Water replenishing device for fire fighting truck

Abstract

The utility model relates to a water replenishing device for a fire fighting truck. The water replenishing device comprises a water replenishing assembly and a floating piece used for enabling the water replenishing assembly to float on the water surface of a water source. The water supplementing assembly comprises an upper end cover used for being connected with a water supplementing pipe of the fire fighting truck, a lower end cover connected with the upper end cover and an impeller set arranged between the upper end cover and the lower end cover. And a nozzle is arranged on the upper end cover. Wherein the nozzle is configured to be capable of spraying water flow towards the impeller set to enable the impeller set to rotate, so that the impeller set can convey water in the water source into the water supplementing pipe. The water replenishing device can be used independently and can also be used together with a pump of the fire fighting truck, so that the limitation of water replenishing of the fire fighting truck in the field is reduced. In addition, the water replenishing device and a pump of the fire fighting truck are used for replenishing water together, and the water replenishing efficiency of the fire fighting truck can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a water replenishing device for a fire fighting truck. Background Art

[0002] At present, conventional water replenishment methods for fire trucks include replenishing water through municipal fire hydrants, replenishing water from surface water sources through water pumps, and replenishing water through fire cranes. Among them, municipal fire hydrants and fire cranes are only set up in urban areas. Therefore, fire trucks can only draw water from rivers and lakes on the surface through water pumps in the wild. Fire trucks can draw water from surface water sources in the wild through pumps or motor pumps. However, the self-priming height of the fire truck pump is generally 7 meters. If the vertical distance between the water source and the fire truck exceeds 7 meters, the fire truck pump will not be able to inhale water. It takes at least 2 firefighters to operate the motor pump to draw water, which seriously consumes the limited firefighting capacity. And the motor pump needs to be maintained frequently to ensure that the motor pump can work normally at critical moments. In addition, due to the low temperature in winter, it is difficult to start the motor pump. Therefore, in the prior art, the limitations of fire trucks in replenishing water in the wild are large, and the operation process is relatively complicated. Utility Model Content

[0003] Based on the above problems existing in the prior art, the utility model provides a water replenishing device for a fire truck, which can reduce the limitations of water replenishing of the fire truck in the field and improve the water replenishing efficiency of the fire truck.

[0004] The utility model adopts a technical solution to solve the technical problem: to provide a water replenishing device for a fire truck, comprising:

[0005] a water supply assembly, comprising an upper end cover for connecting to a water supply pipe of the fire truck, a lower end cover connected to the upper end cover, and an impeller assembly arranged between the upper end cover and the lower end cover, wherein the upper end cover is provided with a nozzle; and

[0006] A floating member connected to the water replenishment assembly so that the water replenishment assembly floats on the surface of the water source,

[0007] The nozzle is configured to spray water toward the impeller assembly to rotate the impeller assembly, so that the impeller assembly can transport water from the water source to the water supply pipe.

[0008] Furthermore, the impeller assembly includes a rotating shaft rotatably connecting the upper end cover and the lower end cover, a water replenishment impeller arranged on the rotating shaft, and a driving impeller arranged along the circumferential direction of the water replenishment impeller.

[0009] Wherein, the water supply impeller is configured to be able to rotate after the nozzle sprays water toward the driving impeller, so as to transport water in the water source to the water supply pipe.

[0010] Furthermore, the blades of the water supply impeller are inclined in the opposite direction to the blades of the driving impeller, so that the water supply impeller can transport water in the water source to the water supply pipe in an axially upward direction when the nozzle sprays water in an axially downward direction toward the driving impeller.

[0011] Furthermore, a connecting piece is provided between the driving impeller and the water supply impeller, and the connecting piece extends toward the upper end cover so as to prevent the water flow ejected from the nozzle from flowing to the top of the water supply impeller after impacting the driving impeller.

[0012] Furthermore, a partition in contact with the connecting piece is provided on the upper end cover, and the partition and the connecting piece together prevent the water flow ejected from the nozzle from flowing to the top of the water supply impeller after impacting the driving impeller.

[0013] Furthermore, a water outlet and a water inlet opposite to the water replenishment impeller are respectively formed on the upper end cover and the lower end cover, and both ends of the rotating shaft are rotatably connected to an upper support in the water outlet and a lower support in the water inlet.

[0014] Furthermore, a plurality of connecting ribs are provided in the water outlet and the water inlet, the upper support is connected to the upper end cover via the connecting ribs, and the lower support is also connected to the lower end cover via the connecting ribs.

[0015] Furthermore, bearings are provided at both ends of the rotating shaft for rotatably connecting the upper support and the lower support.

[0016] Furthermore, a connecting portion is provided on the upper end cover for connecting the water supply pipe.

[0017] Furthermore, a water replenishment chamber for accommodating the impeller assembly is jointly defined between the upper end cover and the lower end cover.

[0018] The beneficial effects of the utility model are as follows: the utility model provides a water replenishing device for a fire truck, comprising a water replenishing assembly and a floating member for making the water replenishing assembly float on the water surface of a water source. The water replenishing assembly comprises an upper end cover for connecting the water replenishing pipe of the fire truck, a lower end cover connected to the upper end cover, and an impeller group arranged between the upper end cover and the lower end cover. A nozzle is arranged on the upper end cover. The nozzle is configured to spray water toward the impeller group to rotate the impeller group so that the impeller group can transport water from the water source to the water replenishing pipe. The water replenishing device can be used alone or together with the pump of the fire truck to reduce the limitations of the fire truck in replenishing water in the field. Moreover, the water replenishing device replenishes water together with the pump of the fire truck, which can improve the water replenishing efficiency of the fire truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 Shown is a structural cross-sectional view of a water replenishing device for a fire truck.

[0021] Figure 2 Shown is a schematic diagram of the planar structure of the upper end cover.

[0022] Figure 3 Shown is a schematic diagram of the planar structure of the lower end cover.

[0023] Figure 4 Shown is a schematic diagram of the planar structure of the impeller group.

[0024] Among them, the reference numerals in the figure are: 100, water replenishment device; 10, water replenishment assembly; 11, upper end cover; 111, water outlet; 112, upper support; 113, connecting rib; 114, installation port; 115, nozzle; 116, connecting part; 117, partition; 12, lower end cover; 121, water inlet; 122, lower support; 123, guide plate; 13, impeller group; 131, rotating shaft; 132, water replenishment impeller; 133, connecting piece; 134, driving impeller; 135, bearing; 14, water replenishment chamber;

[0025] 20. Floating parts. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is now described in detail in conjunction with the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the composition related to the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] refer to Figure 1As shown, the utility model provides a water replenishment device 100 for a fire truck, comprising a water replenishment assembly 10 for taking water from a surface water source, and a floating member 20 installed on the water replenishment assembly 10. The water replenishment assembly 10 is configured to form a pressure difference at the pipe mouth of the water replenishment pipe (not shown in the figure) of the fire truck, so that the water in the surface water source is sucked into the water replenishment pipe. If the vertical distance between the fire truck and the water source is less than the maximum head of the water replenishment assembly 100, the water replenishment device 100 can directly transport the water in the water source to the water tank of the fire truck through the water replenishment pipe. If the vertical distance between the water source and the fire truck is greater than the maximum head, but less than the sum of the maximum head and the self-priming height of the pump of the fire truck, the water replenishment device 100 can transport the water in the water source to the water tank of the fire truck through the water replenishment pipe together with the pump of the fire truck.

[0028] This enables the fire truck to draw water from a water source whose vertical distance exceeds the self-priming height, thereby reducing the limitations of the fire truck in replenishing water in the field. Moreover, even if the fire truck draws water from a water source whose vertical distance is less than the self-priming height, the water replenishing device 100 can assist the pump of the fire truck to draw water, thereby improving the water intake efficiency of the fire truck.

[0029] The floating member 20 is configured to ensure that the water replenishment assembly 10 floats on the surface of the surface water source, thereby preventing the water replenishment assembly 10 from sinking to the bottom of the water and sucking underwater mud and sand into the water tank of the fire truck.

[0030] In some embodiments, the self-priming height of the pump of the fire truck is 7m.

[0031] Combination Figure 1 As shown, in some embodiments, the water replenishment assembly 10 includes an upper end cover 11 for connecting the water replenishment pipe, a lower end cover 12 for being immersed in water, and an impeller assembly 13 rotatably connected between the upper end cover 11 and the lower end cover 12. The upper end cover 11 and the lower end cover 12 jointly define a water replenishment chamber 14 for accommodating the impeller assembly 13. In some embodiments, the impeller assembly 13 can form a pressure difference between the upper space and the lower space of the water replenishment chamber 14 during the rotation process, so that the water in the surface water source can enter the water replenishment pipe through the lower end cover 12, the water replenishment chamber 14 and the upper end cover 11 in sequence.

[0032] refer to Figure 2As shown, in some embodiments, the upper end cover 11 is provided with a water outlet 111 for connecting the water replenishment chamber 14 and the water replenishment pipe, and a mounting port 114 is provided next to the water outlet 111 and used to install the nozzle 115. An upper support 112 for installing the impeller assembly 13 is provided in the water outlet 111, and the upper support 112 is connected to the upper end cover 11 through a connecting rib 113. The input end of the nozzle 115 is connected to the pressurizing device of the fire truck through a high-pressure pipeline, and the output end of the nozzle 115 faces the impeller assembly 13. In some embodiments, the pressurizing device can pressurize the remaining water in the water tank of the fire truck and then transport it to the nozzle 115 through the high-pressure pipeline, so that the nozzle 115 sprays a high-speed water flow to the impeller assembly 13, thereby driving the impeller assembly 13 to rotate.

[0033] In this embodiment, the shape of the water outlet 111 is circular. The upper support 112 in the water outlet 111 is connected to the upper end cover 11 through four connecting ribs 113 evenly arranged in the circumferential direction. Two installation openings 114 are provided, and the two installation openings 114 are symmetrically arranged on both sides of the water outlet 111.

[0034] Combination Figure 1 As shown, in some preferred embodiments, a connection portion 116 is further provided on the side of the upper end cover 11 away from the water replenishment chamber 14 for connecting the water replenishment pipe. The connection portion 116 surrounds the circumferential edge of the water outlet 111 to ensure that the water replenishment pipe and the water outlet 111 are completely connected.

[0035] refer to Figure 1 and Figure 3 As shown, in some embodiments, a water inlet 121 opposite to the water outlet 111 is provided on the lower end cover 12. A lower support 122 opposite to the upper support 112 is provided in the water inlet 121, and the lower support 122 is also connected to the lower end cover 12 through a connecting rib 113. In this embodiment, the shape of the water inlet 121 is also circular. The lower support 122 in the water inlet 121 is also connected to the lower end cover 12 through four connecting ribs 113 evenly arranged in the circumferential direction.

[0036] Combination Figure 1 As shown, in some preferred embodiments, a guide plate 123 is further provided on the side of the lower end cover 12 facing away from the water replenishment chamber 14 to guide water in the water source into the water replenishment chamber 14 from the water inlet 121 .

[0037] In some embodiments not shown, a filter is further provided at the water inlet 121 of the lower end cover 12 for filtering impurities in the water.

[0038] In this embodiment, bolts are used to connect the upper end cover 11 and the lower end cover 12. In other embodiments not shown, the upper end cover 11 and the lower end cover 12 may also be connected by bonding, riveting or clamping.

[0039] refer to Figure 1 and Figure 4 As shown, in some embodiments, the impeller assembly 13 includes a rotating shaft 131 rotatably connected to the upper support 112 and the lower support 122, a water replenishment impeller 132 disposed on the rotating shaft 131, and a driving impeller 134 arranged around the water replenishment impeller 132. The water replenishment impeller 132 and the driving impeller 134 are connected by an annular connecting member 133. The water replenishment impeller 132 is disposed opposite to the water outlet 111 and the water inlet 121, and the driving impeller 134 is directly opposite to the output end of the nozzle 115.

[0040] In some embodiments, the nozzle 115 sprays high-speed water flow on the blades of the driving impeller 134 to rotate the impeller assembly 13. In the process of driving the impeller 134 to drive the rotating shaft 131 to rotate through the connecting piece 133 and the blades of the water replenishment impeller 132, the blades of the water replenishment impeller 132 generate a pressure difference between the upper space and the lower space of the water replenishment chamber 14, so that water can flow into the water replenishment chamber 14 from the water inlet 121 and then flow out from the water outlet 111. The high-speed water flow sprayed by the nozzle 115 will flow to the bottom of the impeller assembly 13 after the driving impeller assembly 13 rotates, and then flow into the water replenishment pipe from the water outlet 111 under the action of the pressure difference.

[0041] In this embodiment, the blades of the driving impeller 134 and the blades of the water replenishment impeller 132 are inclined in opposite directions. The nozzle 115 installed on the upper end cover 11 sprays a high-speed water flow toward the blades of the driving impeller 134 in an axially downward direction, so that the water replenishment impeller 132 can transport the water in the water source to the water replenishment pipe in an axially upward direction. In some other embodiments not shown, the nozzle 115 is arranged on the lower end cover 12, and the blades of the driving impeller 134 and the blades of the water replenishment impeller 132 have the same inclination direction. In this way, the nozzle 115 can spray a high-speed water flow toward the blades of the driving impeller 134 in an axially upward direction, so that the water replenishment impeller 132 can transport the water in the water source to the water replenishment pipe in an axially upward direction.

[0042] In some preferred embodiments, bearings 135 are installed at both ends of the rotating shaft 131 to reduce the friction resistance between the rotating shaft 131 and the upper support 112 and the lower support 122. In this way, the high-speed water flow sprayed by the nozzle 115 can effectively drive the impeller assembly 13 to rotate.

[0043] In some preferred embodiments, the number of blades of the driving impeller 134 is greater than the number of blades of the water supply impeller 132. In this way, the high-speed water flow sprayed by the nozzle 115 can effectively impact the blades of the driving impeller 134, thereby improving the driving efficiency of the impeller assembly 13.

[0044] In some preferred embodiments, the upper end cover 11 is further provided with an annular partition 117 on one side of the water replenishment chamber 14, and the partition 117 extends toward the impeller assembly 13. The annular connector 133 between the water replenishment impeller 132 and the driving impeller 134 extends toward the upper end cover 11 so as to contact the partition 117. After impacting the blades of the driving impeller 134, the high-speed water flow first flows to the bottom of the water replenishment impeller 132, and then flows to the top of the water replenishment impeller 132 together with the water in the surface water source under the action of the water replenishment impeller 132. In this way, it can be avoided that the high-speed water flow directly flows to the top of the water replenishment impeller 132 after impacting the driving impeller 134, thereby affecting the flow state of the water flow above the water replenishment impeller 132, thereby improving the water replenishment efficiency of the impeller assembly 13.

[0045] In this embodiment, the outer wall of the connecting member 133 contacts the inner wall of the partition 117. The partition 117 can limit the connecting portion 113, so that the impeller assembly 13 rotates more smoothly, thereby ensuring that the water supply impeller 132 can more effectively transport water from the water source to the water supply pipe.

[0046] Reference again Figure 1 As shown, in some embodiments, the floating member 20 is generally annular in shape surrounding the circumferential side wall of the water replenishment assembly 10. The floating member 20 is hollow inside, so that the overall density of the water replenishment device 100 is less than the density of water, so as to ensure that the water replenishment device 100 can float on the water surface.

[0047] Combination Figure 1-4 As shown, the use process of a water replenishment device 100 for a fire truck provided by the present invention is as follows. After placing the water replenishment device 100 on the water surface of the water source, the pressurizing device of the fire truck pressurizes the remaining water in the water tank and transports it to the nozzle 115 through the high-pressure pipeline. The nozzle 115 sprays a high-speed water flow to impact the blades of the driving impeller 134 of the impeller group 13, thereby rotating the impeller group 13. During the rotation process, the water replenishment impeller 132 of the impeller group 13 generates a pressure difference between the lower space and the upper space of the water replenishment chamber 14, so that the water in the water source can enter the water replenishment chamber 14 from the water inlet 121 of the lower end cover 12, and then enter the water replenishment pipe from the water outlet 111 of the upper end cover 11.

[0048] In some embodiments, when the driving force of the high-speed water flow sprayed from the nozzle 115 on the impeller assembly 13 is equal to the water flow resistance of the impeller assembly 13, the rotation speed of the impeller assembly 13 is the maximum rotation speed. At this time, the head of the water replenishment device 100 is the maximum head. If the vertical distance between the water source and the fire truck is less than the maximum head, the water replenishment device 100 can directly transport the water in the water source to the water tank of the fire truck through the water replenishment pipe. If the vertical distance between the water source and the fire truck is greater than the maximum head, but less than the sum of the maximum head and the self-priming height of the pump of the fire truck, the water replenishment device 100 can transport the water in the water source to the water tank of the fire truck through the water replenishment pipe together with the pump of the fire truck.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A water replenishing device for a fire truck, characterized in that: include, A water supply assembly (10), comprising an upper end cover (11) for connecting to a water supply pipe of the fire truck, a lower end cover (12) connected to the upper end cover (11), and an impeller assembly (13) arranged between the upper end cover (11) and the lower end cover (12), wherein the upper end cover (11) is provided with a nozzle (115); and a floating member (20) connected to the water replenishment assembly (10) so that the water replenishment assembly (10) floats on the surface of the water source, The nozzle (115) is configured to spray water toward the impeller assembly (13) to rotate the impeller assembly (13), so that the impeller assembly (13) can transport water from the water source to the water supply pipe.

2. The water replenishing device for a fire truck according to claim 1, characterized in that: The impeller assembly (13) comprises a rotating shaft (131) rotatably connecting the upper end cover (11) and the lower end cover (12), a water supply impeller (132) arranged on the rotating shaft (131), and a driving impeller (134) arranged along the circumferential direction of the water supply impeller (132). The water supply impeller (132) is configured to rotate after the nozzle (115) sprays water toward the driving impeller (134), so as to transport water in the water source to the water supply pipe.

3. The water replenishing device for a fire truck according to claim 2, characterized in that: The blades of the water replenishment impeller (132) are inclined in the opposite direction to the blades of the driving impeller (134), so that the water replenishment impeller (132) can transport water in the water source to the water replenishment pipe in an axially upward direction when the nozzle (115) sprays water in an axially downward direction toward the driving impeller (134).

4. The water replenishing device for a fire truck according to claim 3, characterized in that: A connecting piece (133) is provided between the driving impeller (134) and the water replenishing impeller (132), and the connecting piece (133) extends in the direction of the upper end cover (11) so as to prevent the water flow sprayed by the nozzle (115) from flowing to the upper part of the water replenishing impeller (132) after impacting the driving impeller (134).

5. The water replenishing device for a fire truck according to claim 4, characterized in that: The upper end cover (11) is provided with a partition (117) in contact with the connecting piece (133), and the partition (117) and the connecting piece (133) jointly block the water flow sprayed by the nozzle (115) from flowing to the top of the water supply impeller (132) after impacting the driving impeller (134).

6. The water replenishing device for a fire truck according to claim 2, characterized in that: The upper end cover (11) and the lower end cover (12) are respectively provided with a water outlet (111) and a water inlet (121) opposite to the water replenishment impeller (132), and two ends of the rotating shaft (131) are rotatably connected to an upper support (112) in the water outlet (111) and a lower support (122) in the water inlet (121).

7. The water replenishing device for a fire truck according to claim 6, characterized in that: A plurality of connecting ribs (113) are provided in the water outlet (111) and the water inlet (121); the upper support (112) is connected to the upper end cover (11) via the connecting ribs (113); and the lower support (122) is also connected to the lower end cover (12) via the connecting ribs (113).

8. The water replenishing device for a fire truck according to claim 6, characterized in that: Bearings (135) are provided at both ends of the rotating shaft (131) for rotatably connecting the upper support (112) and the lower support (122).

9. The water replenishing device for a fire truck according to any one of claims 1 to 8, characterized in that: The upper end cover (11) is provided with a connecting portion (116) for connecting the water supply pipe.

10. The water replenishing device for a fire truck according to any one of claims 1 to 8, characterized in that: The upper end cover (11) and the lower end cover (12) define a water replenishment chamber (14) for accommodating the impeller assembly (13).

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