CN209440004U - For improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine - Google Patents

For improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine Download PDF

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Publication number
CN209440004U
CN209440004U CN201820436014.1U CN201820436014U CN209440004U CN 209440004 U CN209440004 U CN 209440004U CN 201820436014 U CN201820436014 U CN 201820436014U CN 209440004 U CN209440004 U CN 209440004U
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nozzle head
hole path
diameter
nozzle
nozzle body
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CN201820436014.1U
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段井玉
孔智勇
刘伯胜
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Shandong Donghong Pipe Industry Co Ltd
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Shandong Donghong Pipe Industry Co Ltd
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Abstract

The utility model relates to one kind for improving derusting by sandblasting quality spray gun, mutually it is abutted against with nut one end of nozzle head, the other end of nozzle head and nozzle body plug connection, nozzle body is provided in the nozzle body through through-hole, the nozzle body includes the oblique spliced eye being from left to right sequentially communicated through through-hole, horizontal hole path, it is primary to accelerate necking down hole path and spray boom interface channel, the primary miner diameter end for accelerating necking down hole path is connected to horizontal hole path, the primary major diameter section for accelerating necking down hole path is connected to spray boom interface channel, one end of nozzle head is plugged in oblique spliced eye, the center line of the center line of nozzle head injection channel and horizontal hole path intersects and angle between the two is 10 ° -22.5 °.A kind of caliber pipe inwall derusting sand-blasting machine is also disclosed in the utility model.The utility model has the following beneficial effects: 1, discharging is concentrated, and injection resistance is small, and the inadequate phenomenon of depth of abrasion pattern is addressed.2, nozzle jet face is entirely without dead angle.

Description

For improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine
Technical field
The utility model relates to one kind for improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine, Belong to steel pipe derusting technical field.
Background technique
Currently, caliber pipe inwall derusting uses blasting craft, spray gun four side for the right and left discharging or up and down Discharging structure, i.e., in spray gun both sides or the fluting discharging of four sides.Such structure type has the disadvantage in that 1, spray angle and spray boom Centerlines be 90 degree, system resistance is big, and derusting effect is poor, generally during steel pipe inner wall derusting by sandblasting, spray gun It carries out primary retreat and completes derusting, there are helixes or derusting to be not thorough phenomenon for inner wall after derusting, causes steel pipe inner wall local Surface cleanness is poor, depth of abrasion pattern is inadequate.
At present for derusting by sandblasting technique, some producers take multi-injection or received form of giving way is processed.It is logical The mode of multi-injection is crossed, sandblasting effect can be made to reach requirement, but in descaling process, the electricity charge, abrasive material take and labour cost Investment is too big, and production efficiency seriously reduces, and increases production and processing overall cost, restricts manufacturing schedule.Take concession received, Since surface cleanness is poor, depth of abrasion pattern is inadequate, subsequent anticorrosive quality is influenced.Therefore how both reduce production and processing it is comprehensive at This is solved do not impact anticorrosive quality again in the case where because surface cleanness is poor caused by equipment and operational characteristic, anchor line depth Spending inadequate problem is current improvement derusting by sandblasting quality method the most effective.
Utility model content
According to the above-mentioned deficiencies in the prior art, technical problem to be solved by the utility model is: providing a kind of for changing Kind derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine, discharging is concentrated, and injection resistance is small, and depth of abrasion pattern is not Enough phenomenons are addressed;Nozzle jet face is entirely without dead angle, and spray gun carries out primary retreat and completes derusting, and steel pipe inner wall cleannes are Standard requirements can be met, without spraying repeatedly, production overall cost is reduced.
It is described in the utility model to be used to improve derusting by sandblasting quality spray gun, including nozzle body, nozzle head and nut, it sprays Mouth main body is detachably arranged on spray boom, and the other end of nozzle body is removably connected with nut, and nut is by nozzle head, spray The connection locking of mouth main body, one end of nozzle head are mutually abutted against with nut, and the other end of nozzle head and nozzle body plug connection are described Nozzle body is provided in nozzle body through through-hole, the nozzle body through through-hole include from left to right be sequentially communicated it is oblique Spliced eye, horizontal hole path, primary acceleration necking down hole path and spray boom interface channel, the primary miner diameter end for accelerating necking down hole path It is connected to horizontal hole path, the primary major diameter section for accelerating necking down hole path is connected to spray boom interface channel, and one end of nozzle head is inserted It connects in oblique spliced eye, the center line of the center line of nozzle head injection channel and horizontal hole path intersects and angle between the two It is 10 ° -22.5 °, injection channel is provided in the nozzle head, the injection channel includes the leading portion being from left to right sequentially communicated Injection channel and secondary acceleration necking down hole path, the secondary miner diameter end for accelerating necking down hole path are connected with leading portion injection channel, The secondary major diameter section for accelerating necking down hole path is connected with horizontal hole path, and the junction of oblique spliced eye and horizontal hole path has The right end of limiting stand, nozzle head is mutually abutted against with limiting stand, and the nozzle head is made of boron carbide material.
The nut includes shell, be provided in shell the injection being from left to right sequentially communicated portal, nozzle head limit hole With tool internal thread connecting screw hole, the end of nozzle body is provided with the external screw thread matched with connecting screw hole, and nut passes through Screw thread is detachably connected with nozzle body, and the diameter of the shell is greater than the diameter of leading portion injection channel, sprays the diameter to portal Less than the outer diameter of nozzle head, the internal diameter of nozzle head limit hole is equal with the internal diameter of oblique spliced eye, and the center of nozzle head limit hole The center line of line and oblique spliced eye coincides.
The nozzle body and nut are made of 40Cr stainless steel high-strength material.
The center line of the leading portion injection channel and the secondary center line for accelerating necking down hole path are overlapped, leading portion injection channel Diameter it is equal with the secondary acceleration diameter of necking down hole path miner diameter end.
The center line of the oblique spliced eye and the center line of horizontal hole path intersect and angle between the two be 10 °- 22.5 °, the center line weight of the center line of horizontal hole path and the primary center line for accelerating necking down hole path, spray boom interface channel It closes, the diameter of horizontal hole path accelerates the diameter of necking down hole path miner diameter end equal with primary, and the diameter of spray boom interface channel is big In the diameter for once accelerating necking down hole path major diameter section.
The nozzle head is connect with the mode that nozzle body is adopted as interference fit or transition fit.
The both ends of the nozzle head offer seal groove, and a sealing ring is mounted in each seal groove, point It is not the first sealing ring and the second sealing ring, the first sealing ring is pressed between nut and nozzle head, and the second sealing ring is pressed on Between nozzle head and limiting stand.
The connecting pin of the nozzle body and spray boom is provided with external screw thread, and nozzle body is detachably connected by screw thread with spray boom It connects.
A kind of caliber pipe inwall derusting sand-blasting machine is also disclosed in the utility model, including one or more for improving spray Sand derusting spray gun, it is described for improving derusting by sandblasting quality spray gun to be above-mentioned for improving derusting by sandblasting quality spray gun.
Working principle of the utility model is: the utility model is connect with spray boom, a spray boom only connects a spray gun, and sprays Only one injection of rifle is portalled, and spray gun is placed in steel pipe to be derusted by when derusting, and spray gun at the uniform velocity enters the inner wall of steel pipe, simultaneously Sandblasting operation is carried out, steel pipe is rotating at this time, nozzle material is adjusted to wear-resisting high-strength degree boron carbide material, 10 ° of θ angular region~ 22.5 °, it is ensured that nozzle increases service life under the premise of improving sandblasting quality, improves sandblasting efficiency.Furthermore nozzle head Carrying out locking by nut may be implemented freely to replace disassembly, improve the utilization rate of nozzle;When diameter of steel tube to be derusted compared with When big, two groups of spray guns can be used, two groups of spray guns cooperate two sets of jet pipes to use.
Compared with prior art, the utility model has the following beneficial effects: 1, it is described in the utility model for improving Derusting by sandblasting quality spray gun, discharging are concentrated, and injection resistance is small, and the inadequate phenomenon of depth of abrasion pattern is addressed.2, nozzle jet face Entirely without dead angle, spray gun carries out primary retreat and completes derusting, and steel pipe inner wall cleannes can meet standard requirements, without spraying repeatedly It penetrates, production overall cost is reduced.3, solve steel pipe inner wall local surfaces cleannes are poor, depth of abrasion pattern not enough influence it is subsequent Anticorrosive quality, and the problem of multi-injection synthesis high production cost.4, nozzle material is adjusted to wear-resisting high-strength degree boron carbide material Material, 10 °~22.5 ° of θ angular region, it is ensured that nozzle increases service life under the premise of improving sandblasting quality, improves sandblasting Efficiency.5, furthermore nozzle head by nut carry out locking may be implemented freely to replace disassembly, improve the utilization rate of nozzle.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the force analysis figure of the utility model.
In figure: 1, nozzle body 1.1, oblique spliced eye 1.2, horizontal hole path 1.3, primary acceleration necking down hole path 1.4, spray boom interface channel 1.5, limiting stand 2, nozzle head 2.1, leading portion injection channel 2.2, secondary acceleration necking down hole path 3, nut 3.1, shell 3.2, injection are portalled 3.3, nozzle head limit hole 3.4, connecting screw hole.
Specific embodiment
The utility model is described further with reference to the accompanying drawing:
Below by way of specific embodiment, the utility model is described in further detail, but not to limit the utility model, all Within spirit of that invention and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model Within protection scope.
Embodiment one
As shown in Figure 1, it is described for improving derusting by sandblasting quality spray gun, including nozzle body 1, nozzle head 2 and nut 3, Nozzle body 1 is detachably arranged on spray boom, and the other end of nozzle body 1 is removably connected with nut 3, and nut 3 will spray Mouth 2, the connection locking of nozzle body 1, one end and 3 phase of nut of nozzle head 2 are abutted against, the other end and nozzle body 1 of nozzle head 2 Plug connection, nozzle body is provided in the nozzle body 1 through through-hole, the nozzle body through through-hole include from a left side to Oblique spliced eye 1.1, horizontal hole path 1.2, primary acceleration necking down hole path 1.3 and the spray boom interface channel 1.4 that the right side is sequentially communicated, The primary miner diameter end for accelerating necking down hole path 1.3 is connected to horizontal hole path 1.2, the primary major diameter for accelerating necking down hole path 1.3 Section is connected to spray boom interface channel 1.4, and one end of nozzle head 2 is plugged in oblique spliced eye 1.1, in 2 injection channel of nozzle head The center line of heart line and horizontal hole path 1.2 intersects and angle between the two is 10 ° -22.5 °, setting in the nozzle head 2 There is injection channel, the injection channel includes the leading portion injection channel 2.1 being from left to right sequentially communicated and secondary acceleration necking down hole Channel 2.2, the secondary miner diameter end for accelerating necking down hole path 2.2 are connected with leading portion injection channel 2.1, and secondary acceleration necking down hole is logical The major diameter section in road 2.2 is connected with horizontal hole path 1.2, and the junction of oblique spliced eye 1.1 and horizontal hole path 1.2 has limit Platform 1.5, right end and 1.5 phase of limiting stand of nozzle head 2 are abutted against, and the nozzle head 2 is made of boron carbide material.
In the present embodiment, the nut 3 includes shell 3.1, is provided with the injection being from left to right sequentially communicated in shell 3.1 Portal 3.2, nozzle head limit hole 3.3 and tool internal thread connecting screw hole 3.4, and the end of nozzle body 1 is provided with and connects The external screw thread that screw hole 3.4 matches, nut 3 are detachably connected by screw thread with nozzle body 1, and the diameter of the shell 3.1 is big In the diameter of leading portion injection channel 2.1, portal 3.2 diameter of injection is less than the outer diameter of nozzle head 2, nozzle head limit hole 3.3 Internal diameter is equal with the internal diameter of oblique spliced eye 1.1, and the center line phase of the center line of nozzle head limit hole 3.3 and oblique spliced eye 1.1 It is overlapped;The nozzle body 1 and nut 3 are made of 40Cr stainless steel high-strength material;The center of the leading portion injection channel 2.1 Line and the secondary center line for accelerating necking down hole path 2.2 are overlapped, and the diameter of leading portion injection channel 2.1 and secondary acceleration necking down hole are logical The diameter of 2.2 miner diameter end of road is equal;The center line of the center line of the oblique spliced eye 1.1 and horizontal hole path 1.2 intersects and two Angle between person is 10 ° -22.5 °, the center line of the center line of horizontal hole path 1.2 and primary acceleration necking down hole path 1.3, The center line of spray boom interface channel 1.4 is overlapped, the diameter of horizontal hole path 1.2 and primary acceleration 1.3 miner diameter end of necking down hole path Diameter it is equal, the diameter of spray boom interface channel 1.4 is greater than the primary diameter for accelerating 1.3 major diameter section of necking down hole path;The spray Mouth 2 is connect with the mode that nozzle body 1 is adopted as interference fit or transition fit;The both ends of the nozzle head 2 offer Seal groove is mounted on a sealing ring in each seal groove, is the first sealing ring and the second sealing ring respectively, first is close Seal is pressed between nut 3 and nozzle head 2, and the second sealing ring is pressed between nozzle head 2 and limiting stand 1.5;The nozzle The connecting pin of main body 1 and spray boom is provided with external screw thread, and nozzle body 1 is detachably connected by screw thread and spray boom.
The caliber pipe inwall derusting sand-blasting machine, including it is one or more for improving derusting by sandblasting quality spray gun, It is described to be used to improve derusting by sandblasting quality spray gun for above-mentioned for improving derusting by sandblasting quality spray gun.
Embodiment two
As shown in Fig. 2, F is major skock power of the steel sand in nozzle body in operational process;
F1 is the vertical impact forces generated to nozzle head:
F2 is steel sand running force in nozzle head;
F3 is that steel sand leaves the running force after nozzle head;
F4 is that steel sand leaves impact force after nozzle head vertically downward;
From upper figure:
1) steel sand can generate the vertical impact forces F1 to nozzle head when entering nozzle head by nozzle body, and along nozzle head The power F2 to run parallel;
Wherein F1=F × sin θ
F2=F×cosθ
2) steel sand can generate level run power F3 and vertical force F4 when being left by nozzle head;
Wherein F4=F2 × sin θ
F3=F2×cosθ
The power that steel sand finally generates derusting only has F3 and F4: F3=Fcos2 θ known to 1) 2)
F4= Fsin²θ;
Therefore final derusting effect is only related with the angle θ;F1 can become larger if the angle θ is excessive, bigger to the impact of nozzle head Nozzle life can be shortened;F4 can become smaller if the angle θ is too small, and standard requirements rust cleaning efficiency is not achieved in the steel pipe depth of abrasion pattern after derusting It reduces;Nozzle material is adjusted to wear-resisting high-strength degree boron carbide material, 10 °~22.5 ° of θ angular region, it is ensured that nozzle is mentioning Under the premise of high sandblasting quality, increase service life, improves sandblasting efficiency.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.This The technical staff of industry is retouched in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments That states merely illustrates the principles of the invention, and on the premise of not departing from the spirit and scope of the utility model, the utility model can also There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted Protection scope is asked to be defined by the appending claims and its equivalent thereof.

Claims (8)

1. one kind is for improving derusting by sandblasting quality spray gun, it is characterised in that: including nozzle body (1), nozzle head (2) and nut (3), nozzle body (1) is detachably arranged on spray boom, and the other end of nozzle body (1) is removably connected with nut (3), Nozzle head (2), nozzle body (1) connection locking, one end and the nut (3) of nozzle head (2) are mutually abutted against by nut (3), nozzle head (2) the other end and nozzle body (1) plug connection, the interior nozzle body that is provided with of the nozzle body (1) are described through through-hole Nozzle body includes the oblique spliced eye (1.1) being from left to right sequentially communicated, horizontal hole path (1.2), primary acceleration through through-hole Necking down hole path (1.3) and spray boom interface channel (1.4), the primary miner diameter end for accelerating necking down hole path (1.3) and lateral aperture are logical Road (1.2) connection, the primary major diameter section for accelerating necking down hole path (1.3) are connected to spray boom interface channel (1.4), nozzle head (2) One end be plugged in oblique spliced eye (1.1), the center line of nozzle head (2) injection channel and the center of horizontal hole path (1.2) Line intersects and angle between the two is 10 ° -22.5 °, is provided with injection channel, the injection channel in the nozzle head (2) Including the leading portion injection channel (2.1) being from left to right sequentially communicated and secondary acceleration necking down hole path (2.2), secondary acceleration necking down The miner diameter end of hole path (2.2) is connected with leading portion injection channel (2.1), the secondary major diameter section for accelerating necking down hole path (2.2) It is connected with horizontal hole path (1.2), the junction of oblique spliced eye (1.1) and horizontal hole path (1.2) has limiting stand (1.5), the right end of nozzle head (2) is mutually abutted against with limiting stand (1.5), and the nozzle head (2) is made of boron carbide material;The spray The connecting pin of mouth main body (1) and spray boom is provided with external screw thread, and nozzle body (1) is detachably connected by screw thread and spray boom.
2. according to claim 1 for improving derusting by sandblasting quality spray gun, it is characterised in that: the nut (3) includes Shell (3.1), be provided in shell (3.1) injection being from left to right sequentially communicated portal (3.2), nozzle head limit hole (3.3) With tool internal thread connecting screw hole (3.4), the end of nozzle body (1) be provided with matched with connecting screw hole (3.4) outside Screw thread, nut (3) are detachably connected by screw thread with nozzle body (1), and it is logical that the diameter of the shell (3.1) is greater than leading portion injection The diameter in road (2.1), injection portal (3.2) diameter be less than nozzle head (2) outer diameter, the internal diameter of nozzle head limit hole (3.3) It is equal with the internal diameter of oblique spliced eye (1.1), and the center line of the center line of nozzle head limit hole (3.3) and oblique spliced eye (1.1) It coincides.
3. according to claim 2 for improving derusting by sandblasting quality spray gun, it is characterised in that: the nozzle body (1) It is made with nut (3) of 40Cr stainless steel high-strength material.
4. according to claim 3 for improving derusting by sandblasting quality spray gun, it is characterised in that: the leading portion injection channel (2.1) center line and the secondary center line for accelerating necking down hole path (2.2) are overlapped, the diameter of leading portion injection channel (2.1) with The secondary diameter for accelerating necking down hole path (2.2) miner diameter end is equal.
5. according to claim 4 for improving derusting by sandblasting quality spray gun, it is characterised in that: the oblique spliced eye (1.1) center line of center line and horizontal hole path (1.2) intersects and angle between the two is 10 ° -22.5 °, lateral aperture The center line of the center line in channel (1.2) and the primary center line for accelerating necking down hole path (1.3), spray boom interface channel (1.4) It is overlapped, the diameter of horizontal hole path (1.2) accelerates the diameter of necking down hole path (1.3) miner diameter end equal with primary, spray boom connection The diameter in channel (1.4) is greater than the primary diameter for accelerating necking down hole path (1.3) major diameter section.
6. according to claim 5 for improving derusting by sandblasting quality spray gun, it is characterised in that: the nozzle head (2) with Nozzle body (1) is adopted as interference fit or the mode of transition fit connects.
7. according to claim 6 for improving derusting by sandblasting quality spray gun, it is characterised in that: the nozzle head (2) Both ends offer seal groove, and a sealing ring is mounted in each seal groove, are the first sealing ring and second respectively Sealing ring, the first sealing ring are pressed between nut (3) and nozzle head (2), and the second sealing ring is pressed on nozzle head (2) and limit Between platform (1.5).
The sand-blasting machine 8. a kind of caliber pipe inwall derusts, it is characterised in that: including one or more for improving derusting by sandblasting Quality spray gun, it is described to be removed for claim 1-7 is described in any item for improving sandblasting for improving derusting by sandblasting quality spray gun Become rusty quality spray gun.
CN201820436014.1U 2018-03-29 2018-03-29 For improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine Active CN209440004U (en)

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CN201820436014.1U CN209440004U (en) 2018-03-29 2018-03-29 For improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine

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Application Number Priority Date Filing Date Title
CN201820436014.1U CN209440004U (en) 2018-03-29 2018-03-29 For improving derusting by sandblasting quality spray gun and caliber pipe inwall derusting sand-blasting machine

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CN209440004U true CN209440004U (en) 2019-09-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114800288A (en) * 2022-04-25 2022-07-29 中国航发成都发动机有限公司 Shot blasting device for blisk of high-pressure compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114800288A (en) * 2022-04-25 2022-07-29 中国航发成都发动机有限公司 Shot blasting device for blisk of high-pressure compressor

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