JPS59126090A - Pump device - Google Patents

Abstract

PURPOSE:To reduce the fear of leakage of air by a method wherein a diaphragm is reciprocated by an eccentric column body which revolves in accordance with the rotation of a main shaft to eliminate a sliding surface in the flow path of fluid. CONSTITUTION:The eccentric column body 11 effects a circular motion having a radius of an eccentricity (e) between the centers of the main shaft 4 and the eccentric colum body 11. Accordingly, a cylindrical surface around a bearing 12 reciprocates with respect to a contact plate 8 with the stroke of 2e and the diaphragm 7 reciprocates. Suction and delivery are effected by the reciprocating motion of the diaphragm 7 and the fluid may be supplied. The diaphragm 7 reciprocates in such a manner, therefore, there is no sliding surfaces in the flow path of the fluid and the possibility of leakage of air may be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small pump device used for pumping gas or liquid.

Conventionally, various pump devices have been proposed and put into practical use. Pumps for gases, which are compressible fluids, cannot use centrifugal pumps, so vane pumps and piston pumps are used.However, with vane pumps, it is difficult to maintain airtightness between the side of the blade and the side wall of the case, and piston pumps with trenches are prone to dust. If it flows in, it tends to damage the sliding surface, which has the disadvantage of shortening its life.

The present invention aims to provide a pop device which has a simple structure, has less risk of airtight leakage, and is less likely to be damaged even if a small amount of dust enters.

An embodiment of the fluid popper according to the present invention will be described based on FIG. 1MiliZ.

First, I will explain the structure.

Reference numeral 1 denotes a pump case, which is composed of a cylindrical portion 2 and end plate portions 3.3 disposed at both ends of the cylindrical portion 2.

Reference numeral 4 denotes a main shaft disposed through the pump case 1, and is rotatably supported by bearings 5, 5 disposed in the middle of the end plates 3, 3. 6, 6 is the cylindrical part 2 of the pump case 1
The diaphragm mounting holes are provided symmetrically with the main shaft 4 in between. 7 is a diaphragm arranged so as to close the diaphragm mounting hole 6; 8 is a rigid contact plate placed on the inner surface of the central portion of the diaphragm 7; together with a rigid auxiliary plate 9 placed on the central portion of the outer surface of the diaphragm 7; They are sewn together by bolt nuts 10 and fixed together to the diaphragm 7. 11 is an eccentric cylindrical body integral with the main shaft 4, and 12 is a bearing 1't fitted with the eccentric cylindrical body 11Vc, for example, a rolling yoke 1 bearing. 13 is the opposing contact plate 8.8
8.8'f: Lightly contacts the cylindrical surface around the bearing 12 (for example, the outer race of a rolling bearing).

Reference numeral 14 denotes a cover placed on the outside of the diaphragm 7, and is fixed to the pump case 1 with bolts 15. 16.
Reference numeral 17 denotes a suction chamber and a discharge chamber provided in the cover 14, which are connected to the suction pipe 18 and the discharge milk 19, respectively, and are connected to the suction chamber 16.
A suction valve 20 that only allows flow into the cover 14 is provided between the inner part 11 and the force, < -14.
A discharge valve 21 is provided between the discharge chamber 17 and the discharge chamber 17 to allow flow only to the discharge chamber 17. As described above, the diaphragm chamber 22 is constructed.

23 is a drive pulley provided at one end of the main shaft 4, and 24 is a nozzle/thwaite fitted and fixed to the main shaft 4.

Next, the effect will be explained.

Power is transmitted from a power source (not shown) to the pulley 23 via an arbitrary power transmission means, causing the main shaft to rotate by four forces. Then, the eccentric cylindrical body 11 rotates with the center line of the main shaft 4 as the central axis. As a result, the center and eccentricity of the main shaft 4 and the cylindrical body 1 are
The eccentric cylindrical body 11 performs a circular motion having a radius equal to the eccentricity -Cr amount e with respect to the center of the cylinder. Therefore, the cylindrical surface around the bearing tool 12 performs a reciprocating motion with a loaf of 2 ets relative to the contact plates 8, 8, and the diaphragm 7 reciprocates. When the diaphragm 7 moves away from Kak(-14), the suction valve 20 opens and sucks fluid from the suction chamber 16 into the diaphragm chamber 25.
When the diaphragm 7 still approaches the cover 14, the discharge valve 21 does not open to push the fluid in the diaphragm chamber 25 into the discharge chamber 17. The two discharge pipes 19゜19 are sent to the required location together ('c).Of course, the two suction pipes 18, 1
8 sources are the same fluid source.0 As described above, the pump device according to the present invention has an even number of diaphragm flanges and 10°/build bodies 22 arranged in the center of the main shaft 4, and An integrated eccentric cylinder t:
Two diaphragms 7.7, which are located close to each other and slightly symmetrical with the main shaft 4 in between, are connected by a connector 13. Diaphragm pump unit 2
275; Prompt 11-ru woman 11< structure Jjk. In the present invention, since there is no sliding surface in one flow path, the risk of airtight leakage is reduced by 75 balls.

Since the bearing 12 with a cylindrical outer circumferential surface is attached to the M of the two tangent plates 8, 8, which always keep the same distance when moving, the movement of the bearing 12 along the contact plate 8 is at the same angle as the p tangent. Even if it becomes an insect, the amount of movement is extremely small, so the amount of wear on the insect contact plate 8 and the bearing 12 is extremely small, and it has an excellent surface 1. .2
2 alternately suction and discharge, the pressure fluctuations in the suction pipe 18 and the discharge pipe 19 are also small.

In addition, in the embodiment shown in 1, the diaphragm, + 7
゜In this case, is the connector 18 oriented toward the axis of the main shaft 4? D one 1
The positions are shifted little by little to avoid mutual interference.

Furthermore, heat dissipation fins 26 can be provided on the cover 14 and the pump case 1 if necessary.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical cutaway front view of the whole, and FIG. 2 is a cutaway view taken along the line 1--2 of FIG. 1. 4 Main shaft diaphragm 8 contact plate 11 fIiMI cylinder 12 bearing 13 connection J"!. 22 diaphragm bomb Φ body special
Patent Attorney Furu 1) Tsuyoshi Keiru Zguchi

Claims (1)

[Claims] A rigid body in which an even number of diaphragm pumps are arranged around the main shaft, and an oblique cylindrical body integrated with the main shaft is fixed to the inner surface of the center of each diaphragm via a bearing with an inner cylindrical surface. The diaphragms 2 (l!iI), which are placed close to the contact plate and in symmetrical positions with the main shaft in between, are connected by a connector, and as the main shaft rotates, the diaphragms are moved back and forth by the cylindrical body, and each diaphragm pops. A pop device characterized in that it is constructed so that a single unit operates.