CN218118012U

CN218118012U - Water pump

Info

Publication number: CN218118012U
Application number: CN202222583545.2U
Authority: CN
Inventors: 张洪德; 俞祺
Original assignee: Ningbo Laibao Refrigeration Equipment Co ltd
Current assignee: Ningbo Laibao Refrigeration Equipment Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-23
Anticipated expiration: 2032-09-28

Abstract

The utility model provides a water pump, which comprises a pump body, the fixed floater switch that is provided with in pump body lower part, the floater switch includes the riser of lumen and external intercommunication, be provided with in the riser along gliding slider from top to bottom of riser, the riser lower extreme be provided with be used for the inductive switch who stops the water pump behind the slider contact, its upper end height when slider is located the next and the high parallel and level of mouth that draws water of the pump body. According to the scheme, the float switch is directly arranged on the pump body, the floating block is separated from the outside through the vertical pipe, so that the underwater sundries can not interfere with the up-and-down sliding of the floating block, meanwhile, the floating block is located at the lower position and can be powered off, the lower position of the floating block is parallel and level with the water pumping port, so that the power can be powered off only when the water level reaches the water pumping port, and sufficient water is guaranteed to be pumped away when the water pump idles.

Description

Water pump

Technical Field

The utility model relates to a water pump.

Background

A float switch is generally arranged on the water pump to prevent the water pump from being damaged by idling caused by too low water level. Float switches for water pumps also generally need to be sealed to prevent short circuiting of the incoming water.

Chinese patent CN202094047U discloses a float switch, which comprises a housing, wherein the housing comprises two cover bodies with the same structure and a connector for connecting the two cover bodies. One side in the cover body is provided with a steel ball rolling rail along the axial direction, the steel ball is arranged in the rolling rail, and the steel ball rolling rail is composed of a plurality of rail plates with grooves in the middle. The other side of the cover body is provided with a microswitch positioning plate, and a microswitch of the cover body is fixed on the microswitch positioning plate through a fixing piece. A limiting plate is arranged between the steel ball rolling track and the microswitch positioning plate, a shifting sheet positioning hole is arranged at one end of the limiting plate, a shifting sheet is arranged in the shifting sheet positioning hole through a fixing piece shaft, and the shifting sheet is positioned between the microswitch and the steel ball. The middle part of the shifting piece, facing to one side face of the micro switch, is provided with a bulge, the bottom end of the bulge is higher than the upper end of the limiting plate, and the lower end of the shifting piece is lower than the upper end of the limiting plate.

This float switch generally sets up and is connected with the water pump through the pencil at the top of water pump, only can make the pencil can stimulate the slope shell steel ball just can the circular telegram under the action of gravity when the liquid level is higher, that is to say when the liquid level only drops to the shell and will cut off the power supply when keeping the level, and the surface of water fluctuation also can lead to the outage even, and the water inlet of water pump generally is located the lower extreme of water pump, so just so can have darker ponding to preserve, need the manual work to lift up float switch and make its circular telegram again continue to draw water. When the pond water is pumped, the float switch is likely to be caught on stones when falling along with the water level because the pond is low and not flat. The floating ball switch is always kept in an inclined power-on state due to sundries such as branches, so that the idling of the water pump cannot be avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a water pump, the water level that corresponds when its switch is closed is highly lower and its process of floating does not receive the bottom of water debris influence.

In order to solve the technical problem, the utility model provides a technical scheme does:

the utility model provides a water pump, includes the pump body, the fixed floater switch that is provided with in pump body lower part, the floater switch includes the riser of lumen and external intercommunication, be provided with the slider along riser gliding from top to bottom in the riser, the riser lower extreme is provided with the inductive switch who is used for stopping the water pump after contacting with the slider, its upper end height and the high parallel and level of the mouth that draws water of the pump body when the slider is located the next position.

According to the scheme, the float switch is directly arranged on the pump body, the floating block is separated from the outside through the vertical pipe, so that the underwater sundries can not interfere with the up-and-down sliding of the floating block, meanwhile, the floating block is located at the lower position and can be powered off, the lower position of the floating block is parallel and level with the water pumping port, so that the power can be powered off only when the water level reaches the water pumping port, and sufficient water is guaranteed to be pumped away when the water pump idles.

Preferably, the inductive switch comprises a sealing box, two electric contacts connected with a water pump start-stop circuit are arranged at the lower end of an inner cavity of the sealing box, an iron sheet with conductivity and capable of sliding up and down is arranged above the two electric contacts, a magnetic sheet is arranged at the lower end of the floating block, and the suction force of the floating block and the iron sheet and the gravity of the floating block are smaller than the buoyancy force generated when water submerges the floating block.

Preferably, a guide rod is arranged in the float switch along the axial direction of the float switch, the floating block is cylindrical, a guide hole for penetrating through the guide rod penetrates through the floating block along the axis, and the iron sheet is sleeved on the guide rod.

Preferably, the guide rod is of a hollow structure, and the leads of the two electric contacts extend upwards out of the vertical pipe along the inner cavity of the guide rod and are connected with a start-stop circuit of the water pump.

Preferably, the vertical pipe is sleeved with a filter screen.

Preferably, the lower end of the stand pipe is in threaded connection with the seal box.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the float switch;

description of reference numerals: 10. a pump body; 11. a water pumping port; 20. a float switch; 21. a riser; 22. a slider; 23. a sealing box; 24. an electrical contact; 25. iron sheets; 26. a guide bar; 27. a filter screen cover.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "bottom", "outer wall", "front and back", etc. are directions or positional relationships based on the use state, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

The water pump comprises a pump body 10, wherein a float switch 20 is fixedly arranged on the lower portion of the pump body 10, the float switch 20 comprises a vertical pipe 21, a pipe cavity of the vertical pipe 21 is communicated with the outside, a floating block 22 which slides up and down along the vertical pipe 21 is arranged in the vertical pipe 21, an induction switch which is used for stopping the water pump after being in contact with the floating block 22 is arranged at the lower end of the vertical pipe 21, and the height of the upper end of the floating block 22 is flush with the height of a water pumping port 11 of the pump body 10 when the floating block 22 is located at the lower position.

In the scheme, the float switch is directly arranged on the pump body 10, the floating block 22 is separated from the outside through the vertical pipe 21, so that underwater sundries cannot interfere with the up-and-down sliding of the floating block 22, meanwhile, the floating block 22 is powered off when being located at the lower position, the lower position of the floating block 22 is flush with the water pumping port 11, the power off is realized only when the water level reaches the water pumping port 11, and the phenomenon that the water pump idles is avoided while enough accumulated water is guaranteed to be pumped away. Wherein the inductive switch can be a magnetic inductive switch, a proximity switch, etc.

Preferably, the inductive switch comprises a sealing box 23, two electric contacts 24 connected with a water pump start-stop circuit are arranged at the lower end of an inner cavity of the sealing box 23, an iron sheet 25 with conductivity and capable of sliding up and down is arranged above the two electric contacts 24, a magnetic sheet is arranged at the lower end of the floating block 22, and the suction force of the floating block 22 and the iron sheet 25 plus the gravity of the floating block 22 is smaller than the buoyancy force generated when water submerges the floating block 22. When the floating block 22 is located at the lower position, the iron sheet 25 can be sucked to the upper end due to the fact that the floating block is close to the iron sheet 25, the iron sheet 25 can be separated from the two electric contacts 24, the two electric contacts 24 are disconnected, the water pump stops, when the floating block 22 rises due to buoyancy of water, the suction force far away from the iron sheet 25 is reduced, the iron sheet 25 contacts the two electric contacts 24 under the action of gravity, the two electric contacts 24 are communicated and conduct electricity, and the water pump can be started. Therefore, the started switch is completely sealed in the sealing box 23, no corresponding transmission mechanism exists between the started switch and the outside, the sealing performance can be enhanced, and short circuit is effectively avoided. The safety of the operation of the water pump is ensured. A copper sheet or copper plating may be provided on the lower end surface of the iron piece 25 to reduce the resistance.

Preferably, a guide rod 26 is arranged in the float switch 20 along the axial direction thereof, the floating block 22 is cylindrical, a guide hole for passing through the guide rod 26 penetrates through the floating block 22 along the axis, and the iron sheet 25 is sleeved on the guide rod. The slider 22 and the iron piece 25 are easily slid up and down by the arrangement of the guide bar.

Preferably, the guide rod 26 is a hollow structure, and the leads of the two electrical contacts 24 extend upwards along the inner cavity of the guide rod 26 to the outside of the stand pipe 21 and are connected with a start-stop circuit of the water pump. Therefore, the wiring can be carried out from the upper end of the float switch 20, and the exposure damage caused by the collision between the wiring at the lower end and underwater hard objects is avoided.

Preferably, the stand pipe 21 is sleeved with a filter screen 27. The floating block 22 is prevented from sliding due to blockage in the vertical pipe 21 caused by the water bottom sundries entering the vertical pipe 21.

Preferably, the lower end of the stand pipe 21 is threadedly coupled to the sealing case 23. The vertical pipe 21 is convenient to disassemble, and then the interior of the vertical pipe 21 is cleaned, so that a large amount of scale is prevented from remaining in the vertical pipe 21 after long-time use.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present disclosure.

Claims

1. A water pump comprising a pump body (10), characterized in that: the pump comprises a pump body (10), and is characterized in that a floating ball switch (20) is fixedly arranged on the lower portion of the pump body (10), the floating ball switch (20) comprises a vertical pipe (21) communicated with the outside through a pipe cavity, a floating block (22) sliding up and down along the vertical pipe (21) is arranged in the vertical pipe (21), an induction switch which is used for stopping the water pump after being in contact with the floating block (22) is arranged at the lower end of the vertical pipe (21), and the upper end of the floating block (22) is flush with the water pumping port (11) of the pump body (10) in height when the floating block (22) is located at the lower position.

2. The water pump of claim 1, wherein: the inductive switch comprises a sealing box (23), two electric contacts (24) connected with a water pump start-stop circuit are arranged at the lower end of an inner cavity of the sealing box (23), an iron sheet (25) which slides up and down and has electric conductivity is arranged above the two electric contacts (24), a magnetic sheet is arranged at the lower end of the floating block (22), and the attraction force between the floating block (22) and the iron sheet (25) and the gravity of the floating block (22) are smaller than the buoyancy force generated when water submerges the floating block (22).

3. The water pump of claim 2, wherein: the float switch is characterized in that a guide rod (26) arranged along the axial direction of the float switch is arranged in the float switch (20), the floating block (22) is cylindrical, a guide hole for penetrating through the guide rod (26) penetrates through the floating block (22) along the axis, and the guide rod is sleeved with an iron sheet (25).

4. The water pump of claim 3, wherein: the guide rod (26) is of a hollow structure, and leads of the two electric contacts (24) extend upwards to the outside of the stand pipe (21) along an inner cavity of the guide rod (26) and are connected with a start-stop circuit of the water pump.

5. The water pump of claim 1 or 2 or 3 or 4, wherein: the vertical pipe (21) is sleeved with a filter screen (27).

6. The water pump of claim 1 or 2 or 3 or 4, wherein: the lower end of the stand pipe (21) is in threaded connection with the sealing box (23).