SU846780A1

SU846780A1 - Concrete pump

Info

Publication number: SU846780A1
Application number: SU782672843A
Authority: SU
Inventors: Лазарь Фишельевич Аккерман
Original assignee: За витель жлсетт Л.Ф.Аккерман 14 ЯАТЕНТПОTHXfi iJiCKA
Priority date: 1978-10-11
Filing date: 1978-10-11
Publication date: 1981-07-15

Description

Изобретение относится к насосостроению, в частности к насосам для перекачивания вязких и неоднородных жидкостей, например бетоносмесей.The invention relates to pump engineering, in particular to pumps for pumping viscous and heterogeneous liquids, such as concrete mixtures.

Известен бетононасос, содержащий два рабочих цилиндра, имеющих рабочие ⁵и приводные камеры, разделенные поршнями, связанными между собой цепью, оде- . той на установленную в корпусной детали, закрепленной на рабочих цилиндрак, звездочку, с образованием, при движении поршней в противофазе, ведущей и ведомой ветвей, причем полость корпусной детали и приводные камеры герметизированы и сообщены с источником _|5избыточного давления рабочей жидкости [1Known concrete pump containing two working cylinders having a working ⁵ and drive chambers, separated by pistons, interconnected by a chain, clothes. one on the sprocket installed in the body part, mounted on the working cylinder, with the formation, when the pistons move in antiphase, of the driving and driven branches, and the cavity of the body part and drive chambers are sealed and connected to the source of _{| 5} overpressure of the working fluid [1

Однако в этом насосе цепь пропускается через перегородку, отделяющую пригодную камеру одного цилиндра от приводной камеры другого цилиндра. Уплотни тёльный элемент j установленный в перегородке в зоне прохода цепи, быстро изнашивается, что приводит к частым отказам приводной части насоса, что, в свою очередь, снижает надежность и долговечность насоса.However, in this pump, a circuit is passed through a partition separating a suitable chamber of one cylinder from a drive chamber of another cylinder. The sealing element j installed in the baffle in the zone of passage of the chain wears out quickly, which leads to frequent failures of the drive part of the pump, which, in turn, reduces the reliability and durability of the pump.

Цель изобретения - повышение надежности и долговечности.The purpose of the invention is to increase reliability and durability.

Поставленная цель достигается тем, что звездочка снабжена механическим приводом для осуществления ее возвратно-поступательного движения, а приводные камеры обоих цилиндров через полость корпусной детали сообщены между собой.This goal is achieved in that the sprocket is equipped with a mechanical drive to effect its reciprocating motion, and the drive chambers of both cylinders are interconnected through the cavity of the body part.

На фиг. 1 изображена схема бетононасоса, вид в плане; на фиг. 2 - схема бетононасоса, сечение по одному из рабочих цилиндров.In FIG. 1 shows a diagram of a concrete pump, a plan view; in FIG. 2 is a concrete pump diagram, a section along one of the working cylinders.

Бетононасос содержит два рабочих цилиндра 1 и 2, имеющих рабочие 3 и 4 и приводные 5 и 6 камеры, разделенные поршнями 7 и 8, связанными между собой цепью 9, одетой на установленную в корпусной детали 1G, закрепленной на рабочих цилиндрах 1 и 2,.звездочку 11 с образованием при движении поршней 7 з 846780 4 и 8 в противофазе ведущей и ведомой ветвей. Полость 12 корпусной детали и приводные камеры 5 и 6 сообщены между собой и с источником избыточного давления рабочей жидкости под- $ питочным насосом 13, для осуществивния попеременного перемещения поршня 7 или 8, связанного с ведомой ветвью цепи 9. Звездочка 11 установлена на валу 14 и снабжена механическим при- ю водом 15 дляосуществления ее возвратно-поворотного движения. Привод снабжен датчиком 16 кольцевого положения поршней 7 и 8 для управления направлением движения привода 14 и, и следовательно, звездочки 11. Подпиточный насос'13 может быть приведен от эксцентрика 17, установленного на валу 14 звездочки 11. Насос имеет также загрузочный бункер 18 и распре- ₂₀делительное устройство в виде патрубка 19, установленного с возможностью поворота относительно нагнетательного трубопровода 20.в бункере 18. Устройство для поворота патрубка 19 синхро- 25 низировано с. работой привода 15 (на фиг. не 'показано) .The concrete pump contains two working cylinders 1 and 2, with working 3 and 4 and drive 5 and 6 chambers, separated by pistons 7 and 8, connected by a chain 9, mounted on a housing part 1G, mounted on the working cylinders 1 and 2 ,. an asterisk 11 with the formation of the movement of the pistons 7 of 846780 4 and 8 in antiphase of the leading and driven branches. The cavity 12 of the housing part and the drive chambers 5 and 6 are in communication with each other and with a source of overpressure of the working fluid by the feed pump 13 to alternately move the piston 7 or 8 connected to the driven branch of the chain 9. The sprocket 11 is mounted on the shaft 14 and equipped with a mechanical drive 15 for the implementation of its reciprocating motion. The drive is equipped with a sensor 16 for the annular position of the pistons 7 and 8 to control the direction of movement of the drive 14 and, therefore, the sprocket 11. The make-up pump'13 can be driven by an eccentric 17 mounted on the shaft 14 of the sprocket 11. The pump also has a feed hopper 18 and a distribution - _{20 a} dividing device in the form of a pipe 19 mounted for rotation relative to the discharge pipe 20. in the hopper 18. The device for turning the pipe 19 is synchronized with 25. the operation of the drive 15 (in Fig. not 'shown).

Бетононасос работает следующим образом.Concrete pump works as follows.

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Патрубок 19 перемещается в одно из крайних положений. Привод 15 сообщает звездочке 11 вращательное движение, например, против направления движения часовой стрелки. Звездочка 11 сообщает движение ведущей ветви цепи 9 и ³⁵последняя перемещает поршень 7 в цилиндре 1. В результате движения поршня 7 объем рабочей камеры 3 увеличивается, а приводной камеры 5 - уменьшается. Поршень 7 воздействует на рабочую жид- ⁴⁰кость в приводной камере 5 и возникающее в результате этого воздействия давление рабочей жидкости действует на поршень 8 цилиндра 2, связанного с ведомой ветвью цепи 9, поршень 8 перемещается и в цилиндре 2 объем приводной камеры 6 увеличивается, а рабочей камеры 4 уменьшается. Таким ’образом, в рабочем цилиндре 1 происходит такт всасывания и бетоносмесь ⁵⁰из приемного бункера 18 поступает в рабочий цилиндр 1.· Одновременно в рабочем цилиндре 2 происходит такт нагнетания и бетоносмесь поршнем 8 вытесняется из рабочей камеры 4 в патру-⁵⁵бок 19 и далее по нагнетательному трубопроводу 20 - к потребителю. По достижению поршнями 7 и 8 крайних по ложений датчик 16 дает команду на перемещение патрубка 19 в другое крайнее положение и на реверсирование направления движения привода 15. Звездочка 11 начинает вращаться по направлению движения часовой стрелки и сообщает движение ведущей ветви цепи 9, последняя перемещает поршень 8 в цилиндре 2. В результате движения поршня 8 объем рабочей камеры 4 увеличивается, а приводной камеры 6 уменьшается. Поршень 8 воздействует на рабочую жидкость в приводной камере 6 и возникающее в результате этого воздействия давление рабочей жидкости действует на поршень 7 цилиндра 1, связанного с ведомой ветвью цепи 9, поршень 7 перемещается и в цилиндре 1 объем приводной камеры 5 увеличивается, а рабочей камеры 3 уменьшается. Таким образом, в рабочем цилиндре 1 происходит такт нагнетания, а в цилиндре 2 - такт всасывания. По достижении поршнями 7 и 8 крайних положений датчик дает команду на перемещение патрубка 19 в первое крайнее положение и на реверсирование направления движения привода 15.The pipe 19 is moved to one of the extreme positions. The drive 15 gives the sprocket 11 a rotational movement, for example, counterclockwise. The asterisk 11 indicates the movement of the leading branch of the chain 9 and ^{35, the} latter moves the piston 7 in the cylinder 1. As a result of the movement of the piston 7, the volume of the working chamber 3 increases, and the drive chamber 5 decreases. The piston 7 acts on the working fluid ⁴⁰ in the drive chamber 5 and the pressure of the working fluid resulting from this action acts on the piston 8 of the cylinder 2 connected to the driven branch of the chain 9, the piston 8 moves and the volume of the drive chamber 6 increases in the cylinder 2, and the working chamber 4 is reduced. Thus, in the working cylinder 1 there is a suction stroke and the concrete mixture ⁵⁰ from the receiving hopper 18 enters the working cylinder 1. · At the same time in the working cylinder 2 there is a pumping stroke and the concrete mixture is displaced by the piston 8 from the working chamber 4 into the patrol ⁵⁵ side 19 and further through the discharge pipe 20 to the consumer. Upon reaching the extreme positions of the pistons 7 and 8, the sensor 16 gives a command to move the pipe 19 to another extreme position and to reverse the direction of movement of the drive 15. The sprocket 11 starts to rotate in the clockwise direction and reports the movement of the leading branch of the chain 9, the latter moves the piston 8 in the cylinder 2. As a result of the movement of the piston 8, the volume of the working chamber 4 increases, and the drive chamber 6 decreases. The piston 8 acts on the working fluid in the drive chamber 6 and the pressure of the working fluid resulting from this action acts on the piston 7 of the cylinder 1 connected to the driven branch of the chain 9, the piston 7 moves and the volume of the drive chamber 5 increases in the cylinder 1, and the working chamber 3 decreases. Thus, in the working cylinder 1 there is a discharge stroke, and in the cylinder 2 - the suction stroke. Upon reaching the extreme positions by the pistons 7 and 8, the sensor gives a command to move the pipe 19 to the first extreme position and to reverse the direction of movement of the actuator 15.

Далее циклы повторяются.Further cycles are repeated.

Claims

The invention relates to pumping speeds, in particular to pumps for pumping in 3-1X and non-uniform liquids, such as concrete mixes. A concrete pump containing two working cylinders, operating workers and drive chambers, separated by pistons, connected by a chain, is mounted on a sprocket mounted on the working cylinders, which is mounted in an out of phase, driving gear. and driven branches, with the body cavity and drive chambers being sealed and communicating with the source of overpressure of the working fluid. However, in this pump, the circuit is passed through a partition that separates the water chamber of one cylinder from the drive chamber of another cylinder. The sealing element j installed in the partition in the passage area of the chain quickly becomes loose, which leads to frequent failures of the drive part of the pump, which, in turn, reduces the reliability and durability of the pump. The purpose of the invention is to increase reliability and durability. This goal is achieved by the fact that the sprocket is equipped with a mechanical drive for carrying out its reciprocating motion, and the driving chambers of both cylinders communicate with each other through the cavity of the housing part. FIG. 1 shows a diagram of a concrete pump, a plan view; in fig. 2 is a schematic diagram of a concrete pump; a section through one of the working cylinders. The concrete pump contains two working cylinders i and 2, there are workers 3 and 4 and driving 5 and 6 chambers separated by pistons 7 and 8 connected by a chain 9, wearing an installed in case part 10, zakretshennoy on the working cylinders 1 and 2. star And with the formation during the movement of the pistons 7 and 8 in antiphase leading and driven branches. The cavity 12 of the housing part and the drive chambers 5 and 6 communicate with each other and with a source of working fluid overpressure by a submersible pump 13 to alternately move the piston 7 or 8 connected to the driven branch of chain 9. The sprocket 11 is mounted on the shaft 14 and is equipped with a mechanical drive 15 for its reciprocating motion. The actuator is equipped with a sensor 16 for annular positioning of the pistons 7 and 8 to control the direction of movement of the actuator 14 and, consequently, Sprocket P. The booster pump 13 can be driven from the eccentric 17 mounted on the shaft 14 of the sprocket 11. The pump also has a charging hopper 18 and a switchgear the form of the pipe 19, installed with the possibility of rotation relative to the discharge pipe 20. in the hopper 18, the Device for turning the pipe 19 is synchronized with. the operation of the actuator 15 (Fig. not shown). Concrete pump works as follows. Nozzle 19 is moved to one of the extreme positions. The actuator 15 informs the sprocket 11 with a rotational movement, for example, counterclockwise. Asterisk 1i indicates the movement of the leading branch of chain 9 and the last moves piston 7 in cylinder 1. As a result of movement of piston 7, the volume of working chamber 3 increases, and the driving chamber 5 decreases, piston 7 acts on the working bone in the drive chamber 5 and As a result of this, the pressure of the working fluid acts on the piston 8 of the cylinder 2 connected with the driven branch of the chain 9, the piston 8 moves and in the cylinder 2 the volume of the drive chamber 6 increases and the working chamber 4 decreases. Thus, in the working cylinder 1, a suction stroke takes place and the concrete mixture from the receiving hopper 18 enters the working cylinder 1.- At the same time, an injection stroke occurs in the working cylinder 2 and the concrete mixture is displaced from the working chamber 4 to the piston 8 and further along the discharge pipeline 20 - to the consumer. By ds-pulling the pistons 7 and 8, the extreme low position of the sensor 16 gives the command to move the nozzle 19 to another extreme position and to reverse the direction of motion of the drive 15. The asterisk 11 begins to rotate in the direction of clockwise rotation and reports the movement of the driving branch of chain 9, last moves piston 8 in cylinder

2. As a result of the movement of the piston 8, the volume of the working chamber 4 increases, and the drive chamber 6 decreases. The piston 8 acts on the working fluid in the drive chamber 6 and the resulting pressure of the working fluid acts on the piston 7 of the cylinder 1 connected to the driven chain branch 9, the piston 7 moves and the volume of the drive chamber 5 in the cylinder 1 increases camera 3 decreases. Thus, in the working cylinder 1 a pressure stroke occurs, and in cylinder 2 a suction stroke occurs. Upon reaching the pistons 7 and 8 of the extreme positions, the sensor gives a command to move the nozzle 19 to the first extreme position and to reverse the direction of motion of the actuator 15. Then the cycles are repeated. Claims of the invention: Concrete pump containing two working cylinders, hiccupping working and driving chambers, separated by pistons, connected to each other by a chain, mounted on a sprocket mounted on the working cylinders, an asterisk with driving and driven branches , wherein the cavity of the body part and the drive chambers are sealed and communicated with a source of overpressure of the working fluid, characterized in that, in order to improve reliability and durability, the asterisk is equipped with and mechanically driven to carry out its reverse movement, and the driving chambers of both working cylinders communicate with each other through the cavity of the housing part. Sources of information taken into account in the examination 1. Accented for Germany of Germany No. 2.009.275, cl. 59a 3, 1971.

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