CN212004284U

CN212004284U - Accurate butterfly valve that adjusts of flow

Info

Publication number: CN212004284U
Application number: CN202020445557.7U
Authority: CN
Inventors: 杨攀; 娄和万; 谭永深
Original assignee: Henan Huabiao Instrument Technology Co ltd
Current assignee: Henan Huabiao Instrument Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-24
Anticipated expiration: 2030-03-31

Abstract

The utility model relates to the technical field of butterfly valve design and manufacture, and discloses a flow accurate adjustment butterfly valve, which comprises a valve body, a valve plate and a valve shaft, wherein the valve plate is driven by the rotation of the valve shaft to realize the opening and closing action with the valve body; wherein a side end face of the valve plate is equipped with the rectangle recess that length direction and axial direction are the same, and the recess is cut apart into valve shaft and lower valve shaft with the valve shaft, goes up valve shaft and lower valve shaft respectively with raft fixed connection, the upper portion or the lower part of recess inner bottom are equipped with the regulation hole that runs through the valve plate, and the position that the pivot is located the recess is the screw rod section, the cover is equipped with the slider and both screw-thread fit on the screw rod section of pivot, the slider outline cooperatees with the recess, the beneficial effects of the utility model are that: can carry out dual flow control, flow control is more accurate, and the adjustable range of valve is bigger.

Description

Accurate butterfly valve that adjusts of flow

Technical Field

The utility model relates to a butterfly valve design and manufacturing technical field especially relate to an accurate regulation butterfly valve of flow.

Background

The butterfly valve is a simple regulating valve, mainly used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil, liquid metal and radioactive media. The pipe mainly plays a role in cutting off and throttling. The existing butterfly valve structure generally comprises an internal hollow valve body, a valve plate arranged in the valve body, a through hole arranged in the radial direction on the valve plate and a vertical valve shaft passing through the through hole, wherein two ends of the valve shaft are connected with the valve body in a rotating manner, one end of the valve shaft penetrates through the valve body and extends out, the valve plate and the valve shaft are fixedly connected in a key connection structure or a non-rotation matching structure or a pin structure and other modes, and the valve plate is driven by the valve shaft to open and close with the valve body. When the valve is completely opened, the valve plate is parallel to the flowing direction of fluid, the flow is maximum at the moment, when the valve is closed, the valve shaft drives the valve plate to rotate, the passing area of the edge of the valve plate and the fluid in the valve body channel is gradually reduced, and even if the valve is closed quickly, the flow is still large, but the valve is rotated a little bit to be completely closed. The butterfly valve with the structure has small adjustment range and unstable adjustment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides an accurate regulation butterfly valve of flow.

In order to realize the purpose, the technical scheme of the utility model is that: a flow accurate regulation butterfly valve comprises a valve body, a valve plate, a valve shaft and a valve seat, wherein the valve body is hollow inside, the valve plate is arranged in the valve body, the valve plate is provided with a through hole in the radial direction, and the valve shaft vertically passes through the through hole; the valve plate is characterized in that a rectangular groove with the same length direction and axial direction is formed in one side end face of the valve plate, the groove divides the valve shaft into an upper valve shaft and a lower valve shaft, the upper valve shaft and the lower valve shaft are fixedly connected with a raft, an adjusting hole penetrating through the valve plate is formed in the upper portion or the lower portion of the inner bottom of the groove, the position, located in the groove, of the rotating shaft is a threaded rod section, a sliding block is sleeved on the threaded rod section of the rotating shaft and in threaded fit with the threaded rod section, and the outer contour of the; when the rotating shaft is located at the initial position, the sliding block completely covers the adjusting hole in a sealing mode, when the rotating shaft starts to rotate, the sliding block slides along the threaded rod section of the rotating shaft along the groove, and the adjusting hole gradually enlarges the exposed area.

The working principle of this application does: the pivot is independent rotation, and the screw rod section and the recess that set up in the middle of the pivot carry on spacingly jointly to the slider to when the pivot rotated, the screw rod section of pivot drove the slider and slided along the recess, and slider and recess bottom are closely laminated. Therefore, the valve shaft can drive the valve plate to rotate to realize large flow regulation, the rotating shaft can drive the sliding block to slide, and small flow regulation is carried out through the exposed size of the regulating hole.

The utility model has the advantages that: can carry out dual flow control, flow control is more accurate, and the adjustable range of valve is bigger.

Drawings

Fig. 1 is the utility model discloses the accurate butterfly valve structure schematic diagram that adjusts of flow.

Fig. 2 is a schematic structural view of the slider when the adjusting hole is covered by half.

Fig. 3 is a rear view of the present invention shown in fig. 2.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1-3, the butterfly valve for precisely adjusting flow rate includes a hollow valve body 1, a valve plate 2 disposed in the valve body, a valve shaft 3 disposed on the valve plate 2 and having a through hole in a radial direction and a through hole vertically passing through the through hole, wherein two ends of the valve shaft 3 are rotatably connected to the valve body and the upper end of the valve shaft extends through the valve body, the valve plate 2 is fixedly connected to the valve shaft 3, the valve plate 2 is driven by the valve shaft 3 to open and close the valve body 1, a coaxial rotating shaft 4 is disposed at an axial center of the valve shaft, the lower end of the rotating shaft 4 is flush with the valve shaft, and the upper end of; the valve plate is characterized in that a rectangular groove 5 with the same length direction and axial direction is arranged on one side end face of the valve plate, the groove divides the valve shaft into an upper valve shaft and a lower valve shaft, the upper valve shaft and the lower valve shaft are respectively and fixedly connected with the raft, an adjusting hole 6 penetrating through the valve plate is arranged at the upper part or the lower part of the inner bottom of the groove, the part of the rotating shaft, which is positioned in the groove, is a threaded rod section 401, a sliding block 7 is sleeved on the threaded rod section 401 of the rotating shaft and is in threaded fit with the threaded rod section, and the; when the rotating shaft 4 is located at the initial position, the sliding block 7 completely covers the adjusting hole 6 in a sealing mode, when the rotating shaft 4 starts to rotate, the sliding block 7 slides along the groove along with the threaded rod section 401 of the rotating shaft, and the exposed area of the adjusting hole 6 is gradually enlarged.

When the sliding block is applied specifically, the shape of the groove is not limited to be rectangular, as long as each side surface can play a role in guiding and limiting the sliding block and is matched with the outline of the sliding block; the flow rate adjusting hole is not limited to a circular hole, and may be a through hole having another shape such as an ellipse.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The utility model provides an accurate butterfly valve of adjusting of flow, includes inside hollow valve body, sets up be provided with radial direction's perforating hole and the vertical valve shaft that passes through the perforating hole on valve plate, the valve plate in the valve body, the valve shaft both ends are connected and the upper end runs through the valve body and extend away with the valve body rotation, fixed connection between valve plate and the valve shaft, and the valve plate realizes opening and shutting the action its characterized in that with the valve body under the rotation drive of valve shaft: the axial center of the valve shaft is provided with a rotating shaft with the same axle center, the lower end of the rotating shaft is flush with the valve shaft, and the upper end of the rotating shaft protrudes out of the upper end surface of the valve shaft; the valve plate is characterized in that a rectangular groove with the same length direction and axial direction is formed in one side end face of the valve plate, the groove divides the valve shaft into an upper valve shaft and a lower valve shaft, the upper valve shaft and the lower valve shaft are fixedly connected with a raft, an adjusting hole penetrating through the valve plate is formed in the upper portion or the lower portion of the inner bottom of the groove, the position, located in the groove, of the rotating shaft is a threaded rod section, a sliding block is sleeved on the threaded rod section of the rotating shaft and in threaded fit with the threaded rod section, and the outer contour of the; when the rotating shaft is located at the initial position, the sliding block completely covers the adjusting hole in a sealing mode, when the rotating shaft starts to rotate, the sliding block slides along the threaded rod section of the rotating shaft along the groove, and the adjusting hole gradually enlarges the exposed area.