CN200958614Y

CN200958614Y - Four-dimensional and eccentric sealed butterfly valve

Info

Publication number: CN200958614Y
Application number: CN 200620093589
Authority: CN
Inventors: 黄一立
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-10
Filing date: 2006-10-10
Publication date: 2007-10-10
Anticipated expiration: 2016-10-10

Abstract

This utility model related to a four-dimension four eccentric sealing butterfly valve, including a valve body, a valve shaft, a valve plate, a lamination sheet and a butterfly plate combination consisted of a valve plate pressing ring, the butterfly plate combination is installed in the valve body and fixed on the valve shaft with a pin; a stuffing box is installed on the upper part of valve body, the stuffing box is equipped with a bracket which is equipped with a driving device; the valve plate adopts a four-dimension four eccentric structure, which is fixed on four sides of the valve seat, the side a, side b, side c and side d of the inclined dimension valve seat are set together correspondingly with side a1, side b1, side c1 and side d1 of the inclined dimension lamination sheet of valve plate according to combined position, to become a sealing structure; after combination is completed, the sealing angle Alpha of c-c1 is 2 degree, and this angle is a design angle. This utility model butterfly valve is provided with a rational structure, a small volume, a light weight, accurate on off positioning, long service life and low manufacturing cost. Meanwhile, this utility model is high pressure proof, high temperature proof and corrosion proof, the scope of applied temperature is wide, which is especially suitable for on-off use on large-diameter pipeline.

Description

A kind of four-dimensional four eccentric sealed butterfly valves

One, technical field: the utility model relates to a kind of seal butterfly valve, the seal butterfly valve of four-dimensional four off-centre of particularly a kind of four-dimensional four eccentric sealed butterfly valves.

Two, background technique: butterfly valve is the developing direction of the valve that uses on the large diameter pipeline, but existing reed valve exists the butterfly plate structure single, can not align, can not compensate, shortcoming such as intensity is low, most of sealing material on the valve adopts the macromolecular material manufacturing, not heatproof, not withstand voltage, not friction durability low, be difficult to enlarge using scope, the patent No. that the inventor has authorized the butterfly valve of three-dimensional three eccentric structures that has been 99243242.1 and 99250351.5 patent disclosure, but there are shortcomings such as compensation effect is bad, sealing is not enough in they.

Three, summary of the invention:

1, goal of the invention: the utility model provides a kind of four-dimensional four eccentric sealed butterfly valves, and the butterfly plate structure that its purpose is to solve existing butterfly valve is single, can not align, can not compensate, intensity is low, the problem that exists of heatproof, aspect such as not withstand voltage, not wear-resisting not.

2, technological scheme: the utility model is achieved through the following technical solutions:

A kind of four-dimensional four eccentric sealed butterfly valves comprise the butterfly plate combination that valve body, valve shaft, valve plate, lamination, valve plate trim ring are formed, and the butterfly plate combination is contained in the valve body, with dowel fixes on valve shaft, Stuffing box is located at the top of valve body, and support is housed on the Stuffing box, and driving mechanism is housed on the support; It is characterized in that: valve plate is four-dimensional four eccentric structures, the valve plate of four-dimensional four eccentric structures and the valve seat of valve body are located on four sides, promptly tiltedly a, b, c, the d face of dimension valve seat become sealing configuration with four sides a ', b ', c ', the d ' that valve plate is tiltedly tieed up lamination by corresponding being set together of block position, the sealing angle [alpha] of combination back c-c ' is 2 °, and this fixed angle is constant to be design angle.

Four perpendicular sections of 360 ° of sections of the valve seat of valve plate and valve body and valve shaft all are tilted conical surfaces, b-b ', d-d ' angle symmetry and identical wherein, a-a ' angle is in 16 °～24 ° scopes, and with the valve aperture size variation, it is 2 ° that c-c ' angle [alpha] immobilizes.

Four above-mentioned eccentric structures are: 1.. valve seat center and valve shaft center off-centre; 2.. valve body plane and valve shaft center off-centre; 3.. center, valve plate hole and valve seat center off-centre; 4.. lamination 14 and valve seat tapered centre off-centre.

3, advantage and effect: by the enforcement of technical solutions of the utility model, the valve board structure that can solve existing butterfly valve well is single, can not align, can not compensate, intensity is low, the problem that exists of heatproof, aspect such as not withstand voltage, not wear-resisting not.Four-dimensional four eccentric-butterfly-valves of the utility model are rational in infrastructure, applied widely, life-span length, zero leakage, cost are low relatively, easy for installation, and the up-to-standard rate height greatly reduces installation cost.

The design and fabrication technology of the utility model butterfly valve belongs to leading in the world, is that update product has very important meaning, and it has the economical with materials resource, and the protection environment belongs to green product.It is a kind of novel butterfly valve product of on the basis of inventor's former patent " 99243242.1 " and " 99250351.5 ", developing, its switch under the transmission of manual, electronic, pneumatic, hydraulic actuator is rapid, the valve plate half-twist can reach the switch purpose, it is the developing direction of optimal valve, especially large diameter pipeline in the pipeline.

Butterfly valve structure of the present utility model is simple, rationally, guarantee that at 360 ° of scope inner conical sealing surfaces the pressure minimum angle is greater than friction angle between valve plates and the valve pad, do not have friction relatively, thereby guarantee that its life-span is that like product is more than four times, owing to the 3rd off-centre, the 4th wobbler action, produce obvious cam action, but the self-locking self-tightening again can the asymptotic expression self compensation, remains zero sealing state, not clamping, flexible operation, reliable, Stuffing box is designed to bilayer, reaches self compensation, does not have leakage, freedom from repairs.Parts such as the design's valve body, valve plate all adopt metallic material to make, sealing surface adopts high strength alloy, thereby has withstand voltage, heatproof, corrosion-resistant, and its Applicable temperature is extensive, its volume is little, in light weight, Applicable scope is extremely wide, is specially adapted to use as switch on the heavy caliber pipeline.

Four, description of drawings: accompanying drawing 1 is the first eccentric structure schematic representation in the utility model erection drawing;

Accompanying drawing 2 be in the utility model erection drawing second, third, the 4th eccentric structure schematic representation;

Accompanying drawing 3 is the four-dimensional structural representation that the utility model valve plate cooperates with valve seat;

Accompanying drawing 4 opens and closes the structural representation at attached angle for the utility model.

Five, embodiment:

Below in conjunction with accompanying drawing the utility model is described in detail as follows.

Among the figure: 1, valve seat; 2, taper pin; 3, valve plate; 4, support; 5, Gland; 6, gland stud; 7, gland stud cap; 8, connecting key; 9, valve shaft; 10, Stuffing box; 11, support bracket bolt; 12, support bracket bolt cap; 13, first off-centre; 14, lamination; 15, valve plate trim ring; 16, bolt; 17, metal ring; 18, second off-centre; 19, the 3rd off-centre; 20, the 4th off-centre; 21, corrosion resistant plate; 22, pad.

Embodiment 1:

As shown in Figure 1, this practicality newly is a kind of four-dimensional four eccentric sealed butterfly valves, it comprises the butterfly plate combination that valve body 1, valve shaft 9, valve plate 3, lamination 14, valve plate trim ring 15 are formed, the butterfly plate combination is contained in the valve body 1, is fixed on the valve shaft 9 with pin 2, and Stuffing box 10 is located at the top of valve body 1, in the Stuffing box 10 graphite packing is housed, guarantee permanent seal, support 4 is housed on the Stuffing box 10, on the support 4 driving mechanism is housed; Valve plate 3 is four-dimensional four eccentric structures, the valve plate 1 of four-dimensional four eccentric structures is located on four sides with the valve seat of valve body 1, promptly tiltedly a, b, c, the d face of dimension valve seat become sealing configuration with four sides a ', b ', c ', the d ' that valve plate is tiltedly tieed up lamination by corresponding being set together of block position, see Fig. 3, guaranteed sealing stability, increased sealing area, the sealing angle of combination back c-c ' is 2 °, this fixed angle is constant to be design angle, sees Fig. 4.

360 ° of the valve seat sections of valve plate 3 and valve body 1 and valve shaft 9 four perpendicular sections all are tilted conical surfaces, wherein b-b ', d-d ' angle are symmetrical, a-a ' angle is in 16 °～24 ° scopes, and with the valve aperture size variation, it is 2 ° that c-c ' angle [alpha] immobilizes.

As shown in Figure 2, four above-mentioned eccentric structures are: 1.. valve seat center and valve shaft center off-centre 13; 2.. valve body plane and valve shaft center off-centre 18; 3.. center, valve plate hole and valve seat center off-centre 19; 4.. lamination 14 and valve seat tapered centre off-centre 20.The geometric parameter of four-dimensional four off-centre can change according to model, the specification of valve needs, and the valve plate lamination is to be composited by multilayer alloy and graphite, and the metal ring 17 that divided ring is made up of two semicircle types plays the role of positioning.

The design and fabrication technology of four-dimensional four eccentric-butterfly-valves belongs to leading in the world, be that update product has very important meaning, it is a kind of novel butterfly valve product of developing on former 992432421,992503515 patented technology bases, its switch under the transmission of manual, electronic, pneumatic, hydraulic actuator is rapid, and the valve plate half-twist can reach rapid switching purposes.

Embodiment 2:

Make the four-dimensional four eccentric sealed butterfly valves of a playscript with stage directions model utility, its bore is that DH300, PN1.6MP3 design principle are seen Fig. 1, wherein the first eccentric value is 39.75 ± 0.1, the second eccentric value is that the 105 ± 0.1, the 3rd eccentric value is that the 40.25 ± 0.1, the 4th eccentric value is 4.42 ± 0.1, see that from Fig. 31 dimension a point angle is 22 °, 2 dimension b point angles are 11 ° of .30 ', and 3 dimension c point angle [alpha] are 2 °, and 4 dimension d point angles are 11 ° of .30 '.Elder generation is with valve plate 3 and lamination 14, valve plate trim ring 15 during assembling, with bolt 16 these three parts mounts are formed the butterfly plate combination, again with butterfly plate combination and valve shaft 9, be installed on the valve seat, taper pin 2 forms a whole valve shaft, valve plate, with filler 10, be contained in the Stuffing box 10, refill Gland 5, hold-down bolt refills support 4, load onto connecting key 8, load onto driving mechanism, determine model be 3D-30/250 the utility model valve according to actual needs, in use can adopt manual, electronic, pneumatic, the mode of surging to operate.

Claims

1, a kind of four-dimensional four eccentric sealed butterfly valves, comprise the butterfly plate combination that valve body (1), valve shaft (9), valve plate (3), lamination (14), valve plate trim ring (15) are formed, the butterfly plate combination is contained in the valve body (1), be fixed on the valve shaft (9) with pin (2), Stuffing box (10) is located at the top of valve body (1), support (4) is housed on the Stuffing box (10), and support is equipped with driving mechanism on (4); It is characterized in that: valve plate (3) is four-dimensional four eccentric structures, the valve plate (1) of four-dimensional four eccentric structures is located on four sides with the valve seat of valve body (1), promptly tiltedly a, b, c, the d face of dimension valve seat become sealing configuration with four sides a ', b ', c ', the d ' that valve plate is tiltedly tieed up lamination by corresponding being set together of block position, the sealing angle [alpha] of combination back c-c ' is 2 °, and this fixed angle is constant to be design angle.

2, four-dimensional four eccentric sealed butterfly valves according to claim 1, it is characterized in that: four perpendicular sections of 360 ° of the valve seat sections of valve plate (3) and valve body (1) and valve shaft (9) all are tilted conical surfaces, 2-2 ', 4-4 ' angle symmetry and identical wherein, a-a ' angle is in 16 °～24 ° scopes, with the valve aperture size variation, it is 2 ° that c-c ' angle [alpha] immobilizes.

3, four-dimensional four eccentric sealed butterfly valves according to claim 1, it is characterized in that: four above-mentioned eccentric structures are: 1.. valve seat center and valve shaft center off-centre (13); 2.. valve body plane and valve shaft center off-centre (18); 3.. center, valve plate hole and valve seat center off-centre (19); 4.. lamination 14 and valve seat tapered centre off-centre (20).