CN111841350A - Foam generator for decontamination foam - Google Patents
Foam generator for decontamination foam Download PDFInfo
- Publication number
- CN111841350A CN111841350A CN202010488324.XA CN202010488324A CN111841350A CN 111841350 A CN111841350 A CN 111841350A CN 202010488324 A CN202010488324 A CN 202010488324A CN 111841350 A CN111841350 A CN 111841350A
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- CN
- China
- Prior art keywords
- foam
- jet
- liquid
- foam generator
- pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/27—Mixing by jetting components into a conduit for agitating its contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/28—Jet mixers, i.e. mixers using high-speed fluid streams characterised by the specific design of the jet injector
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
- B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
- B01F35/531—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/003—Cleaning involving contact with foam
Abstract
The invention provides a foam generator for decontamination foam, which comprises a foam generator main body structure, a liquid-phase jet assembly and a jet baffle assembly, wherein the liquid-phase jet assembly comprises a liquid-phase jet pipe and a liquid-phase jet pipe; the liquid phase efflux subassembly in the foam generator of this scheme can realize carrying out the regulation that corresponds to jet distance through rotatory back lid, and whole regulation operation process is convenient simple and fast, in addition through the design to the efflux baffle, can be so that the efflux baffle can block the efflux of spouting from liquid phase efflux subassembly completely to make it fully dispersed in the gaseous phase, and then can guarantee the quality of decontamination foam.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a foam generator for decontamination foam.
Background
The foam decontamination technology is one of effective methods for primary decontamination of large-volume cavity equipment, is mainly applied to removal of loose pollutants before dismantling of systems and equipment, and aims to reduce occupational irradiation of dismantling operation and reduce the possibility of pollutant diffusion. Compared with the technology for directly soaking and decontaminating by using acid and alkali, the technology has the advantages of low decontaminating agent consumption, high decontaminating efficiency and low secondary waste liquid amount, and is particularly suitable for decontaminating large-volume cavity polluted equipment with complicated shapes.
The key equipment in the foam decontamination technology is a foam generator which mainly has the function of providing a larger gas-liquid contact interface to fully mix gas and liquid so as to generate foam. The foam generator directly affects the quality of foam, such as the shape, size, particle size uniformity, foaming ratio, etc.
For the foam decontamination technology, the foam generated by the foam generator is required to have a longer foam half-life period and a longer liquid holding half-life period, the generated foam is fine and compact, and has a higher foaming rate, so that the foam generator can be conveniently installed on site, and the application requirement of a complex scene is met.
At present, foam generators at home and abroad are in various forms and structures. Each type of foam generator has its own advantages and disadvantages in facilitating adequate mixing of the gas and liquid phases and generating foam. For the foam decontamination technology, an aeration pipe used by an aeration type foam generator belongs to a mature industrial product, but the aeration pipe must be placed at the bottom of a tank when in use, so that the problems of arrangement and placement are caused; the dependence of the filler type foam generator and the jet flow filler type foam generator on the filler is high, the device is easy to block, and the effect is not good in the actual decontamination application process.
Therefore, it is very important to find a foam generator structure which can generate high-quality decontamination foam, realize decontamination of loose contamination in large-volume and complex-shaped cavity contamination equipment, effectively reduce occupational irradiation and reduce diffusion of pollutants.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a foam generator for decontamination foam, which can generate decontamination foam with excellent quality so as to realize decontamination of loose contamination in large-volume cavity contamination equipment with complex shapes.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a foam generator for decontaminating foam, the foam generator comprising:
the foam generator comprises a foam generator main body structure, wherein the foam generator main body structure adopts a tee joint, and the tee joint comprises a gas phase inlet, a liquid phase jet assembly connecting port and a jet baffle assembly connecting port;
the liquid phase jet assembly comprises a nozzle, a liquid inlet pipe, a rear cover and a rear sleeve, one end of the rear sleeve is fixedly connected with a liquid phase jet assembly connecting port on the tee joint in a threaded manner, the rear cover is installed on the outer end face of the other end of the rear sleeve in a threaded manner, the front end of the liquid inlet pipe horizontally extends into the inner cavity of the rear sleeve, the nozzle is installed on the front end of the liquid inlet pipe in a threaded manner, the rear end of the liquid inlet pipe is connected with an external foaming agent delivery pump, and the liquid inlet pipe is fixedly connected with the rear cover;
And the jet flow baffle plate assembly comprises a front pipe and a jet flow baffle plate, the rear end of the front pipe is communicated with the foam outlet, the jet flow baffle plate is obliquely and downwards arranged in the inner cavity of the front pipe, and the jet flow baffle plate and the pipe wall of the front pipe, which is adjacent to the rear end of the front pipe, form an included angle smaller than 90 degrees.
Further, the rear sleeve can be replaced by a rear sleeve structure with different lengths.
Furthermore, the jet flow baffle plate and the liquid inlet pipe are made of the same material.
Furthermore, the nozzle adopts a liquid column flow-shaped nozzle structure made of stainless steel materials.
Furthermore, the liquid inlet pipe, the tee joint, the rear cover, the rear sleeve, the front pipe and the jet flow baffle are made of organic glass.
Its advantage of movable decontamination foam generating device in this scheme lies in: the liquid phase efflux subassembly in the foam generator of this scheme can realize carrying out the regulation that corresponds to jet distance through rotatory back lid, and whole regulation operation process is convenient simple and fast, in addition through the design to the efflux baffle, can be so that the efflux baffle can block the efflux of spouting from liquid phase efflux subassembly completely to make it fully dispersed in the gaseous phase, and then can guarantee the quality of decontamination foam.
Drawings
FIG. 1 is a schematic structural diagram of a main body of a baffle jet type foam generator in the present invention.
FIG. 2 is a schematic structural diagram of a liquid-phase jet assembly of the baffle jet foam generator of the present invention.
FIG. 3 is a schematic view of the baffle jet foam generator jet baffle assembly of the present invention.
FIG. 4 is a schematic view of the assembly structure of the baffle jet foam generator of the present invention.
In the figure:
1-gas phase inlet, 2-liquid phase jet component connecting port, 3-jet baffle component connecting port, 4-nozzle, 5-rear sleeve, 6-rear cover, 7-foam liquid inlet pipe, 8-front pipe, 9-jet baffle and 10-foam outlet.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Referring to fig. 1 to 4, the present embodiment provides a foam generator for decontaminating foam comprising a foam generator body structure, a liquid phase jet assembly and a jet baffle assembly. The main structure of the foam generator adopts a three-way structure form, and the three-way structure comprises a gas phase inlet 1, a liquid phase jet flow component connecting port 2 and a jet flow baffle plate component connecting port 3.
The gas inlet 1 is arranged above the tee joint, the gas inlet pipe adopts a tower type interface form, so that the gas pipe can be conveniently connected, and the gas pipe can be fixed through a hoop after being connected. Liquid phase fluidic component connector 2 mainly is connected with the liquid phase fluidic component, and liquid phase fluidic component connector 2 department is provided with the screw thread among the major structure, and the two realizes fastening through the screw thread and links to each other, convenient dismantlement.
Referring to fig. 2 and 4 in combination, the liquid phase jet assembly mainly comprises a nozzle 4, a liquid inlet pipe, a rear cover 6 and a rear sleeve 5. The nozzle 4 can spray the foaming agent in a jet flow mode, and the nozzle 4 has the characteristics of circular spray holes, large and smooth flow channels, no blockage, capability of generating liquid flow with high impact force and the like. Preferably, the nozzle 4 is a liquid column manifold nozzle made of stainless steel.
The liquid inlet pipe is used for receiving the foaming agent from the foaming agent delivery pump and ensuring the sealing of the liquid phase through operation. Considering the convenience of replacing the nozzle 4 and connecting the pipelines, the front end of the liquid inlet pipe and the nozzle 4 in the embodiment are in threaded connection, the rear end interface is a tower-shaped interface and is fixed with an external liquid supply hose by a metal hoop, and the liquid inlet pipe and the rear cover 6 are fixed in a bonding mode.
The rear cover 6 and the rear sleeve 5 in the embodiment adopt a threaded connection mode, and the liquid inlet pipe and the rear cover 6 are fixed in a bonding mode, so that the change of the spraying distance can be achieved by mainly rotating the rear cover 6 when the spraying distance is adjusted.
In the design of the rear sleeve 5, the front end of the rear sleeve is in threaded connection with the three-way liquid-phase jet assembly connecting port 2, and the rear end of the rear sleeve is in threaded connection with the rear cover 6. In view of the convenience of the rear sleeve 5 and the adjustment of the injection distance, several rear sleeves 5 of different lengths may be used in practice, so that two different injection distances can be adjusted for each rear sleeve 5 during the adjustment of the injection distance.
Referring to figures 3 and 4 in combination, the jet baffle assembly in this embodiment comprises a head tube 8 and a jet baffle 9.
The front pipe 8 plays a role of supporting the jet baffle 9 and providing a foam outlet 10, and in consideration of the convenience of replacement, the rear end of the front pipe 8 is connected with the jet baffle component connecting port 3 of the tee joint in a threaded manner.
The function of the jet baffle 9 is to make the jet fully disperse downwards in the gas flow and generate foam, and at the same time, to form a barrier to the gas phase introduced into the foam generator from the gas phase inlet 1, so as to promote the entrainment of the gas phase by the jet and further to make the jet fully disperse. The jet baffle 9 in the embodiment adopts an arc design, so that the jet baffle 9 is completely embedded into the inner wall of the front pipe 8 at a certain angle and is bonded and fixed, the jet baffle 9 can completely block jet flow ejected from the liquid-phase jet flow assembly, and the jet flow is fully dispersed in a gas phase. Specifically, the jet baffle 9 forms an included angle of less than 90 degrees with the inner cavity of the front pipe 8 adjacent to the pipe wall at the rear end thereof.
In addition, the baffle efflux formula foam generator in this embodiment, its complete equipment except that nozzle 4 all adopts the organic glass to make and forms, and feed liquor pipe, tee bend, back lid 6, back sleeve pipe 5, front tube 8 and efflux baffle 9 all adopt the organic glass to make and form promptly. By using organic glass, the whole generator is convenient to observe and is also suitable for different foaming agents such as acid foaming agent, alkaline foaming agent and the like.
In the test process, the liquid-phase jet assembly connecting port 2 in the main body structure is assembled with the liquid-phase jet assembly by using the thread main body structure. Similarly, the main structure and the jet baffle component are assembled together by screw threads through the jet baffle component connecting port 3 in the main structure.
The gas pipe is connected with the main structure through a tower-shaped interface of a gas phase inlet 1 in the main structure, and the joint is reinforced by adopting a metal hoop.
And connecting an external liquid supply hose with the liquid phase jet assembly through a tower-shaped interface at the rear end of a foam liquid inlet pipe 7 in the liquid phase jet assembly, and reinforcing the joint by adopting a metal hoop.
By rotating the back cover 6, the back cover 6 can be moved left and right on the back sleeve 5 to further adjust the distance between the nozzle 4 and the jet baffle 9 in the jet baffle assembly. The distance between the nozzle 4 and the jet baffle 9 was adjusted to 60mm in this example by measurement.
The compressed air source is opened, and the flow rate is adjusted to 20m3H; a foaming agent delivery pump for adjusting the liquid phase flow to 1m3H is used as the reference value. In the baffle jet type foam generator, a gas phase is introduced into a horizontal pipe after being compressed from a gas phase inlet 1, and a liquid phase is sprayed onto a jet baffle 9 with an inclination angle of 45 degrees from a jet device nozzle 4 in a jet mode, is fully dispersed in the gas phase to generate foam, and flows out from a foam outlet 10. The jet baffle 9 causes the jet to be well dispersed and foam-formed down in the gas phase while forming a barrier to the gas phase introduced into the horizontal tube, thereby promoting entrainment of gas by the jet.
And collecting the generated foam by using a measuring cylinder, recording the height change of the foam generated in different time, recording the foam height and the liquid level height every 10min in the first hour after stopping foam generation, and recording the foam height and the liquid level height every 15min after one hour.
See table one below, which is a test result of the baffle jet foam generator performance. In Table I, the foaming ratio is the volume of foam produced per unit volume of the foaming agent at the time of stopping foaming. The foaming speed is the amount of foam generated per unit time. The liquid holding half-life is the time taken for half of the liquid carried by the foam to reflux when foaming is stopped. The foam half-life is the time it takes for the foam to fade half-way when foaming ceases.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (5)
1. A foam generator for decontaminating foam, the foam generator comprising:
The foam generator comprises a foam generator main body structure, wherein the foam generator main body structure adopts a tee joint, and the tee joint comprises a gas phase inlet, a liquid phase jet assembly connecting port and a jet baffle assembly connecting port;
the liquid phase jet assembly comprises a nozzle, a liquid inlet pipe, a rear cover and a rear sleeve, one end of the rear sleeve is fixedly connected with a liquid phase jet assembly connecting port on the tee joint in a threaded manner, the rear cover is installed on the outer end face of the other end of the rear sleeve in a threaded manner, the front end of the liquid inlet pipe horizontally extends into the inner cavity of the rear sleeve, the nozzle is installed on the front end of the liquid inlet pipe in a threaded manner, the rear end of the liquid inlet pipe is connected with an external foaming agent delivery pump, and the liquid inlet pipe is fixedly connected with the rear cover;
and the jet flow baffle plate assembly comprises a front pipe and a jet flow baffle plate, the rear end of the front pipe is communicated with the foam outlet, the jet flow baffle plate is obliquely and downwards arranged in the inner cavity of the front pipe, and the jet flow baffle plate and the pipe wall of the front pipe, which is adjacent to the rear end of the front pipe, form an included angle smaller than 90 degrees.
2. A foam generator for a decontaminating foam according to claim 1, wherein said rear sleeve is replaceable with a rear sleeve structure of different length.
3. The foam generator for decontaminating foam of claim 1 or 2, wherein the jet baffle and the liquid inlet pipe are made of the same material.
4. A foam generator for decontaminating foam according to claim 1 or 2, wherein the nozzle is a liquid column flow nozzle arrangement of stainless steel material.
5. The foam generator for decontaminating foam of claim 1 or 2, wherein the liquid inlet pipe, tee, rear cover, rear sleeve, front pipe and jet baffle are made of plexiglas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010488324.XA CN111841350A (en) | 2020-06-02 | 2020-06-02 | Foam generator for decontamination foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010488324.XA CN111841350A (en) | 2020-06-02 | 2020-06-02 | Foam generator for decontamination foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111841350A true CN111841350A (en) | 2020-10-30 |
Family
ID=72985435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010488324.XA Pending CN111841350A (en) | 2020-06-02 | 2020-06-02 | Foam generator for decontamination foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111841350A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915826A (en) * | 2021-02-05 | 2021-06-08 | 芜湖美的厨卫电器制造有限公司 | Dissolve gas pitcher and water heater |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918647A (en) * | 1974-01-14 | 1975-11-11 | Chemtrust Ind Corp | Foam generating apparatus |
| EP1426500A1 (en) * | 2002-12-06 | 2004-06-09 | Detlev Frahm | Foaming unit for producing foam for foam-baths and free applications |
| CN201020350Y (en) * | 2007-04-12 | 2008-02-13 | 大庆摩恩达工程有限公司 | Adjustable ejector |
| CN201269664Y (en) * | 2008-08-27 | 2009-07-08 | 太原中绿节能技术有限公司 | Nozzle-adjustable ejection apparatus |
| CN103041723A (en) * | 2011-10-17 | 2013-04-17 | 曾永芳 | Micro-bubble generation device |
| CN203096556U (en) * | 2013-03-13 | 2013-07-31 | 山东省路桥集团有限公司 | Asphalt foaming device |
| CN105521720A (en) * | 2015-12-21 | 2016-04-27 | 西安石油大学 | Foam generator |
| US20190060846A1 (en) * | 2017-08-22 | 2019-02-28 | Ching-Yuan Juan | Micro-bubble generator |
-
2020
- 2020-06-02 CN CN202010488324.XA patent/CN111841350A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918647A (en) * | 1974-01-14 | 1975-11-11 | Chemtrust Ind Corp | Foam generating apparatus |
| EP1426500A1 (en) * | 2002-12-06 | 2004-06-09 | Detlev Frahm | Foaming unit for producing foam for foam-baths and free applications |
| CN201020350Y (en) * | 2007-04-12 | 2008-02-13 | 大庆摩恩达工程有限公司 | Adjustable ejector |
| CN201269664Y (en) * | 2008-08-27 | 2009-07-08 | 太原中绿节能技术有限公司 | Nozzle-adjustable ejection apparatus |
| CN103041723A (en) * | 2011-10-17 | 2013-04-17 | 曾永芳 | Micro-bubble generation device |
| CN203096556U (en) * | 2013-03-13 | 2013-07-31 | 山东省路桥集团有限公司 | Asphalt foaming device |
| CN105521720A (en) * | 2015-12-21 | 2016-04-27 | 西安石油大学 | Foam generator |
| US20190060846A1 (en) * | 2017-08-22 | 2019-02-28 | Ching-Yuan Juan | Micro-bubble generator |
Non-Patent Citations (1)
| Title |
|---|
| 梁宇等: ""挡板射流式泡沫"", 《辐射防护通讯》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915826A (en) * | 2021-02-05 | 2021-06-08 | 芜湖美的厨卫电器制造有限公司 | Dissolve gas pitcher and water heater |
| CN112915826B (en) * | 2021-02-05 | 2023-09-12 | 芜湖美的厨卫电器制造有限公司 | Dissolved air tank and water heater |
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