JPS58184359A - Pressure tank device for motor-operated pump - Google Patents

Abstract

PURPOSE:To easily install and remove a gasket and a body to be mounted to and from a pressure tank body, by constituting a pressure tank device for motor-operated pump such that the body to be mounted is positioned outside the pressure tank body with the gasket interposed therebetween. CONSTITUTION:By screwing second screw members 11 and 12 in first screw members 9 and 10,deformed parts 8b1 and 8c1 engage a pressure tank body 1, and as soon as a flange 5 and a gasket 8 are secured to the tank body 1, bored- through holes 1Ac and 1Ad are sealed with projections 8a and 8c. Further, with the second screw members 11 and 12 slightly unscrewed from the first screw members 9 and 10, the deformed parts 8b1 and 8c1 restore to the original state, and this permits the removal of the projections 8b and 8c through the bored- through holes 1Ac and 1Ad, namely removal of the gasket from the tank body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a pressure tank device for an electric pump in which an object to be attached is mounted by sandwiching an outer gasket of a pressure tank body.

A conventional device of this type will be explained with reference to FIGS. 1 and 2. In the figure, 1 indicates the plane part IAa and the through hole 1Ab,
A cylindrical portion IA having IAc and lAd, and a cylindrical portion IA.
The pressure tank body consists of a bottom plate IB watertightly welded to the lower end opening of the pressure tank, 2.8 is a through hole IAC
(The first screw member consists of a cap nut that is arranged concentrically and corresponds to I, and is watertightly welded to the inner side of the cylindrical part IA. A flat gasket having a through hole 4a #4b14e, 5 having a single screw hole 5a corresponding to the through hole 4a,
The flange has through holes 4b and 40t and corresponding through holes 5b and 5c, and a piping joint (not shown) is screwed into the through screw hole 5a. 6 and 7 are through holes 5
b, 4b, IAO and through hole 50, 4c
, The tip that penetrates correspondingly with lAd is a cap nut 2, 8)
A second screw member consisting of a corresponding bolt is used to connect the gasket 4 and 7 langes 5 to the pressure tank body 1? This is for fixing.

In the device X having such a configuration, productivity is extremely poor because it is necessary to weld the entire circumference of the first screw members 2 and 8 to the pressure tank body 1). If there was a welding defect, it could be repaired, but it would have disadvantages such as FG LX.

This invention has been accomplished in order to overcome the deficiencies of the prior art as described above, and one embodiment of the invention will be explained in detail below with reference to FIGS. 8 and 4. A first screw member 9.10 consisting of a nut having a centroidal through hole 8a and a tapered portion 9a l 10& at the tip is correspondingly molded.
Projections Bb and B that fit into the through holes IAc and lAd
e, and the protruding surfaces of the protrusions Bb and Be. 11.12
through hole 5b and bolt, 10 to flange 5 +14
By pulling 11t, the entire outer periphery of the protrusions Bb and Be is stiffened to form a erect deformed portion 8b+, 801, and the inner part t111 of the pressure tank body 1 is engaged. Note that explanations of other symbols are the same as those of FIGS. 1 and 2, and will therefore be omitted.

The structure configured in this way is shown in Figure 4.
As shown, when the second screw member 11.12 & the first screw member 9.10t are screwed together, the deformed portions 8b+ and 801 engage with the pressure tank body 1, and the 7 langes 5 and the gasket 8 are attached to the tank body 1. At the same time as fixed, one through hole IAc
, lAd are sealed with protrusions Bb, gc. Also,
First threaded member 9.1 (opposite second threaded member 11)
．． When the screws 12 are loosened, the deformed parts 8b1 and 3c+ disappear, so the protrusions 8b180 are removed from the 1 through holes IAc and lAd.
That is, one gasket 8 can be easily taken out from the tank body 1.

In the above embodiment, the first threaded member is a nut and the second threaded member is a bolt, but it goes without saying that they may be opposite to each other. 1 gasket made of
□''j: - Fit the formed protrusion into the through hole formed in the pressure tank main body, and insert the second screw member that engages with the attached member disposed outside the gasket into the first screw member. When the screw member 1 is screwed together, the deformed portion formed around the entire circumference due to the compression of the protrusion is press-fitted to the inside of the pressure tank body, so that the gasket body and the plated part are connected to the pressure tank body. The body can be easily attached and detached. Therefore, not only is production easy and productivity is improved, but if a seal failure occurs at the failed part of the attached body, it can be easily repaired by replacing the gasket. This has the effect of providing an extremely excellent pressure tank device for electric pumps.

[Brief explanation of the drawing]

1 and 2 are diagrams showing a conventional electric pump pressure tank device, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a detailed view of the member to which it is attached. Further, FIGS. 8 and 4 are views showing one embodiment of the present invention, with FIG. 8 being a detailed view of the gasket, and FIG. 4 being a sectional view of the main part. In the figure, 1 is the pressure tank main body, lAc and lAd are through holes, 5 is the object to be attached, 8 is a gasket, 8b is a protrusion, 8b1 is a deformed part, 8C is a protrusion, 801 is a deformed part, 9. 10 is a first screw member; 11.
12 is a second screw member. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] a pressure tank body having a through hole, a cylindrical protrusion that fits into the through hole, and an outside of the pressure tank body 1IIIf;
A rubber gasket disposed in this manner, a first screw member molded on the protrusion, an attached body disposed to cooperate with the pressure tank and sandwich the gasket, and engaged with the attached body. A pressure tank for an electric pump, further comprising a second screw member that is screwed into the first screw member and deforms the protrusion inside the tank body over the entire circumference and engages with the pressure tank body. Device.