CN219953681U

CN219953681U - High-efficiency small-flow closed miniature low-temperature centrifugal pump with inducer

Info

Publication number: CN219953681U
Application number: CN202321575970.5U
Authority: CN
Inventors: 刘天奇; 卫跃强
Original assignee: Anhui Kaixuan Pumps Valves Manufacture Co ltd
Current assignee: Anhui Kaixuan Pumps Valves Manufacture Co ltd
Priority date: 2023-06-17
Filing date: 2023-06-17
Publication date: 2023-11-03
Anticipated expiration: 2033-06-17

Abstract

The utility model discloses a high-efficiency small-flow closed type miniature low-temperature centrifugal pump with an inducer, which belongs to the field of centrifugal pumps and comprises a base, wherein one side of the top of the base is detachably provided with a pump shell through a fastening bolt, one side of the pump shell is fixedly communicated with an inlet pipe, the top of the pump shell is fixedly communicated with a discharge pipe, an impeller is arranged in the pump shell, one side of the impeller is detachably provided with an inducer, the inducer comprises inducer sheets positioned in the inlet pipe, the other side of the pump shell is rotatably connected with a driving shaft, and one end of the driving shaft is fixedly connected with the impeller. According to the utility model, the induction assembly and the impeller are detachably arranged, so that a worker can conveniently replace different induction wheels according to actual centrifugal conditions, and the problem that the inducer is inconvenient to overhaul and replace when the inducer is damaged in long-term working due to the fact that the inducer is connected in an integral fixing mode is solved.

Description

High-efficiency small-flow closed miniature low-temperature centrifugal pump with inducer

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a high-efficiency small-flow closed type miniature low-temperature centrifugal pump with an inducer.

Background

The Chinese patent with the publication number of CN209638082U discloses a high-efficiency centrifugal pump with an inducer, which comprises a pump shell, a motor shaft, a pump cavity and a front end cover, wherein an impeller fixed with the motor shaft is arranged in the pump cavity, a water inlet pipe is arranged on the front end cover, a water outlet pipe is arranged on the pump cavity, a guide cavity is further arranged between the pump cavity and the front end cover, the rear end of the guide cavity is communicated with the pump cavity, and the front end of the guide cavity is communicated with the water inlet pipe; a guide wheel assembly is arranged in the guide cavity. By adopting the technical scheme, after the guide wheel assembly is additionally arranged, the suction force of the centrifugal pump is increased, the cavitation allowance of the inlet pipe inlet of the centrifugal pump is greatly reduced, the height of the centrifugal pump can be increased, and the application range of the centrifugal pump is enlarged.

In the related art, certain defects exist in the installation and use processes of inducer in the traditional centrifugal pump, for example, the inducer in the centrifugal pump is generally arranged in a pump shell in an integrally fixed mode, while the centrifugal pump in the prior art is independently installed among a motor, an impeller and a guide wheel assembly, however, when the impeller or the guide wheel assembly is maintained, the pump shell of the centrifugal pump is required to be dismantled, the maintenance effect is poor, and the guide assembly cannot be directly and independently dismantled.

Disclosure of Invention

The utility model aims to provide a high-efficiency small-flow closed miniature low-temperature centrifugal pump with an inducer, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a miniature low temperature centrifugal pump of high-efficient low discharge closed type of area inducer, includes the base, the pump case is installed through fastening bolt detachable to one side at base top, one side fixed intercommunication of pump case has the admission line, the fixed intercommunication in top of pump case has the discharge pipe, the inside of pump case is provided with the impeller, the inducible assembly is installed to one side detachable of impeller, inducible assembly is including being located the inducer piece of admission line inside, the opposite side rotation of pump case is connected with the drive shaft, and the one end and the impeller fixed connection of drive shaft, the opposite side at base top is through fastening bolt fixedly connected with motor, the output shaft of motor passes through the connecting piece and is connected with the other end of drive shaft.

As a further preferable aspect of the present utility model, the inducer comprises a movable shaft detachably connected to one side of the impeller, and the inducer is fixed to an outer surface of the movable shaft.

As a further preferable mode of the technical scheme, the inside of the movable shaft is provided with a driving groove, one side of the inner wall of the driving groove is rotationally connected with an inner hexagon bolt, the movable shaft is fixedly connected with the impeller through the inner hexagon bolt, and one side of the inner wall of the impeller is provided with a threaded hole in threaded connection with the inner hexagon bolt.

As a further preferable mode of the technical scheme, the connecting piece comprises a rectangular block fixedly connected with the motor output shaft and a round block fixed at the other end of the driving shaft, and a rectangular groove is formed in one side of the round block.

As a further preferable mode of the technical scheme, the outer surface of the rectangular block is provided with four hemispherical grooves, and four locking pieces for locking the rectangular block are arranged in the round block.

As the further preferred of this technical scheme, the retaining member is including seting up the inside movable groove in circular piece, and the inside in movable groove communicates with the rectangle inslot, and the inside sliding connection in movable groove has the retaining block, and the bottom of retaining block sets up to the hemisphere, one side fixedly connected with kicking block at retaining block top, the top sliding connection of movable inslot wall has the stopper, and fixedly connected with spring between one side of stopper and the movable inslot wall, one side fixedly connected with movable rod of stopper, the one end of movable rod extends to the outside of circular piece, the one end fixedly connected with annular drive plate that the movable rod extends to the circular outside of piece.

The utility model provides a high-efficiency small-flow closed miniature low-temperature centrifugal pump with an inducer, which has the following beneficial effects:

(1) According to the utility model, the motor is detachably connected with the driving shaft by adopting the connecting piece, so that workers can conveniently replace different types of motors according to the centrifugal conditions of different liquids, the inducer can be driven to rotate by rotating the impeller, the static suction pressure of the centrifugal pump is reduced, and the inducer is detachably arranged with the impeller by the inducer assembly, so that the workers can conveniently replace different inducer according to the actual centrifugal conditions, and the problem that the inducer is connected in an integral fixing mode, so that the inducer is inconvenient to overhaul and replace when the inducer is damaged during long-term working is solved.

(2) The rectangular blocks positioned in the circular blocks can be locked by inserting the protruding ends of the locking blocks into the hemispherical grooves at the corresponding positions, so that the connection stability of the rectangular blocks and the rectangular blocks is ensured, and when the centrifugal pump is disassembled, the rectangular blocks can be pulled out from the inside of the rectangular grooves by moving one side of the four limiting blocks and losing the locking of the top blocks, so that the centrifugal pump has a good disassembling and assembling function, is convenient for a worker to disassemble the centrifugal pump to form classified carrying, is convenient for the worker to replace parts with different damage faults according to the centrifugal pump, and improves the using effect of the centrifugal pump.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a rear elevational view of the structure of the present utility model;

FIG. 3 is a cross-sectional view of the pump housing of the present utility model;

FIG. 4 is a schematic diagram of the structure of the inducer assembly according to the present utility model;

FIG. 5 is a schematic diagram of the motor of the present utility model;

fig. 6 is a combined cross-sectional view of a circular block and rectangular block of the present utility model.

In the figure: 1. a base; 2. a pump housing; 3. an inlet tube; 4. a discharge pipe; 5. an impeller; 6. an induction assembly; 61. a movable shaft; 62. inducer sheets; 63. a driving groove; 64. an inner hexagon bolt; 7. a drive shaft; 8. a motor; 9. rectangular blocks; 10. a circular block; 11. hemispherical grooves; 12. a locking block; 13. a top block; 14. a limiting block; 15. a spring; 16. a movable rod; 17. an annular drive plate.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

First embodiment

The utility model provides the technical scheme that: as shown in fig. 1-6, in this embodiment, a high-efficiency small-flow closed micro low-temperature centrifugal pump with an inducer comprises a base 1, wherein one side of the top of the base 1 is detachably provided with a pump shell 2 through a fastening bolt, one side of the pump shell 2 is fixedly communicated with an inlet pipe 3, the top of the pump shell 2 is fixedly communicated with an outlet pipe 4, an impeller 5 is arranged in the pump shell 2, one side of the impeller 5 is detachably provided with an inducer 6, the inducer 6 comprises an inducer piece 62 positioned in the inlet pipe 3, the other side of the pump shell 2 is rotatably connected with a driving shaft 7, one end of the driving shaft 7 is fixedly connected with the impeller 5, the other side of the top of the base 1 is fixedly connected with a motor 8 through a fastening bolt, and an output shaft of the motor 8 is connected with the other end of the driving shaft 7 through a connecting piece;

the motor 8 is detachably connected with the driving shaft 7 by adopting a connecting piece, so that a worker can conveniently replace different types of motors 8 according to the centrifugal conditions of different liquids, and the centrifugal work can be formed by rotating and driving the impeller 5 by the motor 8;

through the rotation of impeller 5, can drive inducer piece 62 and rotate, carry out centrifugal pump's quiet positive suction pressure's reduction, through inducer 6 and impeller 5 detachable installation moreover, the staff of being convenient for carries out the change work of different inducer according to actual centrifugation condition, has solved inducer and has adopted integrative fixed mode to connect, so that inducer when the loss appears in long-term work, is inconvenient for carrying out the maintenance and change problem.

As shown in fig. 3 and 4, the inducer assembly 6 includes a movable shaft 61 detachably connected to one side of the impeller 5, and inducer pieces 62 are fixed to the outer surface of the movable shaft 61;

by the arrangement of the inducer 62, the static positive suction pressure of the centrifugal pump is reduced, and the static pressure of the inlet of the first-stage impeller 5 of the centrifugal pump is increased by the inducer. The induced rotational flow (the direction to be rotated is the same as the rotation direction of the impeller 5 of the centrifugal pump) from the impeller has a function of reducing the net positive suction pressure head of the centrifugal pump.

As shown in fig. 3 and 4, a driving groove 63 is formed in the movable shaft 61, one side of the inner wall of the driving groove 63 is rotatably connected with an inner hexagon bolt 64, the movable shaft 61 is fixedly connected with the impeller 5 through the inner hexagon bolt 64, and one side of the inner wall of the impeller 5 is provided with a threaded hole in threaded connection with the inner hexagon bolt 64;

through the setting of hexagon socket head cap screw 64, the staff of being convenient for borrows outer hexagonal spanner to carry out fixed connection with loose axle 61 and impeller 5, through with hexagon socket head cap screw 64's bolt shank revolve screw thread hole on the impeller 5 in, can form the locking, when dismantling moreover, through outer hexagonal spanner to hexagon socket head cap screw 64's reverse screwing, can form the dismantlement work that breaks away from with the screw thread hole, formation induction component 6.

The utility model provides a high-efficiency small-flow closed miniature low-temperature centrifugal pump with an inducer, which has the following specific working principle:

when the inducer plate 62 is installed, the whole inducer assembly 6 is inserted into the pump shell 2 through the inlet pipe 3, one end of the movable shaft 61 in the inducer assembly 6 is inserted into the impeller 5, a worker inserts the inside of the driving groove 63 by using an external hexagonal wrench and screws the internal hexagonal bolt 64, locking can be formed by screwing the bolt rod of the internal hexagonal bolt 64 into the threaded hole on the impeller 5, and when the inducer assembly is disassembled, reverse screwing of the internal hexagonal bolt 64 can be separated from the threaded hole by using the external hexagonal wrench, so that the disassembly work of the inducer assembly 6 is formed.

Second embodiment

Referring to fig. 5-6 in combination, according to a first embodiment of the present utility model, a second embodiment of the present utility model provides another high-efficiency small-flow closed micro low-temperature centrifugal pump with an inducer. The second embodiment is merely a preferred manner of the first embodiment, and implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the second embodiment of the present utility model provides a high-efficiency small-flow closed micro low-temperature centrifugal pump with an inducer, which is different in that the connecting piece includes a rectangular block 9 fixedly connected with an output shaft of a motor 8, and a circular block 10 fixed at the other end of a driving shaft 7, wherein one side of the circular block 10 is provided with a rectangular groove;

the rectangular block 9 is inserted into the rectangular groove formed in one side of the circular block 10, so that the rectangular block 9 and the circular block 10 form rotary clamping, the rotary driving of the motor 8 is guaranteed, the circular block 10 can be driven to rotate, and the impeller 5 can be driven to rotate through the driving shaft 7.

Four hemispherical grooves 11 are formed in the outer surface of the rectangular block 9, and four locking pieces for locking the rectangular block 9 are arranged in the round block 10;

through the setting of retaining member for cooperate four hemisphere grooves 11 can carry out the chucking to rectangular block 9, guarantee its rectangular block 9 and insert the inside stability in rectangular channel.

The locking piece comprises a movable groove which is formed in the circular block 10, the inside of the movable groove is communicated with the inside of the rectangular groove, the inside of the movable groove is slidably connected with a locking block 12, the bottom of the locking block 12 is a hemispherical surface, one side of the top of the locking block 12 is fixedly connected with a top block 13, the top of the inner wall of the movable groove is slidably connected with a limiting block 14, a spring 15 is fixedly connected between one side of the limiting block 14 and the inner wall of the movable groove, one side of the limiting block 14 is fixedly connected with a movable rod 16, one end of the movable rod 16 extends to the outside of the circular block 10, and one end of the movable rod 16 extends to the outside of the circular block 10 is fixedly connected with an annular driving plate 17;

through the setting of stopper 14, can lock kicking block 13, guarantee the inside stability of its latch segment 12 protrusion rectangular channel, insert in the hemisphere groove 11 of corresponding position through the protruding end of latch segment 12, can lock the inside rectangular block 9 of circular piece 10, guarantee the stability of its both connections, moreover during the dismantlement, through the motion of staff's hand to annular drive plate 17 one side, can drive four movable rod 16 one side movements, finally can drive four stopper 14 one side movements, lose the locking to kicking block 13, at this moment can take rectangular block 9 out from the inside of rectangle groove, have good dismouting function, not only be convenient for the staff dismantles the centrifugal pump, form categorised carrying, the staff is convenient for the part of the different damage trouble of centrifugal pump is changed moreover, improve the result of use of its centrifugal pump.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a miniature low temperature centrifugal pump of high-efficient low discharge closed of area inducer, includes base (1), its characterized in that: one side at base (1) top is through fastening bolt detachable installs pump case (2), one side fixedly connected with admission pipe (3) of pump case (2), the fixed intercommunication in top of pump case (2) has discharge pipe (4), the inside of pump case (2) is provided with impeller (5), induction subassembly (6) are installed to one side detachable of impeller (5), induction subassembly (6) are including being located inside inducer piece (62) of admission pipe (3), the opposite side rotation of pump case (2) is connected with drive shaft (7), and the one end and impeller (5) fixed connection of drive shaft (7), the opposite side at base (1) top is through fastening bolt fixedly connected with motor (8), the output shaft of motor (8) is connected with the other end of drive shaft (7) through the connecting piece.

2. The efficient small-flow closed micro low-temperature centrifugal pump with inducer as claimed in claim 1, wherein the low-flow closed micro low-temperature centrifugal pump is characterized in that: the induction assembly (6) comprises a movable shaft (61) which is detachable from one side of the impeller (5), and the inducer sheet (62) is fixed on the outer surface of the movable shaft (61).

3. The efficient small-flow closed micro low-temperature centrifugal pump with inducer as claimed in claim 2, wherein: the inside of loose axle (61) has been seted up drive slot (63), one side rotation of drive slot (63) inner wall is connected with hexagon socket head cap screw (64), loose axle (61) pass through hexagon socket head cap screw (64) and impeller (5) fixed connection, the screw hole with hexagon socket head cap screw (64) threaded connection is seted up to one side of impeller (5) inner wall.

4. The efficient small-flow closed micro low-temperature centrifugal pump with inducer as claimed in claim 1, wherein the low-flow closed micro low-temperature centrifugal pump is characterized in that: the connecting piece comprises a rectangular block (9) fixedly connected with an output shaft of the motor (8) and a circular block (10) fixed at the other end of the driving shaft (7), and a rectangular groove is formed in one side of the circular block (10).

5. The efficient small-flow closed micro low-temperature centrifugal pump with an inducer as claimed in claim 4, wherein the low-flow closed micro low-temperature centrifugal pump is characterized in that: four hemispherical grooves (11) are formed in the outer surface of the rectangular block (9), and four locking pieces used for locking the rectangular block (9) are arranged in the round block (10).

6. The efficient small-flow closed micro low-temperature centrifugal pump with an inducer as claimed in claim 5, wherein the low-flow closed micro low-temperature centrifugal pump is characterized in that: the retaining member is including offering the inside movable groove in circular piece (10), and the inside in movable groove communicates with the inside of rectangular groove, and the inside sliding connection in movable groove has retaining block (12), and the bottom of retaining block (12) sets up to the hemisphere, one side fixedly connected with kicking block (13) at retaining block (12) top, the top sliding connection of movable inslot wall has stopper (14), and fixedly connected with spring (15) between one side of stopper (14) and the movable inslot wall, one side fixedly connected with movable rod (16) of stopper (14), the one end of movable rod (16) extends to the outside of circular piece (10), one end fixedly connected with annular drive plate (17) outside movable rod (16) extends to circular piece (10).