CN113266575B

CN113266575B - Sewage pump

Info

Publication number: CN113266575B
Application number: CN202110562911.3A
Authority: CN
Inventors: 刘倩倩; 李玉彬; 吴迪
Original assignee: Yichang City Xixia Pump Co ltd
Current assignee: Yichang City Xixia Pump Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-11-04
Anticipated expiration: 2041-05-24
Also published as: CN113266575A

Abstract

The invention discloses a sewage pump which comprises a pump shell, wherein a pump cavity is arranged in the pump shell, a liquid inlet pipe communicated with the pump cavity is arranged at the left end of the pump shell, a liquid outlet pipe communicated with the pump cavity is arranged in the circumferential direction of the pump shell, and the inner side wall of the left end of the pump cavity is fixedly arranged on a friction plate at the position of the liquid inlet pipe; an opening at the right end of the pump cavity is connected with an end cover in a sliding manner along the left-right direction, an impeller positioned in the pump cavity is connected in the end cover in a rotating manner, an adjusting component connected with a pump shell is arranged on the end cover, and the adjusting component is used for adjusting a gap between the left end of the impeller and a friction plate; a case is fixedly arranged at the right end of the end cover, a rotating shaft is rotatably connected in the case, and the left end of the rotating shaft is connected with the impeller through a clamping plate assembly; the sewage pump not only can adjust the gap between the friction plate and the impeller, but also has convenient impeller disassembly.

Description

Sewage pump

Technical Field

The invention relates to the field of sewage pumps, in particular to a sewage pump.

Background

The sewage self-sucking pump adopts an axial backflow external mixing type, and through the unique design of a pump body and an impeller flow passage, the sewage self-sucking pump can suck and discharge large-particle solid and long-fiber impurity liquid without installing a bottom valve and filling water like a common self-sucking clean water pump, and can be widely applied to industries such as municipal sewage engineering, pond culture and the like. The prior sewage pump has the following problems when in use:

1. a gap is reserved between an impeller and a friction plate of the existing sewage draining self-priming pump, and the impeller is abraded under the washing of water along with the rotation work of the impeller, so that the gap between the impeller and the friction plate is enlarged, and the service performance of the pump is influenced;

2. the pump shaft and the impeller of the sewage self-sucking pump are connected through screws and a gland, a hole is formed in the center of the impeller, the pump shaft is inserted into the hole from one side of the impeller, the gland is placed on the other side of the impeller, the screws penetrate through the gland to be fastened at the end part of the pump shaft, sewage is sucked from the center of the impeller and then thrown away through centrifugal force, and therefore the screws and the gland are soaked in the sewage for a long time, are easy to rust and loosen, and are inconvenient to install and maintain.

Disclosure of Invention

The invention aims to provide a sewage pump which not only can adjust the gap between a friction plate and an impeller, but also is convenient to disassemble the impeller.

In order to achieve the purpose, the invention provides the following technical scheme: a sewage pump comprises a pump shell, wherein a pump cavity is arranged in the pump shell, a liquid inlet pipe communicated with the pump cavity is arranged at the left end of the pump shell, a liquid outlet pipe communicated with the pump cavity is circumferentially arranged on the pump shell, and a friction plate is fixedly arranged on the inner side wall of the left end of the pump cavity at the position of the liquid inlet pipe; an opening at the right end of the pump cavity is connected with an end cover in a sliding manner along the left-right direction, an impeller positioned in the pump cavity is connected in the end cover in a rotating manner, an adjusting component connected with a pump shell is arranged on the end cover, and the adjusting component is used for adjusting a gap between the left end of the impeller and a friction plate; the right-hand member of end cover is fixed and is equipped with the quick-witted case, the rotation of machine incasement is connected with the pivot, the left end of pivot is connected with the impeller through the cardboard subassembly.

Furthermore, four adjusting assemblies are arranged at intervals along the circumferential direction of the end cover; the adjusting assembly comprises a positioning block, a mounting groove and a notch communicated with the left end of the mounting groove are formed in the end cover, the positioning block is hinged in the mounting groove, a screw rod arranged along the left-right direction is connected with the positioning block in a threaded manner, the left end of the screw rod is rotatably connected with a positioning pin, and a positioning hole for the positioning pin to extend into is formed in the inner side wall of the right end opening of the pump shell; a spring piece for forcing the positioning block to drive the positioning pin to extend into the positioning hole is fixedly arranged in the mounting groove; the right end of the screw rod is provided with an inner hexagon.

Furthermore, the screw rod is in threaded connection with a locking nut near the right end, and the locking nut is used for locking the screw rod.

Furthermore, the clamping plate assembly comprises a clamping and locking plate, a convex column extending rightwards is arranged in the center of the right end of the impeller, and a convex shaft extending leftwards is arranged at the left end of the rotating shaft; the convex column is internally provided with a shaft hole for the convex shaft to extend into, the convex column is internally provided with a slot communicated with the shaft hole along the direction vertical to the shaft hole, the locking plate is inserted into the slot, the locking plate is internally provided with a U-shaped slot hole and a round slot hole communicated with the U-shaped slot hole, and the round slot hole is used for the convex shaft to extend into; the side surface of the convex shaft close to the left end is provided with a clamping groove matched with the U-shaped slotted hole; when the U-shaped slot hole is mutually clamped with the clamping groove, the convex column is fixedly connected with the convex shaft; when the U-shaped groove hole is separated from the clamping groove and the circular groove hole and the convex shaft are in the coaxial position, the impeller is pulled to the direction far away from the rotating shaft so that the impeller is separated from the convex shaft; when the locking plate slides upwards to the first position, the U-shaped slotted hole is mutually clamped with the clamping groove; when the locking plate slides downwards to the second position, the U-shaped slotted hole is separated from the locking groove, and the circular slotted hole and the convex shaft are in the coaxial position; a first control assembly used for forcing the clamping and locking plate to slide upwards to a first position is arranged in the slot; and a second control assembly used for controlling the card locking plate to slide downwards to a second position is arranged in the end cover.

Furthermore, the lateral wall of slot is equipped with the spout along the card jam board direction of motion, first control assembly includes first spring, be equipped with the flange that stretches into in the spout on the card jam board, first spring is in and is used for forcing the flange to drive card jam board upwards to the primary importance by the compression state and be located the spout.

Furthermore, the second control assembly comprises a pressing rod, a slide way is arranged on the side wall of an inner hole of the end cover along the movement direction of the clamping and locking plate, the pressing rod is connected in the end cover in a sliding manner along the vertical direction, the lower end of the pressing rod extends into the end cover and is provided with a control ring connected in the slide way in a sliding manner, the convex column is positioned in the control ring, and the control ring and the clamping and locking plate are positioned in the same plane; a convex shoulder is arranged at the end part of the pressing rod extending out of the end cover, a second spring is sleeved on the pressing rod, and the second spring is positioned between the end cover and the convex shoulder and is in a compressed state; the pushing pressing rod drives the control ring to push the locking plate to move downwards to the second position.

Further, the left end in the inherent shaft hole of projection is equipped with the spring hole, locate the slide in the spring hole to and be used for forcing the third spring of slide right movement, be equipped with on the slide and stretch into the first ejector pin in the shaft hole and stretch into the second ejector pin in the slot, when the card jam plate slided to the second position downwards, the lower extreme in U-shaped slotted hole was stretched into to the second ejector pin, and when the protruding axle stretched into the shaft hole, first ejector pin top was tight at the left end of protruding axle.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. by using the rotatable screw rod, when the impeller is abraded to enlarge the gap between the friction plate and the friction plate, the pump shell can be driven by rotating the screw rod through the positioning pin to move rightwards to reduce the gap, and the adjustment is convenient and quick;

2. by using the impenetrable impeller, the part of the impeller connected with the rotating shaft can not be immersed in sewage, so that the connecting part of the rotating shaft and the impeller is prevented from being corroded, and the reliability and the service life of the connection of the impeller and the rotating shaft are improved;

3. through the cooperation that uses the card jam plate and control ring for just can install the impeller and pull down easy to assemble and maintenance through simple mode.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view taken at I of FIG. 1 in accordance with the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 4 is a cross-sectional view of an impeller of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4 in accordance with the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 1 in accordance with the present invention;

FIG. 7 is a schematic three-dimensional structure of a rotating shaft according to the present invention;

FIG. 8 is a schematic three-dimensional structure of a positioning block according to the present invention.

Detailed Description

Referring to fig. 1-8, a dredge pump includes a pump case 1, a pump cavity 101 is provided in the pump case 1, a liquid inlet pipe 102 communicated with the pump cavity 101 is provided at the left end of the pump case 1, a liquid outlet pipe 103 communicated with the pump cavity 101 is provided in the circumferential direction of the pump case 1, and a friction plate 15 is fixedly provided at the liquid inlet pipe 102 on the inner side wall at the left end of the pump cavity 101; an opening at the right end of the pump cavity 101 is connected with an end cover 3 in a sliding mode along the left-right direction, an impeller 2 positioned in the pump cavity 101 is connected in the end cover 3 in a rotating mode, an adjusting assembly connected with a pump shell 1 is arranged on the end cover 3, and the adjusting assembly is used for adjusting a gap between the left end of the impeller 2 and a friction plate 15; the right end of the end cover 3 is fixedly provided with a case 104, a rotating shaft 9 is rotatably connected in the case 104, and the left end of the rotating shaft 9 is connected with the impeller 2 through a clamping plate assembly.

The four adjusting assemblies are uniformly arranged along the circumferential direction of the end cover 3 at intervals; the adjusting assembly comprises a positioning block 14, a mounting groove 31 and a notch 32 communicated with the left end of the mounting groove 31 are arranged in the end cover 3, the positioning block 14 is hinged in the mounting groove 31, a screw rod 12 arranged along the left-right direction is connected in the positioning block 14 in a threaded manner, the left end of the screw rod 12 is rotatably connected with a positioning pin 11, and a positioning hole 1a for the positioning pin 11 to extend into is formed in the inner side wall of the opening at the right end of the pump shell 1; a spring piece 10 for forcing the positioning block 14 to drive the positioning pin 11 to extend into the positioning hole 1a is fixedly arranged in the mounting groove 31; the right end of the screw rod 12 is provided with an inner hexagon. The screw rod 12 is connected with a locking nut 13 at the position close to the right end in a threaded manner, and the locking nut 13 is used for locking the screw rod 12.

The clamping plate assembly comprises a clamping and locking plate 8, a right-extending convex column 21 is arranged in the center of the right end of the impeller 2, and a left-extending convex shaft 91 is arranged at the left end of the rotating shaft 9; a shaft hole 22 for the protruding shaft 91 to extend into is formed in the protruding column 21, a slot 23 communicated with the shaft hole 22 is formed in the protruding column 21 in the direction perpendicular to the shaft hole 22, the locking plate 8 is inserted into the slot 23, a U-shaped slot hole 8b and a circular slot hole 8a communicated with the U-shaped slot hole 8b are formed in the locking plate 8, and the circular slot hole 8a is used for the protruding shaft 91 to extend into; a clamping groove 9a matched with the U-shaped slotted hole 8b is formed in the side face, close to the left end, of the convex shaft 91; when the U-shaped slot hole 8b and the clamping groove 9a are mutually clamped, the convex column 21 is fixedly connected with the convex shaft 91; when the U-shaped slot hole 8b is separated from the clamping groove 9a and the circular slot hole 8a and the convex shaft 91 are in the same axial position, the impeller 2 is pulled towards the direction far away from the rotating shaft 9 so that the impeller 2 is separated from the convex shaft 91; when the locking plate 8 slides upwards to the first position, the U-shaped slot hole 8b is mutually locked with the locking groove 9a; when the locking plate 8 slides downwards to the second position, the U-shaped slot hole 8b is separated from the locking groove 9a, and the circular slot hole 8a and the protruding shaft 91 are in the same axial position; a first control component for forcing the locking plate 8 to slide upwards to a first position is arranged in the slot 23; and a second control assembly for controlling the locking plate 8 to slide downwards to a second position is arranged in the end cover 3.

The lateral wall of slot 23 is equipped with spout 24 along the 8 direction of motion of latch board, first control assembly includes first spring 16, be equipped with the flange 81 that stretches into in the spout 24 on the latch board 8, first spring 16 is in and is used for forcing flange 81 to drive latch board 8 upwards to the first position by the compression state and be located spout 24. The second control assembly comprises a pressing rod 5, a slide way 39 is arranged on the side wall of an inner hole of the end cover 3 along the movement direction of the locking plate 8, the pressing rod 5 is connected in the end cover 3 in a sliding manner along the vertical direction, the lower end of the pressing rod 5 extends into the end cover 3 and is provided with a control ring 52 connected in the slide way 39 in a sliding manner, the convex column 21 is positioned in the control ring 52, and the control ring 52 and the locking plate 8 are positioned in the same plane; a convex shoulder 51 is arranged at the end part of the pressing rod 5 extending out of the end cover 3, a second spring 4 is sleeved on the pressing rod 5, and the second spring 4 is positioned between the end cover 3 and the convex shoulder 51 and is in a compressed state; pushing the pressing rod 5 drives the control ring 52 to push the latch plate 8 to move downward to the second position.

The left end in the shaft hole 22 of projection 21 is equipped with spring hole 29, locate slide 7 in the spring hole 29 to and be used for forcing the third spring 6 of slide 7 rightward movement, be equipped with the second ejector pin 72 that stretches into first ejector pin 71 in the shaft hole 22 and stretch into slot 23 on the slide 7, when the card locking plate 8 slided to the second position downwards, second ejector pin 72 stretched into the lower extreme of U-shaped slotted hole 8b, when protruding axle 91 stretched into in the shaft hole 22, first ejector pin 71 pushed up the left end at protruding axle 91 tightly.

When the clearance between impeller 2 and friction plate 15 became big, can unscrew lock nut 13, because lock nut 13 and lead screw 12 threaded connection for the nut moves right vacates the migration distance, then through the rotatory lead screw 12 of hexagon socket head on lead screw 12 right side, because lead screw 12 and locating piece 14 threaded connection, make lead screw 12 move right, drive locating pin 11 and move right, make pump case 1 can be relative end cover 3 and move right, thereby reduce the clearance between friction plate 15 and the 2 left ends of impeller.

When the impeller 2 needs to be disassembled, firstly, the positioning block 14 needs to be rotated against the spring piece 10, and the positioning pin 11 is withdrawn from the positioning hole 1a, so that the pump shell 1 is disassembled; when the impeller 2 is rotated to enable the part, extending out of the convex column 21, of the locking plate 8 to vertically move upwards, the second spring 4 is overcome to push the control ring 52 to move downwards, the control ring 52 pushes the locking plate 8 to slide downwards to the second position, the convex shaft 91 enters the circular groove hole 8a, the U-shaped groove hole 8b is separated from the clamping groove 9a, the third spring 6 pushes the first ejector rod 71 and the second ejector rod 72 to move rightwards, the second ejector rod 72 enters the U-shaped groove hole 8b to be positioned, the first ejector rod 71 can push the convex shaft 91 out of the impeller 2, and therefore the impeller 2 is detached.

When the impeller 2 needs to be installed, firstly, the impeller 2 is in an initial state shown in fig. 4; aligning the U-shaped slot hole 8b with the clamping groove 9a; the convex shaft 91 enters the circular slotted hole 8a, the convex shaft 91 pushes the first push rod 71 to move leftwards against the third spring 6, the second push rod 72 exits the U-shaped slotted hole 8b, the first spring 16 pushes the locking plate 8 to move upwards to the first position, the locking plate 8 enters the clamping groove 9a to fix the impeller 2 and the convex shaft 91 together, and the installation of the impeller 2 is completed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A sewage pump comprises a pump shell, wherein a pump cavity is arranged in the pump shell, a liquid inlet pipe communicated with the pump cavity is arranged at the left end of the pump shell, a liquid outlet pipe communicated with the pump cavity is circumferentially arranged on the pump shell, and a friction plate is fixedly arranged on the inner side wall of the left end of the pump cavity at the position of the liquid inlet pipe; the pump is characterized in that an end cover is connected to the opening at the right end of the pump cavity in a sliding mode along the left-right direction, an impeller located in the pump cavity is connected to the end cover in a rotating mode, an adjusting assembly connected with a pump shell is arranged on the end cover, and the adjusting assembly is used for adjusting a gap between the left end of the impeller and a friction plate; a case is fixedly arranged at the right end of the end cover, a rotating shaft is rotatably connected in the case, and the left end of the rotating shaft is connected with the impeller through a clamping plate assembly;

the four adjusting assemblies are uniformly arranged along the circumferential direction of the end cover at intervals; the adjusting assembly comprises a positioning block, an installation groove and a notch communicated with the left end of the installation groove are formed in the end cover, the positioning block is hinged in the installation groove, a lead screw arranged along the left-right direction is connected with the positioning block in a threaded manner, the left end of the lead screw is rotatably connected with a positioning pin, and a positioning hole for the positioning pin to extend into is formed in the inner side wall of the opening at the right end of the pump shell; a spring piece for forcing the positioning block to drive the positioning pin to extend into the positioning hole is fixedly arranged in the mounting groove; the right end of the screw rod is provided with an inner hexagon;

the clamping plate assembly comprises a clamping and locking plate, a right-extending convex column is arranged in the center of the right end of the impeller, and a left-extending convex shaft is arranged at the left end of the rotating shaft; the convex column is internally provided with a shaft hole for the convex shaft to extend into, the convex column is internally provided with a slot communicated with the shaft hole along the direction vertical to the shaft hole, the locking plate is inserted into the slot, the locking plate is internally provided with a U-shaped slot hole and a round slot hole communicated with the U-shaped slot hole, and the round slot hole is used for the convex shaft to extend into; the side surface of the convex shaft close to the left end is provided with a clamping groove matched with the U-shaped slotted hole; when the U-shaped slot hole and the clamping groove are mutually clamped, the convex column is fixedly connected with the convex shaft; when the U-shaped slot hole is separated from the clamping groove and the circular slot hole and the convex shaft are in the same axial position, the impeller is pulled to the direction far away from the rotating shaft so that the impeller can be separated from the convex shaft; when the locking plate slides upwards to the first position, the U-shaped slotted hole is mutually clamped with the clamping groove; when the locking plate slides downwards to the second position, the U-shaped slotted hole is separated from the locking groove, and the circular slotted hole and the convex shaft are in the coaxial position; a first control assembly used for forcing the clamping and locking plate to slide upwards to a first position is arranged in the slot; a second control assembly used for controlling the card locking plate to slide downwards to a second position is arranged in the end cover;

the side wall of the slot is provided with a sliding groove along the movement direction of the clamping and locking plate, the first control assembly comprises a first spring, the clamping and locking plate is provided with a convex plate extending into the sliding groove, and the first spring is in a compressed state and is positioned in the sliding groove and used for forcing the convex plate to drive the clamping and locking plate to slide upwards to a first position;

the second control assembly comprises a pressing rod, a slide way is arranged on the side wall of an inner hole of the end cover along the movement direction of the clamping and locking plate, the pressing rod is connected in the end cover in a sliding manner along the vertical direction, the lower end of the pressing rod extends into the end cover and is provided with a control ring connected in the slide way in a sliding manner, the convex column is positioned in the control ring, and the control ring and the clamping and locking plate are positioned in the same plane; a convex shoulder is arranged at the end part of the pressing rod extending out of the end cover, a second spring is sleeved on the pressing rod, and the second spring is positioned between the end cover and the convex shoulder and is in a compressed state; the pushing rod is pushed to drive the control ring to push the locking plate to move downwards to the second position.

2. The dredge pump of claim 1, where the screw shaft is threaded near the right end with a locking nut for locking the screw shaft.

3. The dredge pump of claim 2, characterized in that the convex column is provided with a spring hole at the left end of the shaft hole, the spring hole is provided with a sliding plate, and a third spring for forcing the sliding plate to move rightwards, the sliding plate is provided with a first push rod extending into the shaft hole and a second push rod extending into the slot, when the locking plate slides downwards to the second position, the second push rod extends into the lower end of the U-shaped slot hole, and when the convex shaft extends into the shaft hole, the first push rod is pressed against the left end of the convex shaft.