A deep well pump

Abstract

The application relates to a deep-well pump which comprises a motor part and a pump body part, a plug-in hole for installing a power line of the motor part is formed on one side surface of the motor part towards the pump body part, a control switch, an electromagnet and a magnetic block are further arranged, the magnetic block is arranged on the power line, the electromagnet is arranged in the motor part, the control switch is used for controlling on-off of the electromagnet, the electromagnet is used for adsorbing the magnetic block after being electrified, and the power line is bent towards a side far from the pump body part and does not contact the pump body part after the electromagnet adsorbs the magnetic block. An operator installs the power line on the plug-in hole, then starts the electromagnet to be electrified through the control switch, then bends the power line towards the side far from the pump body part to make the electromagnet adsorb the magnetic block, and finally installs the pump body part on the motor part. During the whole process of installing the pump body part on the motor part, the power line does not contact the pump body part, so that the power line cannot be damaged due to being rubbed by the pump body part.

Description

Technical Field

[0001] This application relates to the field of deep well pumps, and more particularly to a deep well pump. Background Technology

[0002] The most distinctive feature of a deep well pump is that it integrates the electric motor and the pump into one unit. It is a type of pump that is immersed in a groundwater well to draw and transport water, and it is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage, and sewage treatment.

[0003] Deep well pumps related to related technologies, such as Figure 1 As shown, the device includes a motor unit 1 and a pump body 2. The motor unit 1 has a power socket 131 for installing the power cord 12 of the motor unit 1 on one side facing the pump body 2. An annular block 22 is fixed to one end of the pump body 2 facing the motor unit 1. The annular block 22 has multiple through holes 223. Multiple screws 14 are fixed to one side of the motor unit 1 facing the pump body 2. The multiple screws 14 correspond to the multiple through holes 223. The through holes 223 allow the corresponding screws 14 to pass through. A gap 224 is left between the pump body 2 and the annular block 22 to allow the screws 14 to pass through completely. The operator uses nuts 141 to screw onto the screws 14 to fix the motor unit 1 and the pump body 2.

[0004] The above-mentioned technical solutions have the following defects: after the power cord is installed on the plug hole, the pump body is then installed on the motor. During the installation of the pump body, the pump body is prone to rubbing against the power cord. If the operator is not careful, the power cord may be damaged, which will affect the normal operation of the deep well pump. Summary of the Invention

[0005] In order to improve the problem that the power cord is easily damaged during the installation of the motor and pump body, this application provides a deep well pump.

[0006] The deep well pump provided in this application adopts the following technical solution:

[0007] A deep well pump includes a motor section and a pump body section. The motor section has a power inlet hole on its side facing the pump body section for installing a power cord. An annular block is fixed to one end of the pump body section facing the motor section. The annular block has multiple through holes. Multiple screws are fixed to the side of the motor section facing the pump body section, each screw corresponding to one of the through holes. A gap is left between the pump body section and the annular block to allow the screws to pass through completely. Nuts are threaded onto the screws to secure the pump body section and the annular block together. The pump body section also includes a control switch, an electromagnet, and a magnetic block. The magnetic block is located on the power cord. The electromagnet is located inside the motor section. The control switch controls the on / off state of the electromagnet. When the electromagnet is energized, it attracts the magnetic block. When the electromagnet attracts the magnetic block, the power cord bends away from the pump body section and does not contact it.

[0008] By adopting the above technical solution, the operator installs the power cord on the plug hole, then starts the electromagnet by controlling the switch, and then bends the power cord away from the pump body so that the electromagnet attracts the magnetic block. Finally, the pump body is installed on the motor. During the entire process of installing the pump body on the motor, the power cord is restricted from contacting the pump body, thus preventing the power cord from being rubbed by the pump body and causing damage, and protecting the power cord.

[0009] Preferably, it also includes a locking component, wherein a sealing block is sleeved and fixed at the end of the power cord near the plug hole, and a sealing groove matching the sealing block is opened on the side of the motor part facing the pump body part, and the locking component locks the sealing block in the sealing groove.

[0010] By adopting the above technical solution, the combination of the sealing block and the sealing groove can reduce the probability of well water entering the power socket, protect the power cord and the power socket, and ensure the normal operation of the deep well pump.

[0011] Preferably, it also includes a driving component, wherein the motor part has an arc-shaped groove that is not connected to the outside world, and a movable block is slidably connected in the arc-shaped groove. The movable block divides the arc-shaped groove into a first cavity and a second cavity that are not connected to each other. The driving component drives the movable block to slide. The motor part has a movable groove that is not connected to the outside world, and the control switch is located in the movable groove. A movable block is slidably connected in the movable groove from the side close to the control switch to the side away from the control switch. The movable block divides the movable groove into a third cavity and a fourth cavity that are not connected to each other. The control switch is located in the third cavity. The movable block is provided with a first spring to drive the movable block away from the control switch without external force. The motor part has a first channel, and the two ends of the first channel are connected to the first cavity and the fourth cavity, respectively. When the pump body is completely installed on the motor part, the driving component drives the movable block to move towards the fourth cavity. The movable block moves to press on the control switch and controls the electromagnet to be de-energized.

[0012] By adopting the above technical solution, when the pump body is installed on the motor, the drive component moves the moving block toward the first chamber, the space of the first chamber is compressed, and the air pressure in the first chamber, the first channel and the fourth chamber increases, so that the moving block overcomes the elastic force of the first spring and moves toward the control switch until the pump body is completely installed on the motor. Then the moving block moves to abut and press the control switch, so that the electromagnet is de-energized and the power cord can automatically return to normal.

[0013] Preferably, the motor section has a second channel, and the two ends of the second channel are respectively connected to a sealing groove and an arc-shaped groove.

[0014] By adopting the above technical solution, since the premise for the movable block to press the control switch is that the arc groove is in a sealed state, the second channel connects the sealing groove and the arc groove, which can simultaneously detect whether the arc groove is in a sealed state. If the electromagnet is not de-energized when the pump body is fully installed on the motor, it indicates that the sealing groove is leaking, thus reminding the operator to check the connection between the power cord and the plug hole in time.

[0015] Preferably, the locking element includes a plurality of second bolts, one end of which passes through the sealing block and is threaded onto the motor section.

[0016] By adopting the above technical solution, the sealing block is fixed in the sealing groove by the second bolt. Since the air pressure in the second channel will increase when the pump body is installed on the motor, the air pressure in the second channel will always give the sealing block a force to push it away from the sealing groove. This can reduce the loosening of the second bolt due to the shaking of the deep well pump and further ensure the normal operation of the deep well pump.

[0017] Preferably, the driving component includes a plurality of second springs, a plurality of sleeves, a plurality of connecting rods, and a plurality of third springs. The plurality of sleeves are slidably connected within the annular block, and the plurality of sleeves correspond to a plurality of through holes. The sleeves surround the corresponding through holes. The plurality of second springs correspond to a plurality of sleeves. The second springs are disposed on the sleeves and are used to drive the end of the sleeve away from the motor part to extend into the gap without the action of external force.

[0018] The movable block includes multiple sliders, which are slidably connected in an arc-shaped groove along a sliding direction parallel to the movable block. Multiple connecting rods correspond to multiple sliders respectively, and are fixed on the corresponding sliders and slidably connected in the motor unit along a sliding direction parallel to the sliders. Multiple third springs correspond to multiple sliders respectively, and are set on the corresponding sliders to drive the corresponding sliders to move toward the second cavity side without external force. Multiple sleeves correspond to multiple connecting rods respectively, and the sliding direction of the sleeves is parallel to the sliding direction of the connecting rods. When the pump body is installed on the motor unit, the sleeve is facing the corresponding connecting rod. When the nut fixes the pump body to the annular block together, the sleeve abuts against the connecting rod and drives the connecting rod to move toward the first cavity side.

[0019] By adopting the above technical solution, during the process of the operator installing the pump body onto the motor, the screw extends out of the corresponding sleeve, which is aligned with the corresponding connecting rod. Then, during the installation of the nut, the nut abuts against the corresponding sleeve and drives the sleeve to move toward the connecting rod, thereby pushing the connecting rod. The connecting rod then pushes the corresponding slider to move, thereby changing the volume of the first chamber. Finally, it drives the movable block to move to abut and press the control switch, automatically de-energizing the electromagnet and automatically restoring the power cord to its normal state.

[0020] Preferably, when the nut secures the pump body to the annular block, the projection of the nut onto the sleeve completely covers the sleeve, and the nut abuts against the side of the annular block facing the pump body.

[0021] By adopting the above technical solution, the nut abuts against the annular block, which enables the nut to achieve a better connection effect.

[0022] Preferably, an extension rod is fixed to one end of the screw away from the pump body. The two ends of the extension rod are respectively fixed to the screw and the side of the arc groove away from the pump body. Slide tracks are provided on both the connecting rod and the slider. The extension rod passes through the slide tracks, and the connecting rod and the slider are slidably connected to the extension rod.

[0023] By adopting the above technical solution, the extension rod not only serves to support the screw, but also provides sliding guidance for the connecting rod and the slider.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] By setting up electromagnets and magnetic blocks, the power cord is prevented from contacting the pump body during the entire process of installing the pump body into the motor, thus preventing the power cord from being rubbed by the pump body and causing damage, and protecting the power cord.

[0026] By setting up a second channel, since the prerequisite for the movable block to press the control switch is that the arc groove is in a sealed state, the second channel connects the sealing groove and the arc groove, which can simultaneously detect whether the arc groove is in a sealed state. If the electromagnet is not de-energized when the pump body is fully installed on the motor, it indicates that the sealing groove is leaking, thus reminding the operator to check the connection between the power cord and the plug hole in time. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the related technology.

[0028] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the installation of the motor section and the pump body section according to an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the power cord being limited according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the structure of a driver component according to an embodiment of this application.

[0032] Figure 6This is a schematic diagram of the control switch on the pump body according to an embodiment of this application.

[0033] Figure 7 yes Figure 2 A cross-sectional view along line AA in the middle.

[0034] Explanation of reference numerals in the attached drawings: 1. Motor section; 11. First shaft; 111. Spline; 12. Power cord; 121. Plug; 122. Sealing block; 123. Locking element; 1231. Second bolt; 124. Magnetic block; 131. Plug hole; 132. Sealing groove; 14. Screw; 141. Nut; 142. Extension rod; 151. Electromagnet; 152. Control switch; 16. Arc groove; 161. Moving block; 1611. Slider; 1612. Slide rail; 162. First cavity; 163. Second cavity; 17. Movable groove; 171. Movable block; 172. Third cavity; 173. Fourth cavity; 174. First spring; 181. First channel; 182. Second channel; 2. Pump body; 21. Second shaft; 22. Annular block; 221. Support block; 222. Clearance groove; 223. Through hole; 224. Gap; 3. Drive component one; 31. Second spring; 32. Sleeve; 321. First limiting block; 33. Connecting rod; 34. Third spring; 35. First limiting groove; 36. Sliding hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0036] This application discloses a deep well pump.

[0037] Reference Figure 2 , Figure 3 This embodiment of a deep well pump includes a motor section 1 with a non-magnetic outer shell and a pump body section 2. The motor section 1 and the pump body section 2 can be made of non-magnetic stainless steel or aluminum alloy. Both the pump body section 2 and the motor section 1 are cylindrical in shape. A first shaft 11 is coaxially rotatably connected to the motor section 1. One end of the first shaft 11 near the pump body section 2 extends out of the motor section 1. A spline 111 is fixed on the outer wall of the end of the first shaft 11 near the pump body section 2. A second shaft 21 is coaxially rotatably connected to the pump body section 2. One end of the second shaft 21 near the motor section 1 extends out of the pump body section 2. A keyway matching the spline 111 is opened at the end of the second shaft 21 near the motor section 1. When the pump body section 2 and the motor section 1 are installed, the spline 111 and the first shaft 11 extend into the keyway. The first shaft 11 and the second shaft 21 are coaxially arranged.

[0038] Reference Figure 3 , Figure 4A power cord 12 is detachably connected to the motor unit 1 to supply power to the motor unit 1. A power socket 131 for installing the power cord 12 is provided on the side of the motor unit 1 facing the pump body 2. The end of the power cord 12 is a plug 121, which is inserted into the power socket 131 to supply power to the motor unit 1. A sealing block 122 is fixedly fitted onto the end of the power cord 12 near the plug 121. A sealing groove 132 matching the sealing block 122 is provided on the side of the motor unit 1 facing the pump body 2. The sealing groove 132 communicates with the power socket 131. A locking member 123 is provided on the sealing block 122, locking the sealing block 122 within the sealing groove 132. The locking member 123 includes two second bolts 1231, located on both sides of the plug 121. One end of each second bolt 1231 passes through the sealing block 122 and is threaded onto the motor unit 1.

[0039] Reference Figure 3 , Figure 4 Multiple support blocks 221 are evenly fixed to the end face of the pump body 2 facing the motor part 1 along the circumferential direction of the pump body 2. The end of the support block 221 away from the pump body 2 is fixed to the same annular block 22. The annular block 22 and the support block 221 are provided with clearance grooves 222 to avoid the sealing block 122 and the power line 12. Multiple through holes 223 are evenly provided on the annular block 22 along the circumferential direction of the annular block 22. The length direction of the through holes 223 is parallel to the length direction of the second shaft 21. Multiple screws 14 are fixed to the side of the motor part 1 facing the pump body 2. The length direction of the screws 14 is parallel to the length direction of the first shaft 11. The multiple screws 14 correspond to the multiple through holes 223 respectively. The through holes 223 are used for the corresponding screws 14 to pass through. The support block 221 does not affect the insertion of the screw 14 or the fixation between the pump body 2 and the motor 1. A gap 224 is left between the pump body 2 and the annular block 22 to allow the screw 14 to pass through completely and for the operator to work. A nut 141 is threaded onto the screw 14 to fix the pump body 2 and the annular block 22 together. When the pump body 2 and the motor 1 are installed together, the annular block 22 abuts against the motor 1. The spline 111 of the first shaft 11 is engaged in the keyway of the second shaft 21. At this time, the end of the screw 14 extends to the gap 224. Then the operator threaded the nut 141 onto the screw 14 and tightened the nut 141 so that the nut 141 abuts against the annular block 22, and finally fixes the pump body 2 and the motor 1 together.

[0040] Reference Figure 3 , Figure 4 The cooperation between the sealing block 122 and the sealing groove 132 can reduce the probability of well water entering the power socket 131, protect the power cord 12 and the power socket 131, and ensure the normal operation of the deep well pump.

[0041] Reference Figure 5 , Figure 6 The motor part 1 is equipped with a control switch 152 and an electromagnet 151. The electromagnet 151 is embedded in the motor part 1. The control switch 152 is used to control the on and off of the electromagnet 151. A magnetic block 124 is fixed on the power cord 12. After the electromagnet 151 is energized, it is used to attract the electromagnet 151. When the electromagnet 151 attracts the magnetic block 124, the power cord 12 bends away from the pump body part 2 and does not contact the pump body part 2.

[0042] Reference Figure 4 , Figure 6 The operator installs the power cord 12 into the power socket 131, then activates the electromagnet 151 via the control switch 152. The power cord 12 is then bent away from the pump body 2 so that the electromagnet 151 attracts the magnetic block 124. Finally, the pump body 2 is installed onto the motor 1. Throughout the installation process, the power cord 12 is prevented from contacting the pump body 2, thus protecting it from damage.

[0043] Reference Figure 5 , Figure 6 The deep well pump of this embodiment also includes a drive component 3. An arc-shaped groove 16, which is not connected to the outside, is formed on the motor part 1 along the circumferential direction of the motor part 1. The two ends of the arc-shaped groove 16 are close to the power insertion hole 131 and are respectively located on both sides of the power insertion hole 131. A moving block 161 is slidably connected in the arc-shaped groove 16 along the axis parallel to the first shaft 11. The moving block 161 divides the arc-shaped groove 16 into a first cavity 162 and a second cavity 163 that are not connected to each other. The first cavity 162 is located on the side of the moving block 161 away from the pump body part 2, and the second cavity 163 is located on the side of the moving block 161 close to the pump body part 2. The drive component 3 drives the moving block 161 to slide.

[0044] Reference Figure 6The motor section 1 has a movable slot 17 that is not connected to the outside. A control switch 152 is fixedly installed at one end of the movable slot 17 near the electromagnet 151. A movable block 171 is slidably connected inside the movable slot 17 from the side near the control switch 152 to the side away from the control switch 152. The movable block 171 divides the movable slot 17 into a third cavity 172 and a fourth cavity 173 that are not connected to each other. The control switch 152 is a contact switch. When the movable block 171 moves toward the third cavity 172 and presses against the control switch 152, the electromagnet 151 is de-energized. When the movable block 171 moves away from the control switch 152, the electromagnet 151 remains energized. The movable slot 17 is provided with a first spring 174. The two ends of the first spring 174 are fixed to the movable block 171 and the side of the fourth cavity 173 away from the movable block 171, respectively. When no external force is applied to the movable block 171, the movable block 171 is always away from the control switch 152 under the action of the first spring 174.

[0045] Reference Figure 5 , Figure 6 The motor part 1 has a first channel 181, and the two ends of the first channel 181 are connected to the first cavity 162 and the fourth cavity 173 respectively. When the pump body part 2 is fully installed on the motor part 1, the drive member 3 drives the moving block 161 to move toward the fourth cavity 173. The moving block 171 moves to press on the control switch 152 and controls the electromagnet 151 to be de-energized.

[0046] Reference Figure 5 , Figure 6 During the installation of the pump body 2 on the motor part 1, the drive component 3 drives the moving block 161 to move toward the first cavity 162. The space of the first cavity 162 is compressed, which causes the air pressure in the first cavity 162, the first channel 181 and the fourth cavity 173 to increase. This causes the moving block 171 to overcome the elastic force of the first spring 174 and move toward the control switch 152 until the pump body 2 is completely installed on the motor part 1. Then the moving block 171 moves to abut and press the control switch 152, which de-energizes the electromagnet 151 and allows the power cord 12 to automatically return to normal.

[0047] Reference Figure 5 , Figure 6 The motor section 1 has two second channels 182, which are located on both sides of the plug hole 131. The two ends of the second channels 182 are connected to the sealing groove 132 and the arc groove 16, respectively. The ends of the two second channels 182 near the arc groove 16 are connected to both ends of the arc groove 16, and the ends of the two second channels 182 near the sealing groove 132 are located on both sides of the plug hole 131.

[0048] Reference Figure 3 , Figure 5Since the prerequisite for the movable block 161 to press the control switch 152 is that the arc groove 16 is in a sealed state, the sealing groove 132 and the arc groove 16 are connected through the second channel 182, so that the arc groove 16 can be detected at the same time to check whether it is in a sealed state. If the electromagnet 151 is not de-energized when the pump body 2 is fully installed on the motor part 1, it indicates that the sealing groove 132 is leaking air, thereby reminding the operator to check the connection between the power cord 12 and the plug hole 131 in time.

[0049] Reference Figure 5 , Figure 6 The driving component 3 includes multiple sets of second springs 31, multiple sleeves 32, multiple connecting rods 33, and multiple third springs 34. The multiple sleeves 32 correspond to multiple through holes 223 respectively. The multiple sleeves 32 are slidably connected in the annular block 22 along the length direction parallel to the through holes 223, and the sleeves 32 surround the corresponding through holes 223. First limiting blocks 321 are fixed on the outer walls of both sides of the sleeve 32. Multiple first limiting grooves 35, matching the multiple first limiting blocks 321, are opened inside the annular block 22. The first limiting blocks 321 are slidably connected within the first limiting grooves 35 along a sliding direction parallel to the sleeve 32. Multiple sets of second springs 31 correspond to multiple sleeves 32. Each set of second springs 31 includes two second springs 31, each located within a corresponding two first limiting grooves 35. The two ends of the second springs 31 are fixedly connected to the first limiting blocks 321 and the side of the first limiting grooves 35 closest to the motor part 1, respectively. Without external force, under the action of the second springs 31, the end of the sleeve 32 away from the motor part 1 moves to the gap 224. Under external force, both ends of the sleeve 32 can move to the outside of the annular block 22.

[0050] Reference Figure 5 , Figure 7The movable block 161 includes multiple sliders 1611. The sliders 1611 are slidably connected within the arc-shaped groove 16 along a sliding direction parallel to the movable block 161. The sliders 1611 are arc-shaped, and the multiple sliders 1611 are sequentially distributed along the circumferential direction of the arc-shaped groove 16. Adjacent sliders 1611 are slidably connected and do not disengage from each other, ensuring that the first cavity 162 and the second cavity 163 are never interconnected. Multiple connecting rods 33 correspond to the multiple sliders 1611. Multiple sliding holes 36 communicating with the second cavity 163 are provided on the side of the motor unit 1 facing the pump body unit 2. The multiple sliding holes 36 correspond to the multiple connecting rods 33. The connecting rods 33 are fixed to the corresponding sliders 1611 and slidably connected within the corresponding sliding holes 36 along a sliding direction parallel to the sliders 1611. Multiple third springs 34 are located in the first cavity 162 and correspond to multiple sliders 1611 respectively. The two ends of the third springs 34 are fixedly connected to the side of the second cavity 163 away from the first cavity 162 and to the corresponding sliders 1611 respectively. When no external force is applied to the sliders 1611 and the connecting rod 33, under the action of the third springs 34, the end of the connecting rod 33 away from the slider 1611 approaches the opening of the sliding hole 36.

[0051] Reference Figure 5 , Figure 6 Multiple sleeves 32 correspond to multiple connecting rods 33 respectively. When the pump body 2 is installed on the motor part 1, the sleeve 32 is directly facing the corresponding connecting rod 33. When the nut 141 fixes the pump body 2 and the annular block 22 together, the nut 141 drives the sleeve 32 to move toward the connecting rod 33. The sleeve 32 abuts against the connecting rod 33 and drives the connecting rod 33 to move toward the first cavity 162.

[0052] Reference Figure 5 , Figure 6 During the process of the operator installing the pump body 2 onto the motor part 1, the screw 14 extends out of the corresponding sleeve 32. The operator then turns multiple nuts 141, which abut against the corresponding sleeve 32 and drive the sleeve 32 to move toward the connecting rod 33, thereby pushing the connecting rod 33. The connecting rod 33 then pushes the corresponding slider 1611 to move, thereby changing the volume of the first cavity 162. Finally, when all the nuts 141 are installed, the movable block 171 can move to abut against and press the control switch 152, automatically de-energizing the electromagnet 151, and the power cord 12 can automatically return to normal.

[0053] Reference Figure 5 , Figure 6 When the nut 141 fixes the pump body 2 and the annular block 22 together, the projection of the nut 141 on the sleeve 32 completely covers the sleeve 32, and the outer edge of the nut 141 abuts against the side of the annular block 22 facing the pump body 2.

[0054] Reference Figure 5 , Figure 7 An extension rod 142 is connected to the screw 14. The length direction of the extension rod 142 is parallel to the length direction of the connecting rod 33. Both the connecting rod 33 and the slider 1611 have slideways 1612 for the extension rod 142 to pass through. One end of the extension rod 142 is fixed to the screw 14, and the other end passes through the slideway 1612 and is fixed to the side of the first cavity 162 away from the second cavity 163. The connecting rod 33 and the slider 1611 are slidably connected to the extension rod 142. The extension rod 142 not only supports the screw 14 but also guides the connecting rod 33 and the slider 1611.

[0055] The implementation principle of a deep well pump according to an embodiment of this application is as follows: The operator installs the power cord 12 into the power socket 131, then activates the electromagnet 151 via the control switch 152. The power cord 12 is then bent away from the pump body 2, causing the electromagnet 151 to attract the magnetic block 124. Finally, the pump body 2 is installed onto the motor part 1. Throughout the installation process, the power cord 12 is prevented from contacting the pump body 2, thus protecting it from damage. After installation, the magnetic block 124 is de-energized, and the power cord 12 automatically returns to normal operation.

[0056] 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 deep well pump comprising a surface non-magnetic motor part (1) and a pump body part (2), a plug-in hole (131) for installing a power line (12) of the motor part (1) is formed on a side surface of the motor part (1) facing the pump body part (2), an annular block (22) is fixed to one end of the pump body part (2) facing the motor part (1), a plurality of through holes (223) are formed in the annular block (22), a plurality of threaded rods (14) are fixed to a side surface of the motor part (1) facing the pump body part (2), the plurality of threaded rods (14) correspond to the plurality of through holes (223) respectively, the through holes (223) are for the corresponding threaded rods (14) to pass through, a gap (224) for the threaded rods (14) to pass through completely is left between the pump body part (2) and the annular block (22), and nuts (141) are threadedly connected to the threaded rods (14) to fix the pump body part (2) and the annular block (22) together. It also includes a control switch (152), an electromagnet (151) and a magnetic block (124), the magnetic block (124) is arranged on the power line (12), the electromagnet (151) is arranged in the motor part (1), the control switch (152) is used to control the on-off of the electromagnet (151), the electromagnet (151) is used to adsorb the electromagnet (151) after being powered on, when the electromagnet (151) adsorbs the magnetic block (124), the power line (12) is bent away from the pump body part (2) and does not contact the pump body part (2); It also includes a locking piece (123), the end of the power line (12) near the plug hole (131) is sleeved with a sealing block (122), the side of the motor part (1) facing the pump body part (2) is provided with a sealing groove (132) matched with the sealing block (122), and the locking piece (123) locks the sealing block (122) in the sealing groove (132); It also includes a driving piece one (3), the motor part (1) is provided with an arc-shaped groove (16) not communicating with the outside, the arc-shaped groove (16) is slidably connected with a moving block (161), the moving block (161) divides the arc-shaped groove (16) into a first cavity (162) and a second cavity (163) not communicating with each other, the driving piece one (3) drives the moving block (161) to slide, the motor part (1) is provided with a movable groove (17) not communicating with the outside, the control switch (152) is located in the movable groove (17), the movable groove (17) is slidably connected with a movable block (171) from the side close to the control switch (152) to the side away from the control switch (152), the movable block (171) divides the movable groove (17) into a third cavity (172) and a fourth cavity (173) not communicating with each other, the control switch (152) is located in the third cavity (172), the movable block (171) is provided with a first spring (174) for driving the movable block (171) to move away from the control switch (152) without external force, the motor part (1) is provided with a first channel (181), the two ends of the first channel (181) are respectively connected with the first cavity (162) and the fourth cavity (173), when the pump body part (2) is completely installed on the motor part (1), the driving piece one (3) drives the moving block (161) to move towards the fourth cavity (173), and the movable block (171) is pressed on the control switch (152) and controls the electromagnet (151) to be powered off; The motor part (1) is provided with a second channel (182), and the two ends of the second channel (182) are respectively connected with the sealing groove (132) and the arc-shaped groove (16).

2. A deep-well pump according to claim 1, characterized in that: The locking piece (123) includes a plurality of second bolts (1231), one end of the second bolt (1231) penetrates through the sealing block (122) and is threadedly connected to the motor part (1).

3. A deep-well pump according to claim 1, characterized in that: The driving member one (3) comprises a plurality of second springs (31), a plurality of sleeves (32), a plurality of connecting rods (33) and a plurality of third springs (34), the plurality of sleeves (32) are slidingly connected in the annular block (22), the plurality of sleeves (32) correspond to the plurality of through holes (223) respectively, the sleeve (32) surrounds the corresponding through hole (223), the plurality of second springs (31) correspond to the plurality of sleeves (32) respectively, the second spring (31) is arranged on the sleeve (32) and is used for driving the sleeve (32) to stretch to the gap (224) away from the one end of the motor part (1) under no external force; The moving block (161) comprises a plurality of sliding blocks (1611), the sliding block (1611) is slidingly connected in the arc-shaped groove (16) along the sliding direction parallel to the moving block (161), the plurality of connecting rods (33) correspond to the plurality of sliding blocks (1611) respectively, the connecting rod (33) is fixed on the corresponding sliding block (1611) and is slidingly connected in the motor part (1) along the sliding direction parallel to the sliding block (1611), the plurality of third springs (34) correspond to the plurality of sliding blocks (1611) respectively, the third spring (34) is arranged on the corresponding sliding block (1611) and is used for driving the corresponding sliding block (1611) to move towards the second cavity (163) side under no external force, the plurality of sleeves (32) correspond to the plurality of connecting rods (33) respectively, the sliding direction of the sleeve (32) is parallel to the sliding direction of the connecting rod (33), when the pump body part (2) is installed on the motor part (1), the sleeve (32) faces the corresponding connecting rod (33), when the nut (141) fixes the pump body part (2) and the annular block (22) together, the sleeve (32) abuts against the connecting rod (33) and drives the connecting rod (33) to move towards the first cavity (162) side.

4. A deep-well pump according to claim 3, characterized in that: When the nut (141) fixes the pump body part (2) and the annular block (22) together, the projection of the nut (141) on the sleeve (32) completely covers the sleeve (32), and the nut (141) abuts against the side surface of the annular block (22) towards the pump body part (2).

5. A deep-well pump according to claim 3, characterized in that: The screw rod (14) is fixed with an extension rod (142) at the one end away from the pump body part (2), both ends of the extension rod (142) are fixed on the screw rod (14) and the side surface of the arc-shaped groove (16) away from the pump body part (2) respectively, the connecting rod (33) and the sliding block (1611) are both provided with a sliding channel (1612), the extension rod (142) penetrates the sliding channel (1612), and the connecting rod (33) and the sliding block (1611) are slidingly connected on the extension rod (142).

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