CN216045497U

CN216045497U - Butterfly valve

Info

Publication number: CN216045497U
Application number: CN202122473094.2U
Authority: CN
Inventors: 张锦锋; 曹云贺; 薛曼曼; 代爱凤
Original assignee: Sdb Pump Valve Suzhou Co ltd
Current assignee: Sdb Pump Valve Suzhou Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-15
Anticipated expiration: 2031-10-14

Abstract

The utility model discloses a butterfly valve, which comprises a valve body, a valve rod which can be rotatably arranged on the valve body around the axis of the valve rod, a valve plate fixedly arranged on the valve rod, a passage for liquid to flow through, and a handle for driving the valve plate to rotate relative to the valve body, wherein the valve plate can be rotatably arranged in the passage and can open and close the passage. The butterfly valve locks the position of the valve plate through the locking mechanism, and the locking mechanism is simple in structure and convenient to lock and unlock.

Description

Butterfly valve

Technical Field

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

Background

The butterfly valve is a valve which uses a disc type valve plate to rotate back and forth by about 90 degrees to open, close or adjust the medium flow, and the manual butterfly valve has the advantages of simple structure, small volume, light weight, material consumption saving, small installation size, small driving moment, simple and rapid operation, good flow adjusting function and closing sealing property. The manual butterfly valve generally drives the valve plate to rotate back and forth through rotating the handle, drives the valve plate through rotating the handle and rotates the back of adjusting the aperture, because the effect of external force, perhaps the effort of inside fluid, perhaps artificial maloperation or touching, the aperture of valve all will change to lead to the skew of system operating mode condition.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a butterfly valve that locks the position of a handle by a locking mechanism, thereby holding a valve plate in place, and that has a simple structure and is convenient to lock and unlock.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a butterfly valve comprises a valve body, a valve rod and a valve plate, wherein the valve rod can be rotationally arranged on the valve body around the axis of the valve rod, the valve plate is fixedly arranged on the valve rod, the valve body is provided with a channel for liquid circulation, the valve plate can be rotationally arranged in the channel and can be opened and closed, the butterfly valve further comprises a handle used for driving the valve plate to rotate relative to the valve body, the handle is fixedly connected with the valve rod, the butterfly valve further comprises a locking mechanism used for locking the position of the handle, the locking mechanism comprises a self-locking rod rotationally connected with the handle, the self-locking rod can rotate relative to the handle and match or separate from the valve body, when the locking mechanism is in a locking state, the self-locking rod is matched with the valve body to enable the handle not to rotate relative to the valve body, when the locking mechanism is in an unlocking state, the self-locking rod is disengaged from the valve body.

Preferably, a plurality of tooth sockets are arranged on the valve body along the circumferential direction of rotation of the handle, a tooth block matched with the tooth sockets is arranged on the self-locking rod, when the locking mechanism is in a locking state, the tooth block is meshed with one tooth socket, and when the locking mechanism is in an unlocking state, the tooth block is disengaged from the tooth sockets. The tooth block is meshed with different tooth grooves, so that the channel of the butterfly valve can be kept in different opening states and closed states.

Preferably, the self-locking rod is rotatably connected with the handle through a rotating shaft, and the extending direction of the shaft axis of the rotating shaft is perpendicular to the extending direction of the shaft axis of the valve rod.

Furthermore, an operating part used for manual operation during unlocking is arranged on the self-locking rod, and the operating part and the tooth blocks are respectively positioned on two opposite sides of the rotating shaft.

Preferably, the locking mechanism further includes an elastic member for returning the locking mechanism from the unlocked state to the locked state, and both ends of the elastic member are respectively provided on the handle and the self-locking lever.

Preferably, the self-locking rod is located below the handle, an operation portion used for operation during unlocking is arranged on the self-locking rod, and the operation portion is located below one end portion, far away from the valve rod, of the handle.

Further, when the locking mechanism is unlocked, the self-locking rod rotates relative to the handle to enable the operating part to be close to the handle. Thus, the operation of the human hand is convenient.

Preferably, one side of the handle facing the self-locking rod is provided with a containing groove, and the self-locking rod can be partially contained in the containing groove.

Preferably, still be provided with on the valve body and be used for right the rotation of handle carries out spacing limit structure, limit structure is including fixed setting up first locating part and second locating part on the valve body, the handle is located first locating part with between the second locating part, the handle is relative the valve body rotates can respectively with first locating part with the second locating part offsets and establishes.

Further, when the passageway of butterfly valve is in the enclosed state, the handle with first locating part offsets, when the passageway of butterfly valve is opened to maximum condition, the handle with second locating part offsets and establishes.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the handle of the butterfly valve is fixedly connected with the valve plate through the valve rod, and the handle can rotate relative to the valve body, so that the position of the valve plate can be adjusted, the butterfly valve is in an open or closed state, and the flow can be adjusted in the open state. The butterfly valve locks the position of the handle by a locking mechanism, thereby holding the valve plate in place. The locking mechanism has a simple structure, when in locking, only the self-locking rod is matched with the valve body, and after the self-locking rod is separated from the valve body, the locking mechanism is unlocked, and the locking and unlocking operations of the locking mechanism are very convenient.

Drawings

FIG. 1 is a schematic cross-sectional view of a butterfly valve according to the present embodiment (with the locking mechanism in a locked state);

FIG. 2 is a schematic cross-sectional view of the butterfly valve of the present embodiment (with the locking mechanism in an unlocked state);

FIG. 3 is a schematic perspective view of the butterfly valve of the present embodiment;

fig. 4 is a schematic top view of the butterfly valve of the present embodiment.

Wherein: 1. a valve body; 11. a tooth socket; 2. a valve stem; 3. a valve plate; 4. a handle; 5. a self-locking lever; 51. a tooth block; 52. an operation section; 6. a rotating shaft; 7. an elastic member; 81. a first limit piece; 82. a second limiting member.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings.

As shown in fig. 1 to 4, the butterfly valve of the present invention includes a valve body 1, a valve stem 2, and a valve plate 3.

The valve body 1 is provided with a channel for liquid circulation, the valve rod 2 can be rotationally arranged on the valve body 1 around the self axial lead, the valve plate 3 is fixedly arranged on the valve rod 2, the valve plate 3 is positioned in the channel of the valve body 1, and the valve rod 2 can drive the valve plate 3 to synchronously rotate when rotating around the self axial lead relative to the valve body 1, so that the channel of the valve body 1 is opened and closed. And when the valve plate 3 enables the channel of the valve body 1 to be in an open state, the position of the valve plate 3 can be adjusted so as to adjust the opening degree of the channel and further adjust the flow.

The butterfly valve also comprises a handle 4, and the handle 4 is fixedly connected with the end part of the valve rod 2. When the handle 4 is driven to rotate relative to the valve body 1, the valve rod 2 can drive the valve plate 3 to rotate relative to the valve body 1, so that the channel of the valve body 1 is opened, closed or the medium flow is adjusted.

The butterfly valve further comprises a locking mechanism for locking the position of the handle 4, the locking mechanism having a locked and an unlocked state. When the locking mechanism is in a locking state, the position of the handle 4 is fixed and cannot rotate relative to the valve body 1, and the channel of the valve body 1 is kept in an open or closed state. When the locking mechanism is in the unlocked state, the handle 4 can be rotated relative to the valve body 1, thereby adjusting the state of the passage of the valve body 1.

The locking mechanism comprises a self-locking rod 5, the self-locking rod 5 is rotatably connected with the handle 4 through a rotating shaft 6, and the extending direction of the shaft axis of the rotating shaft 6 is vertical to the extending direction of the shaft axis of the valve rod 1.

The self-locking lever 5 can be rotated relative to the handle 4 to engage or disengage the valve body 1. When the locking mechanism is in a locking state, the self-locking rod 5 is matched with the valve body 1, so that the handle 4 cannot rotate relative to the valve body 1. When the locking mechanism is in an unlocking state, the self-locking rod 5 is disengaged from the valve body 1, and the handle 4 can rotate relative to the valve body 1.

In this embodiment, the valve body 1 is provided with a plurality of tooth sockets 11, the plurality of tooth sockets 11 are uniformly distributed along the circumferential direction of the rotation of the handle 4, and the self-locking lever 5 is provided with a tooth block 51 matched with the tooth sockets 11. When the locking mechanism is in the locked state, the tooth block 51 engages with one of the tooth grooves 11. When the locking mechanism is in the unlocked state, the engagement of the tooth block 51 with each tooth groove 11 is released.

The self-locking lever 5 is further provided with an operating part 52 for manual operation during unlocking, and the operating part 52 and the gear block 51 are respectively positioned on two opposite sides of the rotating shaft 6 and at two opposite ends of the self-locking lever 5. Thus, the self-locking lever 5 forms a lever mechanism.

In this embodiment, the self-locking lever 5 is located below the handle 4, and the operating portion 52 is located below one end portion of the handle 4 away from the valve stem 2, and when the lock mechanism is unlocked, the operating portion 52 moves upward to be close to the handle 4. Thus, the force is conveniently applied by hands.

The handle 4 is provided with a containing groove on one side facing the self-locking rod 5, and the self-locking rod 5 can be partially contained in the containing groove. Therefore, the butterfly valve is compact in structure and neat and attractive in appearance.

The locking mechanism further comprises an elastic member 7, the elastic force of the elastic member 7 is used for resetting the locking mechanism from the unlocking state to the locking state, and two end parts of the elastic member 7 are respectively arranged on the handle 4 and the self-locking lever 5.

In this embodiment, the elastic member 7 is a compression spring which is provided between the operation portion 52 and the rotary shaft 6 on the self-locking lever 5.

The valve body 1 is also provided with a limiting structure for limiting the rotation of the handle 4. Specifically, the limiting structure includes a first limiting member 81 and a second limiting member 82 fixedly disposed on the valve body 1, the first limiting member 81 and the second limiting member 82 are both located on a rotation path of the handle 4 rotating relative to the valve body 1, the handle 4 is located between the first limiting member 81 and the second limiting member 82, and the handle 4 can abut against the first limiting member 81 or the second limiting member 82 when rotating relative to the valve body 1.

When the channel of the butterfly valve is in a closed state, the handle 4 abuts against the first limiting member 81. When the channel of the butterfly valve is opened to the maximum state, the handle 4 abuts against the second limiting member 82.

The working principle of the butterfly valve is as follows:

when the channel of the butterfly valve is in a closed state, the locking mechanism is in a locked state, the tooth block 51 on the self-locking lever 5 is meshed with the tooth groove 11 on the valve body 1, the operating part 52 on the self-locking lever 5 is far away from the handle 4, and the handle 4 is abutted against the first limiting part 81, as shown in fig. 1, 3 and 4.

When the passageway of butterfly valve need be opened, make locking mechanical system unblock earlier, specifically the operation is: the operating part 52 of the self-locking lever 5 is pressed upwards to rotate the self-locking lever 5 relative to the handle 4 around the rotating shaft 6, so that the operating part 52 moves upwards to gradually approach the handle 4, the toothed block 51 moves downwards to gradually disengage from the toothed slot 11 until the toothed block 51 is completely disengaged from the toothed slot 11, and the locking mechanism is unlocked, as shown in fig. 2. After the locking mechanism is unlocked, the handle 4 is rotated relative to the valve body 1, and due to the blocking of the first limiting member 81, the handle 4 can only rotate in the direction close to the second limiting member 82. When the handle 4 rotates, the valve rod 2 drives the valve plate 3 to synchronously rotate relative to the valve body 1, so that the channel of the valve body 1 is opened.

During unlocking of the locking mechanism, the elastic member 7 is compressed. When the channel of the valve body 1 is opened to a required position, the self-locking lever 5 is released, the self-locking lever 5 reversely rotates around the rotating shaft 6 relative to the handle 4 under the action of the elastic force of the elastic piece 7, the operating part 52 moves downwards to gradually get away from the handle 4, the toothed block 51 moves upwards to gradually mesh with the toothed groove 11 until the toothed block 51 is completely meshed with the toothed groove 11, the locking mechanism is in a locking state again, and the channel of the butterfly valve is kept in a current opening state.

When the opening degree of the butterfly valve channel needs to be adjusted, the locking mechanism is unlocked firstly, the locking mechanism is unlocked in the same way, after the locking mechanism is unlocked, the handle 4 can rotate relative to the valve body 1 in the direction close to the first limiting part 81 and can also rotate in the direction close to the second limiting part 82, when the handle 4 rotates to abut against the second limiting part 82, the butterfly valve channel is opened to the maximum state, the handle 4 cannot rotate continuously in the current direction, and only can rotate reversely. When the opening degree of the butterfly valve passage is adjusted to a proper position, the operation portion 52 is released to lock the lock mechanism again.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.

Claims

1. A butterfly valve comprising a valve body, a valve stem rotatably disposed on said valve body about its axis, and a valve plate fixedly disposed on said valve stem, said valve body having a passage for the passage of a fluid, said valve plate rotatably disposed in said passage and capable of opening and closing said passage, characterized in that: the butterfly valve is still including being used for ordering about the valve plate is relative valve body pivoted handle, the handle with valve rod fixed connection, the butterfly valve still including be used for with the locking mechanical system of the position locking of handle, locking mechanical system include with the handle rotates the self-locking lever of connecting, the self-locking lever can be relative the handle rotate with the valve body cooperation or break away from the cooperation, work as when locking mechanical system is in the lock state, the self-locking lever with the valve body cooperatees and makes the handle can not be relative the valve body rotates, works as when locking mechanical system is in the unlock state, the self-locking lever with cooperation between the valve body is broken away.

2. The butterfly valve of claim 1, wherein: the valve body is provided with a plurality of tooth grooves along the circumferential direction of the rotation of the handle, the self-locking rod is provided with tooth blocks matched with the tooth grooves, when the locking mechanism is in a locking state, the tooth blocks are meshed with the tooth grooves, and when the locking mechanism is in an unlocking state, the tooth blocks are disengaged from the tooth grooves.

3. The butterfly valve of claim 2, wherein: the self-locking rod is rotatably connected with the handle through a rotating shaft, and the extending direction of the shaft axis of the rotating shaft is perpendicular to the extending direction of the shaft axis of the valve rod.

4. The butterfly valve of claim 3, wherein: the automatic locking rod is provided with an operation part used for manual operation during unlocking, and the operation part and the tooth block are respectively positioned on two opposite sides of the rotating shaft.

5. The butterfly valve of claim 1, wherein: the locking mechanism further comprises an elastic piece for enabling the locking mechanism to reset from an unlocking state to a locking state, and two end parts of the elastic piece are respectively arranged on the handle and the self-locking rod.

6. The butterfly valve of claim 1, wherein: the self-locking rod is positioned below the handle, an operation part used for operation during unlocking is arranged on the self-locking rod, and the operation part is positioned below one end part of the handle, which is far away from the valve rod.

7. The butterfly valve of claim 6, wherein: when the locking mechanism is unlocked, the self-locking rod rotates relative to the handle to enable the operating part to be close to the handle.

8. The butterfly valve of claim 1, wherein: the handle is provided with a containing groove towards one side of the self-locking rod, and the self-locking rod can be partially contained in the containing groove.

9. The butterfly valve of claim 1, wherein: the valve body is further provided with a limiting structure for limiting the rotation of the handle, the limiting structure comprises a first limiting part and a second limiting part which are fixedly arranged on the valve body, the handle is located between the first limiting part and the second limiting part, and the handle is opposite to the valve body and can rotate to abut against the first limiting part and the second limiting part respectively.

10. The butterfly valve of claim 9, wherein: when the passageway of butterfly valve is in the encapsulated situation, the handle with first locating part offsets, when the passageway of butterfly valve is opened to maximum condition, the handle with second locating part offsets and establishes.