The common faults and maintenance of miniature electric self-priming pump

10, cut, condensate of the miniature electric self-priming pump, if the bearing runs inside the circle, it can grind the motor shaft 2 seriously, and adopts Na material cutting 2. The pump head part 1. The motor part often runs but the water output is small Or no water at all. The mMMUdMtbMM+=fffMiMw line and the motor windings are disconnected. Hand Guang fills the water pump with the mouth to hold the mouth hard to start or can not start, and accompanied by the sound of the mouth quiet, = whether the Department of the head leaking water, the Department of the seal is damaged, v; i, turn it is clear Starting capacitor or starting winding damage, between the changing of the water, the loss of suction chamber and f motor can run, but the speed is slow, and the machine is bright and overheated with burning odor (2) The machine seizes the capacitor and shoots another Mu with the ridge jumper temple. Measures rash recovery. The motor and other methods are repaired. Need to pay attention to the competition is because the pump is long, 7 Cambodian (4) operation when the number of vibration is the shaft Liumei ice cut pole resistance postage = improper cooperation with the chassis, need to open the motor inspection, if the shaft damage, power Self-priming application = When adjusting the ring gear adjustment ring gear from the downturn to the pump body spring seat shoulder between the two ears, and then pull out the adjustment gear ring together with the oil control sleeve spring seat and the plunger magazine. When the plunger spring is too hard to move, the narrow ring gear is not easy to pull out, mark on the adjusting ring gear and the control sleeve, loosen the ring gear fastening screw, and insert the word rotation tool into the ring gear and the control sleeve. Between the edges, the ring gear is pulled down from the control sleeve and removed, and then the word rotation tool is inserted between the control sleeve and the pump body, and then the control sleeve together with the spring upper seat is pulled out from the top to the bottom. Plunger spring. If necessary, turn the camshaft so that the tappet is in top dead center, take out the tappet, and place the gasket in the cylinder orderly. The cylinder tappet is placed into the seat hole in the order of the cylinder and the camshaft is rotated so that the tappet is at the bottom dead center. Mark the oil control sleeve spring upper seat and the plunger against the good gear rod and align the gear ring, install the column cold sleeve together with the plunger, align the plunger sleeve positioning groove with the positioning pin of the pump body, and the plunger is marked with the lateral direction. Outer and aligned with the control sleeve gap, into the outlet valve seal gasket outlet valve spring and the volume reduction body, and then loaded with people, the shape of the rubber seal 出 s oil valve tight seat and 49.058.8 heart 1 torque Tighten.

Only use the screwdriver or double-jaw special tool to pry the plunger spring, and use the tweezers only to push the lower seat of the spring and place the lower seat slot on the plunger rod to ensure that the tail rod is inserted properly. Spring under the slot. In order to allow the spring lower seat slot to fit smoothly on the plunger stem, the plunger stem must be placed on a suitable suspended height first before pushing the seat under the spring. Since there is little room for change in the degree, it is not like a pump equipped with a bolt-type tappet, as long as the plunger rod is pushed against the bearing surface of the adjustment bolt. In addition, the space for changing the lower seat of the spring between the plunger spring and the tappet is also small. This is the assembly of the 0 pump and the coupling spring assembly, placed on the tappet, with the pump body part in contact with the ring gear as the fulcrum, with the word screwdriver first downward and backward to the pump body spring seat shoulder between ears Press the person, then press the oil control sleeve side and put it into the ring gear, then make the oil control sleeve into the ring gear mark and tighten the ring gear fastening screw. , For the ring gear together with the oil control sleeve is easy to remove at the same time, the ring gear together with the pull sleeve to discuss the assembly at the same time to install the ring gear together with the oil smash screw sleeve spring seat plunger spring, put on the tappet 1 With the pump body that is in contact with the ring gear as the fulcrum, the place where the screwdriver is used to move backwards and backwards to the pump is slightly more difficult than the pump. If we can carefully understand the operation, we will be skilled in assembly several times. To install the cylinder spring under seat, all need to turn the camshaft while hand-moving to adjust the gear rod or shift the gear ring by hand, and the gear rod should move flexibly without blockage. , Otherwise, should, find the cause and 8 new assembly must not use the method to reduce the torque of the oil valve tight seat to solve the gear rod assembly speed governor, pay attention to the starting spring do not stretch, connecting rod and rack lock spring The pieces should be locked firmly, and the fixing bolts should be tightened evenly between the two ears on the shoulders of the spring in order to prevent leakage of the lubricating oil.

Editor Zhang Shenghu

Others Home appliance

Noise standards for six categories of small Home appliances will be officially released soon

Recently, the mandatory national standard GB19606-2004 noise limits for household and similar electrical appliances, which was officially implemented on August 1, has added a new "d", including air purifiers, dishwashers, vacuum cleaners and water absorbing cleaning appliances, electric kitchen appliances, food shredders The special requirements for noise limits of six types of small household appliances, humidifiers, are currently in the stage of online publicity of WTO / TBT and will be officially released soon.

The draft for approval of the special requirements for noise limits of these 6 types of products stipulates that all technical contents of the standard are mandatory. The specific noise value must be marked on the nameplate or operation manual of category 6 products, and the deviation between the measured value and the indicated value shall not exceed 3 dB (a), and the maximum shall not exceed the standard limit value. Li Yi, director of the national household appliance Standardization Technical Committee, said that enterprises should pay more attention to this series of standards. As a national mandatory standard, once formally implemented, enterprises and businesses involved in these six types of products should act in strict accordance with the laws and regulations and express the noise value of products in time.

The draft of special requirements for humidifiers with noise limits for household and similar electrical appliances for approval stipulates that "the sound power level noise of humidifiers shall meet the regulations." the special requirements for food blenders with noise limits for household and similar electrical appliances are applicable to food blenders with rated voltage of 220V and rated power of no more than 700W, For household and similar purposes, the motor drives the blade in the container to rotate at high speed to stir or crush food. Appliances with a rated power of more than 700W are under consideration. The noise limit requirements include the noise value requirements of immersion food crusher and solid food crusher. It is specified that the noise limit of immersion food grinder is: the noise value of appliances with power ≤ 400W shall not exceed 90dB (a), and the noise value of appliances with power ≤ 400W shall not exceed 90dB (a); The noise limit of solid food crusher is: the noise of appliances with power ≤ 400W shall not exceed 100dB (a), and the noise of appliances with power ≤ 400W shall not exceed 105dB (a).

The special requirements for noise limits of household and similar electrical appliances and electric kitchen appliances are also applicable to appliances with motor rated input power not greater than 700W, and the requirements for appliances with power above 700W are also under consideration. According to Li Yi, this standard is applicable to electric kitchen appliances other than food shredders, such as soybean milk machine, juicer, etc. The standard specifies specific noise limits.

The noise limits of household and similar electrical appliances, special requirements for vacuum cleaners and water absorbing cleaning appliances, are only applicable to vacuum cleaners and water absorbing cleaning appliances (including their accessories and components) used in families and similar occasions. The requirements for product noise limit are: if the rated input power of vacuum cleaner is ≤ 1000W, the noise limit shall be ≤ 84dB (a); For rated input power ＞ 1000W and ≤ 1400W, the noise limit is ≤ 86db (a); For rated input power ＞ 1400W, the noise limit is ≤ 90dB (a). The noise value of water absorbing cleaning appliance shall not be greater than 90dB (a).

The noise limits of products are also specified in the special requirements for dishwashers and the special requirements for air purifiers. Among them, the sound power level noise of the Air Purifier shall comply with the provisions in Table 3. The noise limit value of the sound power level of the standing dishwasher shall not be greater than 61db (a), the desktop dishwasher shall not be greater than 65dB (a), and the embedded dishwasher shall not be greater than 58db (a).

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