Screening device with screen convenient to clean

Abstract

The screening device comprises a screening box, the screen mesh and a cleaning assembly, an opening is formed in the side wall of the screening box, the screen mesh is horizontally and fixedly arranged in the screening box, the cleaning assembly comprises a guide rod and a suction part, the suction part is provided with a suction end, the suction end is tightly attached to the upper surface of the screen mesh, and the screen mesh is arranged on the guide rod. One end of the guide rod penetrates through the opening, extends into the screening box and is connected with the suction end, the movement path of the suction end covers the screen, and by moving the guide rod, the guide rod slides and rotates relative to the rotating shaft, so that the suction end of the suction part moves on the upper surface of the screen, and the movement path of the suction end covers the screen. And foreign matters blocked in screen holes of the screen are extracted through suction force, so that in the process of cleaning the screen, after cleaning is completed, the guide rod is moved, and the suction end is clamped to the opening of the screening box.

Description

Technical Field

[0001] The utility model relates to the technical field of solid material screening, in particular to a screening device which is convenient for cleaning a screen. Background Art

[0002] The screening device is used to screen materials to remove powder materials or granular materials that do not meet size requirements. Specifically, the screening function of the solid materials is achieved through a screen built into the screening device.

[0003] For example, the utility model patent with application number CN201720245107.1 proposes a screen, a powder material or a granular material screening device and a conveying system, which includes a grid, a grid body and a grid body detection device. As shown in the figure and the figure, the grid body is woven by at least one grid wire, and the grid body is fixed on the grid frame. The grid wire is made of conductive material, so the grid wire is conductive, see the figure, the grid body detection device is connected to the grid body and supplies power to the grid body. The grid wire is conductive, so the grid body has electrical characteristics. When power is supplied to the grid body, if some of the grid wires in the grid body are broken, the structure of the grid body will change, and its electrical properties will also change accordingly. Therefore, by detecting the electrical changes of the grid body, it is possible to measure in real time whether there are any grid wires broken in the grid body and whether the screen is damaged.

[0004] However, the sieve holes are easily clogged when the sieve is used for a long time. Currently, the sieve needs to be removed before cleaning, which is inconvenient to clean. Utility Model Content

[0005] In view of this, it is necessary to provide a screening device that is easy to clean the screen to solve the problem that the screen holes are easily blocked after long-term use. At present, the screen needs to be removed before cleaning, which is inconvenient to clean.

[0006] The utility model provides a screening device which is convenient for cleaning a screen, comprising a screening box, a screen and a cleaning assembly, wherein an opening is formed on a side wall of the screening box, the screen is horizontally fixed in the screening box, the cleaning assembly comprises a guide rod and a suction piece, the suction piece has a suction end, the suction end is arranged closely against the upper surface of the screen, one end of the guide rod extends through the opening into the screening box and is connected to the suction end, and the movement path of the suction end covers the screen.

[0007] Furthermore, the cleaning assembly also includes a rotating shaft, which is fixedly arranged on the side wall of the screening box near the opening. A slide groove is provided on the guide rod, and the slide groove is long and strip-shaped. The width of the slide groove is adapted to the diameter of the rotating shaft, and the length of the slide groove is greater than the length of the screen. The rotating shaft is inserted into the slide groove and is connected to the slide groove for sliding and rotation.

[0008] Furthermore, the guide rod includes a first connecting rod and a second connecting rod, the first connecting rod is rotatably connected to one end of the second connecting rod along a horizontal axis direction perpendicular to the second connecting rod, the other end of the second connecting rod extends into the screening box and is connected to the suction end, and the rotating shaft is slidably and rotatably connected to the first connecting rod or the second connecting rod.

[0009] Furthermore, the suction part includes a suction head, a suction pipe and an air pump, the suction head forms the suction end, the suction head is arranged on the upper surface of the screen, one end of the suction pipe is connected to the suction head, and the other end of the suction pipe is connected to the air pump, and the air pump is fixedly connected to one end of the guide rod away from the screening box.

[0010] Furthermore, the suction member further comprises an air box, the air box is fixedly connected to one end of the guide rod away from the screening box, and the air pump is built into the air box.

[0011] Furthermore, a dirt storage cavity is formed in the air box, a filter is provided on the outer wall of the air box, the dirt storage cavity is connected to the outside through the filter, and the air outlet end of the air pump is connected to the dirt storage cavity.

[0012] Furthermore, the cleaning assembly also includes a blowing piece, which is connected to the guide rod. The blowing piece has a blowing end built into the screening box, and the blowing end is arranged close to the lower surface of the screen. The movement path of the blowing piece covers the screen.

[0013] Furthermore, the blowing part includes a blowing head, a blow pipe and an air pump, the blowing head forms the blowing end, the blowing head is arranged on the lower surface of the screen, one end of the blow pipe is connected to the blowing head, and the other end of the blow pipe is connected to the air pump, and the blowing head and the air pump are both fixedly connected to the guide rod.

[0014] Furthermore, it also includes a fixing rod, and the blowing head is fixedly connected to the end of the guide rod away from the screening box via the fixing rod.

[0015] Furthermore, the blowing end of the blowing member is arranged vertically opposite to the suction end of the suction member.

[0016] Compared with the existing technology, by moving the guide rod, the guide rod slides and rotates relative to the rotating shaft, so that the suction end of the suction part moves on the upper surface of the screen, and the movement path of the suction end covers the screen. The foreign matter blocked in the screen holes of the screen is extracted by the suction force, thereby realizing the process of cleaning the screen. After cleaning, the guide rod is moved so that the suction end is stuck to the opening of the screening box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a screening device that facilitates cleaning of the screen provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of the connection between the guide rod and the rotating shaft in the screening device for facilitating cleaning of the screen provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the structure of a guide rod sliding relative to a rotating shaft in a screening device for facilitating screen cleaning provided by an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the structure of the guide rod rotating relative to the rotating shaft in the screening device for facilitating cleaning of the screen provided by an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of the cooperation between a suction member and a blowing member in a screening device for facilitating screen cleaning provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0023] like Figure 1-4 As shown, the utility model provides a screening device that is convenient for cleaning the screen, including a screening box 100, a screen 200 and a cleaning assembly 300. The side wall of the screening box 100 is formed with an opening 110, and the screen 200 is horizontally fixed in the screening box 100. The cleaning assembly 300 includes a guide rod 310 and a suction piece 320. The suction piece 320 has a suction end, which is arranged close to the upper surface of the screen 200. One end of the guide rod 310 extends through the opening 110 to the screening box 100 and is connected to the suction end. The movement path of the suction end covers the screen 200.

[0024] When the screen 200 needs to be cleaned, the guide rod 310 is moved, and the guide rod 310 slides and rotates relative to the rotating shaft 330, so that the suction end of the suction piece 320 moves on the upper surface of the screen 200. The movement path of the suction end covers the screen 200, and the foreign matter blocked in the sieve holes of the screen 200 is extracted by the suction force, thereby realizing the process of cleaning the screen 200. After cleaning, the guide rod 310 is moved so that the suction end is stuck to the opening 110 of the screening box 100.

[0025] The screening box 100 and the screen 200 in this embodiment constitute the basic structure of the screening device. The screen 200 can be vibrated by the vibration motor 210 provided on the screen 200, thereby achieving the function of screening materials.

[0026] The cleaning assembly 300 in this embodiment includes a guide rod 310 and a suction piece 320. The suction piece 320 has a suction end, which is arranged close to the upper surface of the screen 200. One end of the guide rod 310 extends through the opening 110 into the screening box 100 and is connected to the suction end. The movement path of the suction end covers the screen 200.

[0027] like Figure 2 As shown, in order to realize the movement of the suction end on the screen 200, in one embodiment, the cleaning assembly 300 also includes a rotating shaft 330, which is fixed to the side wall of the screening box 100 near the opening 110, and a slide groove 311 is provided on the guide rod 310. The slide groove 311 is long and the width of the slide groove 311 is adapted to the diameter of the rotating shaft 330. The length of the slide groove 311 is greater than the length of the screen 200. The rotating shaft 330 is inserted into the slide groove 311 and is connected to the slide groove 311 for sliding and rotation.

[0028] After cleaning is completed, in order to avoid the guide rod 310 occupying too much external space, in one embodiment, the guide rod 310 includes a first connecting rod 312 and a second connecting rod 313, and the first connecting rod 312 is rotatably connected to one end of the second connecting rod 313 along a horizontal axis direction perpendicular to the second connecting rod 313, and the other end of the second connecting rod 313 extends into the screening box 100 and is connected to the suction end, and the rotating shaft 330 is slidably and rotatably connected to the first connecting rod 312 or the second connecting rod 313.

[0029] The first connecting rod 312 is relatively long and can be rotated to a vertical position and attached to the outer wall of the screening box 100 .

[0030] In one embodiment, the suction member 320 includes a suction head 321, a suction pipe 322 and an air pump 323. The suction head 321 forms a suction end. The suction head 321 is arranged on the upper surface of the screen 200. One end of the suction pipe 322 is connected to the suction head 321, and the other end of the suction pipe 322 is connected to the air pump 323. The air pump 323 is fixedly connected to the end of the guide rod 310 away from the screening box 100.

[0031] It should be noted that the suction tube 322 needs to be a soft tube to accommodate the rotation of the first connecting rod 312 relative to the second connecting rod 313 .

[0032] To protect the air pump 323 , in one embodiment, the suction member 320 further includes an air box 324 . The air box 324 is fixedly connected to one end of the guide rod 310 away from the screening box 100 , and the air pump 323 is built into the air box 324 .

[0033] In order to facilitate the collection of materials extracted by the suction piece 320, in one embodiment, a dirt storage chamber 325 is formed in the air box 324, and a filter is provided on the outer wall of the air box 324. The dirt storage chamber 325 is connected to the outside through the filter, and the air outlet end of the vacuum pump 323 is connected to the dirt storage chamber 325.

[0034] like Figure 5 As shown, in order to improve the efficiency of cleaning the screen 200, the cleaning assembly 300 in this embodiment further includes a blowing member, which is connected to the guide rod 310. The blowing member has a blowing end built into the screening box 100, and the blowing end is arranged closely to the lower surface of the screen 200. The movement path of the blowing member covers the screen 200. The blowing end of the blowing member is arranged vertically opposite to the suction end of the suction member 320.

[0035] In one embodiment, the blowing part includes a blowing head 326, a blow pipe 327 and an air pump 328. The blowing head 326 forms a blowing end. The blowing head 326 is arranged on the lower surface of the screen 200. One end of the blow pipe 327 is connected to the blowing head 326, and the other end of the blow pipe 327 is connected to the air pump 328. The blowing head 326 and the air pump 328 are both fixedly connected to the guide rod 310.

[0036] In one embodiment, a fixing rod is further included, and the air blowing head 326 is fixedly connected to the end of the guide rod 310 away from the screening box 100 via the fixing rod. Specifically, the fixing rod is fixedly connected to the air box 324.

[0037] Working process: By moving the guide rod 310, the guide rod 310 slides and rotates relative to the rotating shaft 330, so that the suction end of the suction piece 320 moves on the upper surface of the screen 200, and the movement path of the suction end covers the screen 200. The foreign matter blocked in the sieve holes of the screen 200 is extracted by the suction force, thereby realizing the process of cleaning the screen 200. After cleaning, move the guide rod 310 so that the suction end is stuck to the opening 110 of the screening box 100.

[0038] Compared with the prior art: by moving the guide rod 310, the guide rod 310 slides and rotates relative to the rotating shaft 330, so that the suction end of the suction piece 320 moves on the upper surface of the screen 200, and the movement path of the suction end covers the screen 200. The foreign matter blocked in the sieve holes of the screen 200 is extracted by the suction force, thereby realizing the process of cleaning the screen 200. After cleaning, move the guide rod 310 so that the suction end is stuck to the opening 110 of the screening box 100.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A screening device that is easy to clean the screen, characterized in that: include: a screening box having a side wall formed with an opening; A screen mesh, which is horizontally fixed in the screening box; A cleaning assembly comprises a guide rod and a suction piece, wherein the suction piece has a suction end, and the suction end is arranged closely against the upper surface of the screen, one end of the guide rod extends through the opening into the screening box and is connected to the suction end, and the movement path of the suction end covers the screen.

2. The screening device for facilitating cleaning of the screen according to claim 1, characterized in that: The cleaning assembly also includes a rotating shaft, which is fixedly arranged on the side wall of the screening box close to the opening. A slide groove is arranged on the guide rod. The slide groove is in the shape of an elongated strip. The width of the slide groove is adapted to the diameter of the rotating shaft. The length of the slide groove is greater than the length of the screen. The rotating shaft is inserted into the slide groove and is connected to the slide groove for sliding and rotation.

3. The screening device for facilitating cleaning of the screen according to claim 2, characterized in that: The guide rod includes a first connecting rod and a second connecting rod, the first connecting rod is rotatably connected to one end of the second connecting rod along a horizontal axis direction perpendicular to the second connecting rod, the other end of the second connecting rod extends into the screening box and is connected to the suction end, and the rotating shaft is slidably and rotatably connected to the first connecting rod or the second connecting rod.

4. The screening device for facilitating cleaning of the screen according to claim 1, characterized in that: The suction device includes a suction head, a suction pipe and an suction pump. The suction head forms the suction end. The suction head is arranged on the upper surface of the screen. One end of the suction pipe is connected to the suction head, and the other end of the suction pipe is connected to the suction pump. The suction pump is fixedly connected to one end of the guide rod away from the screening box.

5. The screening device for facilitating cleaning of the screen according to claim 4, characterized in that: The suction member further comprises an air box, the air box is fixedly connected to one end of the guide rod away from the screening box, and the air pump is built in the air box.

6. The screening device for facilitating cleaning of the screen according to claim 5, characterized in that: A dirt storage cavity is formed in the air box, a filter screen is arranged on the outer wall of the air box, the dirt storage cavity is connected with the outside through the filter screen, and the air outlet end of the air pump is connected with the dirt storage cavity.

7. The screening device for facilitating cleaning of the screen according to claim 1, characterized in that: The cleaning assembly also includes a blowing member, which is connected to the guide rod. The blowing member has a blowing end built into the screening box. The blowing end is arranged close to the lower surface of the screen, and the movement path of the blowing member covers the screen.

8. The screening device for facilitating screen cleaning according to claim 7, characterized in that: The blowing component includes a blowing head, a blow pipe and an air pump. The blowing head forms the blowing end. The blowing head is arranged on the lower surface of the screen. One end of the blow pipe is connected to the blowing head, and the other end of the blow pipe is connected to the air pump. The blowing head and the air pump are both fixedly connected to the guide rod.

9. The screening device for facilitating screen cleaning according to claim 8, characterized in that: It also includes a fixing rod, through which the air blowing head is fixedly connected to an end of the guide rod away from the screening box.

10. The screening device for facilitating cleaning of the screen according to claim 7, characterized in that: The blowing end of the blowing member is arranged vertically opposite to the suction end of the suction member.

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