CN211779032U

CN211779032U - Stable butterfly valve capable of accurately controlling flow

Info

Publication number: CN211779032U
Application number: CN202020243245.8U
Authority: CN
Inventors: 闫龙飞
Original assignee: Nanjing Core Automation Co ltd
Current assignee: Nanjing Core Automation Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-10-27
Anticipated expiration: 2030-03-03

Abstract

A stable butterfly valve for accurately controlling flow comprises a valve body, a hand wheel is rotatably arranged on the valve body, the side surface of the shaft of the hand wheel is fixedly provided with a pointer, the valve body is fixedly provided with a dial plate, the dial plate is marked with scales, the shaft of the hand wheel penetrates through the dial plate and is coaxially arranged with the dial plate, the valve body is provided with a hand wheel clamping mechanism, the side surface of the shaft of the hand wheel is fixedly provided with a pointer, the valve body is fixedly provided with the dial plate, scales are marked on the dial plate, the shaft of the hand wheel penetrates through the dial plate and is coaxially arranged with the dial plate, the hand wheel can drive the pointer to rotate together when rotating, the scales pointed by the pointer can be observed when the butterfly plate rotates, the rotation angle of the butterfly plate can be conveniently controlled, the flow velocity passing through the valve body is controlled, and a hand wheel clamping mechanism is arranged on the valve body, so that the hand wheel can be fixed by a positioning rod after rotating.

Description

Stable butterfly valve capable of accurately controlling flow

Technical Field

The utility model belongs to the technical field of the butterfly valve technique and specifically relates to a stable butterfly valve of accurate control flow is related to.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. Butterfly valve among the prior art generally includes valve body, butterfly plate, drive mechanism and hand wheel, and drive mechanism is worm gear mechanism, rotates the hand wheel and can drive the worm wheel and rotate, and the worm wheel rotates and drives the worm and rotate, and the worm rotates and drives the butterfly plate and rotate, realizes the control to the flow, but the hand wheel of this kind of butterfly valve is unstable, and is accurate inadequately to the control of flow, and for this reason we propose a stable butterfly valve of accurate control flow for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

To the above circumstances, for overcoming prior art's defect, the utility model provides a stable butterfly valve of accurate controlled flow is used for solving above-mentioned problem.

In order to realize the above-mentioned purpose, the utility model relates to a stable butterfly valve of accurate control flow, which comprises a valve body, it is provided with the hand wheel to rotate on the valve body, the fixed pointer that is equipped with in side of the axle of hand wheel, the fixed dial plate that is equipped with on the valve body, the dial plate superscript is scaled, the axle of hand wheel run through the dial plate and with the coaxial setting of dial plate, be provided with hand wheel chucking mechanism on the valve body, the epaxial integrated into one piece of hand wheel has the holding ring, the side of holding ring is equipped with the locating hole, it is equipped with the locating lever.

Preferably, a return spring is connected between the positioning rod and the valve body, one end of the positioning rod is inserted into the positioning hole in a sliding mode, and a handle is fixedly arranged at the other end of the positioning rod.

Preferably, a cylinder is fixedly arranged on the valve body, the positioning rod is inserted into the cylinder in a sliding mode, a stop block is integrally formed on the side face of the positioning rod, a stop block sliding groove is formed in the inner wall of the cylinder, one end, far away from the positioning ring, of the stop block sliding groove is of an opening structure, and the stop block can be pulled out of the stop block sliding groove.

Preferably, a positioning rod clamping notch is formed in the end face of the cylinder.

Preferably, the number of the positioning holes on the side surface of the positioning ring is not less than 6, and the positioning holes are uniformly distributed on the side surface of the positioning ring.

Has the advantages that:

1. the utility model discloses the fixed pointer that is equipped with in side of the axle of hand wheel, the fixed dial plate that is equipped with on the valve body, the scale has been marked on the dial plate, the axle of hand wheel runs through the dial plate and sets up with the dial plate is coaxial, the hand wheel can drive the pointer and rotate together when rotating, can observe the scale that the pointer points when rotating, be convenient for control the turned angle of butterfly plate, control the velocity of flow through the valve body;

2. the valve body of the utility model is provided with a hand wheel chucking mechanism, so that the hand wheel can be fixed by the positioning rod after rotating;

3. the utility model discloses when needs rotate the hand wheel, pull the locating lever backward, the locating lever is in the backward gliding, and the dog slides in the dog spout thereupon, takes the dog spout back out, rotates the locating lever and makes dog and dog spout stagger, loosens the handle and goes into the locating lever card in the locating lever chucking gap with the locating lever card, can use both hands to rotate the hand wheel.

Drawings

Fig. 1 is the utility model relates to a structure schematic diagram of accurate controlled flow's stable butterfly valve.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of the connection structure of the middle positioning rod and the positioning ring of the present invention.

Fig. 4 is an enlarged schematic view of B in fig. 3.

Fig. 5 is a schematic view of the structure of the cylinder of the present invention.

Detailed Description

The directional terms of the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are only used for explaining and explaining the present invention, but not for limiting the scope of the present invention.

Referring to fig. 1 to 5, the utility model relates to a stable butterfly valve's of accurate controlled flow component structure, it includes valve body 1, it is provided with hand wheel 2 to rotate on the valve body 1, it is different from prior art be, the fixed pointer 3 that is equipped with in side of the axle of hand wheel 2, fixed dial plate 4 that is equipped with on the valve body 1, dial plate 4 superscript has the scale, the axle of hand wheel 2 runs through dial plate 4 and with the coaxial setting of dial plate 4, hand wheel 2 can drive pointer 3 and rotate together when the pivoted, can observe the scale that pointer 3 indicates when the pivoted, be convenient for control the turned angle of butterfly plate, flow rate to through valve body 1 is controlled. Be provided with hand wheel chucking mechanism on the valve body 1, the epaxial integrated into one piece of hand wheel 2 has holding ring 5, and the side of holding ring 5 is equipped with the locating hole, and the slip is equipped with locating lever 6 on the valve body 1, and hand wheel 2 among the prior art does not have angle fixing device after rotating, and is unstable, the utility model discloses set up hand wheel chucking mechanism on valve body 1 for hand wheel 2 can fix with the rotation of locating lever 6 to hand wheel 2 after rotating.

A return spring 7 is connected between the positioning rod 6 and the valve body 1, one end of the positioning rod 6 is inserted into the positioning hole in a sliding mode, a handle 8 is fixedly arranged at the other end of the positioning rod 6, when the hand wheel 2 needs to be rotated, the handle 8 can be held to pull the positioning rod 6 backwards, then the hand wheel 2 is rotated, and when the hand wheel 2 is fixed, the handle 8 is loosened, and the head of the positioning rod 6 is inserted into the corresponding positioning hole. The fixed drum 9 that is equipped with on valve body 1, locating lever 6 slides and inserts in drum 9, the side integrated into one piece of locating lever 6 has dog 10, the inner wall of drum 9 is equipped with dog spout 11, the one end that locating ring 5 was kept away from to dog spout 11 is open structure, dog 10 can be taken out from dog spout 11, be equipped with locating lever chucking breach 12 on the terminal surface of drum 9, when needing to rotate hand wheel 2, pull locating lever 6 backward, locating lever 6 is when backward gliding, dog 10 slides along with it in dog spout 11, take dog spout 11 back out to dog 10, it staggers to rotate locating lever 6 and dog spout 11, loosen handle 8 and block locating lever 6 card into locating lever chucking breach 12, can use both hands to rotate hand wheel 2, need not vacate a hand when rotating hand wheel 2 and pull up locating lever 6 backward. The number of the positioning holes on the side surface of the positioning ring 5 is not less than 6, and the positioning holes are uniformly distributed on the side surface of the positioning ring 5.

The working principle is as follows: the utility model discloses a pointer 3 is fixed to the side of the axle of hand wheel 2, dial plate 4 is fixed on valve body 1, scale is marked on dial plate 4, the axle of hand wheel 2 runs through dial plate 4 and sets up coaxially with dial plate 4, hand wheel 2 can drive pointer 3 to rotate when rotating, the scale that pointer 3 points to can be observed when rotating, be convenient for control the turned angle of butterfly plate, control the flow velocity through valve body 1, the valve body 1 is provided with hand wheel chucking mechanism, make hand wheel 2 rotate after, can use locating lever 6 to fix the rotation of hand wheel 2, when needing to rotate hand wheel 2, draw locating lever 6 backward, locating lever 6 when backward sliding, dog 10 slides in dog spout 11 therewith, after taking dog 10 out of dog spout 11, rotate locating lever 6 to make dog 10 stagger with spout 11, loosen handle 8 and insert locating lever 6 into locating lever chucking breach 12, the hand wheel 2 can be turned using both hands.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an accurate control flow's stable butterfly valve, includes valve body (1), it is provided with hand wheel (2) to rotate on valve body (1), its characterized in that, the fixed pointer (3) that are equipped with in side of the axle of hand wheel (2), the fixed dial plate (4) that are equipped with on valve body (1), dial plate (4) superscript has the scale, the axle of hand wheel (2) run through dial plate (4) and with dial plate (4) coaxial setting, be provided with hand wheel chucking mechanism on valve body (1), the epaxial integrated into one piece of hand wheel (2) has holding ring (5), the side of holding ring (5) is equipped with the locating hole, it is equipped with locating lever (6) to slide on valve body (1).

2. The butterfly valve of claim 1, wherein a return spring (7) is connected between the positioning rod (6) and the valve body (1), one end of the positioning rod (6) is slidably inserted into the positioning hole, and a handle (8) is fixedly arranged at the other end of the positioning rod (6).

3. The butterfly valve for accurately controlling the flow rate of the butterfly valve according to claim 1, wherein a cylinder (9) is fixedly arranged on the valve body (1), the positioning rod (6) is slidably inserted into the cylinder (9), a stopper (10) is integrally formed on the side surface of the positioning rod (6), a stopper sliding groove (11) is formed in the inner wall of the cylinder (9), one end of the stopper sliding groove (11) far away from the positioning ring (5) is of an open structure, and the stopper (10) can be pulled out from the stopper sliding groove (11).

4. A stable butterfly valve with precise flow control according to claim 3, characterised in that the end surface of the cylinder (9) is provided with a rod-retaining notch (12).

5. The butterfly valve with precise flow control according to claim 1, wherein the number of the positioning holes on the side of the positioning ring (5) is not less than 6, and the positioning holes are uniformly distributed on the side of the positioning ring (5).