Quicksand painting

Abstract

The utility model discloses a quicksand painting which comprises a display unit, the display unit comprises a glass cavity, a painting frame, filling liquid and quicksand, the quicksand painting further comprises a driving unit, the driving unit comprises a driving assembly and a control module, and the control module controls the driving assembly to rotate the display unit to change pictures. By arranging the driving device, manual operation is not needed, and picture change is more convenient; pictures are automatically changed, so that aesthetic fatigue of appreciators caused by long-time single display due to lack of manual active rotation of the pictures can be avoided, attention is attracted, and freshness is brought; due to automatic change of the picture, the quicksand painting can be placed at a high position, in a showcase or in other places with good display effect but inconvenient to manually adjust the position of the picture for display, and the application scene is expanded.

Description

Technical Field

[0001] The utility model relates to a display device, in particular to a dynamic display device, specifically a sand painting. Background Art

[0002] A sand painting is a dynamic decorative article that can change the form of the picture by using the fluidity of sand and the action of gravity to limit the movement range of sand grains through a picture frame and a glass sheet. The picture frame can be circular, rectangular, etc. When the sand grains completely fall from the upper part of the glass cavity to the lower part of the cavity, if no external force is applied for interference, the form of the sand painting will remain unchanged. If different patterns are to be formed, it is necessary to turn the glass cavity of the sand painting up and down so that the upper and lower cavities are swapped, and then the sand grains are dropped from the upper position again to form a new pattern. For the existing sand paintings to achieve this change process, the user needs to actively dial or roll the picture frame, and the sand painting itself cannot independently complete the update of the picture, and the operation is relatively cumbersome. At the same time, this characteristic also makes the use environment of the device must be a place where the user can easily adjust the picture frame, and the use scenario is limited. Content of the Utility Model

[0003] The utility model aims at the deficiencies in the prior art and provides a sand painting, which includes a display unit. The display unit includes a glass cavity, a picture frame, a filling liquid and sand, and also includes a driving unit. The driving unit includes a driving component and a control module. The control module controls the driving component to rotate the display unit to change the picture.

[0004] Preferably, the display unit further includes a display ring. The display ring is fixed on the outer circle of the picture frame. The driving unit further includes a base. The display ring is rotationally connected with the base.

[0005] Preferably, a display groove is formed on one side of the base. The driving component is arranged in the base. The bottom of the display ring is movably connected in the display groove.

[0006] Preferably, the driving component includes a driving motor, a driving shaft, a driving roller and a limiting device.

[0007] Preferably, the base is arranged below the display unit. The driving motor is horizontally arranged on the inner wall of the base. The driving shaft is sleeved on the output shaft of the driving motor. A driving roller is sleeved outside the driving shaft. The top of the driving roller is tangent to and frictionally rolls with the circumferential surface of the bottom of the display ring.

[0008] Preferably, the limiting device includes limiting rollers. The limiting rollers are arranged on the inner wall of the base. The limiting rollers rotate freely around their own axes. A plurality of the limiting rollers are respectively arranged vertically on both sides of the driving roller. The side walls of the limiting rollers are tangent to the bottom end face of the display ring. On the other side of the display ring, two limiting rollers are symmetrically arranged. The side walls of the two symmetrically arranged limiting rollers are also rotationally tangent to the bottom end face of the other end of the display ring.

[0009] Preferably, the limiting device includes limiting rollers. The limiting rollers are arranged on the inner wall of the base. The limiting rollers rotate freely around their own axes. A plurality of the limiting rollers are respectively arranged horizontally and rotatably on both sides of the driving roller, and the side walls of the limiting rollers are rotationally tangent to the lower circumferential surface of the display ring.

[0010] Preferably, the base is arranged above the display unit. The driving motor is arranged horizontally on the inner wall of the base. The driving shaft is sleeved on the output shaft of the driving motor. A driving roller is sleeved outside the driving shaft. The bottom of the driving roller is tangent to and frictionally rolls on the top circumferential surface of the display ring.

[0011] Preferably, one side of the display ring protrudes from the outer wall of the glass. The limiting device includes limiting rollers. The limiting rollers are arranged on the inner wall of the base. The limiting rollers rotate freely around their own axes. The limiting rollers are arranged horizontally below the driving roller. The upper part of the side wall of the limiting roller is rotationally tangent to the top of the inner ring of the display ring.

[0012] Preferably, the base is arranged on one side of the display unit. The driving motor is arranged horizontally on the inner wall of the base. The driving shaft is sleeved on the output shaft of the driving motor. A driving roller is sleeved outside the driving shaft. The side wall of the driving roller is tangent to and frictionally rolls on the circumferential surface of one side of the display ring.

[0013] Preferably, one side of the display ring protrudes from the outer wall of the glass. The limiting device includes limiting rollers. The limiting rollers are arranged on the inner wall of the base. The limiting rollers rotate freely around their own axes. The limiting rollers are arranged horizontally on the side of the driving roller close to the center of the display ring. The side wall part of the limiting roller is rotationally tangent to the inner ring side wall of the display ring.

[0014] Preferably, support rods are arranged on both sides of the base. Rotating shaft holes are symmetrically arranged in the middle of both side walls of the display ring. The driving assembly is arranged on the upper part of the support rods. The driving assembly can rotate the display ring.

[0015] Preferably, the driving assembly includes a driving motor and a driving shaft. The driving motor is horizontally arranged in the upper inner cavity of the support rod. The driving shaft is sleeved with the driving motor shaft and rotates synchronously. The driving shaft is fixedly inserted into the rotating shaft hole. The other rotating shaft hole is rotatably connected to the other support rod through a movable shaft.

[0016] Preferably, the control module includes a controller. The controller is electrically connected to the driving motor, and the controller controls the rotation speed and rotation direction of the driving motor.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: By setting up the driving device, manual operation is not required, and the change of the picture is more convenient; The picture changes automatically, which can avoid the aesthetic fatigue of the viewers caused by the long-term single display when the picture lacks manual active rotation, attract attention and bring a sense of freshness; Since the picture changes automatically, the flowing sand painting can be placed at a high place, inside a display cabinet or other positions with good display effects but inconvenient for manual adjustment of the picture for display, expanding the application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will discuss the drawings required for describing the embodiments or the prior art. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments and their drawings can be obtained according to these embodiments shown in the drawings.

[0019] Figure 1 is a three-dimensional structural schematic diagram of a flowing sand painting of the present utility model.

[0020] Figure 2 is a front view structural schematic diagram of a flowing sand painting of the present utility model.

[0021] Figure 3 is a partial side view sectional view of a flowing sand painting of the present utility model.

[0022] Figure 4 is a schematic diagram of the combined part of the driving unit of a flowing sand painting of the present utility model.

[0023] Figure 5 is a partial sectional view of the base part of a flowing sand painting of the present utility model.

[0024] Figure 6 is a partial double-limiting sectional view of a flowing sand painting of the present utility model.

[0025] Figure 7 is a partial rotary sectional view of a flowing sand painting of the present utility model.

[0026] Figure 8 is a side-rotating partial cross-sectional view of a flowing sand painting of the present utility model.

[0027] Figure 9 is a side-rotating top-down partial cross-sectional view of a flowing sand painting of the present utility model.

[0028] Figure 10 is a schematic diagram of a side flipping drive structure of a flowing sand painting of the present utility model.

[0029] In the figure: 1 - display ring, 2 - base, 21 - display slot, 22 - drive roller, 23 - drive motor, 24 - drive shaft, 3 - limiting roller. Specific embodiments

[0030] The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments described in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present utility model.

[0031] Embodiments of the present utility model: Embodiment 1 discloses a flowing sand painting, as Figures 1 to 5 shown. The flowing sand painting device includes a display unit and a drive unit. The display unit includes a glass cavity, a picture frame, a filling liquid, and flowing sand. Two layers of glass are parallelly embedded in the picture frame to form the glass cavity, and the edges of the glass are hermetically inlaid with the picture frame. The flowing sand is filled into the glass cavity, and the glass cavity is divided into upper and lower cavities by filling the filling liquid. In the initial state, the upper cavity is air and the filling liquid, and the lower cavity is flowing sand. The filling liquid is preferably pure water. The display unit further includes a display ring 1, and the display ring 1 is arranged to match the picture frame and is fixedly sleeved outside the picture frame or the display ring 1 is integrally provided with the picture frame.

[0032] The described driving unit includes a base 2, a driving component, and a control module. The base 2 is arranged below the display unit. An exhibition groove 21 is formed at the top of the base 2, and the interior of the base 2 is a hollow cavity. The bottom of the display ring 1 is movably connected to the exhibition groove 21. The driving component is arranged inside the base 2. The driving component includes a driving motor 23, a driving shaft 24, a driving roller 22, and a limiting device. The driving motor 23 is horizontally arranged on the inner side wall of the base 2 through a motor base. The driving shaft 24 is sleeved on the output shaft of the driving motor 23 and rotates synchronously with the output shaft. A driving roller 22 is sleeved outside the driving shaft 24, and the driving roller 22 rotates synchronously with the driving shaft 24. The top of the driving roller 22 is tangent to the circumferential surface of the bottom of the display ring 1, and the driving roller 22 frictionally rolls with the display ring 1. The limiting device includes a limiting roller 3. The limiting roller 3 is rotatably arranged on a limiting roller 3 support seat, and the limiting roller 3 support seat is fixed on the inner wall of the base 2. The limiting roller 3 freely rotates around its own axis. Two of the limiting rollers 3 are respectively vertically arranged on both sides of the driving roller 22, and the side walls of the two limiting rollers 3 are tangent to the bottom end face of the display ring 1 to limit the freedom of the display ring 1 to rotate left and right. On the other side of the display ring 1, two of the limiting rollers 3 are symmetrically arranged, and the side walls of the two symmetrically arranged limiting rollers 3 are also tangent to the bottom end face of the other end of the display ring 1. The display ring 1 is rotationally clamped between the limiting rollers 3 symmetrically arranged at both ends to limit the freedom of the display ring 1 to move back and forth.

[0033] The described control module is arranged inside the base 2. The control module includes a controller and a power supply module. The controller is electrically connected to the driving motor 23. The controller controls the rotation speed and rotation direction of the driving motor 23. The power supply module includes a storage battery, and the storage battery is electrically connected to the controller and the driving motor 23.

[0034] In the use state, the control module controls the driving motor 23 to preset the timing according to the falling speed of the flowing sand in the display unit. After reaching the set time, it controls the driving motor 23 to rotate. The transmission ratio of the driving motor 23 and the driving roller 22 to the display ring 1 is fixed. Therefore, after rotating a set number of turns, the display unit rotates 180°. After the lower cavity rotates to the upper part, the flowing sand falls from the new upper cavity, generating a new falling effect and picture shape.

[0035] Embodiment 2, as Figure 6 shown, discloses a flowing sand painting. The flowing sand painting device includes a display unit and a driving unit, and the structure of the display unit is the same as that of Embodiment 1.

[0036] The described driving unit includes a base 2, a driving component, and a control module. The base 2 is arranged below the display unit. An exhibition groove 21 is formed at the top of the base 2, and the interior of the base 2 is a hollow cavity. The bottom of the display ring 1 is movably connected to the exhibition groove 21. The driving component is arranged inside the base 2. The driving component includes a driving motor 23, a driving shaft 24, a driving roller 22, and a limiting device. The driving motor 23 is horizontally arranged on the inner side wall of the base 2 through a motor seat. The driving shaft 24 is sleeved on the output shaft of the driving motor 23 and rotates synchronously with the output shaft. A driving roller 22 is sleeved outside the driving shaft 24, and the driving roller 22 rotates synchronously with the driving shaft 24. The top of the driving roller 22 is tangent to the circumferential surface of the bottom of the display ring 1, and the driving roller 22 rolls frictionally with the display ring 1. The limiting device includes a limiting roller 3. The limiting roller 3 is rotatably arranged on a limiting roller support. The limiting roller support is fixed on the inner side wall of the base 2, and the limiting roller 3 rotates freely around its own axis. Two of the limiting rollers 3 are horizontally arranged on both sides of the driving roller 22 respectively, and the side walls of the two limiting rollers 3 are tangent to the circumferential surface of the display ring 1 to limit the display ring 1.

[0037] The control module is arranged inside the base 2. The control module includes a controller and a power supply module. The controller is electrically connected to the driving motor 23. The controller controls the rotation speed and rotation direction of the driving motor 23. The power supply module includes a storage battery. The storage battery is electrically connected to the controller and the driving motor 23.

[0038] In the use state, the control module controls the driving motor 23 to preset the timing according to the falling speed of the flowing sand in the display unit. After reaching the set time, it controls the driving motor 23 to rotate. The transmission ratio of the driving motor 23 and the driving roller 22 to the display ring 1 is fixed. Therefore, after rotating a set number of turns, the display unit rotates 180°. After the lower cavity rotates to the upper part, the flowing sand falls from the new upper cavity, generating a new falling effect and picture shape.

[0039] Embodiment 3, as Figure 7As shown in the figure, the quicksand painting device includes a display unit and a driving unit. The display unit includes a glass cavity, a picture frame, a filling liquid, and quicksand. Two layers of glass are parallelly embedded in the picture frame to form the glass cavity, and the edges of the glass are hermetically fitted with the picture frame. The quicksand is filled into the glass cavity, and the glass cavity is divided into upper and lower cavities by filling the filling liquid. In the initial state, the upper cavity is filled with air and the filling liquid, and the lower cavity is filled with quicksand. The filling liquid is preferably pure water. The display unit further includes a display ring 1, which is arranged to match the picture frame and is fixedly sleeved outside the picture frame or integrally formed with the picture frame. One side of the display ring 1 protrudes from the outer wall of the glass.

[0040] The driving unit includes a base 2, a driving component, and a control module. The base 2 is arranged on the top of the display unit. A display groove 21 is opened at the bottom of the base 2, and the inside of the base 2 is a hollow cavity. The top of the display ring 1 is movably connected to the display groove 21. The driving component is arranged inside the base 2. The driving component includes a driving motor 23, a driving shaft 24, a driving roller 22, and a limiting device. The driving motor 23 is horizontally arranged on the inner side wall of the base 2 through a motor seat. The driving shaft 24 is sleeved on the output shaft of the driving motor 23 and rotates synchronously with the output shaft. A driving roller 22 is sleeved outside the driving shaft 24 and rotates synchronously with the driving shaft 24. The top of the driving roller 22 is tangent to the circumferential surface of the top of the display ring 1, and the driving roller 22 frictionally rolls with the display ring 1. The limiting device includes a limiting roller 3, which is rotatably arranged on a limiting roller 3 support. The limiting roller 3 support is fixed to the inner wall of one side of the base 2. The limiting roller 3 rotates freely around its own axis. The limiting roller 3 is horizontally and rollingly arranged below the driving roller 22. The side wall of the limiting roller 3 is tangent to the highest point of the inner circumferential surface of the display ring 1. The driving roller 22 and the limiting roller 3 rotationally clamp and limit the display ring 1.

[0041] The control module is arranged inside the base 2. The control module includes a controller and a power supply module. The controller is electrically connected to the driving motor 23. The controller controls the rotation speed and direction of the driving motor 23. The power supply module includes a storage battery, and the storage battery is electrically connected to the controller and the driving motor 23.

[0042] In the working state, the control module controls the driving motor 23 to perform preset timing according to the falling speed of the flowing sand in the display unit. After reaching the set time, it controls the driving motor 23 to rotate. The transmission ratio of the driving motor 23 and the driving roller 22 to the display ring 1 is fixed. The limiting roller 3 also rotates continuously due to friction at the highest point of the inner circle of the display ring 1. Therefore, after rotating a set number of turns, the display unit rotates 180°. After the lower cavity rotates to the upper part, the flowing sand falls from the new upper cavity, generating a new falling effect and picture shape.

[0043] Embodiment 4, as Figure 8 、 9 shown, the flowing sand painting device includes a display unit and a driving unit. The display unit includes a glass cavity, a picture frame, a filling liquid, and flowing sand. Two layers of glass are parallelly embedded in the picture frame to form the glass cavity, and the edges of the glass are hermetically inlaid with the picture frame. The flowing sand is filled into the glass cavity, and the glass cavity is divided into upper and lower cavities by filling the filling liquid. In the initial state, the upper cavity is air and the filling liquid, and the lower cavity is flowing sand. The filling liquid is preferably pure water. The display unit further includes a display ring 1, and the display ring 1 is arranged to match the picture frame and is fixedly sleeved outside the picture frame or the display ring 1 is integrally provided with the picture frame. One side of the display ring 1 protrudes from the outer wall of the glass.

[0044] The driving unit includes a base 2, a driving component, and a control module. The base 2 is arranged on the left side of the display unit. A display groove 21 is opened at the bottom of the base 2, and the inside of the base 2 is a hollow cavity. The left side of the display ring 1 is movably connected to the display groove 21. The driving component is arranged inside the base 2. The driving component includes a driving motor 23, a driving shaft 24, a driving roller 22, and a limiting device. The driving motor 23 is horizontally arranged on the inner side wall of the base 2 through a motor seat. The driving shaft 24 is sleeved on the output shaft of the driving motor 23 and rotates synchronously with the output shaft. A driving roller 22 is sleeved outside the driving shaft 24, and the driving roller 22 rotates synchronously with the driving shaft 24. The top of the driving roller 22 is tangent to the left circumferential surface of the display ring 1, and the driving roller 22 rolls frictionally with the display ring 1. The limiting device includes a limiting roller 3. The limiting roller 3 is rotatably arranged on a limiting roller 3 support seat, and the limiting roller 3 support seat is fixed on the inner wall of one side of the base 2. The limiting roller 3 rotates freely around its own axis. The limiting roller 3 is horizontally arranged and rolls below the driving roller 22. The side wall of the limiting roller 3 is tangent to the left inner circumferential surface of the display ring 1, and the driving roller 22 and the limiting roller 3 rotationally clamp and limit the display ring 1.

[0045] The described control module is arranged in the base 2. The control module includes a controller and an energy supply module. The controller is electrically connected to the drive motor 23. The controller controls the rotation speed and direction of the drive motor 23. The energy supply module includes a storage battery. The storage battery is electrically connected to the controller and the drive motor 23.

[0046] In the use state, the control module controls the drive motor 23 to preset the timing according to the falling speed of the quicksand in the display unit. After reaching the set time, it controls the drive motor 23 to rotate. The transmission ratio of the drive motor 23 and the drive roller 22 to the display ring 1 is fixed. The limiting roller 3 also rotates continuously under friction at the leftmost side of the inner circle of the display ring 1. Therefore, after rotating a set number of turns, the display unit rotates 180°. After the lower cavity rotates to the upper part, the quicksand falls from the new upper cavity, generating a new falling effect and picture shape.

[0047] Example 5, as Figure 10 As shown, the quicksand painting device includes a display unit and a drive unit. The display unit includes a glass cavity, a picture frame, a filling liquid and quicksand. Two layers of glass are parallelly embedded in the picture frame to form the glass cavity. The glass edges are hermetically inlaid with the picture frame. The quicksand is filled into the glass cavity. The glass cavity is divided into upper and lower cavities by filling the filling liquid. In the initial state, the upper cavity is air and the filling liquid, and the lower cavity is quicksand. The filling liquid is preferably pure water. The display unit further includes a display ring 1. The display ring 1 is arranged to match the picture frame and is fixedly sleeved outside the picture frame or the display ring 1 is integrally provided with the picture frame. The middle parts of the two side walls of the display ring 1 are symmetrically provided with rotating shaft holes. The rotating shaft holes are blind holes.

[0048] The drive unit includes a base 2, a drive assembly and a control module. The base 2 is arranged below the display unit. The two sides of the base 2 are provided with support rods. The support rods are arc-shaped rods. The inner sides of the upper parts of the support rods are provided with cavities. The drive assembly includes a drive motor 23 and a drive shaft 24. The drive motor 23 is horizontally arranged in the cavity. The drive shaft 24 is sleeved on the shaft of the drive motor 23 and rotates synchronously. One end of the drive shaft 24 protrudes from the support rod and is fixedly sleeved in the rotating shaft hole on the side wall of the display ring 1, so that the display ring 1 rotates synchronously with the drive motor 23. The other rotating shaft hole is rotationally connected to the support rod through a movable shaft.

[0049] The described control module is arranged inside the base 2. The control module includes a controller and an energy supply module. The controller is electrically connected to the drive motor 23. The controller controls the rotation speed and rotation direction of the drive motor 23. The energy supply module includes a storage battery. The storage battery is electrically connected to the controller and the drive motor 23.

[0050] In the use state, the control module controls the drive motor 23 to perform preset timing according to the falling speed of the flowing sand in the display unit. After reaching the set time, it controls the drive motor 23 to rotate. The drive shaft 24 rotates synchronously with the rotation of the display ring 1. Therefore, when the output shaft of the drive motor 23 rotates 180°, the display unit rotates 180°. After the lower cavity rotates to the upper part, the flowing sand falls from the new upper cavity, generating a new falling effect and picture shape.

[0051] In the above embodiment, a button can be arranged on the base. The button is electrically connected to the controller. By connecting the button, the drive motor works to rotate the display unit, thereby forming a new picture. In addition, a receiver and a remote controller can also be arranged. By operating the remote controller to send instructions, the receiver is electrically connected to the controller. The receiver transmits the received operation signal to the controller, causing the drive motor to work and rotate the display unit, thereby forming a new picture.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flowing sand painting, comprising a display unit, and the display unit includes a glass cavity, a picture frame, filling liquid and flowing sand, characterized in that: it further includes a driving unit, and the driving unit includes a driving component and a control module, and the control module controls the driving component to rotate the display unit to change the picture.

2. The flowing sand painting according to claim 1, characterized in that: the display unit further includes a display ring (1), the display ring (1) is fixed on the outer circle of the picture frame, the driving unit further includes a base (2), and the display ring (1) is rotatably connected to the base (2).

3. The flowing sand painting according to claim 2, characterized in that: a display groove (21) is formed on one side of the base (2), the driving component is arranged in the base (2), and the bottom of the display ring (1) is movably connected in the display groove (21).

4. The flowing sand painting according to claim 3, characterized in that: the driving component includes a driving motor (23), a driving shaft (24), a driving roller (22) and a limiting device.

5. The flowing sand painting according to claim 4, characterized in that: the base (2) is arranged below the display unit, the driving motor (23) is horizontally arranged on the inner wall of the base (2), the driving shaft (24) is sleeved on the output shaft of the driving motor (23), a driving roller (22) is sleeved outside the driving shaft (24), and the top of the driving roller (22) is tangent to and frictionally rolls on the circumferential surface of the bottom of the display ring (1).

6. The flowing sand painting according to claim 5, characterized in that: the limiting device includes a limiting roller (3), the limiting roller (3) is arranged on the inner wall of the base (2), the limiting roller (3) rotates freely around its own axis, a plurality of the limiting rollers (3) are respectively vertically arranged on both sides of the driving roller (22), the side wall of the limiting roller (3) is tangent to the bottom end surface of the display ring (1), and two of the limiting rollers (3) are symmetrically arranged on the other side of the display ring (1), and the side walls of the two symmetrically arranged limiting rollers (3) are also rotationally tangent to the bottom end surface of the other end of the display ring (1).

7. The flowing sand painting according to claim 5, characterized in that: the limiting device includes a limiting roller (3), the limiting roller (3) is arranged on the inner wall of the base (2), the limiting roller (3) rotates freely around its own axis, a plurality of the limiting rollers (3) are respectively horizontally and rotatably arranged on both sides of the driving roller (22), and the side wall of the limiting roller (3) is rotationally tangent to the lower circumferential surface of the display ring (1).

8. The flowing sand painting according to claim 4, characterized in that: The described base (2) is arranged above the display unit. The driving motor (23) is horizontally arranged on the inner wall of the base (2). The driving shaft (24) is sleeved on the output shaft of the driving motor (23). A driving roller (22) is sleeved outside the driving shaft (24). The bottom of the driving roller (22) is tangent to and frictionally rolls on the circumferential surface of the top of the display ring (1).

9. A kind of flowing sand painting according to claim 8, characterized in that: One side of the display ring (1) protrudes from the outer wall of the glass. The limiting device includes a limiting roller (3). The limiting roller (3) is arranged on the inner wall of the base (2). The limiting roller (3) rotates freely around its own axis. The limiting roller (3) is horizontally arranged below the driving roller (22). The upper part of the side wall of the limiting roller (3) is rotationally tangent to the top of the inner ring of the display ring (1).

10. A kind of flowing sand painting according to claim 4, characterized in that: The base (2) is arranged on one side of the display unit. The driving motor (23) is horizontally arranged on the inner wall of the base (2). The driving shaft (24) is sleeved on the output shaft of the driving motor (23). A driving roller (22) is sleeved outside the driving shaft (24). The side wall of the driving roller (22) is tangent to and frictionally rolls on the circumferential surface of one side of the display ring (1).

11. A kind of flowing sand painting according to claim 10, characterized in that: One side of the display ring (1) protrudes from the outer wall of the glass. The limiting device includes a limiting roller (3). The limiting roller (3) is arranged on the inner wall of the base (2). The limiting roller (3) rotates freely around its own axis. The limiting roller (3) is horizontally arranged on the side of the driving roller (22) close to the center of the display ring (1). The side wall part of the limiting roller (3) is rotationally tangent to the inner ring side wall of the display ring (1).

12. A kind of flowing sand painting according to claim 2, characterized in that: Support rods are arranged on both sides of the base (2). Rotating shaft holes are symmetrically arranged in the middle of both side walls of the display ring (1). The driving component is arranged on the upper part of the support rod. The driving component can rotate the display ring (1).

13. A kind of flowing sand painting according to claim 12, characterized in that: The driving component includes a driving motor (23) and a driving shaft (24). The driving motor (23) is horizontally arranged in the inner cavity of the upper part of the support rod. The driving shaft (24) is sleeved and synchronously rotated with the driving motor (23). The driving shaft (24) is fixedly inserted into the rotating shaft hole. The rotating shaft hole on the other side is rotatably connected to the other support rod through a movable shaft.

14. A kind of flowing sand painting according to claim 1, characterized in that: The control module includes a controller. The controller is electrically connected to the driving motor (23). The controller controls the rotation speed and rotation direction of the driving motor (23).

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