JPS5898683A - Pump for liquid dividing vessel - Google Patents

Abstract

PURPOSE:To facilitate the compression restoring operation of the operating part of the pump by a method wherein small diametral short cylindrical parts are provided at both ends of the operating part of the pump. CONSTITUTION:Air in the liquid dividing vessel A is forcibly discharged by the pump B by operating the pump B with a hose, of which tip end is inserted deeply into a large vessel 17, then, the inside of the vessel A is evacuated and the liquid is sucked into the large vessel 17. Subsequently, when the pump B is reversed and is operated under a condition that the tip end of a suction and discharge hose 16 is inserted into a small tank, atmosphere is forced into the liquid dividing vessel A and the innner pressure thereof is increased, thereby pushing out the liquid therein from the hose and supplying it into the small tank.

Description

Detailed Description of the Invention This invention pumps out a liquid such as kerosene from a large container and pours it into a small tank or small container such as an kerosene stove. It is a bellows cylinder type that can be compressed and restored, and the air is forced out to create a negative pressure inside the container and liquid from a large container is sucked in. For small liquids, air is forced into the container and the liquid is pushed out. This invention relates to an improvement of a simple pump equipped with a pump section.

Conventionally, there are two types of pumps of this kind: a type in which two types, an air supply pump and an exhaust pump', are incorporated into a container for handling small liquids, and a type in which a single pump is incorporated for both air supply and exhaust.

In the case of the latter type of pump that uses both air supply and exhaust, the direction of the pump is changed (switched) between when supplying air and when exhausting air.

By the way, the latter combined air supply/exhaust pump does not have a grip part because it is necessary to change the direction as described above, and therefore, it is difficult to compress and restore the pump part made of a bellows tube.

The present invention solves the conventional drawbacks of the latter type of pump, and its purpose is to provide a pump in which the pump operating section can be easily compressed and restored.

The structure of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, A is a container for small portions, and B is a pump of the present invention.

Pump B has short cylinder parts 2a and 2b of small diameter formed at both ends of a pump operating part 1 made of a bellows cylinder that can be compressed and restored.

There are check valves 3a and 3b inside the short cylindrical parts 2a and 2b, and both check valves are oriented in the same direction with respect to the air flow.

The illustrated check valves 3a and 3b are disassembled as shown in FIG. 2, and are passed through a fixing hole 7, and the claw pieces 6 are hooked to both ends of the elongated hole, so that the valve plate 4 can swing freely. 8 indicates the valve seat.

Further, this check valve is supported by press fitting into the short cylindrical portions 2a and 2b.

A grip tube 9 is attached to the short tube portion 2a at one end (-upper end) of the pump operating section 1, and a short tube g2b at the other end (lower end) is attached to the pump installation port 10 of the container A for small liquid portions. When the direction of the pump is reversed, the short cylinder part 2a at one end (upper end) is attached to the pump attachment port 10, and the grip cylinder 9 is attached to the short cylinder part 2b at the other end (lower end).

A cap 12 having a small cylindrical part 11 for attaching the pump protruding from the top wall is screwed onto the pump mounting opening 10 of the container A, and this small cylindrical part communicates with the inside of the cap.

Furthermore, the grip m9 has a structure that is screwed onto the short tube part. Reference numeral 13 indicates a male thread formed in the rear half of the short cylinder portions 2a and 2b, and 14 indicates a female thread formed in the grip cylinder 9.0 This invention has the structure as described above, and this pump B is oriented as shown in FIG. The small liquid portion is assembled into the container B, and as shown in FIG. By inserting the liquid deeply into the container and activating the pump, the pump will forcibly expel the air inside the container, create a negative pressure inside the container, and suck the liquid in the large container, and then turn the pump in the opposite direction. When the pump is operated with the end of the suction/discharge hose inserted into the small tank (or small container), the small liquid portion is forced into the container by outside air, which increases the internal pressure and pushes the liquid in the container out of the hose, causing the liquid to flow into the small tank ( or small containers).

As described above, according to the present invention, one pump can be used for both air supply and exhaust by changing the mounting direction, and a grip tube can be attached to either end of the pump operating section. It has the advantage that it can be installed and the compression/decompression insertion of the pump operating part is extremely easy.

If you want to keep the pressure inside the container at normal pressure during pump operation, you can remove the pump or loosen the cap 12. Also, by making the check valves 3a and 3b of the shape shown in the figure, you can use a short cylinder. A horizontally long hole 18 corresponding to the horizontally long hole 7 in the valve seat tube 5 is formed in the peripheral wall of the portions 2a and 2b, and a small cylindrical hole 18 is formed in the cap 12 for attaching the pump to the container A. If a horizontally long hole 19 is formed in 11 to match the long hole, the horizontally long holes 18 and 19 will be made to be mismatched when the pump is in operation. allows communication between the inside of the container and the outside air.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway side view of the main part of an example of a liquid container incorporating a pump;
Figure 2 is an exploded perspective view of an example of the check valve of the same pump as above;
The figure is a partially cutaway side view of the entire device showing the state of liquid subdivision. B... Pump, 1... Pump operating section, 2a, 2
b...Short cylinder part, 3a, 3b...Check valve, 9...Grip tube, 10...Pump installation port of container A for small liquid portion, 12
... Pump mounting cap patent applicant Tadashi Saito Hodo Agent Kama 1) Text 2 Written amendment (
Voluntary) February 4, 1980 Haruki Shimada, Commissioner of the Japan Patent Office 1, Indication of the case 1981 Permanent Application No. 196695 2, Name of Sabimei Liquid small portion is container pump 3, Relationship with the person making the amendment case Patent applicant address: 1 name (8 lines), 2 Higashibojima, Minoh City, Osaka Prefecture
Masayasu Saito 4, Agent 5゜Showa Month, Day (Delivery date) 6, Number of inventions increased by amendment Contents of the amendment 1, The column for the name of the invention in the application and the specification was changed to “Liquid small portion is a pump” ” and correct it. 2 Amend the claims as shown in the attached sheet. a Amend Figure 1 of the drawing as shown in the attached sheet. Claims: A pump operating part made of a bellows cylinder that can be compressed and decompressed is provided with short cylinder parts with a small diameter at both ends, check valves facing the same direction are provided in both the short cylinder parts, and one of the short cylinder parts is provided with a check valve facing the same direction. The grip tube can be removed and attached freely, and the other short ff! A liquid pump characterized in that the J section is detachable from the liquid pump mounting port of the liquid container.

Claims (1)

[Claims] A pump operating part made of a bellows cylinder that can be compressed and restored is provided with short cylinders S of small diameter at both ends, check valves facing the same direction are provided in both short cylinder parts, and a grip cylinder is provided in one of the short cylinder parts. A pump for a small liquid container, characterized in that the pump is removably attached and the other short cylinder part can be attached to and detached from the pump installation opening of the liquid container.