Foundry molding sand pretreatment device

Abstract

The utility model provides a foundry sand pretreatment device. The foundry sand pretreatment device comprises a treatment box, a dust collection cover and a material distribution assembly, the dust collection cover is detachably arranged at the top of the treatment box, a plurality of dust collection notches are formed in the bottom face of the dust collection cover, and an air guide pipe is arranged on the top face of the dust collection cover. A material guiding pipe and a filtering assembly are arranged in the treatment box, a material distributing channel is formed between the top end of the material guiding pipe and the bottom face of the dust collecting cover, and the filtering assembly is arranged between the outer wall of the material guiding pipe and the inner wall of the treatment box. The material distribution assembly comprises a bearing shaft, a material distribution ring and a plurality of material distribution plates, the bearing shaft is rotatably arranged in the material guide pipe, and auger blades are arranged on the side wall of the bearing shaft. A connecting disc is further arranged at the top end of the bearing shaft, the material distributing ring is rotatably arranged outside the material guiding pipe in a sleeving mode, and the multiple material distributing plates are annularly and evenly distributed on the circumferential side of the bearing shaft. According to the foundry molding sand pretreatment device disclosed by the utility model, dust removal and filtration of molding sand can be completed at one time, so that the pretreatment efficiency of the molding sand is improved.

Description

Technical Field

[0001] The utility model belongs to the field of casting-related equipment, in particular to a casting sand pretreatment device. Background Art

[0002] Molding sand is a commonly used molding material in the casting process. It is usually made by mixing raw sand, binders, and additives in a specific ratio. Because the ratio of each component in the molding sand directly affects the casting effect of the product, both the molding sand used for the first time and the recycled sand need to be pre-treated before use to remove fine dust and large impurities.

[0003] Conventional technology requires two devices to remove and filter the molding sand. This time-consuming process of transporting the sand between the two devices compromises the efficiency of sand pretreatment. Furthermore, conventional dust removal and filtration devices have limited agitation, making it easy for fine dust or large impurities to remain within the sand after pretreatment, impacting its subsequent use. Utility Model Content

[0004] In view of this, the present invention aims to provide a foundry sand pretreatment device to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A foundry sand pretreatment device comprises: a treatment box, a dust collecting cover and a distribution assembly; the dust collecting cover is detachably arranged on the top of the treatment box, a dust collecting cavity is provided inside the dust collecting cover, a plurality of dust collecting cutouts are provided on the bottom surface of the dust collecting cover, and an air guide pipe is provided on the top surface of the dust collecting cover; a material guide pipe and a filter assembly are provided inside the treatment box, the bottom end of the material guide pipe is connected to the bottom inner wall of the treatment box, and a distribution channel is formed between the top end of the material guide pipe and the bottom surface of the dust collecting cover, the filter assembly is arranged between the outer wall of the material guide pipe and the inner wall of the treatment box, a treatment cavity is formed above the filter assembly, and a discharge cavity is formed below the filter assembly; a material feed port and a material discharge port are also provided on the side wall of the treatment box, and the material feed port is connected to the bottom of the material guide pipe. The ends are connected, and the discharge port is connected to the discharge cavity; the distribution assembly includes: a bearing shaft, a distribution ring and a plurality of distribution plates, the bearing shaft is rotatably arranged inside the guide tube, and an auger blade is provided on the side wall of the bearing shaft, and the outer diameter of the auger blade is equal to the inner diameter of the guide tube; a connecting disk is also provided at the top of the bearing shaft, the connecting disk is placed inside the distribution channel, and the outer diameter of the connecting disk is larger than the outer diameter of the guide tube; the distribution ring is rotatably sleeved on the outside of the guide tube, the distribution ring is located between the top of the guide tube and the filter assembly, and the outer diameter of the distribution ring is smaller than the inner diameter of the processing box; the plurality of distribution plates are evenly distributed in a ring shape on the circumference of the bearing shaft, and the top of the distribution plate is connected to the connecting disk, and the bottom end of the distribution plate is connected to the distribution ring.

[0007] Furthermore, a material guide plate is provided inside the processing box, and the material guide plate is tiltedly arranged inside the discharge cavity, with one end of the material guide plate close to the discharge port lower than the discharge port, and the other end of the material guide plate away from the discharge port higher than the discharge port.

[0008] Furthermore, the filter assembly is a conical filter plate with the large end facing upward.

[0009] Furthermore, a detachable and washable filter core is provided inside the dust collecting cavity.

[0010] Furthermore, the dust collecting cover includes a bottom cover and a top cover, the top cover is detachably arranged on the top of the bottom cover, and the dust collecting cavity is formed between the top cover and the bottom cover.

[0011] Furthermore, a driving motor is provided at the bottom of the processing box, and an output shaft of the driving motor is connected to the bottom end of the bearing shaft.

[0012] Furthermore, a material guiding conical surface is provided at the top end of the material guiding tube.

[0013] Compared with the prior art, the foundry sand pretreatment device described in the present invention has the following advantages:

[0014] (1) The present invention discloses a casting sand pretreatment device, in which a distribution assembly is provided inside the treatment box. When in use, the rotation of the bearing shaft enables the auger blade to transport the molding sand at the bottom end of the guide tube upward, so that the molding sand falls onto the distribution ring along the distribution channel. Since the distribution ring is connected to the connecting plate through the distribution plate, and the outer diameter of the distribution ring is smaller than the inner diameter of the treatment box, after the molding sand falls onto the distribution ring, the rotation of the distribution ring enables the molding sand to be scattered in the treatment cavity, so that fine dust is separated from the molding sand, making it convenient for the dust collecting cover to collect the dust and complete the dust removal work of the molding sand. Subsequently, the molding sand will fall onto the filter assembly, and the large particles of impurities in the molding sand can be intercepted by the filter assembly, so as to complete the filtering work of the molding sand and ensure that the molding sand leaving the device along the discharge port meets the use requirements. Compared with the prior art, the present device can complete the dust removal and filtration of the molding sand at one time, thereby greatly improving the working efficiency of the molding sand pretreatment.

[0015] (2) The present invention discloses a foundry sand pretreatment device, wherein the filter assembly is a conical filter plate with the larger end facing upward. Therefore, when the molding sand contacts the conical filter plate, the molding sand does not accumulate on the filter assembly, thereby improving the molding sand filtration efficiency of the device. In addition, the device is provided with an inclined guide plate within the discharge cavity, thereby improving the discharge efficiency of the device and preventing the formation of molding sand accumulation within the discharge cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic structural diagram of a foundry sand pretreatment device according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of a foundry sand pretreatment device according to an embodiment of the present utility model;

[0019] Figure 3 This is an exploded view of the foundry sand pretreatment device according to an embodiment of the present utility model;

[0020] Figure 4 This is a structural schematic diagram of the cloth assembly described in an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1-processing box; 11-feed port; 12-discharge port; 21-bottom cover; 211-dust collection cutout; 22-top cover; 221-air guide pipe; 23-filter element; 3-feed pipe; 31-feed cone; 4-conical filter plate; 5-bearing shaft; 51-auger blade; 61-connecting plate; 62-feeding ring; 63-feeding plate; 7-feeding plate; 8-drive motor. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] A foundry sand pretreatment device, the structure of which can be Figures 1-4 In this embodiment, a foundry sand pretreatment device includes: a treatment box 1, a dust collecting cover, and a distribution assembly. The treatment box 1 is used to provide an operating space for dust removal and filtration of the molding sand. The dust collecting cover is used to collect fine dust mixed in the molding sand. The distribution assembly is used to transport the molding sand in the device and to spread the molding sand inside the treatment box 1 to facilitate dust removal and filtration of the molding sand.

[0028] Specifically, in this embodiment, a dust collecting cover is detachably mounted on the top of the processing box 1. A dust collecting cavity is provided inside the dust collecting cover. A plurality of dust collecting cutouts 211 are provided on the bottom surface of the dust collecting cover, and an air duct 221 is provided on the top surface of the dust collecting cover. During use, a worker can connect the air duct 221 to the air inlet of a dust collecting blower (not shown in the figure) to create a negative pressure environment inside the dust collecting cavity after the dust collecting blower is started, thereby facilitating the dust collecting cutouts 211 to capture and collect fine dust particles floating inside the processing box 1.

[0029] Optionally, the dust collecting cover in this embodiment may include a bottom cover 21 and a top cover 22. The top cover 22 is detachably mounted on top of the bottom cover 21 via bolts, forming a dust collecting cavity between the top cover 22 and the bottom cover 21. A removable and washable filter element 23 may also be provided within the dust collecting cavity. After the device has been running for a period of time, the filter element 23 can be removed and replaced to ensure that the dust collecting cover has good dust collection performance.

[0030] like Figure 2 As shown, a material guide tube 3 and a filter assembly are provided inside the processing box 1, wherein the bottom end of the material guide tube 3 is connected to the bottom inner wall of the processing box 1, and a material distribution channel is formed between the top end of the material guide tube 3 and the bottom surface of the dust collecting cover. The filter assembly is arranged between the outer wall of the material guide tube 3 and the inner wall of the processing box 1. By providing the filter assembly, a processing cavity and a discharge cavity can be formed inside the processing box 1, and the processing cavity is located above the filter assembly, and the discharge cavity is located below the filter assembly. A feed port 11 and a discharge port 12 are also provided on the side wall of the processing box 1, wherein the feed port 11 is used to introduce the molding sand to be processed into the interior of the device, and the feed port 11 is connected to the bottom end of the material guide tube 3, and the discharge port 12 is used to discharge the processed molding sand out of the device, and the discharge port 12 is connected to the discharge cavity.

[0031] like Figure 4 As shown, the material distribution assembly in this embodiment includes: a supporting shaft 5, a distribution ring 62, and multiple distribution plates 63. The supporting shaft 5 is rotatably mounted within the material guide tube 3. Auger blades 51 are provided on the sidewall of the supporting shaft 5. A connecting disc 61 is also provided at the top of the supporting shaft 5, and is positioned within the material distribution channel. The distribution ring 62 is rotatably mounted on the outside of the material guide tube 3 and is located between the top of the material guide tube 3 and the filter assembly. Multiple distribution plates 63 are evenly distributed in an annular shape around the supporting shaft 5. The top ends of the distribution plates 63 are connected to the connecting disc 61, and the bottom ends of the distribution plates 63 are connected to the distribution ring 62.

[0032] During use, the staff can guide the molding sand to be processed into the guide tube 3 along the feed port 11, and then drive the supporting shaft 5 to rotate, so that the molding sand is transported from the bottom to the top inside the guide tube 3 with the help of the auger blade 51. When the molding sand is transported to the top of the guide tube 3, the molding sand will leave the guide tube 3 along the distribution channel and fall above the distribution ring 62. Since the distribution ring 62 is connected to the connecting disk 61 through the distribution plate 63, the distribution ring 62 will rotate with the supporting shaft 5, so that the molding sand will be separated from the distribution ring 62 by the centrifugal force generated by the rotation of the distribution ring 62, so that the molding sand moves towards the filter assembly in a throwing posture. During the throwing process of the molding sand, due to the small particle size and light weight of the fine dust, the fine dust will be separated from the normal molding sand during the throwing process, making it easier for the dust collecting cover to adsorb and capture it, completing the dust removal work of the molding sand. Next, the molding sand will fall onto the top of the filter assembly under the action of gravity. The molding sand can be filtered and screened by the filter assembly so that large particles of solid impurities are intercepted inside the processing cavity. The molding sand with a particle size that meets the use requirements enters the discharge cavity and finally leaves the device along the discharge port 12, thereby completing the filtering of the molding sand.

[0033] It should be noted that in this embodiment, the outer diameter of the auger blade 51 should be equal to the inner diameter of the guide tube 3 to ensure that the molding sand at the bottom of the guide tube 3 can be smoothly transferred to the top of the guide tube 3. The outer diameter of the connecting plate 61 should be larger than the outer diameter of the guide tube 3, and the outer diameter of the distribution ring 62 should be smaller than the inner diameter of the processing box 1 to ensure that the molding sand leaving the guide tube 3 can smoothly enter the distribution channel and smoothly separate from the distribution ring 62 during its rotation, so that the molding sand can easily fall into the filter assembly through the gap between the distribution ring 62 and the inner wall of the processing box 1.

[0034] Optionally, in order to prevent the molding sand from accumulating at the top of the guide tube 3, a guide cone 31 can be provided at the top of the guide tube 3, so that the molding sand that has left the guide tube 3 can be guided by the guide cone 31, making it easier for the molding sand to fall onto the distribution ring 62.

[0035] As an optional implementation of this embodiment, to facilitate driving the support shaft 5 to rotate, a drive motor 8 may be provided at the bottom of the processing box 1. During assembly, the operator may connect the output shaft of the drive motor 8 to the bottom end of the support shaft 5, so that the drive motor 8 can drive the support shaft 5 to rotate and the rotation speed of the support shaft 5 can be reasonably controlled.

[0036] In order to improve the filtration efficiency of the device for molding sand, Figure 2 and Figure 3As shown, the filter assembly can be configured as a conical filter plate 4 with the larger end facing upward. When the molding sand contacts the conical filter plate 4, the conical filter plate 4 has an inclination, so the molding sand will not accumulate on the conical filter plate 4. This can improve the filtering efficiency of the molding sand and prevent the conical filter plate 4 from being blocked during operation, thereby ensuring a good filtering effect of the molding sand.

[0037] Furthermore, to improve the discharge efficiency of the device, a guide plate 7 may be provided within the processing box 1. Specifically, the guide plate 7 is tilted within the discharge cavity, with the end of the guide plate 7 near the discharge port 12 lower than the discharge port 12, and the end of the guide plate 7 away from the discharge port 12 higher than the discharge port 12. After the molding sand has been filtered, the guide plate 7 receives the molding sand that has passed through the filter assembly and, thanks to the tilt of the guide plate 7, drives the molding sand toward the discharge port 12, facilitating rapid discharge and preventing the accumulation of processed molding sand within the device.

[0038] The following describes the effects of the above scheme:

[0039] This embodiment provides a foundry sand pretreatment device, which can realize the transportation of molding sand within the device through the distribution component, and can sprinkle the molding sand so that the dust collecting cover can collect fine dust in the molding sand, and the large particles of impurities in the molding sand can be screened with the help of the filtering component, thereby completing the dust removal and filtering treatment of the molding sand at one time, thereby improving the pretreatment efficiency of the molding sand.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A foundry sand pretreatment device, characterized in that: include: A processing box (1), a dust collecting cover and a cloth assembly; the dust collecting cover is detachably arranged on the top of the processing box (1); a dust collecting cavity is provided inside the dust collecting cover; a plurality of dust collecting cutouts (211) are provided on the bottom surface of the dust collecting cover; and an air guide pipe (221) is provided on the top surface of the dust collecting cover; a material guide pipe (3) and a filter assembly are provided inside the processing box (1); the bottom end of the material guide pipe (3) is connected to the bottom inner wall of the processing box (1), and a filter assembly is provided at the bottom of the material guide pipe (3). A material distribution channel is formed between the top and the bottom surface of the dust collecting cover, the filter assembly is arranged between the outer wall of the guide pipe (3) and the inner wall of the processing box (1), a processing cavity is formed above the filter assembly, and a material discharge cavity is formed below the filter assembly; a feed port (11) and a material discharge port (12) are also provided on the side wall of the processing box (1), the feed port (11) is connected to the bottom end of the guide pipe (3), and the material discharge port (12) is connected to the material discharge cavity; the material distribution assembly includes The invention comprises a bearing shaft (5), a material distribution ring (62) and a plurality of material distribution plates (63), wherein the bearing shaft (5) is rotatably arranged inside the material guide tube (3), an auger blade (51) is provided on the side wall of the bearing shaft (5), and the outer diameter of the auger blade (51) is equal to the inner diameter of the material guide tube (3); a connecting disk (61) is further provided at the top end of the bearing shaft (5), and the connecting disk (61) is placed inside the material distribution channel, and the outer diameter of the connecting disk (61) is larger than that of the material guide tube (3). The outer diameter of the material pipe (3); the distribution ring (62) is rotatably sleeved on the outside of the material guide pipe (3), the distribution ring (62) is located between the top end of the material guide pipe (3) and the filter assembly, and the outer diameter of the distribution ring (62) is smaller than the inner diameter of the processing box (1); a plurality of the distribution plates (63) are evenly distributed in a ring shape on the circumference of the bearing shaft (5), and the top end of the distribution plate (63) is connected to the connecting plate (61), and the bottom end of the distribution plate (63) is connected to the distribution ring (62).

2. A foundry sand pretreatment device according to claim 1, characterized in that: A material guide plate (7) is further provided inside the processing box (1), and the material guide plate (7) is tiltedly arranged inside the discharge cavity, with one end of the material guide plate (7) close to the discharge port (12) being lower than the discharge port (12), and the other end of the material guide plate (7) away from the discharge port (12) being higher than the discharge port (12).

3. A foundry sand pretreatment device according to claim 1, characterized in that: The filter assembly is a conical filter plate (4) with the large end facing upward.

4. A foundry sand pretreatment device according to claim 1, characterized in that: A detachable and washable filter core (23) is provided inside the dust collecting cavity.

5. The foundry sand pretreatment device according to claim 1, characterized in that: The dust collecting cover comprises a bottom cover (21) and a top cover (22); the top cover (22) is detachably arranged on the top of the bottom cover (21), and the dust collecting cavity is formed between the top cover (22) and the bottom cover (21).

6. The foundry sand pretreatment device according to claim 1, characterized in that: A driving motor (8) is provided at the bottom of the processing box (1), and an output shaft of the driving motor (8) is connected to the bottom end of the bearing shaft (5).

7. The foundry sand pretreatment device according to claim 1, characterized in that: The top end of the material guiding pipe (3) is provided with a material guiding conical surface (31).

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