CN219974849U - Submersible pump capable of automatically adjusting water level - Google Patents

Abstract

The utility model provides an automatic water level adjusting submersible pump, which comprises a water absorption assembly and a shell assembly, wherein the water absorption assembly is arranged in the shell assembly, and a water inlet and a water outlet are formed in the shell assembly; the submersible pump further comprises a floater connected with the shell assembly, and the floater can move according to buoyancy so as to change the height of the lowest water suction level of the water inlet. According to the utility model, the floater is connected with the shell assembly, at least part of the water inlet is blocked by the floater, and the floater can move according to buoyancy, so that the height of the lowest water suction level of the water inlet and the water inlet area of the water inlet are changed, the pumping efficiency of the submersible pump is improved, and the liquid with low water level can be pumped completely.

Description

Submersible pump capable of automatically adjusting water level

Technical Field

The utility model relates to the technical field of submersible pumps, in particular to an automatic water level adjusting submersible pump.

Background

The submerged pump is a device capable of extracting groundwater to the ground surface, and plays an important role in farm irrigation, seawater lifting, fountain landscaping and the like.

The water inflow area of the water inlet of the submersible pump influences the working efficiency of the submersible pump, when the area of the water inlet is large, fluid can be sucked at a high speed, however, when the water level is low, the water inflow area of the water inlet and the minimum suction water level are large relative to the water level, the water inlet can be used for mixing gas and liquid and is sucked into the pump body, the negative pressure effect of the submersible pump can be reduced, the flow rate of the submersible pump can be reduced, and low-water-level liquid at the bottom of the submersible pump is not completely sucked.

Some submersible pumps in the prior art adopt manual adjustment to control the water inflow area of a water inlet, but the manual adjustment is troublesome, and the working condition of the submersible pump in water is difficult to determine, the submersible pump can have the conditions of electric leakage and the like, and the dangerous coefficient of the manual adjustment is higher.

In summary, the submersible pump in the prior art has a further room for improvement.

Disclosure of Invention

Aiming at the technical problems, the utility model provides an automatic water level adjusting submersible pump which can automatically adjust the water inlet area of a water inlet and the height of the minimum water absorption level according to the water level so as to ensure that water with low water level is pumped completely.

The submersible pump comprises a water absorption assembly and a shell assembly, wherein the water absorption assembly is arranged in the shell assembly, and a water inlet and a water outlet are formed in the shell assembly;

wherein the submersible pump further comprises a float connected with the housing assembly, the float being movable according to buoyancy to vary the height of the lowest suction level of the water inlet.

Compared with the prior art, the utility model has the advantages that the floater is connected with the base and at least shields part of the second water inlet, and the floater can move according to buoyancy, so that the water inlet area and the water suction level height of the water inlet are changed, the water pumping efficiency of the submersible pump is improved, and the liquid with low water level can be pumped cleanly; when the submerged pump is positioned in the liquid, the floater can float up and down according to the buoyancy of the liquid, when the water is deep, the floater floats up, the floater does not shade the water inlet or shade a small part of water inlet, the lowest water absorption level of the water inlet is increased, the water inlet area of the water inlet is large, and the bottleneck of the water inlet area is small; when water is shallow, the floater sinks, the shielding area of the floater to the water inlet is increased, the lowest water suction level height and water inlet area of the water inlet are reduced, the ground clearance of the floater is small, the amount of gas-liquid mixture entering the pump body is reduced, the suction force of the submersible pump can be ensured, and the pump can pump the water level to be lower. Thereby realizing that the pump can automatically adjust the height of the water suction level of the water inlet according to the water quantity.

Further, a limiting part is arranged on the shell assembly, a matching part is arranged on the floater, and the limiting part and the matching part act to limit the floater to move downwards.

Furthermore, the bottom of the floater is provided with supporting feet at intervals, and a channel for liquid to pass through is arranged between the supporting feet.

Further, the shell assembly comprises a base, the water inlet is positioned on the base and is divided into a first water inlet and a second water inlet, the floater is movably connected to the base, and the floater moves to change the height of the lowest water absorption level of the second water inlet;

the submersible pump further comprises a sealing ring, the sealing ring is connected to the base, and the sealing ring is used for being matched with the floater to seal and limit the floater.

Further, the float comprises a limiting ring, and the sealing ring comprises a limiting protrusion matched with the limiting ring.

Further, the sealing ring further comprises a mounting part for fixing, a limiting clamping strip is arranged on the outer wall of the base, and the limiting clamping strip limits the upper end part and the lower end part of the mounting part.

Further, the limit protrusion is arranged along the periphery of the top of the mounting part;

the outer diameter of the top of the limiting protrusion is larger than that of the top of the mounting portion.

Further, a guide rib is arranged on the outer wall of the floater.

Further, the bottom of the base is provided with a supporting rib, and the supporting rib is used for heightening the first water inlet.

Further, the distance between the first water inlet and the bottom end of the base is L1;

the lowest distance between the bottom end of the floater and the bottom end of the base is L2;

wherein L2> L1>0.

The utility model relates to an automatic water level adjusting submersible pump, which has at least the following technical effects:

through setting up the float, the buoyancy can shelter from at least partial water inlet, and the float can remove according to the size of buoyancy to change the shielding to the water inlet, change minimum water level height and the inflow area of inhaling of water inlet, reduce manual regulation, make the immersible pump have good security performance and convenience;

the limiting part is arranged on the shell assembly, the matching part is arranged on the floater, the limiting part is matched with the matching part to limit the downward movement limit of the floater, the floater is ensured to be stably connected with the shell assembly, a channel through which liquid can pass is arranged between the bottom end of the floater and the bottom end of the shell assembly, and the submerged pump is ensured to stably and effectively extract the liquid with low water level;

through setting up the sealing washer, the sealing washer is connected on the base, and the sealing washer is spacing and sealed to the float for when the liquid level is lower, when the float hardly receives buoyancy effect, the float acts on the sealing washer, and the float does not move down, guarantees the stability of the clearance between the bottom of float and the base bottom, thereby makes the immersible pump can stably, effectively extract the liquid of low water level;

through setting up the supporting pad foot in float bottom interval, the supporting pad foot can be so that have the passageway that can supply liquid to pass through between float bottom and the horizontal plane for the intake area of second water inlet can also guarantee relatively stable minimum water level when less, and the liquid that makes the low water level can continue to be inhaled in the pump body from the second water inlet.

Drawings

FIG. 1 is a schematic view of a water level automatic adjusting submersible pump according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of an automatic water level adjustment submersible pump according to an embodiment of the utility model;

FIG. 3 is a schematic cross-sectional view of a base of an embodiment of the utility model;

FIG. 4 is a partial schematic view of a float according to an embodiment of the utility model;

FIG. 5 is a schematic partial cross-sectional view of a seal ring according to an embodiment of the utility model;

FIG. 6 is a schematic cross-sectional view of a seal ring, base, float connection structure according to an embodiment of the utility model;

FIG. 7 is an enlarged schematic view of portion A of FIG. 2;

fig. 8 is an enlarged schematic view of a portion B of fig. 6.

Reference numerals: 1. the water level automatically adjusts the submersible pump;

11. a water absorbing component; 12. a housing assembly; 13. a float; 14. a seal ring; 16. a movable space; 17. a water outlet;

121. a base; 122. an outer cover; 131. a limiting ring; 132. supporting foot pads; 133. a guide rib; 141. a limit protrusion; 142. a mounting part;

1211. limiting clamping strips; 1212. a support rib; 1213. a first water inlet; 1214. and a second water inlet.

Detailed Description

In order to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present disclosure.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

The utility model is described in further detail below with reference to the accompanying drawings, see for example figures 1 to 8.

Example 1

The embodiment provides a submersible pump with automatic water level adjustment, as shown in fig. 1 to 2, which is a schematic structural diagram and a schematic sectional diagram of a submersible pump with automatic water level adjustment 1.

The automatic water level adjusting submersible pump 1 of the embodiment comprises a water absorbing component 11 and a shell component 12, wherein the water absorbing component 11 is arranged in the shell component 12, the water absorbing component 11 comprises an impeller and a motor, the motor drives the impeller to rotate, so that suction force is formed in a pump body, liquid is absorbed from a water inlet on the shell component 12, and the absorbed liquid is led out from a water outlet 17 on the shell component 12, wherein the water inlet is lower than the water outlet 17; in this embodiment, the internal connection relationship between the motor, the impeller and the housing assembly 12 is not an utility model point of the present utility model, and will not be described herein;

as shown in fig. 2 and 7, a float 13 is connected to the housing assembly 12, the float 13 can move up and down according to the buoyancy, when the float 13 moves up, the minimum water suction level of the water inlet is increased, the shielding area of the float 13 to the water inlet is reduced, the water inlet area of the water inlet is larger, and external liquid can quickly and largely enter the water level automatic regulating submersible pump 1 from the water inlet; when the float 13 moves downwards, the shielding area of the float 13 to the water inlet is increased, the minimum water suction level and the water inlet area of the water inlet are smaller, the ground clearance of the float 13 is small, the amount of gas-liquid mixture entering the pump body is reduced, and external low-water-level liquid can smoothly enter the sleep pump.

As shown in fig. 7, the housing assembly 12 includes a base 121, a water inlet is formed on the base 121, the water inlet is divided into a first water inlet 1213 and a second water inlet 1214, the first water inlet 1213 is formed in the middle of the base 121, that is, the second water inlet 1214 is formed at the outer edge of the base 121, and external liquid enters the bottom of the base 121 from the second water inlet 1214 and then enters the interior of the submersible pump 1 through the first water inlet 1213; the float 13 is connected to the base 121, and a movable space 16 accommodating the float 13 is provided on the base 121, and the float 13 moves up and down in the movable space 16. In this embodiment, as shown in fig. 2 and fig. 5 to fig. 8, the submersible pump 1 further includes a sealing ring 14, the sealing ring 14 is a basic ring shape, the sealing ring 14 is connected to the base 121, the sealing ring 14 is used for cooperating with the float 13 to seal and limit the float 13, and the sealing ring 14 is made of a flexible material, so that the sealing effect is more reliable; the sealing ring 14 is connected on the outer wall of the base 121, and the sealing ring 14 limits the downward movement limit of the floater 13, so that when the floater 13 is not subjected to buoyancy, the floater can keep relatively stable with the shell assembly 12, a channel between the bottom end of the floater 13 and the bottom end of the base 121, through which liquid can pass, is kept stable, namely the lowest water suction level of the submersible pump 1 is ensured, and the submersible pump 1 can stably and effectively extract the liquid with low water level.

In this embodiment, as shown in fig. 3, a support rib 1212 is disposed at the bottom of the base 121, and the support rib 1212 is used to raise the first water inlet 1213, and the support rib 1212 makes the first water inlet 1213 have a certain height from the horizontal plane, so as to ensure that the liquid can smoothly pass through the first water inlet 1213; there are at least two support ribs 1212, and a channel for liquid to pass through is formed between each support rib 1212, so that the liquid can flow to the first water inlet 1213.

In this embodiment, as shown in fig. 4, a guiding rib 133 is disposed on the outer wall of the float 13, the guiding rib 133 is longitudinally disposed, the guiding rib 133 protrudes outwards in a direction away from the center of the float 13, and the guiding rib 133 can reduce the contact area between the float 13 and the inner wall of the housing assembly 12 in the movable space 16, so that the friction between the outer cover 122 and the float 13 is reduced, and the float 13 moves up and down more smoothly.

In this embodiment, as shown in fig. 2 and fig. 5 to fig. 8, the float 13 includes a limiting ring 131, the sealing ring 14 includes a limiting protrusion 141 cooperating with the limiting ring 131, the limiting ring 131 is disposed on the top of the float 13, the limiting ring 131 protrudes toward the center of the float 13, when the float 13 is not subject to buoyancy, the float 13 moves down, the limiting ring 131 abuts against the limiting protrusion 141, the limiting protrusion 141 performs a limiting function on the downward movement of the float 13, so as to ensure the lowest water suction level of the second water inlet 1214; when the limit protrusion 141 is matched with the limit ring 131, the seal ring 14 can play a sealing role and can also play a limit role on the float 13.

In this embodiment, as shown in fig. 2 and fig. 5 to fig. 8, the sealing ring 14 further includes a mounting portion 142 for fixing the sealing ring 14, a limiting clamping bar 1211 is disposed on the outer wall of the base 121, the limiting clamping bar 1211 includes an upper portion and a lower portion, the mounting portion 142 is disposed in the limiting clamping bar 1211, and the limiting clamping bar 1211 limits the upper end portion and the lower end portion of the mounting portion 142, so that the mounting portion 142 can be stably placed in the limiting clamping bar 1211, and the sealing ring 14 can be ensured to be stably connected to the base 121.

In this embodiment, as shown in fig. 5 and 8, the limiting protrusion 141 is disposed along the top periphery of the mounting portion 142, the limiting protrusion 141 protrudes in the vertical direction, and the top outer diameter of the limiting protrusion 141 is greater than the top outer diameter of the mounting portion 142, so that the limiting protrusion 141 protrudes outwards and upwards, and the limiting protrusion 141 can extend out to better cooperate with the limiting ring 131; further, the bottom inner diameter of the limiting protrusion 141 is smaller than the top inner diameter of the mounting portion 142, so that a buffering space is formed between the limiting protrusion 141 and the outer wall of the base 121, when the float 13 moves down to act on the limiting protrusion 141, the limiting protrusion 141 is bent towards the outer wall of the base 121 due to the fact that the sealing ring 14 is made of flexible materials, and the buffering space enables a bending part of the limiting protrusion 141 to have a placeable space, so that sealing is more reliable.

In this embodiment, the distance between the first water inlet 1213 and the bottom end of the base 121 is L1; when the floater 13 is hardly subjected to buoyancy, the floater 13 moves downwards to the bottom limit position, and the distance between the bottom end of the floater 13 and the bottom end of the base 121 is L2; wherein L2> L1>0. That is, here, it is shown that the float 13 has a gap between the bottom end of the float 13 and the ground in a state that the reset is hardly subject to buoyancy, the gap determines the lowest suction level height of the second water inlet 1214, and the low water level liquid can pass through the gap, meanwhile, the distance between the first water inlet 1213 and the bottom end of the base 121 is greater than the distance between the first water inlet 1213 and the bottom end of the base 121 when the float 13 is reset, so that the submersible pump 1 can ensure a certain negative pressure effect when the submersible pump 1 sucks the low water level liquid, the float 13 can play a certain backflow prevention effect, and the submersible pump 1 has enough suction force to suck the low water level liquid cleanly. In this embodiment, the bottom end of the base 121 is in contact with the ground, and the horizontal plane at which the bottom end is located is referred to as the ground; in this embodiment, the bottom end of the base 121 is the bottom end of the supporting rib 1212.

Example two

The present example was a diffraction example based on the first example.

In this embodiment, as shown in fig. 4, support legs 132 are provided at intervals at the bottom of the float 13, and a channel through which liquid can pass is provided between the support legs 132, so that the float 13 can stand stably on the ground, and a channel through which liquid can pass is provided between the bottom end of the float 13 and the horizontal plane, that is, the lowest water suction level of the second water inlet 1214 is small, and meanwhile, the relative stability is ensured, so that the liquid with low water level can be continuously sucked into the pump body from the second water inlet 1214.

It should be noted that, the present embodiment can be further expanded based on the first embodiment, and the supporting feet 132 and the sealing ring 14 cooperate to enhance the stability of the float 13; alternatively to the arrangement of the sealing ring 14 in the first embodiment, the support pad 132 acts alone.

Example III

The present example was a diffraction example based on the first example.

In this embodiment, as shown in fig. 2 and 7, the housing assembly 12 includes a housing 122 and a base 121, the housing 122 is sleeved outside the base 121, the inner diameter of the bottom of the housing 122 is larger than the outer diameter of the bottom of the base 121, then a movable space 16 is formed between the base 121 and the housing 122, the movable space 16 is located between the first water inlet 1213 and the second water inlet 1214, the float 13 of the submersible pump 1 is placed in the movable space 16, the float 13 can move up and down according to the buoyancy to change the water inlet area of the second water inlet 1214, the movable space 16 limits the upward movement and the leftward and rightward movement of the float 13, when the float 13 moves up and down in the movable space 16, the shielding area of the float 13 to the second water inlet 1214 is smaller, and the minimum water suction level of the second water inlet 1214 is higher.

In this embodiment, the active space 16 is substantially annular, as is the float 13.

In this embodiment, a limiting part is disposed on the housing assembly 12, and a matching part is disposed on the float 13 to limit the float 13 from moving downwards, and the limiting part acts with the matching part to limit the float 13 from moving downwards, so that the lowest water absorption capacity of the second water inlet 1214 can be ensured, and the low water level liquid can enter the submersible pump 1 from the second water inlet 1214; the limiting part can be arranged on the inner wall of the outer cover 122 and also can be arranged on the outer wall of the base 121, and can be integrally formed with the shell component 12, and the limiting part and the matching part act to limit the downward movement of the float 13, so that the action principle is the same as that of the sealing ring 14 in the first embodiment to limit the float 13, and the description is omitted here.

This embodiment is not made in the drawings of the specification, but a person skilled in the art can obtain a corresponding effect after referring to the relevant drawings in the first embodiment.

It should be noted that, in this embodiment, the support foot 132 in the second embodiment may be added to enhance the stability of the float 13 under the combined action.

Example IV

The present example was a diffraction example based on the first example.

In this embodiment, a connection column connected with the float 13 may be disposed on the base 121, so as to limit the downward movement of the float 13, the top of the float 13 is slidably connected with the base 121, the base 121 is provided with a connection column, the top of the base 121 is connected with the connection column, the length of the connection column is the length of the float 13 moving up and down, and the float 13 can move up and down along the connection column; the description is not made here in the drawings, but a person skilled in the art will be able to bring about the corresponding effects on the basis of the written description.

Example five

In this embodiment, the float 13 includes a float ball and a sliding plate, the sliding plate is fixedly connected with the float ball, the sliding plate is located at the second water inlet 1214, the sliding plate can shield at least part of the second water inlet 1214, the float ball is acted by a floating force, the floating ball drives the sliding plate to move upwards, the shielding area of the sliding plate to the second water inlet 1214 is reduced, the minimum water suction level of the second water inlet 1214 is increased, and the submersible pump 1 can quickly suck a large amount of external liquid; when the floating ball is not subject to the buoyancy, the sliding plate moves downwards, the water inlet area of the second water inlet 1214 and the height of the lowest water suction level are reduced, and the submersible pump 1 can suck liquid with low water level.

Further, a limiting hole is formed in the shell assembly 12, the limiting hole is formed in the vertical direction of the shell assembly 12, and the floating ball penetrates through the upper portion of the limiting hole; correspondingly, a limiting part for limiting the sliding plate to move downwards is arranged on the shell assembly 12, so that the lowest water absorption capacity of the second water inlet 1214 can be ensured; in this embodiment, the limiting portion may limit the downward movement of the sliding plate in combination with the downward movement of the float 13 in any one of the first to fourth embodiments.

Further, the limiting hole is formed on the side wall of the housing assembly 12, and the float 13 can move up and down along the side wall of the housing assembly 12 to drive the sliding plate to move up and down.

The present embodiment is not made in the drawings of the specification, but a person skilled in the art can obtain the corresponding effects according to the written description.

Example six

This embodiment further varies the arrangement of the second water inlet 1214 based on any of the embodiments described above.

The second water inlet 1214 includes an upper water inlet and a lower water inlet, the upper water inlet can be blocked by the float 13, and the blocking height of the upper water inlet by the float 13 determines the lowest water suction level of the second water inlet 1214; the upper water inlet is in any shape, such as round hole shape, rectangular shape, irregular shape, etc.

In the present embodiment, the float 13 can shield only the upper water inlet, so that the lowest water absorption level of the second water inlet 1214 can be stably maintained.

The present embodiment is not shown in the drawings of the specification, but a person skilled in the art can obtain the corresponding effects from the text description.

The following is a procedure for using the submersible pump according to one embodiment of the present utility model:

as shown in fig. 2, when the submersible pump 1 is in a high water level, when the external liquid flows into the submersible pump 1 under the action of suction force, the float 13 floats upwards under the action of buoyancy force, the float 13 does not shade the second water inlet 1214 or shade the second water inlet 1214 less, the lowest suction water level of the second water inlet 1214 is higher, the water inlet area of the second water inlet 1214 is larger, and the external liquid can rapidly and largely pass through the second water inlet 1214, then flows into the submersible pump 1 from the first water inlet 1213 in the middle of the base 121, and then flows out from the water outlet 17 of the submersible pump 1;

when the external liquid is gradually pumped, the water level gradually decreases, the buoyancy force borne by the floater 13 gradually decreases until almost none of the water level is reached, the shielding area of the floater 13 to the second water inlet 1214 is maximum, the lowest water suction level of the second water inlet 1214 is lower, the water inlet area of the second water inlet 1214 is minimum, the ground clearance of the floater 13 is small, the amount of gas-liquid mixture entering the pump body is reduced, the suction force of the submersible pump 1 can be ensured, and the submersible pump 1 can be ensured to pump water with low water level cleanly.

In the present utility model, the water level automatic adjusting submersible pump 1 is briefly described as a submersible pump 1.

The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description of the utility model that follows may be better understood, and in order that the present utility model may be better understood. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The submersible pump with the automatic water level adjustment function is characterized by comprising a water absorption assembly (11) and a shell assembly (12), wherein the water absorption assembly (11) is arranged in the shell assembly (12), and a water inlet and a water outlet (17) are formed in the shell assembly (12);

wherein the submersible pump (1) further comprises a float (13) connected with the housing assembly (12), the float (13) being movable according to buoyancy to vary the height of the lowest suction level of the water inlet.

2. An automatically adjusting water level submersible pump as recited in claim 1, wherein,

the shell assembly (12) is provided with a limiting part, the floater (13) is provided with a matching part, and the limiting part and the matching part act to limit the downward movement of the floater (13).

3. An automatically adjusting water level submersible pump as recited in claim 1, wherein,

support feet (132) are arranged at the bottom of the floater (13) at intervals, and channels for liquid to pass through are arranged between the support feet (132).

4. An automatically adjusting water level submersible pump as recited in claim 1, wherein,

the shell assembly (12) comprises a base (121), the water inlet is arranged on the base (121) and is divided into a first water inlet (1213) and a second water inlet (1214), the floater (13) is movably connected on the base (121), and the floater (13) moves to change the height of the lowest water suction level of the second water inlet (1214);

the submersible pump (1) further comprises a sealing ring (14), the sealing ring (14) is connected to the base (121), and the sealing ring (14) is used for being matched with the floater (13) to seal and limit the floater (13).

5. The automatic water level adjusting submersible pump of claim 4, wherein,

the float (13) comprises a limiting ring (131), and the sealing ring (14) comprises a limiting protrusion (141) matched with the limiting ring (131).

6. The automatic water level adjusting submersible pump of claim 5, wherein,

the sealing ring (14) further comprises a mounting part (142) for fixing, a limiting clamping strip (1211) is arranged on the outer wall of the base (121), and the limiting clamping strip (1211) limits the upper end part and the lower end part of the mounting part (142).

7. The automatic water level adjusting submersible pump of claim 6, wherein,

the limit protrusion (141) is arranged along the top periphery of the mounting part (142);

the outer diameter of the top of the limiting protrusion (141) is larger than that of the top of the mounting portion (142).

8. An automatically water level adjusting submersible pump according to any one of claims 1 to 7,

the outer wall of the floater (13) is provided with a guide rib (133).

9. An automatically adjusting water level submersible pump according to any one of claims 4 to 7,

the bottom of the base (121) is provided with a supporting rib (1212), and the supporting rib (1212) is used for heightening the first water inlet (1213).

10. An automatically adjusting water level submersible pump according to any one of claims 4 to 7,

the distance between the first water inlet (1213) and the bottom end of the base (121) is L1;

the lowest distance between the bottom end of the floater (13) and the bottom end of the base (121) is L2;

wherein L2> L1>0.