Stop valve

Abstract

The utility model provides a stop valve, and belongs to the technical field of valves. The problem that an existing manual reset switch cannot be subsequently controlled to be turned on after being damaged is solved. The stop valve comprises a valve body with a valve rod and a connecting end and an electromagnetic valve connected with the valve body and used for controlling the valve rod to rotate, an output rod connected with the valve rod is arranged on the electromagnetic valve, and a convex ring part is arranged on the peripheral wall, located at the valve rod, of the valve body. A mounting frame which is connected with the convex ring part and used for mounting the electromagnetic valve is arranged on the convex ring part, a connecting sleeve which facilitates connection of the valve rod and the output rod and enables the valve rod and the output rod to be separated is arranged between the valve rod and the output rod, and a connecting sleeve which is connected with the valve rod, matched with the connecting sleeve and used for connecting the valve rod and the output rod is arranged at the upper end of the valve rod. An opening and closing unit which is connected with the valve body and used for controlling the connecting end of the valve body to be opened and closed is arranged at the position, located at the connecting end, of the valve body. The utility model has the advantage that the reset switch can be continuously controlled to be turned on after being damaged.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and relates to a shut-off valve. Background Technology

[0002] The shut-off valve is installed on the integrated low-pressure gas system pipeline. When the gas supply pressure in the pipeline is low, high, or under high, it can automatically close and shut off the gas pipeline. In the event of gas outage, abnormal gas supply, or high temperature, it can automatically close and requires manual opening. However, existing manual opening generally relies on a manual control reset switch or a remote control reset switch. In actual operation, since the reset switch is not used frequently, when it is damaged, the shut-off valve cannot be manually opened, affecting subsequent use. At the same time, the shut-off valve and the pipeline are generally connected by a flange. If the sealing at the connection is not good, the sealing ring or the pipeline usually needs to be replaced. During disassembly, the shut-off valve needs to be in the closed state. If it is not closed, the gas in the shut-off valve will overflow, but manual reset is still required afterward, which is relatively troublesome. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a shut-off valve that can be manually controlled to open and close, thus solving these problems.

[0004] The objective of this utility model can be achieved through the following technical solution: A shut-off valve includes a valve body with a valve stem and a connecting end, and a solenoid valve connected to the valve body and used to control the rotation of the valve stem. The solenoid valve is provided with an output rod connected to the valve stem. The valve body has an axially outwardly protruding convex ring on its outer peripheral wall at the valve stem location, which protects the valve stem and ensures sealing at the valve stem location. The convex ring is provided with a mounting bracket connected to it for mounting the solenoid valve. A connecting sleeve is provided between the valve stem and the output rod, facilitating connection and disengagement between them. A control unit is provided at the upper end of the valve stem, connecting to it and cooperating with the connecting sleeve, and capable of manual control of opening and closing. An opening / closing unit is provided at the connecting end of the valve body, connected to it and used to control the opening and closing of the valve body's connecting end.

[0005] In the aforementioned shut-off valve, the control unit includes a connecting column connected to the valve stem, and the outer peripheral wall of the connecting column has a polygonal structure. The lower end of the output rod also has a polygonal structure, and the interior of the connecting sleeve also has a polygonal structure. A locking block connected to the outer peripheral wall of the connecting column, and whose outer peripheral wall also has a polygonal structure, is provided thereon.

[0006] In the aforementioned shut-off valve, the opening and closing unit includes an opening and closing frame, a shaft, an abutment ring, a limiting ring, and a return spring. The opening and closing frame is disposed within and connected to the connecting end. The opening and closing frame has several through holes arranged along its circumference and an assembly hole for the shaft to pass through for installation. The limiting ring is also disposed within and connected to the connecting end, and is located on the outer side of the corresponding opening and closing frame. The abutment ring is sleeved on and connected to the shaft, and is located between the limiting ring and the opening and closing frame. The return spring is also sleeved on the shaft, and its two ends abut against the abutment ring and the opening and closing frame, respectively.

[0007] In the aforementioned shut-off valve, an opening and closing ring is provided on the outer end of the shaft and is connected thereto to control the normally open opening and closing unit. The inner diameter of the opening and closing ring is larger than the outer diameter of the shaft, and the opening and closing ring is connected to the shaft through several connecting rods.

[0008] Compared with existing technologies, this shut-off valve is equipped with a control unit, which enables it to be operated even after the reset switch is damaged. At the same time, the opening and closing unit can reduce leakage after the pipeline and valve body are disassembled. Attached Figure Description

[0009] Figure 1 This is a side view schematic diagram of the structure of this shut-off valve.

[0010] In the diagram, 1 is the valve body; 2 is the solenoid valve; 3 is the convex ring; 4 is the mounting bracket; 5 is the connecting sleeve; 6 is the connecting column; 7 is the locking block; 8 is the opening and closing frame; 9 is the shaft; 10 is the abutment ring; 11 is the limit ring; 12 is the return spring; and 13 is the opening and closing ring. Detailed Implementation

[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0012] like Figure 1As shown, this shut-off valve includes a valve body 1 with a valve stem and a connecting end, and a solenoid valve 2 connected to the valve body 1 for controlling the rotation of the valve stem. The solenoid valve 2 is provided with an output rod connected to the valve stem. The outer peripheral wall of the valve body 1 at the valve stem location is provided with an axially outwardly protruding convex ring 3 for protecting the valve stem and ensuring the sealing at the valve stem location. The convex ring 3 is provided with a mounting bracket 4 connected to it for mounting the solenoid valve 2. The vertical cross-section of the mounting bracket 4 is U-shaped. A connecting sleeve is provided between the valve stem and the output rod to facilitate the connection between the valve stem and the output rod and also to allow the valve stem and the output rod to be disengaged. 5. The connecting sleeve 5 is connected to the output rod via a pin. The output rod and the connecting sleeve 5 have mounting holes that mate with the pin. The upper end of the valve stem is equipped with a control unit that connects to and mates with the connecting sleeve 5, and can be manually controlled to open and close. The valve body 1 has an opening / closing unit at the connecting end that connects to and controls the opening and closing of the valve body 1's connecting end. The control unit includes a connecting post 6 connected to the valve stem, and the outer peripheral wall of the connecting post 6 has a polygonal structure. The lower end of the output rod also has a polygonal structure, and the interior of the connecting sleeve 5 also has a polygonal structure. The outer peripheral wall of the connecting post 6 is provided with… A locking block 7, which is connected to the connecting sleeve 5 and has a polygonal outer wall, is provided. This allows the connecting sleeve 5 to connect the connecting column 6 and the valve stem, enabling the valve to operate. If the reset switch fails, the connecting sleeve 5 can be slid upwards, and the opening and closing can be manually controlled by using a wrench in conjunction with the locking block 7. The opening and closing unit includes an opening and closing frame 8, a shaft 9, a contact ring 10, a limit ring 11, and a reset spring 12. The opening and closing frame 8 is located inside and connected to the connecting end. The opening and closing frame 8 has several through holes arranged along its circumference, and it also has mounting holes for the shaft 9 to pass through. Ring 11 is also disposed inside and connected to the connecting end. The limiting ring 11 is located on the outside of the corresponding opening and closing frame 8. The abutment ring 10 is sleeved on the shaft 9 and connected to it. The abutment ring 10 is located between the limiting ring 11 and the opening and closing frame 8. The return spring 12 is also sleeved on the shaft 9. The two ends of the return spring 12 abut against the abutment ring 10 and the opening and closing frame 8 respectively. An opening and closing ring 13 is disposed on the outer end of the shaft 9 and connected to it to control the opening and closing unit to be normally open. The inner diameter of the opening and closing ring 13 is larger than the outer diameter of the shaft 9, and the opening and closing ring 13 is connected to the shaft 9 through several connecting rods.

[0013] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0014] Although this document uses terms such as "etc." extensively, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A shut-off valve, comprising a valve body with a valve stem and a connecting end, and a solenoid valve connected to the valve body for controlling the rotation of the valve stem, wherein the solenoid valve is provided with an output rod connected to the valve stem, characterized in that, The valve body has an axially outwardly protruding convex ring on its outer peripheral wall at the valve stem, which protects the valve stem and ensures its sealing. The convex ring is equipped with a mounting bracket for mounting a solenoid valve. A connecting sleeve is provided between the valve stem and the output rod to facilitate connection and disengagement between them. The upper end of the valve stem is equipped with a control unit that is connected to the connecting sleeve and can be manually controlled to open and close. The valve body has an opening and closing unit at the connection end that is connected to the connection end and used to control the opening and closing of the valve body connection end.

2. A shut-off valve according to claim 1, characterized in that, The control unit includes a connecting post connected to the valve stem, and the outer peripheral wall of the connecting post has a polygonal structure. The lower end of the output rod also has a polygonal structure. The interior of the connecting sleeve also has a polygonal structure. A locking block connected to the outer peripheral wall of the connecting post, and whose outer peripheral wall also has a polygonal structure, is provided.

3. A shut-off valve according to claim 1, characterized in that, The opening and closing unit includes an opening and closing frame, a shaft, an abutment ring, a limiting ring, and a return spring. The opening and closing frame is disposed inside and connected to the connecting end. The opening and closing frame has several through holes arranged along its circumference and an assembly hole for the shaft to pass through for installation. The limiting ring is also disposed inside and connected to the connecting end and is located on the outside of the corresponding opening and closing frame. The abutment ring is sleeved on and connected to the shaft and is located between the limiting ring and the opening and closing frame. The return spring is also sleeved on the shaft, and its two ends abut against the abutment ring and the opening and closing frame, respectively.

4. A shut-off valve according to claim 3, characterized in that, The outer end of the shaft is provided with an opening and closing ring that is connected to it and controls the opening and closing unit to be normally open. The inner diameter of the opening and closing ring is larger than the outer diameter of the shaft, and the opening and closing ring is connected to the shaft through several connecting rods.

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