Pump body assembly, fluid machine and heat exchange equipment
A component and pump body technology, which is applied in the direction of mechanical equipment, pump components, liquid fuel engines, etc., can solve the problems of easy eccentric rotation of the piston sleeve and affect the working efficiency of the pump body components, etc., and achieve the goal of improving operation reliability and performance Effect
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Embodiment 1
[0071] Such as Figure 1 to Figure 3 As shown, the pump body assembly includes a lower flange 12, a lower wear reducing ring 60, a cylinder 20 and a piston assembly. Wherein, the lower wear reducing ring 60 is located in the cylinder 20 , and the lower flange 12 is located below the cylinder 20 . The piston assembly is arranged in the cylinder 20. The piston assembly includes a piston sleeve 40 and a piston 50 slidably arranged in the piston sleeve 40. The lower end surface of the piston sleeve 40 and the lower wear-reducing ring 60 are limitedly fitted to prevent the piston sleeve 40 from facing each other. Displacement in the radial direction occurs at the lower flange 12 .
[0072] Applying the technical solution of this embodiment, during the operation of the pump body assembly, the lower anti-friction ring 60 acts as a limit stop on the lower end of the piston sleeve 40, thereby preventing the piston sleeve 40 from moving in the radial direction during operation. Ensuri...
Embodiment 2
[0081] The difference between the pump body assembly in the second embodiment and the first embodiment is that the structure of the lower wear-reducing ring 60 is different.
[0082] Such as Figure 4 to Figure 8 As shown, the surface of the piston sleeve 40 facing the lower wear-reducing ring 60 has a limiting protrusion 43, and the surface of the lower wear-reducing ring 60 facing the piston sleeve 40 has a seventh limiting groove 61, and the limiting protrusion 43 extends into The seventh limiting groove 61 is in and stops with the seventh limiting groove 61 . Specifically, during the operation of the pump body assembly, the stop protrusion 43 of the piston sleeve 40 extends into the seventh stop groove 61 of the lower wear-reducing ring 60, and the surface of the stop protrusion 43 and the seventh stop The limit stopper of the groove wall of the groove 61 is used to realize the limit and support of the lower wear-reducing ring 60 to the radial direction of the piston slee...
Embodiment 3
[0085] The difference between the pump body assembly in the third embodiment and the first embodiment is that the structure of the lower wear-reducing ring 60 is different.
[0086] Such as Figure 9 to Figure 12 As shown, the surface of the lower antifriction ring 60 facing the piston sleeve 40 has a fifth extension portion 62 , the fifth extension portion 62 protrudes into the piston sleeve 40 and makes a limit stop with the inner surface of the piston sleeve 40 . Specifically, the fifth extension portion 62 extends into the lower end of the piston sleeve 40 and cooperates with the inner surface of the piston sleeve 40 so as to realize the radial limit of the piston sleeve 40 by the lower wear-reducing ring 60 and prevent the piston sleeve 40 from moving in the radial direction. Shift in the direction to realize the limit and support of the upper end of the piston sleeve 40 by the lower wear-reducing ring 60, prevent the piston sleeve 40 from eccentric and tilted rotation, e...
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