6results about How to "Reduce vibration noise" patented technology

The utility model provides a medical oxygen generator's noise reduction device, the medical oxygen generator's noise reduction device includes Y-type air inlet pipe, Y-type air inlet pipe includes straight pipe portion and Y-type pipe portion, straight pipe portion one end is connected with the second slip pipe of Y-type pipe portion, straight pipe portion one end is equipped with the first slip pipe that connects with the Y-type pipe portion, the first slip pipe is equipped with the second slip pipe, the second slip pipe is equipped with the second slip pipe, and the second slip pipe is equipped with the second slip pipe. The second sliding pipe is sleeved with the first sliding pipe in a sliding mode, a buffering corrugated pipe part is integrally formed on the first clamping ring, and the other end of the buffering corrugated pipe part is connected with the second clamping ring on the straight pipe part. When airflow enters and gathers along the two pipe ends of the Y-shaped pipe part, the second sliding pipe and the first sliding pipe can slide when the airflow gathers and impacts, and the buffering corrugated pipe part can play a role in damping and buffering, so that vibration noise generated by airflow gathering is reduced, and the service life of the air conditioner is prolonged. A plurality of lubricating oil storage annular grooves used for being filled with solid lubricating oil are formed in the inner wall of the first sliding pipe, so that sliding between the first sliding pipe and the second sliding pipe is smoother, and noise generated by sliding is avoided.

The utility model relates to the technical field of battery recycling and disassembling, and discloses a portable lead-acid battery disassembling device which comprises a disassembling box, the bottom of the inner side of the disassembling box is fixedly connected with a turnover liquid discharging mechanism, the inner side of the disassembling box is fixedly connected with a pole piece disassembling mechanism, the turnover liquid discharging mechanism comprises a stand column, and the stand column is fixedly connected with the pole piece disassembling mechanism. The bottoms of the stand columns are fixedly connected to the bottom of the inner side of the dismounting box, a fixing shaft is fixedly connected to the close sides of the two stand columns, rotating blocks are rotationally connected to the outer sides of the fixing shafts of the stand columns, and a dismounting table is rotationally connected to the outer sides of the fixing shafts of the stand columns. According to the utility model, the L-shaped sliding block is pushed to slide on the sliding rail through the overturning driving cylinder, the rotating block is driven to rotate around the upright post fixing shaft, and then the dismounting table is overturned, so that the battery liquid automatically flows into the battery liquid pool to be collected, the battery liquid is efficiently discharged, the dangerous liquid can be prevented from being manually contacted, and the potential safety hazard caused by misoperation is prevented.

The utility model discloses a sectional type rotor punching sheet mounting structure, which relates to the field of motor manufacturing and comprises a punching sheet assembly. An outer key groove is formed in the position, corresponding to the inner key groove of the punching sheet assembly, of the outer ring of the connecting piece, a flat key is installed between the outer key groove and the inner key groove, the inner ring of the connecting piece is connected with the rotating shaft through a key, and torque transmission is achieved; the magnetic steel pressing plates are of a sector-ring-shaped structure, the multiple magnetic steel pressing plates are arranged in an end-to-end aligned mode to form a circular ring structure and cover the surfaces of rotor punching sheets at the top and the bottom of the punching sheet assembly, and a second through hole is formed in the position, corresponding to the first through hole, of each magnetic steel pressing plate, so that the second through hole is aligned with the first through hole, and a screw penetrates into the second through hole; and the magnetic steel pressing plate and the rotor punching sheet are locked. According to the utility model, rotor punching sheet installation difficulty is reduced, rotor punching sheet die manufacturing difficulty and processing cost are reduced, and rotor punching sheet material utilization rate is improved; the material cost and the maintenance cost are reduced, the punching quality inspection difficulty is reduced, and the motor efficiency is improved.

The utility model discloses a laboratory ventilation device of waste gas treatment structure, including installation base plate and the exhaust fan of installation base plate lower end dismounting setting, the lower end of exhaust fan is connected with filter cover, and through fan installation ring -shaped cylinder, installation positioning lock groove, thread positioning lock rod etc. Cooperation of structure makes exhaust fan and can be independently disassembled. The installation positioning block and sliding positioning groove form the guidance, and there is no deviation jamming in dismounting, and the locking nut and locking bolt double -fixed, ensure stable and convenient quick dismounting, can regularly clean exhaust fan blade dust. The utility model discloses the filter cover inside adopts three -level composite filter structure. Waste gas impurity filter screen board intercepts solid particle first, and activated carbon adsorption filter board adsorbs organic pollutant, and two -in -one chemical filter layer handles acidic gas and organic solvent pertinently, compares traditional single straight -line exhaust mode, realizes to the full -flow purification of laboratory complex waste gas, and the discharge meets relevant environmental protection standard.

The utility model relates to fireproof roller shutter door technical field discloses a kind of self-cleaning noise reduction mechanism of fireproof roller shutter door guide rail, including the limiting noise reduction piece being installed on the inner wall of fireproof roller shutter door guide rail notch and the cleaning piece for the self-cleaning of limiting noise reduction piece, limiting noise reduction piece and roller shutter side end contact, cleaning piece and limiting noise reduction piece contact. By setting the limiting noise reduction piece of roller shutter side end contact, the running track of roller shutter can be limited, and the friction noise between roller shutter and guide rail is reduced, by setting the contact of cleaning piece and limiting noise reduction piece, dust and sundries on the surface of limiting noise reduction piece can be automatically removed, to avoid pollutants affecting its performance, realize the self-cleaning and noise reduction double function of fireproof roller shutter door guide rail, improve the running stability and service life of roller shutter door.

The utility model relates to the field of heaters, in particular to a low-noise heater which comprises a main machine shell, a wind wheel assembly, a PTC heating plate and an outer cover hook, the outer cover hook comprises a hanging rod and an outer rubber pad, one end of the hanging rod is arranged on the main machine shell, the outer rubber pad is located in the hanging rod and arranged on a keel in a sliding and sleeved mode, and the outer cover hook is arranged on the outer cover hook. The outer end of the hanging rod is hung on the keel, the wind wheel assembly is arranged in an air channel in the main machine shell, a built-in rubber pad is arranged at the bottom of the wind wheel assembly, the PTC heating plate is arranged at an air outlet of the air channel, and a sound absorption cotton block is fixedly bonded to the inner wall of the air channel. And the noise during the operation of the warmer is effectively reduced.