CN2277468Y

CN2277468Y - Nylon valve with metal frame for ues in butterfly valve

Info

Publication number: CN2277468Y
Application number: CN 96243682
Authority: CN
Inventors: 钱耀清; 夏军; 虞红进
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-18
Filing date: 1996-10-18
Publication date: 1998-04-01
Anticipated expiration: 2006-10-18

Abstract

The utility model relates to a nylon valve plate with metal frame, which is used for butterfly valve. The utility model is characterized in that the valve plate comprises double-layer structure which comprises a surface layer and a frame, wherein, the surface layer is food class nylon; the frame is metal. The utility model has the advantages of no toxicity, sanitation, good chemical stability, low friction coefficient, good sealing performance and long service life.

Description

The nylon valve plate that is used for butterfly valve with metal frame

The utility model relates to the valve element, particularly a kind of nylon valve plate with metal frame that is used for butterfly valve.

Butterfly valve---also claim fly valve, be widely used in waterworks, oil, chemical industry equipment, in the pipelines such as food machinery, ducted fluid is opened or closed control.Valve plate has important function in butterfly valve, drive (as electronic, pneumatic, manual etc.) rotating shaft rotation by external force, and rotating shaft is passed to valve plate by connection set with power, and valve plate rotates and can realize control to ducted fluid.Domestic traditional valve plate is all made by metal at present, chrome-faced or paint, and valve seat generally adopts rubber to make, and these two kinds of web shaped material are furnished with following deficiency: (one) paint or other overlay coatings have toxicity, do not meet sanitary standard in industries such as tap water, beverage, food, medicine; (2) the metal valve plate is surperficial perishable and rough, during rotation in addition can scratch valve seat, friction ractor is big between metal and the rubber, then starting torque is big; (3) the metal valve plate is a rigid material, and rubber valve seat is flexible, elastic material, and both cooperate rotation to cause the prooving of valve seat easily, influence the sealing and the working life of butterfly valve.

The purpose of this utility model provide a kind of nontoxic, meet sanitary standard; Chemical stability is good, corrosion-resistant; Little, the energy efficient of friction ractor; The nylon valve plate that is used for butterfly valve of favorable sealing property, long service life with metal frame.

The purpose of this utility model can be achieved through the following technical solutions: be used for the nylon valve plate with metal frame of butterfly valve, its structural feature is that this valve plate is the double layer construction that comprises top layer and skeleton, and the top layer is a food-grade nylon, and skeleton is a metal.

The purpose of this utility model can also be further perfect by the following technical programs, and described valve plate also can be a three-decker, and the top layer is a food-grade nylon, and skeleton is a metal, is the arene composite layer between top layer and the skeleton.

To and contrast accompanying drawing by embodiment below is described in detail the utility model.

Fig. 1 is a main sectional view of the present utility model.

Fig. 2 is the plan view of Fig. 1.

Fig. 3 is another embodiment's of the utility model a main sectional view.

As shown in Figure 1, 2, the skeleton 2 of described valve plate adopts metallic material, center hole is the rotating shaft mounting hole, connect with connection set between rotating shaft and the valve plate, food-grade nylon 11 powder is selected on top layer 1 for use, cover the outside of metal frame 2 equably with technologies such as electrostatic spraying or fluidized bed dippings, the THICKNESS CONTROL on top layer 1 is at 0.15-0.40mm+10%.

The utility model also can be a three-decker (as shown in Figure 3), promptly also has one deck arene composite layer 3 between the top layer 1 of nylon 11 and metal frame 2.

The adhesion of nylon 11 and metal is one-level, impact strength is 1Kg.m (20 ℃ time), specific elongation is 95%, and wear resistance is 6 times of copper, and chemical stability is good, to most of nonpolar solvent (as hydro carbons, lipid, lower alcohols) chemical reaction not, operating temperature between-40 ℃-110 ℃, sea water resistance 6 years, anti-boiling water 2000 hours, salt tolerant needs 2000 hours, can tan by the sun 7 years outdoor.

The utility model compared with prior art also has the following advantages and good effect:

(1) the mechanical intensity that had both kept former metal valve plate to have has increased again the various excellent of top layer nylon The point;

(2) no toxicity is so that the operation of the industries such as urban water and beverage, food, medicine meets the health mark Accurate;

(3) valve plate smooth surface, and the friction coefficient between the valve seat is little, it is little then to start moment, has saved energy Consumption;

(4) because the top layer of valve plate has applied nylon, reduce the rigidity of virgin metal spare, cooperated closelyr with the valve seat of rubber system, increased sealability, prolonged the working life of butterfly valve.

Claims

1, a kind of nylon valve plate with metal frame that is used for butterfly valve, it is characterized in that: this valve plate is the double layer construction that comprises top layer (1) and skeleton (2), and top layer (1) is food-grade nylon, and skeleton (2) is a metal.

2, the nylon valve plate that is used for butterfly valve as claimed in claim 1 with metal frame, it is characterized in that: described valve plate is a three-decker, top layer (1) is a food-grade nylon, and skeleton (2) is a metal, is arene composite layer (3) between top layer (1) and the skeleton (2).