Opening and closing device for large-diameter valve detection

Abstract

The utility model discloses an opening and closing device for detecting a large-diameter valve, and relates to the technical field of valve opening and closing auxiliary equipment, in particular to the opening and closing device for detecting the large-diameter valve, which comprises a shell, a driving part, a control part and a clamping and fixing part for clamping and fixing the valve, the driving part is arranged on one side of the shell, and the control part is arranged on the other side of the shell. A linkage shaft is arranged in the shell in a penetrating manner; the servo motor is controlled to start through the control part and drives the linkage shaft to rotate after being decelerated through the speed reducer, the linkage shaft rotates at a low speed to drive the driving disc meshed with the linkage shaft to rotate, the driving disc rotates to drive the shaft sleeve to rotate, the shaft sleeve fixes the valve rod through the valve rod hole and drives the valve rod to rotate, and therefore the valve is rapidly opened or closed. The purpose of quickly opening or closing the valve is achieved, the efficiency of opening or closing the valve when the large-diameter valve is detected is greatly improved, the labor intensity of workers is reduced, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve opening and closing auxiliary equipment, in particular to an opening and closing device for detecting large-caliber valves. Background Art

[0002] The valve is a control component in the pipeline fluid delivery system, which is used to change the passage section and the flow direction of the medium. It has the functions of diversion, shutoff, throttling, check, diversion or overflow pressure relief. The valves used for fluid control are of various varieties and specifications, from the simplest shut-off valve to the various valves used in extremely complex automatic control systems. The nominal diameter of the valve ranges from extremely small instrument valves to industrial pipeline valves with a diameter of 10m. It can be used to control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluids. During the valve detection process, the valve needs to be opened or closed to meet the needs of valve detection. In the current valve production and detection process, manual operation is generally used for the opening or closing of the valve, which is very wasteful of manpower. At the same time, the opening or closing of large-diameter valves requires two people to cooperate at the same time to complete, which has high labor costs and low efficiency.

[0003] In the published Chinese patent application, the publication number is CN102384299B, and the patent name is: a valve rapid switching device. Although the connecting bolt is connected to the seat of the butterfly valve through the connecting hole of the gear box, and the valve stem of the butterfly valve is connected to the gear of the rapid switching device with a key, when the electromagnetic clutch is energized and attracted, the closing action of the butterfly valve is realized by starting the multi-turn electric device. After the butterfly valve is closed, the multi-turn electric device stops running; when the electromagnetic clutch loses power and separates, the potential energy stored in the combination spring is quickly released to realize the rapid opening of the butterfly valve. However, this prior art is only applicable to the process of rapid closing of the valve after opening. When the device shown in the prior art is used to close the valve, the combination spring is in a state of storing potential energy. When the electromagnetic clutch loses power, the butterfly valve is quickly opened again. In the process of opening and closing the valve, it is impossible to effectively separate the opening and closing of the valve separately, that is, this prior art is only applicable to the continuous opening and closing of the valve, but not to the process of opening or closing the valve separately. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides an opening and closing device for detecting large-caliber valves, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: an opening and closing device for large-caliber valve detection, comprising a shell, a driving component, a control component, and a clamping component for clamping and fixing the valve, the driving component is arranged on one side of the shell, a linkage shaft is arranged through the inside of the shell, the driving component is transmission-connected with the linkage shaft, and an outer side wall of one end of the linkage shaft is threaded; the clamping component is arranged on the shell, the clamping component comprises a positioning shell, a sleeve, and a driving disk, the positioning shell is in the shape of a circular disk as a whole, the driving disk is rotatably arranged in the positioning shell, the driving disk and the positioning shell are both provided with mounting grooves for installing the sleeves at the center of the middle circle, the sleeves are fixedly installed with the driving disk at the mounting grooves by a plurality of fixing bolts, a clamping position for positioning the valve stem is provided on the positioning shell, and a valve stem hole is provided in the middle of the sleeve; the linkage shaft is transmission-connected with the driving disk.

[0008] Optionally, the driving components include a servo motor and a reducer, respectively. The reducer is installed on the output shaft end of the servo motor, and the servo motor and the reducer are coaxially connected to each other, and the reducer is connected to one end of the linkage shaft.

[0009] Optionally, the driving component also includes a chain, a driving sprocket is fixedly mounted on the output shaft end of the reducer, a driven sprocket is fixedly mounted on one end of the linkage shaft, and the chain is wound around the outer peripheral teeth of the driving sprocket and the driven sprocket.

[0010] Optionally, the shell includes a first shell, a second shell, and a third shell, one side of the second shell is fixedly connected to the first shell, and the other side of the second shell is fixedly connected to the third shell, the first shell is in the shape of a long cylinder, and a bearing is arranged inside one end of the first shell away from the second shell.

[0011] Optionally, the linkage shaft passes through the first shell, the second shell, and the third shell, and one end of the linkage shaft is rotatably connected to the first shell via a bearing, and the other end of the linkage shaft is rotatably connected to the third shell.

[0012] Optionally, the control component includes a control box, a rotary encoder, and an electromagnetic brake. The control box is fixedly mounted on the second shell. A control board is disposed in the control box. The control board is respectively connected to the rotary encoder and the electromagnetic brake control. The rotary encoder is disposed in the second shell and assembled on a linkage shaft. The electromagnetic brake is disposed on the output shaft of the servo motor.

[0013] Optionally, the control board may be one of a single chip microcomputer, an editable logic controller, and a microprocessor.

[0014] Optionally, the outer peripheral edge of the driving disk is threaded, and the outer peripheral thread of the driving disk is threadedly engaged with the outer side wall of the linkage shaft.

[0015] Optionally, a positioning bolt for fixing the valve stem is provided on the positioning shell and at the locking position.

[0016] (III) Beneficial effects

[0017] The utility model provides an opening and closing device for large-caliber valve detection, which has the following beneficial effects:

[0018] 1. The opening and closing device for detecting large-diameter valves has the effect of quickly opening or closing the valve through the coordinated arrangement of a driving component, a control component, and a fixing component. The servo motor is started by the control component, and the servo motor drives the linkage shaft to rotate after being decelerated by a reducer. The linkage shaft rotates at a low speed to drive the driving disk engaged with it to rotate. The rotation of the driving disk drives the shaft sleeve to rotate, and the shaft sleeve fixes the valve stem through the valve stem hole and drives the valve stem to rotate, thereby quickly opening or closing the valve, achieving the purpose of quickly opening or closing the valve, greatly improving the efficiency of opening or closing the valve when detecting large-diameter valves, reducing the labor intensity of workers, and reducing labor costs.

[0019] 2. The opening and closing device for large-caliber valve detection has the effect of effectively controlling the clockwise or counterclockwise rotation of the servo motor output shaft and effectively controlling the rotation time of the servo motor output shaft through the coordinated setting of the control board, the servo motor, the rotary encoder, and the linkage shaft. The rotary encoder is used to measure the rotation speed of the linkage shaft and convert the angular displacement and speed mechanical quantity of the linkage shaft into corresponding electrophoresis pulses. One-way output means that the output of the rotary encoder is a group of pulses, while the dual-channel output rotary encoder outputs two groups of A / B pulses with a phase difference of 90 degrees. Through these two groups of pulses, not only the rotation speed can be measured, but also the direction of rotation of the linkage shaft can be determined. The control board is used to control the rotation speed and direction of the servo motor output shaft according to the signal transmitted by the rotary encoder. The control of the speed and direction of the servo motor output shaft is achieved by controlling the speed and direction of the shaft sleeve, so that the shaft sleeve can open the valve in the clockwise direction or close the valve in the counterclockwise direction at a reasonable speed, thereby achieving the purpose of quickly and effectively opening or closing the valve within a controllable range. The process of opening or closing the valve can be carried out separately, and the valve can be selectively opened or closed without affecting the overall detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of an opening and closing device for large-caliber valve detection according to the utility model;

[0022] Figure 2 This is a front view structural schematic diagram of an opening and closing device for detecting large-caliber valves according to the utility model;

[0023] Figure 3 This is a left-side structural schematic diagram of an opening and closing device for detecting large-caliber valves according to the utility model;

[0024] Figure 4 This is a right-side structural schematic diagram of an opening and closing device for detecting large-caliber valves according to the utility model;

[0025] Figure 5 This is a schematic diagram of the top view of the structure of an opening and closing device for detecting large-caliber valves according to the utility model;

[0026] Figure 6 This is a front view cross-sectional structural schematic diagram of an opening and closing device for detecting large-caliber valves according to the utility model;

[0027] Figure 7 The utility model is a three-dimensional structural schematic diagram of an opening and closing device sleeve for detecting large-caliber valves.

[0028] In the figure: 1. Shell; 101. First shell; 102. Second shell; 103. Third shell; 2. Positioning shell; 201. Fixing position; 202. Positioning bolt; 3. Bushing; 301. Fixing bolt; 302. Valve stem hole; 4. Control box; 5. Servo motor; 6. Motor support; 7. Fixing plate; 8. Driving sprocket; 9. Driven sprocket; 10. Chain; 11. Protective cover; 12. Reducer; 13. Linkage shaft; 14. Bearing; 15. Rotary encoder; 16. Drive disk. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, 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 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. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0031] Embodiment 1

[0032] See also Figures 1 to 7 The utility model provides a technical solution: the opening and closing device for large-diameter valve detection shown in the application is used in conjunction with a large-diameter valve in specific implementation, and the device is mainly used to drive the valve to open or close. The valve includes a valve stem.

[0033] A kind of opening and closing device for large-caliber valve detection includes a housing 1, a driving component, a control component, and a clamping component for clamping and fixing the valve. The driving component is arranged on one side of the housing 1, and a linkage shaft 13 is arranged inside the housing 1. The driving component is connected to the linkage shaft 13 by transmission, and the outer wall of one end of the linkage shaft 13 is threaded. The clamping component is arranged on the housing 1, and the clamping component includes a positioning shell 2, a sleeve 3, and a driving disk 16. The positioning shell 2 is in the shape of a disk as a whole, and the driving disk 16 is rotatably arranged in the positioning shell 2. The driving disk 16 and the positioning shell 2 are provided with a mounting groove for installing the sleeve 3 at the center of the middle circle. The sleeve 3 is fixedly installed with the driving disk 16 at the mounting groove by a plurality of fixing bolts 301. The positioning shell 2 is provided with a clamping position 201 for positioning the valve stem, and the positioning shell 2 is provided with a positioning bolt 202 for fixing the valve stem at the clamping position 201. The middle part of the sleeve 3 is provided with a valve stem hole 302; the linkage shaft 13 is connected to the driving disk 16 by transmission.

[0034] Among them, the driving component is used to generate a power source and drive the linkage shaft 13 to rotate, and the linkage shaft 13 rotates to drive the fixing component to work. The fixing component is used to fix the valve stem on the valve, and the fixing component drives the valve stem to rotate under the drive of the linkage shaft 13, so that the valve is opened. When opening or closing the valve, the driving component drives the linkage shaft 13 to rotate, the linkage shaft 13 drives the drive disk 16 to rotate, and the drive disk 16 drives the shaft sleeve 3 to rotate. The shaft sleeve 3 holds the valve stem through the valve stem hole 302, so when the shaft sleeve 3 rotates, it can drive the valve stem to rotate, thereby opening or closing the valve. The shaft sleeve 3 can be disassembled and replaced with the drive disk 16 through the fixing bolt 301. The positioning shell 2 is mainly used to support and fix the drive disk 16. The positioning shell 2 is coaxial with the drive disk 16, and the two are rotatably connected. At the same time, the positioning shell 2 is wrapped around the outside of the drive disk 16, which can play a protective role and prevent the drive disk 16 from hurting people.

[0035] Specifically, the driving components include a servo motor 5 and a reducer 12, wherein the reducer 12 is mounted on the output shaft end of the servo motor 5, and the servo motor 5 is coaxially connected to the reducer 12, and the reducer 12 is connected to one end of the linkage shaft 13. The outer peripheral edge of the driving disk 16 is threaded, and the outer peripheral thread of the driving disk 16 is threadedly engaged with the outer wall of the linkage shaft 13.

[0036] The servo motor 5 is used to provide a power source. After the servo motor 5 is started, the output shaft of the servo motor 5 drives the input shaft of the reducer 12, the output shaft end of the reducer 12 drives the linkage shaft 13 to rotate, the linkage shaft 13 rotates and drives the drive disk 16 engaged therewith to rotate, the drive disk 16 drives the shaft sleeve 3 to rotate, and the shaft sleeve 3 drives the valve stem to rotate.

[0037] Specifically, the housing 1 includes a first housing 101, a second housing 102, and a third housing 103. One side of the second housing 102 is fixedly connected to the first housing 101, and the other side of the second housing 102 is fixedly connected to the third housing 103. The first housing 101 is in the shape of a long cylinder, and a bearing 14 is arranged inside one end of the first housing 101 away from the second housing 102. The linkage shaft 13 runs through the first housing 101, the second housing 102, and the third housing 103, and one end of the linkage shaft 13 is rotatably connected to the first housing 101 through the bearing 14, and the other end of the linkage shaft 13 is rotatably connected to the third housing 103. Among them, the linkage shaft 13 is fixed in the housing 1, and the linkage shaft 13 is rotatably connected to the housing 1, and the housing 1 can protect the linkage shaft 13. The reducer 12 drives the linkage shaft 13 to rotate inside the housing 1, and the linkage shaft 13 rotates, and the linkage shaft 13 drives the driving disk 16 engaged therewith to rotate through the thread. A fixing plate 7 is fixedly connected to the third housing 103, and the servo motor 5 is fixedly mounted on the fixing plate 7. The motor support 6 is fixedly connected to the fixing plate 7 .

[0038] The control components include a control box 4, a rotary encoder 15, and an electromagnetic brake. The control box 4 is fixedly mounted on the second housing 102. A control board is disposed in the control box 4. The control board is respectively connected (including electrical connection) to the rotary encoder 15, the electromagnetic brake, and the servo motor 5. The rotary encoder 15 is disposed in the second housing 102, and the rotary encoder 15 is assembled on the linkage shaft 13. The electromagnetic brake is disposed on the output shaft of the servo motor 5. The control board may be one of a single-chip microcomputer, an editable logic controller, and a microprocessor.

[0039] Among them, the control board is equipped with a logic control program and a timing control program to meet the control needs of the control components of the device shown in this application to control the driving components. The electromagnetic brake is used to stop the output shaft of the servo motor 5, so that the output shaft of the servo motor 5 stops rotating quickly to meet the needs of the servo motor 5 for fast reversing. The rotary encoder 15 is used to measure the rotation speed of the linkage shaft 13, and the angular displacement and speed mechanical quantity of the linkage shaft 13 can be converted into the corresponding electrophoretic impulse output. One-way output means that the output of the rotary encoder 15 is a group of pulses, and the dual-way output rotary encoder 15 outputs two groups of A / B pulses with a phase difference of 90 degrees. Through these two groups of pulses, not only the rotation speed can be measured, but also the direction of rotation of the linkage shaft 13 can be determined. Therefore, the size and direction of the rotation speed can be displayed on the control, so that the required speed of the servo motor 5 can be controlled through the control board. By using the control board to control the speed and direction of the output shaft of the servo motor 5, the speed and direction of the sleeve 3 are controlled, thereby controlling the speed and direction when driving the valve stem to meet the speed and direction requirements when opening or closing the valve.

[0040] The opening and closing device for large-diameter valve detection shown in this application also includes other parts and electrical components, so that the equipment can meet the implementation needs according to the corresponding production scenarios during specific implementation.

[0041] When opening the valve: according to the position of the valve, the valve stem hole 302 of the sleeve 3 is rotated to the corresponding angle, and the device shown in the present application is installed on the valve; the valve stem is positioned by using the retaining position 201; the servo motor 5 is started by the control panel, and the output shaft end of the servo motor 5 rotates clockwise, the output shaft of the servo motor 5 drives the reducer 12, the reducer 12 drives the linkage shaft 13 to rotate clockwise, the linkage shaft 13 drives the drive disk 16 to rotate clockwise, the drive disk 16 drives the sleeve 3 to rotate clockwise, the sleeve 3 holds the valve stem through the valve stem hole 302, so when the sleeve 3 rotates in the clockwise direction, it can drive the valve stem to rotate, thereby opening the valve.

[0042] When closing the valve: according to the position of the valve, the valve stem hole 302 of the sleeve 3 is rotated to the corresponding angle, and the device shown in the present application is installed on the valve; the valve stem is positioned by using the retaining position 201; the servo motor 5 is started by the control panel, and the output shaft end of the servo motor 5 rotates counterclockwise, the output shaft of the servo motor 5 drives the reducer 12, the reducer 12 drives the linkage shaft 13 to rotate counterclockwise, the linkage shaft 13 drives the drive disk 16 to rotate counterclockwise, the drive disk 16 drives the sleeve 3 to rotate counterclockwise, the sleeve 3 holds the valve stem through the valve stem hole 302, so when the sleeve 3 rotates counterclockwise, it can drive the valve stem to rotate, thereby closing the valve.

[0043] Embodiment 2

[0044] See also Figures 1 to 7 The difference between this embodiment and the first embodiment is that the driving component further includes a chain 10, a driving sprocket 8 is fixedly mounted on the output shaft end of the reducer 12, a driven sprocket 9 is fixedly mounted on one end of the linkage shaft 13, and the chain 10 is wound around the outer peripheral teeth of the driving sprocket 8 and the driven sprocket 9. A protective cover 11 is arranged on the outer side of the chain 10.

[0045] Among them, after the servo motor 5 is started, it drives the reducer 12, the reducer 12 drives the driving sprocket 8 to rotate, the driving sprocket 8 drives the driven sprocket 9 to rotate through the chain 10, the driven sprocket 9 drives the linkage shaft 13 to rotate, the linkage shaft 13 drives the driving disk 16 engaged with it to rotate, the driving disk 16 drives the shaft sleeve 3 located therein to rotate, the shaft sleeve 3 rotates to drive the valve stem, thereby opening or closing the valve.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An opening and closing device for large-caliber valve detection, characterized in that: The invention comprises a housing (1), a driving component, a control component, and a fixing component for fixing a valve, wherein the driving component is arranged on one side of the housing (1), a linkage shaft (13) is arranged inside the housing (1), the driving component is drivingly connected to the linkage shaft (13), and an outer side wall of one end of the linkage shaft (13) is threaded; The fixing component is arranged on the housing (1), and comprises a positioning shell (2), a shaft sleeve (3), and a driving disk (16); the positioning shell (2) is in the shape of a disk as a whole; the driving disk (16) is rotatably arranged in the positioning shell (2); a mounting groove for mounting the shaft sleeve (3) is provided at the center of the middle of the driving disk (16) and the positioning shell (2); the shaft sleeve (3) is fixedly mounted with the driving disk (16) at the mounting groove by a plurality of fixing bolts (301); a fixing position (201) for positioning a valve stem is provided on the positioning shell (2); a valve stem hole (302) is provided in the middle of the shaft sleeve (3); and the linkage shaft (13) is drivingly connected to the driving disk (16).

2. The opening and closing device for large-caliber valve detection according to claim 1 is characterized in that: The driving components respectively include a servo motor (5) and a reducer (12); the reducer (12) is mounted on the output shaft end of the servo motor (5); the servo motor (5) and the reducer (12) are coaxially connected in driving relation; and the reducer (12) is connected in driving relation to one end of a linkage shaft (13).

3. The opening and closing device for large-caliber valve detection according to claim 2 is characterized in that: The driving component also includes a chain (10), a driving sprocket (8) is fixedly mounted on the output shaft end of the reducer (12), a driven sprocket (9) is fixedly mounted on one end of the linkage shaft (13), and the chain (10) is wound around the outer peripheral teeth of the driving sprocket (8) and the driven sprocket (9).

4. The opening and closing device for detecting large-caliber valves according to claim 1 is characterized in that: The shell (1) comprises a first shell (101), a second shell (102), and a third shell (103); one side of the second shell (102) is fixedly connected to the first shell (101), and the other side of the second shell (102) is fixedly connected to the third shell (103); the first shell (101) is in the shape of a long cylinder; a bearing (14) is provided inside one end of the first shell (101) away from the second shell (102).

5. The opening and closing device for detecting large-caliber valves according to claim 4 is characterized in that: The linkage shaft (13) passes through the first housing (101), the second housing (102), and the third housing (103), and one end of the linkage shaft (13) is rotationally connected to the first housing (101) via a bearing (14), and the other end of the linkage shaft (13) is rotationally connected to the third housing (103).

6. The opening and closing device for detecting large-caliber valves according to claim 5, characterized in that: The control component comprises a control box (4), a rotary encoder (15), and an electromagnetic brake. The control box (4) is fixedly mounted on the second housing (102). A control board is arranged inside the control box (4). The control board is respectively connected to the rotary encoder (15) and the electromagnetic brake for control. The rotary encoder (15) is arranged inside the second housing (102), and the rotary encoder (15) is assembled on the linkage shaft (13). The electromagnetic brake is arranged on the output shaft of the servo motor (5).

7. The opening and closing device for detecting large-caliber valves according to claim 6, characterized in that: The control board can be one of a single chip microcomputer, an editable logic controller, and a microprocessor.

8. The opening and closing device for detecting large-caliber valves according to claim 3 is characterized in that: The outer peripheral edge of the driving disk (16) is in a threaded shape, and the outer peripheral thread of the driving disk (16) is threadedly engaged with the outer side wall thread of the linkage shaft (13).

9. The opening and closing device for detecting large-caliber valves according to claim 1, characterized in that: A positioning bolt (202) for fixing the valve stem is arranged on the positioning shell (2) and located at the locking position (201).

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