JPH0519580Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention draws viscous fluids such as grease directly from commercially available drums, pails, square cans, etc. This relates to a centralized lubricating oil transfer pump that transfers lubricating oil to

(Prior art and its problems) Generally, when transferring highly viscous fluids such as grease from drums, pails, square cans, etc. to the tank of a high-pressure oil supply pump, a manual transfer pump is used because it is simple and inexpensive. has been done. Note that the purpose of using such a transfer pump is to prevent foreign matter such as dust and air from being mixed into the viscous fluid.

As shown in FIGS. 5 and 6, such a conventional manual transfer pump includes a container 50 that stores a viscous fluid as a can shown by a phantom line, and a discharge port disposed above the container 50. a pump body 52 having one end located within the container 50 and the other end located within the pump body 52 and having a piston 5 therein;
3, a connecting rod 55 having one end connected to the piston 53 and the other end protruding outside the pump body 52, and one end rotatably connected to the pump body 52. A connected connecting member 56 and a pin 5 whose one end is rotatably connected to the other end of the connecting rod 55 and which is inserted into a fulcrum hole 57 bored on the other end side of the connecting part.
8, the control lever 59 is rotatably connected to the other end of the connecting member 56, and by operating the control lever 59, the viscous fluid in the container 50 is discharged from the discharge port 51. It is the composition.

However, when operating the above-mentioned conventional transfer pump, the operating force of the operating lever 59 changes drastically depending on the viscosity (in the case of grease, it is called consistency) of high viscosity fluid such as grease. In other words, the higher the viscosity, the heavier it becomes, and especially with grease, this tendency becomes stronger when the temperature of the grease drops in the winter.
There was a problem in that the operation force of 9 was increased and the operation became very heavy, making the grease replenishment work cumbersome.

(Means for Solving the Problems) The present invention includes a container containing a viscous fluid, a pump body disposed above the container and having a discharge port, one end of which is located within the container, and the other end of which is located above the container. A suction pipe located inside the pump body and having a piston disposed therein; a connecting rod having one end connected to the piston and the other end protruding outside the pump body; and one end connected to the pump body. a connecting member that is rotatably connected; one end of the connecting rod is rotatably connected to the other end of the connecting rod; and an operating lever rotatably connected to the other end of the connecting member within the recess by a pin inserted through a fulcrum hole, the viscous fluid in the container being controlled by operating the operating lever. In the centralized lubricating oil transfer pump that discharges from the discharge port, the concave portion extends in the longitudinal direction of the operating lever, and the operating lever is provided with a plurality of fulcrum holes passing through the concave portion, in addition to the connecting member using the pin. This central lubricating oil transfer pump is characterized in that the swinging fulcrum of the operating lever can be varied by changing the connection position with the end portion.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

Fig. 1 is a longitudinal sectional front view of a centralized lubricating oil transfer pump according to an embodiment of the present invention, and Fig. 2 is a side view of the same.
Inside the container 1, a can 2 such as a drum, pail, or square can containing a viscous fluid such as grease is housed. A lid 3 is detachably attached to the upper end of the container 1 with a plurality of fasteners 4, and a pump body 6 is fixed to the upper surface of the lid 3 with a plurality of bolts 5. This pump body 6
has a discharge port 7 to which a flexible hose 8 is connected. A suction pipe 9 passes through the lid 3, the suction port 10 at the lower end of the suction pipe 9 reaches the lower end inside the can 2, and the upper end of the suction pipe 9 is screwed into the pump body 6. It matches. A piston 11 is disposed inside the suction pipe 9, and a suction check valve 12 is disposed between the piston 11 and the suction port 10. A discharge check valve 13 is installed on the piston 11, and the piston 11 is fixed to the lower end of a connecting rod 14. The upper end of the connecting rod 14 passes through the pump main body 6 and protrudes above it. A lower end portion of a connecting member 15 is rotatably connected to the pump body 6 by a pin 16.
An operating lever 17 is disposed above the pump body 6, and as shown in detail in FIG. It is rotatably connected to the upper end of the connecting rod 14 by a pin 19. Further, the operating lever 17 has the connecting hole 1.
The first fulcrum hole 2 is inserted through a downwardly opening recess 27 extending in the longitudinal direction of the operating lever 17 on the other end side than the first fulcrum hole 8 .
0 is bored, and is rotatably connected to the upper end of the connecting member 15 through a pin 21 inserted through the first fulcrum hole 20. The pin 21 is
As shown in detail in FIG. 4, it has a retaining head 22 at one end, a hole 23 at the other end, and a clip 24 as a retaining fitting is inserted into this hole 23. Extraction is prevented. This retaining metal fitting is not limited to the clip 24, but a split pin, a nut, etc. can be used. A second fulcrum hole 25 is bored in the operating lever 17 and passes through a recess 27 between the connection hole 18 and the first fulcrum hole 20, and a connection point with the upper end of the connection member 15 is provided. The first fulcrum hole 20 and the second fulcrum hole 25
It is possible to arbitrarily switch between the two.

Next, the effect will be explained. In a normal state, the pin 21 is inserted into the first fulcrum hole 20 as shown in the figure,
The first fulcrum hole 20 is used as a connection point with the connection member 15, and the operating lever 17 is operated up and down. As a result, the piston 11 moves up and down inside the suction pipe 9, and the viscous fluid in the can 2 is discharged from the discharge port 7 and transferred to a predetermined location through the flexible hose 8. For example, when the viscosity of the viscous fluid is high, such as in winter, the clip 24 is removed and the pin 21 is pulled out from the first fulcrum hole 20.
1 through the second fulcrum hole 25 and press the operating lever 17.
The connecting point between the connecting member 15 and the connecting member 15 is changed to the second fulcrum hole 25. As a result, the swinging fulcrum of the operating lever 17 changes, and although the operating angle of the operating lever 17 becomes larger, the operating force becomes smaller and the operation becomes very light, making it easier to replenish viscous fluids such as grease. And it can be done quickly.

(Another Embodiment) In the above embodiment, the operating lever 17 has a first
Although an example in which two fulcrum holes, the fulcrum hole 20 and the second fulcrum hole 25 are provided, has been described, the operating lever 1
7 is provided with three or more fulcrum holes, and the operating lever 17 is adjusted as appropriate.
It goes without saying that the structure may be such that the swing fulcrum is adjusted.

(Effect of the invention) As explained above, according to the invention, the operating lever is provided with a plurality of fulcrum holes, and the swinging fulcrum of the operating lever is changed by changing the connection position with the other end of the connecting member using the pin. Since it has a variable configuration, by changing the swinging fulcrum of the operating lever according to the viscosity of the viscous fluid, the operating lever can always be operated with a constant operating force even if the viscosity of the viscous fluid changes greatly. To easily and quickly replenish viscous fluids such as grease. In the present invention, a downwardly opening recess 27 extending in the longitudinal direction of the operating lever 17 is provided near the connecting hole 18 of the operating lever 17, and a plurality of fulcrum holes 20, 25 are bored through this recess 27.
The upper end of the connecting member 15 is connected to the operating lever 17 via the pin 21 within the recess 27, so if the heights of the fulcrum holes 20 and 25 are aligned, the pin 21 can be removed from the fulcrum hole 20 and the upper end of the connecting member 15 can be removed. The pin hole can be easily changed to the connection position with the fulcrum hole 25 and the pin 21 can be inserted. At that time, since the upper end of the connection member 15 is supported by the recess 27, there is no wobbling and the position is fixed. It will also be easier to match. Also, operation lever 1
7 can be obtained by simply changing a part of the conventional structure, so it can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a centralized lubricating oil transfer pump according to an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a front view of the operating lever, and FIG. 4 is an explanatory diagram of the pin and clip. FIG. 5 is a longitudinal sectional front view of a conventional centralized lubricating oil transfer pump, and FIG. 6 is a side view of the same. DESCRIPTION OF SYMBOLS 1... Container, 6... Pump main body, 7... Discharge port, 9... Suction pipe, 11... Piston, 14... Connecting rod, 15... Connecting member, 17...
...Operation lever, 20...First fulcrum hole, 21...
Pin, 25...second fulcrum hole.

Claims (1)

[Scope of utility model registration request] A container containing a viscous fluid, a pump body disposed above the container and having a discharge port, one end of which is located within the container, the other end of which is located within the pump body, and a piston is disposed therein. a suction pipe; a connecting rod having one end connected to the piston and the other end protruding outside the pump body;
a connecting member having one end rotatably connected to the pump body; and a concave portion opening downward and having one end rotatably connected to the other end of the connecting rod and slightly on the other end side of the connecting portion. an operating lever rotatably connected to the other end of the connecting member within the recess by a pin inserted into a fulcrum hole bored through the recess; In a centralized lubricating oil transfer pump that discharges a viscous fluid in a container from the discharge port, the recess extends in the longitudinal direction of the operating lever, and the operating lever is provided with a plurality of fulcrum holes passing through the recess, and A centralized lubricating oil transfer pump characterized in that the swinging fulcrum of the operating lever can be varied by changing the connection position of the connecting member with the other end of the pin.