Automatic mud scraping device for the inner wall of a crusher

Abstract

The utility model discloses an automatic mud scraping device of the inner wall of crusher relates to the technical field of crusher, including the crusher shell, the top of crusher shell is equipped with the mud scraping mechanism, the mud scraping mechanism includes two fixed support frame, and the top fixed connection of two fixed support frame is limited to the top board, the upper surface fixed connection of limit top board has the strip protection shell, and the front surface limited of limit top board is provided with two limit support blocks. The utility model device provides power through the drive motor, can drive the stable sliding of mobile frame along the rectangular guide hole of limit support block, and further makes the scraper under the movable mounting plate reciprocatingly move along the inner wall of crusher shell, realizes the automatic scraping of inner wall sludge, does not need manual cleaning, and the problem that needs to stop when avoiding manual cleaning is greatly reduced manpower cost, guarantees the continuous operation of crushing operation, realizes efficient automatic mud cleaning.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, and in particular to an automatic sludge scraping device for the inner wall of a crusher. Background Technology

[0002] As the core equipment for material crushing and processing, the crusher is prone to generating sticky sludge due to compression and friction when processing sticky materials with high moisture content (such as sludge, wet clay, construction waste mud, etc.). This sludge will continue to adhere to the inner wall surface of the crusher shell, forming a layer of sludge that is difficult to fall off naturally.

[0003] Currently, the main method for cleaning the mud accumulated on the inner wall of crushers is still traditional manual cleaning. Operators need to manually scrape or wash the mud on the inner wall by opening the maintenance door and reaching in with cleaning tools after the crusher is stopped. This requires frequent shutdowns, which interrupts crushing operations and seriously affects production efficiency. On the other hand, manual cleaning relies on the operator's experience, which is not only labor-intensive and costly, but also makes it difficult to completely remove the mud accumulated deep inside the inner wall or in hidden areas. The residual mud will continue to accumulate with the operation.

[0004] To address this, we designed an automatic mud scraping device for the inner wall of the crusher, which can automatically and efficiently remove the mud accumulated on the inner wall of the crusher without affecting normal crushing operations. Utility Model Content

[0005] This utility model discloses an automatic sludge scraping device for the inner wall of a crusher. To achieve the above objective, this utility model adopts the following technical solution: An automatic sludge scraping device for the inner wall of a crusher includes a crusher housing, and a sludge scraping mechanism is installed on the top of the crusher housing; The sludge scraping mechanism includes two fixed support frames. A limiting top plate is fixedly connected to the top of the two fixed support frames. A strip-shaped protective shell is fixedly connected to the upper surface of the limiting top plate. Two limiting support blocks are symmetrically arranged on the front of the limiting top plate. A movable frame is slidably arranged on the surface of the limiting support blocks. A movable mounting plate is fixedly connected to the bottom of the two movable frames. A scraper is fixedly connected to the lower surface of the movable mounting plate. The scraper overlaps with the inner wall of the crusher housing.

[0006] In a preferred embodiment, a drive motor is fixedly mounted on one end of the strip-shaped protective shell. The rotating shaft of the drive motor extends into the interior of the strip-shaped protective shell and is fixedly connected to a drive shaft rod. Two worm gears are fixedly connected to the surface of the drive shaft rod, and the end of the drive shaft rod away from the drive motor is rotatably connected to the inner wall of the strip-shaped protective shell.

[0007] In a preferred embodiment, a rectangular guide hole is provided on the upper surface of the limiting support block. The position of the rectangular guide hole corresponds to that of the movable frame. The movable frame is slidably connected to the inner wall of the rectangular guide hole, and a positioning rack is fixedly connected to the side of the movable frame.

[0008] In a preferred embodiment, the inner wall of the strip-shaped protective shell is rotatably connected to two drive shafts, the ends of which extend to the outside of the strip-shaped protective shell and are fixedly connected to a positioning gear. The position of the positioning gear corresponds to that of the positioning rack, and the positioning gear meshes with the positioning rack.

[0009] In a preferred embodiment, a worm gear is fixedly connected to the surface of the transmission shaft, the position of the worm gear corresponds to the worm, and the two worms respectively mesh with the two worm gears.

[0010] In a preferred embodiment, four limiting mounting blocks are fixedly connected to the top of the crusher housing. The four limiting mounting blocks are symmetrically distributed on the surface of the crusher housing in pairs. Limiting mounting holes are opened on the surface of the limiting mounting blocks. The bottom of the fixed support frame is provided with a mounting slot, the size of which matches the limiting mounting block.

[0011] In a preferred embodiment, the limiting mounting block is inserted and installed inside the mounting slot. The surface of the limiting mounting block has bolt fixing holes, and the inner wall of the bolt fixing holes is threaded with positioning bolts. The positioning bolts fix the fixing support frame to the surface of the limiting mounting block. The inner wall of the mounting slot has positioning screw holes that match the positioning bolts.

[0012] As can be seen from the above, the automatic sludge scraping device for the inner wall of a crusher provided by this utility model has the following technical effects.

[0013] 1. The device is powered by a drive motor, which drives the moving frame to slide stably along the rectangular guide hole of the limiting support block. This causes the scraper under the movable mounting plate to reciprocate along the inner wall of the crusher shell, automatically scraping away the sludge from the inner wall. This eliminates the need for manual cleaning, significantly reducing labor costs and avoiding the need to stop the machine for manual cleaning, ensuring continuous crushing operations and achieving efficient automatic sludge removal. The scraper fits tightly against the inner wall of the crusher shell, maintaining a certain angle with the inner wall, ensuring even and comprehensive scraping of the sludge adhering to the inner wall. This effectively prevents sludge accumulation from reducing the crushing space, decreasing crushing efficiency, and making it difficult to clean after the sludge hardens, thus extending the equipment's service life.

[0014] 2. The sludge scraping mechanism is precisely matched with the limit mounting block at the top of the crusher shell through the mounting slot at the bottom of the fixed support frame. Then, the positioning bolt passes through the bolt fixing hole of the limit mounting block and is threaded into the positioning screw hole on the inner wall of the mounting slot, so as to achieve a firm fixation between the sludge scraping mechanism and the crusher shell. The installation structure has strong stability and the installation position of the scraper can be adjusted, so as to facilitate changing the working position of the scraper according to the cleaning condition of the inner wall of the crusher. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of Embodiment 1 of this utility model.

[0016] Figure 2 This is a side view of the structure of Embodiment 1 of this utility model.

[0017] Figure 3 This is a schematic diagram of the fixed support frame and limiting installation block structure of Embodiment 1 of this utility model.

[0018] Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle.

[0019] Figure 5 This is a schematic diagram of the overall structure of Example 2.

[0020] In the attached diagram: 1. Crusher casing; 2. Sludge scraping mechanism; 201. Fixed support frame; 202. Limiting top plate; 203. Strip-shaped protective shell; 204. Limiting support block; 205. Movable frame; 206. Movable mounting plate; 207. Scraper; 208. Drive motor; 209. Drive shaft; 210. Worm gear; 211. Rectangular guide hole; 212. Positioning rack; 213. Transmission shaft; 214. Positioning gear; 215. Worm gear; 216. Limiting mounting block; 217. Limiting mounting hole; 218. Mounting slot; 219. Positioning bolt; 220. Positioning screw hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 Example 1: An automatic sludge scraping device for the inner wall of a crusher. The device consists of a crusher housing 1 and a sludge scraping mechanism 2. The sludge scraping mechanism 2 includes two fixed support frames 201, which are symmetrically distributed on both sides of the top of the crusher housing 1. The fixed support frames 201 ensure the structural stability of the sludge scraping mechanism 2 during operation.

[0023] The limiting top plate 202 is horizontally fixed to the top of the two fixed support frames 201, forming the top bearing platform of the sludge scraping mechanism 2. Its front side is used to install the limiting support block 204, and the upper surface is fixed with a strip-shaped protective shell 203.

[0024] The strip-shaped protective shell 203 is fixed to the upper surface of the limiting top plate 202, covering the top area in a long strip shape. It houses the drive shaft 209, worm gear 210, worm wheel 215 and part of the transmission shaft 213, and can prevent dust and sludge generated during crusher operation from entering the internal transmission components.

[0025] Two symmetrical limit support blocks 204 are fixed to the front of the limit top plate 202, and rectangular guide holes 211 are opened on the surface. The positions of the rectangular guide holes 211 correspond one-to-one with the moving frame 205. The limit support blocks 204 provide sliding support for the moving frame 205, and the rectangular guide holes 211 precisely limit the sliding trajectory of the moving frame 205 to prevent deviation or shaking, and ensure that the moving frame 205 slides stably in the preset direction. This allows the scraper 207 to fit tightly against the inner wall of the crusher shell 1, improving the uniformity of mud cleaning.

[0026] The movable frame 205 is slidably disposed within the rectangular guide hole 211 of the limiting support block 204, with its top end located inside the hole, a positioning rack 212 fixed to its side, and its bottom end extending downward and fixed to the movable mounting plate 206. As the core of the transmission and actuation structure, the movable frame 205 can convert rotational power into linear sliding, driving the movable mounting plate 206 and the scraper 207 to move.

[0027] The movable mounting plate 206 is horizontally fixed to the bottom of the two movable frames 205, and its lower surface is fixed to the scraper 207. Its function is to synchronously transmit the movement of the two movable frames 205 to the scraper 207, ensuring that the scraper 207 remains horizontal when moving, avoiding tilting due to asynchronous movement on both sides. This ensures that the force between the scraper 207 and the inner wall is uniform, improving the sludge removal effect, and also prevents damage to components due to excessive local stress. Since the crusher usually crushes hard industrial waste, the residue on the surface of the scraper 207 will automatically fall into the crusher under gravity and will not be adsorbed in large quantities on the surface of the scraper 207. Therefore, there is no need for frequent cleaning of the scraper 207 surface by the staff, achieving the purpose of convenient maintenance.

[0028] The scraper 207 is fixed to the lower surface of the movable mounting plate 206 and is elongated, with its outer edge tightly overlapping the inner wall of the crusher housing 1. As a direct sludge scraping component, the tight overlap ensures no obvious gaps, effectively scraping off floating mud and slightly hardened sludge. It can also adapt to slight curvature changes in the inner wall, covering the entire sludge cleaning range of the inner wall, avoiding sludge accumulation that would reduce the crushing space and decrease efficiency, and extending the service life of the crusher housing 1.

[0029] The drive motor 208 is fixed to the outer side of one end of the strip-shaped protective shell 203, and the rotating shaft extends through the side wall of the shell into the interior, where it is fixed to the drive shaft rod 209. As a power source, the drive motor 208 provides continuous and stable power, enabling automatic sludge cleaning without manual operation, reducing labor costs, avoiding downtime issues during manual cleaning, ensuring continuous operation of the crusher, and improving production efficiency.

[0030] The drive shaft 209 is horizontally positioned inside the strip-shaped protective housing 203. One end is fixed to the rotating shaft of the drive motor 208, and the other end is rotatably connected to the inner wall of the housing via a bearing. Its function is to transmit power to the worm gear 210. The rotatable connection reduces frictional resistance and power loss, while ensuring horizontal rotation of the shaft and preventing changes in the meshing clearance between the worm gear 210 and the worm wheel 215, thus ensuring the accuracy of power transmission.

[0031] Two fixed sleeves of the worm gear 210 are mounted on the surface of the drive shaft 209, respectively meshing with two worm wheels 215. As the active transmission component, the worm gear 210 transmits power to the worm wheels 215, and the meshing with the worm wheels 215 is a speed reduction transmission, which makes the sliding frame 205 slide more smoothly, avoids damage to the scraper 207 due to collision due to excessive speed, and ensures sufficient scraping force to remove tightly attached sludge.

[0032] The drive shaft 213 is horizontally rotatably connected to the inner wall of the strip-shaped protective shell 203, with its axis parallel to the drive shaft 209. One end is located inside the shell, with a worm gear 215 fixed to its surface; the other end extends to the outside, with a fixed positioning gear 214. Its function is to realize the transmission of power from inside the shell to the outside. The rotatable connection ensures stable rotation, reduces vibration, and ensures smooth power transmission.

[0033] The worm gear 215 is fixed to one end inside the housing of the transmission shaft 213 and meshes with the worm 210. As a driven component, the worm gear 215 receives power and drives the transmission shaft 213 to rotate. It also has a self-locking characteristic, which can prevent the moving frame 205 from sliding in the reverse direction when the drive motor 208 stops, ensuring that the scraper 207 stays stably in the designated position and avoiding collisions or feeding interference in non-operational states.

[0034] The positioning gear 214 is fixed to one end of the transmission shaft 213 and meshes with the positioning rack 212 of the moving frame 205. Its core function is to convert the rotational motion into the linear motion of the moving frame 205. By meshing the teeth, the positioning rack 212 is driven to move, which can realize precise control of the reciprocating movement of the scraper 207 and improve the controllability of mud cleaning.

[0035] The positioning rack 212 is fixed to the side of the movable frame 205, with its length direction aligned with the sliding direction, and its teeth mesh with the positioning gear 214. As a linear transmission component, the positioning rack 212 smoothly transmits power to the movable frame 205.

[0036] Four limiting mounting blocks 216 are fixed to the top of the crusher housing 1, arranged in pairs symmetrically on both sides of the top (corresponding to the fixed support frame 201). Bolt fixing holes are provided on the surface, and their shape matches the mounting slots 218 at the bottom of the fixed support frame 201, allowing them to be inserted into the slots. The limiting mounting blocks 216 provide a precise positioning reference for the fixed support frame 201, enabling quick alignment through insertion, reducing installation and adjustment time, and improving overall installation efficiency.

[0037] The mounting slot 218 is located at the bottom of the fixed support frame 201. Its internal shape matches that of the limiting mounting block 216, and its inner wall has a positioning screw hole 220 that matches the positioning bolt 219. It achieves the initial positioning of the fixed support frame 201 through insertion and engagement, and at the same time provides an installation base for the positioning bolt 219, ensuring precise bolt connection and firmly fixing the fixed support frame 201.

[0038] The positioning bolt 219 is threaded into the bolt fixing hole of the limiting mounting block 216. One end passes through the hole and is threaded into the positioning screw hole 220 of the mounting slot 218, thus achieving a tight fixation between the fixed support frame 201 and the limiting mounting block 216. The threaded connection is robust and easy to disassemble. It can withstand operational vibration and reaction force, preventing loosening and displacement, and facilitates disassembly and assembly during subsequent maintenance, reducing maintenance difficulty.

[0039] The limiting mounting hole 217 is opened on the surface of the limiting mounting block 216 to provide an installation channel for the positioning bolt 219. The bolt’s radial movement is prevented by the threaded engagement between the hole wall and the bolt, which further improves the connection stability.

[0040] Example 2: The difference from Example 1 is that two hydraulic cylinders are fixedly installed on the front of the limiting top plate 202. The extension rods of the two hydraulic cylinders are fixedly connected to the upper surface of the movable mounting plate 206. The two hydraulic cylinders drive the scraper 207 to perform lifting and lowering operations to clean the inner wall of the crusher shell 1. It can be adjusted according to the actual site conditions to meet different working conditions.

[0041] Working principle: When the inner wall of the crusher housing 1 needs to be cleaned, the drive motor 208 is started, and its rotating shaft drives the drive shaft 209 to rotate inside the strip-shaped protective shell 203; the drive shaft 209 drives the worm gear 210 on the surface to rotate synchronously, and through the meshing of the worm gear and worm wheel, the power is transmitted to the worm wheel 215, which drives the transmission shaft 213 to rotate; the transmission shaft 213 drives the external positioning gear 214 to rotate, and through the meshing of the gear and rack, the rotation of the positioning gear 214 is converted into the horizontal movement of the positioning rack 212, which in turn drives the moving frame 205 to slide along the rectangular guide hole 211 of the limiting support block 204; the moving frame 205 drives the movable mounting plate 206 and the scraper 207 to move along the inner wall of the crusher housing 1 to scrape off the sludge; when the drive motor 208 switches the rotation direction, the transmission components move synchronously in the opposite direction, and the scraper 207 moves in the opposite direction to realize reciprocating sludge scraping, and finally complete the automatic and comprehensive cleaning of the sludge on the inner wall.

[0042] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An automatic mud scraping device for the inner wall of a crusher, comprising a crusher housing (1), characterized in that, A sludge scraping mechanism (2) is installed on the top of the crusher housing (1). The sludge scraping mechanism (2) includes two fixed support frames (201). The top ends of the two fixed support frames (201) are fixedly connected to a limiting top plate (202). A strip-shaped protective shell (203) is fixedly connected to the upper surface of the limiting top plate (202). Two limiting support blocks (204) are symmetrically arranged on the front of the limiting top plate (202). A movable frame (205) is slidably arranged on the surface of the limiting support block (204). A movable mounting plate (206) is fixedly connected to the bottom end of the two movable frames (205). A scraper (207) is fixedly connected to the lower surface of the movable mounting plate (206). The scraper (207) overlaps with the inner wall of the crusher housing (1).

2. An automatic wall scraping device for a crusher as claimed in claim 1, wherein, A drive motor (208) is fixedly installed at one end of the strip-shaped protective shell (203). The rotation shaft of the drive motor (208) extends into the interior of the strip-shaped protective shell (203) and is fixedly connected to a drive shaft (209). Two worm gears (210) are fixedly connected to the surface of the drive shaft (209), and the end of the drive shaft (209) away from the drive motor (208) is rotatably connected to the inner wall of the strip-shaped protective shell (203).

3. An automatic wall scraping device for a crusher as claimed in claim 2, wherein, The upper surface of the limiting support block (204) is provided with a rectangular guide hole (211). The position of the rectangular guide hole (211) corresponds to that of the movable frame (205). The movable frame (205) is slidably connected to the inner wall of the rectangular guide hole (211), and a positioning rack (212) is fixedly connected to the side of the movable frame (205).

4. An automatic sludge scraping device for the inner wall of a crusher according to claim 3, characterized in that, The inner wall of the strip-shaped protective shell (203) is rotatably connected to two transmission shafts (213). The ends of the transmission shafts (213) extend to the outside of the strip-shaped protective shell (203) and are fixedly connected to a positioning gear (214). The position of the positioning gear (214) corresponds to the positioning rack (212), and the positioning gear (214) meshes with the positioning rack (212).

5. An automatic sludge scraping device for the inner wall of a crusher according to claim 4, characterized in that, The surface of the transmission shaft (213) is fixedly connected with a worm wheel (215). The position of the worm wheel (215) corresponds to that of the worm (210), and the two worms (210) mesh with the two worm wheels (215) respectively.

6. An automatic sludge scraping device for the inner wall of a crusher according to claim 5, characterized in that, Four limiting mounting blocks (216) are fixedly connected to the top of the crusher housing (1). The four limiting mounting blocks (216) are symmetrically distributed on the surface of the crusher housing (1) in pairs. Limiting mounting holes (217) are opened on the surface of the limiting mounting blocks (216). The bottom of the fixed support frame (201) is provided with a mounting slot (218). The size of the mounting slot (218) matches the limiting mounting blocks (216).

7. An automatic sludge scraping device for the inner wall of a crusher according to claim 6, characterized in that, The limiting mounting block (216) is inserted into the mounting slot (218). The surface of the limiting mounting block (216) is provided with bolt fixing holes. The inner wall of the bolt fixing holes is threaded with positioning bolts (219). The positioning bolts (219) fix the fixing support frame (201) on the surface of the limiting mounting block (216). The inner wall of the mounting slot (218) is provided with positioning screw holes (220) that match the positioning bolts (219).

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