CN112190861B - Water flow switching device of fire monitor and combined fire monitor - Google Patents

Abstract

The application relates to a water flow switching device of a fire monitor and a combined fire monitor, which comprises a water tank with a hollow interior, wherein the water tank is respectively provided with a water inlet, a first water outlet and a second water outlet; the water tank is internally provided with a switching head and a driving mechanism for driving the switching head to move; one end of the switching head is arranged in the first water outlet in a penetrating mode, the other end of the switching head is abutted against the water inlet, and the water inlet is communicated with the first water outlet; the driving mechanism can drive the switching head to rotate in the first water outlet hole and can drive the switching head to slide in the first water outlet hole. This application has the removal of switching head and does not produce the friction with the water tank, and wearing and tearing are little, long service life's effect.

Description

Water flow switching device of fire monitor and combined fire monitor

Technical Field

The application relates to the field of fire monitor, in particular to a water flow switching device of a fire monitor and a combined fire monitor.

Background

The fire monitor is important fire-fighting equipment for fighting fire remotely, and is divided into a fire water monitor and a fire foam monitor, wherein the fire water monitor is fire-fighting equipment for spraying water and fighting general solid matters remotely, and the fire foam monitor is fire-fighting equipment for spraying air foam and fighting liquid fire remotely; the fire monitor is characterized in that the fire monitor is combined with the fire-fighting foam monitor into a whole, a water nozzle and a foam nozzle are simultaneously arranged on a water tank, a switching head is arranged in the water tank, and liquid in the water tank is selected to be communicated with the water nozzle or the foam nozzle, so that the switching of two injection modes is realized, and different fire occasions are met.

In view of the above-mentioned related art, the inventor believes that, when switching the water flow direction, the switching head easily generates friction with the water tank, leads to both the switching head and the water tank to have wearing and tearing, has the defect that life is short, and leakproofness is relatively poor.

Disclosure of Invention

In order to improve the problem that produces friction with the water tank when the switching head removes easily, this application provides a rivers auto-change over device and combination fire gun of fire gun.

In a first aspect, the application provides a water flow switching device for a fire monitor, which adopts the following technical scheme:

a water flow switching device of a fire monitor comprises a water tank with a hollow interior, wherein the water tank is respectively provided with a water inlet, a first water outlet and a second water outlet; the water tank is internally provided with a switching head and a driving mechanism for driving the switching head to move; one end of the switching head is arranged in the first water outlet in a penetrating mode, the other end of the switching head is abutted against the water inlet, and the water inlet is communicated with the first water outlet; the driving mechanism can drive the switching head to rotate in the first water outlet hole and can drive the switching head to slide in the first water outlet hole.

By adopting the technical scheme, after the water inlet is communicated with a water source, water flow can flow into the water tank from the water inlet, and when the water inlet is communicated with the first water outlet through the adapter, the water flow directly enters the adapter from the water inlet and is discharged from the first water outlet through the conveying of the adapter; when the water flow direction needs to be switched, the driving mechanism is used for driving the switching head to move, the switching head is driven to slide in the first water outlet firstly, so that the switching head is separated from the side wall of the water tank, then the switching head is driven to rotate, the switching head is rotated to one side of the water inlet, and finally the switching head slides and is abutted against the side wall of the water tank; at this moment, the water entering from the water inlet can not flow into the switching head, namely can not flow out from the first water outlet, and only can flow into the water tank and then flow out from the second water outlet, so that the switching function of the flow direction of the water flow is realized. At the in-process that the switching head removed, through the mode that now will switch head and water tank separation, make the switching head can not produce the friction between the water tank lateral wall when first water inlet internal rotation to effectual wearing and tearing that have reduced between switching head and the water tank lateral wall have improved the leakproofness and holistic life between switching head and the water tank.

In a second aspect, the present application further provides a combined fire monitor, which adopts the following technical scheme:

a combined fire monitor comprises the water flow switching device of the fire monitor, a base, a monitor head arranged on one side of the base and a conveying pipeline arranged on the base and connected with the monitor head, wherein the water flow switching device is arranged between the monitor head and the conveying pipeline; the gun head comprises a water nozzle and a foam nozzle, the conveying pipeline is connected with the water inlet, the water nozzle is connected with the first water outlet, and the foam nozzle is connected with the second water outlet.

By adopting the technical scheme, the water nozzle is connected with the first water outlet, so that water flowing out of the first water outlet is sprayed out of the water nozzle, the foam nozzle is connected with the second water outlet, and water flowing out of the second water outlet is sprayed out of the foam nozzle; when fire is needed to be extinguished by using water, the switching head is communicated with the water inlet and the first water outlet, water flow is introduced into the water inlet through the conveying pipeline, and the water flow flows into the water nozzle and is sprayed out of the water nozzle; when foam is needed to extinguish a fire, the driving mechanism is used for driving the switch to move, and water flow mixed with foaming agent is introduced into the water inlet through the conveying pipeline, and at the moment, the water flow can be sprayed out from the foam nozzle and mixed with air to form foam, so that the function of spraying the foam is realized; because the switching head can not produce great friction between the water tank when removing, its leakproofness is better, makes the life of fire gun longer.

Drawings

Fig. 1 is a schematic structural diagram of a water flow switching device in an embodiment of the present application.

Fig. 2 is a partial sectional view showing a structure of a switch head inside a tank.

Fig. 3 is a partial view showing a drive mechanism.

Figure 4 is a partial cross-sectional view showing the connection of the tension block and the tension sleeve.

Fig. 5 is a partial sectional view showing the internal structure of the valve block.

Fig. 6 is a partial exploded view showing the connection relationship of the seat body, the gas spring and the pressure relief cap.

Fig. 7 is a partial exploded view showing the structure of the rotating assembly.

Fig. 8 is a schematic structural diagram of a fire monitor in the embodiment of the application.

Fig. 9 is a partial sectional view showing the structure of the gun head.

Figure 10 is a partial view showing the position of the plinth, the conveyor pipes, the slewing mechanism and the pitching mechanism.

Fig. 11 is a partial sectional view showing a connection relationship of the swing mechanism, the support duct, and the main duct.

Fig. 12 is a partial sectional view showing the structure of the turning mechanism.

FIG. 13 is a partial view showing the position of two pneumatic springs.

Description of reference numerals:

1. a water tank; 11. a water inlet; 12. a first water outlet; 13. a second water outlet;

2. switching the head; 21. a main conduit; 22. a branch pipe; 23. a rotating shaft;

3. a tension assembly; 31. mounting a bracket; 32. a valve block; 321. a main flow channel; 322. controlling the flow passage; 323. a vent hole; 324. a screw; 33. a tensioning block; 331. mounting grooves; 3311. a convex edge; 3312. a limiting ring; 333. a secondary flow passage; 34. a tensioning sleeve; 341. a limiting groove; 35. a valve core; 351. a valve housing; 36. a drive member; 37. a base body; 38. a gas spring; 39. a pressure relief cap;

4. a rotating assembly; 41. a drive motor; 42. a motor bracket; 43. a linkage member; 431. a drive gear; 432. a driven gear; 433. a limiting block; 44. a gear case;

5. a base; 51. supporting the pipeline; 52. a flange plate;

6. a gun head; 61. a water spray head; 62. a foam nozzle; 63. a barrel; 64. connecting a bracket; 65. a connecting rod;

7. a delivery conduit; 71. a main pipeline; 72. a transverse conduit; 73. connecting a pipeline;

8. a swing mechanism; 81. installing a box; 82. a rotary motor; 83. a worm; 84. a worm gear; 85. a transmission assembly; 851. a first drive gear; 852. a second transmission gear; 853. a connecting gear;

9. a pitch mechanism; 91. a second push rod motor; 92. a hinged seat; 93. a pneumatic spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-13.

The embodiment of the application discloses rivers auto-change over device of fire monitor.

Referring to fig. 1 and 2, the water flow switching device includes a water tank 1, a switching head 2 disposed in the water tank 1, and a driving mechanism driving the switching head 2 to move; the water tank 1 is arranged in a hollow shell, the water tank 1 can be a cuboid or a cylinder, and the embodiment is arranged in a cylinder, namely the water tank 1 is arranged in a hollow cylinder; one end of the water tank 1 along the axial direction is provided with two water inlets 11, and the other end is respectively provided with a first water outlet 12 and a second water outlet 13; the two water inlets 11 are respectively located on two sides of the axis of the water tank 1 and are symmetrically distributed, the first water outlet 12 is located in the center of the water tank 1, the axis of the first water outlet 12 is overlapped with the axis of the water tank 1, the number of the second water outlets 13 is multiple, the multiple second water outlets 13 are evenly distributed on the edge of the water tank 1, and namely the first water outlets 12 are located among the multiple second water outlets 13. Water flow is introduced into the water tank 1 through the two water inlets 11, the driving mechanism can drive the switching head 2 to move, and the water flow in the water tank 1 is controlled to flow out from the first water outlets 12 or flow out from the second water outlets 13.

Referring to fig. 2, the switching head 2 includes a main pipe 21 connected to the first water outlet 12 and two branch pipes 22 connected to the two water inlets 11, respectively; the axis of the main pipeline 21 is overlapped with the axis of the water tank 1, and one end of the main pipeline 21 is arranged in the first water outlet 12 in a penetrating way, so that the main pipeline 21 can rotate along the axis of the main pipeline and can move along the axial direction of the main pipeline; the two branch pipelines 22 are symmetrically arranged, one ends of the two branch pipelines 22 are fixedly connected with the main pipeline 21 and communicated with the interior of the main pipeline 21, and one ends of the branch pipelines 22 far away from the main pipeline 21 are abutted to the corresponding water inlets 11, so that the two water inlets 11 are communicated with the first water outlet 12; still set firmly the axis of rotation 23 between two lateral conduits 22, the axis of rotation 23 also with the coincidence of the axis of water tank 1, the axis of rotation 23 runs through the outside that extends to water tank 1 behind the lateral wall between two water inlets 11 of water tank 1, the axis of rotation 23 can be followed self axis simultaneously and rotated, can follow self endwise slip again, actuating mechanism installs in the water tank 1 outside and is connected with axis of rotation 23, drive axis of rotation 23 and slide and rotate.

After entering the water tank 1 from the two water inlets 11, the water flows are converged into the main pipeline 21 under the drainage of the two branch pipelines 22 and finally flow out from the first water outlet 12; when the water flow direction is switched, a driving mechanism is used for driving the rotating shaft 23 to move towards the direction close to the first water outlet 12, so that the two branch pipelines 22 are separated from the side wall of the water tank 1, then the rotating shaft 23 is driven to rotate, the switching head 2 is driven to rotate by 90 degrees, at the moment, the two branch pipelines 22 are completely separated from the two water inlets 11, finally the rotating shaft 23 is driven to slide towards one side far away from the first water outlet 12, the two branch pipelines 22 are abutted against the inner side wall of the water tank 1 again, the openings of the two branch pipelines 22 are sealed, and water in the water tank 1 cannot flow into the branch pipelines 22; at this moment, when water is injected into the water tank 1 through the two water inlets 11, water flow in the water tank 1 cannot enter the branch pipeline 22, cannot flow out of the first water outlet 12 through the main pipeline 21, and can only flow out of the second water outlets 13, so that the function of switching the flow direction of the water flow is realized. Meanwhile, when the water flow direction is switched, the two branch pipelines 22 do not contact with the side wall of the water tank 1 in the rotating process, so that friction is not generated between the branch pipelines 22 and the water tank 1, and the sealing performance and the service life of the joint of the branch pipelines 22 and the water tank 1 are effectively improved.

Referring to fig. 2, sealing rings are respectively installed at the joint of the rotating shaft 23 and the water tank 1 and the joint of the main pipe 21 and the first water outlet 12, so that the rotating shaft 23 and the switching head 2 are ensured to be connected with the water tank 1 in the moving process; a sealing ring is also installed at one end of the branch pipe 22 far away from the main pipe 21, and the branch pipe 22 is abutted against the side wall of the water tank 1 through the sealing ring, so that the sealing performance between the connecting pipe 73 and the water tank 1 is ensured.

Referring to fig. 1, the driving mechanism includes a tensioning assembly 3 and a rotating assembly 4, the tensioning assembly 3 is used for driving the rotating shaft 23 to slide along the axial direction thereof, and the rotating assembly 4 is used for driving the rotating shaft 23 to rotate along the axis thereof.

Referring to fig. 3 and 4, the tensioning assembly 3 includes a mounting bracket 31, a valve block 32 disposed on the mounting bracket 31, a tensioning block 33 fixedly disposed on one side of the valve block 32, and a tensioning sleeve 34 sleeved in the tensioning block 33. The end of the tensioning block 33, which is far away from the valve block 32, is provided with a mounting groove 331, the tensioning sleeve 34 is sleeved in the mounting groove 331, the tensioning block 33 is further provided with a mounting hole, the axis of the mounting hole coincides with the axis of the tensioning sleeve 34, and the rotating shaft 23 penetrates through the mounting hole and then is sleeved in the tensioning sleeve 34 and fixedly connected with the same. The inner diameter of the mounting groove 331 is larger than the outer diameter of the tension sleeve 34, namely, the tension sleeve 34 and the inner side wall of the mounting groove 331 are arranged at intervals, a convex edge 3311 is fixedly arranged at the opening of the mounting groove 331, the tension sleeve 34 is sleeved in the convex edge 3311, so that the tension sleeve 34 can rotate along the axis of the tension sleeve and can also slide along the axial direction of the tension sleeve, and when the branch pipeline 22 is abutted on the water tank 1, the tension sleeve 34 and the groove bottom of the mounting groove 331 are arranged at intervals.

Referring to fig. 3 and 5, a main flow passage 321 through which liquid can flow is formed in the valve block 32, a sub flow passage 333 through which liquid can flow is formed in the tension block 33, the main flow passage 321 communicates with the sub flow passage 333, and one end of the sub flow passage 333 away from the main flow passage 321 communicates with the mounting groove 331 so that liquid can flow between the mounting sleeve and the bottom of the mounting groove 331. The valve block 32 is further provided with a control flow channel 322, the control flow channel 322 is located at one end of the main flow channel 321 far away from the auxiliary flow channel 333, and the control flow channel 322 is communicated with the main flow channel 321; the control flow passage 322 in the main flow passage 321 penetrates the valve block 32 to be communicated with the outside; and a valve core 35 is slidably connected in the control flow passage 322, one end of the valve core 35 is located in the control flow passage 322, and the other end extends to the outside of the control flow passage 322. The tensioning assembly 3 further comprises a driving member 36, the driving member 36 is connected to the spool 35, and the driving member 36 is configured to drive the spool 35 to slide in the control flow passage 322.

The main flow passage 321, the secondary flow passage 333, the mounting groove 331 and the control flow passage 322 are filled with liquid such as hydraulic oil or engine oil, the driving member 36 drives the valve core 35 to slide to the outside of the control flow passage 322, at this time, the space in which the hydraulic oil can be stored in the control flow passage 322 is increased, and because the valve core is in a sealed state with the inside of the valve block 32, negative pressure is generated in the control flow passage 322, so that the hydraulic oil in the main flow passage 321 is pumped to flow into the control flow passage 322, meanwhile, the hydraulic oil in the mounting groove 331 also flows into the secondary flow passage 333, so that the hydraulic oil in the mounting groove 331 is reduced, at this time, negative pressure is also generated in the mounting groove 331, and the tensioning sleeve 34 is correspondingly driven to slide to one side close to the bottom of the mounting groove 331, that is the rotating shaft 23 is driven to slide to one side close to the first water outlet 12, so that the branch passage 22 is separated from the side wall of the water tank 1; on the contrary, in the same way, when the driving element 36 drives the valve core 35 to slide into the control flow channel 322, the hydraulic oil drives the tensioning sleeve 34 to slide towards the side away from the bottom of the mounting groove 331, that is, the rotating shaft 23 is driven to slide towards the side away from the first water outlet 12.

Referring to fig. 3, the driving member 36 is a first push rod motor, a cylinder of the first push rod motor is fixedly connected to the mounting bracket 31, and a piston rod is fixedly connected to one end of the valve core 35 extending out of the control flow channel 322, and the function of driving the valve core 35 to slide can be achieved by controlling the extension and retraction of the piston rod of the first push rod motor.

Referring to fig. 4, a position-limiting ring 3312 is further fixedly disposed on the bottom of the mounting groove 331, an outer diameter of the position-limiting ring 3312 is smaller than an inner diameter of the mounting groove 331, and an outer sidewall of the position-limiting ring 3312 is a conical surface with a diameter gradually decreasing toward a side close to the tension sleeve 34; the tensioning sleeve 34 is close to the spacing groove 341 that the inside wall is the conical surface equally offered to the one end of spacing ring 3312, spacing ring 3312 butt is on the tank bottom of spacing groove 341, and be the interval setting between the lateral wall of spacing ring 3312 and the lateral wall of spacing groove 341, not only can play limiting displacement to the tensioning sleeve 34, can also guarantee that the tensioning sleeve 34 has hydraulic oil forever along between the tank bottom of its axial one end and mounting groove 331, the smooth and easy of hydraulic oil flow of being convenient for, make the tensioning sleeve 34 can be smooth to the mounting groove 331 outside slide.

In addition, referring to fig. 4 and 5, in order to improve the sealing performance between the valve core 35 and the valve block 32, a valve sleeve 351 is further sleeved between the valve core 35 and the control flow channel 322, and sealing rings are also mounted between the valve sleeve 351 and the valve core 35 and between the valve sleeve 351 and the inner side wall of the control flow channel 322; correspondingly, in order to improve the sealing performance of the joint of the tensioning sleeve 34, sealing rings are also arranged at the joint of the tensioning sleeve 34 and the tensioning block 33, the joint of the tensioning sleeve 34 and the rotating shaft 23 and the joint of the tensioning block 33 and the rotating shaft 23.

Referring to fig. 3 and 6, a seat body 37 is further disposed on the valve block 32, the seat body 37 is disposed in a sleeve shape, the seat body 37 is communicated with the main flow passage 321, a gas spring 38 is mounted in the seat body 37, a cylinder body of the gas spring 38 abuts against the seat body 37, a telescopic rod of the gas spring 38 extends into the seat body 37, and a sealing ring is also mounted between the telescopic rod of the gas spring 38 and the seat body 37; a pressure relief cap 39 is further connected to the seat body 37 through threads, and the pressure relief cap 39 presses the gas spring 38 in the seat body 37. When the valve block 32 is installed, hydraulic oil can be injected into the main flow passage 321 through the seat body 37, after the hydraulic oil is filled, the gas spring 38 is placed, the pressure relief cap 39 is screwed, and in the process of screwing the pressure relief cap 39, the gas spring 38 can gradually compress the hydraulic oil in the seat body 37, so that the pressure of the hydraulic oil in the valve block 32 is ensured.

Referring to fig. 3 and 6, the valve block 32 is further provided with a vent hole 323, the vent hole 323 is also communicated with the main flow passage 321, a screw 324 is connected to the vent hole 323 through a thread, and the vent hole 323 is sealed by the screw 324; before hydraulic oil is injected, the screw 324 is screwed out of the vent hole 323, in the process of injecting the hydraulic oil, air in the main flow passage 321 is discharged from the vent hole 323, so that the hydraulic oil can fill the whole valve block 32, when the hydraulic oil is ejected from the vent hole 323, the screw 324 is screwed into the vent hole 323, then the hydraulic oil is continuously injected into the seat body 37 until the page of the hydraulic oil reaches the sealing ring of the gas spring 38, at the moment, the gas spring 38 is installed on the seat body 37, the pressure relief cap 39 is screwed on the seat body 37, and the gas spring 38 is tightly pressed on the seat body 37; finally, the first push rod motor is repeatedly operated to perform the telescopic adjustment of the full stroke, the content of hydraulic oil in the valve block 32 is properly increased or reduced according to the moving states of the tensioning sleeve 34 and the rotating shaft 23, and the moving stroke of the rotating shaft 23 when the first push rod motor operates is ensured.

Referring to fig. 3 and 7, the rotating assembly 4 includes a driving motor 41 and a motor bracket 42, one end of the rotating shaft 23 passes through the tension sleeve 34 and then is rotatably connected to the motor bracket 42, the motor is fixed on the motor bracket 42, a linkage 43 is arranged between an output shaft of the driving motor 41 and the rotating shaft 23, and the driving motor 41 drives the rotating shaft 23 to rotate through the linkage 43, so as to realize the function of controlling the rotating shaft 23 to rotate.

Referring to fig. 7, the linkage 43 includes a driving gear 431 fixedly disposed on the output shaft of the driving motor 41, and a driven gear 432 sleeved on the rotating shaft 23, wherein the driving gear 431 and the driven gear 432 are engaged with each other; the driving motor 41 drives the driving gear 431 to rotate, and drives the rotating shaft 23 to rotate through the driven gear 432, so as to realize the function of rotating the rotating shaft 23. Meanwhile, the motor bracket 42 is also provided with a gear box 44, and the driving gear 431 and the driven gear 432 are both arranged in the gear box 44, so that the driving gear 431 and the driven gear 432 are protected.

Also, referring to fig. 7, the driven gear 432 is provided in a sector shape, and the central angle of the driven gear 432 is 120 °, that is, the meshing stroke of the driving gear 431 and the driven gear 432 is 120 °, so that the maximum rotation angle of the rotation shaft 23 is ensured to be 120 °. Meanwhile, in order to prevent the driven gear 432 from being disengaged from the driving gear 431 due to an excessively large rotation angle, two limiting blocks 433 are further fixedly arranged on the motor bracket 42, and the driven gear 432 is positioned between the two limiting blocks 433 to rotate; when the switching head 2 is communicated with the two water inlets 11, one side wall of the driven gear 432 along the circumferential direction is in an abutting state with one limiting block 433, and after the switching head rotates to abut against the other limiting block 433, the driven gear 432 cannot continue to rotate, so that the driven gear 432 cannot be disengaged from the driving gear 431.

The implementation principle of the water flow switching device of the fire monitor in the embodiment of the application is as follows: through driving switching head 2 earlier with the separation of 1 lateral walls of water tank, drive switching head 2 pivoted method again, realize rivers in 1 switching of flow direction of water tank, control mode is simple convenient, and in switching head 2 rotation process, two lateral conduits 22 do not produce the friction in the inside wall of water tank 1, the effectual leakproofness and the life that improves the junction of lateral conduit 22 and water tank 1.

The embodiment of the application also discloses a combined fire monitor, which comprises the water flow switching device.

Referring to fig. 8, the combined fire monitor comprises a base 5, a monitor head 6 arranged on one side of the base 5, and a conveying pipeline 7 arranged on the base 5 and connected with the monitor head 6; the base 5 is used for integrally mounting the fire monitor on equipment such as a fire engine and the like and communicating the conveying pipeline 7 with a water source; the delivery pipe 7 delivers water flow into the gun head 6 and is sprayed out from the gun head 6, thereby realizing the function of fire fighting.

Wherein, referring to fig. 1 and 9, the gun head 6 includes a water jet head 61 for spraying water and a plurality of foam jet heads 62 for ejecting foam; the water flow switching device is arranged between the conveying pipeline 7 and the gun head 6, the water spray heads 61 are connected with the water tank 1 and communicated with the first outlet, the plurality of foam spray heads 62 correspond to the plurality of second water outlets 13 one by one, each foam spray head 62 is arranged on the water tank 1 and communicated with the second water outlets 13, and the conveying pipeline 7 is connected with the two water inlets 11 on the water tank 1, so that the water flow switching device can control water flow to flow into the water spray heads 61 or the plurality of foam spray heads 62; when water needs to be sprayed, the two branch pipelines 22 are connected with the conveying pipeline 7, and water flow in the conveying pipeline 7 enters the water spray head 61 through the two branch pipelines 22 and the main pipeline 21 and is sprayed out of the water spray head 61; if foam needs to be sprayed, the two branch pipelines 22 are rotated to one side of the two water inlets 11, water containing foaming agents is introduced into the water tank 1 through the conveying pipeline 7 and is sprayed out from the plurality of foam nozzles 62, and the two functions of water spraying and foam spraying are switched.

Referring to fig. 9, the gun head 6 further comprises a gun barrel 63, the gun barrel 63 is sleeved on the whole water spray 61 and the plurality of foam spray heads 62, a connecting bracket 64 is fixedly arranged at one end of the water spray 61 far away from the water tank 1, and the connecting bracket 64 is fixedly connected with the inner side wall of the gun barrel 63; a plurality of connecting rods 65 are fixedly arranged on the end surface of the water tank 1, and one ends of the connecting rods 65 far away from the water tank 1 are also fixedly connected with the inner side wall of the gun barrel 63, so that the gun barrel 63 is supported on the water tank 1; and the barrel 63 is arranged at a distance from the water tank 1, so that when the foam nozzle 62 sprays foam, air can enter the barrel 63 from the opening at the bottom of the barrel 63 and be fully mixed with the foam, the foam degree is improved, and a plurality of sprayed foam beams can be converged at the opening at the top end of the barrel 63 and then sprayed out, so that a plurality of foam beams are gathered together.

Referring to fig. 10, the base 5 includes a support pipe 51 and a flange 52 fixed to a lower end of the support pipe 51, and the support pipe 51 is installed to a fire engine or the like through the flange 52 and the support pipe 51 is connected to a water source. The conveying pipeline 7 comprises a main pipeline 71, the main pipeline 71 is sleeved on the supporting pipeline 51 and communicated with the inside of the supporting pipeline, a transverse pipeline 72 is fixedly arranged at the top end of the main pipeline 71, and the main pipeline 71 is positioned in the middle of the transverse pipeline 72 along the axial direction; two ends of the transverse pipeline 72 are both provided with connecting pipelines 73, one end of each connecting pipeline 73, which is far away from the transverse pipeline 72, is bent towards one side of the water tank 1 and is connected to the corresponding water inlet 11, and the two connecting pipelines 73 are symmetrically arranged; the water flow enters the main pipe 71 from the support pipe 51 and flows into the two connecting pipes 73 through the main pipe 71 and the transverse pipes 72, respectively, and finally merges into the water tank 1. The use of two connecting pipes 73 allows the weight of both sides to be balanced, ensuring that one side of the gun head 6 remains stable when spraying water or foam.

Referring to fig. 10, the main pipe 71 is rotatably connected to the support pipe 51 so that the orientation of the gun head 6 can be rotated along the axis of the support pipe 51, and the main pipe 71 is provided with a turning mechanism 8 for turning the main pipe 71; the connecting pipeline 73 is also rotationally connected with the transverse pipeline 72, so that the orientation of the gun head 6 can also rotate along the axis of the transverse pipeline 72, and a pitching mechanism 9 for driving the gun head 6 to rotate along the axis of the transverse pipeline 72 is further arranged for adjusting the pitching angle of the gun head 6; under the cooperation of the slewing mechanism 8 and the pitching mechanism 9, the direction of the gun head 6 can be adjusted at will.

Referring to fig. 11 and 12, the swing mechanism 8 includes a mounting box 81 fixedly disposed on an outer side wall of the main sleeve, a worm 83 is rotatably connected in the mounting box 81, the swing mechanism 8 further includes a worm wheel 84 fixedly connected to the support sleeve, the worm wheel 84 is disposed between the main sleeve and the support sleeve, a yielding groove is formed in the support sleeve, and the worm 83 penetrates through the yielding groove and is meshed with the worm wheel 84. The installation box 81 is far away from one side of worm 83 and is installed rotary motor 82, is provided with drive assembly 85 between rotary motor 82's the output shaft and the worm 83, and rotary motor 82 drives worm 83 through drive assembly 85 and rotates, and when worm 83 rotated, because worm wheel 84 rigidity made worm 83 rotate along the axis of worm wheel 84 to drive whole main sleeve and rotate, realize the gyration action of big gun head 6. Meanwhile, a sealing ring is also arranged above the worm wheel 84 between the main sleeve and the supporting sleeve, so that the sealing performance of the joint of the main pipeline 71 and the supporting pipeline 51 is ensured, and water is prevented from entering the meshing part of the worm wheel 84 and the worm 83.

Referring to fig. 12, the transmission assembly 85 includes a first transmission gear 851 and a second transmission gear 852, the first transmission gear 851 is fixedly connected with an output shaft of the rotary motor 82, the second transmission gear 852 is fixedly connected with the worm 83, a connection gear 853 is disposed between the first transmission gear 851 and the second transmission gear 852, and the connection gear 853 is simultaneously meshed with the first transmission gear 851 and the second transmission gear 852, so as to realize transmission between the rotary motor 82 and the worm 83, and the rotary motor 82 and the worm 83 are disposed side by side, so that the occupied space of the rotary mechanism 8 is reduced, and the compactness of the whole structure is improved.

Referring to fig. 10, the pitching mechanism 9 includes a second push rod motor 91, the second push rod motor 91 is located above the position between the two connecting pipes 73, two hinge seats 92 are fixedly arranged on the outer side wall of the transverse pipe 72, the cylinder body of the second push rod motor 91 is hinged between the two hinge seats 92, and the piston rod of the second push rod motor 91 is hinged on the outer side wall of the water tank 1; when the piston rod of the second push rod motor 91 extends out of the cylinder body of the second push rod motor 91, the whole length of the second push rod motor 91 is increased, namely the water tank 1 is pushed to rotate downwards along the axis of the transverse pipeline 72, so that the elevation angle of the gun head 6 is reduced; on the contrary, when the piston rod of the second push rod motor 91 is retracted into the cylinder body, the whole length of the second push rod motor 91 is reduced, the water tank 1 is pulled to rotate upwards along the axis of the transverse pipeline 72, the elevation angle of the gun head 6 is increased, and the adjustment of the pitching angle of the gun head 6 is realized.

Referring to fig. 13, the pitching mechanism 9 further comprises two pneumatic springs 93, the two pneumatic springs 93 are located at a position below and between the two connecting pipes 73, the pneumatic springs 93 are supported between the water tank 1 and the main sleeve, the cylinder body of the pneumatic spring 93 is hinged on the outer side wall of the water tank 1, and the piston rod is hinged on the outer side wall of the main sleeve; when the second push rod motor 91 drives the monitor head 6 to move, the two pneumatic springs 93 stretch and move along with the monitor head 6, so that the supporting force of the water tank 1 and the monitor head 6 is improved, and the stability of the fire monitor in the operation process is ensured.

Meanwhile, the type of the sealing ring can be selected according to the connection mode, sliding sealing or rotating sealing can be selected, the mode that the sliding sealing and the rotating sealing are matched with each other can also be selected, labyrinth sealing can also be selected, and the sealing degree of the whole fire monitor is guaranteed. The drive motor 41 and the rotary motor 82 can select a stepping motor or a servo motor, the control precision is high, and the control requirement of the fire monitor is met.

The implementation principle of a combination fire monitor of the embodiment of the application is as follows: the switching between the water spraying function and the foam function of the fire monitor is realized through the matching of the water tank 1 and the switching head 2, and during the switching, the branch pipeline 22 and the inner side wall of the water tank 1 cannot generate friction, so that the sealing performance is good, and the service life is long; meanwhile, under the matching action of the slewing mechanism 8 and the pitching mechanism 9, the cannon head 6 realizes the adjustment of the slewing angle and the pitching angle of the cannon head 6, so that the cannon head 6 can adjust the position and the attitude according to the position environment, and the practicability of the fire monitor is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides a rivers auto-change over device of fire monitor which characterized in that: comprises a water tank (1) with a hollow inner part, a switching head (2) arranged in the water tank (1) (1) and a driving mechanism for driving the switching head (2) to move;

the water tank (1) is provided with two water inlets (11) along one axial end, the other end is provided with a first water outlet (12) and a second water outlet (13) respectively, the two water inlets (11) are located on two sides of the axis of the water tank (1) respectively and are symmetrically distributed, the first water outlet (12) is located in the center of the water tank (1), and the axis of the first water outlet (12) is overlapped with the axis of the water tank (1);

the switching head (2) comprises a main pipeline (21) connected with the first water outlet (12) and two branch pipelines (22) respectively connected with the two water inlets (11), the axis of the main pipeline (21) coincides with the axis of the water tank (1), one ends of the two branch pipelines (22) are fixedly connected with the main pipeline (21), one ends of the branch pipelines (22) far away from the main pipeline (21) are abutted to the corresponding water inlets (11), a rotating shaft (23) is fixedly arranged between the two branch pipelines (22), the rotating shaft (23) penetrates through the side wall of the water tank (1) between the two water inlets (11) and then extends to the outer side of the water tank (1), and the axis of the rotating shaft (23) is coincided with the axis of the first water outlet (12), the driving mechanism can drive the rotating shaft (23) to rotate and can drive the rotating shaft (23) to slide along the axial direction of the rotating shaft;

the driving mechanism comprises a tensioning assembly (3) for driving the rotating shaft (23) to slide and a rotating assembly (4) for driving the rotating shaft (23) to rotate; the tensioning assembly (3) comprises a valve block (32) arranged on one side of the water tank (1), a tensioning block (33) arranged on the valve block (32) and a tensioning sleeve (34) arranged on the tensioning block (33); the tensioning block (33) is provided with a mounting hole and a mounting groove (331), the axis of the mounting hole is overlapped with the axis of the tensioning sleeve (34), and the tensioning sleeve (34) is sleeved in the mounting groove (331); the rotating shaft (23) penetrates through the mounting hole and extends into the tensioning sleeve (34) to be fixedly connected with the tensioning sleeve; a main runner (321) and a control runner (322) are formed in the valve block (32), an auxiliary runner (333) is formed in the tensioning block (33), the main runner (321) communicates the control runner (322) with the auxiliary runner (333), the tensioning sleeve (34) is arranged at an interval with the bottom of the mounting groove (331), and the auxiliary runner (333) is communicated with the inside of the mounting groove (331); the tensioning assembly (3) further comprises a valve core (35) connected in the control flow channel (322) in a sliding manner and a driving piece (36) used for driving the valve core (35) to slide;

a limiting ring (3312) is fixedly arranged on the bottom of the mounting groove (331), and the outer side wall of the limiting ring (3312) is arranged in a conical surface with the diameter gradually reduced towards one side close to the tensioning sleeve (34); a limiting groove (341) is formed in one end, close to the mounting groove (331), of the tensioning sleeve (34), and the limiting ring (3312) abuts against the limiting groove (341); the limiting groove (341) and the limiting ring (3312) are arranged at intervals along the circumferential side wall, and hydraulic oil is filled in the main flow passage (321), the auxiliary flow passage (333), the mounting groove (331) and the control flow passage (322).

2. The water flow switching device for a fire monitor according to claim 1, wherein: the valve block (32) is provided with a seat body (37), and the seat body (37) is hollow and communicated with the main flow channel (321); the seat body (37) can be detachably connected with a pressure relief cap (39) for sealing the opening of the seat body; the valve block (32) is provided with a vent hole (323), and a screw (324) is detachably connected in the vent hole (323).

3. The water flow switching device of the fire monitor as recited in claim 2, wherein: an opening of the base body (37) is further provided with a gas spring (38), a cylinder body of the gas spring (38) is installed on the base body (37), a piston rod of the gas spring (38) extends into the base body (37), and the pressure relief cap (39) presses the gas spring (38) on the base body (37).

4. The water flow switching device for a fire monitor according to claim 1, wherein: the rotating mechanism comprises a motor support (42) and a rotary motor (82) arranged on the motor support (42), one end of the rotating shaft (23) extending out of the water tank (1) is rotatably connected with the motor support (42), and a linkage piece (43) is arranged between the rotary motor (82) and the rotating shaft (23).

5. The water flow switching device for the fire monitor as recited in claim 4, wherein: the linkage piece (43) comprises a driving gear (431) fixedly arranged on an output shaft of the driving motor (41) and a driven gear (432) sleeved on the rotating shaft (23), the driving gear (431) is meshed with the driven gear (432), the driving motor (41) drives the driving gear (431) to rotate, and the driven gear (432) drives the rotating shaft (23) to rotate.

6. The utility model provides a combination fire monitor which characterized in that: comprising a water flow switching device according to any one of the preceding claims 1-5; the water flow switching device is arranged between the gun head (6) and the conveying pipeline (7); the gun head (6) comprises a water nozzle (61) and a foam nozzle (62), the conveying pipeline (7) is connected with the water inlet (11), the water nozzle (61) is connected with the first water outlet (12), and the foam nozzle (62) is connected with the second water outlet (13).

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