Stop valve convenient to install

Abstract

The utility model discloses a cut-off valve convenient to install, which belongs to the field of cut-off valves and comprises a valve body, connecting pipes are fixedly connected to two sides of the valve body, a valve rod is movably installed on the upper portion of the valve body, an actuator is fixedly connected to the valve rod, and flanges are fixedly connected to the outer ends of the connecting pipes. A positioning mechanism is movably installed on the portion, located on the side face of the flange, of the connecting pipe, and the positioning mechanism comprises a connecting bolt, a connecting nut, an installing plate, a movable rod, a limiting body, a limiting groove, a spring and a connecting body. The flanges are fixedly connected with each other through the connecting nuts and the connecting bolts, the connecting nuts are clamped into the limiting grooves of the limiting bodies, and therefore the connecting nuts are limited, the connecting nuts are not prone to loosening, the flanges connected through the connecting nuts and the connecting bolts are more fixed and not prone to loosening, media in the valve body are prevented from flowing out, and the valve is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of cut-off valves, in particular to a cut-off valve which is easy to install. Background Art

[0002] The cut-off valve is a type of actuator in the automation system. It consists of a multi-spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve. The cut-off valve has a wide range of uses and can be used to cut off coal gas, combustion air, cold air and flue gas, etc. The cut-off valve is connected to the flange of the pipeline through a flange, and the flanges are fixedly connected by bolts and nuts. However, during the flow of medium in the valve body, vibration is likely to occur. Nuts and bolts are prone to loosening under long-term vibration, causing medium leakage, so improvement is needed. Utility Model Content

[0003] The main purpose of the utility model is to provide a cut-off valve that is easy to install and can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A cut-off valve that is easy to install comprises a valve body, connecting pipes are fixedly connected to the two sides of the valve body, a valve stem is movably installed at the upper position of the valve body, an actuator is fixedly connected to the valve stem, the outer end of the connecting pipe is fixedly connected to a flange, and a positioning mechanism is movably installed on the connecting pipe at a side position of the flange, the positioning mechanism comprises a connecting bolt, a connecting nut, a mounting plate, a movable rod, a limiting body, a limiting groove, a spring and a connecting body, the connecting nut is movably installed on the connecting bolt, the connecting bolt and the flange are movably installed, the mounting plate is fixedly connected to the connecting pipe and is located at the side position of the flange, the connecting body is fixedly connected to the mounting plate, the movable rod is movably installed in the mounting plate and the connecting body, one end of the movable rod is fixedly connected to the limiting body, the limiting groove is opened in the limiting body, the connecting nut is movably installed in the limiting groove, and the spring is movably installed on the movable rod and is located between the mounting plate and the limiting body.

[0006] Preferably, a bracket is fixedly connected to the upper position of the valve body, the actuator is fixedly connected to the valve body through the bracket, a plurality of mounting holes are opened on the flange, and the connecting bolts are movably installed in the mounting holes of the flange.

[0007] Preferably, the positioning mechanism further includes a movable hole, which is provided on the mounting plate and the connecting body, and the movable rod is movably mounted in the movable hole of the mounting plate and the connecting body.

[0008] Preferably, the positioning mechanism further includes a connecting rod, both ends of which are fixedly connected to the other end of the movable rod respectively, and the connecting rod is located at a side position of the mounting plate.

[0009] Preferably, the positioning mechanism further includes a handle, and the handle is fixedly connected to the limiting body.

[0010] Preferably, the positioning mechanism further includes a sliding hole, the sliding hole is provided on the limiting body, and the sliding hole and the limiting groove are communicated with each other, and the connecting bolt is movably installed in the sliding hole.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, through the positioning mechanism, when the flanges are connected to each other through the connecting nuts and connecting bolts, the connecting nuts are stuck in the limiting grooves of the limiting bodies, thereby limiting the connecting nuts, making it difficult for the connecting nuts to loosen. The flanges connected by the connecting nuts and connecting bolts are more fixed, less likely to loosen, and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the positioning mechanism of the utility model;

[0015] Figure 3 It is a schematic cross-sectional structure diagram of the limiting body of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the mounting plate and the connector of the utility model.

[0017] In the figure: 1. valve body; 2. connecting pipe; 3. flange; 4. valve stem; 5. actuator; 6. bracket; 7. positioning mechanism; 701. connecting bolt; 702. connecting nut; 703. mounting plate; 704. movable rod; 705. limiting body; 706. limiting groove; 707. sliding hole; 708. handle; 709. spring; 710. connecting body; 711. connecting rod; 712. movable hole; 8. mounting hole. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-2As shown, a cut-off valve that is easy to install includes a valve body 1, connecting pipes 2 are fixedly connected to both sides of the valve body 1, a valve stem 4 is movably installed on the upper position of the valve body 1, an actuator 5 is fixedly connected to the valve stem 4, the outer end of the connecting pipe 2 is fixedly connected to a flange 3, a positioning mechanism 7 is movably installed on the connecting pipe 2 at a side position of the flange 3, the positioning mechanism 7 includes a connecting bolt 701, a connecting nut 702, a mounting plate 703, a movable rod 704, a limiting body 705, a limiting groove 706, a spring 709 and a connecting body 710, the connecting nut 702 is movably installed on the connecting bolt 701, the connecting bolt 701 and the flange 3 are movably installed, the mounting plate 703 is fixedly connected to the connecting pipe 2 and is located at a side position of the flange 3, the connecting body 710 is fixedly connected to the mounting plate 703, the movable rod 704 is movably installed on the mounting plate 703, In the connecting body 710, one end of the movable rod 704 is fixedly connected to the limiting body 705, and the limiting groove 706 is provided in the limiting body 705. The connecting nut 702 is movably installed in the limiting groove 706. The upper position of the valve body 1 is fixedly connected with a bracket 6, and the actuator 5 is fixedly connected to the valve body 1 through the bracket 6. A plurality of mounting holes 8 are provided on the flange 3, and the connecting bolt 701 is movably installed in the mounting hole 8 of the flange 3. The limiting groove 706 of the limiting body 705 and the connecting nut 702 have shapes corresponding to each other, so that the connecting nut 702 can be clamped by the limiting groove 706 of the limiting body 705, so that the connecting nut 702 cannot rotate to the side, thereby preventing the connecting nut 702 from detaching. The flange 3 of the valve body 1 and the mounting holes 8 on the external pipe flange 3 correspond to each other, so that the connecting bolt 701 can pass through the mounting holes 8 of the two flanges 3 for fixed connection.

[0020] like Figure 1-4As shown, the spring 709 is movably mounted on the movable rod 704 and is located between the mounting plate 703 and the limiting body 705. The positioning mechanism 7 also includes a movable hole 712, which is opened on the mounting plate 703 and the connecting body 710. The movable rod 704 is movably mounted in the movable hole 712 of the mounting plate 703 and the connecting body 710. The positioning mechanism 7 also includes a connecting rod 711, and the two ends of the connecting rod 711 are respectively fixedly connected to the other end of the movable rod 704. The connecting rod 711 is located at the side of the mounting plate 703. The positioning mechanism 7 also includes a handle 708, which is fixedly connected to the limiting body 705. The positioning mechanism 7 also includes a sliding hole 707, which is opened on the limiting body 70 5, and the sliding hole 707 is connected with the limiting groove 706, the connecting bolt 701 is movably installed in the sliding hole 707, and the handle 708 is pulled sideways, so that the handle 708 drives the limiting body 705 to move sideways, so that the limiting body 705 and the movable rod 704 move sideways, and the movable rod 704 moves in the movable holes 712 of the mounting plate 703 and the connecting body 710, and the spring 709 on the movable rod 704 is compressed by the moving limiting body 705, so that the limiting body 705 moves sideways to leave space, and by moving the limiting body 705, the limiting body 705 is moved to the outer position, so that it is convenient to insert the limiting body 705 into the limiting groove 706 of the limiting body 705 through the connecting nut 702, so as to facilitate the clamping of the connecting nut 702.

[0021] It should be noted that the utility model is a cut-off valve that is easy to install. The flanges 3 on both sides of the valve body 1 are close to the flanges 3 of the external pipeline. The connecting bolts 701 are passed through the mounting holes 8 of the two flanges 3, and the connecting nuts 702 are movably installed on the connecting bolts 701. The connecting nuts 702 and the limiting body 705 are located on the same side. The handle 708 is pulled sideways so that the handle 708 drives the limiting body 705 to move sideways, so that the limiting body 705 and the movable rod 704 move sideways. The movable rod 704 moves in the movable holes 712 of the mounting plate 703 and the connecting body 710. The spring 709 on the movable rod 704 is compressed by the moving limiting body 705, so that the limiting body 705 moves sideways. Move to leave space for the connecting nut 702 to move, then insert the connecting nut 702 into the limiting groove 706 of the limiting body 705, release the handle 708 to allow the spring 709 to resume its expansion, and push the limiting body 705 to move sideways by the restored spring 709, so that the connecting nut 702 is stuck in the side position of the flange 3, and then screw the connecting bolt 701 into the connecting nut 702, and the connecting bolt 701 passes through the sliding hole 707 of the limiting body 705, and the two flanges 3 are fixedly connected by the connecting nut 702 and the connecting bolt 701. Since the limiting body 705 clamps the connecting nut 702 through the limiting groove 706, the connecting nut 702 is fixedly connected and is not easy to loosen, and the installation is more stable.

[0022] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It is only a preferred embodiment of the utility model, and its description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The embodiments can be changed, modified, replaced and deformed without departing from the principle and purpose of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A cut-off valve that is easy to install, comprising a valve body (1), connecting pipes (2) are fixedly connected to both sides of the valve body (1), a valve stem (4) is movably mounted on the upper part of the valve body (1), an actuator (5) is fixedly connected to the valve stem (4), and a flange (3) is fixedly connected to the outer end of the connecting pipe (2), characterized in that: A positioning mechanism (7) is movably mounted on the connecting pipe (2) at a side position of the flange (3). The positioning mechanism (7) comprises a connecting bolt (701), a connecting nut (702), a mounting plate (703), a movable rod (704), a limiting body (705), a limiting groove (706), a spring (709) and a connecting body (710). The connecting nut (702) is movably mounted on the connecting bolt (701). The connecting bolt (701) is movably mounted on the flange (3). The mounting plate (703) is fixedly connected to the connecting pipe (2) and is located at The connecting body (710) is fixedly connected to the mounting plate (703), the movable rod (704) is movably installed in the mounting plate (703) and the connecting body (710), one end of the movable rod (704) is fixedly connected to the limiting body (705), the limiting groove (706) is opened in the limiting body (705), the connecting nut (702) is movably installed in the limiting groove (706), and the spring (709) is movably installed on the movable rod (704) and is located between the mounting plate (703) and the limiting body (705).

2. A cut-off valve that is easy to install according to claim 1, characterized in that: A bracket (6) is fixedly connected to the upper portion of the valve body (1), and the actuator (5) is fixedly connected to the valve body (1) via the bracket (6). A plurality of mounting holes (8) are provided on the flange (3), and the connecting bolts (701) are movably mounted in the mounting holes (8) of the flange (3).

3. A cut-off valve that is easy to install according to claim 2, characterized in that: The positioning mechanism (7) further comprises a movable hole (712), wherein the movable hole (712) is formed on the mounting plate (703) and the connecting body (710), and the movable rod (704) is movably mounted in the movable hole (712) of the mounting plate (703) and the connecting body (710).

4. A cut-off valve that is easy to install according to claim 3, characterized in that: The positioning mechanism (7) further comprises a connecting rod (711), the two ends of the connecting rod (711) are respectively fixedly connected to the other end of the movable rod (704), and the connecting rod (711) is located on the side of the mounting plate (703).

5. A cut-off valve that is easy to install according to claim 4, characterized in that: The positioning mechanism (7) further comprises a handle (708), and the handle (708) is fixedly connected to the limiting body (705).

6. A cut-off valve that is easy to install according to claim 5, characterized in that: The positioning mechanism (7) further comprises a sliding hole (707), wherein the sliding hole (707) is formed on the limiting body (705), and the sliding hole (707) is communicated with the limiting groove (706), and the connecting bolt (701) is movably installed in the sliding hole (707).

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