CN214660872U

CN214660872U - Double-suction centrifugal pump with good mechanical sealing performance

Info

Publication number: CN214660872U
Application number: CN202121059033.5U
Authority: CN
Inventors: 吴邦龙; 关建花; 蔡红英; 胡倩
Original assignee: Jiangxi Dahe Pump Manufacturing Co ltd
Current assignee: Jiangxi Dahe Pump Manufacturing Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-09
Anticipated expiration: 2031-05-18

Abstract

The utility model is suitable for a double suction centrifugal pump technical field provides a double suction centrifugal pump that mechanical seal nature is good, include: the outer side of the shaft sleeve is provided with a pump body, the inner end of the pump body is provided with a shaft core, the lower side of the pump body is provided with an oil port, and the outer side of the middle part of the shaft core is provided with a double-suction sealing block; the bearing body is arranged at the outer end of the shaft core, a bearing end cover connected with the shaft core is arranged on the outer side of the bearing body, and a connecting shaft sleeve is arranged on the inner side of the bearing body; the limiting block is fixed on the outer side of the pump body, a limiting assembly is arranged inside the limiting block, and the limiting assembly consists of a limiting plate, a blocking block, a positioning disc and a connecting rod; the limiting plate is arranged inside the limiting block; and a blocking piece fixed to the inner end surface of the limiting plate. The utility model provides a pair of double entry centrifugal pump that mechanical seal nature is good reaches better leakproofness and is convenient for carry on spacingly and change sealed pad.

Description

Double-suction centrifugal pump with good mechanical sealing performance

Technical Field

The utility model belongs to the technical field of the double entry centrifugal pump, especially, relate to a double entry centrifugal pump that mechanical seal nature is good.

Background

The double-suction centrifugal pump is a high-efficiency double-suction centrifugal pump for conveying clean water or other liquid with similar physical and chemical properties to water, and the existing double-suction centrifugal pump still has defects, for example, the high-efficiency double-suction centrifugal pump provided by the Chinese patent with the publication number of CN 207333282U improves the efficiency of the high-efficiency double-suction centrifugal pump, and meanwhile, a left inlet long blade and a right inlet short blade are connected into a whole at a V-shaped outlet, and the left inlet short blade and the right inlet long blade are connected into a whole at the V-shaped outlet, so that the short blades and the long blades are reasonably changed and connected, the backflow can be reduced, the flow distribution in an impeller tends to be uniform and small to impact, mix and flow out, the flow state is improved, and the efficiency of the high-efficiency double-suction centrifugal pump is improved; therefore, the high-efficiency double-suction centrifugal pump has high efficiency.

Although the above prior art scheme can better improve the efficiency of the double-suction centrifugal pump in the using process, the following defects exist: when using the device, thereby the inside leakproofness is high enough influence the use to the centrifugal pump, and can't carry on spacingly to sealed the pad at sealed in-process, leads to sealed the pad to produce the gap to can't change sealed pad, consequently, the utility model provides a double suction centrifugal pump that mechanical seal nature is good to solve the above-mentioned problem that proposes.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double entry centrifugal pump that mechanical seal nature is good aims at solving and can't reach better leakproofness and be not convenient for carry out spacing and the problem of changing sealed pad.

The utility model discloses a realize like this, a double entry centrifugal pump that mechanical seal nature is good, include:

the outer side of the shaft sleeve is provided with a pump body, the inner end of the pump body is provided with a shaft core, the lower side of the pump body is provided with an oil port, and the outer side of the middle part of the shaft core is provided with a double-suction sealing block;

the bearing body is arranged at the outer end of the shaft core, a bearing end cover connected with the shaft core is arranged on the outer side of the bearing body, and a connecting shaft sleeve is arranged on the inner side of the bearing body;

the limiting block is fixed on the outer side of the pump body, a limiting assembly is arranged inside the limiting block, and the mounting assembly is mounted on the inner side of the limiting assembly.

Adopt above-mentioned technical scheme, fix the device through the bearing body when using the device, will seal inside through the pump body and double suction seal piece again, and the outer end of the pump body is provided with the installation component to reach better sealed effect when sealed.

As the preferred technical proposal of the utility model, the limiting component consists of a limiting plate, a stop block, a positioning disc and a connecting rod;

the limiting plate is arranged inside the limiting block;

a stop block fixed on the inner end surface of the limiting plate;

a positioning plate fixed to the front end of the limiting plate;

and the connecting rod is arranged at the right end of the positioning disk and connected with the limiting block.

Adopt above-mentioned technical scheme, laminate through limiting plate and linking piece to carry out spacingly with the connecting sleeve, use more nimble.

As the preferred technical scheme of the utility model, the limiting plate and the limiting block rotate relatively and are arranged, and the positioning disc at the front end of the limiting plate is meshed with the connecting rod.

Adopt above-mentioned technical scheme, through rotating the connecting rod, when the connecting rod rotates, the positioning disk rotates to make the limiting plate rotate in the inside of stopper, will seal up to fill up and carry on spacingly, prevent that sealed pad from taking place the inside result of use of displacement influence.

As the preferred technical proposal of the utility model, the mounting component consists of a sealing gasket and a linking block;

a seal gasket clamped on the outer side of the connecting shaft sleeve;

and the joint block is fixedly arranged on the upper surface of the sealing gasket.

Adopt above-mentioned technical scheme, with sealed the laminating of filling up at the outer terminal surface of connecting sleeve to can be inseparabler with the port department connection of connecting sleeve and the pump body, prevent to seal the condition that produces the gap.

As the utility model discloses a preferred technical scheme, join in marriage the piece and block that the piece block sets up and reach the spacing effect to sealed the pad, and the longitudinal section of sealed pad is for having the arcuation structure of leakproofness.

By adopting the technical scheme, the connecting block is clamped with the blocking block, when the limiting plate is separated, the arc-shaped structure at the outer end of the blocking block is separated from the connecting block, and the use is more flexible.

As the preferred technical proposal of the utility model, the longitudinal section of the limiting plate is L-shaped, and the stop block at the inner end of the limiting plate is convex.

By adopting the technical scheme, the limiting plate and the connecting block are in contact parallel arrangement due to the L-shaped structure of the limiting plate, so that the stability of attaching limitation is improved.

Compared with the prior art, the beneficial effects of the utility model are that: the double-suction centrifugal pump with good mechanical sealing performance provided by the utility model achieves better sealing performance and is convenient for limiting and replacing the sealing gasket;

1. the positioning disc at the front end of the limiting plate is meshed with the connecting rod, the connecting rod is rotated, when the connecting rod rotates, the positioning disc rotates, and the limiting plate and the limiting block are arranged in a relative rotating mode, so that the sealing gasket is limited, and the sealing gasket is prevented from being displaced to influence the use effect of the interior;

2. the longitudinal section of the sealing gasket is of an arc-shaped structure with sealing performance, and the sealing gasket is attached to the outer end face of the connecting shaft sleeve, so that the connecting shaft sleeve can be connected with the port of the pump body more tightly, and a gap is prevented from being generated in sealing;

3. reach sealed spacing effect of pad through linking up the piece and blocking the piece block setting, when needing to change sealed pad, will block the piece and break away from with linking up the piece, and block the piece and be protruding form to it is more convenient to make the operation.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the overlooking cross-section structure of the connection between the limiting block and the limiting component of the present invention;

FIG. 4 is a schematic view of the connection structure of the stop block and the mounting assembly of the present invention;

in the figure: the pump comprises a shaft sleeve 1, a pump body 2, a shaft core 3, an oil port 4, a connecting shaft sleeve 5, a bearing body 6, a bearing end cover 7, a limiting block 8, a double-suction sealing block 9, a limiting component 10, a limiting plate 1001, a limiting block 1002, a positioning disc 1003, a connecting rod 1004, a mounting component 11, a sealing gasket 1101 and a connecting block 1102.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, the utility model provides a double suction centrifugal pump technical scheme that mechanical seal nature is good: the outer side of the shaft sleeve 1 is provided with a pump body 2, the inner end of the pump body 2 is provided with a shaft core 3, the lower side of the pump body 2 is provided with an oil port 4, and the outer side of the middle part of the shaft core 3 is provided with a double-suction sealing block 9; bearing body 6 its outer end of installing at axle core 3, fix the device through bearing body 6 when using the device, will seal inside through the pump body 2 and double suction seal block 9 again, and the outer end of the pump body 2 is provided with installation component 11, thereby reach better sealed effect when sealed, and the outside of bearing body 6 is provided with bearing end cover 7 of being connected with axle core 3, and the inboard of bearing body 6 is provided with connecting axle sleeve 5, seal inside through connecting axle sleeve 5.

As shown in fig. 1 and 2, the limiting plate 1001 is mounted inside the limiting block 8, and the blocking block 1002 is fixed on the inner end surface of the limiting plate 1001; laminate with linking piece 1102 through limiting plate 1001, positioning disk 1003 is its front end of fixing at limiting plate 1001, and connecting rod 1004 is its right-hand member that sets up at positioning disk 1003 and is connected with stopper 8, and limiting plate 1003 and the connecting rod 1004 intermeshing of limiting plate 1001 front end are connected, when connecting rod 1004 rotates, positioning disk 1003 rotates, limiting plate 1001 rotates the setting with stopper 8 relatively, thereby make limiting plate 1001 rotate in stopper 8's inside, will spacing sealed 1101, prevent sealed 1101 from taking place the inside result of use of displacement influence.

Specifically, as shown in fig. 4, the sealing gasket 1101 is clamped outside the connecting shaft sleeve 5, the engaging block 1102 is fixedly arranged on the upper surface of the sealing gasket 1101, the engaging block 1102 is clamped with the blocking block 1002 to limit the sealing gasket 1101, the longitudinal section of the limiting plate 1001 is in an "L" shape, the longitudinal section of the sealing gasket 1101 is in an arc-shaped structure with sealing performance, and the sealing gasket 1101 is attached to the outer end surface of the connecting shaft sleeve 5, so that the connecting shaft sleeve 5 can be connected with the port of the pump body 2 more tightly, a gap is prevented from being generated in sealing, the blocking block 1002 at the inner end of the limiting plate 1001 is in a convex shape, when the sealing gasket 1101 needs to be replaced, the blocking block 1002 is separated from the engaging block 1102, the operation is more convenient, and the use method of the double suction centrifugal pump with good mechanical sealing performance is provided.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a double entry centrifugal pump that mechanical seal nature is good which characterized in that includes:

the pump comprises a shaft sleeve (1), wherein a pump body (2) is arranged on the outer side of the shaft sleeve, a shaft core (3) is installed at the inner end of the pump body (2), an oil port (4) is formed in the lower side of the pump body (2), and a double-suction sealing block (9) is arranged on the outer side of the middle of the shaft core (3);

the bearing body (6) is arranged at the outer end of the shaft core (3), a bearing end cover (7) connected with the shaft core (3) is arranged on the outer side of the bearing body (6), and a connecting shaft sleeve (5) is arranged on the inner side of the bearing body (6);

the limiting block (8) is fixed on the outer side of the pump body (2), a limiting component (10) is arranged inside the limiting block (8), and a mounting component (11) is mounted on the inner side of the limiting component (10).

2. The double suction centrifugal pump with good mechanical sealing performance as set forth in claim 1, wherein: the limiting assembly (10) is composed of a limiting plate (1001), a blocking block (1002), a positioning disc (1003) and a connecting rod (1004);

a limiting plate (1001) installed inside the limiting block (8);

a stopper (1002) fixed to an inner end surface of the limiting plate (1001);

a positioning plate (1003) fixed to the front end of the limiting plate (1001);

and the connecting rod (1004) is arranged at the right end of the positioning disk (1003) and is connected with the limiting block (8).

3. The double suction centrifugal pump with good mechanical sealing performance as set forth in claim 2, wherein: the limiting plate (1001) and the limiting block (8) are arranged in a relatively rotating mode, and the positioning disc (1003) at the front end of the limiting plate (1001) is connected with the connecting rod (1004) in an engaged mode.

4. The double suction centrifugal pump with good mechanical sealing performance as set forth in claim 1, wherein: the mounting assembly (11) is composed of a sealing gasket (1101) and a connecting block (1102);

a gasket (1101) that is engaged with the outside of the coupling sleeve (5);

and a joint block (1102) fixedly arranged on the upper surface of the gasket (1101).

5. The double suction centrifugal pump with good mechanical sealing performance as set forth in claim 4, wherein: the connecting block (1102) and the blocking block (1002) are clamped to limit the sealing gasket (1101), and the longitudinal section of the sealing gasket (1101) is of an arc-shaped structure with sealing performance.

6. The double suction centrifugal pump with good mechanical sealing performance as set forth in claim 2, wherein: the longitudinal section of the limiting plate (1001) is L-shaped, and a stop block (1002) at the inner end of the limiting plate (1001) is convex.