SU703714A1

SU703714A1 - Check valve

Info

Publication number: SU703714A1
Application number: SU762420852A
Authority: SU
Inventors: Леон Ильич Махарадзе
Original assignee: Институт Горной Механики Им.Г.А.Цулукидзе Ан Грузинской Сср
Priority date: 1976-11-15
Filing date: 1976-11-15
Publication date: 1979-12-15

Description

(54) ОБРАТНЫЙ КЛАПАН(54) CHECK VALVE

1one

Изобретение относитс к арматуростроению и может быть использовано в трубопроводных магистрал х гидравлических систем .This invention relates to a valve industry and can be used in pipeline lines of hydraulic systems.

Известны обратные клапаны с демпфирующим устройством, обеспечивающим безударное открытие и закрытие зацорного органа 1.Known check valves with a damping device, providing a shock-free opening and closing of the locking element 1.

Известен также обратный клапан, в корпусе которого установлен поворотный запорный орган, св занный шарнирно-рычажной СВЯЗЬЮ со щтоком цилиндра гидротормоза Z.Also known is a check valve, in the case of which a rotary closure member is installed, which is connected by a hinged-lever link with a cylinder rod of a hydraulic brake Z.

Недостатком известных обратных клапанов вл етс то, что гидротормоз не обеспечивает эффективного торможени запорного органа в последние моменты закрыти и открыти клапана.A disadvantage of the known check valves is that the hydraulic brake does not effectively stop the valve in the last moments of closing and opening the valve.

Целью изобретени вл етс повышение эффективности демпфировани .The aim of the invention is to increase the efficiency of damping.

Цель достигаетс тем, что гидротормоз клапана снабжен дополнительным цилиндром , В котором установлены два поршн с общим штоком, жестко св занным со штоком ОСНОВНОГО цилиндра гидротормоза, причем В дополнительном цилиндре выполненоThe goal is achieved by the fact that the hydraulic brake of the valve is equipped with an additional cylinder, in which two pistons are installed with a common rod rigidly connected to the rod of the MAIN cylinder of the hydraulic brake, and moreover, in the additional cylinder

окно, сообщающее полости основного и дополнительного цилиндров и последовательно перекрываемое поршн ми дополнительного цилиндра.a window telling the cavities of the main and additional cylinders and successively overlapped by the pistons of the additional cylinder.

На чертеже показан обратный клапан, разрез.The drawing shows a check valve, a section.

В корпусе 1 с крышкой 2 установлен поворотный запорный орган - диск 3, который посредством рычагов 4 и 5, щарниров 6 и 7 св зан со штоком 8 и поршнем 9 основного цилиндра 10 гидротормоза. Параллельно основному цилиндру 10 на крышке 2 смонтирован дополнительный цилиндр 11 с окном 12, сообщающим полости основного 10 и дополнительного 11 цилиндров. ВIn the housing 1 with a lid 2 there is a rotary locking member — a disk 3, which is connected by means of the levers 4 and 5, the hinges 6 and 7 to the rod 8 and the piston 9 of the main hydraulic cylinder 10. Parallel to the main cylinder 10, an additional cylinder 11 is mounted on the lid 2 with a window 12 that communicates the cavities of the main 10 and the additional 11 cylinders. AT

Claims

additional cylinder 11 is installed pistons 13 and 14 with a common rod 15 rigidly connected with the rod 8 of the main cylinder 10 of the hydraulic brake. The brake is also equipped with an attached chamber 16 for bypassing a part of the brake fluid from cylinders 10 and 11. A lock is installed on piston 9 In the form of a spring-loaded ball 17 interacting with a recess 18 in the wall of the main cylinder 10. The damping process in the valve is as follows. When the valve is closed, the pistol 13 closes the window 12, which communicates the cavity of the main cylinder 10 with the chamber 16. At the time of the opening, the rods 8 and 15 of the main 10 and additional 11 cylinders of the hydraulic brake start to move upwards simultaneously with the locking disk 3. In this case, the piston 13 rigidly connected with the rod 15 opens a window 12, and the speed of movement of the locking disk 3 will increase until the window 12 is completely Open. In the final stage of opening the valve, the opening section of the window 12 is reduced again by closing it with a hole 14 which leads to a decrease in brake fluid flow through the window 12 and, consequently, to slowing down the movement of the piston 9 and the associated brush 8 and the locking disk 3. When the valve is fully opened, the piston 9 reaches a recess 18 in the wall of the cylinder 10 and a ball 17 fix This position ensures the stability of the position of the locking disc 3 when the pressure pulses in the valve cavity. When the valve is closed by throttling the brake fluid in the window, the locking disk moves with acceleration in the initial part of the movement and deceleration at the end of the closing before the disk is seated on the sealing surface of the seat. Claims of Invention The check valve, in the case of which a rotary closure member is installed, is connected by a hinged-lever link to the hydraulic brake cylinder rod, characterized in that, in order to increase the damping efficiency, the hydraulic brake is equipped with an additional cylinder in which two valves are installed with a common a rod rigidly connected with the main cylinder cylinder of a hydraulic brake; moreover, a window is made in the additional cylinder telling the cavities of the axial and additional cylinders and sequentially overlapping pores additional mi cylinder. Sources of information taken into account in the examination 1. US patent number 3817278, cl. 137-527, 1974.

2. US patent number 3942551, cl. 137-514, 1976.