A sand mould scrap continuous cleaning apparatus

Abstract

This invention relates to a continuous cleaning device for molding sand, specifically for cleaning and refurbishing. The device comprises multiple parallel rollers for agitating and cleaning the molding sand. Each roller has a material inlet and outlet at each end. All rollers are inclined so that the material inlet of each roller is higher than its outlet. Adjacent rollers are staggered so that the material inlet of the next roller is lower than the material outlet of the previous roller. Each roller has a permeable conveying ramp at its tail end. The upper end of the ramp corresponds to the water outlet of the corresponding roller, and the lower end extends above the material inlet of the adjacent roller. This continuous cleaning device, through its ingenious layout design, can automatically and continuously complete different cleaning tasks for molding sand.

Description

Technical Field

[0001] This utility model relates to the field of molding sand renovation and cleaning technology, and in particular to a continuous cleaning equipment for sand mold fragments. Background Technology

[0002] As is well known, sand molds are usually made of natural or synthetic materials (such as quartz sand) and one or more binders (such as water glass or chemical binders). After casting, the sand mold is destroyed to remove the casting, so it is a consumable mold technology. Sand refurbishment is a cost-saving and environmentally friendly technology based on the refurbishment and reuse of these broken sand molds. An important step is to clean the binder and some additives off the old sand.

[0003] Stirring during the cleaning process can improve cleaning efficiency and completeness. Compared with motor stirring, drum stirring is more suitable for large-scale cleaning operations of old molding sand. As shown in the drum mixer disclosed in Chinese Utility Model Patent No. CN215241846U, there are many types of existing drum mixers, but most of them are single-task stirring. However, the cleaning process of this application requires water washing, acid washing and re-water washing of molding sand, which has multiple different continuous tasks. In order to ensure the continuity, convenience and automation of cleaning, it is necessary to develop and manufacture new continuous cleaning equipment based on drum stirring. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology and solve the existing technical problems, this utility model discloses a continuous sand molding material cleaning device, which can automatically and continuously complete different cleaning tasks for molding sand through ingenious layout design.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A continuous washing device for sand mold crushing includes multiple roller devices arranged side by side for stirring and washing sand mold crushing. Each roller device includes a roller body with a material inlet and a material outlet at each end. All roller bodies are inclined so that the material inlet of each roller body is higher than the material outlet. Adjacent roller bodies are staggered so that the material inlet of the later roller body is lower than the material outlet of the previous roller body. Each roller body has a water-permeable conveying inclined plate at its tail end. The high end of the conveying inclined plate is located below the material outlet of the corresponding roller body, and the low end of the conveying inclined plate extends above the material inlet of the adjacent roller body.

[0007] Furthermore, the drum device is provided in three parts, which are used sequentially for water washing, acid washing and re-water washing.

[0008] Furthermore, a screw feeder is mounted on the first end of the roller body, and the lower end of the corresponding conveying inclined plate extends to the feed inlet of the screw feeder. The discharge end of the screw feeder corresponds to the material inlet of the roller body.

[0009] Furthermore, baffles are provided on the high-end edge and both sides of the conveying inclined plate, and the conveying inclined plate is composed of an upper layer of permeable cloth and a lower layer of metal mesh plate.

[0010] Furthermore, a liquid collection tank is provided below the conveying inclined plate.

[0011] Furthermore, a vibration motor is installed on the upper lower plate surface of the conveying sloping plate.

[0012] Furthermore, the roller body is provided with multiple baffle groups spaced apart along the axial direction. Each baffle group includes two annular baffles spaced apart and arranged side by side. Multiple grinding bodies are provided between the corresponding two annular baffles. The outer edge of the annular baffle is sealed and fixed to the inner wall of the roller body. The inner wall of the roller body located between two adjacent baffle groups and between the end face of the roller body and the corresponding baffle group is provided with multiple lifting plates evenly distributed along the circumference of the roller body. The surface of the lifting plate is fixed perpendicularly to the inner wall of the roller body.

[0013] Furthermore, the roller device also includes a roller support assembly for rolling support of the roller body, and a roller drive assembly for driving the roller body to roll.

[0014] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0015] The sand molding crushing continuous cleaning equipment disclosed in this utility model arranges multiple roller devices that perform different cleaning tasks side by side to minimize the space occupation over long distances. A conveying ramp is set between adjacent roller devices to transfer the sand cleaning task. Through the high and low inclination design of the roller body and the conveying ramp, the automatic and continuous winding feeding of the sand is achieved. In addition, the conveying ramp can drain the cleaning waste liquid during the feeding process, making it easier for the sand to be cleaned when it is transferred to the next roller device for the cleaning task, thereby improving the cleaning efficiency and effect. Attached Figure Description

[0016] Figure 1 This is a top view of the implementation structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the end face layout of the embodiment structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the roller device;

[0019] Figure 4 yes Figure 3A schematic diagram of the AA-direction cross-section structure.

[0020] In the diagram: 1. Roller assembly; 101. Roller body; 102. Material / water inlet; 103. Material / water outlet; 104. Annular baffle; 105. Grinding body; 106. Lifting plate; 107. Roller drive assembly; 108. Roller support assembly; 2. Conveying inclined plate; 3. Screw feeder; 4. Liquid collection tank. Detailed Implementation

[0021] The technical solution of this utility model will now be described with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicating directions or positional relationships, are only used to correspond to the accompanying drawings of this utility model for ease of description, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0022] Combined with appendix Figure 1-2 The continuous cleaning equipment for sand mold fragments includes multiple roller devices 1 arranged side by side for stirring and cleaning sand mold fragments. There can be three roller devices 1, which are used for water washing, acid washing and re-water washing in sequence. It can also be adjusted according to actual cleaning needs. For example, five roller devices 1 can be set, two for water washing, two for acid washing and one for re-water washing.

[0023] like Figure 3 and Figure 4As shown, the drum device 1 includes a drum body 101 with a material inlet 102 and a material outlet 103 at both ends. Both the old molding sand and the cleaning fluid enter through the material inlet 102 of the drum body 101. All drum bodies 101 are inclined so that the material inlet 102 of each drum body 101 is higher than the material outlet 103, ensuring that the old molding sand and cleaning fluid can move continuously along the axial direction of the drum body 101 for cleaning operations. As needed, multiple baffle groups are spaced axially inside the drum body 101. Each baffle group includes two annular baffles 104 spaced apart side-by-side, and multiple grinding bodies 105 are provided between the corresponding two annular baffles 104. The annular baffles 104 can block the grinding bodies 105, preventing them from moving to other grinding processes when the drum body 101 rotates, and further preventing leakage from the material outlet 103. The grinding bodies 105 are metal spheres, generally iron balls. 05. Grinding with molding sand can thoroughly remove stubborn adhesives, greatly improving cleaning efficiency. The outer edge of the annular baffle 104 is sealed and fixed to the inner wall of the roller body 101. When the tilt angle of the roller body 101 is small, the surface of the annular baffle 104 can also be set as a mesh surface, which facilitates the direct passage of water and gravel without large tilting and accumulation. Between two adjacent baffle groups and between the end face of the roller body 101 and the corresponding baffle group, the inner wall of the roller body 101 is provided with multiple lifting plates 106 evenly distributed around the circumference of the roller body 101. The surface of the lifting plate 106 is fixed perpendicularly to the inner wall of the roller body 101. When the lifting plate 106 rotates with the roller body 101, it can thoroughly clean the molding sand by lifting it. In addition, the roller device 1 also includes a roller support assembly 108 for rolling support of the roller body 101 and a roller drive assembly 107 for driving the roller body 101 to roll.

[0024] Adjacent rollers 101 are staggered end-to-end, so that the material inlet 102 of the subsequent roller 101 is lower than the material outlet 103 of the preceding roller 101. A permeable conveying ramp 2 is mounted at the tail end of each roller 101. As needed, baffles are provided on the high-end edge and side edges of the upper surface of the conveying ramp 2 to prevent molding sand leakage. The conveying ramp 2 consists of an upper permeable cloth and a lower metal mesh plate, facilitating the downward permeation and outflow of cleaning waste liquid during the conveying of molding sand. Furthermore, a liquid collection tank 4 is provided below the conveying ramp 2 to collect the outflowing cleaning waste liquid for subsequent environmental treatment. Additionally, a vibration motor is installed on the high-end lower surface of the conveying ramp 2, ensuring smooth material feeding. The high-end surface of the conveying ramp 2 is located below the material outlet 103 of the corresponding roller 101. The end plate extends above the material inlet 102 of the adjacent roller 101. Through the high and low inclination design of the roller 101 and the conveying inclined plate 2, the automatic continuity of the winding feeding of molding sand is achieved. As needed, a screw feeder 3 is installed at the first end of the roller 101. The lower end of the corresponding conveying inclined plate 2 extends to the feed inlet of the screw feeder 3. The discharge end of the screw feeder 3 corresponds to the material inlet 102 of the roller 101. Using the screw feeder 3 for transition feeding can ensure complete feeding and prevent material accumulation. At the same time, it is easy to control the feeding amount. The discharge end of the screw feeder 3 can be inserted into the material inlet of the roller 101 without contact. This is mainly to ensure that the screw feeder 3 is not affected by the movement when the roller 101 is rolling. Alternatively, the discharge end of the screw feeder 3 can be rotatably connected to the material inlet of the roller 101 through a slewing bearing to achieve a similar effect.

[0025] To implement the continuous sand molding waste cleaning equipment described in this utility model, it is only necessary to start the roller drive assembly 107 of each roller device 1 to drive the roller body 101 to rotate. Then, molding sand is added to the material water inlet 102 of the highest roller body 101. At the same time, corresponding water or acid is continuously added to the material water inlet 102 of the roller body 101 that needs to be washed with water or acid. After the molding sand is cleaned by the multi-stage grinding process and lifting process of each roller device 1, it is discharged from the material water outlet 103 along with the waste liquid. When the waste liquid passes through the conveying inclined plate 2, it seeps downward and flows out, while the molding sand is conveyed to the next roller device 1 until the cleaning is completed and discharged.

[0026] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A continuous washing device for sand mold crushing materials, characterized in that: A roller device (1) comprising multiple rollers arranged side by side for stirring and cleaning sand mold crushed material, wherein the roller device (1) comprises a roller body (101) having a material inlet (102) and a material outlet (103) at its two ends respectively. All roller bodies (101) are inclined so that the material inlet (102) of each roller body (101) is higher than the material outlet (103). Adjacent roller bodies (101) are staggered so that the material inlet (102) of the latter roller body (101) is lower than the material outlet (103) of the former roller body (101). A permeable conveying inclined plate (2) is mounted at the tail end of each roller body (101). The high end plate of the conveying inclined plate (2) is located below the material outlet (103) of the corresponding roller body (101), and the low end plate of the conveying inclined plate (2) extends above the material inlet (102) of the adjacent roller body (101).

2. The continuous sand mold crushing and washing equipment according to claim 1, characterized in that: The roller device (1) has three rollers, which are used for water washing, acid washing and re-water washing in sequence.

3. The continuous sand mold crushing and washing equipment according to claim 1, characterized in that: The first end of the roller body (101) is equipped with a screw feeder (3), and the lower end of the corresponding conveying inclined plate (2) extends to the feed inlet of the screw feeder (3). The discharge end of the screw feeder (3) corresponds to the material inlet (102) of the roller body (101).

4. The continuous sand mold crushing and washing equipment according to claim 1, characterized in that: The upper edge and both sides of the conveying inclined plate (2) are provided with baffles. The conveying inclined plate (2) is composed of an upper layer of permeable cloth and a lower layer of metal mesh.

5. The continuous sand mold crushing and washing equipment according to claim 1, characterized in that: A liquid collection tank (4) is provided below the conveying inclined plate (2).

6. The continuous sand mold crushing and washing equipment according to claim 1, characterized in that: A vibration motor is installed on the upper lower plate surface of the conveying sloping plate (2).

7. The continuous sand mold crushing and washing equipment according to claim 1, characterized in that: The roller body (101) is provided with multiple baffle groups spaced apart along the axial direction. Each baffle group includes two annular baffles (104) spaced apart and arranged side by side. Multiple grinding bodies (105) are provided between the corresponding two annular baffles (104). The outer edge of the annular baffle (104) is sealed and fixed to the inner wall of the roller body (101). The inner wall of the roller body (101) located between two adjacent baffle groups and between the end face of the roller body (101) and the corresponding baffle group is provided with multiple lifting plates (106) evenly distributed along the circumference of the roller body (101). The plate surface of the lifting plate (106) is fixed perpendicularly to the inner wall of the roller body (101).

8. The continuous sand mold crushing and washing equipment according to claim 7, characterized in that: The roller device (1) further includes a roller support assembly (108) for rolling support of the roller body (101) and a roller drive assembly (107) for driving the roller body (101) to roll.

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