SU1320582A1 - Steam trap for pneumatic systems - Google Patents

Abstract

Invention m. B. used in the brake system of the vehicle. The invention makes it possible to increase reliability and to ensure regulation of the time for removal of condensate. In the housing 1, an exhaust valve is placed in the form of a horizontally mounted three-stage spool 5 with the formation of two annular chambers 6 and 7 between stages 8, communicating the collecting cavity (P) 2 with outlets (BO) 4 of the housing 1. Between the end 12 of the spool 5 and The spring 1 is placed by the housing 1. To change the preload of the latter, a nut 14 is installed with through-the-turn verts 15. For adjusting the initial position of the spool 5 and ensuring manual drainage of the condensate in the nut 14 a movable pin 16 is placed on the thread When the receiver 3 is compressed with air m, the latter fills P 2 and chamber 6. Through the pressure regulator (RD) 11, air enters P 10 and acts on the spool 5, keeping it in the extreme right position all the way into the rod 16. In this case 4 are blocked by steps 8. Condensate accumulates in P 2 and chamber 6. When the pressure in receiver 3, corresponding to the upper limit, is reached, RD 11 is activated, pressure in P 10 drops to zero. Under the influence of the spring 13, the spool 5 begins to move to the left position. When chambers 6 and 7 coincide with BO 4, condensate is ejected. Further, at the leftmost position of the spool 5 BO 4, they overlap with steps 8. Chamber 7 communicates with P 2. After reaching pressure in receiver 3, corresponding to the lower limit, RD 11 is triggered. Air enters P 10, spool 5 moves to the far right position. 1 hp ff. 2 Il. (L hoo about 00 th rj fig. 1

Description

This invention relates to means for removing condensate from pneumatic systems, such as a vehicle braking system.

The purpose of the invention is to increase reliability.

FIG. 1 shows a steam trap, general view; in fig. 2 shows a steam trap at the position of the spool at the moment of condensate drainage.

The steam trap comprises a housing 1 with a precast cavity 2 connected to the receiver 3. In the lower part of the housing 1 there are outlet openings 4. In the housing 1 there is an exhaust valve in the form of a horizontally mounted three-step spool 5 with the formation of two annular chambers 6 and 7 between stages 8, communicating the cavity 2 with the outlets 4 in the extreme positions of the spool 5. Between the end 9 of the spool 5 and the walls of the housing 1 a control cavity 10 of the valve is formed. Cavity 10 is connected to pressure regulator 11 and a high pressure source. A spring 13 is placed between the end face 12 and the housing 1. A nut 14 with through holes 15 is installed to change the preload of the spring 13. To adjust the initial position of the spool 5 and ensure manual drainage of the condensate in the nut 14, a movable rod 16 is placed on the thread.

When the receiver 3 is filled with compressed air, it also fills cavity 2 and chamber 6 (Fig. 1). Through the pressure regulator 11, the compressed air enters the control cavity 10 and acts on the spool 5 keeping it in the extreme right position until it stops at the rod 16. At the same time, the outlet openings 4 are blocked by steps 8. Condensate accumulates in cavity 2 and chamber 6 When the pressure in the receiver 3, which corresponds to the upper limit, is reached, the pressure regulator 11 is activated, the pressure in cavity 10 drops to zero. Under the influence of the spring 13, the spool 5 begins to move to the left position. With

0

from 0

five

The coincidence of chambers 6 and 7 with holes 4 causes condensate to be emitted into the atmosphere. Further, with the leftmost position of the spool 5, the openings 4 overlap with steps 8. Chamber 7 communicates with cavity 2. After reaching pressure in receiver 3, corresponding to the lower limit, pressure regulator 11 is activated. Compressed air enters cavity 10, spool 5 moves to extreme right position. When the spool 5 is in the intermediate position, chambers 6 and 7 communicate with the openings 4 and condensate is ejected. In order to provide manual drainage of condensate from the receiver, for example, in the absence of air flow from it, it is necessary to screw in the rod 16, which, by moving, moves the spool 5 before communicating the chambers 6 and 7 with the openings 4.

Claims (2)

1. A trap for pneumatic systems, comprising a housing with an assembly cavity connected to the receiver, a spring-loaded exhaust valve with a control cavity connected to a high pressure source disposed in the lower part of the housing, characterized in that In order to increase reliability, the exhaust valve is made in the form of a horizontally mounted three-stage spool with the formation of two annular chambers between the steps that communicate the collecting cavity with the outlets in the extreme x valve positions, the control cavity of the valve is formed by one of the ends of the valve and the walls of the housing and connected to a high pressure source through an additionally installed pressure regulator, the valve spring is placed between the other end of the valve and the housing. 2. The steam trap of claim 1, characterized in that, in order to control the time of condensate drainage, it is provided with a means for changing the preload of the spring. FIG. 2