Backflow filter on tank and method for filtering fluid thereof
A filter and fluid technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, servo meter circuit, etc., can solve the problems of uneconomical backflow filter, inconvenient installation and disassembly, complex structure, etc., to achieve Ingenious structural design, prevention of secondary pollution, and concise structure
Active Publication Date: 2018-08-31
SHANGHAI LANGJING FLUID TECH
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Problems solved by technology
[0010] The purpose of the present invention is to provide a backflow filter on the tank to solve the problems that the existing backflow filter is not economical, has a complex structure, and is inconvenient to install and disassemble
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Embodiment Construction
[0046] The backflow filter on the tank and the method for filtering fluid of the present invention will be further described in detail below in conjunction with specific drawings.
[0047] Such as Figure 4 As shown, it is a backflow filter on the tank of the present invention, including a filter cover 8, a filter head 9 and a filter cartridge 10, the filter head 9 is located between the filter cover 8 and the filter cartridge 10, and the filter cartridge The inner wall of 10 is provided with frameless filter element 11, and the upper end of described frameless filter element 11 is provided with a support frame 12, and described support frame 12 is provided with several bypass valves 13 (the number of bypass valves 13 is preferably 6), The center of the frameless filter core 11 is provided with a magnetic rod 14, the bottom of the magnetic rod 14 extends to the middle and lower part of the frameless filter core 11, wherein, the upper end of the filter cartridge 10 is provided ...
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The invention relates to an on-box reflux filter. The on-box reflux filter comprises a filter cover, a filter head and a filter cylinder, wherein the filter head is between the filter cover and the filter cylinder; a skeletonless filter element is arranged on the inner wall of the filter cylinder; a flaring structure is arranged at the upper end of the filter cylinder; an annular flange is arranged in the lower end of the filter head; the annular flange is matched with the flaring structure; an annular groove is further formed in the inner wall of the filter head; and a steel wire check ring is arranged in the annular groove. When the on-box reflux filter is utilized, a fluid enters the filter head from an opening of the filter head and flows downwards along a large through hole to enter an inner cavity of the skeletonless filter element, a magnetic rod adsorbs metal particles, and then, the fluid enters the inner cavity of the skeletonless filter element, is filtered by the skeletonless filter element, finally passes through small holes in the filter cylinder, and enters a container. The on-box reflux filter has the beneficial effects that the filter is economic and environmentally-friendly, and production cost and assembly cost can be greatly reduced.
Description
technical field [0001] The invention belongs to the filter field, and in particular relates to a backflow filter on a tank and a method for filtering fluid thereof. Background technique [0002] In hydraulic equipment and hydraulic systems, the cleanliness of the oil has an important impact on the reliability and life of the hydraulic equipment. Therefore, it is very important for the hydraulic system to keep the oil clean and improve the oil pollution. At present, in the process of fluid transmission or transmission, a return filter is often installed to filter out pollutants in the fluid and keep the fluid flowing back into the container clean. [0003] There are two main types of existing backflow filters, as figure 1 and figure 2 shown. The solid arrows in the figure represent the unfiltered oil, and the hollow arrows represent the oil filtered by the filter element; the large arrows in the figure represent the flow path of the oil when it is normally filtered by th...
Claims
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IPC IPC(8): F15B21/04
CPCF15B21/041F15B2211/615
Inventor 李建忠
Owner SHANGHAI LANGJING FLUID TECH