SU844871A1

SU844871A1 - Collar-type parking seal

Info

Publication number: SU844871A1
Application number: SU792812435A
Authority: SU
Inventors: Евгений Григорьевич Мясковский; Геннадий Михайлович Кукин
Original assignee: за вители
Priority date: 1979-08-28
Filing date: 1979-08-28
Publication date: 1981-07-07

Description

Изобретение относится к уплотнительной технике, в частности к стояночным уплотнениям манжетного типа для вращающихся валов.The invention relates to a sealing technique, in particular to a parking seal lip type for rotating shafts.

Известно стояночное уплотнение манжетного типа с устройством, раскрывающим манжету при вращении вала и прижимающим ее при стоянке взаимодействующей с ней поверхности £1]. В этом уплотнении губка манжеты прижимается к выступу корпусной детали за счет сил упругости, а также упомянутым прижимным устройством, которое выполнено в виде единого узла, состоящего, из ряда размещенных в отбортовке губки манжеты грузов, взаимодействующих с подпружиненными в радиальном направлении стержнями, которые, будучи связаны с одной стероны, с грузами, с другой стороны связаны с выполненными в корпусной детали манжеть^ отверстиями.Known parking seal cuff type with a device that opens the cuff during rotation of the shaft and presses it when the parking surface interacting with it £ 1]. In this seal, the cuff sponge is pressed against the protrusion of the body part due to the elastic forces, as well as the said clamping device, which is made in the form of a single unit, consisting of a number of weights located in the collar of the cuff sponge, interacting with the radially spring-loaded rods, which, being connected with one sterone, with cargoes, on the other hand connected with cuffs made in the body part.

Недостатками известного уплотнения являются сравнительная сложность конструкции, большое количество деталей, до15 тонкостенной гофрированной мем~ закрепленной своей периферической в корпусной части манжеты, свясвоей внутренней частью с груза— роговизна изготовления, небходимость достаточно высокой точности изготовления.The disadvantages of the known seal are the comparative complexity of the design, a large number of parts, up to 15 thin-walled corrugated mem- ory fastened to its peripheral in the body part of the cuff, the associated internal part with the load — cornea of manufacture, and the necessity of sufficiently high precision of manufacture.

Цель изобретения - упрощение конструкции, удешевление изготовления, повышение надежности.The purpose of the invention is to simplify the design, reduce the cost of manufacture, increase reliability.

Это достигается благодаря тому, что подпружинивающий грузы элемент выполнен в виде браны, частью занной ми и перфорированной по всему полю прорезями, например радиальными.This is achieved due to the fact that the load-springing element is made in the form of a brane, partly occupied by mi and perforated throughout the field with slots, for example radial.

На фиг. 1 изображен один из возможных вариантов исполнения описываемого изображения; на фиг. 2 - разрез A—А фиг. 1.In FIG. 1 shows one of the possible embodiments of the described image; in FIG. 2 - section A — A of FIG. 1.

Предлагаемое уплотнение состоит из манжеты 1, установленной в корпусной детали 2 манжеты. Эта корпусная деталь . в данном случае выполнена в виде цилиндрического стакана, установленного на валу 3 и вращающегося вместе с ним. В отбортовке 4 губки 5 манжеты установленыThe proposed seal consists of a cuff 1 installed in the body part 2 of the cuff. This body part. in this case, made in the form of a cylindrical glass mounted on the shaft 3 and rotating with it. Flanging 4 sponges 5 cuffs installed

84487i и закреплены грузы 6, с которыми связана своей внутренней частью мембрана 7, закрепленная своей периферической частью в корпусной части манжеты и/или стакана при помощи, например, гайки, 8. Рабо- ₅чая кромка губки 5 взаимодействует с выступом 9 (в данном случае цилиндрическим), выполненным в корпусе 10 уплотнения. Мембрана по всему полю перфорирована прорезями 11, например, радиаль- Ю ными. Эти прорези несут две функции: вопервых, они, надрезая мембрану, делают ее эластичной в радиальном направлении, во-вторых, они являются отверстиями, через которые обеспечивается доступ уплот- 15 нительной среды в рабочую полость 12 манжеты, без чего не могли бы быть использованы гидравлические силы для поджима манжеты.84487i and weights 6 are fixed, to which the membrane 7 is connected with its inner part, fixed with its peripheral part in the body part of the cuff and / or the cup using, for example, a nut 8. Working _{5, the} edge of the sponge 5 interacts with the protrusion 9 (in this case cylindrical) made in the housing 10 of the seal. The membrane over the entire field is perforated by slots 11, for example, radial. These slots have two functions: firstly, by notching the membrane, they make it elastic in the radial direction, and secondly, they are holes through which the sealing medium is accessible into the working cavity of the 12 cuffs, without which they could not be used hydraulic forces for tightening the cuff.

На стоянке манжета за счет сил упру- ²⁰гости ее материала, за счет давления уплотняемой среды и за счет усилия мембрары закрыта. При вращении вала И связанного с мним стакана с манжетой грузы под действием центробежных сил стремят- ²⁵ся растянуть отбортовку губки и саму губку, преодолевая сопротивление пружинящего действия мембраны. Диаметр рабочей кромки губки увеличивается, и она перестает соприкасаться с выступом 9. При замедлении вращения вала мембрана воздействует на грузы и закрывает манжету.Parked the cuff due to the elastic forces of ²⁰ guests its material due to the pressure of the sealing medium and due to the efforts of membrary closed. Upon rotation of the shaft and associated with the alleged cup with cuff loads under the action of centrifugal forces been keen ²⁵ Xia stretch flanging sponges and sponge itself, overcoming the resistance of the spring action of the membrane. The diameter of the working edge of the sponge increases, and it ceases to touch the protrusion 9. When the shaft is slowed down, the membrane acts on the weights and closes the cuff.

Преимуществами описанной^: конструкции являются: простота, сравнительно малое количество деталей, отсутствие тру- ³⁵ The advantages ^described: design are: simplicity, a relatively small number of parts, no ^labor-35

АA

Ί щихся элементов в раскрывающе-поджи мающем устройстве, отсутствие скручивания отбортовки губки по отношению к корпусной части манжеты.Элементов elements in the opening-pressing device, the absence of twisting of the flanging of the sponge in relation to the body part of the cuff.

Изобретение позволяет существенно снизить стоимость изготовления предлагаемого уплотнения по сравнению с известным, а также значительно повысить его надежность за счет устранения закусывания отдельных элементов раскрывающеподжимающего устройства.The invention allows to significantly reduce the manufacturing cost of the proposed seal in comparison with the known, as well as significantly increase its reliability by eliminating the biting of individual elements of the opening compression device.

Claims

The invention relates to an engineering technique, in particular, to seals of a sleeve type for rotating shafts. A well-known night seal of the cuff-type with a device that opens the cuff when the shaft rotates and presses it when the surface interacting with it is l. In this seal, the cuff sponge is pressed against the protrusion of the body part by the forces of elasticity, as well as by the said clamping device, which is designed as a single unit consisting of a series of cargoes arranged in the lip of the cuff sponge, interacting with radially spring-loaded rods which, being connected on the one hand with weights, on the other hand are connected with holes made in the body part. . The disadvantages of the known compaction are the comparative complexity of the design, the large number of parts, the cost of manufacture, and the need for a sufficiently high accuracy of the fabrication. The purpose of the invention is to improve the design, reduce the cost of manufacture, increase reliability. This is achieved due to the fact that the spring-loaded weights element is designed as a thin-walled corrugated membrane, fixed with its periferic part in the body part of the cuff, connected with its internal part with weights and perforated across the entire field with slots, for example radial. FIG. 1 shows one of the possible embodiments of the described AND (3; Fig. 2 is section A-A of Fig. 1. The proposed seal consists of a cuff 1 installed in the body part 2 of the cuff. This body part in this case is designed as a cylindrical cup mounted on the shaft 3 and rotating along with it. In the sieving 4 sponges 5 cuffs 1, weights 6 are fixed and secured to which the inside of the membrane 7 is fixed by its peripheral part in the body part of the cuff and / or glass for example measures, nuts 8. The working edge of the sponge 5 interacts with the protrusion 9 (in this case, cylindrical) made in the seal housing 1O. The membrane is perforated throughout the field with slots 11, for example, radial. These slots have two functions: first, they are notched the membrane is made elastic in the radial direction; secondly, they are openings through which the sealing medium is allowed to enter the working cavity 12 of the cuff, without which hydraulic forces could not be used to compress the cuff. The fitting of the cuff due to the elastic forces of its material, due to the pressure of the sealing medium and due to the force of the membrane is closed. When the shaft and the imaginary cup with the cuff are rotated, the loads under the action of centrifugal forces tend to stretch out the sponge and the lip itself, overcoming the resistance of the membrane's spring action. The diameter of the sparking edge of the sponge increases, and it no longer comes into contact with the protrusion 9. As the shaft rotates, the diaphragm acts on the weights and closes the cuff. The advantages of the described construction are: simplicity, a relatively small number of parts, the absence of rubbing elements in the crushing-setting-up mating device, the absence of twisting of the lip of the sponge in relation to the body part of the cuff. The invention makes it possible to significantly reduce the manufacturing cost of the proposed seal as compared with the known one, as well as significantly increase its reliability by eliminating the biting of individual elements of the opening-pressing device. Claims One hundred night seal of the cuff-type with opening-modifying device made in the form of cargo cuff fixed in the sponge, radially spring-loaded with respect to the body part of the cuff, characterized in in the form of a corrugated thin-walled membrane, fixed with its peripheral part in the body part of the cuff, perforated across the entire field with cuts and connected oh its internal part with the goods. Sources of information taken into account in the examination 1. Authorship certificate of the USSR in application No. 2771796/08, cl. F 16 J 15/32, 1979.

ig.1

FIG.