CN220540432U

CN220540432U - Double-locking butterfly valve

Info

Publication number: CN220540432U
Application number: CN202322230131.6U
Authority: CN
Inventors: 戴华荣
Original assignee: Langao Valve Co ltd
Current assignee: Langao Valve Co ltd
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2024-02-27
Anticipated expiration: 2033-08-18

Abstract

The utility model discloses a double-locking butterfly valve, which is characterized by comprising a valve seat, a valve rod, a butterfly plate and a handle, wherein the valve rod is rotationally connected with the valve seat, the butterfly plate is fixed on the valve rod, the handle is fixed at the upper end of the valve rod, the upper end of the valve seat is provided with a locking disc, the handle is hinged with a linkage rod, the hinged part is provided with a torsion spring, the locking disc is provided with a plurality of locking grooves, and the linkage rod is provided with a locking part matched with the locking grooves; the lower extreme of disk seat is equipped with the holding chamber, and the holding intracavity is equipped with gliding locking sleeve, is equipped with the internal spline in the locking sleeve, and the valve rod lower extreme stretches into the holding intracavity and be equipped with at the tip with internal spline matched with external spline, be equipped with slidable depression bar in the valve rod, the upper end of valve rod is equipped with the notch, and the one end butt of depression bar is on the locking sleeve, and the other end extends to the notch, is equipped with the pushing part on the gangbar, and the pushing part stretches into in the notch and cooperatees with the depression bar. The utility model can lock the two ends of the valve rod, ensure the stress balance of the valve rod and effectively prolong the service life.

Description

Double-locking butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a double-locking butterfly valve.

Background

The butterfly valve is also called as a flap valve, and is a valve which has a simple structure and can be used for controlling the opening and closing of pipeline media, and the butterfly valve is a valve in which a closing member (a valve clack or a butterfly plate) is a disc and rotates around a valve shaft to achieve opening and closing. Butterfly valves may be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. The pipe is mainly used for cutting and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve opening and closing piece in the valve body, so that the purpose of opening and closing or adjusting is achieved. Generally, a butterfly valve can only be adjusted between opening and closing, and cannot be locked to adjust the flow rate at a required angle, and thus, the use of the butterfly valve is limited, and for this reason, chinese patent No. CN210687018U discloses a butterfly valve with limit locking, in which a locking mechanism is provided at one end of a valve rod, and the butterfly valve can be locked at a certain fixed angle after being opened by the locking mechanism.

However, the prior art has some defects that the two ends of the valve rod are in an unbalanced stress state for a long time because the locking mechanism is arranged at one end of the valve rod, and the valve rod is easy to twist and deform for a long time, so that the service life of the whole butterfly valve is shortened.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a double-locking butterfly valve which can lock both ends of a valve rod, ensure the stress balance of the valve rod and effectively prolong the service life.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a double-locking butterfly valve, includes disk seat, valve rod, butterfly plate and handle, the valve rod runs through the disk seat and rotates with the disk seat to be connected, the butterfly plate is fixed to be set up on the valve rod, the handle is fixed to be set up in valve rod upper end, its characterized in that:

the upper end of the valve seat is provided with a locking disc, the handle is hinged with a linkage rod, the hinge part is provided with a torsion spring, the periphery of the locking disc is provided with a plurality of locking grooves, the linkage rod is provided with a locking part, and the locking part is matched with the locking grooves; the lower extreme of disk seat is equipped with the holding chamber, the holding intracavity is equipped with scalable gliding locking sleeve, be equipped with the internal spline in the locking sleeve, the valve rod lower extreme stretches into the holding intracavity and is equipped with the external spline at the tip, the external spline cooperatees with the internal spline, be equipped with slidable depression bar in the valve rod, the upper end of valve rod is equipped with the notch, the one end butt of depression bar is on the locking sleeve, and the other end extends to the notch, be equipped with the pushing part on the gangbar, the pushing part stretches into in the notch and cooperatees with the depression bar.

The utility model is further provided with: the side wall of the accommodating cavity is provided with a sliding groove, the side wall of the locking sleeve is provided with a protruding part, and the protruding part is embedded into the sliding groove and can slide in the sliding groove.

The utility model is further provided with: the bottom of the accommodating cavity is provided with a telescopic spring, and the telescopic spring is arranged between the locking sleeve and the accommodating cavity in an abutting mode.

The utility model is further provided with: one end of the pressing part matched with the pressing rod is arranged into an arc-shaped structure.

The utility model is further provided with: the locking plate is provided with a limiting piece, and the limiting piece is used for limiting the rotation angle of the handle.

The utility model is further provided with: the valve seat is internally provided with a medium channel, the butterfly plate is positioned in the medium channel, and the butterfly plate is used for opening or closing the medium channel.

In summary, the utility model has the following beneficial effects:

compared with the prior art, the locking disc and the locking sleeve are arranged, wherein the locking disc is matched with the handle and the linkage rod, the upper end of the valve rod can be locked, the locking sleeve is matched with the linkage rod, the compression rod and the accommodating cavity, the lower end of the valve rod can be locked, therefore, the upper end and the lower end of the valve rod can be locked, the stress at the two ends of the valve rod after locking is balanced, and compared with the locking at one end of the prior art, the valve rod is not easy to generate torsional deformation after being used for a long time due to the locking stress at the two ends, and the service life of the butterfly valve is effectively prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic diagram showing the overall internal structure of the present embodiment;

FIG. 3 is a schematic view showing the internal structure of the handle when the present embodiment is locked;

FIG. 4 is a schematic view showing the internal structure of the housing cavity when the present embodiment is locked;

FIG. 5 is a schematic view showing the internal structure of the handle when the present embodiment is unlocked;

fig. 6 is a schematic view of the internal structure of the accommodating cavity when the present embodiment is unlocked.

Reference numerals: 1. a valve seat; 2. a valve stem; 3. a butterfly plate; 4. a handle; 5. a locking plate; 501. a locking groove; 6. a linkage rod; 601. a locking part; 602. a pressing part; 7. a receiving chamber; 701. a chute; 702. a telescopic spring; 8. a locking sleeve; 801. a boss; 9. an external spline; 10. an internal spline; 11. a compression bar; 12. a notch; 13. a limiting piece; 14. a media channel.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a double-locking butterfly valve, as shown in fig. 1-6, including disk seat 1, valve rod 2, butterfly plate 3 and handle 4, valve rod 2 runs through disk seat 1 and rotates with disk seat 1 to be connected, and butterfly plate 3 is fixed to be set up on valve rod 2, and handle 4 is fixed to be set up in valve rod 2 upper end, can drive the rotation of valve rod 2 through the rotation of handle 4 from this to drive butterfly plate 3 rotates, realizes opening or closing the butterfly valve.

Further, referring to fig. 1-3, a locking disc 5 is provided at the upper end of the valve seat 1 in this embodiment, a linkage rod 6 is hinged on the handle 4, a torsion spring (not shown in the figure) is provided at the hinge, a plurality of locking grooves 501 are provided at the periphery of the locking disc 5, a locking part 601 is provided on the linkage rod 6, and the locking part 601 is matched with the locking grooves 501; through the above structure, the torsion spring is used for keeping the linkage rod 6 at the locking position, when the locking part 601 is clamped with the locking groove 501, the locking disc 5 and the linkage rod 6 are fixed, and the linkage rod 6 is connected with the handle 4, so that the handle 4 cannot rotate along the axis of the valve rod, and the handle 4 is fixedly connected with the upper end of the valve rod 2, therefore, the upper end of the valve rod 2 is locked and cannot rotate.

Further, the lower extreme of disk seat 1 is equipped with holding chamber 7, is equipped with scalable gliding locking sleeve 8 in the holding chamber 7, is equipped with internal spline 10 in the locking sleeve 8, and valve rod 2 lower extreme stretches into in the holding chamber 7 and is equipped with external spline 9 at the tip, and external spline 9 cooperatees with internal spline 10, is equipped with slidable depression bar 11 in the valve rod 2, and the upper end of valve rod 2 is equipped with notch 12, and the one end butt of depression bar 11 is on locking sleeve 8, and the other end extends to notch 12, is equipped with pushing part 602 on the gangbar 6, and pushing part 602 stretches into in notch 12 and cooperatees with depression bar 11. A chute 701 is arranged on the side wall of the accommodating cavity 7, a protruding part 801 is arranged on the side wall of the locking sleeve 8, and the protruding part 801 is embedded into the chute 701 and can slide in the chute 701; the bottom of the accommodating cavity 7 is provided with a telescopic spring 702, and the telescopic spring 702 is arranged between the locking sleeve 8 and the accommodating cavity 7 in an abutting mode. Through the above structure, referring to fig. 4, in the locked state, the compression bar 11 is not pressed down, so the locking sleeve 8 is moved upwards under the action of the expansion spring 702, so that the locking sleeve 8 is matched with the lower end of the valve rod 2, specifically, the locking sleeve 8 is internally provided with the internal spline 10, the lower end of the valve rod 2 is provided with the external spline 9, the locking sleeve and the valve rod 2 are circumferentially fixed through spline matching, and the locking sleeve 8 is circumferentially fixed with the chute 701 in the accommodating cavity 7 through the protruding part 801, so that the lower end of the valve rod is also locked and cannot rotate.

Therefore, through the structure of the embodiment, both ends of the valve rod can be locked, and the stress at both ends of the valve rod is balanced, so that compared with the single-end locking in the prior art, the valve rod is not easy to generate torsional deformation after being used for a long time, and the service life of the butterfly valve is effectively prolonged.

Further, when the present embodiment needs to be unlocked, referring to fig. 5, an operator holds the linkage rod 6 and the handle 4 and drives the linkage rod 6 to rotate, and the locking portion 601 is disengaged from the locking groove 501 in the process, and at this time, the upper end of the valve rod is unlocked; the pressing part 602 rotates synchronously to press downwards to drive the pressing rod 11 to move downwards, and referring to fig. 6, after the pressing rod 11 presses downwards, the locking sleeve 8 is driven to slide downwards along the sliding groove 701, so that the external spline 9 at the lower end of the valve rod 2 is separated from the internal spline 10 in the locking sleeve 8, and at the moment, the locking sleeve 8 does not lock the lower end of the valve rod 2 any more. Therefore, when in use, an operator can release the locking of the two ends of the valve rod 2 by only controlling the action of the linkage rod 6, and then the rotation angle of the valve rod 2 is controlled by the handle 4. After the locking sleeve is loosened, the linkage rod 6 automatically resets under the action of a torsion spring, the locking part 601 is clamped with the locking groove 501 at the angle, the upper end of the valve rod is fixed again, the locking sleeve 8 resets under the action of the telescopic spring 702, the internal spline 10 and the external spline 9 are matched again, the lower end of the valve rod is fixed, and preferably, in order to ensure that the internal spline 10 of the locking sleeve and the external spline 9 of the valve rod can be matched smoothly, the matching positions of the internal spline 10 and the external spline 9 are corresponding to the matching positions of the locking disc 5 and the locking part 601, so that after the locking disc 5 and the locking part 601 are matched, the internal spline 10 and the external spline 9 can be matched with each other just, and the upper end and the lower end of the valve rod 2 can be locked together after the rotation angle is ensured.

Further, in this embodiment, the end of the pressing portion 602 that is matched with the pressing rod 11 is configured as an arc structure, and the cross section of the end that contacts the pressing rod 11 is preferably arc, so that the operator operates more smoothly when controlling the linkage rod 6 to rotate and press the pressing rod 11.

Further, the locking plate 5 is provided with a limiting piece 13, and the limiting piece 13 is used for limiting the rotation angle of the handle 4. Two limiting sheets 13 are preferably arranged, and the two limiting sheets 13 are respectively positioned when the handle completely opens the butterfly plate and completely closes the butterfly plate. With the above structure, the stopper piece 13 can prevent excessive rotation of the handle 4.

Further, a medium channel 14 is arranged in the valve seat 1, the butterfly plate 3 is positioned in the medium channel 14, and the butterfly plate 3 is used for opening or closing the medium channel 14. The butterfly plate 3 rotates in the medium channel 14 through the valve rod 2, so that the function of opening or closing the medium channel 14 is realized.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a double-locking butterfly valve, includes disk seat (1), valve rod (2), butterfly plate (3) and handle (4), valve rod (2) run through disk seat (1) and rotate with disk seat (1) and be connected, butterfly plate (3) are fixed to be set up on valve rod (2), handle (4) are fixed to be set up in valve rod (2) upper end, its characterized in that:

the upper end of the valve seat (1) is provided with a locking disc (5), a linkage rod (6) is hinged on the handle (4), a torsion spring is arranged at the hinged position, a plurality of locking grooves (501) are formed in the periphery of the locking disc (5), a locking part (601) is arranged on the linkage rod (6), and the locking part (601) is matched with the locking grooves (501); the lower extreme of disk seat (1) is equipped with holding chamber (7), be equipped with scalable gliding locking sleeve (8) in holding chamber (7), be equipped with internal spline (10) in locking sleeve (8), valve rod (2) lower extreme stretches into in holding chamber (7) and is equipped with external spline (9) at the tip, external spline (9) cooperate with internal spline (10), be equipped with slidable depression bar (11) in valve rod (2), the upper end of valve rod (2) is equipped with notch (12), the one end butt of depression bar (11) is on locking sleeve (8), and the other end extends to notch (12), be equipped with pushing part (602) on gangbar (6), pushing part (602) stretch into notch (12) and cooperate with depression bar (11).

2. A double-locking butterfly valve according to claim 1, wherein: the side wall of the accommodating cavity (7) is provided with a sliding groove (701), the side wall of the locking sleeve (8) is provided with a protruding part (801), and the protruding part (801) is embedded into the sliding groove (701) and can slide in the sliding groove (701).

3. A double-locking butterfly valve according to claim 1, wherein: the bottom of the accommodating cavity (7) is provided with a telescopic spring (702), and the telescopic spring (702) is arranged between the locking sleeve (8) and the accommodating cavity (7) in an abutting mode.

4. A double-locking butterfly valve according to claim 1, wherein: one end of the pressing part (602) matched with the pressing rod (11) is of an arc-shaped structure.

5. A double-locking butterfly valve according to claim 1, wherein: the locking disc (5) is provided with a limiting piece (13), and the limiting piece (13) is used for limiting the rotation angle of the handle (4).

6. A double-locking butterfly valve according to claim 1, wherein: a medium channel (14) is arranged in the valve seat (1), the butterfly plate (3) is positioned in the medium channel (14), and the butterfly plate (3) is used for opening or closing the medium channel (14).