Spring force release device of pneumatic control valve

Abstract

The utility model is suitable for the field of valve disassembly and assembly, and discloses a spring force release device of a pneumatic control valve. Comprising a screw rod matched with a threaded hole of the pneumatic control valve, a base assembly which is connected to the screw rod in a sleeving mode and abuts against the pneumatic control valve, a rotating assembly which is arranged on the screw rod in a sleeving mode and rotates relative to the base assembly, and an adjusting piece which abuts against the upper portion of the rotating assembly and is in threaded connection with the screw rod. The screw rod is screwed into a threaded hole of the pneumatic adjusting valve, the base assembly is connected to the screw rod in a sleeved mode and abuts against a cover of the starting adjusting valve, the rotating assembly is connected to the screw rod in a sleeved mode and placed on the base assembly, then the adjusting piece is screwed into the screw rod till the adjusting piece abuts against the rotating assembly, and then other screws on the cover of the starting adjusting valve are loosened. When the adjusting piece is slowly twisted upwards, the spring force is gradually released, an operator can accurately control the release rate of the spring force, the operation safety is ensured, and the whole device is simple in structure, extremely high in efficiency and capable of being matched with various different pneumatic adjusting valves.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve dismounting field especially relates to a pneumatic regulating valve spring force release device. BACKGROUND

[0002] Valve spring adjusting screw design, pneumatic execution cannot directly release spring force in the disintegration process, the internal spring assembly of pneumatic regulating valve cannot be disassembled and cleaned, endoscopic examination cannot completely replace all contents of disintegration inspection due to its space limitation, and therefore the perpendicularity and stiffness of the spring cannot be checked, and other spring assemblies such as spring seat and support plate cannot be checked and cleaned, and there is an urgent need for a device that can solve the problems of spring force release and pre-tightening. SUMMARY

[0003] The utility model provides a pneumatic regulating valve spring force release device.

[0004] The utility model discloses a technical scheme that is adopted to solve its technical problem: a kind of pneumatic regulating valve spring force release device is structured, comprising: screw rod matched with pneumatic regulating valve screw hole, base assembly being sleeved on the screw rod and being abutted with pneumatic regulating valve, rotating assembly being sleeved on the screw rod and being opposite rotation with the base assembly, adjusting piece being abutted above the rotating assembly and being threadedly connected with the screw rod.

[0005] In some embodiments, the rotating assembly is a thrust bearing.

[0006] In some embodiments, the upper portion of the base assembly is provided with a mounting groove matched with the shape of the thrust bearing and a first through hole sleeved with the screw rod.

[0007] In some embodiments, the thrust bearing is further provided with a bearing cover sleeved on the screw rod above, and the lower portion of the bearing cover is provided with a placing groove for accommodating the thrust bearing.

[0008] In some embodiments, the center of the bearing cover is provided with a second through hole matched with the outer diameter size of the screw rod, and the diameter of the second through hole is smaller than the outer diameter of the adjusting piece and larger than the outer diameter of the screw rod.

[0009] In some embodiments, the diameter of the first through hole is at least 1mm larger than the outer diameter of the screw rod, and the diameter of the second through hole is at least 1mm larger than the outer diameter of the screw rod.

[0010] In some embodiments, the first through hole and the second through hole are chamfered at the orifice.

[0011] In some embodiments, the adjusting piece is further provided with a back-tightening assembly threadedly connected with the screw rod and self-locked on the screw rod above.

[0012] In some embodiments, the back-tightening assembly includes a lower nut disposed above the rotating assembly and threadedly connected with the screw rod, and an upper nut disposed above the lower nut and threadedly connected with the screw rod, the lower nut and the upper nut combined into a self-locking nut structure.

[0013] In some embodiments, the base assembly is knurled near the bottom surface of the pneumatic control valve to form a rough plane.

[0014] The utility model discloses a kind of spring force release devices of pneumatic control valve, with following beneficial effects: screw rod is screwed into the threaded hole of pneumatic control valve, base assembly is sleeved on screw rod and abuts to the lid of starting regulating valve, rotating assembly is sleeved on screw rod and placed on base assembly, then adjusting piece is screwed into screw rod until abutting to rotating assembly, then other screws on the lid of starting regulating valve are loosened, adjusting piece is slowly twisted upwards, gradually spring force is released, operator can accurately control the release rate of spring force, ensure operation safety, and the whole device structure is simple, efficiency is extremely high, can be adapted to various different pneumatic control valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in conjunction with the drawings and examples, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, on the premise of not paying creative labor, other related drawings can also be obtained according to these drawings. In the drawings:

[0016] Figure 1 It is the overall view of a kind of spring force release device of pneumatic control valve in an embodiment of the utility model;

[0017] Figure 2 It is the structure diagram of pneumatic control valve of a kind of spring force release device of pneumatic control valve in an embodiment of the utility model.

[0018] Reference signs

[0019] 100, screw rod; 110, adjusting piece; 200, base assembly; 210, bearing cover; 300, rotating assembly; 400, back-tightening assembly; 401, lower nut; 402, upper nut; 500, pneumatic control valve; 510, threaded hole. DETAILED DESCRIPTION

[0020] In order to have a clearer understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the orientation or positional relationship indicated by "upper", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is constructed and operated in a particular orientation, only for the convenience of describing the present technical solution, and does not indicate that the device or element referred to must have a particular orientation, so it cannot be understood as a limitation on the present application.

[0021] It should be further noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "fixing", "setting", etc. should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] Figures 1 to 2 A kind of pneumatic regulating valve spring force release device in an embodiment of the present application is shown, which can be used for the release of spring force in pneumatic regulating valve, it can include screw rod 100 matched with the screw hole 510 of pneumatic regulating valve 500, base assembly 200 that is sleeved on screw rod 100 and is in abutment with pneumatic regulating valve, rotating assembly 300 that is sleeved on screw rod 100 and is opposite rotation with base assembly 200, adjusting piece 110 in abutment above rotating assembly 300 and threaded connection with screw rod 100.

[0023] The screw rod 100 is screwed into the threaded hole 510 of the pneumatic regulating valve 500, the base assembly 200 is sleeved on the screw rod 100 and abuts against the cover of the starting regulating valve, the rotating assembly 300 is sleeved on the screw rod 100 and placed on the base assembly 200, then the adjusting member 110 is screwed into the screw rod 100 until abutting against the rotating assembly 300, then the other screws on the cover of the starting regulating valve are loosened, the adjusting member 110 is slowly twisted upward, the spring force is gradually released, the operator can accurately control the release rate of the spring force, the safety of operation is ensured, the whole device has simple structure and high efficiency, and can be adapted to various pneumatic regulating valves 500.

[0024] It can be understood that the screw rod 100 can be threaded in full length or partially threaded.

[0025] It can be understood that when the rotating assembly 300 is abutted by the adjusting member 110, the friction between the rotating assembly 300 and the base assembly 200 is much smaller than the friction between the base assembly 200 and the pneumatic regulating valve 500, so that the rotating assembly 300 can rotate relative to the base assembly 200 under pressure.

[0026] In a specific embodiment, the screw rod 100 is inserted into the threaded hole of the pneumatic regulating valve 500, and the threaded diameter of the part of the pneumatic regulating valve 500 is different from that of the other part.

[0027] Figure 1 It is shown that in an embodiment, the rotating assembly 300 can include a thrust bearing, which can bear a large radial load and can produce relative rotation under a large load.

[0028] In a specific embodiment, the thrust bearing is preferably a thrust ball bearing, which has small volume and is easier to install.

[0029] Figure 1 It is shown that in an embodiment, the base assembly 200 can include a first through hole for sleeving the screw rod 100 and a mounting groove matched with the shape of the thrust bearing on the upper part of the base assembly 200, the mounting groove can limit the position of the thrust bearing and prevent the thrust bearing from deviating from the original position.

[0030] Figure 1The thrust bearing can further include a bearing cover 210 sleeved on the screw rod 100 above the thrust bearing in an embodiment. The bearing cover 210 is provided with a placing groove for accommodating the thrust bearing at the lower portion. When the bearing cover 210 is sleeved on the thrust bearing, the adjusting member 110 directly abuts against the bearing cover 210 to apply pressure to the bearing cover 210. Because the adjusting member 110 has a small volume and a small contact area with the thrust bearing, the small contact area causes a local high pressure, which is likely to cause damage to the thrust bearing due to the local high pressure. The bearing cover 210 can increase the contact area and reduce the local pressure, thereby prolonging the service life of the thrust bearing and protecting the thrust bearing from external influences.

[0031] Figure 1 The first shielding unit can further include a second through hole with a diameter matching the outer diameter of the screw rod 100 at the center of the bearing cover 210 in an embodiment. The diameter of the second through hole is smaller than the outer diameter of the adjusting member 110 and larger than the outer diameter of the screw rod 100, which can prevent the adjusting member 110 from being trapped in the second through hole.

[0032] Figure 1 The first shielding unit can further include a first through hole with a diameter at least 1 mm larger than the outer diameter of the screw rod 100 and a second through hole with a diameter at least 1 mm larger than the outer diameter of the screw rod 100 in an embodiment. Because the contact surface of the base assembly 200 and the pneumatic regulating valve 500 is not completely horizontal, there is a certain inclination, which can cause the base assembly 200 and the bearing cover 210 to be stuck with the screw rod 100. At least 1 mm of space is required to ensure clearance to prevent sticking.

[0033] Figure 1 The first shielding unit can further include chamfered hole openings of the first through hole and the second through hole in an embodiment, which can prevent the first through hole and the second through hole from being abutted and stuck with the screw rod 100.

[0034] Figure 1 The first shielding unit can further include a back-tightening assembly 400 above the adjusting member 110 and threadedly connected with the screw rod 100 and self-locked on the screw rod 100 in an embodiment. The back-tightening assembly 400 can facilitate the user to hold the back-tightening assembly 400 by a tool to twist the entire device. Directly holding the screw rod 100 can easily damage the threads.

[0035] Figure 1 The first shielding unit can further include that the back-tightening assembly 400 includes a lower nut 401 arranged above the rotating assembly 300 and threadedly connected with the screw rod 100, and an upper nut 402 arranged above the lower nut 401 and threadedly connected with the screw rod 100. The lower nut 401 and the upper nut 402 are combined into a self-locking nut structure. The user can hold the back-tightening assembly 400 by the self-locking nut structure to twist the entire device.

[0036] Figure 1 It is shown that the first shielding unit can include a rough plane formed by knurling the bottom surface of the base assembly 200 close to the pneumatic regulating valve 500 in an embodiment, and the rough plane can increase the friction of the bottom surface to prevent the base assembly 200 from rotating relative to the pneumatic regulating valve 500.

[0037] It can be understood that the above embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application patent; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A pneumatic regulating valve spring force release device, characterized in that, include: A screw (100) that matches the threaded hole (510) of the pneumatic regulating valve (500), a base assembly (200) that is sleeved on the screw (100) and abuts against the pneumatic regulating valve (500), a rotating assembly (300) that is sleeved on the screw (100) and rotates relative to the base assembly (200), and an adjusting member (110) that abuts against the rotating assembly (300) and is threadedly connected to the screw (100).

2. The pneumatic regulating valve spring force release device according to claim 1, characterized in that, The rotating assembly (300) is a thrust bearing.

3. The pneumatic regulating valve spring force release device according to claim 2, characterized in that, The upper part of the base assembly (200) is provided with a mounting groove that matches the shape of the thrust bearing and a first through hole that fits into the screw (100).

4. The pneumatic regulating valve spring force release device according to claim 3, characterized in that, Above the thrust bearing is a bearing cover (210) sleeved on the screw (100), and the lower part of the bearing cover (210) is provided with a placement groove for accommodating the thrust bearing.

5. A pneumatic regulating valve spring force release device according to claim 4, characterized in that, The bearing housing (210) has a second through hole at its center that matches the outer diameter of the screw (100). The diameter of the second through hole is smaller than the outer diameter of the adjusting member (110) and larger than the outer diameter of the screw (100).

6. A pneumatic regulating valve spring force release device according to claim 5, characterized in that, The diameter of the first through hole is at least 1 mm larger than the outer diameter of the screw (100), and the diameter of the second through hole is at least 1 mm larger than the outer diameter of the screw (100).

7. A pneumatic regulating valve spring force release device according to claim 5, characterized in that, Both the openings of the first through hole and the second through hole are chamfered.

8. The pneumatic regulating valve spring force release device according to claim 1, characterized in that, The adjusting member (110) is also provided with a back tightening component (400) that is threadedly connected to the screw (100) and can be self-locked onto the screw (100).

9. A pneumatic regulating valve spring force release device according to claim 8, characterized in that, The back-tightening assembly (400) includes a lower nut (401) disposed above the rotating assembly (300) and threadedly connected to the screw (100), and an upper nut (402) disposed above the lower nut (401) and threadedly connected to the screw (100). The lower nut (401) and the upper nut (402) are combined to form a self-locking nut structure.

10. A pneumatic regulating valve spring force release device according to claim 1, characterized in that, The bottom surface of the base assembly (200) near the pneumatic regulating valve (500) is knurled to form a rough surface.

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