CN112570176B - Compressed air-assisted airless spray-pressure premixing granulation equipment and cementing material spraying system - Google Patents
Compressed air-assisted airless spray-pressure premixing granulation equipment and cementing material spraying system Download PDFInfo
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- CN112570176B CN112570176B CN202011321786.9A CN202011321786A CN112570176B CN 112570176 B CN112570176 B CN 112570176B CN 202011321786 A CN202011321786 A CN 202011321786A CN 112570176 B CN112570176 B CN 112570176B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides compressed air-assisted airless jet pressure premixing granulation equipment and a gelled material spraying system, which are applied to gelled material spraying. The invention improves the granulation effect, the jet density, the conveying distance, the spraying range and the spraying uniformity of the technology from the radial uniformity of the fluid.
Description
Technical Field
The invention relates to the field of cementing material spraying, in particular to compressed air-assisted airless spraying pressure premixing granulation equipment and a cementing material spraying system.
Background
Spraying of liquid materials such as paint by airless spraying pressure has been widely used in domestic and foreign coating industries. The main technical principle is that high-pressure equipment is utilized to apply pressure of more than 10MPa to liquid materials, so that the sprayed materials are subjected to violent impact with air through airless spray pressure spray holes to be directly atomized and sprayed on the surface of a sprayed object. It features that the compressed air does not contact directly with the material to be sprayed, and its jet density is high and atomizing effect is good, but its disadvantages are short jet distance and small conveying range. For the gelled material, the bulk density is large (2-3 tons/cubic meter) and no large-particle aggregate exists, the material is usually stirred and mixed in a fixed stock ground, and the operation area is usually 100-200 meters away from the stock ground, so that the material cannot be directly sprayed by an airless spray pressure technology.
The cementing material is a self-cementing material mainly based on inorganic silicon-aluminum base, the state of the cementing material after being mixed and stirred with water is in a paste form, and the density of the cementing material is 2-3 times of that of a conventional liquid material. When compressed air is used for spraying, the gelled material is easy to generate the problems of uneven spraying, unstable jet flow and the like due to factors such as high viscosity and density of the gelled material.
The traditional compressed air-assisted airless spray pressure technology is characterized in that compressed air is assisted on the basis of airless spray pressure, jet material atomized by airless spray pressure is subjected to assisted injection by the compressed air, and the characteristics of long injection distance and large conveying range are realized on the basis of large jet density and good atomization effect of the airless spray pressure technology. However, when the conventional compressed air-assisted airless spray pressure technology is directly applied to the spraying of the gelled material, the atomization-spraying effect of the liquid material such as paint cannot be realized due to the factors such as high viscosity and high density of the gelled material.
Disclosure of Invention
The invention aims to provide compressed air-assisted airless spray pressure premixing granulation equipment and a cementing material spraying system, and aims to solve the problem that the traditional compressed air-assisted airless spray pressure technology cannot be directly applied to a cementing material to realize atomization-spraying effects.
The invention is realized by the following steps:
on one hand, the invention provides compressed air-assisted airless spray pressure premixing granulation equipment which is applied to spraying of gelled materials and comprises an airless spray pressure device and a compressed air-assisted granulation device, wherein the airless spray pressure device comprises a spray hopper and a hydraulic pumping device connected with the spray hopper through a high-pressure pipeline, the bottom of the spray hopper is connected with an airless spray pressure sleeve head, the bottom of the airless spray pressure sleeve head is provided with a plurality of airless spray pressure spray orifices, the compressed air-assisted granulation device comprises a granulation cavity and an auxiliary air compressor connected with the granulation cavity, the airless spray pressure sleeve head is positioned in the granulation cavity, the granulation cavity is cylindrical, the inner wall of the granulation cavity is provided with oblique-pulling fixed blades, and compressed air in the granulation cavity forms a tangential airflow flow field under the action of the oblique-pulling fixed blades.
Further, a space which is gradually tightened and then gradually released is formed between the airless spray pressure sleeve head and the granulating cavity.
Further, the airless spray pressure sleeve head is in a mushroom top shape.
Furthermore, the airless spray pressure orifices are axially symmetrically and uniformly distributed along the bottom of the airless spray pressure sleeve head.
Furthermore, the inclined pulling fixed blades are uniformly arranged along the circumferential direction of the inner wall of the granulating cavity.
Furthermore, the inclined pulling fixed blades and the central axis of the granulating cavity form an angle of 10-20 degrees.
Further, the inclined pulling fixed blades are perpendicular to the inner wall of the granulating cavity.
Furthermore, the inclined pulling fixed blades are welded on the inner wall of the granulation chamber.
On the other hand, the invention also provides a cementing material spraying system which comprises a screw feeder, a main injection device, a material spraying pipe, a spray head and the compressed air-assisted airless spray pressure premixing granulation equipment, wherein a discharge port of the screw feeder is connected with the injection hopper, the main injection device comprises an injection cavity and a main air compressor connected with the injection cavity, the injection cavity is communicated with the granulation cavity, one end of the material spraying pipe is connected with the tail end of the main injection device, and the other end of the material spraying pipe is connected with the spray head.
Further, the spray chamber is cylindrical.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides compressed air-assisted airless spray pressure premixing granulation equipment and a gelled material spraying system, which utilize an airless spray pressure device to enable gelled materials to form high-density linear jet flow through airless spray pressure, compressed air in a granulation cavity of the compressed air-assisted granulation device forms a tangential airflow flow field under the action of inclined pulling fixed blades, the airless spray pressure high-density linear jet flow is subjected to primary compressed air-assisted shearing granulation, a main injection device takes the compressed air as a power source and conveys the mixed jet flow to a remote operation surface for spray covering operation, uniform injection and conveying of the gelled materials in a paste state can be ensured under the condition of high density and viscosity, and the granulation effect, jet flow density, conveying distance, injection range and spray covering uniformity of the technology can be uniformly improved from the radial direction of fluid.
Drawings
Fig. 1 is a schematic perspective view of a compressed air-assisted non-pneumatic spraying pressure premixing granulation apparatus according to an embodiment of the present invention;
fig. 2 is a schematic plan view of a compressed air-assisted non-pneumatic spraying pre-mixing granulation apparatus according to an embodiment of the present invention.
Description of reference numerals: the device comprises a 1-airless spray pressure device, a 11-spray hopper, a 12-airless spray pressure sleeve head, a 13-airless spray pressure spray hole, a 2-compressed air auxiliary granulation device, a 21-granulation cavity, a 22-inclined pull fixed blade, a 3-main injection device and a 31-injection cavity.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a compressed air-assisted airless spray pressure premixing granulation apparatus, which is applied to spraying of a gelling material, and includes an airless spray pressure device 1 and a compressed air-assisted granulation device 2, where the airless spray pressure device 1 includes a spray hopper 11 and a hydraulic pumping device connected to the spray hopper 11 through a high-pressure pipeline, the bottom of the spray hopper 11 is connected to an airless spray pressure socket 12, and the bottom of the airless spray pressure socket 12 is provided with a plurality of airless spray pressure nozzles 13, where the spray hopper 11 is used for containing a pretreated gelling material, the hydraulic pumping device is used for applying pressure to the gelling material in the spray hopper 11, and the pressurized gelling material forms a high-density continuous linear jet through the plurality of airless spray pressure nozzles 13 at the bottom of the airless spray pressure socket 12. The compressed air auxiliary granulating device 2 comprises a granulating cavity 21 and an auxiliary air compressor connected with the granulating cavity 21, wherein the auxiliary air compressor is used for applying pressure to the granulating cavity 21 to form auxiliary compressed air, the airless spray pressure sleeve head 12 is positioned in the granulating cavity 21, linear cementing materials sprayed out from the airless spray pressure spray holes 13 directly enter the granulating cavity 21, the granulating cavity 21 is cylindrical, inclined-pull fixed blades 22 are arranged on the inner wall of the granulating cavity 21, the compressed air in the granulating cavity 21 forms a tangential airflow flow field under the action of the inclined-pull fixed blades 22, and the linear cementing materials sprayed out from the airless spray pressure spray holes 13 are divided into granules in the radial and tangential shear flow fields of the auxiliary compressed air.
The airless jet pressure device 1 aims to enable a cementing material to form high-density linear jet flow through airless jet pressure, and the airless jet pressure spray holes 13 are axially symmetrically and uniformly distributed along the bottom of the airless jet pressure sleeve 12, so that the uniformity of the jet flow after primary compressed air-assisted granulation is ensured. The compressed air auxiliary granulation device 2 is used for carrying out primary compressed air auxiliary shearing granulation on the airless spray high-density linear jet flow, further ensuring the uniformity of the high-density granulation jet flow and pre-forming uniform compressed air mixed jet flow.
When the device is used, a cementing material enters the airless spray pressure device 1 after being pretreated and spirally fed, a high-density homogeneous fluidized cementing material linear jet flow is formed after being pressurized by the hydraulic pumping device, and the high-density granulated cementing material jet flow is formed by once auxiliary compressed air shearing granulation in the compressed air auxiliary granulation device 2. The jet can be sprayed to the working surface by the main injection device 3 through the main compressed air and along with the material spraying pipe and the spray head.
In the preferred embodiment, a pre-mixing granulation space is formed between the outer wall of the airless spray pressure sleeve 12 and the inner wall of the granulation chamber 21, wherein the pre-mixing granulation space is formed between the airless spray pressure sleeve 12 and the granulation chamber 21, the pre-mixing granulation space is gradually tightened and then gradually released, compressed air in the pre-mixing granulation space is pressurized and then released, a radial shear flow field of the compressed air is generated, and the compressed air passes through the pre-mixing granulation space to form radial shear airflow flow field distribution as shown in fig. 1. In one embodiment, the airless spray head 12 is mushroom-shaped, and forms a pre-mixing granulation space between itself and the cylindrical granulation chamber 21, wherein the pre-mixing granulation space is gradually tightened and then gradually released.
Preferably, the inclined pulling fixed blades 22 are uniformly arranged along the circumferential direction of the inner wall of the granulation chamber 21 to form a uniform radial shear flow field of the compressed air. The inclined pulling fixed blades 22 and the central axis of the granulating cavity 21 form an angle of 10-20 degrees, the inclined pulling fixed blades 22 are welded on the inner wall of the granulating cavity 21 and are vertical to the inner wall of the granulating cavity 21, and compressed air conveyed axially generates a tangential component along the direction of the inclined pulling fixed blades 22 under the turbulent flow effect of the compressed air, so that the tangential component is provided for granulation.
The embodiment of the invention also provides a cementing material spraying system, which comprises a screw feeder, a main injection device 3, a material spraying pipe, a spray nozzle and the compressed air-assisted airless spray pressure premixing granulation equipment, wherein a discharge port of the screw feeder is connected with the spray hopper 11, the main injection device 3 comprises a spray cavity 31 and a main air compressor connected with the spray cavity 31, the main air compressor is used for applying pressure to the spray cavity 31 to form main compressed air to spray the cementing material, the spray cavity 31 is communicated with the granulation cavity 21, the granulated cementing material enters the spray cavity 31 along with the auxiliary compressed air, a high-density granulated cementing material spray flow is finally formed under the action of the main compressed air, one end of the material spraying pipe is connected with the tail end of the main injection device 3, and the other end of the material spraying pipe is connected with the spray nozzle. The pretreated cementing material is sent into a spraying hopper 11 of the airless spray pressure device 1 through a screw feeder, and high-density granulated cementing material spray flow formed in the main spraying device 3 is sprayed out along a spray head through a spray pipe, so that the cementing material is sprayed on a working surface.
Preferably, the injection cavity 31 is cylindrical to axially convey the cement, so that the cement after shearing and granulating is stably output along the main conveying pipe along the spiral conveying track with the compressed air, and in other embodiments, the injection cavity 31 of the main injection device 3 may have other shapes.
The method for spraying the cementing material by using the cementing material spraying system comprises the following steps:
(1) the gelled material is sent into a spraying hopper 11 of the airless spraying device 1; specifically, firstly, the cementing material is pretreated before being sprayed, then a proper amount of the cementing material is sent into a hopper of a screw feeder, and the cementing material is sent into a spraying hopper 11 of the airless spray pressure device 1 through the screw feeding of the screw feeder.
(2) Forming high-density continuous linear jet flow by using the airless spray pressure device 1 and enabling the cementing material to enter the compressed air auxiliary granulation device 2; specifically, the spraying hopper 11 of the airless spraying device 1 is connected with a hydraulic pumping device through a high-pressure pipeline, the hydraulic pumping device is used for applying pressure of more than 5MPa to the cementing material, the cementing material forms high-density continuous linear jet flow through a plurality of airless spraying nozzle holes 13 of the airless spraying device 1, and the formed jet flow directly enters the compressed air auxiliary granulation device 2.
(3) The high-density continuous linear gelled material is cut into granules by a jet flow of a compressed air auxiliary granulating device 2, and the granulated gelled material enters a main injection device 3 along with compressed air; specifically, a jet of auxiliary jet compressed air is introduced into the compressed air auxiliary granulation device 2, and the high-density continuous linear gelled material jet in the auxiliary granulation device is sheared into granules by the rotary cutting force of the compressed air through the flow field of the compressed air. Preferably, the pressure, the flow rate and the cut-in angle of the compressed air can be set to control the sheared granular length of the cementing material.
(4) The main injection device 3 is used for pushing the granulated cementing material to be conveyed for a long distance along with the material spraying pipe and to be sprayed out through the spray head, and the cementing material is sprayed on the working surface. Specifically, a main injection compressed air is introduced into the main injection device 3, the main injection compressed air pushes the auxiliary injection high-density granulated cementing material to be conveyed along with a spray pipe in a long distance, the high-density granulated cementing material subjected to air-free spray pressure, primary compressed air auxiliary shearing granulation and secondary compressed air main injection is output through a spray head, the cementing material is sprayed on a working surface, and the granulated cementing material is uniformly distributed and is far in conveying distance.
In summary, the compressed air-assisted airless spray pressure premixing granulation equipment and the gelled material spraying system provided by the invention utilize the airless spray pressure device 1 to form a high-density linear jet flow by airless spray pressure of the gelled material, compressed air in the granulation cavity 21 of the compressed air-assisted granulation device 2 forms a tangential airflow flow field under the action of the inclined pulling fixed blades 22 to perform primary compressed air-assisted shearing granulation on the airless spray pressure high-density linear jet flow, the main injection device 3 takes the compressed air as a power source to convey the mixed jet flow to a remote working surface, so as to carry out spraying and covering operation, can ensure that the gelled material in a paste state is uniformly sprayed and conveyed under the condition of higher density and viscosity, and the radial uniformity of the fluid improves the granulation effect, the jet density, the conveying distance, the spraying range and the spraying uniformity of the technology.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a supplementary airless spraying pressure of compressed air mixes granulation equipment in advance which is applied to cementitious material spraying which characterized in that: the device comprises an airless jet-compression device and a compressed air auxiliary granulating device, wherein the airless jet-compression device comprises a jet hopper and a hydraulic pumping device connected with the jet hopper through a high-pressure pipeline, the bottom of the jet hopper is connected with an airless jet-compression sleeve head, the bottom of the airless jet-compression sleeve head is provided with a plurality of airless jet-compression spray holes, the compressed air auxiliary granulating device comprises a granulating cavity and an auxiliary air compressor connected with the granulating cavity, the airless jet-compression sleeve head is positioned in the granulating cavity, the granulating cavity is cylindrical, the inner wall of the granulating cavity is provided with oblique-pulling fixed blades, and compressed air in the granulating cavity forms a tangential airflow field under the action of the oblique-pulling fixed blades; and a space which is gradually tightened and then gradually released is formed between the airless spray pressure sleeve head and the granulation cavity so as to generate a compressed air radial shear flow field.
2. The compressed air-assisted airless spray pressure premixing granulation apparatus as claimed in claim 1, wherein: the airless spray pressure sleeve head is in a mushroom top shape.
3. The compressed air-assisted airless spray pressure premixing granulation apparatus of claim 1, wherein: the airless jet pressure orifices are axially symmetrically and uniformly distributed along the bottom of the airless jet pressure sleeve head.
4. The compressed air-assisted airless spray pressure premixing granulation apparatus as claimed in claim 1, wherein: the inclined pulling fixed blades are uniformly arranged along the circumferential direction of the inner wall of the granulating cavity.
5. The compressed air-assisted airless spray pressure premixing granulation apparatus as claimed in claim 1, wherein: the inclined pulling fixed blades and the central axis of the granulating cavity form an angle of 10-20 degrees.
6. The compressed air-assisted airless spray pressure premixing granulation apparatus as claimed in claim 1, wherein: the inclined pulling fixed blades are vertical to the inner wall of the granulation cavity.
7. The compressed air-assisted airless spray pressure premixing granulation apparatus as claimed in claim 1, wherein: the inclined pulling fixed blades are welded on the inner wall of the granulation cavity.
8. The utility model provides a cementitious material spraying system which characterized in that: the compressed air-assisted airless spray pressure premixing granulation equipment comprises a screw feeder, a main injection device, a spray pipe, a spray head and the compressed air-assisted airless spray pressure premixing granulation equipment as claimed in any one of claims 1 to 7, wherein a discharge port of the screw feeder is connected with a spray hopper, the main injection device comprises an injection cavity and a main air compressor connected with the injection cavity, the injection cavity is communicated with the granulation cavity, one end of the spray pipe is connected with the tail end of the main injection device, and the other end of the spray pipe is connected with the spray head.
9. The cement spray system as claimed in claim 8, wherein: the spray chamber is cylindrical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321786.9A CN112570176B (en) | 2020-11-23 | 2020-11-23 | Compressed air-assisted airless spray-pressure premixing granulation equipment and cementing material spraying system |
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| CN202011321786.9A CN112570176B (en) | 2020-11-23 | 2020-11-23 | Compressed air-assisted airless spray-pressure premixing granulation equipment and cementing material spraying system |
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| CN112570176B true CN112570176B (en) | 2022-05-31 |
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| TWI805434B (en) * | 2022-07-05 | 2023-06-11 | 李振城 | Four-fluid atomizing nozzle, six-fluid atomizing nozzle and eight-fluid atomizing nozzle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3423373A1 (en) * | 1983-08-29 | 1985-03-07 | Institut für Getreideverarbeitung im VEB Kombinat Nahrungsmittel und Kaffee, DDR 1505 Bergholz-Rehbrücke | Nozzle for atomising viscous fluids |
| CN105217316A (en) * | 2015-10-19 | 2016-01-06 | 四川大学 | A kind of novel feeder |
| CN110449282A (en) * | 2019-08-14 | 2019-11-15 | 溧阳市盛杰机械有限公司 | A kind of injection apparatus for being surface-treated or painting |
| CN111306959A (en) * | 2020-03-06 | 2020-06-19 | 戴拓 | Steam jet heater |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2214035A (en) * | 1937-08-17 | 1940-09-10 | Vilbiss Co | Spray head |
| DE2628769C2 (en) * | 1976-06-26 | 1982-06-09 | Heinz 6082 Mörfelden-Walldorf Brennecke | Sandblasting device |
| SU1419734A1 (en) * | 1986-11-10 | 1988-08-30 | Г.В. Чирков | Pneumatic atomizer |
| CN1277619C (en) * | 2001-04-13 | 2006-10-04 | 乌里阿·卡萨勒有限公司 | Fluid bed granulation apparatus |
| CN103362533B (en) * | 2013-07-22 | 2015-10-28 | 太原理工大学 | A kind of tapered airflow field atomization jetting device |
| CN108906366A (en) * | 2018-05-30 | 2018-11-30 | 天津市神龙自动化机械股份有限公司 | A kind of cyclic annular atomization oil spraying device of lubricant grease |
-
2020
- 2020-11-23 CN CN202011321786.9A patent/CN112570176B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3423373A1 (en) * | 1983-08-29 | 1985-03-07 | Institut für Getreideverarbeitung im VEB Kombinat Nahrungsmittel und Kaffee, DDR 1505 Bergholz-Rehbrücke | Nozzle for atomising viscous fluids |
| CN105217316A (en) * | 2015-10-19 | 2016-01-06 | 四川大学 | A kind of novel feeder |
| CN110449282A (en) * | 2019-08-14 | 2019-11-15 | 溧阳市盛杰机械有限公司 | A kind of injection apparatus for being surface-treated or painting |
| CN111306959A (en) * | 2020-03-06 | 2020-06-19 | 戴拓 | Steam jet heater |
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