CN112983839A

CN112983839A - Submersible pump

Info

Publication number: CN112983839A
Application number: CN202110285707.1A
Authority: CN
Inventors: 蔡锦杰
Original assignee: TAIZHOU YANGCHUN ELECTRIC MOTOR CO Ltd
Current assignee: TAIZHOU YANGCHUN ELECTRIC MOTOR CO Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-06-18
Anticipated expiration: 2041-03-17
Also published as: CN112983839B

Abstract

The invention provides a submersible pump, and belongs to the technical field of machinery. The submersible pump comprises a pump shell, a machine barrel and a filter screen, wherein the machine barrel and the filter screen are respectively fixed on the upper side and the lower side of the pump shell, an impeller is arranged in the pump shell, a motor is fixed in the machine barrel, a motor spindle extends into the pump shell and is connected with the impeller, the filter screen is cylindrical and coaxial with the motor spindle, a water inlet hole which is right opposite to an inner cavity of the filter screen is formed in the bottom wall of the pump shell, a bottom plate is horizontally arranged at the bottom of the filter screen, an L-shaped stop lever is integrally formed at the edge of the bottom plate and consists of a vertically arranged lever I and a horizontally arranged lever II which is used for connecting the bottom plate, the; the middle part of the bottom plate is integrally formed with a rotating shaft which is coaxial with the motor spindle, the upper end of the rotating shaft extends into the filter screen, the rotating shaft is rotatably connected with the filter screen, and a linkage mechanism which enables the rotating shaft to rotate along with the motor spindle is arranged between the rotating shaft and the motor spindle. The submersible pump can block a filter screen into which floccules flow.

Description

Submersible pump

Technical Field

The invention belongs to the technical field of machinery, and relates to a water pump, in particular to a submersible pump.

Background

The submersible pump is an important device for pumping water from a deep well, when in use, the whole unit is submerged into water to work, and the underground water is pumped to the ground surface, so that the submersible pump is used for domestic water, mine emergency rescue, industrial cooling, farmland irrigation, seawater lifting and ship load regulation, and can also be used for fountain landscape.

For preventing impurity entering immersible pump chamber and taking place the contact with the impeller, current immersible pump generally can set up the filter screen in its water inlet department, but the filter screen can only block particulate impurity, and it can't block and be the flocculation thing of bar, and the flocculation thing that is the bar blocks up the filter screen mesh extremely easily, leads to frequently wasing the filter screen, and the operation is inconvenient.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a submersible pump capable of preventing floccules from flowing into a filter screen.

The purpose of the invention can be realized by the following technical scheme: a submersible pump comprises a pump shell, a machine barrel and a filter screen, wherein the machine barrel and the filter screen are respectively fixed on the upper side and the lower side of the pump shell, an impeller is arranged in the pump shell, a motor is fixed in the machine barrel, a motor spindle extends into the pump shell and is connected with the impeller, the filter screen is cylindrical and coaxial with the motor spindle, and a water inlet hole which is right opposite to an inner cavity of the filter screen is formed in the bottom wall of the pump shell; the middle part of the bottom plate is integrally formed with a rotating shaft which is coaxial with the motor spindle, the upper end of the rotating shaft extends into the filter screen, the rotating shaft is rotatably connected with the filter screen, and a linkage mechanism which enables the rotating shaft to rotate along with the motor spindle is arranged between the rotating shaft and the motor spindle.

During the use, the bottom plate rotates along with the motor spindle to a many poles one through the rotation forms the protection barrier, is used for convoluteing the bar floccule, thereby effectively blocks that the floccule enters into the filter screen mesh, prolongs the filter screen unblocked time, does benefit to the operation.

In foretell immersible pump, foretell filter screen diapire upwards extends integrated into one piece and has the body, and the body cover is outside the pivot, and body and pivot pass through the bearing and rotate the connection, have simple structure, simple to operate's advantage.

In foretell immersible pump, filter screen and pump case can be dismantled and link firmly, and the link gear includes that the shaping just is the keyway of axial setting on the pivot roof, and in motor spindle lower extreme extended to the keyway, and motor spindle and pivot spline fit. Motor spindle and pivot adopt the spline fit, not only can improve both rotatory axiality, and both connect moreover and need not be with the help of other parts, and when unloading the filter screen, the filter screen is unloaded together to the pivot can be followed to the filter screen and washs conveniently.

In foretell immersible pump, integrated into one piece has the annular shaft shoulder on the outer wall of motor spindle lower extreme, and the shaft shoulder sticiss on the pivot roof, so both can support motor spindle, strengthen rotational stability, make again to form better sealed between pivot and the motor spindle, prevent that the fluid from entering into both junctions, improvement job stabilization nature.

In foretell immersible pump, seted up annular groove on the shaft shoulder diapire, be equipped with annular sealing pad in the annular groove, and annular sealing pad's both ends face offsets with annular groove diapire and pivot roof respectively to strengthen the sealed effect between pivot and the motor spindle.

As another scheme, in the submersible pump, the linkage mechanism includes a coupling disposed in the filter screen and used for connecting the rotating shaft and the motor spindle.

In the submersible pump, the annular shoulder is integrally formed on the inner wall of the pipe body, the annular retaining shoulder is integrally formed on the side wall of the rotating shaft, the annular shoulder and the annular retaining shoulder are respectively positioned at the upper side and the lower side of the bearing, the inner ring and the outer ring of the bearing are respectively abutted against the annular retaining shoulder and the annular shoulder, the rotating shaft is sealed with the annular shoulder through the first sealing ring, and the annular retaining shoulder is sealed with the inner wall of the pipe body through the second sealing ring, so that the bearing is positioned in a closed environment to protect the bearing and improve the working stability.

In foretell immersible pump, the pivot overcoat have the spring, and the spring both ends respectively with annular keep off shoulder and bottom plate counterbalance, and under the spring action, the pivot has upward movement trend, makes pivot and motor spindle more closely combine to improve immersible pump operating stability.

In foretell immersible pump, pump case diapire on integrated into one piece have and be annular connecting portion, the filter screen spiro union is outside connecting portion, the filter screen dismouting of being more convenient for.

Compared with the prior art, the submersible pump has the following advantages:

1. during the use, the bottom plate rotates along with the motor spindle to a many poles one through the rotation forms the protection barrier, is used for convoluteing the bar floccule, thereby effectively blocks that the floccule enters into the filter screen mesh, prolongs the filter screen unblocked time, does benefit to the operation.

2. Motor spindle and pivot adopt the spline fit, not only can improve both rotatory axiality, and both connect moreover and need not be with the help of other parts, and when unloading the filter screen, the filter screen is unloaded together to the pivot can be followed to the filter screen and washs conveniently.

Drawings

Fig. 1 is a schematic perspective view of a submersible pump.

Fig. 2 is a schematic sectional view of the submersible pump.

Fig. 3 is an enlarged schematic view of a structure at a in fig. 2.

In the drawings, 1, a pump casing; 1a, a connecting part; 1b, a water inlet hole; 2. a barrel; 3. filtering with a screen; 3a, a pipe body; 3a1, annular shoulder; 4. an impeller; 5. a base plate; 5a, a rotating shaft; 5a1, annular shoulder; 5b, a stop lever; 5b1, lever one; 6. a bearing; 7. a first sealing ring; 8. a second sealing ring; 9. a motor; 9a, a shaft shoulder; 10. an annular seal; 11. a spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the submersible pump includes a pump housing 1, and a cylinder 2 and a strainer 3 fixed to the upper and lower sides of the pump housing 1, respectively.

As shown in fig. 2, the pump casing 1 includes a pump chamber, and an impeller 4 is provided in the pump chamber. A motor 9 is fixed in the machine barrel 2, and a main shaft of the motor 9 extends into the pump cavity and is connected with the impeller 4. The filter screen 3 is cylindrical and coaxial with the main shaft of the motor 9. In this embodiment, integrated into one piece has on the 1 diapire of pump case to be annular connecting portion 1a, and 3 spiro unions of filter screen realize that filter screen 3 and pump case 1 can dismantle and link firmly, the 3 dismouting of the filter screen of being convenient for outside connecting portion 1 a. The bottom wall of the pump shell 1 is provided with a water inlet hole 1b which is just opposite to the inner cavity of the filter screen 3, and the water inlet hole 1b is communicated with the pump cavity.

Specifically, the bottom of the filter screen 3 is horizontally provided with a bottom plate 5, the edge of the bottom plate 5 is integrally formed with a L-shaped stop lever 5b, the stop lever 5b is composed of a first vertically-arranged lever 5b1 and a second horizontally-arranged lever 5, the first lever 5b1 is in the shape of a straight lever and is positioned outside the filter screen 3, and the stop lever 5b is uniformly distributed along the circumference of the filter screen 3. Preferably, the number of the shift levers is 4. A rotating shaft 5a coaxial with a main shaft of the motor 9 is integrally formed in the middle of the bottom plate 5, the upper end of the rotating shaft 5a extends into the filter screen 3, the rotating shaft 5a is rotatably connected with the filter screen 3, and a linkage mechanism enabling the rotating shaft 5a to rotate along with the main shaft of the motor 9 is arranged between the rotating shaft 5a and the main shaft of the motor 9. During the use, bottom plate 5 rotates along with motor 9 main shaft to many poles one through the rotation 5b1 form the protection barrier, be used for coiling bar floccule, thereby effectively block the floccule and enter into the filter screen 3 mesh, extension filter screen 3 unblocked time does benefit to the operation.

Wherein,

the rotary connection mode of the rotating shaft 5a and the filter screen 3 is as follows: 3 diapalls of filter screen upwards extend integrated into one piece have body 3a, and body 3a covers outside pivot 5a, and body 3a and pivot 5a rotate through bearing 6 and connect, have simple structure, simple to operate's advantage. Further, an annular shoulder 3a1 is integrally formed on the inner wall of the tube body 3a, an annular retaining shoulder 5a1 is integrally formed on the side wall of the rotating shaft 5a, the annular shoulder 3a1 and the annular retaining shoulder 5a1 are respectively positioned at the upper side and the lower side of the bearing 6, the inner ring and the outer ring of the bearing 6 are respectively pressed against the annular retaining shoulder 5a1 and the annular shoulder 3a1, the rotating shaft 5a forms a seal with the annular shoulder 3a1 through a first seal ring 7, and the annular retaining shoulder 5a1 forms a seal with the inner wall of the tube body 3a through a second seal ring 8, so that the bearing 6 is in a sealed environment to protect the bearing 6 and improve the working stability.

The link gear includes the shaping keyway that just is the axial setting on pivot 5a roof, and 9 main shafts of motor lower extreme extend to the keyway in, and 9 main shafts of motor and 5a spline fits of pivot. Motor 9 main shaft and pivot 5a adopt spline fit, not only can improve both rotatory axiality, and both connect moreover and need not be with the help of other parts, and when unloading filter screen 3 like this, pivot 5a can be followed filter screen 3 and unloaded together to filter screen 3 washs conveniently. Further, an annular shaft shoulder 9a is integrally formed on the outer wall of the lower end of the main shaft of the motor 9, the shaft shoulder 9a is tightly pressed on the top wall of the rotating shaft 5a, an annular groove is formed in the bottom wall of the shaft shoulder 9a, an annular sealing gasket 10 is arranged in the annular groove, and two end faces of the annular sealing gasket 10 are respectively abutted against the bottom wall of the annular groove and the top wall of the rotating shaft 5a so as to enhance the sealing effect between the rotating shaft 5a and the main shaft of the motor 9.

As shown in fig. 3, the spring 11 is sleeved outside the rotating shaft 5a, and two ends of the spring 11 respectively abut against the annular shoulder 5a1 and the bottom plate 5, and under the action of the spring 11, the rotating shaft 5a has an upward movement tendency, so that the rotating shaft 5a and the main shaft of the motor 9 are more tightly combined to improve the operation stability of the submersible pump.

Example two

The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the linkage mechanism comprises a coupling which is arranged in the filter screen 3 and is used for connecting the rotating shaft 5a and the main shaft of the motor 9.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A submersible pump comprises a pump shell (1), a machine barrel (2) and a filter screen (3) which are respectively fixed on the upper side and the lower side of the pump shell (1), wherein an impeller (4) is arranged in the pump shell (1), a motor (9) is fixed in the machine barrel (2), a main shaft of the motor (9) extends into the pump shell (1) and is connected with the impeller (4), the filter screen (3) is cylindrical and coaxial with the main shaft of the motor (9), a water inlet hole (1b) which is right opposite to an inner cavity of the filter screen (3) is formed in the bottom wall of the pump shell (1), the novel filter screen is characterized in that a bottom plate (5) is horizontally arranged at the bottom of the filter screen (3), a blocking rod (5b) in an L shape is integrally formed at the edge of the bottom plate (5), the blocking rod (5b) is composed of a first rod (5b1) which is vertically arranged and a second rod which is horizontally arranged and is used for connecting the bottom plate (5), the first rod (5b1) is in a straight rod shape and is positioned outside the filter screen (3), and a plurality of blocking rods (5b) are uniformly distributed along the circumferential direction of the filter screen (3); a rotating shaft (5a) coaxial with a main shaft of the motor (9) is integrally formed in the middle of the bottom plate (5), the upper end of the rotating shaft (5a) extends into the filter screen (3), the rotating shaft (5a) is rotatably connected with the filter screen (3), and a linkage mechanism enabling the rotating shaft (5a) to rotate along with the main shaft of the motor (9) is arranged between the rotating shaft (5a) and the main shaft of the motor (9).

2. The submersible pump according to claim 1, wherein the bottom wall of the filter screen (3) extends upwards to form a pipe body (3a) integrally, the pipe body (3a) is sleeved outside the rotating shaft (5a), and the pipe body (3a) and the rotating shaft (5a) are rotatably connected through the bearing (6).

3. The submersible pump according to claim 2, wherein the filter screen (3) is detachably and fixedly connected with the pump casing (1), the linkage mechanism comprises a key groove which is formed on the top wall of the rotating shaft (5a) and is axially arranged, the lower end of the main shaft of the motor (9) extends into the key groove, and the main shaft of the motor (9) is in spline fit with the rotating shaft (5 a).

4. The submersible pump according to claim 3, characterized in that the outer wall of the lower end of the main shaft of the motor (9) is integrally formed with an annular shoulder (9a), and the shoulder (9a) is pressed against the top wall of the rotating shaft (5 a).

5. The submersible pump according to claim 4, wherein the bottom wall of the shaft shoulder (9a) is provided with an annular groove, an annular sealing gasket (10) is arranged in the annular groove, and two end faces of the annular sealing gasket (10) are respectively abutted against the bottom wall of the annular groove and the top wall of the rotating shaft (5 a).

6. The submersible pump according to claim 2, characterized in that the inner wall of the tube body (3a) is integrally formed with an annular shoulder (3a1), the side wall of the rotating shaft (5a) is integrally formed with an annular shoulder (5a1), the annular shoulder (3a1) and the annular shoulder (5a1) are respectively arranged at the upper side and the lower side of the bearing (6), the inner ring and the outer ring of the bearing (6) are respectively pressed against the annular shoulder (5a1) and the annular shoulder (3a1), the rotating shaft (5a) forms a seal with the annular shoulder (3a1) through the first sealing ring (7), and the annular shoulder (5a1) forms a seal with the inner wall of the tube body (3a) through the second sealing ring (8).

7. The submersible pump according to claim 1 or 2, characterized in that the spring (11) is sleeved outside the rotating shaft (5a), two ends of the spring (11) respectively abut against the annular retaining shoulder (5a1) and the bottom plate (5), and the rotating shaft (5a) has an upward movement tendency under the action of the spring (11).

8. The submersible pump according to claim 1, characterized in that the bottom wall of the pump casing (1) is integrally formed with a ring-shaped connecting part (1a), and the filter screen (3) is screwed outside the connecting part (1 a).