CN108145615A - The blasting method and device of pipe inner face - Google Patents
The blasting method and device of pipe inner face Download PDFInfo
- Publication number
- CN108145615A CN108145615A CN201711231792.3A CN201711231792A CN108145615A CN 108145615 A CN108145615 A CN 108145615A CN 201711231792 A CN201711231792 A CN 201711231792A CN 108145615 A CN108145615 A CN 108145615A
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- CN
- China
- Prior art keywords
- processing tube
- air
- tube
- grind
- sand blasting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
- B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/006—Treatment of used abrasive material
Abstract
The sand blasting unit of pipe inner face provided by the invention is swept material conveying effect and is reached entirely by processing tube regardless of that by the size of processing tube, promptly can make to grind；The sand blasting unit of the pipe inner face has：It is sprayed from the upstream end (P2) by processing tube (P) with air-tight state from the suction device (7) for being attracted inner air tube by the downstream (P1) of processing tube (P) and into pipe and grinds the injection apparatus (3) for sweeping material and air；Make to grind the high forces swept material and air and flowed from upstream toward downstream in pipe from by the both ends (P1, P2) of processing tube (P) while application as a result,；Therefore, even if length L long small or by processing tube by the internal diameter of processing tube (P) etc. only be difficult to make in a short time by vacuum suction effect to grind the conveying for sweeping material effect reach entirely by processing tube (P) in the case of, also will can effectively grind and sweep material and be delivered to entirely by processing tube (P).
Description
Technical field
The present invention relates to the inner surface to various pipes (by processing tube) grind and sweep (shot blastinog), grinding, grinding etc.
The blasting method and sand blasting unit of pipe inner face and the pipe inner face sand blasting system comprising the sand blasting unit.
Background technology
Inner surface as the pipe (by processing tube) to steel pipe etc. grind sweeping, grinding, being ground etc. and (hreinafter referred to as " be ground
Sweep ") pipe inner face blasting method, it is known to high-pressure injection formula blasting method and negative pressure sucktion type blasting method.High-pressure sand blast
Formula blasting method is to be blown into the method (figure referring to patent document 1 that air and grinding sweeps material to by the inside of processing tube with high pressure
12 and specification [0004]-[0018] paragraph), negative pressure sucktion type blasting method be by make to be become in processing tube negative pressure from
And the method in material suction line of sweeping (Figure 14 and specification [0026]-[0032] paragraph referring to patent document 1) will be ground.From
Each viewpoints such as economy, laborsaving and energy saving, safety, maintenance, environmental sanitation are set out, it may be said that usually preferential choosing at present
With negative pressure sucktion type blasting method.
【Existing technical literature】
【Patent document】
Patent document 1：JP Publication, Unexamined Patent No. 7-1335 number
Patent document 2：JP Publication, tekiaki No. 50-1562 number
Patent document 3：JP Publication, Unexamined Patent No. 7-227762 number
Invention content
But it is small by the internal diameter of processing tube or by processing tube length length in the case of, due to the pressure loss become
Greatly, thus there are problems that the conveying effect that material is swept by grinding caused by negative pressure be difficult to reach entirely by processing tube this.Though
The time it is also possible that grind for so increasing vacuum suction sweeps the conveying effect of material and reaches entirely by processing tube, but can cause in this way
It grinds and sweeps treatment effeciency reduction, operability is deteriorated.
In the blasting method of existing pipe inner face, it is known to as shown in patent document 2, be swept under pipe 22 from being ground
Trip end, which attracts, is ground the air swept in pipe 22 and makes to be ground to sweep and become negative pressure in pipe 22, and is supplied from the upstream end of sweeping pipe 22 is ground
It grinds and sweeps material 14 and by this mode of the supply compressed air of nozzle 11.
But in this case, as shown in Fig. 1 of patent document 2, with being ground what the upstream end for sweeping pipe 22 was connected
The upstream end 24 of delivery pipe 6 is open, so as to suck air from the opening portion 24.Therefore, the compressed air supplied from nozzle 11
Also the effect that the vacuum suction effect generated for dust catcher 18 is assisted only is played.Therefore, the length for sweeping pipe is being ground
Relative to ground the bore of sweeping pipe 22 it is extremely long in the case of, make to grind the conveying for sweeping material effect and reach entirely to be ground and sweep pipe 22 and expend
Time, so as to it's hard to say fully solving the above problems.
In addition, another example of the blasting method as pipe inner face, it is known to such as specification [0028] section of patent document 3
Recorded in falling, " air blower 23 for grinding the machine of sweeping 15 laterally applies negative pressure suction force, compressed air spray from receiving magazine 22 by processing tube 13
Mouth 24 is laterally blown into the compressed air of eddy flow from inlet head (suction head) 21 by processing tube 13.As a result, from being handled
What one end 13A of pipe 13 flowed to other end 13B grinds the eddy flow for sweeping material to grind sweeping by the inner surface of processing tube 13.”
But in patent document 3, from the record of its specification [0023], [0024] paragraph and Fig. 2, Fig. 3 it is found that
The top of inlet head 21 is upwardly opening, so that negative pressure suction force effectively plays a role, and successfully sweeps material tank and supplies from grinding
Material is swept to grinding.Also, the compressed air supplied from compressed-air atomizer 24 is used only for forming eddy flow.Therefore, it is being handled
The length of pipe relative to by the bore of processing tube it is extremely long when, make to grind the conveying for sweeping material effect to reach entirely to be ground and sweep pipe
The time is expended, so as to it's hard to say fully solving the above problems.
The present invention has been made in view of the above-described circumstances, and the present invention provides a kind of blasting method of pipe inner face and sandblasting dress
It puts and pipe inner face sand blasting system, is using the height as using existing negative pressure sucktion type pipe inner face sand blasting unit
The vacuum blower of output, or length small to internal diameter are grown to because can not be from by the upper of processing tube the problem of the pressure loss
What the degree of sweeping material delivery air was ground in the sucking of trip end by processing tube grind also effective when sweeping processing, also, no matter is handled
The size of pipe is how, promptly can make to grind sweep material conveying effect reach entirely by processing tube.
To solve the above-mentioned problems, the blasting method of pipe inner face of the present invention is characterized in that, from by processing tube
Air in the suction tube of downstream, and with air-tight state, the pressurized delivered into pipe grinds and sweeps material from the upstream end by processing tube
With air (claim 1).
According to the method for the present invention, the air out of downstream suction tube by processing tube, and from by the upstream of processing tube
With air-tight state, the pressurized delivered into pipe grinds and sweeps material and air at end.Make to grind and sweep from being applied simultaneously by the both ends of processing tube as a result,
The high forces that material and air flow in pipe from upstream toward downstream.Therefore, though by the internal diameter of processing tube it is small or by
Length length of processing tube etc. only is difficult to make to grind the conveying for sweeping material and act in a short time to reach entire by vacuum suction effect
In the case of by processing tube, it also will can effectively grind and sweep material and be delivered to entirely by processing tube.As a result, no matter by processing tube
How is size, effectively can make to grind and sweep effect and reach entirely by processing tube.
According to the method for the present invention, different from patent document 2,3, due to be from by the upstream end of processing tube with air-tight state
Into pipe, pressurized delivered, which is ground, sweeps material and air, therefore, is combined with the suction phase of inner air tube, can be effectively and practical in pipe
Ground conveying, which is ground, sweeps material.
As a better embodiment, following form can be enumerated, i.e.,：The ruler by processing tube as straight tube
It is very little to be：By substituting into concrete numerical value to P, γ, V (more than 80m/s) in following formula, and any one in L, D is substituted into specific
Below D obtained from numerical value or more than L (claim 2).
L/D=2P/ (0.02 × γ × V2)
L：By the length m of processing tube
D：By internal diameter (diameter) m of processing tube
P：Required pressure Pa
γ：Atmospheric density kg/m3
V：By the flow velocity m/s in processing tube
Size meets the applicable object that blasting method of the present invention is suitable as by processing tube of the condition.
The sand blasting unit of pipe inner face of the present invention is characterized in that having：From by the downstream suction tube of processing tube
The suction device of interior air and being sprayed from the upstream end by processing tube into pipe with air-tight state, which is ground, sweeps material and air
Injection apparatus (claim 3).
The apparatus according to the invention attracts inner air tube, and utilize spray using suction device from by the downstream of processing tube
Injection device from by the upstream end of processing tube, with air-tight state, grind and sweep material and air by the pressurized delivered into pipe.As a result, from being handled
The both ends of pipe apply to make to grind simultaneously sweeps the high forces that material and air flow in pipe from upstream toward downstream.Therefore, though
By the internal diameter of processing tube it is small or by processing tube length grow etc. only by vacuum suction effect be difficult to make to grind in a short time to sweep
The conveying effect of material reach entirely by processing tube in the case of, also will can effectively grind to sweep material and be delivered to and entirely handled
Pipe.It sweeps effect as a result, and reaches entirely by processing tube regardless of by the size of processing tube, effectively can making to grind.
As a better embodiment, following form can be enumerated, i.e.,：The ruler by processing tube as straight tube
It is very little to be：By substituting into concrete numerical value to P, γ, V (more than 80m/s) in following formula, and any one in L, D is substituted into specific
Below D obtained from numerical value or more than L (claim 4).
L/D=2P/ (0.02 × γ × V2)
L：By the length m of processing tube
D：By internal diameter (diameter) m of processing tube
P：Required pressure Pa
γ：Atmospheric density kg/m3
V：By the flow velocity m/s in processing tube
The grinding for sand blasting unit of the present invention that be suitable as by processing tube that size meets the condition sweeps process object.
As a better embodiment, which is characterized in that the injection apparatus has：Mixing unit, compared to described
Described grind is swept material and mixed with the air closer at the position of upstream side by the upstream end of processing tube；Closed
Service tank, be used to storing it is described grind to sweep material and grind to mixing unit supply sweep material；Pressure conveyer device, be used for
Pressurized delivered air in the mixing unit and in the service tank；And adjuster, it is used to control the internal pressure of the service tank,
So that the internal pressure of the service tank is equal with the internal pressure of the mixing unit or internal pressure (claim more than the mixing unit
5).In this case, since the internal pressure of service tank is controlled as pressure equal with the internal pressure of mixing unit or above,
It will can successfully grind and sweep material and supplied from service tank to mixing unit.
Pipe inner face sand blasting system of the present invention is characterized in that：Along by the input side of the pipeline of processing tube and
Outlet side is equipped with sand blasting unit respectively；The input side sand blasting unit for being disposed in input side has：From described by the one of processing tube
End attract inner air tube input side suction device and from the other end by processing tube as eddy flow and with air-tight state to
The input side injection apparatus for sweeping material and air is ground in injection in pipe；The outlet side sand blasting unit for being disposed in outlet side has：From institute
It states and the outlet side suction device of inner air tube is attracted and from described described one end by processing tube by the other end of processing tube
It is sprayed as eddy flow with air-tight state into pipe and grinds the outlet side injection apparatus (claim 6) for sweeping material and air.
Pipe inner face sand blasting system of the present invention, it is intended to it solves in using the grinding and sweep of the eddy flow for sweeping material progress is ground,
The grinding of pipe inner face sweep treatment effect led to the problem of between the both ends by processing tube difference this.
According to the present invention, processing is swept to being ground by processing tube implementation by input side sand blasting unit, then, along by processing tube
Pipeline convey by processing tube, and pass through outlet side sand blasting unit to being ground by processing tube implementation and being swept processing.
In input side sand blasting unit, attract inner air tube from by one end of processing tube using input side suction device, and
By the use of input side injection apparatus from sprayed by the other end of processing tube into pipe as eddy flow and with air-tight state grind sweep material and
Air.Make to grind and sweep material and air in pipe from by the other end court of processing tube from being applied simultaneously by the both ends of processing tube as a result,
The high forces flowed to one end.Therefore, though by the internal diameter of processing tube it is small or by processing tube length grow etc. only pass through
Vacuum suction effect be difficult to make in a short time to grind the conveying for sweeping material effect reach entirely by processing tube in the case of, also can
It will effectively grind and sweep material and be delivered to entirely by processing tube.
In outlet side sand blasting unit, attract inner air tube from by the other end of processing tube using outlet side suction device,
And by the use of outlet side injection apparatus from sprayed by one end of processing tube into pipe as eddy flow and with air-tight state grind sweep material and
Air.Make to grind and sweep material and air in pipe from by one end direction of processing tube from being applied simultaneously by the both ends of processing tube as a result,
The high forces of other end flowing.Therefore, though by the internal diameter of processing tube it is small or by processing tube length grow etc. only pass through
Vacuum suction effect be difficult to make in a short time to grind the conveying for sweeping material effect reach entirely by processing tube in the case of, also can
It will effectively grind and sweep material and be delivered to entirely by processing tube.
In the present invention, the action direction of attraction and injection is made (to grind the flowing side for sweeping material by processing tube for one
To) mutually reverse and implement to grind twice to sweep processing.Thereby, it is possible to grinding for the eddy flow between the both ends by processing tube is made to sweep treatment effect
Homogenization.Further, since input side sand blasting unit and the configuration of outlet side sand blasting unit are along by the defeated of the pipeline of processing tube
Enter side and outlet side, therefore, implementation is ground when sweeping processing without reversion for the second time by processing tube.Therefore, it is possible to easily be made
Industry, and treatment effeciency is also good.
As a better embodiment, which is characterized in that the input side sand blasting unit has：It is handled positioned at described
The another side of pipe, and for storing to input side service tank and the position that material is swept by grinding of being supplied in processing tube
In the one end by processing tube, and for receiving from the input side that material is swept by grinding after in processing tube
Receiving magazine；The outlet side sand blasting unit has：Positioned at the one end by processing tube, and for storing to the quilt
Outlet side service tank that grinding of supplying in processing tube sweeps material and positioned at the another side by processing tube, and be used for
It receives from the outlet side receiving magazine that material is swept by grinding after in processing tube；The input side receiving magazine and the output
Side service tank is connected, so as to which grinding in the input side receiving magazine is swept material is delivered to the outlet side service tank
It is interior；The outlet side receiving magazine is connected with the input side service tank, so as to by grinding in the outlet side receiving magazine
Material is swept to be delivered in the input side service tank (claim 7).
According to the embodiment, material is swept to grinding grinding after sweeping by the inner surface of processing tube in input side sand blasting unit
It puts into outlet side sand blasting unit again, similarly, to after being ground and sweeping by the inner surface of processing tube in outlet side sand blasting unit
Grind and sweep material and put into again in input side sand blasting unit, such iterative cycles utilize.Material is swept by iterative cycles profit due to grinding
With, thus it is very economical.
And then the input side receiving magazine for forming input side sand blasting unit is supplied with forming the outlet side of outlet side sand blasting unit
Case is respectively positioned on by the one end of processing tube.In addition, the outlet side receiving magazine of outlet side sand blasting unit is formed with forming input side spray
The input side service tank of sand device is respectively positioned on by the another side of processing tube.Therefore, input side receiving magazine and outlet side service tank
Between grind and sweep the length that grinding between material feeding channel and outlet side receiving magazine and input side service tank sweeps material feeding channel
Degree it is shorter also can, so as to grind sweep material feeding channel arranging layout it is also very simple.Therefore, it can save to grind and sweep material conveying
The arranging cost of channel, so as to more economical.
Description of the drawings
Fig. 1 is the composition figure for the sand blasting unit of pipe inner face that one embodiment of the present invention is related to.
Fig. 2 is the enlarged cross-sectional view of the injection apparatus in the sand blasting unit of Fig. 1.
Fig. 3 is the schematic top plan view of pipe inner face sand blasting system that one embodiment of the present invention is related to.
(symbol description)
The sand blasting unit of 1 pipe inner face
1a input side sand blasting units
1b outlet side sand blasting units
3 injection apparatus
3a input side injection apparatus
3b outlet side injection apparatus
4 service tanks
4a input side service tanks
4b outlet side service tanks
5 mixing unit
6 pressure conveyer devices
7 suction devices
7a input side suction devices
7b outlet side suction devices
9a input side receiving magazines
9b outlet side receiving magazines
18 adjusters
P is by processing tube
P1 is by the downstream of processing tube
P2 is by the upstream end of processing tube
Pa is by one end of processing tube
Pb is by the other end of processing tube
Specific embodiment
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.
As shown in Figure 1, the sand blasting unit 1 for the pipe inner face that one embodiment of the present invention is related to, which has, attracts retracting device 2
With injection apparatus 3, wherein, attract air of the retracting device 2 out of downstream P1 suction tubes by processing tube P, and recycle participation
Grind sweep grind to sweep material or grind and sweep bits, injection apparatus 3 is swept from spraying to grind into pipe with air-tight state by the upstream end P2 of processing tube P
Material and air.
Injection apparatus 3 is being close to sweep job position (position shown in Fig. 1) and separate quilt by grinding for the upstream end P2 of processing tube P
It is moved freely between the retreating position (position after being moved to the left from position shown in FIG. 1) of the upstream end P2 of processing tube P.And
And by after it will be connect by the downstream P1 of processing tube P with attraction retracting device 2, filling the injection positioned at retreating position
It puts 3 and is moved to shown in FIG. 1 grind and sweep job position, so as to which injection apparatus 3 will be maintained at by processing tube P with attracting retracting device 2
Between.Under the hold mode processing is swept to being ground by processing tube P implementations.It is swept after processing terminates grinding, by making injection apparatus 3
It is moved to retreating position and will be discharged by processing tube P, so as to be located along pipeline (direction vertical with the paper of Fig. 1) conveying
Manage pipe P.
In addition, injection apparatus 3 can also be by being mounted in 35 first-class mode of cart and along by the length direction of processing tube P
Substantially move.By this composition, different length by processing tube P implementations can be ground and sweep processing.
Injection apparatus 3 has service tank 4, mixing unit 5 and pressure conveyer device 6.Service tank 4 is for storing to being handled
Material is swept in grinding for supplying in pipe P, and this is ground and sweeps material and supplies to mixing unit 5.Mixing unit 5 is compared to by the upstream of processing tube P
End P2 sweeps material and is mixed with air closer to will grind at the position of upstream side.Pressure conveyer device 6 is used for into mixing unit 5
With supply compressed air in service tank 4.As pressure conveyer device 6, other than such as compressor, the rule that spue can also be used
The pressure fan such as the Roots blower of lattice.What is be mixed in mixing unit 5 grinds the air for sweeping material and conveying, by processing tube P
It is interior from upstream end P2 towards downstream P1 flow at high speed, in the flow process, grind sweep material to by the inner surface of processing tube P into
Row, which is ground, to be swept.Participate in grinding grinding of sweeping sweep material with together with the air of conveying under the vacuum suction for attracting retracting device 2 from by from
The downstream P1 of reason pipe P is flowed out and is recovered.
Retracting device 2 is attracted to be made of suction device 7 and retracting device 8.Suction device 7 uses such as dry type or wet type sieve
Vacuum blower or vacuum pump of thatch air blower etc. etc..It is configured in suction device 7 and between the downstream P1 of processing tube P
There is retracting device 8.It participates in being swept material by the grinding of sweeping of grinding of the inner surface of processing tube P, being passed through ginseng to recycle by the retracting device 8
It is swept and broken grinding is swept material or ground and sweep bits etc. with grinding.Retracting device 8 includes receiving magazine successively from the upstream side
(receiver tank) 9, cyclone separator 10 and dust catcher 11.Receiving magazine 9 grinds grinding after sweeping for reception and sweeps material
Material, and accommodate a part this grinds and sweeps material.Cyclone separator 10 for detach grind sweep after completely broken granular grind does not sweep material yet
Material and the air of conveying.Dust catcher 11 sweeps material or grinds the air for sweeping bits and conveying for detaching broken grind.Moreover,
It removes the clean air after above-mentioned foreign matter and is emitted into air by being disposed in the muffler 12 of the exhaust side of suction device 7
In.
It is inadequate that only there is suction device 7 recycling, which to participate in grinding the attraction swept needed for material of grinding swept,.Suction device 7 must
Must have as used in existing negative pressure sucktion type pipe inner face sand blasting unit, it can by processing tube for normal size
Make entirely to be generated in processing tube in a short time and grind the negative pressure suction force for sweeping material delivery air.That is, present embodiment is related to
The sand blasting unit 1 of pipe inner face be to use the height output as using existing negative pressure sucktion type pipe inner face sand blasting unit
Suction device, for internal diameter is small or length is grown to because can not be from by the upstream end of processing tube P the problem of the pressure loss
What the degree of sweeping material delivery air was ground in P2 suckings by processing tube P grind when sweeping processing also effective device.
Suitable for using the sand blasting unit 1 of pipe inner face of the present embodiment grind sweep processing by processing tube P
The relationship of diameter D and length L, can be determined in the following way.
In general, it is A (=π D in opening area2×1/4)(m2) straight tube (intrinsic loss coefficient ζ=0.02 × L/
D make a certain air quantity Q (m in)3/ min) air flowing needed for pressure P (Pa), according to internal diameter (diameter) D (m) of straight tube and long
Spend L (m), atmospheric density γ (kg/m3) (for example, atmospheric density γ=1.2kg/m under 20 DEG C of atmospheric pressure3) and lead to out of pipe
The speed V (=Q/60A) (m/s) for the air crossed simultaneously is proceeded as follows determining (darcy-Wei Si Bahe formula).
P=ζ × γ × V2/2……(1)
P=0.02 × L/D × γ × V2/2……(2)
Wherein, P：Required pressure (pressure loss) Pa
A：The sectional area m of straight tube2
(A=π D2×1/4)
Q：Air quantity m3/min
V：Flow velocity (V=Q/60A) m/s
γ：Atmospheric density kg/m3
(atmospheric density γ=1.2kg/m under 20 DEG C of atmospheric pressure3)
ζ：The intrinsic loss coefficient of straight tube (ζ=0.02 × L/D)
D：Internal diameter (diameter) m of straight tube
L：The length m of straight tube
Also, the suction pressure of suction device 7 has intrinsic limiting value.For example, suction device 7 is roused using dry type Roots
The limiting value of suction pressure is 60kPa during wind turbine, the use of the limiting value of suction pressure during wet type Roots blower is 95kPa, makes
Limiting value with suction pressure during vacuum pump is 101.3kPa.In the case where above-mentioned required pressure is more than above-mentioned limiting value, this
The sand blasting unit 1 for the pipe inner face that embodiment is related to becomes effective.
Therefore, in above-mentioned formula (2), by out of pipe by air speed vset for desired value (it is as described below,
It is preferred that more than V=80m/s), and in the case of being set as the required pressure more than above-mentioned limiting value, pipe of the present embodiment
The sand blasting unit 1 of inner face becomes effectively to be determined by the internal diameter D of processing tube P and the relationship of length L.For example, when will be by processing tube P
Internal diameter D when being determined as certain value, determined by the preferred shortest length L of processing tube P, when will be determined by the length L of processing tube P
During for certain value, determined by the preferred maximum inner diameter D of processing tube P.
Become after being deformed to above-mentioned formula (2)：
L/D=2P/ (0.02 × γ × V2)……(3)
In above-mentioned formula (3), if for example, assuming
P=70kPa=70000Pa
V=80m/s
γ=1.2kg/m3(under 20 DEG C of atmospheric pressure),
Then L/D ≈ 911.46 ... (4)
Wherein, if assuming D=0.08 (m), L ≈ 72.92 (m)
Therefore, by the internal diameter D of processing tube P in the case of 0.08m, when the length L by processing tube P 72.92m with
When upper, processing was swept although using existing negative pressure sucktion type pipe inner face sand blasting unit can not grind, this implementation can be utilized
The sand blasting unit 1 for the pipe inner face that mode is related to, which grind, sweeps processing.
In addition, in above-mentioned formula (4), if assuming L=50 (m), D ≈ 0.055 (m).
Therefore, in the case where being 50m by the length L of processing tube P, when the internal diameter D by processing tube P is in below 0.055m
When, processing is swept although using existing negative pressure sucktion type pipe inner face sand blasting unit can not grind, this embodiment party can be utilized
The sand blasting unit of pipe inner face that formula is related to, which grind, sweeps processing.
The sand blasting unit 1 for the pipe inner face being related to according to the present embodiment, using suction device 7 from by the downstream of processing tube P
The air in P1 suction tubes is held, and defeated from being pressurizeed by the upstream end P2 of processing tube P with air-tight state into pipe using injection apparatus 3
It send to grind and sweeps material and air.As a result, from by the both ends of processing tube P simultaneously apply make to grind sweep material and air in pipe from upstream to
The high forces of downstream flow.Therefore, even if by the internal diameter D of processing tube P is small or length L long by processing tube P etc. is only logical
Cross vacuum suction effect be difficult to make in a short time to grind the conveying for sweeping material effect reach entirely by processing tube in the case of, also can
Enough will effectively grind is swept material and is delivered to entirely by processing tube.It, can be effectively as a result, regardless of by the size of processing tube
Make to grind and sweep effect and reach entirely by processing tube P.
Then, above-mentioned injection apparatus 3 is described in detail.As shown in Fig. 2, the top of service tank 4 has funnel 13.It is logical
It crosses the funnel 13 and puts into grind into service tank 4 and sweep material.The lower surface of service tank 4, which is configured with to grind in a manner of directed downwardly, sweeps material flow
Outlet pipe 14.This grind sweep material effuser 14 via amount adjusting valve 15 be disposed in lower section mixing unit 5 connect.Therefore, in service tank 4
Grind sweep material by grind sweep material effuser 14 and amount adjusting valve 15 after fall into mixing unit.Moreover, pass through rotating operation tune amount
The operation cock 16 of valve 15, can adjust fall into mixing unit 5 grind the amount for sweeping material.
Compressed air is supplied from pressure conveyer device 6 to mixing unit 5.Therefore, it if not taking any measure, can hinder to grind
Material is swept to fall into mixing unit 5 from service tank 4.Therefore, also the compressed air of self-pressurization in future conveying device 6 imports service tank 4
It is interior, and pressure sensor 17 and adjuster 18 are set, wherein, pressure sensor 17 detects the internal pressure of mixing unit 5, adjuster 18
It receives the detection signal of the pressure sensor 17 and the internal pressure of service tank 4 is controlled, so that the internal pressure of service tank 4 is with mixing
The internal pressure in portion 5 is equal or above.Thereby, it is possible to by the control of the internal pressure of service tank 4 be it is identical with the internal pressure of mixing unit 5 or
Pressure on it is swept material and is successfully fallen into mixing unit 5 from service tank 4 so as to make to grind.
Compressed air from pressure conveyer device 6 is delivered to header tank (header by being pressurized after air dryer 19
tank)20.Header tank 20 is connected via primary air piping 21 with mixing unit 5.Air valve 22 is equipped in primary air piping 21.In addition,
Header tank 20 is connected via secondary air line 23 with service tank 4.On secondary air line 23, it is equipped successively since 20 side of header tank
Above-mentioned adjuster (electropneumatic controller) 18 and residual voltage air bleeding valve 24.Secondary air line 23 charges into service tank 4 with airtight conditions
It is interior, and the center upper portion position in service tank 4 extends and is open upward.In the upwardly opening portion 25, move up and down freely
Ground is fitted into the closed control valve 26 being made of umbrella shape valve body.The closed control valve 26 is in raised position by the lower end of funnel 13
Opening portion 27 is closed, and opens the lower end opening portion 27 of funnel 13 at down position.When by secondary air line 23 from header tank
20 into service tank 4 during pressurized delivered air, which is raised to lifting position by closed control valve 26, so as to by funnel 13
Lower end opening portion 27 is hermetic closed.As a result, other than grinding and sweeping 14 part of material effuser, service tank 4 is in air-tight state.
In addition, make in the internal pressure of service tank 4 using via the air in secondary air line 23 pressurized delivered to service tank 4
It rises.The internal pressure of service tank 4 is controlled as pressure identical with the internal pressure of mixing unit 5 or above by adjuster 18.It crosses
Surplus compressed air is automatically discharged from residual voltage air bleeding valve 24.
Mixing unit 5 is connected with tornadotron 28.The downstream of the tornadotron 28 is formed with the connecting portion being connect with by processing tube P
29.Connecting portion 29 is formed with the shape gradually expanded by front end, with the corresponding various outer diameter rulers by processing tube P
It is very little.It is supplied by primary air piping 21 to the compressed air in mixing unit 5, to sweep comprising being equally supplied to grinding for mixing unit 5
The state of material rotates on one side around the central axis X of tornadotron 28, on one side towards downstream side high velocity stream in tornadotron 28
It is dynamic.Eddy flow A is to grind to sweep material delivery air.
In the present embodiment, by the way that mixing unit 5 is connect with tornadotron 28 with eccentric state, so as to which section be made to be in
Eddy flow A is generated in circular tornadotron 28.But the generation type of eddy flow is not limited to this, can also set makes compressed air
The rotating vane or guide plate of rotation.It sweeps material delivery air by making to grind on one side rotate while and pressurizeds delivered to by processing tube P
It is interior, material is swept with being collided by the inner surface of processing tube P so as to easily make to grind.Therefore, it is possible to effectively to by processing tube P's
Entire inner surface is implemented to grind the effect of sweeping everywhere.
In the present embodiment, the compressed air to mixing unit 5 is supplied all with air-tight state quilt from pressure conveyer device 6
Pressurized delivered is to by processing tube P.In addition, by suction device 7 from by the downstream P1 of processing tube P laterally by processing tube P
Apply negative pressure suction force.Therefore, even internal diameter is small or length length is not to only can by the negative pressure suction force of suction device 7
From ground by the upstream end P2 suckings of processing tube P the degree of sweeping material delivery air by processing tube P, can also make to grind that sweep material defeated
Stream of supplying gas is carried out at high speed flowing with more than flow velocity 80m/s, and processing is swept so as to be effectively performed to grind.It grinds and sweeps material conveying gas
The velocity in pipes of stream is for example preferably more than 100m/s, more preferably more than 120m/s.
In addition, in the present embodiment, due to grinding, to sweep material and air be to be sprayed with air-tight state from injection apparatus 3 to quilt
In processing tube P, therefore, it is more than and grinds from what is flowed out by processing tube P if flowing into and the amount of material delivery air being swept by grinding in processing tube P
The amount of material delivery air is swept, then device can be caused to be damaged.Therefore, suction device 7 is sucked and grinds the amount for sweeping material delivery air
Be set greater than 3 pressurized delivered of injection apparatus grinds the amount for sweeping material delivery air.
In addition, in the present embodiment, a system is set for being directed to single service tank 4 as simplest example
Mixing unit 5 and the situation of tornadotron 28 be described, still, as another example for improving treatment effeciency, can also be directed to single
One service tank 4 and the mixing unit 5 of multiple systems and tornadotron 28 are set.In the mixing unit 5 and tornadotron 28 for setting multiple systems
In the case of, set above-mentioned header tank 20 especially effective as the caisson for steadily supplying air for each system.
Then, the pipe inner face sand blasting system of the sand blasting unit 1 comprising above-mentioned pipe inner face is illustrated with reference to Fig. 3.This is
System aims to solve the problem that grinding for pipe inner face sweeps the effect of processing this problem is had differences between both ends P1, P2 by processing tube P.
That is, the degree of rotation for grinding the eddy flow A for sweeping material flowed in by processing tube P is stronger in upstream end P2 sides, but under
It swims end P1 and gradually weakens.Accordingly, there exist swept effect by grinding for the downstream P1 sides of processing tube P and reduced this problem.
In order to solve this problem, the pipe inner face sand blasting system 30 of present embodiment has two and forms and above-mentioned sand blasting unit
1 identical sand blasting unit.Moreover, two sand blasting units (input side sand blasting unit 1a and outlet side sand blasting unit 1b) are configured
To be acted on along by the input side of the pipeline of processing tube P and outlet side towards opposite direction.
As shown in figure 3, input side sand blasting unit 1a and outlet side sand blasting unit 1b are disposed in input side apparatus 31a and output
Between side apparatus 31b.Side apparatus 31a and output side apparatus 31b is inputted by being used as by the conveyer belt 32 of the pipeline of processing tube P
It is connected with each other.Input side sand blasting unit 1a is disposed in the input side along the conveyer belt, and outlet side sand blasting unit 1b is disposed in defeated
Go out side.
Input side sand blasting unit 1a has from the input side suction device for being attracted inner air tube by one end Pa of processing tube P
It 7a and is sprayed with air-tight state into pipe as eddy flow from by the other end Pb of processing tube P and grinds the input for sweeping material and air
Side spray injection device 3a.On the other hand, outlet side sand blasting unit 1b, which has from by the other end Pb of processing tube P, attracts inner air tube
Outlet side suction device 7b and sweep material from spraying to grind into pipe with air-tight state as eddy flow by one end Pa of processing tube P
With the outlet side injection apparatus 3b of air.The composition of input side suction device 7a and outlet side suction device 7b are filled with above-mentioned attraction
Put 7 composition it is identical.Similarly, the composition of input side injection apparatus 3a and outlet side injection apparatus 3b and above-mentioned injection apparatus 3
Composition it is identical.
Pipe inner face sand blasting system 30 according to the present embodiment, by processing tube P by conveyer belt 32 from input side apparatus 31a
Input side sand blasting unit 1a is supplied to, and passes through input side sand blasting unit 1a and implements to grind to sweep processing.Then, led to by processing tube P
It crosses conveyer belt 32 and is transported to outlet side sand blasting unit 1b, and pass through outlet side sand blasting unit 1b and be again carried out grinding and sweep processing.It grinds
That sweeps after treatment is transported to output side apparatus 31b by processing tube P by conveyer belt 32.
In input side sand blasting unit 1a, using input side suction device 7a out of, one end Pa suction tubes by processing tube P
Air, and sprayed by the use of input side injection apparatus 3a from by the other end Pb of processing tube P as eddy flow A with air-tight state into pipe
It penetrates to grind and sweeps material and air.Material and air are swept in pipe from being handled from applying to make to grind simultaneously by the both ends of processing tube P as a result,
The high forces that the other end Pb of pipe P is flowed to one end Pa.Therefore, even if only logical by small, the length length of the internal diameter of processing tube P etc.
Cross vacuum suction effect be difficult to make in a short time to grind the conveying for sweeping material effect reach entirely by processing tube P in the case of,
It will can effectively grind and sweep material and be delivered to entirely by processing tube P.
In outlet side sand blasting unit 1b, using outlet side suction device 7b from by the other end Pb suction tubes of processing tube P
Interior air, and sprayed by the use of outlet side injection apparatus 3b from by one end Pa of processing tube P as eddy flow A with air-tight state into pipe
It penetrates to grind and sweeps material and air.Material and air are swept in pipe from being handled from applying to make to grind simultaneously by the both ends of processing tube P as a result,
The high forces that one end Pa of pipe P is flowed to other end Pb.Therefore, even if only logical by small, the length length of the internal diameter of processing tube P etc.
Cross vacuum suction effect be difficult to make in a short time to grind the conveying for sweeping material effect reach entirely by processing tube P in the case of,
It will can effectively grind and sweep material and be delivered to entirely by processing tube P.
In the present embodiment, the action direction of attraction and injection is made (to grind the stream for sweeping material by processing tube P for one
Dynamic direction) it mutually overturns and implements to grind twice to sweep processing.Thereby, it is possible to make to sweep place by grinding for the eddy flow A between the both ends of processing tube P
Manage uniform in effect.Further, since input side sand blasting unit 1a and outlet side sand blasting unit 1b configurations are along by processing tube P's
The input side and outlet side of pipeline, therefore, implementation are ground when sweeping processing without reversion for the second time by processing tube P.Therefore, it is possible to light
Loose ground carries out operation, and treatment effeciency is also good.
And then in the example in figure 3, input side sand blasting unit 1a has positioned at by the other end Pb sides of processing tube P and use
The input side service tank 4a of material is swept in grinding of being supplied into pipe of storage and positioned at by one end Pa sides of processing tube P and for connecing
Receive the input side receiving magazine 9a that the grinding after out of by processing tube P sweeps material.It is located in addition, outlet side sand blasting unit 1b has
The outlet side service tank 4b of material is swept by one end Pa sides of processing tube P and for storing grinding of being supplied into pipe and positioned at being located
Manage the other end Pb sides of pipe P and for receiving the outlet side receiving magazine 9b that the grinding after out of by processing tube P sweeps material.And
And input side receiving magazine 9a and outlet side service tank 4b sweep material feeding channel 33 and are connected by grinding, so as to by defeated
Enter grinding in the receiving magazine 9a of side and sweep material to be delivered in outlet side service tank 4b.Similarly, outlet side receiving magazine 9b and input side
Service tank 4a by grind sweep material feeding channel 34 and be connected, so as to which it is defeated that grinding in outlet side receiving magazine 9b is swept material
It send to input side service tank 4a.
According to this constitution, material is swept by the grinding after sweeping of grinding of the inner surface of processing tube P in input side sand blasting unit 1a
Again in input outlet side sand blasting unit 1b, similarly, knot is swept by grinding for the inner surface of processing tube P in outlet side sand blasting unit 1b
Grinding after beam is swept material and is put into again in input side sand blasting unit 1a, and such iterative cycles utilize.Material is swept by repeatedly due to grinding
It recycles, thus it is very economical.
And then form outputs of the input side receiving magazine 9a of input side sand blasting unit 1a with forming outlet side sand blasting unit 1b
Side service tank 4b is respectively positioned on by one end Pa sides of processing tube P.In addition, form the outlet side receiving magazine 9b of outlet side sand blasting unit 1b
Input side service tank 4a with forming input side sand blasting unit 1a is respectively positioned on by the other end Pb sides of processing tube P.Therefore, input side
Grinding between receiving magazine 9a and outlet side service tank 4b is swept material feeding channel 33 and outlet side receiving magazine 9a and is supplied with input side
Grinding between case 4b sweep the length of material feeding channel 34 it is shorter also can, so as to grind the arranging for sweeping material feeding channel 33,34
Layout is also very simple.Therefore, the arranging cost ground and sweep material feeding channel 33,34 can be saved, so as to more economical.
Claims (7)
1. a kind of blasting method of pipe inner face, which is characterized in that
Air out of downstream suction tube by processing tube, and from the upstream end by processing tube with air-tight state into pipe
Pressurized delivered, which is ground, sweeps material and air.
2. the blasting method of pipe inner face as described in claim 1, which is characterized in that
Described as straight tube be by the size of processing tube：By substituting into concrete numerical value, and in L, D to P, γ, V in following formula
Any one substitute into concrete numerical value obtained from below D or more than L；
L/D=2P/ (0.02 × γ × V2)
Wherein, V is in more than 80m/s.
3. a kind of sand blasting unit of pipe inner face, which is characterized in that have：
Suction device, the air out of downstream suction tube by processing tube；With
Injection apparatus sprays to grind and sweeps material and air with air-tight state from the upstream end by processing tube into pipe.
4. the sand blasting unit of pipe inner face as claimed in claim 3, which is characterized in that
Described as straight tube be by the size of processing tube：By substituting into concrete numerical value, and in L, D to P, γ, V in following formula
Any one substitute into concrete numerical value obtained from below D or more than L；
L/D=2P/ (0.02 × γ × V2)
Wherein, V is in more than 80m/s.
5. the sand blasting unit of the pipe inner face as described in claim 3 or 4, which is characterized in that
The injection apparatus has：
Described grind is swept material and institute by mixing unit at compared to position of the upstream end by processing tube closer to upstream side
Air is stated to be mixed；
Closed service tank, be used to storing it is described grind to sweep material and grind to mixing unit supply sweep material；
Pressure conveyer device is used for into the mixing unit and pressurized delivered air in the service tank；And
Adjuster is used to control the internal pressure of the service tank, so that the internal pressure of the internal pressure of the service tank and the mixing unit
Internal pressure equal or more than the mixing unit.
6. a kind of pipe inner face sand blasting system, which is characterized in that
It is being equipped sand blasting unit respectively along by the input side of the pipeline of processing tube and outlet side,
The input side sand blasting unit for being disposed in input side has：
Input side suction device, the air out of described one end suction tube by processing tube；With
Input side injection apparatus, from it is described spray to grind into pipe with air-tight state as eddy flow by the other end of processing tube sweep
Material and air；
The outlet side sand blasting unit for being disposed in outlet side has：
Outlet side suction device, the air out of described the other end suction tube by processing tube；With
Outlet side injection apparatus is sprayed into pipe with air-tight state and ground as eddy flow by described one end of processing tube from described
Sweep material and air.
7. pipe inner face sand blasting system as claimed in claim 6, which is characterized in that
The input side sand blasting unit has：
Input side service tank is located at the another side by processing tube, and for storing to described by processing tube
Material is swept in grinding for supply；With
Input side receiving magazine is located at the one end by processing tube, and is led in processing tube for receiving from described
Material is swept in grinding later；
The outlet side sand blasting unit has：
Outlet side service tank is located at the one end by processing tube, and is supplied in processing tube to described for storing
Material is swept in grinding for giving；With
Outlet side receiving magazine is located at the another side by processing tube, and for receiving from described by processing tube
Grinding after sweeps material；
The input side receiving magazine is connected with the outlet side service tank, so as to by grinding in the input side receiving magazine
Material is swept to be delivered in the outlet side service tank；
The outlet side receiving magazine is connected with the input side service tank, so as to by grinding in the outlet side receiving magazine
Material is swept to be delivered in the input side service tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-236508 | 2016-12-06 | ||
| JP2016236508A JP7007087B2 (en) | 2016-12-06 | 2016-12-06 | Blasting method and equipment for the inner surface of the pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108145615A true CN108145615A (en) | 2018-06-12 |
Family
ID=62468016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711231792.3A Pending CN108145615A (en) | 2016-12-06 | 2017-11-30 | The blasting method and device of pipe inner face |
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| Country | Link |
|---|---|
| JP (1) | JP7007087B2 (en) |
| CN (1) | CN108145615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953981A (en) * | 2021-10-29 | 2022-01-21 | 山东工业陶瓷研究设计院有限公司 | Metal connecting ring pretreatment method and coarsening system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019209347A1 (en) * | 2019-06-27 | 2020-12-31 | Siemens Aktiengesellschaft | Device and method for cleaning the surfaces of the inside of pipes |
| JPWO2022009500A1 (en) * | 2020-07-10 | 2022-01-13 |
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| CN101511540A (en) * | 2006-09-01 | 2009-08-19 | 住友金属工业株式会社 | Steel pipe internal-surface blasting apparatus, method of blasting steel pipe internal-surface and process for manufacturing steel pipe excelling in internal-surface surface property |
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| CN113953981A (en) * | 2021-10-29 | 2022-01-21 | 山东工业陶瓷研究设计院有限公司 | Metal connecting ring pretreatment method and coarsening system |
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| Publication number | Publication date |
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| JP7007087B2 (en) | 2022-01-24 |
| JP2018089748A (en) | 2018-06-14 |
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Application publication date: 20180612 |