US2648291A

US2648291A - Water purification unit

Info

Publication number: US2648291A
Application number: US119163A
Authority: US
Inventors: Clifford B Moller
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-10-01
Filing date: 1949-10-01
Publication date: 1953-08-11
Anticipated expiration: 1970-08-11

Description

Aug. 11,1953

C. B. MOLLER WATER PURIFICATION UNIT Filed Oct. 1, 1949 I0 is 3a ea a ea Inverzi'oai: OZIJfoddB.MOZZeIg Patented Aug. 11, 1953 UNITED STATES PATENT OFFICE WATER PURIFICATION UNIT Clifiord B. Moller, Boston, Mass.

Application October 1, 1949, Serial No. 119,163

2 Claims.

This invention relates to improvements in a water purification unit. Water purification systems of the type to which this improvement relates include pumping means for feeding hypochlorite or other water purification chemical in minute quantities and at a carefully regulated rate into the intake line of a pump which feeds the water from its source of supply. See for example the patent to Corydon 2,402,524. The chemical pumping unit is sometimes provided with an anti-siphon device to prevent the suction in the water line from drawing the chemical at a faster rate than that fixed by the operation of the chemical pump.

It is an object of my invention to provide with the anti-siphon device, means to permit priming the pump when the system is being started.

Various advantages of my improvements will be more readily apparent from the following description of a preferred embodiment thereof as illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the chemical pumping unit; and

Figure 2 is a vertical section taken on the plane indicated 22 in Figure 1.

The pump includes a casing In which may be made of metal. The head I2 is preferably made of neoprene or other material that will be resistant to the corrosion action of the chemical and the pumping diaphragm I4 is also made of neoprene. The diaphragm is operated by the reciprocal plunger IS, the stroke of which is carefully adjusted. The pumping chamber 18 has an inlet passage 20 and an outlet passage 22. The inlet nipple 24 has an inlet valve 26. The outlet nipple 28 is in communication with the passage 30 which is normally closed by a flexible diaphragm 32 which is fastened to the head I2 of the pump by the cover 34. A spring 36 is provided to move the diaphragm 32 in the direction to close the passage 30 and provide an antisiphon check valve. The spring 36 seats on a cup-shaped member 38 which is preferably molded to the outer side of the diaphragm 32. I provide a finger-grip member 40 which is connected to the cup-shaped spring seat 38 and which extends through an opening in the housing 42 for the spring. By manually pulling upon the finger grip 40 the diaphragm 32 may be pulled away from its seat and permit primin of the pump.

The chemical pumping unit is connected to a source of supply of the water purification chemical whereby the action of the, pump will draw the chemical into the inlet 24 through the passage 20 and into the pumping chamber l8. The chemical will be delivered on the pressure stroke through the passage 22 thereby moving the diaphragm 32 to open the entrance to the passage 30. The chemical will be delivered through the outlet passage 28. It will be understood that the outlet passage will be connected to the suction side of a water pump drawing water from a suitable reservoir. The chemical will be delivered to the water at a carefully regulated rate. Such a system is frequently used at summer camps and if the system stands idle for a long period of time the chemical pump will need to be primed. In such case, the water pump is started while the diaphragm 32 is pulled away from its seat at the entrance to the passage 30 by means of the finger-grip member 40. The suction in the water line will draw the chemical into the pumping chamber 18 and prime the pump. As soon as the pump has been primed, the finger grip 40 is released and the system operates in the usual manner.

I claim:

1. In a pump for feeding a water purification chemical, a casing having a pumping chamber, an outlet passage leadin from said pumping chamber, a second outlet passage in said casing adjacent said first passage and leading to the exterior of the casing, a diaphragm valve mounted to close both said outlet passages, spring means effective to hold such diaphragm valve in closed position during the intake stroke of the pump and adapted to yield and permit opening of the valve on the delivery stroke of the pump, and a finger grip attached to said diaphragm valve and extending to the exterior of said pump casing, whereby said finger grip may be pulled to open the diaphragm valve to permit priming of the pump.

2. In a pump for feeding a water purification chemical, a casing having a pumping chamber and a fiat valve seat, a delivery passage leading from said chamber to said valve seat, an outlet passage leading from said valve seat, a diaphragm mounted on said seat so as to cover the adjacent ends of said passages, a spring normally urging said diaphragm into engagement with said seat but yieldable on the delivery stroke of said pump to permit movement of said diaphragm so as to uncover said passages, and a finger grip attached to said diaphragm and extending to the exterior of said pump casing, whereby said diaphragm may be pulled away from said seat to permit priming of the pump.

CLIFFORD B. MOLLER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,990,635 Buttner Feb. 12, 1935 2,323,950 Wade July 13, 1943 2,402,524 Corydon June .18, 1946 2,427,441 Butts Sept. 16, 1947