CN2365423Y

CN2365423Y - Plunger pump

Info

Publication number: CN2365423Y
Application number: CN 99207249
Authority: CN
Inventors: 刘鹏飞
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-05
Filing date: 1999-04-05
Publication date: 2000-02-23
Anticipated expiration: 2009-04-05

Abstract

The utility model relates to a plunger pump. A rotor which rotates around an axial lead is arranged outside a cylinder, and the axial lead is parallel to the center line of the cylinder. The inner wall of the rotor is provided with a closed helical sliding slot, and the plunger face of a plunger is provided with a lug. The lug goes through a straight sliding slot opened along the bus bar of the cylinder and is embedded in the helical sliding slot of the rotor. The lug passes the helical sliding slot 22 through the rotation of the rotor, and the straight sliding slot 23 delimits the lug to drive the plunger 15 to make reciprocating movement. One plunger generates two empty cavities with the action of guiding and discharging fluid, and the size of the empty cavity is changeable. The plunger pump provided by the utility model can also be provided with a plurality of cylinders and plungers. The high-pressure characteristic of the plunger pump is reserved, and the power of the matched motor decreases because the fluid conveying capacity in one period tends balanced. Thus, the fluid conveying pulse is smooth and the mechanical efficiency is improved.

Description

Plunger pump

The utility model relates to a kind of plunger pump, be used for conveyance fluid.

Plunger pump, the built-in plunger of cylinder, plunger one end has connecting rod to make the plunger to-and-fro motion, causes the cavity that forms between the plunger the other end and the cylinder to change between size, inhales a row and finishes and transport fluid to reach one.The plunger pump one secondary cylinder and the plunger of this structure have only a cavity that is changing.At present, plunger pump all only has a secondary cylinder and a plunger.In sum, the plunger pump of prior art has following some deficiency at least: 1. one timing of the quantity delivered in the unit time, and its gas-distributing motor requires bigger power; 2. the fluid of being carried pulse feature under its effect is very big; 3. mechanical efficiency is lower.

At above deficiency, the purpose of this utility model is exactly that a kind of carry steady, the higher plunger pump of efficient will be provided.

Plunger pump provided by the utility model, its cylinder has one outward according to shaft axis rotation and the shaft axis rotor parallel with the cylinder center line, rotor inner wall has the helical chute of sealing, one projection is arranged on the cylinder of plunger, and this projection is passed the straight runner that cylinder upper edge bus opens and is trapped in the helical chute of rotor.

When rotor rotation, the helical chute of the sealing on its inwall promotes projection makes plunger reciprocating in cylinder.Because the component no longer of drive plunger activity is an end that is placed in plunger, and make the two ends of plunger all can constitute the cavity of size variation, improved mechanical efficiency with cylinder.When carrying the fluid of same volume, the ability of the instantaneous acting of motor of required configuration just can reduce, and one of plunger back and forth makes fluid pulse become two small echos by a big ripple simultaneously.

In order further to improve the above-mentioned effect of plunger pump provided by the utility model, in plunger pump provided by the utility model, its cylinder and plunger have at least two pairs to be set up in parallel on a stator, and the straight runner on the cylinder is on same circumference, and stator and pump seat are fixed.

Plunger pump provided by the utility model, because the convection cell that comprises in a plurality of size variation produces the cavity of suction effect, so power of motor can reduce greatly than prior art, pulse more becomes smoothly, mechanical efficiency also improves greatly.

Fig. 1 be the utility model one embodiment partly cut open figure;

Fig. 2 is that the A-A of Fig. 1 is to cuing open figure;

Fig. 3 is the rotor sectional view among Fig. 1.

Embodiment:

Present embodiment is the plunger pump of a conveying gas.As shown in Figure 1, 2, 3, this plunger pump has 5 secondary cylinder and plungers.5 cylinders are directly to punch to form on the stator 16 of cylindrical shape, arrange respectively have straight runner to open on the bus of stator cylinder on the cylinder with cylinder at the first-class branch of same circumference.There are gear and electric electromechanics driving mechanism to link on rotor 7 outer cylinders, have the helical chute 22 of sealing on the inwall, rotor is installed on the stator by bearing 14, a plunger 15 is respectively arranged in cylinder, plunger two ends respectively have piston ring 18, be equipped with the projection vertical with plunger on the neutral position of plunger, the straight runner 23 that projection is passed on the cylinder is embedded in the helical chute of rotor inner wall.Each is housed on the projection overlaps 21 with straight sliding sleeve 20 and sideslip that straight runner contacts with the helical chute.Stator is by pressing volution 17 fixing with mounting 6, and rotor also compresses on the axial position that is limited in stator from two ends according to the main shaft 13 that passes the stator axle center with the pump housing 5, end cap 19, pad 3, flat nut 2, nut 9.Wherein have spacing shelves to enclose on the stator, an end that encloses at the nothing shelves behind the rotor of packing into also adds a gland 8.Between the end cap at two ends and the pump housing, an intake and exhaust seat 4 is arranged respectively, the suction valve 12 and the outlet valve 11 that communicate with cylinder are respectively arranged on the intake and exhaust seat, suction valve connects empty, outlet valve leads to the main exhaust hole on the outlet pipe that the alignment of shafts is left, outlet pipe one end sealing on the main shaft, the other end is drawn hose coupling 1 is housed.

The plunger pump that present embodiment proposed, epitrochanterian gear rotates a week to 5 each reciprocating action of a plunger once, the gas pulses of being carried is overlapped by 10 small echos and constitutes, present wave mode comparatively stably, and the efficient of motor output power and mechanical efficiency are also carried out simultaneously because of suction, balanced in the difference in size of the required merit of suction, improve and exist greatly.

Claims

1, a kind of plunger pump has cylinder and plunger, it is characterized in that cylinder has one outward according to shaft axis rotation and the shaft axis rotor parallel with the cylinder center line, and rotor inner wall has the helical chute of sealing.One projection is arranged on the cylinder of plunger, and this projection is passed the straight runner that cylinder upper edge bus opens and is trapped in the helical chute of rotor.

2, plunger pump as claimed in claim 1 is characterized in that cylinder and plunger have at least two pairs to be set up in parallel on a stator, and the straight runner on the cylinder is on same circumference, and stator and pump seat are fixed.

3, plunger pump as claimed in claim 1 or 2 is characterized in that cylinder is directly to punch to form on the stator of cylindrical shape.