Mud scraping device

By introducing a drive structure and a stop locking mechanism into the scraper device, the safety and efficiency issues of workers having to reach the bottom of the sedimentation tank to adjust the scraper inclination angle are solved, and safe and fast baffle angle adjustment is achieved.

CN120789730APending Publication Date: 2025-10-17YUEQING RONGYU SEWAGE TREATMENT CO LTD +1
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Patent Information

Application Number
CN202511257018.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-04
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

The existing scraper device requires workers to reach the bottom of the sedimentation tank to adjust the scraper inclination angle, which poses a safety risk and takes a long time to adjust.

Method used

The support bar is equipped with a driving structure, a fixed gear and a fixed rack. The fixed rack is driven to move by the moving structure to adjust the angle of the baffle. Combined with the stop structure and the locking structure, it prevents workers from directly contacting the bottom of the sedimentation tank.

Benefits of technology

The baffle angle can be quickly adjusted without the need for workers to reach the bottom of the sedimentation tank, reducing safety risks and improving operational efficiency and safety.

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Abstract

The invention relates to the technical field of sludge treatment, and discloses a sludge scraping device which comprises a supporting frame, a driving structure is arranged on the supporting frame, a supporting strip is arranged on the driving structure, the driving structure is used for driving the supporting strip to rotate, a plurality of baffles are arranged on the supporting strip, fixing rods are arranged on the baffles, and fixing holes allowing the fixing rods to be inserted are formed in the supporting strip. The fixing rod is provided with a fixing gear, the supporting strip is provided with a fixing rack used for being meshed with the fixing gear, and the supporting strip is provided with a moving structure used for driving the fixing rack to move. The moving structure drives the fixing rack to move, and due to the fact that the fixing rack is connected to the fixing gear in a meshed mode, the fixing gear can drive the fixing rod to rotate; the fixing rods can rotate in the fixing holes in the supporting strips to adjust the angle of the baffle, so that a worker does not need to reach the bottom of the sedimentation tank to adjust the position of the baffle, and risks possibly existing when the worker goes up and down the bottom of the sedimentation tank are reduced.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment, and in particular to a sludge scraping device. BACKGROUND

[0002] The sludge scraping device is an important equipment for treating sewage and industrial wastewater, mainly used for treating sludge at the bottom of a sedimentation tank to facilitate subsequent sludge cleaning. The sludge scraping device is divided into peripheral drive sludge scraper and center drive sludge scraper according to different power transmission modes. The center drive sludge scraper has a power source arranged at the axis of the sedimentation tank and performs sludge scraping operation through the center power source.

[0003] In the related art, the sludge scraping device includes a support frame, a support bar rotatably connected to the support frame, a scraper fixedly connected to the support bar, and a driving structure arranged on the support frame to drive the support bar to rotate.

[0004] Since different silt requires different degrees of inclination of the scraper to cooperate, the staff needs to reach the bottom of the sedimentation tank to adjust the inclination angle of the scraper, which causes the staff to have a certain risk and a long adjustment time, which is not conducive to quickly cleaning the silt. SUMMARY

[0005] In order to improve the problem that the staff needs to reach the bottom of the sedimentation tank to adjust the inclination angle of the scraper, the present application provides a sludge scraping device.

[0006] The sludge scraping device provided by the present application adopts the following technical solution: A sludge scraping device includes a support frame, a driving structure arranged on the support frame, a support bar arranged on the driving structure, the driving structure for driving the support bar to rotate, a plurality of baffles arranged on the support bar, a fixed rod arranged on the baffle, a fixed hole provided in the support bar for inserting the fixed rod, a fixed gear arranged on the fixed rod, a fixed rack arranged on the support bar for engaging the fixed gear, and a moving structure arranged on the support bar for driving the fixed rack to move.

[0007] By adopting the above technical solution, the moving structure drives the fixed rack to move. Since the fixed rack is engaged with the fixed gear, the fixed gear can drive the fixed rod to rotate, allowing the fixed rod to rotate in the fixed hole in the support bar, thereby adjusting the angle of the baffle. Therefore, the staff does not need to reach the bottom of the sedimentation tank to adjust the position of the baffle, reducing the risk that the staff may have when going up and down the bottom of the sedimentation tank. At the same time, the moving structure drives the baffle to be adjusted at a faster speed.

[0008] Optionally, the support strip is provided with a stop structure, the stop structure is provided with a stop ring, the stop structure drives the stop ring to move along the length direction of the fixed rod, the inner wall of the stop ring is provided with a stop block, a plurality of stop grooves are formed in the fixed rod, the stop grooves are used for inserting the stop block, and a stop ring groove communicating with the plurality of stop grooves is formed in the fixed rod; when the stop block is inserted into the stop groove, the stop ring limits the rotation of the fixed rod; when the stop block is located in the stop ring groove, the fixed rod can rotate.

[0009] By adopting the above technical scheme, the stop structure drives the stop ring to move, the stop block in the stop ring is inserted into the stop groove, the stop block limits the fixed rod, the rotation of the fixed rod is reduced, the fixed rod stably guides the silt, the stop structure drives the stop ring to move, the stop block in the stop ring moves from the stop groove to the stop ring groove, the stop ring does not limit the rotation of the fixed rod, the fixed rack can drive the fixed rod to rotate, and the angle of the baffle is adjusted.

[0010] Optionally, the fixed rod is provided with a perforation communicating with the stop ring groove, and the perforation is used for separating the stop block from the fixed rod.

[0011] By adopting the above technical scheme, if the baffle is damaged, the stop block is separated from the fixed rod through the perforation, the stop block can be separated from the fixed rod through the perforation, the fixed rod can be taken out of the fixed hole, and the baffle is replaced.

[0012] Optionally, the support strip is provided with a locking structure, the locking structure is provided with a locking ring, and the locking structure drives the locking ring to block the opening of the perforation.

[0013] By adopting the above technical scheme, if the staff accidentally touches the stop structure, the locking structure drives the locking ring to block the opening of the perforation, the locking ring can limit the stop block from separating from the fixed rod through the perforation, and the fixed rod is prevented from separating from the fixed hole in the running process.

[0014] Optionally, the locking ring is provided with a locking hole through which the stop block passes, the locking structure is provided with a locking strip, the locking strip and the locking ring are engaged with each other, and the locking structure is used for driving the locking strip to slide.

[0015] By adopting the above technical scheme, the locking structure can drive the locking strip to move through the engagement structure, the locking hole is aligned with the stop block, the stop block passes through the locking hole, the locking of the stop block by the locking ring is released, and the separation between the fixed rod and the support strip is realized.

[0016] Optionally, the support bar is slidably connected with a movable bar, the fixed rack is provided with a plurality of movable holes for the movable bar to insert, the locking bar is provided with a movable slot for the movable bar to insert, and the locking bar is located on the moving path of the movable bar; when the movable bar is located in the movable slot, the movable bar is separated from the movable hole; when the movable bar is located in the movable hole, the movable bar limits the movement of the fixed rack.

[0017] By adopting the above technical scheme, the movable bar can limit the movement of the fixed rack by inserting the movable bar into the movable hole, so that the moving structure cannot drive the fixed rack to move; the staff first drives the locking bar to move through the locking structure, so that the movable slot is aligned with the movable hole; since the locking bar is located on the moving path of the movable bar, the movable bar can fall due to gravity, so that the movable bar can be separated from the movable hole; at this time, the staff removes the staff from the support bar by unlocking the staff, and then adjusts the staff to the appropriate angle through the moving structure, and then starts the locking structure to unlock the staff; the staff can be unlocked only when the locking bar unlocks the staff; twice operation avoids the staff from being accidentally touched.

[0018] Optionally, the movable slot is provided with a movable inclined surface on the slot wall, the movable inclined surface is inclinedly arranged, and the movable bar can move along the movable inclined surface between the movable slot and the surface of the locking bar; when the movable bar abuts against the surface of the locking bar, the movable bar is located in the movable hole.

[0019] By adopting the above technical scheme, the movable bar can move along the movable inclined surface between the movable slot and the surface of the locking bar; even if the staff accidentally touches the locking structure and separates the movable bar from the movable hole, the staff can still move the movable bar from the movable slot to the surface of the locking bar through the locking structure again, so that the movable bar can be located in the movable hole.

[0020] Optionally, the fixed rod is provided with a containing groove, the containing groove is provided with a containing spring, the containing spring is provided with a containing block, and the fixed hole is provided with a containing ring groove for the containing block to insert; when the containing block is inserted into the containing ring groove, the fixed rod is located on the support bar.

[0021] By adopting the above technical scheme, the accommodating block is driven to move by the spring, the accommodating block can be inserted into the accommodating ring groove, the accommodating block pre-fixes the fixing rod, the possibility that the fixing rod directly separates from the fixing hole is reduced, after the staff inserts the fixing rod into position, another staff locks the fixing rod by moving the structure.

[0022] To sum up, the present application includes at least one of the following beneficial technical effects: 1. The moving structure drives the fixed rack to move, since the fixed rack is engaged with the fixed gear, the fixed gear can drive the fixing rod to rotate, so that the fixing rod can rotate in the fixing hole of the support bar, the angle of the baffle is adjusted, so that the staff does not need to reach the bottom of the sedimentation tank to adjust the position of the baffle, reducing the risk of the staff in the sedimentation tank; at the same time, the moving structure is driven to adjust the angle of the baffle more quickly.

[0023] 2. The movable bar is inserted into the movable hole, so that the movable bar can limit the movement of the fixed rack, so that the moving structure cannot drive the fixed rack to move; the staff first drives the locking bar to move by the locking structure, so that the movable slot is aligned with the movable hole, since the locking bar is located in the movement path of the movable bar, the movable bar can fall down due to gravity, so that the movable bar can be separated from the movable hole, at this time, the locking of the movable bar to the fixed rack is released, so that the moving structure can drive the fixed rack to rotate; by limiting the movement of the fixed rack by the movable bar, the possibility that the staff accidentally touches the rotating structure and causes the fixing rod to rotate is reduced, further enhancing the firmness of the fixing rod; when the staff wants to take out the fixing rod from the support bar, the staff needs to first start the locking structure, and then adjust the fixing rod to the appropriate angle by the moving structure, and then unlock the fixing rod, so that the staff avoids accidental touch. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of an embodiment of the present application; Figure 2 is a sectional view along line A-A in Figure 1 ; Figure 3 is an exploded schematic diagram of the accommodating block in the embodiment of the present application; Figure 4 is a structural schematic diagram of the stop structure in the embodiment of the present application; Figure 5 is a structural schematic diagram of the moving structure in the embodiment of the present application; Figure 6 is a structural schematic diagram of the stop structure in the embodiment of the present application; Figure 7is an explosion schematic diagram highlighting the stop ring in the embodiment of the present application; Figure 8 is a structural schematic diagram highlighting the locking structure in the embodiment of the present application; Figure 9 is Figure 4 is an enlarged schematic diagram of part B in FIG. 1.

[0025] Reference signs: 1, support frame; 11, support bar; 111, support cavity; 112, fixing hole; 12, fixing rod; 121, baffle; 122, containing groove; 123, containing spring; 124, containing block; 13, driving structure; 14, stop groove; 141, stop ring groove; 142, perforation; 15, movable bar; 151, movable hole; 152, movable groove; 153, movable block; 154, movable inclined surface; 2, moving structure; 21, moving gear; 22, fixed rack; 23, fixed gear; 3, stop structure; 31, stop bar; 32, stop ring; 33, stop block; 4, locking structure; 41, locking gear; 42, locking bar; 43, locking ring; 44, locking hole. DETAILED DESCRIPTION

[0026] The following will be described in detail in combination with the accompanying Figures 1-9 The present application is further described in detail.

[0027] The embodiment discloses a mud scraping device. Referring to Figure 1 and Figure 2 A mud scraping device comprises a support frame 1, the top of the support frame 1 is provided with a driving structure 13, and the driving structure 13 comprises a driving motor. The support frame 1 is rotationally connected with a support bar 11, and the driving motor can drive the support bar 11 to rotate. The support bar 11 is provided with a support cavity 111, and the support cavity 111 extends along the length direction of the support bar 11.

[0028] Referring to Figure 3 The surface of the support bar 11 close to the bottom of the sedimentation tank is provided with a plurality of fixing holes 112, and the plurality of fixing holes 112 are communicated with the support cavity 111. The support bar 11 is provided with a plurality of fixing rods 12, the fixing rods 12 can be inserted into the fixing holes 112, and the surface of the fixing rods 12 is fixedly connected with baffles 121. When the fixing rods 12 are inserted into the fixing holes 112, the baffles 121 and the support bar 11 form a certain angle, so that the mud and sand can flow along the baffles 121 continuously.

[0029] Referring to Figure 3Two accommodating grooves 122 are formed on the outer surface of the fixing rod 12, and an accommodating spring 123 is fixedly connected to the bottom wall of the accommodating groove 122. An accommodating block 124 is fixedly connected to the end of the accommodating spring 123 away from the bottom wall of the accommodating groove 122. A accommodating ring groove is formed on the hole wall of the fixing hole 112, and the accommodating ring groove is used for accommodating the accommodating block 124 and extends along the circumference of the fixing hole 112. When the accommodating block 124 is inserted into the accommodating ring groove, the fixing rod 12 can be pre-fixed in the fixing hole 112, that is, the fixing rod 12 can be pre-fixed on the support strip 11.

[0030] With reference to Figure 2 and Figure 4 , the support strip 11 is provided with a moving structure 2, and the moving structure 2 comprises a moving motor.

[0031] With reference to Figure 2 and Figure 5 , a moving gear 21 is fixedly connected to the driving shaft of the moving motor. A fixed rack 22 is slidingly connected in the support cavity 111, and the fixed rack 22 and the moving gear 21 are in mesh with each other. A fixed gear 23 is fixedly connected to the outer surface of the fixing rod 12, and the fixed gear 23 and the fixed rack 22 are in mesh with each other.

[0032] With reference to Figure 2 and Figure 5 , when the moving motor is started, the moving motor drives the moving gear 21 to rotate, so that the moving gear 21 drives the fixed rack 22 to move, and the fixed rack 22 drives the fixing rod 12 to rotate through the fixed gear 23, thereby realizing different included angles between the baffle 121 and the support strip 11.

[0033] With reference to Figure 2 and Figure 4 , the support strip 11 is provided with a stop structure 3, and the stop structure 3 comprises a stop cylinder.

[0034] With reference to Figure 6 , a stop strip 31 is fixedly connected to the driving shaft of the stop cylinder, and the stop strip 31 extends along the length direction of the support strip 11. A plurality of stop rings 32 are fixedly connected to the stop strip 31, and the inner wall of the stop ring 32 is used for accommodating the fixing rod 12. The staff drives the stop ring 32 to move along the length direction of the fixing rod 12 through the stop cylinder.

[0035] With reference to Figure 7The inner wall of the stop ring 32 is fixedly connected with a stop block 33. The outer surface of the fixed rod 12 is provided with a plurality of stop grooves 14. The plurality of stop grooves 14 are distributed in the circumferential direction of the outer surface of the fixed rod 12, and the stop grooves 14 are used for inserting the stop block 33. The outer surface of the fixed rod 12 is provided with a stop ring groove 141 communicating with the plurality of stop grooves 14. The stop ring groove 141 extends in the circumferential direction of the fixed rod 12, and the stop ring groove 141 is used for inserting the stop block 33. The stop ring groove 141 is located on the side of the stop groove 14 close to the baffle 121.

[0036] Referring to Figure 7 The end surface of the fixed rod 12 away from the baffle 121 is provided with a through hole 142 for the stop block 33 to pass through. The through hole 142 extends in the length direction of the fixed rod 12, and the through hole 142 communicates with the stop ring groove 141. The stop block 33 can pass through the through hole 142 to separate from the fixed rod 12, so as to realize the disassembly of the fixed rod 12 and the stop ring 32.

[0037] Referring to Figure 7 The staff starts the stop cylinder, and the stop cylinder drives the stop ring 32 to move through the stop strip 31. The stop block 33 in the stop ring 32 can move from the stop groove 14 to the stop ring groove 141, so as to realize the rotation of the fixed rod 12 in the fixed hole 112. The stop block 33 in the stop ring 32 moves from the stop ring groove 141 to the stop groove 14, so as to realize the limiting of the stop ring 32 to the fixed rod 12, and avoid the rotation of the baffle 121 under the impact of the silt. The stop block 33 in the stop ring 32 sequentially separates from the fixed rod 12 at the stop groove 14, the stop ring groove 141 and the through hole 142, so as to realize the separation of the stop ring 32 and the fixed rod 12, so as to realize the replacement and maintenance of the baffle 121 by the staff.

[0038] Referring to Figure 2 And Figure 4 The support strip 11 is provided with a locking structure 4. The locking structure 4 comprises a locking motor.

[0039] Referring to Figure 2 And Figure 8 The driving shaft of the locking motor is fixedly connected with a locking gear 41. The locking gear 41 is meshingly connected with a locking strip 42. The locking strip 42 extends in the length direction of the support strip 11 and is slidingly connected in the support cavity 111. The locking strip 42 is located on the side of the fixed rack 22 away from the bottom of the sedimentation tank.

[0040] Referring to Figure 7 And Figure 8 The locking strip 42 is meshingly connected with a locking ring 43. The locking ring 43 is rotatably connected in the support cavity 111. The locking ring 43 is sleeved on the outer surface of the fixed rod 12. The locking ring 43 is provided with a locking hole 44 for the stop block 33 to pass through. The locking ring 43 is located on the side of the stop ring 32 away from the bottom of the sedimentation tank.

[0041] With reference to Figure 7 and Figure 8 , the staff drives the locking motor, and the locking motor drives the locking ring 43 to rotate through the locking strip 42, so that the locking hole 44 is passed through the stop block 33, so as to realize the disengagement of the fixed rod 12 from the fixed hole 112.

[0042] With reference to Figure 2 and Figure 9 , the inner wall of the supporting cavity 111 is fixedly connected with a supporting block, and a plurality of movable strips 15 are slidingly connected on the supporting block, and the plurality of movable strips 15 slide in the vertical direction. The surface of the fixed rack 22 is provided with a plurality of movable holes 151 for inserting the movable strips 15, and the plurality of movable holes 151 are arrayed along the length direction of the fixed rack 22. The surface of the locking strip 42 is provided with a movable groove 152 for inserting the movable strip 15, and the locking strip 42 is located on the side of the fixed rack 22 away from the bottom of the battery.

[0043] With reference to Figure 9 , the groove wall of the movable groove 152 is integrally formed with two movable blocks 153, and the two movable blocks 153 are respectively located on the opposite sides of the movable groove 152. The surface of the movable block 153 is provided with a movable inclined surface 154, and the distance between the movable inclined surface 154 and the bottom wall of the movable groove 152 gradually decreases in the direction from the movable block 153 to the other movable block 153, at this time the movable strip 15 can move between the outer surface of the fixed rack 22 and the bottom wall of the movable groove 152 along the movable inclined surface 154.

[0044] With reference to Figure 7 and Figure 9 , the staff first drives the locking motor to move the locking strip 42, so that the movable groove 152 is aligned with the movable hole 151, and the movable strip 15 can move from the movable hole 151 to the movable groove 152, that is, the end face of the movable strip 15 close to the bottom wall of the sedimentation tank abuts from the outer surface of the locking strip 42 to the bottom wall of the movable groove 152, at this time the locking ring 43 is always blocked from the through hole 142 to limit the stop block 33 from directly disengaging from the through hole 142, and the staff drives the fixed rack 22 to move through the moving motor to realize the rotation of the fixed rod 12. That is, the staff needs to first block the through hole 142 with the locking ring 43, and then the staff can start the moving motor to realize the rotation of the fixed rod 12.

[0045] With reference to Figure 7 and Figure 9 , the staff needs to move the locking strip 42, so that the movable strip 15 moves from one side of the movable groove 152 to the other side of the movable groove 152, at this time the locking ring 43 does not block the through hole 142, that is, the fixed rod 12 can be disengaged.

[0046] The implementation principle of the mud scraping device is as follows: first, the staff starts the locking cylinder, and the locking cylinder drives the locking ring 32 to move through the locking strip 31, the locking block 33 moves from the locking groove 14 to the locking ring groove 141, and the staff starts the locking motor, and the locking motor drives the locking strip 42 to move, and the movable strip 15 moves to the movable groove 152, then the staff starts the moving motor, the moving motor drives the fixed rod 12 to rotate through the moving rack, the angle of the baffle 121 is adjusted, finally the staff starts the locking cylinder again, the locking cylinder drives the locking ring 32 to move, the locking block 33 moves from the locking ring groove 141 to the locking groove 14, the locking ring 32 limits the fixed rod 12, and the staff starts the locking motor, the locking motor drives the locking strip 42 to move, the movable strip 15 moves from the movable groove 152 to the outer surface of the locking strip 42, and the movable strip 15 is reset.

[0047] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the usual meaning understood by a person with ordinary skill in the art to which the present application pertains. The terms "first", "second", "third" and the like used in the specification and claims of the present application do not denote any order, number or importance, but are used to distinguish different components. The terms "one" or "an" and the like do not denote a quantity limitation, but mean that there is at least one. The terms "include" or "contain" and the like mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the design concept of the present application shall be included in the protection scope of the present application.

Claims

1. A mud scraping device, comprising a support frame (1), a driving structure (13) provided on the support frame (1), a support bar (11) provided on the driving structure (13), the driving structure (13) being used to drive the support bar (11) to rotate, a plurality of baffles (121) provided on the support bar (11), characterized in that: The baffle (121) is provided with a fixing rod (12), the support bar (11) is provided with a fixing hole (112) for inserting the fixing rod (12), the fixing rod (12) is provided with a fixing gear (23), the support bar (11) is provided with a fixing rack (22) for engaging with the fixing gear (23), and the support bar (11) is provided with a moving structure (2) for driving the fixing rack (22) to move.

2. A mud scraping device according to claim 1, characterized in that: The support bar (11) is provided with a stop structure (3), and the stop structure (3) is provided with a stop ring (32). The stop structure (3) drives the stop ring (32) to move along the length direction of the fixed rod (12). A stop block (33) is provided on the inner wall of the stop ring (32). The fixed rod (12) is provided with a plurality of stop grooves (14), and the stop grooves (14) are for the stop blocks (33) to be inserted. The fixed rod (12) is provided with a stop ring groove (141) that connects the plurality of stop grooves (14); when the stop block (33) is inserted into the stop groove (14), the stop ring (32) limits the rotation of the fixed rod (12); when the stop block (33) is located in the stop ring groove (141), the fixed rod (12) can rotate.

3. A mud scraping device according to claim 2, characterized in that: The fixing rod (12) is provided with a through hole (142) connected to the stop ring groove (141), and the through hole (142) is used for the stop block (33) to separate from the fixing rod (12).

4. A mud scraping device according to claim 3, characterized in that: The support bar (11) is provided with a locking structure (4), the locking structure (4) is provided with a locking ring (43), and the locking structure (4) drives the locking ring (43) to seal the opening of the through hole (142).

5. The mud scraping device according to claim 4, characterized in that: The locking ring (43) is provided with a locking hole (44) for the stop block (33) to pass through, and the locking structure (4) is provided with a locking strip (42). The locking strip (42) and the locking ring (43) are engaged with each other, and the locking structure (4) is used to drive the locking strip (42) to slide.

6. The mud scraping device according to claim 5, characterized in that: The support bar (11) is slidably connected to a movable bar (15); the fixed rack (22) is provided with a plurality of movable holes (151) for inserting the movable bar (15); the locking bar (42) is provided with a movable groove (152) for inserting the movable bar (15); the locking bar (42) is located on the moving path of the movable bar (15); when the movable bar (15) is located in the movable groove (152), the movable bar (15) is separated from the movable hole (151); when the movable bar (15) is located in the movable hole (151), the movable bar (15) restricts the movement of the fixed rack (22).

7. The mud scraping device according to claim 6, characterized in that: A movable inclined surface (154) is provided on the groove wall of the movable groove (152), and the movable inclined surface (154) is arranged at an angle. The movable bar (15) can move along the movable inclined surface (154) between the movable groove (152) and the surface of the locking bar (42); when the movable bar (15) abuts against the surface of the locking bar (42), the movable bar (15) is located in the movable hole (151).

8. The mud scraping device according to claim 3, characterized in that: The fixing rod (12) is provided with a receiving groove (122), a receiving spring (123) is provided in the receiving groove (122), a receiving block (124) is provided on the receiving spring (123), and a receiving ring groove for inserting the receiving block (124) is provided on the fixing hole (112); when the receiving block (124) is inserted into the receiving ring groove, the fixing rod (12) is located on the support bar (11).