CN203598974U - Small space coating spray gun - Google Patents
Small space coating spray gun Download PDFInfo
- Publication number
- CN203598974U CN203598974U CN201320813822.2U CN201320813822U CN203598974U CN 203598974 U CN203598974 U CN 203598974U CN 201320813822 U CN201320813822 U CN 201320813822U CN 203598974 U CN203598974 U CN 203598974U
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- nozzle
- pipe
- slurry pipe
- spray gun
- little space
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Abstract
The utility model relates to a size spraying gun, in particular to a small space coating spray gun used for protecting construction of the pipe surface of a power station boiler heat exchanger (a coal economizer or a reheater). The small space coating spray gun comprises a nozzle, a size pipe, an outer air pipe and a rear base sequentially from the front end to the rear end, wherein the size pipe is sleeved with the outer air pipe and is connected with the nozzle integrally to form a spray head structure, the size pipe is sleeved with the outer air pipe and then is matched with the rear base to form a gas-liquid split moving structure, and the size pipe is divided into an inner size pipe body and an outer size pipe body. Aiming at the current condition of protection of the power station boiler heat exchanger, the small space coating spray gun adopts the sleeved pipe assembly and nozzle integrated structure, the size and volume of the mouth of the spray gun are greatly reduced, and converging of gas and liquid at the position of the nozzle at last enables the service life of equipment to be prolonged.
Description
Technical field
The utility model relates to a kind of slurry spray gun, specifically for the little space of the one blackwash sprayer of station boiler heat exchanger (economizer, reheater) tube-surface construction of prevention work.
Background technology
Generating station boiler unit heat energy is more and more tending towards high quantization, and design is tending towards densification, thereby causes heat exchanger ash wearing and tearing aggravation, and wherein economizer tube spacing is a lot of for being less than the spacing of 30mm at present; Traditional slurry spray gun cannot spray to 3 pipes of arranging at all, arranges the construction of the wear-resisting slurry of tube-surface and brings very big difficulty, simultaneously also for the reliability service of heat exchanger brings hidden danger to 3.
In the situation that cannot carrying out direct spraying slip, traditional protectiving scheme adopts slurry to water perfusion to cover mode and carry out, not only waste a large amount of slurries, also cannot guarantee that the position of be hopeful spraying obtains the more consistent overcoat of thickness simultaneously more.
Summary of the invention
In order to overcome above-mentioned defect, the purpose of this utility model is to provide a kind of little space blackwash sprayer, adopts mutual sleeve pipe and nozzle integral structure, has greatly reduced size and the volume of Spray gun nozzle, simultaneously gas-liquid, finally the joining of nozzle, has improved the service life of equipment.
To achieve these goals, the utility model adopts following technical scheme:
A kind of little space blackwash sprayer, it is followed successively by rear end from spray gun front end: nozzle, slurry pipe, outer space tracheae, back seat; Described slurry pipe and outer space tracheae overlap mutually, and with the nozzle composition nozzle structure that is connected as a single entity; Described slurry pipe and outer space tracheae be cover and back seat mix proportion gas-liquid split motion structure mutually; Slurry pipe is divided into interior slurry pipe and outer slurry pipe.
Described nozzle profile is of a size of between Ф 10 ~ Ф 20mm.
The angle of the bellmouth of nozzle is between 2o ~ 5o, and air turning angle a is between 115 o ~ 165 o.
The material of described nozzle is wear-resistant copper alloy or wear-resisting alloy steel.
Described slurry pipe inside pipe wall applies anti-stick coating, and slurry pipe material is copper alloy or stainless steel.
Interior slurry pipe and nozzle adopt screw thread and adhesive composite joint mode, and outer slurry pipe adopts and is threaded with nozzle.
Back seat is Cu alloy material, with connecing compressed-air actuated hickey.
Outer space tracheae with back seat for being threaded; Interior slurry pipe adopts between sealing ring and back seat and carries out air seal.
Thick oar slurry is input to interior slurry pipe with compression pump; Grout is that the negative pressure being produced after by nozzle by compressed air sucks, and regulates the soakage of compressed-air actuated flow capable of regulating slurry.
The utility model completes the spraying work of slurry by following steps:
The interior slurry pipe that the slurry preparing improves plastic flexible pipe and spray gun is connected, and thick oar coating adopts press pump slurry to be sent into the inside of slurry pipe, and mass flowing nozzle, and compressed air atomizing sprays to matrix surface.Grout can directly enter interior slurry pipe by gravity flow mode, under the effect of nozzle negative pressuren zone, sprays to matrix surface by nozzle atomization.
Compressed air is connected by the air interface at, back seat of flexible pipe and spray gun, and adjusting gas pressure is atomizing effect and the spray efficiency of capable of regulating slurry.
After tracheae and slurry pipe and spray gun are connected, spray gun is deep into the position that deep layer pipe row needs spraying, starts compression pump and open air valve and can directly spray.
The minimum gap that this spray gun can spray is 14mm, and the maximum spraying degree of depth is 2000mm, and adopting compression pump to carry slurry maximal efficiency is 100kg/hr, and adopting the maximum spray efficiency of gas negative pressure inhalation is 35kg/hr.
The beneficial effects of the utility model:
The utility model, for the current protection situation of station boiler heat exchanger, adopts mutual sleeve pipe and nozzle integral structure, has greatly reduced size and the volume of Spray gun nozzle, and simultaneously gas-liquid, finally the joining of nozzle, has improved the service life of equipment.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is the structure for amplifying schematic diagram of nozzle in the utility model.
Fig. 3 is the structure for amplifying schematic diagram of back seat in the utility model.
The specific embodiment
Be described in detail below in conjunction with 1,2,3 pairs of the utility model of accompanying drawing:
A kind of little space blackwash sprayer, it is followed successively by rear end from spray gun front end: nozzle 1, slurry pipe 2, outer space tracheae 3, back seat 4; Described slurry pipe 2 and outer space tracheae 3 overlap mutually, and with the nozzle 1 composition nozzle structure that is connected as a single entity; Described slurry pipe 2 and outer space tracheae 3 cover and back seat 4 mix proportion gas-liquid split motion structures mutually; Slurry pipe 2 is divided into interior slurry pipe and outer slurry pipe.
Described nozzle 1 appearance and size is between Ф 10 ~ Ф 20mm.
The angle of the bellmouth of nozzle 1 is between 2o ~ 5o, and air turning angle a is between 115 o ~ 165 o.
The material of described nozzle is wear-resistant copper alloy or wear-resisting alloy steel.
Described slurry pipe 2 inside pipe walls apply anti-stick coating, and slurry pipe 2 materials are copper alloy or stainless steel.
Interior slurry pipe and nozzle 1 adopt screw thread and adhesive composite joint mode, and outer slurry pipe adopts and is threaded with nozzle 1.
Outer space tracheae 3 with back seat 4 for being threaded; Interior slurry pipe adopts between sealing ring and back seat 4 and carries out air seal.
Thick oar slurry is input to interior slurry pipe with compression pump; Grout is that the negative pressure being produced after by nozzle by compressed air sucks, and regulates the soakage of compressed-air actuated flow capable of regulating slurry.
The utility model completes the spraying work of slurry by following steps:
The interior slurry pipe that the slurry preparing improves plastic flexible pipe and spray gun is connected, and thick oar coating adopts press pump slurry to be sent into the inside of slurry pipe, and mass flowing nozzle, and compressed air atomizing sprays to matrix surface.Grout can directly enter interior slurry pipe by gravity flow mode, under the effect of nozzle negative pressuren zone, sprays to matrix surface by nozzle atomization.
Compressed air is connected by the air interface at, back seat of flexible pipe and spray gun, and adjusting gas pressure is atomizing effect and the spray efficiency of capable of regulating slurry.
After tracheae and slurry pipe and spray gun are connected, spray gun is deep into the position that deep layer pipe row needs spraying, starts compression pump and open air valve and can directly spray.
The minimum gap that this spray gun can spray is 14mm, and the maximum spraying degree of depth is 2000mm, and adopting compression pump to carry slurry maximal efficiency is 100kg/hr, and adopting the maximum spray efficiency of gas negative pressure inhalation is 35kg/hr.
Claims (8)
1. a little space blackwash sprayer, is characterized in that: it is followed successively by rear end from spray gun front end: nozzle (1), slurry pipe (2), outer space tracheae (3), back seat (4); Described slurry pipe (2) and outer space tracheae (3) overlap mutually, and with nozzle (1) the composition nozzle structure that is connected as a single entity; Described slurry pipe (2) and outer space tracheae (3) be cover and back seat (4) mix proportion gas-liquid split motion structure mutually; Slurry pipe (2) is divided into interior slurry pipe and outer slurry pipe.
2. little space according to claim 1 blackwash sprayer, is characterized in that: described nozzle (1) appearance and size is between Ф 10 ~ Ф 20mm.
3. little space according to claim 1 blackwash sprayer, is characterized in that: the angle of the bellmouth of nozzle (1) is between 2o ~ 5o, air turning angle a is between 115 o ~ 165 o.
4. according to the little space blackwash sprayer described in claim 1 or 2 or 3, it is characterized in that: the material of described nozzle is wear-resistant copper alloy or wear-resisting alloy steel.
5. little space according to claim 1 blackwash sprayer, is characterized in that: described slurry pipe (2) inside pipe wall applies anti-stick coating, and slurry pipe (2) material is copper alloy or stainless steel.
6. little space according to claim 1 blackwash sprayer, is characterized in that: interior slurry pipe and nozzle (1) adopt screw thread and adhesive composite joint mode, and outer slurry pipe adopts and is threaded with nozzle (1).
7. little space according to claim 1 blackwash sprayer, is characterized in that: back seat (4) is Cu alloy material, with connecing compressed-air actuated hickey.
8. according to the little space blackwash sprayer described in claim 1 or 7, it is characterized in that: outer space tracheae (3) with back seat (4) for being threaded; Interior slurry pipe adopts between sealing ring and back seat (4) and carries out air seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320813822.2U CN203598974U (en) | 2013-12-12 | 2013-12-12 | Small space coating spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320813822.2U CN203598974U (en) | 2013-12-12 | 2013-12-12 | Small space coating spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203598974U true CN203598974U (en) | 2014-05-21 |
Family
ID=50711675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320813822.2U Expired - Fee Related CN203598974U (en) | 2013-12-12 | 2013-12-12 | Small space coating spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203598974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623958A (en) * | 2013-12-12 | 2014-03-12 | 江西恒大高新技术股份有限公司 | Small-space coating spray gun |
-
2013
- 2013-12-12 CN CN201320813822.2U patent/CN203598974U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623958A (en) * | 2013-12-12 | 2014-03-12 | 江西恒大高新技术股份有限公司 | Small-space coating spray gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20211212 |