Multifunctional vacuum pump and reciprocating linear motion mechanism thereof

Abstract

The utility model relates to a multifunctional vacuum pump and a reciprocating rectilinear motion mechanism thereof, the reciprocating rectilinear motion mechanism comprises a piston cylinder made of high wear-resistant engineering plastic material, at least two conductive coils arranged on the periphery of the piston cylinder and a piston in sliding sealing fit in the piston cylinder, the two conductive coils are arranged on the periphery of the piston cylinder at intervals, and the two conductive coils are arranged on the periphery of the piston cylinder at intervals. The piston is an iron core piston or a magnet piston. The multifunctional vacuum pump comprises a reciprocating linear motion mechanism, two ends of a piston cylinder are sealed through sealing plates, each sealing plate is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is provided with an air inlet one-way valve, and the air outlet pipe is provided with an air outlet one-way valve. According to the reciprocating rectilinear motion mechanism, the piston cylinder made of high-abrasion-resistance engineering plastic materials is adopted, the requirement that the piston moves in the piston cylinder can be met, the electromagnetic shielding effect of the metal piston cylinder can be avoided, the magnetic force generated by the coil can directly act on the piston, and the piston can do reciprocating rectilinear motion in the piston cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to reciprocating motion mechanical technology field, especially to a kind of multifunctional vacuum pump and its reciprocating linear motion mechanism. BACKGROUND

[0002] There are many reciprocating linear motion mechanisms, such as electric push rod, using the principle of screw nut screw, such as piston crank mechanism, through oil gas combustion, chemical energy is converted into reciprocating kinetic energy. Reciprocating linear motion mechanism is widely used, but the structure of electromagnetic drive piston reciprocating linear motion is rarely seen.

[0003] How to design a reciprocating linear motion mechanism and a multifunctional vacuum pump with the reciprocating linear motion mechanism is a technical problem to be solved at present. INVENTION CONTENTS

[0004] The utility model is aimed at providing a reciprocating linear motion mechanism to solve the above technical problems.

[0005] The utility model adopts the technical scheme as follows:

[0006] The reciprocating linear motion mechanism comprises a piston cylinder made of high-wear-resistance engineering plastic, at least two conductive coils arranged on the outer periphery of the piston cylinder and a piston slidingly and sealingly fitted in the piston cylinder, the two conductive coils are arranged at intervals on the outer periphery of the piston cylinder, and the piston is an iron core piston or a magnet piston.

[0007] Preferably, the piston has at least one annular oil groove in the circumferential direction.

[0008] Preferably, the annular oil groove has an oil storage ring.

[0009] Preferably, the circumferential middle part of the piston has uniformly distributed oil storage lines or groove arrays.

[0010] Preferably, the outer periphery of the piston has a high-wear-resistance engineering plastic layer.

[0011] Preferably, the cylinder body of the piston cylinder has a plurality of axially extending heat dissipation through holes distributed along the circumference.

[0012] Preferably, the heat dissipation through holes are provided with S-shaped heat dissipation pipelines.

[0013] Preferably, the controller, the switch unit and the voltage regulator are respectively connected to the power supply circuit of the two conductive coils to control the on-off, voltage and current flow direction of the two conductive coils.

[0014] The utility model discloses a multi-functional vacuum pump, including the reciprocating linear motion mechanism, both ends of the piston cylinder are closed through the sealing plate, and the sealing plate all has the air inlet pipe and the exhaust pipe, and the air inlet pipe has the air inlet check valve, and the exhaust pipe has the exhaust check valve.

[0015] Preferably, the inner surfaces of the two sealing plates are fixedly provided with deceleration springs.

[0016] The utility model discloses a beneficial effect: reciprocating linear motion mechanism adopts the piston cylinder of high wear -resistant engineering plastics material, can satisfy the requirement of piston movement in the piston cylinder, can also avoid the shielding effect of metal piston cylinder to electromagnet, makes the magnetic force of coil can directly act on the piston, two conductive coils are arranged at the periphery of the piston cylinder, when using, for the iron core piston or magnet piston, charges one conductive coil, and the iron core piston or magnet piston is linearly moved in one direction in the piston cylinder under the action of electromagnetic force, and charges another conductive coil when the conductive coil is powered off, and the iron core piston or magnet piston is linearly moved in another direction in the piston cylinder under the action of electromagnetic force, and the cycle operation realizes that the iron core piston or magnet piston reciprocating linear motion in the piston cylinder, and there is no fuel, and there is no need for piston ring. For the magnet piston, during the movement of the magnet piston, the two conductive coils can be reversely charged, so that one conductive coil attracts the magnet piston through electromagnetic force, and the other conductive coil repels the magnet piston through electromagnetic force, so that the magnet piston obtains greater resultant force.

[0017] Further, the circumference of the piston has at least one annular oil groove, which can store lubricating oil and reduce the friction between the piston and the inner wall of the piston cylinder.

[0018] Further, the annular oil groove has an oil storage ring, which can better store lubricating oil in the annular oil groove.

[0019] Further, the circumferential middle part of the piston has uniformly distributed oil storage lines or groove arrays.

[0020] Further, the outer circumferential surface of the piston has a high-wear-resistant engineering plastic layer, which further prolongs the service life of the piston.

[0021] Further, the cylinder body of the piston cylinder has a plurality of axially extending heat dissipation through holes distributed along the circumference, which can dissipate heat from the piston cylinder and avoid overheating of the piston cylinder.

[0022] Further, the heat dissipation through holes have S-shaped heat dissipation pipelines, which can be cooled by air or water to cool the piston cylinder.

[0023] Further, the controller, the switch unit and the voltage regulator are connected to the power supply circuit of the two conductive coils respectively to control the on-off, voltage and current direction of the two conductive coils, so that the movement speed and direction of the piston can be controlled by regulating the voltage, on-off and current direction of the conductive coils during the movement of the piston.

[0024] The multifunctional vacuum pump comprises a reciprocating linear motion mechanism, both ends of the piston cylinder are closed by sealing plates, the sealing plates are provided with air inlet pipes and air outlet pipes, the air inlet pipes are provided with air inlet one-way valves, and the air outlet pipes are provided with air outlet one-way valves.

[0025] Further, the inner surfaces of the two sealing plates are fixedly provided with deceleration springs, so that the final speed of the piston can be buffered and limited. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic view of the reciprocating linear motion mechanism in the embodiment of the utility model.

[0027] Figure 2 FIG. 2 is a structural schematic view of the piston in the embodiment of the utility model.

[0028] Figure 3 FIG. 3 is a top view of the piston cylinder.

[0029] Figure 4 FIG. 4 is an installation structural schematic view of the heat dissipation pipeline in the piston cylinder in the embodiment of the utility model.

[0030] Figure 5 FIG. 5 is a schematic view of the power supply, the controller and the power supply circuit in the embodiment of the utility model.

[0031] Figure 6 FIG. 6 is a sectional view of the second structure of the piston in the embodiment of the utility model.

[0032] Figure 7 FIG. 7 is a schematic view of the third structure of the piston in the embodiment of the utility model.

[0033] Figure 8 FIG. 8 is a structural schematic view of the multifunctional vacuum pump in the embodiment of the utility model. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0035] Example 1

[0036] Reciprocating linear motion mechanism, such as Figures 1-7 As shown, it includes a piston cylinder 1 made of high-wear-resistant engineering plastic material, at least two conductive coils 3 and 4 arranged on the outer periphery of the piston cylinder, and a piston 2 with a sliding seal fitted in the piston cylinder. In this embodiment, the two conductive coils are arranged at intervals on the outer periphery of the piston cylinder. The piston is an iron core piston or a magnet piston. In this embodiment, the piston adopts an iron core piston; the high-wear-resistant engineering plastic material used in the piston cylinder is the existing technology, such as PEEK (polyetheretherketone) modified plastic, PET (polyethylene terephthalate) nanocomposite material and PA66 (polyhexamethylene adipamide) modified material developed by Jiangsu Xinfuda Composite Materials Co., Ltd. In this embodiment, the company's H7230CF2MS model engineering plastic and X1308 model engineering plastic can be used. They have the advantages of high load, self-lubrication and high temperature resistance of special rigid PEEK, as well as good sealing, impact resistance and low noise of flexible plastic elastomer TPU, and can work in high temperature, high pressure and high speed environments. The piston has at least one annular oil groove 5 around its circumference. In this embodiment, three annular oil grooves 5 are provided. These grooves store lubricating oil, reducing friction between the piston and the inner wall of the piston cylinder. Within these annular oil grooves are oil reservoir rings (not shown), which can be sponge rings or cotton pads. This effectively stores lubricating oil in the annular oil grooves. During use, the lubricating oil in the reservoir rings is ejected through inertia to lubricate the piston and the inner wall of the piston cylinder.

[0037] In this embodiment, power supply 10, controller 13, switch units 11, 15, and voltage regulators 12, 14 are respectively connected to the power circuits of the two conductive coils 3, 4. During piston movement, the piston's speed and direction can be controlled by regulating the voltage, switching the conductive coils on and off, and adjusting the direction of current flow. The control method is based on existing technology, and applications ranging from electromagnetic compressors to aircraft carrier electromagnetic catapults have been used to control the speed and direction of piston movement by adjusting the magnitude and direction of magnetic force. This will not be described in detail here. The present invention provides a hardware system for implementing the control method. In this embodiment, the switch unit is an electronic on-off switch. For the magnetic piston, the switch unit can also be a selector switch or a power conversion switch that can change the direction of current flow. Any control switch that can change the direction of circuit flow is acceptable.

[0038] The plurality of axial extension heat dissipation through holes 8 distributed along the circumference in the cylinder body of the piston cylinder can dissipate heat of the piston cylinder, and avoid high temperature of the piston cylinder. The S-shaped heat dissipation pipeline 9 is arranged in the heat dissipation through hole, and the piston cylinder can be cooled by air cooling or water cooling in the heat dissipation pipeline.

[0039] The reciprocating linear motion mechanism of the utility model adopts the piston cylinder of high wear-resistant engineering plastic material, can meet the requirements of the piston movement in the piston cylinder, and can avoid the shielding effect of the metal piston cylinder on the electromagnet, so that the magnetic force generated by the coil can directly act on the piston. Two conductive coils are arranged at intervals outside the piston cylinder. When in use, for the iron core piston or the magnet piston, one conductive coil is charged, the iron core piston or the magnet piston moves linearly in one direction in the piston cylinder under the action of the electromagnetic force, the conductive coil is powered off and the other conductive coil is charged, the iron core piston or the magnet piston moves linearly in the other direction in the piston cylinder under the action of the electromagnetic force, and the reciprocating linear motion of the iron core piston or the magnet piston in the piston cylinder is realized. For the magnet piston, the two conductive coils can be reversely charged during the movement of the magnet piston, so that one conductive coil attracts the magnet piston through electromagnetic force, and the other conductive coil repels the magnet piston through electromagnetic force, so that the magnet piston obtains greater resultant force.

[0040] In other embodiments, unlike the above embodiments, as shown in Figure 5 The circumferential middle part of the piston is provided with uniform oil storage lines or groove arrays 6. In other embodiments, unlike the above embodiments, as shown in Figure 6 The outer circumferential surface of the piston is provided with a high wear-resistant engineering plastic layer 7. The high wear-resistant engineering plastic piston is in sliding fit with the inner wall of the high wear-resistant engineering plastic piston cylinder, and the service life of the entire reciprocating linear motion mechanism can be increased. In other embodiments, unlike the above embodiments, for the piston cylinder with a relatively long length, three conductive coils, four conductive coils, five conductive coils or the like can be arranged along the axial direction of the outer circumference of the piston cylinder. During the linear movement of the piston, the front coils of the piston are sequentially powered on, and the rear coils of the piston are sequentially powered off. For the magnet piston, the rear coils of the piston can also be reversely powered to push the piston.

[0041] Embodiment 2

[0042] Multifunctional vacuum pump, such as Figure 8As shown, both ends of the piston cylinder 1 are closed by the end plates 19, 21, and the end plates are provided with the air inlet pipes 16, 23 and the air outlet pipes 18, 20, the air inlet pipes are provided with air inlet check valves (not shown in the figure), and the air outlet pipes are provided with air outlet check valves (not shown in the figure). The inner surfaces of the two end plates are fixedly provided with the deceleration springs 17, 22, and the deceleration springs 17, 22 in the embodiment are conical springs, and the resistance is rapidly increased with the compression of the conical springs.

[0043] The multifunctional vacuum pump can exhaust air through the air outlet pipe at one end of the piston cylinder when the piston moves to the end, and can intake air through the air inlet pipe at the other end, so that both ends can be used for vacuumizing, both ends can be used as air pumps, and one end can be used for vacuumizing and the other end can be used for air charging, and the use is very flexible. The inner surfaces of the two end plates are fixedly provided with the deceleration springs, and the final speed of the piston can be buffered and limited.

[0044] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A reciprocating linear motion mechanism, characterized by: The piston cylinder is made of high wear-resistant engineering plastic material, at least two conductive coils are arranged on the outer periphery of the piston cylinder, and a piston is slidingly sealed in the piston cylinder.

2. The reciprocating linear motion mechanism according to claim 1, characterized by: The piston has at least one annular oil groove in the circumferential direction.

3. The reciprocating linear motion mechanism according to claim 2, characterized by: The annular oil groove has an oil storage ring.

4. The reciprocating linear motion mechanism of claim 1, wherein: The circumferential middle part of the piston has an array of uniformly distributed oil storage grooves or recesses.

5. The reciprocating linear motion mechanism of claim 1, wherein: The outer periphery of the piston has a high wear-resistant engineering plastic layer.

6. The reciprocating linear motion mechanism of claim 1, wherein: The cylinder body of the piston cylinder has a plurality of axially extending heat dissipation through holes distributed along the circumference.

7. The reciprocating linear motion mechanism of claim 6, wherein: The heat dissipation through holes are S-shapedly provided with heat dissipation pipes.

8. A reciprocating linear motion mechanism according to any one of claims 1 to 7, characterized in that: A controller, a switch unit and a voltage regulator are respectively connected to the power supply circuit of the two conductive coils to control the on-off, voltage and current flow direction of the two conductive coils.

9. Multifunction vacuum pump, characterized in that: The reciprocating linear motion mechanism comprises the piston cylinder, and both ends of the piston cylinder are closed by sealing plates, the sealing plates are respectively provided with air inlet pipes and air outlet pipes, the air inlet pipes are provided with air inlet one-way valves, and the air outlet pipes are provided with air outlet one-way valves.

10. The multi-functional vacuum pump according to claim 9, characterized in that: The inner surfaces of the two sealing plates are fixedly provided with deceleration springs.

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