Timer with adjustable flow

Abstract

The invention relates to a timer with adjustable flow, and the timer comprises a regulation handle and a trigger 21e, wherein, the regulation handle has a shift 21g for adjusting flow; the timer comprises a shift elastic arm 21f for assisting in flow adjusting; a main control valve soft core is connected by an arched beat 21c with logarithm curve having the characteristics that each pressure angle is the same, thereby making the action accurate; a protruding pyramid valve cone is adapted to a bell mouth of a valve port 22a containing a logarithm curve having the characteristics that each pressure angle is the same; a valve overflow orifice 21a has a long arc shape containing the logarithm curve having the characteristics that each pressure angle is the same; a profile envelope of a filter screen is the logarithm curve having the characteristics that each pressure angle is the same; the main control valve soft core is made of EPDM and is processed at the temperature of 70 Deg C for 22 hours after molding; the trigger 21e has a roller, so that sliding is changed to rolling, thereby solving the big problem of occasional error.

Description

technical field [0001] The invention relates to a control method of water flow for environmental protection and landscaping, which is an adjustable flow timer, a high-performance anti-fouling swing sprinkler and an electromagnetic flow with a new type of energy-saving impeller suspension shaftless support for energy-saving agriculture and forestry irrigation Taking into account the water-saving method including adjustable flow drippers, 360-degree nozzles, fine-tunable thread ring size and thread pitch joints, swinging sprinklers with adjustable spraying angles, and humidity-sensing smart waterers. Background technique [0002] The desire to pursue environmental protection and landscaping is endless; there are also many patents on the control method of watering water flow, and the timing switch of garden sprinklers controlled by both sides of the long axis, such as patent US7252113B2, and Patent ZL200820120164.8 all adopts the timing switch of the garden sprinkler controlled...

AI Technical Summary

Problems solved by technology

Existing products vary, and none of them are perfect; there is a certain nozzle (55ac), such as Figure 31 As shown, the water is connected to the nozzle seat (55c) of the certain nozzle (55ac) through the matching components and then sprayed out through the only small square hole provided on the nozzle cap as the water nozzle (55a3c). Its disadvantage is that the range of sprayed water is narrow, and it cannot have a 360-degree all-round irrigation effect.

Another nozzle (55ad) for existing products, such as Figure 32 As shown, the water is connected to the nozzle seat (55c) of the certain nozzle (55ad) through the matching components, and is sprayed out through the large through hole opened on the half side of the nozzle cap as the water nozzle (55a3d) , its shortcoming is that the range of sprayed water is only half, and cannot have a 360-degree all-round irrigation effect

The existing electromagnetic flowmeter is made based on Faraday's principle of electromagnetic induction. When the conductor cuts the magnetic force line in the magnetic field, an induced potential proportional to the liquid flow rate is generated, and is detected by the electrode in contact with the liquid, so that it is converted by the cable. After intelligent processing, communication and control between the flow data and the computer are realized. The existing electromagnetic flowmeter includes a measuring tube, an inlet flange, an outlet flange, electrodes, an excitation coil, a measuring tube housing, a circuit board and a display. The device, in which the measuring tube, inlet flange, outlet flange and measuring tube housing are all made of metal materials, the disadvantages of using metal materials are: the weight of the entire flowmeter is relatively large, it is inconvenient to install and maintain, and usually requires multiple people Coordinated completion affects work efficiency; and the cost of metal materials is high, making the price of the finished flowmeter more expensive; how to prevent the sprinkler from dirt is also a long-standing problem. The new fine irrigation technology requires a swinging sprinkler with an adjustable spraying angle and an adjustable flow rate. type timer

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