CN209083931U - A kind of flange butterfly lower margin - Google Patents

Abstract

The utility model relates to a kind of flange butterfly lower margins, in particular to butterfly valve apparatus field.The utility model includes valve flange, lower margin there are two being set on valve flange, lower margin is mainly made of bottom plate, lower margin fixing threaded hole, support plate, connection reinforcement gusset between two pieces of support plates, four blocks of bonding are additionally provided on lower margin, bonding is equipped with the mounting hole for being fixedly connected with lower margin and valve flange, and valve flange is equipped with counterbore corresponding with mounting hole size.The support lower margin that the utility model overcomes valve in the prior art is directly welded on valve body, the disadvantage that this welding manner causes production efficiency too low.Lower margin is supported on butterfly valve body flange by the utility model, and drilling is indirectly attached to lower margin on valve body on flange, and lower margin is made into general part, is reduced production cost, is improved production efficiency, increases economic benefit.

Description

A kind of flange butterfly lower margin

Technical field

The utility model relates to butterfly valve apparatus field, in particular to a kind of flange butterfly lower margin.

Background technique

Butterfly valve is called flap valve, is mainly made of valve body, valve rod, butterfly valve, butterfly plate and sealing ring, is the last century 30's American invention, the fifties is incoming Japanese, and is the thing in the seventies in China's popularization.Butterfly valve have small in size, installation space is small, Light-weight, switch rapidly, 90 ° of reciprocating rotatings the features such as, for stage, connection, adjust the long medium of pipeline, there is stream well Body control characteristic and closing milling performance.Butterfly valve from central symmetry butterfly valve at first to single eccentric-butterfly-valve, double eccentric butterfly valve again to Later three-eccentric-butterfly-valve, always continuous development.

Butterfly valve has extensive utilization in every field.Particular condition in use has vertical and horizontal, pipeline in the duct for it Usually require that valve there will be support lower margin support in installation, generally use method at present is all that lower margin is directly welded in valve body On.And according to the utility model patent of patent No. CN201517620.1 " a kind of flange butterfly of lower margin position changeable ", mainly Using forging type, four lower margin angles of casting and forming in shape are needed, casting elongation percentage is lower.When vertical installation, only use It is installed to two lower margin angles, other two lower margin angle can become extra, similarly, in horizontal installation there is also this problem, add Work only uses when installing to two lower margin angles, can generate extra lower margin angle after the completion, and integral (type) flange butterfly valve and lower margin angle are Casting is made and can not process to shape, is easy to influence the aesthetics of flange butterfly in this way, when such flange butterfly output Will cause when big extra lower margin angle section material and the wasting of resources, however it remains technical defect, therefore have to be solved.

Utility model content

(1) technical problems to be solved

The support lower margin that the utility model overcomes valve in the prior art is directly welded on valve body, this welding side The disadvantage that formula causes production efficiency too low.The utility model will provide one kind and be easily installed to solve the technical problem and tear open Unload, reduce the flange butterfly lower margin of production cost.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides such a flange butterfly lower margin, including valve body method Orchid, the side semi arch edge both ends of the valve flange are respectively equipped with a lower margin, the lower margin mainly by a piece of bottom plate and Two pieces of support plates being vertically located on the bottom plate form, and one piece of stiffener plate, two pieces of institutes are connected between two pieces of support plates The distance for stating support plate is consistent with the spacing of two valve flange of the same end, and four blocks of bonding, the bonding are additionally provided on the lower margin It is fixed in the support plate by welding, the bonding is equipped with for being fixedly connected with the lower margin and the valve body The mounting hole of flange, the valve flange are equipped with counterbore corresponding with the mounting hole size, the valve flange and described Bonding is fixed by hexagon socket cap head screw, and the valve flange and the support plate are clearance fit, the support plate with The contact surface of the valve flange is arc surface, and the outer diameter of the circular arc radius surface and the valve flange is in the same size.

Preferably, the bottom plate, the stiffener plate and the support plate are steel plate and pass through between each other Welding manner is fixedly connected.

Preferably, the quantity of the counterbore is consistent with the quantity of the mounting hole, is four.

Preferably, the depth of the counterbore is greater than the height of the hexagon socket cap head screw screw head.

Preferably, lower margin fixing threaded hole there are two being set on the bottom plate.

(3) beneficial effect

The support lower margin that the utility model overcomes valve in the prior art is directly welded on valve body, this welding side The disadvantage that formula causes production efficiency too low.Compared with the existing technology, butterfly valve can be installed the utility model by having the advantage that Lower margin is made into general part, in the case where same pressure and bore, can be applicable in a lower margin, save significantly in the manufacturing About working hour, the utility model is made not by the mode of casting, does not also need lower margin is arranged on original valve flange Angle, the utility model only needs directly to drill out counterbore on valve flange under customer requirement to be matched with the mounting hole on bonding, And by the welding of bonding and lower margin to fixed lower margin and valve flange, to reduce the waste of material.In practice operation Learn: originally the lower margin on a valve is welded needs 3 ~ 4 hours by a welder, and is only needed using the utility model 1 small When can install butterfly valve lower margin.It can be seen that the utility model can reach reduce production cost, improve production efficiency, Increase the purpose of economic benefit.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model flange butterfly lower margin；

Fig. 2 is the side view (partial sectional view) of Fig. 1；

Fig. 3 is the lower margin structural schematic diagram equipped with bonding；

Fig. 4 is the lower margin structural side view without bonding；

Fig. 5 is the top view of Fig. 4.

Appended drawing reference are as follows: 1. valve flanges, 11. counterbores, 2. hexagon socket cap head screws, 3. bonding, 31. mounting holes, 4- Support plate, 5. bottom plates, 6. stiffener plates, 7. lower margin fixing threaded holes, 8. lower margins.

Specific embodiment

The utility model is further described in conjunction with the accompanying drawings and embodiments.

In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "vertical", "horizontal", The orientation or positional relationship of the instructions such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside" be based on Orientation or positional relationship shown in the drawings is merely for convenience of description the utility model, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

As shown in Figs. 1-5, a kind of flange butterfly lower margin described in the utility model, including valve flange 1, the valve body method The side semi arch edge both ends of orchid 1 are respectively equipped with a lower margin 8, and the lower margin 8 is mainly located at institute by a piece of bottom plate 5 and vertically Two pieces of support plates 4 composition on bottom plate 5 is stated, connects one piece of stiffener plate 6, two pieces of supports between two pieces of support plates 4 The distance of plate 4 is consistent with the spacing of two valve flange 1 of the same end, and four blocks of bonding 3 are additionally provided on the lower margin 8, and the bonding 3 is logical The mode for crossing welding is fixed in the support plate 4, and the bonding 3 is equipped with for being fixedly connected with the lower margin 8 and the valve The mounting hole 31 of body flange 1, the valve flange 1 are equipped with counterbore 11 corresponding with 31 size of mounting hole, the valve body Flange 1 and the bonding 3 are fixed by hexagon socket cap head screw 2, and the valve flange 1 and the support plate 4 are matched for gap It closes, the contact surface of the support plate 4 and the valve flange 1 is arc surface, the circular arc radius surface and the valve flange 1 Outer diameter is in the same size.

In order to effectively improve the support function of lower margin, the utility model further include: 5, one pieces of institutes of bottom plate described in one piece The stiffener plate 6 stated is steel plate with support plate 4 described in two pieces and is fixedly connected between each other by welding manner；Described Counterbore 11 is consistent with the quantity of the mounting hole 31, and a lower margin 8 is correspondingly arranged at described in four on the valve flange 1 Counterbore 11；The depth of the counterbore 11 is greater than the height of 2 screw head of hexagon socket cap head screw；The bottom plate 5 On set there are two lower margin fixing threaded hole 7.

The installation process of the utility model are as follows: first by lower margin according to pipeline center's height, foundation bolt specification and foundation bolt Distribution designs, then lower margin is supported on butterfly valve body flange 1, is bored on the corresponding bonding 3 of two counterbores 11 on valve flange 1 Mounting hole 31, bonding 3 is welded on by welding on lower margin 8, passes through interior hexagonal circle between bonding 3 and valve flange 1 Chapiter screw 2 is tightened, and lower margin 8 is mainly made up of a bottom plate 5 and two pieces of support plates 4, and one piece is equipped between two pieces of support plates 4 Stiffener plate 6, four plates are formed by connecting by welding manner, and wherein support plate 4 and 1 contact portion of valve flange are arc surface, The radius of circular arc and the outer diameter of valve flange 1 are in the same size, and it is consistent that the distance between two pieces of support plates 4 and valve flange 1 open shelves, Two pieces of support plates 4 are the inside for being located at two sides valve flange 1, and the lifting lug being arranged in the utility model is also by welding Mode is connected on valve flange 1, and lifting lug can be added according to the requirement of client or not added.

The utility model can be adapted for vertical valve body and horizontal valve body, and Fig. 1 is that this lower margin and valve body installation example are (sleeping Formula), it is vertical it is identical no longer go out scheme, referring in particular to Fig. 1.

Embodiment described above is only expressed to the preferred embodiments of the present invention, and description is more specific and detailed Carefully, but the utility model is not limited only to these embodiments, it is noted that for those of ordinary skill in the art. Under the premise of without departing from the utility model aims, carried out by any improvement all fall within the protection scope of the utility model. Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (5)

1. a kind of flange butterfly lower margin, including valve flange (1), it is characterised in that: the side semi arch of the valve flange (1) Edge both ends are respectively equipped with a lower margin (8), and the lower margin (8) is mainly located at the bottom plate (5) by a piece of bottom plate (5) and vertically On two pieces of support plates (4) composition, one piece of stiffener plate (6), two pieces of support plates are connected between two pieces of support plates (4) (4) distance is consistent with the spacing of two valve flange of the same end (1), and four pieces of bonding (3) are additionally provided on the lower margin (8), described Bonding (3) is fixed on by welding on the support plate (4), and the bonding (3) is equipped with described for being fixedly connected The mounting hole (31) of lower margin (8) and the valve flange (1), the valve flange (1) are equipped with big with the mounting hole (31) Small corresponding counterbore (11), the valve flange (1) and the bonding (3) are fixed by hexagon socket cap head screw (2), described Valve flange (1) and the support plate (4) are clearance fit, and the support plate (4) and the contact surface of the valve flange (1) are The outer diameter of arc surface, the circular arc radius surface and the valve flange (1) is in the same size.

2. a kind of flange butterfly lower margin according to claim 1, it is characterised in that: the bottom plate (5), the reinforcement Gusset (6) is steel plate with the support plate (4) and is fixedly connected between each other by welding manner.

3. a kind of flange butterfly lower margin according to claim 1, it is characterised in that: the quantity of the counterbore (11) and institute The quantity for stating mounting hole (31) is consistent, is four.

4. a kind of flange butterfly lower margin according to claim 1 or 3, it is characterised in that: the depth of the counterbore (11) Greater than the height of the hexagon socket cap head screw (2) screw head.

5. a kind of flange butterfly lower margin according to claim 1, it is characterised in that: there are two being set on the bottom plate (5) Lower margin fixing threaded hole (7).