CN212867928U

CN212867928U - JLGS type high-lift double-suction middle-opening centrifugal pump

Info

Publication number: CN212867928U
Application number: CN202021470915.6U
Authority: CN
Inventors: 叶星红
Original assignee: Jiangsu Julang Pumps And Valves Co ltd
Current assignee: Jiangsu Julang Pumps And Valves Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-02
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses a JLGS type high-lift double suction middle-open centrifugal pump relates to middle-open centrifugal pump technical field, including the pump body, pump cover, pivot body and two bearing bodies, fastener and pump cover fixed connection are passed through at the top of the pump body, the junction middle part of the pump body and pump cover is provided with the pivot body, the both ends of pivot body all are provided with the bearing body, the pivot body includes a pivot, a key, an impeller, two double suction sealing rings, two axle sleeves, two machine sealings, two machine seal glands and two axle sleeve end covers, the pivot runs through the center department of the pump body and pump cover junction and extends to the left and right sides of bearing body, the center department of pivot is opened there is the keyway, there is the impeller through the key joint in the keyway, the impeller has double suction sealing ring with the clearance department fixed mounting of the pump body and pump cover. The utility model discloses conveniently overhaul, change the part, operate steadily, longe-lived.

Description

JLGS type high-lift double-suction middle-opening centrifugal pump

Technical Field

The utility model relates to a well centrifugal pump technical field specifically is a JLGS type high-lift double suction well centrifugal pump.

Background

The pump is a mechanical tool which converts mechanical energy or other energy such as electric energy into liquid potential energy, and then the liquid potential energy is expressed in the form of kinetic energy, so that the purpose of conveying liquid is achieved, and the double-suction centrifugal pump is widely used for conveying clean water or media similar to the clean water. In the prior art, a suction inlet and a discharge outlet of the double-suction middle-opening centrifugal pump are positioned on the same central line, media are horizontally sucked and discharged, a motor can be arranged on the left side or the right side of the pump as required, the motor is large in size, the supporting distance between two ends of a bearing is long, the service life is too short, and the motor is inconvenient to maintain when damaged, so that the motor needs to be optimally designed to achieve the purposes of improving benefits and saving cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a JLGS type high-lift double-suction middle-open centrifugal pump has solved the problem of the short and inconvenient maintenance of current double-suction middle-open centrifugal pump life who provides among the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a JLGS type high-lift double-suction middle-opening centrifugal pump comprises a pump body, a pump cover, a rotating shaft body and two bearing bodies, wherein the top of the pump body is fixedly connected with the pump cover through a fastener, the middle part of the joint of the pump body and the pump cover is provided with the rotating shaft body, two ends of the rotating shaft body are respectively provided with the bearing bodies, the rotating shaft body comprises a rotating shaft, a key, an impeller, two double-suction sealing rings, two shaft sleeves, two mechanical seals, two mechanical seal pressing covers and two shaft sleeve end covers, the rotating shaft penetrates through the center of the joint of the pump body and the pump cover and extends to the left side and the right side of the bearing body, the center of the rotating shaft is provided with a key groove, the impeller is clamped in the key groove, the double-suction sealing rings are fixedly arranged at the gap between the impeller and the pump body and the pump cover, the shaft sleeves are rotatably connected with the rotating shaft, the mechanical seal pressing cover compresses the mechanical seal at the joint of the pump body, the pump cover and the shaft sleeve through a fastener, the shaft sleeve end cover is in threaded connection with the rotating shaft and presses the shaft sleeve into a gap between the pump body, the pump cover and the rotating shaft, the bearing body comprises a bearing end cover, a bearing body end cover and a bearing, the bearing body is respectively connected at two ends of the rotating shaft in a rotating mode through the bearing in a rotating mode, the bearing is close to one side fixedly connected with bearing end cover at the center of the rotating shaft, the bearing is close to the other side fixedly connected with bearing body end cover at the center of the rotating shaft, and the right end of the rotating shaft penetrates through the bearing body on the right side.

Furthermore, two symmetrical air pipes are installed on the outer surface of the pump cover, one end of each air pipe is connected with the head of the pump cover, and the other end of each air pipe is communicated with the lower portion of the pump cover close to the mechanical seal.

Further, the bottom fixedly connected with base of the pump body, the screw hole has been seted up to the bottom of base, delivery port and water inlet have been seted up respectively to the front and the back of the pump body, and delivery port and water inlet communicate to the pump body and in the cavity that the impeller formed.

Furthermore, a gap of 5-10mm is reserved between the impeller and the double-suction sealing ring, the inner ring of the double-suction sealing ring is fixedly connected with the shaft sleeve, and the outer ring of the double-suction sealing ring is clamped in the pump body and the pump cover.

Furthermore, the two double-suction sealing rings, the two shaft sleeves, the two mechanical seals, the two mechanical seal pressing covers and the two shaft sleeve end covers are symmetrically arranged relative to the impeller.

Further, the two bearing bodies are symmetrically arranged relative to the impeller, and the bearing bodies are not in contact with the pump cover.

Further, the coupling part is connected with an external motor.

(III) advantageous effects

The utility model provides a JLGS type high-lift double-suction middle-opening centrifugal pump possesses following beneficial effect:

(1) the JLGS type high-lift double-suction middle-open centrifugal pump is supported by two single-row radial ball bearings through a rotating shaft, the bearings are arranged in bearing bodies at two ends of a pump body and are lubricated by grease, the shaft diameter and the bearings are increased, the shaft and the bearings are more reliable, the operation is more stable, and the service life is long.

(2) The JLGS type high-lift double-suction split centrifugal pump is divided into a pump body and a pump cover by horizontally splitting a pump case, a water inlet and a water outlet of the pump are both arranged on the pump body below the axial lead of a water pump and are in a horizontal direction perpendicular to the axial lead, and when the pump is overhauled, water inlet and outlet pipelines and a motor do not need to be disassembled, and parts can be conveniently overhauled and replaced only by uncovering the pump cover.

Drawings

Fig. 1 is a schematic front structural view of a JLGS type high-lift double-suction centrifugal pump of the present invention;

fig. 2 is the a structure schematic diagram in fig. 1 of the JLGS type high-lift double-suction middle-opening centrifugal pump of the present invention.

In the figure: 1. a pump body; 2. a pump cover; 3. a rotating shaft body; 4. a bearing body; 5. a rotating shaft; 6. a key; 7. an impeller; 8. a double suction seal ring; 9. a shaft sleeve; 10. machine sealing; 11. a mechanical seal gland; 12. a shaft sleeve end cover; 13. A bearing end cap; 14. a bearing body end cap; 15. a bearing; 16. a coupling component; 17. the trachea.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution:

a JLGS type high-lift double-suction middle-open centrifugal pump comprises a pump body 1, a pump cover 2, a rotating shaft body 3 and two bearing bodies 4, wherein the two bearing bodies 4 are symmetrically arranged about an impeller 7, the bearing bodies 4 are not contacted with the pump cover 2, the bottom of the pump body 1 is fixedly connected with a base, the bottom of the base is provided with screw holes, the front surface and the back surface of the pump body 1 are respectively provided with a water outlet and a water inlet, the water outlet and the water inlet are communicated into a cavity formed by the pump body 1 and the impeller 7, the pump body 1 and the pump cover 2 are horizontally divided by horizontally opening a pump shell, the water inlet and the water outlet of the pump are arranged on the pump body 1 below a water pump axial lead and are in a horizontal direction vertical to the axial line, when in maintenance, the water inlet and outlet pipelines and a motor do not need to be detached, only the pump cover 2 needs to be opened, maintenance and parts can be conveniently replaced, one end of an air pipe 17 is connected with the head part of a pump cover 2, the other end of the air pipe 17 is communicated with the lower part of the pump cover 2 close to a mechanical seal 10, a rotating shaft body 3 is arranged in the middle of the joint of the pump body 1 and the pump cover 2, bearing bodies 4 are arranged at two ends of the rotating shaft body 3, the rotating shaft body 3 comprises a rotating shaft 5, a key 6, an impeller 7, two double-suction sealing rings 8, two shaft sleeves 9, two mechanical seal pressing covers 11 and two shaft sleeve end covers 12, the two double-suction sealing rings 8, the two shaft sleeves 9, the two mechanical seal pressing covers 10, the two mechanical seal pressing covers 11 and the two shaft sleeve end covers 12 are symmetrically arranged relative to the impeller 7, the rotating shaft 5 penetrates through the center of the joint of the pump body 1 and the pump cover 2 and extends to the left side and the right side of the bearing body 4, a key groove is formed in the center of the rotating shaft 5, the impeller 7 is clamped with the, a gap of 5-10mm is reserved between the impeller 7 and the double-suction sealing ring 8, two sides of the impeller 7 are positioned on the rotating shaft 5 and are rotatably connected with the rotating shaft 5 through a shaft sleeve 9, an inner ring of the double-suction sealing ring 8 is fixedly connected with the shaft sleeve 9, an outer ring of the double-suction sealing ring 8 is clamped inside the pump body 1 and the pump cover 2, a mechanical seal 10 is fixedly arranged outside the shaft sleeve 9 far away from the impeller 7, the mechanical seal 10 is tightly pressed on the connecting part of the pump body 1 and the pump cover 2 and the shaft sleeve 9 through a fastening piece by a mechanical seal pressing cover 11, the shaft sleeve end cover 12 is in threaded connection with the rotating shaft 5 and presses the shaft sleeve 9 into a gap between the pump body 1 and the pump cover 2 and the rotating shaft 5, the bearing body 4 comprises a bearing end cover 13, a bearing body end cover 14 and a bearing 15, the two bearing bodies 4 are respectively rotatably connected at two ends, bearing 15 dress is in the bearing body 4 at 1 both ends of the pump body, with grease lubrication, the diameter of a shaft, bearing 15 increases, pivot 5, bearing 15 is more reliable, it is more steady to operate, long-lived, bearing 15 is close to one side fixedly connected with bearing end cover 13 of 5 center departments of pivot, bearing 15 is close to opposite side fixedly connected with bearing body end cover 14 of 5 center departments of pivot, the bearing body 4 and the fixed connection on shaft coupling part 16 on impeller 7 right side are run through to the right-hand member of pivot 5, shaft coupling part 16 connects outside motor.

The working principle is that when the JLGS type high-lift double-suction middle-open centrifugal pump is used, the JLGS type high-lift double-suction middle-open centrifugal pump is fixedly installed at a use place through a screw hole on a base, then an external motor is connected through a coupling part 16, a water inlet and a water outlet which are positioned at the front side and the rear side of a pump body 1 are connected, then the motor is opened, the motor drives a rotating shaft 5 to rotate through driving the coupling part 16, because the rotating shaft 5 is connected with an impeller 7 which is clamped through a key 6, the rotating shaft 5 can drive the impeller 7 to rotate clockwise, when the impeller 7 rotates clockwise, suction is applied to the water inlet, so that liquid in the water inlet flows into the pump body 1 and the pump cover 2, then the liquid is driven to rotate around the rotating shaft 5 through the rotation of the impeller 7, under the action of centrifugal force, the liquid is conveyed to the water outlet, when the JLGS type high-lift double-suction middle-opening centrifugal pump breaks down, all parts except the bearing body 4 can be detached only by opening the pump cover 2, the parts are directly maintained, and the maintenance process is convenient and fast.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A JLGS type high-lift double-suction middle-opening centrifugal pump comprises a pump body (1), a pump cover (2), a rotating shaft body (3) and two bearing bodies (4), and is characterized in that the top of the pump body (1) is fixedly connected with the pump cover (2) through a fastener, the rotating shaft body (3) is arranged in the middle of the joint of the pump body (1) and the pump cover (2), the bearing bodies (4) are arranged at two ends of the rotating shaft body (3), the rotating shaft body (3) comprises a rotating shaft (5), a key (6), an impeller (7), two double-suction sealing rings (8), two shaft sleeves (9), two mechanical seals (10), two mechanical seal pressing covers (11) and two shaft sleeve end covers (12), the rotating shaft (5) penetrates through the center of the joint of the pump body (1) and the pump cover (2) and extends to the left side and the right side of the bearing body (4), and a key groove is formed in the center of the rotating shaft, an impeller (7) is clamped in the key groove through a key (6), a double-suction sealing ring (8) is fixedly arranged at a gap between the impeller (7) and the pump body (1) and the pump cover (2), shaft sleeves (9) are rotatably connected with the rotating shaft (5) and positioned on the rotating shaft (5) at two sides of the impeller (7), a mechanical seal (10) is fixedly arranged outside the shaft sleeves (9) far away from the impeller (7), the mechanical seal (10) is tightly pressed at the joint of the pump body (1) and the pump cover (2) and the shaft sleeves (9) by a mechanical seal pressing cover (11) through a fastener, the shaft sleeve end cover (12) is in threaded connection with the rotating shaft (5) and presses the shaft sleeve (9) into a gap between the pump body (1) and the pump cover (2) and the rotating shaft (5), and the bearing body (4) comprises a bearing end cover (13), a bearing body end cover (14) and a bearing (15), the two bearing bodies (4) are respectively and rotatably connected to two ends of the rotating shaft (5) through bearings (15), one side, close to the center of the rotating shaft (5), of each bearing (15) is fixedly connected with a bearing end cover (13), the other side, close to the center of the rotating shaft (5), of each bearing (15) is fixedly connected with a bearing body end cover (14), and the right end of the rotating shaft (5) penetrates through the bearing body (4) on the right side of the impeller (7) and is fixedly connected to the coupling part (16); the bearing (15) is a single-row radial ball bearing; the water inlet and the water outlet of the pump are both arranged on the pump body (1) below the axial line of the water pump and are vertical to the axial line and in the horizontal direction.

2. The JLGS type high-lift double-suction middle-open centrifugal pump according to claim 1, characterized in that,

the outer surface of the pump cover (2) is provided with two symmetrical air pipes (17), one end of each air pipe (17) is connected with the head of the pump cover (2), and the other end of each air pipe (17) is communicated with the lower part of the pump cover (2) close to the mechanical seal (10).

3. The JLGS type high-lift double-suction middle-open centrifugal pump according to claim 1, characterized in that,

the bottom fixedly connected with base of the pump body (1), the screw hole has been seted up to the bottom of base, delivery port and water inlet have been seted up respectively to the front and the back of the pump body (1), and delivery port and water inlet communicate to the pump body (1) and the cavity that impeller (7) formed in.

4. The JLGS type high-lift double-suction middle-open centrifugal pump according to claim 1, characterized in that,

a gap of 5-10mm is reserved between the impeller (7) and the double-suction sealing ring (8), the inner ring of the double-suction sealing ring (8) is fixedly connected with the shaft sleeve (9), and the outer ring of the double-suction sealing ring (8) is clamped inside the pump body (1) and the pump cover (2).

5. The JLGS type high-lift double-suction middle-open centrifugal pump according to claim 1, characterized in that,

the two double-suction sealing rings (8), the two shaft sleeves (9), the two mechanical seals (10), the two mechanical seal pressing covers (11) and the two shaft sleeve end covers (12) are symmetrically arranged relative to the impeller (7).

6. The JLGS type high-lift double-suction middle-open centrifugal pump according to claim 1, characterized in that,

the two bearing bodies (4) are symmetrically arranged relative to the impeller (7), and the bearing bodies (4) are not in contact with the pump cover (2).

7. The JLGS type high-lift double-suction middle-open centrifugal pump according to claim 1, characterized in that,

the coupling component (16) is connected with an external motor.