Self-cleaning cooling nozzle system of airflow cut-tobacco drier

Abstract

The utility model discloses a self-cleaning cooling nozzle system of an airflow cut-tobacco dryer, which comprises a cooling nozzle, an air inlet of the cooling nozzle is connected to a compressed air source through an air inlet pipe, an injection air valve, a filter, a pressure reducing valve and a pressure gauge are sequentially arranged on the air inlet pipe along the airflow direction, and a check valve is further arranged on the air inlet pipe. The check valve is positioned between the pressure gauge and the cooling nozzle; a blowing cleaning air pipe is arranged on the air inlet pipe in parallel, the air inlet end of the blowing cleaning air pipe is located on the upstream portion of the injection air valve, the air outlet end of the blowing cleaning air pipe is located on the downstream portion of the check valve, and a blowing cleaning air valve is arranged on the blowing cleaning air pipe. Compared with the prior art, the cooling nozzle cleaning device has the advantages that direct online blowing cleaning of the cooling nozzle is achieved, and frequent blockage of the cooling nozzle is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette processing equipment, in particular to a self-cleaning cooling nozzle system for an airflow tobacco drying machine. Background Art

[0002] The airflow tobacco drying machine is a device used to dry tobacco shreds. Its principle is mainly to use high-speed hot air to dry tobacco. Between production batches, cooling water is sprayed into the process pipeline through the cooling nozzle to cool the process gas in the process pipeline. The cooling nozzle adopts a dual-media nozzle, in which compressed air is used as the gas medium and cooling water is used as the liquid medium. Because the cooling nozzle is only turned on when the equipment enters the cooling state, it is not turned on during the normal production process of the equipment. During the normal production process of the equipment, under high temperature and high humidity conditions, dust and debris are easy to gather at the cooling nozzle mouth, causing the cooling nozzle to be blocked, resulting in the cooling nozzle cannot be used effectively, which makes the cooling time of the equipment process gas longer, affecting the equipment operation efficiency.

[0003] At present, the cooling nozzle is generally disassembled for offline cleaning. The disassembly and cleaning cycle of the cooling nozzle is generally once every three months. Each disassembly and assembly requires two people and takes nearly four hours, which is time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provides a self-cleaning cooling nozzle system for an airflow tow drying machine, so as to realize direct online spray cleaning of the cooling nozzle and avoid frequent blockage of the cooling nozzle.

[0005] The utility model is realized by the following technical solutions:

[0006] A self-cleaning cooling nozzle system for an airflow wire drying machine, the cooling nozzle system comprising a cooling nozzle, the air inlet of the cooling nozzle being connected to a compressed air source via an air inlet pipe, the air inlet pipe being provided with an ejection air valve, a filter, a pressure reducing valve and a pressure gauge in sequence along the air flow direction, the air inlet pipe being also provided with a check valve, the check valve being located between the pressure gauge and the cooling nozzle; a spray cleaning air pipe being provided in parallel with the air inlet pipe, the air inlet end of the spray cleaning air pipe being located upstream of the ejection air valve, the air outlet end of the spray cleaning air pipe being located downstream of the check valve, and a spray cleaning air valve being provided on the spray cleaning air pipe.

[0007] As a preferred solution of the above self-cleaning cooling nozzle system, the cleaning air blowing valve and the ejection air valve are both solenoid valves.

[0008] As a preferred embodiment of the self-cleaning cooling nozzle system, the pressure of the compressed air source is 6 bar.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] The utility model provides a self-cleaning cooling nozzle system for an airflow tobacco drying machine, wherein a blowing cleaning air pipe is bypassed on the air inlet pipe of the cooling nozzle, the blowing cleaning air pipe is directly connected to a compressed air source and the cooling nozzle, and a blowing cleaning air valve is arranged on the blowing cleaning air pipe to realize on-off control of the blowing cleaning air pipe, so that compressed air can be directly sprayed on the cooling nozzle, forming an airflow flushing on the cooling nozzle portion that needs to be cleaned, realizing direct online cleaning of the cooling nozzle, avoiding frequent blockage of the cooling nozzle, reducing the labor intensity of maintenance personnel, and ensuring equipment operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Numbers in the figure: 1 cooling nozzle; 2 water inlet pipe; 3 pneumatic diaphragm valve; 4 air inlet pipe; 5 injection air valve; 6 filter; 7 pressure reducing valve; 8 pressure gauge; 9 check valve; 10 spray cleaning air pipe; 11 spray cleaning air valve. DETAILED DESCRIPTION

[0013] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0014] See also Figure 1 The present embodiment discloses a self-cleaning cooling nozzle system for airflow wire drying machine, the cooling nozzle system comprises a cooling nozzle 1, the water inlet of the cooling nozzle 1 is connected to the water inlet pipe 2, and the water inlet pipe 2 is provided with a pneumatic film valve 3. The air inlet of the cooling nozzle 1 is connected to the compressed air source through the air inlet pipe 4, and the air inlet pipe 4 is provided with an ejection air valve 5, a filter 6, a pressure reducing valve 7 and a pressure gauge 8 in sequence along the air flow direction, and a check valve 9 is also provided on the air inlet pipe 4, and the check valve 9 is located between the pressure gauge 8 and the cooling nozzle 1; a spray cleaning air pipe 10 is provided in parallel on the air inlet pipe 4, the air inlet end of the spray cleaning air pipe 10 is located upstream of the ejection air valve 5, and the air outlet end of the spray cleaning air pipe 10 is located downstream of the check valve 9, and the spray cleaning air pipe 10 is provided with a spray cleaning air valve 11.

[0015] The cleaning air injection valve 11 and the injection air valve 5 are both electromagnetic valves. The pressure of the compressed air source is 6 bar.

[0016] During the cooling process of the airflow drying machine, the cleaning air valve 11 is closed and the induced air valve 5 is opened. At this time, the compressed air source passes through the induced air valve 5, the filter 6, the pressure reducing valve 7, the pressure gauge 8 and the check valve 9 in sequence and then enters the cooling nozzle 1. At the same time, the pneumatic film valve 3 is opened, and the cooling water enters the cooling nozzle 1 through the water inlet pipe 2. Under the induced air, the cooling water is sprayed out from the spray port of the cooling nozzle 1 in the form of mist, so as to cool the process gas in the process pipeline. When the process gas temperature drops to the required temperature, the induced air valve 5 and the pneumatic film valve 3 are closed, and the cooling nozzle 1 stops cooling.

[0017] When the cooling nozzle 1 needs to be cleaned, the cleaning air valve 11 is opened, and the compressed air with a pressure of 6 bar directly enters the cooling nozzle 1 through the cleaning air pipe 10 to remove the dust and debris gathered at the cooling nozzle 1. The setting of the check valve 9 can prevent the high compressed air pressure of the cooling nozzle 1 from reversely entering the original pneumatic components of the equipment when the cooling nozzle 1 is working, thereby protecting the pneumatic components.

[0018] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning cooling nozzle system for airflow tobacco drying machine, the cooling nozzle system comprising a cooling nozzle, the air inlet of the cooling nozzle is connected to a compressed air source through an air inlet pipe, and an ejector valve, a filter, a pressure reducing valve and a pressure gauge are sequentially arranged on the air inlet pipe along the air flow direction, characterized in that: The air inlet pipe is also provided with a check valve, which is located between the pressure gauge and the cooling nozzle; a spray cleaning air pipe is arranged in parallel with the air inlet pipe, the air inlet end of the spray cleaning air pipe is located upstream of the injection air valve, the air outlet end of the spray cleaning air pipe is located downstream of the check valve, and a spray cleaning air valve is provided on the spray cleaning air pipe.

2. A self-cleaning cooling nozzle system for airflow tofu drying machine as claimed in claim 1, characterized in that: The cleaning air injection valve and the injection air valve are both electromagnetic valves.

3. The self-cleaning cooling nozzle system for airflow torrefaction drying machine according to claim 1, characterized in that: The pressure of the compressed air source is 6 bar.

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