Self-suction water pump

Abstract

The utility model provides a self-suction water pump, and belongs to the technical field of water pumps. The problem that in the prior art, faults are prone to occurring due to too many one-way valves is solved. The device comprises a driving motor, a volute, an electromagnetic control valve, a cylinder body and a negative pressure tank, one end of the driving motor is fixedly connected with a bracket, the volute is connected with the other end of the bracket, a water absorption cover body is fixedly arranged on one side of the volute, a water absorption one-way valve is fixedly installed on the outer side of the water absorption cover body, and a water outlet is formed and formed in one end of the volute. A square connecting opening is formed in the upper end of the water suction one-way valve, the negative pressure tank is fixedly connected with the water suction one-way valve through the square connecting opening, the upper end of the driving motor is fixedly connected with a supporting table, the electromagnetic control valve is fixedly installed above the supporting table, and the cylinder body is fixedly connected with the upper end of the electromagnetic control valve. A connecting port is formed in the lower end of the cylinder body, and a connecting hose is arranged between the connecting port and the negative pressure tank. The utility model has the advantages of stable structure and long service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps and relates to a self-priming water pump. Background Art

[0002] A self-priming water pump is a water pump that can use the negative pressure (vacuum) formed when the pump is working to pressurize the water below the suction port when the suction pipe is filled with air, and then discharge it from the discharge end of the water pump.

[0003] The Chinese patent with patent announcement number CN201902302U discloses a self-priming water pump, including a driving motor arranged on a support frame, a cylinder body arranged above the driving motor, and its structural feature is that an eccentric transmission assembly is provided on the driving motor, and a piston rod on the cylinder body is connected to a driving component at a position corresponding to the eccentric transmission assembly, and the driving component and the eccentric transmission assembly are mutually transmission-connected, and the driving component includes a dovetail groove upper plate and a matching dovetail groove lower plate, and a mounting groove is provided on the upper part of the dovetail groove upper plate; a cylinder body connecting piece is provided in the mounting groove, one end of the cylinder body connecting piece is fixed with the dovetail groove upper plate, and the dovetail groove upper plate is slidably arranged on the dovetail groove lower plate, and the cylinder body is provided with more than one drain port and water suction port, and the drain port and water suction port are respectively connected to a one-way valve to control the opening and closing of the drain port and the water suction port; the one-way valve includes a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve; two one-way valves in opposite directions are respectively provided at the drain port and the water suction port of the cylinder body.

[0004] The patent provides a self-priming water pump in which water is taken in and out through a number of one-way valves. The structure is relatively complex, and due to the excessive number of one-way valves, problems with the one-way valves are prone to occur. Utility Model Content

[0005] The purpose of the utility model is to provide a self-priming water pump in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a self-priming water pump, comprising a driving motor, a volute, an electromagnetic control valve, a cylinder body and a negative pressure tank, one end of the driving motor is fixedly connected to a bracket, the volute is connected to the other end of the bracket, one side of the volute is fixedly provided with a water suction cover body, the outer side of the water suction cover body is fixedly installed with a water suction check valve, one end of the volute is formed and opened with a water outlet, the outer end of the water outlet is fixedly installed with a water outlet check valve, the upper end of the water suction check valve is opened with a connecting square port, the negative pressure tank is fixedly connected to the water suction check valve through the connecting square port, the upper end of the driving motor is fixedly connected to a support platform, the electromagnetic control valve is fixedly installed above the support platform, the cylinder body is fixedly connected to the upper end of the electromagnetic control valve, the lower end of the cylinder body is formed with a connecting port, a connecting hose is provided between the connecting port and the negative pressure tank, the connecting hose is connected to the top of the negative pressure tank and the connecting hose is respectively connected to the cylinder body and the inside of the negative pressure tank.

[0007] In the above-mentioned self-priming water pump, a plurality of strip-shaped holes are provided inside the water suction one-way valve, and the strip-shaped holes are communicated with the interior of the connecting square port.

[0008] In the above-mentioned self-priming water pump, a control pipeline is connected to the electromagnetic control valve, and the control pipeline extends out of the electromagnetic control valve and is connected to the bracket.

[0009] In the above-mentioned self-priming water pump, a motor shaft extends from one end of the drive motor, a small pulley is fixedly mounted on the motor shaft, a control shaft extends from one end of the electromagnetic control valve, a large pulley is mounted on the control shaft, and a drive belt is connected between the large pulley and the small pulley.

[0010] In the above-mentioned self-priming water pump, a protective shell is fixedly mounted on the outside of the small pulley and the large pulley.

[0011] Compared with the prior art, the self-priming water pump provided by the present invention has the following beneficial effects: through the structural method of directly connecting the water intake check valve and the water discharge check valve to the volute, the need for redundant check valves is reduced, and through the setting of the electromagnetic control valve, the electromagnetic control valve controls the inside of the volute through the control pipeline, effectively improving the accuracy of the flow control of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 Schematic diagram of the internal structure of the protective shell;

[0014] Figure 3 It is a schematic diagram of the structure of a water suction one-way valve.

[0015] In the figure: 1. Drive motor; 110. Motor shaft; 2. Volute; 21. Water suction cover; 22. Water outlet; 3. Solenoid control valve; 31. Control pipeline; 32. Control shaft; 4. Cylinder body; 41. Connection port; 5. Negative pressure tank; 6. Bracket; 7. Water suction one-way valve; 71. Connecting square port; 72. Strip hole; 8. Water outlet one-way valve; 9. Support platform; 10. Connecting hose; 11. Small pulley; 12. Large pulley; 13. Drive belt; 14. Protective shell. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3 As shown, this embodiment includes a driving motor 1, a volute 2, an electromagnetic control valve 3, a cylinder body 4, a negative pressure tank 5, a water suction one-way valve 7 and a water outlet one-way valve 8. The volute 2 is fixed between the driving motor 1 and the water suction one-way valve 7. One end of the driving motor 1 close to the volute 2 is fixedly connected to a bracket 6. The volute 2 is fixedly connected to the other end of the bracket 6. A water suction cover 21 is fixedly provided on one side of the volute 2. The water suction one-way valve 7 is fixedly connected to the outer side of the water suction cover 21. A water outlet 22 is formed and opened at the front end of the volute 2. The water outlet one-way valve 8 is fixedly connected to the outer end of the water outlet 22. The water suction one-way valve 7 and the water outlet one-way valve 8 are both connected to the inside of the volute 2. A connecting square port 71 is opened at the upper end of the water suction one-way valve 7. The negative pressure tank 5 is fixedly connected to the water suction one-way valve 7 through the connecting square port 71.

[0018] like Figures 1 to 3 As shown, the upper end of the driving motor 1 is fixedly connected to the support platform 9, the electromagnetic control valve 3 is fixedly installed above the support platform 9, the electromagnetic control valve 3 is connected to the control pipeline 31, the control pipeline 31 extends out of the electromagnetic control valve 3 and is connected to the bracket 6, the driving motor 1 and the electromagnetic control valve 3 have motor shafts 110 and control shafts 32 extending from one end respectively, the motor shaft 110 and the control shaft 32 are respectively fixed with a small pulley 11 and a large pulley 12, and the large pulley 12 and the small pulley 11 are connected between the driving pulley Belt 13, the driving belt 13 transmits the operation of the small pulley 11 and drives the large pulley 12 to work, thereby driving the electromagnetic control valve 3 to operate, the cylinder body 4 is fixedly connected to the upper end of the electromagnetic control valve 3, and a connecting port 41 is formed at the lower end of the cylinder body 4. A connecting hose 10 is provided between the connecting port 41 and the negative pressure tank 5. The connecting hose 10 is connected to the top of the negative pressure tank 5 and the connecting hose 10 is respectively connected to the cylinder body 4 and the inside of the negative pressure tank 5. The operation of the cylinder body 4 forms a negative pressure inside the negative pressure tank 5 through the connecting hose 10.

[0019] To elaborate further, Figure 3As shown, a plurality of strip holes 72 are opened inside the water suction one-way valve 7 , and the strip holes 72 are communicated with the interior of the connecting square port 71 . The strip holes 72 transmit the negative pressure generated in the negative pressure tank 5 to the interior of the water suction one-way valve 7 .

[0020] To elaborate further, Figures 1 to 2 As shown, a protective shell 14 is fixedly mounted on the outside of the small pulley 11 and the large pulley 12. The protective shell 14 protects the small pulley 11, the large pulley 12 and the driving belt 13, thereby extending the service life of this embodiment.

[0021] The working principle of the utility model is as follows: the driving motor 1 drives the motor 1 shaft to rotate, and drives the electromagnetic control valve 3 through the small pulley 11, the driving belt 13 and the large pulley 12. The electromagnetic control valve 3 controls the operation of the water pump assembly inside the volute 2 through the control pipeline 31. The cylinder body 4 controls the negative pressure inside the negative pressure tank 5 through the connecting hose 10. The water intake check valve 7 takes in water and passes through the volute 2, and is finally discharged from the water outlet check valve 8.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0023] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A self-priming water pump, comprising a drive motor (1), a volute (2), an electromagnetic control valve (3), a cylinder (4) and a negative pressure tank (5), characterized in that: One end of the driving motor (1) is fixedly connected to a bracket (6), the volute (2) is connected to the other end of the bracket (6), a water absorption cover (21) is fixedly provided on one side of the volute (2), a water absorption check valve (7) is fixedly installed on the outside of the water absorption cover (21), one end of the volute (2) is formed and provided with a water outlet (22), the outer end of the water outlet (22) is fixedly provided with a water outlet check valve (8), the upper end of the water absorption check valve (7) is provided with a connecting square port (71), and the negative pressure tank (5) is connected to the water absorption cover (21) through the connecting square port (71). The one-way valve (7) is fixedly connected, the upper end of the driving motor (1) is fixedly connected to a support platform (9), the electromagnetic control valve (3) is fixedly installed above the support platform (9), the cylinder body (4) is fixedly connected to the upper end of the electromagnetic control valve (3), the lower end of the cylinder body (4) is formed with a connection port (41), a connection hose (10) is provided between the connection port (41) and the negative pressure tank (5), the connection hose (10) is connected to the top of the negative pressure tank (5), and the connection hose (10) is respectively connected to the inside of the cylinder body (4) and the negative pressure tank (5).

2. A self-priming water pump according to claim 1, characterized in that: A plurality of strip-shaped holes (72) are provided inside the water suction one-way valve (7), and the strip-shaped holes (72) are communicated with the interior of the connecting square port (71).

3. A self-priming water pump according to claim 1, characterized in that: A control pipeline (31) is connected to the electromagnetic control valve (3), and the control pipeline (31) extends out of the electromagnetic control valve (3) and is connected to the bracket (6).

4. A self-priming water pump according to claim 1, characterized in that: A motor shaft (110) extends from one end of the driving motor (1), a small pulley (11) is sleeved and fixed on the motor shaft (110), a control shaft (32) extends from one end of the electromagnetic control valve (3), a large pulley (12) is sleeved on the control shaft (32), and a driving belt (13) is connected between the large pulley (12) and the small pulley (11).

5. A self-priming water pump according to claim 4, characterized in that: A protective shell (14) is fixedly sleeved on the outside of the small pulley (11) and the large pulley (12).

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