CN216199031U - Mechanical seal structure for integrated double-end-face centrifugal slurry pump - Google Patents
Mechanical seal structure for integrated double-end-face centrifugal slurry pump Download PDFInfo
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- CN216199031U CN216199031U CN202122757143.5U CN202122757143U CN216199031U CN 216199031 U CN216199031 U CN 216199031U CN 202122757143 U CN202122757143 U CN 202122757143U CN 216199031 U CN216199031 U CN 216199031U
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Abstract
The utility model relates to the technical field of centrifugal slurry pumps, in particular to a mechanical sealing structure for a container type double-end-face centrifugal slurry pump. The device's the rotation axis outside sets up the seal box, and axle sleeve fixed seal connects medium side rotating ring, and medium side stationary ring forms a set of friction pair with medium side rotating ring, and medium side stationary ring install on the sealing gland and with the sealing gland between sealed, and medium side stationary ring spring mounting is on the sealing gland, and medium side stationary ring spring exerts elasticity to medium side stationary ring and makes medium side stationary ring compress tightly medium side rotating ring and form sealedly. The utility model realizes good sealing and lubricating effect, fast heat dissipation and convenient installation and maintenance, prolongs the service life of the mechanical seal of the centrifugal slurry pump, prolongs the service cycle of the pump, ensures the long-period production on site, improves the production benefit and protects the production site environment.
Description
The technical field is as follows:
the utility model relates to the technical field of centrifugal slurry pumps, in particular to a mechanical sealing structure for a container type double-end-face centrifugal slurry pump.
Background art:
the mechanical seal for the centrifugal slurry pump in the market at present is mainly single-end-face mechanical seal, and as slurry medium viscosity and specific gravity are large, medium particles are many, fluidity is not smooth, heat dissipation of a single-end-face mechanical seal sealing face is not good, sealing is frequently burnt, the service cycle of the pump is short, and maintenance is frequent, so that production is affected. The medium leaked in the sealing way can cause environmental pollution, and does not meet the national environmental protection requirement.
The utility model has the following contents:
the utility model aims to solve the technical problem of providing a mechanical sealing structure for a container type double-end-face centrifugal slurry pump, which realizes good sealing and lubricating effects, fast heat dissipation and convenient installation and maintenance, prolongs the service life of the mechanical seal of the centrifugal slurry pump, prolongs the service cycle of the pump, ensures the long-period production on site, improves the production benefits and protects the production site environment. The mechanical sealing structure overcomes the defects that the mechanical sealing structure for the existing centrifugal slurry pump has short service life, short service cycle of the pump and frequent maintenance and influences production.
The technical scheme adopted by the utility model is as follows: a mechanical seal structure for a container type double-end-face centrifugal slurry pump comprises a rotating shaft of the centrifugal slurry pump and a shaft sleeve sleeved on the rotating shaft, wherein the shaft sleeve is arranged on the right side of a main impeller; the outer side of the rotating shaft is provided with a sealing box, the shaft sleeve is fixedly and hermetically connected with a medium side movable ring, a medium side static ring and the medium side movable ring form a group of friction pairs, the medium side static ring is arranged on a sealing gland and sealed with the sealing gland, a medium side static ring spring is arranged on the sealing gland, and the medium side static ring spring applies elasticity to the medium side static ring to enable the medium side static ring to tightly press the medium side movable ring to form sealing;
the outer end of the sealing gland is sealed with the inner wall of a sealing box, the right end of the sealing gland is fixedly connected with the left end of the sealing shell, the sealing shell is hermetically connected with the inner wall of the sealing box, the right end of the sealing shell is hermetically connected with an atmosphere side static ring, an atmosphere side dynamic ring and the atmosphere side static ring form a group of friction pairs, the atmosphere side dynamic ring is installed on an atmosphere side dynamic ring spring seat, the atmosphere side dynamic ring spring seat is fixed on a shaft sleeve, and the right end of the atmosphere side dynamic ring spring on the atmosphere side dynamic ring spring seat applies spring force to the atmosphere side dynamic ring to enable the atmosphere side dynamic ring to tightly press the atmosphere side static ring to form sealing;
the sealing device comprises a shaft sleeve, a medium side movable ring, a medium side stationary ring, a sealing gland, a sealing box, a sealing shell, an atmosphere side stationary ring and a sealing cavity formed between the atmosphere side movable ring, an oil guide ring outer sleeve and an oil guide ring inner sleeve are arranged in the sealing cavity, the oil guide ring outer sleeve is fixed on the sealing shell, the oil guide ring inner sleeve is arranged on the atmosphere side movable ring spring seat and fixed, a spiral oil guide groove is arranged on the inner wall of the oil guide ring outer sleeve, the oil guide ring is internally sleeved at the lower end of the oil guide ring outer sleeve, a spiral oil guide groove matched with the oil guide ring outer sleeve is arranged on the outer wall of the oil guide ring inner sleeve, cooling lubricating oil inlets are respectively formed on the side wall of the right end of the sealing box and the side wall of the right end of the sealing shell, the cooling lubricating oil inlets are communicated with the sealing cavity on the right side of the oil guide ring outer sleeve and the oil guide ring inner sleeve, cooling lubricating oil outlets are respectively formed on the side wall of the left end of the sealing box and the sealing shell, and the cooling lubricating oil guide ring outer sleeve, The left sealing chamber of the oil guide ring inner sleeve is communicated, and the cooling lubricating oil inlet and the cooling lubricating oil outlet are communicated with an oil storage chamber system arranged outside the sealing box.
The right end of the sealing gland is connected with the sealing shell through a fixing bolt II.
The shaft sleeve is provided with a locking ring, and the other end of the locking ring is connected with the sealing gland through a fixing bolt I.
The medium side static ring spring applies elasticity to the medium side static ring through the medium side static ring push ring to enable the medium side static ring to tightly press the medium side moving ring to form sealing; the right end of an atmosphere side moving ring spring on the atmosphere side moving ring spring seat applies spring force to the atmosphere side moving ring through an atmosphere side moving ring push ring so that the atmosphere side moving ring compresses the atmosphere side static ring to form sealing.
The outer oil ring sleeve is fixed on the sealing shell through a locking screw II, and the inner oil guide ring sleeve and the atmosphere side moving ring spring seat are fixed on the shaft sleeve through a locking screw I.
The shaft sleeve is connected with the medium side rotating ring through an anti-rotation pin I, the right end of the sealing shell is connected with the atmosphere side static ring through an anti-rotation pin II, and the sealing shell is connected with the inner wall of the sealing box through an anti-rotation pin III.
The sealing between the cooling lubricating oil inlet and the cooling lubricating oil outlet is realized by sealing the outer wall of the sealing shell and the inner wall of the sealing box through a sealing ring, the outer wall of the sealing shell at the right end of the cooling lubricating oil inlet and the inner wall of the sealing box are sealed through the sealing ring, and the outer wall of the sealing shell at the left end of the cooling lubricating oil outlet and the inner wall of the sealing box are sealed through the sealing ring.
The atmosphere side movable ring and the shaft sleeve are sealed through a sealing ring.
The utility model has the beneficial effects that:
1. compared with the traditional single-end-face mechanical seal, the integrated double-end-face mechanical seal is convenient to install and maintain;
2. the integrated design is adopted, the whole sealing body can be regarded as a part, the gap does not need to be adjusted when the sealing is installed, and the assembly efficiency of the pump is improved;
3. the self-flushing structure is adopted, the lubricating and cooling oil is supplied to the sealing cavity by the independent lubricating and cooling oil tank, and the pressure generated by the lubricating and cooling oil during the working of the oil guide ring flushes the medium side sealing end face, so that the heat generated by the medium side sealing end face is quickly dissipated, and the sealing burning loss caused by poor heat dissipation when the pumping is vacuumized or the medium has high viscosity is avoided.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, a mechanical seal structure for a cartridge type double-end-face centrifugal slurry pump comprises a rotating shaft 4 of the centrifugal slurry pump and a shaft sleeve 3 sleeved on the rotating shaft 4, wherein the shaft sleeve 3 is arranged on the right side of a main impeller 1; the outer side of the rotating shaft 4 is provided with a sealing box 2, a shaft sleeve 3 is fixedly and hermetically connected with a medium side movable ring 8, a medium side static ring 7 and the medium side movable ring 8 form a group of friction pairs, the medium side static ring 7 is installed on a sealing gland 15 and sealed with the sealing gland 15, a medium side static ring spring 9 is installed on the sealing gland 15, and the medium side static ring spring 9 applies elasticity to the medium side static ring 7 to enable the medium side static ring 7 to tightly press the medium side movable ring 8 to form sealing;
the outer end of a sealing gland 15 is sealed with the inner wall of a sealing box 2, the right end of the sealing gland 15 is fixedly connected with the left end of a sealing shell 17, the sealing shell 17 is hermetically connected with the inner wall of the sealing box 2, the right end of the sealing shell 17 is hermetically connected with an atmosphere side static ring 11, an atmosphere side dynamic ring 12 and the atmosphere side static ring 11 form a group of friction pairs, the atmosphere side dynamic ring 12 is installed on an atmosphere side dynamic ring spring seat 16, the atmosphere side dynamic ring spring seat 16 is fixed on a shaft sleeve 3, and the right end of an atmosphere side dynamic ring spring 10 on the atmosphere side dynamic ring spring seat 16 applies spring force to the atmosphere side dynamic ring 12 to enable the atmosphere side dynamic ring 12 to tightly press the atmosphere side static ring 11 to form sealing;
a sealing cavity 18 is formed among the shaft sleeve 3, the medium side movable ring 8, the medium side stationary ring 7, the sealing gland 15, the sealing box 2, the sealing shell 17, the atmosphere side stationary ring 11 and the atmosphere side movable ring 12, an oil guide ring outer sleeve 5 and an oil guide ring inner sleeve 6 are arranged in the sealing cavity 18, the oil ring outer sleeve 5 is fixed on the sealing shell 17, the oil guide ring inner sleeve 6 is arranged on and fixed on an atmosphere side movable ring spring seat 16, the inner wall of the oil guide ring outer sleeve 5 is provided with a spiral oil guide groove, the oil guide ring inner sleeve 6 is arranged at the lower end of the oil guide ring outer sleeve 5, the outer wall of the oil guide ring inner sleeve 6 is provided with a spiral oil guide groove matched with the oil guide ring outer sleeve 5, the side wall of the right end of the sealing box 2 and the side wall of the right end of the sealing shell 17 are both provided with cooling lubricating oil inlets 19, the cooling lubricating oil inlets 19 are communicated with the sealing cavity 18 on the right sides of the oil guide ring outer sleeve 5 and the oil guide ring inner sleeve 6, the left end side wall of the sealing box 2 and the left end side wall of the sealing shell 17 are both provided with cooling lubricating oil outlets 26, the cooling lubricant outlet 20 is communicated with the left sealing chamber 18 of the oil guide ring outer sleeve 5 and the oil guide ring inner sleeve 6, and the cooling lubricant inlet 19 and the cooling lubricant outlet 26 are both communicated with an oil storage chamber system arranged outside the sealing box 2.
The right end of the sealing gland 15 is connected with the sealing shell 17 through a fixing bolt II 25.
The shaft sleeve 3 is provided with a locking ring 21, and the other end of the locking ring 21 is connected with the sealing gland 15 through a fixing bolt I24.
The medium side static ring spring 9 applies elasticity to the medium side static ring 7 through the medium side static ring push ring 14 to enable the medium side static ring 7 to tightly press the medium side dynamic ring 8 to form sealing; the atmosphere side movable ring spring 10 on the atmosphere side movable ring spring seat 16 applies spring force to the atmosphere side movable ring 12 through the atmosphere side movable ring push ring 13 to enable the atmosphere side movable ring 12 to tightly press the atmosphere side static ring 11 to form sealing.
The oil ring outer sleeve 5 is fixed on the sealing shell 17 through a locking screw II 23, and the oil guide ring inner sleeve 6 and the atmosphere side moving ring spring seat 16 are fixed on the shaft sleeve 3 through a locking screw I22.
The shaft sleeve 3 is connected with the medium side rotating ring 8 through an anti-rotation pin I27, the right end of the sealing shell 17 is connected with the atmosphere side static ring 11 through an anti-rotation pin II 28, and the sealing shell 17 is connected with the inner wall of the sealing box 2 through an anti-rotation pin III 29.
The sealing between the cooling lubricating oil inlet 19 and the cooling lubricating oil outlet 20 is realized by sealing the outer wall of the sealing shell 17 and the inner wall of the seal box 2 through a sealing ring, the sealing between the outer wall of the sealing shell 17 at the right end of the cooling lubricating oil inlet 19 and the inner wall of the seal box 2 is realized through a sealing ring, and the sealing between the outer wall of the sealing shell 17 at the left end of the cooling lubricating oil outlet 20 and the inner wall of the seal box 2 is realized through a sealing ring.
The atmosphere side moving ring 12 and the shaft sleeve 3 are sealed by a sealing ring.
When the sealing device is used, when the rotating shaft 4 rotates, the medium side moving ring 8 fixed on the shaft sleeve 3 rotates along with the shaft sleeve 3, and under the action of the spring thrust of the medium side static ring spring 9, the medium side moving ring 8 and the medium side static ring 7 rub to realize sealing; the atmosphere side rotating ring 12 rotates along with the rotating shaft 4 and the atmosphere side rotating ring spring seat 16, and under the action of the spring thrust of the atmosphere side rotating ring spring 10, the atmosphere side rotating ring 12 and the atmosphere side static ring 11 realize two seals. Two sets of friction pairs are connected in series, lubricating cooling oil enters the sealing cavity 18 from the cooling lubricating oil inlet 19 and goes out from the cooling lubricating oil outlet 26 through the oil guide ring, and pressure generated when the oil guide ring works washes the medium side sealing end face, so that heat generated by the medium side sealing end face is quickly dissipated, sealing burning loss caused by poor heat dissipation when pumping vacuum or medium viscosity is high is avoided, and the service life of sealing is prolonged.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (8)
1. A mechanical seal structure for a cartridge type double-end-face centrifugal slurry pump comprises a rotating shaft (4) of the centrifugal slurry pump and a shaft sleeve (3) sleeved on the rotating shaft (4), wherein the shaft sleeve (3) is arranged on the right side of a main impeller (1); the method is characterized in that: the outer side of the rotating shaft (4) is provided with a seal box (2), the shaft sleeve (3) is fixedly connected with a medium side movable ring (8) in a sealing manner, a medium side static ring (7) and the medium side movable ring (8) form a group of friction pairs, the medium side static ring (7) is installed on a sealing gland (15) and sealed with the sealing gland (15), a medium side static ring spring (9) is installed on the sealing gland (15), and the medium side static ring spring (9) applies elasticity to the medium side static ring (7) to enable the medium side static ring (7) to compress the medium side movable ring (8) to form sealing;
the outer end of a sealing gland (15) is sealed with the inner wall of a sealing box (2), the right end of the sealing gland (15) is fixedly connected with the left end of a sealing shell (17), the sealing shell (17) is connected to the inner wall of the sealing box (2) in a sealing mode, the right end of the sealing shell (17) is connected with an atmosphere side static ring (11) in a sealing mode, an atmosphere side moving ring (12) and the atmosphere side static ring (11) form a group of friction pairs, the atmosphere side moving ring (12) is installed on an atmosphere side moving ring spring seat (16), the atmosphere side moving ring spring seat (16) is fixed on a shaft sleeve (3), and the right end of an atmosphere side moving ring spring (10) on the atmosphere side moving ring spring seat (16) applies spring force to the atmosphere side moving ring (12) to enable the atmosphere side moving ring (12) to compress the atmosphere side static ring (11) to form sealing;
a sealing cavity (18) is formed among the shaft sleeve (3), the medium side moving ring (8), the medium side static ring (7), the sealing gland (15), the sealing box (2), the sealing shell (17), the atmosphere side static ring (11) and the atmosphere side moving ring (12), an oil guide ring outer sleeve (5) and an oil guide ring inner sleeve (6) are arranged in the sealing cavity (18), the oil guide ring outer sleeve (5) is fixed on the sealing shell (17), the oil guide ring inner sleeve (6) is arranged on and fixed on an atmosphere side moving ring spring seat (16), a spiral oil guide groove is arranged on the inner wall of the oil guide ring outer sleeve (5), the oil guide ring inner sleeve (6) is arranged at the lower end of the oil guide ring outer sleeve (5), the spiral oil guide groove matched with the oil guide ring outer sleeve (5) is arranged on the outer wall of the oil guide ring inner sleeve (6), and cooling lubricating oil inlets (19) are respectively arranged on the right end side wall of the sealing box (2) and the sealing shell (17), this cooling lubricant import (19) is linked together with leading oil ring overcoat (5), sealed cavity (18) on leading oil ring inner cover (6) right side, all opened cooling lubricant export (26) on seal box (2) left end lateral wall and seal shell (17) left end lateral wall, this cooling lubricant export (20) is linked together with leading oil ring overcoat (5), the left sealed cavity (18) of leading oil ring inner cover (6), above-mentioned cooling lubricant import (19), cooling lubricant export (26) all are linked together with the oil storage room system of seal box (2) outside setting.
2. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the right end of the sealing gland (15) is connected with the sealing shell (17) through a fixing bolt II (25).
3. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the shaft sleeve (3) is provided with a locking ring (21), and the other end of the locking ring (21) is connected with the sealing gland (15) through a fixing bolt I (24).
4. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the medium side static ring spring (9) applies elasticity to the medium side static ring (7) through the medium side static ring push ring (14) to enable the medium side static ring (7) to press the medium side dynamic ring (8) to form sealing; the right end of an atmosphere side moving ring spring (10) on the atmosphere side moving ring spring seat (16) applies spring force to the atmosphere side moving ring (12) through an atmosphere side moving ring push ring (13) to enable the atmosphere side moving ring (12) to tightly press the atmosphere side static ring (11) to form sealing.
5. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the oil ring outer sleeve (5) is fixed on the sealed shell (17) through a locking screw II (23), and the oil guide ring inner sleeve (6) and the atmosphere side moving ring spring seat (16) are fixed on the shaft sleeve (3) through a locking screw I (22).
6. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the shaft sleeve (3) is connected with the medium side rotating ring (8) through an anti-rotating pin I (27), the right end of the sealing shell (17) is connected with the atmosphere side static ring (11) through an anti-rotating pin II (28), and the sealing shell (17) is connected with the inner wall of the sealing box (2) through an anti-rotating pin III (29).
7. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the sealing between the cooling lubricating oil inlet (19) and the cooling lubricating oil outlet (20) is realized by sealing the outer wall of the sealing shell (17) and the inner wall of the sealing box (2) through a sealing ring, the outer wall of the sealing shell (17) at the right end of the cooling lubricating oil inlet (19) and the inner wall of the sealing box (2) are sealed through the sealing ring, and the outer wall of the sealing shell (17) at the left end of the cooling lubricating oil outlet (20) and the inner wall of the sealing box (2) are sealed through the sealing ring.
8. The mechanical seal structure for a cartridge type double-end-face centrifugal mud pump according to claim 1, wherein: the atmosphere side movable ring (12) and the shaft sleeve (3) are sealed through a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122757143.5U CN216199031U (en) | 2021-11-11 | 2021-11-11 | Mechanical seal structure for integrated double-end-face centrifugal slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122757143.5U CN216199031U (en) | 2021-11-11 | 2021-11-11 | Mechanical seal structure for integrated double-end-face centrifugal slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199031U true CN216199031U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122757143.5U Active CN216199031U (en) | 2021-11-11 | 2021-11-11 | Mechanical seal structure for integrated double-end-face centrifugal slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216199031U (en) |
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2021
- 2021-11-11 CN CN202122757143.5U patent/CN216199031U/en active Active
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