CN108247135B

CN108247135B - U-shaped nozzle for charged mist

Info

Publication number: CN108247135B
Application number: CN201810218066.6A
Authority: CN
Inventors: 许雪峰; 吕涛; 黄水泉; 胡晓冬; 马亚良
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2018-03-16
Filing date: 2018-03-16
Publication date: 2023-07-21
Anticipated expiration: 2038-03-16
Also published as: CN108247135A

Abstract

The invention provides a U-shaped nozzle for charged aerosol, which comprises a U-shaped shell, an aerosol pipe and a high-voltage electrostatic transmission wire, wherein the U-shaped shell is provided with three channels, and the two side channels of the U-shaped shell are respectively inserted into the aerosol pipe; one end of the high-voltage electrostatic transmission wire passes through the middle channel of the U-shaped shell, and after entering the U-shaped shell, the high-voltage electrostatic transmission wire is divided into two paths, and the end parts of the two paths are respectively provided with a charging electrode which charges the aerosol in the aerosol pipes at the two sides respectively; the invention is applied to the field of mechanical processing lubrication, and has the characteristics of compact structure, simple and convenient operation, high integration level, stable charge, difficult loss of charge of the charged lubricating liquid, convenient installation and the like.

Description

U-shaped nozzle for charged mist

Technical Field

The invention relates to the technical field of mechanical lubricating liquid supply devices, in particular to a charged mist U-shaped nozzle for the field of electrostatic micro-lubrication.

Background

When the traditional metal band sawing machine saw cuts a workpiece, water-based or oil-based lubricating liquid is mostly directly poured at the sawing working position, so that the effects of cooling and lubricating the band saw and the workpiece are achieved, and the sawing precision is improved. The cooling and lubricating mode has the advantages of high consumption of lubricating liquid, high processing cost, easy splashing of the lubricating liquid and environmental pollution.

In order to overcome the defects, the prior metal band sawing machine usually adopts an oil gas mist to replace a casting method when sawing a workpiece, and cools and lubricates the sawed saw blade. The method generally adopts a micro-lubricating device, utilizes compressed air to atomize lubricating oil into micron-sized mist droplets, and conveys the mist droplets to the surface of a saw blade through a nozzle. There are two types of such micro-lubrication devices commonly used in engineering: the plunger pump is controlled by the pneumatic frequency generator to quantitatively provide trace lubricating oil, the pumped lubricating oil and compressed air are coaxially conveyed to the nozzle, the lubricating oil is mixed and atomized with the compressed air at the nozzle opening and is sprayed to the saw blade, and a representative device is an Accu-Lube MQL oil injection system; another type is to atomize the lubricant and compressed air into an oil mist in a container, which is sprayed through a gas pipe and a nozzle to the saw blade, and a representative device is the "micro-lubrication device" patent product with application number 201420299997.0.

For sawing, the special features of the sheet saw blade include two kinds of oil gas mist nozzles, including one with two kinds of U-shaped nozzles, with one with compressed air passage inside, one with compressed air passage for the liquid pipe to pass through, and one with lubricant at the outlet to form gas mist for spraying out of the two nozzles and cooling and lubricating the saw blade; the other is that the left and right aerosol pipes are led from the second type of micro-lubrication device, and the aerosol is directly sprayed out from the double nozzle openings through the aerosol channel of the U-shaped nozzle to cool and lubricate the saw blade.

After being sprayed out from the U-shaped nozzle, part of the aerosol is adsorbed on two sides of the saw blade, and the other part of the aerosol is dispersed in the air, so that the environment is easy to be polluted. The patent of the application number 201310050211.5, "cutting fluid aerosol micro-lubrication method and device" proposes a method of charging cutting fluid, which is called electrostatic micro-lubrication. The charged cutting fluid mist drops are electrostatically charged, so that the adsorption performance of the mist drops on the inner walls of the cutter, the workpiece and the machine tool is improved, the cooling and lubricating effects of the mist on the cutter are enhanced, and the pollution of the mist on the environment is reduced.

The invention provides a method and an implementation scheme for charging oil mist generated by a second type of micro-lubrication device on a U-shaped nozzle, and after charged mist drops are sprayed out from a U-shaped nozzle opening, the adsorption performance of the charged mist drops on the surface of a saw blade is improved, so that the cooling lubrication of the saw blade is facilitated, the sawing processing precision is improved, the service life of the saw blade is prolonged, and the charged mist drops dispersed in a space are easily adsorbed on various surfaces in a machine tool, so that the pollution of the working environment is reduced.

Disclosure of Invention

The invention aims to provide a U-shaped nozzle of charged mist, which is used for electrostatic micro-lubrication and has compact structure and reliable charging.

In order to achieve the above purpose, the present invention is realized by the following technical scheme:

the utility model provides a lotus electric fog U type nozzle which characterized in that: the device comprises a U-shaped shell, an aerosol pipe and a high-voltage electrostatic transmission wire, wherein the U-shaped shell is provided with three channels, and the two channels on the two sides of the U-shaped shell are respectively inserted into the aerosol pipe; one end of the high-voltage electrostatic transmission wire passes through the middle channel of the U-shaped shell, and after entering the U-shaped shell, the high-voltage electrostatic transmission wire is divided into two paths, and the end parts of the two paths are respectively provided with a charging electrode which charges the aerosol in the aerosol pipes at the two sides respectively; and two sides of the U-shaped shell are provided with aerosol outlets.

The U-shaped shell is made of a high-resistivity material, such as a polyoxymethylene material.

The aerosol pipe is made of a plastic hose or a metal (such as copper) pipe, and when the plastic hose is adopted for the aerosol pipe, the charge electrode is inserted into the aerosol pipe to charge the aerosol; when the aerosol pipe adopts a metal pipe, the charging electrode is connected to the outer surface of the metal pipe, and charges the aerosol through the metal pipe.

The aerosol pipe is connected with the U-shaped shell through a joint.

The high-voltage electrostatic transmission wire adopts high-temperature high-voltage wires with good conductivity.

The high-voltage electrostatic transmission wire is connected with the middle channel of the U-shaped shell through a wire connector, the wire connector is clamped through a knob, the high-voltage wire can be clamped, and the assembly and the disassembly are convenient.

The aerial fog outlet is upward with 45 degrees contained angles with the horizontal line, and is a stepped hole, the aperture close to the aerial fog pipe is larger than the aperture far away from the aerial fog pipe, and the aperture of the aerial fog pipe is larger than the small hole of the stepped hole and smaller than the large hole of the stepped hole.

The U-shaped shell is sealed by epoxy resin glue.

The U-shaped shell is provided with a matched U-shaped cover.

The aerosol pipe can be a plastic hose with good compression resilience performance, has certain wear resistance and pressure resistance, and has the advantages of good air tightness (no leakage), low adsorptivity, high temperature resistance, long service life, good corrosion resistance and no swelling.

Compared with the prior art, the invention has the following advantages:

1. compact structure, simple and convenient operation, high integration level, stable charge, difficult loss of droplet charge and convenient installation;

2. the charged lubricating liquid has small particle size and wetting angle, high cooling and lubricating capacity, can accurately lubricate metal processing points, and is widely applied to the metal processing industry;

3. greatly saves the consumption of lubricant, optimizes and improves the working environment, reduces the pollution emission, simplifies the subsequent treatment of processing, and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a partial view in the A-A direction of the structural schematic of the present invention;

fig. 3 is a schematic structural view of the U-shaped cap of the present invention.

In the figure: 1. the device comprises an aerosol pipe, a U-shaped shell, a connector, a wire connector, a high-voltage electrostatic transmission wire, a charging electrode, a connector and an aerosol outlet, wherein the connector is arranged on the U-shaped shell, the wire connector is arranged on the U-shaped shell, the high-voltage electrostatic transmission wire is arranged on the high-voltage electrostatic transmission wire, and the aerosol pipe is arranged on the U-shaped shell.

Detailed Description

As shown in fig. 1, the charged mist U-shaped nozzle according to the embodiment of the present invention includes an aerosol tube 1, a U-shaped housing 2, a connector 3, a wire connector 4, a high-voltage electrostatic delivery wire 5, a charging electrode 6, and an aerosol outlet 7, wherein the upper end of the U-shaped housing 2 is provided with three channels; the aerosol pipe 1 is connected with the U-shaped shell 2 through a joint 3; the high-voltage electrostatic transmission wire 5 is connected with the middle channel of the U-shaped shell 2 through a wire connector 4, and after the high-voltage electrostatic transmission wire 5 enters the U-shaped shell 2, the high-voltage electrostatic transmission wire is divided into two paths to extend into the channels on two sides of the U-shaped shell 2; the bottom end of the high-voltage electrostatic transmission wire 5 is provided with a charging electrode 6 which is respectively inserted into the plastic aerosol pipes 1 of the channels at the two sides of the U-shaped shell 2 or connected to the outer surfaces of the copper aerosol pipes 1 of the channels at the two sides of the U-shaped shell 2 to charge the aerosol; the bottom ends of the two sides of the U-shaped shell 2 are symmetrically provided with aerosol outlets 7; the bottom of the aerosol pipe 1 is bent and is arranged in aerosol outlets 7 at two sides of the U-shaped shell 2, and after all parts are installed, epoxy resin glue is injected into the U-shaped shell 2 for insulation treatment. The U-shaped cover is additionally arranged on the U-shaped shell 2.

The U-shaped nozzle for the charged mist can effectively charge the mist of the lubricating liquid, has a simple structure and convenient disassembly and assembly, and can effectively avoid charge loss of charged droplets and reduce damage to operators and precision instruments.

As shown in fig. 2, the U-shaped cover according to the embodiment of the present invention is attached to the U-shaped housing 2, so that insulation treatment can be further performed, and safety is improved.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the concept of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. The utility model provides a lotus electric fog U type nozzle which characterized in that: the device comprises a U-shaped shell, an aerosol pipe and a high-voltage electrostatic transmission wire, wherein the U-shaped shell is provided with three channels, and the two channels on the two sides of the U-shaped shell are respectively inserted into the aerosol pipe; one end of the high-voltage electrostatic transmission wire passes through the middle channel of the U-shaped shell, and after entering the U-shaped shell, the high-voltage electrostatic transmission wire is divided into two paths, and the end parts of the two paths are respectively provided with a charging electrode which charges the aerosol in the aerosol pipes at the two sides respectively; the opposite surfaces of the two sides of the U-shaped shell are provided with aerosol outlets, the aerosol outlets are symmetrically arranged and are upwards arranged at a certain included angle with the horizontal line.

2. The charged mist U-shaped nozzle according to claim 1, wherein the aerosol outlet is provided with a stepped hole with an angle of 45 degrees with the horizontal line, the aperture of the aerosol pipe close to the nozzle is larger than the aperture of the aerosol pipe far away from the nozzle, and the aperture of the aerosol pipe is larger than the small aperture of the stepped hole and smaller than the large aperture of the stepped hole.

3. The charged aerosol U-shaped nozzle of claim 1 wherein said aerosol tube bottom is folded and positioned within the aerosol outlets on both sides of the U-shaped housing.

4. The charged mist U-shaped nozzle of claim 1 wherein said U-shaped housing is made of an insulating material.

5. The charged mist U-shaped nozzle of claim 1 wherein said U-shaped housing is sealed with epoxy glue.

6. The charged mist U-shaped nozzle of claim 1 wherein said U-shaped housing has a U-shaped cap on one side thereof.

7. A charged aerosol U-shaped nozzle according to any one of claims 1 to 6 wherein the aerosol tube is made of a plastic hose and the charging electrode is inserted into the aerosol tube to charge the aerosol.

8. A charged aerosol U-shaped nozzle according to any one of claims 1 to 6 wherein the aerosol tube is made of metal and the charging electrode is connected to the outer surface of the metal tube and charges the aerosol through the metal tube.