Anti-siltation stirring assembly for sludge return pipeline

Abstract

The invention discloses an anti-siltation stirring assembly for a sludge return pipeline, and belongs to the technical field of sludge treatment equipment. The device comprises a return pipe, a main shaft, multiple groups of main stirring blades, an adaptive mechanism and a knocking mechanism, the main shaft is rotatably arranged in the return pipe, one end of the main shaft extends to the outer side of the return pipe, and the main shaft is a hollow shaft body. According to the invention, through the arrangement of the adaptive mechanism, the extension length of the extended stirring blade can be flexibly adjusted according to the pipe diameter specifications of different sludge backflow pipelines, so that the extended stirring blade is always kept at a reasonable operation distance from the inner wall of the pipeline, backflow pipelines with various pipe diameters are effectively adapted, the equipment purchase and application cost is remarkably reduced, and the universality is improved; the knocking mechanism is arranged, the reciprocating rod is driven by power of water flow to continuously reciprocate, the conical knocking head at the end of the reciprocating rod is driven to continuously knock the inner pipe wall of the backflow pipe, hardened sludge attached to the pipe wall can be crushed and shaken off, and the situation that the circulation section of a pipeline is reduced due to thickening of a hardened layer is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment equipment, in particular to a sludge backflow pipeline anti-deposition stirring assembly. BACKGROUND

[0002] In the fields of sewage treatment, environmental protection engineering, etc., the sludge backflow system is a key link to ensure the stable operation of the treatment process. The sludge backflow pipeline, as the core channel for sludge transportation, directly affects the efficiency of the entire treatment system. However, sludge itself has the characteristics of high viscosity and easy sedimentation. During the transportation process in the backflow pipeline, it is prone to deposition, which leads to a reduction in the flow cross-section of the pipeline and an increase in transportation resistance. In severe cases, it may cause pipeline blockage, which not only affects the continuity of the treatment process but also requires a large amount of manpower and resources for dredging, increasing the operation and maintenance cost.

[0003] To solve the problem of sludge deposition, the existing technology usually sets a stirring assembly in the sludge backflow pipeline. The rotation of the stirring blade disturbs the sludge in the pipeline, reducing the probability of sedimentation. However, the existing stirring assembly has obvious limitations in practical application. On the one hand, the installation position between the stirring blade and the pipeline is fixed, and the extension length of the stirring blade cannot be adjusted, which leads to the fact that the same stirring assembly can only adapt to a single pipe diameter of the backflow pipeline. In actual engineering, the pipe diameter specifications of the sludge backflow pipeline are diverse, and the stirring assembly needs to be designed and customized for different pipe diameters, which not only increases the equipment procurement cost but also reduces the universality of the equipment. On the other hand, after a long time of transporting sludge in the backflow pipeline, the solid particles in the sludge are easily adsorbed on the inner wall of the pipeline and gradually accumulated and hardened, forming a hard hardened layer. The existing stirring blade is limited to the flow of sludge in the central area of the pipeline and cannot reach the hardened layer on the inner wall of the pipeline, making it difficult to clean the hardened sludge. As the hardened layer continues to thicken, it still causes blockage of the pipeline flow, even causing blockage, affecting the normal operation of the sludge backflow system. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide a sludge backflow pipeline anti-deposition stirring assembly. The assembly adjusts the extension length of the stirring blade through the setting of an adaptation mechanism, adapts to different pipe diameters, and removes the hardened layer on the inner wall of the pipeline through a knocking mechanism, effectively preventing sludge deposition and pipeline blockage.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: a sludge backflow pipeline anti-deposition stirring assembly, comprising a backflow pipe, further comprising: a main shaft, the main shaft is rotationally arranged in the backflow pipe and one end of the main shaft extends to the outside of the backflow pipe, and the main shaft is a hollow shaft body; A plurality of groups of main stirring blades are equidistantly arranged on the main shaft, the number of each group of the main stirring blades is at least three, and the main stirring blades are fixed on the main shaft in a ring shape and have a hollow structure; An adapting mechanism is arranged in the main stirring blade to adapt to the return pipe with different diameters; A knocking mechanism is arranged in the main stirring blade to knock the inner wall of the return pipe to avoid hardening; The adapting mechanism comprises a threaded rod arranged in the main shaft in a rotating manner, one end of the threaded rod extends to the outside of the main shaft, an inner threaded sleeve corresponding to the number of groups of the main stirring blades is threadedly sleeved on the threaded rod, a driving wedge corresponding to the number of groups of the main stirring blades is fixed on the outer side wall of the inner threaded sleeve in a ring shape, a driven plate is slidably arranged in the main stirring blade, a driven wedge matched with the driving wedge is fixedly connected to the side wall of the driven plate close to the main shaft, and an extended stirring blade is fixedly connected to the side wall of the driven plate away from the main shaft.

[0006] As a further description of the above technical solution, the knocking mechanism comprises an L-shaped support plate fixedly arranged on the side wall of the driven plate close to the extended stirring blade, a reciprocating rod is slidably inserted into the horizontal part of the L-shaped support plate, a conical knocking head is fixedly connected to one end of the reciprocating rod extending to the outside of the main stirring blade, an annular boss is fixedly sleeved on the reciprocating rod, a first return spring is arranged between the annular boss and the inner wall of the side of the main stirring blade away from the main shaft, a driving rod is rotatably inserted into the vertical part of the L-shaped support plate, a impeller is fixedly connected to one end of the driving rod extending to the outside of the main stirring blade on the water side, and a cam is fixedly connected to the other end of the driving rod, a ball is arranged on the other end of the reciprocating rod, and the ball abuts against the cam.

[0007] As a further description of the above technical solution, the locking mechanism comprises a driving shaft fixedly arranged on one end of the threaded rod outside the main shaft, a sliding groove is formed in the driving shaft, a moving plate is slidably arranged in the sliding groove, a hand wheel is fixedly sleeved on the outer side of the moving plate, a pressing spring is arranged between the moving plate and the side wall of the sliding groove away from the threaded rod, a plurality of lock holes are arranged in the outer side wall of the main shaft close to the driving shaft, and two insertion pins matched with the lock holes and symmetrically distributed are fixedly connected to the hand wheel.

[0008] As a further description of the above technical solution, a vertical groove is formed in the side wall of the main stirring blade close to the impeller, a sliding plate is slidably arranged in the vertical groove, a flexible sealing cover is arranged between the sliding plate and the two side walls of the vertical groove, and the driving rod and the sliding plate are rotatably matched.

[0009] As a further description of the above technical scheme, the second reset spring is fixedly connected to the four corners of the side wall of the driven wedge away from the driven wedge.

[0010] As a further description of the above technical scheme, the driving pulley is fixedly sleeved on one end of the main shaft outside the reflux pipe.

[0011] As a further description of the above technical scheme, three guide grooves are arranged on the inner side wall of the main shaft, and the outer side of the internal thread sleeve is fixedly connected with three guide plates in sliding fit with the guide grooves.

[0012] As a further description of the above technical scheme, the end of the extension stirring blade close to the inner pipe wall of the reflux pipe is coated with a wear-resistant coating.

[0013] Compared with the prior art, the present application has the following beneficial effects: 1. By setting the matching mechanism, the extension stirring blade can be flexibly adjusted in length according to the pipe diameter specifications of different sludge reflux pipes, ensuring that the extension stirring blade always maintains a reasonable working distance from the inner wall of the pipe, effectively adapting to reflux pipes of various diameters, significantly reducing equipment procurement and application costs, and improving versatility.

[0014] 2. By setting the knocking mechanism, the reciprocating rod is continuously moved by the power of the water flow, driving the conical knocking head at the end of the reciprocating rod to continuously knock the inner wall of the reflux pipe, which can break and shake off the hardened sludge attached to the pipe wall, avoiding the thickening of the hardened layer to reduce the flow cross section of the pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the sludge reflux pipe anti-deposition stirring assembly of the present application; Figure 2 It is a main shaft structure schematic view of the sludge reflux pipe anti-deposition stirring assembly of the present application; Figure 3 It is a main shaft sectional view of the sludge reflux pipe anti-deposition stirring assembly of the present application; Figure 4 It is a main stirring blade internal structure schematic view of the sludge reflux pipe anti-deposition stirring assembly of the present application; Figure 5 It is a locking mechanism structure schematic view of the sludge reflux pipe anti-deposition stirring assembly of the present application; Figure 6 It is a bolt structure schematic view of the sludge reflux pipe anti-deposition stirring assembly of the present application; Figure 7 It is a guide groove structure schematic view of the sludge reflux pipe anti-deposition stirring assembly of the present application.

[0016] In the figure: 1, return pipe; 2, main shaft; 3, main stirring blade; 4, adaptive mechanism; 5, knocking mechanism; 41, threaded rod; 42, internally threaded sleeve; 43, driving wedge; 44, follow-up plate; 45, driven wedge; 46, extended stirring blade; 51, L-shaped support plate; 52, reciprocating rod; 53, conical knocking head; 54, annular boss; 55, first return spring; 56, driving rod; 57, impeller; 58, cam; 59, ball; 6, locking mechanism; 61, driving shaft; 62, sliding slot; 63, moving plate; 64, hand wheel; 65, abutting spring; 66, lock hole; 67, bolt; 31, vertical slot; 32, sliding plate; 33, flexible sealing cover; 34, second return spring; 7, driving pulley; 21, guide slot; 421, guide plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0018] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] Please refer to Figures 1-7The present application provides a kind of sludge backflow pipeline anti-silt stirring assembly, including backflow pipe 1, main shaft 2, multiple groups of main stirring blade 3, adaptive mechanism 4 and knocking mechanism 5.Backflow pipe 1 is the core channel of sludge transport, provides installation carrier and sludge flow space for the whole stirring assembly, and is the necessary path of sludge backflow.Main shaft 2 adopts hollow shaft body design, is rotationally arranged in backflow pipe 1 and extends to the outside of backflow pipe 1, its core role is to provide installation support for multiple groups of main stirring blade 3, and drive main stirring blade 3 to rotate in backflow pipe 1, while hollow structure provides accommodation and installation space for threaded rod 41 of adaptive mechanism 4.Multiple groups of main stirring blade 3 are equidistantly arranged on main shaft 2, and each group is at least three and is fixed on main shaft 2 in ring direction, and adopts hollow structure.Main stirring blade 3 is the core executive component of sludge stirring, when main shaft 2 drives it to rotate, sludge in the central region of backflow pipe 1 can be disturbed, and sludge precipitation probability is reduced.Hollow structure provides built-in installation space for each component of adaptive mechanism 4, follow-up plate 44 and driven wedge block 45 and knocking mechanism 5.Knocking mechanism 5 is arranged in main stirring blade 3, and its core role is to continuously knock the inner tube wall of backflow pipe 1, avoid sludge adsorption, accumulation and hardening on the tube wall, and guarantee the integrity of pipeline flow cross section; Adaptive mechanism 4 is arranged in main stirring blade 3, and its core role is to adjust the extension length of extension stirring blade 46 to adapt to backflow pipe 1 of different pipe diameters.The mechanism includes threaded rod 41, internal thread sleeve 42, driving wedge block 43, follow-up plate 44, driven wedge block 45 and extension stirring blade 46, and each component cooperates to realize length adjustment.Threaded rod 41 is rotationally arranged in main shaft 2 and extends to the outside of main shaft 2, and provides power transmission basis for the whole adaptive mechanism 4.Internal thread sleeve 42 is threadedly sleeved on threaded rod 41, corresponds to the number of multiple groups of main stirring blade 3, and is used to drive driving wedge block 43 to move synchronously.Driving wedge block 43 is fixed on the outer side wall of internal thread sleeve 42, corresponds to the number of each group of main stirring blade 3, cooperates with driven wedge block 45 through wedge surface, and converts the rotary motion of threaded rod 41 into the linear motion of follow-up plate 44.Follow-up plate 44 is slidably arranged in main stirring blade 3, connects driven wedge block 45 and extension stirring blade 46, and transmits the power of wedge block to extension stirring blade 46.Driven wedge block 45 is fixed on the side wall of follow-up plate 44 close to main shaft 2, is matched with driving wedge block 43, receives the thrust of driving wedge block 43 and drives follow-up plate 44 to slide.Extension stirring blade 46 is fixed on the side wall of follow-up plate 44 away from main shaft 2, moves with follow-up plate 44 to realize extension or retraction, and then adapts to backflow pipe 1 of different pipe diameters, and expands the stirring range to the area close to the tube wall.

[0021] Further explanation, the wedge surface of the driving wedge block 43 is in close contact with the wedge surface of the driven wedge block 45, when the threaded rod 41 rotates in the positive direction, the inner threaded sleeve 42 moves axially along the guide groove 21, the driving wedge block 43 extrudes the driven wedge block 45, converts the axial force into radial force to push the driven plate 44 to move, and further drives the extension stirring blade 46 to extend.

[0022] Further explanation, the knocking mechanism 5 includes an L-shaped support plate 51, a reciprocating rod 52, a conical knocking head 53, an annular boss 54, a first reset spring 55, a driving rod 56, an impeller 57, a cam 58 and a ball 59. The L-shaped support plate 51 is fixedly arranged on the side wall of the driven plate 44 close to the extension stirring blade 46, providing installation support for the reciprocating rod 52 and the driving rod 56, ensuring that the two follow synchronously when the driven plate 44 moves, and ensuring that the relative position of the knocking mechanism 5 and the extension stirring blade 46 is stable. The reciprocating rod 52 is slidably inserted into the transverse part of the L-shaped support plate 51, one end extends to the outside of the main stirring blade 3, and the other end is provided with the ball 59, which functions to transmit power and drive the conical knocking head 53 to make reciprocating linear motion, achieving knocking on the pipe wall. The conical knocking head 53 is fixedly connected to the end of the reciprocating rod 52 extending to the outside of the main stirring blade 3, and the conical design can concentrate the knocking force, making it easier to break up the hardened sludge on the pipe wall and avoid thickening of the hardened layer. The annular boss 54 is fixedly sleeved on the reciprocating rod 52 between the transverse part of the L-shaped support plate 51 and the inner wall of the main stirring blade 3, used to cooperate with the first reset spring 55 to reset the reciprocating rod 52, ensuring the continuity of the knocking action. The first reset spring 55 is arranged between the annular boss 54 and the inner wall of the main stirring blade 3 away from the main shaft 2, in the initial state, it is in a natural elongated state, when the cam 58 pushes the reciprocating rod 52 to move towards the pipe wall, the annular boss 54 compresses the first reset spring 55, when the cam 58 rotates to the non-push position, the first reset spring 55 elastically resets, driving the reciprocating rod 52 to move in the opposite direction, completing a reciprocating knocking cycle. The driving rod 56 is rotatably inserted into the vertical part of the L-shaped support plate 51, one end extends to the outside of the main stirring blade 3 and is connected to the impeller 57, the other end is fixedly connected to the cam 58, which functions to transmit the rotary motion of the impeller 57 to the cam 58. The impeller 57 is fixedly connected to the end of the driving rod 56 on the water side and extends to the outside of the main stirring blade 3, when the water flows in the return pipe 1, it will impact the impeller 57, driving the impeller 57 to rotate, and then providing power for the knocking mechanism 5, without the need for additional driving source, saving energy and cost. The cam 58 is fixedly connected to the end of the driving rod 56 away from the impeller 57, in contact with the ball 59 at the end of the reciprocating rod 52, the eccentric structure of the cam 58 continuously pushes the reciprocating rod 52 to make linear motion when rotating, converting the rotary motion into reciprocating linear motion. The ball 59 is arranged at the end of the reciprocating rod 52 away from the conical knocking head 53, in contact with the cam 58, which functions to reduce the friction between the reciprocating rod 52 and the cam 58, avoiding wear and tear between the two, ensuring the smoothness of power transmission.

[0023] Further illustrate, the impeller 57 is water side for water flow direction, water flow impact impeller 57 blade driven by its rotation, drive rod 56 synchronous rotation makes cam 58 eccentric end periodically push ball 59, cooperate with the first reset spring 55 extension force, realize the continuous reciprocating motion of reciprocating rod 52.

[0024] Further illustrate, it also includes locking mechanism 6, locking mechanism 6 includes drive shaft 61, sliding groove 62, moving plate 63, hand wheel 64, abutting spring 65, lock hole 66 and bolt 67. Drive shaft 61 is fixedly arranged at one end of threaded rod 41 located outside the main shaft 2, provides mounting carrier for other components of locking mechanism 6, at the same time, facilitates rotating drive shaft 61 to drive threaded rod 41 to rotate. Sliding groove 62 is opened in drive shaft 61, provides sliding space for moving plate 63, ensures that moving plate 63 can move along the axial direction of drive shaft 61. Moving plate 63 is slidably arranged in sliding groove 62, outer side fixedly sleeved hand wheel 64, which is used to drive bolt 67 to move synchronously, realizes the plug-in cooperation of bolt 67 and lock hole 66. Hand wheel 64 is fixedly sleeved outside moving plate 63, facilitates operator to hold and rotate drive shaft 61, at the same time, provides mounting position for bolt 67. Abutting spring 65 is arranged between moving plate 63 and the side wall away from threaded rod 41 of sliding groove 62, in initial state, is in compression state, provides abutting force for moving plate 63 in the direction of main shaft 2, ensures that bolt 67 will not fall off after being inserted into lock hole 66, guarantees the stability of locking. Lock hole 66 is a plurality of and annularly arranged on the outer wall of main shaft 2 close to drive shaft 61, is adapted with bolt 67, realizes the fixation of rotation angle of threaded rod 41 by inserting bolt 67 into different positions of lock hole 66, further locks the extension length of extended stirring blade 46. Bolt 67 is two and symmetrically fixedly connected on hand wheel 64, is adapted with lock hole 66, limits the relative rotation between drive shaft 61 and main shaft 2 by inserting into lock hole 66, thereby locking the position of threaded rod 41.

[0025] Further illustrate, after bolt 67 is inserted into lock hole 66, the relative rotation between drive shaft 61 and main shaft 2 is limited by the continuous abutting force of abutting spring 65, thereby fixing the axial position of threaded rod 41, ensures the stability of extension length of extended stirring blade 46.

[0026] Further explanation, the side wall of the main stirring blade 3 close to the impeller 57 is provided with a vertical groove 31, which provides a sliding space for the sliding plate 32, and the driving rod 56 is adapted to the synchronous movement of the follower plate 44. The vertical groove 31 is provided with a sliding plate 32, which is in rotating cooperation with the driving rod 56. Its function is to provide stable rotating support for the driving rod 56, and when the L-shaped supporting plate 51 is moved with the follower plate 44, the sliding plate 32 synchronously slides in the vertical groove 31. The sliding plate 32 and the two side walls of the vertical groove 31 are both provided with flexible sealing covers 33, which are folding elastic sealing structures, which can be stretched and retracted with the sliding of the sliding plate 32 in the vertical groove 31, completely blocking the gap between the vertical groove 31 and the sliding plate 32, preventing sludge particles from entering the inside of the main stirring blade 3, and avoiding the jamming of the components such as the follower plate 44 and the driving rod 56.

[0027] Further explanation, the side wall of the main stirring blade 3 close to the impeller 57 is provided with a vertical groove 31, which provides a sliding space for the sliding plate 32, and the driving rod 56 is adapted to the synchronous movement of the follower plate 44. The vertical groove 31 is provided with a sliding plate 32, which is in rotating cooperation with the driving rod 56. Its function is to provide stable rotating support for the driving rod 56, and when the L-shaped supporting plate 51 is moved with the follower plate 44, the sliding plate 32 synchronously slides in the vertical groove 31. The sliding plate 32 and the two side walls of the vertical groove 31 are both provided with flexible sealing covers 33, which are folding elastic sealing structures, which can be stretched and retracted with the sliding of the sliding plate 32 in the vertical groove 31, completely blocking the gap between the vertical groove 31 and the sliding plate 32, preventing sludge particles from entering the inside of the main stirring blade 3, and avoiding the jamming of the components such as the follower plate 44 and the driving rod 56.

[0028] Further explanation, the end of the main shaft 2 outside the reflux pipe 1 is fixedly provided with a driving pulley 7, which is connected with an external driving motor through a belt. After the external driving motor is started, the driving pulley 7 is driven to rotate through the belt, and then the main shaft 2 is driven to rotate in the reflux pipe 1, providing power for the rotation of the main stirring blade 3 and the extension stirring blade 46.

[0029] Further explanation, the inner side wall of the main shaft 2 is annularly provided with three guide grooves 21, and the outer side of the inner threaded sleeve 42 is fixedly connected with three guide plates 421 which are in sliding cooperation with the guide grooves 21. The guide groove 21 is an axial through groove, and the guide plate 421 is embedded in the guide groove 21. When they are in sliding cooperation, the circumferential rotation of the inner threaded sleeve 42 is strictly limited, and only its axial translation along the threaded rod 41 is allowed, so as to ensure the precise fitting and thrust transmission of the driving wedge block 43 and the driven wedge block 45.

[0030] Further explanation, the end of the extension stirring blade 46 close to the inner wall of the reflux pipe 1 is coated with a wear-resistant coating, which can improve the wear resistance of the end of the extension stirring blade 46, reduce the wear and friction loss of the sludge, and prolong the service life.

[0031] It should be noted that the present application is a kind of sludge backflow pipeline anti-silt stirring assembly, in use, first, the operator determines the required extension length of stirring blade 46 according to the pipe diameter specification of the backflow pipe 1 to be installed. Hold the hand wheel 64 and pull it away from the main shaft 2, the moving plate 63 slides in the sliding groove 62 and compresses against the spring 65, the bolt 67 is pulled out of the lock hole 66, and the locking of the drive shaft 61 is released. Then rotate the hand wheel 64, drive the drive shaft 61 and threaded rod 41 to rotate synchronously, because the inner threaded sleeve 42 is in sliding fit with the guide groove 21 on the inner wall of the main shaft 2 through the guide plate 421, the inner threaded sleeve 42 cannot rotate with the threaded rod 41, but can only move along the axial direction of the threaded rod 41 towards the main stirring blade 3. The inner threaded sleeve 42 drives the driving wedge block 43 to move synchronously, the driving wedge block 43 extrudes the driven wedge block 45 through the wedge surface, pushes the driven plate 44 to slide in the main stirring blade 3 away from the main shaft 2, and the driven plate 44 drives the extension stirring blade 46 to extend from the main stirring blade 3. In this process, the driven plate 44 extrudes the second return spring 34, and at the same time, the L-shaped support plate 51 on the driven plate 44 drives the drive rod 56 to move synchronously, the drive rod 56 drives the sliding plate 32 to slide in the vertical slot 31, and the flexible sealing cover 33 expands and contracts accordingly, maintaining the sealing of the main stirring blade 3. When the extension stirring blade 46 reaches the required length of the pipe diameter of the backflow pipe 1, stop rotating the hand wheel 64, and loosen the hand wheel 64, the elastic return spring 65 is elastically returned, the moving plate 63 is pushed to move towards the main shaft 2, the bolt 67 is inserted into the corresponding lock hole 66, and the position of the drive shaft 61 and the threaded rod 41 is locked, completing the length adjustment of the extension stirring blade 46. The drive pulley 7 at the end of the main shaft 2 is connected to the external drive motor through the belt, and the external drive motor is started. The motor drives the drive pulley 7 to rotate through the belt, and then drives the main shaft 2 to rotate in the backflow pipe 1. The main shaft 2 drives multiple groups of main stirring blades 3 and extension stirring blades 46 to rotate synchronously, and the sludge in the backflow pipe 1 is stirred in all directions. The main stirring blades 3 disturb the sludge in the central area of the pipeline, and the extension stirring blades 46 disturb the sludge near the pipe wall, effectively reducing the probability of sludge deposition and preventing siltation. In the sludge backflow process, the water flow flows in the backflow pipe 1 and impacts the impeller 57, driving the impeller 57 to rotate, and the impeller 57 drives the cam 58 to rotate synchronously through the driving rod 56. When the cam 58 rotates, the eccentric part of the cam 58 continuously pushes the ball 59 at the end of the reciprocating rod 52, so that the reciprocating rod 52 moves towards the inner wall of the backflow pipe 1, and the reciprocating rod 52 drives the conical knocking head 53 to knock the pipe wall, and the annular boss 54 compresses the first reset spring 55. When the eccentric part of the cam 58 rotates to abut against the ball 59, the first reset spring 55 is elastically reset, and the annular boss 54 drives the reciprocating rod 52 to move reversely, and the conical knocking head 53 moves away from the pipe wall, and a knocking cycle is completed. With the continuous rotation of the impeller 57, the conical knocking head 53 continuously reciprocates to knock the pipe wall, so that the sludge adhered to the pipe wall is broken and shaken off, the sludge is prevented from hardening and thickening, and the flow cross section of the backflow pipe 1 is guaranteed to be complete.

[0032] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A sludge return pipe anti-sludge mixing assembly, comprising a return pipe (1), characterized in that, Also includes: The main shaft (2) is rotatably disposed inside the return pipe (1) and one end of it extends to the outside of the return pipe (1). The main shaft (2) is a hollow shaft. Multiple sets of main stirring blades (3) are equidistantly arranged on the main shaft (2). Each set of main stirring blades (3) has at least three blades and is circumferentially fixed on the main shaft (2). The main stirring blades (3) are hollow structures. The adapter (4) is installed inside the main stirring blade (3) and is used to adapt to the return pipe (1) of different diameters. A striking mechanism (5) is provided inside the main stirring blade (3) to continuously strike the inner wall of the return pipe (1) to prevent caking. The adapter mechanism (4) includes a threaded rod (41) rotatably disposed in the main shaft (2). One end of the threaded rod (41) extends to the outside of the main shaft (2). The threaded rod (41) is threaded with an inner threaded sleeve (42) corresponding to the number of multiple sets of main stirring blades (3). An active wedge block (43) corresponding to the number of each set of main stirring blades (3) is fixedly fixed on the outer wall of the inner threaded sleeve (42). A follower plate (44) is slidably disposed inside the main stirring blade (3). A driven wedge block (45) adapted to the active wedge block (43) is fixedly connected on the side wall of the follower plate (44) close to the main shaft (2). An extended stirring blade (46) is fixedly connected on the side wall of the follower plate (44) away from the main shaft (2).

2. The sludge return pipeline anti-sludge mixing assembly according to claim 1, characterized in that, The striking mechanism (5) includes an L-shaped support plate (51) fixedly mounted on the side wall of the follower plate (44) near the extended stirring blade (46). A reciprocating rod (52) is slidably inserted into the transverse part of the L-shaped support plate (51). One end of the reciprocating rod (52) extends to the outside of the main stirring blade (3) and is fixedly connected to a conical striking head (53). An annular boss (54) is fixedly sleeved on the reciprocating rod (52). A first return spring (55) is provided between the annular boss (54) and the inner wall of the main stirring blade (3) away from the main shaft (2). A drive rod (56) is rotatably inserted into the vertical part of the L-shaped support plate (51). One end of the drive rod (56) on the water-facing side extends to the outside of the main stirring blade (3) and is fixedly connected to an impeller (57), and the other end is fixedly connected to a cam (58). A ball (59) is provided at the other end of the reciprocating rod (52). The ball (59) abuts against the cam (58).

3. The sludge return pipeline anti-sludge mixing assembly according to claim 1, characterized in that, It also includes a locking mechanism (6), which includes a drive shaft (61) fixedly installed at one end of the threaded rod (41) located outside the main shaft (2). A sliding groove (62) is provided in the drive shaft (61), and a moving plate (63) is slidably provided in the sliding groove (62). A handwheel (64) is fixedly sleeved on the outside of the moving plate (63). A retaining spring (65) is provided between the moving plate (63) and the side wall of the sliding groove (62) away from the threaded rod (41). A number of locking holes (66) are provided on the outer wall of the main shaft (2) near the drive shaft (61). Two pins (67) that are adapted to the locking holes (66) and are symmetrically distributed are fixedly connected to the handwheel (64).

4. The sludge return pipeline anti-sludge mixing assembly according to claim 2, characterized in that, The main stirring blade (3) has a vertical groove (31) on one side wall near the impeller (57). A sliding plate (32) is slidably provided in the vertical groove (31). A flexible sealing cover (33) is provided between the sliding plate (32) and the two side walls of the vertical groove (31). The drive rod (56) rotates with the sliding plate (32).

5. The anti-sludge-accumulation stirring assembly for a sludge return pipeline according to claim 1, characterized in that, The follower plate (44) is fixedly connected to the four corners of the side wall away from the driven wedge block (45) with a second return spring (34). The other end of the second return spring (34) is fixedly connected to the inner wall of the main stirring blade (3) away from the main shaft (2).

6. The anti-sludge-accumulation stirring assembly for a sludge return pipeline according to claim 1, characterized in that, The main shaft (2) is fixedly fitted with a drive pulley (7) at one end located outside the return pipe (1).

7. The sludge return pipeline anti-sludge mixing assembly according to claim 1, characterized in that, The inner sidewall of the main shaft (2) is provided with three guide grooves (21), and the outer side of the internal threaded sleeve (42) is fixedly connected with three guide plates (421) that slide with the guide grooves (21).

8. The anti-sludge-accumulation stirring assembly for a sludge return pipeline according to claim 1, characterized in that, The extended stirring blade (46) is coated with a wear-resistant coating at one end near the inner wall of the return pipe (1).

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