Lost foam sand box air chamber cleaning device

Abstract

The utility model discloses an evanescent mode sand box air chamber cleaning device which is characterized in that a hollow pipe which is flush with the side wall of a sand box is arranged in the air chamber, a plurality of air holes which are sequentially formed at intervals in the axial direction of the hollow pipe are formed in the pipe wall of the hollow pipe, an opening is formed in the vertex angle of the air chamber arranged around the sand box, and a plugging piece is detachably installed in the opening. The plugging piece comprises a plugging plate, a top plate, a bottom plate and a sealing rubber block, the top plate and the bottom plate which abut against the upper surface and the lower surface of the air chamber are arranged at the upper end and the lower end of the plate face, facing the sand box, of the plugging plate correspondingly, and the sealing rubber block which is located between the top plate and the bottom plate and is in interference fit with the opening is further arranged on the side, facing the sand box, of the plugging plate; according to the air chamber cleaning device, the situation that sundries can be cleaned only by cutting the air chamber traditionally is avoided, the cleaning and nursing efficiency of the air chamber is greatly improved, the working difficulty and workload of workers are reduced, the flowing speed of air in the air chamber can be effectively increased, and therefore the situation that dust adheres to the inner wall of the air chamber is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lost foam vacuum systems, in particular to a lost foam sand box air chamber cleaning device. Background Art

[0002] The lost foam negative pressure system includes a vacuum pump, an air storage tank, a main pipeline, a negative pressure distributor and a sand box. The lost foam pattern cluster is placed in the sand box, and sand is filled around the pattern cluster. There is a layer of stainless steel screen between the air chamber of the sand box and the molding sand. When the negative pressure is pumped, the dust of the molding sand and the tar-like residue produced by burning the white mold will pass through the stainless steel screen and adhere to the inner surface of the sand box air chamber. Over time, the residue will gradually block the air chamber of the sand box, resulting in increased energy consumption for pumping negative pressure, reduced negative pressure in the sand box, inability to fully burn the white mold, backspray of molten steel during pouring, insufficient pouring of castings and other problems.

[0003] However, most of the existing air chambers are welded and fixed on the side walls of the sand box. When cleaning the air chamber of the sand box, it is necessary to use a gas cutting gun to completely cut the air chamber from the sand box and separate it from the right-angle connection of the air chamber for cleaning. After the air chamber is cleaned, it needs to be re-welded on the sand box and polished flat. This cleaning method is not only troublesome to operate and time-consuming, but also in the process of gas cutting, sand particles splash, which will cause certain harm to the operator. Therefore, a lost foam sand box air chamber cleaning device is needed. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model discloses a lost foam sand box air chamber cleaning device. The utility model not only avoids the traditional situation that the air chamber needs to be cut to clean the debris, greatly improves the cleaning and care efficiency of the air chamber, reduces the work difficulty and workload of the staff, but also can effectively increase the flow rate of the air in the air chamber, thereby effectively reducing the dust adhering to the inner wall of the air chamber.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lost foam sand box air chamber cleaning device comprises a sand box and an air chamber arranged around the sand box, wherein a hollow tube flush with the side wall of the sand box is arranged in the air chamber, a plurality of air holes arranged in an orderly manner along the axial direction of the hollow tube are arranged on the wall of the hollow tube, an opening is arranged at the top corner of the air chamber arranged around the sand box, a sealing member is detachably installed in the opening, the sealing member comprises a sealing plate, a top plate, a bottom plate and a sealing rubber block, the size of the sealing plate is larger than the size of the opening, the upper end and the lower end of the plate surface of the sealing plate facing the sand box are respectively provided with a top plate and a bottom plate which contact with the upper and lower surfaces of the air chamber, a sealing rubber block which is located between the top plate and the bottom plate and has an interference fit with the opening is also provided on the side of the sealing plate facing the sand box, and the end of the hollow tube contacts and seals with the sealing rubber block.

[0007] Furthermore, mounting screw holes are provided on the end surfaces at both ends of the opening, and limiting screw holes corresponding to the mounting screw holes are provided on the top plate and the bottom plate. The corresponding mounting screw holes are connected to the inner threads of the limiting screw holes with fixing screws.

[0008] Furthermore, sealing rubber pads are provided on the opposite surfaces of the top plate and the bottom plate, which are in interference contact with the upper and lower end surfaces of the opening.

[0009] Furthermore, the ends of the top plate and the bottom plate facing the sand box are provided with notches matched with the surface of the sand box.

[0010] Furthermore, a handle is provided on the plate surface of the blocking plate facing away from the sand box.

[0011] Furthermore, the hollow tube is fixedly connected to the sand box through a plurality of connecting rods.

[0012] Furthermore, the plurality of pores on the hollow tube are all inclined in the same direction.

[0013] Furthermore, the number of openings on the air chamber is one, the hollow tube is arranged along the air chamber and around the sand box, and both ends of the hollow tube are located in the opening.

[0014] Furthermore, each top corner of the air chamber is provided with an opening, the number of the hollow tubes matches the number of the side walls of the sand box, each hollow tube is parallel to the adjacent side walls of the sand box, and both ends of each hollow tube are located in adjacent openings.

[0015] Compared with the prior art, the utility model has the following beneficial effects: by providing an opening on the air chamber, it is convenient to subsequently clean up the debris in the air chamber by high-pressure gas;

[0016] The sealing rubber block is set to seal the end of the hollow tube, thereby greatly increasing the air flow speed in the air chamber, thereby effectively reducing the dust adhesion to the inner wall of the air chamber;

[0017] By setting the inclined air holes, the airflow always flows in the same direction, thus providing strong support for the subsequent gas flow and the cleaning of debris;

[0018] By providing multiple openings and multiple hollow tubes, the subsequent cleaning efficiency of the air chamber can be greatly improved;

[0019] The utility model not only avoids the traditional situation that the air chamber needs to be cut to clean up the debris, but also greatly improves the cleaning efficiency of the air chamber, reduces the working difficulty and workload of the staff, but also effectively increases the flow rate of air in the air chamber, thereby effectively reducing the dust adhering to the inner wall of the air chamber; the utility model has a simple structure and is easy to install and use, which provides great convenience for the use and care of the sand box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the blocking block structure of the utility model;

[0022] Figure 3 This is a front view of the blocking block of the utility model;

[0023] Figure 4 This is a schematic diagram of the hollow tube structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the installation state of the hollow tube of the utility model;

[0025] Figure 6 This is a schematic diagram of another installation state of the hollow tube of the utility model.

[0026] In the figure: 1. sand box; 2. air chamber; 3. sealing block; 4. mounting screw hole; 5. opening; 6. hollow tube; 7. fixing screw; 8. limiting screw hole; 9. top plate; 10. notch; 11. sealing plate; 12. handle; 13. sealing rubber block; 14. bottom plate; 15. sealing rubber pad; 16. air hole; 17. connecting rod. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0028] Please refer to the instruction manual Figure 1-6 , the utility model provides a technical solution:

[0029] Embodiment 1, a lost foam sand box air chamber cleaning device, comprising a sand box 1, and an air chamber 2 arranged around the sand box 1, a hollow tube 6 flush with the side wall of the sand box 1 is arranged in the air chamber 2, the hollow tube 6 is fixedly connected to the sand box 1 through a plurality of connecting rods 17, a plurality of air holes 16 are arranged in an orderly manner along the axial direction of the hollow tube 6 on the wall of the hollow tube 6, in order to ensure that the flow direction of the air flow in the air chamber is always kept straight, the plurality of air holes 16 on the hollow tube 6 are all inclined in the same direction;

[0030] An opening 5 is provided at the top corner of the air chamber 2 arranged around the sand box 1, and a blocking member 3 is detachably installed in the opening 5. Specifically, the blocking member 3 includes a blocking plate 11, a top plate 9, a bottom plate 14 and a sealing rubber block 13. The size of the blocking plate 11 is larger than the size of the opening 5. The upper and lower ends of the plate surface of the blocking plate 11 facing the sand box 1 are respectively provided with a top plate 9 and a bottom plate 14 that are in conflict with the upper and lower surfaces of the air chamber 2. Mounting screw holes 4 are provided on the end surfaces at the upper and lower ends of the opening 5. Limiting screw holes 8 corresponding to the mounting screw holes 4 are provided on the top plate 9 and the bottom plate 14. The corresponding mounting screw holes 4 are threadedly connected to the limiting screw holes 8 with fixing screws 7. In order to ensure that the ends of the top plate 9 and the bottom plate 14 are in close contact with the side wall of the sand box 1, the ends of the top plate 9 and the bottom plate 14 facing the sand box 1 are provided with notches 10 adapted to the surface of the sand box 1, and the plate surface of the blocking plate 11 facing away from the sand box 1 is provided with a handle 12. The side of the blocking plate 11 facing the sand box 1 is also provided with a sealing rubber block 13 located between the top plate 9 and the bottom plate 14 and having an interference fit with the opening 5. The end of the hollow tube 6 is in contact with the sealing rubber block 13 for sealing. In order to further improve the sealing effect of the blocking member 3 on the opening 5, the opposite surfaces of the top plate 9 and the bottom plate 14 are provided with sealing rubber pads 15 in interference contact with the upper and lower end surfaces of the opening;

[0031] When cleaning the air chamber 2, the staff only needs to remove the sealing piece 3 and inject high-pressure gas into the air chamber 2 through the opening 5. The high-pressure gas can be used to flush out the debris in the air chamber 2. In order to achieve efficient cleaning of the dust adhering to the inner wall of the air chamber 2, the outside of the air chamber 2 can be heated and knocked, which can effectively make the dust adhering to the inner wall of the air chamber 2 fall off and be flushed out with the high-pressure gas.

[0032] Embodiment 2: In order to ensure the sealing performance of the air chamber 2, the number of openings 5 ​​on the air chamber 2 is one, and accordingly, the hollow tube 6 is arranged around the sand box 1 along the air chamber 2, and both ends of the hollow tube 6 are located in the opening 5. When cleaning, high-pressure gas is injected into the air chamber 2 through the same opening 5, and the high-pressure gas flows along the air chamber 2 and then discharged from the opening 5.

[0033] Embodiment three, in order to improve the cleaning and care efficiency of the air chamber 2, an opening 5 is provided at each top corner of the air chamber 2, and the number of hollow tubes 6 matches the number of side walls of the sand box 1, and each hollow tube 6 is parallel to the adjacent side walls of the sand box 1, and the two ends of each hollow tube 6 are respectively located in the adjacent openings 5. By setting a plurality of openings 5 ​​and a plurality of hollow tubes 6, the flow distance of the high-pressure gas can be effectively reduced, thereby increasing the impact force of the high-pressure gas, thereby improving the efficiency of cleaning up debris.

[0034] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A lost foam sand box air chamber cleaning device, comprising a sand box (1), and an air chamber (2) arranged around the sand box (1), characterized in that: A hollow tube (6) flush with the side wall of the sand box (1) is provided in the air chamber (2). A plurality of air holes (16) are provided on the wall of the hollow tube (6) and are arranged in an orderly manner along the axial direction of the hollow tube (6). An opening (5) is provided at the top corner of the air chamber (2) arranged around the sand box (1). A sealing member (3) is detachably installed in the opening (5). The sealing member (3) includes a sealing plate (11), a top plate (9), a bottom plate (14) and a sealing rubber block (13). The sealing plate ( The size of the hollow tube (6) is larger than the size of the opening (5). The upper and lower ends of the plate surface of the sealing plate (11) facing the sand box (1) are respectively provided with a top plate (9) and a bottom plate (14) that abut against the upper and lower surfaces of the air chamber (2). The side of the sealing plate (11) facing the sand box (1) is also provided with a sealing rubber block (13) located between the top plate (9) and the bottom plate (14) and having an interference fit with the opening (5). The end of the hollow tube (6) abuts against the sealing rubber block (13) to seal.

2. The air chamber cleaning device of the lost foam sand box according to claim 1, characterized in that: Mounting screw holes (4) are provided on the end surfaces at both the upper and lower ends of the opening (5), and limiting screw holes (8) corresponding to the mounting screw holes (4) are provided on the top plate (9) and the bottom plate (14), and fixing screws (7) are connected to the corresponding mounting screw holes (4) and the limiting screw holes (8) through internal threads.

3. The air chamber cleaning device of the lost foam sand box according to claim 2 is characterized in that: Sealing rubber pads (15) are provided on the opposing surfaces of the top plate (9) and the bottom plate (14) and are in interference contact with the upper and lower end surfaces of the opening.

4. The air chamber cleaning device of the lost foam sand box according to claim 3 is characterized in that: The ends of the top plate (9) and the bottom plate (14) facing the sand box (1) are provided with notches (10) adapted to the surface of the sand box (1).

5. The lost foam sand box air chamber cleaning device according to claim 1, characterized in that: A handle (12) is provided on the plate surface of the sealing plate (11) facing away from the sand box (1).

6. The lost foam sand box air chamber cleaning device according to claim 1, characterized in that: The hollow tube (6) is fixedly connected to the sand box (1) via a plurality of connecting rods (17).

7. The air chamber cleaning device of the lost foam sand box according to claim 6, characterized in that: The plurality of air holes (16) on the hollow tube (6) are all inclined in the same direction.

8. The air chamber cleaning device of the lost foam sand box according to claim 1, characterized in that: The number of openings (5) on the air chamber (2) is one, and the hollow tube (6) is arranged along the air chamber (2) and around the sand box (1), with both ends of the hollow tube (6) being located in the opening (5).

9. The air chamber cleaning device of the lost foam sand box according to claim 1, characterized in that: Each top corner of the air chamber (2) is provided with an opening (5), the number of the hollow tubes (6) matches the number of the side walls of the sand box (1), each hollow tube (6) is parallel to the adjacent side wall of the sand box (1), and both ends of each hollow tube (6) are respectively located in adjacent openings (5).

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