Stop valve hand wheel lengthening device

Abstract

The utility model relates to the technical field of stop valves, in particular to a stop valve hand wheel lengthening device which comprises a stop valve body, a base is fixedly installed on the stop valve body, a support is fixedly installed on the base, a hand wheel body is rotatably installed on the base, and the lower end of the hand wheel body is fixedly connected with a sealing plate. The hand wheel body is fixedly connected with a rotating block with a T-shaped cross section, and the rotating block is connected with the base through a first torsion spring; a limiting opening is formed in the support, a lengthening rod is slidably installed in the limiting opening, the lengthening rod is connected with the rotating block through a pull rope, and a limiting assembly is arranged on the lengthening rod. When the distance between the operable position and the hand wheel body is far, an operator can conveniently adjust the angle of the sealing plate through the reinforcing rod, opening or closing of a valve can be conveniently and rapidly adjusted, and use of the stop valve is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a gate valve handwheel extension device. Background Technology

[0002] With the continuous development of society and the continuous progress of technology, the technology related to the handwheel of the gate valve is also constantly improving. At present, the gate valve can be opened and closed by manually operating the handwheel, which drives the sealing plate to rotate inside the gate valve and adjusts the angle and position of the sealing plate.

[0003] When the distance between the operable position and the handwheel is far, it is inconvenient for the operator to adjust the angle of the sealing plate by operating the handwheel, thus making it impossible to quickly adjust the opening or closing of the valve, which is not conducive to the use of the gate valve. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for extending the handwheel of a shut-off valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A stop valve handwheel extension device includes a stop valve body, a base fixedly mounted on the stop valve body, a support fixedly mounted on the base, a handwheel body rotatably mounted on the base, a sealing plate fixedly connected to the lower end of the handwheel body, and a rotating block with a T-shaped cross-section fixedly connected to the handwheel body. The rotating block is connected to the base via a first torsion spring. A limit port is provided on the support, and an extension rod is slidably mounted within the limit port. The extension rod is connected to the rotating block via a pull rope. A limit assembly is provided on the extension rod, and the limit assembly includes a slide plate slidably mounted on the extension rod. Multiple locking blocks are fixedly connected to the slide plate. A locking groove is provided on the upper inner wall of the limit port. A rotating assembly and a sliding assembly are provided inside the extension rod.

[0007] To better achieve the above objectives, the present invention adopts a further technical solution: the rotating assembly includes a rotating shaft rotatably installed inside the extension rod, a support block is fixedly connected to the rotating shaft, a second torsion spring is sleeved on the rotating shaft, one end of the second torsion spring is fixedly connected to the rotating shaft, the other end of the second torsion spring is fixedly connected to the inner wall of the extension rod, and the surface of the support block is in contact with the lower surface of the slide plate.

[0008] To better achieve the above objectives, the present invention adopts a further technical solution: the sliding assembly includes a movable strip slidably mounted on the extension rod, the movable strip having a concave cross-section, an extrusion plate fixedly connected to the movable strip, the rotating shaft having an L-shaped cross-section, a first spring fixedly connected to the inner wall of one side of the extension rod, the first spring being fixedly connected to the movable strip, an I-beam fixedly connected to one end of the extension rod, a rotating rod rotatably connected to the I-beam, and the surface of the rotating rod being in contact with the surface of the movable strip.

[0009] To better achieve the above objectives, the present invention adopts a further technical solution: the extended rod has two sliding rods via two return springs, and each sliding rod is fixedly connected to the lower surface of the slide plate.

[0010] The beneficial effects of this utility model are as follows: When in use, pushing the moving bar will cause the support block to change from a vertical state to an inclined state. After the locking block moves, it will disengage from the locking groove. Then, pushing the moving bar and the reinforcing rod simultaneously will cause the reinforcing rod to slide relative to the support. Under the transmission action of the pull rope, the rotating block will rotate relative to the base, and the handwheel body will rotate relative to the base at the same time. After the sealing plate rotates, a gap will exist between it and the inner wall of the gate valve body. At this time, the valve will open. Similarly, the valve can also be closed. When the distance between the operable position and the handwheel body is far, the operator can easily adjust the angle of the sealing plate through the reinforcing rod, which facilitates quick adjustment of the valve's opening or closing and is beneficial to the use of the gate valve. Attached Figure Description

[0011] Figure 1 This is a front view of the handwheel extension device for a shut-off valve proposed in this utility model.

[0012] Figure 2 This is a front structural diagram of the base and handwheel body in this utility model;

[0013] Figure 3 This is a partial internal structural diagram of the back of the reinforcing rod and the handwheel body in this utility model;

[0014] Figure 4 for Figure 3 A magnified view of part A in the image.

[0015] In the diagram: 1. Stop valve body, 2. Base, 3. Support, 4. Moving bar, 5. Rotating rod, 6. Slide plate, 7. Extension rod, 8. Locking block, 9. Pull rope, 10. Handwheel body, 11. Rotating block, 12. First torsion spring, 13. Slide rod, 14. First spring, 15. Support block, 16. Second torsion spring, 17. Rotating shaft, 18. Pressing plate. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Reference Figures 1-4 An extension device for a stop valve handwheel includes a stop valve body 1, a base 2 fixedly mounted on the stop valve body 1, a support 3 fixedly mounted on the base 2, a handwheel body 10 rotatably mounted on the base 2, a sealing plate fixedly connected to the lower end of the handwheel body 10, a rotating block 11 with a T-shaped cross-section fixedly connected to the handwheel body 10, the rotating block 11 being connected to the base 2 via a first torsion spring 12, a limit port being provided on the support 3, an extension rod 7 being slidably mounted within the limit port, the extension rod 7 being connected to the rotating block 11 via a pull rope 9, a limit assembly being provided on the extension rod 7, the limit assembly including a slide plate 6 slidably mounted on the extension rod 7, multiple locking blocks 8 being fixedly connected to the slide plate 6, a locking groove being provided on the upper inner wall of the limit port, and a rotating assembly and a sliding assembly being provided inside the extension rod 7.

[0018] The rotating assembly includes a rotating shaft 17 rotatably mounted inside the extension rod 7. A support block 15 is fixedly connected to the rotating shaft 17. A second torsion spring 16 is sleeved on the rotating shaft 17. One end of the second torsion spring 16 is fixedly connected to the rotating shaft 17, and the other end of the second torsion spring 16 is fixedly connected to the inner wall of the extension rod 7. The surface of the support block 15 is in contact with the lower surface of the slide plate 6. The sliding assembly includes a sliding strip 4 slidably mounted on the extension rod 7. The cross-section of the sliding strip 4 is U-shaped. A pressing plate 18 is fixedly connected to the sliding strip 4. The cross-section of the rotating shaft 17 is U-shaped. The extension rod 7 is L-shaped. A first spring 14 is fixedly connected to the inner wall of one side. The first spring 14 is fixedly connected to the moving bar 4. Pushing the moving bar 4 causes it to slide relative to the extension rod 7, and the first spring 14 deforms. In the initial state, the support block 15 is vertically set and the surface of the support block 15 is in contact with the surface of the slide plate 6. As the pressing plate 18 moves together with the moving bar 4, it will gradually move against the surface of the rotating shaft 17. The L-shaped rotating shaft 17 will rotate relative to the extension rod 7, and the second torsion spring 16 will deform.

[0019] One end of the extension rod 7 is fixedly connected to an I-beam frame, and a rotating rod 5 is rotatably connected to the I-beam frame. The surface of the rotating rod 5 is in contact with the surface of the moving strip 4. The rotating rod 5 is inclined, and when the surface of the rotating rod 5 is in contact with the surface of the moving strip 4, the rotating rod 5 has a good limiting effect on the moving strip 4, which can prevent the moving strip 4 from moving arbitrarily towards the extension rod 7. There are two sliding rods 13 on the extension rod 7 through two return springs. Each sliding rod 13 is fixedly connected to the lower surface of the slide plate 6. When the support block 15 changes from a vertical state to an inclined state, the sliding rod 13 will slide relative to the extension rod 7 under the elastic force of the return spring. After the locking block 8 moves, it will disengage from the locking groove.

[0020] In its initial state, the locking block 8 and the locking slot are engaged. During use, pushing the moving bar 4 causes it to slide relative to the extension rod 7, deforming the first spring 14. Initially, the support block 15 is vertically positioned, and its surface is in contact with the surface of the sliding plate 6. As the pressing plate 18 moves along with the moving bar 4, it gradually moves against the surface of the rotating shaft 17. The L-shaped rotating shaft 17 then rotates relative to the extension rod 7, deforming the second torsion spring 16. The support block 15 changes from a vertical to an inclined state. Since one end of each return spring (not shown) is fixedly connected to the sliding rod 13 and the other end is fixedly connected to the extension rod 7, the sliding rod 13 slides relative to the extension rod 7 under the elastic force of the return spring. After the locking block 8 moves, it disengages from the locking slot, allowing the moving bar 4 and the extension rod 7 to be pushed simultaneously. During the relative sliding process between the extension rod 7 and the support 3, since one end of the inelastic pull rope 9 is fixedly connected to the extension rod 7 and the other end is wrapped around the rotating block 11 and cannot be detached from the rotating block 11, the rotating block 11 will rotate relative to the base 2 under the transmission action of the pull rope 9. Since one end of the first torsion spring 12 is fixedly connected to the base 2 and the other end is fixedly connected to the rotating block 11, the first torsion spring 12 deforms, and the handwheel body 10 will rotate relative to the base 2 at the same time. After the sealing plate (not shown) rotates, there will be a gap between it and the inner wall of the gate valve body 1. At this time, the valve opens, and similarly, the valve can also be closed. When the distance between the operable position and the handwheel body 10 is far, the operator can easily adjust the angle of the sealing plate through the extension rod 7, which is convenient for quickly adjusting the opening or closing of the valve and is beneficial to the use of the gate valve.

Claims

1. A stop valve hand wheel lengthening device comprising a stop valve body (1), characterized in that, The cut-off valve body (1) is fixedly installed with a base (2), the base (2) is fixedly installed with a support (3), the base (2) is rotatably installed with a hand wheel body (10), the hand wheel body (10) is fixedly connected with a sealing plate at the lower end, the hand wheel body (10) is fixedly connected with a rotating block (11) which is arranged in T-shaped cross section, the rotating block (11) is connected with the base (2) through a first torsion spring (12); the support (3) is provided with a limiting opening, the limiting opening is slidably installed with an extension rod (7), the extension rod (7) is connected with the rotating block (11) through a pull rope (9), the extension rod (7) is provided with a limiting assembly, the limiting assembly comprises a sliding plate (6) slidably installed on the extension rod (7), a plurality of clamping blocks (8) are fixedly connected on the sliding plate (6), a clamping groove is formed in the upper inner wall of the limiting opening, the extension rod (7) is provided with a rotating assembly and a sliding assembly.

2. A handwheel extension for a globe valve as defined in claim 1, wherein The rotating assembly comprises a rotating shaft (17) rotatably installed in the extension rod (7), the rotating shaft (17) is fixedly connected with a supporting block (15), the rotating shaft (17) is sleeved with a second torsion spring (16), one end of the second torsion spring (16) is fixedly connected with the rotating shaft (17), the other end of the second torsion spring (16) is fixedly connected with the inner wall of the extension rod (7), the surface of the supporting block (15) is attached to the lower surface of the sliding plate (6).

3. A gate valve handwheel extension as defined in claim 2 wherein, The sliding assembly comprises a moving strip (4) slidably installed on the extension rod (7), the moving strip (4) is arranged in concave shape in cross section, the moving strip (4) is fixedly connected with a pressing plate (18), the rotating shaft (17) is arranged in L-shaped cross section, the inner wall of one side of the extension rod (7) is fixedly connected with a first spring (14), the first spring (14) is fixedly connected with the moving strip (4), one end of the extension rod (7) is fixedly connected with a work-shaped frame, the work-shaped frame is rotatably connected with a rotating rod (5), the surface of the rotating rod (5) is attached to the surface of the moving strip (4).

4. A handwheel extension for a globe valve as defined in claim 1, wherein, The extension rod (7) is provided with two slide rods (13) through two reset springs, each slide rod (13) is fixedly connected with the lower surface of the sliding plate (6).

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