CN203906204U - Electromagnetic plunger pump - Google Patents

Abstract

The utility model discloses an electromagnetic plunger pump, which is arranged on a machine base. The plunger pump includes a plunger cylinder. The plunger cylinder includes a cylinder body fixed on the machine base, and can be The plunger assembly is slidably arranged on the base, the plunger assembly includes a plunger, a permanent magnet fixed at one end of the plunger, and the other end of the plunger is tightly fitted on the and can slide axially relative to the cylinder, the plunger pump also includes an electromagnetic driving device for driving the plunger assembly to slide axially along itself, the electromagnetic driving device includes an electromagnetic coil, An iron core fixedly passed through the electromagnetic coil, the axis line of the iron core and the axis line of the plunger assembly are parallel to each other, the end of the iron core and the end of the permanent magnet Adjacent to the arrangement, the electromagnetic force generated by the electromagnetic drive device drives the plunger assembly to reciprocate, so that the plunger pump can continuously complete oil suction and oil supply.

Description

An electromagnetic plunger pump

technical field

The utility model relates to an electromagnetic plunger pump.

Background technique

At present, in the hydraulic pump, the plunger pump has been widely used for its simple working principle. The principle is: when the driving force drives the plunger to reciprocate in the plunger hole of the cylinder, the plunger and the cylinder form The volume of the closed working chamber changes, so as to realize the process of oil absorption and oil discharge. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. Therefore, the plunger pump is widely used in the industrial field, especially in the field of high pressure and ultra-high pressure hydraulic transmission, the plunger pump occupies an irreplaceable position. The plunger pump can be divided into radial type and axial type according to the different arrangements of the plunger in the cylinder.

The plungers of the radial piston pump are installed radially in the cylinder body, and the cylinder body is driven by the prime mover to rotate, so the cylinder body is generally called the rotor. When doing clockwise reverse rotation, due to the eccentricity between the rotor and the stator, the plunger protrudes outward when passing through the upper half cycle, and the working volume in the oil cylinder gradually increases to form a partial vacuum, so it passes through the oil hole on the bushing. Suction oil from the oil suction port of the oil distribution shaft; when it turns to the second half cycle, the inner wall of the stator pushes the plunger back, and the working oil chamber in the oil cylinder gradually becomes smaller, so that the hydraulic oil flows out to the oil pressure port of the oil distribution shaft, and the rotor rotates one circle , each oil cylinder absorbs oil and presses oil once, and the rotor rotates continuously to complete the oil delivery work continuously.

The plunger of the axial piston pump is installed in the oil cylinder body and distributed evenly along the circumferential direction. The oil cylinder body is rotated by the drive shaft, and the oil supplied by the low-pressure oil pump enters the oil cylinder through the oil suction window on the oil distribution plate, so that one end of the plunger is tightened. Attached to the swash plate, the oil distribution plate and the swash plate are fixed. When the transmission shaft drives the oil cylinder to rotate, under the action of the low-pressure oil pan, the plunger makes a reciprocating linear motion in the oil cylinder. When the plunger protrudes from the oil cylinder, it sucks low-pressure oil through the oil distribution plate. When the disc is pressed into the oil cylinder, high-pressure oil is output through the oil pressure window on the oil distribution plate. Every time the oil cylinder body rotates once, each plunger moves back and forth once to complete a process of oil absorption and discharge. If the transmission shaft drives the cylinder body to run continuously, it will Can output pressure oil continuously.

However, whether it is a radial piston pump or an axial piston pump, its structure is relatively complicated, it takes up a large space, and its production cost is also high.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings of the prior art and provide an electromagnetic plunger pump using electromagnetic force as the driving force.

For achieving the above object, the technical scheme that the utility model adopts is:

An electromagnetic plunger pump, which is arranged on a machine base, the plunger pump includes a plunger cylinder, and the plunger cylinder includes a cylinder body fixed on the machine base, which can slide axially on itself The plunger assembly on the base, the plunger assembly includes a plunger, a permanent magnet fixed at one end of the plunger, and the other end of the plunger is tightly fitted in the cylinder body and can be Sliding axially relative to the cylinder body, the plunger pump also includes an electromagnetic driving device for driving the plunger assembly to slide axially along itself, the electromagnetic driving device includes an electromagnetic coil fixedly passed through the For the iron core in the electromagnetic coil, the axis line of the iron core is parallel to the axis line of the plunger assembly, and the end of the iron core is adjacent to the end of the permanent magnet.

Preferably, the plunger includes a mounting portion, a plunger head fixed at one end of the mounting portion, the plunger head is tightly fitted in the cylinder body and can slide axially relative to the cylinder body, The installation part is slidably installed on the base.

Further preferably, an opening groove is formed on the installation part, and the permanent magnet is accommodated in the opening groove.

Further preferably, the diameter of the installation part is larger than the diameter of the plunger head.

Further preferably, the installation part is integrally provided with the plunger head.

Preferably, the axis of the iron core and the plunger assembly are distributed along the same straight line.

Preferably, there are two plunger cylinders, and the two plunger cylinders are symmetrically arranged on both sides of the iron core, and the permanent magnets in the two plunger cylinders are adjacent to the iron core The magnetic poles at the ends are opposite.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: the electromagnetic plunger pump of the utility model uses electromagnetic force to drive the plunger assembly of the plunger cylinder, so that the plunger assembly is relatively The continuous oil suction and oil supply process of the plunger pump is realized by the reciprocating motion, and the structure is simple, the space occupied is small, the production cost is low, and the energy utilization efficiency is high.

Description of drawings

Accompanying drawing 1 is the internal structure schematic diagram one of electromagnetic plunger pump of the present utility model;

Accompanying drawing 2 is the internal structure schematic diagram two of electromagnetic plunger pump of the present utility model;

Among them: 1. Electromagnetic drive device; 11. Electromagnetic coil; 12. Iron core; 2. Plunger assembly; 21. Installation part; 22. Plunger head; 23. Permanent magnet; 3. Cylinder body; 4. Fuel tank; 5 . The first one-way valve; 6. The second one-way valve.

Detailed ways

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Referring to the electromagnetic plunger pump shown in Fig. 1 and Fig. 2, it is located on the machine base. The plunger pump includes a plunger cylinder, the plunger cylinder includes a cylinder body 3 fixed on the machine base, a plunger assembly 2 that can slide axially along itself on the machine base, and the plunger assembly includes a plunger And the permanent magnet 23 fixed on one end of the plunger, the other end of the plunger is tightly fitted in the cylinder 3 and can slide axially relative to the cylinder 3 . Here, the plunger includes a mounting portion 21 and a plunger head 22 disposed at one end of the mounting portion 21 . The mounting portion 21 and the plunger head 22 can be integrally formed, or can be separated and then fixedly connected together. The diameter of the plunger head 22 matches the bore diameter of the inner cavity of the cylinder body 3 , and the plunger head 22 is tightly fitted in the cylinder body 3 and can be axially slid relative to the cylinder body 3 . The installation part 21 is slidably arranged on the base, and the installation part 21 is provided with an opening groove, wherein the opening of the opening groove is located at the shaft end of the installation part 21, and the permanent magnet 23 is accommodated in the opening groove.

The electromagnetic plunger pump also includes an electromagnetic drive device 1 for driving the plunger assembly 2 to slide axially along itself. Iron core 12 in 11. The plunger assembly 2 is arranged on one side of the electromagnetic drive device 1, the permanent magnet 23 on the plunger assembly 2 is adjacent to one end of the iron core 12, and the axis line of the plunger assembly 2 is along the axis line of the iron core 12. distributed along the same line. When the electromagnetic coil 11 is supplied with electric current, the iron core 12 will obtain magnetism, and by changing the direction of the current, the magnetic properties at both ends of the iron core 12 can be changed.

When the magnetism between the iron core 12 and the permanent magnet 23 is different, an attractive force is generated between the permanent magnet 23 and the iron core 12 to attract each other, the plunger assembly 2 moves toward the iron core 12, and the volume in the cylinder body 3 increases gradually. Large, under the action of pressure, the hydraulic oil in the oil tank 4 enters the cylinder 3 through the first one-way valve 5, that is, the cylinder 3 absorbs oil; when the magnetism between the iron core 12 and the permanent magnet 23 is the same, the permanent magnet 23 and the iron core 12 generate a repulsive force, the plunger assembly 2 moves away from the iron core 12, the volume in the cylinder 3 gradually decreases, and the hydraulic oil in the cylinder 3 is squeezed and enters through the second one-way valve 6 to be input in the system piping.

In order to improve the mechanical efficiency of the electromagnetic plunger pump, in this embodiment, there are two plunger cylinders, and the two above-mentioned plunger cylinders are symmetrically arranged on both sides of the iron core 12, and the permanent part of the two plunger cylinders is The magnetic poles of the ends of the magnet 23 adjacent to the iron core 12 are oppositely arranged.

For example, in Fig. 1 and Fig. 2, if in the plunger cylinder on the left side, the end of the permanent magnet 23 near the iron core 12 is N pole, then in the right plunger cylinder, the end of the permanent magnet 23 near the iron core 12 It should be set as S pole. In this way, when the electromagnetic coil 11 is energized, if the left side of the iron core 12 is an S pole, then its right side is an N pole. The core 12 is magnetically attracted, the plunger assembly 2 on both sides slides away from the cylinder body 3, and the volume in the cylinder body 3 on both sides gradually increases to carry out oil absorption work; when the electromagnetic coil 11 is fed with a reverse current, the iron core The left side of 12 is N pole, and its right side is S pole, like this. A repulsive force is generated between the iron core 12 and the permanent magnets 23 on both sides, and the repulsive force makes the plunger assembly 2 on both sides slide towards the cylinder body 3, and the volume in the cylinder body 3 on both sides gradually decreases and moves toward the input cylinder. System pipeline oil supply.

To sum up, in the electromagnetic plunger pump of the present invention, the plunger assembly 2 of the plunger cylinder is driven by electromagnetic force, so that the plunger assembly 2 reciprocates relative to the cylinder body 3 to realize continuous oil suction and oil supply of the plunger pump The process has the advantages of simple structure, small space occupation, low production cost and high energy utilization efficiency.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

The utility model discloses an electromagnetic plunger pump, which is arranged on a machine base. The plunger pump includes a plunger cylinder. The plunger cylinder includes a cylinder body fixed on the machine base, and can be The plunger assembly is slidably arranged on the base, the plunger assembly includes a plunger, a permanent magnet fixed at one end of the plunger, and the other end of the plunger is tightly fitted on the and can slide axially relative to the cylinder, the plunger pump also includes an electromagnetic driving device for driving the plunger assembly to slide axially along itself, the electromagnetic driving device includes an electromagnetic coil, An iron core fixedly passed through the electromagnetic coil, the axis line of the iron core and the axis line of the plunger assembly are parallel to each other, the end of the iron core and the end of the permanent magnet Adjacent to the arrangement, the electromagnetic force generated by the electromagnetic drive device drives the plunger assembly to reciprocate, so that the plunger pump can continuously complete oil suction and oil supply.

Claims (7)

1. A kind of electromagnetic plunger pump, is located on the support, and described plunger pump comprises plunger cylinder, it is characterized in that: described plunger cylinder comprises the cylinder body that is fixed on the described support, can move along itself A plunger assembly axially slidably arranged on the base, the plunger assembly includes a plunger, a permanent magnet fixed at one end of the plunger, and the other end of the plunger is tightly fitted on the In the cylinder and can slide axially relative to the cylinder, the plunger pump also includes an electromagnetic driving device for driving the plunger assembly to slide axially along itself, the electromagnetic driving device includes an electromagnetic coil 1. An iron core fixedly installed in the electromagnetic coil, the axis line of the iron core and the axis line of the plunger assembly are parallel to each other, the end of the iron core and the end of the permanent magnet set adjacent to each other. 2. The electromagnetic plunger pump according to claim 1, characterized in that: the plunger includes a mounting portion, a plunger head fixed at one end of the mounting portion, and the plunger head is tightly fitted on the mounting portion. The cylinder body is axially slidable relative to the cylinder body, and the mounting part is slidably mounted on the machine base. 3 . The electromagnetic plunger pump according to claim 2 , wherein an opening groove is formed on the installation part, and the permanent magnet is accommodated in the opening groove. 4 . 4. The electromagnetic plunger pump according to claim 2, characterized in that: the diameter of the installation part is larger than the diameter of the plunger head. 5. The electromagnetic plunger pump according to claim 2, characterized in that: the installation part is integrally provided with the plunger head. 6. The electromagnetic plunger pump according to claim 1, characterized in that: the iron core and the axial center of the plunger assembly are distributed along the same straight line. 7. The electromagnetic plunger pump according to any one of claims 1-6, characterized in that there are two plunger cylinders, and the two plunger cylinders are symmetrically arranged on both sides of the iron core, And the magnetic poles of the ends of the permanent magnets near the iron core in the two plunger cylinders are opposite.