CN2361880Y

CN2361880Y - Five-cavity rotary positive displacement pump

Info

Publication number: CN2361880Y
Application number: CN 98251893
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 five-cavity rotary displacement pump belonging to the field of a variable displacement pump of a rotary piston. The utility model comprises a cylinder, a piston, an end cover, sliding blades, etc. The utility model is characterized in that the piston forms a positive pentagonal shape; the piston is matched with five sliding blades to lead the cylinder to be divided into five independent working chambers. When the piston rotates for one circle, each working chamber can obtain air suction and air exhaust cycles for five times, the discharge capacity of the displacement pump can be improved, simultaneously, the rotation of the piston is carried out in a concentric mode, and the mechanical noise is little.

Description

Five cavate rotating displacement pumps

The utility model relates to a kind of five cavate rotating displacement pumps, belongs to the variable displacement pump field of rotary piston.

At present, rotating displacement pump also claims rotary compressor as air-conditioning, the core component of equipment such as refrigerator, be widely adopted, rotating displacement pump generally is made up of hollow cylindrical cylinder and piston etc., piston rolls in cylinder or rotates, gas etc. is compressed, discharge advantage such as it is little to have a volume, and refrigerating capacity is big, but because piston whenever circles, rotating displacement pump is only finished once air-breathing, compression, exhaust cycle, thereby fail to give full play to the discharge ability of cylinder, general its piston of rotating displacement pump all is eccentric rotation simultaneously, thereby easily produce vibration, send mechanicalness noise.

The purpose of this utility model is the deficiency at above-mentioned volume rotary pump, for people provide a kind of five cavate rotating displacement pumps.

Above-mentioned purpose of the present utility model is to realize by such mode: it includes a hollow cylindrical cylinder, the piston of a positive pentagonal prism shape is installed in cylinder, piston sleeve can rotate with rotating shaft in rotating shaft, have on five to following groove in vertical isoperimetric distance on the inwall of cylinder, a slide plate is housed in every groove, between slide plate and groove bottom surface, one or more springs are housed, under the elastic force effect, slide plate closely contacts with piston side wall, and along with being rotated in the groove of piston slided, form moving sealing, space in the cylinder is divided into five independently active chambers, in 1/5th weeks of revolution when piston rotates, each active chamber is finished once air-breathing, compression, exhaust cycle, piston circle and then respectively finish the circulation of five tasks.

Description of drawings:

Fig. 1 is a middle axial plane sectional view of the present utility model;

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

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

Fig. 4 is the utility model lower end cap structural drawing;

Below in conjunction with drawings and Examples the technical solution of the utility model is described further:

Accompanying drawing provides a kind of embodiment of the present utility model, include 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 structural characteristics are that piston [2] is a positive pentagonal prism body that has central through bore, five inclines all are the transition circle post shapes, piston [2] is contained in the cylinder [1], on the inwall of cylinder [1] vertically isoperimetric apart from have five go up under groove [9], cylinder [1] has the thicker and outside protrusion in position of groove [9], a cylinder slide plate [6] all is housed in each groove [9], cylinder slide plate [6] is high especially with the quality of fit of groove [9], when piston [2] rotates in cylinder [1], cylinder slide plate [6] slides in groove [9], thereby keep tight the contact with piston [2] sidewall, cylinder [1] inner chamber is divided into five active chambers independently mutually, on, following cylinder end cap [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 [8] is buckled in outside the cylinder lower end cap [5], on cylinder upper end cap [4], have five 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 ground lower end cap [5], have five pores [12], an one-way exhaust valve [13] is housed on each pore [12], the corresponding cylinder slide plate [6] of each pore [12] and be positioned at the left side of corresponding cylinder slide plate, have a gas supplementing opening [14] at air-breathing lid [7] top in addition, have an exhaust port [20] in the exhaust cap side, and rotating shaft [3] is through among the through hole [15] at piston [2] center, and an end is inserted among the inner groovy [16] at cylinder upper end cap [4] center, the other end passes cylinder lower end cap [5] and exhaust cap [8] center hole and is connected with external motor [17], present embodiment shaft [3] is as the rotating shaft of the rotor [18] of motor [17], also rotating shaft [3] can be connected by driving belt with shaft of motor, the plane can be made in five sides of piston [2] as required, also can be that bent putting down is indent and evagination, be the plane in the present embodiment, output quantity changes because of side view like this.

During work, the concentric rotation of motor drives piston will be compressed the gas in each active chamber, reach certain pressure gas by discharging in the outlet valve, that 72 ° of every rotations are finished once is air-breathing, compression, exhaust work circulation, and piston each active chamber that rotates a circle is finished the circulation of five tasks.

The utility model has the advantage of and adopt the cavity-separating structure, this displacement pump is compared with general displacement pump, Have bigger fan-out capability, and because piston Concentric rotation operating noise is low, and can be used for air-conditioning, refrigerator and As oil pump, mesolow air pump, higher economic worth is arranged.

Claims

1, a kind of five cavate rotating displacement pumps, 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 positive pentagonal prism body that has central through bore, five inclines all are the transition circle shapes, piston is contained in the cylinder, on the cylinder inner wall vertically isoperimetric apart from have on five under groove, a cylinder slide plate is housed in each groove, between cylinder slide plate and groove bottom surface, adorn a spring, 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 five suction ports, each suction port is corresponding with a cylinder slide plate, and be positioned at right side corresponding to slide plate, on the lower end cap of cylinder, have five 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, have a gas supplementing opening at air-breathing tops in addition, a relief opening is arranged on the exhaust cap side, and rotating shaft is through in the through hole at piston center, and an end is inserted in the inner groovy at cylinder upper end cap center, and the other end passes the cylinder lower end cap and the exhaust cap center hole is connected with external motor or driving belt.

2, five cavate rotating displacement pumps according to claim 1, each side that it is characterized in that piston can be the plane, also can be curved surface.