Corrugated pipe stop valve with valve rod convenient to replace

Abstract

The utility model discloses a corrugated pipe stop valve convenient for replacing a valve rod, which comprises a main body assembly, a valve rod assembly, a valve rod assembly and a valve rod assembly, and is characterized in that the main body assembly comprises a valve body, a bracket, a valve plate and a valve rod; the first connecting assembly comprises a first lantern ring, a first through hole, a first through hole, a second through hole, an inserting rod, a cylinder, a second through hole, a first clamping block and a spring; the first lantern ring is welded to the middle of the upper surface of the valve plate, the first through hole is formed in the side edge of the first lantern ring, the first penetrating hole is formed in the middle of the valve rod, the second penetrating hole is formed in the middle of the valve rod, the first penetrating hole communicates with the second penetrating hole, and the inserting rod is inserted into the first penetrating hole and the second penetrating hole. The utility model relates to a corrugated pipe stop valve, and aims to solve the problems that a valve rod belongs to an easily-damaged part, and when the valve rod of an existing corrugated pipe stop valve is replaced, the valve rod can be replaced only after a valve body and other parts are integrally disassembled, especially a corrugated pipe is disassembled, the integral disassembly wastes time and labor, the system shutdown time is too long, and the production efficiency is seriously influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows globe valves, in particular to a bellows globe valve facilitating the replacement of a valve stem. Background Technique

[0002] The bellows globe valve, also known as a bellows sealed globe valve, mainly uses a metal bellows to achieve the sealing of the valve stem part. It is mainly applied in fields such as petrochemical industry, chemical fiber textile, electric power and steel, printing and dyeing rubber, etc.

[0003] The valve stem belongs to a vulnerable part. When replacing the valve stem of the existing bellows globe valve, it is necessary to disassemble the valve body and other parts as a whole. Especially, it is necessary to remove the bellows to replace the valve stem. The overall disassembly is time-consuming and laborious, resulting in too long a system downtime and seriously affecting the production efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bellows globe valve facilitating the replacement of a valve stem to solve the problem proposed in the above background technique that the valve stem belongs to a vulnerable part. When replacing the valve stem of the existing bellows globe valve, it is necessary to disassemble the valve body and other parts as a whole. Especially, it is necessary to remove the bellows to replace the valve stem. The overall disassembly is time-consuming and laborious, resulting in too long a system downtime and seriously affecting the production efficiency.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a bellows globe valve facilitating the replacement of a valve stem, including:

[0007] A main body assembly, the main body assembly includes a valve body, a bracket, a valve plate and a valve stem;

[0008] The bracket is connected to the upper end of the valve body through a flange plate. The valve plate is movably connected inside the valve body. The valve stem is connected to the middle of the upper surface of the valve plate, and the middle section of the valve stem is screwed to the middle of the bracket;

[0009] A bellows is hermetically connected between the inner top surface of the valve body and the valve plate, and the bellows wraps the lower section of the valve stem;

[0010] A first connection assembly, the first connection assembly includes a first collar, a first through hole, a first through hole, a second through hole, an insertion rod, a cylinder, a second through hole, a first clamping block and a spring;

[0011] The first set of rings is welded to the middle of the upper surface of the valve plate. The first through hole is opened on the side of the first set of rings. The first through hole is opened in the middle of the valve stem, and the second through hole is opened in the middle of the valve stem. The first through hole is communicated with the second through hole. The plug rod is inserted into the first through hole and the second through hole. The cylinder is welded to the top of the plug rod. The second through hole is opened on the side of the second through hole. The first clamping block is inserted into the first through hole and the second through hole. One end of the spring is fixed on the first clamping block, and the other end is fixed on the inner side wall of the second through hole.

[0012] Further, there are two groups of the first through holes and the second through holes, which are symmetrically distributed in a ring shape.

[0013] Further, there are two groups of the first clamping blocks and the springs, which are movably connected in the second through hole and correspond to the positions of the first through hole and the second through hole.

[0014] Further, the main body assembly further includes a sealing gasket and a turntable;

[0015] The sealing gasket is fixed to the lower surface of the valve plate by screws, and the turntable is fixed to the top of the valve stem.

[0016] Further, a second connection assembly is further included;

[0017] The second connection assembly includes a second set of rings and a clamping groove;

[0018] The second set of rings is welded to the middle of the lower end of the turntable. The clamping groove is opened on the inner side wall of the second set of rings, and there are two in total, which are symmetrically distributed in a ring shape.

[0019] Further, the second connection assembly includes a second clamping block and a locking rod;

[0020] The second clamping block is welded to the top of the valve stem, and the second clamping block is inserted into the clamping groove. The locking rod penetrates and is screwed to the side of the second set of rings.

[0021] Compared with the prior art, the advantages of the present utility model are as follows:

[0022] First, in the present utility model, through the first connection assembly provided, when the valve stem needs to be replaced, the cylinder is pulled to drive the plug rod to move out of the first through hole and the second through hole. At this time, under the action of the spring, the first clamping block moves along the first through hole and the second through hole and retracts into the second through hole, and then the valve stem inserted in the first set of rings can be pulled out. To install a new valve stem, reverse the above steps. This setting can quickly replace the valve stem without disassembling the valve body.

[0023] Second, in the present utility model, through the second connection assembly provided, the locking rod is loosened, and the valve stem is pulled to drive the valve stem and the second clamping block at the upper end to move out of the second set of rings and the clamping groove. This setting facilitates the quick disassembly of the valve stem and the turntable. Description of the Drawings

[0024] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0026] Figure 2 It is a schematic diagram of the connection of the valve stem, valve plate and turntable of the present utility model;

[0027] Figure 3 It is a schematic diagram of the positions of the cylinder and the second clamping block of the present utility model;

[0028] Figure 4 It is a cross-sectional view of the valve stem of the present utility model;

[0029] Figure 5 For the present utility model Figure 4 The enlarged view at position A in

[0030] Figure 6 It is a schematic diagram of the structure of the valve plate and the first collar of the present utility model;

[0031] Figure 7 It is a schematic diagram of the structure of the turntable and the second collar of the present utility model.

[0032] In the drawings, the list of components represented by each label is as follows:

[0033] 10, valve body; 11, bracket; 12, valve plate; 13, gasket; 14, valve stem; 15, turntable; 20, first collar; 21, first through hole; 22, first through-bore; 23, second through-bore; 24, plug rod; 25, cylinder; 26, second through hole; 27, first clamping block; 28, spring; 30, second collar; 31, second clamping block; 32, clamping groove; 33, locking rod. Detailed implementation manners

[0034] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model in conjunction with the drawings.

[0035] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0036] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model in conjunction with the accompanying drawings.

[0037] Please refer to Figures 1-6 As shown, this embodiment is a bellows globe valve facilitating the replacement of the valve stem, including:

[0038] A main body assembly, which includes a valve body 10, a bracket 11, a valve plate 12, and a valve stem 14;

[0039] The bracket 11 is connected to the upper end of the valve body 10 through a flange. The valve plate 12 is movably connected inside the valve body 10. The valve stem 14 is connected to the middle of the upper surface of the valve plate 12, and the middle section of the valve stem 14 is screwed to the middle of the bracket 11;

[0040] The valve body 10 provides a flow channel for the liquid medium. The bracket 11 plays a supporting role. The valve plate 12 plays a closing role. The valve stem 14 plays a connecting role and can control the up and down movement of the valve plate 12;

[0041] A bellows is hermetically connected between the inner top surface of the valve body 10 and the valve plate 12, and the bellows wraps the lower section of the valve stem 14;

[0042] A first connection assembly, which includes a first collar 20, a first through hole 21, a first through hole 22, a second through hole 23, a plug rod 24, a cylinder 25, a second through hole 26, a first latch 27, and a spring 28;

[0043] The first collar 20 is welded to the middle of the upper surface of the valve plate 12. The first through hole 21 is opened on the side of the first collar 20. The first through hole 22 is opened in the middle of the valve stem 14. The second through hole 23 is opened in the middle of the valve stem 14, and the first through hole 22 communicates with the second through hole 23. The plug rod 24 is inserted into the first through hole 22 and the second through hole 23. The cylinder 25 is welded to the top of the plug rod 24. The second through hole 26 is opened on the side of the second through hole 23. The first latch 27 is inserted into the first through hole 21 and the second through hole 26. One end of the spring 28 is fixed to the first latch 27, and the other end is fixed to the inner side wall of the second through hole 23;

[0044] The first collar 20 plays a connecting role. The first through hole 21 and the second through hole 26 play a limiting role. The first through hole 22 and the second through hole 23 play a connecting role. The plug rod 24 plays a limiting role. The cylinder 25 facilitates the operation of the plug rod 24. The first latch 27 plays a limiting role. The spring 28 has a reset function;

[0045] There are two groups of the first through hole 21 and the second through hole 26, which are symmetrically distributed in a ring shape;

[0046] There are two groups of the first clamping blocks 27 and springs 28, which are movably connected in the second through hole 23 and correspond to the positions of the first through hole 21 and the second through hole 26;

[0047] The main body assembly further includes a gasket 13 and a turntable 15;

[0048] The gasket 13 is fixed to the lower surface of the valve plate 12 by screws, and the turntable 15 is fixed to the top of the valve stem 14;

[0049] The gasket 13 functions as a seal, and the turntable 15 facilitates the operation of the valve stem 14.

[0050] Working principle:

[0051] When the valve stem 14 needs to be replaced, pull the cylinder 25 to drive the plug rod 24 out of the first through hole 22 and the second through hole 23. At this time, under the action of the spring 28, the first clamping block 27 moves along the first through hole 21 and the second through hole 26 and retracts into the second through hole 23, and then the valve stem 14 inserted in the first collar 20 can be pulled out;

[0052] When installing a new valve stem 14, rotate the valve stem 14 into the interior of the valve body 10 from the middle of the bracket 11, insert the lower end of the valve stem 14 into the first collar 20, hold the cylinder 25 by hand, insert the plug rod 24 into the first through hole 22 and the second through hole 23, hold the top of the valve stem 14 by hand, press the finger on the cylinder 25 and apply a downward force, and rotate the valve stem 14. When the first through hole 21 coincides with the second through hole 26, the cylinder 25 presses the plug rod 24 downward to drive the first clamping block 27 to move outward and engage in the first through hole 21 and the second through hole 26.

[0053] This step can quickly replace the valve stem 14 without disassembling the valve body 10.

[0054] Please refer to Figure 3 、 Figure 7 , on the basis of the above-mentioned Embodiment 1, this embodiment further includes:

[0055] A second connection assembly, which includes a second collar 30 and a card slot 32;

[0056] The second collar 30 is welded to the middle of the lower end of the turntable 15, and the card slot 32 is opened on the inner side wall of the second collar 30, and there are two in total, which are symmetrically distributed in a ring shape;

[0057] The second collar 30 functions as a connection, and the card slot 32 functions as a limit;

[0058] The second connection assembly includes a second clamping block 31 and a locking rod 33;

[0059] The second clamping block 31 is welded to the top of the valve stem 14, and the second clamping block 31 is inserted into the card slot 32, and the locking rod 33 penetrates and is screwed to the side of the second collar 30;

[0060] The second clamping block 31 plays a connecting role, and the locking rod 33 plays a limiting role.

[0061] Working principle:

[0062] Rotate the turntable 15 to raise the valve stem 14 to the highest position, loosen the locking rod 33, and move the valve stem 14. Drive the valve stem 14 and the second clamping block 31 at the upper end out of the second collar 30 and the card slot 32, and then when the valve stem 14 is removed from the valve body 10;

[0063] Replace the new valve stem 14. First, insert the valve stem 14 into the first collar 20 in the valve body 10, then hold the turntable 15, align the second collar 30 and the card slot 32 with the second clamping block 31 at the upper end of the valve stem 14 and press it down, and tighten the locking rod 33.

[0064] This step facilitates the quick disassembly of the valve stem 14 and the turntable 15.

[0065] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bellows globe valve facilitating valve stem replacement, characterized in that, Comprising: A main body assembly, the main body assembly including a valve body (10), a bracket (11), a valve plate (12) and a valve stem (14); The bracket (11) is connected to the upper end of the valve body (10) through a flange, the valve plate (12) is movably connected inside the valve body (10), the valve stem (14) is connected to the middle of the upper surface of the valve plate (12), and the middle section of the valve stem (14) is screwed to the middle of the bracket (11); A bellows is hermetically connected between the inner top surface of the valve body (10) and the valve plate (12), and the bellows wraps the lower section of the valve stem (14); A first connection assembly, the first connection assembly including a first collar (20), a first through hole (21), a first through opening (22), a second through opening (23), a plug rod (24), a cylinder (25), a second through hole (26), a first clamping block (27) and a spring (28); The first collar (20) is welded to the middle of the upper surface of the valve plate (12), the first through hole (21) is opened on the side of the first collar (20), the first through opening (22) is opened in the middle of the valve stem (14), the second through opening (23) is opened in the middle of the valve stem (14), and the first through opening (22) communicates with the second through opening (23). The plug rod (24) is inserted into the first through opening (22) and the second through opening (23). The cylinder (25) is welded to the top of the plug rod (24). The second through hole (26) is opened on the side of the second through opening (23). The first clamping block (27) is inserted into the first through hole (21) and the second through hole (26). One end of the spring (28) is fixed to the first clamping block (27), and the other end is fixed to the inner side wall of the second through opening (23).

2. The bellows globe valve according to claim 1, which is convenient for replacing the valve stem, is characterized in that There are two groups of the first through hole (21) and the second through hole (26), which are symmetrically distributed in a ring shape.

3. A bellows globe valve facilitating the replacement of a valve stem according to claim 1, characterized in that, There are two groups of the first clamping block (27) and the spring (28), which are movably connected in the second through opening (23) and correspond to the positions of the first through hole (21) and the second through hole (26).

4. A bellows globe valve facilitating valve stem replacement according to claim 1, characterized in that, The main body assembly further includes a gasket (13) and a turntable (15); The gasket (13) is fixed to the lower surface of the valve plate (12) by screws, and the turntable (15) is fixed to the top of the valve stem (14).

5. The bellows globe valve convenient for stem replacement according to claim 4, characterized in that, It further includes a second connection assembly; The second connection assembly includes a second collar (30) and a card slot (32); The second collar (30) is welded to the middle of the lower end of the turntable (15), the card slot (32) is opened on the inner side wall of the second collar (30), and there are two in total, which are symmetrically distributed in a ring shape.

6. The bellows globe valve convenient for valve stem replacement according to claim 5, characterized in that, The second connection assembly includes a second clamping block (31) and a locking rod (33); The second clamping block (31) is welded to the top of the valve stem (14), and the second clamping block (31) is inserted into the card slot (32). The locking rod (33) penetrates and is screwed to the side of the second collar (30).

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