CN215521251U

CN215521251U - Small-power rubber ball pump

Info

Publication number: CN215521251U
Application number: CN202023114431.0U
Authority: CN
Inventors: 郭栋梁
Original assignee: Qingdao Haozhou Power Equipment Co ltd
Current assignee: Qingdao Haozhou Power Equipment Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2022-01-14
Anticipated expiration: 2030-12-22

Abstract

The utility model provides a low-power rubber ball pump, and relates to the technical field of rubber ball pumps. The output shaft of the motor is in transmission connection with a pump shaft positioned in the pump body through a coupler, one end of the pump shaft is sleeved with a rolling bearing and is connected in series into a bearing chamber, the other end of the pump shaft is provided with an impeller, the impeller is a closed triangular arc impeller, the inside of the impeller is an inner cavity for fluid to pass through, the middle parts of the first side wall, the second side wall and the third side wall respectively protrude outwards, the middle part of the front wall is provided with a water inlet communicated with the inner cavity, and the first side wall, the second side wall and the third side wall are respectively provided with a water outlet. Compared with the prior art, the utility model has the following technical advantages: the structure of the impeller is improved, so that the power required by the operation of the rubber ball pump is greatly reduced, the operation stability is greatly improved, the impeller adopts a triangular outer circular arc structure, the dynamic balance performance is excellent, the service life of each part of the rubber ball pump is further prolonged, the long-time operation stability is improved, and the maintenance cost is reduced.

Description

Small-power rubber ball pump

Technical Field

The utility model relates to the technical field of rubber ball pumps, in particular to a low-power rubber ball pump.

Background

The rubber ball pump is a special power device for continuously cleaning and circulating rubber balls in the automatic rubber ball cleaning device. At present, a rubber ball cleaning device of a condenser of a thermal power plant selects rubber ball pumps with different performances such as flow rate, lift and the like according to different capacities of a turbo generator set, but the used rubber ball pumps still continue to use the traditional wide flow passage design in order to achieve the purpose of no blockage and no cutting of rubber balls, a pump shell and an impeller are provided with wide flow passages, the rubber ball pumps generally adopt higher power, generally 11-30 kilowatts, the power is higher compared with the whole rubber ball cleaning device, the rubber ball pumps are easy to have operation faults, the working stability of the rubber ball cleaning device is influenced, and the whole rubber ball cleaning device is higher in operation energy consumption and high in maintenance cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low-power rubber ball pump, which overcomes the defects of the prior art.

The specific technical scheme is a miniwatt rubber ball pump, including: the motor and the pump body are positioned above the base, an output shaft of the motor is in transmission connection with a pump shaft positioned in the pump body through a coupler, one side of the pump body, which is close to the motor, is provided with a bearing chamber, one side of the pump body, which is far away from the motor, is provided with a volute, one end of the pump shaft is sleeved with a rolling bearing and is connected in series into the bearing chamber, the other end of the pump shaft is provided with an impeller, the impeller is arranged in the volute and is a closed triangular arc impeller, the impeller is internally provided with an inner cavity for fluid to pass through, the impeller is provided with five wall surfaces, namely a front wall, a rear wall, a first side wall, a second side wall and a third side wall, the front wall and the rear wall are oppositely arranged, the first side wall, the second side wall and the third side wall are connected end to end and are respectively and rigidly connected with the front wall and the rear wall, and the middle parts of the first side wall, the second side wall and the third side wall are respectively protruded outwards, the middle of the rear wall is provided with a clamping key groove in key joint with the pump shaft, the middle of the front wall is provided with a water inlet communicated with the inner cavity, and the first side wall, the second side wall and the third side wall are respectively provided with a water outlet.

Further, the first side wall, the second side wall and the third side wall are all provided with the water outlet at the head end position.

Further, the first side wall, the second side wall and the third side wall are all provided with the water outlet at the tail end position.

Further, the area of the water outlet is less than 35% of the area of the first side wall.

Further, a locking shaft cap is used for fixing the impeller and the pump shaft at the key joint.

The impeller is of a closed triangular arc structure, the middle of the side part of the impeller protrudes outwards, after the motor is started, the impeller can rotate at a high speed through the transmission of the coupler and the pump shaft, water entering the inner cavity of the impeller from the water inlet is thrown out of the water outlet, and the water outlet is located at the end part of the side wall, so that high lift can be realized during low-speed and low-power operation. When in use, the impellers with different outer diameters are assembled according to the requirements of the steam turbine generator unit, and other parts can be unchanged.

Compared with the prior art, the utility model has the following technical advantages: the structure of the impeller is improved, so that the power required by the operation of the rubber ball pump is greatly reduced, the operation stability is greatly improved, good economic benefits are obtained, the low-power motor with the power of 2.2-7.5KW is configured according to different working conditions, and the requirements of turbo generator sets with various capacities below 600MW on the performance of the rubber ball pump can be met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

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

FIG. 2 is an isometric view of an impeller of the present invention;

FIG. 3 is a front view of the impeller of the present invention;

fig. 4 is a left side view of the impeller of the present invention.

Wherein:

1. a motor 2, a coupler 3, a bearing gland 4, a bearing chamber 5, a rolling bearing 6, a pump shaft 7, a volute 8, an impeller 9, a suction horn 10 and a base,

801. first side wall, 802, second side wall, 803, third side wall, 804, water inlet, 805, water outlet, 806, joint keyway, 807, front wall, 808, back wall.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

In the description of the present invention, it should be noted that the terms "inner", "outer", "left" and "right" are used for indicating the orientation or positional relationship based on the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

Example (b): referring to fig. 1-4, a low power ball pump includes: the motor 1 and the pump body are positioned above the base 10, an output shaft of the motor 1 is in transmission connection with a pump shaft 6 positioned inside the pump body through a coupling 2, one side of the pump body close to the motor 1 is provided with a bearing chamber 4, one side far away from the motor 1 is provided with a volute 7, one end of the pump shaft 6 is sleeved with a rolling bearing 5 and is strung into the bearing chamber 4, the other end is provided with an impeller 8, the impeller 8 is arranged inside the volute 7, the impeller 8 is a closed triangular arc impeller, the inside of the impeller 8 is an inner cavity for fluid to pass through, the impeller 8 is provided with five wall surfaces, namely a front wall 807, a rear wall 808, a first side wall 801, a second side wall 802 and a third side wall 803, the front wall 807 and the rear wall 808 are oppositely arranged, the first side wall 801, the second side wall 802 and the third side wall 803 are connected end to end and are respectively and rigidly connected with the front wall 807 and the rear wall 808, the middle parts of the first side wall 801, the second side wall 802 and the third side wall 803 respectively protrude outwards, the middle part of the rear wall 808 is provided with a clamping key groove 806 which is in key joint with the pump shaft 6, the middle part of the front wall 807 is provided with a water inlet 804 communicated with the inner cavity, and the first side wall 801, the second side wall 802 and the third side wall 803 are respectively provided with a water outlet 805.

The first side wall 801, the second side wall 802 and the third side wall 803 are all open at the head end position with the water outlet 805. The first side wall 801, the second side wall 802 and the third side wall 803 are all open at the tail end position with the water outlet 805. Referring to fig. 3, arrows indicate water flowing out of the water outlet 805. There is the delivery port 805 on only one side of each top, can guarantee water yield and high lift.

The area of the water outlet 805 is less than 35% of the area of the first sidewall 801. The reasonable area of the water outlet 805 can ensure the water yield at each time, and the impeller 8 has high overall structural strength and can keep the impeller not to deform under the condition that the internal water flow is rotated and thrown out.

And a locking shaft cap is used for fixing the key joint of the impeller 8 and the pump shaft 6, so that the impeller 8 is ensured not to be loosened and the operation is stable.

In the utility model, a pair of bearing glands 3 is used for fixing the pump shaft 6 in the bearing chamber 4, a framework oil seal is arranged on the bearing glands 3, a specially-made anti-loosening shaft cap can be used for fixing the key joint of the impeller 8 and the pump shaft 6, the bearing chamber 4 and the volute 7 are fastened together by using a stud bolt, a mouth ring is arranged on one side of a suction bell-mouthed tube 9 of the pump body, and a sealing gap is formed between the mouth ring and the impeller 8. Various different materials can be selected for each part to adapt to different working condition requirements. In operation, the impeller 8 with the closed triangular arc adopts a design structure that the middle of the side part protrudes outwards, after the motor 1 is started, the impeller 8 can rotate at a high speed through the transmission of the coupler 2 and the pump shaft 6, water entering the inner cavity of the impeller 8 from the water inlet 804 is thrown out from the water outlet 805, and high lift can be realized when the water outlet 805 is positioned at the end part of the side wall and the impeller is operated at a low rotating speed and low power. When in use, the impellers 8 with different outer diameters are assembled according to the requirements of the steam turbine generator unit, and other parts can be unchanged.

The utility model greatly reduces the power required by the operation of the rubber ball pump by improving the structure of the impeller 8, greatly improves the operation stability, obtains good economic benefit, can meet the requirements of turbonator groups with various capacities below 600MW on the performance of the rubber ball pump by configuring a low-power motor with the power of 2.2-7.5KW according to different working conditions, has excellent dynamic balance performance because the impeller 8 adopts a triangular outer circular arc structure, further improves the service life of each part of the rubber ball pump and the long-time operation stability, and reduces the maintenance cost.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art may modify or modify the technical details disclosed above into equivalent embodiments with equivalent variations. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A low power glue ball pump comprising: the pump is characterized in that the motor (1) and the pump body are positioned above the base (10), an output shaft of the motor (1) is in transmission connection with a pump shaft (6) positioned in the pump body through a coupler (2), one side of the pump body, which is close to the motor (1), is provided with a bearing chamber (4), one side of the pump body, which is far away from the motor (1), is provided with a volute (7), one end of the pump shaft (6) is sleeved with a rolling bearing (5) and is connected into the bearing chamber (4) in series, the other end of the pump shaft is provided with an impeller (8), the impeller (8) is arranged in the volute (7),

the impeller (8) is a closed triangular arc impeller, an inner cavity for fluid to pass through is arranged inside the impeller (8), the impeller (8) is provided with five wall surfaces which are respectively a front wall (807), a rear wall (808), a first side wall (801), a second side wall (802) and a third side wall (803), the front wall (807) and the rear wall (808) are oppositely arranged, the first side wall (801), the second side wall (802) and the third side wall (803) are connected end to end and are respectively and rigidly connected with the front wall (807) and the rear wall (808), the middle parts of the first side wall (801), the second side wall (802) and the third side wall (803) are respectively outwards protruded, a clamping key groove (806) which is in key joint with the pump shaft (6) is arranged in the middle of the rear wall (808), and a water inlet (804) which is communicated with the inner cavity is arranged in the middle of the front wall (807), the first side wall (801), the second side wall (802) and the third side wall (803) are respectively provided with a water outlet (805).

2. A low power ball pump according to claim 1, wherein said first side wall (801), said second side wall (802) and said third side wall (803) are open at a head end position with said water outlet (805).

3. A low power ball pump according to claim 1, wherein said first side wall (801), said second side wall (802) and said third side wall (803) are open at a trailing end position with said water outlet (805).

4. A low power ball pump according to claim 1, wherein the area of the water outlet (805) is less than 35% of the area of the first side wall (801).

5. A low power ball pump according to claim 1, characterized in that a locking cap is used to fix the impeller (8) at the key joint with the pump shaft (6).