DE52997C - Gas pressure pump - Google Patents

Description

IMPERIAL

PATENT OFFICE.

Gas pressure pump.

The present invention relates to those known by the name of air compressors Compressors, which, however, are also used for compressing the most varied of gaseous or air-shaped Body can be used.

Fig. 1 shows a longitudinal section through the cylinder of a double-acting air compressor with the piston and its rods in view, Fig. 2 shows a cross section along line xx of Fig. 1, Fig. 3 shows a similar section through the piston along line js-y 4, and FIG. 4 shows a similar section along the line \ - \ of FIG. 3, FIG. 5 shows a part of a ring valve in view.

A is the cylinder with hollow walls to form a water jacket for flushing with cooling water and with hollow lids. Inside each lid there is a partial wall α , attached (Fig. 2), which divides the interior of the lid into two spaces b and c , of which b is a valve chamber for the outlet valves d, and c is a container for the circulation of that which is used to cool the cylinder Water forms. The valve chambers b of both covers are connected through a longitudinal channel b ^l arranged outside the cylinder. in connection with each other, to which channel at & ² an outflow pipe is screwed. The outlet valves mounted in their seats d ² in the cylinder lids open outwards and establish the connection between the inside of the cylinder and the chambers b .

B is the hollow piston, reinforced by radial ribs e , which is drawn onto a hollow central tube C ; the latter is connected to the interior of the piston. This tube can form a piston rod; in any case, however, it forms the feed pipe for the air to be compressed or another gaseous body and is passed through a stuffing box g inserted into one of the cylinder covers. The tube referred to aufsen opposite end may open to comprimirende air or the gaseous body into the open air or in a cold air container or in a feed line for the ". In the illustrated arrangement, the said tube C opposite piston side with a solid, by means of a stuffing box is h provided in the other cylinder cover going piston rod D , which connects the piston with the drive motor.

■ The standing with the pipe C in conjunction cavity of the piston is opened by the valves EE and closed, whereby alternately a connection between the supply tube C and the cylinder is made on both sides of the piston, while, otherwise called cavity remains closed. An annular channel i provided in each piston wall accommodates the ring valve E. . Both ring valves are apparent from T-shaped cross-section, as shown in Figure 4; so that an annular Stegj and one with two Flantschen ^ ¹ ^ ² Sided ring is formed; FlanlschJ ¹ forms a valve seat surface on the inner side of the web and flange j ² a seat surface on the outer side of the web, which valve seat surfaces rest against seats which are formed by the piston surfaces lying immediately next to both sides of the annular channel i. The inwardly facing surface of the channel is turned off and forms a guide Z for the annular valve webs, just as the inner surface of the latter is turned off in order to properly rest against the cylindrical guide formed in this way. The outer surface of the web j protrudes considerably from the outer surface of the channel i

Claims (2)

at /, so that there is an unobstructed connection between the cylinder and the inside of the piston when the valve is open. At certain distances from one another, the web is provided with ribs j8, as can be seen from FIGS. 3, 4 and 5, in order to form reinforcements at those points where the slots ^ '4 are provided in the web. The slots lie in the direction of the piston height and go through the former pins m, which are inserted into holes arranged radially in the piston. The latter intersect the channels i at right angles. These pins are intended to prevent the ring valves from falling out of the piston and limit their movement when they are opened. The holes intended to receive the pins and the pins themselves are conical in the arrangement shown, so that the latter are held in place by simply driving them into the holes. Recesses in the piston body, which serve to accommodate the packing rings η, in order to cover the heads or outer ends of the said pins, are connected to the named holes. In order to drive out the pins m after removing the packing rings when the valves E are removed, holes ρ are made near the edge of the piston, which cross the pin holes and are closed at their outer ends by screw plugs q to avoid any connection with the interior of the piston. If, however, the pins m are to be removed before the valves are removed, the plugs are unscrewed and a wedge is driven into the holes from the outside, which loosens and drives the pins m. The compressor works as follows: During the piston stroke in one direction, one inlet valve E is opened and the other closed, while the outlet valves d at one end of the cylinder are closed and those at the other end of the cylinder are opened. Air is sucked into the cylinder from one side of the piston through the hollow piston rod "C" serving as a supply tube, the interior of the piston and valve E, and the air is compressed on the other side of the piston, closed by valve E, and pressed through the open outlet valves d. This operation can be seen from Fig. 1, where the piston moves to the left. The valve E on the right-hand side of the piston is open and air just enters the cylinder from this side, while at the same time the valves d on the right-hand side End of the cylinder are closed, so that the air to the left of the piston is compressed, since valve E is closed on this side and the air compressed in this way is pushed out at this end through the valves d which are open at the left end of the cylinder Inlet valves of the compressor equipped with the device described can be a very rapid one have a fairly large weight, they can open and close very quickly at the beginning of the piston stroke, owing to their moment of inertia, without having to wait for the air pressure necessary to open the valves to be reached. The hollow piston rod C, in other words, the inlet pipe connected to the interior of the piston, forms a contracted inlet for the extraction of cold air from the surrounding area; location of the building in which the air compressor is installed; In addition, by eliminating the inlet valves in the cylinder cover, it is possible to provide a larger part of the head sides of the cylinder with a water jacket. Patent claims: 1. An air or gas pressure pump, characterized by the combination of the hollow piston rod (C) for supplying the air or gas from the outside with the hollow piston (B), which has annular valve seats and openings (i) on both sides the latter is equipped with opening and closing ring-shaped valves (E) , and with the outlet valves / ij in the cylinder lids divided into two chambers (b and c) , one of which (b) is provided with the outlet valves, while the other is for Water cooling is used. 2. On the pressure pump designated under 1. the construction of the ring valves (E) on the two piston faces, marked by a. Web (j) with two flanges (J ¹ J ² ), one side of the web (j) rests against one wall (I) of the piston opening, while the other side of the web protrudes from the opposite wall, while the web with Breakthroughs (j *) are equipped to receive guide pins (m) , which can be removed through openings (p) in the piston end walls closed by plugs q. For this purpose ι sheet of drawings.