RU2578777C1 - High-pressure plunger pump - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention relates to pump engineering, particularly to plunger pumps of high pressure, and can be used to feed working fluid under high pressure. Pump consists of housing 1, head 2 of housing 1, channel 3 and 4 working fluid feed channel of the working chamber 5 for working fluid with inlet and outlet valves 6 and 7, respectively. Lower cover 8 is installed in the lower part of housing 1 with hole 9 for filling oil. Shaft 10 with cylindrical eccentric is a single part and is installed on bearings. It is protected against the ingress of oil by means of the collar. Oil is in cavity 11 formed by body 1 and lower cover 8 of housing 1. It includes connecting rod 12, pusher 13, at least one plunger 14 with return spring 15 and cuff 16 of high pressure. Con-rod 12 is made solid and fitted on eccentric shaft 10. Pusher is installed in hole 13 plunger 14 with rest on plunger 14 on one side, and on the other side of the pusher 13 has flange 17, that rests on return spring 15. Crank 12, pusher 13 and plunger 14 are connected to pin 18. Comprises intake channel 19, intermediate outlet channel 20 made in head 2 of housing 1 and discharge channel 21, the latter is made in the upper right part of body 1 at intermediate outlet channel 20 and outlet valve 7. Reduced overall dimensions of head case 2.

EFFECT: simplified design, ease of assembly and servicing.

1 cl, 1 dwg

Description

The invention relates to the field of pump engineering, in particular to plunger high-pressure pumps, and can be used to supply high-pressure hydraulic fluid in various fields of the national economy, for example, in technological installations.

State of the art

Known piston high pressure pump containing a housing with a central partition and pistons, suction and discharge valves, diaphragms and a compressed air distribution device, while installed on both sides of the housing pistons and diaphragms, which are assembled in pairs in diaphragm blocks, mounted on a common rod and closed on both sides of the covers with channels for supplying compressed air to the air cavities formed by them from the compressed air distribution device, which is installed in the same housing, with internal the shafts form drainage cavities with the body, which are interconnected by a drainage channel.

In a piston pump, a compressed air distribution device is installed in each diaphragm block.

In the piston pump, the stem, on which all the diaphragms and pistons are mounted, is made of separate parts that are fastened together in a single piece (see US Pat. RU No. 2480622, IPC F04B 9/08, F04B 43/06, publ. 08/20/2010 )

The disadvantages of this piston pump are the complexity of the design and its low efficiency.

A double-acting plunger-piston multiplier is known, including a housing, a differential-type spool that controls the movement of the piston of the high pressure pump drive, booster plungers mounted on both ends of the piston, guiding devices that control the movement of the spool, while booster plungers, which are parts of the pump, perform the function a supercharger of the working fluid in the pumping unit, as well as the function of the distributor valve of the guide apparatus, providing movement of the control di differential spool in the automatic mode, the plungers are made uniform in diameter, and discharge channels connected with a common output to the consumer, have a common damping cavity item (see. US Pat. RU №2513060, IPC F15V 3/00, publ. 04.20.2014).

The disadvantage of this plunger-piston multiplier is the low level of pressure developed by the pump.

The closest in technical essence and the achieved positive effect and accepted by the authors for the prototype is a high-pressure plunger pump, comprising a housing, a cover with a centrally located pressure valve, connected to form a suction cavity filled with the pumped medium to accommodate the plunger and the spring-loaded sleeve covering it, and the plunger is connected to the drive and is mounted with the possibility of reciprocating movement, and the sleeve has a bore to interface with the plunger with the formation of a gap seal and installed with the possibility of limited axial movement to form together with the end face of the suction valve cover, while the sleeve on the side facing the actuator is provided with an additional bore coaxial with its bore, the diameter of which is larger than the diameter of the main bore, to form when mating with a plunger of the annular chamber, and the plunger is further provided with a contact seal located in the specified annular chamber.

In the pump, the main and additional bores have an arcuate surface in the axial section of the liner in the joint zone.

In the pump, the contact seal of the plunger is made in the form of an oil seal plunger spring-loaded on the side of the gap seal.

In the pump, between the arcuate surface of the liner and the spring of the stuffing box, a support ring is installed having a flat end surface in the zone of contact with the liner.

In the pump, the contact seal of the plunger is made in the form of a metal sleeve enclosing the plunger, having an annular groove on the outer surface to form, together with the inner surface, an additional bore of the sleeve of the annular chamber in communication with the mating zone of the plunger-sleeve using a radial hole made in the body of the sleeve from the side facing the crevice seal of the plunger.

In the pump, the sleeve on the drive side is equipped with a portion of the threaded surface with a nut fixed on it having axial threaded holes, and the sleeve is equipped with an annular flange with through holes for placing screws in the threaded holes of the nut part (see AS SU No. 1554777, IPC F04B 21/00, published on March 30, 1990).

The disadvantages of this plunger pump is the complexity of the design, the low level of pressure developed by the pump.

Disclosure of invention

The objective of the invention is the development of a plunger high pressure pump having a simplification of design, ease of assembly and quick maintenance.

The technical result that can be obtained using the proposed invention is to simplify the design, ease of assembly and quick maintenance.

The technical result is achieved using a high-pressure plunger pump containing a housing, a housing head with a chamber for the working fluid, channels for receiving and supplying the working fluid, inlet and outlet valves, inlet, intermediate outlet and outlet channels, a lower housing cover with a sleeve, a shaft with an eccentric on bearings mounted in the lower part of the housing, a plunger with a spring and a high pressure sleeve, a connecting rod and a pusher, while a plunger with a spring and a high pressure sleeve is installed, at least one n, with the possibility of reciprocating movement, while the connecting rod is made integral, and the pusher is installed in the hole in the plunger with emphasis on the plunger on one side, and on the other hand, the pusher is equipped with a flange on which the return spring rests, and the connecting rod, pusher and, at least one plunger is connected by a finger, and the shaft with the eccentric is made as a single part, while the outlet channel is made in the upper right part of the housing under the intermediate outlet channel and the outlet valve.

Thus, the achievement of the technical result is due to the fact that the plunger with a spring and a high-pressure cuff is installed, at least one, with the possibility of reciprocating movement, while the connecting rod is made integral and put on an eccentric, and the pusher is installed in the hole in the plunger with emphasis on the plunger on the one hand, and on the other hand, the pusher is equipped with a flange on which the return spring rests, and the connecting rod, pusher and at least one plunger are connected by a finger, and the shaft with an eccentric com formed single piece and the outlet formed in the upper right portion of the housing under an intermediate discharge port and discharge valve.

Brief Description of the Drawings

The drawing shows a plunger high pressure pump, General view.

The implementation of the invention

The high-pressure plunger pump consists of a housing 1, a head 2 of a housing 1, a receiving channel 3 and a working fluid supply channel 4, a working fluid chamber 5 with inlet and outlet valves 6 and 7, respectively, a lower cover 8 mounted in the lower part of the housing 1 with a hole 9 for filling oil, a shaft 10 with a cylindrical eccentric (not shown in the drawing), made by a single part, rotating on bearings (not indicated in the drawing), protected by a sleeve (not shown in the drawing) from oil being in of the bridge 11 formed by the housing 1 and the lower cover 8 of the housing 1, the connecting rod 12, the pusher 13 of at least one plunger 14 with a return spring 15 and a high pressure sleeve 16 with the possibility of reciprocating movement, while the connecting rod 12 is made integral and put on on an eccentric (not shown) of the shaft 10, and the pusher 13 is installed in the hole (not shown) in the plunger 14 with emphasis on the plunger 14 on the one hand, and on the other hand, the pusher 13 has a flange 17 on which the return spring rests 15, and the connecting rod 12, the pusher 13 and at least one plunger 14 are connected by a finger 18, and the pump consists of an inlet channel 19, an intermediate outlet channel 20, made in the head 2 of the housing 1 and the exhaust channel 21, the latter being made in the upper right part of the housing 1 under the intermediate exhaust channel 20 and exhaust valve 7, in order to reduce the overall dimensions of the head 2 of the housing 1.

The plunger high pressure pump operates as follows.

The working fluid through the intake channel 3, located in the head 2 of the housing 1, enters the working chamber 5 by means of an inlet valve 6, from which, during the working stroke of at least one plunger 14 with a return spring 15 and a high-pressure cuff 16 - progressive movement, passes through the intermediate outlet channel 20, made in the head 2 of the housing 1, the outlet channel 21, made in the housing 1 in its upper right part under the intermediate outlet channel 20 and the outlet valve 7, which gives the design a clear reduction in the overall dimensions of the head 2 of the housing 1, and the exhaust valve 7 due to the fact that the shaft 10 with a cylindrical eccentric made as a single part, rotating on bearings protected by a cuff from oil from the cavity 11 formed by the housing 1 and the lower cover 8 case 1, transmits movement through the connecting rod 12, the pusher 13, installed in the hole in the plunger 14, pushes the plunger 14, overcoming the resistance of the return spring 15 with the high pressure cuff 16 and thereby squeezing the working fluid from the working chamber 5, ra located in the head 2, while at least one plunger 14 with a return spring 15 and a high pressure sleeve 16 are mounted with the possibility of reciprocating movement, and the connecting rod 12 is made integral and put on the cam shaft 10, and the pusher 13 is installed into the hole in the plunger 14 with emphasis on the plunger 14 on the one hand, and on the other hand, the pusher 13 is provided with a flange on which the return spring 15 rests, and the connecting rod 12, the pusher 13 and at least one plunger 14 are connected by a finger 18, are achieved simplification cons ruktsii, assembly easy and fast service.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- simplification of the design;

- small dimensions;

- high reliability and performance of the pump;

- long-term operation;

- ease of assembly;

- speed of service.

Claims (1)

A high-pressure plunger pump comprising a housing, a housing head with a chamber for the working fluid, channels for receiving and supplying the working fluid, inlet and outlet valves, an inlet, an intermediate outlet and outlet channels, a lower housing cover with a sleeve, a shaft with an eccentric on bearings mounted in the lower part of the housing, a plunger with a spring and a high pressure sleeve, a connecting rod and a pusher, characterized in that the plunger with a spring and a high pressure sleeve is installed, at least one, with the possibility of a reciprocating movement, while the connecting rod is made integral, and the pusher is installed in the hole in the plunger with emphasis on the plunger on one side, and on the other hand, the pusher is equipped with a flange on which the return spring rests, and the connecting rod, pusher and at least one plunger connected by a finger, and the shaft with the eccentric made a single part, while the exhaust channel is made in the upper right part of the housing under the intermediate exhaust channel and the exhaust valve.

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