CN201212558Y

CN201212558Y - Leakage proof means

Info

Publication number: CN201212558Y
Application number: CNU2008201305331U
Authority: CN
Inventors: 陈庆龙; 李玟澄; 李来阳
Original assignee: Manz Taiwan Ltd
Current assignee: Manz Taiwan Ltd
Priority date: 2008-07-04
Filing date: 2008-07-04
Publication date: 2009-03-25
Anticipated expiration: 2018-07-04

Abstract

The utility model provides a leak-proof device. An axle hole and a circular air flow passage encircled around the periphery of the axle hole are arranged on a main body, wherein a plurality of air outlet passages with inclined angles are arranged between the circular air flow channel and the axle hole, the internal diameter of the axle hole is provided with a flow passage communicated with the air outlet passages, the main body is also provided with an air inlet hole communicated with the circular air flow passage and inclined at a certain angle; the axle hole is matched with a rotating axle with process, after the gas is introduced into the circular air flow passage through the air inlet hole, the gas flows in the circular air flow passage along one direction correspondingly, and then flows out from the air outlet passages to the surface of the outer diameter of the axle hole, barometric pressure is formed in the direction towards the both ends of the rotating axle, the vapor of the process is prevented from leaking at the matching point between the rotating axle and the axle hole through the barometric pressure. The leak-proof device can reduce and even does not use the leak-proof components such as traditional O-shaped rings or oil seals, therefore, the cost of leakage protection is saved, the procedures of repair and maintenance are simplified, and the productive efficiency is improved.

Description

Leakage protection device

Technical field

The utility model relates in a kind of industry wet process, is used for preventing the device of fluid leaks.

Background technique

In wet process such as industries such as printed circuit board (PCB), panels, all must be provided with leakage protection device, ooze out to prevent the fluid such as gas, liquid in the machinery equipment; Described seepage generally is to ooze out from the rotating shaft and the axis hole cooperation place of roller.Existing described leakage protection device is in rotating shaft and axis hole cooperation place leakproof assemblies such as O shape rubber ring or oil sealing to be set mostly; Yet, when machine run after a period of time, these leakproof assemblies also can be because of wearing and tearing or aging and cause seepage under no early warning situation, the liquid or the gas that particularly contain vaporization in the wet process, even fluids such as these gas, liquid are when having pressure, and the leakage proof effect of existing leakage protection device may be relatively poor.In addition,, therefore, not only increase the cost of leakproof assembly, and replacing is also more loaded down with trivial details, inconvenient, directly influences working efficiency because leakproof assemblies such as existing O shape ring or oil sealing must regularly replace.

The model utility content

The utility model is for the necessary time-based maintenance of the leakage protection device that solves existing industry wet process and changes the leakproof assembly that the generation that is produced is originally higher, and work procedure is more loaded down with trivial details, influences the problem of working efficiency.

Feature of the present utility model is to utilize gas pressure in the rotating shaft of industry wet process and the cooperation place of axis hole, and the fluid in the machinery equipment can be stopped by air pressure effectively in this axis hole cooperation place, thereby avoids the seepage of fluid; Simultaneously, and since capable of reducing using, even do not need to use leakproof assemblies such as traditional O shape ring and oil sealing, thus saved the user cost of those leakproof assemblies, and reduce the cycle of maintenance, promote prouctiveness.

The utility model provides a kind of leakage protection device, be provided with an axis hole at a body, the periphery of this axis hole is provided with an annular air-flow path, be provided with the outlet passageway of a plurality of inclination one angles between this annular air-flow path and this axis hole, the runner that described shaft hole diameter is provided with and this outlet passageway communicates, this body also is provided with and this annular air circulation communicates, and the inlet hole of the angle that tilts, formation feeds this annular air-flow path from this inlet hole, and the current path along this annular air-flow path to this outlet passageway.This inlet hole can built-up joint, is connected in gas pressure source with pipeline again.Described axis hole is used for cooperating the rotating shaft of a processing procedure conveyor, after gas pressure source feeds this annular air-flow path with pressurized gas from this inlet hole, taken advantage of a situation and flowed at this annular air-flow path along a direction, flow out to the external diameter surface of rotating shaft again from this outlet passageway, make the external diameter surface of rotating shaft form a gas pressure, the fluid such as gasifying liquid, gas that is stoped described processing procedure by this air pressure is from this rotating shaft and axis hole cooperation place seepage.

The utility model is circular along the internal diameter circumferential extension of this axis hole at the set runner of the shaft hole diameter of body, and its purpose avoids rotating shaft and axis hole to fit fully after being to make axis hole and rotating shaft to cooperate, and causes the obstruction of outlet passageway.

It is all identical that the utility model is located at the angle of inclination of those channels of giving vent to anger of this shaft hole diameter, forms the path of giving vent to anger of the circumference from this outlet passageway to this shaft hole diameter.After its purpose is to make gas to blow out from this channel of giving vent to anger, can flows along the circumference of this shaft hole diameter, thereby can form a gas pressure at the circumference of rotating shaft.

Adopt leakage protection device of the present utility model, can reduce leakproof assemblies such as even need not using traditional O shape ring or oil sealing, saved the cost of leakproof, and simplified the program of maintenance, promoted prouctiveness.

Description of drawings

Fig. 1 is embodiment's stereogram of the utility model leakage protection device structure;

Fig. 2 is the utility model leakage protection device structure, and the air-flow floor map of flow path therein;

Fig. 3 is installed on rotating shaft for leakage protection device of the present utility model, to stop embodiment's floor map of gasifying liquid seepage;

Fig. 4 is the structure of the utility model leakage protection device, can be applied to air-bearing, to reach embodiment's schematic representation of identical leak preventing effect.

Wherein,

1....... body

11...... inlet hole

12...... annular air-flow path

13...... annular wall

131...... outlet passageway

132...... runner

14...... axis hole

2...... rotating shaft

3...... dividing plate

31...... vent

4...... joint

5...... air-bearing

6...... flexible thing

7...... pressing plate

Embodiment

Below cooperate graphic and element numbers is done more detailed description to mode of execution of the present utility model.

At first consult Fig. 1 and Fig. 2, the leakage protection device that the utility model provides, be provided with an axis hole 14 at a body 1, the periphery of this axis hole 14 is provided with an annular air-flow path 12, form an annular wall 13 between annular air-flow path 12 and the axis hole 14, this annular wall 13 (promptly between this annular air-flow path 12 and the axis hole 14) is provided with the outlet passageway 131 of a plurality of inclination one angles, and this annular air-flow path 12 communicates by these outlet passageways 131 and axis hole 14; The angle of inclination of these outlet passageways 131 that distribute around this axis hole 14 internal diameters is preferably all identical, even these outlet passageways 131 have the radian of spiral, make that gas blows out from this outlet passageway 131 after, can flow along the circumference of these axis hole 14 internal diameters.Further, preferably be provided with runner 132 again at axis hole 14 internal diameters, and the outlet of this outlet passageway 131 is positioned at the bottom surface of this runner 132 along the shaft hole diameter circumferential extension.

As shown in Figure 2, by leakage protection device of the present utility model, described inlet hole 11 can be connected to gas pressure source, when gas pressure source supply pressurized air enters from inlet hole 11, the annular air-flow path 12 of flowing through, taken advantage of a situation and in this annular air-flow path 12, flowed, flowed out from this outlet passageway 131 again along a direction.

Fig. 3 demonstration utilizes leakage protection device of the present utility model to be installed on the embodiment of industry wet process, the body 1 of described leakage protection device is located at dividing plate 3 outsides of wet process equipment, the axis hole 14 of body 1 and the vent 31 of dividing plate 3 are passed in 2 of the rotating shafts of wet process equipment, are keeping very little gap between the internal diameter of the external diameter of rotating shaft 2 and axis hole 14.Described inlet hole 11 can connect a joint 4, this joint 4 is connected to gas pressure sourcies such as air compressor via the pipeline (not shown) again, when gas pressure source is imported pressurized gas via joint 4 and inlet hole, pressurized gas is able to via the path flow shown in Fig. 2 arrow to axis hole 14, and impact to the external diameter surface of rotating shaft 2, and then flow out at a high speed from the both sides of body 1, wherein the gas of a side more can enter the dividing plate inboard via the vent 31 of dividing plate 3, high pressure by pressurized gas is with the gasifying liquid A in the wet process, or even gas barrier, ooze out from the slit between rotating shaft 2 and the axis hole 14 avoiding.

In addition, utilize leakage protection device structure shown in Figure 2, also can be applied to air-bearing shown in Figure 45, this air-bearing 5 is a kind ofly to be used for making up rotating shaft 2, but the bearing unit that does not directly contact with rotating shaft 2, it has structure shown in Figure 2, after this air-bearing 5 is combined in dividing plate 3, flexible thing 6 (for example waterproof membrane etc.) also further is set, again in flexible thing 6 arranged outside one pressing plate 7, flexible thing 6 is fixed in dividing plate 3 in the inboard of dividing plate; This air-bearing 5 is after having made up rotating shaft 2, also provide pressurized gas to enter air-bearing 5 by the joint 4 that is connected in gas pressure source, act on rotating shaft 2 external diameters by pressurized gas and come supporting shaft, rotating shaft can be rotated under the situation that does not touch the air-bearing internal diameter, utilize this pressurized gas to stop the gasifying liquid or the gas leak of dividing plate 3 inboards simultaneously.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. leakage protection device, it is characterized in that, be provided with an axis hole at a body, and the annular air-flow path that is centered around this axis hole periphery, be provided with the outlet passageway of a plurality of inclination one angles between this annular air-flow path and this axis hole, the runner that described shaft hole diameter is provided with and this outlet passageway communicates, this body also is provided with and this annular air-flow path communicates, and the inlet hole of the angle that tilts, formation feeds this annular air-flow path from this inlet hole, and the current path along this annular air-flow path to this outlet passageway.

2. leakage protection device as claimed in claim 1 is characterized in that, described runner is circular along the internal diameter circumferential extension of this axis hole.

3. leakage protection device as claimed in claim 1 is characterized in that, the angle of inclination of the outlet passageway that distributes around this shaft hole diameter is all identical, forms the path of giving vent to anger of the circumference from this outlet passageway to this shaft hole diameter.

4. leakage protection device as claimed in claim 3 is characterized in that described outlet passageway has the radian of spiral.