Sludge discharge device for sewage treatment

Abstract

The utility model relates to the technical field of suspended sludge scrapers, and discloses a sludge discharge device for sewage treatment, which comprises a bracket, a plurality of sludge scraping plates connected to the bottom of the bracket and connecting rods connected between the bracket and the sludge scraping plates, the connecting sleeve is arranged on the connecting rod, the moving block and the pressure spring are arranged in the connecting sleeve, and the mud scraping plate can move up and down through mutual matching of the moving block and the pressure spring, so that the phenomenon that the mud scraping plate violently collides with a hard block-shaped foreign matter or is clamped is avoided, the mud scraping plate can be effectively protected from being damaged, and the mud scraping plate is prevented from being damaged. According to the sludge discharging device, the adaptability of the sludge scraping plate to different foreign matters is improved, the service life of the whole sludge discharging device is prolonged, the whole sludge discharging device can still keep a normal operation state under such special conditions, and the continuity and the stability of the whole sewage treatment process are not influenced by the existence of individual foreign matters.

Description

Technical Field

[0001] The utility model relates to the technical field of suspended mud scrapers, in particular to a mud discharge device for sewage treatment. Background Art

[0002] The sludge discharge device is an indispensable part of the sewage treatment process. It is mainly used to effectively discharge the sludge formed after solid-liquid separation from the sewage sedimentation tank or sludge concentration tank. Both the driving scraper and the hanging scraper are commonly used sludge discharge devices. The working principle of the hanging scraper is to set one or more scraper plates in the sedimentation tank. These scraper plates are suspended under the driving device. With the operation of the driving device, they rotate along the bottom of the sedimentation tank to scrape and collect the sludge deposited on the bottom of the tank, and transport it to the outside of the tank through the mud collecting trough in the center of the bottom of the sedimentation tank.

[0003] The patent with announcement number CN218589760U currently discloses a suspended central drive scraper, and its technical solution includes: a driving device for providing power for the operation of the scraper; a transmission shaft, the top end of which is fixedly connected to the driving device, and the bottom end is provided with a deflector; scraper arms, symmetrically arranged on both sides of the transmission shaft, the scraper arms are rotatably connected to the transmission shaft, and the lower ends of the scraper arms are fixedly connected to a number of short scrapers arranged parallel to each other; adjustable cables, symmetrically arranged on both sides of the transmission shaft, one end of the adjustable cables is fixedly connected to the transmission shaft, and the other end is fixedly connected to the scraper arm, and is used to pull the scraper arm to move in the vertical direction; the above technical solution has the advantages that the scraper arm can be raised and lowered and no underwater bearings need to be provided.

[0004] Although the above device solves the problem that the existing suspended mud scraper cannot be lifted up and down and the underwater bearing needs to be provided with a complex sealing structure, the following problems still exist:

[0005] When the existing suspended scraper encounters hard and difficult-to-scrape foreign objects in the sedimentation tank, the existing scraper blade cannot move up and down and is not adaptable to the foreign objects. This will cause the scraper blade to constantly collide with the foreign objects during rotation, increasing the wear rate of the scraper blade, increasing the overall operating resistance of the suspended scraper, and even causing the machine to jam, seriously affecting the normal working efficiency and service life of the suspended scraper. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a mud discharge device for sewage treatment, which makes the suspended mud scraper have stronger adaptability.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mud discharge device for sewage treatment, comprising a bracket, a plurality of scraper plates connected to the bottom of the bracket and a connecting rod connected between the bracket and the scraper plates, a connecting sleeve is detachably connected to the middle part of the top surface of the scraper plates, a connecting hole corresponding to the position of the connecting rod is provided on the top surface of the connecting sleeve, a moving block is fixedly connected to the lower end of the connecting rod, a moving groove corresponding to the position of the moving block is provided in the connecting sleeve, a pressure spring is fixedly connected in the moving groove, and one end of the pressure spring is fixedly connected to the moving block.

[0008] Furthermore, two symmetrically arranged fixing plates are fixedly connected to the bottom of the connecting sleeve, the scraper plate is located between the two fixing plates, a fixing groove is provided on the side of the fixing plate away from the scraper plate, a bolt is slidably connected in the fixing groove, a fixing hole is provided on the surface of the scraper plate, one end of the bolt passes through the fixing hole and is connected to the other fixing plate, and is threadedly connected with a nut.

[0009] Furthermore, a plurality of limiting grooves are provided on the outer wall of the moving block.

[0010] Furthermore, a sealing plate is slidably connected to the bottom surface of the connecting sleeve, and the sealing plate is located between the connecting sleeve, the fixing plate and the scraper plate.

[0011] Furthermore, a buffer pad is slidably connected to the outer wall of the connecting rod.

[0012] Furthermore, a plurality of buffer blocks are fixedly connected to the surface of the buffer pad.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model arranges a connecting sleeve on the connecting rod, arranges a moving block and a pressure spring in the connecting sleeve, and utilizes the mutual cooperation of the moving block and the pressure spring to enable the scraper plate to move up and down, thereby avoiding the scraper plate from violently colliding or getting stuck with hard block-like foreign objects. This not only effectively protects the scraper plate from damage, improves the adaptability of the scraper plate to different foreign objects, and prolongs the service life of the entire mud discharge device, but also ensures that the mud discharge device as a whole can still maintain a normal operating state when encountering such special circumstances, and the continuity and stability of the entire sewage treatment process will not be affected by the presence of individual foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the scraper blade, connecting sleeve, connecting rod and fixing plate of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the scraper blade, connecting sleeve, fixing plate and bolts of the utility model;

[0018] Figure 4 It is a three-dimensional cross-sectional structural diagram of the movable block, the connecting sleeve and the sealing plate of the utility model;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the connecting sleeve, moving block, fixing plate and connecting rod of the utility model.

[0020] In the figure: 1. bracket; 2. scraper blade; 3. connecting rod; 4. connecting sleeve; 5. connecting hole; 6. moving block; 7. moving groove; 8. pressure spring; 9. fixing plate; 10. fixing groove; 11. bolt; 12. fixing hole; 13. nut; 14. limit groove; 15. sealing plate; 16. buffer pad; 17. buffer block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] like Figures 1 to 5 As shown, a mud discharge device for sewage treatment includes a bracket 1, a plurality of scraper plates 2 connected to the bottom of the bracket 1 and a connecting rod 3 connected between the bracket 1 and the scraper plates 2, a connecting sleeve 4 is detachably connected to the middle of the top surface of the scraper plates 2, a connecting hole 5 corresponding to the position of the connecting rod 3 is provided on the top surface of the connecting sleeve 4, a moving block 6 is fixedly connected to the lower end of the connecting rod 3, a moving groove 7 corresponding to the position of the moving block 6 is provided in the connecting sleeve 4, a pressure spring 8 is fixedly connected in the moving groove 7, and one end of the pressure spring 8 is fixedly connected to the moving block 6.

[0023] like Figure 1 As shown, the mud discharge device for sewage treatment in the utility model is similar to the existing suspended mud scraper structure, such as a suspended central drive mud scraper disclosed in the patent with announcement number CN218589760U. The main improvement of the utility model is to make the suspended mud scraper more adaptable, such as Figures 1 to 5 As shown, when a mud discharge device for sewage treatment in the utility model is in use, if there are hard lumps of foreign matter that are difficult to scrape off in the sedimentation tank, when the scraper plate 2 is blocked by the foreign matter, the scraper plate 2 will be squeezed by the foreign matter and tend to move upward. At this time, since the moving block 6 and the moving groove 7 are slidingly connected, and the pressure spring 8 is retractable, the scraper plate 2 can move upward, thereby avoiding a violent collision or jamming with the hard lumps of foreign matter, and then the scraper plate 2 is continuously rotated and scraped to gradually clean up the foreign matter; the design of the pressure spring 8 can rely on its own elastic restoring force to push the scraper plate 2 back to the original set working position after the scraper plate 2 bypasses the foreign matter, and continue to perform the scraping task.

[0024] By arranging a connecting sleeve 4 on the connecting rod 3, and arranging a moving block 6 and a pressure spring 8 in the connecting sleeve 4, the moving block 6 and the pressure spring 8 cooperate with each other, so that the scraper 2 can move up and down, thereby avoiding the scraper 2 from violently colliding or getting stuck with hard foreign objects. This not only can effectively protect the scraper 2 from damage, improve the adaptability of the scraper 2 to different foreign objects, and extend the service life of the entire mud discharge device, but also can ensure that the mud discharge device as a whole can still maintain a normal operating state when encountering such special circumstances, and will not affect the continuity and stability of the entire sewage treatment process due to the presence of individual foreign objects.

[0025] like Figures 2 to 5 As shown, the bottom of the connecting sleeve 4 is fixedly connected to two symmetrically arranged fixing plates 9, the scraper blade 2 is located between the two fixing plates 9, a fixing groove 10 is provided on the side of the fixing plate 9 away from the scraper blade 2, a bolt 11 is slidably connected in the fixing groove 10, a fixing hole 12 is provided on the surface of the scraper blade 2, one end of the bolt 11 passes through the fixing hole 12 and the other fixing plate 9, and is threadedly connected with a nut 13.

[0026] Specifically, by utilizing the mutual cooperation of the bolt 11 and the nut 13, the fixing plate 9 and the scraper blade 2 can be clamped, thereby providing fixation for the scraper blade 2 and enhancing the stability and adjustability of the installation of the scraper blade 2; at the same time, the design of the bolt 11 and the nut 13 can be quickly installed and disassembled. When the scraper blade 2 is subjected to a large impact or wear and needs to be replaced, it is only necessary to release the lock of the bolt 11 and the nut 13 to remove the scraper blade 2 from the connecting sleeve 4, which brings convenience to the installation and maintenance work of the staff.

[0027] like Figure 4 and Figure 5 As shown, a plurality of limiting grooves 14 are formed on the outer wall of the moving block 6 .

[0028] Specifically, the limit groove 14 can improve the stability of the moving block 6, so that the connecting sleeve 4 cannot rotate relative to the moving block 6, and can only move up and down along the moving block 6, thereby ensuring that the scraper blade 2 is more precise and controllable when it is obstructed, and there will be no unexpected lateral swing or rotation, thereby ensuring that the scraper blade 2 can always be perpendicular to the bottom of the sedimentation tank, effectively scraping away the sludge, while avoiding unnecessary side friction or collision with foreign objects, further reducing the abnormal wear of the scraper blade 2, and extending the overall service life of the mud discharge device.

[0029] like Figure 3 and Figure 4 As shown, a sealing plate 15 is slidably connected to the bottom surface of the connecting sleeve 4 , and the sealing plate 15 is located between the connecting sleeve 4 , the fixing plate 9 and the scraper blade 2 .

[0030] Specifically, the sealing plate 15 is made of a deformable material. During installation, the staff uses the connecting sleeve 4 and the scraper blade 2 to clamp the sealing plate 15. The sealing plate 15 can provide a seal for the movable groove 7, protect the pressure spring 8, prevent the pressure spring 8 from corrosion, and increase the service life of the pressure spring 8. At the same time, it also prevents sewage or other impurities from entering the movable groove 7 and affecting the matching accuracy of the movable block 6 and the movable groove 7, thereby ensuring the long-term stability of the lifting function of the scraper blade 2.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, a buffer pad 16 is slidably connected to the outer wall of the connecting rod 3 .

[0032] Specifically, the buffer pad 16 can provide a buffer for the collision of the scraper blade 2 with the bracket 1 when it moves up and down quickly, reduce the overall wear and noise of the mud discharge device, and extend the life of the equipment. At the same time, it can also absorb part of the impact force generated by the collision of the scraper blade 2 with foreign objects at the bottom of the sedimentation tank during the lifting process, thereby protecting the mud discharge device as a whole from damage.

[0033] like Figure 4 As shown, a plurality of buffer blocks 17 are fixedly connected to the surface of the buffer pad 16 .

[0034] Specifically, the buffer block 17 can further disperse and absorb the impact force generated by the scraper blade 2 during its up and down movement. Each buffer block 17, as an independent buffer unit, can play a shock-absorbing role when subjected to force, thereby jointly ensuring the stability of the overall operation of the mud discharge device and the integrity of the internal structure of the equipment; the distribution design of the buffer block 17 increases the buffer area and reduces the pressure per unit area, thereby improving the buffer efficiency and protection effect.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A mud discharge device for sewage treatment, comprising a bracket (1), a plurality of mud scraping plates (2) connected to the bottom of the bracket (1), and a connecting rod (3) connected between the bracket (1) and the mud scraping plates (2), characterized in that: A connecting sleeve (4) is detachably connected to the middle of the top surface of the scraper blade (2); a connecting hole (5) corresponding to the position of the connecting rod (3) is provided on the top surface of the connecting sleeve (4); a moving block (6) is fixedly connected to the lower end of the connecting rod (3); a moving groove (7) corresponding to the position of the moving block (6) is provided in the connecting sleeve (4); a pressure spring (8) is fixedly connected in the moving groove (7); one end of the pressure spring (8) is fixedly connected to the moving block (6).

2. A sludge discharge device for sewage treatment according to claim 1, characterized in that: The bottom of the connecting sleeve (4) is fixedly connected to two symmetrically arranged fixing plates (9), the scraper plate (2) is located between the two fixing plates (9), a fixing groove (10) is provided on the side of the fixing plate (9) away from the scraper plate (2), a bolt (11) is slidably connected in the fixing groove (10), a fixing hole (12) is provided on the surface of the scraper plate (2), one end of the bolt (11) passes through the fixing hole (12) and is connected to the other fixing plate (9), and a nut (13) is threadedly connected thereto.

3. A sludge discharge device for sewage treatment according to claim 1 or 2, characterized in that: The outer wall of the moving block (6) is provided with a plurality of limiting grooves (14).

4. A sludge discharge device for sewage treatment according to claim 2, characterized in that: The bottom surface of the connecting sleeve (4) is slidably connected with a sealing plate (15), and the sealing plate (15) is located between the connecting sleeve (4), the fixing plate (9) and the scraper plate (2).

5. A sludge discharge device for sewage treatment according to claim 1, 2 or 4, characterized in that: The outer wall of the connecting rod (3) is slidably connected with a buffer pad (16).

6. A sludge discharge device for sewage treatment according to claim 3, characterized in that: The outer wall of the connecting rod (3) is slidably connected with a buffer pad (16).

7. A sludge discharge device for sewage treatment according to claim 5, characterized in that: A plurality of buffer blocks (17) are fixedly connected to the surface of the buffer pad (16).

8. A sludge discharge device for sewage treatment according to claim 6, characterized in that: A plurality of buffer blocks (17) are fixedly connected to the surface of the buffer pad (16).

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