A closed sludge flight conveyor system

Abstract

The application relates to the sludge conveying technical field and provides a closed sludge scraper conveying system which comprises a groove body assembly and a chain transmission device. The top of the groove body assembly is provided with a feeding port, the bottom of the groove body assembly is provided with a discharging port, the inner side of the groove body assembly is divided into a conveying space and a cleaning space through a partition frame, and the conveying space is located above the cleaning space. The chain transmission device is provided with multiple groups of scraper mechanisms at equal intervals. The scraper mechanism comprises two scraper plate pieces which are arranged in an overturning mode. When the scraper mechanism is in the conveying space, the pushing surfaces of the two scraper plate pieces are arranged on the two opposite sides of the scraper mechanism. A pushing component is arranged at the transition of the conveying space and the cleaning space. After the scraper mechanism passes through the pushing component, the pushing surfaces of the two scraper plate pieces can be rotated to the same plane. The inner side of the cleaning space is provided with a scraper mechanism for scraping off the adhered materials and a high-pressure water washing device for flushing the scraper plate pieces. Therefore, the sludge on the scraper can be conveniently and fully flushed, and the occurrence of the adhered material caking can be reduced.

Description

Technical Field

[0001] This application relates to the field of sludge conveying technology, and in particular to a closed sludge scraper conveying system. Background Technology

[0002] Sludge scraper conveyors are devices used to transport sludge with high moisture content and high viscosity, and are commonly used in sewage treatment plants, sludge treatment stations, and other similar locations. Existing sludge scraper conveyors typically include a trough structure, scrapers, traction components, a drive unit, and a tensioning device. The scrapers are generally metal plates, fixed at certain intervals to traction components such as chains, belts, or wire ropes to form a scraper chain. The shape of the scrapers is adapted to the trough structure, allowing them to conform to the bottom of the trough to propel the sludge forward.

[0003] Sludge scraper conveyors are generally equipped with a high-pressure water washing system. This system can periodically wash the wall surface and scraper with material when the sludge scraper conveyor is stopped, or intermittently spray a small amount of clean water during the conveying process to wet the wall surface and form a water film, reducing the adhesion between sludge and the wall surface. This achieves both shutdown cleaning and online light cleaning functions, reducing the occurrence of sludge sticking to the wall.

[0004] However, for highly viscous sludge with a moisture content of 85% to 95%, its viscosity is extremely high and it easily adheres to the outer surface of the scraper. During the operation of the sludge scraper conveyor, the online slight cleaning function of the high-pressure water washing system alone is insufficient to prevent sludge adhesion. Over time, this will lead to the phenomenon of sticky material clumping, which in turn causes a sharp increase in the operating resistance of the sludge scraper conveyor and a sharp drop in conveying efficiency, which needs to be improved. Summary of the Invention

[0005] Based on this, this application provides a closed sludge scraper conveying system that can easily and thoroughly wash the sludge on the scraper, reducing the occurrence of material sticking and clumping.

[0006] The closed-loop sludge scraper conveying system provided in this application adopts the following technical solution:

[0007] A closed-loop sludge scraper conveying system includes a tank assembly and a chain drive device disposed inside the tank assembly. The system is characterized by: an inlet at the top of the tank assembly and an outlet at the bottom, with the inlet and outlet located at opposite ends of the tank assembly's extension direction; a partition frame is fixed inside the tank assembly, and the inner side of the tank assembly is divided by the partition frame to form a conveying space and a cleaning space, with the conveying space located above the cleaning space.

[0008] The chain drive device is provided with multiple scraping devices at equal intervals. The scraping device includes a support plate fixed to the chain drive device and a scraper mechanism that can be detachably fixed to the support plate. The scraper mechanism includes two scraper plates that are flipped. The scraper plates have a pushing surface that has been treated with anti-sticking. When the scraper mechanism is in the conveying space, the pushing surfaces of the two scraper plates are located on two opposite sides of the scraper mechanism.

[0009] The transition between the conveying space and the cleaning space is provided with a pusher component to force the scraper plate to rotate naturally. When the scraper mechanism enters the cleaning space and passes the pusher component, the scraper plate rotates to force the pushing surfaces of the two scraper plates to be on the same plane. The inner side of the cleaning space is provided with a scraper mechanism for scraping off the sticky material and a high-pressure water washing device for rinsing the scraper plate. The inner bottom wall of the tank assembly is provided with a drain outlet that communicates with the cleaning space.

[0010] By adopting the above technical solution, a partition frame is installed inside the tank assembly. The partition frame can divide the internal space of the tank assembly into a conveying space and a cleaning space. High-viscosity sludge enters the conveying space through the inlet. Each set of scraping devices can circulate circumferentially under the drive of the chain drive device. When the scraper mechanism is in the conveying space, the two scraper plates can be kept on opposite sides of the support plate. At this time, the pushing surface of the scraper plates can scrape the sludge and make the sludge move along the conveying space. When the sludge moves to the junction of the conveying space and the cleaning space, the sludge can leave the tank assembly through the outlet, thereby completing the sludge conveying. After the sludge leaves the tank assembly, the scraper device enters the cleaning space and passes through the pusher component. The pusher component forces the two scraper blades to rotate in opposite directions, so that the pushing surfaces of the two scraper blades are on the same plane. Then, the scraper blades can scrape off the sludge attached to the pushing surface through the scraper mechanism. After passing through the high-pressure water washing device, the pushing surface can be thoroughly rinsed, which greatly reduces the possibility of sludge adhesion and reduces the occurrence of clumps.

[0011] Optionally, the scraper mechanism also includes a fixed base plate, which is detachably fixed to the support plate; the side fixing frame of the fixed base plate is provided with two sets of side frame plates, and the two scraper pieces are rotatably installed on the two sets of side frame plates respectively. In the scraping state, the two scraper pieces are partially abutted and limited; each scraper piece is provided with a load-bearing column for cooperating with the pushing member to abut and rotate under force.

[0012] Two abutment parts are provided on the side of the fixed substrate away from the support plate. In the cleaning state, the scraper plate is rotated to partially abut against the abutment parts. At this time, the pushing surfaces of the two scraper plates are on the same plane. Each scraper plate is provided with an elastic retaining mechanism between itself and the fixed substrate to keep the scraper plate in its current state.

[0013] By adopting the above technical solution, this application allows two scraper blades to be rotatably mounted on a fixed base plate. When the scraping mechanism is in the conveying space, the two scraper blades can partially abut and be held on opposite sides of the support plate under the action of the elastic holding mechanism, so that the scraping mechanism can smoothly scrape the sludge and move it. After the scraper device passes the pushing member, the bearing column can abut against the pushing member and rotate under force, so that each scraper blade rotates to the position of abutting against the blocking part. At this time, the pushing surfaces of the two scraper blades can be held on the same plane under the action of the elastic holding mechanism, so as to remove the sludge on the pushing surface of the scraper blades and reduce the occurrence of material sticking and clumping.

[0014] Optionally, the elastic retaining mechanism includes a hinged sleeve rotatably mounted on the scraper plate and a hinged rod rotatably mounted on the fixed base plate, the hinged rod and the hinged sleeve being movably connected; a stiff spring is provided between the hinged rod and the hinged sleeve, the stiff spring being used to force the hinged rod and the hinged sleeve to move away from each other under normal conditions.

[0015] The scraper plate has a rotating shaft that is rotatably connected to the side frame plate, and the hinge rod has a hinge shaft that is hinged to the fixed base plate. In the scraping state, the elastic retaining mechanism is located on one side of the virtual connection line between the rotating shaft and the hinge shaft; in the cleaning state, the elastic retaining mechanism is located on the other side of the virtual connection line between the rotating shaft and the hinge shaft.

[0016] By adopting the above technical solution, the rigid spring in this application can normally force the hinge rod and the hinge sleeve to move away from each other. When the scraper mechanism is in the conveying space and in the scraping state, the elastic retaining mechanism is located on one side of the virtual connection line between the rotating shaft and the hinge shaft. At this time, the elastic force generated by the rigid spring can force the scraper plate to rotate outward and be held on the outside of the support plate, so as to facilitate scraping movement. When the scraper mechanism is in the cleaning space and in the cleaning state, the elastic retaining mechanism is located on the other side of the virtual connection line between the rotating shaft and the hinge shaft. At this time, the elastic force generated by the rigid spring can force the scraper plate to remain against the abutment, which helps to keep the pushing surfaces of the two scraper plates on the same plane, facilitating cleaning.

[0017] Optionally, the support plate has a sliding area, and a transverse plate is slidably installed inside the sliding area. Multiple hook parts are provided on the two opposite sides of the transverse plate. Multiple hook plates are rotatably installed on the bottom of the fixed base plate. Each hook plate is hooked and positioned with each hook part. The hook plates are equidistantly arranged. The side of the support plate is provided with a pressing mechanism to force the transverse plate to move laterally. After the transverse plate moves laterally, each hook part can smoothly disengage from each hook plate.

[0018] By adopting the above technical solution, the hook-joint and hook-joint plate configuration in this application helps improve the ease of disassembly and assembly between the scraper mechanism and the support plate, enabling convenient disassembly, maintenance, or replacement of the scraper mechanism. Specifically, during installation, by forcing the scraper mechanism to move closer to the support plate, each hook-joint plate, after abutting against its respective hook-joint, naturally deflects outward, ultimately hooking with its corresponding hook-joint, achieving stable installation and positioning of the scraper mechanism. Furthermore, during disassembly and assembly, by applying a pressing mechanism to force the transverse plate to move laterally, each hook-joint on the transverse plate can disengage from its corresponding hook-joint, allowing the scraper mechanism to be directly removed, making the operation simple and efficient.

[0019] Optionally, the pressing mechanism is provided in two sets, with the two sets of pressing mechanisms respectively located at both ends of the extension direction of the transverse plate;

[0020] The pressing mechanism includes a pressing rod, a movable pin, a guide sleeve, and a first elastic element. The guide sleeve is fixedly embedded in the inner side of the support plate and has an axially through rectangular groove. The pressing rod is movably inserted into the support plate, and the end of the pressing rod has a rectangular column portion that is movably inserted into the rectangular groove. The first elastic element is disposed between the pressing rod and the guide sleeve to force the pressing rod to be normally exposed on the transverse plate.

[0021] The movable pin is movably positioned between the pressing rod and the transverse plate. When the pressing rod of one set of pressing mechanisms is subjected to force and moves inward, it can drive the movable pin of that pressing mechanism to move axially to force the transverse plate to move, while the movable pin of the other set of pressing mechanisms can move laterally to avoid it.

[0022] By adopting the above technical solution, since sludge scraper conveyors are typically large in size, this application provides pressing mechanisms on both sides of the transverse plate. This allows operators to disassemble the scraper mechanism from both sides of the equipment, improving operational convenience and reducing time wasted by personnel movement. Specifically, the pressing rod is movably inserted into the support plate. The cooperation between the rectangular column and the rectangular groove restricts the rotation of the pressing rod, ensuring it can only move along its own axis. The first elastic element ensures the pressing rod is always partially exposed on the support plate. During operation, the operator forces one side of the pressing rod to move inward, causing it to abut against the movable pin and forcing the transverse plate to move. At this time, the movable pin of the other set of pressing mechanisms on the other side can move laterally to avoid this, ensuring smooth movement of the transverse plate and facilitating the smooth disassembly of the scraper mechanism.

[0023] Optionally, the bracket plate has an installation area for mounting a movable pin, the movable pin is laterally slidably disposed in the installation area, and the outer surface of the movable pin has a support surface for limiting rotation; a reset component is fixed on the outside of the bracket plate to force the movable pin to normally abut against the inner wall of one side of the installation area.

[0024] The transverse plate has a receiving groove on the side near the movable pin. The groove opening has a linkage step. In the initial state, the end of the movable pin away from the pressing rod is engaged with the linkage step. When the movable pin moves laterally, it can enter the receiving groove. The receiving groove is equipped with a second elastic element, which is used to force the movable pin to normally abut against the guide sleeve.

[0025] The movable pin has an insertion port at one end near the pressing rod. The rectangular part is inserted into the insertion port. In the initial state, the first elastic element can force the rectangular part to be normally located outside the insertion port. When the pressing rod is subjected to force and moves inward, the rectangular part is matched and inserted into the insertion port to limit the lateral movement of the movable pin.

[0026] By adopting the above technical solution, the movable pin is laterally slidably installed in the installation area. Under the action of the reset component, the movable pin normally abuts against the inner wall of one side of the installation area, and the end of the movable pin near the transverse plate is always in contact with the linkage step of the receiving groove. During operation, the operator forces the pressing rod on one side to move inward. The rectangular column at the end of the pressing rod can enter the insertion port of the movable pin, thereby restricting the lateral movement of the movable pin. As the pressing rod continues to move inward, the rectangular column can eventually abut against the inner end face of the insertion port. At this time, the pressing rod can push the movable pin to move together, thereby driving the transverse plate to move laterally, so that each hook part can smoothly disengage from the hook plate. It can be understood that since the pressing rod and the movable pin in the other pressing mechanism are normally separated, when the transverse plate is subjected to force, it can force the movable pin on the other side to move laterally to avoid it. As the transverse plate moves, the movable pin can gradually enter the receiving groove, without affecting the disassembly process of the scraper mechanism.

[0027] Optionally, the reset assembly includes a spring seat fixed to the side of the bracket plate, a reset baffle movably inserted into the spring seat, and a third elastic member disposed between the reset baffle and the spring seat. The third elastic member is used to force the reset baffle to normally abut against the side of the movable pin.

[0028] By adopting the above technical solution, the third spring can always generate an elastic force acting on the reset baffle, thereby forcing the reset baffle to abut against the movable pin and forcing the movable pin to press against the inner wall of one side of the installation area, maintaining the matching contact between the end of the movable pin and the linkage step.

[0029] Optionally, the scraper blade has an extension on its side, with one side of the extension flush with the push surface; when the two scraper blades are rotated until the push surfaces are on the same plane, the two extensions abut against each other and cover the inner fixed base plate and support plate.

[0030] By adopting the above technical solution and setting the extension, when the scraper pieces move into the cleaning space and are automatically flipped by the pusher, the extensions of the two scraper pieces can rotate to a position where they abut against each other, thereby blocking the inner fixed base plate and support plate. This reduces the possibility of sludge entering the inner side and adhering to the fixed base plate or support plate when the scraper pieces are subsequently rinsed, which is beneficial to the normal use of the scraper device and maintaining a good service life.

[0031] Optionally, the scraper mechanism includes a scraper seat fixed to the inner wall of the tank assembly and a flexible scraper detachably fixed to the scraper seat, the flexible scraper being located on the moving path of the scraper plate.

[0032] By adopting the above technical solution, after the scraper plate moves into the cleaning space and is automatically flipped by the pusher component, as the scraper plate continues to move, the flexible scraper can abut against the pushing surface of the scraper plate and scrape off the attached sludge, effectively reducing the occurrence of sludge adhesion and sticking.

[0033] Optionally, the closed sludge scraper conveying system also includes a brush roller mechanism located inside the cleaning space. The brush roller mechanism includes a brush roller seat fixed to the inner wall of the tank assembly and a brush roller rotatably mounted on the brush roller seat. A soft brush is sleeved on the outer periphery of the brush roller, and the soft brush is located on the moving path of the scraper plate.

[0034] By adopting the above technical solution, after the scraper frame is automatically washed by the high-pressure water washing device, the pushing surface of the scraper can be wiped away by the soft brush roller, which helps to keep the pushing surface of the scraper dry and clean, and further reduces the occurrence of sludge adhesion.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. When the scraper mechanism is in the conveying space, the two scraper blades can be kept on opposite sides of the support plate. At this time, the pushing surface of the scraper blades can scrape the sludge and make the sludge move along the conveying space. When the sludge moves to the junction of the conveying space and the cleaning space, the sludge can leave the tank assembly through the discharge port, thereby completing the sludge conveying.

[0037] 2. After the sludge leaves the tank assembly, the scraper device enters the cleaning space and passes through the pusher component. The pusher component can force the two scraper blades to rotate in opposite directions, so that the pushing surfaces of the two scraper blades are on the same plane. Then, the scraper blades can scrape off the sludge attached to the pushing surface through the scraper mechanism. After passing through the high-pressure water washing device, the pushing surface can be thoroughly rinsed, which greatly reduces the possibility of sludge adhesion and reduces the occurrence of clumps.

[0038] 3. The hook-and-hook plate combination allows for a detachable connection between the scraper mechanism and the support plate, which improves the ease of assembly and disassembly between the scraper mechanism and the support plate, and facilitates the disassembly, maintenance or replacement of the scraper mechanism. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0040] Figure 2 This is a schematic diagram of the internal structure of the tank assembly in this embodiment. The scraping device is not shown in the diagram.

[0041] Figure 3 This is a schematic diagram of the scraping device in the conveying state in this embodiment;

[0042] Figure 4 This is a schematic diagram of the cooperation structure between the scraper mechanism and the support plate in this embodiment;

[0043] Figure 5 This is a partial structural diagram of the support plate in this embodiment, mainly illustrating the specific structure of the pressing mechanism;

[0044] Figure 6 This is a partial cross-sectional schematic diagram of the support plate in this embodiment, which mainly illustrates the specific cooperation relationship of the various components of the pressing mechanism;

[0045] Figure 7 This is a schematic diagram of the movable pin in this embodiment;

[0046] Figure 8 yes Figure 6 Enlarged view of point A in the middle;

[0047] Figure 9 This is a partial structural schematic diagram of the scraper component in this embodiment;

[0048] Figure 10 This is a schematic diagram of the internal structure of the tank assembly in this embodiment, mainly showing the structure of the jacking component, the scraper mechanism and the brush roller mechanism;

[0049] Figure 11 This is a schematic diagram of the scraping device in the cleaning state in this embodiment;

[0050] Figure 12 This is a partial structural diagram of the scraping mechanism in this embodiment, which mainly illustrates the structural principle of the elastic holding mechanism.

[0051] Explanation of reference numerals in the attached drawings: 1. Tank assembly; 11. Baffle frame; 12. Conveying space; 13. Cleaning space; 14. Inlet; 15. Outlet; 16. Drainage outlet; 17. Pushing component;

[0052] 2. Chain drive device; 3. Support plate; 31. Sliding area; 32. Transverse plate; 321. Hook connection; 322. Receiving groove; 323. Linkage step; 33. Guide groove; 34. Moving area; 35. Installation area; 36. Connecting groove;

[0053] 4. Pressing mechanism; 41. Pressing rod; 411. Rectangular column; 412. Side end plate; 42. Movable pin; 421. Support surface; 422. Insertion port; 43. Guide sleeve; 431. Rectangular groove; 44. First elastic element; 45. Reset assembly; 451. Spring seat; 452. Reset baffle; 453. Third elastic element;

[0054] 5. Scraper mechanism; 51. Fixed base plate; 511. Hook plate; 512. Guide column; 513. Side frame plate; 514. Blocking part; 52. Scraper piece; 521. Pushing surface; 522. Main plate part; 523. Support part; 524. Extension part; 525. Rotating shaft part; 526. Support column;

[0055] 6. Elastic retaining mechanism; 61. Hinge sleeve; 62. Hinge rod; 621. Hinge shaft; 7. Scraper mechanism; 71. Scraper seat; 72. Flexible scraper; 8. Brush roller mechanism; 81. Brush roller seat; 82. Brush roller. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1 - Appendix Figure 12 This application will be described in further detail.

[0057] This application discloses a closed-loop sludge scraper conveying system.

[0058] Reference Figure 1 , Figure 2A closed-loop sludge scraper conveying system includes a tank assembly 1 and a chain drive device 2 disposed inside the tank assembly 1. A partition frame 11 is fixed inside the tank assembly 1, dividing the tank assembly 1 into a conveying space 12 and a cleaning space 13. The conveying space 12 and the cleaning space 13 are connected end-to-end, with the conveying space 12 located above the cleaning space 13. An inlet 14 is provided at the top of the tank assembly 1, communicating with the conveying space 12. An outlet 15 is provided at the bottom of the tank assembly 1, communicating with the cleaning space 13. It should be noted that the inlet 14 and the outlet 15 are located at opposite ends of the extension direction of the tank assembly 1.

[0059] Chain drive device 2 is equipped with multiple sets of scraper devices at equal intervals, as shown in the reference. Figure 3 The scraping device includes a support plate 3 and a scraper mechanism 5. The support plate 3 is fixedly connected to the chain drive device 2, while the scraper mechanism 5 is detachably fixed to the support plate 3. The scraper mechanism 5 includes a fixed base plate 51 and two scraper blades 52 rotatably mounted on the fixed base plate 51. The fixed base plate 51 and the support plate 3 are detachably fixed. In the installed state, both sides of the scraper blades 52 in the extension direction can fit against the two opposite inner walls of the tank assembly 1.

[0060] Specific reference Figure 4 A fixed base plate 51 is rotatably mounted with multiple hook plates 511. All hook plates 511 are divided into two groups and are spaced apart on the bottom surface of the fixed base plate 51. Each hook plate 511 is provided with a torsion spring (not shown in the figure) at the rotatable connection between itself and the fixed base plate 51. The torsion spring can force the hook plate 511 to rotate normally to a vertical state. The support plate 3 is provided with a sliding area 31 that runs through both sides. The sliding area 31 is located in the middle of the support plate 3. A transverse plate 32 is slidably mounted inside the sliding area 31. The moving direction of the transverse plate 32 is the same as the extension direction of the support plate 3. Hook parts 321 are provided on the two opposite sides of the transverse plate 32. The number of hook parts 321 on one side can be equal to the number of hook plates 511 in one group. Each hook plate 511 is equidistantly arranged along the extension direction of the transverse plate 32. Each hook plate 511 can hook with the corresponding hook part 321.

[0061] It should be noted that multiple guide posts 512 are fixed to the bottom of the fixed base plate 51, and guide grooves 33 are provided on the top surface of the support plate 3. When the scraper mechanism 5 is installed, by forcing the fixed base plate 51 to move closer to the support plate 3, each guide post 512 can be inserted into each guide groove 33, thereby restricting the lateral flipping of the fixed base plate 51. Then, as the fixed base plate 51 continues to move closer to the support plate 3, each hook plate 511 can abut against each hook part 321 and naturally deflect outward. After the end of the hook plate 511 moves to below the hook part 321, each hook plate 511 can cooperate with each hook part 321 for hooking and limiting under the torsion of the torsion spring, thereby achieving rapid positioning.

[0062] The side of the support plate 3 is provided with a pressing mechanism 4. The pressing mechanism 4 can force the transverse plate 32 to move laterally, thereby allowing each hook part 321 to smoothly disengage from each hook plate 511. It should be noted that in this embodiment, there are two sets of pressing mechanisms 4, and the two sets of pressing mechanisms 4 are located at both ends of the extension direction of the transverse plate 32.

[0063] Reference Figure 5 The pressing mechanism 4 includes a pressing rod 41, a movable pin 42, a guide sleeve 43, and a first elastic element 44. The support plate 3 has two through-flow movable areas 34. It can be understood that there are two sets of pressing mechanisms 4, and therefore two movable areas 34. The two movable areas 34 are located on opposite sides of the sliding area 31. The guide sleeve 43 is fixed to the inner wall of the movable area 34 near the sliding area 31 by fasteners. (Refer to...) Figure 6 The guide sleeve 43 has an axially through rectangular groove 431.

[0064] Reference Figure 5 , Figure 6 The pressing rod 41 is movably inserted into the side end face of the support plate 3, and the pressing rod 41 is partially inserted into the inner side of the movable area 34; one end of the pressing rod 41 is provided with a rectangular column part 411, the cross-sectional shape of the rectangular column part 411 is adapted to the cross-sectional shape of the rectangular groove 431, so that the rectangular column part 411 can be matched and inserted into the rectangular groove 431 to restrict the circumferential rotation of the pressing rod 41, so that the pressing rod 41 can only move along its own axis.

[0065] The outer circumferential surface of the pressing column rod 41 is provided with an integrally formed side end platform 412, which is located at the connection position between the rectangular column part 411 and the pressing column rod 41. The first elastic member 44 is sleeved on the rectangular column part 411 and located in the movable area 34. One end of the first elastic member 44 abuts against the side end platform 412, and the other end abuts against the guide sleeve 43. The first elastic member 44 can always generate an elastic force acting on the side end platform 412, thereby forcing the side end platform 412 to normally abut against the side of the movable area 34 away from the sliding area 31. At this time, the end of the pressing column rod 41 away from the rectangular column part 411 can be exposed on the bracket plate 3.

[0066] Reference Figure 6 The support plate 3 also has an installation area 35 on its side, which is located between the movable area 34 and the sliding area 31, and both the movable area 34 and the sliding area 31 are connected to the installation area 35; the movable pin 42 is installed in the installation area 35 and can be located between the pressing rod 41 and the transverse plate 32. (See also...) Figure 7 In this embodiment, the movable pin 42 is cylindrical, and the outer peripheral surface of the movable pin 42 is formed by cutting a support surface 421. The support surface 421 can match and abut against one side of the inner wall of the mounting area 35 to restrict the circumferential rotation of the movable pin 42, so that the movable pin 42 can only move along its own axis. In addition, the outer diameter of the movable pin 42 is smaller than the cross-sectional width of the mounting area 35, so that the movable pin 42 can also slide laterally within the mounting area 35.

[0067] Back Figure 6 A reset assembly 45 is provided on the outer side of the support plate 3; see details below. Figure 8 The reset assembly 45 includes a spring seat 451 fixed to the side of the bracket plate 3, a reset baffle 452 movably inserted into the spring seat 451, and a third elastic member 453 disposed between the reset baffle 452 and the spring seat 451. The third elastic member 453 can always generate an elastic force acting on the reset baffle 452. The side of the bracket plate 3 is provided with a connecting groove 36 that communicates with the installation area 35. Under the elastic force of the third elastic member 453, the reset baffle 452 can partially extend into the connecting groove 36 and abut against the movable pin 42, thereby forcing the movable pin 42 to abut against the inner wall of one side of the installation area 35.

[0068] Back Figure 6The transverse plate 32 has a receiving groove 322 on its side near the movable pin 42. The shape of the receiving groove 322 is adapted to the shape of the movable pin 42. A second elastic element (not shown in the figure) is provided in the receiving groove 322. One end of the second elastic element abuts against the inner wall of the receiving groove 322, and the other end abuts against the movable pin 42. It can always generate an elastic force acting on the movable pin 42, thereby forcing the movable pin 42 to abut against the guide sleeve 43 in a normal state. A linkage step 323 is provided at the opening of the receiving groove 322. In the initial state, that is, when the reset component 45 forces the movable pin 42 against the inner wall of one side of the installation area 35, the end of the movable pin 42 away from the pressing rod 41 can cooperate with the linkage step 323 to abut. At this time, the receiving groove 322 and the movable pin 42 are eccentrically set.

[0069] In addition, refer to Figure 6 , Figure 8 The movable pin 42 has an insertion port 422 at one end near the pressing rod 41. The cross-sectional shape of the insertion port 422 is equal to that of the rectangular column portion 411. Under the elastic force of the first elastic member 44, the pressing rod 41 normally moves outward, so that the rectangular column portion 411 is normally located outside the insertion port 422. When the pressing rod 41 moves inward, the rectangular column portion 411 can enter the insertion port 422, thereby restricting the lateral movement of the movable pin 42.

[0070] Based on this, when the operator moves the pressing rod 41 of one side of the pressing mechanism 4 inward, the rectangular column portion 411 at the end of the pressing rod 41 can match and enter the insertion port 422 of the movable pin 42; as the pressing rod 41 continues to move inward, the rectangular column portion 411 can finally abut against the inner end face of the insertion port 422. At this time, the pressing rod 41 can push the movable pin 42 to move together, thereby driving the transverse plate 32 to move laterally, so that each hook portion 321 can smoothly disengage from the hook plate 511. It can be understood that since the pressing rod 41 and the movable pin 42 in the other set of pressing mechanisms 4 are normally separated, when the transverse plate 32 is moved by force, it can force the movable pin 42 on the other side to move laterally to avoid it. As the transverse plate 32 moves, the movable pin 42 can gradually enter the receiving groove 322, without affecting the disassembly process of the scraper mechanism 5.

[0071] Back Figure 3 The side mounting bracket of the fixed substrate 51 is provided with two sets of side bracket plates 513, and the side of the scraper plate 52 is provided with an integrally formed rotating shaft part 525. The two scraper plates 52 are respectively rotatably mounted on the two sets of side bracket plates 513 through the rotating shaft part 525. (See also...) Figure 9In this embodiment, the scraper component 52 includes a main board portion 522 and a support portion 523 integrally formed with the main board portion 522. The main board portion 522 and the support portion 523 are arranged perpendicularly to each other, and the length of the main board portion 522 is greater than the length of the support portion 523. Each main board portion 522 has a push surface 521 that has been treated with anti-sticking. When the scraper mechanism 5 is located in the conveying space 12, the push surfaces 521 of the two scraper components 52 can be located on two opposite sides of the scraper mechanism 5, and at this time the support portions 523 of the two scraper components 52 can match and abut against the limit.

[0072] It should be noted that each scraper plate 52 has a support column 526 on its side. The support column 526 is spaced apart from the rotating shaft 525, and the support column 526 can extend to a position close to the inner wall of the tank assembly 1. (See also...) Figure 10 A pusher component 17 is fixedly installed on the inner wall of the tank assembly 1. The pusher component 17 is located at the transition between the conveying space 12 and the cleaning space 13, and can be positioned on the moving path of the support column 526. When the scraper mechanism 5 enters the cleaning space 13 under the drive of the chain drive device 2 and passes the pusher component 17, the support column 526 can abut against the pusher component 17 and automatically flip under force, ultimately making the pushing surfaces 521 of the two scraper plates 52 on the same plane. At this time, the scraper mechanism 5 is in the cleaning state. It can be understood that there are two transition points between the conveying space 12 and the cleaning space 13, and pusher components 17 need to be installed at both points so that the two scraper plates 52 can automatically reset when the scraper mechanism 5 returns to the conveying space 12.

[0073] Reference Figure 11 Two abutment portions 514 are provided on the side of the fixed substrate 51 away from the support plate 3. The two abutment portions 514 are spaced apart, and each abutment portion 514 is integrally formed with the fixed substrate 51. After the scraper mechanism 5 passes the pusher member 17, the scraper plate 52 can rotate to the position where the support portion 523 and the abutment portion 514 abut against each other, so that the pushing surfaces 521 of the two scraper plate 52 remain on the same plane. In addition, the scraper plate 52 also includes an extension portion 524 integrally formed with the support portion 523. The extension portion 524 and the main plate portion 522 are respectively provided on two opposite sides of the support portion 523, and one side of the extension portion 524 is flush with the pushing surface 521. When the two scraper plate 52 rotate to the point where the pushing surfaces 521 are on the same plane, the two extension portions 524 can abut against each other, thereby blocking the inner fixed substrate 51 and support plate 3, reducing the possibility of sludge adhering to the fixed substrate 51 or support plate 3.

[0074] Reference Figure 12Each scraper plate 52 is provided with an elastic retaining mechanism 6 between itself and the fixed base plate 51. The elastic retaining mechanism 6 can keep the scraper mechanism 5 in its current state. Specifically, the elastic retaining mechanism 6 includes a hinge sleeve 61 and a hinge rod 62. The hinge sleeve 61 is rotatably mounted on the load-bearing column 526 on the scraper plate 52, while the hinge rod 62 is movably inserted into the hinge sleeve 61. The end of the hinge rod 62 is provided with a hinge shaft 621, and the hinge rod 62 is hinged to the fixed base plate 51 through the hinge shaft 621. A stiff spring (not shown in the figure) is also provided between the hinge sleeve 61 and the hinge rod 62. The stiff spring can always generate a force acting on the hinge rod 62 and the hinge sleeve 61, thereby forcing the hinge rod 62 and the hinge sleeve 61 to move away from each other under normal conditions.

[0075] Reference Figure 3 , Figure 11 It should be noted that when the scraper mechanism 5 is located in the conveying space 12 and in the scraping state, the elastic retaining mechanism 6 can be located on one side of the virtual connection line between the rotating shaft 525 and the hinge shaft 621. At this time, the elastic force generated by the hard spring can force the scraper plate 52 to rotate outward and be held on the outside of the support plate 3, so as to facilitate the scraping movement of the scraper mechanism 5. In addition, when the scraper mechanism 5 is located in the cleaning space 13 and in the cleaning state, the elastic retaining mechanism 6 can be located on the other side of the virtual connection line between the rotating shaft 525 and the hinge shaft 621. At this time, the elastic force generated by the hard spring can force the support part 523 to remain against the abutment part 514, which is conducive to keeping the pushing surfaces 521 of the two scraper plates 52 on the same plane, which is convenient for cleaning.

[0076] Back Figure 10 The cleaning space 13 is equipped with a scraper mechanism 7 for scraping off the sticky material and a high-pressure water washing device (not shown in the figure) for rinsing the scraper plate 52. Specifically, the scraper mechanism 7 includes a scraper seat 71 fixed to the inner wall of the tank assembly 1 and a flexible scraper 72 detachably fixed to the top of the scraper seat 71. When the two scraper plates 52 are flipped to the cleaning state, the flexible scraper 72 can be located on the moving path of the scraper plate 52. As the chain drive device 2 drives the scraper mechanism 5 through the flexible scraper 72, the sludge on the pushing surface 521 of the scraper plate 52 can be automatically scraped off, reducing the occurrence of sludge adhesion.

[0077] Along the moving direction of the scraper mechanism 5, the high-pressure water washing device is located at the rear end of the scraper mechanism 7. After the scraper plate 52 passes the flexible scraper 72, the high-pressure water washing device can rinse the pushing surface 521 of the scraper plate 52, further reducing the adhesion and sticking of sludge. The specific structure of the high-pressure water washing device is a conventional design in the field and is not the focus of this case; therefore, it will not be elaborated further here. Furthermore, returning to… Figure 1The bottom of the tank assembly 1 is also provided with a drain outlet 16, which is connected to the cleaning space 13 and can be used to discharge the rinsing wastewater.

[0078] Reference Figure 10 The cleaning space 13 is also equipped with a brush roller mechanism 8. Along the moving direction of the scraper mechanism 5, the brush roller mechanism 8 is located at the rear end of the high-pressure water washing device. The brush roller mechanism 8 includes a brush roller seat 81 fixed to the inner wall of the tank assembly 1 and a brush roller 82 rotatably installed on the brush roller seat 81. A soft brush is sleeved on the outer periphery of the brush roller 82. When the two scraper plates 52 are flipped to the cleaning state, the soft brush can be located on the moving path of the scraper plate 52 to wipe away water droplets on the scraper pusher surface 521, which helps to keep the scraper plate 52 pusher surface 521 dry and clean.

[0079] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A closed-loop sludge scraper conveying system, comprising a tank assembly (1) and a chain drive device (2) disposed inside the tank assembly (1), characterized in that: The tank assembly (1) has an inlet (14) at the top and an outlet (15) at the bottom. The outlet (15) and the inlet (14) are located at opposite ends of the extension direction of the tank assembly (1). A partition frame (11) is fixed inside the tank assembly (1). The inner side of the tank assembly (1) is divided into a conveying space (12) and a cleaning space (13) by the partition frame (11). The conveying space (12) is located above the cleaning space (13). The chain drive device (2) is provided with multiple scraping devices at equal intervals. The scraping device includes a support plate (3) fixed to the chain drive device (2) and a scraper mechanism (5) detachably fixed to the support plate (3). The scraper mechanism (5) includes two scraper plates (52) that are flipped. The scraper plates (52) have a push surface (521) that has been treated with anti-sticking. When the scraper mechanism (5) is in the conveying space (12), the push surfaces (521) of the two scraper plates (52) are respectively located on two opposite sides of the scraper mechanism (5). At the transition between the conveying space (12) and the cleaning space (13), a pusher (17) is provided to force the scraper plate (52) to rotate naturally. When the scraper mechanism (5) enters the cleaning space (13) and passes the pusher (17), the scraper plate (52) rotates to force the pushing surfaces (521) of the two scraper plates (52) to be on the same plane. The inner side of the cleaning space (13) is provided with a scraper mechanism (7) for scraping off the sticky material and a high-pressure water washing device for rinsing the scraper plate (52). The inner bottom wall of the tank assembly (1) is provided with a drain outlet (16) that communicates with the cleaning space (13). The scraper mechanism (5) further includes a fixed base plate (51), which is detachably fixed to the support plate (3); the side of the fixed base plate (51) is provided with two sets of side frame plates (513), and the two scraper pieces (52) are respectively rotatably installed on the two sets of side frame plates (513). In the scraping state, the two scraper pieces (52) are partially abutted and limited; each scraper piece (52) is provided with a load-bearing column (526) for cooperating with the pusher member (17) to abut and rotate under force; The fixed substrate (51) has two abutment parts (514) on the side away from the support plate (3). In the cleaning state, the scraper (52) rotates to partially abut against the abutment part (514). At this time, the pushing surfaces (521) of the two scraper (52) are on the same plane. Each scraper (52) and the fixed substrate (51) are provided with an elastic holding mechanism (6) to keep the scraper (52) in its current state. The elastic retaining mechanism (6) includes a hinge sleeve (61) rotatably mounted on the scraper plate (52) and a hinge rod (62) rotatably mounted on the fixed base plate (51). The hinge rod (62) is movably inserted into the hinge sleeve (61). A hard spring is provided between the hinge rod (62) and the hinge sleeve (61). The hard spring is used to force the hinge rod (62) and the hinge sleeve (61) to move away from each other in the normal state. The scraper plate (52) has a rotating shaft (525) that is rotatably connected to the side frame plate (513), and the hinge rod (62) has a hinge shaft (621) that is hinged to the fixed base plate (51). In the scraping state, the elastic holding mechanism (6) is located on one side of the virtual connection line between the rotating shaft (525) and the hinge shaft (621); in the cleaning state, the elastic holding mechanism (6) is located on the other side of the virtual connection line between the rotating shaft (525) and the hinge shaft (621).

2. The closed-loop sludge scraper conveying system according to claim 1, characterized in that: The support plate (3) has a sliding area (31), and a transverse plate (32) is slidably installed inside the sliding area (31). The two opposite sides of the transverse plate (32) are respectively provided with multiple hook parts (321); the bottom of the fixed base plate (51) is rotatably installed with multiple hook plates (511), and each hook plate (511) is respectively engaged with each hook part (321) for positioning. Each of the hook plates (511) is arranged at equal intervals. The side of the support plate (3) is provided with a pressing mechanism (4) for forcing the transverse plate (32) to move laterally. After the transverse plate (32) moves laterally, each hook part (321) can disengage from each hook plate (511).

3. The closed-loop sludge scraper conveying system according to claim 2, characterized in that: The pressing mechanism (4) is provided in two sets, and the two sets of pressing mechanisms (4) are respectively located at both ends of the extension direction of the transverse plate (32); The pressing mechanism (4) includes a pressing rod (41), a movable pin (42), a guide sleeve (43), and a first elastic element (44). The guide sleeve (43) is fixedly embedded in the inner side of the support plate (3) and has an axially penetrating rectangular groove (431). The pressing rod (41) is movably inserted into the support plate (3), and the end of the pressing rod (41) has a rectangular column portion (411), which is movably inserted into the rectangular groove (431). The first elastic element (44) is disposed between the pressing rod (41) and the guide sleeve (43) to force the pressing rod (41) to be normally exposed in the transverse plate (32). The movable pin (42) is movably disposed between the pressing rod (41) and the transverse plate (32). When the pressing rod (41) of one of the pressing mechanisms (4) is forced to move inward, it can drive the movable pin (42) of the pressing mechanism (4) to move axially to force the transverse plate (32) to move, while the movable pin (42) of the other pressing mechanism (4) can move laterally to avoid it.

4. The closed-loop sludge scraper conveying system according to claim 3, characterized in that: The bracket plate (3) has an installation area (35) for installing a movable pin (42). The movable pin (42) is laterally slidably disposed in the installation area (35), and the outer surface of the movable pin (42) has a support surface (421) for limiting rotation. A reset component (45) is fixed on the outside of the bracket plate (3) to force the movable pin (42) to normally abut against the inner wall of one side of the installation area (35). The transverse plate (32) has a receiving groove (322) on the side near the movable pin (42). The groove opening of the receiving groove (322) has a linkage step (323). In the initial state, the end of the movable pin (42) away from the pressing rod (41) abuts against the linkage step (323). When the movable pin (42) moves laterally, the movable pin (42) can enter the receiving groove (322). The receiving groove (322) is provided with a second elastic element, which is used to force the movable pin (42) to abut against the guide sleeve (43) in a normal state. The movable pin (42) has an insertion port (422) at one end near the pressing rod (41). The rectangular column (411) is inserted into the insertion port (422). In the initial state, the first elastic member (44) can force the rectangular column (411) to be normally located outside the insertion port (422). When the pressing rod (41) is forced to move inward, the rectangular column (411) is matched and inserted into the insertion port (422) to limit the lateral movement of the movable pin (42).

5. The closed-loop sludge scraper conveying system according to claim 4, characterized in that: The reset assembly (45) includes a spring seat (451) fixed to the side of the bracket plate (3), a reset baffle (452) movably inserted into the spring seat (451), and a third elastic member (453) disposed between the reset baffle (452) and the spring seat (451). The third elastic member (453) is used to force the reset baffle (452) to normally abut against the side of the movable pin (42).

6. The closed-loop sludge scraper conveying system according to claim 1, characterized in that: The scraper plate (52) has an extension (524) on its side, and one side of the extension (524) is flush with the push surface (521). When the two scraper plates (52) rotate to the same plane as the push surface (521), the two extensions (524) abut against each other and cover the inner fixed base plate (51) and the support plate (3).

7. The closed-loop sludge scraper conveying system according to claim 1, characterized in that: The scraper mechanism (7) includes a scraper seat (71) fixed to the inner wall of the tank assembly (1) and a flexible scraper (72) detachably fixed to the scraper seat (71), the flexible scraper (72) being located on the moving path of the scraper plate (52).

8. The closed-loop sludge scraper conveying system according to claim 1, characterized in that: It also includes a brush roller mechanism (8) disposed inside the cleaning space (13). The brush roller mechanism (8) includes a brush roller seat (81) fixed to the inner wall of the tank assembly (1) and a brush roller (82) rotatably mounted on the brush roller seat (81). A soft brush is sleeved on the outer periphery of the brush roller (82), and the soft brush is located on the moving path of the scraper plate (52).

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