CN204610972U - With the straight valve of cutoff function - Google Patents

Abstract

The utility model discloses a straight valve with cut-off function, which comprises a valve body, a passage in the valve body is formed with a valve seat opening facing the side of the valve body, and a valve plug for opening and closing the valve seat opening is arranged on the valve seat opening. The side wall of the valve body is equipped with a hand wheel that drives the valve plug for opening and closing movement. The inlet end of the valve body is equipped with a one-way valve body. The passage in the one-way valve body forms a one-way valve seat port. The one-way valve core is used to open and close the one-way valve seat port. The rod body of the one-way valve core is set on the guide seat, and the guide seat is installed on the inlet end of the valve body by the one-way valve body. A compression spring sleeved on the rod body is provided, and the inlet end of the one-way valve body is set as a sub-joint that can be inserted into the female joint. Adopting the steel cylinder valve of the utility model realizes the matching pressure reducing valve connection through the joint mode, so that the replacement of the steel cylinder is simple, fast, safe and reliable.

Description

Straight valve with shut-off function

technical field

The utility model relates to the technical field of cylinder valves, in particular to a straight valve with a cut-off function.

Background technique

At present, the gas outlet of the traditional steel cylinder valve is an open threaded connection, that is, the gas cylinder is connected to the pressure reducing valve through the thread and connected to the gas appliance. When the gas in the cylinder is used up and the gas is replaced, the pressure reducing valve must be unscrewed and Screw the decompression valve into the gas cylinder, the replacement process is loaded down with trivial details, the operation is complicated, and the installation is not good, which will easily cause gas leakage.

Utility model content

The technical problem to be solved by the utility model is to provide a straight valve with cut-off function.

The technical solution adopted to solve the above technical problems: a straight valve with cut-off function, including a valve body, characterized in that: the channel in the valve body is formed with a valve seat port facing the side of the valve body, and the valve seat port is There is a valve plug for opening and closing the valve seat, and a hand wheel for driving the valve plug to open and close is installed on the side wall of the valve body. One-way valve seat port, the one-way valve seat port is provided with a one-way valve core for opening and closing the one-way valve seat port, the rod body of the one-way valve core is set on the guide seat, and the guide seat is installed on the valve body by the one-way valve body The inlet end of the one-way valve body is provided with a compression spring sleeved on the rod body between the one-way valve core and the guide seat, and the inlet end of the one-way valve body is set as a sub-joint that can be inserted into the female joint.

The beneficial effects brought by the adoption of the utility model: adopting the steel cylinder valve of the utility model realizes the matching pressure reducing valve connection through a live connection, so that the replacement of the steel cylinder is simple, fast, safe and reliable. The sub-joint of the straight valve can be flexibly connected with the female joint of the pressure reducing valve. When plugged in, the female connector will retract against the one-way valve core, and the one-way valve core will leave the one-way valve seat port, thereby opening the one-way valve seat port, so that the pressure reducing valve and the straight valve can be connected, and then the valve can be opened by turning the handwheel. Open the straight valve. After unplugging the female joint of the pressure reducing valve, the one-way valve core is pushed out by the spring, and pressed against the one-way valve seat, and the one-way valve seat is blocked, thereby closing the passage between the straight valve and the outside world and preventing the cylinder from leaking. Internal gas leaks.

Description of drawings

Fig. 1 is a structural schematic diagram of a straight valve with cut-off function of the present invention.

Detailed ways

As shown in Figure 1, a straight valve with cut-off function includes a valve body 1, the passage in the valve body 1 is formed with a valve seat port 11 facing the side of the valve body 1, and the valve seat port 11 is provided with a To open and close the valve plug 2 of the valve seat port 11, a handwheel 3 for driving the valve plug 2 to open and close is installed on the side wall of the valve body 1. The inlet end of the valve body 1 is sealed with a one-way valve body 4. The passage in the valve body 4 is formed with a one-way valve seat port 41, and the one-way valve seat port 41 is provided with a one-way valve core 5 for opening and closing the one-way valve seat port 41, and the rod body 51 of the one-way valve core 5 is set on the On the guide seat 6, the guide seat 6 is installed on the inlet end of the valve body 1 by the one-way valve body 4, and the compression spring 7 set on the rod body 51 is arranged between the one-way valve core 5 and the guide seat 6, and the one-way valve body The inlet end of 4 is set as a sub-joint 42 that can be inserted into the female joint. It can be known that seals should be installed between the hand wheel 3 , the one-way valve body 4 and the valve body 1 , and a communication hole 61 is opened on the guide seat 6 .

When plugging the pressure reducing valve, the female joint of the pressure reducing valve will retract against the one-way valve core 5, and the one-way valve core 5 leaves the one-way valve seat port 41, thereby opening the one-way valve seat port 41, so that the pressure reducing valve It is connected with the straight valve, and then the straight valve is opened by turning the hand wheel. After the female joint of the pressure reducing valve is pulled out, the check valve core 5 is pushed out by the spring 7, and pressed against the check valve seat port 41, and the check valve seat port 41 is blocked, thereby closing the straight valve and the outside world. channel to prevent gas leakage in the cylinder.

Claims (1)

1. the straight valve with cutoff function, include valve body, it is characterized in that: the passage in described valve body is formed with the valve seat mouth towards valve body sidepiece, valve seat mouth is provided with the valve plug opening and closing valve seat mouth, body wall is provided with the handwheel driving valve plug to do to open and close movement, the entry end of valve body is provided with check valve body, passage in check valve body is formed with one-way valve seat mouth, one-way valve seat mouth is provided with the nonreturn valve core opening and closing one-way valve seat mouth, the body of rod of nonreturn valve core is sleeved on guide holder, guide holder is arranged on the entry end of valve body by check valve body, the Compress Spring be enclosed within the body of rod is provided with between nonreturn valve core and guide holder, the entry end of check valve body be set as can with the sub-joint of female joint grafting.