CN114192362A - Material recovery device for pipe fitting inner coating negative pressure production equipment - Google Patents
Material recovery device for pipe fitting inner coating negative pressure production equipment Download PDFInfo
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- CN114192362A CN114192362A CN202111373068.0A CN202111373068A CN114192362A CN 114192362 A CN114192362 A CN 114192362A CN 202111373068 A CN202111373068 A CN 202111373068A CN 114192362 A CN114192362 A CN 114192362A
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- negative pressure
- piston
- pipe fitting
- production equipment
- containing chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/06—Storage, supply or control of the application of particulate material; Recovery of excess particulate material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/005—Apparatus specially designed for applying particulate materials to the inside of hollow work
- B05C19/007—Apparatus specially designed for applying particulate materials to the inside of hollow work for applying the particulate materials to the inside of hollow tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a material recovery device for negative pressure production equipment for an internal coating of a pipe fitting, wherein the feed end of the material recovery device is connected with a negative pressure device, the discharge end of the material recovery device is connected with a fluidized bed, a workbench is arranged above the fluidized bed and used for placing a pipe fitting machined part, and the negative pressure device can be communicated with the pipe fitting machined part in a switching-on and switching-off manner. The invention provides a material recovery device for negative pressure production equipment for a coating in a pipe fitting, which can ensure that the negative pressure state in a negative pressure tank is kept constant and is not changed, and can convey dry powder recovered from the negative pressure tank back to a fluidized bed; the structure is reasonable, and the use is convenient; the recycling of the dry powder is realized, and the waste of the dry powder is avoided; the whole operation space has no powder flying, the working environment of workers is ensured, and the environmental protection property is strong.
Description
Technical Field
The invention relates to the technical field of powder recovery devices, in particular to a material recovery device for negative pressure production equipment for a coating in a pipe fitting.
Background
With the development of economy, the population increases, water resources are in short supply in many areas, some urban drinking water sources are seriously polluted, and the safety of drinking water for residents is threatened. This creates water transportation projects such as the south-to-north water transfer. Water resources are generally transported in a buried pipe mode. The national standards and regulations committee makes clear regulations on the standards of drinking water, which requires that the buried pipe must meet the requirements of safety, no toxicity, corrosion resistance and the like.
In the production process of the buried pipe, an anti-corrosion layer needs to be coated on the inner wall, and the inner walls of connecting pieces such as an elbow, a three-way pipe, a straight-through pipe and a flange of the buried pipe need to be coated with the anti-corrosion layer. The general conventional way is: taking the elbow as an example, one end of the heated elbow is firstly plugged by an end cap, corrosion-resistant powder is put into the end cap, then the other end of the elbow is also plugged by the end cap, and an operator brings a heat-insulating glove and shakes the overturned elbow back and forth to melt the powder on the inner wall to form the corrosion-resistant inner wall. By adopting the production mode, various defects exist, the most important is that the powder is seriously wasted, and in the process of loading and pouring, the powder is easy to fly, so that the working environment of an operator is greatly influenced. Some spray guns are adopted for spraying, but dry powder is easy to fly, so that the waste degree is high; and the corrosion-resistant inner wall formed in this way is not uniform in thickness.
Therefore, the development of a powder recovery device capable of recovering dry powder and having high recovery rate is urgently needed to assist the pipe fitting inner coating production equipment.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a material recovery device for negative pressure production equipment for a coating in a pipe fitting, which can ensure that the negative pressure state in a negative pressure tank is kept constant and not changed, and can convey dry powder recovered from the negative pressure tank back to a fluidized bed; the structure is reasonable, and the use is convenient; the recycling of the dry powder is realized, and the waste of the dry powder is avoided; the whole operation space has no powder flying, the working environment of workers is ensured, and the environmental protection property is strong.
In order to achieve the purpose, the invention provides a material recovery device for negative pressure production equipment for a coating in a pipe fitting, wherein the feeding end of the material recovery device is connected with a negative pressure device, the discharging end of the material recovery device is connected with a fluidized bed, a workbench is arranged above the fluidized bed and used for placing a pipe fitting workpiece, and the negative pressure device can be communicated with the pipe fitting workpiece in a switching mode.
As a preferred technical scheme, the material recovery device comprises a piston device and a spiral pushing device, and two guide pipes which are communicated with the spiral pushing device are arranged at the bottom of the piston device.
According to a preferable technical scheme, the piston device comprises a pipe wall and a piston assembly arranged in the pipe wall, the piston assembly comprises a shaft, a first piston group and two second piston groups are sleeved on the shaft, the first piston group is arranged in the middle of the shaft, and the two second piston groups are symmetrically arranged on two sides of the first piston group. Two material conveying containing cavities are formed between the pipe wall and the first piston group and between the pipe wall and the second piston group and are respectively a first material conveying containing cavity and a second material conveying containing cavity.
As a preferred technical scheme, one end of the shaft is provided with a connecting nut which is used for connecting a cylinder, and a stud is arranged between the cylinder and the piston device.
According to a preferable technical scheme, the spiral pushing device comprises a spiral shell and a spiral pushing assembly, the spiral pushing assembly is connected with a speed reducer, and the discharge end of the spiral pushing device is connected to the fluidized bed.
As preferred technical scheme, when first defeated material holds the chamber and removes to negative pressure jar and piston device's connection mouth department (negative pressure jar bottom discharge gate promptly), first defeated material holds chamber and negative pressure jar intercommunication, and first defeated material holds the intracavity and also forms the negative pressure state, and first defeated material is held intracavity pressure and is equaled negative pressure jar internal pressure this moment, and fluidic powder gets into first defeated material and holds the chamber automatically, and the defeated material of second holds the chamber and is normal pressure state this moment.
As preferred technical scheme, when the second defeated material holds the chamber and removes the connector department (being negative pressure tank bottom discharge gate) to negative pressure jar and piston device, the defeated material of this moment holds chamber and negative pressure jar intercommunication, the defeated material of second holds the intracavity and also forms the negative pressure state, the defeated material of this moment holds intracavity pressure and equals negative pressure jar internal pressure, the defeated material of second is automatic gets into the defeated material of second and holds the chamber, first defeated material holds the chamber and is normal pressure state this moment, the powder that is arranged in first defeated material and holds the intracavity falls into corresponding pipe under the effect of gravity, and get into spiral pusher from this, spiral pusher's exit end gets into the fluidized bed.
Preferably, the first piston group comprises at least one piston, and the second piston group comprises at least one piston.
Preferably, the first piston group is composed of two pistons, and the second piston group is composed of one piston. As a preferred technical solution, it is proposed that,
the invention provides a material recovery device for negative pressure production equipment for a coating in a pipe fitting, which can ensure that the negative pressure state in a negative pressure tank is kept constant and is not changed, and can convey dry powder recovered from the negative pressure tank back to a fluidized bed; the structure is reasonable, and the use is convenient; the recycling of the dry powder is realized, and the waste of the dry powder is avoided; the whole operation space has no powder flying, the working environment of workers is ensured, and the environmental protection property is strong.
Drawings
FIG. 1 is a schematic structural diagram of a material recovery device for negative pressure production equipment for coating in a pipe fitting according to the invention;
FIG. 2 is a schematic structural diagram of a material recovery device for negative pressure production equipment with a coating in a pipe fitting, with a part of a shell removed;
FIG. 3 is a schematic structural view of the spiral pushing assembly of the present invention;
FIG. 4 is a schematic structural view of the piston assembly of the present invention;
FIG. 5 is a schematic structural diagram of a negative pressure production device for coating the inside of a pipe fitting according to the present invention;
FIG. 6 is a schematic structural diagram of the negative pressure production equipment for coating in the pipe fitting of the present invention with a part of the baffle removed;
1-negative pressure device, 2-material recovery device, 21-piston device, 22-spiral pushing device, 23-piston assembly, 231-shaft, 232-first piston group, 233-second piston group, 234-connecting nut, 24-spiral pushing assembly, 25-cylinder, 26-stud, 27-speed reducer, 28-conduit, 29-conveying material accommodating cavity, 291-first conveying material accommodating cavity, 292-second conveying material accommodating cavity, 3-fluidized bed, 4-pipe dividing device, 5-first hose connector, 6-first hose and 7-pipe fitting workpiece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6, the invention provides a material recovery device for a negative pressure production device for coating in a pipe, a feed end of the material recovery device 2 is connected with a negative pressure device 1, a discharge end of the material recovery device 2 is connected with a fluidized bed 3, a workbench is arranged above the fluidized bed 3 and used for placing a pipe workpiece 7, and the negative pressure device 1 can be communicated with the pipe workpiece 7 in an on-off manner.
The negative pressure device 1 comprises a negative pressure tank and an induced draft fan.
During operation, the pipe fitting workpiece 7 is placed on the workbench, the negative pressure device 1 is started, the negative pressure device 1 is communicated with the pipe fitting workpiece 7 through the pipe separating device 4, the first hose 6 and the first hose connector 15, and the pressure state in the pipe fitting workpiece 7 is changed into negative pressure and the pressure is equal to the negative pressure in the negative pressure device 1. Due to the effect of the negative pressure in the pipe work piece 7, the epidemic powder in the fluidized bed rapidly fills the pipe work piece 7 and rapidly melts on the inner wall of the pipe work piece 7 to form an anti-corrosion layer. A little fluid powder enters the negative pressure device 1 and then enters the fluidized bed 3 through the material recovery device 2, so that the recovery of the dry powder is realized.
The material recovery device 2 is arranged at a bottom discharge hole of the negative pressure device 1, the material recovery device 2 comprises a piston device 21 and a spiral pushing device 22, and two guide pipes 28 are arranged at the bottom of the piston device 21 and communicated with the spiral pushing device. The top of the piston device 21 is tightly connected to the bottom of the negative pressure device 1 through a flange, a bolt and a nut.
The piston device 21 comprises a pipe wall and a piston assembly 23 arranged in the pipe wall, the piston assembly 23 comprises a shaft 231, a first piston group 232 and two second piston groups 233 are sleeved on the shaft 231, and the first piston group 232 comprises at least one piston, preferably two pistons; the second piston group 233 comprises at least one piston, preferably two pistons. The first piston group 232 is disposed at a middle position of the shaft 231, and the two second piston groups 233 are symmetrically disposed at both sides of the first piston group 232. Two material conveying containing cavities 29, namely a first material conveying containing cavity 291 and a second material conveying containing cavity 292 are formed between the pipe wall and a first piston group 232 and two second piston groups 233.
The piston assembly 23 is connected to the cylinder 25, and specifically, a connection nut 234 is disposed at one end of the shaft 231, the connection nut 234 is used for connecting the cylinder 25, and a stud 26 is disposed between the cylinder 25 and the piston assembly 23.
The spiral pushing device 22 comprises a spiral shell and a spiral pushing assembly 24, and the spiral pushing assembly 24 is connected with a speed reducer 27.
When fluid powder enters the piston device 21 from the negative pressure device 1, the piston assembly 23 moves left and right under the action of the cylinder 25, when the first material conveying containing cavity 291 moves to a connecting port of the negative pressure device 1 and the piston device 21 (namely a discharge port at the bottom of the negative pressure tank), the first material conveying containing cavity 291 is communicated with the negative pressure device 1, a negative pressure state is also formed in the first material conveying containing cavity 291, at the moment, the pressure in the first material conveying containing cavity 291 is equal to the pressure in the negative pressure device 1, the fluid powder automatically enters the first material conveying containing cavity 291, and at the moment, the second material conveying containing cavity 292 is in a normal pressure state; along with the driving action of the cylinder 25, the second material conveying containing cavity 292 moves to the connecting port of the negative pressure device 1 and the piston device 21 (namely, a discharge port at the bottom of the negative pressure tank), at this time, the second material conveying containing cavity 292 is communicated with the negative pressure device 1, a negative pressure state is also formed in the second material conveying containing cavity 292, at this time, the internal pressure of the second material conveying containing cavity 292 is equal to the internal pressure of the negative pressure device 1, the fluid-shaped powder automatically enters the second material conveying containing cavity 292, at this time, the first material conveying containing cavity 291 is in a normal pressure state, the powder in the first material conveying containing cavity 291 falls into the corresponding guide pipe 28 under the action of gravity, and then enters the spiral pushing device 22, the outlet end of the spiral pushing device 22 is connected to the fluidized bed 3, and finally enters the fluidized bed 3, and the circulation is carried out, so as to realize the recovery of the powder.
The fluidized bed 3 is used for containing dry powder, and after air is introduced into the fluidized bed 3, the dry powder is in a fluid state, so that the fluidized bed is fluid powder and has very good fluidity.
The fluid powder is in a mixed state of air and dry powder, the volume ratio of the air to the dry powder in the fluid powder is 2-3: 7-8, and the particle size of the dry powder is 40-80 meshes.
The invention provides a material recovery device for negative pressure production equipment for a coating in a pipe fitting, which can ensure that the negative pressure state in a negative pressure tank is kept constant and is not changed, and can convey dry powder recovered from the negative pressure tank back to a fluidized bed; the structure is reasonable, and the use is convenient; the recycling of the dry powder is realized, and the waste of the dry powder is avoided; the whole operation space has no powder flying, the working environment of workers is ensured, and the environmental protection property is strong.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a material recovery unit for pipe fitting undercoating negative pressure production facility, a serial communication port, vacuum device (1) is connected to the feed end of material recovery unit (2), fluidized bed (3) are connected to the discharge end of material recovery unit (2), the top of fluidized bed (3) is provided with the workstation, the workstation is used for placing pipe fitting machined part (7), but intercommunication pipe fitting machined part (7) of vacuum device (1) break-make.
2. The material recovery device for the negative pressure production equipment for pipe fitting internal coating according to claim 1, wherein the material recovery device (2) comprises a piston device (21) and a spiral pushing device (22), and two guide pipes (28) are arranged at the bottom of the piston device (21) and are communicated with the spiral pushing device (22).
3. The material recovery device for the negative pressure production equipment with the pipe internal coating as claimed in claim 2, wherein the piston device (21) comprises a pipe wall and a piston assembly (23) arranged in the pipe wall, the piston assembly (23) comprises a shaft (231), the shaft (231) is sleeved with a first piston group (232) and two second piston groups (233), the first piston group (232) is arranged in the middle of the shaft (231), and the two second piston groups (233) are symmetrically arranged on two sides of the first piston group (232);
two material conveying containing cavities (29) are formed between the pipe wall and a first piston group (232) and two second piston groups (233), and are respectively a first material conveying containing cavity (291) and a second material conveying containing cavity (292).
4. The material recycling device for negative pressure production equipment in pipe fitting internal coating according to claim 3, wherein one end of the shaft (231) is provided with a connecting nut (234), the connecting nut (234) is used for connecting a cylinder (25), and a stud (26) is arranged between the cylinder (25) and the piston device (23).
5. The material recovery device for the negative pressure production equipment in the pipe fitting coating is characterized in that the spiral pushing device (22) comprises a spiral shell and a spiral pushing assembly (24), the spiral pushing assembly (24) is connected with a speed reducer (27), and the discharge end of the spiral pushing device (22) is connected to the fluidized bed (3).
6. The material recycling device for negative pressure production equipment in pipe fitting internal coating according to claim 5, wherein when the first material transporting containing chamber (291) moves to the connecting port of the negative pressure tank (1) and the piston device (21), the first material transporting containing chamber (291) is communicated with the negative pressure tank (1), a negative pressure state is formed in the first material transporting containing chamber (291), the pressure in the first material transporting containing chamber (291) is equal to the pressure in the negative pressure tank (1), the fluid powder automatically enters the first material transporting containing chamber (291), and the second material transporting containing chamber (292) is in a normal pressure state.
7. The material recycling device for negative pressure production equipment in pipe fitting internal coating according to claim 5, wherein when the second material transporting and containing chamber (292) moves to the connection port of the negative pressure tank (1) and the piston device (21), the second material transporting and containing chamber (292) is communicated with the negative pressure tank (1), a negative pressure state is formed in the second material transporting and containing chamber (292), the pressure in the second material transporting and containing chamber (292) is equal to the pressure in the negative pressure tank (1), the fluid-like powder automatically enters the second material transporting and containing chamber (292), the first material transporting and containing chamber (291) is in a normal pressure state, the powder in the first material transporting and containing chamber (291) falls into the corresponding guide pipe (28) under the action of gravity and then enters the spiral pushing device (22), and the outlet end of the spiral pushing device (22) enters the fluidized bed (3).
8. The material recycling device for negative pressure production equipment in pipe fitting coating according to claim 2, wherein the first piston group (232) comprises at least one piston, and the second piston group (233) comprises at least one piston.
9. The material recycling device for negative pressure production equipment in pipe fitting coating according to claim 8, wherein the first piston group (232) is two pistons, and the second piston group (233) is one piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111373068.0A CN114192362B (en) | 2021-11-19 | 2021-11-19 | Material recovery device for pipe fitting inner coating negative pressure production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111373068.0A CN114192362B (en) | 2021-11-19 | 2021-11-19 | Material recovery device for pipe fitting inner coating negative pressure production equipment |
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| CN114192362A true CN114192362A (en) | 2022-03-18 |
| CN114192362B CN114192362B (en) | 2023-05-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1020253A (en) * | 1962-10-10 | 1966-02-16 | Johannes Josephus Heilker | Method and apparatus for coating the inside of hollow bodies |
| DE3610608A1 (en) * | 1986-03-29 | 1987-10-01 | Resicoat Gmbh | Process for the interior coating of curved metal pipes with powder paints and device for carrying out the process |
| CN2825132Y (en) * | 2005-06-10 | 2006-10-11 | 天津新技术产业园区天博科工贸有限公司 | Full automatic powder recovery device by pipeline hot spraying |
| CN2825131Y (en) * | 2005-06-10 | 2006-10-11 | 天津新技术产业园区天博科工贸有限公司 | Pulse back-blowing filter-core filtering full-automatic powder recovery device |
| CN103691215A (en) * | 2013-12-13 | 2014-04-02 | 郑州东方安彩耐火材料有限公司 | Heat preservation powder negative pressure recycling system in production of refractory material by using fusion casting method |
| CN203664088U (en) * | 2014-01-27 | 2014-06-25 | 宁波科鑫腐蚀控制工程有限公司 | Spraying and powder recycling device for epoxy coated steel bars |
| CN213558169U (en) * | 2020-10-09 | 2021-06-29 | 青岛海瑞涂装设备有限公司 | Automatic recovery system that dusts of coating line |
-
2021
- 2021-11-19 CN CN202111373068.0A patent/CN114192362B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1020253A (en) * | 1962-10-10 | 1966-02-16 | Johannes Josephus Heilker | Method and apparatus for coating the inside of hollow bodies |
| DE3610608A1 (en) * | 1986-03-29 | 1987-10-01 | Resicoat Gmbh | Process for the interior coating of curved metal pipes with powder paints and device for carrying out the process |
| CN2825132Y (en) * | 2005-06-10 | 2006-10-11 | 天津新技术产业园区天博科工贸有限公司 | Full automatic powder recovery device by pipeline hot spraying |
| CN2825131Y (en) * | 2005-06-10 | 2006-10-11 | 天津新技术产业园区天博科工贸有限公司 | Pulse back-blowing filter-core filtering full-automatic powder recovery device |
| CN103691215A (en) * | 2013-12-13 | 2014-04-02 | 郑州东方安彩耐火材料有限公司 | Heat preservation powder negative pressure recycling system in production of refractory material by using fusion casting method |
| CN203664088U (en) * | 2014-01-27 | 2014-06-25 | 宁波科鑫腐蚀控制工程有限公司 | Spraying and powder recycling device for epoxy coated steel bars |
| CN213558169U (en) * | 2020-10-09 | 2021-06-29 | 青岛海瑞涂装设备有限公司 | Automatic recovery system that dusts of coating line |
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| CN114192362B (en) | 2023-05-26 |
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