Safety valve convenient to disassemble and assemble

Abstract

The utility model provides a safety valve convenient to disassemble and assemble, which relates to the technical field of safety valves and comprises a safety valve main body, a discharge port is arranged on one side of the safety valve main body, a first connecting flange is arranged at the bottom of the safety valve main body, and a second connecting flange is arranged at the bottom of the first connecting flange. A fixing hole is formed in the outer surface of the first connecting flange, a first limiting column is arranged at the top of the fixing hole, a moving plate is arranged at the bottom of the first limiting column, and a connecting column is fixedly connected to the bottom of the first limiting column. The movable plates at the two ends are fastened to the surfaces of the flanges by designing the rotating screws, fastening can be conveniently carried out by screwing the fixing nuts by designing the fixing nuts, operation is simple, the flanges can be fastened and connected without too much tedious operation, and when the flanges are dismounted, the flanges can be detached conveniently and rapidly. The movable plate can be separated from the surface of the flange only by reversely screwing the fixing nut.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a safety valve that is easy to disassemble and assemble. Background Art

[0002] A safety valve is a special valve that is normally closed under the action of external force. When the medium pressure in the equipment or pipeline exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. The safety valve belongs to the automatic valve category and is mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, which plays an important protective role in personal safety and equipment operation. There are two main types of safety valve structures: spring type and lever type. The spring type means that the seal between the valve disc and the valve seat relies on the force of the spring, and the lever type relies on the force of the lever and the weight. The existing large safety valves basically use flange connections, but the connecting medium between the flange connections is too cumbersome during installation and disassembly, resulting in inconvenient disassembly and assembly. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art. The connection medium between the existing safety valve flange connection is too complicated during installation and disassembly, and provides a safety valve that is easy to disassemble.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a safety valve that is easy to disassemble and assemble, comprising a safety valve body, a discharge port is arranged on one side of the safety valve body, a first connecting flange is arranged on the bottom of the safety valve body, a second connecting flange is arranged on the bottom of the first connecting flange, a fixing hole is arranged on the outer surface of the first connecting flange, a first limiting column is arranged on the top of the fixing hole, a movable plate is arranged on the bottom of the first limiting column, a connecting column is fixedly connected to the bottom of the first limiting column, a movable slot is arranged on the outer surface of the first limiting column, a rotating slot is arranged on the outer surface of the first limiting column, a rotating screw is movably connected to the inner wall of the rotating slot, a limiting slot is arranged on the inner wall of the rotating slot, and a second limiting column is fixedly connected to the bottom of the connecting column.

[0005] As a preferred implementation, a connecting plate is fixedly connected to the outer surface of the second limiting column, a positioning plate is fixedly connected to the outer surface of the connecting plate, and a positioning groove is provided on the outer surface of the second connecting flange.

[0006] As a preferred implementation, the inner wall of the positioning plate is snap-connected with the inner wall of the positioning groove.

[0007] As a preferred implementation, the fixing hole penetrates through the outer surface of the second connecting flange, and the inner wall of the fixing hole is snap-connected with the outer surface of the connecting column.

[0008] As a preferred embodiment, the outer surface of the movable plate is snap-connected with the inner wall of the movable slot, a threaded hole is provided on the outer surface of the movable plate, and the outer surface of the movable plate is rotatably connected with the outer surface of the rotating screw through the threaded hole.

[0009] As a preferred implementation, a fixing nut is provided on the outer surface of the second limiting column, and the bottom of the fixing nut is fixedly connected to the top of the rotating screw.

[0010] As a preferred embodiment, the rotating groove passes through the outer surface of the connecting column to the second limiting column, and the inner wall of the limiting groove is engaged with the outer surface of the rotating screw.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] The utility model is convenient for limiting the moving distance of the movable plate by designing the first limit column and the second limit column, and the cross-sections of the two are the same as the fixing hole, so that the first limit column and the second limit column can both pass through the fixing hole. The movable plate is designed to fasten the first connecting flange and the second connecting flange. By designing the connecting column, after the first limit column and the second limit column pass through the fixing hole, the movable connecting column is attached to the inner wall of the fixing hole, and the movable plates at both ends are clamped on the surfaces of the first connecting flange and the second connecting flange. By designing the rotating screw, the movable plates at both ends are fastened to the flange surfaces. By designing the fixing nut, it is convenient to fasten by twisting the fixing nut. The operation is simple, and the flanges can be fastened without too much complicated operations. When dismantling, the movable plate can be separated from the flange surface by simply twisting the fixing nut in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model provides a structural schematic diagram of a safety valve that is easy to disassemble and assemble.

[0014] Figure 2 The utility model is a side perspective view of a safety valve that is easy to disassemble and assemble.

[0015] Figure 3 The utility model provides a schematic structural diagram of a second connecting flange portion of a safety valve that is easy to disassemble and assemble.

[0016] Figure 4 The utility model provides a structural schematic diagram of a connection assembly of a safety valve that is easy to disassemble and assemble.

[0017] Legend:

[0018] 1. Safety valve body; 2. Discharge port; 3. First connecting flange; 4. Second connecting flange; 5. Fixing hole; 6. First limiting column; 7. Moving plate; 8. Connecting plate; 9. Positioning plate; 10. Fixing nut; 11. Positioning groove; 12. Connecting column; 13. Moving notch; 14. Rotating groove; 15. Rotating screw; 16. Limiting notch; 17. Second limiting column. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a safety valve that is easy to disassemble and assemble, comprising a safety valve body 1, a discharge port 2 is arranged on one side of the safety valve body 1, a first connecting flange 3 is arranged at the bottom of the safety valve body 1, a second connecting flange 4 is arranged at the bottom of the first connecting flange 3, a fixing hole 5 is arranged on the outer surface of the first connecting flange 3, the fixing hole 5 penetrates to the outer surface of the second connecting flange 4, the inner wall of the fixing hole 5 is snap-connected with the outer surface of the connecting column 12, a first limiting column 6 is arranged on the top of the fixing hole 5, a movable plate 7 is arranged at the bottom of the first limiting column 6, the outer surface of the movable plate 7 is snap-connected with the inner wall of the movable notch 13, a threaded hole is arranged on the outer surface of the movable plate 7, and the inner wall of the movable plate 7 is snap-connected with the inner wall of the movable notch 13. The outer surface is rotatably connected to the outer surface of the rotating screw 15 through a threaded hole, the bottom of the first limiting column 6 is fixedly connected to the connecting column 12, the outer surface of the first limiting column 6 is provided with a movable slot 13, the outer surface of the first limiting column 6 is provided with a rotating slot 14, the rotating slot 14 penetrates the connecting column 12 to the outer surface of the second limiting column 17, the inner wall of the rotating slot 14 is movably connected to the rotating screw 15, the inner wall of the rotating slot 14 is provided with a limiting slot 16, the inner wall of the limiting slot 16 is snap-connected with the outer surface of the rotating screw 15, the bottom of the connecting column 12 is fixedly connected to the second limiting column 17, the outer surface of the second limiting column 17 is provided with a fixing nut 10, and the bottom of the fixing nut 10 is fixedly connected to the top of the rotating screw 15.

[0022] In this embodiment, the first limiting column 6 and the second limiting column 17 are designed to limit the moving distance of the movable plate 7, and the cross-sections of the two are the same as the fixing hole 5, so that the first limiting column 6 and the second limiting column 17 can both pass through the fixing hole 5. At the same time, the lower ends of the first limiting column 6 and the second limiting column 17 are provided with moving notches 13, and the height of the moving notches 13 is greater than the height of the movable plate 7, so that the movable plate 7 has a certain moving space to prevent the movable plate 7 from being unable to clamp the outer surfaces of the first connecting flange 4 and the second connecting flange 5 when just extending into the fixing hole 5. The movable plate 7 is designed to fasten the first connecting flange 4 and the second connecting flange 5. By designing the connecting column 12, the first limiting column 6 and the second limiting column 17 are connected, and the side surface of the connecting column 12 is engaged with the inner wall of the fixing hole 5 but not completely engaged. The space left is convenient for the connecting column 12 to move in the fixing hole 5, so that after the first limiting column 6 and the second limiting column 17 pass through the fixing hole 5, the moving connecting column 12 is attached to the inner wall of the fixing hole 5, and the two are connected. The movable plate 7 at the end is stuck on the surface of the first connecting flange 4 and the second connecting flange 5. In order to make the movable plates 7 at both ends close to the flange surface, a rotation groove 14 is opened in the interior of the connecting column 12, and the rotating screw 15 rotates in the rotation groove 14. Since the outer surface of the movable plate 7 is provided with a threaded hole, the rotating screw 15 can rotate to make the movable plate 7 move. In order to make the rotating screw 15 rotate in situ, a limiting notch 16 is provided in the rotation groove 14. The rotating screw 15 at the limiting notch 16 is thinner and engages with the limiting notch 16, so that the rotating screw 15 can be stuck at the limiting notch 16 and rotated. In order to make the two movable plates 7 rotate in the opposite direction, the threads at both ends of the rotating screw 15 are opposite, so that the movable plate 7 clamps the surface of the flange. By designing a fixing nut 10 to fix one end of the rotating screw 15, it is convenient to tighten it by twisting the fixing nut 10. The operation is simple and does not require too much complicated operation to fasten the flanges. When dismantling, the movable plate 7 can be separated from the flange surface by simply twisting the fixing nut 10 in the opposite direction.

[0023] Example 2

[0024] like Figure 3 and Figure 4 As shown, the outer surface of the second limiting column 17 is fixedly connected to the connecting plate 8, the outer surface of the connecting plate 8 is fixedly connected to the positioning plate 9, the outer surface of the second connecting flange 4 is provided with a positioning groove 11, and the inner wall of the positioning plate 9 is snap-connected with the inner wall of the positioning groove 11.

[0025] In this embodiment, in order to facilitate the one-time insertion of two connecting structures, a connecting plate 8 is fixedly connected on the top of the two connecting structures. The two fixing holes 5 need to be observed when the connecting plate 8 is inserted into two at one time. Therefore, a positioning plate 9 and a corresponding positioning groove 11 are provided. The length of the positioning plate 9 is smaller than the positioning groove 11, and the reserved space is convenient for moving the connecting column 12. Therefore, it only needs to be aligned with the rightmost end of the positioning groove 11 to complete the insertion.

[0026] Working principle:

[0027] like Figure 1-Figure 4 As shown, when connecting, align the fixing holes of the first connecting flange 4 and the second connecting flange 5, hold the connecting plate 8 and align it with the rightmost end of the positioning groove 11, insert the connecting structure into the two fixing holes 5, then move the connecting plate 8, and move the positioning plate 9 to the leftmost end in the positioning groove 11, so that one side of the connecting column 12 fits the fixing hole 5, and the movable plates 7 at both ends are respectively on the surfaces of the first connecting flange 4 and the second connecting flange 5, and finally, tighten the fixing nut 10 to drive the rotating screw 15 to rotate, so that the two movable plates 7 rotate in opposite directions and gradually tighten until they can no longer rotate to complete the connection of the flanges.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A safety valve that is easy to disassemble and assemble, comprising a safety valve body (1), characterized in that: A discharge port (2) is provided on one side of the safety valve body (1), a first connecting flange (3) is provided at the bottom of the safety valve body (1), a second connecting flange (4) is provided at the bottom of the first connecting flange (3), a fixing hole (5) is provided on the outer surface of the first connecting flange (3), a first limiting column (6) is provided at the top of the fixing hole (5), a movable plate (7) is provided at the bottom of the first limiting column (6), a connecting column (12) is fixedly connected to the bottom of the first limiting column (6), a movable slot (13) is provided on the outer surface of the first limiting column (6), a rotating slot (14) is provided on the outer surface of the first limiting column (6), a rotating screw (15) is movably connected to the inner wall of the rotating slot (14), a limiting slot (16) is provided on the inner wall of the rotating slot (14), and a second limiting column (17) is fixedly connected to the bottom of the connecting column (12).

2. The safety valve that is easy to disassemble and assemble according to claim 1, characterized in that: The outer surface of the second limiting column (17) is fixedly connected to a connecting plate (8), the outer surface of the connecting plate (8) is fixedly connected to a positioning plate (9), and the outer surface of the second connecting flange (4) is provided with a positioning groove (11).

3. The safety valve that is easy to disassemble and assemble according to claim 2 is characterized in that: The inner wall of the positioning plate (9) is snap-connected with the inner wall of the positioning groove (11).

4. The safety valve that is easy to disassemble and assemble according to claim 1, characterized in that: The fixing hole (5) penetrates to the outer surface of the second connecting flange (4), and the inner wall of the fixing hole (5) is snap-connected with the outer surface of the connecting column (12).

5. The safety valve that is easy to disassemble and assemble according to claim 1 is characterized in that: The outer surface of the movable plate (7) is snap-connected with the inner wall of the movable slot (13); a threaded hole is provided on the outer surface of the movable plate (7); and the outer surface of the movable plate (7) is rotatably connected with the outer surface of the rotating screw (15) through the threaded hole.

6. The safety valve that is easy to disassemble and assemble according to claim 1, characterized in that: The outer surface of the second limiting column (17) is provided with a fixing nut (10), and the bottom of the fixing nut (10) is fixedly connected to the top of the rotating screw rod (15).

7. The safety valve that is easy to disassemble and assemble according to claim 1, characterized in that: The rotating groove (14) penetrates the outer surface of the connecting column (12) to the second limiting column (17), and the inner wall of the limiting notch (16) is snap-connected with the outer surface of the rotating screw (15).

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