Assembly adjusting tool for safety valve

Abstract

The utility model relates to the technical field of safety valve production equipment, and provides an assembling and adjusting tool for a safety valve, which is used for locking a spring sleeved on a valve rod between a base and an adjusting sleeve, the adjusting sleeve is sleeved on the valve rod and is clamped between the spring and a locking nut, the locking nut is in threaded connection with the valve rod, the valve rod is arranged on the base, and the adjusting sleeve is arranged on the base. The top plate is located above the bottom plate, an operation hole is formed in the top plate, the top plate is used for pressing the adjusting sleeve, and the operation hole is used for allowing the valve rod and the locking nut to penetrate through and tightening the locking nut; the supporting rod is arranged between the bottom plate and the top plate; the sliding supporting plate is located between the bottom plate and the top plate and used for bearing the base. The sliding supporting plate gets close to or away from the top plate through stretching of the linear driving mechanism. According to the technical scheme, the problems that time and labor are wasted and the production efficiency is low due to the fact that the adjusting sleeve descends, the spring is compressed to the required length and clamped between the adjusting sleeve and the base when the locking nut is in threaded connection with the valve rod manually in the related technology are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valve production equipment, in particular to an assembly and adjustment tool for a safety valve. Background Art

[0002] A safety valve is an automatic valve installed on various pressure-bearing equipment (such as boilers, pressure vessels, pipeline systems, etc.). Its main function is to automatically open and release part of the medium (such as steam, gas or liquid) when the internal pressure of the equipment or system exceeds the predetermined safety value, thereby protecting the equipment, pipeline system and the surrounding environment from overpressure damage. The safety valve is an important safety protection device in pressure vessels and pressure pipeline systems. When the safety valve is produced, the spring needs to be installed on the valve stem and clamped between the base and the adjusting sleeve. Now it is generally manual to put the spring on the valve stem so that the lower end of the spring contacts the base, then put the adjusting sleeve on the valve stem, and then thread the locking nut with the valve stem, so that the adjusting sleeve drops, compresses the spring to the required length, and clamps it between the adjusting sleeve and the base, which is time-consuming and labor-intensive, and has low production efficiency. Utility Model Content

[0003] The utility model provides an assembly adjustment tool for a safety valve, which solves the problem in the related art that a locking nut is manually threadedly connected to a valve stem, thereby lowering an adjustment sleeve, compressing a spring to a required length, and clamping the spring between the adjustment sleeve and a base, which is time-consuming, labor-intensive, and has low production efficiency.

[0004] The technical solution of the utility model is as follows: an assembly adjustment tool for a safety valve, which is used to lock a spring sleeved on a valve stem between a base and an adjustment sleeve, wherein the adjustment sleeve is sleeved on the valve stem and clamped between the spring and a locking nut, wherein the locking nut is threadedly connected to the valve stem, and the valve stem is arranged on the base. The key lies in: comprising:

[0005] Bottom plate,

[0006] A top plate, the top plate is located above the bottom plate, an operation hole is opened on the top plate, the top plate is used to press the adjustment sleeve, the operation hole is used to pass the valve stem and the locking nut, and is used to tighten the locking nut;

[0007] A support rod, the support rod being arranged between the bottom plate and the top plate;

[0008] A sliding support plate, the sliding support plate is located between the bottom plate and the top plate, and is used to support the base;

[0009] A linear drive mechanism, wherein the sliding support plate moves closer to or farther from the top plate by means of the extension and retraction of the linear drive mechanism.

[0010] The support rod is plugged into the sliding support plate to form a sliding fit.

[0011] It also includes a bearing, which is arranged on the sliding support plate, and the sliding support plate forms a sliding fit with the support rod by means of the bearing.

[0012] A limiting groove is provided on the sliding support plate, and the base is engaged with the limiting groove.

[0013] It also includes a transition plate, the linear drive mechanism is arranged on the bottom plate, and the transition plate is arranged between the linear drive mechanism and the sliding support plate.

[0014] The transition plate comprises:

[0015] A lower plate body, wherein the lower plate body is arranged at an upper end of the linear drive mechanism;

[0016] An intermediate plate body, which is disposed at both ends of the lower plate body;

[0017] An upper plate body is arranged between the middle plate body and the sliding support plate, and the upper plate body is located outside the middle plate body.

[0018] The upper plate body and the sliding support plate are detachably connected.

[0019] The support rod and the bottom plate, and the support rod and the top plate are all detachably connected.

[0020] Also includes,

[0021] An upper fastening nut, the upper fastening nut being threadedly connected to the upper end of the support rod, the upper fastening nut being located above the top plate;

[0022] A lower fastening nut, the lower fastening nut being threadedly connected to the lower end of the support rod, the lower fastening nut being located below the bottom plate;

[0023] An upper spring washer, the upper spring washer is sleeved on the periphery of the support rod and is located between the top plate and the upper fastening nut;

[0024] A lower spring washer is sleeved on the periphery of the support rod and is located between the bottom plate and the lower fastening nut.

[0025] The bearing and the sliding support plate are detachably connected.

[0026] The working principle and beneficial effects of the utility model are as follows: the top plate is located above the bottom plate, an operating hole is opened on the top plate, the top plate is used to compress the adjustment sleeve, the operating hole is used to pass the valve stem and the locking nut, and is used to tighten the locking nut; the support rod is arranged between the bottom plate and the top plate; the sliding support plate is located between the bottom plate and the top plate, and is used to support the base; the sliding support plate is moved closer to or away from the top plate by means of the extension and retraction of the linear drive mechanism. During assembly, first put the spring onto the valve stem on the base, then put the adjusting sleeve onto the valve stem, the adjusting sleeve is located above the spring, then the locking nut is threadedly connected to the valve stem, then the base is placed on the sliding support plate, and the valve stem and the locking nut are located below the operating hole opened on the top plate, then the linear drive mechanism is activated to push the sliding support plate toward the top plate, and the base also drives the components on it to move synchronously toward the top plate, the adjusting sleeve contacts the top plate, the valve stem and the locking nut enter the operating hole, the linear drive mechanism continues to act, the top plate and the adjusting sleeve do not move, the base continues to move toward the top plate, the spring is compressed, the valve stem and the locking nut move up, and when the spring is compressed to the required length, the linear drive mechanism stops, and the locking nut is tightened at the operating hole so that the lower end face of the locking nut contacts the upper end face of the adjusting sleeve. Mechanized operation saves time and effort and can improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0028] Figure 1 It is a schematic diagram of the structure of the utility model when it is used specifically.

[0029] Figure 2 It is a structural schematic diagram of the utility model.

[0030] In the figure: 1, bottom plate, 2, top plate, 3, support rod, 4, sliding support plate, 5, linear drive mechanism, 6, operating hole, 7, bearing, 8, limit groove, 9, transition plate, 9-1, lower plate body, 9-2, middle plate body, 9-3, upper plate body, 10, upper fastening nut, 11, lower fastening nut, 12, upper spring washer, 13, lower spring washer, 14, valve stem, 15, spring, 16, base, 17, adjusting sleeve, 18, locking nut. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0032] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] Example, see Figure 1~Figure 2 , which is an embodiment of the utility model, proposes an assembly adjustment tool for a safety valve, which is used to lock the spring 15 sleeved on the valve stem 14 between the base 16 and the adjustment sleeve 17. The adjustment sleeve 17 is sleeved on the valve stem 14 and clamped between the spring 15 and the locking nut 18. The locking nut 18 is threadedly connected to the valve stem 14. The valve stem 14 is arranged on the base 16, including a bottom plate 1, a top plate 2, a support rod 3, a sliding support plate 4, and a linear drive mechanism 5. The top plate 2 is located above the bottom plate 1, and an operation hole 6 is opened on the top plate 2. The top plate 2 is used to press the adjustment sleeve 17. The operation hole 6 is used to pass the valve stem 14 and the locking nut 18, and is used to tighten the locking nut 18; the support rod 3 is arranged between the bottom plate 1 and the top plate 2; the sliding support plate 4 is located between the bottom plate 1 and the top plate 2, and is used to support the base 16; the sliding support plate 4 is close to or away from the top plate 2 by means of the extension and retraction of the linear drive mechanism 5.

[0036] Furthermore, if Figure 1 and Figure 2 As shown, the support rod 3 is plugged with the sliding support plate 4 to form a sliding fit. During the lifting process of the sliding support plate 4, the support rod 3 can guide and limit the sliding support plate 4 to prevent the sliding support plate 4 from deflecting during the lifting process, and the stability is better.

[0037] Furthermore, if Figure 1 and Figure 2As shown, the sliding support plate 4 also includes a bearing 7, which is arranged on the sliding support plate 4. The sliding support plate 4 forms a sliding fit with the support rod 3 by means of the bearing 7. The bearing 7 can prevent the sliding support plate 4 from directly contacting the support rod 3 and generating friction during the lifting process, thereby extending the service life of the sliding support plate 4 and reducing the friction force on the sliding support plate 4 during the lifting process.

[0038] Furthermore, if Figure 1 and Figure 2 As shown, a limiting groove 8 is provided on the sliding support plate 4, and the base 16 is engaged with the limiting groove 8. The lower end of the base 16 is placed in the limiting groove 8, which can position the base 16 and prevent the base 16 from deflecting during the lifting process.

[0039] Furthermore, if Figure 1 and Figure 2 As shown, a transition plate 9 is also included, the linear drive mechanism 5 is arranged on the bottom plate 1, and the transition plate 9 is arranged between the linear drive mechanism 5 and the sliding support plate 4. Compared with directly connecting the linear drive mechanism 5 and the sliding support plate 4 together, connecting the linear drive mechanism 5 and the sliding support plate 4 together using the transition plate 9 can reduce the telescopic range of the linear drive mechanism 5, reduce the requirements for the linear drive mechanism 5, and save costs.

[0040] Furthermore, if Figure 1 and Figure 2 As shown, the transition plate 9 includes a lower plate 9-1, an intermediate plate 9-2, and an upper plate 9-3. The lower plate 9-1 is arranged at the upper end of the linear drive mechanism 5; the intermediate plate 9-2 is arranged at both ends of the lower plate 9-1; the upper plate 9-3 is arranged between the intermediate plate 9-2 and the sliding support plate 4, and the upper plate 9-3 is located outside the intermediate plate 9-2. The intermediate plate 9-2 is arranged at both ends of the lower plate 9-1, and the upper plate 9-3 is arranged at the upper ends of the left and right intermediate plates 9-2. This frame structure can reduce the overall weight of the transition plate 9 while meeting the height requirements.

[0041] Furthermore, the upper plate body 9 - 3 and the sliding support plate 4 are detachably connected, so that the sliding support plate 4 can be easily removed for replacement.

[0042] Furthermore, the support rod 3 and the bottom plate 1, and the support rod 3 and the top plate 2 are all detachably connected. When not in use, the support rod 3 and the bottom plate 1, and the top plate 2 are separated for easy individual transportation and placement.

[0043] Furthermore, if Figure 1 and Figure 2As shown, it also includes an upper fastening nut 10, a lower fastening nut 11, an upper spring washer 12, and a lower spring washer 13. The upper fastening nut 10 is threadedly connected to the upper end of the support rod 3, and the upper fastening nut 10 is located above the top plate 2; the lower fastening nut 11 is threadedly connected to the lower end of the support rod 3, and the lower fastening nut 11 is located below the bottom plate 1; the upper spring washer 12 is sleeved on the outer periphery of the support rod 3 and is located between the top plate 2 and the upper fastening nut 10; the lower spring washer 13 is sleeved on the outer periphery of the support rod 3 and is located between the bottom plate 1 and the lower fastening nut 11. By removing the lower fastening nut 11 and the lower spring washer 13, the bottom plate 1 can be removed from the support rod 3, and by removing the upper fastening nut 10 and the upper spring washer 12, the top plate 2 can be removed from the support rod 3. The support rod 3 includes an intermediate rod body, an upper rod body and a lower rod body. The diameters of the upper rod body and the lower rod body are smaller than the diameter of the intermediate rod body, so there is a support surface between the upper rod body and the intermediate rod body, and between the lower rod body and the intermediate rod body. The top plate 2 is clamped between the upper support surface and the upper spring washer 12, and the bottom plate 1 is clamped between the lower support surface and the lower spring washer 13. The structure is simple, and the disassembly and assembly are convenient and fast, saving time and effort. The upper spring washer 12 can prevent the upper fastening nut 10 from loosening, and the lower spring washer 13 can prevent the lower fastening nut 11 from loosening.

[0044] Furthermore, the bearing 7 and the sliding support plate 4 are detachably connected. When the bearing 7 cannot meet the use requirements, it can be disassembled and replaced with a new bearing 7 without replacing the sliding support plate 4, which can save costs.

[0045] In this embodiment, the bottom plate 1, the linear drive mechanism 5, the transition plate 9, the sliding support plate 4, and the top plate 2 are arranged in sequence from bottom to top, an operating hole 6 is opened at the center of the top plate 2, a limiting groove 8 is opened on the sliding support plate 4, and four support rods 3 are arranged in a matrix. The upper ends of the support rods 3 are plugged into the top plate 2, the lower ends are plugged into the bottom plate 1, and the middle parts are plugged into the sliding support plate 4. The bottom plate 1 is clamped between the supporting surface below the support rod 3 and the lower spring washer 13, and the top plate 2 is clamped between the supporting surface above the support rod 3 and the upper spring washer 12. The upper fastening nut 10 and the lower fastening nut 11 play a locking role.

[0046] During assembly, first, the spring 15 is mounted on the valve stem 14 located on the base 16, and then the adjusting sleeve 17 is mounted on the valve stem 14, the adjusting sleeve 17 is located above the spring 15, and then the locking nut 18 is threadedly connected to the valve stem 14, and then the base 16 is placed in the limiting groove 8 on the sliding support plate 4, and the valve stem 14 and the locking nut 18 are located below the operating hole 6 opened on the top plate 2, and then the linear drive mechanism 5 is activated to push the sliding support plate 4 to move toward the top plate 2, and the base 16 also drives the components thereon It moves synchronously toward the top plate 2, the adjusting sleeve 17 contacts the top plate 2, the valve stem 14 and the locking nut 18 enter the operating hole 6, the linear drive mechanism 5 continues to move, the top plate 2 and the adjusting sleeve 17 do not move, the base 16 continues to move toward the top plate 2, the spring 15 is compressed, the valve stem 14 and the locking nut 18 move upward, and when the spring 15 is compressed to the required length, the linear drive mechanism 5 stops moving, and the locking nut 18 is tightened at the operating hole 6, so that the lower end surface of the locking nut 18 contacts the upper end surface of the adjusting sleeve 17. Mechanized operation saves time and labor, and can improve production efficiency.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An assembly adjustment tool for a safety valve, used for locking a spring (15) sleeved on a valve stem (14) between a base (16) and an adjustment sleeve (17), wherein the adjustment sleeve (17) is sleeved on the valve stem (14) and clamped between the spring (15) and a locking nut (18), wherein the locking nut (18) is threadedly connected to the valve stem (14), and the valve stem (14) is arranged on the base (16), characterized in that: include, Bottom plate (1), A top plate (2), the top plate (2) being located above the bottom plate (1), and having an operating hole (6) formed on the top plate (2), the top plate (2) being used to compress the adjustment sleeve (17), the operating hole (6) being used to pass the valve stem (14) and the locking nut (18), and being used to tighten the locking nut (18); A support rod (3), the support rod (3) being arranged between the bottom plate (1) and the top plate (2); A sliding support plate (4), the sliding support plate (4) being located between the bottom plate (1) and the top plate (2) and being used to support the base (16); A linear drive mechanism (5), wherein the sliding support plate (4) moves closer to or farther from the top plate (2) by means of the extension and retraction of the linear drive mechanism (5).

2. The assembly and adjustment tool for the safety valve according to claim 1, characterized in that: The support rod (3) is plugged into the sliding support plate (4) to form a sliding fit.

3. The assembly and adjustment tool for the safety valve according to claim 2, characterized in that: It also comprises a bearing (7), wherein the bearing (7) is arranged on the sliding support plate (4), and the sliding support plate (4) forms a sliding fit with the support rod (3) by means of the bearing (7).

4. The assembly and adjustment tool for the safety valve according to claim 1, characterized in that: A limiting groove (8) is provided on the sliding support plate (4), and the base (16) is snap-connected with the limiting groove (8).

5. The assembly and adjustment tool for the safety valve according to claim 1, characterized in that: It also comprises a transition plate (9), the linear drive mechanism (5) is arranged on the base plate (1), and the transition plate (9) is arranged between the linear drive mechanism (5) and the sliding support plate (4).

6. The assembly and adjustment tool for the safety valve according to claim 5, characterized in that: The transition plate (9) comprises: A lower plate body (9-1), wherein the lower plate body (9-1) is arranged at the upper end of the linear drive mechanism (5); An intermediate plate body (9-2), wherein the intermediate plate body (9-2) is disposed at both ends of the lower plate body (9-1); An upper plate body (9-3), wherein the upper plate body (9-3) is arranged between the middle plate body (9-2) and the sliding support plate (4), and the upper plate body (9-3) is located outside the middle plate body (9-2).

7. The assembly and adjustment tool for the safety valve according to claim 6, characterized in that: The upper plate body (9-3) and the sliding support plate (4) are detachably connected.

8. The assembly and adjustment tool for the safety valve according to claim 1, characterized in that: The support rod (3) and the bottom plate (1), as well as the support rod (3) and the top plate (2) are both detachably connected.

9. The assembly and adjustment tool for the safety valve according to claim 8, characterized in that: Also includes, an upper fastening nut (10), the upper fastening nut (10) being threadedly connected to the upper end of the support rod (3), the upper fastening nut (10) being located above the top plate (2); A lower fastening nut (11), the lower fastening nut (11) being threadedly connected to the lower end of the support rod (3), the lower fastening nut (11) being located below the bottom plate (1); An upper spring washer (12), the upper spring washer (12) being sleeved on the periphery of the support rod (3) and being located between the top plate (2) and the upper fastening nut (10); A lower spring washer (13), the lower spring washer (13) being sleeved on the periphery of the support rod (3) and being located between the bottom plate (1) and the lower fastening nut (11).

10. The assembly and adjustment tool for the safety valve according to claim 3, characterized in that: The bearing (7) and the sliding support plate (4) are detachably connected.

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