Structure and working principle of the CAM pump

CAM water pump structure, working principle of the CAM water pump

CAM pump rotor blades with protruding from the wheel hub. According to the number of each on the rotor blades, CAM and simple CAM pump and double leaf CAM pump.

figure 19 & ndash; 2 l chart gives a double leaf CAM CAM pump pump structure. It does not contact between two rotor meshing, so want to rely on synchronous gear 7 drive rotation driven rotor, its two stagger the blades of rotor position 90. , as shown in figure 19 & ndash; 22 CAM pump working principle is shown in.

when two rotor turns, in the direction shown by the CAM pumps shown by the rotor blades, wheel hub and the outer circle circle groove is formed between the cylindrical cavity 1 & rsquo; 、2’ Volume is increasing, they again and pump suction chamber are interlinked, the two cavity in the liquid state. And groove cavity connected with pump discharge chamber has 2 and 1 volume was decreased gradually, are in a state of drainage. When transferred to above the middle groove chamber 1 & rsquo; Has been closed, it is in the discharge chamber moving on the way, at this time slot cavity 2 and 1. Part of the suction fluid, groove cavity 2 & rsquo; And 1. Part of the drainage. Continue to spin, respectively by 1, 2 & rsquo; 。 Cavity and 1, 2 & rsquo; 。 Cavity to suck, drainage, the rotor continuous rotation, four working groove cavity pump suction, the drainage process is continuously carried out. Its difference is simple CAM pump there is a vane on each of the rotor, so the whole pump is only two suck and drainage groove cavity in turn, as shown in figure 19 & ndash; Simple CAM pump working principle as shown in figure 23.

visible from the above work, the simple CAM pump in a working cycle, namely each rotor turn a turn, the entire pump drainage, twice as duplex single-acting reciprocating pump work. While the futaba CAM pump such as two-cylinder double-acting reciprocating pump, the water pump there're a total of four times in one work cycle drainage, the flow uniformity is better than simple CAM pump.

figure 19 & ndash; 22 the futaba CAM pump working principle diagram can be seen as figure 19 - B - 21 Section B. By the figure can be seen, the rotor 3 yuan yuan outside the surface of the cylindrical coordinate is always in the 4 wall, part of A cylinder is also A section of the matching of the rotor and the pump body surface, it plays an isolation low pressure pump suction cavity and the effect of high pressure discharge chamber. Despite A place exists dynamic seal clearance, it is A certain length of sealing surface, able to withstand the differential pressure is large enough. Between the rotor and no direct contact with the mesh like gear oil pump, all have relative motion in the pump flow components have a gap between both to improve the life of the pump, and allow the pump liquid contains no wear small solid particles.

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