CN108789777B - Pressure filling foam device and method for hollow material - Google Patents

Pressure filling foam device and method for hollow material Download PDF

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Publication number
CN108789777B
CN108789777B CN201810788668.5A CN201810788668A CN108789777B CN 108789777 B CN108789777 B CN 108789777B CN 201810788668 A CN201810788668 A CN 201810788668A CN 108789777 B CN108789777 B CN 108789777B
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China
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pressure
foam
foaming
pressure filling
valve
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CN108789777A (en
Inventor
陈达
张研
孔梦婕
陈诗佳
路珂华
梁云超
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Hohai University HHU
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Hohai University HHU
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/50Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete

Abstract

The invention discloses a pressure filling foam device for hollow materials, which comprises a foaming liquid device, a high-pressure air conveying device, a foaming cavity, a pressure filling device and a controller, wherein the foaming liquid device is connected with the high-pressure air conveying device through a pipeline; the foaming liquid device and the high-pressure air conveying device are respectively connected with the foaming cavity; the pressure filling device comprises a pressure filling tank, an exhaust valve arranged at the top of the pressure filling tank and a pressure acquisition device arranged at the top of the side surface of the pressure filling tank; the foam outlet of the foaming cavity is communicated with the foam inlet of the pressure filling tank through a pipeline; a flow meter and a foam valve are sequentially arranged on a pipeline for communicating the foaming cavity with the pressure filling tank; the controller is respectively in signal connection with the foam valve, the exhaust valve, the pressure acquisition device and the flowmeter. The invention also provides a method of pressure filling foam. The whole control process is simple and convenient to operate, the foam valve and the exhaust valve are automatically adjusted by monitoring the pressure and the flow on line, the manual operation intensity and the influence of human factors are reduced, and the foam filling of the air material is ensured to be full and uniform.

Description

Pressure filling foam device and method for hollow material
Technical Field
The invention relates to the field of building construction, in particular to a pressure filling foam device and method for a hollow material.
Background
The hollow materials, such as sintered hollow bricks, hollow ceramsite and the like, have certain communicated gaps inside, so that the hollow materials have light self weight and low heat conductivity coefficient, and are widely applied to energy-saving buildings. However, these hollow materials also have certain disadvantages, such as poor compactness of the materials due to the existence of the communication gaps, and increased heat conductivity due to air flow caused by the existence of the communication gaps, thereby reducing the heat-insulating and energy-saving effects.
In order to improve the defects of the hollow material, the foam can be filled in the internal gap of the hollow material, so that the effect of increasing the overall compactness is achieved, the flow of air in the internal gap can be further reduced, and the thermal conductivity coefficient of the material is reduced.
However, at present, no convenient and effective device and technical method for filling foam into the hollow material exist, so that the high-performance foam-filled hollow material is difficult to be applied in engineering on a large scale.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a pressure filling foam device and method for a hollow material, which have the advantages of simple and convenient filling mode, easy control, full and uniform foam filling and good effect.
In order to achieve the above object, the present invention adopts the following technical solutions: a pressure filling foam device for hollow materials comprises a foaming liquid device, a high-pressure air conveying device, a foaming cavity, a pressure filling device and a controller; the foaming liquid device and the high-pressure air conveying device are respectively connected with the foaming cavity through pipelines; the pressure filling device comprises a pressure filling tank, an exhaust valve arranged at an exhaust port at the top of the pressure filling tank and a pressure acquisition device arranged at the top of the side surface of the pressure filling tank; the foam outlet of the foaming cavity is communicated with the foam inlet of the pressure filling tank through a pipeline; a flow meter and a foam valve are sequentially arranged on a pipeline for communicating the foaming cavity with the pressure filling tank; the output end of the controller is respectively in signal connection with the input ends of the foam valve and the exhaust valve, and the input end of the controller is respectively in signal connection with the output ends of the pressure acquisition device and the flowmeter.
Preferably, the foaming liquid device comprises a foaming liquid tank and a constant-flow constant-pressure foaming liquid pump, and the constant-flow constant-pressure foaming liquid pump is connected with the foaming cavity.
Preferably, the high-pressure air conveying device comprises a high-pressure air compressor and an air storage tank, an outlet of the high-pressure air compressor is communicated with an inlet of the air storage tank, and an outlet of the air storage tank is communicated with an air inlet of the foaming cavity through a pipeline.
Preferably, a barometer is arranged on the air storage tank, and an air valve is arranged on a pipeline which communicates the air storage tank with the foaming cavity.
Preferably, the foam inlet is provided at the bottom of the pressure-filled tank.
Preferably, the controller is a PID controller.
Preferably, the pressure acquisition device is a pressure sensor.
A method for pressure filling foam using a device as described above, comprising the steps of:
(1) preparing materials: inputting a foaming agent into a foaming liquid box, and putting a hollow material to be filled with foam into a pressure filling tank;
(2) foaming: the high-pressure air compressor outputs compressed air to the foaming cavity, the constant-flow constant-pressure foaming liquid pump outputs foaming liquid to the foaming cavity, and the foaming liquid and the compressed air are mixed and foamed in the foaming cavity to generate foam;
(3) filling: the generated foam enters the pressure filling tank through the foam valve, and the controller controls the opening and closing of the foam valve and the exhaust valve to ensure that the pressure in the pressure filling tank is maintained stable, and the foam is filled into the gap of the hollow material under the preset pressure.
The invention has the advantages that: because the controller is respectively in signal connection with the flowmeter, the pressure acquisition device, the foam valve and the exhaust valve, the whole control process is simple and convenient to operate, the pressure and the flow are monitored on line, the foam valve and the exhaust valve are automatically adjusted to be opened and closed according to a monitoring result, the manual operation intensity and the influence of human factors are reduced, the scale is controllable, the foam filling of the air material is ensured to be full and uniform, and the effect is good.
Drawings
FIG. 1 is a schematic diagram of the construction of a pressure filled foam unit of the present invention, wherein solid lines represent tubing connections and dashed lines represent signal connections.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in figure 1, the pressure filling foam device for the hollow material comprises a foaming liquid device, a high-pressure air conveying device, a foaming cavity, a pressure filling device and a controller.
The foaming liquid device comprises a foaming liquid box and a constant-current constant-pressure foaming liquid pump, and the constant-current constant-pressure foaming liquid pump is connected with the liquid inlet of the foaming cavity.
The high-pressure air conveying device comprises a high-pressure air compressor and an air storage tank, wherein an outlet of the high-pressure air compressor is communicated with an inlet of the air storage tank, and an outlet of the air storage tank is communicated with an air inlet of the foaming cavity through a pipeline. The air storage tank is provided with a barometer, and the pipeline of the air storage tank communicated with the foaming cavity is provided with an air valve.
The pressure filling device comprises a pressure filling tank, an exhaust valve arranged at an exhaust port at the top of the pressure filling tank and a pressure acquisition device arranged at the top of the side surface of the pressure filling tank, wherein the pressure acquisition device is a pressure sensor.
The foam outlet of the foaming cavity is communicated with the foam inlet of the pressure filling tank through a pipeline, and a flowmeter and a foam valve are sequentially arranged on the pipeline through which the foaming cavity is communicated with the pressure filling tank. The foam inlet is arranged at the bottom of the pressure filling tank to ensure that the foam can discharge the redundant air in the filling tank in the process of entering the pressure filling tank.
The output end of the controller is respectively connected with the input ends of the foam valve and the exhaust valve, the input end of the controller is respectively connected with the output ends of the pressure acquisition device and the flowmeter, wherein the foam valve and the exhaust valve are high-precision electric regulating valves, the controller can be any suitable controller, and in the specific embodiment of the invention, the controller is a PID controller. The controller controls the opening and closing of the foam valve and the exhaust valve through a cable and receives data information collected by the flowmeter and the pressure collecting device.
A method for pressure filling foam using a device as described above, comprising the steps of:
(1) preparing materials: inputting a certain amount of foaming agent into a foaming liquid box, and putting hollow materials (such as hollow bricks, hollow ceramic granules and the like) to be filled with foam into a pressure filling tank;
(2) foaming: the high-pressure air compressor outputs compressed air to the foaming cavity, the constant-flow constant-pressure foaming liquid pump stably outputs foaming liquid to the foaming cavity, and the foaming liquid and the compressed air are mixed and foamed in the foaming cavity to generate foam;
(3) filling: at the beginning, the controller controls the foam valve and the exhaust valve to be opened simultaneously, air in the pressure filling tank is exhausted from the exhaust valve, and simultaneously foam flows into the pressure filling tank through the pipeline and fills the pressure filling tank gradually; when the flowmeter displays that the total flow of the foam reaches a set total flow value, the foam valve is kept in an open state, and the controller controls the exhaust valve to close to perform pressure filling of the foam; when the pressure value acquired by the pressure acquisition device in real time reaches a set pressure value, controlling the foam input amount to keep the pressure in the pressure filling tank within a certain range, and keeping the pressure filling for 5 minutes to ensure that the foam gradually enters the gap of the hollow material and is filled under the action of the pressure.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims (8)

1. A pressure filling foam device for hollow materials is characterized by comprising a foaming liquid device, a high-pressure air conveying device, a foaming cavity, a pressure filling device and a controller; the foaming liquid device and the high-pressure air conveying device are respectively connected with the foaming cavity through pipelines; the pressure filling device comprises a pressure filling tank, an exhaust valve arranged at an exhaust port at the top of the pressure filling tank and a pressure acquisition device arranged at the top of the side surface of the pressure filling tank; the foam outlet of the foaming cavity is communicated with the foam inlet of the pressure filling tank through a pipeline; a flow meter and a foam valve are sequentially arranged on a pipeline for communicating the foaming cavity with the pressure filling tank; the output end of the controller is respectively in signal connection with the input ends of the foam valve and the exhaust valve, and the input end of the controller is respectively in signal connection with the output ends of the pressure acquisition device and the flowmeter;
a method of pressure filling a foam comprising: at the beginning, the controller controls the foam valve and the exhaust valve to be opened simultaneously, air in the pressure filling tank is exhausted from the exhaust valve, and simultaneously foam flows into the pressure filling tank through the pipeline and fills the pressure filling tank gradually; when the flowmeter displays that the total flow of the foam reaches a set total flow value, the foam valve is kept in an open state, and the controller controls the exhaust valve to close to perform pressure filling of the foam; when the pressure value acquired by the pressure acquisition device in real time reaches a set pressure value, the foam input quantity is controlled, so that the pressure in the pressure filling tank is kept within a certain range, the pressure filling is kept, and the foam gradually enters the gap of the hollow material under the action of the pressure and is filled.
2. A pressure filling foam device for hollow materials according to claim 1, wherein the foam liquid device comprises a foam liquid tank and a constant-flow constant-pressure foam liquid pump, and the constant-flow constant-pressure foam liquid pump is connected with the foam cavity.
3. A pressure filled foam unit for hollow materials according to claim 1 wherein the high pressure air delivery means comprises a high pressure air compressor and an air reservoir, the outlet of the high pressure air compressor communicating with the inlet of the air reservoir, the outlet of the air reservoir communicating with the air inlet of the foaming chamber via a conduit.
4. A pressure filling foam device for hollow materials according to claim 3 wherein a barometer is mounted on the air reservoir and an air valve is mounted on the conduit connecting the air reservoir to the foaming chamber.
5. A pressure filled foam device for hollow materials according to claim 1 wherein the foam inlet is provided at the bottom of the pressure filled tank.
6. A pressure filled foam device for hollow materials according to claim 1 wherein the controller is a PID controller.
7. A pressure filled foam device for hollow materials according to claim 1 wherein the pressure acquisition device is a pressure transducer.
8. A method for pressure filling foam using a device according to any of claims 1 to 7, comprising the steps of:
(1) preparing materials: inputting a foaming agent into a foaming liquid box, and putting a hollow material to be filled with foam into a pressure filling tank;
(2) foaming: the high-pressure air compressor outputs compressed air to the foaming cavity, the constant-flow constant-pressure foaming liquid pump outputs foaming liquid to the foaming cavity, and the foaming liquid and the compressed air are mixed and foamed in the foaming cavity to generate foam;
(3) filling: the generated foam enters the pressure filling tank through the foam valve, and the controller controls the opening and closing of the foam valve and the exhaust valve to ensure that the pressure in the pressure filling tank is maintained stable, and the foam is filled into the gap of the hollow material under the preset pressure.
CN201810788668.5A 2018-07-18 2018-07-18 Pressure filling foam device and method for hollow material Active CN108789777B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810788668.5A CN108789777B (en) 2018-07-18 2018-07-18 Pressure filling foam device and method for hollow material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810788668.5A CN108789777B (en) 2018-07-18 2018-07-18 Pressure filling foam device and method for hollow material

Publications (2)

Publication Number Publication Date
CN108789777A CN108789777A (en) 2018-11-13
CN108789777B true CN108789777B (en) 2020-11-10

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Application Number Title Priority Date Filing Date
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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07331614A (en) * 1994-06-14 1995-12-19 Gifu Plast Ind Co Ltd Buried form body for bridge girder
CN1724231A (en) * 2004-07-19 2006-01-25 牛宁民 Mechanical equipment for foam concrete brick and section bar
CN100413663C (en) * 2005-05-09 2008-08-27 许连科 Concrete member with embedded filling and its production process
CN102642250A (en) * 2012-04-28 2012-08-22 广东冠生土木工程技术有限公司 Method and device for dilution foaming of physical foaming agent
CN105484754B (en) * 2015-12-22 2017-12-08 上海隧道工程有限公司 A kind of modular shield foaming system
CN107042573A (en) * 2017-05-19 2017-08-15 浙江工业大学 The preparation method and preparation facilities of a kind of pressure filled type ceramsite foam concrete

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