Anti-abrasion centrifugal pump

Abstract

The utility model provides an anti-abrasion centrifugal pump, and belongs to the field of water pumps. The utility model relates to a centrifugal pump, in particular to a silt blocking device, which solves the problem that parts in a pump body are damaged as long as silt is sucked into the pump body in the using process of the centrifugal pump, comprises the pump body and a motor, and is characterized in that a water inlet channel is arranged at the front end of the pump body, and a blocking sheet for blocking the silt is arranged in the water inlet channel. The blocking piece is of a two-section type structure, an upper blocking piece is located above the blocking piece, a lower blocking piece is located below the blocking piece, a transversely-arranged connecting piece is arranged between the upper blocking piece and the lower blocking piece, a plurality of water filtering holes are formed in the connecting piece, and the water filtering holes are communicated with the upper blocking piece and the lower blocking piece. A filter hole used for filtering silt is formed in the lower blocking piece, a pressure sensor is arranged below the water inlet channel, and the pressure sensor is connected with a motor.

Description

Technical Field

[0001] The utility model belongs to the field of water pumps, and particularly relates to an anti-wear centrifugal pump. Background Art

[0002] During the use of the centrifugal pump, mud and sand will be sucked into the pump body, which will cause damage to the parts inside the pump body over time. Summary of the invention

[0003] The utility model aims to provide an anti-wear centrifugal pump in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an anti-wear centrifugal pump, comprising a pump body and a motor, characterized in that a water inlet is arranged at the front end of the pump body, and a blocking plate for blocking mud and sand is arranged in the water inlet, and the blocking plate is a two-stage structure, an upper blocking plate is located above the blocking plate, and a lower blocking plate is located below the blocking plate, a horizontally placed connecting plate is arranged between the upper blocking plate and the lower blocking plate, a plurality of water filtering holes are opened on the connecting plate, and a filtering hole for filtering mud and sand is opened on the lower blocking plate, and a pressure sensor is arranged below the water inlet, and the pressure sensor is connected to the motor.

[0005] In the above-mentioned wear-resistant centrifugal pump, the diameter of the filter hole is smaller than the diameter of the water filter hole.

[0006] In the above-mentioned anti-wear centrifugal pump, the pressure sensor is used to sense the sediment accumulated in the water inlet and transmit the signal to the motor to control the rotation speed of the motor.

[0007] Compared with the prior art, the present invention has blocking plates in the water inlet to block silt from entering the pump body in sections. When too much silt accumulates in the water inlet, the pressure sensor will transmit a signal to the motor to reduce the speed of the motor to prevent damage to the centrifugal pump caused by overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the main body of the anti-wear centrifugal pump;

[0009] Figure 2 It is a partial schematic diagram of the anti-wear centrifugal pump.

[0010] In the figure, 1, pump body; 2, motor; 3, water inlet; 4, blocking plate; 5, upper blocking plate; 6, lower blocking plate; 7, connecting plate; 8, water filter hole; 9, filter hole; 10, pressure sensor. DETAILED DESCRIPTION

[0011] 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.

[0012] like Figure 1 , Figure 2 The present wear-resistant centrifugal pump comprises a pump body 1 and a motor 2. A water inlet 3 is arranged at the front end of the pump body 1. There is a blocking plate 4 for blocking mud and sand in the water inlet 3. The blocking plate 4 is a two-stage structure. An upper blocking plate 5 is located above the blocking plate 4, and a lower blocking plate 6 is located below the blocking plate 4. A horizontally placed connecting plate 7 is arranged between the upper blocking plate 5 and the lower blocking plate 6. A plurality of water filtering holes 8 are opened on the connecting plate 7. A filtering hole 9 for filtering mud and sand is opened on the lower blocking plate 6. A pressure sensor 10 is arranged below the water inlet 3. The pressure sensor 10 is connected to the motor 2. The diameter of the filtering hole 9 is smaller than the diameter of the water filtering hole 8.

[0013] The pressure sensor 10 is used to sense the sediment accumulated in the water inlet 3 and transmit a signal to the motor 2 to control the rotation speed of the motor 2 .

[0014] After the centrifugal pump is turned on, water enters the pump body 1 through the water inlet 3. After contacting the upper blocking piece 5, the water will flow downward. Larger sediments will be blocked in front of the lower blocking piece 6. The water without sediment will enter the pump body 1 through the water filter holes 8 on the connecting piece 7. The water with fine sediment will pass through the filter holes 9 on the lower blocking piece 6. After passing through the filter holes 9, the fine sediment will be blocked in front of the lower blocking piece 6. If there is too much sediment in front of the lower blocking piece 6, the pressure sensor 10 will be triggered and the motor 2 will slow down to prevent overheating of the pump body 1 caused by the obstruction of the water inlet 3. At this time, the sediment in front of the lower blocking piece 6 is cleaned and the motor 2 resumes normal operation.

[0015] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0016] Although the present invention uses more terms such as pump body 1, motor 2, water inlet 3, blocking sheet 4, upper blocking sheet 5, lower blocking sheet 6, connecting sheet 7, water filter hole 8, filter hole 9, pressure sensor 10, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A wear-resistant centrifugal pump, comprising a pump body (1) and a motor (2), characterized in that: The front end of the pump body (1) is provided with a water inlet (3), and the water inlet (3) has a blocking plate (4) for blocking mud and sand. The blocking plate (4) is a two-stage structure, with an upper blocking plate (5) located above the blocking plate (4) and a lower blocking plate (6) located below the blocking plate (4). A horizontally placed connecting plate (7) is provided between the upper blocking plate (5) and the lower blocking plate (6), and a plurality of water filtering holes (8) are provided on the connecting plate (7). A filtering hole (9) for filtering mud and sand is provided on the lower blocking plate (6). A pressure sensor (10) is provided below the water inlet (3), and the pressure sensor (10) is connected to the motor (2).

2. The wear-resistant centrifugal pump according to claim 1, characterized in that: The diameter of the filtering hole (9) is smaller than the diameter of the water filtering hole (8).

3. The wear-resistant centrifugal pump according to claim 1, characterized in that: The pressure sensor (10) is used to sense the sediment accumulated in the water inlet (3) and transmit a signal to the motor (2) to control the rotation speed of the motor (2).

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