Vacuumizing device of centrifugal draining pump

Abstract

The utility model discloses a vacuum-pumping device of a centrifugal drainage pump, which comprises a negative pressure chamber, a vacuum pump, a drainage chamber, a drainage pipe, an electromagnetic valve I, a water inlet pipe, an electromagnetic valve II, a butt joint ring and a shroud ring, when the vacuum-pumping device is used, the electromagnetic valve I and the electromagnetic valve II are closed, and the negative pressure chamber, the drainage chamber and the water inlet pipe are vacuumized through the vacuum pump; when the motor is started to drive the impeller to rotate and the vacuum pump is closed, the impeller can continuously rotate to cause negative pressure in the negative pressure chamber, the drainage chamber and the water inlet pipe to suck water through the water inlet pipe, so that the water can automatically enter the negative pressure chamber, the drainage chamber and the water inlet pipe through the water inlet pipe; a butt joint ring is sleeved with a hoop ring, then a butt joint rubber ring is clamped in a rubber ring ring groove, after the filter screen is damaged, maintenance and replacement of the filter screen are facilitated, the filter screen is convenient and rapid to disassemble, and maintenance work of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal drainage pumps, and particularly relates to a vacuum pumping device for a centrifugal drainage pump. Background Art

[0002] The centrifugal water pump is briefly called "centrifugal pump", also known as centrifugal water pump. It is a pumping machine that utilizes the centrifugal motion of water. Before starting, the pump should be filled with water first. After starting, the rotating impeller drives the water in the pump to rotate at a high speed. The water undergoes centrifugal motion, is thrown outwards and is pressed into the outlet pipe. After the water is thrown out, the pressure near the impeller decreases, and a low-pressure area is formed near the rotating shaft. The pressure here is much lower than the atmospheric pressure. The outside water then rushes open the bottom valve and enters the pump through the inlet pipe under the action of the atmospheric pressure. The water that rushes in is thrown out again during the high-speed rotation with the impeller and is pressed into the outlet pipe. The impeller continuously rotates at a high speed driven by the power machine, and the water is continuously pumped from a low place to a high place.

[0003] When the existing centrifugal water pump is in use, it needs to be manually filled with water in the pump first before the pump can be started, and then the negative pressure in the cavity is caused by the impeller to complete the start of the pump. The operation is relatively complex, and there is still room for improvement in terms of ease of use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum pumping device for a centrifugal drainage pump, so as to solve the technical problem that the operation is relatively complex during startup in the prior art and there is still room for improvement in terms of ease of use.

[0005] The technical problem to be solved by the utility model can be realized through the following technical solutions:

[0006] A vacuum pumping device for a centrifugal drainage pump, comprising:

[0007] A negative pressure chamber outer shell, one side end face of the negative pressure chamber outer shell is fixedly connected with a drainage chamber outer shell. A negative pressure chamber is opened in the negative pressure chamber outer shell. An impeller is arranged in the negative pressure chamber. A motor for driving the impeller to rotate is arranged on the negative pressure chamber outer shell. A drainage chamber is opened in the drainage chamber outer shell. The negative pressure chamber is communicated with the drainage chamber. The lower end face of the negative pressure chamber outer shell is fixedly connected with an inlet pipe, and the inlet pipe is communicated with the negative pressure chamber. The upper end face of the drainage chamber outer shell is fixedly connected with a drain pipe, and the drain pipe is communicated with the drainage chamber. A filter screen is arranged at the lower end of the inlet pipe;

[0008] A vacuum pump, the vacuum pump is embedded on the negative pressure chamber outer shell, and the negative pressure end of the vacuum pump is communicated with the negative pressure chamber;

[0009] A first solenoid valve and a second solenoid valve. The first solenoid valve is fixedly installed on the drain pipe. A mounting plate is fixedly connected to the inner wall of the inlet pipe. The second solenoid valve is embedded through the mounting plate.

[0010] As a further solution of the utility model: a driving shaft is fixedly connected to the driving end of the motor, the driving shaft is coaxially fixedly connected to the impeller, and a bearing is embedded through the outer shell of the negative pressure chamber.

[0011] As a further solution of the utility model: the outer ring of the bearing is fixedly connected to the negative pressure chamber shell, and the drive shaft is sleeved and fixedly connected to the inner ring of the bearing.

[0012] As a further solution of the utility model: a docking ring is coaxially fixedly connected to the bottom surface of the water inlet pipe, a docking rubber ring is sleeved and fixedly connected to the outer end surface of the docking ring, a hoop ring is coaxially fixedly connected to the filter screen, and a rubber ring groove corresponding to the docking rubber ring is annularly opened on the inner end surface of the hoop ring.

[0013] As a further solution of the utility model: the docking ring is sleeved in the hoop ring, and the docking rubber ring is sleeved in the rubber ring groove.

[0014] As a further solution of the utility model: an electronic liquid level meter for monitoring the liquid level in the drainage chamber is fixedly installed in the drainage chamber.

[0015] Beneficial effects of the utility model:

[0016] When the utility model is in use, the first solenoid valve and the second solenoid valve are closed, the negative pressure chamber, the drainage chamber and the water inlet pipe are evacuated by the vacuum pump, and the second solenoid valve is opened, so that water can automatically enter the negative pressure chamber, the drainage chamber and the water inlet pipe through the second solenoid valve, thereby avoiding the trouble of manual water supply. When the motor is started to drive the impeller to rotate, the vacuum pump is closed at the same time. The rotation of the impeller can continuously cause negative pressure in the negative pressure chamber, the drainage chamber and the water inlet pipe to suck water through the water inlet pipe and then discharge it through the drainage pipe. A docking ring is fixedly connected to the bottom surface of the water inlet pipe, a docking rubber ring is sleeved on the docking ring, and a hoop ring is fixedly connected to the filter screen, and a rubber ring groove corresponding to the docking rubber ring is opened on the hoop ring. By sleeved the hoop ring on the docking ring and then clamped the docking rubber ring in the rubber ring groove, it is convenient to install and disassemble the filter screen on the water inlet pipe. When the filter screen is damaged, it is convenient to maintain and replace the filter screen, and the disassembly process of the filter screen is convenient and quick, which is convenient for the maintenance work of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model after the filter screen is removed;

[0020] Figure 3 This utility modelFigure 2 Schematic enlarged structure diagram at position A in the [device];

[0021] Figure 4 Schematic sectional structure diagram of part of the structure of the present utility model;

[0022] Figure 5 Schematic structure diagram of the connection relationship between the filter screen and the hoop of the present utility model.

[0023] In the figure: 1. Outer shell of the negative pressure chamber; 2. Negative pressure chamber; 3. Vacuum pump; 4. Outer shell of the drainage chamber; 5. Drainage chamber; 6. Drain pipe; 7. Solenoid valve I; 8. Water inlet pipe; 9. Mounting plate; 10. Solenoid valve II; 11. Impeller; 12. Motor; 13. Filter screen; 14. Docking ring; 15. Docking rubber ring; 16. Hoop; 17. Rubber ring groove. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] As Figures 1-5 shown, a vacuum pumping device for a centrifugal drainage pump includes an outer shell 1 of a negative pressure chamber, a vacuum pump 3, a solenoid valve I 7, and a solenoid valve II 10. One side end face of the outer shell 1 of the negative pressure chamber is fixedly connected with an outer shell 4 of a drainage chamber. A negative pressure chamber 2 is provided in the outer shell 1 of the negative pressure chamber. An impeller 11 is arranged in the negative pressure chamber 2. A motor 12 for driving the impeller 11 to rotate is arranged on the outer shell 1 of the negative pressure chamber. A drainage chamber 5 is provided in the outer shell 4 of the drainage chamber. The negative pressure chamber 2 is communicated with the drainage chamber 5. A water inlet pipe 8 is fixedly connected to the lower end face of the outer shell 1 of the negative pressure chamber, and the water inlet pipe 8 is communicated with the negative pressure chamber 2. A drain pipe 6 is fixedly connected to the upper end face of the outer shell 4 of the drainage chamber, and the drain pipe 6 is communicated with the drainage chamber 5. A filter screen 13 is arranged at the lower end of the water inlet pipe 8. The vacuum pump 3 is embedded in the outer shell 1 of the negative pressure chamber, and the negative pressure end of the vacuum pump 3 is communicated with the negative pressure chamber 2. The solenoid valve I 7 is fixedly installed on the drain pipe 6. A mounting plate 9 is fixedly connected to the inner wall of the water inlet pipe 8, and the solenoid valve II 10 is embedded through the mounting plate 9.

[0026] A driving shaft is fixedly connected to the driving end of the motor 12, and the driving shaft is coaxially and fixedly connected with the impeller 11. A bearing is embedded through the outer shell 1 of the negative pressure chamber, the outer ring of the bearing is fixedly connected with the outer shell 1 of the negative pressure chamber, and the driving shaft is sleeved and fixedly connected to the inner ring of the bearing.

[0027] In some embodiments, the bearing is a sealed bearing.

[0028] A docking ring 14 is coaxially fixedly connected to the bottom surface of the water inlet pipe 8, and a docking rubber ring 15 is sleeved and fixedly connected to the outer end surface of the docking ring 14. A hoop ring 16 is coaxially fixedly connected to the filter screen 13, and a rubber ring groove 17 corresponding to the docking rubber ring 15 is annularly opened on the inner end surface of the hoop ring 16. The docking ring 14 is sleeved in the hoop ring 16, and the docking rubber ring 15 is sleeved in the rubber ring groove 17.

[0029] In some specific implementation schemes, an electronic liquid level meter for monitoring the liquid level in the drainage chamber 5 is fixedly installed in the drainage chamber 5, and the solenoid valve 7 is automatically opened to drain the water when the drainage chamber 5 is full of liquid.

[0030] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0031] When in use, close the solenoid valve 1 7 and the solenoid valve 2 10, evacuate the negative pressure chamber 2, the drainage chamber 5 and the water inlet pipe 8 through the vacuum pump 3, open the solenoid valve 2 10, so that water can automatically enter the negative pressure chamber 2, the drainage chamber 5 and the water inlet pipe 8 through the solenoid valve 2 10, avoiding the trouble of manual water supply, and turn off the vacuum pump 3 while starting the motor 12 to drive the impeller 11 to rotate. The rotation of the impeller 11 can continuously create negative pressure in the negative pressure chamber 2, the drainage chamber 5 and the water inlet pipe 8 to suck water through the water inlet pipe 8 and then discharge it through the drainage pipe 6. A docking ring 14 is fixedly connected to the bottom surface of the water pipe 8, and a docking rubber ring 15 is sleeved on the docking ring 14. A hoop ring 16 is fixedly connected to the filter screen 13, and a rubber ring groove 17 corresponding to the docking rubber ring 15 is opened on the hoop ring 16. By sleeved the hoop ring 16 on the docking ring 14 and then clamping the docking rubber ring 15 in the rubber ring groove 17, it is convenient to install and disassemble the filter screen 13 on the water inlet pipe 8. When the filter screen 13 is damaged, it is convenient to maintain and replace the filter screen 13, and the disassembly process of the filter screen 13 is convenient and quick, which is convenient for the staff to carry out maintenance work.

[0032] Several embodiments of the utility model are described in detail above, but the embodiments of the utility model are not limited thereto and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A vacuum pump for a centrifugal drainage pump, characterized in that: include: A negative pressure chamber shell (1), a drainage chamber shell (4) is fixedly connected to one end surface of the negative pressure chamber shell (1), a negative pressure chamber (2) is provided in the negative pressure chamber shell (1), an impeller (11) is provided in the negative pressure chamber (2), a motor (12) for driving the impeller (11) to rotate is provided on the negative pressure chamber shell (1), a drainage chamber (5) is provided in the drainage chamber shell (4), the negative pressure chamber (2) and the drainage chamber (5) are connected, a water inlet pipe (8) is fixedly connected to the lower end surface of the negative pressure chamber shell (1), the water inlet pipe (8) and the negative pressure chamber (2) are connected, a drainage pipe (6) is fixedly connected to the upper end surface of the drainage chamber shell (4), the drainage pipe (6) and the drainage chamber (5) are connected, and a filter (13) is provided at the lower end of the water inlet pipe (8); A vacuum pump (3), the vacuum pump (3) is embedded in the negative pressure chamber housing (1), and the negative pressure end of the vacuum pump (3) is connected to the negative pressure chamber (2); Solenoid valve 1 (7) and solenoid valve 2 (10), wherein the solenoid valve 1 (7) is fixedly mounted on the drainage pipe (6), a mounting plate (9) is fixedly connected to the inner wall of the water inlet pipe (8), and the solenoid valve 2 (10) is penetrated and embedded in the mounting plate (9).

2. A vacuum pump device for a centrifugal drainage pump according to claim 1, characterized in that: A driving shaft is fixedly connected to the driving end of the motor (12), the driving shaft is coaxially fixedly connected to the impeller (11), and a bearing is embedded through the negative pressure chamber housing (1).

3. A vacuum pump device for a centrifugal drainage pump according to claim 2, characterized in that: The outer ring of the bearing is fixedly connected to the negative pressure chamber shell (1), and the drive shaft is sleeved and fixedly connected to the inner ring of the bearing.

4. The vacuum pump of a centrifugal drainage pump according to claim 1, characterized in that: A docking ring (14) is coaxially fixedly connected to the bottom surface of the water inlet pipe (8), a docking rubber ring (15) is sleeved and fixedly connected to the outer end surface of the docking ring (14), a hoop ring (16) is coaxially fixedly connected to the filter screen (13), and a rubber ring groove (17) corresponding to the docking rubber ring (15) is annularly formed on the inner end surface of the hoop ring (16).

5. A vacuum pump device for a centrifugal drainage pump according to claim 4, characterized in that: The docking ring (14) is sleeved in the hoop ring (16), and the docking rubber ring (15) is sleeved in the rubber ring groove (17).

6. The vacuum pump of a centrifugal drainage pump according to claim 1, characterized in that: An electronic liquid level meter for monitoring the liquid level in the drainage chamber (5) is fixedly installed in the drainage chamber (5).

Images