A vacuumized sand box body structure

Abstract

This utility model discloses a vacuum sand box structure, relating to the field of sand box technology. The box includes a box body and a T-shaped groove integrally formed at the bottom of the box body. Distribution pipes are symmetrically arranged on both sides of the inner wall of the box body, and the distribution pipes are regularly coiled around the inner wall surface of the box body. Several uniformly arranged through holes are distributed on the surface of the distribution pipes, and these through holes connect to the interior of the distribution pipes. A connecting pipe is installed inside the T-shaped groove, and both ends of the connecting pipe are connected to one end of each of the two distribution pipes. An air extraction pipe is installed inside the T-shaped groove. The uniformly coiled distribution pipes on both sides of the inner wall of the box body have through holes on their surfaces. One end of the air extraction pipe is connected to a vacuum pump. Through the connecting pipe and the distribution pipes, air inside the box body is uniformly extracted to ensure uniform and efficient air extraction.

Description

Technical Field

[0001] This utility model relates to the field of sand box technology, specifically to a vacuum sand box structure. Background Technology

[0002] The vacuum sandbox is a sandbox used in the vacuum sealing molding method. Its core function is to create and maintain a vacuum inside the sandbox, thereby using atmospheric pressure to compact the loose dry sand around the model and form a solid cavity.

[0003] For example, the announcement number CN111957907A is a sand box for lost foam casting. The device includes a box body, and the bottom of the outer box body is connected to a support plate through a spring assembly. The support plate is slidably connected to the side wall of the outer box body. The upper surface of the support plate is fixedly connected to a support seat. The inner sand box is squeezed and fixed by the cooperation of sealing cavity one and sealing cavity two, while vacuuming on five sides. The vacuum effect is good and the vacuum energy consumption is low.

[0004] The uneven distribution of the air extraction ports inside the sand box can lead to an inability to perform uniform and effective vacuuming inside the sand box, resulting in low efficiency during vacuuming. Summary of the Invention

[0005] The purpose of this utility model is to provide a vacuum sand box structure to solve the problem mentioned in the background art that the uneven distribution of the air extraction ports inside the sand box leads to an inability to perform uniform and effective vacuuming of the sand box, resulting in low efficiency during vacuuming.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum sand box structure, comprising a box body;

[0007] Also includes:

[0008] The T-shaped groove is integrally formed and set at the bottom of the box. The inner wall of the box is symmetrically arranged with distribution pipes on both sides, and the distribution pipes are regularly coiled around the inner wall surface of the box. The surface of the distribution pipes is distributed with several evenly arranged through holes, and the through holes connect to the inside of the distribution pipes. The T-shaped groove is equipped with a connecting pipe, and the two ends of the connecting pipe are respectively connected to one end of the two distribution pipes. The T-shaped groove is equipped with an air extraction pipe, and one end of the air extraction pipe is connected to the middle of the connecting pipe.

[0009] Preferably, the inner cavity of the box is equipped with filter plates, and four filter plates are arranged and distributed around the inner cavity of the box. The inner cavity of the box is equipped with an L-shaped frame, and one end surface of the splicing point of two filter plates is attached to the inner side of the L-shaped frame. The L-shaped frame is fixed to one side of the inner wall of the box by a fixing rod.

[0010] Preferably, the filter plates are integrally formed with trapezoidal surfaces at both ends, and adjacent filter plates are spliced ​​together at a 90-degree right angle through the trapezoidal surfaces.

[0011] Preferably, the inner wall of the L-shaped frame is provided with protrusions, and the surface of the filter plate near the L-shaped frame is provided with grooves, and the protrusions and grooves are slidably engaged.

[0012] Preferably, the upper end of the box is provided with a cover plate, and the cover plate is hinged to open and close at the upper end of the box, and a rubber pad is attached to the upper edge of the box.

[0013] Preferably, a metal wire mesh is provided on the surface of the filter plate near the inner wall of the box, and a filter screen is provided on the surface of the filter plate away from the inner wall of the box.

[0014] Preferably, the cover plate is symmetrically provided with first composite plates on both sides, and the upper end of the box is symmetrically provided with second composite plates on both sides, with the second composite plates located below the first composite plates at corresponding positions. The surface of the first composite plate is provided with a round hole, and the surface of the second composite plate is provided with a threaded hole. The first composite plate and the second composite plate are connected and fixed by locking bolts, and the locking bolts pass through the round holes and are threadedly connected to the threaded holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) By setting evenly wound distribution pipes on both sides of the inner wall of the box, and the surface of the distribution pipes is provided with through holes, one end of the exhaust pipe is connected to the vacuum pump. Through the connecting pipe and the distribution pipe, the air inside the box is evenly extracted to ensure that the exhaust is uniform and efficient. T-slots are set to store and lock the connecting pipe and the exhaust pipe to reduce the possibility of damage to the connecting pipe and the exhaust pipe caused by the external environment.

[0017] (2) By setting filter plates inside the box, four filter plates are spliced ​​together to form a closed structure, which isolates the molding sand from the distribution pipe, so that the molding sand will not be drawn into the pipe during vacuum extraction. In addition, there is a certain distance between the filter plates and the box, which facilitates air circulation, improves the efficiency of vacuum extraction, and reduces the inconvenience of vacuum extraction due to insufficient space. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;

[0020] Figure 3 This is a schematic diagram of the bottom of the box body of this utility model;

[0021] Figure 4 This is a schematic diagram of the filter plate structure of this utility model;

[0022] Figure 5 This is a partial top view of the filter plate assembly of this utility model;

[0023] In the diagram: 1. Box body; 2. Cover plate; 3. First composite plate; 4. Second composite plate; 5. Locking bolt; 6. Round hole; 7. Threaded hole; 8. T-slot; 9. Exhaust pipe; 10. Connecting pipe; 11. Distribution pipe; 12. Through hole; 13. Filter plate; 14. L-shaped frame; 15. Trapezoidal surface; 16. Protrusion; 17. Groove; 18. Filter screen; 19. Metal wire mesh; 20. Fixing rod; 21. Rubber pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] This utility model provides a vacuum sand box structure, which includes a box body 1. The main problem this utility model solves is that the uneven distribution of air extraction ports inside the sand box leads to inconsistent and ineffective vacuuming, resulting in low efficiency during vacuuming.

[0026] For the device provided by this utility model, please refer to Figures 1-5 The following is a detailed introduction.

[0027] The T-shaped groove 8 is integrally formed at the bottom of the box body 1. The inner walls of the box body 1 are symmetrically arranged with distribution pipes 11, and the distribution pipes 11 are regularly coiled around the inner wall surface of the box body 1. The surface of the distribution pipes 11 is distributed with several evenly arranged through holes 12, and the through holes 12 connect to the interior of the distribution pipes 11. The interior of the T-shaped groove 8 is equipped with a connecting pipe 10, and the two ends of the connecting pipe 10 are respectively connected to one end of the two distribution pipes 11. The interior of the T-shaped groove 8 is equipped with a suction pipe 9, and one end of the suction pipe 9 is connected to the middle of the connecting pipe 10.

[0028] Please see Figures 4-5To further explain, filter plates 13 are installed in the inner cavity of the housing 1, and four filter plates 13 are arranged around the inner cavity of the housing 1. A metal wire mesh 19 is provided on the surface of the filter plate 13 near the inner wall of the housing 1, and a filter screen 18 is provided on the surface of the filter plate 13 near the inner wall of the housing 1. The metal wire mesh 19 improves the firmness. The filter plates 13 can intercept molding sand. An L-shaped frame 14 is provided in the inner cavity of the housing 1, and one end surface of the splice of two filter plates 13 is attached to the inner side of the L-shaped frame 14. The L-shaped frame 14 is fixed by a fixing rod 20. Fixed on one side of the inner wall of the housing 1, the filter plate 13 has trapezoidal surfaces 15 integrally formed at both ends, and two adjacent filter plates 13 are spliced ​​together at a 90-degree right angle through the trapezoidal surfaces 15. The trapezoidal surfaces 15 facilitate the splicing between two adjacent filter plates 13. The inner wall of the L-shaped frame 14 is provided with protrusions 16, and the surface of the filter plate 13 near the L-shaped frame 14 is provided with grooves 17. The protrusions 16 and grooves 17 are slidably engaged and connected, so that the filter plate 17 is firmly attached to the inner wall of the L-shaped frame 14.

[0029] Please see Figure 1 To further explain, a cover plate 2 is provided at the upper end of the box body 1, and the cover plate 2 is hinged to open and close at the upper end of the box body 1. A rubber pad 21 is attached to the upper edge of the box body 1. The rubber pad 21 improves the sealing performance when the cover plate 2 is closed. A first composite plate 3 is symmetrically arranged on both sides of the cover plate 2, and a second composite plate 4 is symmetrically arranged on both sides of the upper end of the box body 1. The second composite plate 4 is located below the first composite plate 3 at the corresponding position. A round hole 6 is provided on the surface of the first composite plate 3, and a threaded hole 7 is provided on the surface of the second composite plate 4. The first composite plate 3 and the second composite plate 4 are connected and fixed by a locking bolt 5. The locking bolt 5 passes through the round hole 6 and is threadedly connected to the threaded hole 7. The locking bolt 5 is used to ensure the tightness of the cover plate 2 when it is closed on the surface of the box body 1.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vacuum sand box structure (1), comprising a box body (1); characterized in that: Also includes: The T-shaped groove (8) is integrally formed and set at the bottom of the box (1). The inner walls of the box (1) are symmetrically provided with distribution pipes (11), and the distribution pipes (11) are regularly coiled around the inner wall surface of the box (1). The surface of the distribution pipes (11) is distributed with several uniformly arranged through holes (12), and the through holes (12) are connected to the inside of the distribution pipes (11). The inside of the T-shaped groove (8) is installed with a connecting pipe (10), and the two ends of the connecting pipe (10) are respectively connected to one end of the two distribution pipes (11). The inside of the T-shaped groove (8) is installed with an exhaust pipe (9), and one end of the exhaust pipe (9) is connected to the middle of the connecting pipe (10).

2. The structure of a vacuum sand box body (1) according to claim 1, characterized in that: The inner cavity of the box (1) is equipped with filter plates (13), and four filter plates (13) are provided and distributed around the inner cavity of the box (1). The inner cavity of the box (1) is provided with an L-shaped frame (14), and one end surface of the splice of two filter plates (13) is attached to the inner side of the L-shaped frame (14). The L-shaped frame (14) is fixed to one side of the inner wall of the box (1) by a fixing rod (20).

3. The structure of a vacuum sand box body (1) according to claim 2, characterized in that: The filter plate (13) has trapezoidal surfaces (15) integrally formed at both ends, and two adjacent filter plates (13) are spliced ​​together at a 90-degree right angle through the trapezoidal surfaces (15).

4. The structure of a vacuum sand box body (1) according to claim 2, characterized in that: The inner wall of the L-shaped frame (14) is provided with a protrusion (16), and the filter plate (13) is provided with a groove (17) on the side surface near the L-shaped frame (14), and the protrusion (16) and the groove (17) are slidably engaged.

5. The structure of a vacuum sand box body (1) according to claim 1, characterized in that: The upper end of the box (1) is provided with a cover plate (2), and the cover plate (2) is opened and closed at the upper end of the box (1) by a hinge. A rubber pad (21) is attached to the upper edge of the box (1).

6. The structure of a vacuum sand box body (1) according to claim 2, characterized in that: The filter plate (13) has a metal wire mesh (19) on the side surface near the inner wall of the box (1), and a filter screen (18) on the side surface of the filter plate (13) away from the inner wall of the box (1).

7. The structure of a vacuum sand box body (1) according to claim 5, characterized in that: The cover plate (2) is symmetrically provided with first composite plates (3) on both sides, and the upper end of the box (1) is symmetrically provided with second composite plates (4) on both sides. The second composite plate (4) is located below the first composite plate (3) at the corresponding position. The surface of the first composite plate (3) is provided with a round hole (6), and the surface of the second composite plate (4) is provided with a threaded hole (7). The first composite plate (3) and the second composite plate (4) are connected and fixed by locking bolts (5), and the locking bolts (5) pass through the round hole (6) and are threadedly connected to the threaded hole (7).

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