Fire pump

Abstract

The fire pump comprises an engine, a water suction pump, an oil tank, an engine oil tank and a vacuum pump, the oil tank and the engine oil tank are respectively connected with the engine through pipelines, the engine is in transmission connection with the water suction pump, the vacuum pump is installed on the side portion of the water suction pump, a cylinder body of the engine is obliquely arranged, and a piston in the cylinder body is obliquely arranged. The vacuum pump comprises a pump body and an impeller, the impeller is rotatably installed in the pump body through an impeller shaft, the impeller shaft and the pump body are directly provided with a bearing, the outer wall of the pump body is provided with a filler groove, the filler groove is filled with flowable lubricating grease, and the filler groove leads to the bearing through a channel. The filling groove is filled with a certain amount of lubricating grease, so that the adding time of the lubricating grease can be prolonged, meanwhile, the cylinder body of the engine is obliquely placed, vibration in the horizontal direction and the vertical direction is balanced, the vibration of the engine is remarkably restrained, and the technical effects of small vibration and long-time lubricating grease supply are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of water pump, concretely relates to a fire water pump. BACKGROUND

[0002] Fire pump refers to special fire pump or ordinary water pump reaching national standard "fire pump performance requirement and test method" GB 6245. Most of the fire water provided by the fire source needs the fire water pump to pressurize to meet the requirement of water pressure and water quantity when extinguishing the fire.

[0003] The structure of the traditional fire water pump includes engine, water pump, vacuum pump and cooling system, the cooling system cools the engine, the vacuum pump is installed on the side of the water pump and is mainly used for vacuum extraction of the output end of the water pump, otherwise it will cause the water pump to fail to pump water, and the impeller in the vacuum pump is installed on the impeller shaft to rotate, the impeller shaft and the pump body of the vacuum pump are connected through the bearing, in high-speed operation, the bearing wears and accelerates, and it is necessary to add lubricating grease regularly, otherwise the bearing will be damaged, and the operation of adding lubricating grease is very troublesome and dangerous.

[0004] At the same time, the traditional water pump engine is vertically placed, so that the piston in the cylinder body moves vertically up and down, and the up and down vibration after starting is very large, which causes the water pump to be unstable and affects the use of the water pump. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model aims at providing a fire water pump with small vibration and long-term lubricating grease supply.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a fire water pump, comprising an engine, a water pump and a vacuum pump, the engine is in transmission connection with the water pump, the vacuum pump is installed on the side of the water pump, the cylinder body of the engine is placed obliquely, the piston in the cylinder body is arranged in an oblique direction, the vacuum pump comprises a pump body and an impeller, the impeller is rotatably installed in the pump body through an impeller shaft, the impeller shaft and the pump body are directly provided with a bearing, a filler groove is arranged on the outer wall of the pump body, the filler groove is filled with flowable lubricating grease, and the filler groove is connected to the bearing through a channel.

[0007] The bottom of the filler groove is in a conical shape, and a cover is arranged at the opening of the filler groove.

[0008] The output shaft of the vacuum pump is provided with a first belt pulley, the output shaft of the engine is provided with a second belt pulley, the first belt pulley and the second belt pulley are connected through a belt, a reset cylinder is arranged on the outer wall of the vacuum pump, a swing arm is rotatably arranged on the outer wall of the reset cylinder, one end of the swing arm is provided with a rotatable support, a tension pulley is arranged on the support, the tension pulley is used for tensioning the belt, a tension spring is arranged between the support and the swing arm, the reset cylinder is provided with a retracting piston rod, the inner end of the retracting piston rod is provided with a piston sheet, the piston sheet is arranged in the reset cylinder, a spring is arranged between the piston sheet and the inner wall of the reset cylinder, the outer end of the retracting piston rod is in transmission connection with the swing arm, and a handle is further arranged on the swing arm.

[0009] The cooling system of the engine further comprises a heat exchanger, and the heat exchanger specifically comprises two heat conduction chambers.

[0010] The outlet end of the water pump is provided with a ball valve.

[0011] The beneficial effects of the utility model are as follows: a certain amount of lubricating grease is filled in the filler groove, so that the adding time of the lubricating grease is prolonged, the service life of the bearing is ensured, the cylinder body of the engine is placed obliquely, the piston in the engine moves in an oblique direction, the vibration in the horizontal direction and the vertical direction is balanced, the vibration of the engine is obviously inhibited, and the technical effects of small vibration and long-time lubricating grease supply are achieved.

[0012] The utility model will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model is a three-dimensional specific embodiment Figure 1 ;

[0014] Figure 2 The utility model is a three-dimensional specific embodiment Figure 2 ;

[0015] Figure 3 The utility model is a three-dimensional specific embodiment

[0016] Figure 4 The utility model is a three-dimensional specific embodiment

[0017] In the drawing, 1 is an engine, 2 is a water pump, 3 is an oil tank, 4 is an oil tank, 5 is a vacuum pump, 6 is a bearing, 7 is a filler groove, 8 is a cooling system, 9 is a belt, 10 is a reset cylinder, 20 is a swing arm, 30 is a support, 40 is a tension pulley, 50 is a tension spring, 60 is a handle, and 81 is a heat exchanger. DETAILED DESCRIPTION

[0018] The present invention will be specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] like Figure 1 — Figure 4 As shown, this embodiment discloses a fire pump, including an engine 1, a water pump 2, an oil tank 3, an oil tank 4, and a vacuum pump 5. The oil tank 3 and the oil tank 4 are respectively connected to the engine 1 through pipes. The engine 1 is drivenly connected to the water pump 2. The vacuum pump 5 is installed on the side of the water pump 2. The cylinder of the engine 1 is placed at an angle, and the piston in the cylinder is arranged in an angled direction. The vacuum pump 5 includes a pump body and an impeller. The impeller is rotatably installed in the pump body through an impeller shaft. A bearing 6 is directly provided between the impeller shaft and the pump body. A packing groove 7 is provided on the outer wall of the pump body. The packing groove 7 is filled with flowable grease, and the packing groove 7 leads to the bearing 6 through a channel.

[0020] The bottom of the packing groove 7 is conical, and a cover is provided at the opening of the packing groove 7. A certain amount of flowable grease can be placed in the packing groove 7, so that the bearing 6 can be lubricated for a long time and ensure that the bearing 6 will not be worn.

[0021] A first pulley is mounted on the output shaft of the vacuum pump 5, and a second drive pulley is mounted on the output shaft of the engine 1. The first and second drive pulleys are connected by a belt 9. A reset cylinder 10 is mounted on the outer wall of the vacuum pump 5. A rotatable swing arm 20 is mounted on the outer wall of the reset cylinder 10. A rotatable bracket 30 is mounted on one end of the swing arm 20. A tension wheel 40 is mounted on the bracket 30 for tensioning the belt 9. A tension spring 50 is arranged between the bracket 30 and the swing arm 20. The reset cylinder 10 has a retractable piston rod 101. A piston plate is arranged on the inner end of the retractable piston rod 101. The piston plate is placed inside the reset cylinder 10. A spring is arranged between the piston plate and the inner wall of the reset cylinder 10. The outer end of the retracting piston rod 101 is connected to the swing arm 20. A handle 60 is also installed on the swing arm 20. The handle 60 can drive the swing arm 20 to swing and tighten the tension wheel 40 to the belt 9, so that the vacuum pump 5 drives the engine 1 to start. The reset cylinder 10 and the tension spring 50 can reset the tension wheel 40. The reset cylinder 10 contains oil, so the reset progress is slow. After the vacuum pump 5 completes the start of the engine 1, the tension wheel 40 slowly resets, loosens the belt 9, and then the vacuum pump 5 can stop running.

[0022] The cooling system 8 of the engine 1 comprises a heat exchanger 81, which specifically comprises two heat conducting chambers, the inlets and outlets of one heat conducting chamber are connected with the engine 1 through pipes, and the inlets and outlets of the other heat conducting chamber are connected with a cooling water circuit, which comprises a water pump and a water tank, the water pump is installed at the outlet of the water tank, and the inlets and outlets of the water tank are connected with the inlets and outlets of the other heat conducting chamber.

[0023] The outlet end of the water pump 2 is provided with a ball valve 70, so that the water output of the water pump 2 can be controlled.

[0024] By adopting the above technical scheme, a certain amount of lubricating grease is filled in the filler groove 7, so that the adding time of the lubricating grease is prolonged, the service life of the bearing 6 is ensured, the cylinder body of the engine 1 is placed in an inclined manner, the piston in the engine 1 moves in an inclined direction, the vibration in the horizontal direction and the vertical direction is balanced, the vibration of the engine 1 is significantly inhibited, and the technical effects of small vibration and long-time lubricating grease supply are achieved.

[0025] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0026] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fire pump comprising an engine, a water pump and a vacuum pump, the engine being drivingly connected to the water pump, the vacuum pump being mounted to a side of the water pump, characterised in that: The engine is placed in a cylinder body, and a piston in the cylinder body is placed in a slanting direction, the vacuum pump comprises a pump body and an impeller, the impeller is rotatably installed in the pump body through an impeller shaft, the impeller shaft and the pump body are directly provided with bearings, a filler groove is arranged on the outer wall of the pump body, and flowable lubricating grease is filled in the filler groove, and the filler groove is connected to the bearings through a channel.

2. The fire pump of claim 1, wherein: The bottom of the filler groove is in a conical shape, and a cover is arranged at the opening of the filler groove.

3. The fire pump of claim 1, wherein: A first belt pulley is installed on the output shaft of the vacuum pump, a second belt pulley is installed on the output shaft of the engine, the first belt pulley and the second belt pulley are connected through a belt, a reset cylinder is installed on the outer wall of the vacuum pump, a rotatable swing arm is arranged on the outer wall of the reset cylinder, one end of the swing arm is provided with a rotatable support, a tension pulley is installed on the support, the tension pulley is used for tensioning the belt, a tension spring is arranged between the support and the swing arm, the reset cylinder is provided with a retracting piston rod, an inner end of the retracting piston rod is provided with a piston sheet, the piston sheet is arranged in the reset cylinder, a spring is arranged between the piston sheet and the inner wall of the reset cylinder, an outer end of the retracting piston rod is in transmission connection with the swing arm, and a handle is further installed on the swing arm.

4. The fire pump of claim 1, wherein: The cooling system of the engine further comprises a heat exchanger, and the heat exchanger specifically comprises two heat conduction chambers, the inlet and outlet of one heat conduction chamber are connected with the engine through pipelines, and the inlet and outlet of the other heat conduction chamber are connected with a cooling water channel through pipelines.

5. The fire pump of claim 1, wherein: The outlet end of the water pump is provided with a ball valve.

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