Compressed air foam generating structure device

Abstract

The utility model relates to the technical field of compressed air foam, and discloses a compressed air foam generating structure device which comprises a foam mixed liquid conveying pipe, a compressed air injection pipe, a mixing pipe and an arc plate I. A foam mixed liquid input port is formed in one end of the foam mixed liquid conveying pipe. According to the compressed air foam generating structure device, when compressed air is injected into the compressed air injection pipe, the injection pressure of the compressed air can be monitored through the pressure gauge, the injected compressed air is sprayed out from the diffusion holes, and the compressed air is diffused through the small holes, so that the contact area of the compressed air and foam mixed liquid is increased; the gas-liquid layering phenomenon caused by the fact that a large amount of foam mixed liquid gathers at the bottom of the foam mixed liquid conveying pipe due to the gravity effect is improved, and device vibration caused by a gas plug flow pattern generated by concentrated jetting of a large amount of gas is avoided. And the spoiler is matched with the mixing paddle, so that the effects of collision, fusion, crushing, coalescence and mixing of the compressed air and the foam mixed liquid are achieved.

Description

Technical Field

[0001] This utility model relates to the field of compressed air foam technology, specifically to a compressed air foam generating structure device. Background Technology

[0002] Compressed air foam static mixers are mainly used in fire extinguishing equipment or systems to generate foam by mixing gas and liquid phases. Foam liquid is used in fire extinguishing. Current compressed air foam extinguishing systems generally mix foam and water directly and then spray it out with compressed air.

[0003] Most compressed air foam mixers on the market currently only have a single in-situ or staggered baffle design, which prevents the foam from fully contacting and mixing with the air, thus affecting mixing enhancement and output stability. In practical applications, problems such as insufficient mixing of ternary two-phase mixtures, excessive pressure differential and pressure drop, and low foaming rate often occur.

[0004] Therefore, it is necessary to propose a compressed air foam generating structure device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a compressed air foam generating structure device that can fully mix ternary two-phase mixtures, enhance mixing and achieve high output stability, while also facilitating internal cleaning of the device, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a compressed air foam generating structure device, comprising a foam mixture delivery pipe, a compressed air injection pipe, a mixing pipe, and an arc plate:

[0007] One end of the foam mixture delivery pipe is provided with a foam mixture inlet. The compressed air injection pipe is located inside the foam mixture delivery pipe. A valve is fixedly connected to the end of the compressed air injection pipe, and a pressure gauge is fixedly installed on the valve. Several diffuser holes are provided on the surface of the compressed air injection pipe. A guide plate is fixedly connected to the inner wall of the foam mixture delivery pipe. A mixing pipe is located at one end of the foam mixture delivery pipe. A flow deflector is provided inside the mixing pipe. Multiple mixing paddles are provided at one end of the flow deflector. An arc plate is provided at the connection between the foam mixture delivery pipe and the mixing pipe. A throat is fixedly connected to the end of the mixing pipe away from the foam mixture delivery pipe.

[0008] Preferably, the top of the valve is fixedly connected to a compressed air injection port, the direction of the diffuser hole is consistent with the position of the foam mixture inlet, and the end of the compressed air injection pipe is closed.

[0009] Preferably, the guide vane corresponds to the position of the spoiler.

[0010] Preferably, the spoiler is fixedly connected with the inner wall of the mixing pipe through a connecting piece, the mixing paddle is rotatably connected with one end of the spoiler through a rotating shaft, and the deflection directions of the blades of the multiple groups of mixing paddles are different.

[0011] Preferably, one end of the mixing pipe is fixedly connected with a rubber sleeve, the rubber sleeve is sleeved on the end of the foam mixed liquid conveying pipe, and the arc plate one is arranged on the surface of the rubber sleeve.

[0012] Preferably, one end of the arc plate one is rotatably connected with an arc plate two, one end of the arc plate two is rotatably connected with an arc plate three, the side surface of the arc plate three is fixedly connected with a threaded rod, the surface of the threaded rod is threadedly connected with a nut, the other end of the arc plate one is rotatably connected with an arc frame, one end of the arc frame is rotatably connected with a buckle plate, the edge of the buckle plate is provided with a clamping groove, and the nut is in abutment with the side surface of the clamping groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The compressed air foam generating structure device has the advantages that the compressed air is injected into the compressed air injection pipe, the injection pressure of the compressed air can be monitored by the pressure gauge, the injected compressed air is sprayed out from the diffusion hole, the contact area of the compressed air and the foam mixed liquid is increased while the diffusion hole diffuses, the gas-liquid stratification phenomenon caused by the large amount of foam mixed liquid gathering at the bottom of the foam mixed liquid conveying pipe due to gravity is improved, and the gas plug flow type caused by the concentrated gas injection is avoided, the cooperation of the spoiler and the mixing paddle provides the effect of collision and fusion of the compressed air and the foam mixed liquid, the three-phase two-phase medium after the initial mixing is subjected to deep vortex stirring by the mixing paddle, the mixing process is intense, the mixing effect is more sufficient, the foaming rate is high, the mixing effect is better, the foam mixed liquid conveying pipe and the mixing pipe can be conveniently disassembled by using the arc plate one, and the inside of the foam mixed liquid conveying pipe and the mixing pipe can be conveniently cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0016] Figure 1 It is a whole structure schematic view of the utility model device;

[0017] Figure 2 It is the cross section structure schematic view of the foam mixed solution delivery pipe of the utility model;

[0018] Figure 3 It is the cross section structure schematic view of the mixed pipe of the utility model;

[0019] Figure 4 It is the structure schematic view of the arc plate one of the utility model.

[0020] In the drawings, the component list represented by each sign is as follows:

[0021] 100, foam mixed solution delivery pipe; 101, foam mixed solution input port; 102, deflector plate;

[0022] 200, compressed air injection pipe; 201, diffusion hole; 202, valve; 203, compressed air injection port; 204, pressure gauge;

[0023] 300, mixed pipe; 301, spoiler; 302, connecting piece; 303, mixing paddle; 304, throat pipe;

[0024] 400, arc plate one; 401, arc plate two; 402, arc plate three; 403, arc frame; 404, buckle plate; 405, threaded rod; 406, nut; 407, clamping groove. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figures 1-4 A compressed air foam generating structure device, comprising a foam mixed solution delivery pipe 100, a compressed air injection pipe 200, a mixed pipe 300 and an arc plate one 400:

[0027] A foam mixture delivery pipe 100 has a foam mixture inlet 101 at one end. A compressed air injection pipe 200 is located inside the foam mixture delivery pipe 100. A valve 202 is fixedly connected to the end of the compressed air injection pipe 200. A pressure gauge 204 is fixedly installed on the valve 202. Several diffuser holes 201 are provided on the surface of the compressed air injection pipe 200. A guide plate 102 is fixedly connected to the inner wall of the foam mixture delivery pipe 100. A mixing pipe 300 is located at one end of the foam mixture delivery pipe 100. A flow deflector 301 is provided inside the mixing pipe 300. Multiple mixing paddles 303 are provided at one end of the flow deflector 301. An arc plate 400 is provided at the connection between the foam mixture delivery pipe 100 and the mixing pipe 300. A throat 304 is fixedly connected to the end of the mixing pipe 300 away from the foam mixture delivery pipe 100.

[0028] Compressed air is injected into the compressed air injection pipe 200. The pressure gauge 204 monitors the injection pressure of the compressed air. The injected compressed air is sprayed out from the diffuser 201. The diffusion through the small holes increases the contact area between the compressed air and the foam mixture. This not only improves the gas-liquid stratification phenomenon caused by the large amount of foam mixture accumulating at the bottom of the foam mixture delivery pipe 100 due to gravity, but also avoids the vibration of the device caused by the airlock flow pattern generated by the concentrated injection of a large amount of gas. The cooperation between the turbulence diffuser 301 and the mixing paddle 303 provides the effect of collision, fusion, breaking up and agglomerating the compressed air and the foam mixture. The mixing paddle 303 performs in-depth vortex stirring of the initially mixed ternary two-phase medium. The vigorous mixing process makes the mixing more complete, the foaming rate higher, and the mixing effect better. The use of the arc plate 400 makes it easy to disassemble the foam mixture delivery pipe 100 and the mixing pipe 300, which facilitates the cleaning of the inside of the foam mixture delivery pipe 100 and the mixing pipe 300.

[0029] For further optimization, please refer to Figure 1 , Figure 2 A compressed air injection port 203 is fixedly connected to the top of valve 202. The orientation of the diffuser 201 is consistent with the position of the foam mixture inlet 101. The end of the compressed air injection pipe 200 is closed. The injected compressed air is sprayed out from the diffuser 201 and diffuses through the small hole. This increases the contact area between the compressed air and the foam mixture, which not only improves the gas-liquid stratification phenomenon caused by the large amount of foam mixture accumulating at the bottom of the foam mixture delivery pipe 100 due to gravity, but also avoids the vibration of the device caused by the airlock flow pattern generated by the concentrated injection of a large amount of gas.

[0030] For further optimization, please refer to Figure 1 , Figure 2 The positions of the deflector 102 and the spoiler 301 are corresponding.

[0031] For further optimization, please refer toFigure 1 、 Figure 3 The spoiler 301 is fixedly connected with the inner wall of the mixing pipe 300 through the connecting piece 302, the mixing paddle 303 is rotatably connected with one end of the spoiler 301 through a rotating shaft, and the paddle blades of the plurality of groups of mixing paddles 303 are different in deflection direction. The compressed air and the foam mixing liquid are collided and mixed, the effect of crushing and mixing is achieved, the mixing paddle 303 performs deep vortex stirring on the ternary two-phase medium after initial mixing, and the mixing process is violent, so that the mixing is more sufficient, the foaming rate is high, and the mixing effect is better.

[0032] Further preferably, referring to Figure 1 、 Figure 4 One end of the mixing pipe 300 is fixedly connected with a rubber sleeve, the rubber sleeve is sleeved at the end of the foam mixing liquid conveying pipe 100, the arc plate one 400 is arranged on the surface of the rubber sleeve, one end of the arc plate one 400 is rotatably connected with the arc plate two 401, one end of the arc plate two 401 is rotatably connected with the arc plate three 402, the side surface of the arc plate three 402 is fixedly connected with the threaded rod 405, the surface of the threaded rod 405 is threadedly connected with the nut 406, the other end of the arc plate one 400 is rotatably connected with the arc frame 403, one end of the arc frame 403 is rotatably connected with the buckle plate 404, the edge of the buckle plate 404 is provided with the clamping groove 407, and the side surface of the nut 406 and the clamping groove 407 abuts. The closed loop formed by the arc plate one 400, the arc plate two 401, the arc plate three 402, the arc frame 403 and the buckle plate 404 has a reduced inner diameter, so that the rubber sleeve is locked on the surface of the foam mixing liquid conveying pipe 100, meanwhile, the threaded rod 405 is clamped in the clamping groove 407, the nut 406 is tightened to make the inner side surface of the buckle plate 404 and the outer side surface of the arc plate three 402 abut, the position of the buckle plate 404 is fixed, the buckle plate 404 is prevented from being buckled, the foam mixing liquid conveying pipe 100 and the mixing pipe 300 are assembled together, and the interior thereof is convenient to clean.

[0033] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model.

[0034] In the utility model, unless another definite provision and limitation, the term "installation", "arrangement", "connection", "fixation", "screw connection" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for the ordinary skill of the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0035] Although the embodiments of the utility model have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A compressed air foam generating structure device, comprising a foam mixture delivery pipe (100), a compressed air injection pipe (200), a mixing pipe (300), and an arc plate (400), characterized in that: One end of the foam mixture delivery pipe (100) is provided with a foam mixture inlet (101). The compressed air injection pipe (200) is disposed inside the foam mixture delivery pipe (100). A valve (202) is fixedly connected to the end of the compressed air injection pipe (200). A pressure gauge (204) is fixedly installed on the valve (202). A plurality of diffuser holes (201) are provided on the surface of the compressed air injection pipe (200). The inner wall of the foam mixture delivery pipe (100) is fixed. A guide plate (102) is connected to the mixing pipe (300), which is located at one end of the foam mixture delivery pipe (100). A baffle (301) is provided inside the mixing pipe (300), and a plurality of mixing paddles (303) are provided at one end of the baffle (301). An arc plate (400) is provided at the connection between the foam mixture delivery pipe (100) and the mixing pipe (300). A throat (304) is fixedly connected to the end of the mixing pipe (300) away from the foam mixture delivery pipe (100).

2. The compressed air foam generating structure device according to claim 1, characterized in that: The valve (202) is fixedly connected to a compressed air injection port (203) at its top end. The direction of the diffuser (201) is consistent with the position of the foam mixture inlet (101). The end of the compressed air injection pipe (200) is closed.

3. The compressed air foam generating structure device according to claim 1, characterized in that: The position of the guide plate (102) corresponds to that of the spoiler (301).

4. The compressed air foam generating structure device according to claim 1, characterized in that: The spoiler (301) is fixedly connected to the inner wall of the mixing tube (300) via a connector (302), and the mixing blade (303) is rotatably connected to one end of the spoiler (301) via a rotating shaft. The blades of the multiple mixing blades (303) have different deflection directions.

5. The compressed air foam generating structure device according to claim 1, characterized in that: A rubber sleeve is fixedly connected to one end of the mixing pipe (300), and the rubber sleeve is sleeved on the end of the foam mixture delivery pipe (100). The arc plate (400) is disposed on the surface of the rubber sleeve.

6. The compressed air foam generating structure device according to claim 1, characterized in that: One end of the first arc plate (400) is rotatably connected to the second arc plate (401), and one end of the second arc plate (401) is rotatably connected to the third arc plate (402). A threaded rod (405) is fixedly connected to the side of the third arc plate (402), and a nut (406) is threadedly connected to the surface of the threaded rod (405). The other end of the first arc plate (400) is rotatably connected to the arc frame (403), and one end of the arc frame (403) is rotatably connected to the buckle plate (404). A slot (407) is provided on the edge of the buckle plate (404), and the nut (406) abuts against the side of the slot (407).

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