30results about How to "Good oil leakage prevention effect" patented technology

The invention relates to a chain wheel chamber casing of an engine. The upper portion of the chain wheel chamber casing is away from a concave cavity and faces to a first installation surface of a cylinder body and a cylinder cover of the engine, the lower portions on two sides of the chain wheel chamber casing face a second installation surface and a third installation surface of a flywheel casing respectively. A first sealing groove for placing a sealing member is formed in the first installation surface, a second sealing groove is arranged under the first sealing groove, a third sealing groove and a fourth sealing groove are arranged on the second installation surface and third installation surface respectively, and an included angle is formed between the second installation surface and the first installation surface and between the third installation surface and the first installation surface. By means of the technical scheme, sealing members can be well fixed in the sealing grooves, users only need to push a lower side installation surface toward the flywheel casing, installation in one step can be achieved, and many installation procedures are reduced.

The invention relates to an oil leak preventing device for an upwards curved needle mechanism. A columned upwards curved needle guiding body capable of being freely and rotationally inserted and kept on a circular hole formed on an upwards curved needle guiding component is formed with an upper communicating slotted hole and a lower communicating slotted hole orthogonal with a communicating hole for sliding and lifting of an upwards curved needle table, an oil seal ring elastically and glidingly contacting the outer peripheral face of the upwards curved needle table and provided with a labialpart for scraping lubricating oil is inserted in the upper communicating slotted hole, and an oil suction ring capable of sucking and keeping the scraped residual lubricating oil is inserted in the lower communicating slotted hole, therefore, the oil leak preventing device can reliably and favorably exert scraping function of the residual lubricating oil, can reliably prevent the scraped residuallubricating oil from being attached to the outer peripheral face of the upwards curved needle table again to disperse upwards, and can stably maintain the oil link preventing function for a long term.

The invention discloses a ventilation cap. The ventilation cap comprises a ventilation cap body, filter elements and a connecting part. The ventilation cap body is provided with a first vent hole which communicates an inner cavity of a device with the outside atmosphere. The connecting part is provided with a second vent hole which is a stepped hole. The two ends of the second vent hole are communicated with the first vent hole and the inner cavity of the device respectively. The two ends of the connecting part are used for being connected with the ventilation cap body and the device in a sealed mode respectively. The stepped hole is gradually tapered from top to bottom. The filter elements are mounted at the step of the stepped hole. Accordingly, according to the ventilation cap provided by the present invention, by arranging the connecting part provided with the filter elements, liquid in the device is effectively prevented from overflowing through the ventilation cap; thus, the oil leakproof performance of the ventilation cap is improved. The invention further discloses a speed reducer comprising the ventilation cap.

The invention discloses an efficient powerful wire drawing speed reducer which comprises a reduction gearbox body, an input shaft, an intermediate shaft and an output shaft. The input shaft is rotationally supported through a conical roller bearing installed in a bearing installation hole. A bearing end cover of the conical roller bearing is fixedly installed at the bottom of the reduction gearbox body. The efficient powerful wire drawing speed reducer is characterized in that a movable ring is arranged on the upper end face of the conical roller bearing, a first gap seal is formed between the outer circle of the movable ring and the bearing installation hole, the bearing end cover is provided with a lengthened sleeve, six seal combinations and a ball bearing are arranged between an inner hole of the sleeve and the outer circle of the input shaft from top to bottom, the lower shaft end of the input shaft is rotationally supported through the ball bearing, a belt wheel is rotationally arranged on the outer circle of the sleeve through rolling bearings, the bottom of the belt wheel is provided with a transmission disc fixedly connected with the belt wheel, and the transmission disc is in key connection with the lower shaft end of the input shaft. By the adoption of the efficient powerful wire drawing speed reducer, design is optimized, transmission efficiency is high, anti-impact capacity is high, oil leakage and water accumulation are prevented, the vertical size is small, and the input part can bear large radial loads due to the adoption of an unloading mechanism.

The invention provides a magnetic drive pump bearing box structure. The magnetic pump bearing box structure comprises a bearing box body, a first rolling bearing, an outer magnetic rotor, a second rolling bearing, a driving shaft and a driving shaft baffle. The first rolling bearing and the second rolling bearing are fixedly mounted at two ends of the bearing box body; the first rolling bearing and the second rolling bearing sleeve the driving shaft; a first horizontal oil return groove is formed in the bearing box body above the first rolling bearing, and a second horizontal oil return grooveis formed in the bearing box body below the first rolling bearing; a third horizontal oil return groove is formed in the bearing box body above the second rolling bearing, a fourth horizontal oil return groove is formed in the bearing box body below the second rolling bearing, one end of the driving shaft is sleeved with the outer magnetic rotor, an end of the outer magnetic rotor is sleeved withan inner ring of the first rolling bearing, and the outer magnetic rotor is fixedly installed on the driving shaft through a driving shaft baffle by means of a fastening screw. The bearing box structure provided by the invention can meet the requirement of stable driving of a current maximum load magnetic drive pump, an oil return structure is improved, and the oil leakage prevention capacity isgreatly improved.

The invention relates to an integrative cooking utensils of lampblack absorber and cooker, comprising a cabinet body, a plurality of cylindrical sunken stove holes are formed in the panel of the body, a cooker is provided on the soleplate of the stove holes, major arc shaped air suction ports are arranged at the at the top of the wall of the stove holes, a handle hole in one side of the stove holes faces person, a gas suction port is covered in a gas collecting tank. The air inlet of a blower is set in the gas collecting tank. The walls of stove holes are connected with the top plate of gas collecting tank and the soleplate. The blower is connected with an exhaust pipe. The walls of the stove holes are buckled with an annular convex edge on the soleplate. The walls of the stove holes are covered outside the convex edge, improving the fuel-leaking resistance property.