CN217961070U - Foam gun with adjustable jet state - Google Patents

Abstract

The utility model provides a efflux state adjustable foam big gun, a serial communication port, include: the gun head part and the gun body part; wherein the gun head portion comprises a gun barrel, a gun barrel cover, a support arm and a baffle; the gun barrel cover is arranged on the periphery of the gun barrel, two sides of the gun barrel cover comprise rotating shafts, one end of the supporting arm is connected with the rotating shafts, and the other end of the supporting arm is fixedly connected with the baffle; the gun head part also comprises at least one mechanical connecting rod and at least one driving device, and the telescopic end of the mechanical connecting rod can be driven by the driving device to stretch and contract and is connected with the baffle or the supporting arm. The utility model discloses a efflux state adjustable foam big gun can change the multiple of launching the big gun, fluidic state through remote operation, has increased the flexibility of foam big gun, simple structure low cost moreover. Therefore, it has high industrial utilization value.

Description

Foam gun with adjustable jet state

Technical Field

The utility model relates to a fire-fighting equipment especially relates to a can adjust injection angle's foam big gun.

Background

The principle of the foam gun for fire fighting is that fire fighting water with certain pressure is mixed with foam liquid through a foam proportion mixing device to form foam mixed liquid with certain proportion, and the foam mixed liquid is sprayed out through a nozzle to form air foam so as to achieve the fire fighting effect. The foam mixed liquid is sucked into the air, and the foam guns with different times are suitable for different types of fire. Factors influencing the foaming times include the contact time and the contact area of the mixed liquid and air, so that different foaming times can be realized by changing the structure of the gun in addition to adjusting the components of the foaming agent.

The existing foam cannons can be divided into high-power cannons, medium-power cannons and low-power cannons according to different foaming times. However, in any cannon, the foaming multiple is fixed, the jet state of the jetted cannon is also fixed, the actual fire extinguishing requirement is variable, and the cannon with the fixed foaming multiple and the fixed jet state lacks flexibility.

In addition, in order to realize the elevation angle adjustment of the gun head, in the existing foam gun, a rotating mechanism which takes a gear and an electric push rod as cores is adopted between the gun head and the gun body. However, this type of connection has the disadvantage that fine adjustment cannot be achieved and the gun head tends to loosen as the ram mechanism wears and ages.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcoming of the prior art, the utility model provides a efflux state adjustable foam big gun, a serial communication port, include: the gun head part and the gun body part; wherein the gun head portion comprises a gun barrel, a gun barrel cover, a support arm and a baffle; the gun barrel cover is arranged on the periphery of the gun barrel, two sides of the gun barrel cover comprise rotating shafts, one end of the supporting arm is connected with the rotating shafts, and the other end of the supporting arm is fixedly connected with the baffle; the gun head part also comprises at least one mechanical connecting rod and at least one driving device, and the telescopic end of the mechanical connecting rod can be driven by the driving device to stretch and contract and is connected with the baffle or the supporting arm.

Preferably, in the foam cannon with the adjustable jet flow state, the supporting arm is Y-shaped, the converging end of the Y shape is connected with the rotating shaft, and the diverging end of the Y shape is fixedly connected with the baffle.

Preferably, in the foam gun with the adjustable jet flow state, the sidewall of the gun barrel cover is provided with a reinforcing rib, and the rotating shaft is arranged on the reinforcing rib.

Preferably, in the foam monitor with the adjustable jet state, the cross section of the baffle is set to be arc-shaped.

Preferably, in the foam gun with the adjustable jet state, the curvature of the arc-shaped upper part of the cross section of the baffle plate is larger than that of the arc-shaped lower part.

Preferably, in the foam cannon with adjustable jet state, the driving device is a hydraulic pump.

Preferably, in the foam gun with adjustable jet state, the mechanical connecting rod comprises threads on the outer part; the driving device comprises a threaded sleeve and a stepping motor.

Preferably, in the foam gun with the adjustable jet state, the mechanical link and the driving device are arranged at the upper part of the gun barrel cover.

Preferably, in the foam gun with adjustable jet state, two sides of the gun barrel cover respectively comprise the mechanical connecting rod and the driving device.

Preferably, in the foam gun with adjustable jet state, the driving device further comprises a remote control module.

Preferably, in the foam gun with the adjustable jet state, one end of the gun barrel cover close to the gun barrel opening further comprises a mesh eye cover.

Preferably, in the foam gun with adjustable jet state, the connecting mechanism between the gun head and the gun body comprises: the transmission rod, worm and worm wheel, the transmission rod with the worm is connected and can drives the worm is rotatory, the worm wheel with big gun head fixed connection, the worm surface sets up the screw thread, the worm wheel inner circle sets up the sawtooth, the sawtooth interval with the screw thread matches, just the rotation axis of worm with the rotation axis non-collineation of worm wheel is perpendicular.

Preferably, in the foam gun with the adjustable jet state, the worm is further provided with a manual rotating disc.

As mentioned above, the utility model discloses a efflux state adjustable foam big gun can change the multiple of launching the big gun, fluidic state through remote operation, has increased the flexibility of foam big gun, simple structure low cost moreover. Therefore, it has high industrial utilization value.

Drawings

FIG. 1 is a perspective view of one embodiment of the present invention;

FIG. 2 is a side view of the embodiment of FIG. 1;

FIG. 3 is a side view of the embodiment of FIG. 1 with the flapper in a lowered position;

fig. 4 is a side view of a second embodiment of the invention;

fig. 5 is a cross-sectional view of the attachment mechanism of the embodiment of fig. 4.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Please refer to the attached drawings. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Referring first to fig. 1, fig. 1 is a perspective view of an embodiment of the present invention. The device comprises a gun head 1 and a gun body 2. Wherein the gun head 1 comprises a gun barrel 11, a gun barrel cover 12 and a baffle 13. The left and right side walls of the barrel cover 12 respectively include a rotation shaft 121, the two rotation shafts 121 are respectively connected to the support arms 14, and the other ends of the two support arms 14 are fixedly connected to the shutter 13, so that the shutter 13 can be moved between a raised position and a lowered position by rotating the support arms 14, as shown in fig. 2 and 3.

Preferably, as in this example, the support arm 14 is configured as a "Y" shape, the converging end 141 of the "Y" shape is connected to the rotating shaft 121, and the diverging end 142 of the "Y" shape is fixedly connected to the baffle 13, so that the edge of the baffle 13 and the two diverging ends of the support arm 14 form a triangle, which is more stable. The shape and number of the supporting arms 14 are not limited to this example, and may be 3, for example, or may be replaced with fan-shaped supporting plates.

Preferably, reinforcing ribs 15 are provided on the side walls of the barrel cover 12, and the rotary shaft 12 is provided on the reinforcing ribs 15, thereby increasing the stability and strength of the rotary shaft 12.

Preferably, the blind 13 may be provided with an arc-shaped cross-section so that the face of the blind 13 facing the barrel 11 has an arc when in the lowered position. The advantage of this kind of setting is that delay foam velocity of flow avoids high-speed foam to strike liquid level and reignite high temperature oil fire.

The reference numeral 16 indicates a mechanical link, one end of which is connected to the supporting arm 14 or the baffle 13, and the extension and contraction of the mechanical link 16 can drive the supporting arm 14 or the baffle 13 to move, so that the baffle 13 can be switched between the raised position and the lowered position. In this embodiment, the power of the mechanical linkage 16 is derived from a hydraulic pump 17, and the hydraulic pump 17 can be connected to a remote control device for the purpose of remotely controlling the movement of the flap 13. The surface of the mechanical link 16 may also be provided with threads, so that the extension and retraction of the link 16 can be realized by the rotation of the threaded sleeve driven by the stepping motor, which is also known and therefore not described in detail.

The change of the baffle 13 between the rising position and the falling position can adjust the spraying angle of the foam mixed liquid on one hand, and on the other hand, the intervention of the baffle 13 can change the contact time and the contact area of the foam mixed liquid and the air, thereby adjusting the foaming times. In addition, in order to increase the expansion ratio, a mesh cover (not shown) may be provided at an end of the barrel cover 12 near the barrel opening so that the foam mixture is ejected from the barrel 11, passes through the mesh, is sufficiently mixed with air, and is then ejected toward the target.

Fig. 4 shows a second embodiment of the present invention, in which one of the differences between the part of the monitor head 1 and the first embodiment is the shape of the baffle 13, and the arc shape of the cross section is set to have a curvature decreasing from top to bottom. Experiments have shown that with this design, the effect in terms of preventing foam splashing is better than with the uniform arc in the examples.

In the second embodiment, the connecting mechanism between the gun head 1 and the gun body 2 is also improved, and the specific structure is shown in fig. 5. The connection mechanism includes a drive rod 31, a worm 33 and a worm wheel 34. The transmission rod 31 is connected with the worm 33 and can drive the worm 33 to rotate. The worm wheel 34 is fixedly connected with the gun head 1. The surface of the worm 33 is provided with threads, the inner ring of the worm wheel 34 is provided with sawteeth, the distance of the sawteeth is matched with the threads, and the rotating shaft of the worm 33 is vertical to the rotating shaft of the worm wheel 34 in a non-collinear way. So that when the worm 33 is driven to rotate by the transmission rod 31, the worm wheel 34 can be driven to rotate under the matching of the thread and the saw teeth, and the elevation angle of the gun head 1 is changed. The power of the transmission rod 31 can be from the stepping motor, or other motors can be separately arranged for supplying power.

Preferably, a manual dial 32 is also provided on the worm 33, so that the elevation angle of the gun head 1 can be adjusted by manually rotating the dial 32.

More preferably, the motor for providing power for the transmission rod 31 can also be connected with a remote control circuit, so that the rotating speed and the rotating direction of the transmission rod 31 can be remotely controlled, and the purpose of remotely controlling the elevation angle of the gun head 1 is achieved. The remote control circuit of the actuator rod 31 is well known in the art and will not be described in detail herein.

To sum up, the utility model discloses for current foam big gun, can change the multiple of launching the big gun, fluidic state through remote operation, increased the flexibility of foam big gun, simple structure low cost moreover. Therefore, it has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention, and for example, the connecting rod may be disposed above the barrel housing 12 and connected to the upper end of the baffle. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (13)

1. A foam gun with adjustable jet state is characterized by comprising:

the gun head part and the gun body part; wherein the gun head portion comprises a gun barrel, a gun barrel cover, a support arm and a baffle;

the gun barrel cover is arranged on the periphery of the gun barrel, two sides of the gun barrel cover comprise rotating shafts, one end of the supporting arm is connected with the rotating shafts, and the other end of the supporting arm is fixedly connected with the baffle;

the gun head part also comprises at least one mechanical connecting rod and at least one driving device, and the telescopic end of the mechanical connecting rod can be driven by the driving device to stretch and contract and is connected with the baffle or the supporting arm.

2. The foam cannon of claim 1, wherein the support arm is "Y" -shaped, the converging end of the "Y" shape is connected with the rotating shaft, and the diverging end of the "Y" shape is fixedly connected with the baffle.

3. The foam cannon of claim 1, wherein the sidewall of the cannon barrel cover is provided with a stiffener, and the rotating shaft is provided on the stiffener.

4. The foam cannon of claim 1, wherein the cross-section of the baffle is configured as an arc.

5. The foam cannon of claim 4, wherein the curvature of the upper portion of the arc of the cross-section of the baffle is greater than the curvature of the lower portion.

6. The foam cannon with adjustable fluidic state of claim 1, wherein the drive device is a hydraulic pump.

7. The adjustable fluidic state foam cannon of claim 1, wherein the exterior of the mechanical linkage comprises threads; the driving device comprises a threaded sleeve and a stepping motor.

8. The adjustable fluidic state foam cannon of claim 1, wherein the mechanical linkage and drive device are disposed at an upper portion of the cannon barrel cover.

9. The adjustable jet state foam cannon of claim 1, wherein both sides of the cannon shield each include one of the mechanical linkages and the drive mechanism.

10. The fluidic state adjustable foam cannon of claim 7, wherein the actuation device further comprises a remote control module.

11. The foam monitor with adjustable fluidic state of claim 1, wherein said barrel cover further comprises a mesh eye cover at an end near said nozzle opening.

12. The foam cannon with adjustable jet state of claim 1, wherein the connection mechanism between the cannon head and the cannon body comprises: the transmission rod, worm and worm wheel, the transmission rod with the worm is connected and can drives the worm is rotatory, the worm wheel with big gun head fixed connection, the worm surface sets up the screw thread, the worm wheel inner circle sets up the sawtooth, the sawtooth interval with the screw thread matches, just the rotation axis of worm with the rotation axis non-collineation of worm wheel is perpendicular.

13. The fluidic state adjustable foam cannon of claim 12, wherein the worm is further provided with a manual dial.

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