SU17835A1 - Aspirator - Google Patents

Description

The invention relates to devices for suction of a sample of gas, acting by assisting dr gi; glasses, alternately descending in a liquid vessel and supply distributor. In the present invention, the role of a distributor is performed by two tees, the horizontal branches of which are articulated, with the help of rubber tubes, with two branches of the tee, the third branch of which is connected with a conventional device; For alternate clamping of rubber tubes, horizontal branches of the tees are provided with a elbow clip. In order to indicate the degree of dilution of air sucked into the aspirator, 1 raduirovannye tubes were used, immersed in a vessel and attached to the vertical branches of the first two tees.

In the drawing of FIG. 1 shows a front view of an aspirator with partial pj spew; FIG. 2 - top view on thebes. 1 of FIG. 3 is a view of the aspirator in working condition; FIG. an aspirator connected to the switch and the absorber; FIG. 5, view from above; FIG. 6-front view pointing

the degree of dilution; FIG. 7 is a top view of a simplified switch.

The case of the proposed aspirator is a thin-walled wooden or plywood box with a protrusion in the upper part, covered from the inside with white tin, melted in joints and covered with paint dp waterproof and to protect against rust. The protrusion P (Fig. 1) divides the box into two compartments in which the vessels A and B are installed, resting on the projections h in the bottom of the box. Cover E box. when serving as a table, it has four legs k in the inner corners, which enter into the corners of the drawer when it is closed. When working in an empty crate, water is poured to a level located 8–10 centimeters below the sides. In the compartments for vessels, yo of one of the side walls of the box, there are 7-shaped tubes (brass or red copper) a and b, which are fastened with tabs to the wall in such a way that the whole tube can rotate around a fixed branch. In the off-line position, the tube is retracted to the wall of the box, giving space to condemnations. In the working position, the free branches of the tubes are retracted

in the middle. Above the tubes, bottoms upwards, vessels are installed, which play the role of gas holders. In the middle of the lining P of the setting, a threaded coupling M is threaded into which the iron rod JC is screwed in, and the rocker N is rolled to it with roll: blocks g along the edges. Rod II is attached to the inner side of the cover table jt. The vessels behind the bows of the rire are connected with a flexible bond (rope, cord) with each other through the blocks of the rocker arm so that when one vessel is lowered into the lower position, the other vessel will be raised to its highest position. If a raised vessel (Fig. 3) is pressed by any weight Q, it will be lowered, squeezing the air below it through tube a, outwards, while vessel B will rise, and a vacuum will be created below it outside, through the tube in, will flow under the vessel. After some time, the vessels will exchange positions: one will be with the load at the bottom, the other at the top. Transferring the load Q from the vessel A to the vessel B, again causes air to be sucked through the tube a and under the vessel A and out of the vessel B through the tube B, so that the suction goes in one direction (through the absorber) between the outer ends of the tubes a and e and an absorber (Fig. 3) is installed switching device C of the next device. A rubber tube extending from the absorber is connected to a tee t, the other two ends of which are connected to tees " j and " 2, further connected to the outer ends of the tubes and and. To the free ends of the tees 1 and y are attached curved glass graduated tubes Oi, the free ends of which are lowered into vessel V. The water is poured into the latter so that the ends of the tubes are several millimeters submerged into it. Vessel F with a rigid bulkhead t, not reaching the bottom, is divided into two compartments. If now the rubber tube between the tees of that switch branch, which goes under elevated vessel F, is clamped and put onto vessel A, the air from under vessel F through pipe Oi, meanwhile, in tube O, the water will rise to some level corresponding to vacuum under the second vessel B. Thanks to such a hydraulic valve in the tube Oa, the air under the rising vessel B will flow through the absorber. When the descending vessel A reaches the end and the air suction stops, release the clamped rubber tube to intercept the parallel pipe in another branch and rearrange the load: air suction through the absorber will continue, etc. For switching to the wooden plank C there is a wire crank clamp gf At that, the knees of the waist are located in mutually perpendicular, pendicular planes, so that the rubber tubes passing under the knees are: one clamped and the other open. With: a rotate of the clamp at 90 °, the opposite is obtained: the first opens and the second holds. To secure the position of the clamping levers, the levers are attached to the hooks ends f. Vacuum, as well as the rate of suction, is determined by the weight of the laid load n fixed in millimeters of water column, marked by the level: water in graded tubes O. The residual water level in the tube determines the vacuum under the vessel, which is necessary to overcome the resistance of the absorber. The difference in these levels indicates the working vacuum. For conventional analyzes, the simpler switch with the four-stage clamp shown in FIG. 7. In the case of analyzes for which a sufficient air volume of up to 10 liters is possible, it is possible to suck this amount of air under the vessel; pass it through the absorber directly (without a switch) under the second vessel, from where the gas is released back under the first vessel, and so on, until the end of the absorption. The amount of air passed by the aspirator is determined by the capacity of the vessel raised to failure and the number of switches. The vessels are graduated in liters, which makes it possible to determine the volume of leaked air at a fractional number of switchings. Depending on the degree of residual vacuum under the vessel, appropriate corrections are made.

The subject of the patent.

1. Aspirator, consisting of two two-shoulders suspended from the arm; tipped vessels and V-shaped gas pipes to it, characterized by using two tees n and P2 as the distribution device for the gas sucked in by two rubber branches with two branches of the tee t, a third branch of which is connected by an absorbing device, and provided with a wire elbow clip for alternately clamping rubber tubes.

2. The form of implementation of the device indicated in p. 1, which is associated with the application of tees and graduated tubes Oi and 02 attached to vertical branches of tees immersed in vessel F and serving as indicators of the degree of vacuum of air sucked into the aspirator.

FIG. one

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FIG. 3

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FIG. four

FIG. 6