CN115350830B - Multi-medium self-check self-mixing spray gun and application method thereof - Google Patents
Multi-medium self-check self-mixing spray gun and application method thereof Download PDFInfo
- Publication number
- CN115350830B CN115350830B CN202211023339.4A CN202211023339A CN115350830B CN 115350830 B CN115350830 B CN 115350830B CN 202211023339 A CN202211023339 A CN 202211023339A CN 115350830 B CN115350830 B CN 115350830B
- Authority
- CN
- China
- Prior art keywords
- flow
- medium conveying
- rate
- spray gun
- rate medium
- Prior art date
- 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.)
- Active
Links
- 239000007921 spray Substances 0.000 title claims abstract description 104
- 238000002156 mixing Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005192 partition Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 74
- 238000000926 separation method Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005465 channeling Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
-
- 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
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/62—Arrangements for supporting spraying apparatus, e.g. suction cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a multi-medium self-check self-mixing spray gun and a use method thereof, wherein the multi-medium self-check self-mixing spray gun comprises a spray gun body, a high-flow-rate medium conveying pipe, a medium partition plate and a nozzle; the spray gun body is of a cylindrical structure horizontally and transversely arranged, and the left end of the spray gun body is in threaded connection with the nozzle; the inside of the spray gun body is divided into a mixing area, a premixing area and a medium conveying area from left to right, a high-flow-rate medium conveying pipe is coaxially arranged in the medium conveying area, and the high-flow-rate medium is conveyed into the premixing area through the high-flow-rate medium conveying pipe; the high-flow-rate medium conveying pipe and the spray gun body enclose a circular area, the circular area is equally divided into three low-flow-rate medium conveying areas along the circumferential direction of the circular area through the medium partition plate, three different low-flow-rate mediums are conveyed into the premixing area through the low-flow-rate medium conveying areas, are premixed with the high-flow-rate mediums, and are sprayed out through the nozzle after entering the mixing area to be fully mixed. The invention realizes that the multi-media are directly connected to the spray gun body for automatic mixing.
Description
Technical Field
The invention relates to the technical field of flue gas treatment, in particular to a multi-medium self-check self-mixing spray gun and a use method thereof.
Background
In view of the popularity of the current flue gas treatment systems, various absorbents or liquid media are injected into various reactors by means of spray guns to realize auxiliary deacidification and cooling of the flue gas systems, and different absorbents or auxiliary media are often required to be injected when the flue gas treatment systems are put into operation to better realize the functions. However, when a plurality of mediums are put into operation, the mutual mixing of the mediums needs to be considered, and meanwhile, the pollution of the original medium pipelines and accessory equipment caused by the mutual cross flow among the mediums due to the uneven pressure of each conveying pipe is prevented.
The spray gun commonly used in the current flue gas treatment system is mostly of double media, namely one path of the spray gun is used for conveying reactants, one path of the spray gun is used for providing compressed air as atomization power, but sometimes, different media are required to be mixed by multiple media, one path of main pipeline is required to be connected to the spray gun, so that backflow and channeling phenomena possibly occur due to uneven pressure after different media are converged, even the backflow can occur to storage equipment to cause the pollution of original media in a path pipeline device and a storage area, and in addition, a static mixer is often required to be additionally arranged on the main pipeline in order to enable different media to be fully mixed before entering the spray gun. Therefore, the multifunctional spray gun which can comprehensively realize simultaneous application of multiple media, can automatically mix the multiple media and effectively prevent mutual cross flow among the media is researched and becomes a problem to be solved urgently at present.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the multi-medium self-check self-mixing spray gun and the use method thereof, so that the multi-medium can be directly connected to the spray gun body, the automatic mixing is realized in the spray gun body, and meanwhile, the occurrence of the phenomenon of cross flow and back flow among different mediums can be effectively prevented by arranging the check device.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention relates to a multi-medium self-check self-mixing spray gun, which has the innovation points that: comprises a spray gun body, a high-flow-rate medium conveying pipe, a medium separation plate and a nozzle; the spray gun body is of a cylindrical structure which is horizontally and transversely arranged, and the left end of the spray gun body is in threaded sealing communication with the input end of the spray nozzle in a coaxial center; the inside of the spray gun body is further divided into a mixing area, a premixing area and a medium conveying area from left to right in sequence, a high-flow-rate medium conveying pipe is horizontally and transversely penetrated and arranged at the inner center position of the spray gun body relative to the inner center of the medium conveying area, and the high-flow-rate medium is conveyed into the premixing area through the high-flow-rate medium conveying pipe; the high-flow-rate medium conveying pipe and the spray gun body form a circular area relative to the medium conveying area, the circular area is equally divided into three low-flow-rate medium conveying areas horizontally arranged along the circumferential direction of the circular area through three medium partition plates, three different low-flow-rate mediums are conveyed into the premixing area through the low-flow-rate medium conveying areas and are premixed with the high-flow-rate mediums, and the mediums enter the mixing area for full mixing and are sprayed out through the spray nozzles;
the three medium separation plates are uniformly distributed in the annular region along the circumferential direction of the high-flow-rate medium conveying pipe at intervals, the width directions of the three medium separation plates are radially arranged along the high-flow-rate medium conveying pipe and are respectively in sealing connection with the outer circumferential surface of the high-flow-rate medium conveying pipe and the corresponding inner circumferential surface of the spray gun body, the length direction of each medium separation plate is consistent with the length direction of the high-flow-rate medium conveying pipe, and the annular region is equally divided into three low-flow-rate medium conveying regions which are horizontally and transversely arranged through the three medium separation plates;
the premixing zone is of a hollow conical structure, and the large-diameter end of the premixing zone is arranged at one side close to the medium conveying zone; outlet bent pipes are respectively arranged at the joint of each low-flow-rate medium conveying area and the premixing area, and the three outlet bent pipes are uniformly distributed in the premixing area at 120 degrees; each outlet elbow can be designed according to the flow and flow speed requirements and is arranged in a non-interference way with the high-flow-speed medium conveying pipe respectively; the inlet end of each outlet elbow is respectively communicated with the corresponding low-flow-rate medium conveying area in a sealing way, and the outlet end of each outlet elbow is bent towards the central axis of the spray gun body at 120 degrees and is respectively arranged at the outlet end close to the high-flow-rate medium conveying pipe, so that low-flow-rate medium is conveyed to the premixing area and mutually impacted with the high-flow-rate medium for premixing;
a check device is further arranged at one side of the low-flow-rate medium conveying area close to the outlet elbow pipe respectively, each check device adopts a spring pressing block structure, and the occurrence of a cross flow backflow phenomenon among different mediums is prevented through the check device;
each non-return device comprises a non-return partition plate, a supporting seat, a spring and a lifting sealing seat, wherein each non-return partition plate is an integral partition plate consisting of two vertical plates and a transverse plate, each vertical plate is of an arc structure matched with a circular area, every two adjacent vertical plates are arranged at left and right intervals along the diameter of a high-flow-rate medium conveying pipe, each vertical plate on the left side is respectively and fixedly connected with the outer circumferential surface of the high-flow-rate medium conveying pipe in a sealing manner, and each vertical plate on the right side is respectively and fixedly connected with the corresponding position of the inner circumferential surface of a spray gun body in a sealing manner; one end of each vertical plate near the left side, which is far away from the center of the spray gun body, is arranged in the same plane with one end of each vertical plate near the right side, which is near the center of the spray gun body, and a transverse plate is also arranged between the vertical plates in a transverse sealing manner, so that a corresponding low-flow-rate medium conveying area is divided into two independent areas left and right through a non-return partition plate; a lifting sealing seat is also arranged between each transverse plate and the inner circumferential surface of the spray gun body along the radial direction of the transverse plate, each lifting sealing seat is of a T-shaped structure matched with the transverse plate, and the large-diameter end of each lifting sealing seat is arranged at one side close to the corresponding transverse plate; a through hole is embedded and formed in the central position of each transverse plate relative to the large-diameter end of the lifting sealing seat, the diameter of each through hole is smaller than that of the large-diameter end corresponding to the lifting sealing seat, a supporting seat is sleeved and sliding on the small-diameter end of each lifting sealing seat coaxially, each supporting seat is of a hollow cylinder structure, one end of each supporting seat, which is close to the lifting sealing seat, is turned outwards, and the other end of each supporting seat is fixedly connected with the corresponding position of the inner circumferential surface of the gun body in a sealing way; and springs are sleeved on the small-diameter ends of the lifting sealing seats in a coaxial manner, two ends of each spring are fixedly connected with the large-diameter ends of the lifting sealing seats and the turnups of the supporting seats respectively, and then the lifting sealing seats are pressed against through holes of the corresponding transverse plates by spring force of the springs, so that the medium in other low-flow-rate medium conveying areas is prevented from flowing back into the low-flow-rate medium conveying areas to cause pollution.
Preferably, the first connecting flange is further included; the outlet end of the high-flow-rate medium conveying pipe horizontally and vertically extends into the premixing zone, the inlet end of the high-flow-rate medium conveying pipe horizontally and vertically extends out of the right side face of the spray gun body, a first connecting flange is sleeved at the inlet end of the high-flow-rate medium conveying pipe coaxially, and the high-flow-rate medium conveying pipe is communicated with a high-flow-rate medium source in a sealing mode through the first connecting flange, so that high-flow-rate medium is conveyed to the premixing zone.
Preferably, the device further comprises a low-flow-rate medium conveying pipe and a second connecting flange; the outer circumferential surface of the spray gun body is further vertically embedded with low-flow-rate medium inlets at the positions close to the right end of the spray gun body relative to the three low-flow-rate medium conveying areas, and the three low-flow-rate medium inlets are uniformly distributed at 120 degrees; the low-flow-rate medium inlets are also sleeved with low-flow-rate medium conveying pipes in a coaxial sealing manner, one ends of the low-flow-rate medium conveying pipes far away from the spray gun body are also sleeved with second connecting flanges in a coaxial manner respectively, and each low-flow-rate medium conveying pipe is communicated with a corresponding low-flow-rate medium source in a sealing manner through the second connecting flanges respectively, so that three different low-flow-rate mediums are conveyed to the premixing zone.
Preferably, the device further comprises a fixing flange; the middle position of the spray gun body relative to the medium conveying area is also coaxially sleeved with a fixing flange, the fixing flange is a nonstandard flange, and the size design of the fixing flange is matched with a counter flange on which the spray gun body needs to be installed, so that the whole spray gun is fixed through the fixing flange.
Preferably, a mixing disturbance plate is further coaxially arranged in the mixing region along the length direction of the mixing region, and the mixing disturbance plate comprises a main shaft and a plurality of blades; the main shaft is horizontally and transversely coaxially arranged at the central position of the mixing zone, a plurality of disturbance groups are also uniformly distributed on the main shaft at intervals along the length direction, each disturbance group is uniformly distributed by four blades along the circumferential direction of the main shaft, each blade is obliquely arranged at 45 degrees, the blades of adjacent disturbance groups are oppositely inclined and staggered at 45 degrees, and the premixed media are fully mixed by changing the flowing direction through the mixing disturbance plates.
The invention relates to a use method of a multi-medium self-check self-mixing spray gun, which is characterized by comprising the following steps of:
step one: firstly, fixing the whole spray gun through a fixing flange, and sealing and communicating a first connecting flange with a high-flow-rate medium source, wherein three second connecting flanges are respectively and hermetically communicated with corresponding low-flow-rate medium sources;
step two: when the pressure of the low-flow-rate medium is greater than the spring force of the spring and the dead weight of the lifting sealing seat, the lifting sealing seat is far away from the transverse plate, so that a passage is formed at the left part and the right part of the low-flow-rate medium conveying area, and three different low-flow-rate mediums are conveyed to the premixing area;
step three: simultaneously, high-flow-rate medium is conveyed to the premixing zone through the high-flow-rate medium conveying pipe, the low-flow-rate medium and the high-flow-rate medium are converged at one point in the flowing direction of the premixing zone, and the low-flow-rate medium and the high-flow-rate medium are mutually impacted and scattered for mixing, so that premixing is realized;
step four: the premixed media enter a mixing area, the flowing direction of the media is changed through the continuous collision of a mixing disturbance plate, so that the media are fully mixed, and the media are sprayed out through a nozzle;
step five: when the medium pressure at the left part of the low-flow-rate medium conveying area is higher than that at the right part of the low-flow-rate medium conveying area, the lifting sealing seat is pressed against the through hole of the corresponding transverse plate by matching with the spring force, so that the left part and the right part of the low-flow-rate medium conveying area form a closed circuit, and the phenomenon of cross flow and back flow among different mediums is prevented.
The invention has the beneficial effects that:
(1) According to the invention, the multi-medium can be directly connected to the spray gun body, automatic mixing is realized in the spray gun body, and meanwhile, the occurrence of the phenomenon of cross flow and back flow among different mediums can be effectively prevented by arranging the non-return device;
(2) The spray gun body is of an integrated structure, is matched with a nonstandard flange for installation and fixation, omits the links that a static mixer and a check valve are required to be considered in the traditional pipeline design, and is convenient to install and use;
(3) According to the invention, under the condition that the main structure of the spray gun body is unchanged, the low-flow-rate medium conveying area can be increased or decreased through the medium partition plate according to the use requirement;
(4) The check mechanism is of a spring pressing block type structure, can be suitable for being installed at various angles horizontally and vertically, and does not influence the check effect;
(5) In the premixing zone, the high-flow-rate medium can impact and break up the low-flow-rate medium which is gathered at the periphery to achieve the aim of premixing, thereby improving the overall mixing effect;
(6) The mixing disturbance plates are arranged in a plurality of groups of forward and reverse dislocation way, so that the premixed media can continuously collide and change the flow direction of the media when flowing through the mixing area, and further the full and uniform mixing is realized;
(7) The nozzle adopts a threaded connection mode, so that a proper nozzle can be selected according to the designed spray angle coverage range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a multi-media self-check self-mixing spray gun of the present invention.
Fig. 2 is A-A view of fig. 1.
Fig. 3 is a partial enlarged view of a portion G in fig. 1.
Fig. 4 is a view B-B of fig. 1.
Fig. 5 is a schematic structural view of the hybrid perturbation plate of fig. 1.
Wherein 1-a first connection flange; 2-a second connection flange; 3-a high flow rate media delivery tube; 4-a low flow media delivery zone; 5-a media separator plate; 6-fixing the flange; 7-a non-return partition; 8-a supporting seat; 9-a spring; 10-lifting type sealing seats; 11-outlet elbow; 12-a mixing zone; 13-a mixing turbulence plate; 14-nozzles; 15-a pre-mix zone; 16-a spray gun body.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following detailed description.
The invention relates to a multi-medium self-check self-mixing spray gun, which comprises a spray gun body 16, a high-flow-rate medium conveying pipe 3, a medium partition plate 5 and a nozzle 14; as shown in fig. 1-5, the spray gun body 16 is of a cylindrical structure horizontally and transversely arranged, and the left end of the spray gun body is in threaded sealing communication with the input end of the nozzle 14 in a coaxial center; the inside of the spray gun body 16 is further divided into a mixing zone 12, a premixing zone 15 and a medium conveying zone in turn from left to right, a high-flow-rate medium conveying pipe 3 is horizontally and transversely penetrated in the inner center position of the spray gun body 16 relative to the inner center of the medium conveying zone, and the high-flow-rate medium is conveyed into the premixing zone 15 through the high-flow-rate medium conveying pipe 3; the outlet end of the high-flow-rate medium conveying pipe 3 extends horizontally and vertically into the premixing zone 15, the inlet end of the high-flow-rate medium conveying pipe extends horizontally and vertically out of the right side surface of the spray gun body 16, the inlet end of the high-flow-rate medium conveying pipe 3 is also coaxially sleeved with a first connecting flange 1, and the high-flow-rate medium conveying pipe 3 is communicated with a high-flow-rate medium source in a sealing manner through the first connecting flange 1, so that high-flow-rate medium is conveyed to the premixing zone 15.
A circular area is formed between a high-flow-rate medium conveying pipe 3 and a spray gun body 16 relative to a medium conveying area, the circular area is equally divided into three low-flow-rate medium conveying areas 4 which are horizontally and transversely arranged along the circumferential direction by three medium partition plates 5, three different low-flow-rate mediums are conveyed into a premixing area 15 by the low-flow-rate medium conveying areas 4, are premixed with the high-flow-rate mediums, enter a mixing area 12 for full mixing, and are sprayed out by a nozzle 14. As shown in fig. 1 to 5, three medium separation plates 5 are uniformly distributed and spaced in the annular region along the circumferential direction of the high-flow-rate medium conveying pipe 3, and the width directions of the three medium separation plates 5 are radially arranged along the high-flow-rate medium conveying pipe 3 and are respectively in sealing connection with the outer circumferential surface of the high-flow-rate medium conveying pipe 3 and the corresponding inner circumferential surface of the spray gun body 16, and the length direction of each medium separation plate 5 is consistent with the length direction of the high-flow-rate medium conveying pipe 3, so that the annular region is equally divided into three low-flow-rate medium conveying regions 4 horizontally and transversely arranged through the three medium separation plates 5.
As shown in fig. 1 and 2, low-flow-rate medium inlets are vertically embedded and arranged at positions, close to the right end, of the outer circumferential surface of the spray gun body 16 relative to the three low-flow-rate medium conveying areas 4, and the three low-flow-rate medium inlets are uniformly distributed at 120 degrees; the low-flow-rate medium inlets are also sleeved with low-flow-rate medium conveying pipes in a coaxial sealing manner, the end, far away from the spray gun body 16, of each low-flow-rate medium conveying pipe is also sleeved with a second connecting flange 2 in a coaxial manner, and each low-flow-rate medium conveying pipe is respectively communicated with a corresponding low-flow-rate medium source in a sealing manner through the second connecting flange 2, so that three different low-flow-rate mediums are conveyed to the premixing zone 15.
The premixing zone 15 is of a hollow conical structure, and the large diameter end of the premixing zone 15 is arranged at one side close to the medium conveying zone; as shown in fig. 1-4, outlet bent pipes 11 are respectively arranged at the joint of each low-flow-rate medium conveying zone 4 and the premixing zone 15, and the three outlet bent pipes 11 are uniformly distributed in the premixing zone 15 at 120 degrees; each outlet bent pipe 11 can be designed according to the flow and flow speed requirements and is arranged in a non-interference way with the high-flow-speed medium conveying pipe 3 respectively; the inlet end of each outlet elbow pipe 11 is respectively communicated with the corresponding low-flow-rate medium conveying area 4 in a sealing way, and the outlet end of each outlet elbow pipe is bent towards the central axis of the spray gun body 16 at 120 degrees and is respectively arranged at the outlet end close to the high-flow-rate medium conveying pipe 3, so that low-flow-rate medium is conveyed to the premixing area 15 and mutually impacted with the high-flow-rate medium for premixing.
As shown in fig. 1, a fixing flange 6 is also coaxially sleeved on the gun body 16 at a position opposite to the medium conveying area, the fixing flange 6 is a nonstandard flange, and the size of the fixing flange is matched with a counter flange on which the gun body 16 needs to be installed, so that the whole spray gun is fixed through the fixing flange 6.
The invention is characterized in that a check device is respectively arranged at one side of each low-flow-rate medium conveying area 4 near an outlet elbow pipe 11, each check device adopts a spring 9 press block type structure, and the check device is used for preventing the occurrence of the phenomenon of channeling and backflow among different mediums; each check device comprises a check partition plate 7, a supporting seat 8, a spring 9 and a lifting sealing seat 10, each check partition plate 7 is an integral partition plate composed of two vertical plates and a transverse plate, as shown in fig. 1-4, each vertical plate is of an arc structure matched with a circular area, every two adjacent vertical plates are arranged at intervals left and right along the radial direction of the high-flow-rate medium conveying pipe 3, each vertical plate on the left side is respectively and fixedly connected with the outer circumferential surface of the high-flow-rate medium conveying pipe 3 in a sealing way, and each vertical plate on the right side is respectively and fixedly connected with the corresponding position of the inner circumferential surface of the spray gun body 16 in a sealing way; one end of each vertical plate near the left side far from the center of the spray gun body 16 is arranged in the same plane with one end of the corresponding vertical plate near the right side near the center of the spray gun body 16, and a transverse plate is also arranged between the two vertical plates in a transverse sealing and fixing manner, so that the corresponding low-flow-rate medium conveying area 4 is divided into two independent areas left and right through a non-return partition plate 7;
as shown in fig. 1-4, a lifting seal seat 10 is further provided between each transverse plate and the inner circumferential surface of the gun body 16 along the radial direction thereof, each lifting seal seat 10 has a T-shaped structure matched with the transverse plate, and the large diameter end thereof is arranged at one side close to the corresponding transverse plate; a through hole is embedded and formed in the central position of each transverse plate relative to the large-diameter end of the lifting sealing seat 10, the diameter of each through hole is smaller than that of the large-diameter end of the corresponding lifting sealing seat 10, a supporting seat 8 is sleeved and sliding on the small-diameter end of each lifting sealing seat 10 in a coaxial manner, each supporting seat 8 is of a hollow cylinder structure, one end of each supporting seat, which is close to the lifting sealing seat 10, is turned outwards, and the other end of each supporting seat is fixedly connected with the corresponding position of the inner circumferential surface of the spray gun body 16 in a sealing manner; the small diameter end of each lifting sealing seat 10 is also sleeved with a spring 9 in a coaxial manner, two ends of each spring 9 are fixedly connected with the large diameter end of the corresponding lifting sealing seat 10 and the flanging of the supporting seat 8 respectively, and then the lifting sealing seat 10 is pressed against the through holes of the corresponding transverse plates by the force of the springs 9, so that the medium in other low-flow-rate medium conveying areas 4 is prevented from flowing back into the low-flow-rate medium conveying areas 4 to cause pollution.
The invention is also provided with a mixing disturbance plate 13 coaxially arranged in the mixing zone 12 along the length direction, and the mixing disturbance plate 13 comprises a main shaft and a plurality of blades; as shown in fig. 1 and 5, the main shaft is horizontally and horizontally coaxially arranged at the center of the mixing zone 12, and a plurality of disturbance groups are sequentially and uniformly distributed on the main shaft at intervals along the length direction, each disturbance group is uniformly distributed by four blades along the circumferential direction, each blade is obliquely arranged by 45 degrees, the blades of adjacent disturbance groups are obliquely opposite in direction and are staggered by 45 degrees, and the premixed media are fully mixed by changing the flowing direction through the mixing disturbance plate 13.
The invention discloses a use method of a multi-medium self-check self-mixing spray gun, which comprises the following steps:
step one: the whole spray gun is fixed through the fixed flange 6, the first connecting flange 1 is communicated with a high-flow-rate medium source in a sealing mode, and the three second connecting flanges 2 are respectively communicated with corresponding low-flow-rate medium sources in a sealing mode.
Step two: when the pressure of the low-flow-rate medium is greater than the force of the spring 9 and the self weight of the lifting sealing seat 10, the lifting sealing seat 10 is far away from the transverse plate, so that a passage is formed at the left and right parts of the low-flow-rate medium conveying area 4, and three different low-flow-rate mediums are conveyed to the premixing area 15.
Step three: meanwhile, high-flow-rate medium is conveyed to the premixing zone 15 through the high-flow-rate medium conveying pipe 3, the low-flow-rate medium and the high-flow-rate medium are converged at one point in the flowing direction of the premixing zone 15, and are mutually impacted, dispersed and mixed, so that premixing is realized.
Step four: the premixed media enter the mixing zone 12, continuously collide through the mixing disturbance plate 13 to change the flow direction of the media, so that the media are fully mixed, and are sprayed out through the nozzle 14.
Step five: when the medium pressure at the left part of the low-flow-rate medium conveying area 4 is higher than that at the right part of the low-flow-rate medium conveying area, the lifting sealing seat 10 is pressed against the through hole of the corresponding transverse plate by matching with the force of the spring 9, so that the left part and the right part of the low-flow-rate medium conveying area 4 form a closed circuit, and the phenomenon of channeling and backflow among different mediums is prevented.
The invention has the beneficial effects that:
(1) The invention can realize that the multi-media are directly connected to the spray gun body 16, and realize automatic mixing in the spray gun body 16, and meanwhile, through arranging the non-return device, the phenomenon of cross flow and back flow among different media can be effectively prevented;
(2) The spray gun body 16 is of an integrated structure, is matched with a nonstandard flange for installation and fixation, omits the links that a static mixer and a check valve are required to be considered in the traditional pipeline design, and is convenient to install and use;
(3) According to the invention, under the condition that the main structure of the spray gun body 16 is unchanged, the low-flow-rate medium conveying area 4 can be increased or decreased through the medium separation plate 5 according to the use requirement;
(4) The check mechanism is of a spring 9 press block type structure, can be suitable for being installed at various angles horizontally and vertically, and does not influence the check effect;
(5) In the premixing zone 15, the high-flow-rate medium can impact and scatter the low-flow-rate medium which is gathered at the periphery to achieve the aim of premixing, thereby improving the overall mixing effect;
(6) The mixing disturbance plates 13 are arranged in a plurality of groups of forward and reverse dislocation way, so that the flow direction of the premixed media can be changed by collision when the premixed media flow through the mixing zone 12, and further, the full and uniform mixing is realized;
(7) The nozzle 14 of the present invention adopts a threaded connection manner, and thus, a suitable nozzle 14 can be selected according to the designed spray angle coverage range.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the present invention is not limited to the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention should fall within the protection scope of the present invention, and the claimed technical content of the present invention is fully described in the claims.
Claims (6)
1. A multi-medium self-check self-mixing spray gun, which is characterized in that: comprises a spray gun body, a high-flow-rate medium conveying pipe, a medium separation plate and a nozzle; the spray gun body is of a cylindrical structure which is horizontally and transversely arranged, and the left end of the spray gun body is in threaded sealing communication with the input end of the spray nozzle in a coaxial center; the inside of the spray gun body is further divided into a mixing area, a premixing area and a medium conveying area from left to right in sequence, a high-flow-rate medium conveying pipe is horizontally and transversely penetrated and arranged at the inner center position of the spray gun body relative to the inner center of the medium conveying area, and the high-flow-rate medium is conveyed into the premixing area through the high-flow-rate medium conveying pipe; the high-flow-rate medium conveying pipe and the spray gun body form a circular area relative to the medium conveying area, the circular area is equally divided into three low-flow-rate medium conveying areas horizontally arranged along the circumferential direction of the circular area through three medium partition plates, three different low-flow-rate mediums are conveyed into the premixing area through the low-flow-rate medium conveying areas and are premixed with the high-flow-rate mediums, and the mediums enter the mixing area for full mixing and are sprayed out through the spray nozzles;
the three medium separation plates are uniformly distributed in the annular region along the circumferential direction of the high-flow-rate medium conveying pipe at intervals, the width directions of the three medium separation plates are radially arranged along the high-flow-rate medium conveying pipe and are respectively in sealing connection with the outer circumferential surface of the high-flow-rate medium conveying pipe and the corresponding inner circumferential surface of the spray gun body, the length direction of each medium separation plate is consistent with the length direction of the high-flow-rate medium conveying pipe, and the annular region is equally divided into three low-flow-rate medium conveying regions which are horizontally and transversely arranged through the three medium separation plates;
the premixing zone is of a hollow conical structure, and the large-diameter end of the premixing zone is arranged at one side close to the medium conveying zone; outlet bent pipes are respectively arranged at the joint of each low-flow-rate medium conveying area and the premixing area, and the three outlet bent pipes are uniformly distributed in the premixing area at 120 degrees; each outlet elbow can be designed according to the flow and flow speed requirements and is arranged in a non-interference way with the high-flow-speed medium conveying pipe respectively; the inlet end of each outlet elbow is respectively communicated with the corresponding low-flow-rate medium conveying area in a sealing way, and the outlet end of each outlet elbow is bent towards the central axis of the spray gun body at 120 degrees and is respectively arranged at the outlet end close to the high-flow-rate medium conveying pipe, so that low-flow-rate medium is conveyed to the premixing area and mutually impacted with the high-flow-rate medium for premixing;
a check device is further arranged at one side of the low-flow-rate medium conveying area close to the outlet elbow pipe respectively, each check device adopts a spring pressing block structure, and the occurrence of a cross flow backflow phenomenon among different mediums is prevented through the check device;
each non-return device comprises a non-return partition plate, a supporting seat, a spring and a lifting sealing seat, wherein each non-return partition plate is an integral partition plate consisting of two vertical plates and a transverse plate, each vertical plate is of an arc structure matched with a circular area, every two adjacent vertical plates are arranged at left and right intervals along the diameter of a high-flow-rate medium conveying pipe, each vertical plate on the left side is respectively and fixedly connected with the outer circumferential surface of the high-flow-rate medium conveying pipe in a sealing manner, and each vertical plate on the right side is respectively and fixedly connected with the corresponding position of the inner circumferential surface of a spray gun body in a sealing manner; one end of each vertical plate near the left side, which is far away from the center of the spray gun body, is arranged in the same plane with one end of each vertical plate near the right side, which is near the center of the spray gun body, and a transverse plate is also arranged between the vertical plates in a transverse sealing manner, so that a corresponding low-flow-rate medium conveying area is divided into two independent areas left and right through a non-return partition plate; a lifting sealing seat is also arranged between each transverse plate and the inner circumferential surface of the spray gun body along the radial direction of the transverse plate, each lifting sealing seat is of a T-shaped structure matched with the transverse plate, and the large-diameter end of each lifting sealing seat is arranged at one side close to the corresponding transverse plate; a through hole is embedded and formed in the central position of each transverse plate relative to the large-diameter end of the lifting sealing seat, the diameter of each through hole is smaller than that of the large-diameter end corresponding to the lifting sealing seat, a supporting seat is sleeved and sliding on the small-diameter end of each lifting sealing seat coaxially, each supporting seat is of a hollow cylinder structure, one end of each supporting seat, which is close to the lifting sealing seat, is turned outwards, and the other end of each supporting seat is fixedly connected with the corresponding position of the inner circumferential surface of the gun body in a sealing way; and springs are sleeved on the small-diameter ends of the lifting sealing seats in a coaxial manner, two ends of each spring are fixedly connected with the large-diameter ends of the lifting sealing seats and the turnups of the supporting seats respectively, and then the lifting sealing seats are pressed against through holes of the corresponding transverse plates by spring force of the springs, so that the medium in other low-flow-rate medium conveying areas is prevented from flowing back into the low-flow-rate medium conveying areas to cause pollution.
2. A multi-media self-check self-mixing spray gun according to claim 1, wherein: the first connecting flange is also included; the outlet end of the high-flow-rate medium conveying pipe horizontally and vertically extends into the premixing zone, the inlet end of the high-flow-rate medium conveying pipe horizontally and vertically extends out of the right side face of the spray gun body, a first connecting flange is sleeved at the inlet end of the high-flow-rate medium conveying pipe coaxially, and the high-flow-rate medium conveying pipe is communicated with a high-flow-rate medium source in a sealing mode through the first connecting flange, so that high-flow-rate medium is conveyed to the premixing zone.
3. A multi-media self-check self-mixing spray gun according to claim 2, wherein: the low-flow-rate medium conveying pipe and the second connecting flange are also included; the outer circumferential surface of the spray gun body is further vertically embedded with low-flow-rate medium inlets at the positions close to the right end of the spray gun body relative to the three low-flow-rate medium conveying areas, and the three low-flow-rate medium inlets are uniformly distributed at 120 degrees; the low-flow-rate medium inlets are also sleeved with low-flow-rate medium conveying pipes in a coaxial sealing manner, one ends of the low-flow-rate medium conveying pipes far away from the spray gun body are also sleeved with second connecting flanges in a coaxial manner respectively, and each low-flow-rate medium conveying pipe is communicated with a corresponding low-flow-rate medium source in a sealing manner through the second connecting flanges respectively, so that three different low-flow-rate mediums are conveyed to the premixing zone.
4. A multi-media self-check self-mixing spray gun according to claim 3, wherein: the device also comprises a fixed flange; the middle position of the spray gun body relative to the medium conveying area is also coaxially sleeved with a fixing flange, the fixing flange is a nonstandard flange, and the size design of the fixing flange is matched with a counter flange on which the spray gun body needs to be installed, so that the whole spray gun is fixed through the fixing flange.
5. A multi-media self-check self-mixing spray gun according to claim 4, wherein: a mixing disturbance plate is also coaxially arranged in the mixing region along the length direction of the mixing region, and comprises a main shaft and a plurality of blades; the main shaft is horizontally and transversely coaxially arranged at the central position of the mixing zone, a plurality of disturbance groups are also uniformly distributed on the main shaft at intervals along the length direction, each disturbance group is uniformly distributed by four blades along the circumferential direction of the main shaft, each blade is obliquely arranged at 45 degrees, the blades of adjacent disturbance groups are oppositely inclined and staggered at 45 degrees, and the premixed media are fully mixed by changing the flowing direction through the mixing disturbance plates.
6. A method of using a multi-media self-check self-mixing spray gun according to claim 5, comprising the steps of:
step one: firstly, fixing the whole spray gun through a fixing flange, and sealing and communicating a first connecting flange with a high-flow-rate medium source, wherein three second connecting flanges are respectively and hermetically communicated with corresponding low-flow-rate medium sources;
step two: when the pressure of the low-flow-rate medium is greater than the spring force of the spring and the dead weight of the lifting sealing seat, the lifting sealing seat is far away from the transverse plate, so that a passage is formed at the left part and the right part of the low-flow-rate medium conveying area, and three different low-flow-rate mediums are conveyed to the premixing area;
step three: simultaneously, high-flow-rate medium is conveyed to the premixing zone through the high-flow-rate medium conveying pipe, the low-flow-rate medium and the high-flow-rate medium are converged at one point in the flowing direction of the premixing zone, and the low-flow-rate medium and the high-flow-rate medium are mutually impacted and scattered for mixing, so that premixing is realized;
step four: the premixed media enter a mixing area, the flowing direction of the media is changed through the continuous collision of a mixing disturbance plate, so that the media are fully mixed, and the media are sprayed out through a nozzle;
step five: when the medium pressure at the left part of the low-flow-rate medium conveying area is higher than that at the right part of the low-flow-rate medium conveying area, the lifting sealing seat is pressed against the through hole of the corresponding transverse plate by matching with the spring force, so that the left part and the right part of the low-flow-rate medium conveying area form a closed circuit, and the phenomenon of cross flow and back flow among different mediums is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211023339.4A CN115350830B (en) | 2022-08-25 | 2022-08-25 | Multi-medium self-check self-mixing spray gun and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211023339.4A CN115350830B (en) | 2022-08-25 | 2022-08-25 | Multi-medium self-check self-mixing spray gun and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115350830A CN115350830A (en) | 2022-11-18 |
| CN115350830B true CN115350830B (en) | 2024-03-29 |
Family
ID=84005541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211023339.4A Active CN115350830B (en) | 2022-08-25 | 2022-08-25 | Multi-medium self-check self-mixing spray gun and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115350830B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB765368A (en) * | 1953-09-08 | 1957-01-09 | Esser Paul | Improvements in or relating to spray guns for spraying paint or the like medium by means of compressed air |
| JP2003290694A (en) * | 2002-03-29 | 2003-10-14 | Sanko Techno Co Ltd | Discharge fixture for two-pack type mixed adhesive |
| CN2847058Y (en) * | 2005-06-28 | 2006-12-13 | 西安热工研究院有限公司 | Multiedge low speed burner |
| CN201513884U (en) * | 2009-09-28 | 2010-06-23 | 徐州燃控科技股份有限公司 | Multifunctional combined atomizing spray gun |
| KR101016412B1 (en) * | 2010-02-08 | 2011-02-21 | 주식회사 휴먼텍 | Two liquide package cartridge |
| CN202078985U (en) * | 2011-05-06 | 2011-12-21 | 高益松 | Dual-tube foaming spray gun |
| CN102878797A (en) * | 2011-07-14 | 2013-01-16 | 林德股份公司 | Shaft furnace and method for operating same |
| WO2015062835A1 (en) * | 2013-10-30 | 2015-05-07 | Henkel Ag & Co. Kgaa | Dynamic mixing device |
| CN207119255U (en) * | 2017-07-19 | 2018-03-20 | 国家电投集团远达环保装备制造有限公司 | Desulfurizing tower shower |
| CN207238298U (en) * | 2017-09-30 | 2018-04-17 | 江西远达环保有限公司 | Denitration spray gun for desulfuration |
| CN207929440U (en) * | 2018-01-29 | 2018-10-02 | 上海航天智慧能源技术有限公司 | A kind of integrated spiral atomizer with pre-mixing function |
| KR20190014646A (en) * | 2017-08-03 | 2019-02-13 | 엔젯 주식회사 | Spray nozzle |
| CN110461082A (en) * | 2019-07-10 | 2019-11-15 | 江苏天楹环保能源成套设备有限公司 | A kind of apparatus and method reducing NOx content in air plasma pharos flame |
| CN211098424U (en) * | 2019-11-29 | 2020-07-28 | 高密市嘉德环保设备有限公司 | Double-fluid denitration spray gun |
| CN113418035A (en) * | 2021-08-25 | 2021-09-21 | 南通欣昌减震器有限公司 | Anti-blocking low-resistance check valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7024861B2 (en) * | 2002-12-20 | 2006-04-11 | Martling Vincent C | Fully premixed pilotless secondary fuel nozzle with improved tip cooling |
-
2022
- 2022-08-25 CN CN202211023339.4A patent/CN115350830B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB765368A (en) * | 1953-09-08 | 1957-01-09 | Esser Paul | Improvements in or relating to spray guns for spraying paint or the like medium by means of compressed air |
| JP2003290694A (en) * | 2002-03-29 | 2003-10-14 | Sanko Techno Co Ltd | Discharge fixture for two-pack type mixed adhesive |
| CN2847058Y (en) * | 2005-06-28 | 2006-12-13 | 西安热工研究院有限公司 | Multiedge low speed burner |
| CN201513884U (en) * | 2009-09-28 | 2010-06-23 | 徐州燃控科技股份有限公司 | Multifunctional combined atomizing spray gun |
| KR101016412B1 (en) * | 2010-02-08 | 2011-02-21 | 주식회사 휴먼텍 | Two liquide package cartridge |
| CN202078985U (en) * | 2011-05-06 | 2011-12-21 | 高益松 | Dual-tube foaming spray gun |
| CN102878797A (en) * | 2011-07-14 | 2013-01-16 | 林德股份公司 | Shaft furnace and method for operating same |
| EP2546366A1 (en) * | 2011-07-14 | 2013-01-16 | Linde Aktiengesellschaft | Shaft furnace and method for operating same |
| WO2015062835A1 (en) * | 2013-10-30 | 2015-05-07 | Henkel Ag & Co. Kgaa | Dynamic mixing device |
| CN207119255U (en) * | 2017-07-19 | 2018-03-20 | 国家电投集团远达环保装备制造有限公司 | Desulfurizing tower shower |
| KR20190014646A (en) * | 2017-08-03 | 2019-02-13 | 엔젯 주식회사 | Spray nozzle |
| CN207238298U (en) * | 2017-09-30 | 2018-04-17 | 江西远达环保有限公司 | Denitration spray gun for desulfuration |
| CN207929440U (en) * | 2018-01-29 | 2018-10-02 | 上海航天智慧能源技术有限公司 | A kind of integrated spiral atomizer with pre-mixing function |
| CN110461082A (en) * | 2019-07-10 | 2019-11-15 | 江苏天楹环保能源成套设备有限公司 | A kind of apparatus and method reducing NOx content in air plasma pharos flame |
| CN211098424U (en) * | 2019-11-29 | 2020-07-28 | 高密市嘉德环保设备有限公司 | Double-fluid denitration spray gun |
| CN113418035A (en) * | 2021-08-25 | 2021-09-21 | 南通欣昌减震器有限公司 | Anti-blocking low-resistance check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115350830A (en) | 2022-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2416445C1 (en) | Fluid sprayer | |
| OA12593A (en) | Liquid sprayers. | |
| RU2461427C1 (en) | Kochetov's fluid spray nozzle | |
| CN202446994U (en) | Structure for improving mixing effect of gas mixing equipment | |
| AU2012202150B1 (en) | A flow distributor | |
| CN106215733B (en) | A kind of pressure break powder liquid blending device | |
| CN108772218A (en) | A kind of eddy current type cleaning injection apparatus | |
| CN110360073A (en) | A kind of electric thruster anode gas distribution device | |
| CN115350830B (en) | Multi-medium self-check self-mixing spray gun and application method thereof | |
| CN110918284A (en) | Medium atomizing nozzle, spraying device and spraying machine | |
| CN115155350A (en) | Mixer for mixing ethylene and oxygen | |
| CN103100173A (en) | Fixed pipe network extinguishing system | |
| CN100400146C (en) | Mixing system | |
| CN204522946U (en) | For the gas distributor of three phase slurry bed bioreactor | |
| CA2528675C (en) | Multi-spin mixer for particulate coal supply conduit | |
| KR20160079428A (en) | A Nozzle Assembly for Atomizing Liquid | |
| WO2006104418A2 (en) | Liquid atomizer | |
| CN209744417U (en) | Air atomizing nozzle with double oil ways and double rotational flow structures | |
| EP3725395A2 (en) | Fluid-gas mixer | |
| CN111911465A (en) | Distributed binary spray pipe ejector device | |
| WO2024045249A1 (en) | Fire-fighting foam foaming apparatus, system and method | |
| CN115212497B (en) | Compressed air foam generating bin for fire extinguishing system | |
| CN215673746U (en) | Novel combination valve | |
| CN210568434U (en) | Air and light hydrocarbon mixed gas mixing device based on explosion safety | |
| CN113332829A (en) | Be applied to vacuum pressure swing adsorption system's trachea distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |