CN110939741B

CN110939741B - Butterfly valve without detention

Info

Publication number: CN110939741B
Application number: CN201911131494.6A
Authority: CN
Inventors: 蔡学炎
Original assignee: Zhejiang Libaijia Pump Valve Technology Co ltd
Current assignee: Zhejiang Libaijia Pump Valve Technology Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2021-04-30
Anticipated expiration: 2039-11-19
Also published as: CN110939741A

Abstract

The utility model provides a no delay butterfly valve, includes the valve body of inside fretwork, places the valve shaft and the swing joint in the disc of valve shaft of valve body in, no delay butterfly valve still includes the base that blocks of fixed connection in the valve body inner wall, block the shape size looks adaptation of the shape when being in the coplanar of base and disc and the longitudinal section of valve body inner wall, block the base including block the base body and place the slider that blocks the base body in, block the inside sliding tray that is equipped with the big or small looks adaptation of slider shape of base body, the valve shaft bottom includes the gear shaft, be equipped with a plurality of teeth of a cogwheel on the slider, the teeth of a cogwheel and gear.

Description

Butterfly valve without detention

Technical Field

The invention relates to the field of cleaning equipment, in particular to a retention-free butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, which can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil, liquid metal, radioactive media and the like, comprises a disc for controlling the opening and closing of a low-pressure pipeline medium and a valve shaft fixedly connected to the butterfly valve, wherein the disc rotates around the valve shaft to open and close the butterfly valve, however, in the process of controlling whether the fluid flows through the butterfly valve, the butterfly valve in the prior art cannot ensure that the fluid cannot be retained in the butterfly valve, once the retained matter in the butterfly valve is not cleaned in time, when the fluid passes through the butterfly valve next time, the quality of the fluid can be affected after the two fluids are mixed, for the high-precision chemical industry, the condition can easily cause unqualified product quality, great loss can be caused to production activities, and the condition cannot be allowed to appear, and all take the butterfly valve apart the washing after every use, firstly, can increase manufacturing cost, very inconvenient, the second, dismantle the leakproofness that the butterfly valve can influence the butterfly valve many times.

Disclosure of Invention

In order to solve the problems, the invention provides a retention-free butterfly valve which can ensure that no retention exists when fluid in the butterfly valve flows through a valve body and can ensure the internal sealing performance of the butterfly valve.

The technical scheme of the invention is as follows: the utility model provides a no delay butterfly valve, includes the valve body of inside fretwork, places the valve shaft and the swing joint in the disc of valve shaft of valve body in, no delay butterfly valve still includes the base that blocks of fixed connection in the valve body inner wall, block the shape size looks adaptation of the shape when being in the coplanar of base and disc and the longitudinal section of valve body inner wall, block the base including block the base body and place the slider that blocks the base body in, block the inside sliding tray that is equipped with the big or small looks adaptation of slider shape of base body, the valve shaft bottom includes the gear shaft, be equipped with a plurality of teeth of a cogwheel on the slider, the teeth of a cogwheel and gear.

Adopt above-mentioned technical scheme, when the valve body is opened to needs, drive the disc through the rotary valve shaft and rotate, reach the effect of opening the valve, when opening the valve, because the valve shaft bottom is equipped with the gear shaft, the valve shaft rotates and can drive the gear shaft rotatory, because the gear teeth meshing on gear shaft and the slider, the rotation of gear shaft can drive the slider motion, make the slider stretch out to blockking the base body outside, when closing the valve body, the valve shaft counter-rotation, the gear shaft can drive the slider to blockking this internal side of base and contracting, just so can accomplish the concertina movement of slider, at the flexible in-process of slider, can clear away the retentate in the valve body, reach the effect of guaranteeing that the valve body is inside not to have the retentate.

The invention further comprises the following steps: the quantity of slider is two, and two sliders are located the gear shaft left and right sides respectively symmetrically.

By adopting the technical scheme, the quantity of the sliding blocks is two, and the two sliding blocks are respectively and symmetrically arranged at the left side and the right side of the gear shaft, so that when the gear shaft rotates, the two sliding blocks can move in opposite directions, the two sides of the blocking base can be cleaned, and the efficiency of cleaning retentate in the valve body is greatly improved.

The invention further comprises the following steps: the gear shaft rotates 90 degrees to drive the sliding block to slide for a distance less than the length of the sliding groove.

By adopting the technical scheme, the sliding distance of the sliding block is driven by the gear shaft to rotate 90 degrees and is smaller than the length of the sliding groove, so that the sliding block can not slide out of the sliding groove, and the functional failure of cleaning the retentate by the butterfly valve is avoided.

The invention further comprises the following steps: the quantity of sliding tray is two, and the sliding tray does not run through and blocks the base body, and the opening direction of two sliding trays is opposite.

By adopting the technical scheme, the number of the sliding grooves is two, the sliding grooves do not penetrate through the blocking base body, and the opening directions of the two sliding grooves are opposite, so that fluid can flow into the sliding grooves when the sliding block slides, and no foreign matter is in the valve body.

The invention further comprises the following steps: the connecting part of the sliding block and the blocking base body is provided with a sealing ring, and the sealing ring is matched with the shape and the size of the longitudinal section of the sliding groove.

By adopting the technical scheme, the sealing ring is arranged at the joint of the sliding block and the blocking base body, so that the sealing property between the sliding block and the blocking base body can be ensured, the fluid is further prevented from flowing into the sliding groove, and no foreign matter is arranged in the valve body.

The invention further comprises the following steps: the valve shaft, the disc and the blocking base are respectively two in number.

By adopting the technical scheme, the valve shaft, the disc and the blocking base are respectively two in number, so that the sealing performance inside the valve body and the characteristic of no retentate can be further ensured.

The invention further comprises the following steps: the two valve shafts rotate in opposite directions.

Adopt above-mentioned technical scheme, because the rotation direction of two valve shafts is opposite, can guarantee two gliding in-processes that block the slider on the base, when one of them slider stretches out, another slider withdrawal, two sliders can avoid like this to block the retentate card inside the valve body, guarantee to be able to be with retentate clean up.

Drawings

Fig. 1 is a schematic structural diagram of a non-retention butterfly valve according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a no-dwell butterfly valve in accordance with an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a slider in a non-retained butterfly valve according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a valve shaft in a non-retention butterfly valve according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1-4, a no delay butterfly valve, valve shaft 2 and swing joint in valve shaft 2 of valve body 1 are placed in including the valve body 1 of inside fretwork, no delay butterfly valve still includes fixed connection in the base 4 that blocks of valve body 1 inner wall, block the shape size looks adaptation of the shape when being in the coplanar of base 4 and disc 3 and the longitudinal section of valve body 1 inner wall, block base 4 including block base body 5 and place slider 6 that blocks base body 5 in, block the inside sliding tray 7 that is equipped with the 6 shape size looks adaptations of slider of

base body

5, 2 bottoms of valve shaft include gear shaft 8, be equipped with a plurality of teeth of a cogwheel 9 on slider 6, the teeth of a cogwheel 9 meshes with gear shaft 8.

When valve body 1 is opened to needs, drive disc 3 through rotary valve shaft 2 and rotate, reach the effect of opening the valve, when opening the valve, because 2 bottoms of valve shaft are equipped with

gear shaft

8, 2 rotations of valve shaft can drive gear shaft 8 rotatory, because gear teeth 9 meshing on gear shaft 8 and the slider 6, the rotation of gear shaft 8 can drive slider 6 motion, make slider 6 stretch out to blockking the base body 5 outside, when

closing valve body

1, 2 reverse rotations of valve shaft, gear shaft 8 can drive slider 6 and contract to blockking base body 5 inboard, just so can accomplish slider 6's concertina movement, at the flexible in-process of slider 6, can clear away the retentate in the valve body 1, reach the effect of guaranteeing that there is not the retentate in the valve body 1 inside.

The number of the sliding blocks 6 is two, and the two sliding blocks 6 are symmetrically arranged on the left side and the right side of the gear shaft 8 respectively.

Because the quantity of slider 6 is two, and two sliders 6 are located the gear shaft 8 left and right sides respectively symmetrically, like this when the gear shaft 8 is rotatory, two sliders 6 can reverse direction motion, enable like this to block 4 both sides of base and all obtain the clearance, improve the efficiency of the retentate in the clearance valve body 1 greatly.

The distance that the gear shaft 8 rotates 90 degrees to drive the sliding block 6 to slide is less than the length of the sliding groove 7.

Because the rotatory 90 degrees of gear shaft 8 drive the gliding distance of slider 6 and be less than the length of sliding tray 7, can guarantee like this that slider 6 can not roll off sliding tray 7, avoid the functional failure of butterfly valve clearance retentate.

The number of the sliding grooves 7 is two, the sliding grooves 7 do not penetrate through the blocking base body 5, and the opening directions of the two sliding grooves 7 are opposite.

Because the number of the sliding grooves 7 is two, the sliding grooves 7 do not penetrate through the blocking base body 5, and the opening directions of the two sliding grooves 7 are opposite, fluid can be prevented from flowing into the sliding grooves 7 when the sliding block 6 slides, and no foreign matter is in the valve body 1.

And a sealing ring 10 is arranged at the joint of the sliding block 6 and the blocking base body 5, and the sealing ring 10 is matched with the shape and size of the longitudinal section of the sliding groove 7.

Because the sealing ring 10 is arranged at the joint of the sliding block 6 and the blocking base body 5, the sealing performance between the sliding block 6 and the blocking base body 5 can be ensured, the fluid is further prevented from flowing into the sliding groove 7, and no foreign matter is arranged in the valve body 1.

The number of the valve shaft 2, the disc 3 and the blocking base 4 is two.

Since the number of the valve shaft 2, the disk 3 and the stopper base 4 is two, respectively, it is possible to further ensure the sealability and the retentate-free property inside the valve body 1.

The two valve shafts 2 rotate in opposite directions.

Because the rotation direction of two valve shafts 2 is opposite, can guarantee two gliding in-processes of slider 6 on blockking the base 4, when one of them slider 6 stretches out, another slider 6 withdrawal, two sliders 6 can avoid like this to block the retentate card inside valve body 1, guarantee to be able to be with the retentate clean up.

Claims

1. The utility model provides a no butterfly valve that is detained, includes the valve body of inside fretwork, places the valve shaft and the disc of swing joint in the valve shaft of valve body in, its characterized in that: there is not butterfly valve that is detained still includes the base that blocks of fixed connection in the valve body inner wall, block the shape size looks adaptation of the shape when being in the coplanar of base and disc and the longitudinal section of valve body inner wall, block the base including block the base body and place the slider that blocks the base body in with, block the inside sliding tray that is equipped with the big or small looks adaptation of slider shape of base body, the valve shaft bottom includes the gear shaft, be equipped with a plurality of teeth of a cogwheel on the slider, the teeth of a cogwheel and gear shaft meshing.

2. A no-retention butterfly valve according to claim 1, wherein: the quantity of slider is two, and two sliders are located the gear shaft left and right sides respectively symmetrically.

3. A no-retention butterfly valve according to claim 1, wherein: the gear shaft rotates 90 degrees to drive the sliding block to slide for a distance less than the length of the sliding groove.

4. A no-retention butterfly valve according to claim 2, wherein: the quantity of sliding tray is two, and the sliding tray does not run through and blocks the base body, and the opening direction of two sliding trays is opposite.

5. A no-retention butterfly valve according to claim 2, wherein: the connecting part of the sliding block and the blocking base body is provided with a sealing ring, and the sealing ring is matched with the shape and the size of the longitudinal section of the sliding groove.

6. A no-retention butterfly valve according to claim 1, wherein: the valve shaft, the disc and the blocking base are respectively two in number.

7. A no-retention butterfly valve according to claim 6, wherein: the two valve shafts rotate in opposite directions.