Submersible pump

Abstract

The application relates to the technical field of submersible pumps, and a submersible pump comprises a submersible pump body, a fixing plate and a circuit board, the submersible pump body is embedded with a bearing seat, the circuit board is fixedly connected to the fixing plate, the fixing plate is provided with a first connecting hole, the bearing seat is provided with a first fixing hole on the side close to the upper end of the submersible pump body, and the first connecting hole is used for allowing a screw to pass through and be threadedly connected with the first fixing hole. The circuit board is fixedly connected to the fixing plate, the screw passes through the first connecting hole and is threadedly connected with the first fixing hole, the detachable connection of the fixing plate and the bearing seat is realized, the connection of the circuit board and the bearing seat is further realized, the installation of the circuit board is realized, the stability of the connection of the circuit board and the pump body is improved, and the reliability of the submersible pump is improved.

Description

Technical Field

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

[0002] A typical submersible pump consists of a pump body with a built-in impeller and a motor that drives the impeller. The pump body has an outlet and an inlet. When working, water enters the pump body through the inlet, is accelerated by the impeller, and is then ejected from the outlet.

[0003] To maximize the efficiency of the impeller, a frequency converter is typically used to increase the motor speed. The frequency converter includes a circuit board and a rectifier bridge, IPM module, chip, capacitor, etc. mounted on the circuit board.

[0004] Existing submersible pumps typically place the circuit board inside the pump body. However, to reduce the impact of the circuit board, it is usually fixed with glue. But the pump body is relatively small, and the heat generated by the motor can easily cause the glue to fail, resulting in the circuit board colliding with the inner wall of the pump body and damaging the circuit board. Utility Model Content

[0005] In order to improve the stability of the connection between the circuit board and the pump body and improve the reliability of the submersible pump, this application provides a submersible pump.

[0006] The submersible pump provided in this application adopts the following technical solution: A submersible pump includes a submersible pump body, a fixing plate, and a circuit board. The submersible pump body has a bearing seat embedded in it. The circuit board is fixedly connected to the fixing plate. The fixing plate has a first connecting hole. The bearing seat has a first fixing hole on the side near the upper end of the submersible pump body. The first connecting hole is used for a screw to pass through and be threaded into the first fixing hole.

[0007] By adopting the above technical solution, the circuit board is fixedly connected to the fixing plate, and the screw passes through the first connecting hole and is threaded to the first fixing hole, so as to realize the detachable connection between the fixing plate and the bearing seat, thereby realizing the connection between the circuit board and the bearing seat, realizing the installation of the circuit board, improving the stability of the connection between the circuit board and the pump body, and improving the reliability of the submersible pump.

[0008] Preferably, the submersible pump body includes a top cover, a housing, a pump body, a rotating shaft, and an impeller. The housing has a mounting cavity, and the lower end of the top cover is connected to an upper embedding part, which is embedded in the mounting cavity. An abutment ring is connected to the wall of the mounting cavity. The bearing seat abuts against the abutment ring on the side away from the circuit board and against the side of the top cover. The upper embedding part abuts against the side of the bearing seat near the circuit board. The upper end of the pump body is connected to a lower embedding part, which is embedded in the mounting cavity. The pump body has a working cavity. The working cavity has an inlet on the side wall away from the housing, which is connected to the outside. The working cavity has an outlet channel on the wall, and an outlet on the inner wall of the outlet channel away from the working cavity, which is connected to the outside. The rotating shaft is coaxially rotatably embedded in the mounting cavity, and the lower end of the rotating shaft extends into the working cavity. The impeller is rotatably embedded in the working cavity and coaxially connected to the outer circumference of the rotating shaft.

[0009] By adopting the above technical solution, the submersible pump body is composed of a top cover, outer shell, pump body, rotating shaft and impeller. The upper embedded part is embedded in the mounting cavity of the outer shell, and the upper embedded part and the abutment ring abut against both sides of the bearing seat, reducing the possibility of the bearing seat moving along the axis of the outer shell when the submersible pump is working, and improving the reliability of the submersible pump.

[0010] Preferably, it also includes a water outlet connector, one end of which is threaded into the liquid outlet, and the other end of which is used for connection to an external pipeline.

[0011] By adopting the above technical solution, one end of the water outlet connector is threaded into the liquid outlet, and the other end is connected to an external pipeline, which facilitates the connection of the submersible pump to an external pipeline and improves the convenience of the submersible pump.

[0012] Preferably, it also includes a first sealing ring and a second sealing ring. The outer wall of the upper embedded part is provided with an upper sealing groove, the first sealing ring is embedded in the upper sealing groove, and the outer wall of the first sealing ring abuts against the wall of the mounting cavity. The outer wall of the lower embedded part is provided with a lower sealing groove, the second sealing ring is embedded in the lower sealing groove, and the outer wall of the second sealing ring abuts against the wall of the mounting cavity.

[0013] By adopting the above technical solution, the first sealing ring is embedded in the upper sealing groove and the second sealing ring is embedded in the lower sealing groove, which reduces the possibility of external liquid entering the mounting cavity through the gap between the upper embedded part and the mounting cavity wall or the gap between the lower embedded part and the mounting cavity wall, thus preventing damage to the circuit board, improving the sealing performance of the submersible pump, and improving the reliability of the submersible pump.

[0014] Preferably, the mounting plate has an annular groove on the outer periphery of the side away from the abutment ring, and the upper embedding part has a receiving groove at the end near the mounting plate. The end of the upper embedding part near the abutment ring abuts the bottom of the annular groove, and the wall of the receiving groove fits against the wall of the annular groove.

[0015] By adopting the above technical solution, the upper embedded part is provided with a receiving groove to provide space for the circuit board, and the mounting plate is provided with an annular groove. The groove wall of the annular groove fits with the groove wall of the receiving groove, reducing the possibility of the mounting plate moving along the direction perpendicular to the axis of the mounting plate and improving the reliability of the submersible pump.

[0016] Preferably, the submersible pump body further includes a base, which is connected to the lower end of the pump body and covers the liquid inlet. The end of the base near the pump body is provided with a cavity, and the cavity wall and bottom are evenly distributed with a plurality of liquid inlet holes.

[0017] By adopting the above technical solution and setting a base, the liquid entering the working chamber is filtered, reducing the possibility of impurities carried in the liquid damaging the shaft or impeller and improving the service life of the submersible pump.

[0018] Preferably, a first convex ring is connected to the outer periphery of the base away from the pump body, and a plurality of reinforcing ribs are connected to the outer periphery of the pump body. The plurality of reinforcing ribs are distributed at intervals along the circumference of the base, and the reinforcing ribs extend from the outer wall of the base to the first convex ring.

[0019] By adopting the above technical solution, the outer periphery of the base is connected with reinforcing ribs, which improves the overall structural strength of the base and extends the service life of the submersible pump.

[0020] Preferably, the submersible pump body further includes a handle, which is connected to the upper end of the top cover. There are two handles, which are symmetrically distributed along the axis perpendicular to the top cover.

[0021] By adopting the above technical solution, the handle is located at the top of the top cover and is designed to be symmetrically distributed along the axis perpendicular to the top cover, which facilitates the handling of the submersible pump.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The circuit board is fixedly connected to the fixing plate. The screw passes through the first connecting hole and is threaded into the first fixing hole to realize the detachable connection between the fixing plate and the bearing seat, thereby realizing the connection between the circuit board and the bearing seat, realizing the installation of the circuit board, improving the stability of the connection between the circuit board and the pump body, and improving the reliability of the submersible pump. 2. One end of the water outlet connector is threaded into the liquid outlet, and the other end is for connecting to an external pipeline, which can facilitate the connection of the submersible pump to an external pipeline and improve the convenience of the submersible pump; 3. A base is installed to filter the liquid entering the working chamber, reducing the possibility of impurities in the liquid damaging the shaft or impeller and improving the service life of the submersible pump. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a submersible pump.

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0025] Figure 3 This is a schematic diagram of a submersible pump.

[0026] Figure 4 This is a cross-sectional view of a submersible pump.

[0027] Figure 5 This is an exploded structural diagram of the bearing housing, mounting plate, and circuit board.

[0028] Figure 6 This is a schematic diagram of the structure of the fixing plate and circuit board in another embodiment.

[0029] Figure 7 yes Figure 4 Enlarged view of point B in the middle.

[0030] Figure 8 yes Figure 4 Enlarged view of point C in the middle.

[0031] Figure 9 This is a partial sectional view of a submersible pump.

[0032] Explanation of reference numerals in the attached figures: 1. Submersible pump body; 11. Housing; 111. Mounting cavity; 112. Abutment ring; 113. Lower step groove; 114. Upper step groove; 115. Upper connecting hole; 116. Lower connecting hole; 12. Pump body; 121. Lower embedded part; 1211. Lower sealing groove; 1212. Lower fixing hole; 1213. Lower recess; 1214. Lower mounting groove; 1215. Fifth step groove; 122. Working cavity; 123. Liquid inlet; 124. Liquid outlet channel; 125. Liquid outlet; 126. Second fixing hole; 13. Bearing seat; 131. First fixing hole; 132. Ring groove; 133. Upper mounting groove; 14. Top cover; 141. Upper embedded part; 1411. Third step groove; 1412. Receiving groove; 1413. Upper sealing groove; 1414. First... 1415. Groove; 1416. Upper fixing hole; 142. Fourth step groove; 143. Third fixing hole; 15. Base; 151. Cavity; 152. Liquid inlet hole; 153. First convex ring; 154. Reinforcing rib; 155. Second convex ring; 1551. Second connecting hole; 16. Positioning ring; 161. Positioning convex ring; 162. Chamfer; 17. Locking bolt; 18. Rotating shaft; 19. Impeller; 110. Bearing; 1101. Protective cover; 11011. First step groove; 11012. Second step groove; 11013. Fourth connecting hole; 1102. Handle; 11021. Fixing part; 110211. Second groove; 110212. Third connecting hole; 110213. Third groove; 11022. Grip part; 2. Fixing plate; 21. First connecting hole; 3. Circuit board; 31. Clearance hole; 4. First sealing ring; 5. Second sealing ring; 6. Water outlet connector; 61. Limiting ring; 62. Mounting block. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] Reference Figure 1 This application discloses a submersible pump including a submersible pump body 1. The submersible pump body 1 includes a housing 11 and a pump body 12. The housing 11 is coaxially provided with a mounting cavity 111. The mounting cavity 111 is provided with a lower step groove 113 at one end of the cavity wall along the axis of the housing 11. The upper end of the pump body 12 is fixedly connected with a lower embedding part 121, which is embedded in the lower step groove 113.

[0035] Reference Figure 1 and Figure 2A submersible pump also includes a second sealing ring 5. A fifth step groove 1215 is provided on the outer periphery of the lower embedded part 121 away from the pump body 12. The bottom of the fifth step groove 1215 abuts against the bottom of the lower step groove 113. A lower sealing groove 1211 is provided on the wall of the fifth step groove 1215. The second sealing ring 5 is embedded in the lower sealing groove 1211, and the outer wall of the second sealing ring 5 abuts against the wall of the mounting cavity 111.

[0036] Reference Figure 1 and Figure 3 A submersible pump also includes a water outlet connector 6. The pump body 12 has a working chamber 122. A liquid inlet 123 is located on the side of the working chamber 122 away from the lower embedded portion 121, and the liquid inlet 123 communicates with the outside. A liquid outlet channel 124 is located on the wall of the working chamber 122. A liquid outlet 125 is located inside the liquid outlet channel 124 on the side away from the working chamber 122 and closer to the outer casing 11, and the liquid outlet 125 communicates with the outside. One end of the water outlet connector 6 is threaded into the liquid outlet 125, and the other end is used for connection to an external pipe. A limiting ring 61 is coaxially fixedly connected to the outer periphery of the water outlet connector 6. The limiting ring 61 abuts against the surface of the pump body 12 near the outer casing 11. A mounting block 62 is coaxially fixedly connected to the outer periphery of the water outlet connector 6. The mounting block 62 is located on the side of the limiting ring 61 away from the pump body 12, and the cross-section of the mounting block 62 is hexagonal. In this embodiment, the water outlet connector 6 is made of plastic or metal.

[0037] The submersible pump body 1 also includes a base 15, which is fixedly connected to the lower end of the pump body 12 and covers the liquid inlet 123. A cavity 151 is provided at one end of the base 15 near the pump body 12, and the cavity wall of the cavity 151 is flush with the inner wall of the liquid inlet 123. A plurality of liquid inlet holes 152 are evenly distributed on the cavity wall and bottom of the cavity 151, and the liquid inlet holes 152 are connected to the outside.

[0038] Reference Figure 3 and Figure 4The pump body 12 has several second fixing holes 126 at its lower end, which are circumferentially spaced around the inlet 123 axis. In this embodiment, there are four second fixing holes 126, which are evenly distributed circumferentially around the inlet 123 axis. A second protruding ring 155 is coaxially fixedly connected to the outer periphery of the base 15 near the pump body 12. The second protruding ring 155 has several second connecting holes 1551, which are the same number as the number of second fixing holes 126 and correspond one-to-one. The second connecting holes 1551 are used for bolts to pass through and be threaded into the second fixing holes 126. A first protruding ring 153 is fixedly connected to the outer periphery of the base 15 away from the pump body 12. Several reinforcing ribs 154 are fixedly connected to the outer periphery of the base 15. The reinforcing ribs 154 extend from the outer wall of the base 15 to the surface of the first protruding ring 153 near the pump body 12, and are circumferentially spaced around the axis of the base 15. In this embodiment, there are eight reinforcing ribs 154, which are evenly distributed around the axis of the base 15.

[0039] Reference Figure 1 and Figure 5 A submersible pump also includes a fixing plate 2 and a circuit board 3. An abutment ring 112 is connected to the cavity wall of the mounting cavity 111 on the side away from the pump body 12. The submersible pump body 1 also includes a bearing seat 13, which is embedded in the mounting cavity 111. One surface of the bearing seat 13 abuts against the surface of the abutment ring 112 on the side away from the pump body 12. The fixing plate 2 is fixedly connected to the circuit board 3 and to the end of the bearing seat 13 away from the pump body 12. Two first fixing holes 131 are provided on the side of the bearing seat 13 away from the pump body 12, symmetrically distributed along the length of the fixing plate 2. The fixing plate 2 also has first connecting holes 21, the number of which is the same as the number of first fixing holes 131 and corresponds one-to-one. The first connecting holes 21 are used for screws to pass through and be threaded into the first fixing holes 131. In this embodiment, the circuit board 3 is fixedly connected to one side of the fixing plate 2 along the sliding direction of the fixing plate 2. The circuit board 3 is provided with clearance holes 31, the number of clearance holes 31 is the same as the number of first connecting holes 21 and they correspond one-to-one. The clearance holes 31 are used for the head of the screw to be inserted. The control voltage of the circuit board 3 is 12~100V.

[0040] Reference Figure 6 In another embodiment, the fixing plate 2 is U-shaped and the circuit board 3 is L-shaped.

[0041] Reference Figure 4 and Figure 7A submersible pump also includes a first sealing ring 4, and the submersible pump body 1 also includes a top cover 14. An upper stepped groove 114 is provided on the cavity wall of the mounting cavity 111 at the end away from the pump body 12. The top cover 14 is fixedly connected to the end of the outer casing 11 away from the pump body 12. The outer wall of the top cover 14 is flush with the end of the outer casing 11 away from the pump body 12. An upper embedded part 141 is fixedly connected to the end of the top cover 14 near the outer casing 11. The upper embedded part 141 is embedded in the upper stepped groove 114. A third stepped groove 1411 is provided on the outer periphery of the end of part 141 away from the top cover 14. The bottom of the third stepped groove 1411 abuts against the bottom of the upper stepped groove 114. An annular groove 132 is provided on the outer periphery of the end of bearing seat 13 away from the abutting ring 112. The end of upper embedded part 141 away from the top cover 14 abuts against the bottom of the groove of annular groove 112. A receiving groove 1412 is provided on the end of upper embedded part 141 away from the top cover 14. The wall of receiving groove 1412 fits against the wall of annular groove 132. An upper sealing groove 1413 is provided on the wall of the third stepped groove 1411. A first sealing ring 4 is embedded in the upper sealing groove 1413, and the outer wall of the first sealing ring 4 abuts against the wall of mounting cavity 111. A first groove 1414 is provided on the wall of the third stepped groove 1411. The first groove 1414 is annular and located on the side of upper sealing groove 1413 away from abutting ring 112. In this embodiment, there is one first groove 1414.

[0042] In another embodiment, two first grooves 1414 are provided, and the two first grooves 1414 are distributed at intervals along the axis of the upper embedding portion 141.

[0043] The submersible pump body 1 also includes a positioning ring 16 and a locking bolt 17. A plurality of upper fixing holes 1415 are provided on the outer wall of the upper embedded part 141. The axes of the upper fixing holes 1415 are perpendicular to the axis of the upper embedded part 141, and are coplanar with the axis of the upper embedded part 141. The plurality of upper fixing holes 1415 are circumferentially spaced around the axis of the upper embedded part 141. In this embodiment, four upper fixing holes 1415 are provided, and the four upper fixing holes 1415 are evenly distributed circumferentially around the axis of the upper embedded part 141. An upper groove 1416 is provided on the hole wall at the end of the upper fixing hole 1415 away from the axis of the upper embedded part 141. An upper connecting hole 115 is provided on the groove wall of the upper stepped groove 114. The number of upper connecting holes 115 is the same as the number of upper fixing holes 1415 and corresponds one-to-one.

[0044] Reference Figure 8The lower step groove 113 has a lower connecting hole 116 on its groove wall. The number of lower connecting holes 116 is the same as the number of upper connecting holes 115 and they correspond one-to-one. The axis of the lower connecting hole 116 is parallel to and coplanar with the axis of the corresponding upper connecting hole 115. The lower insert 121 has a lower fixing hole 1212 on its outer wall. The number of lower fixing holes 1212 is the same as the number of lower connecting holes 116 and they correspond one-to-one. The lower fixing hole 1212 has a lower insert groove 1213 on the end of its hole wall away from the axis of the lower insert 121. There are also positioning rings 16 and 17 locking bolts. The number of holes is the same as the sum of the number of upper connecting holes 115 and lower connecting holes 116, and they correspond one-to-one. One end of the positioning ring 16 is embedded in the upper groove 1416 and the lower groove 1213, and the outer wall of the positioning ring 16 is in contact with the groove walls of the upper groove 1416 and the lower groove. The end of the positioning ring 16 away from the bottom of the lower groove 1213 is coaxially fixedly connected to a positioning protrusion ring 161, which is embedded in the upper connecting hole 115 and the lower connecting hole 116. The outer wall of the positioning protrusion ring 161 is in contact with the hole walls of the upper connecting hole 115 and the lower connecting hole 116. The interior of the positioning ring 16 near the positioning protrusion ring 161 is provided with a chamfer 162. The shank of the locking bolt 17 passes through the positioning ring 16 and is threadedly connected to the upper fixing hole 1415 and the lower fixing hole 1212. The head of the locking bolt 17 abuts against the chamfer 162.

[0045] Reference Figure 4 The submersible pump body 1 also includes a rotating shaft 18, an impeller 19, and bearings 110. The rotating shaft 18 is coaxially rotatably embedded in the mounting cavity 111. The bearing housing 13 is coaxially provided with an upper mounting groove 133 on the side near the pump body 12, and a lower mounting groove 1214 is coaxially provided at the end of the lower embedded part 121 away from the pump body 12. There are two bearings 110, which are respectively embedded in the upper mounting groove 133 and the lower mounting groove 1214. The rotating shaft 18 is embedded in the two bearings 110. The end of the rotating shaft 18 away from the bearing housing 13 extends into the working cavity 122, and the impeller 19 is rotatably embedded in the working cavity 122. The impeller 19 is coaxially fixedly connected to the outer circumference of the rotating shaft 18.

[0046] Reference Figure 1 and Figure 9The submersible pump body 1 also includes a protective cover 1101 and a handle 1102. One end of the protective cover 1101 is provided with a first stepped groove 11011. The end of the top cover 14 away from the upper embedded part 141 is embedded in the first stepped groove 11011. The outer periphery of the end of the top cover 14 away from the upper embedded part 141 is provided with a fourth stepped groove 142. The wall of the fourth stepped groove 142 fits against the wall of the first stepped groove 11011. A second stepped groove 11012 is provided at the wall of the first stepped groove 11011 away from the bottom. The wall of the second stepped groove 11012 fits against the outer wall of the outer casing 11. The handle 1102 is fixedly connected to the end of the protective cover 1101 away from the outer shell 11. There are two handles 1102, which are symmetrically distributed along the axis perpendicular to the protective cover 1101. The handle 1102 includes a fixing part 11021 and a gripping part 11022. A second groove 110211 is provided on one side of the fixing part 11021. The end of the protective cover 1101 away from the outer shell 11 is in contact with the bottom of the second groove 110211, and the outer wall of the protective cover 1101 is in contact with the wall of the second groove 110211. The bottom of the second groove 110211 is provided with a third connecting hole 110212. There are two third connecting holes 110212, which are symmetrically distributed along the length of the fixing part 11021. The protective cover 1101 is provided with a fourth connecting hole 11013. The number of fourth connecting holes 11013 is the same as the number of third connecting holes 110212 and they correspond one-to-one. The fourth connecting hole 11013 is connected to the first stepped groove 11011. The top cover 14 is away from the upper... One end of the insert portion 141 is provided with a third fixing hole 143. The number of third fixing holes 143 is the same as the number of fourth connecting holes 11013 and they correspond one-to-one. The shank of the bolt passes through the third connecting hole 110212 and the fourth connecting hole 11013 in sequence and is threaded into the third fixing hole 143. A third groove 110213 is provided on the wall of the third connecting hole 110212 away from the second groove 110211. The third groove 110213 is used for the head of the bolt to be inserted. The grip portion 11022 is arc-shaped, and both ends of the grip portion 11022 are fixedly connected to the side of the fixing portion 11021 away from the other handle 1102.

[0047] The implementation principle of a submersible pump according to an embodiment of this application is as follows: the lower embedding part 121 is embedded in the lower stepped groove 113, so that the lower connecting hole 116 is aligned with the lower fixing hole 1212. The positioning ring 16 passes through the lower connecting hole 116 and is embedded in the lower embedding groove 1213. The positioning protrusion ring 161 is embedded in the lower connecting hole 116. The locking bolt 17 passes through the positioning ring 16 and is threaded into the lower fixing hole 1212, thereby achieving a fixed connection between the pump body 12 and the outer casing 11. The bearing 110 is embedded in the lower mounting groove 1214. The rotating shaft 18 passes through the bearing 110 and extends into the working chamber 122. The impeller 19 is connected to the outer periphery of the end of the rotating shaft 18 that extends into the working chamber 122. The base 15 is connected to the lower end of the pump body 12. The bolt passes through the second connecting hole 1551 and is threaded into the second fixing hole 126, thereby achieving a fixed connection between the base 15 and the pump body 12.

[0048] The fixing plate 2 is connected to the side of the bearing seat 13 away from the upper mounting groove 133. The first connecting hole 21 is aligned with the first fixing hole 131. The screw passes through the first connecting hole 21 and is threaded into the first fixing hole 131, thus fixing the fixing plate 2, the circuit board 3, and the bearing seat 13. The bearing 110 is sleeved on the outer circumference of the rotating shaft 18. The bearing seat 13 is embedded in the mounting cavity 111 and abuts against the abutment ring 112. The bearing 110 is embedded in the upper mounting groove 133. The upper embedding part 141 is embedded in the upper stepped groove 114, so that the upper connecting hole 115 is aligned with the upper fixing hole 1415. The positioning ring 16 passes through the upper connecting hole 115 and is embedded in the upper embedding groove 1416. The positioning protrusion ring 161 is embedded in the upper connecting hole 115. The locking bolt 17 passes through the positioning ring 16 and is threaded into the upper fixing hole 1415, thus fixing the pump body 12 and the top cover 14. The protective cover 1101 is connected to the end of the top cover 14 away from the outer shell 11. The end of the top cover 14 away from the upper embedded part 141 is in contact with the bottom of the first stepped groove 11011. The handle 1102 is connected to the end of the protective cover 1101 away from the outer shell 11. The protective cover 1101 is embedded in the third groove. The bolt passes through the third connecting hole 110212 and the fourth connecting hole 11013 and is threaded to the third fixing hole 143 to realize the fixed connection of the handle 1102, the protective cover 1101 and the top cover 14.

[0049] 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 submersible pump, characterized in that: The system includes a submersible pump body (1), a fixing plate (2), and a circuit board (3); the submersible pump body (1) has a bearing seat (13) embedded in it; the circuit board (3) is fixedly connected to the fixing plate (2); the fixing plate (2) is provided with a first connecting hole (21); the bearing seat (13) is provided with a first fixing hole (131) on the side near the upper end of the submersible pump body (1); the first connecting hole (21) is used for screws to pass through and be threaded into the first fixing hole (131).

2. The submersible pump according to claim 1, characterized in that: The submersible pump body (1) includes a top cover (14), a housing (11), a pump body (12), a rotating shaft (18), and an impeller (19); the housing (11) is provided with a mounting cavity (111); the lower end of the top cover (14) is connected to an upper embedding part (141); the upper embedding part (141) is embedded in the mounting cavity (111); an abutment ring (112) is connected to the cavity wall of the mounting cavity (111); the side of the bearing seat (13) away from the circuit board (3) abuts against the side of the abutment ring (112) near the top cover (14); the upper embedding part (141) abuts against the side of the bearing seat (13) near the circuit board (3); the upper end of the pump body (12) is connected to a lower embedding part (121); the lower embedding part (121) is embedded in the mounting cavity (19). Inside the cavity (111); the pump body (12) is provided with a working cavity (122); the working cavity (122) is provided with an inlet (123) on the side wall away from the outer shell (11); the inlet (123) is connected to the outside; the working cavity (122) is provided with an outlet channel (124) on the wall; the outlet channel (124) is provided with an outlet (125) on the inner wall away from the working cavity (122); the outlet (125) is connected to the outside; the rotating shaft (18) is coaxially rotatably embedded in the mounting cavity (111); the lower end of the rotating shaft (18) extends into the working cavity (122); the impeller (19) is rotatably embedded in the working cavity (122); the impeller (19) is coaxially connected to the outer circumference of the rotating shaft (18).

3. The submersible pump according to claim 2, characterized in that: It also includes a water outlet connector (6); one end of the water outlet connector (6) is threaded into the liquid outlet (125); the other end of the water outlet connector (6) is used for connection to an external pipeline.

4. The submersible pump according to claim 2, characterized in that: It also includes a first sealing ring (4) and a second sealing ring (5); an upper sealing groove (1413) is provided on the outer wall of the upper embedded part (141); the first sealing ring (4) is embedded in the upper sealing groove (1413); the outer wall of the first sealing ring (4) abuts against the cavity wall of the mounting cavity (111); a lower sealing groove (1211) is provided on the outer wall of the lower embedded part (121); the second sealing ring (5) is embedded in the lower sealing groove (1211); the outer wall of the second sealing ring (5) abuts against the cavity wall of the mounting cavity (111).

5. The submersible pump according to claim 2, characterized in that: The mounting plate has an annular groove (132) on the outer periphery of the side away from the abutment ring (112); the upper embedding part (141) has a receiving groove (1412) at one end near the mounting plate; the upper embedding part (141) abuts the bottom of the groove of the ring (112) at one end near the abutment ring (112); the groove wall of the receiving groove (1412) fits against the groove wall of the annular groove (132).

6. The submersible pump according to claim 2, characterized in that: The submersible pump body (1) also includes a base (15); the base (15) is connected to the lower end of the pump body (12) and covers the liquid inlet (123); the base (15) has a cavity (151) at one end near the pump body (12); the cavity (151) has several liquid inlet holes (152) evenly distributed on the cavity wall and the cavity bottom.

7. The submersible pump according to claim 6, characterized in that: The outer periphery of the base (15) away from the pump body (12) is connected to a first protruding ring (153); the outer periphery of the pump body (12) is connected to a plurality of reinforcing ribs (154); the plurality of reinforcing ribs (154) are distributed at intervals along the circumference of the base (15); the reinforcing ribs (154) extend from the outer wall of the base (15) to the first protruding ring (153).

8. The submersible pump according to claim 2, characterized in that: The submersible pump body (1) also includes a handle (1102); the handle (1102) is connected to the upper end of the top cover (14); there are two handles (1102); the two handles (1102) are symmetrically distributed along the axis perpendicular to the top cover (14).

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