Adjustable split butterfly valve

Abstract

The utility model discloses an adjustable split butterfly valve which comprises a valve body, a valve plate is arranged in the valve body, a valve rod is fixedly inserted on the valve plate, the valve rod is rotatably connected with the valve body, the top end of the valve rod penetrates through the valve body and is fixedly sleeved with a fixing sleeve, the top of the fixing sleeve is fixedly connected with a hand wheel, and the hand wheel is fixedly connected with the valve plate. A marking box is fixedly connected to the top of the valve body, the valve rod is rotatably inserted into the marking box, a scale plate is fixedly connected to the top of the marking box, scale values are arranged on the scale plate, a pointer plate is fixedly connected to the outer wall of one side of the fixing sleeve, and a positioning rod is slidably inserted into the outer wall of one side of the marking box. According to the check valve, the flow speed of a medium can be conveniently adjusted, and the situation that the stability of the flow speed is affected by deflection of the valve plate due to medium impact can be avoided by adopting the clamping and fixing assembly.

Description

Technical Field

[0001] The utility model relates to the field of butterfly valve related products, in particular to an adjustable split butterfly valve. Background Art

[0002] Butterfly valve, also known as flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. Butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media;

[0003] However, the existing butterfly valve has poor accuracy in adjusting flow rate, and the valve plate is easily deflected due to the impact caused by the excessively fast flow rate of the medium, which is not conducive to the regulation of the fluid delivery speed and has defects. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable split butterfly valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable split butterfly valve, comprising a valve body, a valve plate is arranged on the valve body, a valve stem is fixedly inserted on the valve plate, the valve stem is rotatably connected to the valve body, the top end of the valve stem passes through the valve body and is fixedly sleeved with a fixing sleeve, the top of the fixing sleeve is fixedly connected with a hand wheel, the top of the valve body is fixedly connected with a marking box, the valve stem is rotatably inserted on the marking box, the top of the marking box is fixedly connected with a scale plate, the scale plate is provided with a scale value, a pointer plate is fixedly connected to an outer wall of one side of the fixing sleeve, a positioning rod is slidably inserted on an outer wall of one side of the marking box, a plurality of positioning grooves corresponding to the positioning rod are arranged on the outer wall of the valve stem, one end of the positioning rod close to the valve stem is fixedly sleeved with a limiting sleeve, an elastic mechanism is sleeved on the positioning rod, two ends of the elastic mechanism are respectively fixedly connected to the limiting sleeve and the inner wall of the marking box, and one end of the positioning rod away from the limiting sleeve is fixedly connected with a traction plate.

[0006] Preferably, the scale plate is arranged in an arc-shaped structure.

[0007] Preferably, the multiple positioning grooves on the valve stem correspond to the scale values ​​on the scale plate.

[0008] Preferably, the outer side wall of the hand wheel is provided with a plurality of anti-slip grooves arranged in an inclined manner.

[0009] Preferably, a pull ring is fixedly connected to an outer wall of one side of the traction plate.

[0010] Preferably, the elastic mechanism is a spring.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The adjustable split butterfly valve drives the valve stem to rotate in the valve plate by turning the hand wheel, and the opening and closing angle of the valve plate is penetrated by the pointer plate on the outer wall of the fixed sleeve pointing to the scale value on the scale plate. When it is opened and closed to a suitable angle, the limit sleeve is pushed by the resilience of the elastic mechanism. At this time, the limit sleeve will drive the positioning rod to slide on the fixed sleeve and then be inserted into the positioning groove corresponding to the valve stem. The rotation angle of the valve stem is fixed by the positioning rod to ensure that the angle of the valve plate in the valve body is fixed, thereby realizing the flow rate adjustment of the valve body. The utility model is convenient for realizing the flow rate adjustment of the medium, and the setting of the clamping fixing component can avoid the deflection of the valve plate caused by the impact of the medium and affect the stability of the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of an adjustable split butterfly valve of the utility model;

[0014] Figure 2 It is an enlarged view of point A of an adjustable split butterfly valve of the utility model;

[0015] Figure 3 The utility model is a schematic diagram of the structure of the scale plate of an adjustable split butterfly valve.

[0016] In the figure: 1. valve body; 2. valve plate; 3. valve stem; 4. fixing sleeve; 5. hand wheel; 6. marking box; 7. scale plate; 8. scale value; 9. pointer plate; 10. positioning rod; 11. positioning groove; 12. limit sleeve; 13. elastic mechanism; 14. traction plate; 15. pull ring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection 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 the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-3 The utility model provides an embodiment: an adjustable split butterfly valve, comprising a valve body 1, a valve plate 2 is arranged in the valve body 1, a valve stem 3 is fixedly inserted on the valve plate 2, the valve stem 3 is rotatably connected to the valve body 1, the top of the valve stem 3 passes through the valve body 1 and is fixedly sleeved with a fixing sleeve 4, the top of the fixing sleeve 4 is fixedly connected with a hand wheel 5, the top of the valve body 1 is fixedly connected with a marking box 6, the valve stem 3 is rotatably inserted on the marking box 6, the top of the marking box 6 is fixedly connected with a scale plate 7, the scale plate 7 is provided with a scale value 8, a pointer plate 9 is fixedly connected to the outer wall of one side of the fixing sleeve 4, a positioning rod 10 is slidably inserted on the outer wall of one side of the marking box 6, a plurality of positioning grooves 11 corresponding to the positioning rod 10 are arranged on the outer wall of the valve stem 3, and the end of the positioning rod 10 close to the valve stem 3 is fixedly sleeved with a limiting sleeve 12 An elastic mechanism 13 is sleeved on the positioning rod 10, and the two ends of the elastic mechanism 13 are fixedly connected to the limit sleeve 12 and the inner wall of the marking box 6 respectively. The end of the positioning rod 10 away from the limit sleeve 12 is fixedly connected to a traction plate 14. Specifically, the handwheel 5 drives the valve stem 3 to rotate in the valve body 1, and the pointer plate 9 on the outer wall of the fixed sleeve 4 points to the scale value 8 on the scale plate 7 to observe the opening and closing angle of the valve plate 2. When it is opened and closed to a suitable angle, the rebound force of the elastic mechanism 13 is used to push the limit sleeve 12. At this time, the limit sleeve 12 will drive the positioning rod 10 to slide on the marking box 6 and then insert it into the positioning groove 11 corresponding to the valve stem 3. The rotation angle of the valve stem 3 is fixed by the positioning rod 10 to ensure that the angle of the valve plate 2 in the valve body 1 is fixed, thereby realizing the flow rate adjustment of the valve body 1.

[0021] In this embodiment, the scale plate 7 is arranged as an arc-shaped structure; the multiple positioning grooves 11 on the valve stem 3 correspond to the scale values ​​8 on the scale plate 7; the outer wall of the handwheel 5 is provided with multiple anti-slip grooves arranged at an angle to avoid slipping during rotation; a pull ring 15 is fixedly connected to the outer wall of one side of the traction plate 14 to facilitate pulling the positioning rod 10; the elastic mechanism 13 is a spring with high acquisition degree.

[0022] Working principle: first, turn the handwheel 5 to drive the valve stem 3 to rotate in the valve body 1, and use the pointer plate 9 on the outer wall of the fixed sleeve 4 to point to the scale value 8 on the scale plate 7 to observe the opening and closing angle of the valve plate 2. When it is opened and closed to a suitable angle, the rebound force of the elastic mechanism 13 is used to push the limit sleeve 12. At this time, the limit sleeve 12 will drive the positioning rod 10 to slide on the marking box 6 and then insert it into the positioning groove 11 corresponding to the valve stem 3. The positioning rod 10 is used to fix the rotation angle of the valve stem 3 to ensure that the angle of the valve plate 2 in the valve body 1 is fixed, thereby realizing the flow rate adjustment of the valve body 1.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An adjustable split butterfly valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a valve plate (2), a valve stem (3) is fixedly inserted on the valve plate (2), the valve stem (3) is rotatably connected to the valve body (1), the top end of the valve stem (3) passes through the valve body (1) and is fixedly sleeved with a fixing sleeve (4), the top of the fixing sleeve (4) is fixedly connected with a hand wheel (5), the top of the valve body (1) is fixedly connected with a marking box (6), the valve stem (3) is rotatably inserted on the marking box (6), the top of the marking box (6) is fixedly connected with a scale plate (7), the scale plate (7) is provided with a scale value (8), and one side of the fixing sleeve (4) is provided with a A pointer plate (9) is fixedly connected to the wall, a positioning rod (10) is slidably inserted on the outer wall of one side of the marking box (6), a plurality of positioning grooves (11) corresponding to the positioning rod (10) are provided on the outer wall of the valve stem (3), one end of the positioning rod (10) close to the valve stem (3) is fixedly sleeved with a limiting sleeve (12), an elastic mechanism (13) is sleeved on the positioning rod (10), two ends of the elastic mechanism (13) are respectively fixedly connected to the limiting sleeve (12) and the inner wall of the marking box (6), and one end of the positioning rod (10) away from the limiting sleeve (12) is fixedly connected to a traction plate (14).

2. The adjustable split butterfly valve according to claim 1, characterized in that: The scale plate (7) is arranged in an arc-shaped structure.

3. The adjustable split butterfly valve according to claim 1, characterized in that: The plurality of positioning grooves (11) on the valve stem (3) correspond to the scale values ​​(8) on the scale plate (7).

4. The adjustable split butterfly valve according to claim 1, characterized in that: The outer side wall of the hand wheel (5) is provided with a plurality of anti-slip grooves arranged in an inclined manner.

5. The adjustable split butterfly valve according to claim 1, characterized in that: A pull ring (15) is fixedly connected to an outer wall of one side of the pulling plate (14).

6. The adjustable split butterfly valve according to claim 1, characterized in that: The elastic mechanism (13) is a spring.

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