KR20190108529A - Volumetric pump with rotary displacement of pump rotor as electromagnet in step motion - Google Patents

Abstract

The present invention relates to a volumetric pump for injecting a liquid into an empty portion between a cylinder and a rotor in a closed cylinder and compressing a volume to discharge the liquid. A symmetric-shaped closed pump cylinder to which an electromagnet is fixed and a pump rotor to which a neodymium permanent magnet is fixed are installed inside a pump cylinder. Rotation of the pump rotor is performed while an inner surface of the pump cylinder and an outer surface of the pump rotor slide by a magnetic force of a step motion controlled by a motion controller and a power supplier. Moreover, the volumetric pump can be sucked and discharged by the magnetic force.

Description

  Volumetric pump with rotary displacement of pump rotor as electromagnet in step motion}

According to the present invention, a fluid having a certain viscosity is sucked by self-absorption to maintain a degree of vacuum at the inlet, and discharge property for pushing the sucked fluid into a volume change, abrasion resistance to the transport material, and the discharge flow rate of the fluid are kept constant so that It is to satisfy the condition of minimization and no leakage by corrosion.

More specifically, the present invention relates to a volumetric pump that is discharged by putting a liquid in a space between a pump cylinder and a pump rotor in a sealed pump cylinder and compressing the volume.

In general, volumetric pumps are driven on the principle of generating pumping capability from volume changes due to rotation.

 The gear pump is a pump that transfers the working fluid trapped in the space between the teeth of the gear by engaging the two gears with each other. The gear pump has a large suction head and is suitable for the transfer of high viscosity liquid.

A vane pump is a pump that transfers working fluid trapped in space by making negative pressure by radial protrusion of the blade by centrifugal force acting on the blade during rotation.It is widely used due to the advantage that the discharge pressure is not affected by the rotation speed. .

A tube pump typically has a rotor, a motor for rotating the rotor, and a plurality of rotors installed in the rotor, the rotor being rotated while the rotor is pressed by closing a tube disposed along the outer circumference of the rotor to perform liquid supply. It is.

Diaphragm pump is a method in which the external fluid is sucked into the inside and discharged to the outside by the pressure change in the space between the diaphragm and the fluid housing by the forward and backward movement of the diaphragm connected to the connecting rod as the connecting rod is moved back and forth by the motor. Is done.

The twin pump has an operating range in which the upper and lower pistons have an operating range in which the upper and lower pistons are inclined at an up and down and a predetermined angle in the volume chamber, while injecting fluid from the inlet provided at one side of the cylinder block while changing the volume of the volume chamber. These pump the fluid as a volume change of the volume chamber by the upper and lower pistons operated in the volume chamber, and it is possible to pressurize the fluid through the discharge port provided on the other side of the cylinder block. That is, the crankshaft installed from the gearbox is to be able to implement the pumping by operating the upper, lower piston by the amount of eccentricity.

These volumetric pumps have unique design constraints and complex impeller and impeller chamber structures, and the power transmission shaft is exposed to the fluid. The tube pump has a short life due to the rapid deterioration of the tube which is repeatedly pushed by the roller by the roller, and the diaphragm, which is repeatedly sucked and discharged, is torn by bending, and the check valve acting on the suction and discharge is blocked. Its use is limited due to malfunction or excessive movement noise of check valve.

Therefore, in the present invention, the electromagnet of the hybrid step operation is fixed to the outer side of the symmetrical closed pump cylinder, and the pump cylinder is fixed to the inner cylinder of the neodymium permanent magnet on the bicylinder cylinder. The rotor pivots while the inner side and the outer side of the pump rotor slide. At this time, the bicylinder of the pump rotor has the same amount of eccentricity with respect to the respective cylindrical shafts (10) and (20), and rotates in opposite directions by maintaining equidistant circumferences around these pump cylinder shafts (30) and (40). Move along In addition, the rotor relates to a volumetric pump in which a motion controller (controller) and a motor drive (power supply) are integrated so that the suction and discharge strokes are operated by dividing the inner space of the cylinder into three or two parts.

This pump is very simple in construction and manufacture of pump cylinder and rotor that cause fluid intake and discharge, and it moves by magnetic force, so it is unnecessary to check the shaft that transmits power and the check valve that is involved in aspiration. to provide.

In addition, by combining four volumetric pump units and controlling them with one controller, it provides a high capacity and powerful pumping action with free flow rate control, minimizing pulsation, vibration and noise.

In order to achieve the above object, the present invention provides a control panel integrated with the motion controller 100, the power supply 110, and the Bluetooth communication module 120 shown in FIG. 1;

As shown in FIG. 5B, a symmetrical cylinder includes a first electromagnet 220 for generating a magnetic force and a second electromagnet 230 for creating a magnetic force of an electrode opposite to the first electromagnet 220 and a divider 240 for dividing the same. Preparing a fixed pump cylinder 200 by putting the liquefied resin 250 into the 210 and curing it;

As shown in FIG. 5A, the pump cylinder 200 has a permanent cylinder 320 of neodymium and an iron core 330 which transmits a magnetic force to a twin-cylindrical cylinder 310, and the liquefied resin is fixed and fixed on both sides. Manufacturing a pump rotor 300 closed by two lids 340;

In addition, both sides of the pump cylinder 200 have a suction port 410 and a discharge port 420 described in Figure 7a, there is a groove 430 for fixing the packing 600 for sealing the pump cylinder 200, the first There is a groove 440 for fixing the electric wire for supplying power to the electromagnet 220 and the second electromagnet 230, the groove 450 for fixing the central axis 500 for inducing the movement of the pump rotor 300 Manufacturing a friction plate 400 having 14 holes for assembly bolts 460 and symmetrical on both sides thereof;

The central shaft 500 in the center of the center of the pump cylinder 200 shown in Figure 5e is the outlet groove in the middle of the shaft so that the fluid in the central space of the pump rotor 300 moves in the space when the pump rotor 300 flows Manufacturing a central axis 500 characterized in that it has a 510;

5E and 6A, a packing 600 is inserted into the fluid contact surface of the pump cylinder 200 to prevent the fluid from leaking to the joint surface of the friction plate 400 and the pump cylinder 200.

6A and 6B, two metal plates 700 are arranged outside the friction plate 400 to assemble and fix the components constituting the volumetric pump shown in FIGS. 6A and 6B, and are assembled by fourteen bolts 710 and nuts 720. Manufacturing step;

Meanwhile, as shown in FIG. 5C, the first electromagnet 220 according to the present invention has a plurality of iron cores 221 processed in a specific shape protruding seven from the left side, and seven iron core coatings 223 for protecting the coil. In addition, seven coils 225 constitute an electromagnet, and when the power is supplied, S poles are formed in the coils in the direction of the pump rotor 300. The first electromagnet 220 has a plurality of iron cores 222 processed in a specific shape projecting seven in the right side, there are seven iron core coating 224 to protect the coil, seven coils 226 When the power is supplied, the central coil 226-4 'is configured to form the N pole, and the other six coils are configured to form the S pole.

In addition, the second electromagnet 230 symmetrically based on the first electromagnet 220 and the divider 240 has a plurality of iron cores 231 processed in a specific shape protruding into seven on the left side, and for protecting the coil. There are seven iron core coatings 233, and seven coils 235 constitute an electromagnet, and when the power is supplied, N poles are formed in each coil in the direction of the pump rotor 300. The second electromagnet 230 has a plurality of iron cores 232 processed to a specific shape protruding seven in the right side, there are seven iron cores 234 to protect the coils, seven coils 236 This electromagnet is constituted, and at the time of power supply, the central coil 236-4 'is configured such that the S pole is formed, and the other six coils are configured so that the N pole is formed.

The motion controller 100 operating the pump rotor 300 by the first electromagnet 220 and the second electromagnet 230 uses a 5 volt direct current (DC) power source and controls the digital pulse type. That is, the pump rotor 300 performs the correct rotational motion by the rotation angle corresponding to one step per digital pulse. In addition, the continuous motion is maintained by a reset timer (Wathdog timer), and the power supply 110 uses a DC (DC) power supply of 6 volts (V) ~ 24 volts (V), SSR (semiconductor relay) / Solid state relay).

The volumetric pump having the rotary displacement of the pump rotor according to the present invention as an electromagnet of hybrid step operation provides the following effects.

Firstly, the pump rotor, which produces the rotational displacement, is moved by magnetic force, thus providing a volumetric pump that has no shaft for transmitting power and no corrosion of the shaft and leakage of fluid due to the shaft.

Second, the rotation speed is controlled by the pulse frequency (digital signal), the pump rotor rotates at a small step angle of the hybrid step operation, and the magnet is held even when the electromagnet of the pump cylinder has no magnetic force by using a permanent magnet in the pump rotor. Because of the self-holding torque and detent torque, it is widely used in precision instruments requiring precise flow and pressure characteristics.

Third, it combines four pumps in volume and controls them with a microcontroller that executes one computer command and provides high capacity and powerful pumping action with free flow control and minimized pulsation, vibration and noise. .

Fourthly, when the motion controller is connected to the Bluetooth module, the smartphone is connected via the software serial library to input the coding value through the Bluetooth and the wireless communication. to provide.

Fifth, parts in contact with fluids such as pump cylinders, pump rotors, friction plates, and packings are made of polyvinylidene fluoride-based fluorine resin-based materials, and are made of materials with excellent thermal, chemical and abrasion resistance. It is easily manufactured by System (CNC) processing or Computerized Numerical Control (CNC) processing, there are no valves involved in suction and discharge, and there is no damage of parts, so there is no restriction on the place of use due to strong chemical leakage.

Sixth, since the transfer capacity of the fluid is provided from the volume change, there is no restriction in the use place depending on the air content or the viscosity of the fluid.

1 is a schematic diagram showing a motion controller, a power supply, and a Bluetooth module.
Figure 2a is a block diagram showing the operating state of the electromagnetic force transmission and the pump rotor of the (one step) operation of the present invention.
Fig. 2B is a block diagram showing an operating state of the electromagnetic force transmission and the pump rotor in the (two step) operation of the present invention.
Figure 2c is a block diagram showing the operating state of the electromagnetic force transmission and the pump rotor of the (step 3) operation of the present invention.
Fig. 2D is a block diagram showing an operating state of the electromagnetic force transmission and the pump rotor in the (four step) operation of the present invention.
Fig. 2E is a block diagram showing an operating state of the electromagnetic force transmission and the pump rotor in the (5 step) operation of the present invention.
Fig. 2F is a block diagram showing an operating state of the electromagnetic force transmission and the pump rotor in the (6 step) operation of the present invention.
Figure 2g is a block diagram showing the operating state of the electromagnetic force transmission and the pump rotor of the (7 step) operation of the present invention.
Figure 2h is a block diagram showing the operating state of the electromagnetic force transmission and the pump rotor of the (8 step) operation of the present invention.
Figure 3a is a block diagram showing a state of a one-phase unipolar electromagnet control circuit of the present invention.
Figure 3b is a block diagram showing a state of the electromagnetic control circuit of the 1-2 phase unipolar system of the present invention.
Figure 3c is a block diagram showing the electromagnet digital output state of the one-phase unipolar system of the present invention.
Figure 3d is a block diagram showing the electromagnet digital output state of the 1-2 phase unipolar system of the present invention.
Figure 4a is a block diagram showing the operation state of the pump rotor of one volumetric pump unit of the present invention.
Figure 4b is a block diagram showing the electromagnet simultaneous operation state when operating the four volume pump unit of the present invention in combination.
Figure 5a is an exploded perspective view of the pump rotor according to the present invention.
Figure 5b is an exploded perspective view of the pump cylinder according to the present invention.
Figure 5c is an exploded perspective view of the first electromagnet of the present invention.
Figure 5d is an exploded perspective view of a second electromagnet of the present invention.
5E is a perspective view of other components of the present invention.
6A is an assembled perspective view of the first stage volumetric pump of the present invention.
6B is an assembled perspective view of four stages of the volumetric pump of the present invention.
7A is a top view of a volumetric pump subassembly of the present invention.
7B is a side view of a volumetric pump subassembly of the present invention.
Figure 8a is a plan view illustrating the production of a volumetric pump according to an embodiment of the present invention.
Figure 8b is a calculation of the discharge area of the volumetric pump in accordance with an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The DC power supply 5V is supplied to the motion controller 100 shown in Fig. 1 having an open source computing platform and software development environment based on a simple microcontroller board, and the DC power supply 6V ~ according to the digital output coding shown in Fig. 3C or 3D. 24V is connected to the power supply 110 specified in FIG. 1 to operate the volumetric pump by the electromagnetic force of the electromagnet. At this time, the operation and stop is controlled by a computer connected to a smart phone or USB terminal connected to the Bluetooth 120 module specified in FIG. The operation of the volumetric pump is performed sequentially with the eight steps specified in FIGS. 2A, 2B, 2C, 2D, 2E, 2F, 2G, and 2H.

The one-phase excitation unipolar method is described as follows.

One step is supplied with the positive (+) side power to the terminal of A specified in FIGS. 1 and 3A, and the 225-1 coil of the left side of the first electromagnet 220 and the 226-1 'coil of the right side of the pump rotor ( 300 flows from inside to outside and the S pole is formed. In addition, a current flows from the outside to the inside of the second electromagnet 230 at the left portion 235-1 coil and the right portion 236-1 'coil, and an N pole is formed. Therefore, the pump rotor 300 has the N pole of the permanent magnet 320 and the S pole of the first electromagnet 220, 225-1 coil and 226-1 'coil, the S pole of the permanent magnet 320, and the second. The N poles of the electromagnets 230 and 235-1 coils and 236-1 'coils are moved by the electromagnetic force to be pulled. At this time, the pump rotor 300 is externally operated on the central axis 500;

2 steps, 3 steps, 5 steps, 6 steps, 7 steps are operated in the same way as 1 step;

Step 4 is supplied with positive (+) side power to the terminal of D according to the H bridge circuit shown in FIGS. 1 and 3A, and the 225-4 coils on the left side of the first electromagnet 220 are inward to outward. The current flows through the S pole, and the 226-4 'coil on the right side flows from the outside to the inward direction and forms the N pole. In addition, the left portion 235-4 coil of the second electromagnet 230 flows current from the outside to the inward direction, and an N pole is formed, and the right portion 236-4 ′ coil has a current flowing from the inside to the outside and an S pole is formed. Therefore, an electromagnetic force is generated in which the N pole of the permanent magnet 320 in the pump rotor 300 and the S pole of the left first electromagnet 220 and the 225-4 coil are pulled, and the N pole and the permanent magnet of the permanent magnet 320 are generated. 1 Electromagnet 220 The electromagnetic force pushed by the N pole of the 226-4 'coil is generated. In addition, the S pole of the permanent magnet 320 in the pump rotor 300 and the N pole of the left second electromagnet 230, 235-4 coils are generated, and the S pole of the right permanent magnet 320 is generated. And an electromagnetic force pushed by the N pole of the right side second electromagnet 230 and the 236-4 'coil. The pump rotor 300 is circumscribed to the central axis 500 by the electromagnetic force is operated;

8 steps are provided with the positive (+) side power supply to the terminal of H according to the H bridge circuit shown in FIGS. 1 and 3A and the 225-4 coils on the left side of the first electromagnet 220 are moved from outside to inside. Current flows and the N pole is formed, and the 226-4 'coil on the right side flows from the inside to the outside and the S pole is formed. In addition, the left portion 235-4 coil of the second electromagnet 230 has a current flowing from the inside to the outside, and an S pole is formed. The right portion of the 236-4 ′ coil has a current flowing from the outside to the inside, and an N pole is formed. Accordingly, an electromagnetic force pushed by the N pole of the permanent magnet 320 and the N pole of the left first electromagnet 220 and the 225-4 coil in the pump rotor 300 is generated, and the N pole and the right of the permanent magnet 320 are generated. The electromagnetic force to which the S pole of the secondary first electromagnet 220 226-4 'coil is drawn is generated. In addition, an electromagnetic force generated by the S pole of the permanent magnet 320 in the pump rotor 300 and the S pole of the left second electromagnet 230 and the 235-4 coil is generated, and the S pole of the right permanent magnet 320 is generated. And the electromagnetic force of pulling the N pole of the right side second electromagnet 230 and the 236-4 'coil. The pump rotor 300 is externally operated by the central shaft 500 by the electromagnetic force.

The 1-2 phase excitation unipolar method is described as follows.

Step 8-1 is a one-phase excitation in which the positive (+) side power is supplied to the terminal of H as specified in Figs. A two-phase excited state in which a positive (+) side power is supplied and one step has been progressed, and the 8-1 step ends in a state where one step has been advanced;

Step 1-2 is a one-phase excitation with the positive (+) side power supplied to terminal A as specified in FIGS. 1 and 3B. A two-phase excited state in which a positive (+) side power is supplied and two steps are progressed, and the 1-2 steps are finished in a state where two steps are progressed;

2-3 steps, 3-4 steps, 4-5 steps, 5-6 steps, 6-7 steps, 7-8 steps, It is operated in the same way as 8-1 step and 1-2 step of;

The one-phase excitation unipolar method operates in 16 steps, and the one-phase excitation unipolar method operates in eight steps. Therefore, the 1-2-phase excitation unipolar method can rotate the pump rotor more precisely and smoothly than the 1-2-phase excitation unipolar method.

In the step operation for adjusting the delay time, the operation time and the discharge flow rate for determining the operation period of the volumetric pump, the rotation speed of the pump rotor is determined according to the digital output of the coded duration and the stop time.

The present invention combines four pumps in volume and provides one motion controller 100 and one power supply 110 as shown in FIG. 1 in order to provide a high capacity powerful pumping action in which pulsation and vibration and noise are minimized. It is constructed in one piece.

Combined pump one-step operation is provided with positive (+) side power to the terminal of power supply 110 A according to the circuits shown in FIGS. 1 and 3A and 3B, and the first stage of the pump as shown in FIG. 225-1 coil on the left side of the first electromagnet 220, 226-1 'coil on the right side, 235-1 coil on the left side of the second electromagnet 230, 236-1' coil on the right side, and two steps of the pump 225-2 coil on the left side of the first electromagnet 220, 226-2 'coil on the right side, 235-2 coil on the left side of the second electromagnet 230, 236-2' coil on the right side, and pump three stages 225-3 coil on the left side of the first electromagnet 220, 226-3 'coil on the right side, 235-3 coil on the left side of the second electromagnet 230, 236-3' coil on the right side, and four steps of the pump The 225-4 coil of the left side of the first electromagnet 220 and the 226-4 'coil of the right side of the first electromagnet 220 and the 235-4 coil of the left side of the second electromagnet 230 and the 236-4' coil of the right side simultaneously operate the electromagnetic force. Work by wiring up to occur;

The combined pump two-step operation is provided with the positive (+) side power supply to the terminal of power supply 110 B and two steps of one stage of pump, three steps of two stages of pump and four steps of three stages of pump as specified in FIG. , 5 steps of 4 stages of pump operate simultaneously;

When the eight steps of the pump combined in the above order is completed, the operation is repeated by the reset timer of the motion controller 100.

According to the embodiment shown in Figs. 8A and 8B, the sum of the step area changes from 1 step to 4 steps and the sum of the step area changes from 5 steps to 8 steps is the divided area 212 after suction specified in 4 steps and 8 steps. Same as

In addition, in the case of combining four volumetric pumps, it is equal to the sum of the area of the four stages of the combined pumps in one step and the post-suction splitting area 212 specified in 4 and 8 steps. In addition, the sum total of the discharge area for each step of 8 steps is the same. Therefore, when four pumps are combined, the total discharge area is constant, and the discharge flow rate is also kept constant.

The embodiments presented above are exemplary and one of ordinary skill in the art may make various modifications and modifications to the embodiments presented without departing from the spirit of the present invention. Such modifications and variations are not intended to limit the scope of the invention.

The parts that make up the volumetric pump in contact with the fluid are made of materials that are excellent in thermal, chemical and abrasion resistance to salt, acid and alkali, and the control and power unit are integrated with the pump to simplify disassembly and assembly. It is easy, and the processing and manufacturing are simple and easy, so it can be manufactured in small size. In addition, the combination of multiple pump units meets large capacity needs and allows for small quantities. Therefore, it can be widely used in various industrial fields such as semiconductor, chemistry, electronics, medicine and food.

10: Pump rotor dual cylindrical shaft
30: pump cylinder shaft
50: central axis
100: motion controller
110: power supply
120: Bluetooth communication module
220: first electromagnet
230: second electromagnet
200: pump cylinder
300: pump rotor
400: friction plate
500: central axis
600: Packing
700: metal plate

Claims (5)

In the manufacturing method of the volumetric pump which is discharged by putting a liquid in the empty space between the pump cylinder and the pump rotor inside the pump cylinder and compressing the volume, the electromagnet of the step operation is fixed to the outside of the symmetrical closed pump cylinder. The rotor is pivoted while the inner side of the pump cylinder and the outer side of the pump rotor slide by the magnetic force of the step operation by installing a pump rotor 300 having fixed neodymium permanent magnets in a bicylindrical cylinder inside the pump cylinder 200. A volumetric pump, characterized in that. 2. The bicylinder of the pump rotor 300 has the same eccentricity with respect to each cylindrical shaft 10, 20, and the pump cylinder shafts 30, 40 are equally circumferentially spaced apart from each other. Orbiting pump, characterized in that the pump rotor 300 moves along the central axis (500).
According to claim 1, wherein the pump rotor 300 is divided into three or two cylinder inner area by the motion controller 100 and the motor drive 110 to operate the suction and discharge stroke is the first electromagnet of the pump cylinder 200 Volumetric pump, characterized in that integrated with the 220 and the second electromagnet (230). 7. The electromagnet of claim 1, wherein seven electromagnets are formed in the left side of the pump cylinder (200) and seven magnets in the right side of the pump cylinder (200). Seven electromagnets on one left side and seven electromagnets on the right side divided by the divider constitute a second electromagnet 230 and are operated in eight steps by the reset timer of the motion controller 100. At this time, in one step, two steps, three steps, five steps, six steps, seven steps, the first electromagnet 220 generates the magnetic force of the S pole and the second electromagnet 230 generates the magnetic force of the N pole. In addition, in step 4, 225-4 of the first electromagnet 220 is an S pole, 225-4 'is an N pole magnetic force is generated, 235-4 of the second electromagnet 230 is N pole, 235-4' is S The magnetic force of the pole is generated. In addition, in step 8, 225-4 of the first electromagnet 220 is the N pole, 225-4 'is the magnetic pole of the S pole is generated, 235-4 of the second electromagnet 230 is S pole, 235-4' is N The magnetic force of the pole is generated. At this time, if the direction of the current or the direction of the pump rotor 300 permanent magnet is opposite, the direction of the magnetic force is also reversed. A volumetric pump, characterized by the configuration described above. The volumetric pump according to claim 1, wherein the four pump units are combined to minimize discharge flow rate and to minimize pulsation and noise.

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