Telescopic high-pressure water mist nozzle

Abstract

The telescopic high-pressure water mist spray head comprises a first shell, a second shell is installed above the first shell, a connecting opening is formed in one side of the first shell, a connecting ring is installed on the side, close to the first shell, of the connecting opening, the connecting ring is located in the first shell, and a connecting pipe is installed on the side, away from the connecting opening, of the connecting ring; a telescopic spring is installed on the periphery of the connecting pipe, a clamping device is installed at the other end of the connecting pipe, and the telescopic spring is located between the connecting port and the clamping device. The clamping device is arranged in the first shell, the spray head can be replaced when needing to be replaced, and the clamping device is convenient to operate and high in practicability. The nozzle connecting pipe is clamped or released by rotating the handle in the positive and negative directions, so that the nozzle is convenient to replace.

Description

Technical Field

[0001] The invention relates to the technical field of fire fighting equipment, in particular to a telescopic high-pressure fine water mist nozzle. Background Art

[0002] Among the existing fire-fighting equipment, high-pressure fine water mist nozzles are often used. The fine droplets formed by pressurized water flowing through special high-pressure fine water mist nozzles are used for fire extinguishing. The average diameter of the fine water mist droplets is less than 100μm, and the specific surface area and distribution density are high. They vaporize rapidly when encountering the high temperature of the flame, and their volume can expand by more than 1,700 times, greatly reducing the oxygen concentration in the protected area. It has a strong vaporization cooling effect and oxygen isolation and suffocation effect, and is widely used in fire extinguishing in flammable and explosive places such as archives, turbine rooms, and computer rooms.

[0003] The invention with publication number CN115382141A provides a telescopic high-pressure fine water mist nozzle, including an external joint, a telescopic main body, a fire nozzle, and a first spring. A main body cavity is arranged in the telescopic main body, a first thread is arranged at one end of the external joint, and the other end of the external joint is fixedly connected to the inner wall of one end of the main body cavity. The fire nozzle is arranged in the main body cavity, and the first spring is arranged outside the fire nozzle. In the present invention, due to the adoption of an automatic telescopic design, when the spray gun is turned on, the fire nozzle is subjected to pressure shock, and the fire nozzle automatically extends out of the telescopic main body, the first spring itself is compressed, and after the spray gun stops spraying, the first spring uses its own elastic force to rebound to the main body cavity, thereby avoiding the problem that the existing fire nozzle is exposed to the outside and the nozzle hole is easily clogged by dust over time.

[0004] This invention sets the nozzle body inside the telescopic body, which restricts the nozzle. Under special circumstances, the nozzle cannot be replaced. In addition, the spraying area of ​​the nozzle in this invention is not enough to cope with a large spraying area, which is time-consuming and labor-intensive. Summary of the invention

[0005] The object of the present invention is to provide a telescopic high-pressure fine water mist nozzle to solve the problems proposed in the above-mentioned background technology that the nozzle body is arranged inside the telescopic body, which limits the nozzle and cannot be replaced under special circumstances. In addition, the spraying area of ​​the nozzle in the invention is not enough to cope with a large area of ​​spraying, which is time-consuming and labor-intensive.

[0006] To achieve the above object, the present invention provides the following technical solution: a telescopic high-pressure fine water mist nozzle, comprising a first shell, a second shell is installed above the first shell, a connecting port is provided on one side of the first shell, a connecting ring is installed on the side of the connecting port close to the first shell, the connecting ring is located inside the first shell, and a connecting pipe is installed on the side away from the connecting port, a telescopic spring is installed on the periphery of the connecting pipe, a clamping device is installed on the other end of the connecting pipe, and the telescopic spring is located between the connecting port and the clamping device;

[0007] The clamping device comprises a clamping seat mounted on the connecting pipe, a plurality of clamping strips are slidably mounted on the clamping seat, and a ball is rollingly mounted on one end of the plurality of clamping strips close to the axis of the clamping seat, a first gear is arranged at one end of the clamping seat close to the clamping strip, a plurality of arc grooves are opened in the first gear, a plurality of connecting shafts are arranged in the plurality of arc grooves, one end of the plurality of connecting shafts is respectively connected to the plurality of clamping strips, and the other end extends out of the arc groove, and a second gear is meshed above the first gear, and the second gear is located in the second housing, and A rotating shaft is installed at the center position of the second gear, and a handle is installed at the end of the rotating shaft away from the second gear. A connecting block is provided on the side of the second gear away from the handle, and a supporting ring is installed below the connecting block. The supporting ring is located in the first shell and on the side of the first gear away from the clamping seat. A nozzle pipe is slidably installed between several of the clamping bars, and a nozzle is installed on the side of the nozzle pipe away from the support ring. A water flow cavity is opened inside the nozzle, and several arc-shaped cavities are connected to the wall of the water flow cavity, and the other end of the arc-shaped cavity passes through the nozzle.

[0008] Preferably, a plurality of grooves are formed at one end of the clamping seat close to the clamping strip, and the number and positions of the grooves correspond to the number and positions of the clamping strips.

[0009] Preferably, a plurality of slide bars are installed on the periphery of the clamping seat, and a plurality of slide grooves are provided on the inner wall of the first shell, and the slide grooves are adapted to the slide bars.

[0010] Preferably, a ball groove is formed at one end of each of the plurality of clamping strips close to the axis of the clamping seat, the center of the ball groove is located inside the clamping strip, and the size of the ball groove is adapted to the ball.

[0011] Preferably, a first annular groove is provided on the side of the first gear away from the clamping seat, and the cross-section of the first annular groove is circular. A plurality of first sliding shafts are installed on the side of the support ring adjacent to the first gear, and a ball is installed on the end of the first sliding shaft close to the first gear, and the end of the first sliding shaft equipped with the ball is adapted in the first annular groove.

[0012] Preferably, a second annular groove is provided on a side of the second gear close to the connecting block, and the cross-section of the second annular groove is circular. A plurality of second sliding shafts are installed on a side of the connecting block adjacent to the second gear, and a ball is installed on one end of the second sliding shaft close to the second gear, and the end of the second sliding shaft equipped with the ball fits in the second annular groove.

[0013] Preferably, a circular groove is formed on a side of the second shell close to the handle, and the diameter of the circular groove is larger than the diameter of the handle.

[0014] Preferably, a limiting ring is installed on the side of the nozzle connecting pipe close to the clamping strip, the limiting ring is located on the side of the clamping strip close to the connecting pipe, and the diameter of the limiting ring is greater than the radius of the nozzle connecting pipe.

[0015] Preferably, an interception ring is installed on a side of the first shell close to the nozzle, and the inner diameter of the interception ring is smaller than the inner diameter of the first shell.

[0016] Preferably, a limit bar is installed on the inner wall of the top of the second shell, and the limit bar is matched with the tooth groove at the top of the second gear.

[0017] The beneficial effects of the present invention are:

[0018] In the present invention, a clamping device is arranged in the first shell, so that the nozzle can be replaced when the nozzle needs to be replaced, and the clamping device is easy to operate. The nozzle pipe can be clamped or released by rotating the handle in forward and reverse directions, thereby facilitating the replacement of the nozzle.

[0019] In the present invention, a telescopic spring is arranged between the connecting port and the clamping device, so that after the water flow is connected, the nozzle extends out of the first shell under the impact of the water flow, and after the water flow stops, the telescopic spring retracts and drives the nozzle back to the inside of the first shell, thereby realizing the telescopic movement of the nozzle, and the operation is simple and easy.

[0020] In the present invention, through the cooperation of a plurality of balls and clamping strips, the telescopic high-pressure fine water mist nozzle is clamped between a plurality of clamping strips, and after being connected to the water flow, the nozzle can be rotated, thereby achieving the purpose of expanding the water mist spraying area. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a telescopic high-pressure fine water mist nozzle proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the water outlet structure of a telescopic high-pressure fine water mist nozzle proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the water inlet structure of a telescopic high-pressure fine water mist nozzle proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the front cross-sectional structure of a telescopic high-pressure fine water mist nozzle proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the first gear structure of a telescopic high-pressure fine water mist nozzle proposed by the present invention;

[0026] Figure 6 A schematic diagram of the structure of a clamping strip of a telescopic high-pressure fine water mist nozzle proposed by the present invention;

[0027] Figure 7 The present invention provides a schematic diagram of the cross-sectional structure of a telescopic high-pressure water mist nozzle.

[0028] In the figure: 1. first shell; 2. second shell; 3. connecting port; 4. connecting ring; 5. connecting pipe; 6. telescopic spring; 7. clamping device; 701. clamping seat; 702. clamping strip; 703. groove; 704. ball; 705. ball groove; 706. slide bar; 707. slide groove; 708. first gear; 709. arc groove; 710. connecting shaft; 711. first annular groove; 712. supporting ring; 713. first sliding shaft; 714. second gear; 715. rotating shaft; 716. handle; 717. circular groove; 718. nozzle pipe; 719. nozzle; 720. water flow cavity; 721. arc cavity; 722. limiting ring; 723. connecting block; 724. second annular groove; 725. second sliding shaft; 726. intercepting ring; 727. limiting strip. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-7 A telescopic high-pressure fine water mist nozzle comprises a first shell 1, a second shell 2 is installed above the first shell 1, a connection port 3 is arranged on one side of the first shell 1, a connection ring 4 is installed on the side of the connection port 3 close to the first shell 1, the connection ring 4 is located inside the first shell 1, and a connection pipe 5 is installed on the side away from the connection port 3, a telescopic spring 6 is installed on the periphery of the connection pipe 5, a clamping device 7 is installed on the other end of the connection pipe 5, and the telescopic spring 6 is located between the connection port 3 and the clamping device 7;

[0031] The clamping device 7 includes a clamping seat 701 installed on the connecting pipe 5, and a plurality of clamping strips 702 are slidably installed on the clamping seat 701. The ends of the plurality of clamping strips 702 close to the axis of the clamping seat 701 are all rollingly installed with balls 704. A first gear 708 is provided at one end of the clamping seat 701 close to the clamping strip 702. A plurality of arc grooves 709 are provided in the first gear 708. A plurality of connecting shafts 710 are provided in the plurality of arc grooves 709. One end of the plurality of connecting shafts 710 is respectively connected to the plurality of clamping strips 702, and the other end extends out of the arc groove 709. A second gear 714 is meshed above the first gear 708. The second gear 714 is located in the second housing 2, and the second gear 714 is meshed with the second gear 714. 4 is provided with a rotating shaft 715 at the center position, a handle 716 is provided at one end of the rotating shaft 715 away from the second gear 714, a connecting block 723 is provided at the side of the second gear 714 away from the handle 716, a supporting ring 712 is provided below the connecting block 723, the supporting ring 712 is located in the first housing 1 and at the side of the first gear 708 away from the clamping seat 701, a nozzle pipe 718 is slidably installed between the plurality of clamping bars 702, a nozzle 719 is provided at the side of the nozzle pipe 718 away from the support ring 712, a water flow cavity 720 is provided inside the nozzle 719, a plurality of arc-shaped cavities 721 are connected to the wall surface of the water flow cavity 720, and the other end of the arc-shaped cavity 721 passes through the nozzle 719.

[0032] When using the telescopic high-pressure fine water mist nozzle, first turn the handle 716 to rotate the second gear 714, thereby driving the first gear 708 meshing with the second gear 714 to rotate, so that the distance between the plurality of clamping strips 702 connected to the first gear 708 through the connecting shaft 710 is expanded, and then the nozzle pipe 718 with the nozzle 719 installed is placed between the plurality of clamping strips 702, and then the handle 716 is rotated in the opposite direction to rotate the first gear 708 in the opposite direction, driving the plurality of clamping strips 702 to shrink toward the axis, until the ball 704 rotatably installed at one end of the gear strip can firmly clamp the nozzle pipe 718, and then the handle 716 is stopped from rotating in the opposite direction, thereby achieving the purpose of replacing the nozzle 719;

[0033] When the telescopic high-pressure fine water mist nozzle is used, the nozzle 719 needs to be extended out of the first housing 1. First, water flow is connected through the connection port 3. Under the impact of the water flow, the nozzle 719 is pushed out of the first housing 1. When the use is finished, the water flow is turned off. Under the action of the lifting and shrinking spring 6, the nozzle 719 automatically retracts into the first housing 1.

[0034] After the water flows into the nozzle 719, it will pass through the water flow cavity 720 in the nozzle 719 and enter several arc-shaped cavities 721 connected to the water flow cavity 720. Because the arc-shaped cavity 721 is arc-shaped and distributed along the circumference of the water flow cavity 720, the water will generate thrust in several directions after entering, pushing the nozzle 719 to rotate, and the ball 704 is installed at the end of the clamping strip 702 close to the axis, so that the nozzle 719 can be clamped while realizing axial rotation, thereby achieving the purpose of rotating the nozzle 719 to expand the water mist spraying area.

[0035] Reference Figure 6 In this embodiment, a plurality of grooves 703 are provided at one end of the clamping seat 701 close to the clamping strip 702, and the number and positions of the grooves 703 correspond to the number and positions of the clamping strips 702, so that the clamping strips 702 can slide on the clamping seat 701 through the arrangement of the grooves 703.

[0036] Reference Figure 6 In this embodiment, a plurality of slide bars 706 are installed on the periphery of the clamping seat 701, and a plurality of slide grooves 707 are opened on the inner wall of the first shell 1. The slide grooves 707 are adapted to the slide bars 706. The slide bars 706 provide support force for the clamping seat 701, so that the clamping seat 701 can be firmly placed inside the first shell 1. At the same time, the setting of the slide grooves 707 facilitates the slide bars 706 to slide inside the first shell 1.

[0037] Reference Figure 6 In this embodiment, a ball groove 705 is formed at one end of several clamping bars 702 close to the axis of the clamping seat 701. The center of the ball groove 705 is located inside the clamping bar 702, and the size of the ball groove 705 is adapted to the ball 704, so that the ball 704 can be rolled and installed on the clamping bar 702 through the ball groove 705.

[0038] Reference Figure 4-6 In this embodiment, a first annular groove 711 is provided on a side of the first gear 708 away from the clamping seat 701, and the cross-section of the first annular groove 711 is circular. A plurality of first sliding shafts 713 are installed on the side of the support ring 712 adjacent to the first gear 708. A ball is installed at one end of the first sliding shaft 713 close to the first gear 708, and one end of the first sliding shaft 713 equipped with the ball is adapted in the first annular groove 711, so that the support ring 712 can provide support force for the first gear 708 through the adaptability of the first annular groove 711 and the first sliding shaft 713, thereby ensuring the smooth operation of the first gear 708.

[0039] Reference Figure 4-5In this embodiment, a second annular groove 724 is provided on the side of the second gear 714 close to the connecting block 723, and the cross-section of the second annular groove 724 is circular. A plurality of second sliding shafts 725 are installed on the side of the connecting block 723 adjacent to the second gear 714. A ball is installed on the end of the second sliding shaft 725 close to the second gear 714, and the end of the second sliding shaft 725 equipped with the ball is adapted in the second annular groove 724, so that the connecting block 723 can provide support force for the second gear 714 through the adaptability of the second annular groove 724 and the second sliding shaft 725, thereby ensuring the smooth operation of the second gear 714.

[0040] Reference Figure 3 In this embodiment, a circular groove 717 is provided on one side of the second shell 2 close to the handle 716 , and the diameter of the circular groove 717 is larger than the diameter of the handle 716 , so that under the impact force of the water flow, the handle 716 can enter the interior of the second shell 2 through the circular groove 717 .

[0041] Reference Figure 4 In this embodiment, a limiting ring 722 is installed on the side of the nozzle connecting pipe 718 close to the clamping strip 702. The limiting ring 722 is located on the side of the clamping strip 702 close to the connecting pipe 5, and the diameter of the limiting ring 722 is larger than the radius of the nozzle connecting pipe 718. When the clamping strip 702 is clamped, the limiting ring 722 will be stuck on the side of the clamping strip 702 away from the nozzle 719, thereby preventing the nozzle connecting pipe 718 from being washed away by the water flow.

[0042] Reference Figure 4 In this embodiment, an interception ring 726 is installed on the side of the first shell 1 close to the nozzle 719. The inner diameter of the interception ring 726 is smaller than the inner diameter of the first shell 1. The setting of the interception ring 726 can intercept the support ring 712 to prevent the support ring 712 from being washed out of the first shell 1 by the water flow under the impact of the water flow.

[0043] Reference Figure 4 , Figure 6 In this embodiment, a limit strip 727 is installed on the inner wall at the top of the second shell 2, and the limit strip 727 is matched with the tooth groove at the top of the second gear 714, so that when the water flow is connected, the limit strip 727 is stuck in the tooth groove of the second gear 714, locking the second gear 714, thereby preventing several clamping strips 702 from spreading around under the centrifugal force generated by the rotation of the nozzle 719, causing the nozzle pipe 718 to be out of the clamping state and the nozzle 719 to fall out.

[0044] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A telescopic high-pressure water mist nozzle, comprising a first housing (1), characterized in that: A second shell (2) is installed above the first shell (1); a connection port (3) is provided on one side of the first shell (1); a connection ring (4) is installed on the side of the connection port (3) close to the first shell (1); the connection ring (4) is located inside the first shell (1); and a connection pipe (5) is installed on the side of the connection ring (4) away from the connection port (3); a telescopic spring (6) is installed on the periphery of the connection pipe (5); a clamping device (7) is installed on the other end of the connection pipe (5); and the telescopic spring (6) is located between the connection port (3) and the clamping device (7); The clamping device (7) comprises a clamping seat (701) mounted on the connecting pipe (5), a plurality of clamping strips (702) being slidably mounted on the clamping seat (701), a plurality of clamping strips (702) being rollingly mounted with balls (704) at one end of the clamping seat (701) close to the axis of the clamping seat (701), a first gear (708) being arranged at one end of the clamping seat (701) close to the clamping strip (702), a plurality of arc grooves (709) being arranged in the first gear (708), a plurality of connecting shafts (710) being arranged in the plurality of arc grooves (709), one end of the plurality of connecting shafts (710) being respectively connected to the plurality of clamping strips (702), and the other end extending out of the arc groove (709), and a second gear (714) being meshed above the first gear (708), the second gear (714) being located in the second housing (2), and the second gear (714) A rotating shaft (715) is installed at the center position of the first housing (1), a handle (716) is installed at one end of the rotating shaft (715) away from the second gear (714), a connecting block (723) is provided on the side of the second gear (714) away from the handle (716), a supporting ring (712) is installed below the connecting block (723), the supporting ring (712) is located in the first housing (1), and is located on the side of the first gear (708) away from the clamping seat (701), a nozzle pipe (718) is slidably installed between a plurality of the clamping strips (702), a nozzle (719) is installed on the side of the nozzle pipe (718) away from the supporting ring (712), a water flow cavity (720) is provided inside the nozzle (719), a plurality of arc-shaped cavities (721) are connected to the wall surface of the water flow cavity (720), and the other end of the arc-shaped cavity (721) passes through the nozzle (719).

2. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: A plurality of grooves (703) are formed at one end of the clamping seat (701) close to the clamping strip (702), and the number and positions of the grooves (703) correspond to the number and positions of the clamping strips (702).

3. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: A plurality of slide bars (706) are installed on the periphery of the clamping seat (701), and a plurality of slide grooves (707) are provided on the inner wall of the first shell (1), and the slide grooves (707) are adapted to the slide bars (706).

4. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: The ends of the plurality of clamping strips (702) close to the axis of the clamping seat (701) are each provided with a ball groove (705), the center of the ball groove (705) is located inside the clamping strip (702), and the size of the ball groove (705) is adapted to the ball (704).

5. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: A first annular groove (711) is provided on a side of the first gear (708) away from the clamping seat (701), and the cross-section of the first annular groove (711) is circular. A plurality of first sliding shafts (713) are installed on a side of the support ring (712) adjacent to the first gear (708), and a ball is installed on one end of the first sliding shaft (713) close to the first gear (708), and the end of the first sliding shaft (713) equipped with the ball is adapted to fit in the first annular groove (711).

6. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: A second annular groove (724) is provided on a side of the second gear (714) close to the connecting block (723); the cross section of the second annular groove (724) is circular; a plurality of second sliding shafts (725) are installed on a side of the connecting block (723) adjacent to the second gear (714); a ball is installed on one end of the second sliding shaft (725) close to the second gear (714); and the end of the second sliding shaft (725) equipped with the ball fits in the second annular groove (724).

7. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: A circular groove (717) is provided on one side of the second shell (2) close to the handle (716), and the diameter of the circular groove (717) is greater than the diameter of the handle (716).

8. The telescopic high-pressure water mist nozzle according to claim 1, characterized in that: A limiting ring (722) is installed on the side of the nozzle connecting pipe (718) close to the clamping strip (702). The limiting ring (722) is located on the side of the clamping strip (702) close to the connecting pipe (5), and the diameter of the limiting ring (722) is greater than the radius of the nozzle connecting pipe (718).

9. A method according to claim 1, characterized in that: An interception ring (726) is installed on one side of the first shell (1) close to the nozzle (719); the inner diameter of the interception ring (726) is smaller than the inner diameter of the first shell (1).

10. A method according to claim 1, characterized in that: A limit strip (727) is installed on the inner wall at the top of the second housing (2), and the limit strip (727) is matched with the tooth groove at the top of the second gear (714).

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