SU983364A1

SU983364A1 - Butterfly-type valve

Info

Publication number: SU983364A1
Application number: SU813247227A
Authority: SU
Inventors: Николай Иванович Гречихин; Анатолий Григорьевич Кондратьев; Борис Ечейвич Югай
Original assignee: Всесоюзное Научно-Производственное Объединение "Радуга"
Priority date: 1981-02-13
Filing date: 1981-02-13
Publication date: 1982-12-23

Description

Изобретение относитс к арматуростроению и может быть использовано в качестве запорно-распределительной арматуры на оросительных системах. . The invention relates to valves and can be used as valves for irrigation systems. .

.Известно уплотнение дроссельной заслонки, в корпусе которой установлено резиновое седло и дисковый затвсф . Между корпусом и седлом образрвана кольцева полость. На корпусе заслонки установлен золотник с трем выполненныг и в гильзе каналами, два крайних из которых св заны с трубопроводе, а средний - с кольцевой полостью Г1 .. It is known to seal the throttle valve, in the case of which a rubber seat and a disk valve are installed. Between the body and the saddle there is an annular cavity. On the valve body there is a spool with three made and in the sleeve channels, two extreme of which are connected with the pipeline, and the middle one with the annular cavity G1.

Недостатком данной конструкции вл етс то, что поворотный вал проходит через манжету, при этом понижаетс надежность конструкции. Кроме того, дл разгерметизации диска перед моментом открыти необходимо дополнительное устройство дл переключени золотника.The disadvantage of this construction is that the rotating shaft passes through the collar, thus reducing the reliability of the design. In addition, to depressurize the disc before opening, an additional device for switching the valve is needed.

Наиболее близкой к изобретению по технической сущности вл етс конструкци поворотной заслонки, с установленным на оси, св занной с приводным валом, дисковым запорным органом с уплотнительной манжетОй, образующей с поверхностью канавки,Closest to the invention to the technical nature is the design of the rotary valve, mounted on an axis connected to the drive shaft, a disc valve with a sealing lip, forming a groove with the surface,

в которой она расположена, полость управлени , снабженным распределительным устройством, образованным осью с выполненными в ней каналами и установленным клапаном 2J.in which it is located, the control cavity, equipped with a distribution device, formed by an axis with channels made in it and mounted with a valve 2J.

Недостатками известной конструкции вл ютс повышенный выброс транспортируемой среды в атмосферу, значительный износ уплотнительной ман10 жеты, что снижает надежность заслонки .The disadvantages of the known construction are the increased release of the transported medium into the atmosphere, a significant wear of the sealing ring 10, which reduces the reliability of the flap.

Целью изобретени вл етс повышение надежности.The aim of the invention is to increase reliability.

Указанна цель достигаетс тем, This goal is achieved by

15 что распределительное устройство образовано нижней ч.астью приводного вала с боковой выемкой, выполненной с возможностью поочередного сообщени полости управлени манжеты с по20 лост ми корпуса и атмосферой, причем в приводном валу выполнен радиальный паз, а ось снабжена штифтом, установленным с возможностью взаимодействи с пазом вала.15 that the distribution device is formed by the lower part of the drive shaft with a lateral recess made with the possibility of alternately communicating the control cavity of the cuff with body parts and the atmosphere, with the radial groove in the drive shaft, and the axis is provided with a pin installed with the possibility of engagement with the groove shaft.

2525

На фиг. 1 представлена заслонка, общий вид; на фиг. 2 - разрез А-Л на фиг. 1; на фиг. 3 - разрез Б-Б . на фиг,1.FIG. 1 shows the flap, general view; in fig. 2 is a section A-L in FIG. one; in fig. 3 - section BB. in FIG. 1.

Заслонка состоит из корпуса 1, The flap consists of body 1,

Claims

Disk 30: 2, which is sealed 43 in a closed position controlled by a elastic cuff 3 and mounted eccentrically on two semi-axes 4 and 5, the semi-axis 4 is kinematically connected through a drive shaft b to a valve made in the form of a three-way valve. The cuff 3 is made with a constant cross section along the entire circumference of jHOCTH and is located in a radial annular protrusion 7 displaced by the amount of eccentricity of the disk, having tangential grooves 8 in the upper and lower parts of the protrusion. The valve of the distributor is the lower part of the drive valve 6 with the lateral notch 9 on the surface 1/3 + d of the circumference, where d is the diameter of the connecting channel 10, a. The body serves as a tide 11 on the body of the flap,. The primary channel 12 through the tube 13 and the safety valves 14 is connected to the cavities of the blocking channel of the housing. Channel 15 is connected to the atg / iocsphere, and connecting channel 10 through pipe 16 and channel 17 with a nadmanzhetny cavity 18. The upper semi-axis has a pin 19 and enters through the radial groove 20 of the drive shaft with a length of 1, -, the circumference of the 12th shaft where d is the diameter of the pin. Thus, the upper semi-axis 4 of the disk 2 and the drive shaft 6 are kinematically connected so that they can rotate relative to each other at some angle, for example 30. The drive shaft 6 is pressed against the upper semi-axis 4 by a nut 21. The lower semi-axis 5 is fixed by means of a cover 22. and podnik 23. Valve works as follows. During the initial rotation of the drive shaft 6 counterclockwise, it rotates freely relative to the upper semiaxis 4, for example, an angle of 30. At the same time, the lateral 9 connects the channels 10 and 15 and the sub-cuff 18 connects to the atmosphere. This is the first stage of opening the shutter, which is to ;; disconnect the cuff 3 from the peripheral disc disc and create a gap between them by the pressure of the piercing water. When turning further, when choosing a gap between the wall of the groove 20 and pin 19, the drive shaft 6 rotates together with the upper semi-axis 4 and the disk 2 rotates through 90 °, which corresponds to the open position of the gate, but the full rotation of the drive shaft is 120. When closing the shutter, the drive shaft is rotated clockwise and, thereby, the disk 2 is turned to the closed position. P) the groove 9 separates the channel 10 from the atmosphere and connects it to the pressure channel 12. The pressurized water through one of the check valves. 14, depending on The direction potokaj in tube 13, flow channel 9, channel 10, channel tube 16 and r 17 nadmanzhetnuyu enters the cavity 18 and the sealing disc occurs 2. Feasibility efficiency invention is poviyvnii reliability rotary damper works. Claims of the invention: Rotary damper, in the casing of which, on an axis connected to the lower part of the drive shaft, is installed a disk locking member sealed in the closed position with a sealing lip; forming with the surface of the groove in which it is located, the control cavity, and provided with a distribution device, characterized in that, in order to increase reliability, the distribution device is formed by the lower part of the drive shaft. a recess adapted to alternately communicating the control cavity of the cuff with the cavities of the housing and the atmosphere, wherein a radial groove is made in the drive shaft, and the axis is provided with a pin mounted with the possibility of engagement with the shaft groove. Sources of information taken into account in the examination 1. author's certificate of the USSR; 570748.1 CL R 16 K 3/02, 1975.

2. USSR author's certificate number 781472, cl. R 16 K 1/22, 1979 (prototype) ,.