KR102152258B1 - Fluid supply pump to drive tube by movement of rotor with elliptical cross-sectional shape - Google Patents

Abstract

A fluid supply pump driving a tube by movement of rotors with an elliptical cross-sectional shape according to the present invention comprises: a tube composed of a flexible material and providing a flow path of a fluid; a plurality of rotors arranged to be spaced at regular intervals in the lengthwise direction of the tube and formed with an elliptical cross-sectional shape to repeat contact with and separation from the tube during rotation; and a driving unit controlling the rotation of the rotors. The fluid supply pump driving the tube by movement of the rotors with an elliptical cross-sectional shape according to the present invention provides a transfer force to the fluid while the rotors are not directly in contact with the fluid so as to enhance durability as well as to increase wear resistance of the pump, and to prevent a fluid separation phenomenon while minimizing a pulsation phenomenon.

Description

A fluid supply pump that drives a tube with the motion of a rotor with an elliptical cross-section {FLUID SUPPLY PUMP TO DRIVE TUBE BY MOVEMENT OF ROTOR WITH ELLIPTICAL CROSS-SECTIONAL SHAPE}

The present invention relates to a fluid supply pump that drives a tube by the motion of a rotor having an elliptical cross-sectional shape, and in more detail, the rotor is mounted inside the tube and does not contact the fluid, but the rotor and the tube are physically separated. The present invention relates to a fluid supply pump capable of pursuing durability enhancement and wear resistance by providing a contact pressure to a tube by a rotational motion of a rotor having an elliptical cross-sectional shape to generate a swing motion.

A pump is a machine that transports fluid through a pipeline using a pressure action, and there are various types of reciprocating pumps, rotary (rotating) pumps, axial flow pumps, and friction pumps based on their structure.

Here, the rotary pump provides the piston action to the rotor by rotating the part acting as the piston, and not only can apply a wide range of fluids such as water, gasoline, lubricating oil, etc. It is also widely used as a pump.

As a prior art of such a rotary pump, referring to Korean Patent No. 177371, a monopump comprising at least a rotor connected to a rotating shaft through a universal joint and rotating, and a tube disposed on the outer circumference of the rotor corresponding to the shape of the rotor. In the rotor/stator structure of, the rotor is characterized in that the outer shape is a threaded portion and the stator is cylindrical, so that it can be sufficiently machined with a general-purpose machine tool and that it provides easy inspection.

According to this structure, the rotor is mounted in the stator and the fluid is moved in the stator, in other words, it is based on the principle that the motive body part and the follower part transfer the fluid through internal contact motion.

In this case, since the rotor is always in contact with the fluid, there is a problem that corrosion is likely to occur in the rotor depending on the properties of the fluid, and wear easily occurs due to friction with the fluid. Moreover, there is a disadvantage that not only pulsation occurs due to the internal sealing structure of the stator, but also fluid separation may occur frequently when the transfer pressure is high.

Therefore, in order to increase the durability as well as wear resistance of the rotor, a new and advanced fluid supply pump capable of transporting fluid by physically separating the rotor from the tube so that it does not directly contact the fluid, and then applying pressure to the tube by the rotation of the rotor, is provided. There is an urgent need to develop.

The present invention was conceived to overcome the problems of the above technology, and by alternately arranging a plurality of rotors left and right around the outer periphery of the tube and at the same time performing a rotational motion due to the shape of an elliptical cross section to provide a contraction pressure to the tube. Its main purpose is to provide a pump capable of providing a conveying force to a fluid without directly contacting the fluid.

Another object of the present invention is to provide a means for supplying oil such as lubricating oil in order to reduce frictional heat generated when a rotor and a tube are in contact.

Another object of the present invention is to provide a tube guide that has excellent durability and mechanical properties and can effectively protect against corrosion and damage caused by friction with the rotor and aging.

Another object of the present invention is to provide a tube guide in which a plurality of oil cores are press-fit to provide lubrication force to a contact portion between the rotor and the tube.

In order to achieve the above object, a fluid supply pump according to the present invention includes, as an elastic material, a tube providing a fluid flow path; A plurality of rotors arranged at regular intervals along the length direction of the tube and having an elliptical cross-sectional shape to repeat contact and non-contact with the tube when rotating; It characterized in that it comprises a; drive unit for controlling the rotation of the rotor.

In addition, the pump may include an oil supply assembly for supplying oil to a contact portion between the tube and the rotor.

In addition, a tube guide made of an elastic material is surrounded on an outer circumferential surface of the tube.

According to the fluid supply pump for driving the tube by the motion of the rotor having an elliptical cross-sectional shape according to the present invention,

1) Since the rotor does not directly contact the fluid and provides a conveying force to the fluid, the abrasion resistance of the pump can be increased as well as the durability can be improved.

2) It can prevent fluid separation while minimizing pulsation,

3) By supplying oil to the contact area between the rotor and tube, it is possible to enhance the abrasion resistance of the rotor and tube.

4) Through the tube guide, not only can it effectively protect the tube from corrosion and damage caused by friction and aging with the rotor, but also

5) By pressing a plurality of oil cores into the tube guide, it has the effect of providing an efficient lubrication function in case of friction between the rotor and the tube.

1 is a perspective view showing the internal structure of the pump of the present invention.
2 is a cross-sectional view illustrating a structure in which a driving unit is connected to the rotor of the present invention
3 is a conceptual diagram showing the principle of fluid flow in the pump of the present invention.
4 is a perspective view illustrating a state in which an oil supply assembly is mounted to the pump of the present invention.
Figure 5 is a flow chart showing a method of manufacturing the tube guide of the present invention.
Figure 6 is a flow chart showing a method of manufacturing the heat-resistant auxiliary agent of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and the same reference numerals in each drawing refer to the same elements.

1 is a perspective view showing the internal structure of the pump of the present invention.

First, the fluid conveyed or supplied through the pump of the present invention is not limited to a special type. That is, gas as well as liquid may be included. In the case of the principle of operation of the present invention, the fluid is more preferably made of a liquid, and viscous substances or metal/non-metal powders may be included. As such, the fluid may have various properties and compositions, but the present invention provides an exemplary mixture of a powder of at least one of Fe, Si, and Al in a MEK (methylethylketone) solvent.

Referring to Figure 1, the pump of the present invention consists of a tube extending across the body and a plurality of rotors 100 alternately left and right at a predetermined interval based on the extension direction of the tube 10. I can see that there is.

The tube 10 of the present invention has a structure such as a pipe that provides a path through which fluid is supplied or moved, and pushes the fluid in one direction while the tube 10 contracts due to contact according to the rotation of the rotor 100 to be described later. It provides the work of giving out.

In this case, the tube 10 should be made of a material that can be stretched and contracted by contact pressure of the rotor 100, and it is more preferable that the tube 10 is made of a material that is not easily torn when contacted with the rotor 100 by retaining appropriate elasticity.

The rotor 100 of the present invention is connected to a driving unit 200 such as a driving motor 210 and rotated by the driving of the driving unit 200, and provides power to move a fluid in one direction.

The rotors 100 are arranged alternately on the left and right sides of the tube as a plurality of rotors 100 at regular intervals along the length direction of the tube 10.

In particular, the rotor 100 of the present invention is made of a three-dimensional structure similar to a cylinder, but unlike a cylinder having a circular cross section, the cross section is made of an ellipse. That is, it is possible to perform a rotational motion while having an elliptical cross-sectional structure. In other words, a portion corresponding to the long axis of the rotor 100 contacts and presses the tube 100, and the portion corresponding to the short axis of the rotor 100 The can be rotated so as to be spaced apart from the tube 10, which will be described later in more detail with reference to FIG. 3.

2 is a cross-sectional view illustrating a structure in which a driving unit is connected to the rotor of the present invention.

The driving unit 200 of the present invention controls the rotation of the rotor 100, and for this purpose, a driving motor 210 is provided.

The drive unit 200 may also promote fluid movement by connecting the drive motor 210 to each rotor 100 to rotate the plurality of rotors 100 to sequentially drive each drive motor 210. However, in this case, since the number of driving motors 210 may be unnecessarily increased, as can be seen from FIG. 2, a plurality of driving gears along the arrangement of the rotor 100 based on one or a small number of driving motors 210 It is possible to provide rotational force to the rotational shaft connected to each rotor 100 via the drive gear 220 by mounting a power transmission means such as 220. It goes without saying that the power transmission means may be applied to various mechanical means such as belts and links in addition to the drive gear 220.

Hereinafter, the operation of the structure-based pump will be described with reference to FIG. 3.

3 is a conceptual diagram showing the principle of fluid flow in the pump of the present invention.

As can be seen from FIG. 3, when the rotor 100 disposed in the lower right side with respect to the tube 10 is rotated, contact and non-contact with the tube 10 are repeated by the rotation of the rotor 100 based on the elliptical cross-sectional structure. However, when the tube 10 is in contact with the tube 10, the fluid moves in one direction as the tube 10 contracts, and the subsequent rotor, that is, the rotor 100 disposed on the upper left of the tube 10, also rotates to contact the tube 10 / It ensures fluid movement while performing non-contact.

That is, in the pump of the present invention, in the known pump described above, the rotor 100 is disposed inside the tube so that the fluid is not moved by internal contact motion between the rotor and the tube, but the rotor 100 and the tube 10 are physically It is due to the principle of generating a swinging motion by applying a contraction pressure to the tube 10 by rotation of the rotor 100 in the separated state.

According to this structure, since the rotor 100 does not directly contact the fluid, the wear resistance of the rotor 100 can be continuously guaranteed, and the problem of pulsation is drastically reduced because the sealing phenomenon does not occur inside the tube 10. It is possible to transfer the fluid by providing a small pressure and provides a property of blocking fluid separation.

4 is a perspective view illustrating a state in which an oil supply assembly is mounted to the pump of the present invention.

As described above, when pressure is applied to the tube 10 by the rotation of the rotor 100 and the contact between the rotor 100 and the tube 10 occurs frequently, unnecessary frictional heat is generated at the contact area and the air supply tube 10 It may cause a problem of tearing.

To this end, the pump of the present invention is an oil supplying oil to the contact portion between the rotor 100 and the tube 10 in order to provide a function of generating frictional heat between the rotor 100 and the tube 10 and preventing tearing of the tube 10. It is possible to further include a supply assembly 300.

Specifically, the oil supply assembly 300 may include an oil tank and an oil circulation unit under a structure in which the casing 310 provided on one side of the pump (pump body) of the present invention is in communication with the pump body.

The oil tank provides a space for storing oil, and in the present invention, known lubricating oil may be used as the oil. This oil tank is injected into the oil injection port 320 of the casing 310 via a pipe, and supplies oil to the inside of the pump, in particular, to the area where the rotor 100 and the tube 10 contact the above-described problems such as frictional heat generation. Prevent.

Thereafter, an oil outlet 320 is formed on one side of the casing 310 that is opposite to the oil injection unit 320 and flows back into the oil tank. That is, the structure for circulating oil into the pump via a pipe as described above is referred to as an oil circulation unit, and the oil circulation unit includes a separate pump and a valve to control oil supply and provide oil circulation power.

In this way, by providing oil to the contact area between the rotor 100 and the tube 10, frictional heat generated when the rotor 100 and the tube 10 are in contact for a long time, as well as the problem that the tube 10 is torn or easily worn, are avoided. It can be effectively prevented.

Referring back to FIG. 1, it is possible to surround the outer circumferential surface (all or part of) of the tube 10 with a tube guide 20 made of an elastic material.

The tube guide 20 performs a tube protection function to prevent the problem that the tube 10 made of a non-metal material is easily worn or torn compared to the rotor 100 made of a metal material.

In order to efficiently perform this function, it is preferable that the tube guide 20 is made of an elastic material to absorb the shock generated when it contacts the rotor 100, and the tube guide 20 can be replaced periodically. .

Furthermore, in the present invention, a composition capable of enhancing the durability of the tube 10 by supplementing the properties or physical properties of the tube guide 20 and a method of manufacturing the same are additionally presented.

5 is a flow chart showing a method of manufacturing the tube guide of the present invention.

The tube guide 20 according to FIG. 5 describes a composition comprising a functional additive in a rubber-based state, and specifically, the tube guide 20 includes a raw material manufacturing step (S100) and a tube guide completion step (S200). ) Can be manufactured.

First, the raw material manufacturing step (S100) is based on the total weight of the raw material, 50 to 70% by weight of rubber, 15 to 25% by weight of carbon black, 1 to 15% by weight of carbon calcium, 1 to 10% by weight of magnesium oxide, 10 to 25 of functional additives. This is a process of preparing a raw material by mixing weight% and heating at 70 to 120°C.

Here, the rubber is a material exhibiting excellent elastic characteristics, and may be made of natural rubber, synthetic rubber, or a mixture thereof. At this time, natural rubber is manufactured by collecting an emulsion containing a rubber component called latex from a rubber tree and drying the latex, and synthetic rubber is polychloroprene rubber (CR) with good heat resistance and weather resistance, excellent oil resistance and heat resistance. Nitrile rubber (NBR) with excellent ozone resistance and abrasion resistance, butadiene rubber (BR), which is mechanically excellent and has high cold resistance and abrasion resistance, can be used. In addition, carbon black is a fine carbon powder having spherical particles, and serves as a reinforcing agent capable of enhancing the electrical conductivity of the tube guide and enhancing mechanical properties. In addition, carbon calcium is a material that can help strengthen the durability of the tube guide and increase its weight, and can prevent physical damage and tearing of the tube guide, and magnesium oxide makes it resistant to high temperatures in case of fire, and the viscosity of the raw material It is a viscosity modifier that controls and increases its physical strength, which is helpful in preventing tearing and deformation of the shape.

At this time, the functional additive may be made of a mixture of 10 to 35% by weight of oil, 15 to 40% by weight of anti-aging agent, 10 to 30% by weight of vulcanizing agent, and 5 to 25% by weight of accelerator based on the total weight of the functional additive.

First, as the oil, aromatic oil, paraffin oil, etc. can be used, and as a material that gives flexibility to the tube guide, it can prevent cracking and tearing of the tube guide, which is directly applied pressure when the pump is operated. Styrenated phenol), 2-methyl-4,6-[(octylthio)methyl]phenol (4,6-bis[(octylthio)methyl]-o-cresol) and other aromatic amines and phenolic products can be used. B. It is effective in preventing aging of rubber due to ozone and has excellent heat resistance. In addition, sulfur system (including sulfur donor), Peroxide, Urethane crosslink, Metallic oxide, and Oxime can be used as vulcanizing agents. By improving the interaction between rubber molecules, it prevents slipping between molecules and improves mechanical properties such as elasticity and strength. It plays a role of bridging molecules so that they can be made. In addition, guanidine, aldehyde amine, and thiourea may be used as accelerators. As a material that can shorten the crosslinking time by promoting the crosslinking reaction of rubber, the physical or chemical properties of the tube guide Can improve.

Finally, the tube guide completion step (S200) is a process of completing the tube guide 20 after cooling by injecting the raw material into the frame. At this time, the inner circumference of the cross section of the tube guide 20 cooled in the frame should be the same as or slightly larger than the circumference of the tube, and the shape of the frame is not limited as long as the tube guide 20 can have the above-described conditions.

The tube guide 20 manufactured through this process has excellent elasticity, so that the pressure due to the rotational motion of the rotor can be efficiently transmitted to the tube 10.

In addition, according to this composition, since mechanical properties such as durability, strength, heat resistance, and abrasion resistance are excellent, there is an advantage that the tube guide 20 can be effectively protected from corrosion and damage due to friction with the rotor 100 and aging. .

6 is a flow chart showing a method of manufacturing the heat-resistant auxiliary agent of the present invention.

In addition, by additionally including a heat-resistant auxiliary agent in the functional additive of the raw material manufacturing step (S100), thermal stability is improved, and the tube guide 20 is damaged due to frictional heat that inevitably occurs when the tube guide 20 and the rotor 100 are rubbed. It can be prevented, and it may be helpful in improving the durability of the tube guide 20 and preventing aging and corrosion.

These heat-resistant aids include a first mixture preparation step (S110), a first reactant preparation step (S111), a second mixture preparation step (S112), a second reactant preparation step (S113), a third reactant preparation step (S114), and heat resistance. It may be manufactured through the auxiliary agent completion step (S115).

First, the first mixture preparation step (S110) is a process of preparing a first mixture by mixing 90 to 95% by weight of paracresol and 5 to 10% by weight of BORON TRIFLUORIDE ETHERATE. At this time, the first mixture is a form in which boron trifluoride etherate is dispersed using paracresol as a solvent.

Next, the first reactant preparation step (S111) is a process of preparing a first reactant by heating the first mixture to 80 to 100°C and then isothermal stirring. At this time, it is heated to 80 to 100°C. More preferably, heating to 90°C is preferred, and boron trifluoride etherate contained in the first mixture is completely dispersed in the paracresol, and the first mixture is It goes through an operation to obtain a stabilized primary reactant.

Thereafter, in the second mixture preparation step (S112), 20 to 30% by weight of dicyclopentadiene is constantly added dropwise to the first reactant at 2 to 3 g/min based on the total weight of the first mixture to prepare a second mixture. It's a process. Here, when the stabilization of the first mixture is completed, dicyclopentadiene is added dropwise to the first mixture at a constant rate to prepare a second mixture. At this time, the temperature condition should be maintained at 80 to 100°C, preferably 90°C as described above, and the dropwise addition rate of dicyclopentadiene is 2 to 3 g/min.

Next, the second reactant preparation step (S113) is a process of preparing a second reactant by maintaining the second mixture at 80 to 100°C for 2 to 5 hours. Here, a more preferable heating temperature range is 85 to 95° C., and a secondary reactant is prepared through a chemical reaction between boron trifluoride ether contained in the secondary mixture and dicyclopentadiene.

Thereafter, the third reactant preparation step (S114) is a process of preparing a third reactant by concentrating the second reactant at 180 to 200°C and 10 to 20mmHg. At this time, the concentration treatment was performed under the above-described pressure conditions to prepare a tertiary reactant in which the second reactant was concentrated, and thus obtained.

Finally, the heat-resistant aid completion step (S115) is a process of completing the heat-resistant aid by concentrating the tertiary reactant under reduced pressure. These heat-resistant aids can be used alone to achieve the effect of using the existing primary and secondary additives together, and at the same time, even when only a small amount is used, a significant improvement in thermal stability can be expected.

At this time, the concentration under reduced pressure to obtain the heat-resistant auxiliary and the additional process thereof will be described in more detail as follows. The heat-resistant auxiliary agent completion step (S115) may include a solution preparation step, a fourth reactant preparation step, a fifth reactant preparation step, a separation liquid preparation step, and a vacuum concentration step.

First, the step of preparing a solution is to prepare a solution by diluting the third reaction product in toluene again when the preparation of the third reaction product is completed. At this time, the third reactant accounts for 40 to 50% by weight, and toluene accounts for the remaining 50 to 60% based on the total weight of the solution.

After that, in the step of preparing a fourth reactant, trioxymethylene and normal octyl mercaptan are added to the solution to prepare a fourth reactant. In the quaternary reaction, trioxymethylene is added in the range of 0.1 to 10% by weight, and normal octylmercaptan is added in the range of 1 to 10% by weight. In addition, dimethylamine may be added in an amount of 0.01 to 1% by weight as a reaction accelerator and preservative of the quaternary reactant. The remaining 80 to 95% by weight is the weight ratio of the solution. Therefore, it can be said that a small amount of trioxymethylene and normal octyl mercaptan are added to the solution, and the reaction is accelerated, and a small amount of dimethylamine is added as a preservative to prepare a quaternary reaction product.

In the step of preparing the fifth reactant, the prepared fourth reactant is reacted at 90 to 110°C, preferably in the range of 100 to 105°C, for 2 to 5 hours to prepare a fifth reactant. At this time, it was observed with the naked eye that the organic layer was separated from the 5th reactant.

The step of preparing the separation liquid may be referred to as a process of separating and obtaining the organic layer observed in the step of preparing the fifth reactant. In the separation liquid, the above-described heat-resistant auxiliary agent is concentrated and separated.

In the step of concentrating under reduced pressure, the obtained separation liquid is concentrated under reduced pressure to obtain a heat-resistant auxiliary agent having a desired concentration. At this time, since there is no restriction on the vacuum concentration time, the longer the vacuum concentration time is, the higher the concentration of the heat-resistant auxiliary agent can be obtained.

As another embodiment, the tube guide 20 may be drilled to a certain depth and shape at a certain distance on the surface to form a plurality of inlets, and an oil core including graphite may be press-fitted into the inlet. I can.

At this time, since the oil core is made of graphite, it has a layered structure, and oil is already provided inside the layered structure to adsorb the oil, and when pressure is applied from the outside, the adsorbed oil is discharged to form a solid It can serve as a lubricant. Therefore, as the rotor 100 contacts and presses the surface of the tube guide 20, the oil impregnated in the oil core is discharged, thereby lubricating the contact area between the rotor 100 and the tube 10, thereby providing the aforementioned oil supply assembly. It can provide a function similar to (300).

At this time, the inlet may be in the shape of a hole in which the tube guide 20 is completely drilled, but in order to effectively support the oil core, it is preferably formed by drilling to a depth less than the thickness of the tube guide 20. In addition, the cross-sectional view of the inlet may have various shapes such as U, V, etc., and the inlet may be formed on the surface of the tube guide 20 at regular or irregular intervals.

As described so far, the fluid supply pump for driving the tube by the motion of the rotor having an elliptical cross-sectional shape according to the present invention is expressed in the above description and drawings, but this is only an example, and the spirit of the present invention is described above. It is not limited to, of course, various changes and changes are possible within the scope of the technical spirit of the present invention.

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10: tube 20: tube guide
100: rotor 200: drive
210: drive motor 220: drive gear
300: oil supply assembly 310: casing
320: oil inlet 330: oil outlet
S100: raw material manufacturing step S200: tube guide completion step
S110: primary mixture preparation step S111: primary reactant preparation step
S112: Secondary mixture preparation step S113: Secondary reactant preparation step
S114: tertiary reactant preparation step S115: heat-resistant auxiliary agent completion step

Claims (10)

As a fluid supply pump that drives a tube by the motion of a rotor having an elliptical cross-sectional shape,
A flexible material, comprising: a tube providing a fluid flow path;
A plurality of rotors arranged at a predetermined interval along the longitudinal direction of the tube and having an elliptical cross-sectional shape to repeat contact and non-contact with the tube when rotating;
A driving unit that controls the rotation of the rotor;
Including; a tube guide made of an elastic material to surround the outer peripheral surface of the tube,
The tube guide is drilled to a predetermined depth and shape at a predetermined interval on the surface to form a plurality of inlets,
The fluid supply pump, characterized in that the oil core containing graphite is press-fitted into the inlet. The method of claim 1,
The pump,
And an oil supply assembly for supplying oil to a contact portion between the tube and the rotor. delete The method of claim 1,
The tube guide,
After mixing 50 to 70% by weight of rubber, 15 to 25% by weight of carbon black, 1 to 15% by weight of carbon calcium, 1 to 10% by weight of magnesium oxide, and 10 to 25% by weight of functional additives relative to the total weight of raw materials, 70 to 120 A raw material manufacturing step of preparing a raw material by heating at ℃;
Including; a tube guide completion step of completing the tube guide after cooling by injecting the raw material into the frame;
The functional additive,
Fluid supply pump, characterized in that consisting of a mixture of 10 to 35% by weight of oil, 15 to 40% by weight of anti-aging agent, 10 to 30% by weight of vulcanizing agent, and 5 to 25% by weight of accelerator based on the total weight of functional additives. delete delete delete delete delete delete

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