Lightweight fire-fighting pressure maintaining gun pump based on gasoline engine

Abstract

The utility model discloses a kind of light-weight fire-fighting pressure-stabilizing gun pump based on gasoline engine, belong to fire-fighting equipment technical field.The gun pump mainly includes two-stroke gasoline engine, centrifugal pump main body and pressure control system.The centrifugal pump main body is made of aluminium alloy by hard anodic oxidation treatment, and its pump body and impeller constitute compact centrifugal pump structure;The two-stroke gasoline engine is directly connected with centrifugal pump main body and provides power;The pressure control system includes high-precision pressure sensor, for monitoring fire-fighting main pipeline pressure and automatically controlling the start-stop of engine.The utility model realizes that equipment weight is less than 8 kilograms by compact lightweight structural design, specific material selection and integrated pressure control, with very high mobility, fast response capability, and can automatically maintain fire-fighting pipeline pressure, especially suitable for initial fire extinguishing and small-flow pressure-stabilizing water supply.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, and in particular to a lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine. Background Technology

[0002] In the field of firefighting, especially in forest fire prevention and initial fire suppression, it is often necessary to stabilize and replenish the pressure of the main fire pipeline and ensure the pressure of the fire hoses at the end in areas where the main fire pump is not activated or cannot be covered. Traditional fire pressure stabilizing pumps are usually bulky and heavy, relying on large diesel or gasoline engines for driving. They have poor mobility, slow response speed, and cannot be quickly deployed and used in narrow or rugged terrain where vehicles cannot pass.

[0003] Therefore, there is an urgent need for a dedicated fire-fighting pressure stabilizing device that combines lightweight design, high mobility, rapid response, and automatic pressure control. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine, so as to solve the problems of traditional fire-fighting pressure-stabilizing pumps being bulky, having poor mobility, and slow response.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine includes: a two-stroke gasoline engine, a centrifugal pump body driven by the engine, and a pressure control system connected to a fire-fighting pipeline.

[0007] The centrifugal pump body includes a pump casing and an impeller disposed inside the pump casing; the pump casing is provided with an inlet and an outlet, and the inlet and outlet are respectively equipped with quick-connect interfaces;

[0008] The output shaft of the two-stroke gasoline engine is directly connected to the impeller shaft of the centrifugal pump body via a coupling, forming an integral unit;

[0009] The pressure control system includes a high-precision pressure sensor and a controller. The pressure sensor is used to detect the pressure signal of the fire main pipeline, and the controller controls the start and stop of the two-stroke gasoline engine according to the preset lower pressure limit and upper pressure limit.

[0010] Through the above technical solution, a compact unit directly integrated with a two-stroke gasoline engine, a lightweight centrifugal pump body, and a pressure control system was constructed, realizing the overall lightweighting and structural integration of the equipment, laying the structural foundation for individual soldier carrying and rapid deployment. At the same time, through automatic pressure monitoring and engine start-stop control, the pressure of the fire pipeline was automatically and stably maintained, significantly improving the emergency response speed and fire extinguishing efficiency.

[0011] As a further technical solution of this utility model: the pump casing and impeller of the centrifugal pump body are made of aluminum alloy material and are subjected to hard anodizing treatment.

[0012] The above technical solution utilizes hard anodized aluminum alloy to manufacture the pump casing and impeller. While ensuring the centrifugal pump body has excellent mechanical strength, it greatly reduces the weight of its core components and endows the flow parts with excellent corrosion resistance and wear resistance, thereby ensuring the long-term operational reliability and service life of the pump body under various water qualities and harsh fire-fighting conditions.

[0013] As a further technical solution of this utility model: the controller has a preset start-stop pressure threshold of 0.5MPa.

[0014] Through the above technical solution, the start and stop pressure threshold of the controller is preset to 0.5MPa, which provides a clear and reliable action benchmark for the fire-fighting pressure stabilization system. This ensures that the equipment can automatically start pressurization in time when the pipeline pressure is insufficient and automatically stop after the pressure is restored, thus accurately realizing the fire-fighting concept of "early detection and early response" without the need for manual intervention.

[0015] As a further technical solution of this utility model, it also includes a back frame, which is detachably and fixedly connected to the pump casing of the centrifugal pump body.

[0016] The above technical solution enables the equipment to be quickly carried by a single person and deployed at the work site. At the same time, the detachable connection structure ensures convenient disassembly and assembly of the back frame during pump maintenance or specific working conditions, taking into account both portability and maintenance operability.

[0017] As a further technical solution of this utility model: the two-stroke gasoline engine integrates an electronic ignition system, supporting both electric start and pull-cord start modes.

[0018] Through the above technical solution, an electronic ignition system with both electric start and pull-cord start modes is integrated, enabling the equipment to obtain reliable starting capability in various emergency environments (such as insufficient battery power or circuit failure), greatly improving the equipment's environmental adaptability and mission success rate.

[0019] As a further technical solution of this utility model: the quick interface is a special quick interface for forest fire fighting, which facilitates quick connection with standard forest fire fighting hoses.

[0020] The above technical solution, using a special quick-connect interface for forest fire fighting, ensures that the gun pump can be quickly, sealed, and reliably connected to standard forest fire hoses, significantly shortening equipment deployment time and meeting the stringent requirements for rapid equipment deployment in fire fighting in complex terrains such as forests and mountains.

[0021] In summary, this utility model has at least one of the following beneficial technical effects:

[0022] 1. This utility model discloses a lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine. It adopts a compact structure with a two-stroke gasoline engine directly connected to the centrifugal pump body, a lightweight aluminum alloy design for the pump casing and impeller, and a standardized quick-connect interface configuration for the inlet (DN40) and outlet (DN25). This achieves a significant reduction in overall weight and structural integration, giving the equipment excellent individual soldier mobility and making it suitable for complex terrains such as narrow and rugged terrain.

[0023] 2. This utility model discloses a lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine. By integrating a pressure control system composed of a high-precision pressure sensor and a controller, it realizes real-time monitoring and automatic start-stop control of the fire main pipeline pressure, achieves precise pressure stabilization, ensures the pressure of the end fire hose, and meets the rapid response requirements of "early detection and early response".

[0024] 3. This utility model discloses a lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine. By equipping it with a dual-mode electronic ignition system and a special quick interface for forest fire fighting, it enables reliable start-up of the equipment in various harsh environments and rapid docking with standard water hoses, thereby comprehensively improving deployment efficiency and environmental adaptability at emergency sites. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure principle of this utility model.

[0027] Reference numerals: 1. Two-stroke gasoline engine; 2. Centrifugal pump body; 21. Pump casing; 22. Impeller; 23. Inlet; 24. Outlet; 3. Pressure control system. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 1 and Figure 2 The lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine of this utility model includes a two-stroke gasoline engine 1, a centrifugal pump body 2 driven by the two-stroke gasoline engine 1, and a pressure control system 3 connected to the fire pipeline. The centrifugal pump body 2 further includes a pump casing 21 and an impeller 22 disposed in the pump casing 21. The pump casing 21 is also provided with an inlet 23 and an outlet 24. The inlet 23 and the outlet 24 are respectively equipped with DN40 and DN25 quick interfaces. This special interface can be quickly and sealingly connected to a standard forest fire hose, which can significantly shorten the hose connection time and meet the needs of emergency deployment.

[0033] Reference Figure 1 and Figure 2The output shaft of the two-stroke gasoline engine 1 is directly connected to the impeller shaft of the centrifugal pump body 2 via a coupling, making the two a compact integrated unit. This effectively reduces the overall size of the equipment and improves structural stability, avoiding the weight and volume redundancy caused by additional connecting parts in traditional split structures. Through overall structural optimization and lightweight design of core components, the weight of the entire equipment is less than 8kg. It is also equipped with a back frame made of high-strength engineering plastic or lightweight aluminum alloy. The two ends of the back frame are fixed to the mounting holes on the side of the pump housing 21 by detachable bolts. The surface of the back frame is covered with anti-slip cushioning cotton, which is convenient for a single soldier to carry on their shoulder and reduces the weight of the equipment. The friction and vibration damage to the human body caused by the equipment during the process further enhances the individual mobility of the equipment. The rated power of the two-stroke gasoline engine 1 is 2.5kW. This power parameter is precisely matched to ensure that when driving the centrifugal pump body 2, it can provide sufficient power to meet the pressure stabilization requirements without increasing the weight of the equipment or the energy consumption due to excessive power. At the same time, the two-stroke gasoline engine 1 integrates an electronic ignition system, which supports both electric start and pull-cord start modes. Under normal conditions, it can be quickly triggered by electric start, while under harsh conditions such as battery depletion or circuit failure, it can be started by pull-cord start to ensure the equipment can be used, which greatly improves environmental adaptability.

[0034] Reference Figure 2 The pump casing 21 and impeller 22 of the centrifugal pump body 2 are both made of aluminum alloy and have undergone hard anodizing treatment. The aluminum alloy material itself has a low density, which can significantly reduce the weight of the centrifugal pump body 2, laying the foundation for the overall lightweighting of the equipment. The oxide film formed by hard anodizing treatment can improve the mechanical strength of the pump casing 21 and impeller 22, resist water flow impact and friction, and isolate corrosive substances, ensuring that the equipment can operate reliably for a long time under various water qualities and harsh fire fighting conditions. The rated flow rate of the centrifugal pump body 2 is 90-120 L / min and the rated pressure is 0.5 MPa. This flow rate range can meet the small flow rate requirements of main pipeline pressure stabilization and water supply during the initial fire fighting, avoiding power waste caused by excessive flow. The rated pressure is matched with the preset threshold of the pressure control system 3 to ensure that the equipment operating pressure is stable within a reasonable range.

[0035] The pressure control system 3 includes a high-precision pressure sensor and a controller. The controller has a preset start-stop pressure threshold of 0.5 MPa (which is consistent with the rated pressure of the centrifugal pump body 2). The high-precision pressure sensor can detect the pressure signal of the fire main pipeline in real time and transmit the signal to the controller. The controller then automatically controls the start and stop of the two-stroke gasoline engine 1 based on the comparison between the detected pressure signal and the preset threshold, without the need for manual intervention. Through the synergistic cooperation of the above technical features, the equipment achieves the core functions of lightweight, high mobility, automatic pressure stabilization, rapid deployment and reliable start-up, effectively making up for the shortcomings of traditional fire pressure stabilizing pumps.

[0036] The working process of this utility model is as follows: First, the operator can carry the entire machine to the work site using a backpack frame. The forest fire hose is connected to the fire pipeline via the DN40 quick-connect interface of the inlet 23 and the DN25 quick-connect interface of the outlet 24 on the centrifugal pump body 2. Simultaneously, the pressure sensor of the pressure control system 3 is connected to the main pipeline for pressure signal acquisition. After the system is powered on, the controller of the pressure control system 3 continuously monitors the pipeline pressure. When the controller detects that the pipeline pressure is lower than the preset lower limit of 0.5 MPa, it immediately issues a start command. The two-stroke gasoline engine 1 is started through its integrated electronic ignition system, which drives the impeller 22 of the pump body 2 to rotate at high speed. The pump begins to draw water from the inlet 23 and pressurize and deliver water to the outlet 24 and subsequent pipelines. As the pipeline pressure gradually rises, when the controller detects that the pressure has returned to the preset upper limit, it immediately cuts off the ignition circuit of the two-stroke gasoline engine 1, the two-stroke gasoline engine 1 stops working, and the pumping operation stops. After that, the system enters the pressure monitoring state again, waiting for the next pressure drop signal to be triggered. This cycle repeats, and the entire pressurization and shutdown process is carried out automatically without any manual intervention, thus achieving automatic and stable maintenance of the fire pipeline pressure.

[0037] Implementation Principle: In terms of structural design, a two-stroke gasoline engine 1 is directly connected to the centrifugal pump body 2, forming a compact power unit. Simultaneously, the pump casing 21 and impeller 22 are made of hard anodized aluminum alloy, achieving lightweight and corrosion resistance for the entire unit. Regarding the control system, a pressure sensor monitors the pipeline pressure in real time, and the controller automatically controls the start and stop of the engine 1 according to a preset 0.5MPa threshold, forming a stable pressure closed-loop regulation. Furthermore, the two-stroke gasoline engine 1 is equipped with both electric start and pull-cord start modes, providing reliable starting assurance and ensuring stable operation of the equipment in various emergency scenarios.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine, characterized in that, include: A two-stroke gasoline engine (1), a centrifugal pump body (2) driven by the engine, and a pressure control system (3) connected to the fire pipeline; The centrifugal pump body (2) includes a pump casing (21) and an impeller (22) disposed inside the pump casing; the pump casing (21) is provided with an inlet (23) and an outlet (24), and the inlet (23) and the outlet (24) are respectively equipped with quick interfaces; The output shaft of the two-stroke gasoline engine (1) is connected to the impeller shaft of the centrifugal pump body (2) via a coupling; The pressure control system (3) includes a high-precision pressure sensor and a controller. The pressure sensor is used to detect the pressure signal of the fire main pipeline. The controller controls the start and stop of the two-stroke gasoline engine (1) according to the preset lower pressure limit and upper pressure limit.

2. The lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine according to claim 1, characterized in that, The pump casing (21) and impeller (22) of the centrifugal pump body (2) are made of aluminum alloy and are hard anodized.

3. A lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine according to claim 1, characterized in that: The controller has a preset start / stop pressure threshold of 0.5 MPa.

4. A lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine according to claim 1, characterized in that, It also includes a back frame, which is detachably and fixedly connected to the pump casing of the centrifugal pump body (2).

5. A lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine according to claim 1, characterized in that, The two-stroke gasoline engine (1) integrates an electronic ignition system, supporting both electric start and pull-cord start modes.

6. A lightweight fire-fighting pressure-stabilizing gun pump based on a gasoline engine according to claim 1, characterized in that, The quick interface is a special quick interface for forest fire fighting.

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