JPH0137719Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on a liquid ejector that sucks the liquid inside the container into the cylinder by vertical movement of the push-down head, and jets out the liquid inside the cylinder from a nozzle provided on the push-down head. Related.

Although this type of liquid ejector is widely used for various purposes, it has the disadvantage that the function of the ball valve used as a discharge valve tends to be incomplete when ejecting highly viscous liquid.

The present invention eliminates this drawback, and will be described below with reference to the drawings. Reference numeral 1 indicates a cap-shaped member.
The member has a peripheral wall 2 that is screwed into the neck of the container body, and a top wall 3 at the upper end of the peripheral wall is provided with an insertion hole 4 for a stem, which will be described later. The upper half of the peripheral wall has a small diameter,
The lower half is formed into a large diameter spiral cylinder.

A cylinder 5 is vertically disposed with its upper end fitted into the cap-like member. An outward flange 6 is attached slightly below the upper end of the cylinder, the upper end of which is attached to the inner surface of the small diameter portion of the circumferential wall, and the outward flange is attached to the overhanging wall portion 2a between the small diameter portion and the large diameter portion of the circumferential wall. It is fitted in contact with the lower surface. A suction valve hole 7 is bored in the center of the bottom wall at the lower end of the cylinder, and a fitting cylinder 8 is suspended from the periphery of the valve hole. It is fitted.

A suction valve is formed in the bottom of the cylinder and an elastic valve body 10 is fitted therein. The elastic valve body has a bottom wall at the lower end of the fitting peripheral wall 11, a C-shaped cut line is provided at the center of the bottom wall, and a tongue-shaped valve body 12 is formed inside the C-shaped cut line. The fitting peripheral wall is placed within the lower end of the cylinder peripheral wall, and the lower surface of the peripheral edge of the tongue-shaped valve body is placed and fitted on the upper surface of the peripheral edge of the suction valve hole. The suction valve hole 7 and the tongue-shaped valve body form a suction valve. The elastic valve body is conventionally known and is formed in the same manner as the elastic valve body for forming a discharge valve, which will be described later.

A cylindrical piston 13 is fitted into the cylinder, and a stem 14 is erected from the cylindrical piston through the insertion hole 4. The cylindrical piston and stem form the actuating member 15. The member may be integrally molded, or, as shown in the figure, the cylindrical piston and stem may be separately molded and fitted together.

The lower half of the cylindrical connecting member 16 is fitted into the upper end of the stem. The lower half of the connecting member has a small inner diameter, and the upper half has a large inner diameter. An inward flange 17 is provided on the inner surface of the intermediate portion of the connecting member, and a flange hole of the flange forms a discharge valve hole 18 .

In the upper half of the connecting member, an elastic valve body 19 is provided similar to the elastic valve body 10 for forming the suction valve described above.
However, the fitting peripheral wall 20 is fitted into the upper half cylinder part of the connecting member, and the lower surface of the periphery of the tongue-shaped valve body 21 is placed on the upper surface of the periphery of the discharge valve hole 18. . Note that 22 is a C-shaped cut line, 23 is a bottom wall, and 24 is a connecting portion between the tongue-shaped valve body and the bottom wall.
The discharge valve hole and the tongue-shaped valve body form a discharge valve 25.

A fitting cylindrical portion 27 extending vertically from the lower surface of the push-down head 26 is fitted into the outer surface of the upper half of the connecting member. The push-down head causes the nozzle 28 to project laterally outward.

A coil spring 29 is mounted within the cylinder described above and biases the actuating member 15 upward.

In the above structure, when the suction pipe and cylinder are placed inside the container and the cap-like member is screwed into the neck of the container, and the push-down head 26 is moved up and down, the suction valve closes when the operating member descends.
When the discharge valve opens, the liquid inside the cylinder is ejected through the stem, discharge valve, and nozzle.When the operating member rises, the discharge valve closes, and the suction valve opens, and the liquid inside the container flows through the suction pipe and suction valve into the cylinder. It is something that is inhaled.

In this case, the discharge valve is formed by the tongue-like valve body 21 attached to the elastic valve body and the discharge valve hole 18, so that the connecting portion 24 between the elastic valve body and the tongue-like valve body is As soon as the liquid finishes passing through the discharge valve hole due to its elasticity, the lower surface of the periphery of the tongue-shaped valve body comes into contact with the upper surface of the periphery of the discharge valve hole and closes the discharge valve. The viscosity of the liquid prevents the ball valve from adhering to the inner wall surface of the valve box, resulting in incomplete opening and closing of the discharge valve. Moreover, the elastic valve body 19 is
Since the connecting member is fitted into the upper half of the connecting member, the lower half of the connecting member is fitted into the upper end of the stem, and the upper half of the connecting member is fitted into the fitting cylinder of the push-down head. By replacing the connecting member with a connecting member with a ball valve, it is possible to modify the liquid ejector to have a ball valve type discharge valve.In this way, the discharge valve can be changed depending on the state of the ejected liquid. Furthermore, the elastic valve body 19 can be easily replaced.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional view of the liquid ejector of the present invention, and FIG. 2 is an enlarged plan view of an elastic valve body for forming a discharge valve used in the liquid ejector. 1... Cap-shaped member, 5... Cylinder, 15
. . . Actuating member, 26 . . . Push-down head.

Claims (1)

[Scope of utility model registration request] A cap-shaped member 1 provided so as to be attachable to the neck of the container body, a cylinder 5 suspended from the member, and a cylindrical piston 13 fitted into the cylinder, which is bored into the top wall of the cap-shaped member. An actuating member 15 that allows the stem 14 to stand up through the inserted insertion hole, and a push-down head 2 with a nozzle fitted to the upper end of the stem.
6, when the head is pressed down, the liquid in the cylinder is ejected from the nozzle, and when the head is released, the actuating member rises, and the liquid inside the container flows through the suction pipe 9 hanging from the lower end of the cylinder. In this liquid ejector, a cylindrical connecting member 16 is provided between the stem and the push-down head, the lower half of the member is connected to the upper end of the stem, and the upper half is pushed down. The elastic valve body 19 with a tongue-like valve body 21 is fitted into the upper half of the connecting member, and the tongue-like valve body 21 is fitted into the fitting cylinder portion 27 of the head. A liquid ejector characterized in that a discharge valve 25 is formed by an inward flange 17 provided at an intermediate portion of a connecting member.