CN217926401U

CN217926401U - High-temperature-resistant centrifugal pump sealing mechanism

Info

Publication number: CN217926401U
Application number: CN202221856595.7U
Authority: CN
Inventors: 徐波; 张洋洋; 汤福明
Original assignee: Changshu Xiangyi Precision Machinery Technology Co ltd
Current assignee: Changshu Xiangyi Precision Machinery Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-29
Anticipated expiration: 2032-07-19

Abstract

The utility model relates to a mechanical seal field discloses a high temperature resistant centrifugal pump sealing mechanism, including motor, first casing and second casing, be connected through locking mechanism between first casing and the second casing, the output of motor has the impeller that is located first casing and second casing inside through the coupling joint, and one side of first casing is connected with the inlet pipe, and the upside of second casing is connected with the discharging pipe, and first casing is provided with sealing mechanism with the inboard of second casing junction, the utility model discloses in, the centrifugal pump not only can carry normal atmospheric temperature liquid and can also carry high temperature liquid to when carrying high temperature liquid, sealed effectual, easy operation, convenient to use.

Description

High-temperature-resistant centrifugal pump sealing mechanism

Technical Field

The invention relates to the field of mechanical sealing, in particular to a high-temperature-resistant centrifugal pump sealing mechanism.

Background

The centrifugal pump is a pump for conveying liquid by the centrifugal force generated when an impeller rotates, and the basic structure of the centrifugal pump consists of six parts, namely the impeller, a pump body, a pump shaft, a bearing, a sealing ring and a stuffing box. On the basis, the device also comprises a pump cover, a water retaining ring, an axial force balancing device and other parts.

When the centrifugal pump is used for conveying high-temperature liquid, the centrifugal pump is generally required to have a good sealing effect, personnel and equipment are damaged due to the fact that the high-temperature liquid is prevented from leaking, the sealing of the existing centrifugal pump is mainly achieved through a mechanical seal, the service life cycle of the mechanical seal is short, the mechanical seal needs to be replaced in 1-3 months generally, particularly when the high-temperature liquid is conveyed, the replacement time is short, the conveying process cannot be continuously carried out, the leakage problem is easily caused in the conveying process, and therefore a sealing mechanism of the high-temperature resistant centrifugal pump is required at present.

SUMMERY OF THE UTILITY MODEL

For solving the centrifugal pump when carrying high temperature liquid, appear the technical problem who leaks easily, the utility model provides a high temperature resistant centrifugal pump sealing mechanism.

The utility model discloses a following technical scheme realizes: the utility model provides a high temperature resistant centrifugal pump sealing mechanism, includes motor, first casing and second casing, be connected through locking mechanism between first casing and the second casing, there is the impeller that is located first casing and second casing inside the output of motor through the coupling joint, one side of first casing is connected with the inlet pipe, the upside of second casing is connected with the discharging pipe, the inboard of first casing and second casing junction is provided with sealing mechanism.

Through above-mentioned technical scheme, can be so that the centrifugal pump can carry normal atmospheric temperature liquid and can also carry high temperature liquid not only for the application scope of centrifugal pump is wider.

As a further improvement of the above scheme, the locking mechanism includes a first sealing plate fixedly connected to the outer side of the first housing, and further includes a second sealing plate fixedly connected to the outer side of the second housing, and a plurality of locking bolts are connected between the first sealing plate and the second sealing plate.

Through the technical scheme, the first shell and the second shell can be connected together, so that gaps between the first shell and the second shell are eliminated, and liquid leakage is prevented.

As a further improvement of the above scheme, the sealing mechanism includes a first sealing ring fixedly connected to the inner side of the first housing, and further includes a second sealing ring fixedly connected to the inner side of the second housing, the first sealing ring and the second sealing ring are mutually matched, and the inner sides of the first sealing ring and the second sealing ring are both provided with mutually matched plugging mechanisms.

Through the technical scheme, a good sealing effect can be achieved.

As a further improvement of the above scheme, the plugging mechanism includes a first compression spring fixedly connected with the bottom of the inner side of the first sealing ring, a first slider fixedly connected with one end of the first compression spring and slidably connected with the inner side of the second sealing ring, a sealing ring fixedly connected with one side of the first slider, a second slider slidably connected with the inner side of the second sealing ring, a sealing groove matched with the sealing ring is formed in one side of the second slider, and an adjusting mechanism is arranged on one side of the second slider.

Through the technical scheme, the first compression spring can press the inner side of the sealing ring on one side of the first sliding block, which is tightly inserted into the second sliding block, the second sliding block is pressed on one side of the sealing ring through the second compression spring, the sealing ring is tightly attached to the second sliding block, a gap is prevented from being formed between the sealing ring and the second sliding block, liquid flows out through the gap, leakage is caused, the conveying safety is guaranteed, through the sealing ring, high-temperature liquid can be prevented from directly flowing into the gap between the first shell and the second shell, liquid leakage is prevented, and a good sealing effect is achieved.

As a further improvement of the above scheme, the adjusting mechanism includes an adjusting bolt rotatably connected to one side of the second slider, the adjusting bolt penetrates through the second housing and is in threaded connection with the second housing, and one side of the second slider is fixedly connected to a second compression spring fixedly connected to the bottom of the inner side of the second seal ring.

Through the technical scheme, the position of the second sliding block on the inner side of the second sealing ring can be adjusted through the adjusting bolt, the compression amount of the first compression spring and the compression amount of the second compression spring can be adjusted, the pressure of the sealing ring pressed on the second sliding block can be adjusted, the sealing ring can be adjusted flexibly according to different temperatures and different liquids, and the best sealing effect of the centrifugal pump can be achieved.

As a further improvement of the above scheme, one side of the first sealing plate is provided with a triangular tooth in an outward protruding manner, and one side of the second sealing plate is provided with a triangular groove matched with the triangular tooth in an inward protruding manner.

Through above-mentioned technical scheme, can make triangle tooth and triangular groove mutually support, and then improve sealed effect.

As a further improvement of the above scheme, the first housing and the first sealing plate are of an integrally formed structure, and the second housing and the second sealing plate are of an integrally formed structure.

Through above-mentioned technical scheme, can increase the intensity and the rigidity of centrifugal pump for the life of centrifugal pump is more permanent.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. through the cooperation of first casing and second casing, just can make the sealing washer insert the interior survey of second slider, and then make the joint line between first casing and the second casing stop, reach sealed effect, prevent that the inboard high temperature liquid of first casing and second casing from leaking, causing personnel's injury.

2. Through first compression spring, can press the inseparable inboard that inserts the second slider of the sealing washer of first slider one side, press the second slider to press the one side at the sealing washer through the second compression spring, make sealing washer and second slider closely laminate, prevent to have the gap between the two, make liquid pass through the gap and flow, cause the leakage, guarantee the security of carrying, through the sealing washer, can block in the gap between the direct inflow first casing of high temperature liquid and the second casing, prevent liquid leakage, play fine sealed effect.

3. Through adjusting bolt, can adjust the second slider in the inboard position of second sealing ring, can make first pressure spring and second pressure spring's decrement adjust, and then adjust the pressure that the sealing washer pressed on the second slider, can be according to different temperatures and different liquid, adjust in a flexible way, and then make the centrifugal pump reach best sealed effect.

Drawings

Fig. 1 is a schematic front sectional view of a sealing mechanism of a high temperature resistant centrifugal pump provided in embodiment 1 of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

fig. 3 is the first sealing ring and the overall structure schematic diagram of the sealing ring of the sealing mechanism of the high-temperature resistant centrifugal pump provided in embodiment 1 or 2 of the present invention.

Description of the main symbols:

1. a motor; 2. a coupling; 3. a first housing; 4. an impeller; 5. a first sealing plate; 6. a second sealing plate; 7. locking the bolt; 8. a second housing; 9. a feed pipe; 10. a discharge pipe; 11. a drive shaft; 12. sealing sleeves; 13. a first hold-down spring; 14. a first slider; 15. a first seal ring; 16. a seal ring; 17. a second slider; 18. a second seal ring; 19. a second compression spring; 20. and adjusting the bolt.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Example 1:

referring to fig. 1-3, the sealing mechanism of the high temperature resistant centrifugal pump of this embodiment includes a motor, a first casing and a second casing, the first casing is connected to the second casing through a locking mechanism, an output end of the motor is connected to an impeller located inside the first casing and the second casing through a coupling, one side of the first casing is connected to a feeding pipe, an upper side of the second casing is connected to a discharging pipe, a sealing mechanism is disposed inside a joint of the first casing and the second casing, the sealing mechanism includes a first sealing ring fixedly connected to an inner side of the first casing, and a second sealing ring fixedly connected to an inner side of the second casing, the first sealing ring and the second sealing ring are mutually engaged, a plugging mechanism is disposed inside the first sealing ring and the second sealing ring, the plugging mechanism includes a first compression spring fixedly connected to an inner side bottom of the first sealing ring, one end of the first compression spring is fixedly connected to an inner side of the second sealing ring, one side of the first sliding block is fixedly connected to a sealing ring, an inner side of the second sealing ring is slidably connected to a second sliding block, and a side of the second sliding block is connected to a side of the second sealing ring, and a side of the adjusting mechanism is connected to a screw thread of the second sealing ring, and a screw is connected to a second sliding block, and a screw thread of the adjusting mechanism is connected to a screw of the adjusting mechanism.

The implementation principle of a high temperature resistant centrifugal pump sealing mechanism in the embodiment of the application is as follows: through the cooperation of first casing and second casing, just can make the sealing washer insert the interior survey of second slider, and then make the joint line between first casing and the second casing block, reach sealed effect, prevent the inboard high-temperature liquid leakage of first casing and second casing, cause personnel's injury, through first pressure spring, can press the inseparable inboard that inserts the second slider of sealing washer of first slider one side, press the second slider to press one side at the sealing washer through second pressure spring, make sealing washer and second slider closely laminate, prevent to have the gap between the two, make liquid flow out through the gap, cause the leakage, guarantee the security of carrying, through the sealing washer, can block that high temperature liquid directly flows in the gap between first casing and the second casing, prevent liquid leakage, play fine sealed effect.

Example 2:

with reference to fig. 1 to 3, the present embodiment is further improved on the basis of embodiment 1 in that: the locking mechanism comprises a first sealing plate fixedly connected with the outer side of the first shell and a second sealing plate fixedly connected with the outer side of the second shell, a plurality of locking bolts are connected between the first sealing plate and the second sealing plate, a triangular tooth is arranged on one side of the first sealing plate in an outward protruding mode, a triangular groove matched with the triangular tooth is formed in one side of the second sealing plate in an inward protruding mode, the first shell and the first sealing plate are of an integrally formed structure, and the second shell and the second sealing plate are of an integrally formed structure.

With reference to fig. 1, the present embodiment differs from embodiment 1 in that: through triangle tooth and triangular groove, can be so that triangle tooth and triangular groove mutually support to further improve sealed effect.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a high temperature resistant centrifugal pump sealing mechanism, its characterized in that, includes motor, first casing and second casing, be connected through locking mechanism between first casing and the second casing, the output of motor has the impeller that is located first casing and second casing inside through the coupling joint, one side of first casing is connected with the inlet pipe, the upside of second casing is connected with the discharging pipe, the inboard of first casing and second casing junction is provided with sealing mechanism.

2. The sealing mechanism of claim 1, wherein the locking mechanism comprises a first sealing plate fixedly connected to the outside of the first housing, and further comprising a second sealing plate fixedly connected to the outside of the second housing, wherein a plurality of locking bolts are connected between the first sealing plate and the second sealing plate.

3. A high temperature resistant centrifugal pump seal mechanism according to claim 1, wherein said seal mechanism comprises a first seal ring fixedly connected to the inside of the first casing, and further comprises a second seal ring fixedly connected to the inside of the second casing, said first seal ring and said second seal ring being fitted to each other, and said first seal ring and said second seal ring being provided on their insides with mutually fitted blocking means.

4. The sealing mechanism of claim 3, wherein the blocking mechanism comprises a first compression spring fixedly connected with the inner bottom of the first sealing ring, one end of the first compression spring is fixedly connected with a first sliding block slidably connected with the inner side of the second sealing ring, one side of the first sliding block is fixedly connected with the sealing ring, the inner side of the second sealing ring is slidably connected with a second sliding block, one side of the second sliding block is provided with a sealing groove matched with the sealing ring, and one side of the second sliding block is provided with an adjusting mechanism.

5. The sealing mechanism of claim 4, wherein the adjusting mechanism comprises an adjusting bolt rotatably connected to one side of the second sliding block, the adjusting bolt penetrates through the second casing and is in threaded connection with the second casing, and one side of the second sliding block is fixedly connected with a second compression spring fixedly connected with the bottom of the inner side of the second sealing ring.

6. The sealing mechanism of claim 2, wherein one side of the first sealing plate is provided with a triangular tooth protruding outwards, and one side of the second sealing plate is provided with a triangular groove matching with the triangular tooth inwards.

7. The high temperature resistant centrifugal pump seal mechanism of claim 2, wherein said first housing is of unitary construction with said first seal plate and said second housing is of unitary construction with said second seal plate.