CN107018654A

CN107018654A - Wet-milling sand-spraying pot

Info

Publication number: CN107018654A
Application number: CN201580057052.5A
Authority: CN
Inventors: 约翰·麦金太尔
Original assignee: Liquid Control Corp
Current assignee: Liquid Control Corp
Priority date: 2014-11-06
Filing date: 2015-11-02
Publication date: 2017-08-04
Also published as: EP3215315A4; AU2015343395A1; WO2016073355A1; EP3215315A1; CA2960406A1; US20170334037A1; BR112017007718A2

Abstract

Wet-milling sand-spraying pot includes the cylindrical pressure vessel with top, bottom and the side wall extended between the top and the bottom.Bottom includes outlet, and top includes filling access.Top includes convex-head, and wherein filling access is located at the topmost of pressure vessel.

Description

Wet-milling sand-spraying pot

Background technology

Wet-milling sand blasting system is generally used in the case of needing grit blasting operation, and the grit blasting operation is due to environment or other factors Dry blasting condition is not resistant to.Wet-milling sand blasting system is used for the generation for controlling dust, while ensuring that the damage to base material is minimum.It is wet The slurry of abrasive media is pressed into compressed air stream by mill sand blasting system under controlled conditions.In sand-spraying pot or pressure vessel Load water and solid abrasive to form wet-milled slurry.It is very by the air clean in sand-spraying pot before grit blasting operation starts Important.Pressure (hydraulic) water makes slurry be discharged to from sand-spraying pot in pipe-line system, finally enters mixing point, in the mixing point by wet pulp Mixed with compressed air.The fluctuation of pressure flow in slurry or gas-pressurized will cause the inconsistent row of wet-milling sand blasting system For, and most cause uncontrollable or invalid sandblasting procedures at last.It has been found that the air entrainment in sand-spraying pot or pressure vessel It is the instable main cause of wet-milling sand blasting system.In system so far, in order to before being pressurizeed with water, clearly Except all air in sand-spraying pot or pressure vessel, air bleed valve is all employed.Unfortunately, these exhausts or purging system It is generally necessary to which the time of two to three minutes evacuates the air in sand-spraying pot or pressure vessel completely, so as to reduce wet blast The efficiency of operation.

If sand-spraying pot design of pressure vessels can be utilized, the entrainment of air is eliminated, and is therefore reduced or eliminated in spray The need for the entrainment air in pressure vessel is exhausted before starting for sand operation, this will be best and beneficial.

The content of the invention

Wet-milling sand-spraying pot includes having top, and the cylindrical pressure of bottom and the side wall extended between the top and the bottom holds Device.Bottom includes outlet, and top includes filling access.Top includes convex-head, and wherein filling access is located at pressure vessel Topmost.

Preferably, top also includes recessed disk-shaped top, and the foot of its concave disk-shaped top is connected at filling access The topmost of convex tip.Top preferably includes the outermost connection wall for being used to being connected to side wall into recessed disk-shaped top.

Brief description of the drawings

Fig. 1 is the constructed profile of the sand-spraying pot of the prior art with concave cephalad structure.

Fig. 2 is the constructed profile along the middle part interception for the sand-spraying pot for showing convex-head structure.

Fig. 3 is the schematic section along the middle part interception for the sand-spraying pot for showing convex-head structure and recessed dish type ennation Figure.

Fig. 4 is the schematic diagram of the wet-milling sand blasting system for the sand-spraying pot for including Fig. 3.

Embodiment

Fig. 1 is the description of the prior art to currently widely used wet-milling sand-spraying pot 100, and the wet-milling sand-spraying pot 100 includes Following critical piece：Pressure vessel 102, the pressure vessel 102 has side wall 104, concave top 106, bottom 108, outlet 110 With filling access 112.

In addition, pressure vessel 102 limits inside 114, and also includes ejection valve 116, for entering for cleaning pressure container Entrance 118, air pressure release 120 (allowing captured air 124 to be purged to air 122) and water level 126.Sand-spraying pot 100 also include the supporting leg 130 of support pressure vessel 102 and the disk-shaped top 106 including concave cephalad 128.

In use, the sand-spraying pot 100 of prior art is filled abrasive material and water by filling access 112, until pressure holds The inside 114 of device 102 is filled by highland as far as possible, and it is generally by close to the water level 126 shown in Fig. 1.Top 106 is by recessed panhead Portion 128 is constituted.Due to the geometric configuration of concave cephalad 128, as shown in figure 1, air 122 is caught as captured air 124 Obtain in the space below the top of water level 126 and concave cephalad 128.

Due to the position of filling access 112, under gravity filling, it is difficult to so that the water and abrasive material in pressure vessel 102 are high In water level 126.Once abrasive material and water are filled into water level 126, then ejection valve 116 is closed, and then starts to remove what is be captured Air 124.

Now, sand-spraying pot 100 is pressurizeed with pressure (hydraulic) water.Air release valve 120 allow captured air 124 be released and from The discharge of inside 114 of pressure vessel 102 is air 122, untill water level 126 reaches packed height 132, the packed height 132 be to be limited to the top point at the position of the topmost of the contact concave cephalad 128 of side wall 104.

Sand-spraying pot 100 is using inversion or concave cephalad 128, and it is not only used as the top of pressure vessel 102, also served as Sand-blasting abrasive and water are incorporated into the funnel and/or dish type hopper of the filling access 112 of sand-spraying pot 100.

The shortcoming of prior art design shown in Fig. 1 is that the air 124 of capture is clipped in sand-spraying pot 100 by concave cephalad 128 Filling access 112 top.Therefore, sand-spraying pot 100 must allow captured air 124 equipped with air release valve 120 Escaped as air 122.This removing or discharge of captured air 124 may need two to three minutes, and cause wet Grind the productivity ratio reduction of sand blasting system.

Fig. 2 shows sand-spraying pot 200, and it includes following critical piece：Limit internal 214 pressure vessel 202, inside this 214 by side wall 204, top 250, bottom 108 (it includes the outlet 110 at bottom 108), the filling access at top 250 112 are constituted.Different from the sand-spraying pot 100 of prior art, sand-spraying pot 200 includes the convex-head 252 of convex configuration.

In use, abrasive material and water are filled into filling access 112.Due to the structure of convex-head 252 as shown in Figure 2 Make, water and abrasive material can be filled into packed height 232 (packed height is at least the bottom of filling access 112) always, so that Ensure once water and abrasive material are filled into top and reach packed height 232 always, then almost do not have or do not have in pressure vessel 202 There is the air of entrainment.

The shortcoming of this design is not make the funnel or disk that water and abrasive material are leak into pressure vessel 202 at top 250 Shape hopper construction.This may cause abrasive material and a large amount of spillings of water and waste.

Fig. 3 shows sand-spraying pot 300, and it includes following critical piece：That is pressure vessel 302, the pressure vessel 302 is by side Wall 304, includes the bottom 108 of outlet 110, top 370 (it includes convex-head 252 and connection wall 362), and recessed dish type top Portion 360 is constituted.Sand-spraying pot 300 also includes filling access 112, ejection valve 116 and inlet port 118.

In the present embodiment, sand-spraying pot 300 includes above-mentioned all advantages for sand-spraying pot 200, wherein with the addition of one Recessed disk-shaped top, the recessed disk-shaped top is connected at filling access 112 with convex-head 252, and is supported by connection wall 362.Spray Silo 300 will not capture any air, because at packed height 380, most of (if not all) air are from pressure The inside 214 of force container 302 is eliminated by the filling access 112 at the peak of pressure vessel 302.However, sandblasting The also sand-spraying pot including prior art of tank 300 designs the advantage of 100 parts because the sand-spraying pot 300 include as funnel and/or The recessed disk-shaped top 360 of dish type hopper, for abrasive material and water are directed in the filling access of pressure vessel 302.

Fig. 4 is the schematic diagram of the wet-milling sand blasting system using sand-spraying pot 300, and it includes following additional not shown in Fig. 3 Part.Water pump 400 (it is preferably piston pump of the pneumatic air on water) carries out water supply 402 and it is pressurizeed simultaneously It is delivered to water inlet 404 under stress, so as to add to the water abrasive material mixture 406 in the inside 214 of pressure vessel 302 Pressure.Water abrasive material mixture 406 is slurry, and the slurry is forced out by outlet 110, by transmitting flexible pipe 410 upwards, and is passed through Ball valve 412, and pass through grip both hose 416, in water abrasive material mixture 406 before mixing point 420 enters T-connector 418, the folder Tight flexible pipe 416 can be turned off with pinched valve 414.

Independently, compressed air (usually from Large Copacity air compressor) is transported through air valve 424 by air-source 22, And check-valves 421 is to be transported to mixing point 420.At mixing point 420, compressed air is blended in water abrasive material mixture 406 Together, and sand-blast hose 426 is forced through and eventually through blast nozzle 428, so as to form what is discharged from blast nozzle 428 Air water abrasive material sandblasting 430.

How the sand-spraying pot 300 that Fig. 4 schematically shows new idea is used together with typical wet-milling sand blasting system.

Sand-spraying pot 200 may also be used in like configurations as shown in Figure 4.

It will be apparent to one skilled in the art that without departing from the scope of spirit of the present invention, Above-mentioned this structure can be carried out limiting in various modifications and improvements, the scope of the present invention appended claims.

Claims

1. a kind of sand-spraying pot for wet-milling sand blasting system, the sand-spraying pot includes：

Including side wall, the cylindrical pressure vessel at bottom and top；

Wherein described bottom includes outlet；

Wherein described top includes convex-head；With

Wherein described convex-head includes the filling access of the topmost positioned at the pressure vessel.

2. sand-spraying pot according to claim 1, wherein the top also includes recessed disk-shaped top, and wherein described recessed disk Foot at the top of shape is connected to the topmost of the convex-head at the filling access.

3. sand-spraying pot according to claim 2, wherein the top also includes the side wall being connected to the recessed dish type The outermost connection wall at top.

4. a kind of sand-spraying pot for wet-milling sand blasting system, the sand-spraying pot includes：

Cylindrical pressure vessel, it includes：

Bottom；

Outlet, it is located in the bottom；

Convex-head；

Filling access, it is located at the topmost of the convex-head；With

Side wall, it extends between the bottom and the convex-head；With

Recessed disk-shaped top, it is arranged in the convex-head, wherein the foot of the recessed disk-shaped top is packed into described The topmost of the convex-head is connected at mouthful.

5. sand-spraying pot according to claim 4, in addition to：

The side wall is connected to the outermost connection wall of the recessed disk-shaped top.