CN201881198U

CN201881198U - Anti-return device

Info

Publication number: CN201881198U
Application number: CN2010206478387U
Authority: CN
Inventors: 李展帆; 庄克芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-02
Filing date: 2010-12-02
Publication date: 2011-06-29
Anticipated expiration: 2020-12-02

Abstract

The utility model relates to an anti-return device which is provided with a water storage tank group, wherein the water storage tank group is provided with a first water storage tank and a second water storage tank, the first water storage tank and the second water storage tank are connected with a pipeline group, the pipeline group is provided with a first entrance pipe and a first discharge pipe which are connected with the first water storage tank, as well as a second entrance pipe and a second discharge pipe which are connected with the second water storage tank, the first entrance pipe and the second entrance pipe are connected with a workbench, the first discharge pipe and the second discharge pipe are connected with a vacuum pump, and a valve group is arranged on the pipeline group so as to realize switching between the first water storage tank and the second water storage tank with the help of the valve group.

Description

Back-flow preventer

Technical field

The utility model relate to a kind of thin plate (as: liquid crystal panel, circuit board, face glass ... etc.) employed vacuum suction equipment in the cutting process, especially refer to rely on the switching of valve sets to make procedure for processing unaffected, and effectively avoid the interior fluid of aqua storage tank group because of full back-flow preventer that enters in the vavuum pump.

Background technology

General thin plate (as: liquid crystal panel, circuit board, face glass ... etc.) in the cutting process, can earlier machining object be positioned over the vacuum cup top, and after relying on alignment device that machining object is adjusted to appropriate location, allow vavuum pump continue the interior air of extracting vacuum sucker, generation is near the state of vacuum (Vacuum), after making machining object closely be adsorbed in the vacuum cup surface, again machining object is processed; Owing to can utilize in the process cooling fluid or lubricating fluid to come cutting tool is lubricated or cools off, therefore if machining object produces breakage accidentally in process, vavuum pump still can continue vacuum cup is carried out the extraction of air, and then, make vavuum pump cause damage to use with in cooling fluid or the lubricating fluid suction vavuum pump.

Therefore, in order to prevent that vavuum pump from causing damage because of sucking cooling fluid or lubricating fluid, promptly there is relevant dealer to utilize the vacuum state of vacuum cup in the work of detection and examination of pressure detection device, when the pressure detection device detects vacuum cup when presenting the vacuum breaker state, promptly can stop the vavuum pump running, to prevent that vavuum pump from sucking cooling fluid or lubricating fluid, but this kind practice is located most machining object simultaneously at vacuum cup and is added man-hour, machining object can be subjected to displacement because of the suction that loses vavuum pump produces to remove to locate, cause unspoiled machining object can't proceed processing because of Working position moves, the machining object on whole vacuum cups all must be scrapped.

Therefore, how to solve above-mentioned existing problem and disappearance, be the problem of being engaged in research and development that this relevant dealer desires most ardently.

Summary of the invention

The purpose of this utility model is: a kind of back-flow preventer is provided, solves above-mentioned existing problem and disappearance.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of back-flow preventer is characterized in that: include aqua storage tank group, workbench, pipeline group, valve sets and vavuum pump, wherein:

This aqua storage tank group is provided with first aqua storage tank and second aqua storage tank, and is respectively arranged with the water level detector that is used for detecting water level in first aqua storage tank and second aqua storage tank;

This pipeline group be provided be connected in first of first aqua storage tank enter the pipe with first discharge pipe, and be connected in second of second aqua storage tank enter the pipe with second discharge pipe, and first enters pipe enters pipe and is connected in workbench with second, and first discharge pipe and second discharge pipe are connected in vavuum pump;

This valve sets enters pipe and second first and enters the pipe place and be provided with and be used for switching first and enter the transfer valve that pipe and second enters pipe and workbench connected state, and first discharge pipe be provided with first switch valve that is used for switching first aqua storage tank and vavuum pump connected state, and second discharge pipe is provided with the second switch valve that is used for switching second aqua storage tank and vavuum pump connected state.

Wherein: this first aqua storage tank and second aqua storage tank are respectively arranged with and are used for the draining valve of draining.

Wherein: be connected with gas bomb between this vavuum pump and first discharge pipe and second discharge pipe.

Wherein: be connected with drying device between this vavuum pump and first discharge pipe and second discharge pipe.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:

The utility model utilizes the aqua storage tank group, makes fluid when vavuum pump flows through the aqua storage tank group, because of the gravity of fluid is stored in the aqua storage tank group, and can not enter to vavuum pump, to guarantee the normal operation of vavuum pump.

The utility model utilizes first aqua storage tank of aqua storage tank group and second aqua storage tank to be used alternatingly, and makes vavuum pump and workbench in the work need not stop or interrupting running, so that the machining object on the workbench can be finished processing smoothly.

Description of drawings:

Fig. 1 is the generalized section of the utility model preferred embodiment;

Generalized section () when Fig. 2 is the utility model preferred embodiment use;

Generalized section (two) when Fig. 3 is the utility model preferred embodiment use;

Fig. 4 is the utility model generalized section of a preferred embodiment again.

Description of reference numerals: 1-aqua storage tank group; 11-first aqua storage tank; 12-second aqua storage tank; 13-water level detector; The 14-draining valve; The 2-workbench; The 21-machining object; 3-pipeline group; 31-first enters pipe; 32-first discharge pipe; 33-second enters pipe; 34-second discharge pipe; The 4-valve sets; The 41-transfer valve; 42-first switch valve; 43-second switch valve; The 5-vavuum pump; The 6-gas bomb; The 7-drying device.

The specific embodiment

See also shown in Figure 1ly, find out that by knowing among the figure the utility model includes aqua storage tank group 1, workbench 2, pipeline group 3, valve sets 4 and vavuum pump 5, wherein:

This aqua storage tank group 1 is provided with first aqua storage tank 11 and second aqua storage tank 12, be respectively arranged with the water level detector 13 that is used for detecting water level in first aqua storage tank 11 and second aqua storage tank 12, and first aqua storage tank 11 and second aqua storage tank 12 are respectively arranged with and are used for the draining valve 14 of draining.

This pipeline group 3 be provided be connected in first of first aqua storage tank 11 enter the pipe 31 and first discharge pipe 32, and be connected in second of second aqua storage tank 12 enter the pipe 33 and second discharge pipe 34, and first enters pipe 31 and second enters and manages 33 and be connected in workbench 2, and first discharge pipe 32 and second discharge pipe 34 are connected in vavuum pump 5.

This valve sets 4 enters pipe 31 and second in first and enters pipe 33 places and be provided with and be used for switching first and enter pipe 31 and second and enter and manage 33 and the transfer valve 41 of workbench 2 connected states, and be provided with first switch valve 42 that is used for switching first aqua storage tank 11 and vavuum pump 5 connected states in first discharge pipe 32, and second discharge pipe 34 is provided with the second switch valve 43 that is used for switching second aqua storage tank 12 and vavuum pump 5 connected states.

See also shown in Figure 2, find out by knowing among the figure, when the utility model when using, earlier the transfer valve 41 of valve sets 4 is switched to first and enter pipe 31 and be the state that is communicated with, again first switch valve 42 is switched to the state that is communicated with vavuum pump 5, and second switch valve 43 switches to and vavuum pump 5 disconnected states, make in second aqua storage tank 12 and present normal pressure, and startup vavuum pump 5, allow vavuum pump 5 rely on first to enter pipe 31, first aqua storage tank 11 and first discharge pipe 32, extract the gas of workbench 2 out form vacuum state (negative pressure), the machining object 21 that workbench 2 surfaces are placed utilizes vacuum state to form the location, thereafter, rely on fluid (as: cooling fluid again, lubricating fluid) assist processed machining object 21, when machining object 21 careless generations are broken, fluid promptly can enter first because of the suction of vavuum pump 5 and enter pipe 31, this moment, fluid can drop downwards because of gravity, and then be stored in first aqua storage tank 11, can not flow to vavuum pump 5, to guarantee the normal operation of vavuum pump 5 via first discharge pipe 32.

See also shown in Figure 3, find out by knowing among the figure, when vavuum pump 5 and workbench 2 continue in the running, and water level detector 13 detects fluids in first aqua storage tank 11 when reaching full position, then must switch to second aqua storage tank 12, at this moment, for switching second switch valve 43 earlier to being the state that is communicated with vavuum pump 5, make second aqua storage tank, 12 internal cause vavuum pumps 5 present vacuum state, make aqua storage tank group 1 and pipeline group 3 all reach vacuum state, again transfer valve 41 is switched to second and enter pipe and 33 be the state that is communicated with, make transfer valve 41, second enters pipe 33, second aqua storage tank 12, the passage that second discharge pipe 34 and vavuum pump are 5 is the state near vacuum, first switch valve 42 is switched to and vavuum pump 5 disconnected states again, make in first aqua storage tank 11 and present normal pressure, allow air flow towards vavuum pump 5, so that first aqua storage tank 11 and second aqua storage tank 12 continue to be used alternatingly in the running at vavuum pump 5 and workbench 2 via second aqua storage tank 12.

Moreover the stored fluid of first aqua storage tank 11 or second aqua storage tank 12 can manual type be opened draining valve 14 and is emitted, or opens draining valve 14 with automatic control mode and emit.

See also shown in Figure 4, find out by knowing among the figure, the utility model is connected with gas bomb 6 and drying device 7 between vavuum pump 5 and first discharge pipe 32 and second discharge pipe 34, though the fluid in the pipeline group 3 is for can be stored in first aqua storage tank 11 or second aqua storage tank 12, but still can contain moisture in the air that vavuum pump 5 is extracted, therefore drying device 7 is can be with airborne moisture filtering, so that vavuum pump 5 is difficult for more because of moisture damages, can prolong its service life; And this gas bomb 6 can remain vacuum state at any time because of the running of vavuum pump 5, therefore when valve sets 4 in switching first aqua storage tank 11 and second aqua storage tank 12 during with state that vavuum pump 5 is communicated with, pipeline group 3 internal pressures can not produce excessive variation moment, keep positioning states can make the machining object 21 on the workbench 2.

Be with, the utility model for can solve the deficiencies in the prior art and disappearance, and can promote effect, its key technology is to be:

(1) the utility model is for utilizing aqua storage tank group 1, makes fluid when vavuum pump 5 flows through aqua storage tank group 1, because of the gravity of fluid is stored in aqua storage tank group 1, and can not enter to vavuum pump 5, to guarantee the normal operation of vavuum pump 5.

(2) the utility model is to utilize first aqua storage tank 11 of aqua storage tank group 1 and second aqua storage tank 12 to be used alternatingly, and makes the vavuum pump 5 in the work need not stop or interrupting running with workbench 2, so that the machining object on the workbench 2 can be finished processing smoothly.

More than explanation is just illustrative for the utility model; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within the protection domain of the present utility model.

Claims

1. back-flow preventer is characterized in that: include aqua storage tank group, workbench, pipeline group, valve sets and vavuum pump, wherein:

2. back-flow preventer according to claim 1 is characterized in that: this first aqua storage tank and second aqua storage tank are respectively arranged with and are used for the draining valve of draining.

3. back-flow preventer according to claim 1 is characterized in that: be connected with gas bomb between this vavuum pump and first discharge pipe and second discharge pipe.

4. back-flow preventer according to claim 1 is characterized in that: be connected with drying device between this vavuum pump and first discharge pipe and second discharge pipe.