Powder spraying and collecting device of offset press

Abstract

The utility model relates to the field of printing devices, in particular to a sprayed powder collecting device of an offset press, which comprises a box body, an air inlet pipe, an air outlet pipe, a filter screen arranged in the box body, a cleaning assembly, a collecting box, a moving assembly, a plurality of telescopic baffle plates and a rotating baffle plate, a fan is arranged in the air inlet pipe, an activated carbon filter element is arranged in the air outlet pipe, the moving assembly is used for driving the collecting box to move, the collecting box is of a top opening structure, the cleaning assembly is arranged at the opening of the collecting box and used for cleaning the filter screen, the telescopic baffle is arranged below the filter screen, and the rotating baffle is arranged below the telescopic baffle. The telescopic baffle and the rotating baffle are used for changing the airflow direction, so that airflow passes through different positions on the filter screen. According to the device, part of the position of the filter screen can be cleaned in the running state of the fan, so that part of the position of the filter screen is filtered, and the cleaning efficiency of the filter screen and the collection efficiency of sprayed powder are improved.

Description

Technical Field

[0001] The present application relates to the field of printing devices, and in particular to a powder collecting device for an offset printing press. Background Art

[0002] An offset printing press is a type of flatbed printing press. During printing, the printed image is first printed from a plate onto a blanket cylinder, which then transfers the printed image to the paper. Within an offset printing press's pressroom, the air often contains a significant amount of offset printing dust. This dust has a high recycling value, so a dust collection device is required to recover this airborne dust.

[0003] Existing powder collection devices use a filter to separate powder from air. When a large amount of powder adheres to the filter, the filter needs to be cleaned. Stopping the machine for cleaning reduces the powder collection efficiency. Cleaning the powder without stopping the machine can easily cause the removed powder to be carried back to the filter by the airflow, reducing the filter cleaning efficiency and, in turn, the powder collection efficiency.

[0004] In view of the above-mentioned related technologies, the inventor believes that the powder collection device has problems such as low filter cleaning efficiency and low powder collection efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a powder collection device for an offset printing press.

[0006] The present application provides a dust collecting device for an offset printing press, which adopts the following technical solution:

[0007] A powder collection device for an offset printing machine comprises a box body, an air inlet pipe, an air outlet pipe, a filter screen arranged in the box body, a cleaning component, a collection box, a movable component, a plurality of telescopic baffles and a rotating baffle; a fan is provided in the air inlet pipe, an activated carbon filter element is provided in the air outlet pipe, the movable component is used to drive the collection box to move, the collection box is a top opening structure, the cleaning component is provided at the opening of the collection box, the cleaning component is used to clean the filter screen, the telescopic baffle is provided below the filter screen, the rotating baffle is provided below the telescopic baffle, the telescopic baffle and the rotating baffle are used to change the direction of airflow so that the airflow passes through different positions on the filter screen.

[0008] By adopting the above technical solution, the telescopic baffle and the rotating baffle can divide the filter into a central area and side areas. When the rotating baffle and the telescopic baffle close the central area, the cleaning assembly cleans the central area of ​​the filter, and the spray powder falls into the collection box, while the airflow can filter through the side areas. When the side areas need to be cleaned, the telescopic baffle descends, and the moving assembly drives the collection box and the cleaning assembly to the side areas. Then, the rotating baffle and the telescopic baffle close the side wall areas, and the cleaning assembly cleans the side areas, while the airflow filters through the central area. The filter can be cleaned without stopping the machine, and the impact of the airflow on the falling spray powder during the cleaning process is reduced, thereby improving the cleaning efficiency of the filter and the collection efficiency of the spray powder.

[0009] Preferably, the telescopic baffle includes a fixed plate, an electric telescopic rod and a telescopic plate arranged on the side wall of the box body, the fixed plate is provided with a mounting groove, the electric telescopic rod is arranged in the mounting groove, the telescopic plate is slidably connected to the mounting groove, one end of the electric telescopic rod is connected to the fixed plate, and the other end is connected to the telescopic plate.

[0010] By adopting the above technical solution, the electric telescopic rod drives the telescopic plate to rise and fall to achieve the closure of different areas of the filter screen, and can move the collection box to different areas for cleaning.

[0011] Preferably, the rotating baffle is rotatably connected to the side wall of the box body through a rotating shaft, the rotating shaft is arranged below the fixed plate, and the rotating shaft is transmission-connected to a first motor, which is arranged on the side wall of the box body.

[0012] By adopting the above technical solution, the first motor drives the rotating baffle to rotate, thereby achieving the closure of different areas, so that the filter screen can be cleaned and filtered at the same time.

[0013] Preferably, a sealing gasket is provided at one end of the rotating baffle away from the rotating shaft.

[0014] By adopting the above technical solution, the provision of the sealing gasket improves the sealing effect of the rotating baffle on different areas of the filter screen, and further reduces the impact of the airflow on the falling spray powder during the cleaning process.

[0015] Preferably, the cleaning assembly includes a scraper arranged in the middle of the collection box opening, the scraper is provided with a cleaning brush, and the cleaning brush abuts against the filter screen.

[0016] By adopting the above technical solution, the scraper and the cleaning brush clean the spray powder attached to the surface of the filter, so that the spray powder falls into the collection box.

[0017] Preferably, the moving assembly includes a reciprocating screw, a slider, a second motor and a limiting slide groove opened on the side wall of the box body, the reciprocating screw and the slider are both arranged in the limiting slide groove, one end of the reciprocating screw is fixedly connected to the transmission shaft of the second motor, and the other end is rotatably connected to the box body, the slider is slidably connected to the limiting slide groove, the slider is threadedly connected to the reciprocating screw, and the slider is connected to the collection box.

[0018] By adopting the above technical solution, the second motor drives the reciprocating screw to rotate, the reciprocating screw drives the slider to slide in the limiting slide groove, and the slider drives the collection box and the cleaning assembly to move, thereby realizing the cleaning of different positions of the filter screen and the collection of spray powder.

[0019] Preferably, the collection box includes a bottom plate and four side plates, a third motor is provided on the side plates, and a transmission shaft of the third motor is connected to the bottom plate.

[0020] By adopting the above technical solution, the third motor drives the bottom plate to rotate, so that the spray powder can fall from the collection box, thereby facilitating the removal of the spray powder from the box.

[0021] Preferably, a cleaning port is provided on the side wall of the box body, a cleaning box is slidably connected to the cleaning port, and the cleaning box is a top-opening structure.

[0022] By adopting the above technical solution, the spray powder falls into the cleaning box, and the staff can take out the cleaning box through the cleaning opening, thereby facilitating the collection of the spray powder.

[0023] Preferably, a limiting groove communicating with the cleaning port is provided on the side wall of the box body, a limiting plate is provided on the cleaning box, the limiting plate is engaged with the limiting groove, and a handle is provided on the limiting plate.

[0024] By adopting the above technical solution, the limiting plate limits the position of the cleaning box, and the cleaning box can be easily taken out through the handle, thereby improving the collection efficiency of the spray powder.

[0025] Preferably, a powder collecting box and an inclined guide plate are provided at the bottom of the box, and a cleaning door for taking out the powder collecting box is provided at the bottom of the box.

[0026] By adopting the above technical solution, part of the falling spray powder falls into the powder collecting box through the guide plate, and the staff can take out the powder collecting box through the cleaning door, thereby realizing the collection of the spray powder.

[0027] In summary, this application has the following beneficial technical effects:

[0028] 1. This application uses a telescopic baffle and a filter baffle to simultaneously clean and filter the filter screen, thereby improving the collection efficiency of the spray powder;

[0029] 2. This application collects the spray powder through a collection box, a cleaning box and a powder collection box, thereby improving the collection efficiency of the spray powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 1 is a schematic cross-sectional view of a powder collecting device for an offset printing press provided in an embodiment of the present application;

[0031] Figure 2 Schematic diagram of the structure of the powder collecting device of the offset printing press provided in an embodiment of the present application;

[0032] Figure 3 Schematic diagram of the cross-sectional structure of the telescopic baffle provided in an embodiment of the present application;

[0033] Figure 4 It is a structural schematic diagram of the cleaning component and collection box provided in an embodiment of the present application.

[0034] Explanation of the accompanying symbols: 1. Box body; 11. Air inlet pipe; 12. Air outlet pipe; 13. Filter; 14. Fan; 15. Activated carbon filter element; 16. Cleaning port; 17. Limiting groove; 18. Cleaning door; 2. Cleaning assembly; 21. Scraper; 22. Cleaning brush; 3. Collecting box; 31. Bottom plate; 32. Side plate; 33. Third motor; 4. Moving assembly; 41. Reciprocating screw; 42. Slider; 43. Second motor; 44. Limiting slide; 5. Telescopic baffle; 51. Fixed plate; 511. Mounting groove; 52. Electric telescopic rod; 53. Telescopic plate; 6. Rotating baffle; 61. Rotating shaft; 62. First motor; 63. Sealing gasket; 7. Cleaning box; 71. Limiting plate; 72. Handle; 8. Guide plate; 9. Powder collection box. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The embodiment of the present application discloses a powder collecting device for an offset printing press.

[0037] Reference Figure 1 、 Figure 2 and Figure 3 A dust collection device for an offset printing press includes a housing 1, an air inlet pipe 11, an air outlet pipe 12, a filter 13 disposed in the housing 1, a cleaning assembly 2, a collection box 3, a movable assembly 4, two telescopic baffles 5, and two rotating baffles 6. A fan 14 is fixedly mounted in the air inlet pipe 11, and an activated carbon filter element 15 is fixedly mounted in the air outlet pipe 12.

[0038] The telescopic baffle 5 is arranged below the filter 13 , and the rotating baffle 6 is arranged below the telescopic baffle 5 . The telescopic baffle 5 and the rotating baffle 6 are used to change the direction of airflow so that the airflow passes through different positions on the filter 13 .

[0039] The telescopic baffle 5 includes a fixed plate 51, an electric telescopic rod 52 and a telescopic plate 53 arranged on the side wall of the box body 1. The fixed plate 51 is provided with a mounting groove 511, the electric telescopic rod 52 is arranged in the mounting groove 511, and the telescopic plate 53 is slidably connected to the mounting groove 511. One end of the electric telescopic rod 52 is connected to the fixed plate 51, and the other end is connected to the telescopic plate 53.

[0040] The rotating baffle 6 is rotatably connected to the side wall of the box body 1 through a rotating shaft 61, which is arranged below the fixed plate 51. The rotating shaft 61 is transmission-connected to a first motor 62, which is arranged on the side wall of the box body 1. A sealing gasket 63 is fixedly arranged on the end of the rotating baffle 6 away from the rotating shaft 61.

[0041] Reference Figure 1 and Figure 4 The moving assembly 4 is used to move the collection box 3, which has an open top structure. The cleaning assembly 2 is disposed at the opening of the collection box 3 and is used to clean the filter 13. The cleaning assembly 2 includes a scraper 21 fixedly disposed in the middle of the opening of the collection box 3. The scraper 21 is fixedly mounted with a cleaning brush 22, which abuts the filter 13.

[0042] The moving assembly 4 includes a reciprocating screw 41, a slider 42, a second motor 43 and a limiting slide 44 opened on the side wall of the box body 1. The reciprocating screw 41 and the slider 42 are both arranged in the limiting slide 44. One end of the reciprocating screw 41 is fixedly connected to the transmission shaft of the second motor 43, and the other end is rotatably connected to the box body 1. The slider 42 is slidably connected to the limiting slide 44, the slider 42 is threadedly connected to the reciprocating screw 41, and the slider 42 is fixedly connected to the collection box 3.

[0043] The collecting box 3 includes a bottom plate 31 and four side plates 32 . A third motor 33 is provided on the side plates 32 , and a transmission shaft of the third motor 33 is connected to the bottom plate 31 .

[0044] A cleaning port 16 is formed on the side wall of the housing 1, into which a cleaning box 7 is slidably connected. The cleaning box 7 has a top-opening structure. A limiting groove 17 is formed on the side wall of the housing 1 and communicates with the cleaning port 16. A limiting plate 71 is fixedly provided on the cleaning box 7, which is engaged with the limiting groove 17 and has a handle 72 fixedly provided on the limiting plate 71.

[0045] A powder collecting box 9 and an inclined guide plate 8 are provided at the bottom of the box body 1 , and a cleaning door 18 for taking out the powder collecting box 9 is provided at the bottom of the box body 1 .

[0046] The embodiment of the present application discloses a powder collection device for an offset printing press, and its operating principle is as follows: a telescopic baffle 5 and a rotating baffle 6 can divide the filter 13 into a central area and side areas. When the rotating baffle 6 and the telescopic baffle 5 close the central area, the cleaning assembly 2 cleans the central area of ​​the filter 13, causing the powder to fall into the collection box 3, while airflow is filtered through the side areas. When the sidewall area needs to be cleaned, the telescopic plate 53 descends, and the moving assembly 4 drives the collection box 3 to the side area. The telescopic plate 53 then ascends, and the rotating baffle 6 rotates to close the side area. The cleaning assembly 2 cleans the side area, while airflow is filtered through the central area. The third motor 33 rotates, transporting the powder to the cleaning box 7, which can then be removed by a worker, thereby collecting the powder. Some of the fallen powder passes through the guide plate 8 and falls into the powder collection box 9, which can then be removed by a worker through the cleaning door 18. The cleaning and filtering of the filter 13 are performed simultaneously, which improves the collection efficiency of the spray powder, reduces the influence of the airflow on the falling process of the spray powder, and improves the cleaning efficiency of the filter 13.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A powder collecting device for an offset printing press, characterized in that: The invention comprises a housing (1), an air inlet pipe (11), an air outlet pipe (12), a filter (13) arranged in the housing (1), a cleaning component (2), a collection box (3), a moving component (4), a plurality of telescopic baffles (5) and a rotating baffle (6); the air inlet pipe (11) is provided with a fan (14), the air outlet pipe (12) is provided with an activated carbon filter element (15), the moving component (4) is used to drive the collection box (3) to move, the collection box (3) is a top-opening structure, the cleaning component (2) is arranged at the opening of the collection box (3), the cleaning component (2) is used to clean the filter (13), the telescopic baffle (5) is arranged below the filter (13), the rotating baffle (6) is arranged below the telescopic baffle (5), and the telescopic baffle (5) and the rotating baffle (6) are used to change the direction of airflow so that the airflow passes through different positions on the filter (13).

2. The dust collecting device for an offset printing press according to claim 1, characterized in that: The telescopic baffle (5) comprises a fixed plate (51), an electric telescopic rod (52) and a telescopic plate (53) arranged on the side wall of the box body (1); a mounting groove (511) is provided on the fixed plate (51); the electric telescopic rod (52) is arranged in the mounting groove (511); the telescopic plate (53) is slidably connected to the mounting groove (511); one end of the electric telescopic rod (52) is connected to the fixed plate (51), and the other end is connected to the telescopic plate (53).

3. The dust collecting device for an offset printing press according to claim 2, characterized in that: The rotating baffle (6) is rotatably connected to the side wall of the box body (1) via a rotating shaft (61). The rotating shaft (61) is arranged below the fixed plate (51). The rotating shaft (61) is transmission-connected to a first motor (62). The first motor (62) is arranged on the side wall of the box body (1).

4. The dust collecting device for an offset printing press according to claim 3, characterized in that: A sealing gasket (63) is provided at one end of the rotating baffle (6) away from the rotating shaft (61).

5. The dust collecting device for an offset printing press according to claim 1, characterized in that: The cleaning assembly (2) comprises a scraper (21) arranged in the middle of the opening of the collection box (3), a cleaning brush (22) being provided on the scraper (21), and the cleaning brush (22) abuts against the filter screen (13).

6. The dust collecting device for an offset printing press according to claim 1, characterized in that: The moving assembly (4) includes a reciprocating screw (41), a slider (42), a second motor (43) and a limiting slide groove (44) provided on the side wall of the box body (1). The reciprocating screw (41) and the slider (42) are both arranged in the limiting slide groove (44). One end of the reciprocating screw (41) is fixedly connected to the transmission shaft of the second motor (43), and the other end is rotationally connected to the box body (1). The slider (42) is slidably connected to the limiting slide groove (44), the slider (42) is threadedly connected to the reciprocating screw (41), and the slider (42) is connected to the collection box (3).

7. The dust collecting device for an offset printing press according to claim 1, characterized in that: The collecting box (3) comprises a bottom plate (31) and four side plates (32). A third motor (33) is provided on the side plates (32), and a transmission shaft of the third motor (33) is connected to the bottom plate (31).

8. The dust collecting device for an offset printing press according to claim 7, characterized in that: A cleaning port (16) is provided on the side wall of the box body (1), a cleaning box (7) is slidably connected to the cleaning port (16), and the cleaning box (7) is a top-opening structure.

9. The dust collecting device for an offset printing press according to claim 8, characterized in that: A limiting groove (17) communicating with the cleaning port (16) is provided on the side wall of the box body (1), and a limiting plate (71) is provided on the cleaning box (7). The limiting plate (71) is engaged with the limiting groove (17), and a handle (72) is provided on the limiting plate (71).

10. The dust collecting device for an offset printing press according to claim 1, characterized in that: A powder collecting box (9) and an inclined guide plate (8) are provided at the bottom of the box (1), and a cleaning door (18) for removing the powder collecting box (9) is provided at the bottom of the box (1).

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