Gas-liquid mixer for compressed air foam fire extinguishing equipment
By adopting a design that combines a main and auxiliary mixer with three ejector channels in the foam fire extinguishing equipment, the problems of pressure imbalance and high cost during gas-liquid mixing are solved, achieving efficient and uniform foam mixing and reducing equipment disturbance and cost.
Patent Information
- Application Number
- CN202423256402.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-29
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-29
AI Technical Summary
Existing foam fire extinguishing equipment has high costs for gas and liquid flow regulation, and pressure imbalance during mixing causes disturbances in the mixer, affecting the mixing effect. Furthermore, the premixed foam liquid is prone to deterioration.
The system employs a horizontally placed main mixer and a vertically placed auxiliary mixer, combined with three ejector channels, to achieve smooth gas-liquid mixing and pressure balance. The system achieves three-stage mixing through a flow regulating pump and ejector channels, reducing pressure shocks.
It improves the uniformity and mixing effect of foam liquid, reduces costs, has a simple structure, is easy to operate, reduces disturbance to the mixer, and ensures the stability of the mixer.
Smart Images
Figure CN223746877U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model provides a mixer of fire extinguishing equipment, especially a gas-liquid mixer for compressed air foam fire extinguishing equipment. BACKGROUND
[0002] The gas flow, liquid flow and foam flow in the current foam fire extinguishing equipment need to be mixed in a certain proportion, and the flow of these substances needs to be adjusted by a sensor to control a servo motor, which is relatively high in cost. Or the mixing is realized by premixing liquid, but the premixed foam liquid is prone to deterioration after long time storage, causing great waste. In addition, since the gas and liquid are mixed in the pipe network, the gas and liquid are directly conveyed by pipes, so that pressure imbalance occurs during conveying, which causes pressure imbalance of the gas and liquid in the mixer during conveying, great impact on the inside of the mixer, disturbance to the mixing work of the mixer and influence on the mixing effect of the foam liquid. SUMMARY
[0003] The utility model provides a gas-liquid mixer for compressed air foam fire extinguishing equipment, which can effectively prevent disturbance of gas-liquid mixing of the mixer and improve the mixing effect of the foam liquid.
[0004] The utility model adopts the following technical scheme: a gas-liquid mixer for compressed air foam fire extinguishing equipment, which comprises a main mixer horizontally placed and a vice mixer vertically placed, the vice mixer is installed on the side surface of the main mixer, a main water inlet channel, a mixed liquid collecting chamber, a main-vice mixing chamber, a gas-liquid collecting chamber and a gas-liquid mixing chamber are sequentially arranged in the main mixer from front to back in the axial direction, a vice liquid inlet hole and an air inlet are arranged on the side surface of the main mixer, a vice liquid inlet mixing channel is arranged in the axial direction in the vice mixer, a foam liquid inlet is arranged on the side surface of the vice mixer, a foam liquid storage bottle is connected with the foam liquid inlet in communication through a flow adjusting pump, the foam liquid inlet is connected with the vice liquid inlet mixing channel in communication through an injection channel I in the vice mixer, the vice liquid inlet mixing channel penetrates through the inside of the whole vice mixer in the axial direction from the head to the tail, the tail of the vice liquid inlet mixing channel is connected with the vice liquid inlet hole in communication, the vice liquid inlet hole is connected with the mixed liquid collecting chamber in communication through an injection channel II, the main water inlet channel is also connected with the mixed liquid collecting chamber in communication, the outlet of the mixed liquid collecting chamber is connected with the inlet of the main-vice mixing chamber in communication, an air storage tank is connected with the air inlet in communication, the air inlet is connected with the gas-liquid collecting chamber in communication through an injection channel III, the outlet of the main-vice mixing chamber is also connected with the gas-liquid collecting chamber in communication, the outlet of the gas-liquid collecting chamber is connected with the inlet of the gas-liquid mixing chamber in communication, and the outlet of the gas-liquid mixing chamber is connected with the foam liquid output channel of the main mixer in communication.
[0005] Further, the main water inlet channel, the mixed liquid collecting chamber, the main and auxiliary mixing chamber, the gas-liquid collecting chamber and the gas-liquid mixing chamber are located at the axial center of the main mixer, and the axial center lines of the main water inlet channel, the mixed liquid collecting chamber, the main and auxiliary mixing chamber, the gas-liquid collecting chamber and the gas-liquid mixing chamber are on the same straight line with the axial center line of the main mixer.
[0006] Further, the auxiliary liquid inlet mixing channel is located at the middle of the auxiliary mixer, and the axial center line of the auxiliary liquid inlet mixing channel is on the same straight line with the axial center line of the auxiliary mixer.
[0007] Further, the main water inlet channel comprises a front main water inlet, a middle tapered pipe and a tail main water outlet, the main water inlet is connected with the middle tapered pipe and the tail main water outlet in sequence, the main water inlet is connected with the main water storage tank through a pipeline, the middle tapered pipe has a larger diameter at one end and a smaller diameter at the other end, the end with the larger diameter is connected with the main water inlet, and the end with the smaller diameter is connected with the mixed liquid collecting chamber through the tail main water outlet.
[0008] Further, the auxiliary liquid inlet mixing channel comprises a front auxiliary water inlet, a middle front tapered water inlet pipe, a rear tapered mixing pipe and a tail auxiliary liquid outlet, the front auxiliary water inlet is connected with the middle front tapered water inlet pipe, the rear tapered mixing pipe and the tail auxiliary liquid outlet in sequence, the auxiliary water inlet is connected with the auxiliary water storage tank through a pipeline, the front tapered water inlet pipe and the rear tapered mixing pipe have a larger diameter at one end and a smaller diameter at the other end, the end with the larger diameter of the front tapered water inlet pipe is connected with the auxiliary water inlet, the end with the smaller diameter of the front tapered water inlet pipe is connected with the end with the smaller diameter of the rear tapered mixing pipe, and the end with the larger diameter of the rear tapered mixing pipe is connected with the auxiliary liquid inlet hole through the tail auxiliary liquid outlet.
[0009] Further, the injection channel I is arranged as an inwardly inclined annular tapered channel.
[0010] Further, the injection channel II is arranged as an annular channel, and an inwardly inclined inclined outlet is arranged at the joint of the injection channel II and the mixed liquid collecting chamber.
[0011] Further, the injection channel III is arranged as an inwardly inclined annular tapered channel.
[0012] Further, the flow regulating pump is an electric pump.
[0013] The utility model has the following beneficial effects: after the above technical scheme is used, the utility model adopts three injection channels, three injection channels are arranged respectively in the first mixing, the second mixing and the third mixing of foam liquid, so that after three times of injection, the pressure change of each injection can balance the pressure change, the impact on the system and equipment is reduced, disturbance to the mixing work of the mixer is prevented, the mixing effect of the foam liquid is effectively improved, so that the fire -fighting foam with uniform foaming can be obtained, and the structure is simple, the cost is low, and the operation is also convenient. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.
[0015] Figure 1 It is the structural schematic diagram of the utility model.
[0016] Figure 2 It is the external structural schematic diagram of the utility model. CONCRETE EMBODIMENT
[0017] The preferred embodiments of the utility model will be described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.
[0018] In Figure 1And the figure, the utility model provides a gas liquid mixer for compressed air foam fire extinguishing equipment, it includes horizontal placement main mixer 1 and vertical placement side mixer 2, side mixer 2 is installed in the side of main mixer 1, is equipped with main water inlet channel 3, mixed liquid collection chamber 4, main side mixing chamber 5, gas liquid collection chamber 6 and gas liquid mixing chamber 7 in the inside axial of main mixer 1 from front to back in turn, is equipped with side liquid inlet hole 13 and air inlet 14 in the side of main mixer 1, the inside axial of side mixer 2 is equipped with side liquid inlet mixing channel 8, is equipped with foam liquid inlet 9 in the side of side mixer 2, foam liquid storage bottle 10 is connected with foam liquid inlet 9 by flow regulating pump 11, foam liquid inlet 9 is connected with side liquid inlet mixing channel 8 by injection channel I 12 in side mixer 2, side liquid inlet mixing channel 8 is through the inside of whole side mixer 2 from head to tail axial, the tail of side liquid inlet mixing channel 8 is connected with side liquid inlet hole 13, side liquid inlet hole 13 is connected with mixed liquid collection chamber 4 by injection channel II 15, main water inlet channel 3 is also connected with mixed liquid collection chamber 4, the outlet of mixed liquid collection chamber 4 is connected with the import of main side mixing chamber 5, air storage tank 16 is connected with air inlet 14, air inlet 14 is connected with gas liquid collection chamber 6 by injection channel III 17, the outlet of main side mixing chamber 5 is also connected with gas liquid collection chamber 6, the outlet of gas liquid collection chamber 6 is connected with the import of gas liquid mixing chamber 7, the outlet of gas liquid mixing chamber 7 is connected with foam liquid output channel 18 of main mixer 1, the axial center line of main water inlet channel 3, the axial center line of mixed liquid collection chamber 4, the axial center line of main side mixing chamber 5, the axial center line of gas liquid collection chamber 6 and the axial center line of gas liquid mixing chamber 7 are on the same straight line with the axial center line of main mixer 1, the axial center line of side liquid inlet mixing channel 8 is on the same straight line with the axial center line of side mixer 2, the main water inlet channel 3 of the embodiment includes main water inlet 19 in the front, conical pipe 20 in the middle and main outlet 21 in the tail, main water inlet 19 is connected with conical pipe 20 in the middle and main outlet 21 in the tail in turn, the taper of conical pipe 20 in the middle is 10 °, main water inlet 19 is connected with main water storage tank 22 by pipeline, one end of conical pipe 20 in the middle is larger than the other end of pipe diameter, one end of pipe diameter is connected with main water inlet 19, the other end of small pipe diameter is connected with mixed liquid collection chamber 4 by main outlet 21 in the tail, the side liquid inlet mixing channel 8 of the embodiment includes side water inlet 23 in the front, front conical water inlet pipe 24 in the middle, rear conical mixing pipe 25 and side outlet 26 in the tail, the taper of front conical water inlet pipe 24 is 10 °, the taper of rear conical mixing pipe 25 is 12 °,The front auxiliary water inlet 23 is communicated with the front conical water inlet pipe 24, the rear conical mixing pipe 25 and the tail auxiliary liquid outlet 26 in sequence, the auxiliary water inlet 23 is communicated with the auxiliary water storage tank 27 through a pipeline, the front conical water inlet pipe 24 and the rear conical mixing pipe 25 are both one end of a pipe diameter larger than the other end of a pipe diameter, the large one end of the pipe diameter of the front conical water inlet pipe 24 is communicated with the auxiliary water inlet 23, the small one end of the pipe diameter of the front conical water inlet pipe 24 is communicated with the small one end of the pipe diameter of the rear conical mixing pipe 25, the large one end of the pipe diameter of the rear conical mixing pipe 25 is communicated with the auxiliary liquid inlet hole 13 through the tail auxiliary liquid outlet 26, the injection channel I 112 used in the embodiment is set as an inwardly inclined annular conical channel, the taper angle of the annular conical channel is 40°, the injection channel II 115 used in the embodiment is set as an annular channel, the combination of the injection channel II 115 and the mixed liquid collecting chamber 4 is set as an inwardly inclined inclined outlet 28, the inclination angle of the inclined outlet 28 is 35°, the injection channel III 117 used in the embodiment is set as an inwardly inclined annular conical channel, the taper angle of the annular conical channel is 30°, and the flow regulating pump 11 used in the embodiment is an electric pump.
[0019] The specific use method of the utility model is: the utility model water pump will water pump out through the main water inlet 19 into the main water inlet channel 3, then through the main water inlet channel 3 into the mixed liquid collecting chamber 4, at the same time, the foam liquid is pumped into the auxiliary mixer from the foam liquid storage bottle 10 after the electric flow regulating pump 11, the flow regulating pump 11 can realize the flow regulation of the foam liquid, under the action of the injection channel I 112, negative pressure is generated to suck the foam liquid into the auxiliary liquid inlet mixing channel 8, the water entering from the auxiliary water inlet 23 and the front conical water inlet pipe 24 in the middle is mixed in the rear conical mixing pipe 25, then enters the main mixer 1 through the auxiliary liquid inlet hole 13, enters the mixed liquid collecting chamber 4 after the injection of the injection channel II 115, and enters the main auxiliary mixing chamber 5 after the water flow entering through the main water inlet channel 3 is collected, then is mixed and stirred to form the foam mixed liquid, at the same time, the air also enters the main mixer 1 through the air inlet, the air is adsorbed into the gas-liquid collecting chamber 6 under the injection of the injection channel III 117, then the air and the foam mixed liquid are stirred and foamed in the gas-liquid mixing chamber 7 to form the foam for fire extinguishing, the foam liquid output channel 18 of the main mixer 1 is used to deliver the foam to the foam gun, and the foam is sprayed out of the foam gun, after three times of injection, the pressure change during ejection can be effectively balanced due to the injection, the impact of the gas or liquid on the equipment is reduced, and the anti-interference ability is very high.
[0020] Not limited to this, any change or replacement not thought of through creative labor should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope defined in the claims.
Claims
1. A gas-liquid mixer for use in compressed air foam extinguishing equipment, characterised in that It includes horizontally placed main mixer (1) and vertically placed auxiliary mixer (2), auxiliary mixer (2) is installed on the side of main mixer (1), and the inside of main mixer (1) is sequentially provided with main water inlet channel (3), mixed liquid collection chamber (4), main auxiliary mixing chamber (5), gas-liquid collection chamber (6) and gas-liquid mixing chamber (7) from front to back in the axial direction, the side of main mixer (1) is provided with auxiliary liquid inlet hole (13) and air inlet (14), the inside of auxiliary mixer (2) is provided with auxiliary liquid inlet mixing channel (8) in the axial direction, the side of auxiliary mixer (2) is provided with foam liquid inlet (9), foam liquid storage bottle (10) is connected with foam liquid inlet (9) in communication through flow regulating pump (11), foam liquid inlet (9) is connected with auxiliary liquid inlet mixing channel (8) in communication through injection channel I (12) in the inside of auxiliary mixer (2), auxiliary liquid inlet mixing channel (8) penetrates through the inside of entire auxiliary mixer (2) in the axial direction from head to tail, the tail of auxiliary liquid inlet mixing channel (8) is connected with auxiliary liquid inlet hole (13) in communication, auxiliary liquid inlet hole (13) is connected with mixed liquid collection chamber (4) in communication through injection channel II (15), main water inlet channel (3) is also connected with mixed liquid collection chamber (4) in communication, the outlet of mixed liquid collection chamber (4) is connected with the inlet of main auxiliary mixing chamber (5) in communication, air storage tank (16) is connected with air inlet (14) in communication, air inlet (14) is connected with gas-liquid collection chamber (6) in communication through injection channel III (17), the outlet of main auxiliary mixing chamber (5) is also connected with gas-liquid collection chamber (6) in communication, the outlet of gas-liquid collection chamber (6) is connected with the inlet of gas-liquid mixing chamber (7) in communication, the outlet of gas-liquid mixing chamber (7) is connected with foam liquid output channel (18) of main mixer (1) in communication.
2. The air-liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1, characterized in that The axial center line of main water inlet channel (3), the axial center line of mixed liquid collection chamber (4), the axial center line of main auxiliary mixing chamber (5), the axial center line of gas-liquid collection chamber (6) and the axial center line of gas-liquid mixing chamber (7) are on the same straight line with the axial center line of main mixer (1).
3. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1, characterized in that The auxiliary liquid inlet mixing channel (8) is located at the middle position of auxiliary mixer (2), and the axial center line of auxiliary liquid inlet mixing channel (8) is on the same straight line with the axial center line of auxiliary mixer (2).
4. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1 or 2, characterized in that Main water inlet channel (3) includes front main water inlet (19), middle conical pipe (20) and tail main water outlet (21), main water inlet (19) is connected with middle conical pipe (20) and tail main water outlet (21) in communication in turn, main water inlet (19) is connected with main water storage tank (22) in communication through pipeline, one end of middle conical pipe (20) has larger pipe diameter than the other end, the end with larger pipe diameter is connected with main water inlet (19), and the other end with smaller pipe diameter is connected with mixed liquid collection chamber (4) in communication through tail main water outlet (21).
5. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1 or 3, characterized in that The auxiliary liquid inlet mixing channel (8) comprises a front auxiliary water inlet (23), a middle front conical water inlet pipe (24), a rear conical mixing pipe (25) and a tail auxiliary liquid outlet (26), the front auxiliary water inlet (23) is communicated with the middle front conical water inlet pipe (24), the rear conical mixing pipe (25) and the tail auxiliary liquid outlet (26) in sequence, the auxiliary water inlet (23) is communicated with the auxiliary water storage tank (27) through a pipeline, the front conical water inlet pipe (24) and the rear conical mixing pipe (25) are both one end of which has a larger pipe diameter than the other end, the end of the front conical water inlet pipe (24) with a larger pipe diameter is communicated with the auxiliary water inlet (23), the end of the front conical water inlet pipe (24) with a smaller pipe diameter is communicated with the end of the rear conical mixing pipe (25) with a smaller pipe diameter, and the end of the rear conical mixing pipe (25) with a larger pipe diameter is communicated with the auxiliary liquid inlet hole (13) through the tail auxiliary liquid outlet (26).
6. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1, characterized in that The ejector channel I (12) is an inwardly inclined annular conical channel.
7. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1, characterized in that The ejector channel II (15) is an annular channel, and an inwardly inclined inclined outlet (28) is arranged at the joint of the ejector channel II (15) and the mixed liquid collecting chamber (4).
8. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1, characterized in that The ejector channel III (17) is an inwardly inclined annular conical channel.
9. The air and liquid mixer for use in compressed air foam extinguishing apparatus according to claim 1, characterized in that The flow regulating pump (11) is an electric pump.