Valve capable of accurately controlling flow

Abstract

The utility model relates to the technical field of valves, in particular to a valve capable of accurately controlling flow, which comprises a butterfly valve, a high platform is integrally formed at the upper end of the butterfly valve, a communicating pipe is arranged at the top end of the high platform, and an adjusting mechanism is arranged in the communicating pipe. The mounting seat is fixedly mounted at the top end of the communicating pipe, a lifting sleeve is movably mounted in the middle of the mounting seat, and a positioning mechanism is arranged between the lifting sleeve and the communicating pipe. The threaded rod, the lifting sleeve, the guide rods, the rotating shaft, the guide grooves, the valve rod and the valve plate are used in cooperation, the hand wheel controls the threaded rod to rotate, the threaded rod rotates to drive the lifting sleeve to linearly descend, and when the lifting sleeve descends, the guide rods on the two sides of the inner wall are driven to slide in the guide grooves in the two sides of the rotating shaft, so that linear motion can be converted into rotating motion; when the rotating shaft rotates, the valve rod is driven to open and close the valve plate, the flow is controlled by adjusting the opening angle of the valve plate, and therefore the purpose of convenient adjustment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve capable of accurately controlling flow. Background Art

[0002] A valve is a device used to control the flow of fluid, usually used in pipeline systems. It can control parameters such as fluid flow, direction, pressure and temperature, thereby achieving control and regulation of the pipeline system. A butterfly valve is a common fluid control valve, and its name comes from the fact that the shape of its working part resembles the wings of a butterfly.

[0003] At present, the existing butterfly valve is usually unable to accurately understand the opening state of the valve plate when switching or adjusting the flow of the valve fluid, so the accuracy is not high when adjusting the valve flow. Therefore, it is necessary to design a valve that can accurately control the flow. Utility Model Content

[0004] The purpose of the utility model is to provide a valve which can accurately control the flow rate, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A valve capable of accurately controlling flow rate, comprising

[0007] A butterfly valve, wherein a platform is integrally formed on the upper end of the butterfly valve, a connecting pipe is arranged on the top of the platform, and an adjusting mechanism is arranged inside the connecting pipe;

[0008] The mounting seat is fixedly mounted on the top end of the connecting pipe, a lifting sleeve is movably mounted on the middle part of the mounting seat, and a positioning mechanism is arranged between the lifting sleeve and the connecting pipe.

[0009] Preferably, the regulating mechanism comprises a valve stem, the valve stem is movably mounted on the inner middle part of the butterfly valve, a valve plate is arranged on one side of the bottom end of the valve stem, a rotating shaft is fixedly connected to the top end of the valve stem, and guide grooves are arranged on both sides of the rotating shaft;

[0010] Preferably, the adjustment mechanism further comprises a threaded rod, the threaded rod is movably mounted at the middle of the top of the mounting seat, the middle of the top of the lifting sleeve is threadedly connected to the threaded rod, guide rods slidably connected to the guide grooves are symmetrically arranged on both sides of the inner wall of the bottom end of the lifting sleeve, and a hand wheel is arranged at the top of the threaded rod;

[0011] Preferably, the positioning mechanism comprises an arc-shaped groove, both sides of the lifting sleeve are slidably connected to the arc-shaped groove, and both sides of the lifting sleeve outer wall are provided with scales;

[0012] Preferably, the positioning mechanism further comprises a slide groove, the slide groove is arranged in the middle of the inner side of the arc groove, and both sides of the bottom end of the lifting sleeve are provided with sliders slidably connected with the slide groove;

[0013] Preferably, a sealing member is provided on the inner wall of the top end of the platform, and the sealing member is movably connected to the valve stem.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. This valve can accurately control the flow rate. It is used in conjunction with a threaded rod, a lifting sleeve, a guide rod, a rotating shaft, a guide groove, a valve stem and a valve plate. The handwheel controls the rotation of the threaded rod. After the threaded rod rotates, the lifting sleeve is driven to descend linearly. When the lifting sleeve descends, it drives the guide rods on both sides of the inner wall to slide in the guide grooves on both sides of the rotating shaft. In this way, the linear motion can be converted into rotational motion. When the rotating shaft rotates, it drives the valve stem to open and close the valve plate, and the flow rate is controlled by adjusting the opening angle of the valve plate, thereby achieving the purpose of easy adjustment.

[0016] 2. This valve can accurately control the flow rate. It is used in conjunction with the mounting seat, arc groove, lifting sleeve and scale. When the handwheel controls the threaded rod to rotate, the threaded rod drives the lifting sleeve to slide down along the inside of the arc groove. In this way, when adjusting, the opening angle of the valve plate can be accurately controlled by observing the position of the scale, thereby accurately controlling the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the top view of the arc groove structure of the utility model;

[0020] Figure 4 This is a bottom view structural diagram of the lifting sleeve of the utility model;

[0021] Figure 5 For the utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0022] Figure 6 For the utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0023] In the figure: 1. butterfly valve; 2. platform; 3. connecting pipe; 4. mounting seat; 5. lifting sleeve; 6. valve stem; 7. valve plate; 8. rotating shaft; 9. guide groove; 10. threaded rod; 11. guide rod; 12. arc groove; 13. scale; 14. slide groove; 15. slider; 16. seal. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-6 As shown, a technical solution provided by the utility model:

[0026] A valve capable of precisely controlling flow rate, comprising a butterfly valve 1, wherein a platform 2 is integrally formed at the upper end of the butterfly valve 1, a connecting pipe 3 is arranged at the top end of the platform 2, an adjusting mechanism is arranged inside the connecting pipe 3, the adjusting mechanism comprising a valve stem 6, the valve stem 6 is movably mounted at the middle part of the inner side of the butterfly valve 1, a valve plate 7 is arranged at one side of the bottom end of the valve stem 6, a rotating shaft 8 is fixedly connected to the top end of the valve stem 6, guide grooves 9 are arranged oppositely on both sides of the rotating shaft 8, the adjusting mechanism further comprises a threaded rod 10, the threaded rod 10 is movably mounted at the middle part of the top end of the mounting seat 4, the middle part of the top end of the lifting sleeve 5 is threadedly connected to the threaded rod 10, guide rods 11 slidably connected to the guide grooves 9 are symmetrically arranged on both sides of the inner wall of the bottom end of the lifting sleeve 5, and a hand wheel is arranged at the top end of the threaded rod 10;

[0027] In this embodiment, when adjusting, the hand wheel is turned, and the hand wheel controls the threaded rod 10 to rotate. After the threaded rod 10 rotates, it drives the lifting sleeve 5 to descend linearly. When the lifting sleeve 5 descends, it drives the guide rods 11 on both sides of the inner wall to slide along the guide grooves 9 on both sides of the rotating shaft 8. In this way, the linear motion can be converted into rotational motion. When the rotating shaft 8 rotates, it drives the valve stem 6 to open and close the valve plate 7, and the flow rate is controlled by adjusting the opening angle of the valve plate 7, thereby achieving the purpose of easy adjustment.

[0028] like Figure 3 and Figure 6 As shown, the mounting seat 4 is fixedly mounted on the top of the connecting pipe 3, and a lifting sleeve 5 is movably mounted in the middle of the mounting seat 4. A positioning mechanism is arranged between the lifting sleeve 5 and the connecting pipe 3, and the positioning mechanism includes an arc groove 12, and both sides of the lifting sleeve 5 are slidably connected with the arc groove 12. The outer walls of both sides of the lifting sleeve 5 are provided with scales 13. The positioning mechanism also includes a slide groove 14, and the slide groove 14 is opened in the inner middle of the arc groove 12. Both sides of the bottom end of the lifting sleeve 5 are provided with sliders 15 slidably connected with the slide groove 14.

[0029] In this embodiment, when the hand wheel controls the threaded rod 10 to rotate, the threaded rod 10 drives the lifting sleeve 5 to slide down along the inside of the arc groove 12. In this way, when adjusting, the opening angle of the valve plate 7 can be accurately controlled by observing the position of the scale 13, thereby accurately controlling the flow rate.

[0030] like Figure 5 As shown, a sealing member 16 is provided on the inner wall of the top end of the platform 2, and the sealing member 16 is movably connected to the valve stem 6;

[0031] In this embodiment, a sealing member 16 is disposed inside the platform 2 , and the sealing member 16 is used to improve the sealing performance of the connection between the valve stem 6 and the platform 2 .

[0032] Working principle: When adjusting, turn the handwheel, and the handwheel controls the threaded rod 10 to rotate. After the threaded rod 10 rotates, it drives the lifting sleeve 5 to descend linearly. When the lifting sleeve 5 descends, it drives the guide rods 11 on both sides of the inner wall to slide along the guide grooves 9 on both sides of the rotating shaft 8, so that the linear motion can be converted into rotational motion. When the rotating shaft 8 rotates, it drives the valve stem 6 to open and close the valve plate 7, and controls the flow rate by adjusting the opening angle of the valve plate 7; when the handwheel controls the threaded rod 10 to rotate, the threaded rod 10 drives the lifting sleeve 5 to slide down along the inside of the arc groove 12, so when adjusting, the opening angle of the valve plate 7 can be accurately controlled by observing the position of the scale 13, thereby accurately controlling the flow rate.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A valve capable of accurately controlling flow, characterized in that: include A butterfly valve (1), wherein a platform (2) is integrally formed at the upper end of the butterfly valve (1), a connecting pipe (3) is arranged at the top end of the platform (2), and an adjusting mechanism is arranged inside the connecting pipe (3); A mounting seat (4), the mounting seat (4) being fixedly mounted on the top end of the connecting pipe (3), a lifting sleeve (5) being movably mounted in the middle of the mounting seat (4), and a positioning mechanism being arranged between the lifting sleeve (5) and the connecting pipe (3); The regulating mechanism comprises a valve stem (6), the valve stem (6) being movably mounted on the inner middle part of the butterfly valve (1), a valve plate (7) being arranged on one side of the bottom end of the valve stem (6), a rotating shaft (8) being fixedly connected to the top end of the valve stem (6), and guide grooves (9) being arranged opposite to each other on both sides of the rotating shaft (8); The adjustment mechanism further comprises a threaded rod (10), the threaded rod (10) being movably mounted at the middle of the top end of the mounting seat (4), the middle of the top end of the lifting sleeve (5) being threadedly connected to the threaded rod (10), guide rods (11) being slidably connected to the guide grooves (9) being symmetrically arranged on both sides of the inner wall of the bottom end of the lifting sleeve (5), and a hand wheel being arranged at the top end of the threaded rod (10); The positioning mechanism comprises an arc-shaped groove (12), and two sides of the lifting sleeve (5) are slidably connected to the arc-shaped groove (12), and scales (13) are provided on the outer walls of both sides of the lifting sleeve (5).

2. A valve capable of accurately controlling flow according to claim 1, characterized in that: The positioning mechanism further comprises a slide groove (14), wherein the slide groove (14) is arranged in the middle of the inner side of the arc-shaped groove (12), and sliding blocks (15) slidably connected to the slide groove (14) are arranged on both sides of the bottom end of the lifting sleeve (5).

3. The valve capable of accurately controlling flow rate according to claim 1, characterized in that: A sealing member (16) is provided on the inner wall of the top end of the platform (2), and the sealing member (16) is movably connected to the valve stem (6).

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