CN112756353B - Dust collector of solid rocket engine shell internal surface - Google Patents
Dust collector of solid rocket engine shell internal surface Download PDFInfo
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- CN112756353B CN112756353B CN202011408575.9A CN202011408575A CN112756353B CN 112756353 B CN112756353 B CN 112756353B CN 202011408575 A CN202011408575 A CN 202011408575A CN 112756353 B CN112756353 B CN 112756353B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0813—Cleaning containers having tubular shape, e.g. casks, barrels, drums by the force of jets or sprays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a dust removing device for the inner surface of a solid rocket engine shell, which comprises: the air blowing device comprises an air blowing pipeline, an air suction pipeline and a branch pipeline, wherein the air suction pipeline is connected with the air blowing pipeline in a nested manner, the air suction pipeline is arranged on the inner side of the air blowing pipeline, and the air blowing pipeline and the air suction pipeline are both connected with the branch pipeline; the air blowing pipeline is connected with a blower through a large pipe on the branch pipeline, and the air suction pipeline is connected with a suction fan through a small pipe on the branch pipeline; after entering an operating state, delivering an airflow by the blower through the blower duct to the solid rocket engine to blow up dust particles located on an inner surface of a casing of the solid rocket engine; the dust particles are absorbed by the air suction pipeline, and the dust particles are brought into the dirt collecting device by the suction fan through the air suction pipeline. The invention enhances the dust removal effect, and has higher dust collection efficiency and lower energy consumption.
Description
Technical Field
The invention relates to the technical field of dust removal, in particular to a dust removal device for the inner surface of a shell of a solid rocket engine.
Background
The housing of a solid rocket engine, which is a power source of a large-scale carrier rocket, inevitably leaves surplus in the manufacturing process. A special lining layer forming process is adopted in the production of the solid rocket engine, the surface condition of the inner wall of the solid rocket engine needs to be detected before processing, and the solid rocket engine is removed under the condition of finding excess substances, so that the subsequent procedures can be ensured to be carried out smoothly. The main excess is dust and other small particles.
At present, the removal of the excess is mainly based on manpower, which relatively lags behind the progress of modern development. And the cost for removing the excess materials by manpower is higher, and the removal efficiency is lower. Therefore, it is necessary to develop and design a dust removal device for the inner surface of the shell of the solid rocket engine, and to avoid manual dust removal.
Disclosure of Invention
The technical problem solved by the invention is as follows: overcomes the defects of the prior art and provides a dust removal device for the inner surface of a solid rocket engine.
In order to solve the technical problem, an embodiment of the present invention provides a dust removing device for an inner surface of a casing of a solid rocket engine, the dust removing device including: a blowing pipeline, a suction pipeline and a branch pipeline, wherein,
the air suction pipeline is connected with the air blowing pipeline in a nested manner, and the air suction pipeline is arranged on the inner side of the air blowing pipeline;
therefore, the air blowing pipeline and the air suction pipeline are both connected with the branch pipeline;
the air blowing pipeline is connected with an air blower through a large pipe on the branch pipeline, and the air suction pipeline is connected with an air suction machine through a small pipe on the branch pipeline;
after entering an operating state, delivering an air flow by the blower through the blower duct to the solid rocket engine to blow up dust particles located on an inner surface of a casing of the solid rocket engine; the dust particles are absorbed by the air suction pipeline, and the dust particles are brought into the dirt collecting device by the suction fan through the air suction pipeline.
Optionally, the blowing pipe comprises a first 90 ° bent pipe and a first straight pipe, and the first 90 ° bent pipe and the first straight pipe, and the first straight pipe are connected through a front pipe hoop and a rear pipe hoop;
the air suction pipeline comprises a second 90-degree bent pipe, a second straight pipe and a rubber pipe;
the branch pipeline comprises a large pipe, a small pipe front section, a small pipe rear end fixing plate, a reducing joint, a rubber pipe and a clamp.
Optionally, the front pipe hoop is hermetically welded with the first 90-degree bent pipe and the rear end face of the first straight pipe;
the rear pipe hoop is hermetically welded with the front end faces of the first straight pipe and the large pipe;
the one end of preceding ferrule is provided with the external screw thread, the one end of back ferrule is provided with the internal thread, preceding ferrule with back ferrule passes through threaded connection, preceding ferrule with when the screw thread of back ferrule is complete revolve, the outside terminal surface of preceding ferrule is apart from the distance of back ferrule medial surface is less than 4 mm.
Optionally, a rubber sealing ring is installed on the inner side of the rear pipe hoop, the thickness of the rubber sealing ring is larger than 4mm, and the outer diameter of the rubber sealing ring is equal to the inner diameter width of the rear pipe hoop.
Optionally, circular holes are reserved in the middle of the front pipe clamp and the middle of the rear pipe clamp, four fan-shaped holes are reserved in the outer ring of the circular holes, and the circular holes and the fan-shaped holes of the front pipe clamp and the rear pipe clamp are equal in size.
Optionally, the second 90 return bends the external diameter of second straight tube be less than first 90 return bends with the internal diameter of first straight tube, second 90 return bends with the external diameter of the anterior segment pipeline of second straight tube equals the front ferrule with the diameter of back ferrule middle part round hole, the internal diameter of back segment pipeline is greater than the external diameter of front end pipeline, the external diameter of back segment pipeline is greater than the front ferrule with the diameter of back ferrule's middle part round hole, second 90 return bends with the second straight tube passes through the bulge location of back segment pipeline, the anterior segment pipeline passes the front ferrule with behind the back ferrule's the middle part round hole through the welding with the front ferrule with back ferrule fixed connection.
Optionally, the rear-section pipe length of the second 90 ° elbow pipe and the second straight pipe is greater than the screwing length of the front pipe hoop and the rear pipe hoop.
Optionally, a rectangular hole is formed in a side surface of a large pipe of the branch pipeline, the outer diameter and the inner diameter of the large pipe are respectively the same as those of the first straight pipe, a rear section of a small pipe of the branch pipeline is a 90-degree bent pipe, a flange is arranged at one end of the rear section of the small pipe, and the inner diameter and the outer diameter of the rear section of the small pipe are respectively the same as those of a front section of the straight pipe;
the small pipe rear section fixing plate of the branch pipeline is just attached to the large pipe and can cover a rectangular hole in the side face of the large pipe, a round hole is reserved in the middle of the small pipe rear section fixing plate of the branch pipeline, the diameter of the round hole is equal to the outer diameter of the small pipe rear section, the round hole is positioned through a flange of the small pipe rear section, and the small pipe rear section penetrates through the round hole of the small pipe rear section fixing plate and is fixedly connected with the rear end fixing plate through air-tight welding;
the rear pipe hoop is welded at the front end of the large pipe, a rubber sealing ring is installed on the inner side of the rear pipe hoop, the front part of the small pipe is fixed on the rear pipe hoop in a welding mode, the outer diameter and the inner diameter of the front part of the small pipe are the same as those of the front-section pipeline of the second straight pipe, and the outer diameter and the inner diameter of the rear part of the front part of the small pipe are the same as those of the rear-section pipeline of the second straight pipe.
Optionally, the width of the rectangular hole on the side surface of the large tube is larger than the outer diameter of the rear small tube section, the length of the rectangular hole is just long enough to accommodate the rear small tube section and the rear small tube section fixing plate after being welded, the rear small tube section fixing plate is inserted into the rear part of the front small tube section, the rear small tube section fixing plate is attached to the rectangular hole and covers the rectangular hole on the side surface of the large tube, and the rear small tube section fixing plate and the large tube are welded in an airtight mode when the rear small tube section is inserted into the rear small tube section.
Optionally, the inner diameter and the outer diameter of the large pipe end of the reducing joint are the same as those of the large pipe, and the front end face of the reducing joint is attached to the rear end face of the large pipe and is welded in an airtight manner;
the inner diameter of the second rubber pipeline is the same as the outer diameter of one side of the small pipe of the reducing joint, the first rubber pipeline is just sleeved on one side of the small pipe of the reducing joint, the hoop is connected to the sleeved position after the first rubber pipeline is sleeved on one side of the small pipe of the reducing joint, and the first rubber pipeline is prevented from falling off the reducing joint by tightening the bolt on the hoop.
Optionally, the first 90 ° elbow, the first straight pipe, the front small pipe section and the rear small pipe section are provided with one second rubber pipe inside, the outer diameter of the second rubber pipe is smaller than the inner diameter of the air suction pipe, and one end face of the second rubber pipe is provided with a flange, and the outer diameter of the flange is larger than the inner diameter of the second 90 ° elbow.
Compared with the prior art, the invention has the advantages that:
according to the dust removal device for the inner surface of the solid rocket engine shell, dust particles are blown up through the blowing pipeline and then sucked through the suction pipeline, the dust removal effect is enhanced, and compared with a pure sweeping type dust removal device, the dust removal device is higher in dust removal efficiency and lower in energy consumption. And the blowing pipeline and the air suction pipeline are connected in a nested manner, the air suction pipeline is arranged in the blowing pipeline, the air curtain sealing can be realized by the blowing pipeline, and the problem of secondary diffusion of dust particles in the dust removal process is solved. Additionally, the air tightness of the air suction pipeline is ensured by the rubber pipeline, and if the air tightness of the air suction pipeline is in problem, the maintenance and the replacement are easy and the cost is low.
Drawings
FIG. 1 is a schematic structural diagram of a dust removing device for an inner surface of a casing of a solid rocket engine according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another dust removing device for the inner surface of the casing of the solid rocket engine provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a front pipe clamp and a rear pipe clamp according to an embodiment of the present invention;
FIG. 4 is a schematic view of a front pipe clamp and a rear pipe clamp coupled according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a branch pipe according to an embodiment of the present invention;
description of reference numerals:
1: a first 90 ° bend; 2: a front pipe clamp; 3: a rear pipe hoop; 4: a first straight pipe; 5: a second straight pipe; 6: a front segment of the tubule; 7: a rear small tube section; 8: a large pipe; 9: a reducing joint; 10: a first rubber pipe; 11: clamping a hoop; 12: a second rubber pipe; 13: fixing the rear section of the tubule; 14: a second 90 ° bend; 15: a rubber sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a dust removing apparatus for an inner surface of a casing of a solid rocket engine according to an embodiment of the present invention is shown, and as shown in fig. 1, the dust removing apparatus 100 may include: a blowing duct 110, a suction duct 120, and a branching duct 130, wherein,
the air suction pipe 120 can be nested with the air blowing pipe 110, and the air suction pipe 120 is arranged at the inner side of the air blowing pipe 110;
the blowing pipeline 110 and the suction pipeline 120 are both connected with the branch pipeline 130;
the blowing pipeline 110 is connected with a blower through a large pipe on the branch pipeline 130, and the suction pipeline 120 is connected with a suction fan through a small pipe on the branch pipeline 130;
after entering the operating state, delivering an air flow by a blower through the blower duct 110 to the solid rocket motor to blow up dust particles located on the inner surface of the casing of the solid rocket motor; the dust particles are absorbed by the air suction pipeline 120, and are brought into the dirt collecting device by the suction fan through the air suction pipeline 120.
According to the dust removal device for the inner surface of the solid rocket engine shell, dust particles are blown up through the blowing pipeline and then sucked through the suction pipeline, the dust removal effect is enhanced, and compared with a pure sweeping type dust removal device, the dust removal device is higher in dust removal efficiency and lower in energy consumption. In the invention, the blowing pipe and the air suction pipe are connected in a nested manner, the air suction pipe is arranged in the blowing pipe, the air curtain sealing can be realized by the blowing pipe, and the problem of secondary diffusion of dust particles in the dust removal process is solved.
Next, the structure of the dust removing device of the embodiment of the present invention will be described in detail below with reference to fig. 2 to 5.
In a specific implementation manner of the embodiment of the present invention, the blowing duct 110 may include a first 90 ° bent pipe 1 and a first straight pipe 4, and the first 90 ° bent pipe 1 and the first straight pipe 4, and the first straight pipe 4 are connected by a front pipe hoop 2 and a rear pipe hoop 3;
the air suction pipe 120 may include a second 90 ° bent pipe 14, a second straight pipe 5, and a second rubber pipe 12;
the branch pipeline 130 comprises a large pipe 8, a small pipe front section 6, a small pipe rear section 7, a small pipe rear end fixing plate 13, a reducing joint 9, a first rubber pipeline 10 and a clamp 11.
In another specific implementation manner of the embodiment of the present invention, the front pipe hoop 2 is hermetically welded to the rear end surfaces of the first 90 ° elbow 1 and the first straight pipe 4.
The front end surfaces of the rear pipe hoop 3, the first straight pipe 4 and the large pipe 8 are welded in an airtight mode.
In the embodiment of the invention, the air tightness of the pipeline can be improved by adopting an air tightness welding mode, and the dust removal efficiency can be improved.
The one end of preceding ferrule 2 is provided with the external screw thread, and the one end of back ferrule 3 is provided with the internal thread, and preceding ferrule 2 can pass through threaded connection with back ferrule 3, and when preceding ferrule 2 was completely rotatory with the screw thread of back ferrule 3, the distance of the outside terminal surface of preceding ferrule 2 from 3 medial surface of back ferrule was less than 4 mm.
In another specific implementation manner of the embodiment of the present invention, a rubber sealing ring is installed on the inner side of the rear pipe clamp 3, the thickness of the rubber sealing ring 15 is greater than 4mm, and the outer diameter of the rubber sealing ring 15 is equal to the inner diameter width of the rear pipe clamp 3.
In another specific implementation manner of the embodiment of the present invention, circular holes may be left in the middle of the front pipe clamp 2 and the middle of the rear pipe clamp 3, four fan-shaped holes are left in the outer ring of the circular holes, and the size of the circular holes and the size of the fan-shaped holes of the front pipe clamp 2 and the rear pipe clamp 3 may be equal.
In another specific implementation manner of the embodiment of the present invention, the outer diameters of the second 90 ° elbow 14 and the second straight pipe 5 are smaller than the inner diameter of the first 90 ° elbow 1 and the first straight pipe 4, the outer diameters of the front-section pipes of the second 90 ° elbow 14 and the second straight pipe 5 are equal to the diameters of the middle circular holes of the front pipe hoop 2 and the rear pipe hoop 3, the inner diameter of the rear-section pipe is larger than the outer diameter of the front-end pipe, the outer diameter of the rear-section pipe is larger than the diameters of the middle circular holes of the front pipe hoop 2 and the rear pipe hoop 3, the second 90 ° elbow 14 and the second straight pipe 5 are positioned by the protruding portion of the rear-section pipe, and the front-section pipe penetrates through the middle circular holes of the front pipe hoop 2 and the rear pipe hoop 3 and then is fixedly connected with the front pipe hoop 2 and the rear pipe hoop 3 by welding.
In another specific implementation manner of the embodiment of the present invention, the rear-section pipeline length of the second 90 ° bent pipe 14 and the second straight pipe 5 is greater than the screwing length of the front pipe clamp 2 and the rear pipe clamp 3.
In another specific implementation manner of the embodiment of the present invention, a rectangular hole is disposed on a side surface of the large pipe 8 of the branch pipe 130, an outer diameter and an inner diameter of the large pipe 8 are respectively the same as an outer diameter and an inner diameter of the first straight pipe 4, the small pipe rear section 7 of the branch pipe 130 is a 90 ° bent pipe, and one end of the small pipe rear section 7 is provided with a flange, and the inner diameter and the outer diameter of the small pipe rear section 7 are respectively the same as an inner diameter and an outer diameter of the front section of the straight pipe.
The small pipe rear section fixing plate 13 of the branch pipeline 130 is just attached to the large pipe and can cover a rectangular hole on the side face of the large pipe, a round hole is reserved in the middle of the small pipe rear section fixing plate 13 of the branch pipeline, the diameter of the round hole is equal to the outer diameter of the small pipe rear section 7, the small pipe rear section 7 is positioned through a flange of the small pipe rear section 7, and after penetrating through the round hole of the small pipe rear section fixing plate, the small pipe rear section 7 is fixedly connected with the rear end fixing plate 13 through air-tight welding.
The welding of the front end of the big pipe 8 has a back pipe hoop 3, and rubber seal 15 is equipped with to the inboard of back pipe hoop 3, and 6 through welded fastening of tubule anterior segment are on back pipe hoop 3, and the external diameter and the internal diameter of 6 anterior portions of tubule anterior segment external diameter and the internal diameter of the anterior segment pipeline of internal diameter and second straight tube 5 are all the same, and the external diameter and the internal diameter of 6 rear portions of tubule anterior segment external diameter and the internal diameter of the back end pipeline of internal diameter and second straight tube 5 are all the same.
In another specific implementation manner of the embodiment of the invention, the width of the rectangular hole on the side surface of the large tube 8 is larger than the outer diameter of the small tube rear section 7, the length of the rectangular hole just accommodates that the small tube rear section 7 and the small tube rear section fixing plate 13 are welded and then extend into the rear part of the small tube front section 6, the small tube rear section fixing plate 13 is attached to the rectangular hole and covers the rectangular hole on the side surface of the large tube 8, and when the small tube rear section 7 is inserted into the rear part of the small tube front section 6, the small tube rear section fixing plate 13 and the large tube 8 are welded in an airtight manner.
Optionally, the inner diameter and the outer diameter of the large pipe end of the reducing joint 9 are the same as those of the large pipe 8, and the front end face of the reducing joint 9 is attached to the rear end face of the large pipe 8 and is welded in an airtight manner.
The inner diameter of the second rubber pipeline 12 is the same as the outer diameter of one side of the small pipe of the reducing joint 9, the first rubber pipeline 10 is just sleeved on one side of the small pipe of the reducing joint 9, after the first rubber pipeline 10 is sleeved on one side of the small pipe of the reducing joint 9, the hoop is connected to the sleeved position, and the bolt on the hoop 11 is tightened, so that the first rubber pipeline 10 cannot fall off from the reducing joint 9.
Optionally, a second rubber pipe 12 is installed in the first 90 ° elbow 1, the first straight pipe 4, the front small pipe section 6 and the rear small pipe section 7, an outer diameter of the second rubber pipe 12 is smaller than an inner diameter of the air suction pipe 110, and an end face of the second rubber pipe 12 is provided with a flange, an outer diameter of which is larger than an inner diameter of the second 90 ° elbow 14.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are not particularly limited to the specific examples described herein.
Claims (5)
1. A dust extraction apparatus for an interior surface of a solid rocket engine case, the dust extraction apparatus comprising: a blowing pipeline, a suction pipeline and a branch pipeline, wherein,
the air suction pipeline is connected with the air blowing pipeline in a nested manner, and the air suction pipeline is arranged on the inner side of the air blowing pipeline;
the air blowing pipeline and the air suction pipeline are both connected with the branch pipeline;
the air blowing pipeline is connected with an air blower through a large pipe on the branch pipeline, and the air suction pipeline is connected with an air suction machine through a small pipe on the branch pipeline; the air blowing pipeline is connected with the air suction pipeline in a nested manner, the air suction pipeline is arranged in the air blowing pipeline, the air blowing pipeline can realize air curtain sealing, and the problem of secondary diffusion of dust particles in the dust removal process is solved;
after entering an operating state, delivering an airflow by the blower through the blower duct to the solid rocket engine to blow up dust particles located on an inner surface of a casing of the solid rocket engine; the dust particles are absorbed through the air suction pipeline, and the dust particles are brought into the dirt collecting device through the air suction pipeline by the suction fan;
the blowing pipeline comprises a first 90-degree bent pipe and a first straight pipe, and the first 90-degree bent pipe and the first straight pipe as well as the first straight pipe and the first straight pipe are connected through a front pipe hoop and a rear pipe hoop;
the air suction pipeline comprises a second 90-degree bent pipe, a second straight pipe and a first rubber pipeline;
the branch pipeline comprises a large pipe, a small pipe front section, a small pipe rear section fixing plate, a reducing joint, a second rubber pipeline and a clamp;
the front pipe hoop is hermetically welded with the rear end faces of the first 90-degree bent pipe and the first straight pipe;
the rear pipe hoop is hermetically welded with the front end faces of the first straight pipe and the large pipe;
the distance between the outer side end face of the front pipe hoop and the inner side end face of the rear pipe hoop is less than 4mm when the threads of the front pipe hoop and the rear pipe hoop are completely screwed;
a rubber sealing ring is arranged on the inner side of the rear pipe hoop, the thickness of the rubber sealing ring is more than 4mm, and the outer diameter of the rubber sealing ring is equal to the inner diameter width of the rear pipe hoop;
round holes are reserved in the middle of the front pipe hoop and the middle of the rear pipe hoop, four fan-shaped holes are reserved in the outer ring of the round holes, and the round holes and the fan-shaped holes of the front pipe hoop and the rear pipe hoop are equal in size;
the outer diameters of the second 90-degree bent pipe and the second straight pipe are smaller than the inner diameters of the first 90-degree bent pipe and the first straight pipe, the outer diameters of the front section pipelines of the second 90-degree bent pipe and the second straight pipe are equal to the diameters of the middle circular holes of the front pipe hoop and the rear pipe hoop, the inner diameters of the rear section pipelines of the second 90-degree bent pipe and the second straight pipe are larger than the outer diameters of the front section pipelines of the second 90-degree bent pipe and the second straight pipe, the outer diameters of the second 90-degree bent pipe and the rear-section pipeline of the second straight pipe are larger than the diameters of the middle round holes of the front pipe hoop and the rear pipe hoop, the second 90-degree bent pipe and the second straight pipe are positioned through the second 90-degree bent pipe and the convex part of the rear-section pipeline of the second straight pipe, the front-section pipelines of the second 90-degree bent pipe and the second straight pipe penetrate through the middle round holes of the front pipe hoop and the rear pipe hoop and are fixedly connected with the front pipe hoop and the rear pipe hoop through welding;
a rectangular hole is formed in the side face of a large pipe of the branch pipeline, the outer diameter and the inner diameter of the large pipe are respectively the same as those of the first straight pipe, the rear section of a small pipe of the branch pipeline is a 90-degree bent pipe, a flange is arranged at one end of the rear section of the small pipe, and the inner diameter and the outer diameter of the rear section of the small pipe are respectively the same as those of the front section of the straight pipe;
the small pipe rear section fixing plate of the branch pipeline is just attached to the large pipe and can cover a rectangular hole in the side face of the large pipe, a round hole is reserved in the middle of the small pipe rear section fixing plate of the branch pipeline, the diameter of the round hole is equal to the outer diameter of the small pipe rear section, the round hole is positioned through a flange of the small pipe rear section, and the small pipe rear section penetrates through the round hole of the small pipe rear section fixing plate and is fixedly connected with the small pipe rear section fixing plate through air-tight welding;
the rear pipe hoop is welded at the front end of the large pipe, a rubber sealing ring is installed on the inner side of the rear pipe hoop, the front part of the small pipe is fixed on the rear pipe hoop in a welding mode, the outer diameter and the inner diameter of the front part of the small pipe are the same as those of the front-section pipeline of the second straight pipe, and the outer diameter and the inner diameter of the rear part of the front part of the small pipe are the same as those of the rear-section pipeline of the second straight pipe.
2. The dust collector of claim 1 wherein the second 90 ° bend and the second straight tube have a rear tube length greater than the threaded length of the front ferrule and the rear ferrule.
3. The dust removing device of claim 1, wherein the lateral rectangular hole of the large tube has a width larger than the outer diameter of the rear section of the small tube and a length just enough to accommodate the rear section of the small tube, the rear section of the small tube is welded to the rear section fixing plate and then extends into the lateral rectangular hole of the large tube and is inserted into the rear part of the front section of the small tube, the rear section fixing plate is attached to the rectangular hole and covers the rectangular hole of the lateral surface of the large tube, and the rear section fixing plate and the large tube are hermetically welded when the rear section of the small tube is inserted into the rear part of the front section of the small tube.
4. The dust collector according to claim 1, wherein the inside and outside diameters of the large pipe end of the reducing joint are the same as those of the large pipe, and the front end face of the reducing joint is attached to the rear end face of the large pipe and hermetically welded;
the inner diameter of the first rubber pipeline is the same as the outer diameter of one side of the small pipe of the reducing joint, the first rubber pipeline is just sleeved on one side of the small pipe of the reducing joint, the hoop is connected to the sleeved position after the first rubber pipeline is sleeved on one side of the small pipe of the reducing joint, and the first rubber pipeline is prevented from falling off the reducing joint by tightening the bolt on the hoop.
5. The dust removing apparatus according to claim 1, wherein the first 90 ° elbow, the first straight pipe, the front small pipe section and the rear small pipe section are provided with a second rubber pipe, the second rubber pipe has an outer diameter smaller than the inner diameter of the air suction pipe, and an end surface of the second rubber pipe is provided with a flange having an outer diameter larger than the inner diameter of the second 90 ° elbow.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011408575.9A CN112756353B (en) | 2020-12-04 | 2020-12-04 | Dust collector of solid rocket engine shell internal surface |
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| CN202011408575.9A CN112756353B (en) | 2020-12-04 | 2020-12-04 | Dust collector of solid rocket engine shell internal surface |
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| CN112756353A CN112756353A (en) | 2021-05-07 |
| CN112756353B true CN112756353B (en) | 2022-08-19 |
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| CN103639152A (en) * | 2013-11-25 | 2014-03-19 | 银川博聚工业产品设计有限公司 | High pressure air blowing and dust collection integrated device |
| JP6711776B2 (en) * | 2017-03-30 | 2020-06-17 | 日本碍子株式会社 | Powder recovery device |
| CN210651142U (en) * | 2019-07-08 | 2020-06-02 | 南通跃通数控设备股份有限公司 | Roller type air and brush mixed furniture surface dust cleaning device |
| CN211938305U (en) * | 2019-12-23 | 2020-11-17 | 汕头市东方科技有限公司 | In-tank foreign matter blowing and sucking device |
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2020
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