JPH01219400A - Vibrating pillar pump - Google Patents

Abstract

PURPOSE:To make the maximum vibrator force of a pump chageable by forming the pump such that plural units, which each comprise a stator consisting of an electromagnetic yoke and electromagnetic coils surrounding the exterior of an amarture consisting of a vibrating pipe, permanent magnets and spacers, align axially of a pipe. CONSTITUTION:Outside a vibrating pipe 1 of a magnetic material, permanent magnets 4 align by differing from one another directions of magnetic poles and are fixed axially via non-magnetic spacers 5 to thereby form an armature. As for a stator, a unit is formed by grooves 12 on inner perimeter of a U-shaped electromagnetic yoke 6 and stator coils 7 annularly surrounding the vibrating pipe, and several such units are joined axially of the pipe. In operating the above-mentioned mechanism, when alternating electric currents are passed to the electromagnetic coils 7 in opposite directions with each other coil, axial electromagnetic force generated by each of the stator magnetic poles 6 and 7 gives iterative thrust axially of the amarture to move the vibrating pipe 1 virtically, and, as a result, a pump function which is almost the same as the conventional one is effected. By multiplying the electromagnetic yokes axially, the maximum vibratory force becomes changeable and the maximum pumping up force can be easily changed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vibrating column pump, that is, one end is immersed in water and the other end is placed in the air, and the other end is elastically contacted by a spring. The present invention relates to a pump that vibrates a pipe (vibrating pipe) in the longitudinal direction, which is connected to a discharge side liquid guide pipe through a valve plate, and lifts liquid through the inside of the pipe.

[Conventional technology]

Conventionally, this type of vibrating column pump uses (a) a device in which a rotating body with unbalanced weight is rotated by an electric motor or an electromagnet as the excitation means for the vibrating tube, and a vibrating tube is attached to the output part of these vibrators. There are some that have a fixed installation. (Unexamined Japanese Patent Publication No. 58-
144700, Japanese Patent Application Laid-open No. 183900/1983) Also, in order to obtain a large stroke vibration of the vibrating tube from a small stroke excitation source, an excitation means is attached to one end of a leaf spring on the vibrating tube. There is a structure in which electromagnets are fixedly fixed to face each other with a leaf spring or an elastic body fixed to the leaf spring in between. (Refer to Japanese Unexamined Patent Publication No. 61-275600.) Also, (c) the excitation means may be configured such that one magnet of an electromagnet having opposite poles via a permanent magnet and a spring is fixed to the vibrating tube, and the other magnet is fixedly installed. By energizing the opposite pole of the electromagnet so that it has the same frequency polarity as the permanent magnet, the magnet fixed to the vibrating tube is moved up and down to vibrate the vibrating tube and pump water. There is something that I tried to do. (Refer to Japanese Utility Model Application Publication No. 110900/1983) (2) The excitation means is a sliding device in which the thrust increases from the side with larger slip toward the side with smaller slip, and the maximum thrust is near zero slip. A linear motor is constructed by fixing the stator of a linear motor with thrust characteristics to a stationary part, placing a vibrating tube opposite the stator, and supporting the vibrating tube with a bearing so that it can move freely in the axial direction. A self-supporting vibration system is established due to the thrust-slip characteristics of Some are designed to discharge through a valve plate that is in elastic contact with the upper end of the tube.

(Utility Model Application Publication No. 60-197300) [Problems to be Solved by the Invention] In the above-mentioned conventional device, the method (a) generates a necessary displacement of the vibrating column, for example, 10 mm, and changes the vibration frequency to a required frequency, e.g. It is difficult to set the frequency to 60Hz, and even if manufactured, the excitation means would be large.Also, since the vibration tube is fixed to the output part of the exciter, the excitation device and pump are separate devices. There was a problem in that it was impossible to make it into a compact shape.

Further, the above (b) and (c) have a problem in that it is relatively difficult to control the amplitude and excitation waveform.

In addition, although the above (d) has good efficiency because it forms a self-exciting system, it suffers from problems in vibration controllability.

- The present invention has been made in view of the problems of the prior art described above, and it is possible to eliminate leakage, generate a large excitation force, and furthermore, by unitizing the yoke, it is possible to set the maximum excitation force. The technical problem (object) is to provide a vibrating column pump that is easy to use and has simplified component shapes.

(Means for Solving the Problems) In order to solve the above technical problems, the present invention opens into a liquid conduit through a valve whose lower end is immersed in the liquid and whose upper end is in elastic contact. In a vibrating column pump equipped with a vibrating means for vibrating a vibrating tube in the longitudinal direction, a cylindrical soft magnetic material is attached to the outer circumference of the vibrating tube, and permanent magnets with different magnetic poles magnetized in the radial direction are further attached to the outer circumference of the vibrating tube. are alternately arranged at intervals in the tube axis direction to form a mover, and an electromagnetic coil is installed outside the mover in a U-shaped electromagnetic yoke made of a soft magnetic material to form a stator. The present invention is characterized in that a plurality of vibrating means are arranged and fixed in the axial direction of the tube so as to reciprocate the movable element including the vibrating tube in the axial direction so as to be slidable in the axial direction.

In addition, as mentioned above, the electromagnetic yoke with a U-shaped cross section and an electromagnetic coil arranged inside it is made into a unit, and the units are stacked in the axial direction, and the maximum excitation force generated can be varied by the number of stages. It is a feature.

(Function) In the vibrating column pump of the present invention, a pair of permanent magnets having different lowest magnetization directions and two sets of electromagnetic yoke units are prepared. In this case, the movable element is energized by passing alternating current in opposite directions through the two coil units. The excitation amplitude is controlled by controlling the coil current.

If a stationary liquid lift pipe is connected to the lower end of the tube axis on the opposite side to the upper end of the tube axis where the control valve (valve plate) of the vibrating tube, which is the mover, is in elastic contact, the reciprocating movement of the vibrating tube will cause the inside of the stationary liquid lift pipe to The liquid is pumped up, passes through a control valve (valve plate) at the end of the vibrating tube, and is discharged into the liquid guide tube.

In order to increase the discharge pressure of the vibrating column pump, the excitation force may be increased. Therefore, by increasing the number of magnetized electromagnetic yokes and the permanent magnets facing them,
The excitation force is increased or decreased in proportion to the number of electromagnetic units.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

In the figure, reference numeral 1 denotes a vibrating tube made of a magnetic material, and a plate-shaped valve 3, which is resiliently urged by a spring 2, is press-contacted (elastically connected) to the upper end of the vibrating tube 1. A permanent magnet 4 magnetized in the radial direction is fixed to the outer periphery of the vibrating tube 1 in the tube axis direction via a non-magnetic spacer 5. The permanent magnets 4 having different magnetic pole directions are arranged alternately, and the vibrating tube 1, the permanent magnets 4, and the spacer 5 constitute a mover. Note that when the vibrating tube 1 is made of a non-magnetic material, a cylindrical soft magnetic material is attached to the outer periphery.

On the other hand, on the stator side, a stator coil 7 is installed inside a U-shaped electromagnetic yoke 6 (inner peripheral groove) made of a magnetic material, and a vibration tube 1
The tube is wound in a ring shape around the center, and this constitutes one unit, and in this embodiment, it is connected in four stages in the tube axis direction.

A spacer 8 made of a non-magnetic material is interposed between each magnetic pole on the inner circumference of the electromagnetic yoke 6 to seal between the stator coil 7 side and the movable element side. The mover is a spring mounted between the lower end of the vibrating tube 1 and the inner wall of a stationary liquid lift tube 10, which is connected to the lowermost end of the electromagnetic yoke 6 and whose lower end suction port 9 is inserted into the liquid during use. 11, the mover is supported so as to maintain the center stroke of the operating stroke in the tube axis direction when it is at rest (when the operation is stopped), and the mover is inserted through the stator with a small gap. . In addition, 12 in the figure is a discharge casing having a discharge port 13, and supports one end of the spring 2 that presses the valve 3.

FIG. 2 is a sectional view of the main part of the vehicle body of the magnetic pole unit. On the stator side, the stator magnetic pole is formed by a U-shaped electromagnetic yoke 6 made of a yoke made of magnetic material and a stator coil. The movable element side is composed of a permanent magnet 4 magnetized in the radial direction and a spacer 5 made of a non-magnetic material.

The above magnetic pole units are usually connected in two or more stages.

Also, the overlap IL between the stator magnetic pole 6.7 and the permanent magnet 4 is
r is set equally at both ends of the permanent magnet 4 to enable unitization.

Since it is configured as described above, when an alternating current is passed alternately in opposite directions to each electromagnetic coil 7 during operation, the electromagnetic force in the tube axis direction generated by each stator magnetic pole 6.7 magnetizes in the radial direction. A reciprocating thrust in the tube axis direction is applied to a movable element in which permanent magnets 4 having different magnetic poles are alternately arranged, and the vibrating tube 1 is moved up and down. The excitation amplitude is controlled by controlling the coil current.

Figure 3 is a displacement-thrust static characteristic diagram with the horizontal axis representing the axial displacement of the mover 1.4.5 from the neutral position and the vertical axis representing the thrust force. -The part where the thrust is in the opposite direction is shown in the second quadrant, and the displacement - where the thrust is in the same direction is shown in the second quadrant.Basically, the displacement shown in the first quadrant -
Used where the thrust is in the opposite direction.

Figure 4 is a diagram showing the relationship between the number of stages and thrust, with the horizontal axis representing the number of unit stages and the vertical axis representing the thrust acting on the vibrating tube at the neutral position, showing that the thrust changes in proportion to the number of stages. ing. Therefore, by adjusting the number of units,
By changing the magnitude of the thrust acting on the vibrating tube, it is possible to change the maximum amount of water pumped.

The vertical movement of the vibrating tube 1 performs the following pumping action, which is almost the same as that of the conventional pump.

■ When valve 3 moves following vibrating tube 1: (i)
Rising process of liquid level When the valve 3 follows the vibrating tube 1 and moves the vibrating tube up and down, the liquid level in the tube also moves up and down as the pressure of the air column inside the tube fluctuates. This vertical movement of the liquid level is accompanied by a type of spring-type vibration phenomenon consisting of the elasticity of the air column and the mass of the liquid column. Therefore, since the damping due to friction etc. is small, the vibration of the vertical movement of the vibrating tube 1 When the pipe is set to the natural frequency of the air column-liquid column system inside the pipe, the pressure in the air column inside the pipe becomes extremely high. Therefore, if the valve 3 is opened at a pressure higher than a certain set pressure, the valve will open when the air column pressure in the pipe exceeds the set pressure of the valve, and the upper limit of the air column pressure will be maintained at the valve set pressure. The average value of the air column pressure per shaking cycle becomes less than atmospheric pressure, and the liquid column rises corresponding to the pressure decrease. This occurs continuously and the liquid level rises to the upper end of the vibrating tube 1.

(if) Liquid discharge process After the liquid level reaches the upper end of the vibrating tube 1, the inertial force acting on the liquid column in the tube from the vibrating tube 1 causes the liquid column to push up the valve and the liquid to move from the upper end of the vibrating tube 1. leak.

■ When the valve moves without following the vibration pipe 1: (i)
When the vibrating tube 1 moves downward in FIG.
Valve 3 does not follow this and moves downward with a delay, and at the upper end,
A slight gap is created between the vibrating tube 1 and the valve 3.

(if) When the vibration tube 1 reaches the lower limit, the valve 3 catches up and closes the valve port.

(i i i) Next, when the vibrating tube 1 rises with the valve port closed by the valve 3, the liquid rises together with the vibrating tube 1.

(iv) When the vibrating tube 1 further descends, the liquid in the vibrating tube 1 does not go down much due to the influence of the inertia of the liquid.

By repeating these operations, the vibrating tube 1 will eventually become
When the vibrating tube 1 descends with the liquid reaching its upper end, the liquid overflows into the discharge casing 12 and flows in the direction of the discharge port 13, and then continues to be pumped and discharged. The Rukoto.

(Effects of the Invention) Since the present invention is configured as described above, the following effects are achieved.

On the outer periphery of the vibrating tube, permanent magnets with different magnetic poles magnetized in the radial direction are arranged alternately at intervals in the tube axis direction via a cylindrical soft magnetic material to serve as a movable element, and a soft magnetic material is placed on the outside of the movable element. A plurality of stators each having an electromagnetic coil installed in a U-shaped electromagnetic yoke are fixed in the tube axis direction, and an excitation means is provided to reciprocate the movable element slidably in the tube axis direction. The stator coil side and the movable element side are sealed off with a small gap, making it possible to prevent pumped liquid from leaking and downsizing the device, thereby expanding the range of applications of the vibrating column pump.

In addition, by making the electrode yoke of the vibration excitation unit into units, stacking the units in the axial direction, and making the maximum excitation force variable depending on the number of stages, it is possible to easily change the maximum water pumping amount of the vibration column pump. In addition, maintenance becomes easy, productivity can be improved, and the range of applications can be expanded.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a vibrating column pump showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Fig. 3 shows the displacement and thrust of the vibrating tube shown in Fig. FIG. 4 is a diagram showing the relationship between the number of unit stages and thrust at the center position. 1... Vibration tube, 2... Spring, 3... Valve, 4...
Permanent magnet, 5... Spacer, 6... U-shaped electromagnetic yoke, 7... Electromagnetic coil, 8... Spacer, 9... Suction port, 10... Stationary water pump, 11... Spring, 12.
...Discharge casing. Figure 3

Claims (1)

[Claims] 1. A vibrating tube whose lower end communicates with the liquid and whose upper end is hermetically inserted into a liquid guide pipe and opens into the liquid guide pipe, and a fixed part. In a vibrating column pump, the vibration column pump is equipped with a valve plate whose one end is in contact with the spring and whose other end is in contact with the upper end of the vibrating tube, and an excitation means for vibrating the vibrating tube in the longitudinal direction. A cylindrical soft magnetic body is attached to the outer periphery of the tube, and permanent magnets magnetized in the radial direction and having different magnetic poles are arranged alternately at intervals in the tube axis direction on the outer periphery to form a mover. A plurality of electromagnetic coils are installed in a U-shaped electromagnetic yoke made of soft magnetic material to serve as a stator, and a plurality of them are arranged and fixed in the tube axis direction, and the movable element including the vibrating tube is A vibrating column pump characterized by having a vibrating means configured to slidably reciprocate in the direction of a tube axis. 2. The stationary side electromagnetic yoke of the vibration excitation means has a U-shaped cross section including the axis, and an electromagnetic coil is arranged inside the U-shape to form the electromagnetic yoke into a unit, and the units are stacked in the axial direction.
2. The vibrating column pump according to claim 1, wherein the maximum excitation force generated is made variable depending on the number of stages.