Adjusting valve opening degree indicating device

Abstract

The utility model provides a regulating valve opening indicating device which comprises a regulating valve structure, a regulating valve worm gear case, a main valve crank connecting rod mechanism and an indicating mechanism. The indicating mechanism has the advantages that the rotating center of the crank of the indicating mechanism is fixed on the valve shaft of the main valve crank connecting rod mechanism, the crank connecting rod of the indicating mechanism is an equal-proportion reduced version of the crank connecting rod of the main valve crank connecting rod mechanism, and the opening degree of the valve can be clearly known through the indicating mechanism on the worm gear case. In addition, a linear displacement sensor is additionally arranged, so that the opening degree (displacement) of the valve can be converted into an electric signal to be sent to an external PLC control system.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the adjusting valve field especially, it relates to a kind of adjusting valve opening indicating device. BACKGROUND

[0002] At present, the adjusting valve of crank connecting rod mechanism, its working principle is through crank connecting rod mechanism to convert the rotation of valve shaft into the straight stroke movement of piston, under the condition that valve shaft rotation speed is certain, the moving speed of piston is fast first and then slow, that is to say, the opening percentage of driving device and the opening percentage of valve are not linear relationship, cannot make that staff can clearly and clearly observe the opening indication of adjusting valve, which has certain problem in actual engineering application. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at providing a kind of adjusting valve opening indicating device to solve the problem that the opening percentage of existing technology and the opening percentage of valve are not linear relationship, cannot make that staff can clearly and clearly observe the opening indication of adjusting valve.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A kind of adjusting valve opening indicating device, including adjusting valve structure, adjusting valve worm wheel box, main valve crank connecting rod mechanism and indicating mechanism, the main valve crank connecting rod mechanism is installed in the inside of adjusting valve structure, adjusting valve worm wheel box is installed to the outside of adjusting valve structure, adjusting valve worm wheel box is installed to the outside of adjusting valve structure, adjusting valve worm wheel box side is also connected with indicating mechanism, adjusting valve worm wheel box is used to synchronously drive main valve crank connecting rod mechanism and indicating mechanism.

[0006] Further, the main valve crank connecting rod mechanism includes main crank, main valve shaft, main connecting rod and main piston, one end of the main valve shaft is connected with adjusting valve worm wheel box, the outside of main valve shaft is sleeved with one end of main crank, the other end of main crank is connected to main piston by main connecting rod.

[0007] Further, the indicating mechanism includes indicating crank, indicating connecting rod and pointer, which are all located in indicating housing, one end of indicating crank is connected to one end of main valve shaft, the other end of indicating crank is connected to pointer by indicating connecting rod.

[0008] Further, the indicating housing is internally provided with indicating sliding slot, and the pointer is located in the indicating sliding slot, and the indicating sliding slot side is further provided with indicating opening.

[0009] Further, the surface of the indicating housing is provided with glass cover.

[0010] Further, the indicating mechanism further includes linear displacement sensor, and the linear displacement sensor is installed to one side of the pointer.

[0011] Further, the structure of the indicating crank is the same as that of the main crank, the structure of the indicating connecting rod is the same as that of the main connecting rod, and the combined structure size of the indicating crank and the indicating connecting rod is the same as that of the main crank and the main connecting rod.

[0012] Further, the adjusting valve worm gear box comprises a worm wheel and a worm gear structure, the worm wheel is installed on the worm gear structure, the worm gear structure is installed on the adjusting valve structure through a shell cover, the worm gear structure is sleeved on the main valve shaft, and the worm gear structure is used for driving the main valve shaft to rotate.

[0013] Compared with the prior art, the adjusting valve opening degree indicating device has the following advantages:

[0014] The adjusting valve opening degree indicating device, the rotating center of the crank of the indicating mechanism is fixed on the valve shaft of the main valve crank connecting rod mechanism, the crank connecting rod of the indicating mechanism is a scaled-down version of the crank connecting rod of the main valve crank connecting rod mechanism, and the opening degree of the valve can be clearly known through the indicating mechanism on the worm gear box. In addition, the device increases the linear displacement sensor, so that the opening degree (displacement amount) of the valve can be converted into an electrical signal and sent to an external PLC control system. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein for explanation. The application and its attendant explanations are intended to explain the application without unduly limiting it. In the drawings:

[0016] Figure 1 The whole structure state one schematic view is shown in the whole structure state one schematic view of the embodiment of the application.

[0017] Figure 2 The whole structure state two schematic view is shown in the whole structure state two schematic view of the embodiment of the application.

[0018] Figure 3 The whole structure state one schematic view is shown in the whole structure state one schematic view of the embodiment of the application.

[0019] Figure 4 The whole structure state two schematic view is shown in the whole structure state two schematic view of the embodiment of the application.

[0020] Figure 5 The whole structure state one schematic view is shown in the whole structure state one schematic view of the embodiment of the application.

[0021] Figure 6 The whole structure state two schematic view is shown in the whole structure state two schematic view of the embodiment of the application.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1. Control valve structure; 2. Control valve worm gear box; 21. Rotary wheel; 22. Worm gear structure; 3. Main valve crank-connecting rod mechanism; 31. Main crank; 32. Main valve shaft; 33. Main connecting rod; 34. Main piston; 4. Indicating mechanism; 41. Indicating crank; 42. Indicating connecting rod; 43. Pointer; 44. Indicating housing; 441. Indicating groove; 442. Indicating opening degree; 45. Linear displacement sensor. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 6As shown, the adjusting valve opening degree indicating device comprises an adjusting valve structure 1, an adjusting valve worm gear box 2, a main valve crank connecting rod mechanism 3 and an indicating mechanism 4, the main valve crank connecting rod mechanism 3 is internally installed in the adjusting valve structure 1, the adjusting valve worm gear box 2 is externally installed on the adjusting valve structure 1, the adjusting valve worm gear box 2 is externally connected with the indicating mechanism 4, and the adjusting valve worm gear box 2 is used for synchronously driving the main valve crank connecting rod mechanism 3 and the indicating mechanism 4.

[0029] The adjusting valve worm gear box 2 is externally connected with the indicating mechanism 4, and the adjusting valve worm gear box 2 is used for synchronously driving the main valve crank connecting rod mechanism 3 and the indicating mechanism 4.

[0030] In a preferred embodiment of the utility model, the main valve crank connecting rod mechanism 3 comprises a main crank 31, a main valve shaft 32, a main connecting rod 33 and a main piston 34, one end of the main valve shaft 32 is connected with the adjusting valve worm gear box 2, the main valve shaft 32 is externally sleeved with one end of the main crank 31, and the other end of the main crank 31 is connected with the main piston 34 through the main connecting rod 33.

[0031] In a preferred embodiment of the utility model, the indicating mechanism 4 includes an indicating crank 41, an indicating connecting rod 42 and a pointer 43, all of which are located in an indicating housing 44, one end of the indicating crank 41 is connected to one end of the main valve shaft 32, the other end of the indicating crank 41 is connected to the pointer 43 through the indicating connecting rod 42. The indicating housing 44 is internally provided with an indicating sliding groove 441, the pointer 43 is located in the indicating sliding groove 441, and the indicating housing 44 is further provided with an indicating opening 442 on one side. In this embodiment, the indicating crank 41 rotates with the main valve shaft 32, and the rotation of the indicating crank 41 can drive the indicating connecting rod 42 to push the pointer 43 to move back and forth in the indicating sliding groove 441. In addition, in order to avoid interference with the movement of the pointer 43, the width of the indicating sliding groove 441 can be set to not interfere with the movement of the pointer 43.

[0032] In a preferred embodiment of the utility model, the indicating mechanism 4 further includes a linear displacement sensor 45, which is installed on one side of the pointer 43. In actual use, the linear displacement sensor 45 can move with the pointer 43, and is used to convert the opening of the valve (displacement) into an electrical signal and send it to the external PLC control system.

[0033] In a preferred embodiment of the utility model, the structure of the indicating crank 41 is the same as that of the main crank 31, the structure of the indicating connecting rod 42 is the same as that of the main connecting rod 33, and the combined structure size of the indicating crank 41 and the indicating connecting rod 42 is a scaled-down size of the combined structure of the main crank 31 and the main connecting rod 33. In this embodiment, the purpose of setting the combined structure size of the indicating crank 41 and the indicating connecting rod 42 to be a scaled-down size of the combined structure of the main crank 31 and the main connecting rod 33 is to facilitate the staff to clearly observe the opening of the valve.

[0034] In a preferred embodiment of the utility model, the surface of the indicating housing 44 can be provided with a glass cover, which facilitates the staff to observe the opening of the valve in real time.

[0035] In a preferred embodiment of the utility model, the regulating valve worm gear box 2 includes a runner 21 and a worm gear structure 22, the runner 21 is installed on the worm of the worm gear structure 22, the worm gear structure 22 is installed on the regulating valve structure 1 through a shell cover, the worm gear of the worm gear structure 22 is sleeved on the main valve shaft 32, and the worm gear structure 22 is used to drive the main valve shaft 32 to rotate. In actual use, other structures can also be used instead of the worm gear structure 22, and electric drive can also be used, as long as the purpose of driving the main valve shaft 32 to rotate can be achieved.

[0036] Working principle of the regulating valve opening indicating device:

[0037] In actual use, the staff rotates the rotating wheel 21, the rotating wheel 21 rotates to drive the worm of the worm and gear structure 22 to rotate, the worm of the worm and gear structure 22 rotates to drive the worm wheel of the worm and gear structure 22 to rotate, the worm wheel of the worm and gear structure 22 rotates to drive the main valve shaft 32 to rotate, that is, the opening observation of the valve can be realized.

[0038] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve position indicator device, characterized by: The adjusting valve structure (1) is internally provided with the main valve crank connecting rod mechanism (3), the adjusting valve worm box (2) is externally provided on the adjusting valve structure (1), the adjusting valve worm box (2) is externally connected with the indicating mechanism (4), and the adjusting valve worm box (2) is used for synchronously driving the main valve crank connecting rod mechanism (3) and the indicating mechanism (4).

2. The valve opening degree adjusting device according to claim 1, characterized by: The main valve crank connecting rod mechanism (3) comprises a main crank (31), a main valve shaft (32), a main connecting rod (33) and a main piston (34), one end of the main valve shaft (32) is connected with the adjusting valve worm box (2), the main valve shaft (32) is externally sleeved with one end of the main crank (31), and the other end of the main crank (31) is connected with the main piston (34) through the main connecting rod (33).

3. The valve opening degree adjusting device according to claim 1, wherein: The indicating mechanism (4) comprises an indicating crank (41), an indicating connecting rod (42) and a pointer (43) which are all located in an indicating shell (44), one end of the indicating crank (41) is connected with one end of the main valve shaft (32), and the other end of the indicating crank (41) is connected with the pointer (43) through the indicating connecting rod (42).

4. The valve opening degree adjusting device according to claim 3, wherein: The indicating shell (44) is internally provided with an indicating sliding groove (441), the pointer (43) is located in the indicating sliding groove (441), and one side of the indicating sliding groove (441) is further provided with an indicating opening (442).

5. The valve opening degree adjusting device according to claim 3, wherein: The surface of the indicating shell (44) is externally provided with a glass cover.

6. The valve opening degree adjusting device according to claim 3, wherein: The indicating mechanism (4) further comprises a linear displacement sensor (45) which is externally connected with one side of the pointer (43).

7. The valve opening degree adjusting device according to claim 3, wherein: The structure of the indicating crank (41) is the same as that of the main crank (31), the structure of the indicating connecting rod (42) is the same as that of the main connecting rod (33), and the combined structure of the indicating crank (41) and the indicating connecting rod (42) is a proportionally reduced size of the combined structure of the main crank (31) and the main connecting rod (33).

8. The valve opening degree adjusting device according to claim 1, wherein: The adjusting valve worm box (2) comprises a rotating wheel (21) and a worm gear structure (22), the rotating wheel (21) is externally connected with the worm of the worm gear structure (22), the worm gear structure (22) is externally connected with the adjusting valve structure (1) through a shell cover, the worm gear of the worm gear structure (22) is sleeved with the main valve shaft (32), and the worm gear structure (22) is used for driving the main valve shaft (32) to rotate.

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