A high-pressure fine water mist spray gun with rapid switching

Abstract

The present invention discloses a high-pressure fine water mist spray gun with quick switching, which comprises a gun body. A gun head is arranged at the top end of the gun body, and a spray head is installed at the end of the gun head. A sleeve is snap-fitted on the surface of the gun head, and the spray head is clamped between the gun head and the sleeve. An inlet communicating with the inside of the gun body is arranged at the bottom end of the gun body. A three-way conversion ball valve is arranged inside the gun body. An annular hole and a plurality of axial through holes are formed inside the gun head. The end of the axial through hole communicates with the annular hole. A pipe fitting is arranged at the top of the gun body, and one end of the pipe fitting penetrates to the inside of the annular hole. Through the three-way conversion ball valve and the conversion switch, the present invention realizes the quick conversion between the direct current spraying and the spraying with a diffusion angle of the water gun, which is quick and easy to operate, solves the problem of inconvenient center conversion in the prior art, brings convenience to the actual operation of the operator, and improves the operation efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire-fighting equipment, and particularly relates to a high-pressure fine water mist spray gun with quick switching. Background Technique

[0002] The high-pressure fine water mist spray gun not only has the functions of efficient water conservation, safety and environmental protection for fire extinguishing, but also the water mist ejected by the high-pressure fine water mist spray gun has the effects of cooling, pressure reduction and toxicity reduction. Under the triple effects of cooling, suffocation and heat radiation isolation, the purpose of controlling, suppressing and extinguishing fires is achieved. The fine water mist fire extinguishing system has the dual functions and advantages of water spray and gas fire extinguishing. It has both the cooling effect of the water spray system and the suffocation effect of the gas fire extinguishing system. Therefore, it is a very good fire extinguishing technology worthy of popularization. The water flow ejected by the straight stream water gun is columnar, with a long range, large flow rate and strong impact force, and is used for extinguishing general solid substance fires and auxiliary cooling during fire extinguishing. The water flow ejected by the diffusion angle spray water gun is in a dispersed state, with the characteristics of large area and large flow rate.

[0003] At present, although the above-mentioned straight stream water gun and diffusion angle spray water gun can be combined for combined application, in the actual conversion process, it is necessary to rotate the conversion sleeve of the gun head to achieve, and the operation is relatively cumbersome, not very fast and convenient, which will bring inconvenience to the actual operation of the operator and there are certain drawbacks. Therefore, the present invention proposes a high-pressure fine water mist spray gun with quick switching. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-pressure fine water mist spray gun with quick switching to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A high-pressure fine water mist spray gun with quick switching, including a gun body, a gun head is provided at the top end of the gun body, a spray head is installed at the end of the gun head, a sleeve is snap-fitted on the surface of the gun head, and the spray head is clamped between the gun head and the sleeve. An inlet communicating with the inside of the gun body is provided at the bottom end of the gun body. A three-way conversion ball valve is provided inside the gun body. An annular hole and a plurality of axial through holes are opened inside the gun head. The end of the axial through hole communicates with the annular hole. A pipe fitting is provided at the top of the gun body. One end of the pipe fitting penetrates to the inside of the annular hole, and the other end of the pipe fitting penetrates into the gun body and is connected to the three-way conversion ball valve. A conversion switch connected to the three-way conversion ball valve is installed on the surface of the gun body. A core shaft is installed inside the top end of the gun body, and the gun head is sleeved on the core shaft. A direct current hole is opened at the center of the spray head, and a plurality of axial through holes are uniformly opened on the surface of the spray head relative to the outside of the direct current hole. A clamping mechanism is provided between the sleeve and the gun head.

[0006] Preferably, the engaging mechanism includes two rectangular grooves symmetrically formed inside the sleeve. Inside the rectangular grooves are provided a rectangular push plate, a spring, a right trapezoidal locking block, a pull rod, and an outer pull plate. The top end of the pull rod is fixed to the rectangular push plate. The spring is sleeved on the pull rod. The right trapezoidal locking block is fixed to one side surface of the rectangular push plate. The outer pull plate is arranged outside the sleeve, and the bottom end of the pull rod penetrates to the outside of the sleeve and is rotatably connected to the outer pull plate. A card slot corresponding to the right trapezoidal locking block is formed on the surface of the gun head, and the top end of the right trapezoidal locking block penetrates to the inside of the card slot.

[0007] Preferably, a rotating rod with a T-shaped cross-section is fixed to the bottom end of the pull rod. The outer pull plate is sleeved on the rotating rod, and an arc-shaped pull handle is fixed to one side surface of the outer pull plate.

[0008] Preferably, two supporting blocks are symmetrically fixed to the other side surface of the outer pull plate relative to both sides of the pull rod. Two jacks corresponding to the supporting blocks are symmetrically formed on the surface of the sleeve, and the end portions of the supporting blocks penetrate into the rectangular grooves through the jacks.

[0009] Preferably, a rod hole corresponding to the pull rod is formed at the bottom end of the rectangular groove, and the rod hole communicates with the outer surface of the sleeve.

[0010] Preferably, two second O-ring seals are provided between the gun head and the mandrel, and the annular hole is located between the two second O-ring seals.

[0011] Preferably, two first O-ring seals are provided between the spray head and the gun head, and the axial through hole is located between the two first O-ring seals.

[0012] Preferably, a grip is provided at the bottom of the gun body, and an anti-slip pad is installed on the surface of the grip.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention realizes the rapid conversion between the direct injection and the spray injection with a diffusion angle of the water gun through the three-way conversion ball valve and the conversion switch, which is fast and easy to operate, solves the problem of inconvenient center conversion in the prior art, brings convenience to the actual operation of the operator, and improves the operation efficiency.

[0015] 2. By providing an engaging mechanism composed of structures such as rectangular grooves, rectangular push plates, springs, right trapezoidal locking blocks, pull rods, and outer pull plates, the sleeve can be quickly installed and disassembled on the surface of the gun head, improving the convenience of disassembly and assembly of the sleeve, and also facilitating the disassembly and replacement of the spray head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 It is a partial enlarged view of the clamping mechanism of the present invention;

[0018] Figure 3 For the present invention Figure 2 It is a partial enlarged view of area A in the present invention;

[0019] In the figure: 1, three-way conversion ball valve; 2, conversion switch; 3, pipe fitting; 4, mandrel; 5, gun head; 51, clamping groove; 6, nozzle; 7, sleeve; 8, first O-ring seal; 9, clamping mechanism; 91, rectangular groove; 92, rectangular push plate; 93, spring; 94, right trapezoidal clamping block; 95, pull rod; 96, outer pull plate; 97, support block; 10, second O-ring seal; 11, grip; 12, annular hole; 13, axial through hole. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment

[0022] Please refer to Figures 1 to 3, the present invention provides a technical solution: a high-pressure fine water mist spray gun with quick switching, including a gun body. A gun head 5 is provided at the top of the gun body. A spray head 6 is installed at the end of the gun head 5. A sleeve 7 is snap-fitted on the surface of the gun head 5, and the spray head 6 is clamped between the gun head 5 and the sleeve 7. The sleeve 7 can prevent the impact from damaging the spray head 6. An inlet port communicating with the inside of the gun body is provided at the bottom end of the gun body. A three-way conversion ball valve 1 is arranged inside the gun body. An annular hole 12 and a plurality of axial through holes 13 are opened inside the gun head 5. The ends of the axial through holes 13 communicate with the annular hole 12. A pipe fitting 3 is provided at the top of the gun body. One end of the pipe fitting 3 penetrates to the inside of the annular hole 12, and the other end of the pipe fitting 3 penetrates into the gun body and is connected to the three-way conversion ball valve 1. A conversion switch 2 connected to the three-way conversion ball valve 1 is installed on the surface of the gun body. A mandrel 4 is installed inside the top end of the gun body, and the gun head 5 is sleeved on the mandrel 4. A direct current hole is opened at the center of the spray head 6. A plurality of axial through holes 13 are evenly opened on the surface of the spray head 6 relative to the outside of the direct current hole. After the three-way conversion ball valve 1 is rotated by the conversion switch 2, the water flow inside the gun body will be conveyed to the annular hole 12 and the axial through holes 13 through the pipe fitting 3, so as to realize the switching of the spray gun diffusion angle spray jet. A clamping mechanism 9 is arranged between the sleeve 7 and the gun head 5. The pipe fitting 3 and the spray head 6 are both made of SUS304 stainless steel. The pipe fitting 3 can withstand relatively large pressure. The spray head 6 has good corrosion resistance and acid resistance and a long service life.

[0023] In this embodiment, preferably, the clamping mechanism 9 includes two rectangular grooves 91 symmetrically opened inside the sleeve 7. A rectangular push plate 92, a spring 93, a right-angled trapezoidal clamping block 94, a pull rod 95 and an outer pull plate 96 are arranged inside the rectangular groove 91. The top end of the pull rod 95 is fixed to the rectangular push plate 92. The spring 93 is sleeved on the pull rod 95. The right-angled trapezoidal clamping block 94 is fixed on one side surface of the rectangular push plate 92. The outer pull plate 96 is arranged outside the sleeve 7, and the bottom end of the pull rod 95 penetrates to the outside of the sleeve 7 and is rotatably connected to the outer pull plate 96. A clamping groove 51 corresponding to the right-angled trapezoidal clamping block 94 is opened on the surface of the gun head 5. The top end of the right-angled trapezoidal clamping block 94 penetrates to the inside of the clamping groove 51, so that the sleeve 7 is convenient for disassembly and assembly.

[0024] In this embodiment, preferably, a rotating rod with a T-shaped cross section is fixed to the bottom end of the pull rod 95. The outer pull plate 96 is sleeved on the rotating rod, so that the outer pull plate 96 can rotate smoothly at the bottom end of the pull rod 95. An arc-shaped pull handle is fixed on one side surface of the outer pull plate 96, which is easy for the operator to pull the outer pull plate 96.

[0025] In this embodiment, preferably, two support blocks 97 are symmetrically fixed to the other side surface of the outer pull plate 96 relative to both sides of the pull rod 95. Two jack holes corresponding to the support blocks 97 are symmetrically formed on the surface of the sleeve 7. The end of the support block 97 passes through the jack hole into the rectangular groove 91, so that after the outer pull plate 96 is pulled, it can be supported and limited by the support block 97 in a rotating manner, thereby further improving the disassembly and assembly convenience of the sleeve 7.

[0026] In this embodiment, preferably, a rod hole corresponding to the pull rod 95 is formed at the bottom end of the rectangular groove 91, and the rod hole communicates with the outer side surface of the sleeve 7.

[0027] In this embodiment, preferably, two second O-ring seals 10 are provided between the gun head 5 and the mandrel 4. The second O-ring seals are made of rubber material, and the annular hole 12 is located between the two second O-ring seals 10, which can improve the sealing performance between the gun head 5 and the mandrel 4.

[0028] In this embodiment, preferably, two first O-ring seals 8 are provided between the nozzle 6 and the gun head 5. The first O-ring seals 8 are made of rubber material, and the axial through hole 13 is located between the two first O-ring seals 8, which can improve the sealing performance between the nozzle 6 and the gun head 5.

[0029] In this embodiment, preferably, a grip 11 is provided at the bottom of the gun body, and an anti-slip pad is installed on the surface of the grip 11, which is convenient for the operator to hold the gun body.

[0030] The mandrel 4, the gun head 5, the sleeve 7 and the grip 11 are all made of aluminum alloy material, which not only has high strength and corrosion resistance, but also has the advantage of light weight, greatly reducing the weight of the gun body and making it more convenient and fast to use.

[0031] The working principle and usage process of the present invention: When the high-pressure fine water mist spray gun with quick switching is in use, during normal use, the water flow inside the gun body will enter the internal channel of the gun body through the water inlet, and then flow to the inside of the mandrel 4 through one of the channels inside the three-way conversion ball valve 1, and is sprayed out through the direct current hole at the center of the nozzle 6, so as to realize the direct current spraying of the water gun. When it is necessary to adopt the spray spraying with a diffusion angle, only need to rotate the conversion switch 2, so that the three-way conversion ball valve 1 intercepts the water flow inside the gun body and guides it into the pipe fitting 3, and then directly input it into the inside of the annular hole 12 through the pipe fitting 3, and finally realize the spray spraying with a diffusion angle through the axial through holes 13 on the gun head 5 and the nozzle 6;

[0032] When it is necessary to remove the sleeve 7, just pull the outer pull plate 96 forcefully, causing the pull rod 95 to pull the rectangular push plate 92 and the spring 93, and making the end of the right trapezoidal block 94 gradually move away from the inner side of the card slot 51 until the support block 97 can be pulled to the outside of the sleeve 7. At this time, rotate the outer pull plate 96 so that the support block 97 is no longer aligned with the jack, and the outer pull plate 96 can be supported and limited by the support block 97, thereby preventing the right trapezoidal block 94 from rebounding. Without the limiting effect of the right trapezoidal block 94, the operator can directly remove the sleeve 7 from the surface of the gun head 5 to complete the removal of the sleeve 7. During subsequent installation, just put the sleeve 7 on the surface of the gun head 5 again, then rotate the outer pull plate 96 and release the outer pull plate 96, so that the spring 93 pushes the rectangular push plate 92 back, causing the end of the right trapezoidal block 94 to be stuck in the card slot 51, and the sleeve 7 can be stuck on the surface of the gun head 5 again to complete the installation of the sleeve 7, effectively improving the convenience of disassembly and assembly of the sleeve 7 and facilitating the operator to maintain the water gun.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure fine water mist spray gun with rapid switching, comprising a gun body, characterized in that: A gun head (5) is provided at the top end of the gun body. A spray head (6) is installed at the end of the gun head (5). A sleeve (7) is snap-fitted on the surface of the gun head (5), and the spray head (6) is clamped between the gun head (5) and the sleeve (7). A water inlet communicating with the inside of the gun body is provided at the bottom end of the gun body. A three-way conversion ball valve (1) is arranged inside the gun body. An annular hole (12) and a plurality of axial through holes (13) are formed inside the gun head (5). The end of the axial through hole (13) communicates with the annular hole (12). A pipe fitting (3) is provided at the top of the gun body. One end of the pipe fitting (3) penetrates to the inside of the annular hole (12), and the other end of the pipe fitting (3) penetrates into the gun body and is connected to the three-way conversion ball valve (1). A conversion switch (2) connected to the three-way conversion ball valve (1) is installed on the surface of the gun body. A mandrel (4) is installed inside the top end of the gun body, and the gun head (5) is sleeved on the mandrel (4). A direct current hole is formed at the center of the spray head (6). A plurality of axial through holes (13) are evenly formed on the surface of the spray head (6) relative to the outside of the direct current hole. A clamping mechanism (9) is arranged between the sleeve (7) and the gun head (5). The clamping mechanism (9) includes two rectangular grooves (91). The two rectangular grooves (91) are symmetrically formed inside the sleeve (7). A rectangular push plate (92), a spring (93), a right-angled trapezoidal clamping block (94), a pull rod (95) and an outer pull plate (96) are arranged inside the rectangular groove (91). The top end of the pull rod (95) is fixed to the rectangular push plate (92). The spring (93) is sleeved on the pull rod (95). The right-angled trapezoidal clamping block (94) is fixed on one side surface of the rectangular push plate (92). The outer pull plate (96) is arranged outside the sleeve (7), and the bottom end of the pull rod (95) penetrates to the outside of the sleeve (7) and is rotatably connected to the outer pull plate (96). A clamping groove (51) corresponding to the right-angled trapezoidal clamping block (94) is formed on the surface of the gun head (5). The top end of the right-angled trapezoidal clamping block (94) penetrates to the inside of the clamping groove (51). A rotating rod with a T-shaped cross section is fixed to the bottom end of the pull rod (95). The outer pull plate (96) is sleeved on the rotating rod. An arc-shaped pull handle is fixed on one side surface of the outer pull plate (96). Two support blocks (97) are symmetrically fixed on the other side surface of the outer pull plate (96) relative to both sides of the pull rod (95). Two jacks corresponding to the support blocks (97) are symmetrically formed on the surface of the sleeve (7). The end of the support block (97) penetrates into the rectangular groove (91) through the jack. A rod hole corresponding to the pull rod (95) is formed at the bottom end of the rectangular groove (91), and the rod hole communicates with the outer surface of the sleeve (7). Two second O-ring seals (10) are arranged between the gun head (5) and the mandrel (4), and the annular hole (12) is located between the two second O-ring seals (10). Two first O-ring seals (8) are arranged between the spray head (6) and the gun head (5).The axial through hole (13) is located between two first O-ring seals (8). A grip (11) is provided at the bottom of the gun body, and an anti-slip pad is mounted on the surface of the grip (11).

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