A coated sand feeding mechanism

Abstract

The utility model discloses a kind of film-coated sand feeding mechanisms, including hopper, flow control mechanism, discharge dredging mechanism and dredging auxiliary mechanism, the flow control mechanism includes adjusting pipe, through slot, rotating lever, flow block, rotating block and hydraulic cylinder, the discharge dredging mechanism includes dredging pipe, rotating sleeve, inner rotating frame, screw rod, screw sleeve, inner moving frame and layer rotary plate, flow control mechanism realizes the controllable intercommunication of through slot and hopper, solves the problem that traditional valve is easy to block, provides more accurate flow control ability, discharge dredging mechanism converts rotary motion into the linear movement of inner moving frame, drives layer rotary plate to dredge, solves the problem that hopper bottom lacks dredging mode, prevents film-coated sand bridge or agglomerate blockage.

Description

Technical Field

[0001] This utility model relates to the field of material feeding technology, and more specifically, to a coated sand feeding mechanism. Background Technology

[0002] In existing technologies, a type of coated sand feeding mechanism suffers from inconvenient flow control in the hopper due to easy valve clogging, and lacks a method for unclogging the bottom of the hopper. This problem seriously affects the efficiency and product quality of casting production.

[0003] Firstly, traditional coated sand feeding mechanisms generally use simple valve control systems. During long-term use, the valves are easily blocked due to the characteristics of the coated sand. Because coated sand contains binders, it is easy to form lumps or caking when the ambient humidity changes or the standing time is too long. When these lumps enter the valve area, they will cause the valve to fail to open and close normally, making flow control extremely difficult. Operators often need to stop the machine to deal with this, which not only wastes production time but may also damage the equipment.

[0004] Existing feeding mechanisms lack effective bottom clearing designs, making it impossible to clear bridging or funnel effects at the bottom of the hopper when coated sand bridging occurs. Particularly near the inner wall of the hopper and the discharge port, the coated sand easily hardens due to compaction or moisture, gradually obstructing the normal discharge channel. In such cases, operators typically need to manually clear the blockage by tapping the outer wall of the hopper or inserting tools, which is not only inefficient but also poses safety hazards. Utility Model Content

[0005] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a coated sand feeding mechanism to solve the technical problems mentioned in the background art, such as the inconvenience of hopper flow control due to easy valve blockage and the lack of a way to unclog the bottom of the hopper.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a coated sand feeding mechanism, comprising a hopper, a flow control mechanism, a discharge and unblocking mechanism, and an unblocking auxiliary mechanism. The flow control mechanism includes an adjusting pipe, a channel, a rotating rod, a flow block, a rotating block, and a hydraulic cylinder. The channel is disposed on the flow block, the flow block is rotatably installed inside the adjusting pipe, the rotating rod is installed at one end of the flow block, the rotating block is fixedly connected to the rotating rod, and one end of the rotating block is connected to the hydraulic cylinder. The rotation of the flow block connects the channel to the hopper. The discharge and unblocking mechanism includes a unblocking pipe, a rotating sleeve, an inner rotating frame, a screw, a screw sleeve, an inner shifting frame, and a layered rotating plate. The unblocking pipe is installed at the top end of the adjusting pipe. The top and bottom ends of the rotating sleeve are rotatably connected to the unblocking pipe and the bottom end of the hopper, respectively. The inner rotating frame is installed on the inner wall of the rotating sleeve, and the inner shifting frame is slidably installed on the inner wall of the unblocking pipe. The screw on the inner rotating frame is threadedly connected to the screw sleeve on the inner shifting frame. One end of the layered rotating plate is connected to the top end of the inner shifting frame.

[0007] The present invention is further configured such that the unblocking auxiliary mechanism includes a double-layer clamping ring, a clamping ring, a bidirectional spring rod, and positioning holes. The double-layer clamping ring is fixedly installed on the outer wall of the unblocking pipe, the clamping ring is installed at the bottom end of the rotating sleeve, and the clamping ring is rotatably installed inside the double-layer clamping ring. The bidirectional spring rod is installed on the clamping ring, and multiple sets of bidirectional spring rods are provided. Multiple sets of positioning holes are opened on the double-layer clamping ring, and the bidirectional spring rods extend into the positioning holes step by step, so that the rotating sleeve and the clamping ring rotate stably on the outer wall of the unblocking pipe.

[0008] The present invention is further configured such that a base plate is installed at the bottom end of the adjusting tube, and the base plate is fixedly installed at the required position, and one end of the hydraulic cylinder is rotatably connected to the base plate. The base plate provides a stable support foundation for the entire mechanism, and at the same time provides a rotation connection point for the hydraulic cylinder.

[0009] The present invention is further configured such that a discharge pipe is installed at one end of the regulating pipe, the output end of the discharge pipe is led to the required process, and the discharge pipe guides the material flow to the subsequent process, ensuring the directional conveying of materials and reducing material loss.

[0010] The present invention is further configured such that a support rod is installed at the top end of the bottom plate, and the top end of the support rod is fixedly connected to the side of the hopper. The support rod is fixedly connected to the side of the hopper to provide additional support for the hopper and improve the overall structural stability.

[0011] The present invention is further configured such that a rotating bearing is installed on the regulating tube, and the two ends of the flow block are connected to the rotating bearing. The rotating bearing supports the two ends of the flow block, reduces friction, ensures smooth rotation of the flow block, and extends its service life.

[0012] The present invention is further configured such that a limiting frame is installed on the inner wall of the unblocking pipe, and one end of the layer rotating plate is connected to the bottom end of the limiting frame. The limiting frame is connected to the layer rotating plate to limit the movement range of the layer rotating plate and improve the unblocking effect.

[0013] The present invention is further configured such that an directional groove is provided on the inner wall of the unblocking pipe, and the outer end of the inner moving frame is embedded in the directional groove for longitudinal sliding. The directional groove cooperates with the outer end of the inner moving frame to guide the inner moving frame to slide longitudinally and prevent rotation.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a coated sand feeding mechanism, which has the following beneficial effects: This utility model is equipped with a flow control mechanism. The hydraulic cylinder drives the rotating block, rotating rod and flow block to rotate precisely, realizing the controllable connection between the channel and the hopper. It solves the problem of easy clogging of traditional valves, provides more precise flow control capability, and the cooperation of the rotating bearing makes the flow block rotate smoothly, reduces friction, extends service life and ensures long-term operational reliability.

[0015] This utility model is equipped with a discharge and unblocking mechanism. The discharge and unblocking mechanism adopts a rotating sleeve, an inner rotating frame and a screw transmission system to convert the rotational motion into the linear movement of the inner moving frame, which drives the layer rotating plate to unblock. This solves the problem of the lack of unblocking methods at the bottom of the hopper, prevents the film-coated sand from bridging or clogging, and the directional groove guides the longitudinal sliding of the inner moving frame to ensure that the unblocking action is precise and controllable, thereby improving the unblocking efficiency.

[0016] This utility model is equipped with a dredging auxiliary mechanism. Through the cooperation of double-layer clamping rings, clamping rings, and multiple sets of bidirectional spring rods with positioning holes, it realizes multi-level positioning and stable rotation of the rotating sleeve on the outer wall of the dredging pipe, which enhances the reliability and operational accuracy of the dredging mechanism. It allows operators to flexibly adjust the dredging position according to the blockage situation, and improves the adaptability and ease of use of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model; Figure 2 This is a schematic diagram of the flow control mechanism in this utility model; Figure 3 This is a schematic diagram of the external fixing structure of the hopper in this utility model; Figure 4 This is a schematic diagram of the drainage and unblocking mechanism and the unblocking auxiliary mechanism in this utility model; Figure 5 This is a schematic diagram of the internal structure of the drainage and unblocking mechanism and the unblocking auxiliary mechanism in this utility model.

[0018] In the diagram: 1. Hopper; 2. Adjusting pipe; 3. Through groove; 4. Rotating rod; 5. Flow block; 6. Rotating block; 7. Hydraulic cylinder; 8. Unblocking pipe; 9. Rotating sleeve; 10. Inner rotating frame; 11. Screw; 12. Screw sleeve; 13. Inner shifting frame; 14. Layered rotating plate; 15. Double-layer clamping ring; 16. Clamping ring; 17. Bidirectional spring rod; 18. Positioning hole; 19. Base plate; 20. Discharge pipe; 21. Support rod; 22. Rotating bearing; 23. Limiting frame; 24. Orientation groove. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] Please see Figures 1-5 A coated sand feeding mechanism includes a hopper 1, a flow control mechanism, a discharge and unblocking mechanism, and an unblocking auxiliary mechanism. The flow control mechanism includes an adjusting pipe 2, a channel 3, a rotating rod 4, a flow block 5, a rotating block 6, and a hydraulic cylinder 7. The channel 3 is disposed on the flow block 5, which is rotatably mounted inside the adjusting pipe 2. The rotating rod 4 is mounted on one end of the flow block 5, and the rotating block 6 is fixedly connected to the rotating rod 4. One end of the rotating block 6 is connected to the hydraulic cylinder 7. The rotation of the flow block 5 connects the channel 3 to the hopper 1. The discharge and unblocking mechanism includes... The components include a dredging pipe 8, a rotating sleeve 9, an inner rotating frame 10, a screw 11, a screw sleeve 12, an inner shifting frame 13, and a layering plate 14. The dredging pipe 8 is installed at the top end of the regulating pipe 2. The top and bottom ends of the rotating sleeve 9 are rotatably connected to the bottom ends of the dredging pipe 8 and the hopper 1, respectively. The inner rotating frame 10 is installed on the inner wall of the rotating sleeve 9. The inner shifting frame 13 is slidably installed on the inner wall of the dredging pipe 8. The screw 11 on the inner rotating frame 10 is threadedly connected to the screw sleeve 12 on the inner shifting frame 13. One end of the layering plate 14 is connected to the top end of the inner shifting frame 13.

[0023] In this embodiment, the flow control mechanism controls the flow of coated sand through the coordinated operation of hydraulic cylinder 7, rotating block 6, and rotating rod 4. When feeding needs to be started, hydraulic cylinder 7 pushes rotating block 6, rotating block 6 drives rotating rod 4 to rotate, and flow block 5 connected to rotating rod 4 rotates in regulating pipe 2, so that the through groove 3 on flow block 5 is connected to hopper 1, allowing coated sand to flow out of hopper 1. When feeding needs to be stopped, hydraulic cylinder 7 retracts, driving the entire transmission chain to move in the opposite direction, so that through groove 3 is disconnected from hopper 1, stopping the material flow. This design supports the flow block 5 through the rotating bearing 22, ensuring stable and reliable rotation. The rotating sleeve 9 rotates, driving the inner rotating frame 10 to rotate. The screw 11 on the inner rotating frame 10 and the screw sleeve 12 on the inner moving frame 13 generate threaded transmission, causing the inner moving frame 13 to slide longitudinally along the directional groove 24 in the unblocking pipe 8. The layered rotating plate 14 connected to the top of the inner moving frame 13 moves up and down accordingly, stirring and unblocking the coating sand that may accumulate in the unblocking pipe 8, preventing material blockage and ensuring smooth flow.

[0024] The unblocking auxiliary mechanism includes a double-layer clamping ring 15, a receiving ring 16, a bidirectional spring rod 17, and a positioning hole 18. The double-layer clamping ring 15 is fixedly installed on the outer wall of the unblocking pipe 8. The receiving ring 16 is installed at the bottom end of the rotating sleeve 9 and is rotatably installed inside the double-layer clamping ring 15. The bidirectional spring rod 17 is installed on the receiving ring 16 and has multiple sets. Multiple sets of positioning holes 18 are opened on the double-layer clamping ring 15. The bidirectional spring rod 17 extends into the positioning holes 18 step by step, so that the rotating sleeve 9 and the receiving ring 16 rotate stably on the outer wall of the unblocking pipe 8.

[0025] In this embodiment, the double-layer clamping ring 15 is fixed to the outer wall of the unblocking pipe 8, the receiving clamping ring 16 is installed at the bottom of the rotating sleeve 9 and rotated inside the double-layer clamping ring 15, and multiple sets of bidirectional spring rods 17 are installed on the receiving clamping ring 16, which can extend into the positioning holes 18 on the double-layer clamping ring 15 step by step to form a stepped positioning, so that the rotating sleeve 9 can rotate stably on the outer wall of the unblocking pipe 8, while providing multi-level positioning capability, and the rotation angle and position can be adjusted according to the unblocking needs.

[0026] Please see Figures 1-5As a supplementary embodiment of the coated sand feeding mechanism for the flow control mechanism, discharge and dredging mechanism and dredging auxiliary mechanism: A base plate 19 is installed at the bottom end of the regulating pipe 2 and is fixedly installed in the required position. One end of the hydraulic cylinder 7 is rotatably connected to the base plate 19. A discharge pipe 20 is installed at one end of the regulating pipe 2 and the output end of the discharge pipe 20 leads to the required process. A support rod 21 is installed at the top end of the base plate 19 and is fixedly connected to the side of the hopper 1. A rotating bearing 22 is installed on the regulating pipe 2 and both ends of the flow block 5 are connected to the rotating bearing 22. A limiting frame 23 is installed on the inner wall of the dredging pipe 8 and one end of the layer rotating plate 14 is connected to the bottom end of the limiting frame 23. A directional groove 24 is opened on the inner wall of the dredging pipe 8 and the outer end of the inner moving frame 13 is embedded in the directional groove 24 for longitudinal sliding.

[0027] More specifically, the coated sand is stored in hopper 1, the flow control mechanism is in the closed state, the hydraulic cylinder 7 pushes the rotating block 6, and drives the flow block 5 to rotate through the rotating rod 4, so that the channel 3 is connected to hopper 1, and the coated sand begins to flow from hopper 1 into regulating pipe 2. The coated sand flows through regulating pipe 2 to discharge pipe 20, and finally to the subsequent process. When the material flow is found to be obstructed, the operator can rotate the rotating sleeve 9. Through the transmission of the inner rotating frame 10 and screw 11, the inner moving frame 13 drives the layer rotating plate 14 to move up and down, agitating and clearing the blocked material. During the operation, the bidirectional spring rod 17 of the clearing auxiliary mechanism cooperates with the positioning hole 18 to provide multi-level positioning capability, ensuring that the rotating sleeve 9 operates stably in different positions. After the task is completed, the hydraulic cylinder 7 retracts, drives the flow block 5 to rotate in the opposite direction, closes the channel 3, and stops the material flow.

[0028] In summary, during the use or operation of the overall equipment: When the flow control mechanism is required, it controls the flow of coated sand through the coordinated work of hydraulic cylinder 7, rotating block 6, and rotating rod 4. When feeding needs to be started, hydraulic cylinder 7 pushes rotating block 6, which in turn drives rotating rod 4 to rotate. The flow block 5 connected to rotating rod 4 rotates within regulating pipe 2, connecting the through groove 3 on flow block 5 to hopper 1, allowing coated sand to flow out of hopper 1. When feeding needs to be stopped, hydraulic cylinder 7 retracts, causing the entire transmission chain to move in the opposite direction, disconnecting the through groove 3 from hopper 1 and stopping the material flow. This design uses rotating bearing 22 to support flow block 5, ensuring stable and reliable rotation. When the unblocking mechanism is in operation, the rotating sleeve 9 rotates, driving the inner rotating frame 10 to rotate. The screw 11 on the inner rotating frame 10 and the screw sleeve 12 on the inner moving frame 13 generate threaded transmission, causing the inner moving frame 13 to slide longitudinally along the directional groove 24 inside the unblocking pipe 8. The layered rotating plate 14 connected to the top of the inner moving frame 13 moves up and down accordingly, stirring and unblocking any film-coated sand that may accumulate inside the unblocking pipe 8, preventing material blockage and ensuring smooth flow. When the unblocking auxiliary mechanism is in operation, the double-layer clamping ring 15 is fixed to the outer wall of the unblocking pipe 8, and the clamping ring 16 is installed at the bottom of the rotating sleeve 9 and rotatably installed inside the double-layer clamping ring 15. Multiple sets of bidirectional spring rods 17 are installed on the clamping ring 16 and can extend into the positioning holes 18 on the double-layer clamping ring 15 step by step to form a stepped positioning, allowing the rotating sleeve 9 to rotate stably on the outer wall of the unblocking pipe 8, while providing multi-level positioning capability, and the rotation angle and position can be adjusted according to unblocking needs.

[0029] The coated sand is stored in hopper 1. The flow control mechanism is in the closed state. The hydraulic cylinder 7 pushes the rotating block 6, which drives the flow block 5 to rotate through the rotating rod 4, so that the channel 3 is connected to hopper 1. The coated sand begins to flow from hopper 1 into regulating pipe 2. The coated sand flows through regulating pipe 2 to discharge pipe 20 and is finally led to the subsequent process. When the material flow is found to be obstructed, the operator can rotate the rotating sleeve 9. Through the transmission of the inner rotating frame 10 and screw 11, the inner moving frame 13 drives the layer rotating plate 14 to move up and down, agitating and clearing the blocked material. During the operation, the bidirectional spring rod 17 of the clearing auxiliary mechanism cooperates with the positioning hole 18 to provide multi-level positioning capability, ensuring that the rotating sleeve 9 operates stably in different positions. After the task is completed, the hydraulic cylinder 7 retracts, driving the flow block 5 to rotate in the opposite direction, closing the channel 3 and stopping the material flow.

[0030] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coated sand feeding mechanism, comprising a hopper (1), a flow control mechanism, a discharge and unblocking mechanism, and an unblocking auxiliary mechanism, characterized in that: The flow control mechanism includes an adjusting pipe (2), a through groove (3), a rotating rod (4), a flow block (5), a rotating block (6), and a hydraulic cylinder (7). The through groove (3) is set on the flow block (5), the flow block (5) is rotatably installed inside the adjusting pipe (2), the rotating rod (4) is installed at one end of the flow block (5), the rotating block (6) is fixedly connected to the rotating rod (4), and one end of the rotating block (6) is connected to the hydraulic cylinder (7). The discharge and unblocking mechanism includes an unblocking pipe (8), a rotating sleeve (9), an inner rotating frame (10), a screw (11), and a screw sleeve (8). 12) Inner moving frame (13) and layer rotating plate (14), unblocking pipe (8) is installed at the top end of regulating pipe (2), the top and bottom ends of rotating sleeve (9) are rotatably connected to the bottom ends of unblocking pipe (8) and hopper (1) respectively, inner rotating frame (10) is installed on the inner wall of rotating sleeve (9), inner moving frame (13) is slidably installed on the inner wall of unblocking pipe (8), screw (11) on inner rotating frame (10) is threadedly connected to screw sleeve (12) on inner moving frame (13), and one end of layer rotating plate (14) is connected to the top end of inner moving frame (13).

2. The coated sand feeding mechanism according to claim 1, characterized in that: The unblocking auxiliary mechanism includes a double-layer clamping ring (15), a receiving ring (16), a bidirectional spring rod (17), and a positioning hole (18). The double-layer clamping ring (15) is fixedly installed on the outer wall of the unblocking pipe (8). The receiving ring (16) is installed at the bottom end of the rotating sleeve (9). The receiving ring (16) is rotatably installed inside the double-layer clamping ring (15). The bidirectional spring rod (17) is installed on the receiving ring (16). The bidirectional spring rod (17) is provided with multiple sets. Multiple sets of positioning holes (18) are opened on the double-layer clamping ring (15). The bidirectional spring rod (17) extends into the positioning hole (18) step by step, so that the rotating sleeve (9) and the receiving ring (16) rotate stably on the outer wall of the unblocking pipe (8).

3. The coated sand feeding mechanism according to claim 1, characterized in that: The bottom end of the regulating pipe (2) is provided with a base plate (19), and the base plate (19) is fixedly installed in the required position, and one end of the hydraulic cylinder (7) is rotatably connected to the base plate (19).

4. The coated sand feeding mechanism according to claim 1, characterized in that: One end of the regulating pipe (2) is equipped with a discharge pipe (20), and the output end of the discharge pipe (20) is led to the required process.

5. The coated sand feeding mechanism according to claim 3, characterized in that: A support rod (21) is installed at the top end of the bottom plate (19), and the top end of the support rod (21) is fixedly connected to the side of the hopper (1).

6. The coated sand feeding mechanism according to claim 1, characterized in that: The regulating pipe (2) is equipped with a rotating bearing (22), and the two ends of the flow block (5) are connected to the rotating bearing (22).

7. The coated sand feeding mechanism according to claim 1, characterized in that: A limiting frame (23) is installed on the inner wall of the unblocking pipe (8), and one end of the layer plate (14) is connected to the bottom end of the limiting frame (23).

8. The coated sand feeding mechanism according to claim 1, characterized in that: The inner wall of the unblocking pipe (8) is provided with a directional groove (24), and the outer end of the inner moving frame (13) is embedded in the directional groove (24) to cooperate with the longitudinal sliding setting.

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