JPS5922077B2 - pump unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pump unit used in an oil supply system, etc.
A pump unit that has a pump chamber, strainer chamber, filter chamber, air separator chamber, etc. in one casing, and does not require the trouble of removing the casing from the processing machine or changing its mounting position during processing of the casing. Regarding.

Conventionally, one casing contained a pump chamber, a strainer chamber,
In a pump unit in which a filter chamber, an air separator chamber, etc. are arranged, the machined holes, fluid suction ports, vertebral body discharge ports, etc. of each of the pump chamber, strainer chamber, filter chamber, and air strainer chamber are located at the front and rear of the casing. , were placed on the left, right, top and bottom sides, so when processing the casing, the two opposing sides were chucked into the processing machine and the other four sides were processed, and then the casing was replaced and the two opposing sides It was necessary to perform some processing.

The purpose of the present invention is to eliminate the drawbacks of the above-mentioned conventional devices.
By removing the two opposing faces of the hexahedral casing (by arranging it on either side, it is possible to eliminate the trouble of removing the casing from the processing machine during casing processing and repositioning the casing). It is characterized by

Embodiments of the present invention will be described below based on the drawings.

In FIGS. 1 to 7, 1 is a casing, which is formed into a hexahedron.

Two opposing surfaces of the casing 1, here both sides IA and I
Let B be the surface to be chucked, as shown in Figure 4,
A fluid suction port 2 is opened on the lower surface 1C of the casing 1, and a first
As shown in the figure, a fluid discharge port 3 is opened in the upper surface 1D of the casing 1.

4 is a suction pipe attached to the fluid suction port 2.

As shown in FIGS. 5 and 6, a pump chamber 5 is provided inside the casing 1, a machined hole 6 of the pump chamber 5 is provided in the front surface 1E of the casing 1, and the hole 6 is provided with a removable lid member 7. Close the lid.

A pump shaft 8 is provided inside and outside the pump chamber 5 by penetrating the lid member 7, and an eccentric rotor 10 equipped with vanes 9, 9, etc. that can be moved in the radial direction is mounted on the outer periphery of the shaft 8 on the side of the pump chamber 5, A pump pulley 11 is attached to the outer end of the shaft 8.

12 and 13 are an inlet and an outlet opening into the pump chamber 5, respectively.

As shown in FIGS. 4, 6, and 7, a strainer chamber 14 is provided between the pump chamber 5 and the fluid suction port 2.

The strainer chamber 14 has two chambers 14A and 1 separated by a partition wall 15.
4B, with one chamber 14A facing the fluid inlet 12 and the other chamber 14B facing the inlet 12 of the pump chamber 50.

A machined hole 16 for the strainer chamber 14 is provided in the front surface 1E of the casing 1, a hole 17 is provided in the partition wall 15 to communicate the two chambers 14A and 14B, and a strainer 18 is installed between the core 17 and the machined hole 16. .

Reference numeral 19 denotes a removable lid member for covering the machined hole 16, which also serves to support one end of the strainer 18.

As shown in FIGS. 1 and 4 to 6, a filter chamber 20 is provided between the pump chamber 5 and the fluid discharge port 3, and the filter chamber 20 and the outlet 13 of the pump chamber 5 are connected via a chamber 21. The filter chamber 20 and the fluid discharge port 3 are connected to each other through a passage 22.
and 22'.

On the rear surface 1F of the casing 1, there is a machined hole 2 for the filter chamber 20.
3 and inserting the filter 24 through the pull-out hole 23, as shown in FIG.
Close the lid.

As shown in FIGS. 2 and 6, passage 22 and passage 22'
A check valve 27 is inserted into the passage 22 from the opening 26 to open the upper surface 1D of the casing 1, and the opening 26
The lid is closed with a removable lid member 28.

29 is a spring that biases the check valve 27.

As shown in FIGS. 5 and 7, an air separator chamber 30 is provided adjacent to the filter chamber 0, pump chamber 5, strainer chamber 140 chamber 14B, and chamber 21, respectively, and an air separator chamber 30 is provided on the rear surface 1F of the casing 1. Machining hole 31 in chamber 30
As shown in FIG. 3, the hole 31 is covered with a removable cover member 32.

As shown in FIGS. 4 and 5, the upper surface 1 of the casing 1
The lid member 33 is removably attached to D, and the filter chamber 2
0 and the air separator chamber 30 are communicated through a passage 34 formed in the lid member 33.

In this case, a filter chamber 20 is provided on the upper surface 1D of the casing 1.
A passage 35 is provided which communicates the passage 34 with the passage 34, and a passage 36 which communicates the passage 34 with the air separator chamber 30 is provided.

As shown in FIGS. 5 and 1, the air separator chamber 30
The chamber 14B communicates with the chamber 14B through a passage 37 provided in the lid member 32.

In this case, a passage 38 that communicates the air separator chamber 30 and the passage 37 is provided on the rear surface 1F of the casing 1, and a passage 39 that communicates the passage 37 and the chamber 14B is provided.

A float chamber 40 is provided in the air separator chamber 30 so as to be floating, and a valve 41 for opening and closing the passage 38 is provided in the float chamber 40.
Install.

As shown in FIG. 1, an air hole 42 is provided in the upper surface 1D of the casing 1 to open the air separator chamber 30 to the atmosphere.

As shown in FIGS. 1, 2, 5, and 7, a relief valve 43 is attached to the front surface 1E of the casing 1.
3, the chamber 21 and the chamber 14B are communicated with each other.

In this case, the front IE of the casing 1 has a chamber 21 and an IJ.
A passage 45 is provided which communicates the passage 44 of the IJ-F valve 43, and a passage 46 which communicates the passage 44 with the chamber 14B is provided.

A valve body 47 is incorporated in the flow path 44, and when the internal pressure of the chamber 21 reaches a certain level or more, the valve body 47 opens against the spring force of the spring 48.

In FIG. 1, 49, 49, . . . are screw holes for attaching a flow meter (not shown) or the like.

In the pump unit having the above configuration, the pump pulley 11
When is rotated clockwise in FIG. 2 by a motor (not shown), the eccentric rotor 10 is rotated in the same direction together with the pump shaft 8, and due to the eccentric movement of the rotor 10, the rotor 10,
A volume change occurs in the chamber formed by the vanes 9 and the inner surface of the casing 1, and liquid movement occurs.

At this time, the liquid in the oil supply tank (not shown) connected to the suction pipe 4 is sequentially transferred to the suction pipe 4, the fluid suction port 2, and the chamber 14A.
, strainer 18, chamber 14B, pump port 12, pump outlet 13, chamber 21, filter chamber 20, filter 24, passage 22, check valve 27, and passage 22, and is discharged from the fluid outlet 3 to the outside, and the fluid is discharged to the outside through the fluid discharge port 3, and the flow meter, etc. is sent to the refueling nozzle.

Note that the backflow of liquid is prevented by the check valve 27.

Also, to explain the gas-liquid separation process of the above-mentioned device,
The liquid containing gas accumulates above the filter chamber 20,
The air is sent to the air separator chamber 30 through the passage 35, passage 34, and passage 36 in order, and is separated into gas and liquid within the chamber 30. The gas is isolated to the atmosphere from the air hole 42, and the liquid is sent to the air separator chamber 30. Accumulates inside.

When the liquid accumulates above a certain level, the float chamber 40 floats up, the valve 41 attached to the float chamber 40 opens, and the passage 3
For this purpose, the liquid is led back into the pump via passage 38, passage 37, passage 39 and chamber 14B in sequence.

After pump operation, if actual lubrication is not performed, the chamber 2
1 increases, the valve element 4 of the IJ IJ- valve 43 increases.
7 opens against the spring 48, and the liquid discharged from the pump outlet 13 is sequentially transferred to the chamber 21, the relief valve 43, and the chamber 14B.
It is circulated to the pump population 12 through.

As explained above, the present invention forms the casing into a hexahedral shape, and the machined holes, fluid suction ports, and fluid discharge ports of the pump chamber, strainer chamber, filter chamber, and air separator chamber are formed on two opposing faces of the casing. When processing the casing, the processing can be completed by performing four-sided processing with the two opposing sides of the casing chucked in the processing machine. .

Therefore, the trouble of removing and repositioning the casing during processing is eliminated, and production efficiency is significantly increased.

Furthermore, since there is no need to perform any processing on the two opposing surfaces, the number of processing steps can be reduced.

In addition, in the case where each of the machined holes in the pump chamber, strainer chamber, filter chamber, and air separator chamber is covered with a removable lid member, the airtightness of each chamber can be easily ensured, and This has the advantage that components can be easily taken in and out of each chamber.

In addition, if the holes for the pump chamber and the strainer chamber are provided on the - side of the casing, and the holes for the filter chamber and air separator chamber are provided on the other - side, it is necessary to This has the advantage of making efficient use of space.

Furthermore, the passage connecting the air separator chamber and the filter chamber is formed on the lid member provided on either side of the casing, except for the two opposing sides of the casing (in the case of a case where the passage is formed on a lid member provided on either side, the structure of the casing is simplified). Take advantage of the benefits you get.

Furthermore, in the case where the passage that communicates the air separator chamber and the strainer chamber is formed in the lid member that covers the machined hole of the air separator chamber, there is an advantage that the structure of the casing can be simplified. This has the advantage that accessory parts can be omitted by sharing the lid member.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a pump unit showing an embodiment of the present invention. FIG. 2 is a partially broken pressure surface view in FIG. 1. FIG. 3 is a rear view of FIG. 1. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2. FIG. 5 is a sectional view taken along the line v-V in FIG. 2. FIG. 6 is a sectional view taken along the line VI-Vl in FIG. 5. FIG. 7 is a sectional view taken along the line ■-■ in FIG. 5. 1... Casing, 2... Fluid suction port, 3... Fluid discharge port, 5... Pump chamber, 14... Strainer chamber , 20... Filter chamber, 30... Air separator chamber, 6, 1
6, 23, 31... Machining hole, 7°19.25,
32, 33... Lid member, 34. 37...
··aisle.

Claims (1)

[Scope of Claims] 1 A casing having a fluid suction port and a fluid discharge port includes a strainer chamber communicating with the fluid suction port, a pump chamber communicating with the strainer chamber, and a pump chamber communicating with the pump chamber and containing the fluid. In a pump unit that includes a filter chamber communicating with a discharge port, and an air separator chamber communicating with the filter chamber and the strainer chamber through independent passages, the casing is formed into a hexahedron, and the pump chamber , a pump unit characterized in that the machined holes of each of the strainer chamber, the filter chamber, and the air separator chamber, the fluid suction port, and the fluid discharge port are provided on any side of the casing other than two opposing surfaces. 2. The pump unit according to claim 1, wherein each of the machined holes in the pump chamber, strainer chamber, filter chamber, and air separator chamber is covered with a removable cover member. 3. Claim 1, characterized in that the pump chamber and the strainer chamber each have a machined hole on the negative side of the casing, and the filter chamber and the air separator chamber each have a machined hole on the other negative side. Pump unit as described in section. 4. The pump unit according to claim 1, wherein the passage communicating the air separator chamber and the filter chamber is formed in a lid member provided on any one of the two opposing surfaces of the casing. . 5. The pump unit according to claim 1, wherein the passage communicating the air separator chamber and the strainer chamber is formed in a lid member that covers the machined hole of the air separator chamber.