JPH0128310Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an electromagnetic pump, and its purpose is to prevent the generation of noise even when it is installed and used in equipment, and at the same time to make it easy to install it to the equipment. It is something.

Generally, electromagnetic pumps vibrate due to the movement of the plunger that pumps out the liquid, and this vibration propagates to the equipment, causing the equipment to generate harsh noise.

Most of this noise can be removed by interposing an elastic body such as a rubber seal between the pump body and the equipment, but the problem remains that minute noise cannot be removed and a small amount of noise continues to be generated. It was hot. Further, in this case, since it is necessary to arrange an elastic body between the pump body and the device, there is a problem that the work for assembling the pump is complicated and troublesome.

The present invention eliminates such problems, and one embodiment thereof will be described below with reference to the drawings.

In the figure, 1 is a plunger case, 2 is a plunger provided therein so as to be able to reciprocate, and has a check valve 3 for conveying liquid inside.
Magnetic path bodies 4 and 5 are arranged on the upper and lower outer peripheries of the plunger case 1, and 6 is an electromagnetic coil arranged on the outer periphery of the magnetic path bodies 4 and 5, which causes the plunger 2 to reciprocate. Reference numeral 7 represents a discharge port cylinder, and 8 represents a suction port cylinder, into which a strainer cylinder 9 is fitted. 10 is a pump board for holding the electromagnetic coil, 11 is a frame bolted to the pump board 10, and the electromagnetic coil 6,
This serves to securely hold the discharge port cylinder portion 7 and the like.

Reference numeral 12 denotes a leaf spring for absorbing pump vibration, which is bent into a substantially U-shape, and one end of which is fixed to the end of the pump board 10 with a fastener 13 such as a screw or rivet. . The other end of the leaf spring 12 is positioned opposite to the lower part of the pump board 10 with a gap therebetween, and a mounting hole 12a is formed therein. A large hole 15 for screw insertion is formed in a part of the pump board 10 facing the mounting hole 12a of the plate spring 12.

In this embodiment, the seat plate 1 is placed below the spring 12.
4 is arranged, and this seat plate 14 is held by a sealing sealing sheet 16 press-fitted into the suction port cylinder part 8, so that a seal can be formed when the pump is directly attached to the tank as described later. It's getting old.

Figure 4 shows an example of a case where the pump is directly attached to the tank 17, 18 is a screw for fixing the pump, 19
is a through hole for inserting the pump.

In the above structure, this pump first inserts its suction port cylinder part 8 into the through hole 19 of the tank 17, places the end of the leaf spring 12 on the tank, and then inserts the leaf spring 12 through the large hole 15 of the pump base plate 10. mounting hole 12a
Also, screw the screw 18 into the screw hole 17a of the tank 17 through the seat plate 14 and the packing sheet 16,
Complete the installation. Therefore, there is no need to align the screw insertion holes of the plate spring 12, the pump board 10, and the tank 17 during the pump installation process, and the work efficiency is extremely high. In particular, in the present invention, since the screw 18 can be tightened through the large hole 15 provided in the pump board 10, the work efficiency is improved.

On the other hand, the pump installed as described above vibrates due to the reciprocating motion of the plunger 2, but since this pump is supported in a hollow position by the leaf spring 12, the vibration is minute. Most of the noise will be absorbed by the leaf spring 12, and no noise will be generated. In particular, in this embodiment, as is clear from the drawings, the bent portion 12 of the leaf spring 12
Since b is made to protrude outward from the pump board 10 and bent into a ring shape, its vibration absorption ability is extremely good, and a higher noise prevention effect can be obtained.

Although the above embodiment has been described with reference to the case where the pump is directly attached to the tank 17, it is also possible to fix the pump in another location, and the pump is not limited to the embodiment.

As is clear from the above description of the embodiments, the electromagnetic pump of the present invention can be easily installed on equipment while providing a vibration isolator, and can also absorb minute vibrations, making it easy to install. Good sex,
Moreover, it can be made so that no noise is generated. In particular, since the large hole used for screwing is provided on the pump board, there is no need to widen the leaf spring as there would be if it were provided on the leaf spring itself, and the leaf spring can be used with the minimum necessary width. As a result, the vibration absorption effect is extremely good. In addition, the large hole provided in the pump board serves as a guide to reduce the inclination of the screw when it is first tightened, so that the screw tightening work can be performed more easily.

[Brief explanation of the drawing]

FIG. 1 is a side view of an electromagnetic pump according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view thereof, and FIG. 4 is a sectional view showing how it is attached to a tank. 2...Plunger, 10...Pump board, 1
2...Plate spring, 12a...Mounting hole, 15...Large hole.

Claims (1)

[Scope of utility model registration request] A leaf spring is attached to the end of the pump board that supports the electromagnetic coil for driving the plunger, and this leaf spring is bent into a substantially U-shape outward from the end of the pump board, and then the end is attached to the pump board. At the end of this leaf spring, a hole for mounting to a part to be mounted such as a device is provided, and a large hole is provided in a part of the pump board facing the mounting hole of the leaf spring, and this large hole An electromagnetic pump in which the mounting hole of the plate spring is screwed to the mounting part through the screw.