CN219700917U - Foam proportion mixing arrangement - Google Patents

Abstract

The utility model provides a foam proportion mixing device, which relates to the field of fire-fighting equipment and comprises a mixing cylinder, a water flow baffle, a foam baffle and a water flow conduit; the water flow baffle and the foam baffle are arranged inside the mixing cylinder, and the mixing cylinder is sequentially divided into a water flow cavity, a foam cavity and a mixing cavity along the water flow injection direction; the periphery wall of the foam cavity is provided with a foam injection port, the foam baffle is provided with a foam mixing port, and foam liquid flows into the foam cavity from the foam injection port and then flows into the mixing cavity from the foam mixing port; the water flow guide pipe is arranged in the foam cavity and is communicated with the water flow cavity and the mixing cavity, water flows into the water flow cavity from the water flow injection port of the mixing cylinder body, flows into the mixing cavity through the water flow guide pipe and flows out from the mixed liquid output port of the mixing cylinder body after being mixed with the foam. The utility model can reduce the pressure loss in the mixing process and fully mix the water and the foam liquid.

Description

Foam proportion mixing arrangement

Technical Field

The utility model relates to the field of fire-fighting equipment, in particular to a foam proportion mixing device.

Background

The foam proportion mixing device is an extremely important component of the foam fire extinguishing system, and the quality of the working performance of the foam proportion mixing device is directly related to the success or failure of the foam fire extinguishing system to extinguish fire. The foam proportion mixing device is of the types of a pressure type air foam proportion mixing device, a ring pump type foam proportion mixing device, a pipeline type foam proportion mixing device and the like. The foam fire extinguishing system has the characteristics of safety, reliability, economy, practicability, high fire extinguishing efficiency and the like, particularly has outstanding superiority for extinguishing B-type fires, and is a basic extinguishing mode for domestic and foreign oil-type fires.

The inventor researches show that the traditional high-pressure foam proportional mixing device at present has overlarge pressure loss in the water flow direction due to the fact that the foam injection direction is perpendicular to the water flow direction or an included angle exists, and some foam proportional mixing devices cannot sufficiently mix water and foam liquid.

Disclosure of Invention

The utility model aims to provide a foam proportion mixing device which can reduce pressure loss in the mixing process and fully mix water and foam liquid.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the present utility model provides a foam proportioning device comprising a mixing bowl, a water flow baffle, a foam baffle, and a water flow conduit; the water flow baffle and the foam baffle are arranged inside the mixing cylinder, and the mixing cylinder is sequentially divided into a water flow cavity, a foam cavity and a mixing cavity along the water flow injection direction;

a foam injection port is formed in the peripheral wall of the foam cavity, a foam mixing port is formed in the foam baffle, and foam liquid flows into the foam cavity from the foam injection port and then flows into the mixing cavity from the foam mixing port;

the water flow guide pipe is arranged in the foam cavity and is communicated with the water flow cavity and the mixing cavity, water flows into the water flow cavity from the water flow injection opening of the mixing cylinder body, flows into the mixing cavity through the water flow guide pipe, is mixed with foam liquid and flows out from the mixed liquid output opening of the mixing cylinder body.

In an alternative embodiment, a plurality of said foam mixing ports are provided on said foam deck, wherein at least one of said foam mixing ports is located at the center of said foam deck.

In an alternative embodiment, the foam proportional mixing device comprises a plurality of water flow conduits, the water flow conduits are in one-to-one correspondence with the foam mixing ports, one ends of the water flow conduits are connected to the water flow baffle, and the other ends of the water flow conduits are suspended in the foam mixing ports.

In an alternative embodiment, the foam proportioning device further comprises a diversion mixing block, wherein the diversion mixing block is arranged in the mixing cavity and is internally provided with a diversion hole penetrating along the water flow direction.

In an alternative embodiment, the inner wall of the diversion hole is provided with a diversion surface, and the diversion surface is conical and is from large to small along the flow direction of the mixed liquid.

In an alternative embodiment, the flow guiding mixing block is further provided with a plurality of flow guiding small holes penetrating along the flow direction of the mixed liquid, and the plurality of flow guiding small holes are uniformly arranged on the inner wall of the flow guiding hole.

In an alternative embodiment, the foam proportioning device further comprises a foam conduit disposed over the foam injection port.

In an alternative embodiment, the foam conduit comprises a tube body and a flow orifice plate, one end of the tube body is connected with the foam injection port, the other end of the tube body is connected with the flow orifice plate, and the flow orifice plate is used for controlling the input amount of foam liquid.

In an alternative embodiment, flanges are arranged at two ends of the mixing cylinder, and a plurality of bolt holes are arranged on the flanges.

In an alternative embodiment, the mixing drum wall thickness is 3 to 10mm.

The embodiment of the utility model has the beneficial effects that:

the utility model provides a foam proportion mixing device which comprises a mixing cylinder, a water flow baffle, a foam baffle and a water flow conduit, wherein the mixing cylinder is provided with a water inlet; the water flow baffle and the foam baffle are arranged inside the mixing cylinder, and the mixing cylinder is sequentially divided into a water flow cavity, a foam cavity and a mixing cavity along the water flow injection direction; the periphery wall of the foam cavity is provided with a foam injection port, the foam baffle is provided with a foam mixing port, and foam liquid flows into the foam cavity from the foam injection port and then flows into the mixing cavity from the foam mixing port; the water flow guide pipe is arranged in the foam cavity and is communicated with the water flow cavity and the mixing cavity, water flows into the water flow cavity from the water flow injection port of the mixing cylinder body, flows into the mixing cavity through the water flow guide pipe and flows out from the mixed liquid output port of the mixing cylinder body after being mixed with the foam. In the utility model, water flows into the water flow cavity through one end of the mixing cylinder, flows into the mixing cavity through the water flow conduit, foam liquid flows into the foam cavity through the foam injection opening, flows into the mixing cavity through the foam mixing opening, is fully mixed with water in the mixing cavity, and then reaches the mixed liquid output port. Under the effect of rivers baffle and rivers pipe, the foam liquid does not take place to contact with water when injecting into mixing barrel, simultaneously because the foam liquid needs the contact rivers pipe at the in-process of injecting into mixing barrel, can cause a large amount of energy losses, the buffering in foam chamber again, so that the foam liquid is when reaching mixing chamber, the impact force of the vertical direction that does not have, in addition, when the foam liquid dashes the foam mixing mouth and reaches mixing chamber, the flow direction and the rivers direction of foam liquid are unanimous, great reduction the loss of rivers direction pressure, make water and foam liquid abundant mix, when improving the efficiency of putting out a fire, material and resource have been saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a high pressure foam proportioning device according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a high-pressure foam proportional mixing device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a flow-guiding mixing block according to an embodiment of the present utility model;

fig. 4 is a schematic view of a foam catheter according to an embodiment of the present utility model.

Icon:

100-mixing cylinder; 110-a water flow chamber; 120-foam chambers; 130-a mixing chamber; 140-foam injection port; 150-water flow injection port; 160-a mixed liquor output port; 200-a water flow baffle; 300-foam baffle; 310-foam mixing port; 400-water flow conduit; 500-a diversion mixing block; 510-deflector holes; 511-a flow-guiding surface; 520-diversion pores; 600-foam conduit; 610-tube body; 620-flow orifice plate; 700-flange.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, the high-pressure foam proportioning device provided in this embodiment includes a mixing cylinder 100, a water flow baffle 200, a foam baffle 300 and a water flow conduit 400; the water flow baffle 200 and the foam baffle 300 are both disposed inside the mixing drum 100, and divide the mixing drum 100 into a water flow chamber 110, a foam chamber 120 and a mixing chamber 130 in sequence along the injection direction of water flow; the foam injection port 140 is arranged on the peripheral wall of the foam cavity 120, the foam baffle 300 is provided with the foam mixing port 310, and foam liquid flows into the foam cavity 120 from the foam injection port 140 and then flows into the mixing cavity 130 from the foam mixing port 310; the water flow conduit 400 is disposed in the foam chamber 120 and is communicated with the water flow chamber 110 and the mixing chamber 130, and water flows into the water flow chamber 110 from the water flow injection port 150 of the mixing cylinder 100, flows into the mixing chamber 130 through the water flow conduit 400, is mixed with foam liquid, and flows out from the mixed liquid output port 160 of the mixing cylinder 100.

In detail, the mixing cylinder 100, the water flow baffle 200, the foam baffle 300 and the water flow conduit 400 are all made of 304 stainless steel, have high strength, the wall thickness of the water flow baffle 200, the foam baffle 300 and the water flow conduit 400 is between 10 and 15mm, and the wall thickness of the mixing cylinder 100 is 3 to 10mm, so that the requirements of high-pressure pipelines can be met, and the mixing cylinder can also be used for low-pressure and medium-pressure pipelines.

It will be appreciated that in this embodiment, water flows into the water flow chamber 110 through one end of the mixing drum 100 and into the mixing chamber 130 through the water flow conduit 400, foam liquid flows into the foam chamber 120 through the foam injection port 140 and into the mixing chamber 130 through the foam mixing port 310, and the foam liquid is thoroughly mixed with water in the mixing chamber 130 and then reaches the mixture outlet 160. Under the action of the water flow baffle 200 and the water flow guide pipe 400, the foam liquid is not contacted with water when being injected into the mixing cylinder 100, and meanwhile, a great amount of energy is lost due to the fact that the foam liquid needs to be contacted with the water flow guide pipe 400 in the process of being injected into the mixing cylinder 100, and then the foam liquid passes through the buffering of the foam cavity 120, so that the foam liquid does not have impact force in the vertical direction when reaching the mixing cavity 130, in addition, when the foam liquid rushes into the foam mixing opening 310 to reach the mixing cavity 130, the flow direction of the foam liquid is consistent with the water flow direction, the loss of the pressure in the water flow direction is greatly reduced, the water and the foam liquid are fully mixed, the fire extinguishing efficiency is improved, and meanwhile, materials and resources are saved.

Specifically, the foam deck 300 is provided with a plurality of foam mixing ports 310, wherein at least one foam mixing port 310 is located at the center of the foam deck 300. In detail, one of the foam mixing ports 310 is located at the center of the foam deck 300, and the remaining foam mixing ports 310 are uniformly arranged in a circle around the foam mixing ports 310 at the center, it will be understood that a plurality of foam mixing ports 310 may increase the addition amount of the foam liquid.

The high-pressure foam proportional mixing device comprises a plurality of water flow conduits 400, wherein the water flow conduits 400 are in one-to-one correspondence with the foam mixing ports 310, one end of each water flow conduit 400 is connected to the water flow baffle 200, and the other end of each water flow conduit 400 is suspended in the foam mixing port 310. In detail, the foam mixing port 310 is circular, and the caliber of the foam mixing port 310 is larger, so that one end of the water flow conduit 400 is conveniently suspended in the foam mixing port 310, and at this time, foam liquid flows out from a gap between the foam mixing port 310 and the water flow conduit 400, so that in other embodiments, the mixing ratio of the foam liquid and water can be controlled by controlling the gap between the foam mixing port 310 and the water flow conduit 400, thereby meeting the fire extinguishing requirement.

It will be appreciated that the flow of water may enter the mixing chamber 130 from the plurality of water flow conduits 400, and that the foam liquid may also enter the mixing chamber 130 from the plurality of foam mixing ports 310 to mix with the water, increasing the throughput of the mixed liquid, and the co-operation of the plurality of water flow conduits 400 and the foam mixing ports 310 provides for more thorough mixing of the foam liquid with the water.

It will be appreciated that the purpose of suspending one end of the water flow conduit 400 in the foam mixing port 310 is to reduce the loss of water flow pressure in order to make the foam liquid conform to the direction of water flow after exiting the foam mixing port 310, and to ensure that the position of the foam liquid after exiting the foam mixing port 310 conforms to the water flow, thereby improving the mixing of the water flow and the foam liquid.

As shown in fig. 3, further, the high-pressure foam proportioning device further includes a flow-guiding mixing block 500, and the flow-guiding mixing block 500 is disposed in the mixing chamber 130 and has a flow-guiding hole 510 penetrating in the water flow direction therein. In detail, the material of the flow guiding mixing block 500 is 304 stainless steel, the flow guiding mixing block 500 is disposed at the rear half of the mixing chamber 130, the front half of the mixing chamber 130 is used for primarily mixing foam liquid with water, and the rear half of the mixing chamber is provided with the flow guiding mixing block 500 for deep mixing foam liquid with water.

Specifically, the inner wall of the diversion hole 510 is provided with a diversion surface 511, and the diversion surface 511 is conical and is from large to small along the flow direction of the mixed liquid. It will be appreciated that the flow guiding surface 511 of the flow guiding mixing block 500 is tapered, so that after the water and the foam enter the mixing cavity 130, the flow direction of the raw water flow and the foam is changed, and the foam and the water are gathered together toward the center at the same time to achieve full mixing.

Further, the diversion mixing block 500 is further provided with a plurality of diversion small holes 520 penetrating along the flow direction of the mixed liquid, and the diversion small holes 520 are uniformly arranged on the inner wall of the diversion hole 510. It will be appreciated that the small flow-guiding holes 520 are used in combination with the flow-guiding holes 510 in order to minimize pressure loss and prevent the formation of high-speed jet flow, and vacuum is formed at the rear end of the flow-guiding mixing block 500, so that the flow-guiding mixing block 500 is circumferentially provided with through holes, so that most of the mixed liquid flows through the large central holes and a small part flows through the small flow-guiding holes 520 on the flow-guiding surface 511. Thus, the materials can be fully mixed, and the pressure loss is reduced to the greatest extent.

As shown in fig. 4, the high-pressure foam proportioning device provided in this embodiment further includes a foam duct 600, and the foam duct 600 is disposed on the foam injection port 140. It will be appreciated that the function of the foam conduit 600 is to facilitate connection of the high pressure foam proportioner to the external foam production equipment, and that the flange 700 is provided at the end of the foam conduit 600 remote from the foam injection port 140, which is convenient for connection and has high versatility.

Specifically, the foam conduit 600 includes a tube 610 and a flow orifice 620, one end of the tube 610 is connected to the foam injection port 140, the other end is connected to the flow orifice 620, and the flow orifice 620 is used for controlling the input amount of the foam liquid. It will be appreciated that the aperture size of the flow orifice 620 may be adjusted, so that the injection amount of the foam liquid may be controlled by the aperture size of the flow orifice 620, the larger the aperture, the larger the amount of foam liquid injected, the smaller the aperture, the smaller the injection amount of foam liquid, and the smaller the foam liquid mixing ratio.

In addition, the mixing cylinder 100 in this embodiment is provided with flanges 700 at both ends, and the flanges 700 are provided with a plurality of bolt holes. It can be appreciated that the flange 700 is convenient to connect in structure and high in universality.

The foam proportion mixing device provided by the embodiment has the following advantages:

in this embodiment, water flows into the water flow chamber 110 through one end of the mixing drum 100 and enters the mixing chamber 130 through the water flow conduit 400, foam liquid enters the foam chamber 120 through the foam injection port 140 and enters the mixing chamber 130 through the foam mixing port 310, and the foam liquid is fully mixed with water in the mixing chamber 130 and then reaches the mixed liquid output port 160. Under the action of the water flow baffle 200 and the water flow conduit 400, the foam liquid is not contacted with water when being injected into the mixing cylinder 100, and meanwhile, a great amount of energy is lost due to the fact that the foam liquid needs to be contacted with the water flow conduit 400 in the process of being injected into the mixing cylinder 100, and then the foam liquid passes through the buffering of the foam cavity 120, so that the foam liquid does not have impact force in the vertical direction when reaching the mixing cavity 130, in addition, when the foam liquid rushes into the foam mixing opening 310 to reach the mixing cavity 130, the flow direction of the foam liquid is consistent with the water flow direction, the loss of the pressure in the water flow direction is greatly reduced, the water and the foam liquid are fully mixed, the fire extinguishing efficiency is improved, and meanwhile, materials and resources are saved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The foam proportion mixing device is characterized by comprising a mixing cylinder, a water flow baffle, a foam baffle and a water flow conduit; the water flow baffle and the foam baffle are arranged inside the mixing cylinder, and the mixing cylinder is sequentially divided into a water flow cavity, a foam cavity and a mixing cavity along the water flow injection direction;

a foam injection port is formed in the peripheral wall of the foam cavity, a foam mixing port is formed in the foam baffle, and foam liquid flows into the foam cavity from the foam injection port and then flows into the mixing cavity from the foam mixing port;

the water flow guide pipe is arranged in the foam cavity and is communicated with the water flow cavity and the mixing cavity, water flows into the water flow cavity from the water flow injection opening of the mixing cylinder body, flows into the mixing cavity through the water flow guide pipe, is mixed with foam liquid and flows out from the mixed liquid output opening of the mixing cylinder body.

2. A foam proportioning device as set forth in claim 1 wherein said foam baffle is provided with a plurality of said foam mixing ports, wherein at least one of said foam mixing ports is located at the center of said foam baffle.

3. The foam proportioning device of claim 2, wherein the foam proportioning device comprises a plurality of water flow conduits, the water flow conduits are in one-to-one correspondence with the foam mixing ports, one end of each water flow conduit is connected to the water flow baffle, and the other end of each water flow conduit is suspended in the foam mixing port.

4. The apparatus of claim 1, further comprising a deflector mixing block disposed in the mixing chamber and having deflector holes extending therethrough in the direction of water flow.

5. The apparatus of claim 4, wherein the inner wall of the flow guide hole has a flow guide surface, and the flow guide surface is tapered and is from large to small in the flow direction of the mixed liquid.

6. The foam proportioning device of claim 4, wherein the flow-guiding mixing block further comprises a plurality of flow-guiding small holes penetrating along the flow direction of the mixed liquid, and the plurality of flow-guiding small holes are uniformly arranged on the inner wall of the flow-guiding hole.

7. The foam proportioning device of claim 1, further comprising a foam conduit disposed over the foam injection port.

8. The foam proportioning device of claim 7, wherein the foam conduit comprises a tube body and a flow orifice plate, one end of the tube body is connected to the foam injection port, the other end is connected to the flow orifice plate, and the flow orifice plate is used for controlling the input amount of foam liquid.

9. The foam proportioning device of claim 1, wherein flanges are provided at both ends of the mixing cylinder, and wherein a plurality of bolt holes are provided in the flanges.

10. A foam proportioning device as in claim 1 wherein said mixing bowl has a wall thickness of 3 to 10mm.