SU920264A1

SU920264A1 - Cntrifugal valve-type self-pumping recirculation pump

Info

Publication number: SU920264A1
Application number: SU782575592A
Authority: SU
Inventors: Лев Николаевич Бритвин; Владислав Валентинович Буренин; Александр Яковлевич Новиков
Original assignee: Московский Ордена Трудового Красного Знамени Насосный Завод Им.М.И.Калинина; Московский Автомобильно-Дорожный Институт
Priority date: 1978-01-30
Filing date: 1978-01-30
Publication date: 1982-04-15

Description

(54) ЦЕНТРОБЕЖНЫЙ ВЕРТИКАЛЬНЫЙ САМОВСАСЫВАЮЩИЙ НАСОС РЕЦИРКУЛЯЦИОННОГО ТИПА(54) CENTRIFUGAL VERTICAL SELF-PRIMING PUMP OF RECIRCULATED TYPE

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Изобретение относитс к насосостроению, а именно к центробежным вертикальным самовсасывающим насосам рециркул ционного типа.The invention relates to pump engineering, namely to centrifugal vertical self-priming pumps of recirculation type.

Известен центробежный вертикальный самовсасывающий насос рециркул ционного типа, содержащий корпус с входным и выходным патрубками, расположенное в нем рабочее колесо с лопатками, установленными на несущем диске, и сепарационную камеру, сообщенную с выходным патрубком 1.A centrifugal vertical self-priming pump of recirculation type is known, comprising a housing with an inlet and outlet nozzles, an impeller disposed therein with blades mounted on a supporting disk, and a separation chamber in communication with the outlet nozzle 1.

Недостатком известного насоса вл етс невозможность обеспечени быстрого самовсасывани при больщих объемах всасывающей магистрали, что объ сн етс малой интенсивностью процесса смещени воздуха и жидкости в поле центробежных сил рабочего колеса.A disadvantage of the known pump is the impossibility of ensuring rapid self-suction with large suction pipe volumes, which is explained by the low intensity of the process of displacing air and fluid in the field of centrifugal forces of the impeller.

Цель изобретени - ускорение процесса самосасывани .The purpose of the invention is to accelerate the process of self-suction.

Указанна цель достигаетс тем, что насос дополнительно содержит конфузорнодиффузорный канал, выполненный в корпусе, причем конфузорный участок канала сообщен с выходом колеса и с входным патрубком , а диффузорный - с сепарационной камерой .This goal is achieved by the fact that the pump additionally contains a confusor-diffuser channel made in the housing, the confuser section of the channel communicating with the exit of the wheel and with the inlet pipe, and the diffuser channel with the separation chamber.

Кроме того, рабочее колесо выполнено в виде конусообразной воронки и снабжено дополнительными лопатками, установленными на тыльной стороне несущего диска.In addition, the impeller is made in the form of a conical funnel and is equipped with additional blades mounted on the back side of the carrier disk.

На фиг. 1 представлена конструктивна схема насоса; на фиг. 2 - насос с рабочим колесом, выполненным в виде конусообразной воронки.FIG. 1 shows a constructive scheme of the pump; in fig. 2 - pump with impeller, made in the form of a conical funnel.

Центробежный вертикальный самовсасы10 вающий насос рециркул ционного типа содержит корпус 1 с входным 2 и выходным 3 патрубками, расположенные в нем рабочее колесо 4 с лопатками 5, установленными на несущем диске 6, и сепарационную камеру 7, 15 сообщенную с выходным патрубком 3. В корпусе 1 выполнен конфузорно-диффузорный канал,.причем конфузорный участок 8 канала сообщен с выходом колеса 4 и с входным патрубком 2, а диффузорный участок 9 ка2Q нала - с сепарационной камерой 7.A centrifugal vertical self-priming pump of recirculation type includes a housing 1 with an inlet 2 and an outlet 3 with nozzles, an impeller 4 with blades 5 mounted on a supporting disk 6, and a separating chamber 7, 15 in communication with the outlet nozzle 3. In case 1 a confused-diffuser channel is made, and the confused part 8 of the channel is in communication with the exit of the wheel 4 and with the inlet 2, and the diffuser section 9 of the KA2Q is connected to the separation chamber 7.

Claims

The pump impeller can be made in the form of a conical funnel 10 and is equipped with additional blades 11 mounted on the back side of the carrier disk 6. In addition, a channel 12 can be provided in the housing 1 connected via a valve 13 to the coolant supply line 14 pump, and the air valve 15 or labyrinth seal 16 for venting air from the separation chamber 7 to the atmosphere. The pump in self-priming mode works as follows. When the impeller 4 rotates, the blades 5 direct the flow of fluid from the separating chamber 7 through the confusion-diffuser channel back into the separation chamber, where the liquid is placed by a ring along the walls of the housing due to centrifugal forces. In the confusing section 8 of the channel, the pressure drops, which ensures air suction from the inlet 2. The mixture of air and liquid further enters the separation chamber 7, where the separation of the liquid and air phases takes place. The released air is vented through the outlet 3 or through the air valve 15 or through the labyrinth seal 16 to the atmosphere. After the air is drawn off the supply line, all the internal cavities of the pump are filled with liquid, which is supplied through the outlet 3 to the consumer. When the impeller is made in the form of a cone-shaped funnel 10, additional blades 11 are installed on the back side of the carrier disk 6, which, due to the pressure difference created by them, increase the suction capacity of the pump and thereby accelerate the self-priming process. During prolonged operation of the pump for pumping air from the supply line through the inlet 2, the liquid recirculated in the internal cavities of the pump must be cooled, which is achieved by supplying a small amount of coolant from the additional source through channel 12 when the valve 13 is opened. Formula 1 . Centrifugal vertical self-priming pump of recirculation type, comprising a housing with inlet and outlet nozzles, impeller located in it with blades mounted on the carrier a disk and a separating chamber in communication with the outlet nozzle, characterized in that, in order to accelerate the self-priming process, the pump additionally contains a confusion-diffuser channel made in the housing, the confuser section of the channel communicating with the wheel outlet and the inlet , and diffuser - with a separation chamber.

2. Pump according to Claim 1, characterized in that the working column: CO is made in the form of a conical funnel and is equipped with additional blades mounted on the back side of the carrier disc. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 561010, cl. F 04 D 29/00, 1975.