A monorail mud scraper for underwater use

Abstract

The utility model relates to the field of water purification treatment discloses a single track mud scraper for underwater, including track, mobile scraping platform, driving motor, counterweight tensioner and spacing control device. The track is composed of pool bottom main track and pool wall side track, the mobile scraping platform includes mobile platform and scraper, the mobile platform slides on the main track through the limiting wheel, and the both ends of scraper are movable on the side track through the sliding wheel, the driving motor drives the mobile scraping platform through the transmission chain, the counterweight tensioner contains inclined bench and slidable counterweight sliding block, and the transmission chain tension is automatically adjusted, the spacing control device realizes accurate shutdown through contact component and control component. The utility model innovatively adopts the main side track cooperation orientation and double tensioning system, ensures the operation stability through three positioning, realizes the automatic tension adjustment of counterweight tensioner, provides the accurate manual adjustment of hand -operated tensioning device, and the equipment reliability and maintenance convenience are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of water purification and treatment, and in particular to a single-rail sludge scraper for underwater use. Background Technology

[0002] Sedimentation is a crucial step in water supply and wastewater treatment processes, and the sludge removal efficiency of sedimentation tanks directly affects the quality of the effluent. Currently, horizontal flow sedimentation tanks in domestic waterworks and wastewater treatment plants mainly use siphon-type sludge suction machines as sludge removal equipment. However, this equipment suffers from frequent maintenance, high energy consumption, and the removal of a large amount of water during the sludge removal process, which does not meet the requirements of energy conservation and environmental protection.

[0003] Another common sludge removal device is the chain scraper, widely used in sedimentation tanks, grit chambers, and other structures, primarily for the continuous scraping and removal of sediment from the bottom of the tank. Its working principle involves a drive motor that powers a sprocket, which in turn drives a chain arranged parallel underwater in a circular motion. The scrapers on the chain push the deposited sludge or grit into a collection trough. However, in actual operation, due to uneven water flow distribution at the bottom of the tank, the scrapers are prone to uneven resistance during movement, leading to an imbalance of forces at both ends. This results in scraper tilting, accelerated equipment wear, and other problems, severely affecting the stability and service life of the equipment.

[0004] Furthermore, traditional chain scrapers are complex in structure, have high installation and maintenance costs, and are poorly adaptable to different tank types, making it difficult to meet the high-efficiency sludge removal requirements under various working conditions. Therefore, there is an urgent need for a simple, stable, adaptable, and energy-efficient underwater scraper to improve the sludge removal efficiency of sedimentation tanks and reduce operation and maintenance time. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a single-rail sludge scraper for underwater applications.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A monorail sludge scraper for underwater use, comprising:

[0008] The track includes a main track installed at the bottom of the pool and side tracks installed on the pool walls;

[0009] The movable scraper includes a movable platform slidably mounted on the main track and a scraper movably mounted at the front end of the movable platform, with both ends of the scraper movably mounted on the side track;

[0010] A drive motor is connected to the movable scraper via a transmission chain;

[0011] A counterweight tensioning device, disposed on the transmission chain, is used to tension the transmission chain; and

[0012] A limit control device is installed above the end of the track.

[0013] Furthermore, the bottom of the moving platform is provided with limiting wheels, and the moving platform can be movably mounted on the main track through the limiting wheels; both ends of the scraper are provided with sliding wheels, and the scraper can be movably mounted on the side track through the sliding wheels.

[0014] Furthermore, the counterweight tensioning device includes:

[0015] An inclined platform is positioned above the track; and

[0016] A counterweight slider is slidably mounted on the inclined platform and abuts against the transmission chain to tighten the transmission chain.

[0017] Furthermore, the limit control device includes:

[0018] A contact component, disposed above the end of the track, is used to contact the movable scraper table; and

[0019] A control component, connected to the contact component and the drive motor, is used to control the drive motor to stop running when the contact component contacts the movable scraper.

[0020] Preferably, the counterweight slider is slidably mounted on the inclined platform and can slide along the inclined surface of the inclined platform.

[0021] Furthermore, guide wheel sets are provided at both ends of the track, including a driving guide wheel set and a driven guide wheel set; transmission chains are fixedly connected to the front and rear sides of the movable scraper, and the two transmission chains pass around the guide wheel sets at the two corresponding ends to connect to the drive motor to form a closed-loop transmission structure.

[0022] Furthermore, the tensioning device abuts against the transmission chain connecting the drive motor and the drive guide wheel assembly.

[0023] Furthermore, a hand-cranked tensioning device is provided above the driven guide wheel assembly, which is slidably connected to the driven guide wheel assembly and used to tighten the transmission chain.

[0024] Preferably, the drive motor, counterweight tensioning device, and limit control device are located above one end of the track, and a hand-cranked tensioning device and limit control device are located above the other end of the track.

[0025] Furthermore, the hand-cranked tensioning device includes a hand crank, a worm gear transmission mechanism, and a movable support; the hand crank is connected to the worm gear transmission mechanism to drive the movable support to move up and down, and the movable support is connected to a driven guide wheel assembly.

[0026] Preferably, the movable bracket is slidably mounted above the end of the track, and a driven guide wheel assembly is fixedly connected thereto; the movable bracket is connected to one of the guide wheels of the driven guide wheel assembly, and the worm gear transmission mechanism converts the rotational motion of the hand crank into the linear displacement of the movable bracket, thereby increasing the distance between the guide wheels of the driven guide wheel assembly, thereby adjusting the position of the driven guide wheel assembly to achieve precise tensioning of the transmission chain.

[0027] Furthermore, the scraper is movably mounted on the front end of the moving platform via a flipping device.

[0028] Furthermore, the side track is set on the bottom wall of the pool, and a sliding wheel is provided below the end of the scraper, the sliding wheel being movably set on the side track.

[0029] Preferably, the transmission chains on both sides of the moving scraper are provided with abutment rails.

[0030] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0031] ① This utility model adopts a design scheme of coordinated guidance of main track and side track. A triple positioning system is formed by the limiting wheel at the bottom of the moving platform and the sliding wheel at both ends of the scraper, which effectively ensures the stability and trajectory accuracy of the equipment when it is running underwater. It is suitable for complex underwater environments and can effectively prevent the equipment from deviating, ensuring the continuity and stability of the sludge scraping operation.

[0032] ②The counterweight tensioning device of this utility model adopts a unique combination design of inclined platform and counterweight slider, and realizes automatic adjustment of transmission chain tension through the principle of gravity component force; the counterweight slider can slide freely along the inclined surface of the inclined platform. When the transmission chain becomes loose due to wear or temperature change, the counterweight slider will automatically move down to maintain the best tension.

[0033] ③ This utility model uniquely incorporates a counterweight tensioning device and a hand-cranked tensioning device in the transmission chain and guide wheel assembly, respectively, forming a dual tension adjustment mechanism combining automatic and manual operation. The counterweight tensioning device achieves continuous automatic fine-tuning 24 hours a day through the self-weight of the slider on the inclined platform, ensuring that the transmission chain is always at the optimal working tension. The hand-cranked tensioning device achieves millimeter-level precise adjustment through a precision worm gear mechanism. This enhances the stability of the transmission system. Attached Figure Description

[0034] To more clearly illustrate the technical solution of this utility model, the drawings used in the 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 from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a monorail scraper installed in a sedimentation tank;

[0036] Figure 2 yes Figure 1 Enlarged view on the left;

[0037] Figure 3 yes Figure 1 Enlarged view on the right;

[0038] Figure 4 This is a front view of a monorail scraper installed in a sedimentation tank;

[0039] Figure 5 This is an enlarged diagram of A;

[0040] Figure 6 This is an enlarged diagram of B;

[0041] Figure 7 This is a schematic diagram of the counterweight tensioning device;

[0042] Figure 8 This is a schematic diagram of the structure of the drive motor connected to the torque limiter.

[0043] The accompanying figure is labeled as follows:

[0044] 1. Track; 101. Main track; 102. Side track; 2. Moving scraper; 201. Moving platform; 202. Scraper; 3. Drive motor; 4. Counterweight tensioning device; 401. Inclined frame; 402. Counterweight slider; 5. Limit control device; 501. Contact component; 502. Control component; 6. Transmission chain; 7. Limit wheel; 8. Sliding wheel; 9. Guide wheel assembly; 10. Hand-cranked tensioning device; 11. Torque limiter; 12. Reducer. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments without creative effort are within the scope of protection of this application.

[0046] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] Example 1

[0048] like Figure 1-7 As shown, this embodiment discloses a monorail sludge scraper for underwater use, including...

[0049] Track 1 includes a main track 101 installed at the bottom of the pool and a side track 102 installed on the pool wall;

[0050] The movable scraper 2 includes a movable platform 201 slidably mounted on the main rail 101 and a scraper 202 movably mounted at the front end of the movable platform 201, with both ends of the scraper 202 movably mounted on the side rail 102.

[0051] The drive motor 3 is connected to the movable scraper 2 via the transmission chain 6;

[0052] The counterweight tensioning device 4 is mounted on the transmission chain 6 to tension the transmission chain 6; and

[0053] Limit control device 5 is located above the end of track 1.

[0054] The bottom of the moving platform 201 is provided with a limiting wheel 7, and the moving platform 201 can be movably set on the main track 101 through the limiting wheel 7; the scraper 202 is provided with sliding wheels 8 at both ends, and the scraper 202 can be movably set on the side track 102 through the sliding wheels 8.

[0055] The counterweight tensioning device 4 includes:

[0056] Inclined platform 401 is positioned above track 1; and

[0057] The counterweight slider 402 is slidably mounted on the inclined platform 401 and abuts against the transmission chain 6 to tighten the transmission chain 6.

[0058] The side rail 102 is set on the bottom wall of the pool, and the scraper 202 is provided with a sliding wheel 8 below the end. The sliding wheel 8 can be movably set on the side rail 102.

[0059] When the machine starts working, the drive motor 3 starts and drives the moving scraper 2 to move linearly along the main track 101 through the transmission chain 6. At this time, the counterweight slider 402 of the counterweight tensioning device 4 drives the transmission chain 6 to automatically adjust its position on the inclined frame 401, always keeping the transmission chain 6 in the best working tension state, effectively preventing the transmission chain 6 from jamming due to slack.

[0060] When the moving scraper platform 2 moves forward, the scraper 202, driven by the moving platform 201, contacts the bottom of the pool and pushes the settled sludge into the sludge collection trough; the sliding wheels 8 at both ends of the scraper 202 roll along the side track 102 to maintain a stable contact angle between the scraper 202 and the bottom of the pool, ensuring uniform sludge scraping effect.

[0061] When the movable scraper 2 approaches the end of the track 1, the contact component 501 contacts the movable scraper 2, triggering the control component 502 to immediately cut off the power to the drive motor 3, achieving precise stopping. At this time, the scraper 202 is automatically lifted by the flipping device to avoid collision with the end structure.

[0062] After completing one work cycle, the system enters standby mode. Throughout the process, the guiding system consisting of the limit wheel 7 and the sliding wheel 8 ensures that the equipment always runs along the predetermined trajectory, with deviations controlled within the allowable range. The equipment can automatically repeat the above work process according to a preset program.

[0063] As one embodiment, the limit control device 5 includes:

[0064] A contact component 501 is disposed above the end of the track 1 for contacting the movable scraper 2; and

[0065] The control component 502 is connected to the contact component 501 and the drive motor 3, and is used to control the drive motor 3 to stop running when the contact component 501 contacts the moving scraper 2.

[0066] Specifically, the control component 502 is connected to the contact component 501 via a connecting line. The movable scraper 2 is provided with contact protrusions at the front and rear, and the contact protrusions are slightly longer than the front and rear ends of the movable scraper 2.

[0067] When the machine starts working, the drive motor 3 is powered on and starts, and drives the moving scraper 2 to move at a constant speed along the main track 101 through the transmission chain 6. The contact boss moves synchronously with the moving scraper 2 to prepare for subsequent limit triggering.

[0068] When the movable scraper 2 approaches the end of the track 1, the contact protrusion at the front end of the movable scraper 2 first contacts the connecting line of the limit control device 5. As the movable scraper 2 continues to move forward, the contact protrusion pushes the connecting line to generate displacement, and this mechanical displacement is transmitted to the control component 502 through the connecting line.

[0069] The displacement sensor inside the control unit 502 monitors the displacement of the connecting line in real time. When the displacement of the connecting line reaches the preset threshold (8-10mm), the control unit 502 cuts off the power supply to the drive motor 3, so that the moving scraper 2 stops completely within 0.3 seconds, ensuring accurate stopping position.

[0070] When the drive motor 3 rotates in reverse, the contact boss at the rear end of the moving scraper 2 disengages from the connecting wire, and the connecting wire returns to its initial position under the tension of the spring inside the control component 502, preparing for the next limit trigger.

[0071] Example 2

[0072] like Figure 1-7 As shown, this embodiment discloses a monorail sludge scraper for underwater use. As one embodiment, guide wheel sets 9 are provided at both ends of the track 1, including a driving guide wheel set and a driven guide wheel set; transmission chains 6 are fixedly connected to the front and rear sides of the movable scraper 2, and the two transmission chains 6 pass around the guide wheel sets 9 at the two corresponding ends and connect to the drive motor 3 to form a closed-loop transmission structure.

[0073] The counterweight tensioning device 4 abuts against the transmission chain 6 that connects the drive motor 3 and the drive guide wheel assembly.

[0074] A hand-cranked tensioning device 10 is provided above the driven guide wheel assembly. The hand-cranked tensioning device 10 is slidably connected to the driven guide wheel assembly and is used to tighten the transmission chain 6.

[0075] The hand-cranked tensioning device 10 includes a hand crank, a worm gear transmission mechanism, and a movable support; the hand crank drives the worm gear transmission mechanism to move the movable support up and down, and the movable support is connected to the driven guide wheel set.

[0076] When the transmission chain 6 naturally elongates due to long-term use, the operator rotates the hand crank of the hand-cranked tensioning device 10, which drives the moving bracket to move vertically through the worm gear transmission mechanism, thereby adjusting the position of the driven guide wheel group.

[0077] The movable support is slidably mounted above the end of the track 1, and a driven guide wheel assembly is fixedly connected to it. The movable support is connected to one of the guide wheels of the driven guide wheel assembly. The worm gear transmission mechanism converts the rotational motion of the hand crank into the linear displacement of the movable support, thereby increasing the distance between the guide wheels of the driven guide wheel assembly and adjusting the position of the driven guide wheel assembly to achieve precise tensioning of the transmission chain 6. This adjustment process can be carried out while the equipment is running without stopping the machine.

[0078] When it is necessary to replace the drive chain 6, first use the hand-cranked tensioning device 10 to adjust the driven guide wheel assembly to the lowest position to fully loosen the drive chain 6, so that the chain can be easily disassembled; after installing the new chain, reverse the operation of the hand-cranked tensioning device 10 to the standard tension value to complete the replacement operation.

[0079] Example 3

[0080] like Figure 1-8 As shown, this embodiment discloses a monorail sludge scraper for underwater use. As one embodiment, the scraper 202 is movably mounted on the front end of the moving platform 201 via a flipping device.

[0081] Specifically, the flipping device includes a four-bar linkage and a collision boss.

[0082] When the movable scraper 2 completes one sweep and approaches the end of the pool, the movable scraper 2 causes the collision boss of the flipping device to collide with the contact component 501. Under the action of the collision force, the collision boss drives the four-bar linkage to flip.

[0083] When the moving scraper 2 approaches the end of the pool, the collision boss first contacts the contact component 501 fixed at the end of the pool; the collision boss has an inclined surface, which can generate sufficient horizontal force to push the four-bar linkage to flip backward during the collision; the collision boss drives the four-bar linkage to lift and flip the connected scraper 202 from the working position. The entire flipping process does not require external power and is driven entirely by mechanical collision force.

[0084] In one embodiment, the drive motor 3 is connected to the reducer via a torque limiter, and the reducer drives the bearing connected to the transmission chain 6 via a drive rod, thereby controlling the tensile movement of the transmission chain 6.

[0085] The drive motor 3 is connected to the reducer 12 through the torque limiter 11 with a preset slip threshold. The output end of the reducer 12 drives the self-lubricating bearing through the cross drive rod to drive the transmission chain 6 to perform linear tensile motion. When the resistance suddenly exceeds the load, the torque limiter 11 performs mechanical slippage to cut off the power, and simultaneously triggers the PLC power failure alarm. After manual reset, the system automatically calibrates and resumes operation, thereby reducing the chain breakage rate.

[0086] Specifically, torque limiter 11 is a torque limiter with a digital display.

[0087] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A monorail sludge scraper for underwater use, characterized in that: include: The track (1) includes a main track (101) set at the bottom of the pool and a side track (102) set at the wall of the pool; The movable scraper (2) includes a movable platform (201) slidably disposed on the main track (101) and a scraper (202) movably disposed at the front end of the movable platform (201), the two ends of the scraper (202) being movably disposed on the side track (102); The drive motor (3) is connected to the movable scraper (2) via a transmission chain (6); A counterweight tensioning device (4) is disposed on the transmission chain (6) for tensioning the transmission chain (6); and A limit control device (5) is located above the end of the track (1).

2. The underwater monorail sludge scraper according to claim 1, characterized in that, The bottom of the moving platform (201) is provided with a limiting wheel (7), and the moving platform (201) can be movably set on the main track (101) through the limiting wheel (7); the scraper (202) is provided with sliding wheels (8) at both ends, and the scraper (202) can be movably set on the side track (102) through the sliding wheels (8).

3. The underwater monorail sludge scraper according to claim 1, characterized in that, The counterweight tensioning device (4) includes: An inclined platform (401) is disposed above the track (1); and The counterweight slider (402) is slidably mounted on the inclined platform (401) and abuts against the transmission chain (6) to tighten the transmission chain (6).

4. The underwater monorail sludge scraper according to claim 1, characterized in that, The limit control device (5) includes: A contact component (501) is disposed above the end of the track (1) for contacting the movable scraper (2); and A control unit (502), connected to the contact unit (501) and the drive motor (3), is used to control the drive motor (3) to stop running when the contact unit (501) contacts the moving scraper (2).

5. The monorail sludge scraper for underwater use according to claim 1, characterized in that, The track (1) is provided with guide wheel sets (9) at both ends, including a driving guide wheel set and a driven guide wheel set; the front and rear sides of the movable scraper (2) are respectively fixedly connected with transmission chains (6), and the two transmission chains (6) pass around the guide wheel sets (9) at the two corresponding ends and connect to the drive motor (3) to form a closed-loop transmission structure.

6. The underwater monorail sludge scraper according to claim 5, characterized in that, The tensioning device (4) abuts against the transmission chain (6) that connects the drive motor (3) and the drive guide wheel assembly.

7. The underwater monorail sludge scraper according to claim 5, characterized in that, A hand-cranked tensioning device (10) is provided above the driven guide wheel assembly. The hand-cranked tensioning device (10) is slidably connected to the driven guide wheel assembly and is used to tighten the transmission chain (6).

8. The underwater monorail sludge scraper according to claim 7, characterized in that, The hand-cranked tensioning device (10) includes a hand crank, a worm gear transmission mechanism, and a movable support; the hand crank is connected to the worm gear transmission mechanism to drive the movable support to move up and down, and the movable support is connected to the driven guide wheel group.

9. The underwater monorail sludge scraper according to claim 1, characterized in that, The scraper (202) is movably mounted on the front end of the mobile platform (201) via a flipping device.

10. The underwater monorail sludge scraper according to claim 2, characterized in that, The side rail (102) is set on the bottom wall of the pool, and a sliding wheel (8) is provided below the end of the scraper (202). The sliding wheel (8) can be movably set on the side rail (102).

Images