RU2795546C1 - Automatic water drain device - Google Patents

Abstract

FIELD: pneumohydraulic devices.

SUBSTANCE: invention allows you to adjust the level of opening of the water drain from the receiver. The automatic water drain device (1) includes a body (2), a top cover (3) with a pipe (4), a bottom cover (5) with a pipe (6), a float consisting of an upper section (7) and a lower section (8), as well as a valve, which includes a stopcock body (9), a jet fixed in it (10) and a hollow stem (11) with a tip (12) sealed in the lower part. The top section (7) is mounted on the top of the stem (11) using, for example, a bolted connection (13). Also, the upper part of the rod (11) contains a working area in which holes (14) are made and with the help of which it is possible to reinstall the upper section (7) of the float. The bottom section (8) is mounted on the bottom of the stem (11) also with bolts. The stem (11) itself is fixed in the body (2) with the help of a bushing (15) with a through hole and a centering ring (16). The sleeve (15) is screwed to the branch pipe (4) of the top cover (3) and locked with a lock nut (17). The through hole connects the cavity of the rod (11) with the internal cavity of the branch pipe (4). The centring ring (16) has holes for the passage of liquid and is rigidly fixed on the branch pipe (6) of the bottom cover (5).

EFFECT: increase in the efficiency of the device for automatically draining water from the receiver by controlling the level of opening of the drain.

1 cl, 2 dwg

Description

The technical solution relates to pneumohydraulic devices and allows you to adjust the level of opening of the water drain from the receiver.

Known mechanical float steam traps for compressed air systems of various manufacturers, for example, ADCA FA16SS float steam traps, FLT17 steam traps, PN16 float steam trap containing a float and a valve controlled by this float. When the float rises to the upper level, the valve operates to open the drain hole, and when it drops to the lower level, it closes it so that compressed air does not enter the drain.

The main disadvantage of these devices is the inability to control the level of opening of the drain hole.

Known automatic membrane type valve with a telescopic float mechanism (patent RU 210282, IPC A01K 7/04, E03D 1/33, E03D 1/34, publ. 04/05/2022), consisting of two components - an automatic membrane type valve and a telescopic float mechanism. The valve body ensures the operation of the membrane-valve mechanism and connection to the main pipeline. The membrane-valve mechanism is formed from a rod, on which a seat, a membrane, and a support washer are rigidly fixed. The structure is secured with a washer and nut. The membrane-valve mechanism is installed in the cover through the sleeve. To ensure the return of the structure to its original position, a spring, a movable washer and a compression washer are installed on the rod.

The disadvantage of this solution is that this valve works only for automatic closing and cannot be used if it is necessary to automatically drain the liquid from the tank.

A device for signaling the accumulation of water in an oil reservoir is known (patent CN207906835, IPC F16N 29/04, publ. 09/25/2018), installed below the oil reservoir and containing a pipe for communication with the upper part of the indicator tube, an inlet pipe of the lubricating oil reservoir for communication pipes with the bottom of the indicator tube. The float switch is connected to the solenoid valve via a relay. The float switch rises with the water level. When the liquid level reaches a certain height, the float switch turns on to trigger the alarm device; at the same time, a relay connected to the float switch controls the solenoid valve to open to release water from the drain pipe. Then the accumulated water in the lubricating oil tank is efficiently discharged.

The disadvantage of this solution is the need to use electrical energy, respectively, in the absence of electricity, the valve will not work.

The closest analogue is a float steam trap (patent RU2104441, IPC F16T 1/20, publ. 02/10/1998), contains a housing with inlet and outlet nozzles, a main float located in the housing and an auxiliary float fixedly mounted on the rod, located at a distance of up to 1 cm from the lower guide, while the main float is located on the rod from the auxiliary float at a distance of the upper and lower levels of liquid condensate to the thrust flange fixed on the rod.

The main disadvantage of the device is the need to re-equip the tank (receiver) itself, which excludes the possibility of using it for operating receivers, as well as the inability to control the level of opening of the drain hole.

The technical result of the proposed solution is to increase the efficiency of the device for automatically draining water from the receiver.

The technical result is achieved due to the fact that in the automatic water drain device containing a body with pipes, a float placed in the body, as well as an outlet valve, the body is equipped with top and bottom covers, in which pipes are installed, while the pipe of the top cover can be connected to receiver outlet pipe connected to the air line, and the lower cover pipe can be connected to the receiver water drain pipe through the outlet valve, which includes the stopcock body, a jet fixed in it and a hollow stem with a tip in the lower part, mounted on the central axis devices with the ability to move along this axis to close and open the jet hole, the upper end of the rod is movably connected to the hole of the sleeve, fixed, in turn, on the branch pipe of the top cover, and the cavity of the rod is connected through the hole of the sleeve with the internal cavity of the pipe of the top cover, and the lower a part of the stem is movably connected to a centering ring having holes for the passage of liquid and rigidly mounted on the branch pipe of the lower cover, while the float consists of two separate sections, the lower section of the float is fixed on the lower part of the stem, and the upper section is mounted on the upper part of the stem with the possibility of its reinstallation along the stem axis.

The essence of the technical solution is illustrated by the following drawings:

- in Fig. 1 shows a sectional view of the automatic water drain device;

- no figs. 2 shows a diagram of connecting the device to the receiver.

The automatic water drain device (1) includes a body (2), a top cover (3) with a pipe (4), a bottom cover (5) with a pipe (6), a float consisting of an upper section (7) and a lower section (8), as well as a valve, which includes a stopcock body (9), a jet fixed in it (10) and a hollow stem (11) with a tip (12) sealed in the lower part. The top section (7) is mounted on the top of the stem (11) using, for example, a bolted connection (13). Also, the upper part of the rod (11) contains a working area in which holes (14) are made and with the help of which it is possible to reinstall the upper section (7) of the float. The bottom section (8) is mounted on the bottom of the stem (11) also with bolts. The stem (11) itself is fixed in the body (2) with the help of a bushing (15) with a through hole and a centering ring (16). The bushing (15) is fixed by means of a threaded connection on the branch pipe (4) of the upper cover (3) and locked with a lock nut. The through hole connects the cavity of the rod (11) with the internal cavity of the branch pipe (4). The centering ring (16) has holes for the passage of liquid and is rigidly fixed on the branch pipe (6) of the bottom cover (5).

суммарного объема секций. Объем верхней секции (7) в сумме с объемом нижней секции (8) должен быть выше объема необходимого для преодоления усилия открытия клапана и общего веса поплавка. Отверстия (14) для крепления верхней секции (7) на штоке (11) должны быть по всей длине рабочей зоны секции. Обечайка конструкции секции поплавка сварена своими торцами с загнутыми концами верхней и нижней части корпуса секций, что позволяет избежать их деформации в процессе изготовления. Диаметр и количество болтов крепления крышек согласно расчету (на чертеже не показаны).The volume of the lower section (8) of the float must ensure the buoyancy of the float, but be no more than

the total volume of sections. The volume of the upper section (7) plus the volume of the lower section (8) must be greater than the volume required to overcome the valve opening force and the total weight of the float. Holes (14) for mounting the upper section (7) on the rod (11) must be along the entire length of the working area of the section. The shell of the float section structure is welded with its ends to bent ends of the upper and lower parts of the sections body, which makes it possible to avoid their deformation during the manufacturing process. The diameter and number of bolts for fastening the covers according to the calculation (not shown in the drawing).

The device works as follows.

The device (1) is mounted on a detachable stand that allows you to remove and install covers at the workplace. After mounting the bottom cover (5) with the valve and installing the float by pouring water into the body (2), determine the closing level of the valve. Apply and mark this level on the body. Install the upper section (7) of the float so that the top of the cylindrical part is at an optimal distance below the air inlet to the receiver. The opening level of the valve at maximum working pressure must be below the top of the cylindrical part of the upper section (7) (if necessary, this can be achieved by changing the diameter of the jet drain hole). Install the top cover (3) with the sleeve (15). The device (1) is connected by a branch pipe (4) through a shut-off valve (17) to the outlet pipe of the receiver (18) connected to the working line with pressure Рmag, and the valve body (9) is connected to the drain pipeline. At the beginning of the drain pipe from the receiver, a main shut-off valve (19) is installed, a control valve for automatic draining (20) is installed between the valve inlet (9) and the valve outlet (19), and a valve is installed between the valve outlet (9) and the valve outlet (19). manual drain (21).

To drive the device (1) to the working position, the valves (17), (19) and (20) are opened, and the valve (21) is closed. Through the inlet of the receiver (18), air enters with water, which is separated by the receiver, gradually filling it. In parallel, the device (1) is filled in parallel through the valve. Water from the receiver enters the inlet in the tap (9), rises through the pipe (6) and fills the body cavity itself (2) through the holes of the centering ring (16). At the moment when the water rises to the set opening level, acting on both sections of the float, a pressure drop will occur and the valve will open, i.e. the stem (11) will move up by the amount of travel. Water is drained until the pressure balance is restored, when the stem (11) goes down and closes the valve. This will happen at the moment when the water reaches the closing level. Thus, the cycle is repeated automatically until the end of the workflow.

Claims (1)

An automatic water drain device comprising a body with pipes, a float placed in the body, and an outlet valve, characterized in that the body is equipped with top and bottom covers, in which pipes are installed, while the top cover pipe can be connected to the outlet pipe of the receiver connected with an air line, and the branch pipe of the lower cover can be connected to the receiver water drain pipe through the outlet valve, which includes the shut-off valve body, a jet fixed in it and a hollow stem with a tip in the lower part, mounted on the central axis of the device with the ability to move along this axis to close and open the jet hole, the upper end of the rod is movably connected to the hole of the sleeve, fixed, in turn, on the branch pipe of the top cover, and the cavity of the rod is connected through the hole of the sleeve with the internal cavity of the branch pipe of the top cover, and the lower part of the rod is movably connected to a centering ring having holes for the passage of fluid and rigidly mounted on the branch pipe of the lower cover, while the float consists of two separate sections, the lower section of the float is fixed on the lower part of the rod, and the upper section is installed on the upper part of the rod with the possibility of its reinstallation along the axis of the rod.

Images