Quick-open type low-expansion foam generator

Abstract

A connecting pipe is arranged on one side of the bottom end of a foaming body, a top cover is arranged at the top end of the foaming body, a sealing opening is formed in the top end of the connecting pipe, a connecting shaft seat is arranged on the outer wall, located on one side of the top cover, of the foaming body, the connecting shaft seat is movably connected with a fastening rod, and the outer wall of the upper end of the fastening rod is in threaded connection with an internal thread knob. A limiting base is fixedly connected to the position, located on one side of the foaming body, of the middle of the top cover through a screw, and when foaming liquid enters the foaming body through a connecting pipe, the sealing gasket can be pushed upwards under the liquid pressure, so that the liquid conveniently flows into the foaming body; and the pressure in the piston groove is controlled to be matched with the first spring to generate a certain damping effect, so that the sealing gasket can be effectively prevented from rapidly descending to impact a sealing opening, and repeated use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of foam generators, in particular to a fast-opening low-multiple foam generator. Background Art

[0002] The foam generator is a fire-fighting device fixedly installed on the oil tank for generating and spraying air foam. When the foam mixture flows through the generator nozzle, a diffuse atomized jet is formed, and negative pressure is generated around it, thereby inhaling a large amount of air to form a foam liquid mixed with air. The foam liquid reaches the sealed glass plate through the foam nozzle. When the pressure reaches a certain value, the sealed glass plate breaks, and the foam liquid flows into the sleeve and enters the oil tank through the outlet connecting pipe, and the foam liquid is evenly covered on the surface of the burning liquid.

[0003] The existing foam generator, after use, not only needs to replace the sealing glass again, but also needs to use two wrenches simultaneously to tighten or loosen the top cover on the foam generator because the top cover is fixed to the foam body by bolts. Otherwise, if only one wrench is used, the screw and the nut will rotate in the same direction, which is very troublesome. Utility Model Content

[0004] The technical solution adopted by the utility model to solve the technical problem is: a quick-opening low-multiple foam generator, which comprises: a foam body, a connecting tube is arranged on one side of the bottom end of the foam body, a top cover is arranged on the top end of the foam body, a sealing port is arranged on the top end of the connecting tube, a coupling seat is arranged on the outer wall of the foam body located on one side of the top cover, a fastening rod is movably connected to the coupling seat, an internally threaded knob is threadedly connected to the outer wall of the upper end of the fastening rod, a limit seat is screwed and fixedly connected to the middle part of the top cover located on one side of the foam body, a piston groove is arranged inside the limit seat, a piston body is slidably connected to the inner wall of the piston groove, a movable rod is fixedly connected to the bottom end of the movable rod, a sealing disk is fixedly connected to the bottom end of the sealing disk.

[0005] As a preferred technical solution of the utility model, the sealing disc and the sealing gasket are directly opposite to the sealing port, and the sealing gasket matches the sealing port.

[0006] As a preferred technical solution of the utility model, the limit seat is provided with a vent hole on one side of the sealing disk, a plurality of vent holes are provided, and the vent holes are communicated with the piston groove.

[0007] As a preferred technical solution of the utility model, a first spring is arranged on the side of the piston groove that is close to the upper end of the piston body, a through hole is opened on the side of the limit seat close to the top cover, and an exhaust port is opened on the upper end of the limit seat opposite to the through hole.

[0008] As an optimal technical solution of the utility model, the limit seat is located on the inner wall of one side of the exhaust port and is slidably connected to a sliding rod, the outer wall of the sliding rod is sleeved with a second spring, the limit seat is located on one side of the sliding rod and is provided with a hollow opening, the sliding rod is located at one end of the exhaust port and is fixedly connected to a sealing plug, the diameter of the sealing plug is larger than the exhaust port, and the limit seat is located on one side of the second spring and the sealing plug and is provided with a hollow groove.

[0009] As a preferred technical solution of the utility model, a bayonet is provided on the side of the top cover facing the fastening rod, a plurality of fastening rods are provided, an air inlet is provided on the lower end of the connecting tube, an outlet is provided on one side of the foam body, and a sealing ring is provided between the top cover and the foam body.

[0010] As a preferred technical solution of the utility model, the outer wall of the movable rod is fixedly connected to a limit strip, the limit strip is slidably connected to the inside of the limit seat, and the piston groove is connected to the air vent, the through hole, and the exhaust port.

[0011] The utility model has the following advantages: the top cover can be removed from the top of the foam body by manually twisting the internal thread knob and pulling the fastening rod out of the bayonet, and the top cover can be installed in the same way, so that the top cover can be easily disassembled and assembled;

[0012] When the foaming liquid enters the foam body through the connecting tube, the sealing gasket will be pushed upwards under the liquid pressure, thereby facilitating the liquid to flow into the foam body. When the liquid pressure is stopped, a certain damping effect is produced by controlling the pressure inside the piston groove in cooperation with the first spring, thereby effectively preventing the sealing gasket from falling rapidly and causing impact on the sealing port, thereby facilitating repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of a preferred embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the top cover of the preferred embodiment of the utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the top cover and the limit seat of the preferred embodiment of the utility model;

[0017] Figure 5 It is the preferred embodiment of the utility model Figure 4 Schematic diagram of structure A.

[0018] Explanation of the reference numerals in the accompanying drawings: 1. foam body; 2. connecting pipe; 201. sealing port; 202. air inlet; 3. top cover; 301. bayonet; 4. coupling seat; 5. tightening rod; 6. internal thread knob; 7. limit seat; 701. piston groove; 702. piston body; 703. movable rod; 7031. limit strip; 704. sealing disk; 7041. sealing gasket; 705. air vent; 706. first spring; 707. through hole; 708. exhaust port; 709. sliding rod; 710. second spring; 711. hollow port; 712. sealing plug; 713. hollow groove; 8. outlet; 9. sealing ring. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] Please refer to Figure 1-Figure 5The utility model discloses a quick-opening low-multiple foam generator, comprising: a foam body 1, a connecting tube 2 is arranged on one side of the bottom end of the foam body 1, a top cover 3 is arranged on the top of the foam body 1, a sealing port 201 is arranged on the top of the connecting tube 2, a coupling seat 4 is arranged on the outer wall of the foam body 1 on one side of the top cover 3, a fastening rod 5 is movably connected to the coupling seat 4, an inner threaded knob 6 is threadedly connected to the outer wall of the upper end of the fastening rod 5, a limiting seat 7 is screwed and connected to the middle part of the top cover 3 on one side of the foam body 1, a piston groove 701 is arranged inside the limiting seat 7, a piston body 702 is slidably connected to the inner wall of the piston groove 701, a movable rod 703 is fixedly connected to the bottom end of the piston body 702, a sealing disk 704 is fixedly connected to the bottom end of the movable rod 703, and a sealing pad 7041 is arranged at the bottom end of the sealing disk 704.

[0023] Combination Figure 4 and Figure 5 As shown, the sealing disk 704 and the sealing gasket 7041 are directly opposite to the sealing port 201, and the sealing gasket 7041 is matched with the sealing port 201, so that the sealing port 201 is sealed by the sealing gasket 7041, and the limiting seat 7 is located on one side of the sealing disk 704 and is provided with an air hole 705, through which the gas under the piston body 702 can flow freely, and there are several air holes 705, which are connected with the piston groove 701, and the piston groove 701 is close to the upper end of the piston body 702. A first spring 706 is provided on the side, through which the piston body 702 is pushed down, and a through hole 707 is provided on the side of the limiting seat 7 close to the top cover 3, and an exhaust port 708 is provided on the upper end of the limiting seat 7 opposite to the through hole 707, and the inner diameter of the through hole 707 is much smaller than the inner diameter of the exhaust port 708.

[0024] Among them, the limiting seat 7 is located on the inner wall of the exhaust port 708 and is slidably connected to a slide rod 709, which facilitates the guidance of the sealing plug 712 through the slide rod 709, and the outer wall of the slide rod 709 is sleeved with a second spring 710, and the limiting seat 7 is located on one side of the slide rod 709 and is provided with a hollow opening 711, and the slide rod 709 is located at one end of the exhaust port 708 and is fixedly connected to the sealing plug 712, and the diameter of the sealing plug 712 is larger than the exhaust port 708, and the limiting seat 7 is located on the second spring 710 and the sealing plug 712. A hollow groove 713 is opened on the side, and the top cover 3 is tightly against it. A bayonet 301 is provided on one side of the fixing rod 5, which facilitates the clamping of the fastening rod 5 and can be fastened by the internal threaded knob 6. There are several fastening rods 5. An air inlet 202 is provided on one side of the lower end of the connecting tube 2, an outlet 8 is provided on one side of the foam body 1, and a sealing ring 9 is provided between the top cover 3 and the foam body 1. The outer wall of the movable rod 703 is fixedly connected to the limit strip 7031, and the limit strip 7031 is slidably connected to the inside of the limit seat 7. The piston groove 701 is connected to the air vent 705, the through hole 707, and the exhaust port 708.

[0025] Specifically, according to the utility model, when disassembling and assembling the top cover 3 on the top of the foam body 1, it is only necessary to manually twist the internal threaded knob 6 and then pull the fastening rod 5 out of the bayonet 301, so that the top cover 3 can be removed from the top of the foam body 1, and the top cover 3 can be installed in the same way. When in use, when the foaming liquid enters the foam body 1 through the connecting tube 2, the sealing gasket 7041 will be pushed upward under the liquid pressure, so that the sealing gasket 7041 together with the sealing disk 704 and the movable rod 703 move upward, and then the movable rod 703 together with the piston body 702 move upward, and then the piston body 702 compresses the first spring 706 and the gas inside the piston groove 701 upward, so that a part of the gas in the piston groove 701 above the piston body 702 is discharged from the through hole 707, and the other part of the compressed gas enters the exhaust port. The piston groove 701 is in the opening 708 and pushes the sealing plug 712, so that the gas in the piston groove 701 can be quickly discharged, thereby ensuring that the sealing gasket 7041 moves upward quickly under the liquid pressure and separates from the sealing port 201. When the liquid pressure stops, the piston body 702 is pushed under the elastic force of the first spring 706, so that the sealing gasket 7041 is sealed at the sealing port 201, so that it can be recycled. When the piston body 702 descends, the interior of the piston groove 701 above the piston body 702 is in a negative pressure state, and the gas can only enter from the through hole 707. At this time, the exhaust port 708 is sealed by the second spring 710 and the sealing plug 712, which can effectively slow down the descending speed of the sealing gasket 7041, thereby avoiding the rapid descent of the sealing gasket 7041 and the impact of the sealing port 201.

[0026] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0027] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. Quick-opening low-multiplicity foam generator, including: A foam body (1), characterized in that a connecting tube (2) is provided on one side of the bottom end of the foam body (1), a top cover (3) is provided on the top end of the foam body (1), a sealing port (201) is provided on the top end of the connecting tube (2), a coupling seat (4) is provided on the outer wall of the foam body (1) on one side of the top cover (3), the coupling seat (4) is movably connected to a fastening rod (5), an inner threaded knob (6) is threadedly connected to the outer wall of the upper end of the fastening rod (5), and the top cover ( 3) A limit seat (7) is screw-fixedly connected to one side of the foam body (1) in the middle, a piston groove (701) is provided inside the limit seat (7), a piston body (702) is slidably connected to the inner wall of the piston groove (701), a movable rod (703) is fixedly connected to the bottom end of the piston body (702), a sealing disk (704) is fixedly connected to the bottom end of the movable rod (703), and a sealing gasket (7041) is provided at the bottom end of the sealing disk (704).

2. The fast-opening low-multiplicity foam generator according to claim 1, characterized in that: The sealing disc (704) and the sealing gasket (7041) are directly opposite to the sealing opening (201), and the sealing gasket (7041) matches the sealing opening (201).

3. The fast-opening low-multiplicity foam generator according to claim 1, characterized in that: The limiting seat (7) is provided with a vent hole (705) on one side of the sealing disk (704), and a plurality of vent holes (705) are provided. The vent holes (705) are communicated with the piston groove (701).

4. The fast-opening low-multiplicity foam generator according to claim 1, characterized in that: A first spring (706) is provided on one side of the piston groove (701) that is in contact with the upper end of the piston body (702); a through hole (707) is provided on the side of the limit seat (7) close to the top cover (3); and an exhaust port (708) is provided on the upper end of the limit seat (7) opposite to the through hole (707).

5. The fast-opening low-multiplicity foam generator according to claim 1, characterized in that: The inner wall of the limit seat (7) located on one side of the exhaust port (708) is slidably connected to a slide rod (709), and the outer wall of the slide rod (709) is sleeved with a second spring (710). The limit seat (7) is located on one side of the slide rod (709) and is provided with a hollow opening (711). The slide rod (709) is located at one end of the exhaust port (708) and is fixedly connected to a sealing plug (712). The diameter of the sealing plug (712) is larger than that of the exhaust port (708). The limit seat (7) is located on one side of the second spring (710) and the sealing plug (712) and is provided with a hollow groove (713).

6. The fast-opening low-multiplicity foam generator according to claim 1, characterized in that: The top cover (3) is provided with a bayonet (301) on one side facing the fastening rod (5), the fastening rods (5) are provided in a plurality, an air inlet (202) is provided on one side of the lower end of the connecting pipe (2), an outlet (8) is provided on one side of the foam body (1), and a sealing ring (9) is provided between the top cover (3) and the foam body (1).

7. The fast-opening low-multiplicity foam generator according to claim 1, characterized in that: The outer wall of the movable rod (703) is fixedly connected to a limit strip (7031), and the limit strip (7031) is slidably connected to the inside of the limit seat (7). The piston groove (701) is connected to the air vent (705), the through hole (707), and the exhaust port (708).

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