CN215333476U

CN215333476U - Household submersible pump

Info

Publication number: CN215333476U
Application number: CN202120563611.2U
Authority: CN
Inventors: 王刚; 王延地; 周汉杰
Original assignee: Forcome Qingdao Co ltd
Current assignee: Forcome Qingdao Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-12-28
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to a household submersible pump, which comprises a pump body, a pump seat and a water level detection device, wherein an electric cavity is arranged in the pump body, and a circuit board is arranged in the electric cavity; a water outlet is arranged at the rear side of the pump seat; the water level detection device is installed at the bottom of the pump base and electrically connected with the circuit board, wherein the water level detection device comprises a first probe, a second probe and a third probe, the first probe and the second probe are located on one side of the water outlet, the third probe is located on the other side of the water outlet, the length of the second probe is smaller than that of the first probe, and the first probe and the third probe are consistent in length. The operation of the pump is protected in all directions by the arrangement of three probes for sensing the water level and the ingenious spatial layout, and the perfect control of the pump in a special abnormal state is filled; the 360-degree induction response mode solves the problem that the control system can only work in the standing state of the pump station and is invalid in the dumping state; the cost is not greatly increased; the failure risk of the pump is greatly reduced, and the service life is greatly prolonged.

Description

Household submersible pump

Technical Field

The utility model relates to the technical field of submersible pumps, in particular to a household submersible pump.

Background

In the domestic immersible pump trade, through the automatic aspect of opening of perception water level height control pump, only concern the setting of pump in normal standing state, when the pump is in other slopes or when empting the state, control system can become invalid. For example:

when the pump is in a dumping state, the water level of the pump is higher than the normal starting water level and lower than the impeller position height when the impeller is dumped, the pump can work but cannot discharge water; the existing probe inductive switch provides wrong judgment after sensing the water level, and the pump can continuously operate in such a water level state, but the operation belongs to invalid work (without drainage), and finally the service life of the pump is shortened or the pump is scrapped.

For the pump with the traditional float switch, when the pump is in a dumping state, the traditional float switch fails, and the pump does not work even if the water level is higher than the impeller position height when the impeller is dumped.

SUMMERY OF THE UTILITY MODEL

To overcome the above-mentioned drawbacks, it would be advantageous to provide a domestic submersible pump that avoids ineffective operation of the pump in the event that the pump is tipped over.

In order to achieve the purpose, the utility model provides a household submersible pump which comprises a pump body, a pump seat and a water level detection device, wherein an electric cavity is arranged in the pump body, and a circuit board is arranged in the electric cavity; a water outlet is arranged at the rear side of the pump seat; the water level detection device is installed at the bottom of the pump base and electrically connected with the circuit board, wherein the water level detection device comprises a first probe, a second probe and a third probe, the first probe and the second probe are located on one side of the water outlet, the third probe is located on the other side of the water outlet, the length of the second probe is smaller than that of the first probe, and the first probe and the third probe are consistent in length.

Further, the water level detection device further comprises a support, and the support is provided with a main probe mounting seat for mounting the first probe and the second probe and a secondary probe mounting seat for mounting the third probe at two ends of the support respectively.

Still further, the support is a plastic support.

Still further, the water level detection device further comprises a signal wire, wherein one end of the signal wire is electrically connected with the circuit board, and the other end of the signal wire is electrically connected with the first probe, the second probe and the third probe respectively.

Compared with the prior art, the utility model has the following advantages:

1) the operation of the pump is protected in all directions by the arrangement of three probes for sensing the water level and the ingenious spatial layout, and the perfect control of the pump in a special abnormal state is filled;

2) the 360-degree induction response mode solves the problem that the control system can only work in the standing state of the pump station and is invalid in the dumping state;

3) the cost is not greatly increased;

4) the failure risk of the pump is greatly reduced, and the service life is greatly prolonged.

These and other aspects of the utility model are apparent from and will be elucidated with reference to the embodiments described hereinafter.

Drawings

The structure and further objects and advantages of the present invention will be better understood by the following description taken in conjunction with the accompanying drawings, in which like reference characters identify like elements, and in which:

fig. 1 is a perspective view of a home submersible pump according to an embodiment of the present invention, but partially cut away to show the internal structure;

FIG. 2 is a plan view of the domestic submersible pump of FIG. 1 as viewed from the bottom of the base in a first, dumping condition in which the water outlet is to the left of the base;

FIG. 3 is a plan view of the submersible household pump of FIG. 1 in a second, dumping condition with the water outlet on the right side of the base;

FIG. 4 is a plan view of the domestic submersible pump of FIG. 1 in a third, dumping condition with the water outlet on the upper side of the base;

FIG. 5 is an enlarged schematic view of the water level detecting apparatus of the household submersible pump shown in FIG. 4;

fig. 6 is another perspective view of the water level detecting apparatus of fig. 5, i.e., an enlarged view of the water level detecting apparatus of the household submersible pump of fig. 1 as a whole.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, a home submersible pump according to an embodiment of the present invention includes a pump housing 1, a pump mount 3, and a water level detecting device 5. An electrical cavity 10 is arranged in the pump shell 1, and a circuit board 12 is arranged in the electrical cavity 10. The pump mount 3 is provided with a water outlet 30 at the rear side thereof. The water level detecting device 5 is installed at the bottom of the pump mount 3 and electrically connected to the circuit board 12.

As shown in fig. 1, 5 and 6, and referring to fig. 2 to 4, the water level detecting device 5 includes a plastic bracket 50, a first probe 51, a second probe 52, a third probe 53, and a signal line 54. The plastic holder 50 is provided at both ends thereof with a primary probe mount 57 and a secondary probe mount 59, respectively, wherein the first probe 51 and the second probe 52 are mounted on the primary probe mount 57, and the third probe 53 is mounted on the secondary probe mount 59. One end of the signal line 54 is connected to the circuit board 12, and the other end is connected to the first probe 51, the second probe 52, and the third probe 53, respectively. That is, the first probe 51, the second probe 52, and the third probe 53 are electrically connected to the circuit board 12 via the signal lines 54, respectively.

As shown in fig. 1 to 4, and with reference to fig. 5 and 6, the first probe 51 and the second probe 52 on the primary probe mount 57 are disposed on one side (e.g., the right side in fig. 4) of the water outlet 30 of the pump mount 3, and the third probe 53 on the secondary probe mount 59 is disposed on the other side (e.g., the left side in fig. 4) of the water outlet 30.

As shown in fig. 6, the second probe 52 has a smaller length than the first probe 51, and the first probe 51 has a length corresponding to that of the third probe 53. It will be appreciated that in this embodiment, the second probe 52 is used as a high level probe, the first probe 51 and the third probe 53 are used as low level probes, and two low level probes are provided and arranged on either side of the water outlet, so as to ensure that the pump will operate without draining, regardless of whether it is standing upright or in any of the dumping conditions shown in fig. 2 to 4.

When the household submersible pump of the embodiment is originally in the shutdown state:

if the first probe 51 and the second probe 52 are connected in series by water conduction, the state of the pump should be changed from the off state to the on state immediately according to the prior art, that is, the third probe 53 is not provided, but the circuit board 12 can control the pump not to be started in the present embodiment, because the pump is likely to be in the dumping state such as the dumping state of fig. 3, thereby avoiding the situation that the pump is started by mistake and does not discharge water, and after all, the water level exceeds the impeller position height of the dumping state in the dumping state shown in fig. 3 and then discharges water;

if the first probe 51 and the third probe 53 are connected in series by conduction through water, the circuit board 12 also controls the pump not to be started in this embodiment, because both probes are low water level probes, the start of the pump is not controlled;

if the second probe 52 and the third probe 53 are connected in series by water conduction, the circuit board 12 in this embodiment controls the pump to start, because the pump should be started to start draining no matter the household submersible pump of this embodiment is in a normal upright state or in a dumping state as in fig. 2 and 4.

When the household submersible pump of the embodiment is originally in the operating state:

if the first probe 51 and the second probe 52 are suddenly disconnected, i.e. they are no longer connected in series by water conduction, the operation state is immediately changed to the stop state according to the prior art, i.e. the third probe 53 is not provided, but the circuit board 12 can control the pump not to stop in the present embodiment, because the pump still needs to continue to drain water until the first probe 51 as the low water level probe detects no water level if the pump is still normally upright and does not topple at the moment;

if the first probe 51 and the third probe 53 are suddenly disconnected, the circuit board 12 in this embodiment controls the pump to stop, because the pump will idle if not stopped when in a normal upright state;

if the second probe 52 and the third probe 53 are disconnected suddenly, i.e. they cannot be connected in series by water conduction, the circuit board 12 in this embodiment controls the pump to continue running without stopping, because the domestic submersible pump of this embodiment can continue running and draining water whether it is in a normal upright state or in a dumping state as in fig. 2 to 4.

In the present embodiment, the third probe 53 and the relative position between the third probe 53 and the first probe 51 are arranged so that the circuit board 12 can obtain reliable reference information for switching the pump to the shutdown state or the operating state, and the household submersible pump of the present invention can maintain the correct working state no matter in the normal standing state or the tilting state, i.e., the household submersible pump can continue to be shutdown or operated when the state needs to be maintained, and can be immediately switched from the shutdown state to the operating state or from the operating state to the shutdown state when the state needs to be changed.

While the utility model has been described with respect to the foregoing technical disclosure and features, it will be understood that various changes and modifications in the above structure, including combinations of features disclosed herein either individually or as claimed, and obviously including other combinations of such features, may be resorted to by those skilled in the art, without departing from the spirit of the utility model. Such variations and/or combinations are within the skill of the art to which the utility model pertains and are within the scope of the following claims.

Claims

1. A household submersible pump is characterized by comprising a pump body, a pump seat and a water level detection device, wherein an electric cavity is arranged in the pump body, and a circuit board is arranged in the electric cavity; a water outlet is arranged at the rear side of the pump seat; the water level detection device is installed at the bottom of the pump base and electrically connected with the circuit board, wherein the water level detection device comprises a first probe, a second probe and a third probe, the first probe and the second probe are located on one side of the water outlet, the third probe is located on the other side of the water outlet, the length of the second probe is smaller than that of the first probe, and the first probe and the third probe are consistent in length.

2. The home submersible pump of claim 1, wherein the water level detection apparatus further comprises a bracket provided at both ends thereof with a primary probe mount to which the first probe and the second probe are mounted and a secondary probe mount to which the third probe is mounted, respectively.

3. The domestic submersible pump of claim 2, wherein the bracket is a plastic bracket.

4. The home submersible pump of claim 2, wherein the water level detection device further comprises a signal line having one end electrically connected to the circuit board and the other end electrically connected to the first probe, the second probe, and the third probe, respectively.