CN212717352U - Double suction pump mechanical seal structure and double suction pump - Google Patents

Abstract

The utility model discloses a two suction pump mechanical seal structure and two suction pump, two suction pump mechanical seal structure include axle sleeve, rotating ring, quiet ring and gland, quiet ring circumference is fixed in the gland, still include the retaining member, be equipped with the holding ring on the axle sleeve, the rotating ring the gland the retaining member is established in proper order the cover is established one side of holding ring, the retaining member is fixed on the axle sleeve, with the holding ring cooperation, be used for with the rotating ring with the gland is fixed on the axle sleeve. Double suction pump mechanical seal structure, in inside part damage cause sealed bad back, only need to dismantle the retaining member of axle sleeve one end from the axle sleeve, can inspect, maintain, change mechanical seal structure's internal part, its simple structure, easy dismounting, with low costs.

Description

Double suction pump mechanical seal structure and double suction pump

Technical Field

The utility model belongs to the mechanical seal field, specifically speaking relates to a double suction pump mechanical seal structure and double suction pump.

Background

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft penetrates inside and outside the apparatus, so that there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks outwards, and if the pressure in the apparatus is below atmospheric pressure, air leaks into the apparatus, it is necessary to provide a shaft seal arrangement to prevent leakage. The shaft seals are of various types, and the mechanical seal has the advantages of small leakage amount, long service life and the like.

The two ends of the double-suction water pump are mechanical sealing structures, the existing sealing rings are graphite, silicon carbide or alloy steel and the like, and the dynamic ring and the static ring are both worn. The mechanical seal base is fixed on the shaft sleeve, the static ring is fixed in the gland, the dynamic ring is sleeved between the mechanical seal base and the gland, the gland is matched with the mechanical seal base and fixed on the shaft sleeve, and the mechanical seal base and the dynamic ring are installed inside the pump shell. When the sealing ring is worn or the spring is damaged, the pump shell needs to be disassembled to disassemble the mechanical sealing mechanism, so that the maintenance workload is large and the cost is high.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a can follow the outside double entry pump mechanical seal structure who carries out the dismouting maintenance of pump case.

Another object of the utility model is to provide a mechanical seal locking result sets up outside the pump case, makes things convenient for dismouting maintenance mechanical seal structure's double entry pump.

In order to solve the technical problem, the utility model adopts the following basic concept: the utility model provides a double suction pump mechanical seal structure, includes axle sleeve, rotating ring, quiet ring sum gland, quiet ring circumference is fixed in the gland, still include the retaining member, be equipped with the holding ring on the axle sleeve, the rotating ring the gland the retaining member is established in proper order the cover is established one side of holding ring, the retaining member is fixed on the axle sleeve, with the holding ring cooperation, be used for with the rotating ring with the gland is fixed on the axle sleeve.

Double suction pump mechanical seal structure, in inside part damage cause sealed bad back, only need to dismantle the retaining member of axle sleeve one end from the axle sleeve, can dismantle the gland from the pump case, need not to disintegrate the pump case, can inspect, maintain, change mechanical seal structure's internal part, its simple structure, easy dismounting, with low costs.

Further, the locking piece comprises a locking ring and a first fixing piece, a shaft sleeve hole is formed in the peripheral wall of the shaft sleeve, a first fixing hole is formed in the peripheral wall of the locking ring in the radial direction and communicated with the shaft sleeve hole, and the first fixing piece penetrates through the first fixing hole and is installed in the shaft sleeve hole.

Furthermore, the shaft sleeve hole is arranged along the circumferential direction of the shaft sleeve at intervals, and the first fixing hole is matched with the shaft sleeve hole.

Further, the first fixing piece is in threaded connection with the first fixing hole and the shaft sleeve hole.

Further, the locking member further comprises a second fixing member, the side wall of the locking ring is provided with a second fixing hole arranged along the axial direction, and the second fixing member is installed in the second fixing hole.

Further, the mechanical sealing mechanism further comprises a positioning block, and the positioning block is abutted between the gland and the side wall of the locking ring during assembly to determine the installation position of the locking piece on the shaft sleeve.

The utility model discloses a set up the locating piece, can pass through the locating piece will the rotating ring the tight degree of support of quiet ring in the gland.

Furthermore, the device also comprises a spring seat sleeved on the shaft sleeve, one end of the spring seat is connected with the positioning ring, and the other end of the spring seat is connected with the moving ring.

Furthermore, a clamping groove is formed in the peripheral wall of the positioning ring, a clamping jaw is arranged on one side of the spring seat, and the clamping jaw is clamped in the clamping groove.

Furthermore, the movable ring is a movable ring with the surface subjected to anti-wear nitriding treatment, and the static ring is a high-wear-resistance sealing strip.

The utility model discloses still provide one kind and have above-mentioned arbitrary mechanical seal structure's double entry pump, including the pump case, the rotating ring is installed inside the pump case, the gland with the retaining member is installed the pump case is outside.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has.

(1) Double suction pump mechanical seal structure, in inside part damage cause sealed bad back, only need to dismantle the retaining member of axle sleeve one end from the axle sleeve, can dismantle the gland from the pump case, need not to disintegrate the pump case, can inspect, maintain, change mechanical seal structure's internal part, its simple structure, easy dismounting, with low costs.

(2) The utility model discloses a set up the locating piece, can pass through the locating piece will the rotating ring the tight degree of support of quiet ring in the gland.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of the mechanical seal structure of the present invention;

fig. 2 is a cross-sectional view of fig. 1 according to the present invention.

In the figure: 1. a shaft sleeve; 11. a positioning ring; 12. a card slot; 13. a shaft sleeve hole; 14. a shaft end sealing ring; 2. a spring seat; 21. a claw; 3. a moving ring; 31. a moving ring sealing ring; 4. a stationary ring; 41. a stationary ring seal ring; 5. a gland; 6. a locking member; 61. locking a ring; 611. a first fixing hole; 612. a second fixing hole; 62. a first fixing member; 63. a second fixing member; 64. positioning blocks; 7. a machine seal base; 71. mounting holes; 72. and a third fixing member.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, double entry pump mechanical seal structure, including axle sleeve 1, rotating ring 3, quiet ring 4 and gland 5, 4 circumference of quiet ring are fixed in the gland 5, still include retaining member 6, be equipped with holding ring 11 on the axle sleeve 1, the rotating ring 3 the gland 5 retaining member 6 overlaps in proper order and establishes one side of holding ring 11, retaining member 6 is fixed on the axle sleeve 1, with the cooperation of holding ring 11, be used for with the rotating ring 3 with the gland 5 is fixed on the axle sleeve 1.

The double suction pump includes a pump body, a pump shaft, and a pump case (not shown in the drawings). The shaft sleeve 1 can be sleeved on a pump shaft of the double suction pump, and the gland 5 is fixed on the outer part of a pump shell. The positioning ring 11 is an annular boss protruding from the peripheral wall of the shaft sleeve 1 and can limit the moving ring 3. Preferably, the retaining ring 11 is arranged on the end of the sleeve 1.

When mechanical seal structure installs, will quiet ring 4 fixed mounting earlier the inside of gland 5 is established rotating ring 3, gland 5, retaining member 6 in proper order the cover is established on the axle sleeve 1 of one side of holding ring 11, will retaining member 6 is fixed on the axle sleeve 1, make rotating ring 3 support tightly with gland 5, the rotating ring 3 contacts with quiet ring 4 in the gland 5. When mechanical seal structure dismantles, only need to dismantle retaining member 6 with axle sleeve 1 one end, can dismantle gland 5 from the pump case, need not to disintegrate the pump case, can conveniently inspect, maintain and change mechanical seal structure inside part, for example rotating ring 3, quiet ring 4.

Double suction pump mechanical seal structure, in inside part damage cause sealed bad back, only need to dismantle retaining member 6 of 1 one end of axle sleeve from axle sleeve 1 gets off, can dismantle gland 5 from the pump case get off, need not to disintegrate the pump case, can inspect, maintain, change mechanical seal structure's internal part, its simple structure, easy dismounting, with low costs.

Further, the locking member 6 includes a locking ring 61 and a first fixing member 62, the sleeve 1 is provided with a sleeve hole 13 on a peripheral wall thereof, the locking ring 61 is provided with a first fixing hole 611 arranged in a radial direction on a peripheral wall thereof, the first fixing hole 611 communicates with the sleeve hole 13, and the first fixing member 62 is installed in the sleeve hole 13 through the first fixing hole 611.

The first fixing hole 611 penetrates the circumferential wall of the locking ring 61, and the sleeve hole 13 penetrates the circumferential wall of the sleeve 1. When the mechanical sealing structure is mounted on a pump body, the shaft sleeve 1 is sleeved on a pump shaft, and the first fixing piece 62 penetrates through the first fixing hole 611 and the shaft sleeve hole 13 to be connected with the pump shaft.

The shaft sleeve holes 13 are arranged at intervals along the circumferential direction of the shaft sleeve 1, and the first fixing holes 611 are matched with the shaft sleeve holes 13. The first fixing member 62 is screwed with the first fixing hole 611 and the boss hole 13.

When the double suction pump is mounted, the first fixing members 62 are respectively screwed into the first fixing holes 611 and the boss holes 13, so that the plurality of first fixing members 62 are abutted against the pump shaft in the circumferential direction of the shaft, and the mechanical seal structure is mounted on the pump shaft. Preferably, the first fixing member 62 is a bolt.

The locking member 6 further includes a second fixing member 63, and the side wall of the locking ring 61 has a second fixing hole 612 arranged in the axial direction, and the second fixing member 63 is installed in the second fixing hole 612.

Preferably, the second fixing member 63 is screwed to the second fixing hole 612, and the second fixing member 63 is a bolt. One end of the stud of the bolt faces the gland 5, and one end of the nut of the bolt faces away from the gland 5.

A plurality of second fixing holes 612 are formed in the sidewall of the locking ring 61 at intervals along the circumferential direction, and the second fixing members 63 are matched with the second fixing holes 612, specifically, the number, the shape and the size thereof are matched.

The mechanical sealing structure further comprises a positioning block 64, and the positioning block 64 is abutted between the gland 5 and the side wall of the locking ring 61 when being assembled to determine the installation position of the locking piece 6 on the shaft sleeve 1. After the assembly is completed, the positioning block 64 may be tilted out from between the gland 5 and the sidewall of the locking ring 61.

When the locking member 6 is installed, firstly, the locking ring 61 is sleeved on the shaft sleeve 1, the positioning block 64 is abutted between the gland 5 and the locking ring 61, and then the shaft sleeve 1 is fixed on the pump shaft by the first fixing member 62 penetrating through the first fixing hole 611 and the shaft sleeve hole 13.

The utility model discloses set up locating piece 64 can be adjusted more conveniently through locating piece 64 the rotating ring 3 with tight degree of support between 4 quiet rings in the gland 5.

The mechanical sealing structure further comprises a spring seat 2 sleeved on the shaft sleeve 1, one end of the spring seat 2 is connected with the positioning ring 11, and the other end of the spring seat 2 is connected with the moving ring 3.

The peripheral wall of the positioning ring 11 is provided with a clamping groove 12, one side of the spring seat 2 is provided with a clamping jaw 21, and the clamping jaw 21 is clamped in the clamping groove 12.

The utility model discloses a be equipped with draw-in groove 12 on the perisporium of holding ring 11 be equipped with jack catch 21 on one side of spring holder 2, can make spring holder 2 fix on axle sleeve 1 through the mode of joint. The positioning ring 11 has a plurality of clamping grooves 12 arranged along the circumferential direction, and the clamping jaws 21 are matched with the clamping grooves 12. Preferably, the movable ring 3 is clamped with the spring seat 2.

The movable ring 3 is an alloy movable ring 3 with the surface subjected to anti-wear nitriding treatment, and the static ring 4 is a high-wear-resistance elastic sealing strip. Through changing the rotating ring 3 with the material of quiet ring 4 improves the wearability of rotating ring 3, guarantees that the wearing surface is the high wear-resisting sealing strip of quiet ring 4, and quiet ring 4 is fixed and is used for the location on the pump case, when the machine seal leaked, need not disintegrate the pump case, can dismantle gland 5 that has quiet ring 4 from the pump case, changes wear-resisting quiet ring 4.

More preferably, a stationary ring seal ring 41 is arranged in the seal gland 5, a moving ring seal ring 31 is further arranged on the moving ring 3, a groove is arranged in the end portion of the shaft sleeve 1, and a shaft end seal ring 14 is arranged in the groove.

The other side of the positioning ring 11 is further provided with a machine seal base 7, the machine seal base 7 can be sleeved on the pump shaft, mounting holes 71 are formed in the peripheral wall of the machine seal base 7 at intervals along the circumferential direction, the third fixing piece 72 penetrates through the mounting holes 71 to be abutted to the pump shaft, and the third fixing piece 72 is in threaded connection with the mounting holes 71. Preferably, the third fixing element 72 is a bolt, and the mechanical seal base 7 and the positioning ring 11 are of an integral structure.

The utility model discloses still provide one kind and have above-mentioned arbitrary mechanical seal structure's double entry pump, including the pump case, the rotating ring 3 is installed inside the pump case, the gland 5 with retaining member 6 is installed the pump case is outside.

The double-suction pump comprises a pump body, a pump shaft and a pump shell, wherein the pump shell is arranged on the pump body. When the double suction pump is installed, the spring seat 2, the movable ring 3 and the gland 5 are installed on the shaft sleeve 1, the locking piece 6 is installed on the shaft sleeve 1, the shaft sleeve 1 is fixed on the pump shaft through the locking piece 6, and then the pump shell is installed on the pump body. The positioning ring 11, the spring seat 2 and the moving ring 3 are located inside the pump shell, the gland 5 and the locking piece 6 are located outside the pump shell, holes are formed in the side wall of the gland 5 in the axial direction, holes are also formed in the pump shell, and the gland 5 is fixedly connected with the pump shell through connecting piece threads.

When the mechanical sealing structure of the double-suction pump needs to be checked, maintained and replaced, the pump shell does not need to be detached from the pump body, only the locking piece 6 outside the pump shell needs to be detached from the shaft sleeve 1, the gland 5 with the static ring 4 can be detached from the pump shell, and the movable ring 3 and the static ring 4 can be checked and replaced.

Double suction pump, damage at the inside part of mechanical seal structure and cause sealed bad back, only need to dismantle retaining member 6 of 1 one end of axle sleeve from axle sleeve 1 gets off, can dismantle gland 5 from the pump case get off, need not the pump case that disintegrates, can inspect, maintain, change mechanical seal structure's internal part, also can reduce because of the unnecessary spare parts expense that disintegrates and overhaul and cause. The utility model discloses a double entry pump simple structure, easy dismounting, with low costs.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above embodiments, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention still fall within the scope of the present invention.

Claims (10)

1. The utility model provides a double entry pump mechanical seal structure, includes axle sleeve, rotating ring, quiet ring sum gland, quiet ring circumference is fixed in the gland, its characterized in that: still include the retaining member, be equipped with the holding ring on the axle sleeve, the rotating ring the gland the retaining member is established in proper order the cover is established one side of holding ring, the retaining member is fixed on the axle sleeve, with the holding ring cooperation is used for with the rotating ring with the gland is fixed on the axle sleeve.

2. A double suction pump mechanical seal structure according to claim 1, wherein: the locking piece comprises a locking ring and a first fixing piece, a shaft sleeve hole is formed in the peripheral wall of the shaft sleeve, a first fixing hole is formed in the peripheral wall of the locking ring in the radial direction and communicated with the shaft sleeve hole, and the first fixing piece penetrates through the first fixing hole and is installed in the shaft sleeve hole.

3. A double suction pump mechanical seal structure according to claim 2, characterized in that: the shaft sleeve hole is arranged along the circumferential direction of the shaft sleeve at intervals, and the first fixing hole is matched with the shaft sleeve hole.

4. A double suction pump mechanical seal structure according to claim 3, wherein: the first fixing piece is in threaded connection with the first fixing hole and the shaft sleeve hole.

5. A double suction pump mechanical seal structure according to claim 2, characterized in that: the locking member further comprises a second fixing member, a second fixing hole is formed in the side wall of the locking ring in the axial direction, and the second fixing member is installed in the second fixing hole.

6. A double suction pump mechanical seal structure according to claim 2, characterized in that: the locking ring is used for being pressed against the side wall of the locking ring, and the locking ring is used for being pressed against the side wall of the pressing cover when being assembled, so that the installation position of the locking piece on the shaft sleeve is determined.

7. A double suction pump mechanical seal structure according to any one of claims 1 to 6, characterized in that: the bearing is characterized by further comprising a spring seat sleeved on the shaft sleeve, one end of the spring seat is connected with the positioning ring, and the other end of the spring seat is connected with the moving ring.

8. A double suction pump mechanical seal structure according to claim 7, wherein: the peripheral wall of the positioning ring is provided with a clamping groove, one side of the spring seat is provided with a clamping jaw, and the clamping jaw is clamped in the clamping groove.

9. A double suction pump mechanical seal structure according to claim 1, wherein: the movable ring is a movable ring with the surface subjected to anti-wear nitriding treatment, and the static ring is a high-wear-resistance sealing strip.

10. A double suction pump having a mechanical seal structure according to any one of claims 1 to 9, comprising a pump housing, wherein: the movable ring is arranged in the pump shell, and the gland and the locking piece are arranged outside the pump shell.

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