Small fire pump

Abstract

The utility model discloses a small fire pump which comprises a pump shell, a dynamic impeller and a power output shaft are arranged in the pump shell, a pump outer cover is arranged on the front side wall of the pump shell, the circumferential face of the power output shaft is fixedly connected with the dynamic impeller, and the rear side wall of the power output shaft penetrates through the pump shell and is rotationally connected with the pump shell. A static impeller is arranged on the rear side wall of the pump outer cover, a sealing groove is formed in the rear side wall of the pump outer cover, and the pump shell, the dynamic impeller and the pump outer cover are all formed by casting aluminum parts in a finish machining mode. By means of the structure, the water supply device can adapt to various kinds of power, has the advantages of being small in size, easy to carry, light in weight, low in oil consumption, low in work, efficient, capable of achieving multiple purposes and multiple matching in one machine and easy and convenient to install, is lower in economic cost, is suitable for being widely popularized in the fields of grassland emergency fire fighting water supply, mountain forest fire fighting, agricultural irrigation and the like, and has great market popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of fire pumps, in particular to a small fire pump. Background Art

[0002] Fire pumps, as the name implies, are pumps used in fire fighting. They are divided into different types according to different classification methods. With its fully sealed, leak-free, and corrosion-resistant characteristics, it is widely used in environmental protection, water treatment, fire fighting and other departments. It is used to pump various liquids and is an ideal pump and fire fighting system for creating leak-free, pollution-free civilized workshops and civilized factories. The types of pumps are similar, but the head and flow rate are different. The selection basis of fire pumps should be based on five aspects, including process flow, water supply and drainage requirements, etc. The performance and technical conditions of fire pumps meet the requirements of the standard "Fire Pump Performance and Test Methods".

[0003] In the existing fire pumps, the power mechanism matched with the fire pumps is single and cannot be universally used. In addition, the existing fire pumps are heavy, have high fuel consumption, low output efficiency, and are very inconvenient to maintain. Utility Model Content

[0004] The purpose of the utility model is to provide a small fire pump that can be adapted to a variety of power sources and has the advantages of small size, easy to carry, light weight, low fuel consumption, low power and high efficiency. It can achieve the advantages of one machine for multiple uses and one machine for multiple configurations, and is simple and convenient to install. It has a lower economic cost and is suitable for widespread promotion in grassland emergency fire water supply, forest fire fighting, agricultural irrigation and other fields, and has significant market promotion value.

[0005] To achieve the above-mentioned purpose, a small fire pump is provided, comprising: a pump casing, a dynamic impeller and a power output shaft are arranged inside the pump casing, a pump cover is arranged on the front side wall of the pump casing, the circumferential surface of the power output shaft is fixedly connected to the dynamic impeller, the rear side wall of the power output shaft passes through the pump casing and is rotatably connected to the pump casing, a static impeller is arranged on the rear side wall of the pump cover, and a sealing groove is arranged on the rear side wall of the pump cover.

[0006] Preferably, the pump casing, dynamic impeller and pump cover are all made of precision-machined cast aluminum parts.

[0007] Preferably, the pump casing and the pump cover are fixedly connected by bolts.

[0008] Preferably, the static impeller and the pump housing are an integrally formed structure, and six water guide blades are provided on the static impeller.

[0009] Preferably, the dynamic impeller is provided with five water guide blades.

[0010] Preferably, a water outlet is provided on the pump casing, and a water inlet is provided on the pump outer cover.

[0011] According to the small fire pump, a sealing strip is clamped inside the sealing groove.

[0012] Compared with the prior art, the utility model has the following beneficial effects: by arranging a pump casing, a dynamic impeller, a pump cover, a power output shaft and a static impeller, it can be adapted to a variety of power, has the advantages of small size, easy to carry, light weight, low fuel consumption, low power and high efficiency, can achieve the advantages of one machine for multiple uses, one machine for multiple configurations, simple and convenient installation, and its economic cost is lower, and it is suitable for wide promotion in grassland emergency fire water supply, mountain forest fire fighting, agricultural irrigation and other fields, and has great market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a rear view of the utility model;

[0015] Figure 3 It is the exploded structure diagram of the utility model;

[0016] Figure 4 This is a structural diagram of the pump outer cover in the utility model.

[0017] In the figure: 1. Pump casing; 2. Dynamic impeller; 3. Pump cover; 4. Power output shaft; 5. Static impeller; 6. Sealing groove. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0019] Reference Figure 1-4The utility model embodiment is a small fire pump, which includes: a pump casing 1, the pump casing 1 can be directly connected to a variety of small power sources, the rear side wall of the pump casing can be directly fixed to the crankcase of the engine, and it is convenient to install by fixing with four screws. A dynamic impeller 2 and a power output shaft 4 are arranged inside the pump casing 1. Five water guide blades are arranged on the dynamic impeller 2, which has the advantages of high water pressure, long head, safety and not easy to burst during high-speed operation, etc. A pump cover 3 is arranged on the front side wall of the pump casing 1, the pump casing 1 and the pump cover 3 are fixedly connected by bolts, the circumferential surface of the power output shaft 4 is fixedly connected to the dynamic impeller 2, and the rear side wall of the power output shaft 4 passes through the pump casing. 1, and is rotatably connected with the pump housing 1, the power output shaft 4 can be suitable for configuring a variety of small power, two-stroke gasoline engines, four-stroke gasoline engines, etc., with a power between 1.3 kW and 3.0 kW, and a speed between 5000 rpm and 8000 rpm, which can achieve multiple uses of one machine and multiple configurations of one machine, and the installation is simple and convenient, which effectively solves the problem of power source and the problem of carrying and transportation. It can be carried on the back, can be hand-held, and can be installed and fixed in a variety of vehicles and mobile small fire stations. A static impeller 5 is arranged on the rear side wall of the pump cover 3, and the static impeller 5 and the pump cover 3 are an integrated structure, and the static impeller 5 is provided with six water guide blades.

[0020] The pump casing 1, the dynamic impeller 2 and the pump outer cover 3 are all made of cast aluminum parts with precision machining. The pump casing 1 is provided with a water outlet, the pump outer cover 3 is provided with a water inlet, and a sealing groove 6 is provided on the rear side wall of the pump outer cover 3. A sealing strip is clamped inside the sealing groove 6 to improve the sealing between the pump outer cover 3 and the pump casing 1 and prevent water leakage, thereby better solving the defect of water leakage of the pump casing 1 when the fire pump is working at high speed.

[0021] Working principle: The power output shaft 4 is directly connected to the power or connected to the clutch of the engine through the clutch passive disc. The power output shaft 4 rotates, thereby driving the dynamic impeller 2 to rotate, and then sucking water from the water inlet end on the pump cover 3, and then discharging it from the water outlet end of the pump casing 1, working in a cycle, thereby normally outputting high-lift water.

[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A small fire pump, comprising a pump casing (1), characterized in that: A dynamic impeller (2) and a power output shaft (4) are arranged inside the pump housing (1); a pump cover (3) is arranged on the front side wall of the pump housing (1); the circumferential surface of the power output shaft (4) is fixedly connected to the dynamic impeller (2); the rear side wall of the power output shaft (4) passes through the pump housing (1) and is rotatably connected to the pump housing (1); a static impeller (5) is arranged on the rear side wall of the pump cover (3); and a sealing groove (6) is arranged on the rear side wall of the pump cover (3).

2. A small fire pump according to claim 1, characterized in that: The pump casing (1), the dynamic impeller (2), and the pump cover (3) are all made of cast aluminum parts through precision machining.

3. A small fire pump according to claim 1, characterized in that: The pump casing (1) and the pump outer cover (3) are fixedly connected by bolts.

4. A small fire pump according to claim 1, characterized in that: The static impeller (5) and the pump housing (3) are an integrally formed structure, and six water guide blades are provided on the static impeller (5).

5. A small fire pump according to claim 1, characterized in that: The dynamic impeller (2) is provided with five water guide blades.

6. A small fire pump according to claim 1, characterized in that: The pump housing (1) is provided with a water outlet, and the pump outer cover (3) is provided with a water inlet.

7. A small fire pump according to claim 1, characterized in that: A sealing strip is clamped inside the sealing groove (6).

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