CN210318535U

CN210318535U - Flange butterfly valve with good sealing performance

Info

Publication number: CN210318535U
Application number: CN201921154596.5U
Authority: CN
Inventors: 刘洋
Original assignee: Tangguan Valve Co ltd
Current assignee: Tangguan Valve Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-04-14
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a flange butterfly valve with good sealing performance, which relates to the field of flange butterfly valves and aims at the problem of poor sealing performance of the existing flange butterfly valve, the following proposal is proposed, the flange butterfly valve comprises a butterfly valve shell, two hollow support rods are symmetrically and fixedly arranged at the upper end of the butterfly valve shell, the top ends of the two hollow support rods are fixedly connected with a driving shell, the right end surface inside the driving shell is rotatably provided with a worm, the left end of the worm is fixedly provided with a screw, the left end of the screw passes through the driving shell and extends to the left side of the driving shell, the left end of the screw is fixedly provided with a hand wheel, a locking cap is arranged on the screw in a threaded manner and is positioned at the left side of the driving shell, the front end of the worm is engaged with two worm wheels which are positioned inside the driving shell, the two worm wheels are respectively fixedly sleeved on two rotating shafts, simple and convenient operation, low manufacturing cost and high practicability.

Description

Flange butterfly valve with good sealing performance

Technical Field

The utility model relates to a flange dish valve field especially relates to a flange dish valve that leakproofness is good.

Background

The butterfly valve has simple structure, small volume and light weight, and is composed of a few parts. And the valve can be quickly opened and closed only by rotating 90 degrees, the operation is simple, and meanwhile, the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, the rotation angle is 0-90 degrees, and when the disc-shaped butterfly plate rotates to 90 degrees, the valve is in a full-open state. When the flange butterfly valve is in a fully open position, the thickness of the butterfly plate is the only resistance when a medium flows through the valve body, so that the pressure drop generated by the valve is small, and the flange butterfly valve has a good flow control characteristic. The butterfly valve has two sealing types of elastic sealing and metal sealing. The elastic sealing valve has sealing ring embedded in the valve body or attached to the butterfly plate. Only one valve plate in the present flange butterfly valve, and the leakproofness of valve plate and butterfly valve inner wall is poor to when the butterfly valve was closed, can not lock the valve plate and die, the valve plate can produce the rotation under the impact of strong rivers, and then influences sealed effect. Further provides a flange butterfly valve with good sealing performance.

Disclosure of Invention

The utility model provides a flange dish valve that leakproofness is good has solved the poor problem of current flange dish valve leakproofness.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flange butterfly valve with good sealing performance comprises a butterfly valve shell, wherein two hollow support rods are symmetrically and fixedly mounted at the upper end of the butterfly valve shell, the top ends of the two hollow support rods are fixedly connected with a driving shell, a worm is rotatably mounted on the right end face in the driving shell, a screw rod is fixedly mounted at the left end of the worm, the left end of the screw rod penetrates through the driving shell and extends to the left side of the driving shell, a hand wheel is fixedly mounted at the left end of the screw rod, a locking cap is mounted on the screw rod in a threaded manner and is located at the left side of the driving shell, two worm wheels are meshed at the front end of the worm and are located in the driving shell, the two worm wheels are fixedly sleeved on two rotating shaft rows respectively, the top ends of the two rotating shafts are rotatably connected with the driving shell, and the lower end of the, and is rotatably connected with the bottom end in the butterfly valve shell, and two valve plates are respectively and fixedly sleeved at the outer ends of the two rotating shafts.

Preferably, the outer end faces of the two valve plates are fixedly provided with elastic sealing rubber rings.

Preferably, the top ends of the two rotating shafts are respectively and rotatably connected with the top end inside the driving shell through two bearing seats, and the right end of the worm is rotatably connected with the inner wall of the driving shell through the bearing seats.

Preferably, the worm passes through the bearing and is connected with the rotation of drive shell left end, two the pivot is all connected with rotation of drive shell bottom and butterfly valve shell top through the pivot.

Preferably, the hand wheel is wrapped with an anti-slip rubber sleeve.

In the utility model, the sealing effect to the inner part of the shell of the butterfly valve can be improved by arranging the worm, the worm wheel, the rotating shaft, the valve plates and the like and increasing the number of the valve plates to two; the elastic sealing rubber ring is arranged, so that the sealing effect of the valve plate can be improved; the water flow is prevented from flowing from the gap between the valve plate and the disc valve shell; through setting up locking cap and screw rod, this design realizes when the valve plate is sealed, and it is fixed to lock the valve plate, avoids the valve plate under the impact of rivers, takes place to rotate, and then influences sealed effect.

The utility model discloses it is sealed effectual, easy operation is convenient, low in manufacturing cost, the practicality is high.

Drawings

Fig. 1 is a front view of a flange butterfly valve with good sealing performance according to the present invention.

Fig. 2 is a side view of the housing of the butterfly valve with good sealing performance of the present invention.

Fig. 3 is a cross-sectional view of a driving housing in a flange butterfly valve with good sealing performance.

Reference numbers in the figures: 1 hand wheel, 2 screw rods, 3 drive shells, 4 hollow support rods, 5 rotating shafts, 6 valve plates, 7 elastic sealing rubber rings, 8 butterfly valve shells, 9 worm wheels, 10 worms and 11 locking caps.

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.

Referring to fig. 1-3, a flange butterfly valve with good sealing performance comprises a butterfly valve shell 8, two hollow support rods 4 are symmetrically and fixedly installed at the upper end of the butterfly valve shell 8, the top ends of the two hollow support rods 4 are fixedly connected with a drive shell 3, a worm 10 is rotatably installed on the right end face inside the drive shell 3, a screw rod 2 is fixedly installed at the left end of the worm 10, the left end of the screw rod 2 penetrates through the drive shell 3 and extends to the left side of the drive shell 3, a hand wheel 1 is fixedly installed at the left end of the screw rod 2, a locking cap 11 is installed on the screw rod 2 in a threaded manner and is positioned at the left side of the drive shell 3, two worm wheels 9 are meshed at the front end of the worm 10, the two worm wheels 9 are positioned inside the drive shell 3, the two worm wheels 9 are respectively fixedly sleeved on two rotating shafts 5, the top ends of the, Hollow bracing piece 4 and butterfly valve shell 8 to with the inside bottom rotation of butterfly valve shell 8 and be connected, two valve plates 6 are fixed cover respectively to two pivot 5 outer ends.

The outer terminal surface all fixedly provided with elasticity sealing rubber circle 7 outside two valve plates 6, 5 tops of two pivots are connected with the inside top of drive shell 3 through two bearing frames respectively, worm 10 right-hand member passes through the bearing frame and is connected with 3 inner walls of drive shell rotation, worm 10 passes through the bearing and is connected with 3 left ends of drive shell rotation, two pivots 5 all rotate through pivot 5 and drive shell 3 bottoms and 8 tops of butterfly valve shell and be connected, wrap up in on the hand wheel 1 and be equipped with anti-skidding gum cover.

Example (b): through the rotatable screw rod 2 of hand wheel 1, screw rod 2 rotates and drives worm 10 and rotate, pivoted worm 10 drives worm wheel 9 and rotates, pivoted worm wheel 9 drives pivot 5 and rotates, pivoted pivot 5 drives valve plate 6 and rotates, pivoted valve plate 6 can realize carrying out the closing plate to butterfly valve shell 8 inside, and wrap up in the elasticity sealing rubber circle 7 of establishing through the outer terminal surface at valve plate 6, elasticity sealing rubber circle 7 can be hugged closely mutually with butterfly valve shell 8 inner wall, and then improve sealed effect, after sealed rotation is accomplished, staff wrench movement locking cap 11, and then can realize locking screw rod 2, and then can realize fixing valve plate 6, avoid valve plate 6 under the impact of rivers, take place to rotate, and then influence sealed effect. Through the arrangement of the worm 10, the worm wheel 9, the rotating shaft 5, the valve plates 6 and the like, the sealing effect on the interior of the butterfly valve shell 8 can be improved by increasing the number of the valve plates 6 to two; the elastic sealing rubber ring 7 is arranged, so that the sealing effect of the valve plate 6 can be improved; the water flow is prevented from flowing from the clearance between the valve plate 6 and the disc valve shell 8; through setting up locking cap 11 and screw rod 2, this design realizes when valve plate 6 is sealed, and it is fixed to lock the valve plate 6, avoids valve plate 6 under the impact of rivers, takes place to rotate, and then influences sealed effect. The utility model discloses it is sealed effectual, easy operation is convenient, low in manufacturing cost, the practicality is high.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The flange butterfly valve with good sealing performance comprises a butterfly valve shell (8) and is characterized in that two hollow support rods (4) are symmetrically and fixedly mounted at the upper end of the butterfly valve shell (8), the top ends of the hollow support rods (4) are fixedly connected with a driving shell (3), a worm (10) is rotatably mounted on the right end face inside the driving shell (3), a screw (2) is fixedly mounted at the left end of the worm (10), the left end of the screw (2) penetrates through the driving shell (3) and extends to the left side of the driving shell (3), a hand wheel (1) is fixedly mounted at the left end of the screw (2), a locking cap (11) is mounted on the screw (2) in a threaded manner, the locking cap (11) is located at the left side of the driving shell (3), two worm wheels (9) are meshed at the front end of the worm (10), and the two worm wheels (9) are located inside the driving shell (3, two worm wheel (9) are fixed cover respectively and are adorned in two pivot (5) line, two pivot (5) top all rotates with drive shell (3) to be connected, pivot (5) lower extreme passes drive shell (3), hollow support rod (4) and dish valve shell (8) in proper order to rotate with the inside bottom of dish valve shell (8) and be connected, two pivot (5) outer end is fixed the cover respectively and is equipped with two valve plates (6).

2. A flanged butterfly valve with good sealing performance according to claim 1, characterized in that an elastic sealing rubber ring (7) is fixedly arranged on the outer end face of each of the two valve plates (6).

3. The flanged butterfly valve with good sealing performance according to claim 1, characterized in that the top ends of the two rotating shafts (5) are rotatably connected with the top end inside the driving shell (3) through two bearing seats respectively, and the right end of the worm (10) is rotatably connected with the inner wall of the driving shell (3) through the bearing seats.

4. A flange butterfly valve with good sealing performance according to claim 1, wherein the worm (10) is rotatably connected with the left end of the driving housing (3) through a bearing, and both of the rotating shafts (5) are rotatably connected with the bottom end of the driving housing (3) and the top end of the butterfly valve housing (8) through the rotating shafts (5).

5. The flange butterfly valve with good sealing performance according to claim 1, characterized in that the handwheel (1) is wrapped with an anti-slip rubber sleeve.