A multi-stage purification device for reclaimed sand used in precision casting

Abstract

The utility model relates to foundry sand purification technical field, especially a kind of for precision casting's reuse sand multistage purification device, including mixing bin, the inside of mixing bin is provided with transmission shaft;The front and rear ends of mixing bin are respectively provided with filter tank and speed reducer;The upper end of mixing bin is provided with adjusting frame;The outside of adjusting frame is provided with transmission rod connecting disc;The outside of transmission rod connecting disc is provided with connecting rod in a week;The outside of connecting rod is provided with stirring spiral piece.In the utility model, transmission shaft is driven by motor through speed reducer, so that stirring spiral piece rotates stirring, and sand material is pushed to filter tank, is filtered by multilayer filter plate, realizes the function of reuse sand efficient stirring feeding and multistage purification.

Description

Technical Field

[0001] This utility model relates to the field of sand purification technology for casting, and in particular to a multi-stage purification device for recycled sand used in precision casting. Background Technology

[0002] In the precision casting industry, the recycling of reusable sand is a key link in achieving resource conservation and production cost control. Reusable sand recovered after casting will be covered with impurities such as oxides and binder residues. If it is reused directly, it will seriously affect the precision and quality of castings. Therefore, it is necessary to purify it through a special cleaning device. The core goal of the research and development and application of reusable sand cleaning device is to remove contaminants from the surface of sand particles and restore the reusability of sand. At the same time, it meets the industry's development demands for environmentally friendly production and resource recycling, and has become an indispensable supporting equipment in the precision casting process.

[0003] Existing precision casting recycled sand cleaning devices struggle to achieve uniform mixing and sufficient action between the sand and cleaning medium during the mixing and cleaning process when dealing with large volumes of recycled sand. Impurities on the surface of the sand particles cannot be efficiently removed. At the same time, the feeding and conveying system is ill-suited to the continuous transfer of large quantities of sand, easily leading to congestion and poor flow. These two problems mutually restrict each other, creating a vicious cycle of insufficient mixing and cleaning and obstructed feeding and conveying. This directly results in low efficiency in the purification and processing of large quantities of recycled sand, failing to meet the industry's production demands for rapid recycling and efficient reuse of recycled sand. This has become a key factor restricting the efficiency of resource recycling in precision casting. Utility Model Content

[0004] In order to overcome the problem that existing precision casting recycled sand cleaning devices have low efficiency in large-scale recycled sand purification and processing due to the large amount of recycled sand and the difficulty in mixing, cleaning and feeding.

[0005] The technical solution of this utility model is as follows: a multi-stage purification device for recycled sand used in precision casting, comprising a mixing chamber, wherein a drive shaft is provided inside the mixing chamber; a filter tank and a reducer are respectively provided at the front and rear ends of the mixing chamber, and the output end of the reducer is connected to the drive shaft; an adjustment frame is provided at the upper end of the mixing chamber; a drive rod connecting plate is provided outside the adjustment frame, and the drive rod connecting plate is fixedly connected to the drive shaft; a connecting rod is provided around the outer side of the drive rod connecting plate, and the connecting rod is fixedly connected to the drive rod connecting plate; stirring blades are provided outside the connecting rod, and the stirring blades are fixedly connected to each other by bolts.

[0006] Preferably, the agitator blades are connected end-to-end to form a spiral agitator structure; the input end of the filter tank is connected to the output end of the agitator chamber.

[0007] Preferably, the filter tank is equipped with a filter plate inside, and the filter plate is sealed to the inner wall of the filter tank by a groove; the filter plate is composed of a multi-layer filter screen structure.

[0008] Preferably, a motor is provided on one side of the reducer, and the output end of the motor is connected to the input end of the reducer.

[0009] Preferably, a bushing is provided on the outer side of the middle section of the drive shaft, and the drive shaft and the bushing are rotatably connected by a bearing.

[0010] Preferably, both ends of the adjusting frame are fixedly connected to the mixing chamber; a lifting screw is provided at the upper end of the housing of the bushing.

[0011] Preferably, the lower end of the lifting screw is rotatably connected to the housing of the bushing, and the lifting screw is threadedly connected to the internal hole of the adjusting frame.

[0012] The beneficial effects of this utility model are:

[0013] 1. The motor, reducer, drive shaft, drive rod connecting plate, connecting rod and stirring screw are sequentially connected. The motor power is transmitted to the drive shaft after being adjusted by the reducer, which drives the spiral stirring screw to rotate. This not only realizes the efficient mixing and cleaning of recycled sand, but also completes automatic feeding through the spiral propulsion force, which solves the problem of asynchronous mixing and conveying and low efficiency when the amount of recycled sand is large.

[0014] 2. The bushing on the outside of the middle section of the drive shaft is rotatably connected to the drive shaft through bearings. The bushing provides a stable intermediate support for the drive shaft, reducing rotational sway. At the same time, the bearings reduce frictional losses, and the independent housing structure of the bushing facilitates disassembly and maintenance, thus solving the problems of poor rotational stability and cumbersome maintenance of the drive shaft.

[0015] 3. The filter plate is sealed to the inner wall of the filter tank through a groove to prevent sand leakage. The filter plate adopts a multi-layer filter screen structure to achieve multi-stage precise filtration and improve the purity of the recycled sand. At the same time, the lifting screw cooperates with the adjustment frame and bushing to enhance the stability of the bushing support and further ensure the overall reliability of the equipment operation. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention.

[0017] Figure 2 The diagram shown is a frontal three-dimensional structural schematic of the present invention.

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the drive shaft and stirring screw assembly of this utility model.

[0019] Figure 4The diagram shown is a three-dimensional structural illustration of the combination of the adjusting frame, bushing, and lifting screw of this utility model.

[0020] In the attached diagram, the following are the reference numerals: 101, mixing chamber; 102, adjusting frame; 103, bushing; 104, lifting screw; 105, reducer; 106, motor; 107, filter tank; 108, filter plate; 201, drive shaft; 202, stirring screw blade; 203, drive rod connecting plate; 204, connecting rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] refer to Figure 1-4 The structure shown is a multi-stage purification device for recycled sand used in precision casting, including a mixing chamber 101, with a drive shaft 201 inside the mixing chamber 101; a filter tank 107 and a reducer 105 are respectively provided at the front and rear ends of the mixing chamber 101, and the output end of the reducer 105 is connected to the drive shaft 201; an adjusting frame 102 is provided at the upper end of the mixing chamber 101; a drive rod connecting plate 203 is provided outside the adjusting frame 102, and the drive rod connecting plate 203 is fixedly connected to the drive shaft 201; a connecting rod 204 is provided around the outer side of the drive rod connecting plate 203, and the connecting rod 204 is fixedly connected to the drive rod connecting plate 203; stirring blades 202 are provided outside the connecting rod 204, and the stirring blades 202 are fixedly connected to each other by bolts.

[0023] This device forms a complete recycling sand purification process chain, effectively solving the problems of existing precision casting recycling sand cleaning devices, such as difficulties in stirring, cleaning and feeding due to large amounts of recycled sand, and low efficiency in large-scale recycling sand purification processing. At the same time, the structural design of the bushing 103 improves the rotational stability of the drive shaft 201 and the convenience of maintenance and repair.

[0024] The workflow is as follows: After the motor 106 starts, its output power is transmitted to the input end of the reducer 105. After the speed is adjusted by the reducer 105, the power is transmitted from its output end to the drive shaft 201. The bushing 103 on the outside of the middle section of the drive shaft 201 provides stable support for the drive shaft 201 through bearings, reducing the shaking of the drive shaft 201 during rotation. At the same time, the independent housing structure of the bushing 103 facilitates subsequent disassembly, reducing the difficulty of maintenance and repair of the drive shaft 201. The drive shaft 201 drives the transmission rod connecting plate 203, which is fixedly connected to it, to rotate synchronously. 203 drives the connecting rod 204, which is fixedly connected to the outer side, to rotate. The connecting rod 204 drives the external stirring screw 202 to rotate inside the mixing chamber 101, thereby achieving the stirring and cleaning of the recycled sand. At the same time, the stirring screw 202 pushes the stirred recycled sand to the front end of the mixing chamber 101, and enters the filter tank 107 through the output end of the mixing chamber 101. After passing through the filter plate 108, it completes multi-stage filtration and purification. The entire process integrates stirring, feeding, filtration and stable support of the drive shaft into one unit, which not only improves the purification efficiency of large-volume recycled sand, but also ensures the long-term stable operation of the equipment.

[0025] To address the problems of existing recycled sand washing devices, such as easy shaking of the drive shaft, cumbersome maintenance and repair, sand leakage during filtration, incomplete filtration, and fluctuations in mixing efficiency due to unstable power transmission, reference was made to... Figures 2-4 The structure shown is as follows:

[0026] Furthermore, the agitator blades 202 are connected end to end to form a spiral agitator structure; the input end of the filter tank 107 is connected to the output end of the agitator chamber 101.

[0027] The spiral stirring blades 202, connected end to end, form a spiral stirring structure. When the drive shaft 201 drives the connecting rod 204 to rotate, the spiral stirring blades 202 can thoroughly stir the recycled sand at different positions in the mixing chamber 101, ensuring that the recycled sand and the cleaning medium are in full contact and improving the uniformity of stirring and cleaning. At the same time, the rotation of the spiral structure generates a continuous propulsive force, which stably pushes the stirred recycled sand to the input end of the filter tank 107 connected to the output end of the mixing chamber 101, realizing the synchronous connection between stirring and cleaning and feeding and conveying, and preventing the recycled sand from accumulating in the mixing chamber 101.

[0028] Furthermore, a filter plate 108 is provided inside the filter tank 107, and the filter plate 108 is sealed to the inner wall of the filter tank 107 by a groove; the filter plate 108 is composed of a multi-layer filter screen structure.

[0029] The filter plate 108 is connected to the inner wall of the filter tank 107 by a slotted seal, which makes the edge of the filter plate 108 fit tightly against the tank wall, completely blocking the channel for recycled sand to leak out from the gap between the filter plate 108 and the tank wall, thus avoiding material loss and impurity residue during the filtration process. At the same time, the filter plate 108 is composed of a multi-layer filter screen structure. The pore size of the multi-layer filter screen gradually decreases along the flow direction of the recycled sand. When the recycled sand passes through each layer of filter screen in turn, impurities of different particle sizes are intercepted step by step, realizing fine multi-stage filtration of recycled sand and greatly improving the purity of the purified recycled sand.

[0030] Furthermore, a motor 106 is provided on one side of the reducer 105, and the output end of the motor 106 is connected to the input end of the reducer 105.

[0031] The motor 106 is connected to the input of the reducer 105 via a transmission connection. The motor 106 provides continuous power as a power source. The reducer 105 reduces and adjusts the high-speed output of the motor 106 and simultaneously amplifies the torque. The adjusted and stable power is then transmitted to the drive shaft 201 through its output, ensuring that the drive shaft 201 always rotates at a speed and sufficient torque to meet the stirring requirements. This avoids the stirring screw 202 from rotating erratically due to power fluctuations, thus ensuring stable stirring and cleaning efficiency.

[0032] Furthermore, a bushing 103 is provided on the outer side of the middle section of the drive shaft 201, and the drive shaft 201 and the bushing 103 are rotatably connected by a bearing.

[0033] Specifically, the bushing 103 on the outside of the middle section of the drive shaft 201 forms an intermediate support for the drive shaft 201, dispersing the force at both ends of the drive shaft 201, reducing radial sway when the drive shaft 201 rotates, and improving the overall rotational stability of the drive shaft 201. At the same time, the drive shaft 201 and the bushing 103 are rotatably connected by a bearing, which converts the sliding friction between the two into rolling friction, significantly reducing rotational resistance and component wear. In addition, the bushing 103 is an independent shell structure, so when maintaining the drive shaft 201, the bushing 103 can be removed separately to expose the middle section of the drive shaft 201 without disassembling the entire mixing chamber 101, which significantly improves the convenience of maintenance and repair.

[0034] Furthermore, the two ends of the adjusting frame 102 are fixedly connected to the mixing chamber 101; a lifting screw 104 is provided on the upper end of the housing of the bushing 103.

[0035] The adjusting frame 102 is fixedly connected to the mixing chamber 101 at both ends, forming a stable support structure on the upper part of the mixing chamber 101, providing an installation reference for the bushing 103. The lifting screw 104 provided on the upper part of the bushing 103 housing cooperates with the adjusting frame 102. The lifting screw 104 can be used to assist in fixing the installation position of the bushing 103, further enhancing the stability of the bushing 103 in supporting the transmission shaft 201 and preventing the bushing 103 from shifting during equipment operation.

[0036] Furthermore, the lower end of the lifting screw 104 is rotatably connected to the housing of the bushing 103, and the lifting screw 104 is threadedly connected to the internal hole of the adjusting frame 102.

[0037] The lower end of the lifting screw 104 is rotatably connected to the housing of the bushing 103, and the lifting screw 104 is threadedly connected to the internal hole of the adjusting frame 102. When the lifting screw 104 is rotated, the force generated by the threaded transmission can finely adjust the position of the housing of the bushing 103, ensuring the coaxiality of the bushing 103 and the transmission shaft 201, further optimizing the support effect of the bushing 103 on the transmission shaft 201, reducing the eccentric sway when the transmission shaft 201 rotates, and improving the transmission stability.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-stage purification device for recycled sand used in precision casting, characterized in that: The system includes a mixing chamber (101), inside which a drive shaft (201) is installed; a filter tank (107) and a reducer (105) are respectively installed at the front and rear ends of the mixing chamber (101), and the output end of the reducer (105) is connected to the drive shaft (201); an adjustment frame (102) is installed at the upper end of the mixing chamber (101); a drive rod connecting plate (203) is installed on the outside of the adjustment frame (102), and the drive rod connecting plate (203) is fixedly connected to the drive shaft (201); a connecting rod (204) is installed around the outer side of the drive rod connecting plate (203), and the connecting rod (204) is fixedly connected to the drive rod connecting plate (203); a stirring screw (202) is installed on the outside of the connecting rod (204), and the stirring screws (202) are fixedly connected to each other by bolts.

2. The multi-stage purification device for recycled sand in precision casting according to claim 1, characterized in that: The stirring screws (202) are connected end to end to form a spiral stirring structure; the input end of the filter tank (107) is connected to the output end of the stirring chamber (101).

3. The multi-stage purification device for recycled sand in precision casting according to claim 1, characterized in that: The filter tank (107) is equipped with a filter plate (108) inside, and the filter plate (108) is sealed to the inner wall of the filter tank (107) by a groove; the filter plate (108) is composed of a multi-layer filter screen structure.

4. A multi-stage purification device for recycled sand in precision casting according to claim 1, characterized in that: A motor (106) is provided on one side of the reducer (105), and the output end of the motor (106) is connected to the input end of the reducer (105) in a transmission connection.

5. A multi-stage purification device for recycled sand in precision casting according to claim 1, characterized in that: A bushing (103) is provided on the outer side of the middle section of the drive shaft (201), and the drive shaft (201) and the bushing (103) are rotatably connected by a bearing.

6. A multi-stage purification device for recycled sand in precision casting according to claim 5, characterized in that: The two ends of the adjusting frame (102) are fixedly connected to the mixing chamber (101); the upper end of the housing of the bushing (103) is provided with a lifting screw (104).

7. A multi-stage purification device for recycled sand in precision casting according to claim 6, characterized in that: The lower end of the lifting screw (104) is rotatably connected to the housing of the bushing (103), and the lifting screw (104) is threadedly connected to the internal hole of the adjusting frame (102).

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