CN111473154A

CN111473154A - Butterfly valve

Info

Publication number: CN111473154A
Application number: CN202010417324.0A
Authority: CN
Inventors: 武芳; 李辉; 洪德朋
Original assignee: 武芳
Current assignee: WENZHOU LONGZE LIGHT INDUSTRY MACHINERY CO.,LTD.
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-07-31
Anticipated expiration: 2040-05-18
Also published as: CN111473154B

Abstract

The invention discloses a butterfly valve, which comprises a valve body, wherein a channel is arranged in the valve body, the side surface of the valve body is rotatably connected with a valve rod, one end of the valve rod extends into the channel, a valve plate for controlling the on-off of the channel is fixedly arranged between the ends of the valve rod extending into the channel, the butterfly valve further comprises a locking mechanism, the locking mechanism comprises a locking block and a password component, the side surface of the valve body is provided with a convex column along the direction vertical to the valve rod, a sliding hole is arranged in the convex column along the axial direction of the convex column, a plug extending into the sliding hole is fixedly arranged at the opening of the sliding hole of the convex column, the locking block is connected in the sliding hole in a sliding manner, the locking block is provided with two locking rods extending into the channel along the axial direction of the sliding hole, the password component is used for controlling the axial movement of the locking block along the sliding hole, when the butterfly valve is in, the locking block drives the two locking rods to leave two sides of the valve plate; the butterfly valve is simple in structure and can play a role in preventing the butterfly valve from being opened in an anti-theft mode.

Description

Butterfly valve

Technical Field

The invention belongs to the technical field of pipeline valves, and particularly relates to a butterfly valve with an anti-theft function.

Background

The butterfly valve is suitable for pipelines for conveying various corrosive and non-corrosive fluid media in engineering systems such as petroleum, chemical engineering, hydroelectric engineering, water supply and drainage engineering, smelting engineering, energy engineering and the like, and can be used for regulating and cutting off the flow of the media. At present, butterfly valves produced in China generally adopt two modes of worm gear transmission and handle transmission, wherein middle and small caliber butterfly valves driven by handles are popularized in the market; however, butterfly valves in the market are all lacking in anti-theft function, and when the valves are installed in a pipeline system, the valves are easily opened manually, so that media in the pipeline cannot be protected from being stolen by people, a large amount of media are lost, and economic loss of a user unit is caused. Therefore, aiming at the defects and shortcomings of the existing butterfly valve, designing a butterfly valve with an anti-theft function is an urgent need in the current market.

Disclosure of Invention

The invention aims to provide a butterfly valve which is simple in structure and can play a role in preventing the butterfly valve from being opened in an anti-theft mode.

In order to achieve the purpose, the invention provides the following technical scheme:

a butterfly valve comprises a valve body, a channel is arranged in the valve body, a valve rod with one end extending into the channel is rotatably connected to the side surface of the valve body, a valve plate for controlling the on-off of the channel is fixedly arranged between one ends of the valve rods extending into the channel, and the valve plate also comprises a locking mechanism, the locking mechanism comprises a locking block and a password component, a convex column is arranged on the side surface of the valve body along the direction vertical to the valve rod, a sliding hole is arranged in the convex column along the axial direction of the convex column, a plug extending into the sliding hole is fixedly arranged at the opening of the sliding hole of the convex column, the locking block is connected in the sliding hole in a sliding way, the locking block is provided with two locking rods extending into the channel along the axial direction of the sliding hole, the password component is used for controlling the locking block to move along the axial direction of the sliding hole, when the locking state, the butterfly valve is closed and the locking piece drives the two locking rods to extend to the two sides of the valve plate respectively, and when the unlocking state is realized, the locking piece drives the two locking rods to leave the two sides of the valve plate.

Through the technical scheme, when the butterfly valve is locked, the valve plate is closed, the locking block drives the two locking rods to extend to two sides of the valve plate respectively, so that the valve plate is prevented from rotating, and when a correct password is input, the password component controls the locking block to drive the two locking rods to leave from two sides of the valve plate, so that the butterfly valve is opened by rotating the valve plate through the valve rod; the butterfly valve realizes the locking or unlocking of the valve plate by controlling the two lock rods to extend to or leave from the two sides of the valve plate, so that the anti-theft structure of the valve plate is more reliable.

Furthermore, the password assembly comprises a lock cylinder, a first spring and a second spring, a notch communicated with the sliding hole is formed in the side face of the convex cylinder, a sliding chute communicated with the notch is formed in the outer side face of the plug extending into the sliding hole, the lock cylinder is connected in the notch in a sliding mode along the radial direction of the sliding hole, a resetting convex head is arranged at one end, far away from the plug, of the lock cylinder along the radial direction of the sliding hole, a plurality of password discs are rotatably connected between the plug and the resetting convex head on the convex cylinder, the first spring is arranged between the lock block and the bottom of the sliding hole and used for forcing the lock block to move towards the plug, and the second spring is located in the sliding chute and used for forcing the lock cylinder to move towards the direction; the side wall of an inner hole of each password disk is provided with a groove, when the password disks are in a locking state, at least one groove on each password disk is not over against the lock cylinder, the lock cylinder extends into the chute, the lock block is tightly pressed on the lock cylinder under the action of the first spring, when the password disks are in an unlocking state, the groove on each password disk is over against the lock cylinder, the lock cylinder leaves the chute under the action of the second spring, and the lock block is pressed on the plug under the action of the first spring; the locking piece is equipped with the release link that wears out the end cap in the one end that is close to the end cap along the axial of slide opening, presses the release link and drives the first spring of locking piece compression.

Through the technical scheme, when the plurality of password disks rotate to correct password positions, the butterfly valve is in an unlocking state, the lock cylinder leaves the sliding groove and extends into the groove under the action of the second spring, and then the lock block drives the two lock rods to leave two sides of the valve plate under the action of the first spring, so that the valve plate can be conveniently rotated and opened; when needs are with butterfly valve locking, make the valve plate rotate to the position of closing earlier, then press the release link and drive the first spring of locking piece compression, the locking piece drives two locking levers and extends the both sides of valve plate, press the plush copper that resets and drive the lock core and stretch into the spout in the compression second spring after that, rotate the position that the password dish left the correct password simultaneously, loosen the release link and reset the plush copper, the locking piece compresses tightly on the lock core under first spring action, locking compresses tightly on the hole lateral wall of at least one password dish under the second spring action, thereby realize the locking of butterfly valve.

Furthermore, the number of the coded disks is four, and the plugs are fixedly arranged on the convex columns through pins.

Furthermore, a convex block is arranged on the side face of the valve body, a mounting groove is formed in the convex block and outside the valve rod, a sealing ring sleeved on the valve rod is arranged in the mounting groove, a plug sleeved on the valve rod is fixedly mounted at an opening of the mounting groove, and the plug is used for preventing the sealing ring from being separated from the mounting groove; and a convex shoulder is arranged on the outer side of the circumference of the valve rod extending out of the plug, and a gland covering the convex shoulder is fixedly installed on the plug.

Further, the one end fixed mounting that the valve rod stretches out the gland has the handle, fixed mounting has the positioning disk on the gland, it has the locating lever to articulate on the handle, be equipped with positioning spring between handle and the locating lever, positioning spring is used for forcing the one end of locating lever to insert in the constant head tank of the outer circumference side of positioning disk.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

when the butterfly valve is locked, the valve plate is closed, and the locking block drives the two locking rods to respectively extend to two sides of the valve plate, so that the valve plate is prevented from rotating; the butterfly valve realizes the locking or unlocking of the valve plate by controlling the two lock rods to extend to or leave from the two sides of the valve plate, so that the anti-theft structure of the valve plate is more reliable.

Drawings

FIG. 1 is a cross-sectional view of the present invention with the valve plate in a closed position;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the valve plate of FIG. 2 in an unlocked configuration;

FIG. 4 is a schematic structural view of the valve body of the present invention;

fig. 5 is a schematic three-dimensional structure diagram of the locking block of the present invention.

Detailed Description

Please refer to fig. 1-5, which illustrates a butterfly valve, comprising a valve body 1, wherein a channel 101 is arranged in the valve body 1, a side surface of the valve body 1 is rotatably connected with a valve rod 3, one end of the valve rod 3 extends into the channel 101, a valve plate 2 for controlling the on-off of the channel 101 is fixedly arranged between the ends of the valve rod 3 extending into the channel 101, the butterfly valve further comprises a locking mechanism, the locking mechanism comprises a locking block 9 and a password component, a convex column 11 is arranged on the side surface of the valve body 1 along the direction perpendicular to the valve rod 3, a sliding hole 12 is arranged in the convex column 11 along the axial direction, a plug 13 extending into the sliding hole 12 is fixedly arranged at the opening of the sliding hole 12 by the convex column 11, and the plug 13 is fixedly arranged on the convex. The locking piece 9 sliding connection is in slide opening 12, locking piece 9 is equipped with two locking levers 91 that stretch into in the passageway 101 along the axial of slide opening 12, the password subassembly is used for controlling locking piece 9 along the axial motion of slide opening 12, and when the locking state, the butterfly valve is closed and locking piece 9 drives two locking levers 91 and extends the both sides of valve plate 2 respectively, and when the state of unblanking, locking piece 9 drives two locking levers 91 and leaves the both sides of valve plate 2.

The password assembly comprises a lock cylinder 7, a first spring 10 and a second spring 8, a notch 11a communicated with a sliding hole 12 is formed in the side face of a convex column 11, a sliding groove 13a communicated with the notch 11a is formed in the outer side face of a plug 13 extending into the sliding hole 12, the lock cylinder 7 is connected in the notch 11a in a sliding mode along the radial direction of the sliding hole 12, a resetting raised head 71 is arranged at one end, far away from the plug 13, of the lock cylinder 7 along the radial direction of the sliding hole 12, four password discs 6 are rotatably connected between the plug 13 and the resetting raised head 71 on the convex column 11, the first spring 10 is arranged between the bottom of the lock block 9 and the bottom of the sliding hole 12 and used for forcing the lock block 9 to move towards the plug 13, and the second spring 8 is located in the sliding groove 13a and used for forcing the lock cylinder 7 to move towards the; the side wall of the inner hole of each password disk 6 is provided with a groove 61, when in a locking state, at least one groove 61 on each password disk 6 is not over against the lock cylinder 7, the lock cylinder 7 extends into the chute 13a, the lock block 9 is tightly pressed on the lock cylinder 7 under the action of the first spring 10, when in an unlocking state, the groove 61 on each password disk 6 is over against the lock cylinder 7, the lock cylinder 7 leaves the chute 13a under the action of the second spring 8, and the lock block 9 is pressed on the plug 13 under the action of the first spring 10; a reset rod 94 penetrating out of the plug 13 is arranged at one end, close to the plug 13, of the locking block 9 along the axial direction of the sliding hole 12, and the reset rod 94 is pressed to drive the locking block 9 to compress the first spring 10.

The side surface of the valve body 1 is provided with a convex block 16, the convex block 16 is internally provided with an installation groove 161 at the outer side of the valve rod 3, a sealing ring 17 sleeved on the valve rod 3 is arranged in the installation groove 161, a plug 18 sleeved on the valve rod 3 is fixedly installed at an opening of the installation groove 161, and the plug 18 is used for preventing the sealing ring 17 from separating from the installation groove 161; a shoulder 31 is arranged on the circumference outer side of the valve rod 3 extending out of the plug 18, and a gland 19 covered on the shoulder 31 is fixedly arranged on the plug 18.

The one end fixed mounting that valve rod 3 stretches out gland 19 has handle 20, fixed mounting has positioning disk 21 on the gland 19, it has locating lever 22 to articulate on the handle 20, be equipped with positioning spring 23 between handle 20 and the locating lever 22, positioning spring 23 is used for forcing positioning lever 22's one end to insert in the constant head tank (being shown in the figure) of the outer circumference side of positioning disk 21.

When the four password disks 6 rotate to the correct password positions, the butterfly valve is in an unlocking state, the lock cylinder 7 leaves the chute 13a and extends into the groove 61 under the action of the second spring 8, and then the lock block 9 drives the two lock rods 91 to leave two sides of the valve plate 2 under the action of the first spring 10, so that the valve plate 2 can be opened by rotation; when the butterfly valve is opened, the positioning rod 22 is firstly pinched by hands to compress the positioning spring 23, so that one end of the positioning rod 22 is separated from the positioning groove (shown in the figure) of the positioning disc 21, then the rotating handle 20 drives the valve plate 2 to open the channel 101 through the valve rod 3, the positioning rod 22 is loosened, and one end of the positioning rod 22 extends into the positioning groove under the action of the positioning spring 23.

When the butterfly valve needs to be locked, the positioning rod 22 is firstly pinched by hands to compress the positioning spring 23, so that one end of the positioning rod 22 is separated from the positioning groove (shown in the figure) of the positioning disc 21, then the rotating handle 20 drives the valve plate 2 to rotate to the position for closing the channel 101 through the valve rod 3, the positioning rod 22 is loosened, and one end of the positioning rod 22 extends into the positioning groove under the action of the positioning spring 23. Then, the reset rod 94 is pressed to drive the locking block 9 to compress the first spring 10, the locking block 9 drives the two locking rods 91 to extend to two sides of the valve plate 2, then the reset raised head 71 is pressed to drive the lock cylinder 7 to extend into the sliding groove 13a to compress the second spring 8, meanwhile, the password disk 6 is rotated to leave the position of the correct password, the reset rod 94 and the reset raised head 71 are loosened, the locking block 9 is pressed on the lock cylinder 7 under the action of the first spring 10, and is locked on the side wall of the inner hole of at least one password disk 6 under the action of the second spring 8, so that the butterfly valve is locked.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A butterfly valve comprises a valve body, wherein a channel is arranged in the valve body, the side surface of the valve body is rotatably connected with a valve rod of which one end extends into the channel, a valve plate for controlling the on-off of the channel is fixedly arranged between the ends of the valve rod extending into the channel, the butterfly valve is characterized by further comprising a locking mechanism, the locking mechanism comprises a locking block and a password component, the side surface of the valve body is provided with a convex column along the direction perpendicular to the valve rod, a sliding hole is formed in the convex column along the axial direction of the valve rod, an end cap extending into the sliding hole is fixedly arranged at the opening of the sliding hole by the convex column, the locking block is connected in the sliding hole in a sliding manner, the locking block is provided with two locking rods extending into the channel along the axial direction of the sliding hole, the password component is used for controlling the axial movement of the locking block along the sliding hole, when the butterfly valve is in a locking state, the locking block drives the two locking rods to leave two sides of the valve plate.

2. The butterfly valve according to claim 1, wherein the combination assembly comprises a lock cylinder, a first spring and a second spring, a notch communicated with the sliding hole is formed in the side surface of the convex cylinder, a sliding groove communicated with the notch is formed in the outer side surface of the plug extending into the sliding hole, the lock cylinder is connected in the notch in a sliding mode along the radial direction of the sliding hole, a resetting convex head is arranged at one end, far away from the plug, of the lock cylinder along the radial direction of the sliding hole, a plurality of combination disks are rotatably connected between the plug and the resetting convex head on the convex cylinder, the first spring is arranged between the lock block and the bottom of the sliding hole and used for forcing the lock block to move towards the plug, and the second spring is located in the sliding groove and used for forcing the lock cylinder to move towards the direction far; the side wall of an inner hole of each password disk is provided with a groove, when the password disks are in a locking state, at least one groove on each password disk is not over against the lock cylinder, the lock cylinder extends into the chute, the lock block is tightly pressed on the lock cylinder under the action of the first spring, when the password disks are in an unlocking state, the groove on each password disk is over against the lock cylinder, the lock cylinder leaves the chute under the action of the second spring, and the lock block is pressed on the plug under the action of the first spring; the locking piece is equipped with the release link that wears out the end cap in the one end that is close to the end cap along the axial of slide opening, presses the release link and drives the first spring of locking piece compression.

3. The butterfly valve of claim 2, wherein the number of the combination disks is four, and the plugs are fixedly mounted on the bosses through pins.

4. The butterfly valve according to claim 1, wherein a projection is arranged on the side surface of the valve body, a mounting groove is arranged on the outer side of the valve rod in the projection, a sealing ring sleeved on the valve rod is arranged in the mounting groove, a plug sleeved on the valve rod is fixedly mounted at an opening of the mounting groove, and the plug is used for preventing the sealing ring from being separated from the mounting groove; and a convex shoulder is arranged on the outer side of the circumference of the valve rod extending out of the plug, and a gland covering the convex shoulder is fixedly installed on the plug.

5. The butterfly valve of claim 4, wherein a handle is fixedly mounted at an end of the valve rod extending out of the gland, a positioning plate is fixedly mounted on the gland, a positioning rod is hinged to the handle, and a positioning spring is disposed between the handle and the positioning rod and used for forcing an end of the positioning rod to be inserted into the positioning groove at the outer circumferential side surface of the positioning plate.