Intermittent automatic cleaning and blowing device for rotary screen

Abstract

The utility model discloses an intermittent automatic cleaning and blowing device with a rotary screen, which is characterized in that the rotary screen is rotatably mounted in a cavity of a wind classifier, a cleaning and blowing device is arranged in the cavity of the wind classifier, and the cleaning and blowing device comprises a cleaning and blowing discharge pipe mounted in the cavity; the cleaning and blowing discharging pipe is located at the inclined lower position of the rotary screen, the axial direction of the cleaning and blowing discharging pipe is parallel to the axial direction of the rotary screen, a plurality of nozzles are arranged on the side, facing the rotary screen, of the cleaning and blowing discharging pipe and are arranged in a row in the axial direction of the cleaning and blowing discharging pipe, the air inlet end of the cleaning and blowing discharging pipe is externally connected with a compressed air source through an air pipe, and an air valve is arranged on the air pipe. Compared with the prior art, the rotary screen cleaning and blowing device has the advantages that the rotary screen is automatically and efficiently cleaned and blown, and the screening effect is prevented from being affected by blockage of the rotary screen.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette processing equipment, and particularly relates to a rotary screen intermittent automatic cleaning and blowing device. Background Art

[0002] During the tobacco processing, a pneumatic classifier is a pneumatic screening device used to remove dust and fines from tobacco shreds. The material enters the cavity tangentially along the rotary screen from the top of the pneumatic classifier. The rotary screen is axially connected to a negative pressure pipeline, and the rotation of the screen drives the material in the cavity to rotate circumferentially along the screen and fall to the lower discharge port. After long-term use, the screen may be blocked, resulting in a decline in the screening effect and affecting the quality of the screened products. Currently, for the cleaning of the rotary screen, generally, the pneumatic classifier is manually opened to manually clean the screen, which is time-consuming and laborious, and the cleaning effect is not ideal. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a rotary screen intermittent automatic cleaning and blowing device to achieve automatic and efficient cleaning and blowing of the rotary screen and avoid its blockage from affecting the screening effect.

[0004] The utility model is realized by the following technical solutions:

[0005] A rotary screen intermittent automatic cleaning and blowing device, in which a rotary screen is rotatably installed in the cavity of a pneumatic classifier, and a cleaning and blowing device is arranged in the cavity of the pneumatic classifier. The cleaning and blowing device includes a cleaning and blowing exhaust pipe installed inside the cavity. The cleaning and blowing exhaust pipe is located obliquely below the rotary screen and the axis is parallel to the axis of the rotary screen. On the side of the cleaning and blowing exhaust pipe facing the rotary screen, a plurality of nozzles are provided. The plurality of nozzles are arranged in a row along the axis of the cleaning and blowing exhaust pipe. The air inlet end of the cleaning and blowing exhaust pipe is externally connected to a compressed air source through a trachea, and a pneumatic valve is arranged on the trachea.

[0006] As a preferred scheme of the above cleaning and blowing device, the pneumatic valve is a two-position two-way solenoid valve.

[0007] As a preferred scheme of the above cleaning and blowing device, the cleaning and blowing exhaust pipe is provided with an installation plane on the side facing the rotary screen. A plurality of installation screw holes are opened on the installation plane of the cleaning and blowing exhaust pipe. The plurality of nozzles are respectively installed in the plurality of installation screw holes by means of threaded connection.

[0008] As a preferred scheme of the above cleaning and blowing device, the rotary screen is completely covered by a plurality of nozzles along the axial direction.

[0009] The utility model has the following advantages compared with the prior art:

[0010] An intermittent automatic cleaning and blowing device for a rotary screen provided by the utility model sprays compressed air through a plurality of nozzles on a cleaning and blowing pipe to achieve full-coverage spraying and cleaning of the rotary screen; effectively reduces the blockage of the mesh holes of the rotary screen, reduces the frequency of manually opening the air classifier to manually clean the rotary screen, saving time and effort; ensures the cleaning effect and cleaning efficiency of the rotary screen, thereby ensuring its screening effect, and further ensuring the quality of the screened products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the utility model.

[0012] Reference numerals in the figure: 1 air classifier; 2 cavity; 3 rotary screen; 4 cleaning and blowing pipe; 5 nozzle; 6 mounting plane; 7 air pipe; 8 air valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The embodiments of the present utility model will be described in detail below. The embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments.

[0014] See Figure 1 , this embodiment discloses an intermittent automatic cleaning and blowing device for a rotary screen 3. A rotary screen 3 is rotatably installed in a cavity 2 of an air classifier 1. A cleaning and blowing device is provided in the cavity 2 of the air classifier 1. The cleaning and blowing device includes a cleaning and blowing pipe 4 fixedly installed inside the cavity 2. The cleaning and blowing pipe 4 is located below the rotary screen 3 obliquely and the axis is parallel to the axis of the rotary screen 3. A plurality of nozzles 5 are provided on the side of the cleaning and blowing pipe 4 facing the rotary screen 3. The plurality of nozzles 5 are arranged in a row along the axis of the cleaning and blowing pipe 4. The rotary screen 3 is completely covered by the plurality of nozzles 5 along the axial direction. An installation plane 6 is provided on the side of the cleaning and blowing pipe 4 facing the rotary screen 3. A plurality of installation screw holes are opened on the installation plane 6 of the cleaning and blowing pipe 4. The plurality of nozzles 5 are installed in the plurality of installation screw holes one by one in a threaded connection manner. The end of the cleaning and blowing pipe 4 is a closed end and the head end is an open air inlet end. The air inlet end of the cleaning and blowing pipe 4 is externally connected to a compressed air source through an air pipe 7. An air valve 8 is provided on the air pipe 7. The air valve 8 is a two-position two-way solenoid valve. According to needs, the intermittent connection of the cleaning and blowing device can be realized through the two-position two-way solenoid valve, so as to realize the intermittent spraying of the cleaning and blowing device.

[0015] When the wind classifier 1 is working, the rotary screen 3 rotates, and the compressed air source is connected through a two-position two-way solenoid valve. The compressed air is ejected through multiple nozzles 5 on the air-blowing drain pipe 4 to achieve the air-blowing cleaning of the rotary screen 3. Along with the rotation of the rotary screen 3 itself, the entire circumferential surface of the rotary screen 3 is covered for air-blowing cleaning, effectively reducing the clogging of the mesh holes of the rotary screen 3, reducing the frequency of manually opening the wind classifier 1 to manually clean the rotary screen 3, saving time and effort, ensuring the cleaning effect and cleaning efficiency of the rotary screen 3, and thus ensuring its screening effect.

[0016] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intermittent automatic cleaning and blowing device for a rotary screen. A rotary screen is rotatably installed in the cavity of a pneumatic classifier, and it is characterized in that: A cleaning device is provided in the cavity of the wind classifier. The cleaning device includes a cleaning exhaust pipe installed inside the cavity. The cleaning exhaust pipe is located diagonally below the rotary screen and its axis is parallel to the axis of the rotary screen. A plurality of nozzles are provided on the side of the cleaning exhaust pipe facing the rotary screen. The plurality of nozzles are arranged in a row along the axis of the cleaning exhaust pipe. The air inlet end of the cleaning exhaust pipe is externally connected to a compressed air source through a trachea, and a pneumatic valve is provided on the trachea.

2. The intermittent automatic cleaning and blowing device with a rotating screen according to claim 1, wherein: The pneumatic valve is a two-position two-way solenoid valve.

3. The intermittent automatic cleaning and blowing device with a rotating screen according to claim 1, characterized in that: The cleaning exhaust pipe is provided with an installation plane on the side facing the rotary screen. A plurality of installation screw holes are opened on the installation plane of the cleaning exhaust pipe. The plurality of nozzles are respectively installed in the plurality of installation screw holes by means of threaded connection.

4. The intermittent automatic cleaning and blowing device with a rotating screen according to claim 1, characterized in that: The rotary screen is completely covered by a plurality of nozzles along the axial direction.

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