Filtering and sand adding device for 3D printing device

Abstract

The utility model relates to the technical field of sand adding devices, and discloses a filtering sand adding device for a 3D printing device, which comprises a sand screening box, a box cover capable of being opened and closed is arranged at the upper part of the sand screening box, a feeding pipe is arranged on the box cover, a conveying pipe connected with a feeding pump is arranged at the lower part of the sand screening box, and a filter screen for screening sand is arranged in the sand screening box. A driving motor is fixedly installed on the upper portion of the box cover, a rotating shaft extending into the sand screening box is fixedly installed at the output end of the driving motor, a plurality of stirring plates are fixedly installed on the side face of the lower end of the rotating shaft, one side of each stirring plate abuts against the upper surface of the filter screen, and a discharging box used for discharging coarse sand is arranged on the lower portion of the sand screening box. According to the sand adding device, sand on the filter screen is pushed by the stirring plate, the filtering and screening efficiency of the sand is improved, meanwhile, the side face of the stirring plate abuts against the upper surface of the filter screen, therefore, large-particle sand is prevented from blocking screen holes in the filter screen, the blocking condition is reduced, the filtering efficiency of the sand is improved, and the filtering efficiency of the whole sand adding device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand adding device technical field, concretely to a kind of filtering sand adding device for 3D printing device. BACKGROUND

[0002] With the rapid development of science and technology, 3D printer technology gradually enters people's life, and there are many types of 3D printers. Sand type 3D printer is one of them. Before work, sand particles need to be poured into its own container to facilitate the work of 3D printer.

[0003] After searching, like patent publication No. CN218252759U, a sand adding mechanism with filtering effect for sand type 3D printing device is disclosed, which belongs to the field of sand type 3D printing. It includes a sand storage tank. A screw rod is movably connected to the side of the sand storage tank. A reversible motor is fixedly connected to one end of the screw rod, and a sliding block is threadedly connected to the outside of the screw rod. By setting the sand storage tank, feed pipe, inclined plate, screw rod, reversible motor, sliding block, sand screening tank, positioning rod and feeding mechanism, the sand screening tank can be moved horizontally and reciprocally by the reversible motor through the sliding block during the use of the sand adding mechanism. The sand in the sand screening tank is subjected to the reciprocating force, and the large particles of sand are quickly screened out. The small particles of sand fall into the bottom of the sand storage tank, and then the small particles of sand are fed into the sand type 3D printing device by the feeding mechanism, avoiding the problem of different particle sizes of sand affecting the printing quality of the sand type 3D printing device, thereby improving the printing quality of the sand type 3D printing device.

[0004] The above-mentioned patent has obvious beneficial effects, but there are still some shortcomings in practical operation:

[0005] In the above-mentioned comparative document, sand is introduced into the sand screening tank, and sand is screened and filtered by reciprocating the sand screening tank. In reality, the vibration effect of the sand screening tank caused by the reversible motor is poor when the sand screening tank is reciprocated, and the large particles of sand in the sand screening tank may block the sieve holes in the sand screening tank, thereby reducing the filtering and screening efficiency of the sand adding device. Therefore, there is an urgent need to improve the filtering sand adding device for 3D printing device to solve the defects of the prior art. UTILITY MODEL CONTENTS

[0006] In view of the shortcomings of the prior art, the utility model provides a filtering sand adding device for 3D printing device, which improves the filtering efficiency of the overall sand adding device.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A kind of filtering sand adding device for 3D printing device, including sand screening box, the upper portion of the sand screening box is equipped with the box cover that can be opened and closed, the box cover is equipped with feed pipe, the lower portion of the sand screening box is equipped with the feed pipe connected with feeding pump, the inside of the sand screening box is equipped with filter screen for sand screening, the upper portion of the box cover is fixedly installed with driving motor, the output end of the driving motor is fixedly installed with rotating shaft extending to the inside of sand screening box, the side surface of the lower end of the rotating shaft is fixedly installed with several agitator plates, the side of the agitator plate is in abutment with the upper surface of filter screen, the lower portion of the sand screening box is equipped with discharge box for discharging coarse sand.

[0008] Preferably, the discharge box is fixedly installed on the inner side wall of the sand screening box, the discharge box and the sand screening box are both provided with an adapted discharge port, the discharge box is fixedly installed with telescopic device with telescopic effect, the telescopic device is fixedly installed with blocking plate on the upper end of telescopic, the filter screen is provided with unloading groove adapted to the blocking plate.

[0009] Preferably, the filter screen is fixedly installed with several fixed blocks on the side surface, the inner side wall of the sand screening box is provided with several installation grooves adapted to the fixed blocks and penetrating the upper portion of the sand screening box.

[0010] Preferably, the agitator plate is inclined and adapted to the rotation direction of the driving motor.

[0011] Preferably, the bottom cavity of the sand screening box is in the shape of circular truncated cone with upper width and lower narrowness.

[0012] Preferably, the cross section of the blocking plate is in the shape of trapezoid with upper narrowness and lower width and is adapted to the unloading groove.

[0013] Preferably, the bottom of the discharge box is in the shape of inclined plane and is adapted to the position of the discharge port of the sand screening box.

[0014] In view of the deficiencies of the prior art, the utility model provides a kind of filtering sand adding device for 3D printing device, overcome the deficiencies of prior art, the beneficial effects of the utility model are in that:

[0015] 1、in the utility model, the output end of driving motor drives rotating shaft rotation, rotating shaft rotation drives agitator plate rotation, agitator plate pushes sand on filter screen, accelerates the filtering and screening efficiency of sand, while the side surface of agitator plate is in abutment with the upper surface of filter screen, to prevent large particle sand from plugging the screen hole on filter screen, reduce the plugging condition and improve the filtering efficiency of sand, realize the filtering efficiency of the whole sand adding device is improved.

[0016] 2、 The utility model discloses, the telescopic end of telescopic device drives the sealing plate to move down, and the sealing plate is away from the discharge groove, and starts drive motor, and drive motor rotates through the drive rotating shaft, and the rotating shaft drives the agitator board to push the big particle sand on the filter screen to the discharge groove position, and falls to the discharge box from the discharge groove position, and discharges through the discharge port, convenient for discharging the sand of screening filtration unqualified.

[0017] 3、 The utility model discloses, the fixed block of filter screen side surface is aligned with the installation slot, and the new filter screen is placed in the sand screening box, and the filter screen can be conveniently installed or replaced later.

[0018] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of the specification, illustrate embodiments of the present application, and together with the description serve to explain the present application, and do not limit the present application.

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

[0021] Figure 2 It is the structure schematic diagram of the sand screening box partial section of the utility model;

[0022] Figure 3 It is the overall section structure schematic diagram of the utility model;

[0023] Figure 4 It is the structure schematic diagram of the agitator board of the utility model;

[0024] Figure 5 It is the structure schematic diagram of the filter screen of the utility model;

[0025] Figure 6 It is the structure schematic diagram of the discharge box section of the utility model;

[0026] Figure 7 It is Figure 3 The enlarged structure schematic diagram of A in the utility model.

[0027] In the drawing: 1, sand screening box;2, box cover;3, feed pipe;4, feed pipe;5, filter screen;6, drive motor;7, rotating shaft;8, agitator board;9, discharge box;10, discharge port;11, telescopic device;12, sealing plate;13, discharge groove;14, fixed block;15, installation slot. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0029] Please refer to Figures 1-7 A kind of filtering sand device for 3D printing device, including sand screening box 1, sand screening box 1 upper portion is equipped with the box cover 2 that can be opened and closed, box cover 2 is equipped with feed pipe 3, the lower portion of sand screening box 1 is equipped with the feed pipe 4 connected with feeding pump, sand screening box 1 inside is equipped with filter screen 5 for sand screening, box cover 2 upper portion is fixedly installed with driving motor 6, the output end of driving motor 6 is fixedly installed with the rotating shaft 7 extending to the inside of sand screening box 1, the lower end side of rotating shaft 7 is fixedly installed with several agitator plates 8, agitator plate 8 one side is in contact with the upper surface of filter screen 5, sand screening box 1 lower portion is equipped with discharge box 9 for discharging coarse sand.

[0030] Specifically, when using 3D printing device, first need to filter and screen its printing material sand, prevent large particle sand or impurities from mixing in to cause 3D printing device to be blocked and the like, raw material sand is guided into sand screening box 1 through feed pipe 3, sand falls on the upper surface of filter screen 5, a plurality of screen holes of adaptive size are formed on filter screen 5, qualified raw material sand falls in the lower portion cavity of sand screening box 1 through screen hole, and is transported to 3D printing device for printing by cooperating with feed pipe 4 connected with feeding pump (not shown in the figure), at the same time, driving motor 6 is started, the output end of driving motor 6 drives rotating shaft 7 to rotate, rotating shaft 7 drives agitator plate 8 to rotate when rotating, agitator plate 8 pushes sand on filter screen 5, accelerates the filtering and screening efficiency of sand, at the same time, the side surface of agitator plate 8 is in contact with the upper surface of filter screen 5, thereby preventing large particle sand from blocking screen holes on filter screen 5, reducing the blocking condition and improving the filtering efficiency of sand, realizing improving the filtering efficiency of the whole sand adding device.

[0031] As a technical optimization scheme of the present application, discharge box 9 is fixedly installed on the inner side wall of sand screening box 1, discharge box 9 and one side of sand screening box 1 are both provided with adaptive discharge port 10, telescopic device 11 with telescopic effect is fixedly installed in discharge box 9, telescopic device 11 is fixedly installed with sealing plate 12 on the telescopic upper end, unloading groove 13 matched with sealing plate 12 is formed through filter screen 5.

[0032] Specifically, when the quantitative sand filtering is completed, the sand feeding into the sand screening box 1 is stopped, at this time, the telescopic device 11 is started, the telescopic end of the telescopic device 11 drives the blocking plate 12 to move downward, the blocking plate 12 is away from the discharge chute 13, the driving motor 6 is started, the driving motor 6 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the stirring plate 8 to push the large particle sand on the filter screen 5 to the position of the discharge chute 13 and then falls into the discharge box 9 from the position of the discharge chute 13, and then is discharged through the discharge port 10, so that the unqualified sand after screening and filtering is discharged, and the sand screening operation is continued after the blocking plate 12 is reset to the position of the discharge chute 13 through the telescopic device 11.

[0033] As a technical optimization scheme of the utility model, the filter screen 5 is fixedly installed with a plurality of fixed blocks 14 on the side, and a plurality of installation grooves 15 are formed in the inner side wall of the sand screening box 1 and penetrate through the upper part of the sand screening box 1 and are matched with the fixed blocks 14.

[0034] Specifically, the filter screen 5 will be damaged after long-term use, at this time, the box cover 2 is opened and removed through the hoisting equipment, and the driving motor 6, the rotating shaft 7 and the stirring plate 8 are removed at the same time, the filter screen 5 is moved upward through a tool, the fixed blocks 14 on the side of the new filter screen 5 are aligned with the installation grooves 15, and the new filter screen 5 is placed in the sand screening box 1, so that the filter screen 5 is conveniently installed or replaced later.

[0035] As a technical optimization scheme of the utility model, the stirring plate 8 is inclined and matched with the rotating direction of the driving motor 6, the inclined stirring plate 8 reduces the resistance when stirring the sand, prolongs the service life of the stirring plate 8, and has the effect of a shovel on the upper surface of the filter screen 5.

[0036] As a technical optimization scheme of the utility model, the bottom cavity in the sand screening box 1 is in the shape of a circular truncated cone with a wide upper part and a narrow lower part, concentrates in the bottom position in the sand screening box 1, and improves the sand feeding efficiency.

[0037] As a technical optimization scheme of the utility model, the cross section of the blocking plate 12 is in the shape of a trapezoid with a narrow upper part and a wide lower part and is matched with the discharge chute 13, so that the sealing effect of the blocking plate 12 in the discharge chute 13 is improved.

[0038] As a technical optimization scheme of the utility model, the inner bottom of the discharge box 9 is in the shape of an inclined plane and is matched with the position of the discharge port 10 on the upper part of the sand screening box 1, so that the unqualified sand is conveniently discharged from the sand screening box 1.

[0039] The driving motor 6 and the telescopic device 11 can be purchased in the market, and are mature technologies, which are fully disclosed, so the description is not repeated, the driving motor 6 and the telescopic device 11 are provided with power connection lines, and are electrically connected with the external main controller and 220V phase voltage (or 380V line voltage) through the power lines, and the main controller can be a conventional known device such as a computer which can play a control role.

[0040] Finally, it should be noted that in the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] The above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A filtering and sanding device for a 3D printing device, comprising a sand sieve box (1), characterized in that, The upper part of the sand screening box (1) is provided with an openable box cover (2), the box cover (2) is provided with a feeding pipe (3), the lower part of the sand screening box (1) is provided with a feeding pipe (4) connected with a feeding pump, the inside of the sand screening box (1) is provided with a filter screen (5) for screening sand, the upper part of the box cover (2) is fixedly installed with a driving motor (6), the output end of the driving motor (6) is fixedly installed with a rotating shaft (7) extending into the inside of the sand screening box (1), the lower end side of the rotating shaft (7) is fixedly installed with a plurality of stirring plates (8), one side of the stirring plate (8) abuts against the upper surface of the filter screen (5), and the lower part of the sand screening box (1) is provided with a discharging box (9) for discharging coarse sand.

2. The filtering and sanding device for a 3D printing device according to claim 1, characterized in that The discharging box (9) is fixedly installed on the inner side wall of the sand screening box (1), the discharging box (9) and the sand screening box (1) are both provided with an adapted discharging port (10) on one side, the discharging box (9) is fixedly installed with a telescopic device (11) having a telescopic effect, the telescopic device (11) is fixedly installed with a blocking plate (12) on the telescopic upper end, and the filter screen (5) is provided with an adapted discharging groove (13) on the upper surface.

3. The filtering and sanding device for a 3D printing device according to claim 1, characterized in that, The filter screen (5) is fixedly installed with a plurality of fixed blocks (14) on the side, the inner side wall of the sand screening box (1) is provided with a plurality of installation grooves (15) adapted with the fixed blocks (14) and penetrating through the upper part of the sand screening box (1).

4. The filtering and sanding device for a 3D printing device according to claim 1, characterized in that, The stirring plate (8) is inclined and adapted with the rotating direction of the driving motor (6).

5. The filtering and sanding device for a 3D printing device according to claim 1, characterized in that, The bottom cavity of the sand screening box (1) is in the shape of a circular truncated cone with a wide upper part and a narrow lower part.

6. The filtering and sanding device for a 3D printing device according to claim 2, characterized in that The cross section of the blocking plate (12) is in the shape of a trapezoid with a narrow upper part and a wide lower part and is adapted with the discharging groove (13).

7. The filtering and sanding device for a 3D printing device according to claim 2, characterized in that The bottom of the discharging box (9) is in the shape of an inclined surface and is adapted with the position of the discharging port (10) on the sand screening box (1).

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