A convenient oil filter device for maintenance
A technology of oil filtering device and filter element, which is applied in the direction of fluid pressure actuating device, fluid pressure actuating system components, mechanical equipment, etc., which can solve the problems of large workload and waste of hydraulic oil, and achieve cost saving and good oil filtering effect , the effect of convenient operation
Active Publication Date: 2016-01-20
CHINA GEZHOUBA GRP THREE GORGES CONSTR ENG CO LTD
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Problems solved by technology
When checking and replacing any oil return filter element, the hydraulic oil in the oil tank will flow out through the filter element and another parallel oil return line, resulting in waste of hydraulic oil
For example: using the method of draining the hydraulic oil in the oil tank and then checking and replacing the filter element will cause a large workload
Method used
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Embodiment Construction
[0020] Such as Figure 1~Figure 3 As shown, a kind of oil filtering device that is easy to overhaul includes a filter element 7 and a movable stop valve spool 8. The upper part of the filter element 7 is provided with a fixed stop valve seat 9 and a fixed stop valve spool 11. The upper part of the filter element 7 is fixed on the top. Stop valve valve seat 9, filter core 7 bottoms top tight movable stop valve spool 8. The outside of the filter element 7 is provided with a first housing 3 , the outer surface of the first housing 3 is provided with an oil inlet pipe 5 , and the top of the first housing 3 is provided with an upper sealing flange. The bottom of the first housing 3 is provided with a connecting flange body, the lower part of the connecting flange body is provided with a second housing 4, and the outside of the second housing 4 is provided with an oil return pipe 6, and the second housing 4 The bottom is provided with a lower closed flange body. The lower closed f...
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Disclosed is an oil filter convenient to overhaul. The oil filter comprises a filter element and a movable stop valve element. The upper portion of the filter element is provided with a fixed stop valve base and a fixed stop valve element. The upper portion of the filter element tightly abuts against the fixed stop valve base, the lower portion of the filter element tightly abuts against the movable stop valve element, a first shell is arranged outside the filter element, an oil inlet pipe is arranged on the outer side face of the first shell, the top of the first shell is provided with an upper closed flange body, the bottom of the first shell is provided with a connecting flange body, the lower portion of the connecting flange body is provided with a second shell, an oil return pipe is arranged outside the second shell, the bottom of the second shell is provided with a lower closed flange body, a guide column is arranged on the lower closed flange body, the guide column is sleeved with a reset spring, and the middle of the movable stop valve element is embedded into the guide column and the reset spring. According to the oil filter convenient to overhaul, hydraulic oil ways at the two ends of the oil filter can be broken when the oil filter is overhauled, the cost can be saved, arrangement and operation are convenient, and reliability is high.
Description
technical field [0001] The invention relates to an oil filtering device, in particular to an oil filtering device which is convenient for maintenance. Background technique [0002] In order to ensure the cleanliness of the hydraulic oil, the main oil return circuit of the hydraulic system of the construction equipment is usually equipped with an oil filter device. Due to the structural requirements of some equipment, the main return oil circuit returns to the oil tank through two parallel oil pipes. When checking and replacing any oil return filter element, the hydraulic oil in the oil tank will flow out through the filter element and another parallel oil return line, resulting in waste of hydraulic oil. For example, if the hydraulic oil in the oil tank is drained and then the method of checking and replacing the filter element is used, a large workload will be generated. Contents of the invention [0003] The technical problem to be solved by the present invention is to...
Claims
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IPC IPC(8): F15B21/04
Inventor 孔繁雄张建山张耀华余小宝乐运红周平吕俊刘青萍王松汪文亮蒋正韦
Owner CHINA GEZHOUBA GRP THREE GORGES CONSTR ENG CO LTD