CN218031466U

CN218031466U - Butterfly valve with butterfly plate locking function

Info

Publication number: CN218031466U
Application number: CN202222292083.9U
Authority: CN
Inventors: 李春雨; 袁林枫; 张玉环; 兑煜; 李怀哲
Original assignee: Henan Zhengdie Fluid Equipment Co ltd
Current assignee: Henan Zhengdie Fluid Equipment Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-13
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a butterfly valve with a butterfly plate locking function, which comprises a valve body and a butterfly plate, wherein the butterfly plate is rotatably arranged inside the valve body through a valve rod; the valve body is provided with a plurality of groups of locking mechanisms in an annular array along the axis of the valve body; the locking mechanism comprises a locking pin which penetrates through the side wall of the valve body and can slide along the radial direction of the valve body, and a driving mechanism which drives the locking pin to slide; when the butterfly plate is in the state of closing entirely, inside the stop pin can stretch into the valve body, and supported the butterfly plate from the butterfly plate back, prevented that the butterfly plate from rotating and opening, this take butterfly plate locking's butterfly valve is through increasing locking mechanical system, makes the butterfly plate possess self-locking ability when being in the closure state, when maintaining the executor, need not to empty inside medium, can change the operation, reduces the influence of maintenance to the production progress.

Description

Butterfly valve with butterfly plate locking function

Technical Field

The utility model relates to a valve equipment technical field specifically is a take butterfly valve of butterfly plate locking.

Background

The butterfly valve is a common device in a fluid system, and the opening and closing of the butterfly valve influences the fluid flow of the whole fluid system; the on-off of the inner part of the butterfly valve is mainly influenced by the rotating position of the butterfly plate, the butterfly plate is impacted by an internal medium, has a certain rotating trend, needs to be locked by an actuator connected with a valve rod, and avoids the butterfly plate from rotating under the impact of fluid, and the butterfly plate does not have self-locking capacity, so that the medium in a pipeline where the butterfly valve is located needs to be emptied when the butterfly valve is maintained, and the butterfly valve is maintained when the medium does not exist; if the external actuator goes wrong, when needing to be changed, just need empty the medium in the pipeline, avoid the butterfly plate to receive the impact to take place independently to rotate, cause maintenance work to waste time and energy, influence the production progress.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a take butterfly valve of butterfly plate locking, through increasing locking mechanical system, make the butterfly plate when being in the closed condition, possess oneself locking ability, when maintaining the executor, need not to empty inside medium, can change the operation, reduce the influence of maintenance to the production progress, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a butterfly valve with a butterfly plate lock comprises a valve body and a butterfly plate, wherein the butterfly plate is rotatably arranged in the valve body through a valve rod;

the valve body is provided with a plurality of groups of locking mechanisms in an annular array along the axis of the valve body;

the locking mechanism comprises a locking pin which penetrates through the side wall of the valve body and can slide along the radial direction of the valve body, and a driving mechanism which drives the locking pin to slide;

when the butterfly plate is in the state of closing entirely, the stop pin can stretch into inside the valve body, and supports the butterfly plate from the butterfly plate back, prevents that the butterfly plate from rotating to open.

As a preferred technical scheme of the utility model, the periphery of valve body is provided with the through hole, stop pin sliding seal installs in the through hole, actuating mechanism fixed mounting is outside at the valve body.

As a preferred technical scheme of the utility model, locking mechanical system still includes the installation sleeve, the coaxial fixed mounting of through hole of installation sleeve and valve body circumference wall department, and the end fixing is provided with the end cover, stop pin slidable mounting is in the installation sleeve, the lead screw is installed to stop pin tail end coaxial rotation, the lead screw runs through the end cover, and passes through threaded connection with the end cover.

As a preferred technical scheme of the utility model, locking mechanical system still includes the installation sleeve, the coaxial fixed mounting of through hole of installation sleeve and valve body circumference wall department, and the end fixing is provided with the end cover, stop pin slidable mounting is in the installation sleeve, the stop pin tail end has the lead screw through screw thread coaxial coupling, the lead screw runs through the end cover, and rotates the installation with the end cover.

As a preferred technical scheme of the utility model, the outer periphery of stop pin is provided with the spout along the axis, be provided with the spacer pin of slidable mounting in the spout in the installation sleeve.

As a preferred technical scheme of the utility model, a plurality of groups travel switch have been arranged along the axis direction in installation telescopic circumference lateral wall department, the circumferential surface of stop pin is provided with the identification module that can supply travel switch discernment.

Compared with the prior art, the beneficial effects of the utility model are that: the butterfly valve with the butterfly plate locking function is provided with the butterfly plate locking mechanism, after the butterfly plate is closed, the butterfly plate is fixed at the fully closed position by the locking pin of the locking mechanism, and even if the butterfly plate is impacted by an internal medium, the butterfly plate cannot rotate due to limitation of the locking mechanism, so that the butterfly plate still has a good sealing effect, the external actuator can be quickly replaced, and the medium in a pipeline does not need to be emptied;

the utility model discloses a locking mechanical system installs in the valve body outside, and when the butterfly plate was opened, the stop pin can be retrieved in the through hole of valve body, can not cause the influence to the flow path in the valve body, can not increase the flow resistance of butterfly valve.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is an enlarged view of the position A of the present invention;

FIG. 4 is a schematic view of the locking mechanism of the present invention;

FIG. 5 is a schematic view of a first locking mechanism according to the present invention;

fig. 6 is a schematic diagram illustrating a second locking mechanism of the present invention.

In the figure: 1. a valve body; 2. a butterfly plate; 3. a valve stem; 4. an actuator; 5. a locking mechanism; 501. a locking pin; 5011. an identification module; 5012. a chute; 502. installing a sleeve; 503. an end cap; 504. a lead screw; 505. a seal ring; 506. a travel switch; 507. and a limiting pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-4, the present invention provides a technical solution: a butterfly valve with a butterfly plate locking function comprises a valve body 1 and a butterfly plate 2, wherein the butterfly plate 2 is rotatably installed inside the valve body 1 through a valve rod 3;

the valve body 1 is provided with a plurality of groups of locking mechanisms 5 on the outer circumferential surface in an annular array along the axis of the valve body;

a locking mechanism 5 which comprises a locking pin 501 penetrating through the side wall of the valve body 1 and capable of sliding along the radial direction of the valve body 1, and a driving mechanism for driving the locking pin 501 to slide;

when the butterfly plate 2 is in the fully closed state, the locking pin 501 can extend into the valve body 1 and abut against the butterfly plate 2 from the back of the butterfly plate 2, so that the butterfly plate 2 is prevented from being opened by rotation.

The circumferential surface of the valve body 1 is provided with a through hole, the locking pin 501 is installed in the through hole in a sliding and sealing manner, and the driving mechanism is fixedly installed outside the valve body 1.

When carrying out the installation of butterfly plate 2, adopt eccentric mounting's mode, butterfly plate 2 is when rotatory switching, and except that when butterfly plate 2 is in complete sealing state, the sealed face of its surface contacts with the sealed face in the valve body 1, under all the other states, the sealed face of butterfly plate 2 and the sealed face in the valve body 1 can in time break away from, and wearing and tearing are less between the two, reduce the influence to sealed face seal degree.

Because the butterfly plate 2 is eccentrically installed in order to reduce the abrasion loss of the sealing surface, that is, the areas of the butterfly plates 2 on the two sides of the valve rod 3 are unequal, when the butterfly plate 2 is in a cut-off state, internal media impact occurs, the actual stress on the two sides of the butterfly plate 2 is unequal, and under some working conditions, backflow media exist in the pipeline and also impact the butterfly plate 2, so that the butterfly plate 2 tends to rotate, and the braking of the butterfly plate 2 mainly depends on the locking capability of the external actuator 4, when the external actuator 4 needs to be disassembled and overhauled, the locking capability is lost, that is, the cut-off capability of the butterfly plate 2 inside the surface is unreliable, and the locking mechanism 5 is adopted to internally abut against the back of the butterfly plate 2 to prevent the butterfly plate 2 from rotating in the cut-off state, even if the external actuator 4 is disassembled, the butterfly plate 2 still has force, and the butterfly plate 2 can be prevented from being rotated and opened due to the impact of the internal media to brake the butterfly plate 2, so that the cut-off capability can be ensured, and the media in the pipeline can not need to be emptied when the actuator 4 is maintained.

Referring to fig. 4 and 5, the locking mechanism 5 further includes a mounting sleeve 502, the mounting sleeve 502 is coaxially and fixedly mounted with a through hole at the circumferential wall of the valve body 1, and an end portion is fixedly provided with an end cover 503, the locking pin 501 is slidably mounted in the mounting sleeve 502, a lead screw 504 is coaxially and rotatably mounted at the tail end of the locking pin 501, the lead screw 504 penetrates through the end cover 503 and is connected with the end cover 503 through a thread;

the outer end of the lead screw 504 is additionally provided with a handle, the lead screw 504 is driven to rotate through the handle, when the lead screw 504 rotates, axial feeding can be achieved through the thread effect between the lead screw 504 and the end cover 503, so that the locking pin 501 is driven to axially slide, namely, slide along the radial direction of the valve body 1 and extend into or extend out of a through hole in the surface of the valve body 1, when the butterfly plate 2 is at a stop position, the locking pin 501 extends out of the through hole, the butterfly plate 2 can be supported from the back of the butterfly plate 2, and the rotation of the butterfly plate 2 is limited; after the butterfly valve is repaired, the butterfly plate 2 recovers its original brake capability, or in the repair process, the butterfly plate 2 needs to be rotated, and only the handle needs to be rotated in the reverse direction, that is, the lead screw 504 rotates in the reverse direction, so as to drive the locking pin 501 to slide in the reverse direction until the locking pin enters the through hole in the surface of the valve body 1, thereby the rotation of the butterfly plate 2 is not affected, the flow path in the valve body 1 is not affected, and the medium passing capability in the valve body 1 is not affected.

Several sets of travel switches 506 are arranged along the axial direction at the circumferential side wall of the mounting sleeve 502, and the circumferential surface of the locking pin 501 is provided with an identification module 5011 for identifying the travel switches 506.

By arranging the annular identification module 5011 on the circumferential surface of the locking pin 501, the identification module 5011 can be set according to the working principle of the travel switch 506, if a microswitch is selected as the travel switch 506, the identification module 5011 can select the annular groove arranged on the circumferential surface of the locking pin 501, and when the annular groove moves to the position of the travel switch 506, the annular groove can touch the contact of the microswitch, so that the microswitch sends an electric signal outwards to detect the position of the locking pin 501; it is preferable to provide the stroke switch 506 at a position where the locking pin 501 completely enters the through hole in the surface of the valve body 1 and can play a role of restraining the butterfly plate 2 in the valve body 1, thereby ensuring the accuracy of the final movement stop position of the locking pin 501.

The second embodiment:

referring to fig. 6, the locking mechanism 5 further includes a mounting sleeve 502, the mounting sleeve 502 is coaxially and fixedly mounted with a through hole in the circumferential wall of the valve body 1, and an end cover 503 is fixedly disposed at an end portion of the mounting sleeve 502, the locking pin 501 is slidably mounted in the mounting sleeve 502, a lead screw 504 is coaxially connected to the tail end of the locking pin 501 through a thread, and the lead screw 504 penetrates through the end cover 503 and is rotatably mounted with the end cover 503.

The outer circumferential surface of the locking pin 501 is provided with a sliding slot 5012 along the axis, and a limit pin 507 slidably mounted in the sliding slot 5012 is arranged in the mounting sleeve 502.

Different from the first embodiment, in the present embodiment, the screw 504 is coaxially connected with the locking pin 501 through a screw thread, and the screw 504 is rotatably connected with the end cover 503, that is, when the screw 504 rotates, the screw 504 and the end cover 503 do not axially move relatively, but axially move relatively with the locking pin 501, that is, the screw 504 can be driven to rotate by providing a motor.

Meanwhile, a limit pin 507 is added to limit the locking pin 501 to rotate along the axis of the locking pin.

Meanwhile, a sealing ring 505 for sealing is arranged on the circumference of the locking pin 501 and plays a role of a piston ring, so that the sealing performance between the locking pin 501 and the inner wall of the through hole of the valve body 1 is ensured, and the medium in the valve body 1 is prevented from leaking through the through hole.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take butterfly valve of butterfly plate locking, includes valve body (1) and butterfly plate (2), butterfly plate (2) are installed inside valve body (1) through valve rod (3) rotation, its characterized in that:

the valve body (1), the outer periphery is arranged with a plurality of groups of locking mechanisms (5) along the axis of the valve body in a ring array;

the locking mechanism (5) comprises a locking pin (501) which penetrates through the side wall of the valve body (1) and can slide along the radial direction of the valve body (1), and a driving mechanism which drives the locking pin (501) to slide;

when the butterfly plate (2) is in a fully closed state, the locking pin (501) can extend into the valve body (1) and abut against the butterfly plate (2) from the back of the butterfly plate (2) to prevent the butterfly plate (2) from being opened in a rotating mode.

2. The butterfly valve with butterfly plate locking of claim 1, wherein: the periphery of the valve body (1) is provided with a through hole, the locking pin (501) is installed in the through hole in a sliding and sealing mode, and the driving mechanism is fixedly installed outside the valve body (1).

3. The butterfly valve with butterfly plate locking of claim 2, wherein: locking mechanical system (5) still include installation sleeve (502), the coaxial fixed mounting of through-hole of installation sleeve (502) and valve body (1) circumference wall department, and the end fixing is provided with end cover (503), stop pin (501) slidable mounting is in installation sleeve (502), stop pin (501) tail end coaxial rotation installs lead screw (504), lead screw (504) run through end cover (503), and pass through threaded connection with end cover (503).

4. The butterfly valve with butterfly plate locking of claim 2, wherein: locking mechanical system (5) still include installation sleeve (502), the coaxial fixed mounting of through-hole of installation sleeve (502) and valve body (1) circumference wall department, and the end fixing is provided with end cover (503), stop pin (501) slidable mounting is in installation sleeve (502), stop pin (501) tail end has lead screw (504) through screw thread coaxial coupling, lead screw (504) run through end cover (503), and rotate the installation with end cover (503).

5. The butterfly valve with butterfly plate locking of claim 4, wherein: the outer circumferential surface of the locking pin (501) is provided with a sliding groove (5012) along the axis, and a limiting pin (507) which is slidably installed in the sliding groove (5012) is arranged in the installation sleeve (502).

6. The butterfly valve with disc lock of any of claims 3 to 5, wherein: the circumference lateral wall department of installation sleeve (502) has arranged a plurality of groups travel switch (506) along the axis direction, the circumferential surface of locking pin (501) is provided with the sign module (5011) that can supply travel switch (506) to discern.