CN114192362B - 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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- CN114192362B CN114192362B CN202111373068.0A CN202111373068A CN114192362B CN 114192362 B CN114192362 B CN 114192362B CN 202111373068 A CN202111373068 A CN 202111373068A CN 114192362 B CN114192362 B CN 114192362B
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- negative pressure
- piston
- accommodating cavity
- material conveying
- recovery device
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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 pipe fitting inner coating negative pressure production equipment, 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 is used for placing pipe fitting workpieces, and the negative pressure device can be communicated with the pipe fitting workpieces in an on-off mode. The invention provides a material recovery device for pipe fitting inner coating negative pressure production equipment, which can not only ensure that the negative pressure state in a negative pressure tank is kept constant and not changed, but also can convey dry powder recovered by 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 is free from powder flying, so that the working environment of workers is ensured, and the environment friendliness 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 of an inner coating of a pipe fitting.
Background
With the development of economy and population increase, water resources in a plurality of areas are in shortage, and the urban drinking water sources are seriously polluted, so that the safety of resident drinking water is threatened. This results in water resource transportation engineering such as south-to-north water transfer. The water resource is transported in a buried pipe mode. The national standards administration committee has made clear regulations on the standards of drinking water, which require that the buried pipes must be safe, nontoxic, corrosion resistant, etc.
In the production process of the buried pipe, a plastic coating corrosion-resistant layer is required on the inner wall, and plastic coating corrosion-resistant layers are required on the inner wall of connecting pieces such as an elbow, a three-way pipe, a straight-through pipe, a flange and the like of the buried pipe. The general traditional way is: taking an elbow as an example, one end of the elbow is plugged by an end cover after heating, anti-corrosion powder is put in, then the other end of the elbow is plugged by the end cover, an operator takes a heat insulation glove, shakes the overturning elbow back and forth, and the powder is melted on the inner wall to form the anti-corrosion inner wall. By adopting the production mode, various defects exist, the main problem is that the powder is seriously wasted, and the powder is easy to fly in the process of loading and unloading, so that the working environment of operators is greatly influenced. Some spray guns are used for spraying, but the dry powder is easy to fly, so that the waste degree is high; and the thickness of the corrosion-resistant inner wall formed in this way is not uniform.
There is thus an urgent need to develop a powder recovery device capable of recovering dry powder with high recovery rate to assist the pipe inner coating production apparatus.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a material recovery device for pipe fitting inner coating negative pressure production equipment, which can not only ensure that the negative pressure state in a negative pressure tank is kept constant and not changed, but also can convey the dry powder recovered by 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 is free from powder flying, so that the working environment of workers is ensured, and the environment friendliness is strong.
In order to achieve the above purpose, the invention provides a material recovery device for pipe fitting inner coating negative pressure production equipment, 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 is used for placing pipe fitting workpieces, and the negative pressure device is communicated with the pipe fitting workpieces in an on-off mode.
As the preferable technical scheme, the material recovery device comprises a piston device and a spiral pushing device, wherein two guide pipes are arranged at the bottom of the piston device and are communicated with the spiral pushing device.
As the 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 at the middle position of the shaft, and the two second piston groups are symmetrically arranged on two sides of the first piston group. Two material conveying and accommodating cavities are formed between the pipe wall and one first piston group and between the pipe wall and two second piston groups, and the two material conveying and accommodating cavities are respectively a first material conveying and accommodating cavity and a second material conveying and accommodating cavity.
As a preferable technical scheme, one end of the shaft is provided with a connecting screw cap, the connecting screw cap is used for connecting with a cylinder, and a stud is arranged between the cylinder and the piston device.
As the preferable technical scheme, spiral pusher includes spiral shell and spiral pushing component, spiral pushing component connects the speed reducer, spiral pusher's discharge end is connected on the fluidized bed.
As the preferable technical scheme, when the first material conveying and accommodating cavity moves to the connection port of the negative pressure tank and the piston device (namely, the discharge port at the bottom of the negative pressure tank), the first material conveying and accommodating cavity is communicated with the negative pressure tank, a negative pressure state is formed in the first material conveying and accommodating cavity, the pressure in the first material conveying and accommodating cavity is equal to the pressure in the negative pressure tank, fluid powder automatically enters the first material conveying and accommodating cavity, and the second material conveying and accommodating cavity is in a normal pressure state.
As the preferable technical scheme, when the second material conveying and accommodating cavity moves to the connection port of the negative pressure tank and the piston device (namely, the discharge port at the bottom of the negative pressure tank), the second material conveying and accommodating cavity is communicated with the negative pressure tank, the negative pressure state is formed in the second material conveying and accommodating cavity, the pressure in the second material conveying and accommodating cavity is equal to the pressure in the negative pressure tank, fluid powder automatically enters the second material conveying and accommodating cavity, the first material conveying and accommodating cavity is in a normal pressure state, the powder in the first material conveying and accommodating cavity falls into a corresponding guide pipe under the action of gravity and enters the spiral pushing device, and the outlet end of the spiral pushing device enters the fluidized bed.
As a preferred embodiment, the first piston group includes at least one piston, and the second piston group includes at least one piston.
As a preferable technical scheme, the first piston group is two pistons, and the second piston group is one piston. As a preferred technical scheme, the method comprises the following steps,
the invention provides a material recovery device for pipe fitting inner coating negative pressure production equipment, which can not only ensure that the negative pressure state in a negative pressure tank is kept constant and not changed, but also can convey dry powder recovered by 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 is free from powder flying, so that the working environment of workers is ensured, and the environment friendliness is strong.
Drawings
FIG. 1 is a schematic view of a material recycling device for pipe fitting inner coating negative pressure production equipment;
FIG. 2 is a schematic view of the construction of the material recovery device of the invention with part of the shell removed for the pipe inner coating negative pressure production equipment;
FIG. 3 is a schematic view of the screw pushing assembly of the present invention;
FIG. 4 is a schematic view of the piston assembly of the present invention;
FIG. 5 is a schematic view of the negative pressure production equipment for the inner coating of the pipe fitting;
FIG. 6 is a schematic view of the construction of the pipe fitting internal coating negative pressure production apparatus of the present invention with a portion of the baffle removed;
1-negative pressure device, 2-material recovery device, 21-piston device, 22-spiral pushing device, 23-piston assembly, 231-axle, 232-first piston group, 233-second piston group, 234-connecting nut, 24-spiral pushing assembly, 25-cylinder, 26-stud, 27-speed reducer, 28-pipe, 29-material conveying accommodation cavity, 291-first material conveying accommodation cavity, 292-second material conveying accommodation cavity, 3-fluidized bed, 4-branch pipe device, 5-first hose connector, 6-first hose, 7-pipe fitting machined part.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 6, the invention provides a material recovery device for pipe internal coating negative pressure production equipment, wherein a feeding end of the material recovery device 2 is connected with a negative pressure device 1, a discharging end of the material recovery device 2 is connected with a fluidized bed 3, a workbench is arranged above the fluidized bed 3 and is used for placing pipe workpieces 7, and the negative pressure device 1 is communicated with the pipe workpieces 7 in an on-off mode.
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 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 to form an anti-corrosion layer on the inner wall of the pipe work piece 7. A small amount of 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 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 are all communicated with the spiral pushing device. The top of the piston device 21 is fastened and connected to the bottom of the negative pressure device 1 by means of flanges, bolts and nuts.
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, and preferably two pistons are arranged; 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 accommodating chambers 29, namely a first material-conveying accommodating chamber 291 and a second material-conveying accommodating chamber 292, are formed between the pipe wall and one first piston group 232 and two second piston groups 233.
The piston assembly 23 is connected with the cylinder 25, specifically, one end of the shaft 231 is provided with a connecting nut 234, the connecting nut 234 is used for connecting with the cylinder 25, and a stud 26 is arranged between the cylinder 25 and the piston device 23.
The screw pushing device 22 comprises a screw shell and a screw pushing assembly 24, and the screw 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 air cylinder 25, and when the first material conveying and accommodating cavity 291 moves to a connection port (namely a discharge port at the bottom of the negative pressure tank) of the negative pressure device 1 and the piston device 21, the first material conveying and accommodating cavity 291 is communicated with the negative pressure device 1, a negative pressure state is formed in the first material conveying and accommodating cavity 291, at the moment, the pressure in the first material conveying and accommodating cavity 291 is equal to the pressure in the negative pressure device 1, and fluid powder automatically enters the first material conveying and accommodating cavity 291, at the moment, the second material conveying and accommodating cavity 292 is in a normal pressure state; along with the driving action of the air cylinder 25, the second material conveying and accommodating cavity 292 moves to the connection port (namely, the discharge port at the bottom of the negative pressure tank) of the negative pressure device 1 and the piston device 21, at this time, the second material conveying and accommodating cavity 292 is communicated with the negative pressure device 1, a negative pressure state is formed in the second material conveying and accommodating cavity 292, at this time, the pressure in the second material conveying and accommodating cavity 292 is equal to the pressure in the negative pressure device 1, fluid powder automatically enters the second material conveying and accommodating cavity 292, at this time, the first material conveying and accommodating cavity 291 is in a normal pressure state, the powder in the first material conveying and accommodating cavity 291 falls into a corresponding guide pipe 28 under the action of gravity and enters the spiral pushing device 22, the outlet end of the spiral pushing device 22 is connected to the fluidized bed 3, and finally the powder enters the fluidized bed 3, so circulation is realized, and recovery of the powder is realized.
The fluidized bed 3 is used for containing dry powder, and after the fluidized bed 3 is filled with air, the dry powder is in a fluid state, so that the fluidized powder 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 pipe fitting inner coating negative pressure production equipment, which can not only ensure that the negative pressure state in a negative pressure tank is kept constant and not changed, but also can convey dry powder recovered by 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 is free from powder flying, so that the working environment of workers is ensured, and the environment friendliness is strong.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The material recovery device for the pipe fitting inner coating negative pressure production equipment is characterized in that a feeding end of the material recovery device (2) is connected with a negative pressure device (1), the negative pressure device (1) comprises a negative pressure tank, a discharging end of the material recovery device (2) is connected with a fluidized bed (3), a workbench is arranged above the fluidized bed (3) and is used for placing a pipe fitting machined part (7), and the negative pressure device (1) is communicated with the pipe fitting machined part (7) in an on-off mode;
the material recovery device (2) comprises a piston device (21) and a spiral pushing device (22), two guide pipes (28) are arranged at the bottom of the piston device (21) and are communicated with the spiral pushing device (22), and the discharge end of the spiral pushing device (22) is connected to the fluidized bed (3);
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), the first piston group (232) is arranged at the middle position of the shaft (231), and the two second piston groups (233) are symmetrically arranged at two sides of the first piston group (232);
two material conveying and accommodating cavities (29) are formed between the pipe wall and one first piston group (232) and two second piston groups (233), namely a first material conveying and accommodating cavity (291) and a second material conveying and accommodating cavity (292) respectively;
when the first material conveying and accommodating cavity (291) moves to a connecting port of the negative pressure tank and the piston device (21), the first material conveying and accommodating cavity (291) is communicated with the negative pressure device (1), a negative pressure state is formed in the first material conveying and accommodating cavity (291), the pressure in the first material conveying and accommodating cavity (291) is equal to the pressure in the negative pressure device (1), fluid powder automatically enters the first material conveying and accommodating cavity (291), and the second material conveying and accommodating cavity (292) is in a normal pressure state;
when the second material conveying and accommodating cavity (292) moves to the connecting port of the negative pressure tank and the piston device (21), the second material conveying and accommodating cavity (292) is communicated with the negative pressure device (1), a negative pressure state is formed in the second material conveying and accommodating cavity (292), the pressure in the second material conveying and accommodating cavity (292) is equal to the pressure in the negative pressure device (1), fluid powder automatically enters the second material conveying and accommodating cavity (292), the first material conveying and accommodating cavity (291) is in a normal pressure state, the powder in the first material conveying and accommodating cavity (291) falls into a corresponding guide pipe (28) under the action of gravity, and enters the spiral pushing device (22), and the outlet end of the spiral pushing device (22) enters the fluidized bed (3).
2. A material recovery device for a pipe fitting inner coating negative pressure production device according to claim 1, characterized in that 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 (21).
3. A material recovery device for a pipe fitting inner coating negative pressure production apparatus according to claim 1, wherein the screw pushing device (22) comprises a screw housing and a screw pushing assembly (24), and the screw pushing assembly (24) is connected with a speed reducer (27).
4. A material recovery device for a pipe inner coating negative pressure production apparatus according to claim 3, characterized in that the first piston group (232) comprises at least one piston and the second piston group (233) comprises at least one piston.
5. The material recovery device for a pipe inner coating negative pressure production apparatus according to claim 4, 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114192362A CN114192362A (en) | 2022-03-18 |
| CN114192362B true CN114192362B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111373068.0A Active CN114192362B (en) | 2021-11-19 | 2021-11-19 | Material recovery device for pipe fitting inner coating negative pressure production equipment |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL123054C (en) * | 1962-10-10 | |||
| 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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2021
- 2021-11-19 CN CN202111373068.0A patent/CN114192362B/en active Active
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| CN114192362A (en) | 2022-03-18 |
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