Valve head with limit indication

Abstract

The utility model relates to a valve head with a limiting indication function, and belongs to the field of detection devices.The valve head comprises a main shaft, the main shaft is sleeved with a shell, the outer wall, located in the shell, of the main shaft is connected with a connecting assembly, the connecting assembly is connected with a speed reduction piece, and the speed reduction effect of the speed reduction piece is the same as that of a speed reducer between the main shaft and a ball. The speed reducing part is connected with a pointer, and a dial plate used for displaying the rotation angle of the pointer is arranged on the lower side of the pointer. The device has the effect of accurately monitoring the rotating angle of the ball valve driven by the main shaft.

Description

Technical Field

[0001] The present application relates to the field of detection devices, and particularly to a valve head with a limit indication. Background Art

[0002] Inside a mesh pipeline, a ball valve is mostly used as a means to open and close the current pipeline. The ball valve mostly sets a sphere with a hole in the middle position between two adjacent pipelines, so that the water flow inside the two pipelines can pass through the hole in the middle of the sphere to realize the opening of the two pipelines. When it is necessary to close the connection of the two pipelines, only need to rotate the sphere by 90 degrees, so that the through hole in the middle of the sphere no longer communicates with the two adjacent pipelines, thus realizing the closing operation of the two adjacent pipelines.

[0003] Since the ball valve is generally large, a form of connecting the main shaft to a speed reducer is mostly adopted. After rotating the main shaft, the speed reducer drives the sphere to rotate, thereby reducing the force required to rotate the sphere. However, it is difficult to accurately control the angle of the main shaft driving the sphere to rotate during the rotation process by using this method, which easily leads to problems such as insufficient closing and opening of the ball valve. Utility Model Content

[0004] In order to accurately monitor the rotation angle of the main shaft driving the ball valve, the present application provides a valve head with a limit indication.

[0005] The valve head with a limit indication provided by the present application adopts the following technical solutions:

[0006] A valve head with a limit indication includes a main shaft. A housing is sleeved outside the main shaft. A connecting component is connected to the outer wall of the main shaft located inside the housing. The connecting component is connected to a speed reduction component. The speed reduction effect of the speed reduction component is the same as that of the speed reducer between the main shaft and the sphere. The speed reduction component is connected to a pointer. A dial for displaying the rotation angle of the pointer is provided below the pointer.

[0007] By adopting the above technical solutions, during the process of the main shaft driving the sphere inside the ball valve to rotate through the connected speed reducer, the main shaft drives the connected speed reduction component to rotate through the connecting component. The speed reduction component drives the pointer to rotate during the rotation process. Since the speed reduction ratio of the speed reduction component is the same as that of the speed reducer, the angle on the dial indicated by the pointer can display the angle of the main shaft driving the sphere inside the ball valve to rotate, thereby reducing the occurrence of the phenomenon that it is difficult to control the rotation angle of the main shaft driving the sphere inside the ball valve.

[0008] Optionally, the speed reduction component is set as a star-shaped speed reducer, and the star-shaped speed reducer is connected to the pointer through a speed reduction shaft.

[0009] By adopting the above technical solution, the star reducer is connected to the connection component, and the star reducer is connected to the pointer through the reduction shaft, so that the pointer can indicate the angle of rotation of the internal sphere of the current ball valve on the dial.

[0010] Optionally, a display component is further provided inside the housing near the top of the housing, and the display component is used to display the working state of the ball valve connected to the main shaft according to the rotation angle of the main shaft.

[0011] By adopting the above technical solution, by setting the display component to display the working state of the current ball valve, the phenomenon that the staff observes the unclear rotation angle of the internal sphere of the ball valve indicated by the pointer is reduced.

[0012] Optionally, the display component includes three display lights, one of the display lights is directly connected to the power supply, another display light is turned on when the ball valve connected to the main shaft is in the open state, and the last display light is turned on when the ball valve connected to the main shaft is in the closed state.

[0013] By adopting the above technical solution, by setting three display lights, when the device is in the working state and the ball valve is in the open and closed states, the display can be performed through the display lights, so that the staff can more clearly monitor the open and closed states of the current ball valve.

[0014] Optionally, the display component further includes two relatively arranged proximity switches, one of the proximity switches is electrically connected to the display light for displaying the open state of the ball valve, the other proximity switch is electrically connected to the display light for displaying the closed state of the ball valve, and the reduction shaft is connected with a rotating block, and the angle of rotation of the rotating block from one proximity switch to the other proximity switch is 90 degrees.

[0015] By adopting the above technical solution, during the rotation of the main shaft, the main shaft drives the connected reduction shaft to rotate, the reduction shaft drives the connected rotating block to rotate during the rotation process, and the rotating block makes the current proximity switch turn on and controls the display light connected to the current proximity switch to turn on by approaching the proximity switch during the rotation process, thereby displaying the working state of the current ball valve.

[0016] Optionally, the housing is further connected with a signal transmission module, and the signal transmission module is used to control the opening or closing of the electric tool rotating the main shaft according to the open or closed state of the current ball valve.

[0017] By adopting the above technical solution, by setting the signal transmission module, and the signal transmission module can control the opening or closing of the electric tool connected to the main shaft, the phenomenon that the staff fails to open or close the electric tool in time, resulting in a deviation in the rotation angle of the ball valve, is reduced.

[0018] Optionally, the signal transmission module is electrically connected to the two proximity switches and can control the signal transmission module to transmit signals through the proximity switches.

[0019] By adopting the above technical solution, by setting the connection between the signal transmission module and the proximity switch, when the main shaft drives the ball valve to open or close, the rotating block is driven to rotate to the corresponding proximity switch at the same time, so that the proximity switch controls the electric tool to close through the signal transmission module, thus realizing the operation of controlling the electric tool to close in time through the signal transmission module.

[0020] Optionally, a protective window is provided above the pointer and the three display lights, and the bottom side wall of the protective window is fixedly connected to the top wall of the housing.

[0021] By adopting the above technical solution, by setting the protective window, the phenomenon that it is difficult for the staff to observe the rotation angle of the inner sphere of the ball valve driven by the main shaft in time due to the accumulation of dust on the upper side of the dial or the display lights is reduced.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting the connection component, the decelerating member, the pointer and the dial, when the main shaft rotates, the pointer can indicate the rotation angle of the inner sphere of the connected ball valve;

[0024] 2. By setting the display component, it is convenient for the staff to observe the opening and closing states of the ball valve being operated currently;

[0025] 3. By setting the signal transmission module and electrically connecting the signal transmission module to the display component, the closing operation of the electric tool connected to the main shaft can be realized according to the current state of the ball valve, so that the inner sphere of the ball valve can stop in time when it rotates to an appropriate position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 is a cross-sectional view of the overall structure of an embodiment of the present application.

[0028] Figure 3 is a cross-sectional view of the connection relationship between the display deceleration shaft and the display component of an embodiment of the present application.

[0029] Description of reference numerals: 1. Main shaft; 2. Housing; 3. Connection assembly; 31. Driving wheel; 32. Intermediate wheel; 33. Driven wheel; 34. Coupling shaft; 4. Reducing member; 41. Star reducer; 42. Reducing shaft; 5. Pointer; 6. Dial; 7. Display assembly; 71. Display lamp; 72. Proximity switch; 73. Rotating block; 74. Protective window; 8. Signal transmission module. Detailed implementation manners

[0030] The following further describes the present application in detail in conjunction with the attached Figure 1 - attached Figure 3 drawings.

[0031] An embodiment of the present application discloses a valve head with limit indication. Referring to Figure 1 , Figure 2 and Figure 3 , it includes a main shaft 1, a housing 2 is sleeved outside the main shaft 1, the housing 2 is rotationally connected to the side wall of the main shaft 1, a connection assembly 3 is connected to a part of the main shaft 1 located inside the housing 2, the connection assembly 3 is connected to a reducing member 4, the reducing member 4 is connected to a pointer 5, and a dial 6 for displaying the rotation angle of the pointer 5 is arranged below the pointer 5.

[0032] During the process of the main shaft 1 driving the ball valve to rotate through a speed reducer, the main shaft 1 drives the reducing member 4 to rotate through the connection assembly 3. By setting the reduction ratio of the reducing member 4 connected to the main shaft 1 to be the same as that of the speed reducer, the rotation angle of the pointer 5 driven by the main shaft 1 is the same as the rotation angle of the pointer 5 driven by the main shaft 1 through the reducing member 4, so as to realize the display of the rotation angle of the ball valve through the pointer 5, thus facilitating the process for the staff to control the rotation angle of the ball inside the ball valve.

[0033] The connection assembly 3 includes a driving wheel 31 fixedly sleeved outside the main shaft 1, an intermediate wheel 32 is meshed on one side of the driving wheel 31, a driven wheel 33 is meshed on the side of the intermediate wheel 32 away from the driving wheel 31, and the middle of the driven wheel 33 is penetrated and fixedly connected with a coupling shaft 34.

[0034] The reducing member 4 includes a star reducer 41 connected to the coupling shaft 34, a reducing shaft 42 is connected to the upper end of the star reducer 41, and the coupling shaft 34 can drive the coupling shaft 34 to rotate through the star reducer 41. The upper end of the coupling shaft 34 penetrates the top side wall of the housing 2 and is fixedly connected with the pointer 5, and the dial 6 is located below the pointer 5 and is fixedly connected with the outer top wall of the pointer 5.

[0035] During the rotation of the main shaft 1, the main shaft 1 drives the connected driving wheel 31 to rotate. During the rotation of the driving wheel 31, it drives the connected intermediate wheel 32 to rotate. During the rotation of the intermediate wheel 32, it drives the connected driven wheel 33 to rotate. During the rotation of the driven wheel 33, it drives the coupling shaft 34 to rotate. During the rotation of the coupling shaft 34, it drives the connected reduction shaft 42 to rotate through the star-shaped reducer 41. The reduction shaft 42 drives the pointer 5 to rotate, and the scale on the dial 6 is indicated by the pointer 5, so as to realize the monitoring of the rotation angle of the internal sphere of the ball valve connected by the main shaft 1.

[0036] A display component 7 is also connected inside the housing 2. The display component 7 is used to display the opening and closing state of the ball valve connected to the main shaft 1.

[0037] The display component 7 includes three display lights 71, and the upper parts of the three display lights 71 all penetrate through the top side wall of the housing 2. The display component 7 also includes two proximity switches 72 arranged oppositely around the reduction shaft 42. A rotating block 73 is fixedly connected to the outer wall of the reduction shaft 42. The rotation angle of the rotating block 73 from one proximity switch 72 to the other proximity switch 72 is 90 degrees, and when the rotating block 73 approaches each proximity switch 72, it can control the current proximity switch 72 to turn on.

[0038] One of the display lights 71 is electrically connected to the power supply. Another display light 71 is electrically connected to the power supply through one of the proximity switches 72 and is used to display the open state of the ball valve connected to the main shaft 1. The remaining display light 71 is electrically connected to the power supply through the remaining other proximity switch 72 and is used to display the closed state of the ball valve connected to the main shaft 1.

[0039] During the actual use process, when the main shaft 1 rotates to drive the connected reduction shaft 42 to rotate, at this time, the power supply is for one of the display lights 71 directly connected to the power supply. The turning on indicates that the current device is in the working state. At this time, according to the rotation position of the rotating block, when the rotating block is located at one of the proximity switches 72, the display light 71 connected to the current proximity switch 72 turns on, so as to display the state of the ball valve connected to the current rotating shaft, which facilitates the staff to observe the current open state process of the ball valve connected to the main shaft 1.

[0040] The housing 2 is also equipped with a signal transmission module 8. The signal transmission module 8 is electrically connected to the power supply through two proximity switches 72, and the signal transmission module 8 is electrically connected to an electric tool that is connected to the main shaft 1 externally and is used to drive the main shaft 1 to rotate. The electric tool is not shown in the figure.

[0041] By setting up the signal transmission module 8, when the rotating block is on one side of one of the proximity switches 72 and the display lamp 71 indicating the closed state of the ball valve is turned on, the signal transmission module 8 controls the power tool to turn off; when the rotating block is on one side of the other proximity switch 72 and the display lamp 71 indicating the open state of the ball valve is turned on, the signal transmission module 8 controls the power tool to close; only when the display lamp indicating the power supply alone lights up, the signal transmission module controls the power tool to start, and the direction in which the power tool drives the main shaft 1 to rotate is adjusted manually.

[0042] A protective window 74 is provided above the pointer 5, the dial 6 and the three display lamps 71. The bottom wall of the protective window 74 is fixedly connected to the top wall of the housing 2, and the protective window 74 is made of glass.

[0043] By setting up the protective window 74, the protection of the pointer 5, the dial 6 and the display lamp 71 can be achieved.

[0044] The implementation principle of a valve head with limit indication in an embodiment of the present application is as follows: when driving the main shaft 1 to rotate by a power tool, first connect the power tool to the main shaft 1, and then supply power to the device. At this time, the display lamp 71 directly connected to the power supply lights up alone, and the signal transmission module 8 controls the power tool to turn on and drives the main shaft 1 to rotate.

[0045] When the main shaft 1 drives the connected ball valve to rotate to the open or closed state, the main shaft 1 drives the rotating block 73 connected to the reduction shaft 42 to move to one side close to one of the proximity switches 72. At this time, the signal transmission module 8 controls the power tool to turn off, and at this time the pointer 5 indicates the position on the dial 6 that shows the open or closed state of the ball valve.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A valve head with limit indication, characterized in that: The invention comprises a main shaft (1), the main shaft (1) is externally sleeved with a shell (2), the outer wall of the main shaft (1) located inside the shell (2) is connected to a connecting component (3), the connecting component (3) is connected to a speed reducer (4), the speed reducer (4) has the same speed reduction effect as the speed reducer between the main shaft (1) and the sphere, the speed reducer (4) is connected to a pointer (5), and a dial (6) for displaying the rotation angle of the pointer (5) is provided on the lower side of the pointer (5).

2. A valve head with limit indication according to claim 1, characterized in that: The speed reducer (4) is configured as a star-shaped speed reducer (41), and the star-shaped speed reducer (41) is connected to the pointer (5) via a speed reduction shaft (42).

3. A valve head with limit indication according to claim 2, characterized in that: A display component (7) is also provided inside the shell (2) near the top of the shell (2), and the display component (7) is used to display the working state of the ball valve connected to the main shaft (1) according to the rotation angle of the main shaft (1).

4. A valve head with limit indication according to claim 3, characterized in that: The display assembly (7) comprises three display lights (71), one of which is directly connected to a power source, another of which is turned on when the ball valve connected to the main shaft (1) is in an open state, and the last of which is turned on when the ball valve connected to the main shaft (1) is in a closed state.

5. A valve head with limit indication according to claim 4, characterized in that: The display assembly (7) further comprises two proximity switches (72) arranged opposite to each other, wherein one of the proximity switches (72) is electrically connected to a display light (71) for displaying an open state of the ball valve, and the other of the proximity switches (72) is electrically connected to a display light (71) for displaying a closed state of the ball valve, and the deceleration shaft (42) is connected to a rotating block (73), and the rotating block (73) rotates from one of the proximity switches (72) to the other of the proximity switches (72) at an angle of 90 degrees.

6. A valve head with limit indication according to claim 5, characterized in that: The housing (2) is also connected to a signal transmission module (8), and the signal transmission module (8) is used to control the opening or closing of the electric tool that rotates the main shaft (1) according to the current opening or closing state of the ball valve.

7. The valve head with limit indication according to claim 6, characterized in that: The signal transmission module (8) is electrically connected to the two proximity switches (72), and can control the signal transmission module (8) to transmit signals through the proximity switches (72).

8. The valve head with limit indication according to claim 4, characterized in that: A protective window (74) is provided on the upper side of the pointer (5) and the three display lights (71), and the bottom side wall of the protective window (74) is fixedly connected to the top wall of the housing (2).

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