CN219081861U

CN219081861U - Water pump

Info

Publication number: CN219081861U
Application number: CN202223499689.6U
Authority: CN
Inventors: 莫利波; 吴海军; 胡锐; 王晟竹
Original assignee: Zhejiang Rijing Pump Co ltd
Current assignee: Zhejiang Rijing Pump Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-26
Anticipated expiration: 2032-12-22

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to a water pump. The pump comprises a pump body, wherein a pump head, an impeller and a motor are arranged in the pump body, the pump head is fixedly connected to the motor, the output end of the motor is provided with the impeller, and the impeller is arranged in an impeller cavity at the lower part of the pump head; the pump head is provided with a first pipeline, a second pipeline is arranged above the first pipeline, the pump head, the first pipeline and the second pipeline are connected in a three-section combined structure, a cavity at the upper part of the pump head and a cavity in the first pipeline form a reflux cavity, and an air cavity is formed in the third pipeline; the three-way pipeline is provided with an interface in the same side direction with the motor, one end of the interface is provided with a gas tank, the interior of the gas tank is communicated with the air cavity through the interface, and the gas tank is arranged above the motor. The utility model aims to provide a water pump which can continuously work and has no clamping phenomenon of an impeller.

Description

Water pump

Technical Field

The utility model belongs to the technical field of water pumps, and particularly relates to a water pump.

Background

A water pump is a machine that delivers or pressurizes a liquid. It transmits mechanical energy or other external energy of prime mover to liquid to increase energy of liquid, and is mainly used for conveying liquid including water, oil, acid-alkali liquor, emulsion, suspension emulsion and liquid metal.

The pump body of the existing water pump generally consists of an impeller and a motor, the impeller is arranged in an impeller cavity in the pump body, when gas cannot be discharged outwards in the impeller cavity, the impeller runs, and water cannot be sucked from a water inlet because the pressure in the pump body is larger than that of the water inlet, so that the water pump cannot work normally; when the pressure in the pipe reaches a set value, the pressure switch of the existing water pump can stop rotating the motor of the water pump, and when the pressure in the pipe is reduced, the motor is started, but if a water source is lack of water, the flow rate in the pipe is not at all, and under the condition, the pressure switch can cause the motor to be started frequently, so that electric energy is wasted, and meanwhile, the pressure switch and the motor are damaged; moreover, the impeller is blocked in the existing water pump, and at the moment, the motor is frequently started because no flow exists in the pipe, so that the motor is burnt out.

Disclosure of Invention

The utility model aims to provide a water pump which can continuously work and has no clamping phenomenon of an impeller.

The purpose of the utility model is realized in the following way:

the water pump comprises a pump body, wherein a pump head, an impeller and a motor are arranged in the pump body, the pump head is fixedly connected to the motor, the output end of the motor is provided with the impeller, and the impeller is arranged in an impeller cavity at the lower part of the pump head;

the pump head is provided with a first expansion pipe section above, a second expansion pipe section above the first expansion pipe section is provided with a three-section combined structure for connection, a cavity at the upper part of the pump head and a cavity in the first expansion pipe section form a reflux cavity, and an air cavity is formed in the second expansion pipe section;

the second expansion pipe section is provided with a connector in the same side direction as the motor, one end of the connector is provided with a gas tank, the interior of the gas tank is communicated with the air cavity through the connector, and the gas tank is arranged above the motor;

and a water outlet is arranged at the top of the second expansion pipe section.

Preferably, a step is arranged on the outer side of the upper opening of the pump head, the lower opening of the expansion pipe section is abutted against the step, a platform is arranged on the inner side of the lower opening of the expansion pipe section II, and the upper opening of the expansion pipe section I is abutted against the platform.

Preferably, a baffle plate is arranged in the middle of the backflow cavity, a backflow part is arranged at the bottom of the backflow cavity, one end of the backflow part is transversely arranged at the tail end of the water inlet, a channel is formed between the other end of the backflow part and the baffle plate, and a groove is formed above the backflow part; the water flow enters the air cavity from the right cavity of the backflow cavity, flows from the air cavity to the backflow part, and under the action of the groove, part of water flows back from the cavity above the backflow part, and finally flows back to the impeller cavity smoothly from the channel.

Preferably, a water inlet is arranged on one side of the pump head, and a one-way valve is arranged in the water inlet.

Preferably, a pressure switch is arranged on the inner wall of the backflow cavity and used for detecting pressure change, so that the effect of automatically controlling the motor to act is achieved.

Preferably, the first and second expansion pipe sections are connected to form square body with length of 70-100 mm, width of 70-100 mm and height of 70-100 mm, and the volumes of the first and second expansion pipe sections are 400-700 cm ³ 。

Further preferably, the first and second expanded pipe sections are connected to form a square body with a length82mm, 87mm in width and 85mm in height, and the volumes of the first expansion pipe section and the second expansion pipe section are 592cm ³ 。

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

1. the middle of the backflow cavity is provided with a baffle plate, the bottom of the backflow cavity is provided with a backflow part, one end of the backflow part is transversely arranged at the tail end of the water inlet, the other end of the backflow part and the baffle plate are formed with channels, and a groove is arranged above the backflow part; the water flow enters the air cavity from the right cavity of the backflow cavity, flows from the air cavity to the backflow part, and is partially blocked by the backflow part, so that the water forms a vortex-like shape in the cavity above the backflow part under the action of the groove, and finally, the water flow smoothly flows back to the impeller cavity, and the stability is better.

2. In the process that the gas in the impeller cavity is completely discharged into the gas tank, the liquid mixed with water and vapor can be separated in the air cavity, the gas enters the gas tank, the pressure in the gas tank can be continuously increased, and the water flow is continuously sucked from the water inlet at the moment.

Drawings

Fig. 1 is a schematic diagram of the present utility model.

Fig. 2 is a front cross-sectional view of the present utility model.

Fig. 3 is a side cross-sectional view of the present utility model.

Fig. 4 is an enlarged view at a of fig. 3.

Fig. 5 is an enlarged view at B of fig. 3.

Reference numerals illustrate:

1-a pump body; 11-a pump head; 111-impeller chamber; 112-steps; 113-a water inlet; 114-a one-way valve; 12-impeller; 13-an electric motor; 14-expanding a first pipe section; 15-expanding the second pipe section; 151-platform; 152-interface; 153-water outlet; 16-a reflow chamber; 161-a separator; 162-reflux unit; 163-channel; 164-groove; 17-air cavity; 18-pressure switch; 2-gas tank.

Detailed Description

The utility model is further described in the following embodiments with reference to the figures, see fig. 1-5:

1-2, a water pump comprises a pump body 1, wherein a pump head 11, an impeller 12 and a motor 13 are arranged in the pump body 1, the pump head 11 is fixedly connected to the motor 13, the pump head 11 and the motor 13 are particularly connected through bolts, the output end of the motor 13 is provided with the impeller 12, and the impeller 12 is arranged in an impeller cavity 111 at the lower part of the pump head 11; the upper part of the pump head 11 is provided with a first expansion pipe section 14, the upper part of the first expansion pipe section 14 is provided with a second expansion pipe section 15, the pump head 11, the first expansion pipe section 14 and the second expansion pipe section 15 are connected in a three-section combined structure, a cavity at the upper part of the pump head 11 and a cavity in the first expansion pipe section 14 form a reflux cavity 16, and an air cavity 17 is formed in the second expansion pipe section 15; the second expansion pipe section 15 is provided with a connector 152 in the same side direction as the motor 13, one end of the connector 152 is provided with a gas tank 2, the interior of the gas tank 2 is communicated with the air cavity 17 through the connector 152, the gas tank 2 is arranged above the motor 13, the gas tank 2 has the effects of storage and pressurization, and the top of the second expansion pipe section 15 is provided with a water outlet 153; in the impeller chamber 111, when the gas cannot be discharged to the outside, at this time, the impeller 12 is operated, and since the pressure inside the pump body 1 is greater than the pressure of the water inlet 113, so that the inflow water is not sucked, it is necessary to store the gas by using the gas tank 2, so that the pressure inside the pump body 1 is reduced; in the process that the gas in the impeller cavity 111 is completely discharged into the gas tank 2, the liquid mixed with water and vapor is separated in the air cavity 17, the gas enters the gas tank 2, the pressure in the gas tank 2 is continuously increased, and at the moment, water flow is continuously sucked from the water inlet 113, when the impeller cavity 111 and the air cavity 17 are gradually filled with water, the continuous pressurization of the gas tank 2 can continuously discharge the water flow from the water outlet 153, so that the effect that the water flow is continuously sucked from the water inlet 113 and continuously discharged from the water outlet 153 is achieved.

As shown in fig. 3-5, the three-section combined structure of the pump head 11, the first expansion pipe section 14 and the second expansion pipe section 15 is specifically that a step 112 is arranged on the outer side of an upper opening of the pump head 11, a lower opening of the first expansion pipe section 14 is abutted against the step 112, a platform 151 is arranged on the inner side of a lower opening of the second expansion pipe section 15, and an upper opening of the first expansion pipe section 14 is abutted against the platform 151.

A baffle 161 is arranged in the middle of the backflow cavity 16, a backflow part 162 is arranged at the bottom of the backflow cavity 16, one end of the backflow part 162 is transversely arranged at the tail end of the water inlet 113, a channel 163 is formed between the other end of the backflow part 162 and the baffle 161, and a groove 164 is arranged above the backflow part 162; the water flow enters the air cavity 17 from the right cavity of the backflow cavity 16, flows from the air cavity 17 to the backflow part 162, and a part of the water flow is blocked by the backflow part 162, so that the part of the water forms a vortex-like water flow in the cavity above the backflow part 162 under the action of the groove 164, and finally the water flow smoothly flows back to the impeller cavity 111, so that the stability is better, and the air in the impeller cavity 111 and the water flow can be effectively separated; that is, in the initial stage of the water pump just pumping, one side of the partition 161 is used for water flow (at this time, the water flow is in a water-vapor mixing state), the other side is used for water flow backflow (at this time, the water flow is in a water-vapor separation state, gas enters the gas tank 2 on the upper surface, and the water flow flows downwards to form backflow), and along with the increase and decrease of the water flow, after the impeller cavity 111 is completely filled with water, that is, the air in the impeller cavity 111 is exhausted, and at this time, the water flows of the flow channels on the two sides of the partition 161 are all supplied upwards.

One side of the pump head 11 is provided with a water inlet 113, a one-way valve 114 is arranged in the water inlet 113, and the one-way valve 114 has the function of preventing water in the pump body 1 from being discharged from the water inlet 113, so that the phenomenon that water cannot be pumped out by a water pump is avoided.

The pressure switch 18 is arranged on the inner wall of the backflow cavity 16, the pressure switch 18 is used for detecting pressure change, the effect of automatically controlling the motor 13 to act is achieved, the continuously working booster water pump can keep the pressure in the pipeline at a certain value basically, the sensor detects small change of the pressure, the control system converts the pressure into control (such as frequency change) of the water pump power supply, accordingly, the output power of the motor 13 is changed, the output pressure of the water pump is changed, and the purpose of providing constant pressure for the system is achieved.

The first expansion pipe section 14 and the second expansion pipe section 15 are connected to form a square body, the length of the square body is 70-100 mm, the width of the square body is 70-100 mm, the height of the square body is 70-100 mm, and the volumes of the first expansion pipe section 14 and the second expansion pipe section 15 (namely the volumes of the air cavity 17 and the reflux cavity 16) are 400-700 cm ³ 。

In this embodiment, the first and second expanded

pipe sections

14 and 15 are further preferably formed into square bodies with a length of 82mm, a width of 87mm, a height of 85mm, and volumes of 592cm ³ 。

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a water pump, includes pump body (1), be equipped with pump head (11), impeller (12) and motor (13) in pump body (1), pump head (11) fixed connection is in on motor (13), motor (13) output is equipped with impeller (12), impeller (12) set up in impeller cavity (111) of pump head (11) lower part, its characterized in that:

an expansion pipe section I (14) is arranged above the pump head (11), an expansion pipe section II (15) is arranged above the expansion pipe section I (14), the pump head (11), the expansion pipe section I (14) and the expansion pipe section II (15) are connected in a three-section combined structure, a reflux cavity (16) is formed by a cavity at the upper part of the pump head (11) and a cavity in the expansion pipe section I (14), and an air cavity (17) is formed in the expansion pipe section II (15);

an interface (152) is arranged in the same side direction of the expansion pipe section II (15) and the motor (13), one end of the interface (152) is provided with a gas tank (2), the interior of the gas tank (2) is communicated with the air cavity (17) through the interface (152), and the gas tank (2) is arranged above the motor (13);

and a water outlet (153) is arranged at the top of the expansion pipe section II (15).

2. A water pump according to claim 1, wherein: the pump head (11) upper portion opening part outside is equipped with step (112), expansion pipe section one (14) lower part opening part butt is in on step (112), expansion pipe section two (15) lower part opening part inboard is equipped with platform (151), expansion pipe section one (14) upper portion opening part butt is in on platform (151).

3. A water pump according to claim 1, wherein: a baffle plate (161) is arranged in the middle of the backflow cavity (16), a backflow part (162) is arranged at the bottom of the backflow cavity (16), one end of the backflow part (162) is transversely arranged at the tail end of a water inlet (113) of the pump head (11), a channel (163) is formed between the other end of the backflow part and the baffle plate (161), and a groove (164) is formed above the backflow part (162); the water flow enters the air cavity from the right cavity of the backflow cavity (16), flows from the air cavity (17) to the backflow part (162), and under the action of the groove (164), part of the water flows back in the cavity above the backflow part (162), and finally flows back to the impeller cavity (111) smoothly from the channel (163).

4. A water pump according to claim 1, wherein: a water inlet (113) is formed in one side of the pump head (11), and a one-way valve (114) is arranged in the water inlet (113).

5. A water pump according to claim 1, wherein: the inner wall of the backflow cavity (16) is provided with a pressure switch (18), and the pressure switch (18) is used for detecting pressure change so as to achieve the effect of automatically controlling the action of the motor (13).

6. A water pump according to claim 1, wherein: the first expansion pipe section (14) and the second expansion pipe section (15) are connected to form a square body, the length of the square body is 70-100 mm, the width of the square body is 70-100 mm, the height of the square body is 70-100 mm, and the volumes of the first expansion pipe section (14) and the second expansion pipe section (15) are 400-700 cm ³ 。

7. A kind of according to claim 6The water pump, its characterized in that: the first expansion pipe section (14) and the second expansion pipe section (15) are connected to form a square body, the length of the square body is 82mm, the width of the square body is 87mm, the height of the square body is 85mm, and the volumes of the first expansion pipe section (14) and the second expansion pipe section (15) are 592cm ³ 。