Marine serial-wash filter

[0009] As shown in the figure, a string washing filter 1 and a filter paper filter 2 are respectively placed on the heating bottom plate 5;

[0010] The string washer is a tank structure, the upper part is equipped with a string washer upper cover 1.2, and the string washer is equipped with a pressure difference indicator 1.3 on the upper cover of the string washer. The upper part of the string washer is equipped with a motor 1.4 and a rotating shaft 1.5 connected to the motor. Interspersed in the middle of the filter element 1.1.

[0011] The filter paper filter has a tank-shaped structure, with a filter paper filter upper cover 2.1 on the upper part, and a filter paper filter pressure difference indicator 2.2 on the filter paper filter. The filter paper filter is equipped with filter paper.

[0012] A pressure difference automatic switching control valve 3 and a temperature automatic switching control valve 4 are installed between the string washing filter and the filter paper filter.

[0013] The motor drives the filter element to rotate through the rotating shaft to remove dirt.

[0014] The working process of the present invention:

[0015] When the pipeline is washed in series, the string washing medium is first washed by the string washing filter. The motor drives the filter element to rotate. The dirt in the string washing medium is filtered out by the filter element. When the dirt increases and the pressure difference exceeds the required range, the pressure difference display Alarm, start the slag discharge function, and record the slag discharge time at the same time. When there is no pressure difference in the set time zone, the pressure difference automatic switching control valve will be switched to the filter paper filter side for series washing.

[0016] When the series washing for a certain period of time, when the dirt increases and the pressure difference exceeds the required range, the pressure difference display will alarm, and the pressure difference automatic switching control valve will be switched to the side of the series filter for series washing. After the filter paper is replaced, it will be manually switched back to the filter paper filter. Perform string washing and repeat this process until it meets the pipeline cleaning requirements.

[0017] When the pipeline is washed in winter, the temperature indicator will display the temperature of the serial washing medium in the pipeline at that time. When the medium in the pipeline cannot meet the temperature requirement, the heating base will heat the serial washing medium in the filter. When heated to the set temperature, it will automatically keep warm. When the heating still cannot reach the temperature, the temperature automatic switching control valve will automatically open, and the string washing medium that has been heated to the highest temperature in the non-working filter is introduced into the working filter to make it work The temperature of the string washing medium in the filter rises rapidly.

[0018] The string washing filter is a self-cleaning filter with an electric rotating head, which can automatically backwash, automatically discharge slag, and automatically heat. The filter paper filter is a filter with a filter paper clamped filter barrel. The filter paper can be replaced and can be automatically heated. .

[0019] In the initial stage of pipe oil string washing, the filter can be switched to the string washing filter position. As the working time of the filter increases, more and more impurities retained on the filter element produce an increasing pressure difference between the filter inlet and outlet. When the pressure difference reaches a certain value, the trigger sends out a signal to trigger the electrical system to start a cleaning cycle. When a cleaning cycle is over, the pressure difference display counter records the cleaning time and times. When there is no significant pressure difference for ten consecutive hours for automatic cleaning, the string filter will automatically switch to the side of the filter element of the filter paper filter to continue cleaning. When the pressure difference reaches a certain value, the trigger alarm prompts to replace the filter paper, and automatically switch the filter to the string washing state, and continue the string washing. After the filter paper is replaced, manually switch back to the filter paper filter element side, and repeat until the string is washed for four hours. There are no visible hard particles and dirt.