Ratchet torque type valve hand wheel device

Abstract

The utility model discloses a ratchet torque type valve hand wheel device, and relates to the field of valve hand wheels. The hand wheel is connected with a valve rod of the valve, and a plurality of power-assisted rod holes are formed in the hand wheel; the ratchet wheel assembly is installed in the center of the hand wheel, a hand wheel inner sleeve is fixed to the ratchet wheel assembly, and when the ratchet wheel assembly rotates, the valve rod is connected and driven to act through the hand wheel inner sleeve; and the torque handle (power-assisted rod) is selectively inserted into the power-assisted hole of the hand wheel and is used for applying torque to the hand wheel. The problem that a valve is inconvenient to open and close due to the fact that an F wrench (frequently changes positions) is used in a narrow area is solved, the valve is opened and closed through torque display, and the valve is prevented from being damaged due to untight closing or over-force closing; the hand wheel is provided with the torque type stress application rod, and an operator does not need to carry with an F wrench and other auxiliary tools to open and close the valve on site.

Description

Technical Field

[0001] The utility model relates to the field of valve hand wheels, in particular to a ratchet torque type valve hand wheel device. Background Art

[0002] Existing valves are mainly opened and closed by handwheels and handles. Handwheels are mainly used for valves with large diameters, heavy loads, large operating torques, and that require precise adjustment. The existing technologies are as follows:

[0003] 1. The valve handwheel is generally round, and auxiliary tools such as F wrenches are usually required when performing valve opening / closing operations. In a narrow space, the use of F wrenches is limited, and when using F wrenches, the position of the F wrenches needs to be changed frequently, which brings inconvenience to the operation;

[0004] 2. When the handwheel valve is switched on or off, the valve position can only be determined manually, and it is impossible to operate the valve with precise force. Insufficient force will cause the valve to close loosely, and excessive force will damage the valve.

[0005] 3. The operation of handwheel valve switches usually requires auxiliary tools such as F wrenches. Operators are usually required to carry F wrenches to the site at any time to perform operations. They also need to carry other tools such as walkie-talkies. In many cases, they need to climb and cross, which makes it difficult for operators to reach the site and also poses a safety hazard. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a ratchet torque valve handwheel device to solve the problem of inconvenience in opening and closing valves due to the use of an F wrench (frequent changes of position) in a narrow area. The valve switch has a torque display to prevent the valve from being loosely closed or damaged by closing with excessive force. The handwheel is provided with a torque handle, and the operator does not need to carry auxiliary tools such as an F wrench to open and close the valve on site.

[0007] The purpose of the utility model is achieved through the following technical solutions: This ratchet torque valve handwheel device includes:

[0008] A hand wheel is connected to the valve stem of the valve (to drive the valve stem to rotate and open or close the valve), and a horizontal booster rod hole and a vertical booster rod hole are provided on the hand wheel;

[0009] A ratchet assembly is installed at the center of the handwheel, and a handwheel inner sleeve is fixed on the ratchet assembly. When the ratchet assembly rotates, the valve stem is driven through the handwheel inner sleeve;

[0010] An auxiliary booster rod, used to selectively be inserted into the vertical booster rod hole and the horizontal booster rod hole of the hand wheel, to assist in opening / closing the valve when the valve torque is not large;

[0011] The torque handle can be mounted on the auxiliary booster lever to open or close the valve according to the valve design torque.

[0012] As a further technical solution, the ratchet assembly includes a housing and a ratchet that is relatively rotatably arranged in the housing. The inner sleeve of the handwheel is installed on the inner hole of the ratchet and is fixed to the valve stem with a locking nut. A switching groove is formed through the housing for rotatably setting a ratchet switching block. The lower part of the ratchet extends into the switching groove. Tooth grooves facing opposite directions are formed on the top of both sides of the ratchet switching block for cooperating with the ratchet teeth on the outer edge of the ratchet. The torque direction of the ratchet is switched by rotating the ratchet switching block, thereby controlling the one-way opening or one-way closing of the valve.

[0013] As a further technical solution, a switching block spring is embedded in the shell below the switching slot, and a tightening piece fixed on the top of the switching block spring extends into the switching slot to tighten the ratchet switching block.

[0014] As a further technical solution, the ratchet switching block is rotatably connected in the switching slot of the shell through a fixing screw.

[0015] As a further technical solution, a plurality of handwheel reinforcing ribs are evenly arranged on the handwheel along the radial direction to support the ratchet assembly.

[0016] As a further technical solution, the power rod hole includes a horizontal power rod hole and a vertical power rod hole. The horizontal power rod hole is radially opened on the outer circumference of the handwheel side wall, and the vertical power rod hole is axially opened on the outer circumference of the handwheel top.

[0017] As a further technical solution, the horizontal booster rod hole and the vertical booster rod hole are used to selectively insert an auxiliary booster rod to assist in opening or closing the valve.

[0018] As a further technical solution, the torque handle is connected to the auxiliary power rod through the opening on the adjustment rod to drive the power rod to rotate. The adjustment rod is used to adjust the torque output by the torque handle and display it through the torque display screen on the torque handle.

[0019] As a further technical solution, the top of the torque handle is provided with an external rope hole, through which a metal connecting pendant is inserted, and when the booster rod is not used, it is hung on the valve handwheel for standby use.

[0020] As a further technical solution, the auxiliary power rod and the torque handle are made of copper, which will not cause sparks when inserted into the circumferential power rod hole and can be used in an explosion-proof environment with flammable gas.

[0021] The beneficial effects of the utility model are:

[0022] 1. The ratchet handwheel is used to utilize the ratchet principle when performing valve opening / closing operations, eliminating the need to use and frequently switch the position of the F wrench;

[0023] 2. A power lever is set in the horizontal or vertical direction of the hand wheel to replace auxiliary tools such as F wrenches that operators need to carry with them;

[0024] 3. The booster rod installed on the handwheel (horizontal or vertical can be switched according to the needs of the valve) is made of copper and can be used in explosion-proof environments;

[0025] 4. Use the torque handle to open or close the valve according to the designed theoretical torque, which can not only ensure that the valve is closed tightly, but also avoid over-closing due to excessive force and damage to the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model after assembly.

[0027] Figure 2 It is a structural schematic diagram of the ratchet assembly in the utility model.

[0028] Figure 3 It is a structural schematic diagram of the torque handle in the utility model.

[0029] Explanation of the accompanying drawings: handwheel 1, ratchet 2, horizontal assist rod hole 3, vertical assist rod hole 4, handwheel reinforcement rib 5, ratchet switching block 6, handwheel inner sleeve 7, auxiliary assist rod 8, fixing screw 9, switching block spring 10, housing 11, switching groove 12, tooth groove 13, tightening piece 14, locking nut 15, torque display screen 16, adjustment rod 17, external rope hole 18. DETAILED DESCRIPTION

[0030] The utility model will be described in detail below with reference to the accompanying drawings:

[0031] Example: As shown in the attached Figures 1 to 3 As shown, the ratchet torque valve handwheel device includes a handwheel 1, a ratchet 2, a horizontal assist rod hole 3, a vertical assist rod hole 4, a handwheel reinforcing rib 5, a ratchet switching block 6, a handwheel inner sleeve 7, an auxiliary assist rod 8, a fixing screw 9, a switching block spring 10, a housing 11, a switching groove 12, a tooth groove 13, a tightening member 14, a locking nut 15, a torque display screen 16, an adjusting rod 17 and an external rope hole 18.

[0032] Reference Figure 1When assembling with the valve, the handwheel 1 is rotatably connected to the valve stem of the valve, and then the ratchet assembly is installed at the center of the handwheel 1 (coaxial with the valve stem). The ratchet assembly includes a housing 11 and a ratchet 2 relatively rotatably arranged in the housing 11. A handwheel inner sleeve 7 is tightly sleeved on the inner hole of the ratchet 2. When assembling, the handwheel inner sleeve 7 is connected to the valve stem and fixed with a locking nut 15. When the ratchet assembly rotates, the valve stem is synchronously driven by the handwheel inner sleeve 7. Preferably, three to five handwheel reinforcing ribs 5 are evenly arranged on the handwheel 1 in the radial direction (the number of reinforcing ribs is determined according to the diameter of the handwheel), and the ratchet assembly is supported and positioned on the handwheel reinforcing ribs 5.

[0033] like Figure 2 As shown, the ratchet assembly is installed in the housing 11 at the center of the handwheel, and a switching groove 12 is provided on opposite sides of the housing 11. The ratchet switching block 6 is rotatably connected to the switching groove 12 of the housing 11 through a fixing screw 9, and the left and right sides of the ratchet switching block 6 extend from the switching groove 12, which can be switched by the operator. The lower part of the ratchet 2 extends into the switching groove 12, and tooth grooves 13 facing opposite directions are provided on the top of both sides of the ratchet switching block 6. Both tooth grooves 13 can match the ratchet teeth on the outer edge of the ratchet 2. By switching the ratchet switching block 6 to change the tooth groove 13 that matches the ratchet teeth, the torque (rotation) direction of the ratchet 2 can be switched, thereby controlling the valve to be opened or closed in one direction. Preferably, a spring groove is opened in the shell 11 below the switching groove 12 for embedding and installing the switching block spring 10, and a tightening piece 14 is fixed at the top of the switching block spring 10. The tightening piece 14 extends into the switching groove 12 under the action of the switching block spring 10 and tightens the lower part of the ratchet switching block 6 to prevent the tooth groove 13 of the ratchet switching block 6 from disengaging from the ratchet teeth when the ratchet assembly is twisted.

[0034] like Figure 1 As shown, at least one horizontal booster rod hole 3 is radially opened on the outer circumference of the side wall of the handwheel 1, and at least one vertical booster rod hole 4 is axially opened on the outer circumference of the top of the handwheel 1. In different application scenarios, such as when the horizontal or vertical space is limited, the auxiliary booster rod 8 can be selectively inserted into the horizontal booster rod hole 3 or the vertical booster rod hole 4 to assist in opening or closing the valve.

[0035] For further information, see Attachment Figure 3An adjustment rod 17 is provided at one end of the torque handle, and the torque handle is connected to the auxiliary boost rod 8 through the opening on the adjustment rod 17, and drives the auxiliary boost rod 8 to rotate, thereby applying torque to the handwheel 1. The adjustment rod 17 is used to adjust the torque output by the torque handle, and is displayed on the torque display screen 16 on the torque handle. Preferably, the auxiliary boost rod 8 and the torque handle are both made of copper, and can be used in an explosion-proof environment, thereby improving the reliability of the handwheel device. An external hanging rope hole 18 is provided at the end of the torque handle for inserting a metal connecting pendant, and is hung on the valve handwheel for standby use when the boost rod is not used, thereby assisting in opening the valve.

[0036] The working principle of this utility model:

[0037] A ratchet assembly is designed and assembled at the center of the handwheel 1. By utilizing the one-way force principle of the ratchet 2, the handwheel 1 is rotated in the direction of the torque to drive the valve stem to move, thereby opening or closing the valve. The handwheel 1 is rotated in the reverse direction to release the rotation torque of the handwheel 1, and the handwheel 1 returns to the position before the action, so that it is convenient to rotate again to open or close the valve;

[0038] The top of the ratchet switch block 6 of the ratchet assembly is embedded with the ratchet teeth on the outer edge of the ratchet 2. The center fixing screw 9, the switch block spring 10 and the top tightening member 14 are used to manually change the meshing position of the ratchet switch block 6 and the ratchet teeth to achieve one-way opening or one-way closing of the valve.

[0039] The auxiliary booster rod 8 (made of copper in explosion-proof environment to avoid sparks from friction) can be inserted into the horizontal booster rod hole 3 or the vertical booster rod hole 4 separately, without the help of the torque handle, to assist in opening or closing the valve when the torque is not large;

[0040] The torque handle adjusts the torque size through the adjustment rod 17, and the torque can be displayed on the torque display screen 16 of the handle. The torque handle is connected to the auxiliary booster rod 8 and is connected to the valve handwheel 1 through the horizontal booster rod hole 3 or the vertical booster rod hole 4 to apply torque to open or close the valve.

[0041] The utility model adopts a ratchet handwheel and utilizes the one-way principle of the ratchet to open / close the valve along the direction of the torque (the direction of the torque is changed by a switching block, thereby realizing the operation of opening or closing the valve), and returns the handwheel to its original position in the reverse direction, without the need to frequently change the force application position of auxiliary tools such as an F wrench; a vertical or horizontal power-assisting rod is used on the edge of the handwheel to replace the handwheel operation, thereby solving the problem that the operator has to carry an F wrench with him; and a horizontal torque-assisting rod is used to control the torque during the operation of the valve switch, thereby ensuring that the valve is tightly closed and in place, and preventing the valve from being over-closed due to excessive force and damaging the valve.

[0042] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A ratchet torque valve handwheel device, characterized in that: include: A hand wheel (1) is rotatably connected to the valve stem of the valve, and a plurality of booster rod holes are provided on the hand wheel (1); A ratchet assembly is mounted at the center of the handwheel (1), a handwheel inner sleeve (7) is fixed to the ratchet assembly, and when the ratchet assembly rotates, the valve stem is connected and driven through the handwheel inner sleeve (7); and The torque handle is used to be selectively inserted into the booster rod hole of the hand wheel (1) to apply torque to the hand wheel (1).

2. The ratchet torque valve handwheel device according to claim 1, characterized in that: The ratchet assembly comprises a housing (11) and a ratchet (2) rotatably arranged in the housing (11); a handwheel inner sleeve (7) is mounted on the inner hole of the ratchet (2) and fixed to the valve stem by a locking nut (15); a switching groove (12) is provided through the housing (11) for rotatably setting a ratchet switching block (6); the lower part of the ratchet (2) extends into the switching groove (12); tooth grooves (13) facing opposite directions are provided on the top of both sides of the ratchet switching block (6) for cooperating with ratchet teeth on the outer edge of the ratchet (2); the torque direction of the ratchet (2) is switched by rotating the ratchet switching block (6), thereby controlling the one-way opening or one-way closing of the valve.

3. The ratchet torque valve handwheel device according to claim 2, characterized in that: A switching block spring (10) is embedded and installed in the housing (11) below the switching groove (12), and a tightening member (14) fixed on the top of the switching block spring (10) extends into the switching groove (12) to tighten the ratchet switching block (6).

4. The ratchet torque valve handwheel device according to claim 3, characterized in that: The ratchet switching block (6) is rotatably connected in the switching slot (12) of the housing (11) via a fixing screw (9).

5. The ratchet torque valve handwheel device according to claim 1, characterized in that: A plurality of handwheel reinforcing ribs (5) are evenly arranged on the handwheel (1) along the radial direction, for supporting the ratchet assembly.

6. The ratchet torque valve handwheel device according to claim 1, characterized in that: The power-assisting rod hole comprises a horizontal power-assisting rod hole (3) and a vertical power-assisting rod hole (4); the horizontal power-assisting rod hole (3) is radially provided on the outer circumference of the side wall of the hand wheel (1); and the vertical power-assisting rod hole (4) is axially provided on the outer circumference of the top of the hand wheel (1).

7. The ratchet torque valve handwheel device according to claim 6, characterized in that: The horizontal booster rod hole (3) and the vertical booster rod hole (4) are used to selectively insert an auxiliary booster rod (8) to assist in opening or closing the valve.

8. The ratchet torque valve handwheel device according to claim 7, characterized in that: The torque handle is connected to the auxiliary power rod (8) through an opening on the adjustment rod (17), driving the auxiliary power rod (8) to rotate. The adjustment rod (17) is used to adjust the torque output by the torque handle and display it on the torque display screen (16) on the torque handle.

9. The ratchet torque valve handwheel device according to claim 7 or 8, characterized in that: The auxiliary boosting rod (8) and the torque handle are made of copper.

10. The ratchet torque valve handwheel device according to claim 1, characterized in that: An external hanging rope hole (18) is provided at the end of the torque handle for inserting a metal connecting hanging piece.

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