Fire extinguishing water pump for fire fighting

Abstract

The utility model provides a fire extinguishing water pump for fire fighting, which comprises a water pump with a water inlet pipe, an impurity filtering device is arranged at the inlet of the water inlet pipe, the impurity filtering device comprises a folding bag, a hard ring and a guide rod, the hard ring is arranged at the top of the folding bag, the hard ring is detachably arranged at the inlet of the water inlet pipe, and the guide rod is arranged at the top of the folding bag. The folding bag is provided with wavy-line-shaped creases in the length direction of the folding bag, the guide rod is arranged on the hard ring and extends in the length direction of the folding bag, a guide sleeve is arranged on each protruding portion of the outer creases of the folding bag, and the multiple guide sleeves are arranged on the guide rod in a sleeving mode. In a normal state, the folding bag is in a flat folded state under the assistance of the spring, when impurities in the folding bag are increased, the impurities and water pressure can drive the folding bag to be unfolded, compared with a plane-shaped filter screen, the impurity storage amount of the folding bag is greatly increased, even if the bottom of the folding bag is full of the impurities and water, the folding bag can pass through the side portion of the folding bag, and blocking is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting facilities, in particular to a fire-fighting water pump for extinguishing fires. Background Technique

[0002] A fire-fighting water pump refers to a special fire-fighting water pump or a common clean water pump that meets the national standard "Performance Requirements and Test Methods for Fire Pumps" GB6245. The fire-fighting water pump has the advantages of good flexibility and convenient operation, and is widely used in fire fighting.

[0003] Due to the complex fire-fighting environment, when the fire truck arrives at the incident site, one way is to draw water from the water tank of the fire truck, and the other is to draw water from a nearby pond or river. However, there are many impurities in open water sources such as rivers or ponds. Currently, the filter screen set at the water inlet end of the water pump is usually a flat filter screen. The flat filter screen will be blocked quickly when a certain amount of impurities accumulates, affecting the water outlet pressure of the water pump and being unfavorable for fire fighting. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a fire-fighting water pump for extinguishing fires, which solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A fire-fighting water pump for extinguishing fires includes a water pump with a water inlet pipe. An impurity filtering device is provided at the inlet of the water inlet pipe. The impurity filtering device includes a folding bag, a rigid ring, and a guide rod. The rigid ring is arranged at the top of the folding bag. The rigid ring is detachably installed at the inlet of the water inlet pipe. The folding bag is provided with wavy creases along its length direction. The guide rod is arranged on the rigid ring and extends along the length direction of the folding bag. Guide sleeves are arranged on each protruding part of the outer crease of the folding bag. A number of guide sleeves are sleeved on the guide rod. Dense filter holes are formed on the bag body of the folding bag.

[0008] Preferably, a top plate is arranged at the bottom end of the guide rod, and a spring is arranged between the last guide sleeve and the top plate outside the guide rod.

[0009] Preferably, clamping blocks are symmetrically arranged on both sides of the rigid ring. A clamping groove for the clamping blocks to be inserted into is provided at the inlet of the water inlet pipe, and a limiting pin is hinged at the entrance of the clamping groove.

[0010] Preferably, a C-shaped elastic sheet is arranged at the bottom of the clamping groove.

[0011] Preferably, each section of the wavy crease outside the folding bag is in the shape of a regular isosceles trapezoid.

[0012] Preferably, the water inlet pipe is connected to the water inlet hose through an interface.

[0013] (III) Beneficial effects

[0014] The utility model provides a fire-fighting water pump. It has the following beneficial effects:

[0015] 1. For this fire-fighting water pump, under normal conditions, the folding bag is in a flat and retracted state with the assistance of a spring. When the impurities in the folding bag increase, the impurities and water pressure will drive the folding bag to unfold. Compared with a flat filter screen, the impurity storage capacity of the folding bag is greatly improved. Even if the bottom of the folding bag is filled with impurities, water can still pass through the side of the folding bag and is not easily blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an external axonometric view of the water pump of the utility model;

[0017] Figure 2 is a schematic diagram of the impurity filtering device of the utility model;

[0018] Figure 3 is a cross-sectional view of the water inlet pipe of the utility model.

[0019] In the figure: 1 water pump, 2 water inlet pipe, 3 base, 4 folding bag, 5 rigid ring, 6 clamping block, 7 clamping groove, 8 limit pin, 9 guide rod, 10 guide sleeve, 11 top plate, 12 spring, 13 filter hole, 14 interface, 15 C-shaped elastic piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] An embodiment of the utility model provides a fire-fighting water pump, which includes a water pump 1 with a water inlet pipe 2. The water inlet pipe 2 is connected to a water inlet hose through an interface 14. Bolt holes for connecting to the water inlet hose are provided on the outer ring of the interface 14. Water is taken through the water inlet hose extending to the water source. The above is the prior art.

[0021] Such as Figures 1-3As shown in the figure, an impurity filtering device is provided at the inlet of the water inlet pipe 2. The impurity filtering device includes a folding bag 4, a rigid ring 5, and a guide rod 9. The rigid ring 5 is provided at the top of the folding bag 4, and the rigid ring 5 is detachably installed at the inlet of the water inlet pipe 2. The folding bag 4 is made of rubber material. The folding bag 4 is provided with wavy creases along its length direction, and each section of the wavy creases outside the folding bag 4 is in the shape of a regular isosceles trapezoid. Dense filter holes 13 are provided at the bottom and on the bag body of the folding bag 4. Under normal conditions, the folding bag 4 is in a flat and folded state. When the impurities in the folding bag 4 increase, the impurities and water pressure will drive the folding bag 4 to unfold, greatly increasing the impurity storage capacity of the folding bag 4. Even if the bottom of the folding bag 4 is filled with impurities, water can still pass through the side of the folding bag 4 and is not easily blocked.

[0022] The guide rod 9 is provided on the rigid ring 5 and extends along the length direction of the folding bag 4. The length of the guide rod 9 is the maximum length when the folding bag 4 is unfolded. A guide sleeve 10 is provided on each convex part of the outer crease of the folding bag 4, and several guide sleeves 10 are sleeved on the guide rod 9. By providing the guide rod 9, the folding bag 4 can be unfolded or folded regularly when being retracted and extended, preventing the folding bag 4 from being washed into a mess.

[0023] In order to make the folding bag 4 in a folded state without water pressure, a top plate 11 is provided at the bottom end of the guide rod 9, and a spring 12 is provided between the last guide sleeve 10 and the top plate 11 outside the guide rod 9. By squeezing several guide sleeves 10 with the spring 12, the folding bag 4 is folded.

[0024] Clamping blocks 6 are symmetrically provided on both sides of the rigid ring 5, and clamping grooves 7 for the clamping blocks 6 to be inserted into are provided at the inlet of the water inlet pipe 2. A limiting pin 8 is damping-hinged at the inlet edge of the clamping groove 7. After the limiting pin 8 rotates, it can cover the clamping groove 7, thereby restricting the clamping block 6 in the clamping groove 7.

[0025] As Figure 3 shown, in order to facilitate the removal of the folding bag 4, a C-shaped elastic sheet 15 is provided at the bottom of the clamping groove 7, and the C-shaped elastic sheet 15 is made of a metal material with plastic elasticity. When the clamping block 6 enters the clamping groove 7, its bottom presses the C-shaped elastic sheet 15 to deform it. When the folding bag 4 is to be removed later, after the limiting pin 8 is moved away, the C-shaped elastic sheet 15 can push the clamping block 6 upwards, facilitating the removal of the folding bag 4.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire-fighting water pump, comprising a water pump (1) with a water inlet pipe (2), characterized in that: An impurity filtering device is arranged at the inlet of the water inlet pipe (2), and the impurity filtering device comprises a folding bag (4), a hard ring (5), and a guide rod (9). The hard ring (5) is arranged at the top of the folding bag (4), and the hard ring (5) is detachably installed at the inlet of the water inlet pipe (2). The folding bag (4) is provided with a wavy fold along its length direction. The guide rod (9) is arranged on the hard ring (5) and extends along the length direction of the folding bag (4). A guide sleeve (10) is arranged on each protruding part of the outer fold of the folding bag (4), and a plurality of guide sleeves (10) are sleeved on the guide rod (9). The bag body of the folding bag (4) is provided with dense filter holes (13).

2. A fire-fighting water pump according to claim 1, characterized in that: A top plate (11) is provided at the bottom end of the guide rod (9), and a spring (12) is provided outside the guide rod (9) between the last guide sleeve (10) and the top plate (11).

3. A fire-fighting water pump according to claim 1, characterized in that: Clamping blocks (6) are symmetrically arranged on both sides of the hard ring (5), a clamping groove (7) for the clamping block (6) to be clamped is arranged at the inlet of the water inlet pipe (2), and a limit pin (8) is hinged at the inlet of the clamping groove (7).

4. A fire-fighting water pump according to claim 3, characterized in that: A C-shaped spring sheet (15) is provided at the bottom of the slot (7).

5. A fire-fighting water pump according to claim 1, characterized in that: Each section of the wavy line folds outside the folding bag (4) is in a regular isosceles trapezoidal shape.

6. A fire-fighting water pump according to claim 1, characterized in that: The water inlet pipe (2) is connected to a water inlet hose via an interface (14).

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