CN200985801Y - Plug-in mounting type pilot operated check valve - Google Patents

Abstract

The utility model discloses a cartridge hydraulic control one way valve comprising a valve body, a valve base and a valve core arranged in the valve cavity of the valve body, a liquid inlet and a liquid outlet communicated with the valve cavity and arranged on the valve body. Wherein, the valve cavity is a through cavity runs through the valve body from left to right, whose left and right ends are provided with adapters controlling the shoot, and the left end of the through cavity connects to an adapter base via an end sleeve which is provided with a guide hole connecting the valve cavity and the adapter base hole cavity; the valve base and the valve core are orderly from left to right covered on the piston pole in active cooperation way; the liquid inlet and outlet are respectively connected with the left side and right side valve cavity; the piston is mounted at the left end of the piston pole, and the piston poles between the piston and the valve base, the valve core and the end sleeve are respectively provided with pressure springs; and a round plate is fixed around the piston on the left end surface of the valve core. The strong point of the utility model is when in maintenance and installation, only need to discharge the entire string valve, thereby greatly simplifying the maintenance and installation work in the special circumstance of underground.

Description

Cartridge hydraulic control check valve

technical field

The utility model relates to a hydraulic one-way valve, in particular to a plug-in hydraulic control one-way valve.

Background technique

The hydraulic check valve is mostly used in the hydraulic support push circuit to block the rod cavity of the push jack to maintain the relative position of the hydraulic support and the slide plate. However, the structure of the hydraulic check valve used in the moving circuit of the hydraulic support is relatively complicated at present, which brings inconvenience to downhole maintenance and replacement.

Utility model content

The purpose of the utility model is to provide a plug-in hydraulic control check valve which is convenient for maintenance and replacement.

In order to achieve the above object, the utility model can take the following technical solutions:

The plug-in hydraulic control check valve described in the utility model includes a valve body, a valve seat and a valve core arranged in the valve cavity of the valve body, and an inlet and a valve connected to the valve cavity provided on the valve body. Liquid outlet; the valve cavity is a through cavity that runs through the valve body left and right; a joint with a control flow channel is provided at the left port of the through cavity, and a joint seat is connected to the right port through an end sleeve; The end sleeve is provided with a diversion hole connecting the valve cavity and the cavity of the joint seat; the valve seat and the valve core are fitted on the piston rod in a moving fit from left to right; the liquid inlet and outlet are respectively connected to the valve The valve cavity on the left side and the right side of the seat are connected; the piston is arranged at the left end of the piston rod, and a pressure spring is respectively set on the piston rod between the piston and the valve seat, and between the valve core and the end sleeve; A ring platform is arranged on the peripheral surface of the piston rod on the left end face.

In order to reduce the impact force of the piston rod on the valve core, a damping hole communicating with the control channel is opened on the valve body.

The utility model has the advantage that the valve seat and the valve core are fitted on the piston rod in a moving fit manner from left to right, and are placed on the piston rod between the piston and the valve seat, and between the valve core and the end sleeve respectively. The package is equipped with a pressure spring, so only the entire string valve needs to be disassembled during maintenance and installation, which greatly facilitates the maintenance and installation work in the specific environment of underground.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in the figure, the plug-in hydraulic control check valve described in the utility model includes a valve body 1, a valve seat 2 and a valve core 3 arranged in the valve cavity of the valve body 1, and a The inlet and outlet ports 4 and 5 connected with the valve cavity on 1; the valve cavity is a through cavity 6 that runs through the valve body 1 left and right; the left port of the through cavity 6 is provided with a control channel 7 The joint 8 is connected to the joint seat 10 through the end sleeve 9 at its right port; the diversion hole 12 connecting the valve cavity and the joint seat hole 11 is opened on the end sleeve 9; the valve seat 2, the valve core 3 From left to right, it is set on the piston rod 13 in a moving fit manner; the inlet and outlet ports 4 and 5 communicate with the left and right valve chambers of the valve seat 2 respectively; the piston 14 is arranged on the side of the piston rod 13 At the left end, pressure springs 15 and 16 are respectively set on the piston rod 13 between the piston 14 and the valve seat 2, and between the valve core 3 and the end sleeve 9; A ring platform 17 is provided. In order to reduce the impact force of the piston rod 13 on the valve core 3 , an orifice communicating with the control channel 7 is opened on the valve body 1 .

Claims (2)

1, a kind of plug-in hydraulic control one-way valve, it comprises valve body (1), is arranged on valve seat (2), the spool (3) in described valve body (1) valve pocket and is opened in the liquid inlet and outlet that communicates with valve pocket (4,5) on the valve body (1); It is characterized in that: described valve pocket runs through the cavity (6) of valve body (1) about being; Left port at described cavity (6) is provided with the joint (8) that has control runner (7), is connected with plinth (10) in its right output port by end cover (9); On described end cover (9), offer the pod apertures (12) that is communicated with valve pocket and plinth vestibule (11); Described valve seat (2), spool (3) are sleeved on the piston rod (13) in mode movingly from left to right successively; Described liquid inlet and outlet (4,5) communicates with valve seat (2) left side, right side valve pocket respectively; Piston (14) is arranged on the left part of described piston rod (13), is respectively installed with compression spring (15,16) on the piston rod (13) between piston (14) and the valve seat (2), between spool (3) and the end cover (9); Piston rod (13) side face that is positioned at spool (3) left side is provided with ring platform (17).

2, plug-in hydraulic control one-way valve according to claim 1 is characterized in that: offer the damping hole that communicates with described control runner (7) on described valve body (1).