Valve position limiting device with position indicating function

Abstract

The utility model discloses a valve position limiting device with a position indicating function, belongs to the technical field of valves, and solves the problems that an existing device is complex in structure and large in occupied space size. The device comprises a connecting disc, an anti-rotation block, two limiting blocks and two position indicating mechanisms. And the connecting disc is arranged between the valve cover and the valve actuator. The anti-rotation block and the two limiting blocks are embedded in the end, away from the valve deck, of the connecting disc, and the two limiting blocks are fixed to the connecting disc. The anti-rotation block is connected with the valve rod and can rotate along with the valve rod. A clamping groove extending in the height direction of the anti-rotation block is formed in the anti-rotation block, and the length direction of the clamping groove is consistent with the outer circle direction of the anti-rotation block. An arc boss is arranged on the side, away from the clamping groove, of the anti-rotation block. And the two position indicating mechanisms are arranged in the connecting disc. The device is simple in structure and convenient to install, the valve opening and closing position can be indicated while the valve opening and closing position is limited, and the space size occupied by the device is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a valve position limiting device with a position indicating function. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, regulate and control the transported medium. During the valve design process, the valve's switch position must be limited, and the valve position must be clearly indicated to facilitate operators to judge the valve's working status, so that subsequent operations can be performed more quickly.

[0003] However, the existing valve position indication and valve position limitation are realized by two independent mechanisms, which not only makes the overall structure of the device more complicated, but also requires the two mechanisms to be separately supported or installed on the valve cover during installation, which occupies a large space and cannot be used in occasions with strict requirements on the external dimensions. Utility Model Content

[0004] The embodiment of the present application solves the problem that the existing device has a complex structure and occupies a large space by providing a valve position limiting device with a position indication function.

[0005] The utility model provides a valve position limiting device with a position indicating function, the valve position limiting device with a position indicating function comprises a connecting disk, an anti-rotation block, two limit blocks and two position indicating mechanisms; the connecting disk is arranged between the valve cover and the valve actuator; the anti-rotation block and the two limit blocks are both embedded in the end of the connecting disk away from the valve cover, and the two limit blocks are both fixed to the connecting disk; the anti-rotation block is connected to the valve stem, and the anti-rotation block can rotate with the valve stem; the anti-rotation block is provided with a slot extending along its height direction, and the length direction of the slot is consistent with the outer circumference of the anti-rotation block The directions are consistent; an arc boss is provided on the side of the anti-rotation block away from the slot; the two position indicating mechanisms are both provided in the connecting disk; when the valve is in the open position, the slot abuts against one of the limit blocks, and the arc boss abuts against one of the position indicating mechanisms, so that the end of the position indicating mechanism away from the arc boss can extend out of the connecting disk; when the valve is in the closed position, the slot abuts against the other limit block, and the arc boss abuts against the other position indicating mechanism, so that the end of the position indicating mechanism away from the arc boss can extend out of the connecting disk.

[0006] In a possible implementation, the position indicating mechanism includes an indicating rod, a connecting piece and an elastic element; the connecting piece is sleeved on the indicating rod, and the indicating rod can slide in the connecting piece; the connecting piece is connected to the connecting disk; the elastic element is sleeved on the indicating rod, and the first end of the elastic element is connected to the connecting piece, and the second end is connected to the indicating rod; when the slot abuts against one of the limit blocks, the arc boss abuts against the indicating rod corresponding to the limit block to compress the elastic element and make the indicating rod slide in the connecting piece, so that the end of the indicating rod facing away from the arc boss extends out of the connecting disk.

[0007] In a possible implementation, the valve position limiting device with a position indication function further includes a screw; the screw is used to connect the connection plate and the valve cover.

[0008] In a possible implementation, a first positioning stop is formed at one end of the connecting disk that is connected to the valve cover.

[0009] In a possible implementation, the valve position limiting device with position indication function also includes a first positioning pin; a first positioning hole is formed at one end of the connecting plate connected to the valve cover; and the first positioning pin is installed in the first positioning hole and connected to the valve cover.

[0010] In a possible implementation, the valve position limiting device with a position indication function further includes a bolt; the bolt is used to connect the connection plate and the valve actuator.

[0011] In a possible implementation, a second positioning stop is formed at one end of the connection disk that is connected to the valve actuator.

[0012] In a possible implementation, the valve position limiting device with position indication function also includes a second positioning pin; a second positioning hole is formed at one end of the connecting disk connected to the valve actuator; and the second positioning pin is installed in the second positioning hole and connected to the valve actuator.

[0013] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0014] The embodiment of the utility model provides a valve position limiting device with a position indicating function, which includes a connecting disk, an anti-rotation block, two limit blocks and two position indicating mechanisms. The connecting disk is arranged between the valve cover and the valve actuator. The anti-rotation block and the two limit blocks are both embedded in the end of the connecting disk away from the valve cover, and the two limit blocks are both fixed to the connecting disk. The anti-rotation block is connected to the valve stem, and the anti-rotation block can rotate with the valve stem. The anti-rotation block is provided with a slot extending along its height direction, and the length direction of the slot is consistent with the outer circle direction of the anti-rotation block. An arc boss is provided on the side of the anti-rotation block away from the slot. The two position indicating mechanisms are both arranged in the connecting disk. When the valve is in the open position, the slot abuts against one of the limit blocks, and the arc boss abuts against one of the position indicating mechanisms, so that the end of the position indicating mechanism away from the arc boss can extend out of the connecting disk. When the valve is in the closed position, the slot abuts against another limit block, and the arc boss abuts against another position indicating mechanism, so that the end of the position indicating mechanism away from the arc boss can extend out of the connecting disk. In this application, the connecting disk is used as the main body of the device, and the anti-rotation block, two limit blocks and two position indicating mechanisms are integrated on the connecting disk. The structure is simple and easy to install. It can not only indicate the valve switch position while limiting the valve switch position, but also greatly compress the space occupied by the device and improve the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a valve position limiting device with a position indication function provided in an embodiment of the present application;

[0017] Figure 2 An installation structure diagram of a valve position limiting device with a position indication function provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the structure of the connection disk provided in the embodiment of the present application;

[0019] Figure 4 A cross-sectional view of a connection disk provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the structure of the anti-rotation block provided in an embodiment of the present application;

[0021] Figure 6A schematic diagram of the structure of a position indication mechanism provided in an embodiment of the present application.

[0022] Icons: 1-connecting plate; 1a-first positioning stop; 1b-first positioning hole; 1c-second positioning stop; 1d-second positioning hole; 2-anti-rotation block; 21-slot; 22-arc boss; 3-limiting block; 4-position indicating mechanism; 41-indicating rod; 42-connecting piece; 43-elastic element; 5-valve stem; 6-valve cover; 7-valve actuator; 8-screw; 9-first positioning pin; 10-bolt; 11-second positioning pin. DETAILED DESCRIPTION

[0023] 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 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.

[0024] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, 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 a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0025] like Figures 1 to 6 As shown, an embodiment of the utility model provides a valve position limiting device with a position indicating function, the device comprising a connecting plate 1, an anti-rotation block 2, two limit blocks 3 and two position indicating mechanisms 4.

[0026] like Figure 1 and Figure 2As shown, the connection plate 1 is arranged between the valve cover 6 and the valve actuator 7. The anti-rotation block 2 and the two limit blocks 3 are embedded in the end of the connection plate 1 away from the valve cover 6, and the two limit blocks 3 are fixed to the connection plate 1. Specifically, the connection plate 1 is not only an important structure for connecting the valve cover 6 and the valve actuator 7, but also the main body of the valve position limiting device with position indication function of the present application, so that while realizing the valve switch position limitation and indication, the space size occupied by the device is greatly compressed, and the application range of the device is improved.

[0027] Continue to refer to Figure 1 As shown, the anti-rotation block 2 is connected to the valve stem 5, and the anti-rotation block 2 can rotate with the valve stem 5. Specifically, a mounting hole and a keyway are provided on the anti-rotation block 2, and the valve stem 5 and the anti-rotation block 2 are connected by a key.

[0028] like Figure 5 As shown, the anti-rotation block 2 is provided with a slot 21 extending along its height direction, and the length direction of the slot 21 is consistent with the outer circle direction of the anti-rotation block 2. A circular arc boss 22 is provided on the side of the anti-rotation block 2 away from the slot 21. In actual application, the slot 21 cooperates with the limit block 3 to limit the valve switch position, and the circular arc boss 22 cooperates with the position indicating mechanism 4 to indicate the valve switch position.

[0029] like Figure 1 As shown, the two position indicating mechanisms 4 are both arranged in the connecting disk 1. In practical applications, the sizes of the anti-rotation block 2, the two limit blocks 3 and the two position indicating mechanisms 4, as well as the arrangement positions of the components on the connecting disk 1 can be determined according to the switch position of the valve and the rotation angle (90° or 180°). The specific structure shown in the drawings of this application is the arrangement position of the components when the valve rotates at an angle of 90°.

[0030] In actual application, when the valve is in the open position, the slot 21 abuts against one of the limit blocks 3, and the arc boss 22 abuts against one of the position indicating mechanisms 4, so that the end of the position indicating mechanism 4 that is away from the arc boss 22 can extend out of the connecting disk 1. When the valve is in the closed position, the slot 21 abuts against another limit block 3, and the arc boss 22 abuts against another position indicating mechanism 4, so that the end of the position indicating mechanism 4 that is away from the arc boss 22 can extend out of the connecting disk 1. In this application, the connecting disk 1 is used as the main body of the device, and the anti-rotation block 2, two limit blocks 3 and two position indicating mechanisms 4 are integrated on the connecting disk 1. The structure is simple and easy to install. It can not only indicate the valve switch position while limiting the valve switch position, but also greatly compress the space size occupied by the device, thereby improving the scope of application of the device.

[0031] The embodiment of the utility model provides a valve position limiting device with a position indicating function, which comprises a connecting disk 1, an anti-rotation block 2, two limiting blocks 3 and two position indicating mechanisms 4. The connecting disk 1 is arranged between the valve cover 6 and the valve actuator 7. The anti-rotation block 2 and the two limiting blocks 3 are both embedded in the end of the connecting disk 1 away from the valve cover 6, and the two limiting blocks 3 are both fixed to the connecting disk 1. The anti-rotation block 2 is connected to the valve stem 5, and the anti-rotation block 2 can rotate with the valve stem 5. The anti-rotation block 2 is provided with a slot 21 extending along its height direction, and the length direction of the slot 21 is consistent with the outer circle direction of the anti-rotation block 2. A circular arc boss 22 is provided on the side of the anti-rotation block 2 away from the slot 21. The two position indicating mechanisms 4 are both arranged in the connecting disk 1. When the valve is in the open position, the slot 21 abuts against one of the limiting blocks 3, and the circular arc boss 22 abuts against one of the position indicating mechanisms 4, so that the end of the position indicating mechanism 4 away from the circular arc boss 22 can extend out of the connecting disk 1. When the valve is in the closed position, the slot 21 abuts against another limit block 3, and the arc boss 22 abuts against another position indicating mechanism 4, so that the end of the position indicating mechanism 4 away from the arc boss 22 can extend out of the connecting disk 1. In this application, the connecting disk 1 is used as the main body of the device, and the anti-rotation block 2, two limit blocks 3 and two position indicating mechanisms 4 are integrated on the connecting disk 1. The structure is simple and easy to install. It can not only indicate the valve switch position while limiting the valve switch position, but also greatly compress the space size occupied by the device, thereby improving the scope of application of the device.

[0032] like Figure 6 As shown, the position indicating mechanism 4 includes an indicating rod 41, a connecting member 42 and an elastic element 43. The connecting member 42 is sleeved on the indicating rod 41, and the indicating rod 41 can slide in the connecting member 42. The connecting member 42 is connected to the connecting disk 1. In practical applications, the connecting member 42 and the connecting disk 1 are fixed by threaded connection.

[0033] Continue to refer to Figure 6 As shown, the elastic element 43 is sleeved on the indicator rod 41, and the first end of the elastic element 43 is connected to the connecting member 42, and the second end is connected to the indicator rod 41. When the slot 21 abuts against one of the limit blocks 3, the arc boss 22 abuts against the indicator rod 41 corresponding to the limit block 3, so as to compress the elastic element 43 and make the indicator rod 41 slide in the connecting member 42, so that the end of the indicator rod 41 away from the arc boss 22 extends out of the connecting disk 1. In actual application, the switch position information of the valve can be obtained by observing the position of the indicator rod 41 extending out of the connecting disk 1. In the process of switching the valve position, the anti-rotation block 2 rotates with the valve stem 5. During the rotation of the anti-rotation block 2, the pressure of the arc boss 22 on the indicator rod 41 will gradually disappear, and the indicator rod 41 will reset under the elastic force of the elastic element 43; when the valve is switched to the right position, the slot 21 abuts against the other limit block 3.

[0034] like Figure 2 As shown, the valve position limiting device with position indication function also includes a screw 8. The screw 8 is used to connect the connection plate 1 and the valve cover 6. In practical applications, a first threaded hole is provided on the connection plate 1, and the threaded end of the screw 8 passes through the first threaded hole and is connected to the valve cover 6.

[0035] like Figure 4 As shown, a first positioning stop 1a is provided at one end of the connection plate 1 connected to the valve cover 6. In practical applications, the first positioning stop 1a is used to ensure the center coaxiality of the connection between the valve stem 5 and the valve actuator 7. Specifically, the first positioning stop 1a is designed to be a basic hole system 9th grade tolerance fit H9.

[0036] In the embodiment of the present application, the valve position limiting device with position indication function further includes a first positioning pin 9. A first positioning hole 1b is provided at one end of the connection disk 1 connected to the valve cover 6. The first positioning pin 9 is installed in the first positioning hole 1b and connected to the valve cover 6. In practical applications, the first positioning pin 9 can ensure accurate positioning when the valve cover 6 and the connection disk 1 are connected, which is not only convenient for disassembly and maintenance, but also can improve the reliability of torque transmission and ensure a safe and stable structure.

[0037] Continue to refer to Figure 2 As shown, the valve position limiting device with position indication function also includes a bolt 10. The bolt 10 is used to connect the connection plate 1 and the valve actuator 7. In practical applications, a second threaded hole is provided on the connection plate 1, and the threaded end of the bolt 10 passes through the second threaded hole and is connected to the valve actuator 7.

[0038] like Figure 4 As shown, the end of the connection plate 1 connected to the valve actuator 7 is provided with a second positioning stop 1c. In practical applications, the second positioning stop 1c is used to ensure the center coaxiality of the connection between the valve stem 5 and the valve actuator 7. Specifically, the second positioning stop 1c is designed to be a 10th grade tolerance fit h10 of the base shaft system.

[0039] In the embodiment of the present application, the valve position limiting device with position indication function further includes a second positioning pin 11. A second positioning hole 1d is provided at one end of the connection disk 1 connected to the valve actuator 7. The second positioning pin 11 is installed in the second positioning hole 1d and connected to the valve actuator 7. In practical applications, the second positioning pin 11 can ensure accurate positioning when the valve actuator 7 and the connection disk 1 are connected, which is not only convenient for disassembly and maintenance, but also can improve the reliability of torque transmission and ensure a safe and stable structure.

[0040] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0041] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A valve position limiting device with position indication function, characterized in that: It comprises a connecting plate (1), an anti-rotation block (2), two limit blocks (3) and two position indicating mechanisms (4); The connecting plate (1) is arranged between the valve cover (6) and the valve actuator (7); The anti-rotation block (2) and the two limit blocks (3) are both embedded in an end of the connecting plate (1) away from the valve cover (6), and the two limit blocks (3) are both fixed to the connecting plate (1); The anti-rotation block (2) is connected to the valve stem (5), and the anti-rotation block (2) is capable of rotating along with the valve stem (5); The anti-rotation block (2) is provided with a slot (21) extending along its height direction, and the length direction of the slot (21) is consistent with the outer circumferential direction of the anti-rotation block (2); a circular arc boss (22) is provided on a side of the anti-rotation block (2) away from the slot (21); The two position indicating mechanisms (4) are both arranged in the connecting disk (1); When the valve is in the open position, the slot (21) abuts against one of the limit blocks (3), and the arc boss (22) abuts against one of the position indicating mechanisms (4), so that an end of the position indicating mechanism (4) that is away from the arc boss (22) can extend out of the connecting disk (1); when the valve is in the closed position, the slot (21) abuts against another of the limit blocks (3), and the arc boss (22) abuts against another of the position indicating mechanisms (4), so that an end of the position indicating mechanism (4) that is away from the arc boss (22) can extend out of the connecting disk (1).

2. The valve position limiting device with position indication function according to claim 1, characterized in that: The position indicating mechanism (4) comprises an indicating rod (41), a connecting piece (42) and an elastic element (43); The connecting member (42) is sleeved on the indicating rod (41), and the indicating rod (41) is capable of sliding inside the connecting member (42); the connecting member (42) is connected to the connecting disk (1); The elastic element (43) is sleeved on the indicating rod (41), and a first end of the elastic element (43) is connected to the connecting member (42), and a second end is connected to the indicating rod (41); When the clamping slot (21) abuts against one of the limit blocks (3), the arc boss (22) abuts against the indicator rod (41) corresponding to the limit block (3), so as to compress the elastic element (43) and make the indicator rod (41) slide in the connecting member (42), so that the end of the indicator rod (41) facing away from the arc boss (22) extends out of the connecting plate (1).

3. The valve position limiting device with position indication function according to claim 1, characterized in that: Also includes a screw (8); The screw (8) is used to connect the connection plate (1) and the valve cover (6).

4. The valve position limiting device with position indication function according to claim 1, characterized in that: A first positioning stop (1a) is provided at one end of the connection plate (1) that is connected to the valve cover (6).

5. The valve position limiting device with position indication function according to claim 1, characterized in that: Also includes a first positioning pin (9); A first positioning hole (1b) is formed at one end of the connection plate (1) connected to the valve cover (6); The first positioning pin (9) is installed in the first positioning hole (1b) and is connected to the valve cover (6).

6. The valve position limiting device with position indication function according to claim 1, characterized in that: Also includes a bolt (10); The bolt (10) is used to connect the connection plate (1) and the valve actuator (7).

7. The valve position limiting device with position indication function according to claim 1, characterized in that: A second positioning stop (1c) is formed at one end of the connection disk (1) that is connected to the valve actuator (7).

8. The valve position limiting device with position indication function according to claim 1, characterized in that: Also includes a second positioning pin (11); A second positioning hole (1d) is formed at one end of the connection plate (1) connected to the valve actuator (7); The second positioning pin (11) is installed in the second positioning hole (1d) and is connected to the valve actuator (7).

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