Foam generator center pipe convenient to replace

Abstract

The utility model discloses a foam generator center pipe convenient to replace, which belongs to the technical field of foam generators and comprises a shell, a liquid inlet pipe is fixedly communicated with the bottom surface of the shell, a positioning table is fixedly connected with the outer surface of the liquid inlet pipe and arranged in the shell, two positioning holes are formed in the upper surface of the positioning table, and a liquid outlet pipe is arranged in the shell. A buffer rubber ring is fixedly connected to the upper surface of the positioning table, the inner wall of the buffer rubber ring makes contact with the outer surface of the liquid inlet pipe, a cover plate is arranged above the shell, a connecting cylinder is slidably connected into the cover plate, a plurality of bubble discharging openings are formed in the outer surface of the connecting cylinder, a connecting frame is arranged at the bottom end of the connecting cylinder, and the liquid inlet pipe is sleeved with the connecting frame. And the bottom surface of the connecting frame is in contact with the upper surface of the buffer rubber ring. According to the foam generator center pipe convenient to replace, when the glass center pipe is replaced, the whole foam generator does not need to be completely disassembled, and the disassembly, assembly and replacement convenience of the foam generator glass center pipe is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of foam generators, and particularly relates to a foam generator center pipe convenient to replace. BACKGROUND

[0002] The foam generator is a fire extinguishing equipment fixedly installed on an oil tank to generate and spray air foam to extinguish oil fires. The foam proportioning device of the foam generator utilizes a foam mixture supplied by a fixed fire pump to flow through a delivery pipeline to generate a certain pressure, and the foam formed by the contact with air can extinguish oil fires. The air foam generator mainly comprises a shell set, a foam spray pipe set, a glass center pipe and a guide plate set. When the foam mixture flows through the generator nozzle, a diffused atomized jet is formed, a negative pressure is generated around the diffused atomized jet to suck a large amount of air and contact with the air to form air foam. The air foam is input into the storage tank through the foam spray pipe and the guide plate, flows down along the tank wall and covers the burning liquid surface stably.

[0003] The utility model discloses a foam generator, including the generator body, the outside of generator body is provided with first flange plate, the back of first flange plate and the output end of generator body contact, and the inner wall of first flange plate and the inner wall of generator body are jointly screwed with two groups of first bolt.

[0004] The above technical scheme can conveniently install the filtering mechanism on the generator body. By providing the first filter screen, the second filter screen, the third filter screen and the connecting rod, different sizes of foam can be conveniently classified and filtered, and the situation that different sizes of foam are easily blocked is effectively prevented. However, the existing foam generator has the problem that when the glass center pipe is broken and needs to be replaced, the entire foam generator needs to be completely disassembled, which greatly affects the convenience of disassembling and replacing the glass center pipe of the foam generator.

[0005] Therefore, the foam generator center pipe convenient to replace is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The purpose of the present application is to solve the problem that when the glass center pipe is broken and needs to be replaced, the entire foam generator needs to be completely disassembled, which affects the convenience of disassembling and replacing the glass center pipe of the foam generator, and a foam generator center pipe convenient to replace is proposed.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a kind of foam generator central tube of easy replacement, including shell, the bottom surface of the shell is fixedly connected with liquid inlet pipe, the outer surface of the liquid inlet pipe is fixedly connected with positioning table, the positioning table is arranged in the inside of shell, the upper surface of the positioning table is equipped with two positioning holes, the upper surface of the positioning table is fixedly connected with buffer rubber ring, the inner wall of the buffer rubber ring is in contact with the outer surface of liquid inlet pipe, the upper of the shell is provided with cover plate, the inside of the cover plate is slidably connected with connecting cylinder, the outer surface of the connecting cylinder is equipped with a plurality of bubble discharge ports, the bottom of the connecting cylinder is provided with connecting frame, the connecting frame is sleeved on the outside of liquid inlet pipe, the bottom surface of the connecting frame is in contact with the upper surface of buffer rubber ring, the bottom surface of the connecting frame is fixedly connected with two positioning pins, two positioning pins are respectively clamped in the inside of two positioning holes, the inner wall of the connecting frame is fixedly connected with sealing glass, the sealing glass is arranged at the top of liquid inlet pipe, the inside of the connecting cylinder is threadedly connected with a plurality of disassembly bolts, the bottom of each disassembly bolt is penetrated to the inside of connecting frame, the upper surface of the connecting cylinder is fixedly connected with positioning block, the bottom surface of the positioning block is in contact with the upper surface of cover plate, the upper surface of the cover plate is fixedly connected with fixed block, the back of the fixed block is in contact with the front of positioning block, the inside of the fixed block and the inside of positioning block are threadedly connected with fastening bolt.

[0009] Preferably, the outer surface of the shell is fixedly connected with a discharge pipe, and the outer surface of the discharge pipe is fixedly connected with a mating flange.

[0010] Preferably, the outer surface of the liquid inlet pipe is provided with a plurality of air inlets, and the outer surface of the liquid inlet pipe is fixedly connected with two fixed rings.

[0011] Preferably, the outer surface of the liquid inlet pipe is fixedly connected with a mounting flange, and the upper surface of the mounting flange is provided with a plurality of mounting through holes.

[0012] Preferably, the outer surface of the liquid inlet pipe is fixedly connected with a reinforcing ring, and the bottom surface of the reinforcing ring is fixedly connected with the inner bottom wall of the shell.

[0013] Preferably, the outer surface of the connecting cylinder is sleeved with a sealing ring, and the upper surface of the sealing ring is fixedly connected with the bottom surface of the cover plate.

[0014] Preferably, the front of the fixed block is fixedly connected with two reinforcing ribs, and the bottom surface of each reinforcing rib is fixedly connected with the upper surface of the cover plate.

[0015] Preferably, the inner part of the cover plate is threaded with a plurality of fixing bolts, the bottom end of each fixing bolt penetrates into the inner part of the shell, and each fixing bolt is in threaded connection with the shell.

[0016] In summary, the technical effects and advantages of the present application are:

[0017] When the sealing glass is broken by water flow and needs to be replaced, only the fastening bolt is rotated out to release the limiting of the positioning block by the fixing block, at this time, the connecting cylinder is pulled out upward through the cover plate by the fixing block, when the connecting cylinder is pulled out upward, the connecting frame is driven to move upward, at this time, the connecting frame is detached from the connecting cylinder through the detachable bolt, then the new connecting frame with the sealing glass is fixed on the connecting cylinder through the detachable bolt, and the connecting cylinder is matched with the positioning pin and the positioning hole, so that the sealing glass covers the water outlet of the liquid inlet pipe again, the glass central pipe can be quickly disassembled and replaced, the foam generator does not need to be completely disassembled when the glass central pipe is replaced, and the convenience of disassembling and replacing the glass central pipe of the foam generator is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic view of the shell and the cover plate of the present application;

[0019] Figure 2 It is a three-dimensional structural schematic view of the shell of the present application;

[0020] Figure 3 It is a three-dimensional structural schematic view of the connecting cylinder of the present application;

[0021] Figure 4 It is a three-dimensional structural schematic view of the liquid inlet pipe of the present application.

[0022] In the figure: 1, shell; 2, liquid inlet pipe; 3, positioning table; 4, positioning hole; 5, buffer rubber ring; 6, cover plate; 7, connecting cylinder; 8, bubble discharge port; 9, connecting frame; 10, positioning pin; 11, sealing glass; 12, detachable bolt; 13, positioning block; 14, fixing block; 15, fastening bolt; 16, discharge pipe; 17, butt flange; 18, air inlet; 19, fixing ring; 20, air inlet cover; 21, air inlet hole; 22, mounting flange; 23, mounting through hole; 24, reinforcing ring; 25, sealing ring; 26, reinforcing rib; 27, fixing bolt. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0024] Reference Figures 1-4 A foam generator center tube convenient to replace, including shell 1, shell 1 bottom fixed communication has liquid inlet pipe 2, the outer surface of liquid inlet pipe 2 is fixedly connected with positioning table 3, the outer surface of shell 1 is fixedly connected with discharge pipe 16, the outer surface of discharge pipe 16 is fixedly connected with butt flange 17, discharge pipe 16 cooperates butt flange 17 and can be connected with tank, ensure that bubble can smoothly enter the tank and carry out fire extinguishing.

[0025] Positioning table 3 is arranged in the inside of shell 1, the upper surface of positioning table 3 is provided with two positioning holes 4, the outer surface of liquid inlet pipe 2 is provided with several air inlets 18, the outer surface of liquid inlet pipe 2 is fixedly connected with two fixed rings 19, the side face of two fixed rings 19 close to each other is fixedly connected with air inlet cover 20, air inlet cover 20 is arranged outside air inlet 18, the outer surface of air inlet cover 20 is provided with air inlet holes 21 arranged at equal distance, through air inlet 18 can ensure that the outside gas is contacted with foam mixture and produces foam, air inlet cover 20 cooperates air inlet hole 21 can isolate external impurities without affecting the gas through air inlet 18, and air inlet hole 21 is collectively provided with forty holes, and the diameter of the upper nineteen holes is thirteen point five millimeters, and the diameter of the lower twenty-one holes is twenty millimeters.

[0026] The upper surface of positioning table 3 is fixedly connected with buffer rubber ring 5, the inner wall of buffer rubber ring 5 is in contact with the outer surface of liquid inlet pipe 2, the upper portion of shell 1 is provided with cover plate 6, the outer surface of liquid inlet pipe 2 is fixedly connected with mounting flange 22, the upper surface of mounting flange 22 is provided with several mounting through holes 23, mounting flange 22 can make liquid inlet pipe 2 and foam mixture delivery pipeline be connected, so that foam mixture can smoothly enter the inside of mounting flange 22.

[0027] The inside of cover plate 6 is slidably connected with connecting cylinder 7, the outer surface of connecting cylinder 7 is provided with several bubble discharge holes 8, the bottom end of connecting cylinder 7 is provided with connecting frame 9, the outer surface of liquid inlet pipe 2 is fixedly connected with reinforcing ring 24, the bottom surface of reinforcing ring 24 is fixedly connected with the inner bottom wall of shell 1, reinforcing ring 24 can increase the connection firmness of liquid inlet pipe 2 and shell 1, so that the connection of liquid inlet pipe 2 and shell 1 is more closely and reliably.

[0028] Connecting frame 9 is arranged outside liquid inlet pipe 2, the bottom surface of connecting frame 9 is in contact with the upper surface of buffer rubber ring 5, the bottom surface of connecting frame 9 is fixedly connected with two positioning pins 10, two positioning pins 10 are respectively clamped in the inside of two positioning holes 4, the outer surface of connecting cylinder 7 is sleeved with sealing ring 25, the upper surface of sealing ring 25 is fixedly connected with the bottom surface of cover plate 6, sealing ring 25 can seal the gap between connecting cylinder 7 and cover plate 6, to prevent liquid from leaking through the gap.

[0029] The inner wall of the connecting frame 9 is fixedly connected with a sealing glass 11, the bottom surface of the sealing glass 11 is provided with cross marks, the sealing glass 11 can be broken when being impacted by water flow with a pressure of zero point one megapascal, the sealing glass 11 is arranged at the top end of the liquid inlet pipe 2, the inside of the connecting cylinder 7 is threadedly connected with a plurality of dismounting bolts 12, the bottom end of each dismounting bolt 12 penetrates into the inside of the connecting frame 9, the upper surface of the connecting cylinder 7 is fixedly connected with a positioning block 13, the bottom surface of the positioning block 13 is in contact with the upper surface of the cover plate 6, the upper surface of the cover plate 6 is fixedly connected with a fixed block 14, the front surface of the fixed block 14 is fixedly connected with two reinforcing ribs 26, the bottom surface of each reinforcing rib 26 is fixedly connected with the upper surface of the cover plate 6, the reinforcing rib 26 can increase the connection firmness of the fixed block 14 and the cover plate 6, so that the connection between the cover plate 6 and the fixed block 14 is more compact and reliable.

[0030] The back surface of the fixed block 14 is in contact with the front surface of the positioning block 13, the inside of the fixed block 14 and the inside of the positioning block 13 are commonly threadedly connected with a fastening bolt 15, the inside of the cover plate 6 is threadedly connected with a plurality of fixed bolts 27, the bottom end of each fixed bolt 27 penetrates into the inside of the shell 1, each fixed bolt 27 is threadedly connected with the shell 1, the fixed bolt 27 can fix the position of the cover plate 6 on the shell 1, so that the installation convenience and the use stability of the cover plate 6 are ensured.

[0031] The working principle of the utility model is: when using, first, the liquid inlet pipe 2 and the foam mixed liquid delivery pipeline are communicated through the installation flange 22, then the shell 1 and the oil tank foam input port are communicated through the discharge pipe 16 cooperating with the butt flange 17, when the oil tank is on fire, the foam mixed liquid with certain pressure will enter the liquid inlet pipe 2, the pressure of the foam mixed liquid when passing through the liquid inlet pipe 2 can form a negative pressure environment in the liquid inlet pipe 2, then the outside air is sucked into the liquid inlet pipe 2 through the air inlet hole 21 and the air inlet 18 on the air inlet cover 20, mixes with the foam mixed liquid to produce a large amount of bubbles, and the air inlet hole 21 with the upper part of nineteen holes with a diameter of thirteen point five millimeters and the lower part of twenty one holes with a diameter of twenty millimeters can ensure the concentration and uniformity of the water film forming fire extinguishing agent in the water, when the foam mixed liquid contacts the sealing glass 11, the cross-shaped scratch on the bottom of the sealing glass 11 and the pressure of the foam mixed liquid can break the sealing glass 11 so that the bubbles produced by the foam mixed liquid pass through the bubble discharge hole 8 and the shell 1 and enter the oil tank through the discharge pipe 16 to extinguish the fire, when the broken sealing glass 11 needs to be replaced, the fastening bolt 15 is unscrewed, the limiting of the positioning block 13 by the fixing block 14 is released, at this time, the connecting cylinder 7 is pulled out upward through the fixing block 14 and the cover plate 6, when the connecting cylinder 7 is pulled out upward, the connecting frame 9 can be moved upward, then the connecting frame 9 is detached from the connecting cylinder 7 through the detachable bolt 12, then the new connecting frame 9 with the sealing glass 11 is fixed on the connecting cylinder 7 through the detachable bolt 12, and the connecting cylinder 7 is cooperated with the positioning pin 10 and the positioning hole 4 so that the sealing glass 11 covers the water outlet of the liquid inlet pipe 2 again, until the bottom surface of the connecting frame 9 contacts the upper surface of the buffer rubber ring 5, the sealing glass 11 can be closed with the connecting frame 9 to keep a certain distance between the sealing glass 11 and the liquid inlet pipe 2, finally, the fastening bolt 15 is screwed and cooperated with the fixing block 14 to limit the position of the positioning block 13 again, at this time, the dismounting and replacement work of the glass central pipe can be quickly completed, the foam generator does not need to be completely disassembled when the glass central pipe is replaced, and the dismounting and replacement convenience of the foam generator glass central pipe is improved.

[0032] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as a limitation on the utility model that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0033] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0034] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A foam generator center tube for ease of replacement comprising a housing (1) characterised in that: The lower surface of the shell (1) is fixedly connected with a liquid inlet pipe (2), the outer surface of the liquid inlet pipe (2) is fixedly connected with a positioning table (3), the positioning table (3) is arranged in the shell (1), the upper surface of the positioning table (3) is provided with two positioning holes (4), the upper surface of the positioning table (3) is fixedly connected with a buffer rubber ring (5), the inner wall of the buffer rubber ring (5) is in contact with the outer surface of the liquid inlet pipe (2), the upper portion of the shell (1) is provided with a cover plate (6), the inner portion of the cover plate (6) is slidably connected with a connecting cylinder (7), the outer surface of the connecting cylinder (7) is provided with a plurality of bubble discharge openings (8), the bottom end of the connecting cylinder (7) is provided with a connecting frame (9), the connecting frame (9) is arranged on the outer portion of the liquid inlet pipe (2), the bottom surface of the connecting frame (9) is in contact with the upper surface of the buffer rubber ring (5), the bottom surface of the connecting frame (9) is fixedly connected with two positioning pins (10), the two positioning pins (10) are respectively clamped in the two positioning holes (4), the inner wall of the connecting frame (9) is fixedly connected with a sealing glass (11), the sealing glass (11) is arranged at the top end of the liquid inlet pipe (2), the inner portion of the connecting cylinder (7) is threadedly connected with a plurality of dismounting bolts (12), the bottom end of each dismounting bolt (12) penetrates into the inner portion of the connecting frame (9), the upper surface of the connecting cylinder (7) is fixedly connected with a positioning block (13), the bottom surface of the positioning block (13) is in contact with the upper surface of the cover plate (6), the upper surface of the cover plate (6) is fixedly connected with a fixed block (14), the back surface of the fixed block (14) is in contact with the front surface of the positioning block (13), the inner portion of the fixed block (14) and the inner portion of the positioning block (13) are threadedly connected with a fastening bolt (15).

2. A replaceable foam generator center tube according to claim 1, wherein: The outer surface of the shell (1) is fixedly connected with a discharge pipe (16), the outer surface of the discharge pipe (16) is fixedly connected with a butt flange (17).

3. A replaceable foam generator center tube as defined in claim 1, wherein: The outer surface of the liquid inlet pipe (2) is provided with a plurality of air inlets (18), the outer surface of the liquid inlet pipe (2) is fixedly connected with two fixed rings (19), the side face of the two fixed rings (19) close to each other is fixedly connected with an air inlet cover (20) together, the air inlet cover (20) is arranged on the outer portion of the air inlet (18), the outer surface of the air inlet cover (20) is provided with air inlet holes (21) arranged at equal distances.

4. A replaceable foam generator center tube as defined in claim 1, wherein: The outer surface of the liquid inlet pipe (2) is fixedly connected with a mounting flange (22), the upper surface of the mounting flange (22) is provided with a plurality of mounting through holes (23).

5. A replaceable foam generator center tube as defined in claim 1, wherein: The outer surface of the liquid inlet pipe (2) is fixedly connected with a reinforcing ring (24), the bottom surface of the reinforcing ring (24) is fixedly connected with the inner bottom wall of the shell (1).

6. A replaceable foam generator center tube according to claim 1, wherein: The outer surface of the connecting cylinder (7) is sleeved with a sealing ring (25), the upper surface of the sealing ring (25) is fixedly connected with the bottom surface of the cover plate (6).

7. A replaceable foam generator center tube as defined in claim 1, wherein: The front surface of the fixed block (14) is fixedly connected with two reinforcing ribs (26), the bottom surfaces of the two reinforcing ribs (26) are fixedly connected with the upper surface of the cover plate (6).

8. A replaceable foam generator center tube as defined in claim 1, wherein: The cover plate (6) is internally threaded with several fixing bolts (27), the bottom end of each fixing bolt (27) penetrates to the inside of the shell (1), and each fixing bolt (27) is in threaded connection with the shell (1).

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