CN217311698U

CN217311698U - Foam proportioning mixer

Info

Publication number: CN217311698U
Application number: CN202221025788.8U
Authority: CN
Inventors: 姚庆高
Original assignee: Ningbo Yonghang Fire Fighting Equipment Co ltd
Current assignee: Ningbo Yonghang Fire Fighting Equipment Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-08-30
Anticipated expiration: 2032-04-28

Abstract

The foam proportioner comprises a mixer body, wherein a liquid inlet branch pipe is arranged above the mixer body, a mixing cavity is arranged in the mixer body, and the mixing cavity is positioned below the liquid inlet branch pipe and communicated with the liquid inlet branch pipe; the liquid inlet branch pipe is connected with a three-way joint, the three-way joint comprises a liquid inlet branch pipe joint positioned below, a liquid inlet joint positioned on the side part and a flow regulating rod joint positioned above, a flow regulating rod is rotationally connected in the flow regulating rod joint, and the upper end of the flow regulating rod is fixedly connected with a rotating handle; the flow regulating rod is annularly provided with a plurality of liquid inlet holes with different sizes, and a liquid outlet hole is arranged below the flow regulating rod; the liquid inlet hole is communicated with the liquid outlet hole; a nozzle is arranged in the mixer body, a plurality of liquid inlets are annularly arranged on the nozzle, and the liquid inlets are communicated with the mixing cavity; the utility model discloses a foam proportioner can be by accurate control air foam mixing ratio, and convenient to use can improve mixed effect.

Description

Foam proportioning mixer

Technical Field

The utility model relates to a blender technical field for the fire extinguisher, in particular to foam proportioner.

Background

The foam proportioner is a nerve center of the foam fire extinguishing system, and the working performance of the foam proportioner is directly related to the success or failure of the foam fire extinguishing system in fighting fire. The existing foam proportioning mixer generally comprises a circulating pipe and a foam concentrate pipeline, wherein a nozzle is arranged in one end of the circulating pipe, the foam concentrate pipeline is vertically arranged with the circulating pipe, a liquid outlet of the foam concentrate pipeline is communicated and connected with the upper side wall of the circulating pipe, and a flow regulating rod is arranged on the foam concentrate pipeline; when the fire fighting water works, the fire fighting water passes through the nozzle at one end of the circulating pipe and then is mixed and proportioned with foam concentrate flowing out of the foam concentrate pipeline, and at the moment, the fire fighting water and the foam concentrate are uniformly mixed under the action of turbulence in the circulating pipe and mixed liquid flows out of the other end of the circulating pipe. In the conventional foam proportioner, although the outflow amount of foam liquid flowing out of a foam liquid pipeline is adjustable, the mixing ratio cannot be controlled; and the liquid outlet of the foam liquid pipeline leads to the mixing cavity, and a nozzle is arranged on one side of the mixing cavity, so that the foam liquid flowing out of the liquid outlet can only be mixed with fire fighting water from the upper part of the mixing cavity during mixing, and the mixing effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the problem to prior art exists provides a mixing ratio is controllable, mixes effectual foam proportioner.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the foam proportioner comprises a mixer body, wherein a liquid inlet branch pipe is arranged above the mixer body, a mixing cavity is arranged in the mixer body, and the mixing cavity is positioned below the liquid inlet branch pipe and communicated with the liquid inlet branch pipe; the liquid inlet branch pipe is connected with a three-way joint, the three-way joint comprises a liquid inlet branch pipe joint positioned below, a liquid inlet joint positioned on the side part and a flow regulating rod joint positioned above, a flow regulating rod is rotatably connected in the flow regulating rod joint, the upper end of the flow regulating rod is fixedly connected with a rotating handle, and the rotating handle is positioned outside the flow regulating rod joint; the flow regulating rod extends to the position below the liquid inlet joint, a plurality of liquid inlet holes with different sizes are annularly arranged on the flow regulating rod, and the liquid inlet holes are used for being communicated with the liquid inlet joint; a liquid outlet hole is formed below the flow regulating rod and is used for being communicated with a liquid inlet branch pipe joint; the liquid inlet hole is communicated with the liquid outlet hole;

the mixer body is provided with a first nozzle limiting part and a second nozzle limiting part on the left side and the right side of the mixing cavity respectively, nozzles penetrate through the first nozzle limiting part, the mixing cavity and the second nozzle limiting part, and the outer walls of two ends of each nozzle are matched with the first nozzle limiting part and the second nozzle limiting part respectively; the nozzle is annularly provided with a plurality of liquid inlets which are communicated with the mixing cavity.

Preferably, the flow rate adjusting rod comprises a rod part and a first connecting part positioned at the upper end of the rod part, and the first connecting part is connected with the rotating handle; the outer diameter of the first connecting part is smaller than that of the rod part; the upper end of the flow regulating rod joint is connected with a locking spiral ring, and the first connecting part is positioned on the inner side of the locking spiral ring and is provided with an external thread matched with the locking spiral ring; the rod part is limited below the locking spiral ring by the locking spiral ring.

Preferably, the flow regulating rod joint is connected with the locking coil through a fastener.

Preferably, the upper end of the flow regulating rod joint is provided with a locking spiral limiting ring, and the locking spiral is positioned in the locking spiral limiting ring.

Preferably, the flow regulating rod is provided with a sealing ring matched with the joint of the flow regulating rod.

Preferably, the flow regulating rod is annularly provided with a limiting groove, and the sealing ring is arranged in the limiting groove.

Preferably, the number of the liquid inlet holes is two, and the liquid inlet holes are distributed on two sides of the flow regulating rod relatively.

Preferably, the mixing ratio of the foam proportioner is adjustable at 3% or 6%.

Preferably, the nozzle is provided with a first conical cavity and a second conical cavity which are communicated with each other, and the first conical cavity and the second conical cavity respectively shrink from two ends of the nozzle to the middle of the nozzle; the outer wall of first toper cavity is located to the inlet hoop, the tip and the spacing portion of first nozzle of the outer wall of first toper cavity cooperate, the outer wall and the spacing portion of second nozzle of second toper cavity cooperate, be equipped with the sealing washer between the outer wall of second toper cavity and the spacing portion of second nozzle.

Preferably, a diffusion pipe is arranged on the left side of the mixer body, and a cavity of the diffusion pipe is conical; the diffusion tube is connected with the first tube bud interface; a water inlet pipe is arranged on the right side of the mixer body and is connected with the second pipe bud interface; the first nozzle limiting part is positioned in the diffusion pipe, and the second nozzle limiting part is positioned in the water inlet pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the air foam mixing proportion can be accurately controlled by arranging the flow regulating rod, and the use is convenient; by arranging the liquid inlets on the nozzle in the circumferential direction and arranging the mixing chamber on the circumferential side of the liquid inlets, the foam concentrate can flow to the circumferential side of the nozzle along with the mixing chamber, the contact area of water and the foam concentrate is increased, and the mixing effect is improved.

Drawings

FIG. 1 is a cross-sectional view of the foam proportioner of the invention.

Reference numerals: 1. a mixer body; 11. a mixing chamber; 12. a liquid inlet branch pipe; 13. a first tube bud interface; 14. a second pipe bud interface; 21. a liquid inlet branch pipe joint; 22. a liquid inlet joint; 23. a flow regulating rod joint; 31. a first conical cavity; 32. a second conical cavity; 311. a liquid inlet; 4. a flow regulating rod; 41. a liquid inlet hole; 42. a liquid outlet hole; 5. locking the spiral coil; 6. rotating the handle; 7. a fastener; 91. a first seal ring; 92. and a second seal ring.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, the foam proportioner comprises a mixer body 1, wherein a liquid inlet branch pipe 12 is arranged above the mixer body 1, a mixing cavity 11 is arranged in the mixer body 1, and the mixing cavity 11 is positioned below the liquid inlet branch pipe 12 and communicated with the liquid inlet branch pipe 12; the liquid inlet branch pipe 12 is connected with a three-way joint, and the three-way joint comprises a liquid inlet branch pipe joint 21 positioned below, a liquid inlet joint 22 positioned on the side part and a flow regulating rod joint 23 positioned above; the liquid inlet joint 22 is used for connecting a foam liquid pipe;

the flow regulating rod joint 23 is rotatably connected with a flow regulating rod 4, the flow regulating rod 4 comprises a rod part and a first connecting part positioned at the upper end of the rod part, the rod part extends to a position below the liquid inlet joint 22, the rod part is annularly provided with a plurality of liquid inlet holes 41 with different sizes, and the liquid inlet holes 41 are used for being communicated with the liquid inlet joint 22; in this embodiment, the number of the liquid inlet holes 41 is two, and the liquid inlet holes are distributed on two sides of the rod portion relatively; a liquid outlet hole 42 is formed below the rod part, and the liquid outlet hole 42 is used for being communicated with the liquid inlet branch pipe joint 21; the liquid inlet hole 41 is communicated with the liquid outlet hole 42; the rod part is annularly provided with a limiting groove, a first sealing ring 91 is arranged in the limiting groove, and the first sealing ring 91 is matched with the flow regulating rod joint 23;

the upper end of the flow regulating rod joint 23 is provided with a locking spiral limiting ring, and the locking spiral limiting ring is connected with a locking spiral 5 through a fastener; the outer diameter of the first connecting part is smaller than that of the rod part, and the first connecting part is positioned on the inner side of the locking coil 5 and is provided with an external thread matched with the locking coil 5; the rod part of the locking spiral ring 5 is limited below the locking spiral ring 5; the first connecting part is connected with a rotating handle 6 through a fastener 7, and the rotating handle 6 is positioned outside the flow regulating rod joint 23;

the mixer body 1 is provided with a first nozzle limiting part and a second nozzle limiting part on the left side and the right side of a mixing cavity 11 respectively, nozzles penetrate through the first nozzle limiting part, the mixing cavity 11 and the second nozzle limiting part, the nozzles are provided with a first conical cavity 31 and a second conical cavity 32 which are communicated with each other, and the first conical cavity 31 and the second conical cavity 32 shrink from the two ends of the nozzles to the middle of the nozzles respectively; the nozzle is annularly provided with a plurality of liquid inlets 311, the liquid inlets 311 are annularly arranged on the outer wall of the first conical cavity 31, and the liquid inlets 311 are communicated with the mixing cavity 11; the end part of the outer wall of the first conical cavity 31 is matched with the first nozzle limiting part, the outer wall of the second conical cavity 32 is matched with the second nozzle limiting part, and a second sealing ring 92 is arranged between the outer wall of the second conical cavity 32 and the second nozzle limiting part.

A diffusion pipe is arranged on the left side of the mixer body 1, and a cavity of the diffusion pipe is conical; the diffusion tube is connected with the first tube bud interface 13; a water inlet pipe is arranged on the right side of the mixer body 1 and is connected with a second pipe bud interface 14; the first nozzle limiting part is positioned in the diffusion pipe, and the second nozzle limiting part is positioned in the water inlet pipe.

When the foam liquid mixing device is used, foam liquid enters from the liquid inlet joint 22, and the size of a liquid inlet hole 41 communicated with a liquid outlet hole 42 in the flow adjusting rod 4 can be controlled by adjusting the rotating handle 6, so that the entering speed of the foam liquid is changed, and the mixing proportion of air foam is changed; in the embodiment, the mixing proportion of the air foam is 3 percent and 6 percent adjustable; the foam liquid flows out from the liquid outlet hole 42 and enters the mixing cavity 11 through the liquid inlet branch pipe 12; the pressure water enters the water inlet pipe from the second pipe bud interface 14 and enters the first conical cavity through the second conical cavity of the nozzle, and the flow rate of the pressure water is increased because the opening of the second conical cavity gradually shrinks towards the first conical cavity; at the liquid inlet 311 of the first conical cavity, the foam liquid in the mixing cavity 11 is taken away due to the viscous action of the jet flow and the foam liquid; due to the transverse turbulent diffusion effect of the jet flow protons, a negative pressure area is formed in the mixing cavity 11, a pressure difference is formed between the liquid inlet branch pipe 12 and the mixing cavity 11, and under the action of the pressure difference, foam liquid in the mixing cavity 11 enters the diffusion pipe along with high-speed jet flow generated by the nozzle and is sprayed out from the first pipe bud interface 13.

The utility model has the advantages that the air foam mixing proportion can be accurately controlled by arranging the flow adjusting rod 4, and the use is convenient; by arranging a plurality of liquid inlets 311 on the nozzle in the circumferential direction and arranging the mixing chamber 11 on the periphery of the liquid inlets 311, the foam concentrate can flow to the periphery of the nozzle along with the mixing chamber 11, so that the contact area between water and the foam concentrate is increased, and the mixing effect is improved.

Finally, it should be noted that: the above embodiments are merely illustrative of the technical solutions of the present invention, and not limitative thereof; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The foam proportioner comprises a mixer body, wherein a liquid inlet branch pipe is arranged above the mixer body, a mixing cavity is arranged in the mixer body, and the mixing cavity is positioned below the liquid inlet branch pipe and communicated with the liquid inlet branch pipe; the flow regulating device is characterized in that the liquid inlet branch pipe is connected with a three-way joint, the three-way joint comprises a liquid inlet branch pipe joint positioned below, a liquid inlet joint positioned on the side part and a flow regulating rod joint positioned above, a flow regulating rod is rotatably connected in the flow regulating rod joint, the upper end of the flow regulating rod is fixedly connected with a rotating handle, and the rotating handle is positioned outside the flow regulating rod joint; the flow regulating rod extends to the position below the liquid inlet joint, a plurality of liquid inlet holes with different sizes are annularly arranged on the flow regulating rod, and the liquid inlet holes are used for being communicated with the liquid inlet joint; a liquid outlet hole is formed below the flow regulating rod and is used for being communicated with a liquid inlet branch pipe joint; the liquid inlet hole is communicated with the liquid outlet hole;

the mixer body is provided with a first nozzle limiting part and a second nozzle limiting part on the left side and the right side of the mixing cavity respectively, a nozzle is arranged among the first nozzle limiting part, the mixing cavity and the second nozzle limiting part in a penetrating mode, and the outer walls of two ends of the nozzle are matched with the first nozzle limiting part and the second nozzle limiting part respectively; the nozzle is annularly provided with a plurality of liquid inlets which are communicated with the mixing cavity.

2. The foam proportioner of claim 1 wherein the flow adjustment stem comprises a stem portion and a first connection at an upper end of the stem portion, the first connection being connected to a rotating handle; the outer diameter of the first connecting part is smaller than that of the rod part; the upper end of the flow regulating rod joint is connected with a locking spiral ring, and the first connecting part is positioned on the inner side of the locking spiral ring and is provided with an external thread matched with the locking spiral ring; the rod part is limited below the locking spiral ring by the locking spiral ring.

3. The foam proportioner of claim 2 wherein the flow adjustment stem joint is attached to the locking coil by a fastener.

4. The foam proportioner of claim 2 wherein the upper end of the flow regulating rod joint is provided with a locking coil retainer ring, the locking coil being located within the locking coil retainer ring.

5. Foam proportioner according to claim 1, characterized in that the flow regulating rod is provided with a sealing ring cooperating with the flow regulating rod joint.

6. The foam proportioner of claim 5 wherein the flow regulating stem is circumferentially provided with a limiting groove and the sealing ring is disposed in the limiting groove.

7. The foam proportioner of claim 1 wherein the number of the liquid inlet holes is two and the liquid inlet holes are distributed on two sides of the flow regulating rod oppositely.

8. Foam proportioner in accordance with claim 1, characterized in that the mixing ratio of the foam proportioner is 3% or 6% adjustable.

9. The foam proportioner of claim 1, wherein the nozzle is provided with a first conical cavity and a second conical cavity which are communicated with each other, and the first conical cavity and the second conical cavity respectively shrink from two ends of the nozzle to the middle of the nozzle; the outer wall of first toper cavity is located to the inlet hoop, the tip and the spacing portion of first nozzle of the outer wall of first toper cavity cooperate, the outer wall and the spacing portion of second nozzle of second toper cavity cooperate, be equipped with the sealing washer between the outer wall of second toper cavity and the spacing portion of second nozzle.

10. The foam proportioner of claim 1 wherein a diffuser tube is provided on the left side of the mixer body, the cavity of the diffuser tube being tapered; the diffusion tube is connected with the first tube bud interface; a water inlet pipe is arranged on the right side of the mixer body and is connected with the second pipe bud interface; the first nozzle limiting part is positioned in the diffusion pipe, and the second nozzle limiting part is positioned in the water inlet pipe.