CN218669909U - Compound mechanical seal structure of centrifugal pump - Google Patents

Abstract

The utility model discloses a double entry mechanical seal structure of centrifugal pump, including the centrifugal pump, all through bolt fixedly connected with seal cover the top and the bottom on centrifugal pump output end surface, the surface cover of seal cover is equipped with the stop collar, the sealed pad of inner wall fixedly connected with of seal cover, the inner wall of sealed pad and the surface contact of centrifugal pump output end, the driving groove has been seted up to the inside of seal cover, the inside sliding connection in driving groove has the push pedal, the outside fixedly connected with fixture block of push pedal, the outside of fixture block extends to the inside of stop collar. The utility model discloses a set up the seal cover and seal up the pad, can carry out preliminary sealing to the junction of centrifugal pump and connecting pipe, then carry on spacingly through the stop collar to the seal cover, make the inside that the fixture block inserted the stop collar through the rebounding device at last fix the stop collar, prevent that the sealing member of centrifugal pump junction from appearing coming off easily and sealed effect unsatisfactory phenomenon.

Description

Compound mechanical sealing structure of centrifugal pump

Technical Field

The utility model relates to a centrifugal pump technical field specifically is a compound mechanical seal structure of centrifugal pump.

Background

The centrifugal pump works by utilizing the rotation of an impeller to enable water to generate centrifugal motion, before the water pump is started, a pump shell and a water suction pipe are filled with water, then a motor is started, a pump shaft drives the impeller and the water to generate high-speed rotation motion, the water generates centrifugal motion and is thrown to the outer edge of the impeller, and the water flows into a water pressure pipeline of the water pump through a flow channel of a volute-shaped pump shell.

Need carry out sealed processing when carrying out the pipe connection to the delivery port of centrifugal pump, but the rubber sleeve is established through the cover to present seal structure most of times and is carried out sealedly, and the phenomenon that drops appears easily in the rubber sleeve when the centrifugal pump is in the operation to the rubber sleeve can't be effectual seals the centrifugal pump, has reduced the performance of centrifugal pump.

Therefore, the centrifugal pump needs to be improved to prevent the phenomenon that the sealing piece at the joint of the centrifugal pump is easy to fall off and the sealing effect is not ideal.

SUMMERY OF THE UTILITY MODEL

For solving the problem that provides among the above-mentioned background art, the utility model aims to provide a compound mechanical seal structure of centrifugal pump has possessed sealed effectual advantage, has solved that current seal structure is mostly established the rubber sleeve through the cover and has carried out sealedly, and the phenomenon that drops appears easily in the rubber sleeve when the centrifugal pump is functioning to the rubber sleeve can't effectually seal the centrifugal pump, has reduced the problem of centrifugal pump performance.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a compound mechanical seal structure of centrifugal pump, includes the centrifugal pump, all there is the seal cover at the top and the bottom on centrifugal pump output end surface through bolt fixedly connected with, the surface cover of seal cover is equipped with the stop collar, the sealed pad of inner wall fixedly connected with of seal cover, the sealed inner wall of filling up and the surface contact of centrifugal pump output, the driving groove has been seted up to the inside of seal cover, the inside sliding connection of driving groove has the push pedal, the outside fixedly connected with fixture block of push pedal, the outside of fixture block extends to the inside of stop collar, the inboard fixedly connected with rebounder of push pedal, the inboard fixed connection of rebounder is at the inner wall of driving groove, the spacing groove has been seted up to the inside of stop collar, the inside sliding connection of spacing groove has the movable plate, the inboard fixedly connected with movable block of movable plate, the bottom of movable block contacts with the top of fixture block, the outside fixedly connected with briquetting of movable plate, the outside of briquetting extends to the outside of driving groove.

As the utility model discloses it is preferred, the vertical fixedly connected with guide arm in inside of drive groove, the guide arm run through the push pedal and with push pedal sliding connection.

As the utility model discloses it is preferred, the chamfer has been seted up in the outside of fixture block, the chamfer uses with the fixture block cooperation.

As the utility model discloses it is preferred, the opening has been seted up in the outside of spacing groove, the open-ended width is greater than the width of briquetting, the opening uses with the briquetting cooperation.

As the utility model discloses it is preferred, the left side fixedly connected with dog of stop collar, the left side of dog extends to the inside of seal cover.

As the utility model discloses preferred, the sealing washer is all installed with the inside of stop collar to the seal cover, the sealing washer uses with seal cover and stop collar cooperation.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the seal cover and seal up the pad, can carry out preliminary sealing to the junction of centrifugal pump and connecting pipe, then carry on spacingly through the stop collar to the seal cover, make the inside that the fixture block inserted the stop collar through the rebounding device at last fix the stop collar, prevent that the sealing member of centrifugal pump junction from appearing coming off easily and sealed effect unsatisfactory phenomenon.

2. The utility model discloses a set up the guide arm, can lead to the push pedal, prevent that the phenomenon that the push pedal appears rocking when removing.

Drawings

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

FIG. 2 is an enlarged view of a partial section of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;

fig. 4 is a perspective view of a part of the present invention.

In the figure: 1. a centrifugal pump; 2. sealing sleeves; 3. a limiting sleeve; 4. a gasket; 5. a transmission groove; 6. pushing the plate; 7. a clamping block; 8. a rebounder; 9. a limiting groove; 10. moving the plate; 11. a moving block; 12. briquetting; 13. a guide bar; 14. chamfering; 15. an opening; 16. a stopper; 17. and (5) sealing rings.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the utility model provides a pair of compound mechanical seal structure of centrifugal pump, including centrifugal pump 1, the top and the bottom on centrifugal pump 1 output end surface all are through bolt fixedly connected with seal cover 2, the surface cover of seal cover 2 is equipped with stop collar 3, the sealed 4 of inner wall fixedly connected with of seal cover 2, the inner wall of sealed 4 of sealing up and the surface contact of centrifugal pump 1 output, driving groove 5 has been seted up to the inside of seal cover 2, the inside sliding connection of driving groove 5 has push pedal 6, the outside fixedly connected with fixture block 7 of push pedal 6, the outside of fixture block 7 extends to the inside of stop collar 3, the inboard fixedly connected with rebounder 8 of push pedal 6, the inboard fixed connection of rebounder 8 is at the inner wall of driving groove 5, spacing groove 9 has been seted up to the inside of stop collar 3, the inside sliding connection of spacing groove 9 has movable plate 10, the inboard fixedly connected with movable block 11 of movable plate 10, the bottom of movable block 11 contacts with the top of fixture block 7, the outside fixedly connected with briquetting 12 of movable plate 10, the outside of briquetting 12 extends to the outside of driving groove 5.

Referring to fig. 3, a guide rod 13 is vertically and fixedly connected to the inside of the transmission groove 5, and the guide rod 13 penetrates through the push plate 6 and is slidably connected with the push plate 6.

As a technical optimization scheme of the utility model, through setting up guide arm 13, can lead to push pedal 6, prevent that the phenomenon that rocks appears when removing in push pedal 6.

Referring to fig. 3, the outer side of the latch 7 is provided with a chamfer 14, and the chamfer 14 is matched with the latch 7 for use.

As a technical optimization scheme of the utility model, through setting up chamfer 14, can make 3 promotion fixture blocks 7 of stop collar, improved fixture block 7's performance.

Referring to fig. 3, an opening 15 is formed on the outer side of the limiting groove 9, the width of the opening 15 is larger than that of the pressing block 12, and the opening 15 is matched with the pressing block 12 for use.

As a technical optimization scheme of the utility model, through setting up opening 15, can make briquetting 12 complete pass stop collar 3 carry on spacingly, prevent opening 15 undersize, the dead phenomenon of card appears in briquetting 12.

Referring to fig. 2, a stopper 16 is fixedly connected to the left side of the position limiting sleeve 3, and the left side of the stopper 16 extends to the inside of the sealing sleeve 2.

As a technical optimization scheme of the utility model, through setting up dog 16, can make stop collar 3 and seal cover 2 contact inseparabler, increased stop collar 3 and seal cover 2's area of contact.

Referring to fig. 2, the sealing sleeve 2 and the limiting sleeve 3 are both provided with a sealing ring 17 inside, and the sealing ring 17 is used in cooperation with the sealing sleeve 2 and the limiting sleeve 3.

As the utility model discloses a technical optimization scheme through setting up sealing washer 17, can strengthen the sealed effect of seal cover 2 and stop collar 3, has transferred the sealing performance of seal cover 2 and stop collar 3.

The utility model discloses a theory of operation and use flow: when the sealing device is used, the two sealing sleeves 2 are fixedly arranged on the surface of the output end of the centrifugal pump 1 through bolts, after the sealing device is installed, the connecting pipe provided with the limiting sleeve 3 is inserted into the sealing sleeves 2, so that the sealing gasket 4 is pressed on the joint of the output end of the centrifugal pump 1 and the connecting pipe, the limiting sleeve 3 pushes the clamping block 7 to move inwards when moving rightwards, the clamping block 7 drives the push plate 6 to move inwards, when the limiting sleeve 3 is completely sleeved on the surface of the sealing sleeve 2, the push plate 6 is driven by the elasticity of the rebounder 8 to move outwards, the push plate 6 drives the clamping block 7 to move outwards, so that the clamping block 7 is inserted into the limiting sleeve 3 to limit the limiting sleeve 3, finally, the connecting pipe and the limiting sleeve 3 are taken down if needed, the pressing block 12 is pressed inwards, the pressing block 12 drives the moving plate 10 and the moving block 11 to push the clamping block 7 to move downwards, and the clamping block 7 can be pulled out after being away from the limiting sleeve 3, and therefore the sealing device has the advantage of being good in sealing effect.

In summary, the following steps: this compound mechanical seal structure of centrifugal pump, through the surface of bolt with two seal covers 2 fixed mounting at the 1 output of centrifugal pump, the connecting pipe that will install stop collar 3 after the installation finishes inserts the inside of seal cover 2 and makes sealed 4 compress tightly at the junction of 1 output of centrifugal pump and connecting pipe, stop collar 3 promotes fixture block 7 inwards when moving right, fixture block 7 drives push pedal 6 inwards to move, drive push pedal 6 outwards through the elasticity of rebound device 8 when the complete cover of stop collar 3 is established on the surface of seal cover 2, push pedal 6 drives fixture block 7 outwards to move, make fixture block 7 insert to the inside of stop collar 3 and carry out spacing to stop collar 3, at last if need take off connecting pipe and stop collar 3 inwards press briquetting 12, make briquetting 12 drive movable block 10 and movable block 11 promote fixture block 7 downwards to move, can extract the connecting pipe after the fixture block 7 keeps away from stop collar 3, thereby possessed the advantage that sealed effect is good, solved current seal structure and sealed through the cover and sealed through the rubber sleeve mostly, the phenomenon that the movable plate appears easily when the centrifugal pump is when the function, and the rubber sleeve can's effectual centrifugal pump of carrying out, and can's the problem of sealing performance can's reduction.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims (6)

1. A compound mechanical seal structure of a centrifugal pump comprises a centrifugal pump (1) and is characterized in that: the top and the bottom of the surface of the output end of the centrifugal pump (1) are both fixedly connected with a sealing sleeve (2) through bolts, the surface of the sealing sleeve (2) is sleeved with a limiting sleeve (3), the inner wall of the sealing sleeve (2) is fixedly connected with a sealing gasket (4), the inner wall of the sealing gasket (4) is in surface contact with the output end of the centrifugal pump (1), a transmission groove (5) is formed in the sealing sleeve (2), a push plate (6) is connected in the transmission groove (5) in a sliding mode, a clamping block (7) is fixedly connected in the outer side of the push plate (6), the outer side of the clamping block (7) extends to the inside of the limiting sleeve (3), a rebound device (8) is fixedly connected in the inner side of the push plate (6), the inner side of the rebound device (8) is fixedly connected in the inner wall of the transmission groove (5), a limiting groove (9) is formed in the limiting sleeve (3), a moving plate (10) is connected in the sliding mode, a moving plate (10) is fixedly connected in the inner side of the moving plate (10), the bottom of the moving plate (11) is in contact with the top of the clamping block (7), a pressing block (12) is fixedly connected in the outer side of the moving plate (12), and the moving block (5) extends to the outer side of the pressing block (12).

2. A compound mechanical seal structure of a centrifugal pump according to claim 1, characterized in that: the inner part of the transmission groove (5) is vertically and fixedly connected with a guide rod (13), and the guide rod (13) penetrates through the push plate (6) and is in sliding connection with the push plate (6).

3. A compound mechanical seal structure of a centrifugal pump according to claim 1, wherein: a chamfer (14) is formed in the outer side of the clamping block (7), and the chamfer (14) is matched with the clamping block (7) for use.

4. A compound mechanical seal structure of a centrifugal pump according to claim 1, wherein: an opening (15) is formed in the outer side of the limiting groove (9), the width of the opening (15) is larger than that of the pressing block (12), and the opening (15) is matched with the pressing block (12) for use.

5. A compound mechanical seal structure of a centrifugal pump according to claim 1, characterized in that: the left side fixedly connected with dog (16) of stop collar (3), the left side of dog (16) extends to the inside of seal cover (2).

6. A compound mechanical seal structure of a centrifugal pump according to claim 1, wherein: sealing washer (17) are all installed to the inside of seal cover (2) and stop collar (3), sealing washer (17) and seal cover (2) and stop collar (3) cooperation use.

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