Gas-liquid mixing device and foam system
By designing a gas-liquid mixing device including mixer precursor, mixer backbody, connector and foaming net, the problems of poor mixing effect and low foaming ratio in the prior art are solved, and efficient water, The foam and air mix significantly improve the fire extinguishing effect.
Patent Information
- Application Number
- CN202420437649.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The gas-liquid mixing device in the existing foam system has poor mixing effect and low foaming multiple, which affects the fire extinguishing effect.
A gas-liquid mixing device is designed, including a mixer precursor, a mixer rear body, a connector and a foaming net. By thoroughly mixing water, foam and air for multiple times, the mixing effect and foaming multiple are improved.
It realizes efficient mixing of high-flow foam and air, significantly improves the mixing effect and mixing quality, and enhances the fire extinguishing effect.
Smart Images
Figure CN222445230U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a gas-liquid mixing device and a foam system. Background Art
[0002] As one of the necessary vehicles for petroleum and petrochemical fire fighting, the large-flow compressed air foam high-lift jet fire truck effectively mixes foam liquid, water and air to form the physical properties of the foam mixture, which is an important factor affecting the fire fighting effect. A large number of experiments have proved that the foam liquid with a specific foaming multiple has a significant effect on the suffocation and cooling of the fire. At the same time, the foaming multiple is also one of the important performance assessment indicators for compressed air foam fire trucks, foam fire trucks and other models tested by the Fire Equipment Quality Supervision and Inspection Center.
[0003] The inventors have discovered that due to complex pipeline structures, a single mixing structure, and a small number of mixing times, the gas-liquid mixing device in the existing foam system has technical problems such as poor mixing effect and low foaming multiple, which affects the fire extinguishing effect. Utility Model Content
[0004] The utility model aims to provide a gas-liquid mixing device and a foam system, which can fully mix foam liquid, water and air for multiple times, have a simple structure and a good fire extinguishing effect.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In the first aspect, the utility model provides a gas-liquid mixing device, comprising a mixer front body, a mixer rear body, a connecting piece and a foaming net; the mixer front body is connected to the mixer rear body, a compressed air injection port is provided on the side of the mixer front body, the foaming net is arranged in the mixer rear body, and is connected to the compressed air injection port through the connecting piece.
[0007] In an optional embodiment, the mixer precursor is divided into a first section of a circular tube and a second section of a circular tube along the flow direction of water and foam, and the inner diameter of the first section of the circular tube and the inner diameter of the second section of the circular tube form a step.
[0008] In an optional embodiment, the mixer rear body is divided into a third section of circular tube and a fourth section of circular tube along the flow direction of water and foam, and the inner diameter of the third section of circular tube forms a step with the inner diameter of the fourth section of circular tube.
[0009] In an optional embodiment, a plurality of foaming holes are arranged on the foaming net.
[0010] In an optional embodiment, the foaming net is shaped like a truncated cone, and is arranged in the mixer rear body along the flow direction of water and foam, and an end of the foaming net with a smaller diameter is connected to the connecting piece.
[0011] In an optional embodiment, the connecting piece and the foaming net are threadedly connected.
[0012] In an optional embodiment, the mixer front body and the mixer rear body are connected by bolts.
[0013] In an optional embodiment, the gas-liquid mixing device further includes a base, and the base is arranged at the compressed air injection port.
[0014] In an optional embodiment, the mixer front body and the mixer rear body are made of alloy steel.
[0015] In a second aspect, the utility model provides a foam system, comprising a gas-liquid mixing device as described in any one of the above items.
[0016] The beneficial effects of the embodiments of the utility model are:
[0017] The utility model provides a gas-liquid mixing device, comprising a mixer front body, a mixer rear body, a connecting piece and a foaming net; the mixer front body is connected to the mixer rear body, a compressed air injection port is arranged on the side of the mixer front body, and the foaming net is arranged in the mixer rear body and connected to the compressed air injection port through the connecting piece. The utility model is a special device that can achieve large-flow foam and air mixing. When water and foam pass through the mixer front body into the mixer rear body, they impact the connecting piece, so that the water and foam are mixed. The mixed liquid continues to flow forward, and after reaching the foaming net, the water, foam and compressed air are mixed again to achieve liquid-gas mixing, which greatly improves the mixing effect and mixing quality and enhances the fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of a gas-liquid mixing device provided in an embodiment of the utility model;
[0020] Figure 2 A schematic cross-sectional view of a gas-liquid mixing device provided in an embodiment of the utility model.
[0021] icon:
[0022] 10-mixer front body; 11-compressed air injection port; 12-first section of the round tube; 13-second section of the round tube; 20-mixer rear body; 21-third section of the round tube; 22-fourth section of the round tube; 30-connecting piece; 40-foaming net; 41-foaming hole; 50-base. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] A foam system provided in this embodiment is mainly used in fire-fighting facilities such as fire trucks and fire-fighting equipment. In order to solve the problem that the mixing device in the prior art has poor mixing effect, low foaming multiple and affects the fire-fighting effect, this embodiment provides a gas-liquid mixing device, which is specifically as follows.
[0030] like Figure 1 and Figure 2 As shown, the gas-liquid mixing device provided in this embodiment includes a mixer front body 10, a mixer rear body 20, a connecting piece 30 and a foaming net 40; the mixer front body 10 is connected to the mixer rear body 20, a compressed air injection port 11 is arranged on the side of the mixer front body 10, and the foaming net 40 is arranged in the mixer rear body 20 and connected to the compressed air injection port 11 through the connecting piece 30. In detail, after the mixer front body 10 and the mixer rear body 20 are connected together, a mixing chamber is formed inside, water and foam enter from the water and foam injection port on the mixer front body 10, and are discharged from the outlet on the mixer rear body 20, the water and foam are mixed in the mixing chamber through the connecting piece 30, and the water, foam and compressed air are mixed again through the foaming net 40.
[0031] It can be understood that the present embodiment is a special device that can achieve large-flow foam and air mixing. When water and foam pass through the mixer front body 10 into the mixer rear body 20, they impact the connecting piece 30, so that the water and foam are mixed. The mixed liquid continues to flow forward, and after reaching the foaming net 40, the water, foam and compressed air are mixed again to achieve liquid-gas mixing, which greatly improves the mixing effect and mixing quality and enhances the fire extinguishing effect.
[0032] In addition, in this embodiment, the shape of the connecting member 30 is a curved circular tube, and the two ends are respectively connected to the foaming net 40 and the compressed air injection port 11, but this embodiment does not limit the shape of the connecting member 30 to a curved circular tube. Anything with the same effect is within the protection scope of this embodiment.
[0033] In a preferred embodiment, the mixer front body 10 is divided into a first section of circular tube 12 and a second section of circular tube 13 along the flow direction of water and foam, and the inner diameter of the first section of circular tube 12 forms a step with the inner diameter of the second section of circular tube 13. Specifically, the first section of circular tube 12 and the second section of circular tube 13 are manufactured by an integrated molding process, the inner diameter of the first section of circular tube 12 is smaller than the inner diameter of the second section of circular tube 13, and there is a smooth transition between the two.
[0034] It is understandable that after water and foam are injected from the first section of the circular tube 12, when passing through the step between the first section of the circular tube 12 and the second section of the circular tube 13, the pressure is suddenly released, and the water and foam are mixed.
[0035] In a preferred embodiment, the mixer rear body 20 is divided into a third section of circular tube 21 and a fourth section of circular tube 22 along the flow direction of water and foam, and the inner diameter of the third section of circular tube 21 forms a step with the inner diameter of the fourth section of circular tube 22. In detail, the third section of circular tube 21 and the fourth section of circular tube 22 are also made by an integrated molding process, and the inner diameter of the third section of circular tube 21 is greater than the inner diameter of the second section of circular tube 13. In this embodiment, the inner diameter of the first section of circular tube 12 is the same as the inner diameter of the fourth section of circular tube 22, and the inner diameter of the second section of circular tube 13 is the same as the inner diameter of the third section of circular tube 21.
[0036] It can be understood that after the water, foam and compressed air are fully mixed after passing through the foaming net 40, the pressure suddenly increases when passing through the step between the third section of the circular tube 21 and the third section of the circular tube 21, and the water, foam and compressed air are mixed again, and the high-pressure foam formed by the mixture is sprayed out from the fourth section of the circular tube 22.
[0037] It is worth noting that the gas-liquid mixing device provided in this embodiment undergoes a total of four mixings. The first mixing occurs when the water and foam pass through the step between the first section of the circular tube 12 and the second section of the circular tube 13. The second mixing occurs when the mixed liquid impacts the connecting piece 30. The water, foam and compressed air then form a third mixing on the foaming net 40. Finally, the fourth mixing occurs when the mixed liquid passes through the step between the third section of the circular tube 21 and the fourth section of the circular tube 22.
[0038] In a preferred embodiment, a plurality of foaming holes 41 are provided on the foaming net 40. It can be understood that the foaming holes 41 are mainly used to pass water and foam to improve the mixing effect of water, foam and compressed air.
[0039] In a preferred embodiment, the foaming net 40 is truncated cone-shaped and is disposed in the mixer rear body 20 along the flow direction of water and foam, and the end with a smaller diameter on the foaming net 40 is connected to the connecting member 30. It is understood that the foaming net 40 is designed in a conical shape to ensure the flow area.
[0040] In a preferred embodiment, the connector 30 and the foaming net 40 are threadedly connected. It is understandable that the threaded connection facilitates the disassembly and installation of the connector 30 and the foaming net 40. In some other embodiments, the connection can also be made in the form of a buckle, and the specific method is not limited in this embodiment.
[0041] In a preferred embodiment, the mixer front body 10 and the mixer rear body 20 are connected by bolts. In detail, a plurality of bolts are arranged at the connection between the mixer front body 10 and the mixer rear body 20, and the plurality of bolts are arranged equidistantly, so that the mixer front body 10 and the mixer rear body 20 can be easily disassembled and repaired by the bolts.
[0042] In a preferred embodiment, the gas-liquid mixing device further comprises a base 50, and the base 50 is arranged at the compressed air injection port 11. It can be understood that the purpose of arranging the base 50 is to facilitate connection with external pipelines.
[0043] Furthermore, the mixer front body 10 and the mixer rear body 20 of this embodiment are made of alloy steel. It is understood that alloy steel can effectively resist corrosion and oxidation, especially when its surface is treated, it can prevent corrosion in different environments.
[0044] The gas-liquid mixing device provided in this embodiment has the following advantages:
[0045] This embodiment is a special device that can achieve large-flow foam and air mixing. When water and foam pass through the mixer front body 10 and the mixer rear body 20, they impact the connecting piece 30, so that the water and foam are mixed. The mixed liquid continues to flow forward. After reaching the foaming net 40, the water, foam and compressed air are mixed again to achieve liquid-gas mixing, which greatly improves the mixing effect and mixing quality and enhances the fire extinguishing effect.
[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A gas-liquid mixing device, characterized in that: It includes a mixer front body, a mixer rear body, a connecting piece and a foaming net; the mixer front body is connected to the mixer rear body, a compressed air injection port is arranged on the side of the mixer front body, and the foaming net is arranged in the mixer rear body and connected to the compressed air injection port through the connecting piece.
2. A gas-liquid mixing device according to claim 1, characterized in that: The mixer front body is divided into a first section of circular tube and a second section of circular tube along the flow direction of water and foam, and the inner diameter of the first section of circular tube and the inner diameter of the second section of circular tube form a step.
3. A gas-liquid mixing device according to claim 1, characterized in that: The mixer rear body is divided into a third section of circular tube and a fourth section of circular tube along the flow direction of water and foam, and the inner diameter of the third section of circular tube forms a step with the inner diameter of the fourth section of circular tube.
4. A gas-liquid mixing device according to claim 1, characterized in that: The foaming net is provided with a plurality of foaming holes.
5. A gas-liquid mixing device according to claim 1, characterized in that: The foaming net is in the shape of a truncated cone and is arranged in the mixer rear body along the flow direction of water and foam. An end of the foaming net with a smaller diameter is connected to the connecting piece.
6. A gas-liquid mixing device according to claim 1, characterized in that: The connecting piece and the foaming net are threadedly connected.
7. A gas-liquid mixing device according to claim 1, characterized in that: The mixer front body and the mixer rear body are connected by bolts.
8. A gas-liquid mixing device according to claim 1, characterized in that: The gas-liquid mixing device further comprises a base, and the base is arranged at the compressed air injection port.
9. A gas-liquid mixing device according to claim 1, characterized in that: The mixer front body and the mixer rear body are made of alloy steel.
10. A foam system, characterized in that: A gas-liquid mixing device comprising any one of claims 1 to 9.