Novel submerged pump

Abstract

A novel submerged pump relates to the technical field of centrifugal pumps. A swing mechanism is fixedly connected to the pump shaft and comprises two lug plates, the two lug plates are welded to the pump shaft, the two lug plates are connected with a supporting arm through pin shafts, so that the supporting arm can swing in the circumferential direction of the pump shaft, steel balls are welded to the outer side of the supporting arm, extension springs are hung between the supporting arm and the lug plates, and the extension springs are located on the reverse rotation side of the pump shaft. A sounding mechanism is arranged on the inner side of the extension pipe. The beneficial effects of the utility model are that the swing mechanism is arranged on the pump shaft and the sounding mechanism is arranged in the extension tube, so that when three cables of the submerged pump are connected in a wrong phase sequence and the pump shaft rotates reversely, the steel ball touches the strings to make a high-scale sound to prompt a worker to connect power again, and when the steel ball touches each string, the steel ball makes three different-scale sounds to prompt the worker to connect power again. And a worker is prevented from mistakenly thinking other sounds.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and in particular to a novel submersible pump. Background Technology

[0002] Centrifugal pumps have specific requirements regarding the impeller's rotation direction, meaning they must rotate forward. Each time power is reconnected, the phase sequence of the three-phase power supply needs to be adjusted to ensure the impeller rotates forward. While the impeller can also pump water in reverse, the head and flow rate will be insufficient. For submersible pumps, operators cannot directly observe the impeller's rotation direction. Without a flow meter or pressure gauge, it is difficult for operators to determine whether the impeller is rotating forward. Utility Model Content

[0003] To address the problem of not being able to determine whether the impeller of a submersible pump is rotating in the correct direction, this invention provides a novel submersible pump.

[0004] The technical solution provided by this utility model is: a novel submersible pump, including a submersible pump motor, a bearing chamber, a pump shaft, and a volute. The volute and the bearing chamber are connected by an extension tube. A swing mechanism is fixedly connected to the pump shaft. The swing mechanism includes two lugs, which are welded to the pump shaft. The two lugs are connected to a support arm by a pin, so that the support arm can swing along the circumference of the pump shaft. A steel ball is welded to the outside of the support arm. A tension spring is hung between the support arm and the lugs. The tension spring is located on the side of the pump shaft that rotates in the opposite direction.

[0005] The inner side of the extension tube is equipped with a sound-producing mechanism, which includes two support plates. The upper and lower support plates are welded to the inner wall of the extension tube. The two support plates are connected to the strings. The lower support plate is fixedly connected to the lower side of the strings. Two seat plates are fixedly connected to the upper part of the upper support plate. The two seat plates are rotatably connected to the tuning peg. The tuning peg is fixedly connected to the upper part of the strings. A positioning plate is provided on one side of the tuning peg. A countersunk hole is opened on the end face of the upper support plate. A positioning pin is inserted horizontally into the positioning plate. The positioning pin is inserted into the countersunk hole so that the tuning peg cannot rotate.

[0006] The steel ball overlaps with the string in the circumferential direction. A limiting plate is fixedly connected to the ear plate. The limiting plate causes the support arm to tilt to the side of the tension spring, so that the steel ball does not contact the string in the circumferential direction.

[0007] Both the swing mechanism and the sound-producing mechanism are equipped with three sets of strings evenly arranged around the circumference of the pump shaft, and the tension of the three strings is different.

[0008] The beneficial effects of this utility model are as follows: by setting a swing mechanism on the pump shaft and a sound-producing mechanism in the extension tube, when the three-phase cable of the submersible pump is connected in the wrong phase sequence and the pump shaft is reversed, the steel ball swings outward under the action of centrifugal force and touches the string. The steel ball touches the string and emits a high-pitched sound, prompting the staff to reconnect the power. The steel ball emits three different pitches when touching each string, avoiding the staff from mistakenly thinking it is the sound of other equipment. Attached Figure Description

[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Appendix Figure 2 Appendix Figure 1 AA cross-section view;

[0011] Appendix Figure 3 Appendix Figure 1 Enlarged view of point B;

[0012] Appendix Figure 4 It is attached Figure 3 Enlarged view of point C.

[0013] In the diagram, 1-motor, 2-bearing chamber, 3-pump shaft, 4-snail shell, 5-extension tube, 6-steel ball, 7-tension spring, 8-support arm, 9-ear plate, 10-limiting plate, 11-pin, 12-support plate, 13-string, 14-winding pin, 15-seat plate, 16-positioning plate, 17-positioning pin, 18-countersunk hole. Detailed Implementation

[0014] like Figures 1-4 As shown, a novel submersible pump includes a submersible pump motor 1, a bearing chamber 2, a pump shaft 3, and a volute 4. The volute 4 and the bearing chamber 2 are connected by an extension tube 5. A swing mechanism is fixedly connected to the pump shaft 3. The swing mechanism includes two lugs 9, which are welded to the pump shaft 3. The two lugs 9 are connected to a support arm 8 by a pin 11, so that the support arm 8 can swing along the circumference of the pump shaft 3. A steel ball 6 is welded to the outside of the support arm 8. A tension spring 7 is hung between the support arm 8 and the lugs 9. The tension spring 7 is located on the side of the pump shaft 3 that rotates in the opposite direction.

[0015] The inner side of the extension tube 5 is equipped with a sound-producing mechanism, which includes two support plates 12. The upper and lower support plates 12 are welded to the inner wall of the extension tube 5. The two support plates 12 are connected to the strings 13. The lower support plate 12 is fixedly connected to the lower side of the strings 13. Two seat plates 15 are fixedly connected to the upper part of the upper support plate 12. The two seat plates 15 are rotatably connected to the tuning peg 14. The tuning peg 14 is fixedly connected to the upper part of the strings 13. A positioning plate 16 is provided on one side of the tuning peg 14. A countersunk hole 18 is opened on the end face of the upper support plate 12. A positioning pin 17 is inserted horizontally into the positioning plate 16. The positioning pin 17 is inserted into the countersunk hole 18, so that the tuning peg 14 cannot rotate. After the tuning peg 14 pulls the strings 13 tight, the positioning pin 17 is inserted into the positioning plate 16 and the countersunk hole 18.

[0016] The steel ball 6 overlaps with the string 13 in the circumferential direction. The limiting plate 10 is fixedly connected to the ear plate 9. The limiting plate 10 causes the support arm 8 to tilt to one side of the tension spring 7, so that the steel ball 6 does not contact the string 13 in the circumferential direction.

[0017] By setting a swing mechanism on the pump shaft 3 and a sound-producing mechanism in the extension tube 5, when the three-phase cable of the submersible pump is connected in the wrong phase sequence or the pump shaft is reversed, the steel ball 6 swings outward under the action of centrifugal force and touches the string 13. The steel ball 6 touches the string 13 and emits a high-pitched sound, prompting the staff to reconnect the power.

[0018] Both the swing mechanism and the sound-producing mechanism are equipped with three sets of evenly arranged around the circumference of the pump shaft 3, which does not disrupt the dynamic balance of the pump shaft. The tension of the three strings 13 is different. When the pump shaft reverses, the steel ball 6 touches each string 13 and produces three different pitches, preventing staff from mistaking them for other sounds.

Claims

1. A new type of submersible pump comprising a motor (1) of the submersible pump, a bearing chamber (2), a pump shaft (3), a snail shell (4), characterized in that: The snail shell (4) and the bearing chamber (2) are connected through the extension pipe (5), the pump shaft (3) is fixedly connected with the swing mechanism, the swing mechanism comprises two ear plates (9), the two ear plates (9) are welded on the pump shaft (3), the two ear plates (9) are connected with the supporting arm (8) through the pin shaft (11), so that the supporting arm (8) can swing along the circumferential direction of the pump shaft (3), the steel ball (6) is welded on the outer side of the supporting arm (8), the supporting arm (8) and the ear plate (9) are hung with the tension spring (7), and the tension spring (7) is located on the reverse rotation side of the pump shaft (3); The extension pipe (5) is provided with a sound generating mechanism, the sound generating mechanism comprises two supporting plates (12), the upper and lower supporting plates (12) are welded on the inner wall of the extension pipe (5), the two supporting plates (12) are connected with the string (13), the lower side of the string (13) is fixedly connected with the lower supporting plate (12), the upper supporting plate (12) is fixedly connected with two seat plates (15) on the upper portion, the two seat plates (15) are rotatably connected with the string winding shaft (14), the string (13) is fixedly connected with the string winding shaft (14) on the upper portion, the string winding shaft (14) is provided with the positioning plate (16) on one side, the end surface of the upper supporting plate (12) is provided with the counterbore (18), the positioning plate (16) is transversely inserted with the positioning pin (17), and the positioning pin (17) is inserted into the counterbore (18), so that the string winding shaft (14) cannot rotate.

2. A new type of submersible pump as claimed in claim 1, wherein: The steel ball (6) overlaps the string (13) in the circumferential direction, the ear plate (9) is fixedly connected with the limiting plate (10), the limiting plate (10) makes the supporting arm (8) lean on one side of the tension spring (7), so that the steel ball (6) does not contact the string (13) in the circumferential direction.

3. A new type of submersible pump as claimed in claim 1, wherein: The swing mechanism and the sound generating mechanism are provided with three sets of three strings (13) which are uniformly arranged along the circumference of the pump shaft (3), and the tension degrees of the three strings (13) are different.

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