A protection device for preventing submersible pumps from starting in deep water environments

Abstract

The application relates to a protection device for preventing a submersible pump from starting in a deep water environment, which comprises a shell, a floating ball and a Hall induction element; a movable cavity is arranged in the shell; a connecting rod is slidably arranged at one end of the movable cavity; a magnet is fixed at one end of the connecting rod; the floating ball is fixed at the other end of the connecting rod; the Hall induction element is arranged at the other end of the movable cavity and opposite to the magnet; and an elastic spring for providing an elastic tendency of the connecting rod to the side of the magnet is arranged in the movable cavity. The application has the effect of prolonging the service life of the submersible pump.

Description

Technical Field

[0001] This application relates to the technical field of water pump components, and in particular to a protective device for preventing submersible pumps from starting in deep water environments. Background Technology

[0002] Depending on the materials used, submersible pumps can withstand different pressures in their working environment, which means they can dive to different depths.

[0003] Regarding the aforementioned technologies, if the submersible pump is used incorrectly by staff or if changes in the external environment cause it to submerge deeper than it is normally used, the pump parts may deform. Starting the submersible pump in this situation may cause irreversible damage and reduce its service life. Therefore, there are certain areas for improvement. Utility Model Content

[0004] To improve the service life of submersible pumps, this application provides a protective device to prevent submersible pumps from starting in deep water environments.

[0005] The present application provides a protective device for preventing submersible pumps from starting in deep water environments, which adopts the following technical solution: a protective device for preventing submersible pumps from starting in deep water environments, including a housing, a float and a Hall effect sensor;

[0006] The housing has a movable cavity, a connecting rod is slidably mounted on one end of the movable cavity, a magnet is fixed to one end of the connecting rod, and the float is fixed to the other end of the connecting rod.

[0007] The Hall sensor element is disposed at the other end of the movable cavity opposite to the magnet;

[0008] The movable cavity is provided with a spring spring for providing an elastic tendency for the connecting rod to move toward the magnet.

[0009] Preferably, one end of the movable cavity is threadedly connected to an adjusting nut, and the adjusting nut is provided with a mounting bushing along its axial direction, and the connecting rod is slidably disposed in the mounting bushing.

[0010] Preferably, the connecting rod is provided with a spring stop, the elastic spring is disposed in the movable cavity, one end of the elastic spring abuts against the spring stop, and the other end of the elastic spring abuts against the end of the adjusting nut.

[0011] Preferably, the mounting bushing is provided with a sliding groove and a control groove, the sliding groove and the control groove are spaced apart along the circumferential direction of the mounting bushing, the sliding groove and the control groove are arranged along the axial direction from the end face of the mounting bushing, the depth of the control groove is smaller than that of the sliding groove, and the connecting rod is provided with a control rod for being engaged in the sliding groove or the control groove.

[0012] Preferably, one end of the connecting rod is provided with a mounting section, and the end of the mounting section is provided with a mounting groove, in which the magnet is fixed.

[0013] Preferably, the housing is provided with a partition plate in the movable cavity, the partition plate dividing the movable cavity into an upper cavity and a lower cavity, the connecting rod is located in the upper cavity, the Hall sensing element is located in the lower cavity, and the partition plate is provided with a passage for the mounting section to pass through.

[0014] Preferably, the other end of the connecting rod is provided with a fixing hole along its axial direction, and a fixing rod is fixed on the float and inserted into the fixing hole.

[0015] Preferably, the float is a rubber ball, and the float has a sealed buoyancy cavity inside.

[0016] Preferably, the other end of the movable cavity is threadedly connected to a mounting sleeve, the mounting sleeve has a mounting position, the Hall sensor element is located in the mounting position, and the other end of the movable cavity is threadedly connected to a limiting nut for limiting the mounting sleeve.

[0017] Preferably, one Hall effect sensor is provided, or two Hall effect sensors are provided.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] In this application, the volume of the float changes with the water pressure. When the submersible pump is used in the normal water depth range, the volume of the float decreases due to the water pressure. The buoyancy generated by the smaller float is greater than the elastic force of the spring and its own weight, which makes the magnet move away from the Hall sensing element, and the submersible pump starts normally.

[0020] When a submersible pump is used in water depths exceeding its normal operating range, the float experiences greater water pressure and is smaller in size. The buoyancy it generates is less than the spring force and its own weight. When the magnet approaches the Hall effect sensor, the submersible pump cannot start. This prevents the submersible pump from starting in excessively deep waters and under high pressure, thus avoiding affecting the pump's service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the protective device.

[0022] Figure 2 This is a schematic diagram of one embodiment of the protective device.

[0023] Figure 3 This is a schematic diagram of another embodiment of the protective device.

[0024] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Float; 3. Hall effect sensor; 4. Movable cavity; 5. Connecting rod; 6. Adjusting nut; 7. Mounting bushing; 8. Magnet; 9. Mounting section; 10. Mounting groove; 11. Fixing hole; 12. Fixing rod; 13. Buoyancy cavity; 14. Mounting sleeve; 15. Mounting position; 16. Limiting nut; 17. Cable sleeve; 18. Spring; 19. Spring guard; 20. Divider plate; 21. Sliding groove; 22. Control groove; 23. Control rod. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] Reference Figure 1 and Figure 2 As shown, a protective device for preventing a submersible pump from starting in a deep water environment includes a housing 1, a float 2, and a Hall effect sensor 3.

[0027] The housing 1 is cylindrical and has a movable cavity 4 inside. The movable cavity 4 is arranged along the axial direction of the housing 1 and passes through both ends of the housing 1. A connecting rod 5 is slidably arranged at one end of the movable cavity 4 and an adjusting nut 6 is threadedly connected to the other end of the movable cavity 4. An installation bushing 7 is arranged along the axial direction of the adjusting nut 6, and the connecting rod 5 is slidably arranged in the installation bushing 7.

[0028] A magnet 8 is fixed to one end of the connecting rod 5, and a float 2 is fixed to the other end of the connecting rod 5. One end of the connecting rod 5 is provided with a mounting section 9, and a mounting groove 10 is opened at the end of the mounting section 9. The magnet 8 is fixed in the mounting groove 10. The other end of the connecting rod 5 is provided with a fixing hole 11 along its axial direction, and a fixing rod 12 is fixed to the float 2 and inserted into the fixing hole 11.

[0029] The fixing rod 12 extends to the outside of the shell 1 and is integrally formed on the float 2. The float 2 is a rubber ball and has a sealed buoyancy cavity 13 inside. After the float 2 is immersed in water, the volume of the float 2 changes with the water pressure.

[0030] Hall effect sensor 3 is located at the other end of the movable cavity 4, opposite to magnet 8. Hall effect sensor 3 and magnet 8 are directly opposite each other and spaced apart. The other end of the movable cavity 4 is threadedly connected to mounting sleeve 14, which has mounting position 15. Hall effect sensor 3 is located in mounting position 15. The other end of the movable cavity 4 is threadedly connected to limiting nut 16 for limiting mounting sleeve 14. Cable sleeve 17 is located in mounting sleeve 14. The signal line of Hall effect sensor 3 is led out to the outside of housing 1 through cable sleeve 17 for connection to submersible pump.

[0031] The movable cavity 4 is provided with a spring spring 18 for providing an elastic tendency for the connecting rod 5 toward the magnet 8. In this embodiment, the connecting rod 5 is provided with a spring stop 19, and the spring spring 18 is provided in the movable cavity 4. One end of the spring spring 18 abuts against the spring stop 19, and the other end of the spring spring 18 abuts against the end of the adjusting nut 6.

[0032] In order to limit the range of motion of the connecting rod 5, the housing 1 is provided with a partition plate 20 in the movable cavity 4. The partition plate 20 divides the movable cavity 4 into an upper cavity and a lower cavity. The connecting rod 5 is located in the upper cavity, and the Hall sensing element 3 is located in the lower cavity. The partition plate 20 is provided with a passage for the installation section 9 to pass through. The partition plate 20 is used to block the spring stop 19 and can limit the sliding stroke of the connecting rod 5.

[0033] Therefore, when the submersible pump is used within the normal water depth range, the float 2 is reduced in volume due to water pressure. The buoyancy generated by the reduced float 2 is greater than the elastic force of the spring 18 and its own weight, causing the magnet 8 to move away from the Hall sensor 3, and the submersible pump starts normally.

[0034] When the submersible pump is used in water depths exceeding its normal operating range, the float 2 experiences greater water pressure. Because the float 2 is smaller, the buoyancy it generates is less than the elastic force of the spring 18 and its own weight. When the magnet 8 approaches the Hall effect sensor 3, the submersible pump cannot start, thus preventing it from starting in excessively deep waters and under high pressure, and avoiding impacting the pump's lifespan.

[0035] The mounting bushing 7 is provided with a sliding groove 21 and a control groove 22. The sliding groove 21 and the control groove 22 are spaced apart along the circumferential direction of the mounting bushing 7 and are arranged along the axial direction from the end face of the mounting bushing 7. The depth of the control groove 22 is smaller than that of the sliding groove 21. The connecting rod 5 is provided with a control rod 23 for being embedded in the sliding groove 21 or the control groove 22.

[0036] When the control rod 23 is engaged in the sliding groove 21, the connecting rod 5 can slide along the mounting sleeve 7, thereby controlling the start or stop of the submersible pump according to the water depth. When the control rod 23 is engaged in the control groove 22, the connecting rod 5 is restricted from sliding along the mounting sleeve 7, thus keeping the magnet 8 away from the Hall sensor 3, thereby keeping the submersible pump in the running state. Therefore, when the control rod 23 is engaged in the control groove 22, the protection device will lose its water depth protection function.

[0037] In one embodiment, refer to Figure 2 As shown, when one Hall sensor 3 is installed in mounting position 15, the protection device's logic for starting and stopping the submersible pump is as follows: when the submersible pump is used within the normal water depth range, the magnet 8 is moved away from the Hall sensor 3, and the submersible pump starts normally. When the submersible pump is used in a water depth exceeding the normal operating range, the magnet 8 is brought close to the Hall sensor 3, and the submersible pump cannot start.

[0038] In another embodiment, refer to Figure 3 As shown, when two Hall effect sensors 3 are installed in the mounting position 15, the two Hall effect sensors 3 have different sensing ranges, which are named Hall effect sensor one and Hall effect sensor two below. The sensing range of Hall effect sensor one is greater than that of Hall effect sensor two.

[0039] Therefore, when the submersible pump is within the normal water pressure range and the water depth is greater than the set starting water depth, the volume of the float 2 decreases due to water pressure, and the buoyancy generated by the float 2 is less than the elastic force of the spring 18 and its own weight. The magnet 8 enters the range of Hall sensor element one (but does not enter the sensing range of Hall sensor element two), and the submersible pump starts.

[0040] When the water level drops and the water depth becomes shallower, the pressure on the float 2 decreases, its volume increases, and the buoyancy generated increases, exceeding the elastic force and its own weight. The magnet 8 moves out of the sensing range of Hall effect sensor 1 and Hall effect sensor 2, and the submersible pump stops and cannot be started.

[0041] When the submersible pump is used in water depths exceeding its normal operating range, the float 2 experiences greater pressure, becomes smaller, and generates less buoyancy. The magnet 8 then descends further into the sensing range of the Hall effect sensor, causing the submersible pump to stop and fail to restart.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protection device for preventing the starting of a submersible pump in a deep water environment, characterized in that, It includes a housing (1), a float (2), and a Hall effect sensor (3); The housing (1) is provided with a movable cavity (4), and a connecting rod (5) is slidably provided at one end of the movable cavity (4). A magnet (8) is fixed at one end of the connecting rod (5), and the float (2) is fixed on the other end of the connecting rod (5). The Hall sensor (3) is disposed at the other end of the active cavity (4) opposite to the magnet (8); The movable cavity (4) is provided with a spring spring (18) for providing an elastic tendency for the connecting rod (5) to move toward the magnet (8).

2. A protection device for preventing the start-up of an immersion pump in a deep water environment according to claim 1, characterized in that, One end of the movable cavity (4) is threadedly connected to an adjusting nut (6), and the adjusting nut (6) is provided with a mounting bushing (7) along its axial direction. The connecting rod (5) is slidably disposed in the mounting bushing (7).

3. The protective device for preventing submersible pumps from starting in deep water environments according to claim 2, characterized in that, A spring stop (19) is provided on the connecting rod (5), and the elastic spring (18) is provided in the movable cavity (4). One end of the elastic spring (18) abuts against the spring stop (19), and the other end of the elastic spring (18) abuts against the end of the adjusting nut (6).

4. A protective device for preventing submersible pumps from starting in deep water environments according to claim 2, characterized in that, The mounting bushing (7) is provided with a sliding groove (21) and a control groove (22). The sliding groove (21) and the control groove (22) are spaced apart along the circumferential direction of the mounting bushing (7). The sliding groove (21) and the control groove (22) are arranged along the axial direction from the end face of the mounting bushing (7). The groove depth of the control groove (22) is smaller than that of the sliding groove (21). The connecting rod (5) is provided with a control rod (23) for being engaged in the sliding groove (21) or the control groove (22).

5. A protective device for preventing submersible pumps from starting in deep water environments according to claim 1, characterized in that, One end of the connecting rod (5) is provided with an installation section (9), and an installation groove (10) is provided at the end of the installation section (9), and the magnet (8) is fixed in the installation groove (10).

6. A protective device for preventing submersible pumps from starting in deep water environments according to claim 5, characterized in that, The housing (1) is provided with a partition plate (20) in the movable cavity (4), the partition plate (20) divides the movable cavity (4) into an upper cavity and a lower cavity, the connecting rod (5) is located in the upper cavity, the Hall sensing element (3) is located in the lower cavity, and the partition plate (20) is provided with a passage for the mounting section (9) to pass through.

7. A protective device for preventing submersible pumps from starting in deep water environments according to claim 1, characterized in that, The other end of the connecting rod (5) is provided with a fixing hole (11) along its axial direction, and a fixing rod (12) is fixed on the float (2) and inserted into the fixing hole (11).

8. A protective device for preventing submersible pumps from starting in deep water environments according to claim 1, characterized in that, The float (2) is a rubber ball, and a sealed buoyancy cavity (13) is provided inside the float (2).

9. A protective device for preventing submersible pumps from starting in deep water environments according to claim 1, characterized in that, The other end of the movable cavity (4) is threadedly connected to a mounting sleeve (14), and a mounting position (15) is provided in the mounting sleeve (14). The Hall sensing element (3) is provided in the mounting position (15), and the other end of the movable cavity (4) is threadedly connected to a limiting nut (16) that limits the mounting sleeve (14).

10. A protective device for preventing submersible pumps from starting in deep water environments according to claim 1, characterized in that, The Hall sensor (3) may be provided with one or two.

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