 7 to only perform shock-absorbing movements in the vertical direction, a horizontal limiting plate 15 is provided on the long connecting shaft 14; the horizontal limiting plate 15 is fixedly connected to the lower part of the column 9 through a horizontally set limiting rod 16.

[0027] It should be further explained that this utility model designs a shock absorption device, using a shock absorption spring 7 to provide elastic support, buffer the impact from the unevenness of the track surface 2, and reduce the instantaneous load; using a hydraulic damper 8 to consume vibration energy and suppress the rebound oscillation of the shock absorption spring 7; and using a horizontal limiting plate 15 and a limiting rod 16 to restrict the shock absorption spring 7 and the hydraulic damper 8 to only perform vertical shock absorption movement, thereby improving the smoothness of the working bridge 1 when rotating.

[0028] It should be further explained that, in order to ensure the damping movement space of the hydraulic damper 8 and the shock absorber spring 7 in the vertical direction, when the shock absorber spring 7 is in the ultimate compression state, the distance between the rubber wheel support 4 and the crossbeam 17 shall not be less than 80mm.

[0029] In this specific embodiment, the shock-absorbing spring 7 is made of 60Si2MnA silicon manganese steel or SUS304 stainless steel.

[0030] In this specific embodiment, the hydraulic damper 8 is model ACE MC25M, with a damping coefficient of 50 N·s / mm, a stroke of 50 mm, and a shaft diameter of 25 mm.

[0031] In this specific embodiment, the sealing material of the hydraulic damper 8 is fluororubber.

[0032] In this specific embodiment, the outer diameter of both the upper flange 11 and the lower flange 13 is 180mm, and the thickness is 30mm.

[0033] It should be noted that when the rubber wheel 3 is impacted by the unevenness of the track surface 2, the impact vibration is transmitted to the damping spring 7 and the hydraulic damper 8 through the rubber wheel support 4 and the long connecting shaft 14. The damping spring 7 first buffers and absorbs the impact energy through its own elastic deformation, converting the impact energy into elastic potential energy, thereby reducing the instantaneous load. When the impact force disappears, the damping spring 7 releases the stored elastic potential energy and returns to its original shape. During the elastic extension and rebound of the damping spring 7, the hydraulic damper 8 uses internal oil... The flow generates a damping force opposite to the vibration direction of the damping spring 7. The magnitude of the damping force is adjustable to adapt to different operating conditions. It converts part of the energy absorbed by the damping spring 7 and the energy absorbed by itself into heat energy for dissipation, thereby suppressing the rapid extension, contraction and rebound oscillation of the damping spring 7 and effectively reducing the vibration amplitude transmitted to the working bridge 1. This stabilizes the contact pressure between the bottom scraper 6 and the bottom of the pool, improves the scraping efficiency, and reduces the damage of impact vibration to key components such as the transmission shaft, bearings, gears, and motor in the central drive device 5, ensuring the safe and stable operation of the scraping equipment.

[0034] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the disclosed individual embodiments. Therefore, the appended claims are hereby clearly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.

[0035] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0036] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0037] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A vibration damping device for the working bridge of a centrally driven sludge scraper in a secondary sedimentation tank of a wastewater treatment plant, characterized in that: It includes a working bridge (1), a track surface (2), rubber wheels (3), rubber wheel supports (4), a central drive device (5), a pool bottom scraper (6), a shock absorption module (100), and a connecting module (200), wherein: The central drive device (5) is located below one end of the working bridge (1); the bottom scraper (6) is located below the middle of the working bridge (1) and is rigidly connected to the working bridge (1); the connecting module (200) is fixedly located at one end of the working bridge (1) away from the central drive device (5); the connecting module (200) is used to connect the working bridge (1) and the shock absorption module (100); the shock absorption module (100) is symmetrically arranged on both sides of the connecting module (200); the bottom of the shock absorption module (100) is fixedly connected to the rubber wheel support (4); the rubber wheel (3) is rotatably arranged in the rubber wheel groove (410) at both ends of the rubber wheel support (4); the track surface (2) is provided below the rubber wheel support (4), and the rubber wheel support (4) travels on the track surface (2) through the rubber wheel (3).

2. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 1, characterized in that: The connecting module (200) includes a column (9), a fixed bracket (10), and a crossbeam (17); the crossbeam (17) is fixedly installed at the end of the bottom surface of the working bridge (1); the column (9) is vertically fixedly installed on both sides of the crossbeam (17); the fixed bracket (10) is fixedly and symmetrically installed on both sides of the upper part of the column (9); the fixed bracket (10) is parallel to the rubber wheel support (4).

3. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 2, characterized in that: The shock absorption module (100) includes a shock absorption spring (7), a hydraulic damper (8), an upper flange (11), a short connecting shaft (12), a lower flange (13), and a long connecting shaft (14). The upper part of the hydraulic damper (8) is fixedly connected to the upper flange (11) and then fixedly connected to the fixed bracket (10) through the short connecting shaft (12). The lower part of the hydraulic damper (8) is fixedly connected to the lower flange (13) and then fixedly connected to the rubber wheel support (4) through the long connecting shaft (14). The upper and lower ends of the shock absorption spring (7) are fixedly connected to the upper flange (11) and the lower flange (13) respectively, and are arranged vertically in parallel with the hydraulic damper (8) through the upper flange (11), the lower flange (13), and the hydraulic damper (8).

4. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 3, characterized in that: A horizontal limiting plate (15) is provided on the long connecting shaft (14); the horizontal limiting plate (15) is fixedly connected to the lower part of the column (9) through a horizontally set limiting rod (16).

5. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 4, characterized in that: When the shock-absorbing spring (7) is in the ultimate compression state, the distance between the rubber wheel support (4) and the crossbeam (17) is not less than 80mm.

6. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 5, characterized in that: The shock-absorbing spring (7) is made of 60Si2MnA silicon manganese steel or SUS304 stainless steel.

7. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 6, characterized in that: The hydraulic damper (8) is model ACE MC25M, with a damping coefficient of 50 N·s / mm, a stroke of 50 mm, and a shaft diameter of 25 mm.

8. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 7, characterized in that: The sealing material of the hydraulic damper (8) is fluororubber.

9. The shock absorption device for the working bridge of the central drive sludge scraper in the secondary sedimentation tank of a sewage treatment plant according to claim 8, characterized in that: The outer diameter of both the upper flange (11) and the lower flange (13) is 180 mm, and the thickness is 30 mm.

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