Torque control box

Abstract

The utility model relates to the technical field of valves, and provides a torque control box not easy to damage a valve transmission component, which comprises a shell arranged on a gearbox, a torque control device is arranged in the shell, one end of the torque control device is connected to a transmission shaft of the gearbox, and a rotating rod for a user to screw the transmission shaft is arranged at one end of the transmission shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a torque control box. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. They are generally used in industrial pipelines that require quick response. In order to facilitate manual rotation or motor drive by users, some large valves usually have a gear box connected to the valve stem installed on the outside of the valve body to facilitate twisting. However, due to the presence of the gear box, it is easy for the opening and closing parts to be closed, and the user continues to twist, causing damage to the valve and valve transmission components. Utility Model Content

[0003] Therefore, in view of the above-mentioned problem, the utility model proposes a torque control box which is not easy to damage the valve transmission assembly.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is to provide a torque control box, including a shell arranged on the gear box, a torque control device which will idle when subjected to a large torque is arranged in the shell, one end of the torque control device is connected to the transmission shaft of the gear box, and the other end is provided with a rotating rod for the user to twist the transmission shaft.

[0005] A further improvement is that the torque control device includes: a central shaft, a connecting hole opened in the middle of the central shaft, the connecting hole is connected to the transmission shaft of the gear box, and the central shaft is also provided with a separation drive device for driving the central shaft to rotate and will slip when a certain torque is exceeded.

[0006] A further improvement is that the separation drive device includes: a connecting sleeve, a connecting ring platform arranged on the connecting sleeve, a limiting ring platform arranged on the central shaft for resisting the connecting ring platform, a first friction plate is arranged between the connecting ring platform and the limiting ring platform, and an adjustment device for adjusting the friction force between the connecting ring platform and the limiting ring platform is also arranged on the central shaft, and the connecting sleeve is connected to a rotating rod through a clamping device.

[0007] A further improvement is that the adjustment device includes: a second friction plate sleeved on the central shaft and with one end resisting against the connecting ring, a protective plate sleeved on the central shaft and with one end resisting against the second friction plate, a connecting thread opened on the central shaft, and a locking pressure block locked on the connecting thread for pressing the protective plate and the second friction plate to adjust the friction between the connecting sleeve and the transmission shaft.

[0008] A further improvement is that an elastic adjustment device for further adjusting the pressure is provided between the locking pressure block and the protection sheet.

[0009] A further improvement is that the elastic adjustment device includes: a plurality of conical pressing pieces sleeved on the central axis and with one end resisting against the protective piece, an adjustment block arranged between the conical pressing piece and the locking pressing piece, a plurality of adjustment threaded holes opened on the locking pressing piece and penetrating through the adjustment block, and an adjustment screw locked in the threaded hole for adjusting the pressure.

[0010] A further improvement is that the locking pressing block is further provided with a locking threaded hole perpendicular to the central axis for enhancing the connection stability between the locking pressing block and the central axis.

[0011] Further improvements are: the engaging device: a connecting disk arranged on the connecting sleeve at one end away from the connecting ring platform, a rotating disk arranged on the connecting disk, a first latching tooth arranged on the connecting disk facing the rotating disk, and a second latching tooth arranged on the rotating disk facing the connecting disk, wherein a plastic filling piece is arranged between the first latching tooth and the second latching tooth for connecting the first latching tooth and the second latching tooth.

[0012] The advantages and beneficial effects of the utility model are:

[0013] The structure is simple and easy to use. A torque control device is provided so that the valve will idle when subjected to a large torque, thereby stopping the output to the valve transmission component, thereby protecting the valve transmission component, avoiding damage to the valve transmission component, and extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front sectional schematic diagram of a torque control box of the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the interior of a torque control box of the utility model;

[0016] Figure 3 This is a bottom view of the central axis of a torque control box of the utility model;

[0017] In the figure: 1. housing; 2. transmission shaft; 3. rotating rod; 4. central axis; 5. connecting hole; 6. connecting sleeve; 7. connecting ring; 8. limiting ring; 9. first friction plate; 10. second friction plate; 11. protective plate; 12. locking pressure block; 13. conical pressure plate; 14. adjusting block; 15. adjusting threaded hole; 16. adjusting screw; 17. locking threaded hole; 18. connecting plate; 19. rotating plate; 20. first latch tooth; 21. second latch tooth; 22. plastic filling piece; 23. limiting groove. DETAILED DESCRIPTION

[0018] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] like Figure 1-Figure 3 As shown, a torque control box includes a shell 1 arranged on a gear box, wherein a torque control device which will idle when subjected to a large torque is arranged in the shell 1, and one end of the torque control device is connected to a transmission shaft 2 of the gear box and the other end is provided with a rotating rod 3 for a user to twist the transmission shaft 2.

[0020] In order to ensure that the user cannot control the rotation of the transmission shaft 2 by twisting the rotating rod 3 when the valve is fully opened and closed, the torque control device includes: a central shaft 4, a connecting hole 5 opened in the middle of the central shaft 4, the connecting hole 5 is connected to the transmission shaft 2 of the gear box, and the central shaft 4 is also provided with a separation drive device for driving the central shaft 4 to rotate and will slip when a certain torque is exceeded. The separation drive device includes: a connecting sleeve 6, a connecting ring 7 arranged on the connecting sleeve 6, and a limiting ring 8 arranged on the central shaft 4 for resisting the connecting ring 7. A first friction plate 9 is arranged between the connecting ring 7 and the limiting ring 8. The central shaft 4 is also provided with an adjustment device for adjusting the friction between the connecting ring 7 and the limiting ring 8, and the connecting sleeve 6 is connected to the rotating rod 3 through a clamping device.

[0021] In order to facilitate the adjustment of the friction force between the connecting sleeve 6 and the center shaft 4, the adjustment device includes: a second friction plate 10 sleeved on the center shaft 4 and with one end resisting the connecting ring 7, a protective plate 11 sleeved on the center shaft 4 and with one end resisting the second friction plate 10, a connecting thread opened on the center shaft 4, and a locking pressure block 12 locked on the connecting thread for pressing the protective plate 11 and the second friction plate 10 to adjust the friction force between the connecting sleeve 6 and the transmission shaft 2.

[0022] In order to more accurately adjust the friction force between the connecting sleeve 6 and the central shaft 4, an elastic adjustment device for further adjusting the pressure is also provided between the locking pressure block 12 and the protective sheet 11, and the elastic adjustment device includes: a plurality of conical pressure sheets 13 sleeved on the central shaft 4 and with one end resisting the protective sheet 11, an adjustment block 14 provided between the conical pressure sheet 13 and the locking pressure block 12, a plurality of adjustment threaded holes 15 opened on the locking pressure block 12 and penetrating through the adjustment block 14, and an adjustment screw 16 locked in the threaded hole for adjusting the pressure.

[0023] In order to enhance the stability of the torque control box during use, the locking pressure block 12 is further provided with a locking threaded hole 17 perpendicular to the central axis 4 for enhancing the connection stability between the locking pressure block 12 and the central axis 4 .

[0024] In order to facilitate the rotation of the central shaft 4 and provide another safeguard after the separation drive device is damaged, the engaging device includes: a connecting disk 18 arranged on the connecting sleeve 6 at one end away from the connecting ring platform 7, a rotating disk 19 arranged on the connecting disk 18, a first latching tooth 20 arranged on the connecting disk 18 facing the side of the rotating disk 19, and a second latching tooth 21 arranged on the rotating disk 19 facing the side of the connecting disk 18. A plastic filling piece 22 is arranged between the first latching tooth 20 and the second latching tooth 21 for connecting the first latching tooth 20 and the second latching tooth 21, and the plastic filling piece 22 is broken when subjected to excessive pressure, thereby avoiding affecting the valve transmission parts.

[0025] In order to enhance stability, a limiting groove 23 is provided on the central shaft 4 , and the protection sheet 11 is arranged to match the limiting groove 23 .

[0026] Working principle: During installation, the torque control box is installed on the gear box so that the transmission shaft 2 of the gear box is inserted into the connecting hole 5 in the central shaft 4 to complete the installation.

[0027] When in use, turning the rotating rod 3 can drive the rotating disk 19 to rotate, and then drive the connecting disk 18 to rotate, so that the connecting sleeve 6 rotates together. At this time, since the connecting sleeve 6 is connected to the central shaft 4 through the first friction plate 9 and the second friction plate 10, the connecting sleeve 6 will drive the central shaft 4 to rotate to open and close the valve.

[0028] When the valve opening and closing member rotates to the extreme position, the force required to further rotate the valve opening and closing member will increase, and this force will exceed the friction between the connecting sleeve 6, the first friction plate 9, the second friction plate 10 and the central shaft 4, causing the connecting sleeve 6 to idle on the central shaft 4, thereby protecting the transmission components of the valve and extending the service life of the valve.

[0029] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A torque control box, comprising a housing disposed on a gear box, characterized in that: The housing is provided with a torque control device which will idle when subjected to a large torque. One end of the torque control device is connected to the transmission shaft of the gear box, and the other end is provided with a rotating rod for a user to twist the transmission shaft.

2. A torque control box according to claim 1, characterized in that: The torque control device includes: a central shaft, a connecting hole opened in the middle of the central shaft, the connecting hole is connected to the transmission shaft of the gear box, and the central shaft is also provided with a separation drive device for driving the central shaft to rotate and slipping when a certain torque is exceeded.

3. A torque control box according to claim 2, characterized in that: The separation drive device includes: a connecting sleeve, a connecting ring set on the connecting sleeve, and a limiting ring set on the central shaft for resisting the connecting ring. A first friction plate is provided between the connecting ring and the limiting ring. An adjustment device for adjusting the friction between the connecting ring and the limiting ring is also provided on the central shaft. The connecting sleeve is connected to a rotating rod through a clamping device.

4. A torque control box according to claim 3, characterized in that: The adjustment device includes: a second friction plate sleeved on the central shaft and with one end resisting against the connecting ring, a protective plate sleeved on the central shaft and with one end resisting against the second friction plate, a connecting thread opened on the central shaft, and a locking pressure block locked on the connecting thread for pressing the protective plate and the second friction plate to adjust the friction between the connecting sleeve and the transmission shaft.

5. A torque control box according to claim 4, characterized in that: An elastic adjustment device for further adjusting the pressure is also provided between the locking pressure block and the protection sheet.

6. A torque control box according to claim 5, characterized in that: The elastic adjustment device includes: a plurality of conical pressing pieces sleeved on the central axis and with one end resisting against the protective piece, an adjustment block arranged between the conical pressing piece and the locking pressing piece, a plurality of adjustment threaded holes opened on the locking pressing piece and penetrating the adjustment block, and an adjustment screw locked in the threaded hole for adjusting the pressure.

7. A torque control box according to claim 4, characterized in that: The locking pressing block is also provided with a locking threaded hole perpendicular to the central axis for enhancing the connection stability between the locking pressing block and the central axis.

8. A torque control box according to claim 3, characterized in that: The locking device includes: a connecting disk arranged on the connecting sleeve at one end away from the connecting ring platform, a rotating disk arranged on the connecting disk, a first locking tooth arranged on the connecting disk facing the rotating disk, and a second locking tooth arranged on the rotating disk facing the connecting disk. A plastic filling piece is arranged between the first locking tooth and the second locking tooth for connecting the first locking tooth and the second locking tooth.

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