Portable venturi tube joint

Abstract

The invention relates to the technical field of fire-fighting equipment, in particular to a portable venturi pipe joint, a male port water inlet section of the venturi pipe joint is connected with a fire hose, high-pressure water flow in the fire hose enters the venturi pipe joint, and the high-pressure water flow enters a contraction section, so that the water flow speed is increased, the pressure is reduced, and the accelerated water flow enters a throat; due to the low-pressure effect of the throat, the outer liquid suction section at the bottom of the throat can suck accumulated water from the indoor ground and supplement the accumulated water into the throat, water flow mixed with the accumulated water enters a diffusion water channel in the diffusion section from the throat, and the decelerated water flow passes through the main belt water outlet section and is finally sprayed out through a connected fire-fighting lance head. By means of the Venturi effect, indoor accumulated water can be sucked into a pipeline and used for fire extinguishing again, continuous and stable water flow is guaranteed through secondary water supplementing fire extinguishing, the fire extinguishing effect is enhanced, the indoor accumulated water amount can be reduced by sucking and reusing the accumulated water, secondary damage caused by the accumulated water is reduced, and the joint is simple in structure and convenient to use. And firefighters can carry and install the device conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of fire fighting equipment, in particular to a portable venturi pipe joint. Background Art

[0002] With the acceleration of urbanization, the height and complexity of modern buildings are increasing, and the potential risk of fire is also rising. In order to protect people's lives and property safety, the research and development and application of fire-fighting equipment are particularly important. Traditional fire-fighting equipment includes fire extinguishers, fire hydrants, automatic sprinkler fire extinguishing systems, etc. These equipment can quickly control the fire and reduce the losses caused by the fire when a fire occurs. However, they also have some significant shortcomings in practical applications, especially in the process of indoor fire fighting, which can easily cause a large amount of water accumulation.

[0003] Existing fire-fighting equipment mainly relies on a large amount of water resources for fire-fighting, which can cause serious water accumulation indoors. Taking fire hydrants as an example, fire hydrants directly spray high-pressure water flow to extinguish fires by connecting water hoses. Since it is difficult to accurately control the amount of water sprayed, it is easy to cause excessive water indoors, resulting in serious water accumulation. Severe water accumulation will cause damage to furniture, electrical appliances, floors, etc., and increase property losses after a fire.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0005] In view of the technical problem mentioned above, the existing fire-fighting equipment mainly relies on a large amount of water resources to extinguish fires, which will cause serious water accumulation indoors and damage furniture, electrical appliances, floors, etc.

[0006] The technical solution adopted by the present invention to solve the technical problem is: A portable venturi pipe joint comprises a male water inlet section, a contraction section, a throat, a diffusion section and a mother belt water outlet section which are connected in sequence, wherein the male water inlet section can be connected to a fire hose, and the mother belt water outlet section can be connected to a fire hose head. A contraction water channel is provided in the contraction section, and a diffusion water channel is provided in the diffusion section. Both the contraction water channel and the diffusion water channel are in a shape that gradually contracts toward the throat. An external liquid suction section is provided at the bottom of the throat and is connected thereto, and the external liquid suction section can absorb indoor accumulated water and replenish it into the throat.

[0007] In the portable venturi tube joint as described above, the external suction section comprises an external suction tube connected to the throat.

[0008] In the portable venturi pipe joint as described above, the external suction section further comprises a water filter arranged on the free end of the external suction pipe, and the water filter can filter impurities in the indoor accumulated water.

[0009] In the portable venturi pipe joint as described above, the water filter comprises a filter housing communicated with an external liquid suction pipe and a filter screen arranged on the filter housing.

[0010] In a portable venturi pipe joint as described above, the filter is arranged at the bottom of the filter housing, and the bottom of the filter housing is also provided with a plurality of support protrusions extending downward, the plurality of support protrusions can prevent the filter from abutting against the ground, the plurality of support protrusions are arranged at intervals, and there is a water inlet gap between adjacent support protrusions.

[0011] In the portable venturi tube joint as described above, the external suction section also includes a connecting component arranged between the external suction tube and the water filter, and the connecting component includes a water pipe joint, or the connecting component includes a fluid universal joint.

[0012] In the portable venturi pipe joint as described above, the external liquid suction section also includes a buoyancy component arranged on the water filter, and the buoyancy component can provide buoyancy for the water filter placed in the indoor water.

[0013] In the portable venturi tube joint as described above, the buoyancy assembly includes an adjustable airbag and a first connecting member, and the adjustable airbag is connected to the water filter through the first connecting member.

[0014] In the portable venturi pipe joint as described above, a second connecting member is provided between the outer liquid suction section and the throat, which enables the two to be detachably connected.

[0015] In the portable venturi pipe joint as described above, the contraction section is detachably connected to the male water inlet section and the throat, respectively, and the diffusion section is detachably connected to the female water outlet section and the throat, respectively.

[0016] The beneficial effects of the present invention are: The portable venturi pipe joint of the present invention relates to the technical field of fire-fighting equipment. The male water inlet section of the venturi pipe joint is connected with the fire hose. The high-pressure water flow in the fire hose enters the venturi pipe joint, and the high-pressure water flow enters the contraction section, so that the water flow speed is increased, the pressure is reduced, and the accelerated water flow enters the throat. Due to the low-pressure effect of the throat, the external suction liquid section at the bottom can absorb the accumulated water from the indoor floor and replenish it into the throat. The water flow mixed with the accumulated water enters the diffusion waterway in the diffusion section from the throat. The decelerated water flow passes through the mother belt water outlet section and is finally sprayed out by the connected fire hose head. By utilizing the Venturi effect, the indoor accumulated water can be sucked into the pipeline and reused for fire extinguishing. The secondary water replenishment fire extinguishing ensures a continuous and stable water flow and enhances the fire extinguishing effect. By absorbing and reusing the accumulated water, the amount of indoor accumulated water can be significantly reduced, and the secondary damage caused by the accumulated water can be reduced. In addition, the joint has a simple structure and is convenient for firefighters to carry and install.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a side view schematic diagram of the present invention; Figure 3 for Figure 2 Schematic cross-sectional view along line AA; Figure 4 It is one of the exploded schematic diagrams of the present invention; Figure 5 This is the second decomposition schematic diagram of the present invention; Figure 6 is an exploded schematic diagram of a water filter of the present invention; Figure 7 It is a schematic diagram of the assembly structure of the liquid universal joint, the external liquid suction tube, and the water filter of the present invention; Figure 8 It is a cross-sectional schematic diagram of the assembly of the liquid universal joint, the external liquid suction tube, and the water filter of the present invention; Fig. 9 This is one of the exploded schematic diagrams of the liquid universal joint of the present invention; Fig.10 This is the second exploded schematic diagram of the liquid universal joint of the present invention. DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figures 1 to 10 As shown, a portable venturi pipe joint of the present embodiment includes a male water inlet section 1, a contraction section 2, a throat 3, a diffusion section 4 and a mother belt water outlet section 5 connected in sequence, the male water inlet section 1 can be connected to a fire hose, the mother belt water outlet section 5 can be connected to a fire hose head, the contraction section 2 is provided with a contraction water channel 21, the diffusion section 4 is provided with a diffusion water channel 41, the contraction water channel 21 and the diffusion water channel 41 are both in a shape that gradually contracts toward the throat 3, the bottom of the throat 3 is provided with an external liquid suction section 6 connected thereto, the external liquid suction section 6 can absorb indoor accumulated water and replenish it into the throat 3.

[0021] Specifically, the working principle of the portable venturi pipe joint of this embodiment is based on the Venturi effect, which is a fluid dynamics phenomenon. When the fluid passes through the gradually contracting pipe section, its flow rate will increase and the pressure will decrease; while when passing through the diffusion section, the flow rate will decrease and the pressure will increase. The specific working principle is as follows: The public water inlet section 1 is connected to the fire hose, and the high-pressure water flow in the fire hose enters the Venturi pipe joint, and the high-pressure water flow enters the contraction section 2. Since the contraction waterway 21 is provided in the contraction section 2, the water flow cross-section gradually decreases, so that the water flow velocity increases and the pressure decreases. The accelerated water flow enters the throat 3. The cross-sectional area of ​​the throat 3 is small, so that the water flow velocity reaches the maximum, forming a significant low-pressure area. The side wall of the throat 3 is provided with an external liquid suction section 6. Due to the low-pressure effect of the throat 3, the external liquid suction section 6 can absorb the accumulated water from the indoor floor and replenish it into the throat 3, and the mixed The water flow combined with the accumulated water enters the diffusion waterway 41 in the diffusion section 4 from the throat 3, the water flow cross-section gradually increases, the water flow speed decreases, the pressure rises, and the decelerated water flow passes through the mother belt water outlet section 5, and is finally sprayed out by the connected fire hose head to achieve fire extinguishing. The portable Venturi pipe joint of this embodiment utilizes the Venturi effect to suck the indoor accumulated water into the pipe and reuse it for fire extinguishing. Through secondary water replenishment fire extinguishing, a continuous and stable water flow is guaranteed, and the fire extinguishing effect is enhanced. Especially when water resources are limited, the fire extinguishing efficiency can be significantly improved.

[0022] In addition, it effectively reduces the use of fresh water resources and realizes the recycling of resources. By absorbing and reusing accumulated water, it can significantly reduce the amount of water accumulation in the room, reduce the damage of accumulated water to furniture, electrical appliances and floors, reduce the secondary damage caused by accumulated water, reduce the damage to indoor property caused by fire, and reduce the cost of repair after fire.

[0023] The joint has a simple structure, is easy to carry and install, is suitable for various complex fire scenes, and enhances the emergency handling capabilities of firefighters.

[0024] Furthermore, when there is available water source around the water supply trunk line of the water hose, with the help of the Venturi effect, the external liquid suction section 6 can not only absorb the indoor accumulated water, but also absorb the available water source around the water supply trunk line, so that water resources can be efficiently recycled during the fire extinguishing process, which can be selected according to actual needs.

[0025] like Figures 1 to 10 As shown, the external liquid suction section 6 of this embodiment includes an external liquid suction pipe 61 connected to the throat 3. Due to the low-pressure area formed by the throat 3, the external liquid suction pipe 61 can absorb accumulated water from the indoor floor and replenish it into the throat 3, which has the advantages of simple structure and easy operation.

[0026] Preferably, the external liquid suction tube 61 can be a soft tube or a hard tube, and a suitable design can be selected according to actual needs.

[0027] like Figures 1 to 10 As shown, the external liquid suction section 6 of this embodiment further includes a water filter 62 disposed on the free end of the external liquid suction pipe 61. The water filter 62 can effectively filter impurities in the accumulated water to prevent the impurities from clogging the pipeline.

[0028] like Figures 1 to 10As shown, the water filter 62 of this embodiment includes a filter housing 621 connected to the external suction tube 61 and a filter screen 622 arranged on the filter housing 621. Specifically, the filter housing 621 is installed at the free end of the external suction tube 61 to ensure that the sucked water flow first passes through the filter housing. The filter screen 622 is installed on the filter housing 621 and is specifically used to intercept impurities and particles in the water flow. The filter screen is designed to effectively block larger particles. While maintaining a sufficient water flow speed, it does not affect the water absorption efficiency. Through effective filtration, the stability and continuity of the water flow are ensured, and the fire extinguishing operation is uninterruptedly supported.

[0029] Specifically, the filtering effect of the filter 622 can effectively prevent impurities from entering the pipeline, prevent pipeline blockage, ensure the normal operation of the equipment, reduce the maintenance requirements and costs caused by impurity blockage or equipment damage, and improve the continuous use efficiency of the equipment. In addition, the filtered water flow is cleaner, which helps to improve the quality and effect of the fire extinguishing water flow.

[0030] Furthermore, it reduces the wear of impurities on the inside of the equipment and extends the service life of the Venturi pipe joint and related equipment.

[0031] Furthermore, such a design effectively improves the adaptability of the Venturi pipe joint, enabling it to operate effectively in various complex fire scenes and ensuring that the water flow drawn from different water sources always maintains high quality.

[0032] like Figures 1 to 10 As shown, the filter screen 622 of this embodiment is arranged at the bottom of the filter shell 621 for preliminarily filtering impurities in the water. The bottom of the filter shell 621 is also provided with a plurality of support protrusions 623 extending downward. The plurality of support protrusions 623 can support the entire filter shell 621 to prevent the filter screen 622 from contacting and abutting against the ground, thereby avoiding the situation where the filter screen 622 is attached to the ground and causing water flow blockage.

[0033] Preferably, a plurality of the support protrusions 623 are arranged at intervals, and a water inlet gap 624 is provided between adjacent support protrusions 623, thereby ensuring that water can smoothly flow into the filter housing 621. Even when the filter housing 621 is placed flat or in contact with the ground, due to the design of the support protrusions 623, the portion of the filter housing 621 having the filter screen 622 also has a certain gap with the ground, thereby ensuring that the filter housing 621 can effectively absorb water.

[0034] Preferably, the filter shell 621 in this embodiment is in the shape of a trumpet that is narrow at the top and wide at the bottom. The trumpet-shaped design can naturally guide the water flow to the filter screen to increase the filtration efficiency. The wide lower structure can accommodate a larger filter area, increase the filtration capacity, and reduce the need for frequent cleaning. The larger contact area can further improve the filtration effect and ensure that more impurities are effectively intercepted.

[0035] Furthermore, the bottom of the trumpet-shaped filter housing 621 is wider, which helps to maintain stability underwater and is not easy to tip over or move. The support protrusions 623 further enhance its fixing effect to ensure that the filter does not contact the ground.

[0036] In other embodiments, multiple layers of filter screens may be arranged inside the filter housing, and the aperture of each layer of filter screens gradually decreases, so as to grade and filter impurities of different sizes. Such a design can improve the filtering accuracy and extend the service life of the main filter screen.

[0037] like Figures 1 to 10 As shown, the external liquid suction section 6 of this embodiment also includes a connecting component 7 arranged between the external liquid suction tube 61 and the water filter 62, and the connecting component 7 includes a water pipe joint. Such a design facilitates the loading and unloading of the water filter 62 and the external liquid suction tube 61, simplifies the maintenance and cleaning process, and allows the user to easily replace or clean the water filter 62.

[0038] Preferably, in other embodiments, the connecting component 7 includes a fluid universal joint, which allows the external pipette tube 61 and the water filter 62 to rotate and move freely in multiple directions to adapt to forces in various directions generated during the pipetting process. The fluid universal joint prevents the external pipette tube 61 and the water filter 62 from being dragged and turned over due to the movement of the external pipette tube 61 and the water filter 62 during the pipetting process through free rotation and flexible adjustment. The anti-drag and turn design ensures that the water filter is always in the correct working position during the pipetting process, and avoids the situation where air is sucked into the external pipette to block the water flow, thereby ensuring the continuity and efficiency of the pipetting.

[0039] Preferably, the fluid universal joint includes a connecting section 71, a water supply section 72 and a universal section 73, the connecting section 71 is connected to the external liquid suction tube 61, the water supply section 72 is connected to the water filter 62, and the universal section 73 is arranged between the connecting section 71 and the water supply section 72, and the universal section 73 can change the angle between the connecting section 71 and the water supply section 72 so that the external liquid suction tube 61 and the water filter 62 can rotate and move freely in multiple directions.

[0040] Furthermore, the water filter has a certain weight, and the weight of the water filter itself can help it remain stable in the water and is not easily moved by external forces. The fluid universal joint allows the water filter to move and rotate freely in multiple directions to adapt to changes in external forces. By utilizing its own weight and the cooperation of the fluid universal joint, even if the external suction tube is dragged, the water filter can still remain in the correct position to a certain extent. The stable position of the water filter can prevent air from entering the pipeline and ensure that the water flow is not interrupted. Through the stable position of the water filter, efficient water flow is continuously provided to enhance the fire extinguishing effect.

[0041] Preferably, the universal section 73 includes a universal ball head 731 , and a water outlet hole 732 is provided in the universal ball head, so that the external liquid suction tube 61 can absorb the water filtered by the water filter 62 through the water outlet hole 732 .

[0042] Preferably, the universal section 73 further includes a spherical connecting portion 733 matching the universal ball head 731. The universal ball head 731 can rotate along the inner wall track of the spherical connecting portion 733 , thereby changing the angle between the external liquid suction tube 61 and the water filter 62 .

[0043] Preferably, when the spherical connecting part 733 is provided on the connecting section 71, the universal ball head 731 is provided on the water supply section 72; when the spherical connecting part 733 is provided on the water supply section 7, the universal ball head 731 is provided on the connecting section 71. The appropriate design can be selected according to actual needs.

[0044] Preferably, the fluid universal joint may also adopt the following structure: The elastic joint design is made of flexible materials, which enables the joint to bend and twist within a certain range, providing multi-directional adaptability.

[0045] The swivel joint adopts a multi-layer joint design to allow multiple angles of rotation while maintaining sealing.

[0046] Telescopic joints, with telescopic mechanisms added to the joints, allow for adjustments in length to suit different operating environments, and the appropriate design can be selected based on actual needs.

[0047] like Figures 1 to 10 As shown, the external liquid suction section 6 of the present embodiment also includes a buoyancy component 8 arranged on the water filter 62. The buoyancy component 8 can provide buoyancy for the water filter 62 placed in the indoor water through the buoyancy of the buoyancy material, so that the water filter 62 is suspended at a certain water depth, which can ensure that when absorbing water in deep water areas, the water filter does not touch the bottom, and the filter screen is prevented from being blocked or damaged due to contact with the ground.

[0048] Furthermore, the buoyancy component 8 ensures that the water filter is suspended in the water and does not touch the bottom, thereby effectively avoiding clogging of the filter and improving the water absorption efficiency.

[0049] Specifically, the buoyancy component 8 can ensure the stability of the water filter in the water and prevent the water filter from tipping over due to water flow or operational errors. The design of the buoyancy component 8 enables the water filter to move and adjust freely in the water, which is flexible and convenient to operate, thereby improving the user experience.

[0050] like Figures 1 to 10As shown, the buoyancy assembly 8 of this embodiment includes an adjustable airbag and a first connecting member. The adjustable airbag is connected to the water filter 62 via the first connecting member. The immersion depth of the water filter can be adjusted by adjusting the buoyancy of the adjustable airbag.

[0051] Specifically, the adjustable airbag can adjust the buoyancy by inflating or deflating, and the buoyancy of the airbag can be adjusted by changing the volume of air inside the airbag, thereby adjusting the immersion depth of the water filter in the water.

[0052] Specifically, the adjustable airbag is firmly connected to the water filter 62 through the first connecting member to ensure that the airbag will not fall off during the buoyancy adjustment process, thereby maintaining the stability of the water filter in the water.

[0053] Preferably, the first connecting member may be in the form of a buckle, a thread, a hook, etc., to firmly connect the adjustable airbag to the water filter 62, thereby ensuring a firm connection between the adjustable airbag and the water filter, while allowing the buoyancy adjustment of the airbag to directly affect the water filter.

[0054] Specifically, the user fills air into the adjustable airbag to increase the volume and buoyancy of the airbag, causing the water filter to float and reduce its immersion depth in the water; releases air from the adjustable airbag to reduce the volume and buoyancy of the airbag, causing the water filter to sink and increase its immersion depth in the water. The buoyancy of the airbag can be adjusted by inflating or deflating the airbag according to actual needs, thereby accurately controlling the immersion depth of the water filter, preventing the water filter from touching the bottom or floating too high, and ensuring the best water absorption effect.

[0055] Furthermore, by adjusting the buoyancy, the water filter is prevented from touching the bottom in deep water, the filter is prevented from being blocked or damaged, and the durability and reliability of the equipment are improved.

[0056] Furthermore, the design of the buoyancy assembly 8 simplifies the operation process. The user can easily adjust the buoyancy by inflating or deflating the air bag to achieve flexible operation. The buoyancy adjustment function of the adjustable airbag enables the device to adapt to different water depth environments, thereby improving the versatility and applicability of the device.

[0057] Preferably, in some other embodiments, the buoyancy assembly 8 may also adopt the following structure: Fixed buoyancy blocks are usually made of lightweight materials, such as foam plastics, polystyrene or other buoyancy materials. These buoyancy blocks can be directly fixed on the water filter 62 to provide constant buoyancy and ensure that the water filter does not touch the bottom. They are suitable for scenarios where frequent buoyancy adjustment is not required and have the advantages of simple structure and low cost.

[0058] The adjustable buoyancy block is composed of a plurality of small buoyancy blocks that can be removed or added. Each buoyancy block can be fixed on the water filter 62 through a connector. The user can adjust the buoyancy by increasing or decreasing the number of buoyancy blocks as needed. The buoyancy size can be flexibly adjusted to meet different water depth requirements. By increasing or decreasing the buoyancy blocks, the water entry depth of the water filter can be accurately controlled. The adjustment is flexible, the adaptability is strong, no complicated equipment and tools are required, and the operation is simple.

[0059] The telescopic buoyancy column is composed of multiple retractable buoyancy units. The length is adjusted through a mechanical structure. Waterproof materials and mechanical locking devices are usually used to ensure reliability. The length of the buoyancy column is adjusted through the telescopic mechanism, the buoyancy action point is changed, and the water immersion depth of the water filter is adjusted. It is suitable for scenarios that require precise control of buoyancy.

[0060] The inflatable buoyancy chamber is composed of multiple independent inflatable chambers, each of which can be inflated or deflated independently. It adopts waterproof materials and inflation and deflation valves. The buoyancy is adjusted by controlling the inflation volume of each inflatable chamber to control the water immersion depth of the water filter.

[0061] The buoyancy ring may be one or more annular buoyancy bodies installed around the water filter 62. The material may be foam, plastic or other lightweight materials with buoyancy. The buoyancy ring can provide surrounding buoyancy to ensure that the water filter remains level and stable in the water. The buoyancy can be changed by increasing or decreasing the number of buoyancy rings or adjusting the position of the rings to provide stable buoyancy and ensure the horizontal position of the water filter. The appropriate design can be selected according to actual needs.

[0062] like Figures 1 to 10 As shown, a second connecting member is provided between the external liquid suction section 6 and the throat 3 of this embodiment to enable the two to be detachably connected. This design allows the external liquid suction section 6 and the throat 3 to be easily disassembled and assembled, and is convenient for cleaning, maintenance and replacement.

[0063] Preferably, the second connecting member can be connected by a thread, and the connection and disassembly of the external liquid suction section 6 and the throat 3 can be achieved by tightening or loosening the thread; a snap-on structure can also be used to achieve quick connection and disassembly through simple insertion and removal actions; a quick connector with a sealing ring can also be used to achieve reliable connection and quick disassembly through docking and locking mechanisms, and the appropriate design can be selected according to actual needs.

[0064] The user can select a suitable second connection member form according to the needs, connect the external liquid suction section 6 and the throat 3, and achieve a stable connection by rotating the thread, inserting the buckle or connecting the quick connector.

[0065] Specifically, when the external liquid suction segment 6 needs to be cleaned, maintained or replaced, the user can easily remove the external liquid suction segment 6 from the throat 3 through the second connecting component. The detachable design makes the maintenance and replacement of the external liquid suction segment 6 more convenient, improves the maintenance efficiency and service life of the equipment, and the user can quickly replace the external liquid suction segment 6 according to different usage requirements, thereby expanding the function of the equipment and diversifying the application scenarios.

[0066] like Figures 1 to 10 As shown, the contraction section 2 of the present embodiment is detachably connected to the male water inlet section 1 and the throat 3, respectively, and the diffusion section 4 is detachably connected to the mother belt water outlet section 5 and the throat 3, respectively. With such a design, the entire joint structure is a combined structure, and when a part is damaged, it can be replaced, or it can be replaced with parts of different sizes to adapt to water hoses, water guns and external suction tubes of different sizes.

[0067] Specifically, the contraction section 2 is detachably connected to the male water inlet section 1 and the throat 3, respectively, and can be connected in the form of threaded connection, snap connection or quick connector to achieve fast and stable connection and disassembly. The contraction section 2 is detachably connected to the male water inlet section 1 and the throat 3, respectively, to achieve contraction and guidance of the water flow, ensure the stability of the water flow and increase the flow rate, improve the maintainability and flexibility of the equipment, any damaged part can be replaced separately, reducing maintenance costs, adapting to water inlet sections and throats of different sizes and specifications, and enhancing the versatility of the equipment.

[0068] Specifically, the detachable connection between the diffuser section 4 and the mother belt water outlet section 5 and the throat 3 can also be in the form of threaded connection, snap connection or quick connector to achieve reliable connection and disassembly.

[0069] The diffusion section 4 is detachably connected with the mother belt water outlet section 5 and the throat 3 to achieve diffusion and guidance of the water flow, ensuring uniform distribution and deceleration of the water flow. The user can easily achieve a firm connection and easy disassembly of the diffusion section 4 with other sections by rotating the thread, inserting the buckle or locking the quick connector, thereby improving the replaceability of the equipment. Any damaged part can be quickly replaced, reducing downtime, and being able to adapt to water outlet sections and throats of different sizes and specifications, enhancing the applicability of the equipment.

[0070] Furthermore, the various parts are connected in a detachable manner to achieve quick disassembly and replacement, which significantly improves the maintainability and maintenance efficiency of the equipment. Only the damaged parts need to be replaced, avoiding replacement of the entire equipment, reducing maintenance costs and waste of resources. By replacing parts of different sizes, the equipment can adapt to water hoses, water guns and external suction tubes of different specifications and sizes, enhancing the versatility and adaptability of the equipment. The detachable connection design makes operation easier and faster, reduces installation and disassembly time, and improves work efficiency.

[0071] Preferably, the diffuser section 4 and the contraction section 2 of the present embodiment are both cylindrical. The cylindrical design is simple to manufacture, easy to process and install, reducing production costs and complexity. The cylindrical design matches other cylindrical connecting components to ensure the consistency and stability of the entire system structure. During the installation process, a quick and stable connection is achieved through a standardized cylindrical interface.

[0072] In other embodiments, the diffuser section 4 and the contraction section 2 are both trumpet-shaped, which are similar to or identical to the shapes of the corresponding diffuser water channel 41 and contraction water channel 21 .

[0073] Specifically, the contraction section 2 and the contraction waterway 21 are designed to be trumpet-shaped, so that the water flow can gradually contract before entering the throat 3. The trumpet-shaped structure gradually reduces the cross-sectional area of ​​the water flow, thereby increasing the flow rate. The trumpet-shaped design helps to reduce flow resistance, quickly increase the water flow speed, and enhance the water flow's jetting ability. The optimized trumpet shape makes the water flow contraction process more uniform, reducing turbulence and energy loss.

[0074] Specifically, the trumpet-shaped smooth curved surface further reduces the resistance of water flow and improves the flow efficiency of the fluid.

[0075] Preferably, the diffusion section 4 and the diffusion water channel 41 are designed to be trumpet-shaped, so that the water flow can gradually diffuse after leaving the throat 3. The trumpet-shaped structure gradually increases the cross-sectional area of ​​the water flow, thereby reducing the flow rate and ensuring uniform distribution of the water flow.

[0076] Furthermore, the smooth trumpet-shaped surface reduces water turbulence and energy loss, ensuring a smooth transition of the fluid, and the optimized trumpet shape helps reduce energy loss during the diffusion process and improves fluid utilization efficiency.

[0077] The above-mentioned trumpet-shaped design can optimize the contraction and diffusion process of the water flow, improve the fluid mechanics performance of the system, and enhance the water flow efficiency. The trumpet-shaped design optimizes the water flow path and ensures the uniformity and stability of the water flow during the contraction and diffusion process.

[0078] Specifically, the design of the trumpet-shaped structure is consistent with the shapes of the diffuser section 4 and the contraction section 2, which is convenient for manufacturing and installation, and improves the consistency and reliability of the product.

[0079] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A portable venturi pipe joint, characterized in that: The invention comprises a male water inlet section (1), a contraction section (2), a throat (3), a diffusion section (4) and a mother belt water outlet section (5) which are connected in sequence. The male water inlet section (1) can be connected to a fire hose, and the mother belt water outlet section (5) can be connected to a fire hose. A contraction water channel (21) is provided in the contraction section (2), and a diffusion water channel (41) is provided in the diffusion section (4). Both the contraction water channel (21) and the diffusion water channel (41) are in a shape of gradually contracting toward the throat (3). The bottom of the throat (3) is provided with an external liquid suction section (6) which is connected thereto, and the external liquid suction section (6) can absorb indoor accumulated water and replenish it into the throat (3).

2. A portable venturi pipe joint according to claim 1, characterized in that: The external liquid suction section (6) comprises an external liquid suction tube (61) connected to the throat (3).

3. A portable venturi pipe joint according to claim 2, characterized in that: The external liquid suction section (6) further comprises a water filter (62) arranged on the free end of the external liquid suction pipe (61), wherein the water filter (62) is capable of filtering impurities in the indoor accumulated water.

4. A portable venturi pipe joint according to claim 3, characterized in that: The water filter (62) comprises a filter housing (621) connected to the external liquid suction tube (61) and a filter screen (622) arranged on the filter housing (621).

5. A portable venturi pipe joint according to claim 4, characterized in that: The filter screen (622) is arranged at the bottom of the filter housing (621), and the bottom of the filter housing (621) is also provided with a plurality of support protrusions (623) extending downwards, the plurality of support protrusions (623) can prevent the filter screen (622) from abutting against the ground, the plurality of support protrusions (623) are arranged at intervals, and there is a water inlet gap (624) between adjacent support protrusions (623).

6. A portable venturi pipe joint according to claim 3, characterized in that: The external liquid suction section (6) further comprises a connection assembly (7) provided between the external liquid suction pipe (61) and the water filter (62); the connection assembly (7) comprises a water pipe joint, or the connection assembly (7) comprises a fluid universal joint.

7. A portable venturi pipe joint according to any one of claims 3 to 6, characterized in that: The external liquid suction section (6) further comprises a buoyancy component (8) provided on the water filter (62), wherein the buoyancy component (8) is capable of providing buoyancy for the water filter (62) placed in the accumulated water in the room.

8. A portable venturi pipe joint according to claim 7, characterized in that: The buoyancy component (8) comprises an adjustable airbag and a first connecting component, and the adjustable airbag is connected to the water filter (62) via the first connecting component.

9. A portable venturi pipe joint according to claim 1, characterized in that: A second connecting member is provided between the external liquid suction section (6) and the throat (3) so as to enable the two to be detachably connected.

10. The portable venturi pipe joint according to claim 1, characterized in that: The contraction section (2) is detachably connected to the male water inlet section (1) and the throat (3), respectively, and the diffusion section (4) is detachably connected to the female belt water outlet section (5) and the throat (3), respectively.

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