11results about How to "Reduce sealing pressure" patented technology

The invention discloses a water valve sealing gasket structure capable of achieving 360-degree sealing through lap joint, and relates to the technical field of water valve sealing, the water valve sealing gasket structure comprises a sealing gasket body, the sealing gasket body can be wound into an end-to-end connected cylindrical structure from an unfolded and tiled state, and a lap joint head and a sealing limiting head are arranged at the two free ends of the end-to-end connected position of the sealing gasket body correspondingly; a plurality of flow holes are formed in the sealing gasket body; when the sealing gasket bodies are in lap joint and matched end to end, the inner side flow limiting area, the transverse sealing area and the outer side flow limiting area are formed between the opposite faces of the sealing gasket bodies, and a small gap between the inner side flow limiting area and the outer side flow limiting area plays a flow limiting role, so that the sealing pressure of the transverse sealing area is reduced; the transverse sealing area can also achieve a good sealing effect under the interference fit of extrusion force; therefore, a 360-degree structure is achieved, the upper limit of the number of the flow holes is improved, and meanwhile the problems that the structure is complex and the cost is increased due to the series-parallel connection mode of the valve set and the use of a check block are solved.

The breathing pipeline connector is used for being detachably connected with an air conveying pipeline and comprises a connector body and an elastic component arranged on the connector body in a sleeving mode, and the connector body and the elastic component are matched to form an airflow channel for fluid circulation; the connector body comprises a pipe body and two first cantilever structures arranged along the pipe body in an aligned mode, each first cantilever structure is provided with a pressing part and a clamping part, the air conveying pipeline is provided with a matching part matched with the clamping part, the breathing pipeline connector is connected with the air conveying pipeline through clamping matching of the clamping parts and the matching parts, and the pressing parts are connected with the pipe body. The pressing part can deflect relative to the pipe body under the action of external force so as to drive the clamping part and the matching part to be unlocked. Due to the fact that the two first cantilever structures are arranged along the pipe body in the aligned mode, a double-finger pressing area conforming to ergonomics is formed, pressing on the pressing part can be achieved through natural kneading of the thumb and the index finger, and therefore the pressing part is driven by one hand to move so as to achieve unlocking of the connector and the gas conveying pipeline.

The utility model discloses a high sealing electronic water pump, including motor shell, shield cover, water pump shell, motor end cover, rotor subassembly and stator subassembly, the connecting end surface of motor shell and water pump shell is equipped with U type sealing washer, the back of U type sealing washer and water pump shell end surface are opposite, the shield cover has the locating end surface of cooperation installation with the inner ring end surface of U type sealing washer and the bending part of the U type groove of the stretch into U type sealing washer, and the bending part has the locating side of the inner side of U type groove and the fixed end surface of the inner bottom of U type groove, and the outer ring of U type sealing washer is radially compressed between motor shell and water pump shell, the utility model discloses between water pump shell and motor shell adopts U type sealing structure, and the opening of U type sealing washer is opposite to pump cavity simultaneously, and the comprehensive sealing of radial and axial is realized by the bending design of shield cover front cover and the compression of motor shell and water pump shell, guarantees the liquid in pump cavity not to leak, and is convenient to install.

The utility model relates to a short-range evaporator and a beta-aminopropionitrile refining system applying the short-range evaporator. The short-range evaporator comprises a lower barrel, an inclined groove is formed in the inner wall of the lower barrel, a flow guide sleeve is arranged in the inclined groove and is in a circular tube shape with an axial opening, the lower end of the flow guide sleeve abuts against the groove bottom of the inclined groove, and the upper end of the flow guide sleeve extends into the upper barrel and is attached to the inner wall of the upper barrel; and the axial opening of the flow guide sleeve is over against the propionitrile residue outlet. The system further comprises a pipeline system, a propionitrile residue buffer tank, a propionitrile positive fraction buffer tank and a non-condensable gas condenser; the lower cylinder body is provided with a positive fraction outlet and a vacuum interface; the propionitrile residue outlet is communicated with a propionitrile residue buffer tank through a propionitrile residue discharge pipe; the positive fraction outlet is communicated with a propionitrile positive fraction buffer tank through a propionitrile positive fraction discharge pipe; the vacuum interface is communicated with the non-condensable gas condenser through an evaporator gas phase discharge pipe; and the condensed propionitrile collecting pipe is communicated with the non-condensable gas condenser and the propionitrile positive fraction buffer tank. The short-range evaporator is applied to a beta-aminopropionitrile refining system, so that the system structure is simplified.

The drawing compression type damping shock absorber comprises a shock absorption shell, and at least one sealed air storage cavity is formed in the shock absorption shell; each damping piston is arranged in the corresponding air storage cavity, and an inflation damping cavity is formed in the corresponding air storage cavity through the corresponding damping piston; one end of the damping connecting rod is connected with the damping piston, and the other end of the damping connecting rod penetrates through the damping shell and is connected with a first connecting bracket; when the top space of the damping piston forms an inflatable damping cavity, the damper is a pulling type damper, and when the bottom space of the damping piston forms an inflatable damping cavity, the damper is a compression type damper. The double-damping shock absorber can act as a pulling type shock absorber and can also be used as a compression type shock absorber, the purpose of shock absorption can be achieved through compressed air, the shock absorption size is convenient to adjust, use of shock absorption pieces is omitted, and the use range is widened; different variable damping effects can be achieved when the shock absorber is pressed down and retracted.

The invention relates to novel gluing shaft lines, which comprise a gluing shaft main body, transverse lines and longitudinal lines, the gluing shaft main body is provided with the transverse lines and the longitudinal lines which are distributed in a reticulate pattern shape, the transverse lines are spirally arranged around the gluing shaft main body clockwise or anticlockwise, and the longitudinal lines are spirally arranged around the gluing shaft main body clockwise or anticlockwise. The longitudinal lines are arranged along the axial direction of the gluing shaft main body or according to angles; the novel lines can discharge glue with one sealed end to the other end, so that the fixed ends at the two ends of the gluing shaft are more easily sealed, and the sealing pressure of the fixed ends is reduced.

The utility model discloses a novel water medium retarder belongs to heavy load traffic transportation engineering technical field, and this water medium retarder includes transmission shaft, and the transmission shaft outside has the rotor impeller of fixed cover joint and the stator impeller of rotation sleeve joint, the inside of rotor impeller is close to stator impeller and is provided with scroll vane, and the liquid hole of being provided with between scroll vane, and the outside of rotor impeller is provided with curve vane, the inside of stator impeller is close to rotor impeller and is provided with interval vane, and the outside end face of rotor impeller is provided with stator impeller liquid inlet groove, and the liquid inlet groove of stator impeller is provided with liquid inlet, and the outside of stator impeller is provided with mounting groove, and the mounting groove is fixedly installed with the spoiler column subassembly, and the top end face of spoiler column subassembly is set as the curved surface of the flow field inner chamber geometric relation consistent of stator impeller, through the curved surface design of spoiler end face, realizes to the braking flow field no damage, to air flow field then can disturb damage, more realizes the adaptive adjustment of retarder water flow and its brake power matching.

In a negative pressure sealing structure and a negative pressure sealing method, the cavity is at vacuum negative pressure during use and at ambient air pressure during non-use. The sealing body that cooperates with the cavity also changes with the pressure state in the cavity and undergoes corresponding deformation, thereby changing the tightness of the fit between the sealing body and the cavity. When the cavity is in a negative pressure state, the sealing body deforms so that the sealing pressure between the sealing body and the cavity sealing surface increases, and the airtightness is improved; when the cavity is in an ambient air pressure state, the sealing body returns to its initial state, and the sealing pressure between the sealing body and the cavity sealing surface decreases, making it easier for the user to separate the sealing body from the cavity. The vacuum food processor, vacuum fresh-keeping jar, and vacuum press that adopt the negative pressure sealing structure of the present invention improve the user's convenience in putting in and taking out food while ensuring the airtightness in the working state, thereby improving the user experience.

The utility model discloses a pipeline inspection opening sealing structure. The technical problem that an existing pipeline inspection opening is poor in sealing effect is solved. The inspection opening body is communicated with the corresponding position of a pipe fitting, the sealing cover is in threaded connection with the inspection opening body and used for sealing the inspection opening body, the first sealing ring is arranged between the sealing cover and the end face of the inspection opening body, and a plug tongue with the outer edge correspondingly matched with the inner edge of the inspection opening body is arranged in the center of the sealing cover. A second sealing ring is relatively and fixedly arranged on the outer edge of the plug tongue, an annular concave table is arranged on the outer edge of the end of the plug tongue, and an annular boss correspondingly matched with the annular concave table is arranged on the inner edge of the inspection opening body. The sealing structure has the advantages of excellent sealing effect, high sealing reliability and the like.

The invention belongs to the technical field of new energy automobiles, and discloses an electronic water valve and a vehicle. The electronic water valve comprises a valve body, a valve element, an actuator and a first sealing piece, two valve element covers are fixedly connected to the two ends of a valve element body respectively, the valve element is designed in a split mode, and the problem that water flows through circulation channels of the valve element is solved; the circulation channel of the valve element body communicates with the flow channel openings of the valve body, under the driving effect of an actuator, the valve element can rotate relative to the valve body, the flow channel openings in the valve element are selectively communicated in a one-to-one correspondence mode so as to change the flow direction of cooling liquid, and switching of multiple working modes can be achieved only through one electronic water valve. The cost and the manufacturing difficulty of the electronic water valve are reduced, the first sealing piece is arranged between the valve element body and the valve body, the two end faces of the first sealing piece are connected with the outer circumferential face of the valve element body and the inner circumferential face of the valve body in a sealed mode respectively, and a face pressing type sealing mode is adopted, so that abrasion and sealing performance of a traditional rubber sealing piece are optimized; smooth and stable rotation of the valve core is ensured.

The utility model discloses an embedded ejection device for a numerical control electro-hydraulic hammer, which solves the technical problems that the ejection device of the numerical control electro-hydraulic hammer in the prior art is difficult to maintain, the service life of parts is too short, the maintenance is frequent, the daily maintenance workload is larger, and the use cost is higher. The embedded ejection device comprises a die holder with a positioning groove, the cylinder sleeve is in interference fit with the guide sleeve and is arranged in the die holder; the piston rod penetrates through the cylinder sleeve and the guide sleeve; the separated clamping block is installed in the positioning groove and fixed through the positioning ring and the positioning clamping spring. Preferably, a transition block is adopted and is arranged above the separated clamping block; the piston rod is provided with two seals. According to the lower ejection device, rapid assembly and disassembly are achieved through the design of the separated clamping block, the service life of the piston rod is prolonged through the design of the transition block and two sealing modes, the reliability of the lower ejection device of the whole numerical control electro-hydraulic hammer is achieved, and the large-batch production condition of the numerical control electro-hydraulic hammer in the closed forging process is met.