CN2361881Y

CN2361881Y - Four-cavity rotary displacement pump

Info

Publication number: CN2361881Y
Application number: CN 98251896
Authority: CN
Inventors: 张伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-25
Filing date: 1998-12-25
Publication date: 2000-02-02
Anticipated expiration: 2008-12-25

Abstract

The utility model relates to a rotary displacement pump of four-chamber formula, belong to rotary piston's varactor formula pump field, including hollow cylindrical cylinder, piston, pivot, cylinder gleitbretter etc. its characteristics are that the piston is positive quadrangular shape, divide the cylinder into four independent working chambers under the gleitbretter cooperation, when the piston is rotatory week, each working chamber will accomplish the quartic and breathe in, compress, exhaust circulation, therefore improved the output displacement of displacement pump greatly, and the piston is concentric rotation mode moreover, so the working noise is extremely low, and economic value is higher, can use as oil pump and low pressure air pump.

Description

The four-cavity rotating displacement pump

The utility model relates to a kind of four-cavity rotating displacement pump, belongs to the variable displacement pump field of rotary-piston.

At present, electrical equipment such as air-conditioning, refrigerator are generally used by public institute, and the core component of devices such as air-conditioning, refrigerator is generally compressor, also claim displacement pump, with the development of displacement pump manufacturing technology, by reciprocating type develop into rotary, rotating displacement pump has refrigerating efficiency height, good reliability, advantages such as volume is little are revolved and are turned around but also exist piston, only finish the one action circulation, output quantities such as refrigeration still are apparent not enough, and the rotation of piston eccentric, be easy to generate vibration, thereby the big shortcoming of noise.

The purpose of this utility model is the deficiency at above-mentioned rotating displacement pump, for people provide a kind of four-cavity rotating displacement pump, it is owing to adopting the cavity-separating structure, so the output quantity of this pump is 2.5 times of general co-content pump, and has concentric rotation, the advantage that noise is extremely low.

Above-mentioned purpose of the present utility model is achieved in that it includes the hollow cylindrical cylinder, the piston of a four-prism shape is placed wherein, vertical isoperimetric is gone up groove extremely down apart from having four on the cylinder inner wall, cylinder has the position wall thickness of groove and outwards protrudes, a cylinder slide plate is housed in each groove, cylinder slide plate and groove quality of fit are very high, one or more springs are arranged between slide plate and groove bottom, the cylinder slide plate closely contacts with piston side wall under the elastic force effect, and with the rotation of piston, in groove, slide, thereby cylinder chamber is divided into four mutually active chambers of independent sealing, on the cylinder, be fixed with respectively on the lower end mouth, lower end cap, last, respectively be distributed with suction on the lower end cap according to certain rules, exhaust port, when piston rotates, will compress the gas in each active chamber, discharge by exhaust port during to certain pressure, piston whenever rotate a circle each active chamber will finish four times air-breathing, compression, the exhaust work circulation.

Description of drawings

Fig. 1 is a central shaft sectional drawing of the present utility model;

Fig. 2 is a cross section view of the present utility model;

Fig. 3 is a upper end cap structural drawing of the present utility model;

Fig. 4 is a lower end cap structural drawing of the present utility model.

Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:

Provide a kind of embodiment of the present utility model in the accompanying drawing, it includes hollow cylindrical cylinder [1], piston [2], rotating shaft [3], cylinder end cap [4] and [5], cylinder slide plate [6] and suction, exhaust cap [7] and [8], its characteristics are that piston [2] is a four-prism that has central through bore, each incline all is the transition circle shape, piston [2] is contained in the cylinder [1], on the inwall of cylinder [1] vertically isoperimetric apart from have four go up under groove [9], cylinder [1] has the position wall thickness of groove [9] and outwards protrudes, a spring [10] is housed in every groove [9], cylinder slide plate [6] closely contacts with the sidewall of piston [2], cylinder slide plate [6] slides in groove [9] when piston [2] rotates, form motive sealing, thereby the interior spatial division of cylinder [1] is become four active chambers independently mutually, on, following cylinder head [4] and [5] be separately fixed at cylinder [1] on, on the end opening, air-breathing lid [7] is buckled in outside the cylinder upper end cap [4], exhaust cap [5] is buckled in outside the lower end cap [5], inhale, the setting of exhaust cap is mainly used to simplify inhales, the structure of exhaust, can on air-breathing lid [7], establish a gas supplementing opening [14], four active chambers are carried out tonifying Qi, on cylinder upper end cap [4], have four suction ports [11], each suction port [11] is corresponding with a cylinder slide plate [6], and be positioned at the right side of corresponding slide plate, on cylinder lower end cap [5], have four pores [12], and a relief opening [20] is arranged in the side of exhaust cap [8], an one-way exhaust valve [13] is housed on each pore [12], when gas pressure reaches setting value in four active chambers, outlet valve [13] is opened, discharge gas by relief opening [20], each pore [12] corresponding a slide plate [6], and be positioned at the left side of corresponding cylinder slide plate [6], and rotating shaft [3] is through in the through hole [15] at piston [2] center, the one end is inserted in the inner groovy [16] at cylinder upper end cap center, the other end passes the rotating shaft as the rotor [18] of motor [17] of cylinder lower end cap [5] and exhaust cap [8] center hole, also can be connected with driving belt, for the rotation of piston [2] provides power, motor [17] rotation will drive piston [2] rotation like this, each side of piston [2] can be the plane as required in addition, also can be that bent putting down is concave or convex, the side view difference will make the actual volume of cylinder [1] change, and be the plane in the present embodiment.

During work, the rotation of motor clockwise direction, piston will also be turned clockwise, gas is also gradually reduced in each active chamber, discharge to certain pressure, and each active chamber is just finished once air-breathing, compression, exhaust cycle during half-twist, piston each active chamber that whenever circles will be finished four circulations, whole displacement pump is then quite finished 16 circulations, thereby has improved the discharge amount of whole displacement pump.

Claims

1, a kind of four-cavity rotating displacement pump, include the hollow cylindrical cylinder, piston, rotating shaft, cylinder end cap, cylinder slide plate and suction, exhaust cap, it is characterized in that piston is a four-prism that has central through bore, each incline all is the transition circle shape, piston is contained in the cylinder, on the inwall of cylinder vertically isoperimetric apart from have on four under groove, a cylinder slide plate is housed in every groove, between cylinder slide plate and groove bottom surface, one or more springs are housed, the cylinder slide plate contacts with piston side wall, on, following cylinder end cap be separately fixed at cylinder on, on the end opening, air-breathing lid is buckled in outside the cylinder upper end cap, exhaust cap is buckled in outside the cylinder lower end cap, on the cylinder upper end cap, have four suction ports, each suction port is corresponding with a slide plate, and be positioned at the right side of corresponding slide plate, on the lower end cap of cylinder, have four pores, an one-way exhaust valve is housed on each pore, the corresponding slide plate of each pore, and be positioned at the left side of corresponding slide plate, in addition, have a gas supplementing opening at air-breathing tops, a relief opening is arranged on the exhaust cap side, and rotating shaft is through on the through hole at piston center, the one end is inserted in the inner groovy at cylinder upper end cap center, and the other end passes cylinder lower end cap and exhaust cap center hole and is connected with external motor or driving belt.

2, four-cavity rotating displacement pump according to claim 1, each side that it is characterized in that piston can be the plane, also can be curved surface.