RU2332611C2 - Greaser - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device is deigned to force grease to friction surfaces of assembly units and parts in operation of various machines and mechanisms. The greaser incorporates a casing with a plunger and check valves, a cylinder with a cover and a piston, the plunger being made up of two stages, the casing being furnished with two check valves and one of the flexible hoses being designed to force air into or suck it off from the cylinder.

EFFECT: higher efficiency and ease of operation.

2 dwg

Description

The invention relates to the field of engineering and can be used to pump greases and thick oils to the friction surfaces of the nodes and mechanisms of various machines during their operation.

A device for supplying lubricant is known (patent No. 224202). The lubricant is pumped in this lubricant supply device by means of a plunger through a check valve that is integrated at the outlet of the lubricant from the housing. Lubrication is supplied to the plunger using a piston, the movement of which is carried out using a rod moving along the threads made on the rod and in the cover. When the handle with the rod rotates, the piston moves and delivers lubricant to the plunger.

For reasons that impede the achievement of the following technical result when using the known device, the fact that in the known device for moving the piston it is necessary to periodically rotate the handle with the rod. This requires additional time, which reduces the productivity of the device, is inconvenient in operation; also this device due to the presence of the rod has large dimensions.

The closest device of the same purpose to the claimed invention in terms of features is a lubricant supply device according to US Pat. At the same time, a second plunger injects air through a check valve into the cylinder to move the piston and supply lubricant to the first plunger. For reasons that impede the achievement of the technical result indicated below when using the known device adopted as a prototype, the known device has two plungers and there is no flexible sleeve for pumping air into the cylinder. Therefore, the design of this device is more complex, has large dimensions and weight.

The objective of the present invention is to simplify the design, reducing the size and weight.

Comparison of the claimed device for supplying lubricant containing a housing with a plunger, check valves and two flexible sleeves, a cylinder with a cap and a piston, with the prototype allows us to conclude that the latter does not have features similar to the significant distinguishing features in the claimed device for supplying lubricant:

- the plunger has two stages;

- two air check valves are built into the body;

- one of the flexible hoses is made with the possibility of pumping air into the cylinder or aspirating air from the cylinder.

The set of features of the claimed technical solution has a difference from the prototype and the known analogue and does not follow explicitly from the studied prior art, therefore, the authors believe that the object is new and has an inventive step. The specified technical result in the implementation of the invention is achieved by the fact that in the claimed invention:

- the plunger has two stages;

- two air check valves are built into the body;

- one of the flexible hoses is made with the possibility of pumping air into the cylinder or aspirating air from the cylinder.

The combination of these features solves the problem of the invention: simplifying the design, reducing the size and weight of the device.

These signs are interconnected so that when one of them is eliminated, the technical result obtained by the invention disappears. The invention also represents a certain step in the development of technology and is progressive, as it allows to simplify the design, reduce the weight and dimensions of the device.

A lubricant supply device comprising a housing with a plunger, check valves and two flexible sleeves, a cylinder with a cap and a piston in which the invention is claimed can find wide application in mechanical engineering, i.e. is an industrially applicable technical solution.

The achievement of the technical result during the operation of the lubricant supply device, comprising a housing with a plunger, check valves and two flexible sleeves, a cylinder with a cover and a piston, is ensured by the fact that:

- the plunger has two stages;

- two air check valves are built into the body;

- one of the flexible hoses is made with the possibility of pumping air into the cylinder or aspirating air from the cylinder.

This solution allowed the reciprocating movement of one plunger to simultaneously pump lubricant to the friction surfaces and air through a check valve and a flexible sleeve into the cylinder. The first stage of the plunger, having a smaller diameter, pumps lubricant. The second stage, having a larger diameter, pumps air into the cylinder to create excess pressure and move the piston. In addition, the presence of a second air check valve and a flexible sleeve made it possible to draw air from the cylinder and move the piston in the opposite direction to fill the cylinder with lubricant. Compared with the known prototype, the design of the claimed device is simpler, which allows to reduce the weight and dimensions of the device.

The essence of the invention is illustrated by the accompanying drawings. The drawings depict a lubricant supply device, which consists of a cover 1, a piston 2, a lever 3, a cylinder 4, a plunger 5, a check valve 6, a stand 7, a flexible sleeve 8, a fitting 9, a housing 10, a safety valve 11 (Fig. 1 ) check valves 12 and 13, the flexible sleeve 14 (figure 2).

The preparation and operation of the device is carried out in the following order: disconnect the flexible sleeve 14 (figure 2) from the check valve 12 (figure 2), the cylinder 4 (figure 1) together with the cover 1 (figure 1), the flexible sleeve 14 (figure .2) and unscrew the piston 2 (Fig. 1) from the housing 10 (Fig. 1). In this case, the piston 2 (Fig. 1) should be in the extreme left position in the cylinder 4 (Fig. 1). Connect the flexible sleeve 14 (figure 2) to the check valve 13 (figure 2). To give a reciprocating movement to the lever 3 and the plunger 5 (Fig.1). As a result of suction of air from the cylinder 4 (FIG. 1) through the check valve 13 (FIG. 2) and the flexible sleeve 14 (FIG. 2), the piston 2 (FIG. 1) begins to move inside the cylinder 4 (FIG. 1). As the piston 2 moves, fill the cylinder 4 (Fig. 1) with lubricant. Disconnect the flexible sleeve 14 from the check valve 13 (figure 2). Screw the cylinder 4 with grease into the housing 10 (Fig. 1) until it stops. Connect the flexible sleeve 14 to the check valve 12 (figure 2), giving reciprocating movement to the lever 3 and the plunger 5, apply lubricant through the check valve 6, the flexible sleeve 8 and the union 9 (figure 1) to the friction surface. In this case, the device can be installed using the stand 7 (figure 1) in any convenient position for work (horizontal or vertical). Excess air in the cylinder 4 is removed through the safety valve 11 (figure 1).

Claims (1)

A lubricant supply device comprising a housing with a plunger and check valves, and two flexible sleeves, a cylinder with a cap and a piston, characterized in that the plunger has two stages, two air check valves are built into the housing, and one of the flexible sleeves is designed to discharge air into the cylinder or suction of air from the cylinder.

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