A center drive mud scraper with suspension

Abstract

The utility model discloses a kind of suspension type center drive mud scraper, including concrete seat and sedimentation tank, the top of the concrete seat is fixedly connected with the bottom of sedimentation tank, the top of the concrete seat is equipped with annular mud discharge groove, the inside fixed connection of the annular mud discharge groove has conical seat, the inside fixed connection of the sedimentation tank has two connecting rods, the one end fixed connection of two connecting rods has the vertical seat of same hollow structure, the inside fixed connection of the vertical seat has hydraulic oil cylinder and baffle, the bottom fixed connection of the baffle has speed reducer motor. The utility model is driven by speed reducer motor, transmission shaft, key sleeve and scraper rod to make circumferential motion with center as axis, the rubber scraper of the inclined angle setting at the bottom of scraper rod gathers sludge to center annular mud discharge groove, cooperate lifting assembly to be flexibly adjusted the height of rubber scraper, effectively avoid the problem that mud is not completely scraped, and prolong the use time of rubber scraper.

Description

Technical Field

[0001] This utility model relates to the field of sludge scraper technology, and in particular to a suspended center-drive sludge scraper. Background Technology

[0002] The sludge scraper is a key piece of equipment used in circular sedimentation tanks in water treatment projects. Its main function is to automatically collect and remove the sludge that settles at the bottom of the tank. It typically consists of a drive unit, a working bridge, scraper arms, and rubber scrapers. During operation, it pushes the sludge deposited at the bottom of the tank towards the central sludge collection pit, and finally discharges it out of the tank through the sludge discharge pipe, thus ensuring the continuous and stable operation of the sedimentation tank.

[0003] In existing technologies, the rubber scrapers gradually wear down due to friction with the bottom of the pool during rotation. This can easily lead to dead zones in the scraping process, causing some sludge to accumulate over time, potentially resulting in anaerobic fermentation and floating up, which can affect the quality of the effluent. Furthermore, directly replacing some of the worn rubber scrapers can cause unnecessary waste. Therefore, we propose a suspended center-driven sludge scraper to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a suspended center-driven sludge scraper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A suspended center-driven sludge scraper includes a concrete base and a sedimentation tank. The top of the concrete base is fixedly connected to the bottom of the sedimentation tank. An annular sludge discharge trough is formed on the top of the concrete base. A conical seat is fixedly connected inside the annular sludge discharge trough. Two connecting rods are fixedly connected inside the sedimentation tank. One end of the two connecting rods is fixedly connected to a hollow support. A hydraulic cylinder and a partition are fixedly connected inside the support. A reduction motor is fixedly connected to the bottom of the partition. A drive shaft is fixedly connected to the bottom of the output shaft of the reduction motor. Two key strips are fixedly connected to the outer wall of the drive shaft. A key sleeve is slidably fitted on the outer wall of the two key strips. Two scraper rods are fixedly connected to the outer wall of the key sleeve. Multiple rubber scrapers are evenly fixedly connected to the bottom of the two scraper rods. A lifting assembly is provided at the bottom of the support.

[0007] Preferably, the lifting assembly includes a push plate, the bottom of the output end of the hydraulic cylinder is fixedly connected to the top of the push plate, two vertical rods are fixedly connected to the bottom of the push plate, the bottom of the two vertical rods are respectively fixedly connected to the top of two scrapers, and steel wire ropes are fixedly connected between the vertical rods and the scrapers.

[0008] Preferably, a sludge discharge pipe is fixedly embedded in the outer wall of the concrete seat, and a sludge pump is fixedly connected to one end of the sludge discharge pipe. Under the negative pressure of the sludge pump, the sludge discharge pipe can pump the sludge collected in the annular sludge discharge trough out of the sedimentation tank.

[0009] Preferably, the support is fixedly connected to the top of the sedimentation tank by the same working bridge. The working bridge and the connecting rod together form a double support, which improves the support's ability to resist shaking and displacement.

[0010] Preferably, the bottom of the stand has a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor.

[0011] Preferably, the bottom of the support has two sliding holes, the inner walls of the two sliding holes are slidably connected to the outer walls of the two vertical rods respectively, the sliding holes provide stable guidance for the vertical movement of the vertical rods, and prevent the vertical rods from deviating during the movement, and the inner walls of the sliding holes are sealed.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution uses a geared motor to drive the transmission shaft, key sleeve, and scraper to make circular motion around the center axis. The rubber scraper with an angled bottom of the scraper collects the sludge into the central annular sludge discharge trough. With the lifting component, the height of the rubber scraper can be flexibly adjusted, effectively avoiding the problem of incomplete sludge scraping and extending the service life of the rubber scraper. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a suspended center-driven sludge scraper proposed in this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a suspended center-driven sludge scraper proposed in this utility model;

[0017] Figure 3 This utility model proposes a suspended center-driven sludge scraper. Figure 2 A magnified structural diagram of part A in the diagram;

[0018] Figure 4 This is a partial three-dimensional structural diagram of a suspended center-driven sludge scraper proposed in this utility model.

[0019] In the diagram: 1. Concrete seat; 2. Sedimentation tank; 3. Annular sludge discharge trough; 4. Conical seat; 5. Sludge discharge pipe; 6. Connecting rod; 7. Stand; 8. Working bridge; 9. Hydraulic cylinder; 10. Partition plate; 11. Gear motor; 12. Drive shaft; 13. Key bar; 14. Key sleeve; 15. Scraper rod; 16. Rubber scraper; 17. Push plate; 18. Vertical rod; 19. Steel wire rope. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-4 As shown, a suspended center-driven sludge scraper is disclosed, comprising a concrete base 1 and a sedimentation tank 2. The top of the concrete base 1 is fixedly connected to the bottom of the sedimentation tank 2. An annular sludge discharge trough 3 is provided on the top of the concrete base 1. The annular sludge discharge trough 3 receives the sludge collected by the scraper 15 and the rubber scraper 16. A conical seat 4 is fixedly connected inside the annular sludge discharge trough 3. A sludge discharge pipe 5 is fixedly embedded in the outer wall of the concrete base 1. A sludge discharge pipe 5 is fixedly connected to one end of the sludge discharge pipe 5. Under the negative pressure of the sludge pump, the sludge discharge pipe 5 can quickly pump the sludge collected in the annular sludge discharge trough 3 out of the sedimentation tank 2, thereby realizing timely cleaning of the sludge.

[0022] The sedimentation tank 2 has two fixed connecting rods 6 inside. One end of each connecting rod 6 is fixedly connected to a hollow support 7. The two connecting rods 6 prevent the support 7 from tilting or being damaged due to excessive force. The support 7 is fixedly connected to the top of the sedimentation tank 2 by a working bridge 8. The working bridge 8 and the connecting rods 6 together form a double support, which improves the support 7's ability to resist shaking and displacement. On the other hand, the working bridge 8 provides a convenient access for inspection and maintenance.

[0023] The support 7 is internally fixedly connected to a hydraulic cylinder 9 and a partition 10. A geared motor 11 is fixedly connected to the bottom of the partition 10. A circular hole is opened at the bottom of the support 7. The inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor 11. The contact surface between the circular hole and the output shaft of the geared motor 11 is sealed. A transmission shaft 12 is fixedly connected to the bottom of the output shaft of the geared motor 11. Two key bars 13 are fixedly connected to the outer wall of the transmission shaft 12. The same key sleeve 14 is slidably sleeved on the outer wall of the two key bars 13. The key bars 13 can ensure that the key sleeve 14 rotates when the transmission shaft 12 rotates, realizing the effective transmission of power. On the other hand, the sliding connection provides the possibility for the key sleeve 14 to move up and down with the scraper 15.

[0024] Two scraper rods 15 are fixedly connected to the outer wall of the key sleeve 14. Multiple rubber scrapers 16 are evenly fixedly connected to the bottom of the two scraper rods 15. The rubber scrapers 16 are made of rubber and have good flexibility and wear resistance. When they come into contact with the bottom of the sedimentation tank 2 to scrape sludge, they can fit tightly to the bottom of the tank and effectively scrape off the sludge.

[0025] The bottom of the support 7 is equipped with a lifting assembly, which includes a push plate 17. The bottom of the output end of the hydraulic cylinder 9 is fixedly connected to the top of the push plate 17. Two vertical rods 18 are fixedly connected to the bottom of the push plate 17. The bottom of the two vertical rods 18 are fixedly connected to the top of the two scraper rods 15 respectively. A steel wire rope 19 is fixedly connected between the vertical rods 18 and the scraper rods 15. The steel wire rope 19 effectively disperses the stress on the scraper rods 15 during lifting and rotation, preventing the scraper rods 15 from bending or breaking due to excessive force. Two sliding holes are opened at the bottom of the support 7. The inner walls of the two sliding holes are slidably connected to the outer walls of the two vertical rods 18 respectively. The drive shaft 12, key bar 13, key sleeve 14, scraper rods 15, push plate 17, vertical rods 18 and steel wire rope 19 are all treated with corrosion resistance (galvanized coating).

[0026] Working principle: When in use, the sewage to be treated enters the sedimentation tank 2 and flows slowly in the tank and settles. The suspended impurities and sludge in the sewage will gradually settle to the bottom of the sedimentation tank 2, preparing for the subsequent sludge scraping operation. When the sedimentation is complete and sludge scraping is required.

[0027] When the geared motor 11 starts to run, its output shaft drives the transmission shaft 12 at the bottom to rotate synchronously. Since the outer wall of the transmission shaft 12 is slidably connected to the key sleeve 14 through two key strips 13, the key sleeve 14 rotates together with the transmission shaft 12, thereby driving the two scraper rods 15 to make a circular motion around the transmission shaft 12. The multiple rubber scrapers 16 (set at an angle) at the bottom of the scraper rods 15 slide at the bottom of the sedimentation tank 2, and the sludge gathers into the annular sludge discharge trough 3 at the center.

[0028] Furthermore, the lifting assembly can flexibly adjust the height of the rubber scraper 16 to ensure the sludge scraping effect. When the hydraulic cylinder 9 inside the support 7 is activated, its output end pushes the bottom push plate 17 to move up and down. The two vertical rods 18 fixed at the bottom of the push plate 17 slide in the two sliding holes at the bottom of the support 7, thereby driving the two scraper rods 15 to rise and fall. The height of the rubber scraper 16 is also adjusted accordingly. At the same time, the steel wire rope 19 fixed between the vertical rods 18 and the scraper rods 15 plays an auxiliary reinforcement role to prevent the scraper rods 15 from bending or breaking during the lifting and rotation process, thus extending the service life of the equipment. When the sludge pump is activated, it generates negative pressure suction, which quickly extracts the sludge in the annular sludge discharge trough 3 out of the sedimentation tank 2 through the sludge discharge pipe 5, completing the entire sludge scraping and discharge process.

[0029] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the hydraulic cylinder 9 and the geared motor 11 to facilitate the control of the overall operation. The hydraulic cylinder 9 and the geared motor 11 are connected to an external power source via cables.

[0030] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suspended center-driven sludge scraper, comprising a concrete base (1) and a sedimentation tank (2), characterized in that, The top of the concrete base (1) is fixedly connected to the bottom of the sedimentation tank (2). An annular sludge discharge trough (3) is provided on the top of the concrete base (1). A conical seat (4) is fixedly connected inside the annular sludge discharge trough (3). Two connecting rods (6) are fixedly connected inside the sedimentation tank (2). One end of the two connecting rods (6) is fixedly connected to a hollow support (7). A hydraulic cylinder (9) and a partition (10) are fixedly connected inside the support (7). A geared motor (11) is fixedly connected to the bottom of the base. A transmission shaft (12) is fixedly connected to the bottom of the output shaft of the geared motor (11). Two key bars (13) are fixedly connected to the outer wall of the transmission shaft (12). The same key sleeve (14) is slidably sleeved on the outer wall of the two key bars (13). Two scraper rods (15) are fixedly connected to the outer wall of the key sleeve (14). Multiple rubber scrapers (16) are evenly fixedly connected to the bottom of the two scraper rods (15). A lifting assembly is provided at the bottom of the base (7).

2. A suspended center-driven sludge scraper according to claim 1, characterized in that, The lifting assembly includes a push plate (17), the bottom of the output end of the hydraulic cylinder (9) is fixedly connected to the top of the push plate (17), the bottom of the push plate (17) is fixedly connected to two vertical rods (18), the bottom of the two vertical rods (18) is fixedly connected to the top of two scrapers (15) respectively, and a steel wire rope (19) is fixedly connected between the vertical rods (18) and the scrapers (15).

3. A suspended center-driven sludge scraper according to claim 1, characterized in that, The outer wall of the concrete seat (1) is fixedly embedded with a sludge discharge pipe (5), and a sludge pump is fixedly connected to one end of the sludge discharge pipe (5).

4. A suspended center-driven sludge scraper according to claim 1, characterized in that, The support (7) is fixedly connected to the top of the sedimentation tank (2) by the same working bridge (8).

5. A suspended center-driven sludge scraper according to claim 1, characterized in that, The bottom of the stand (7) has a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor (11).

6. A suspended center-driven sludge scraper according to claim 2, characterized in that, The bottom of the stand (7) has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the two vertical rods (18).

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