A highly efficient and compact plunger pump plunger device

Abstract

The invention discloses an efficient and compact plunger pump plunger device, which comprises a plunger pump cylinder body, an inner pump body, an overflow valve plate, an elastic bag, an overflow valve plate spring, an overflow valve plate spring seat, a pressure relief Valve plate, pressure relief valve plate spring and screws, the inner pump body is located in the plunger pump cylinder and connected by screws, the elastic bag is located inside the inner pump body, the overflow valve plate is located on the top of the elastic bag, and the bottom of the inner pump body It is connected with the overflow valve plate spring seat, the overflow valve plate spring seat is located in the plunger pump cylinder and at the bottom of the elastic bag, the overflow valve plate spring is sleeved on the outer surface of the elastic bag, and the bottom of the pressure relief valve plate Connected to the plunger pump cylinder through the pressure relief valve plate spring.

Description

technical field [0001] The invention belongs to the technical field of plunger pump production and manufacturing, and in particular relates to an efficient and compact plunger pump plunger device. Background technique [0002] Piston pumps are widely used because of their simple structure, high efficiency, and flat efficiency characteristics in various flow ranges, especially in high-pressure pumps. However, since the plunger pump relies on the throttling of the plunger cylindrical surface to achieve high and low pressure isolation, in order to reduce the internal leakage loss, it is necessary to reduce the annular gap as much as possible and increase the length of the plunger, which not only increases the volume of the plunger, but also increases the difficulty of manufacturing. The manufacturing cost is increased, and the bulky structure also makes it more difficult to enlarge the plunger pump. The small plunger gap leads to high requirements for the cleanliness of the wor...

AI Technical Summary

Problems solved by technology

However, since the plunger pump relies on the throttling of the plunger cylindrical surface to achieve high and low pressure isolation, in order to reduce the internal leakage loss, it is necessary to reduce the annular gap as much as possible and increase the length of the plunger, which not only increases the volume of the plunger, but also increases the difficulty of manufacturing. It increases the manufacturing cost, and the bulky structure also makes it more difficult to increase the size of the plunger pump. The small plunger gap leads to high requirements for the cleanliness of the working fluid

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