CN219827162U - Single-stage self-priming pump - Google Patents

Abstract

The utility model relates to a single-stage self-priming pump which comprises a motor part and a pump part, wherein the motor part is a motor, the motor comprises a motor body, a rotating shaft and an end cover, the rotating shaft is rotationally connected to the motor body, a plurality of cooling fins are arranged on the outer wall of the motor body, a pump shaft is rotationally connected to the pump part, the rotating shaft is coaxially and fixedly connected to the pump shaft, a connecting rod is arranged on the motor body, a mounting ring is arranged on the connecting rod, the mounting ring and the rotating shaft are coaxially arranged and sleeve the motor body, an annular gap is reserved between the mounting ring and the motor body, the annular gap faces the cooling fins, and the end cover is sleeved and in threaded connection with the mounting ring. Through changing the mounting means of end cover, make end cover threaded connection on the collar, can not have extra mounting part anymore when the end cover is dismantled, can avoid because the influence of mounting part loss to the end cover installation.

Description

Single-stage self-priming pump

Technical Field

The utility model relates to the field of water pumps, in particular to a single-stage self-priming pump.

Background

The self-priming water pump is one kind of water pump. The principle is that the pump shell is filled with water before the water pump is started. After the impeller is started, the impeller rotates at a high speed to enable the water inlet to form vacuum, and air in the suction pipe enters the pump and reaches the outer edge through the impeller channel. Through repeated circulation, the air in the suction pipeline is gradually exhausted, so that water enters the pump, and the self-priming process is completed.

The related art single-stage self-priming pump is shown in fig. 1, and comprises a motor part 1 and a pump part 2, wherein the motor part 1 is a motor, the motor comprises a motor body 11, an end cover 13, a radiator fan 14 and a rotating shaft 12, the rotating shaft 12 is rotationally connected to the motor body 11, the radiator fan 14 is arranged at one end of the rotating shaft 12 extending out of the motor body 11, the end cover 13 is detachably connected to the motor body 11 through a plurality of bolts 17 and covers the radiator fan 14, one end of the bolts 17 penetrates through the end cover 13 and is in threaded connection with the motor body 11, and a plurality of dust filtering holes 132 are formed in the side surface of the end cover 13, which is far away from the motor body 11. The pump part 2 is rotationally connected with a pump shaft, a single-stage impeller is connected on the pump shaft, and the rotating shaft 12 is coaxially and fixedly connected on the pump shaft. The pump part 2 is also provided with a water inlet 21 and a water outlet 22, the starting motor drives the pump shaft to rotate so as to drive the multistage impeller on the pump shaft to rotate, and sewage is sucked into the pump shell from the water inlet 21 and then discharged through the water outlet 22.

The related technical scheme has the following defects: above-mentioned single-stage self priming pump is after using a period, and a plurality of filtration holes on the end cover can be blocked by the dust to influence the air current velocity that radiator fan drove, influence the radiating effect, at this moment operating personnel need unscrew the bolt, install motor body again after the end cover clearance, because the bolt is dismantled the back and is lost easily, in case lose the installation that can influence the end cover on motor body, thereby influence single-stage self priming pump's normal use.

Disclosure of Invention

In order to reduce the influence of the loss of mounting parts on the mounting of the end cover, the utility model provides a single-stage self-priming pump.

The utility model provides a single-stage self-priming pump which adopts the following technical scheme:

the utility model provides a single-stage self priming pump, includes motor portion and pump portion, motor portion is the motor, the motor includes motor body, pivot and end cover, the pivot rotates to be connected on motor body, be equipped with a plurality of fin on the motor body outer wall, the pump portion internal rotation is connected with the pump shaft, the coaxial fixed connection of pivot is on the pump shaft, be equipped with the connecting rod on the motor body, be equipped with the collar on the connecting rod, collar and the coaxial setting of pivot are established including the motor body cover, leave annular gap between collar and the motor body, annular gap is just a plurality of fin, the end cover is established and threaded connection is on the collar.

Preferably, the connecting rods are multiple, two ends of each connecting rod are respectively fixed on the outer wall of the motor body and the inner wall of the mounting ring, the connecting rods are sequentially fixed on the mounting ring along the circumferential direction of the mounting ring, the annular gaps are divided into multiple fan-shaped gaps by the connecting rods, and the multiple fan-shaped gaps are opposite to the multiple radiating fins.

Preferably, a chamfer is formed on one end, close to the motor body, of the circumferential inner wall of the end cover along the circumferential edge.

Preferably, the motor further comprises a locking device, wherein the locking device is used for reducing the probability of loosening of the end cover which is in threaded connection with the motor body.

Preferably, the anti-loosening device is an elastic piece, an abutting ring is coaxially arranged on the inner wall of the end cover, the elastic piece is arranged on the mounting ring, the abutting ring is located on one side, far away from the pump part, of the mounting ring, the elastic piece is located between the abutting ring and the mounting ring, and when the end cover is in threaded connection with the mounting ring, the elastic piece always applies force on the abutting ring towards one side, far away from the pump part.

Preferably, the projection of the abutment ring onto the mounting ring is located entirely on the mounting ring when the end cap is threaded onto the mounting ring.

Preferably, the elastic piece comprises a first block, a second block and a spring, wherein the first block is fixed on one side face of the mounting ring, which faces the abutting ring, a sliding groove is formed in one side face of the first block, which is far away from the mounting ring, the second block is slidably connected in the sliding groove along the axis direction parallel to the rotating shaft, the spring is positioned in the sliding groove, two ends of the spring are respectively arranged on the bottom wall of the sliding groove and the second block, and the second block is used for abutting on the mounting ring.

Preferably, the abutting ring is provided with a plurality of first protrusions on one side face of the second block, the first protrusions are sequentially distributed along the circumferential direction of the abutting ring, the state that the end cover is in threaded connection on the mounting ring is used as a reference, the length direction of the first protrusions is perpendicular to the axis direction of the rotating shaft, the extension lines of the first protrusions are intersected with the axis of the rotating shaft, the second block is provided with second protrusions on one side face of the second block, the length direction of the second protrusions is perpendicular to the axis direction of the rotating shaft, the extension lines of the second protrusions are intersected with the axis of the rotating shaft, and the second protrusions are located between the corresponding adjacent first protrusions.

The technical effects of the utility model are mainly as follows:

1. according to the utility model, the mounting mode of the end cover is changed, so that the end cover is in threaded connection with the mounting ring, no additional mounting part is required when the end cover is detached, and the influence on the mounting of the end cover caused by the loss of the mounting part can be avoided.

2. According to the utility model, the elastic piece is arranged, so that the elastic piece can generate continuous elastic force, so that the threaded connection of the end cover and the mounting ring can keep a friction force, and a resistance moment is generated, thereby reducing the loosening probability of the end cover.

3. According to the utility model, the first bulge and the second bulge are arranged, so that when the end cover is loosened and rotated, the first bulge and the second bulge are matched to prevent the end cover from rotating, and the probability of further loosening the end cover is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the related art.

Fig. 2 is a schematic overall structure of an embodiment of the present utility model.

Fig. 3 is an assembly schematic diagram of an end cap and a motor body according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of an end cap according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of an elastic member according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a motor section; 11. a motor body; 12. a rotating shaft; 13. an end cap; 131. an abutment ring; 132. a filter hole; 133. chamfering; 134. a first protrusion; 14. a heat radiation fan; 15. a heat sink; 16. a limit stop; 17. a bolt; 2. a pump section; 21. a water inlet; 22. a water outlet; 31. a mounting ring; 32. a connecting rod; 33. an annular gap; 34. a fan-shaped gap; 4. a locking device; 41. an elastic member; 411. a first block; 4111. a chute; 412. a second block; 413. a spring; 414. and a second protrusion.

Detailed Description

The present utility model will be further described in detail below with reference to fig. 2-5, so that the technical solution of the present utility model can be more easily understood and mastered.

The embodiment of the utility model discloses a single-stage self-priming pump.

Referring to fig. 2 and 3, a single-stage self-priming pump of the present embodiment includes a motor portion 1 and a pump portion 2, the motor portion 1 is a motor, and the motor includes a motor body 11 and a rotating shaft 12. The rotating shaft 12 is rotatably connected to the motor body 11, a pump shaft is rotatably connected to the pump part 2, a single-stage impeller is connected to the pump shaft, the rotating shaft 12 is fixedly connected to the pump shaft coaxially, and the pump part 2 is further provided with a water inlet 21 and a water outlet 22. Before starting, water is poured into the pump part 2, the starting motor drives the pump shaft to rotate so as to drive the multistage impeller on the pump shaft to rotate at a high speed, the water inlet 21 forms vacuum, sewage is sucked into the pump shell from the water inlet 21, and then the sewage is discharged through the water outlet 22.

Referring to fig. 2-4, the motor further includes an end cover 13, a heat dissipating fan 14 and a plurality of heat dissipating fins 15, wherein one end of the rotating shaft 12 far away from the pump part 2 is connected with the heat dissipating fan 14, the end cover 13 is detachably connected to the motor body 11 and covers the heat dissipating fan 14, and a plurality of filtering holes 132 for filtering dust are formed in a side surface of the end cover 13 far away from the motor body 11. The cooling fins 15 are fixed on the outer wall of the motor body 11, the length direction of the cooling fins 15 is parallel to the axis direction of the rotating shaft 12, and a plurality of cooling fins 15 are uniformly fixed on the outer wall of the motor body 11 along the circumferential direction of the motor body 11.

Referring to fig. 2-4, a single-stage self-priming pump of the present embodiment further includes a mounting ring 31 and a plurality of connecting rods 32, wherein two ends of the connecting rods 32 are respectively fixed on the circumferential outer wall of the motor body 11 and the circumferential inner wall of the mounting ring 31, the mounting ring 31 is coaxially arranged with the rotating shaft 12 and is used for sleeving the motor body 11, and the mounting ring 31 is located at one side of the cooling fin 15 close to the cooling fan 14. The length direction of the connecting rods 32 is perpendicular to the length direction of the rotating shaft 12, the extension lines of the connecting rods 32 intersect with the axis of the rotating shaft 12, and the plurality of connecting rods 32 are uniformly distributed along the circumferential direction of the motor body 11. An annular gap 33 is reserved between the mounting ring 31 and the motor body 11, the annular gap 33 is divided into a plurality of fan-shaped gaps 34 by a plurality of connecting rods 32, and the fan-shaped gaps 34 are arranged opposite to the plurality of cooling fins 15. The end cap 13 is sleeved on one end close to the motor body 11 and is in threaded connection with the mounting ring 31.

Referring to fig. 2-4, the rotation of the rotating shaft 12 of the driving motor drives the cooling fan 14 to rotate, the cooling fan 14 rotates to drive air to flow, and external air is filtered by the filtering holes 132 and then enters the end cover 13 and is blown onto the cooling fins 15 from the fan-shaped gaps 34, so that the motor body 11 is cooled by air.

Referring to fig. 2 to 4, a plurality of limit stops 16 are fixed on the motor body 11, the limit stops 16 are located between the mounting ring 31 and the plurality of cooling fins 15, the plurality of limit stops 16 are uniformly distributed along the circumferential direction of the motor body 11, the limit stops 16 hardly shield the cooling fins 15, and when the end cover 13 is abutted to the limit stops 16 when the end cover 13 is screwed on the motor body 11, the end cover 13 is proved to be installed.

Referring to fig. 2 to 4, in order to facilitate the installation of the end cover 13, a chamfer 133 is provided along a circumferential edge of one end of the circumferential inner wall of the end cover 13, which is close to the motor body 11, and since it is difficult for an operator to directly screw the end cover 13 with respect to the mounting ring 31, the chamfer 133 plays a certain guiding role, helping the end cover 13 with respect to the mounting ring 31.

Referring to fig. 3-5, a single-stage self-priming pump of the present embodiment further includes a locking device 4, and since the single-stage self-priming pump vibrates during operation, the end cover 13 is easy to loosen, and the locking device 4 is used for reducing the probability of loosening the end cover 13 screwed on the motor body 11.

Referring to fig. 3 to 5, the locking device 4 includes two elastic members 41, an abutment ring 131 is coaxially fixed to the circumferential inner wall of the end cover 13, and the elastic members 41 are disposed on the mounting ring 31. In the following, referring to a state in which the end cap 13 is screwed to the mounting ring 31, the abutting ring 131 is provided coaxially with the rotating shaft 12, the abutting ring 131 is located on a side of the mounting ring 31 away from the heat sink 15, and a projection of the abutting ring 131 on the mounting ring 31 is entirely located on the mounting ring 31. The elastic member 41 is located between the abutment ring 131 and the mounting ring 31, and the elastic member 41 is always biased against the abutment ring 131 toward the side away from the pump section 2.

Referring to fig. 3-5, the elastic member 41 includes a first block 411, a second block 412 and a spring 413, wherein the first block 411 is fixed on a side surface of the mounting ring 31 facing the abutment ring 131, and two first blocks 411 on two elastic members 41 are respectively located on two sides of the rotating shaft 12 and are opposite to each other. The side surface of the first block 411, which is far away from the mounting ring 31, is provided with a sliding groove 4111 along the axial direction of the rotating shaft 12, the second block 412 is connected in the sliding groove 4111 in a sliding manner along the axial direction parallel to the rotating shaft 12, the spring 413 is positioned in the sliding groove 4111, and two ends of the spring 413 are respectively fixed on the bottom wall of the sliding groove 4111 and the side surface of the second block 412, which faces the bottom wall of the sliding groove 4111. When the end cap 13 is screwed to the mounting ring 31, the second block 412 is always biased toward the mounting ring 31 side by the spring 413 and abuts against the mounting ring 31.

Referring to fig. 3-5, the spring 413 provides a constant spring force that maintains a friction force on the threaded connection of the end cap 13 to the mounting ring 31, creating a resistive moment, thereby reducing the chance of loosening the end cap 13.

Referring to fig. 3 to 5, in order to further reduce the possibility of loosening of the end cap 13, reference is made below to the state in which the end cap 13 is screwed onto the mounting ring 31. A plurality of first protrusions 134 are fixed on a side surface of the abutting ring 131 facing the second block 412, the plurality of first protrusions 134 are sequentially distributed along the circumferential direction of the abutting ring 131, the length direction of the first protrusions 134 is perpendicular to the axial direction of the rotating shaft 12, and an extension line of the first protrusions 134 intersects with the axial line of the rotating shaft 12. A second protrusion 414 is fixed on a side surface of the second block 412 facing the first block 411, a length direction of the second protrusion 414 is perpendicular to an axial direction of the rotating shaft 12, an extension line of the second protrusion 414 intersects with the axial direction of the rotating shaft 12, and the second protrusion 414 is located between the corresponding adjacent first protrusions 134. When the end cover 13 is in loose rotation, the first protrusion 134 and the second protrusion 414 cooperate to block the rotation of the end cover 13, so that the probability of further loosening of the end cover 13 is reduced.

Referring to fig. 3 to 5, the first protrusions 134 and the second protrusions 414 are disposed in a semicircular shape in cross section, and an axial direction of the semicircle is parallel to a length direction of the corresponding first protrusion 134 or second protrusion 414. When the end cover 13 is detached and installed, an operator rotates the end cover 13, because of the cooperation of the spring 413 and the first protrusion 134 and the second protrusion 414, the operator needs a certain force to rotate the end cover 13, and vibration generated when the single-stage self-priming pump works is insufficient to overcome the action of the spring 413 and the first protrusion 134 and the second protrusion 414, so that the end cover 13 is loosened.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims (8)

1. The utility model provides a single-stage self priming pump, includes motor portion (1) and pump portion (2), motor portion (1) is the motor, the motor includes motor body (11), pivot (12) and end cover (13), pivot (12) rotate and connect on motor body (11), be equipped with a plurality of fin (15) on motor body (11) outer wall, pump portion (2) internal rotation is connected with the pump shaft, coaxial fixed connection of pivot (12) is on the pump shaft, its characterized in that: be equipped with connecting rod (32) on motor body (11), be equipped with collar (31) on connecting rod (32), collar (31) are coaxial with pivot (12) setting and establish motor body (11) cover including, leave annular clearance (33) between collar (31) and motor body (11), annular clearance (33) are just to a plurality of fin (15), end cover (13) cover is established and threaded connection is on collar (31).

2. A single stage self priming pump as claimed in claim 1, wherein: the connecting rods (32) are multiple, two ends of each connecting rod (32) are respectively fixed on the outer wall of the motor body (11) and the inner wall of the mounting ring (31), the connecting rods (32) are sequentially fixed on the mounting ring (31) along the circumferential direction of the mounting ring (31), the annular gaps (33) are divided into a plurality of fan-shaped gaps (34) by the connecting rods (32), and the fan-shaped gaps (34) are opposite to the radiating fins (15).

3. A single stage self priming pump as claimed in claim 1, wherein: a chamfer (133) is formed on the circumferential inner wall of the end cover (13) near one end of the motor body (11) along the circumferential edge.

4. A single stage self priming pump as claimed in claim 1, wherein: the motor further comprises a locking device (4), and the locking device (4) is used for reducing the probability of loosening of an end cover (13) which is connected to the motor body (11) in a threaded mode.

5. A single stage self priming pump according to claim 4, wherein: the anti-loosening device is characterized in that the anti-loosening device (4) is an elastic piece (41), an abutting ring (131) is coaxially arranged on the inner wall of the end cover (13), the elastic piece (41) is arranged on the mounting ring (31), the abutting ring (131) is located on one side, far away from the pump part (2), of the mounting ring (31), the elastic piece (41) is located between the abutting ring (131) and the mounting ring (31), and when the end cover (13) is in threaded connection on the mounting ring (31), the elastic piece (41) always applies force on the abutting ring (131) towards one side far away from the pump part (2).

6. A single stage self priming pump as defined in claim 5, wherein: when the end cover (13) is in threaded connection with the mounting ring (31), the projection of the abutting ring (131) on the mounting ring (31) is completely positioned on the mounting ring (31).

7. A single stage self priming pump as defined in claim 5, wherein: the elastic piece (41) comprises a first block (411), a second block (412) and a spring (413), wherein the first block (411) is fixed on one side face of the mounting ring (31) towards the abutting ring (131), a sliding groove (4111) is formed in one side face of the first block (411) away from the mounting ring (31), the second block (412) is slidably connected in the sliding groove (4111) along the axis direction parallel to the rotating shaft (12), the spring (413) is located in the sliding groove (4111), and two ends of the spring (413) are respectively arranged on the bottom wall of the sliding groove (4111) and the second block (412), and the second block (412) is used for being abutted to the mounting ring (31).

8. A single stage self priming pump according to claim 7, wherein: the butt ring (131) is equipped with many first protruding (134) on the side of one side of second piece (412), and many first protruding (134) are along the circumference direction of butt ring (131) distributes in proper order, and with the state of end cover (13) threaded connection on collar (31) as the reference, the axial direction of the length direction perpendicular to pivot (12) of first protruding (134) and the extension line of first protruding (134) intersect with the axis of pivot (12), be equipped with second protruding (414) on the side of one side of second piece (412) towards first piece (411), the length direction perpendicular to axis direction of pivot (12) and the extension line of second protruding (414) intersect with the axis of pivot (12), second protruding (414) are located between corresponding adjacent first protruding (134).