Plunger structure and plunger pump

Abstract

A plunger structure and a plunger pump are provided, relating to the technical field of plunger pumps. In one exemplary implementation, the plunger structure may comprise a plunger body with both ends closed, an engagement groove disposed at the top of the plunger body, a plunger cap fixedly connected to the engagement groove, and / or an elastic member having one end fixedly disposed within the plunger cap. The plunger body may be sheathed in the elastic member. According to other aspects, a top end of the plunger body may be exposed out from the plunger cap, an engagement groove that is depressed inwardly may be formed in a circumferential direction of the top of the plunger body, an inside of the plunger body may be in a cavity structure, and / or the plunger body may be an integrally molded part.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims benefit / priority to Chinese Patent Application No. 201710470921.8, filed Jun. 20, 2017, published as ______, and entitled “Plunger Structure and Plunger Pump,” the contents of which are herein incorporated by reference in their entirety.BACKGROUNDField[0002]The present disclosure relates to the technical field of plunger pumps, and in particular to a plunger structure (plunger piston structure) and a plunger pump (plunger piston pump).Description of the Related Art[0003]In industrial manufacturing and daily life, the cleaning and removal of impurities from a device or an article is generally performed by using a high-pressure water gun. Among them, in the high-pressure washer industry, a power component of the washer mostly employs a plunger pump. For the plunger pump, normal operation of a body is achieved by causing a change of the sealed volume depending on a reciprocating movement of a plunger in a cylinder bor...

AI Technical Summary

Benefits of technology

[0014]The plunger structure in the present disclosure may comprise a plunger body with both ends closed and an engagement groove disposed at the top of the plunger body, wherein the engagement groove is, e.g., formed by recessing inwardly in a circumferential direction of the top of the plunger body, and an inside of the plunger body is in a cavity structure. Since the inside of the plunger body is in a cavity structure, the weight of the plunger body is reduced, thereby reducing the inertia of the plunger structure during its operation within the plunger pump, increasing the rotational speed of the plunger pump, and increasing the self-priming property of the plunger pump, thereby improving the working efficiency of the plunger pump. Here, the plunger with an internal cavity structure also saves processing materials, thereby reducing the production cost of the plunger structure.

[0015]Moreover, according to the characteristics of sound transmission, when sound is transmitted from one medium to the next medium, if two adjacent media are made of different materials, there is a great difference in resonance frequency between the media, and then a loss of sound energy will be caused. When the plunger body is working, noise generated during the movement of the plunger body is transmitted from one side of the plunger body to air in the hollow inside, and then transmitted to the other side of the plunger body. During the process, the media adjacent to each other are different, thus the energy of sound is greatly lost, and the noise generated when the present plunger works is reduced.

[0016]In addition, the plunger body may be an integrally molded part, which prevents the plunger body from being broken under a strong working state of the plunger structure, prolongs the service life of the plunger structure, and / or thereby also allows a plunger pump to work more stably, which may also improve the working efficiency of the plunger pump, and / or enable improve practical usage and functionality.

[0017]According to the disclosed technology, a plunger pump having the plunger structure described above may be provided.

[0018]In certain implementations, the plunger pump may further comprise a pump body and a motor actuating movement of the pump body, wherein the pump body may be fixedly connected with an inlet pipe and an outlet pipe sequentially, and an overflow valve may be disposed between the inlet pipe and the outlet pipe.

[0019]In further implementations, a piston ring may be provided in the pump body, the piston ring configured to be connected with the plunger body, wherein the piston ring may comprise a piston ring body, a plunger sleeve positioned inside the piston ring body, and a reinforcing rib positioned between an outer wall of the plunger sleeve and an inner wall of the piston ring body. Further, one or both of the plunger sleeve and the piston ring body may be fixedly connected with the reinforcing rib.

[0019]In further implementations, a piston ring may be provided in the pump body, the piston ring configured to be connected with the plunger body, wherein the piston ring may comprise a piston ring body, a plunger sleeve positioned inside the piston ring body, and a reinforcing rib positioned between an outer wall of the plunger sleeve and an inner wall of the piston ring body. Further, one or both of the plunger sleeve and the piston ring body may be fixedly connected with the reinforcing rib.

[0021]According to some implementations, the plunger pump may further comprise a controller, a buzzer for alarm, a switch provided with a solenoid valve, a current overload protector configured to detect a current, and / or a temperature sensor configured to detect a temperature of the pump body. wherein the buzzer, the switch, the overload protector, and the temperature sensor are all electrically connected with the controller.

[0013]Some beneficial effects of the disclosed technology include the following:

Problems solved by technology

The solid plunger requires many materials and has high production cost.

Moreover, the solid structure causes a heavy overall weight, which results in greater friction between the plunger and the plunger pump during working, reducing the working efficiency of the plunger pump.

The open hollow plunger is easily deformed during the production process, and under a working state, the plunger body is subjected to a high-temperature and humid environment so that the inner wall is prone to rust to damage the plunger body, thus the open hollow plunger has short service life, and therefore has the technical problems of low working efficiency and short service life.

Implementations of the disclosed technology provide a plunger structure and a plunger pump, to alleviate the technical problem that a hollow plunger of the prior art has low working efficiency and short service life.

Moreover, according to the characteristics of sound transmission, when sound is transmitted from one medium to the next medium, if two adjacent media are made of different materials, there is a great difference in resonance frequency between the media, and then a loss of sound energy will be caused.

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