CN2044309U

CN2044309U - Digit adjustable butlerfly valve

Info

Publication number: CN2044309U
Application number: CN 88221190
Authority: CN
Inventors: 张国臣
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-12-22
Filing date: 1988-12-22
Publication date: 1989-09-13

Abstract

The digit adjustable butterfly valve of the utility model is an operating mechanism in industrial automatization control system and is widely used for the adjustment and remote control in the field of industrial automatization control. The digital adjustable butterfly valve is structurally characterized in that a butterfly valve is driven through the transmission of a harmonic gear speed reducer; the butterfly valve comprises rotary valves such as a ball valve, a flex valve, etc.; the digit adjustable butterfly valve is especially suitable for the control of an electronic computer for the ring opening adjustment and ring closing adjustment of a system so as to ensure the stable program change of parameters such as the flow quantity of the system, the pressure of the system, the temperature of the system, etc.; the utility model has the advantages of adjustment, sealing, etc.

Description

Digit adjustable butlerfly valve

The utility model relates to the actuator in a kind of industrial automation control system, and particularly a kind of digital quantity is regulated butterfly valve.

The digital quantity modulating valve of publishing in technical field of industrial automatic control is acquired another Chinese patent of the applicant " digital quantity electric flow control valve ", the straight line motion modulating valve that this valve system of ZL85204355 is made up of stepping motor, ball screw pair and two-seater valve, adjusting function is good, precision is high, but can not realize the pipe-line system sealing of damming fully.

The purpose of this utility model provides the modulating valve that a kind of implementation of directly accepting the digital quantity signal that electronic computer sends rotatablely moves, it can not only be delicately, accurately realize regulating, and pipe-line system is dammed reach sealing reliably.

Structural feature of the present utility model is with the stepping motor device that is used as power, harmonic gear reducer is made transmission device, butterfly valve (or changeover valves such as ball valve, deflection valve) is done actuator, make full use of the speciality of three kinds of mechanisms, lump together its three is gentle dexterously, constitutes a structure that is suitable for the complete novelty of practicality.

Its advantage:

1, owing to adopt the stepping motor device that is used as power, therefore can directly accept the digital quantity signal that electronic computer sends, flowing mediums such as the gas of pipe-line system, liquid, steam are carried out open loop and closed-loop adjustment.

2, since adopt motion than the harmonic gear reducer big, that bearing capacity is strong, transmission accuracy good, transmission efficiency is high as transmission device, so the degree of regulation height, advance little, the reliable operation of backhaul difference.

3, owing to adopt butterfly valve (comprising changeover valves such as ball valve, deflection valve) to do actuator, therefore can regulate and the sealing of damming, a valve is dual-purpose, simplifies pipe-line system.

Figure of description is the complete section plan view of one of the utility model instantiation, and bottom is described further the utility model in conjunction with the accompanying drawings.

1 valve housing, 2 seal rings

3 driven axles, 4 valve inlets

5 valve input shafts, 6 seal rings

7 screws, 8 harmonic gear reducer housings

9 screws, 10 flexbile gears

11 keys, 12 cam harmonic generators

13 screws, 14 slim bearings

15 have just taken turns 16 stepping motor housings

17 bearings, 18 stepping motor output shafts

19 stators, 20 rotors

21 bonnets, 22 lighting outlets

23 screws, 24 keys

The 26 fluoroplastic soft seals of 25 valve bases

27 valve discs, 28 valve exports

29 limiting stoppers, 30 keys

31 screws

Digital quantity adjusting butterfly valve is made up of butterfly valve, harmonic gear reducer and three kinds of mechanisms of stepping motor, and the butterfly valve part is made up of valve housing 1, valve base 25, valve disc 27, valve inlet 4, valve export 28, valve input shaft 5, key 24, limiting stopper 29, driven axle 3 and

seal ring

2,6; Harmonic gear reducer is by harmonic gear reducer housing 8, flexbile gear 10, key 11, cam harmonic generator 12, slim bearing 14 and just taken turns 15 and formed; Stepping motor is made up of stepping motor housing 16, bearing 17, stepping motor output shaft 18, stator 19, rotor 20, bonnet 21 and lighting outlet 22.

Stepping motor housing 16, harmonic gear reducer housing 8 and valve housing 1 all should have good coaxality and tight the cooperation, are fastenedly connected with screw 7,23 respectively then, and it is become one.Stepping motor output shaft 18 is coaxial with the harmonic gear reducer input shaft, and the harmonic gear reducer output shaft is coaxial with valve input shaft 5, and the diaxon rotating center point-blank.

This digital quantity is regulated butterfly valve can be by various model electronic computer controls such as APPLE-II, TP801.Electronic computer sends pulse signal, through after the power amplification, enter stepping motor by lighting outlet 22, under the rotating magnetic field effect, stepping motor rotor 20 rotates, and the cam harmonic generator 12 that is connected on the stepping motor output shaft 18 with key 11 rotates thereupon, forces flexbile gear 10 to produce resiliently deformable, and make its tooth and the tooth interaction of wheel 15 just, transmit and rotate and power.At this moment, flexbile gear 10 the other ends rotate with screw 9 fixing valves discrepancy axles 5.Valve disc 27 has two ears or side handles of a utensil, ears or side handles of a utensil are fixing with valve input shaft 5 with key 24, make it to rotate with axle, another ears or side handles of a utensil are fixing with driven axle 3 with key 30, there are 90 ° of projections the exterior edge face of driven axle 3, it matches with the limiting stopper 29 that 180 ° of projections are arranged at interior edge face, and restriction valve disc 27 can only rotate in 90 °.4 screws 31 of limiting stopper 29 usefulness are fixed on the valve housing 1.

Flowing medium enters from valve inlet 4, valve base 25 inner chambers of flowing through, flow out from valve export 28, because valve disc 27 rotatablely moving in valve base 25 inner chambers are made 90 ° of scopes, cause the inner chamber standard-sized sheet, turn down or totally-enclosed, when all sealing the periphery of valve disc 27 and the fluoroplastic soft seal 26 that is set in valve base 25 inboards near and produce tight seal.This promptly changes flow area generation changes in flow rate, reaches to regulate flow and seal fully to dam.

Claims

1, digital quantity adjusting butterfly valve comprises that stepping motor, harmonic gear reducer and butterfly valve (comprising changeover valves such as ball valve, deflection valve) is characterized in that:

Both rotating centers of a, stepping motor rotor 20 and valve disc 27 point-blank.

On b, the valve base 25 fluoroplastic soft seal 26 is arranged, valve disc 27 is at valve base 25 inner chamber half-twists, from the standard-sized sheet to the sealing.

2, regulate butterfly valve according to the described digital quantity of claim 1, it is characterized in that stepping motor housing 16, harmonic gear reducer housing 8 and valve housing 1 have good coaxality, and link into an integrated entity with screw 7,23.Stepping motor output shaft 18 is coaxial with the harmonic gear reducer input shaft, and the harmonic gear reducer output shaft is coaxial with valve input shaft 5, and the diaxon rotating center point-blank.

3, regulate butterfly valve according to the described digital quantity of claim 1, it is characterized in that stepping motor output shaft 18 rotor 20 and cam harmonic generator 12 rigid joint, valve input shaft 5 is flexbile gear 10 and valve disc 27 rigid joint.

4, regulate butterfly valve according to the described digital quantity of claim 1, it is characterized in that valve disc 27 has two ears or side handles of a utensil, ears or side handles of a utensil are fixing with valve input shaft 5 with key 24, another ears or side handles of a utensil are fixing with driven axle 3 with key 30, there are 90 ° of projections the exterior edge face of driven axle 3, it matches with the limiting stopper 29 that 180 ° of projections are arranged at interior edge face, and limiting stopper 29 usefulness screws 31 are fixed on the valve housing 1.