Submerged pump with anti-reverse function
By embedding a permanent magnet ring and excitation coil in the submersible pump, the rotation direction of the pump shaft can be automatically detected, solving the problem of cumbersome reverse operation of the submersible pump, thus simplifying operation and improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-03-10
AI Technical Summary
When using existing submersible pumps temporarily, the electrical phase sequence needs to be adjusted to prevent the impeller from reversing. This operation is cumbersome and wastes manpower, especially when there is no flow meter or pressure gauge, making it difficult to determine the impeller rotation direction.
Design a submersible pump with anti-reverse function. By embedding a permanent magnet ring and an excitation coil on the pump shaft, the permanent magnet ring cuts the excitation coil to generate current. When rotating in the forward direction, the current is consumed in the resistor. When rotating in the reverse direction, it drives the alarm to sound and prompt the operator to reconnect the power cord.
It enables automatic detection of the submersible pump's rotation direction, preventing reverse rotation, simplifying the operation process, saving manpower, and improving efficiency.
Smart Images
Figure CN223984585U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to centrifugal pump technical field especially relates to a liquid pump with prevent reverse function. BACKGROUND
[0002] The centrifugal pump has the special structure to the impeller, and has the requirement to the rotating direction of the impeller, namely so-called requirement positive rotation, when first time, need to adjust the phase sequence of three power to ensure the positive rotation of the impeller, however, in the temporary use centrifugal pump, need to adjust the phase sequence of three power every time, due to the impeller reverse rotation also can pump out water, but the lift and flow are not enough, for some work place, for example, temporary use submersible pump, liquid pump etc., if not flowmeter or pressure gauge, the staff is difficult to judge the impeller whether positive rotation. SUMMARY
[0003] In order to solve the current drilling operation pumping mud when lifting or descending one kind of operation of the liquid pump with the function of preventing reverse is complicated, waste manpower, the utility model provides a kind of liquid pump with the function of preventing reverse.
[0004] The utility model provides a technical scheme: a liquid pump with the function of preventing reverse, including motor, bearing chamber, pump shaft, cylinder, impeller and snail shell and the vertical long shaft liquid pump of snail shell composition, cylinder upper portion connects bearing chamber, cylinder lower portion connects snail shell, pump shaft is located in cylinder, pump shaft lower portion connects impeller, pump shaft outer circle is fixedly connected through bolt and is positioned with sleeve, the sleeve is inlaid with permanent magnet ring on outer circle, the window is opened in permanent magnet ring position of cylinder, cylinder is connected gland through bolt in permanent magnet ring position, and the pressure cover is inserted into the cylinder and approaches permanent magnet ring position, and the excitation coil is installed in the position of permanent magnet ring outside of pressure cover, and the excitation coil is connected with wire A and wire B, and wire B is connected with alarm, and alarm is connected with zero line B, and zero line B is connected on cylinder, and cylinder is made of carbon steel, and wire A is connected with resistance, and resistance is connected with zero line A, and zero line A is connected with cylinder.
[0005] When pump shaft positive rotation, wire A generates current, and when pump shaft reverse rotation, wire B generates current.
[0006] The utility model has the advantages that: when the liquid pump is running, the pump shaft rotates, and the cylinder does not rotate, when the pump shaft rotates, the permanent magnet ring generates magnetic force cutting current to the excitation coil, when the pump shaft positive rotation, the current generated by the excitation coil is consumed by the resistance, when the three power phase connection is wrong, the current generated by the excitation coil drives the alarm to alarm, prompting the operator to reconnect the power cord, and the shell prevents the reverse rotation of the liquid pump. BRIEF DESCRIPTION OF DRAWINGS
[0007] The utility model is a structure schematic drawing; Figure 1
[0008] The utility model is a structure schematic drawing; Figure 2 the attachment Figure 1 enlarged view of A in
[0009] Figure 1 - bearing chamber, 2 - motor, 3 - pump shaft, 4 - cylinder, 5 - snail shell, 6 - positioning sleeve, 7 - permanent magnet ring, 8 - gland, 9 - excitation coil, 10 - wire A, 11 - resistor, 12 - zero line A, 13 - wire B, 14 - alarm, 15 - zero line B. DETAILED DESCRIPTION
[0010] As Figures 1-2 shown, a liquid pump with anti-reverse function, comprising a motor 2, a bearing chamber 1, a pump shaft 3, a cylinder 4, an impeller and a snail shell 5 consisting of a vertical long shaft liquid pump, the upper part of the cylinder 4 is connected with the bearing chamber 1, the lower part of the cylinder 4 is connected with the snail shell 5, the pump shaft 3 is located in the cylinder 4, the lower part of the pump shaft 3 is connected with the impeller, the outer circle of the pump shaft 3 is fixedly connected with the positioning sleeve 6 through bolts, the positioning sleeve 6 is inlaid with a permanent magnet ring 7 on the outer circle, the cylinder 4 is provided with a window at the position of the permanent magnet ring 7, the cylinder 4 is connected with the gland 8 through bolts at the position of the permanent magnet ring 7, the gland 8 extends into the cylinder 4 close to the position of the permanent magnet ring 7, the excitation coil 9 is installed on the outer side of the permanent magnet ring 7, the excitation coil 9 is connected with the wire A 10 and the wire B 13, the wire B 13 is connected with the alarm 14, the alarm 14 is connected with the zero line B 15, the zero line B 15 is connected with the cylinder 4, the cylinder 4 is made of carbon steel, the wire A 10 is connected with the resistor 11, the resistor 11 is connected with the zero line A 12, and the zero line A 12 is connected with the cylinder 4.
[0011] When the pump shaft 3 rotates forward, the wire A 10 generates current, and when the pump shaft 3 reverses, the wire B 13 generates current.
[0012] When the liquid pump is running, the pump shaft 3 rotates and the cylinder 4 does not rotate. When the pump shaft 3 rotates, the permanent magnet ring 7 generates magnetic force to cut the excitation coil 9 to generate current. When the pump shaft 3 rotates forward, the current generated by the excitation coil 9 is consumed by the resistor 11. When the three power phase connections are wrong, the current generated by the excitation coil 9 drives the alarm 14 to alarm, prompting the operator to reconnect the power line, and the shell prevents the liquid pump from reversing.
Claims
1. A submerged pump with anti-reverse function, comprising a motor (2), a bearing chamber (1), a pump shaft (3), a cylinder body (4), an impeller and a snail shell (5) consisting of a vertical long shaft submerged pump, characterized in that: The upper part of the cylinder (4) is connected with the bearing chamber (1), the lower part of the cylinder (4) is connected with the snail shell (5), the pump shaft (3) is located in the cylinder (4), the lower part of the pump shaft (3) is connected with the impeller, the outer circle of the pump shaft (3) is fixedly connected with the positioning sleeve (6) through bolts, the outer circle of the positioning sleeve (6) is inlaid with the permanent magnet ring (7), the cylinder (4) is provided with a window at the position of the permanent magnet ring (7), the cylinder (4) is connected with the gland (8) through bolts at the position of the permanent magnet ring (7), the gland (8) extends into the cylinder (4) and approaches the position of the permanent magnet ring (7), the excitation coil (9) is installed on the outer side of the permanent magnet ring (7), the excitation coil (9) is connected with the wire A (10) and the wire B (13), the wire B (13) is connected with the alarm (14), the alarm (14) is connected with the zero line B (15), the zero line B (15) is connected with the cylinder (4), the cylinder (4) is made of carbon steel, the wire A (10) is connected with the resistance (11), the resistance (11) is connected with the zero line A (12), and the zero line A (12) is connected with the cylinder (4).
2. The submersible pump with anti-reverse function according to claim 1, characterized in that: When the pump shaft (3) rotates forward, the wire A (10) generates current, and when the pump shaft (3) reverses, the wire B (13) generates current.