CN215806302U

CN215806302U - Integrated mechanical seal for slurry pump

Info

Publication number: CN215806302U
Application number: CN202122452341.0U
Authority: CN
Inventors: 黄忠红; 李娇娇; 汤仕芳; 葛利潮
Original assignee: HANGZHOU HENGLI PUMP MANUFACTURING CO LTD
Current assignee: HANGZHOU HENGLI PUMP MANUFACTURING CO LTD
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-02-11
Anticipated expiration: 2031-10-12

Abstract

The utility model discloses an integrated mechanical seal for a slurry pump, which relates to the technical field of slurry pump sealing, and particularly relates to an integrated mechanical seal for a slurry pump, which comprises a mechanical seal shaft sleeve, wherein the left end of the mechanical seal shaft sleeve is fixedly connected with a material seal moving ring seat, the right side of the material seal moving ring seat is sleeved with a material seal friction pair, the outer part of the mechanical seal shaft sleeve is movably sleeved with a seal gland complex, the left side of the seal gland complex is sleeved with a material seal static ring seat, the inner part of the material seal static ring seat is sleeved at the right end of the material seal friction pair, and the right end of the mechanical seal shaft sleeve is sleeved with a water seal moving ring seat. This collection dress formula mechanical seal for slurry pump seals quiet ring and material through the material that the material sealed spring promoted and seals the rotating ring friction and form the sealed thick liquids of liquid film, and the compensation spring contactless thick liquids of material sealed quiet ring can not cause the scale deposit of spring to become invalid.

Description

Integrated mechanical seal for slurry pump

Technical Field

The utility model relates to the technical field of slurry pump sealing, in particular to a cartridge mechanical seal for a slurry pump.

Background

Salt mud and slurry conveying pumps are always main conveying equipment of papermaking and power plants, and because the salt mud and the slurry contain less water and are easy to accumulate and precipitate, the impeller of the pump is blocked and the sealing of the pump fails frequently during conveying of the series of pumps. The problem of blockage is basically solved by adopting an open structure for the impeller at present, but the conveying working condition of a slurry pump is always puzzled by the failure of sealing. The prior structure of packing seal and dynamic seal is usually adopted, the phenomena of running, overflowing, dripping and leakage can occur to the seal, the modern environmental protection requirement can not be met, and the conventional mechanical seal has extremely short service life because the spring is scaled and loses efficacy, thereby greatly increasing the use and maintenance cost and the pollution influence on the environment. Therefore, the integrated mechanical seal for the slurry pump is provided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a cartridge mechanical seal for a slurry pump, and solves the problems in the background technology.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a cartridge mechanical seal for a slurry pump comprises a mechanical seal shaft sleeve, wherein a material seal moving ring seat is fixedly connected to the left end of the mechanical seal shaft sleeve, a material seal friction pair is sleeved on the right side of the material seal moving ring seat, a seal gland complex is movably sleeved on the outer portion of the mechanical seal shaft sleeve, a material seal static ring seat is sleeved on the left side of the seal gland complex, the material seal static ring seat is sleeved on the inner portion of the material seal static ring seat, a water seal moving ring seat is sleeved on the right end of the material seal friction pair, a water seal friction pair is sleeved on the left side of the seal gland complex, a water seal pre-tightening buckle is clamped on the outer portion of the right end of the seal gland complex, the right end of the water seal pre-tightening buckle extends to the outer portion of the water seal moving ring seat, a process screw is sleeved on the inner thread of the water seal pre-tightening buckle, and the water seal pre-tightening buckle is fixedly installed on the water seal moving ring seat through the process screw, the material sealing device comprises a sealing gland complex, a cooling water jacket, a material sealing static ring push plate, a material sealing spring and a material sealing spring, wherein the cooling water jacket is fixedly connected inside the sealing gland complex, the cooling water jacket is movably sleeved outside a mechanical sealing shaft sleeve, a sealing gland water inlet hole is formed in the bottom of the sealing gland complex, sealing gland water outlet holes which are distributed in an inclined mode are formed in the top of the sealing gland complex, the material sealing static ring push plate is movably sleeved inside the sealing gland complex, the material sealing spring is fixedly connected to the right side of the material sealing static ring push plate, and the right end of the material sealing spring is fixedly connected inside the sealing gland complex.

Optionally, the material sealing friction pair comprises a material sealing rotating ring and a material sealing static ring, the right side of the material sealing rotating ring is connected with the left side of the material sealing static ring in a sliding manner, the left side of the material sealing rotating ring is sleeved in the material sealing rotating ring seat, a material sealing rotating ring O-shaped ring is arranged between the material sealing rotating ring seat and the material sealing rotating ring, a material sealing rotating ring rotating pin is inserted into the left end of the material sealing rotating ring, and the left end of the material sealing rotating ring rotating pin is inserted into the material sealing rotating ring seat.

Optionally, the right side of the material sealing static ring is sleeved inside the material sealing static ring seat, a material sealing static ring O-shaped ring is arranged between the material sealing static ring and the material sealing static ring seat, and a pump cover O-shaped ring is arranged between the material sealing static ring seat and the sealing gland union body.

Optionally, the water seal friction pair comprises a water seal static ring and a water seal dynamic ring, the right side of the water seal static ring is connected with the left side of the material seal static ring in a sliding manner, the left side of the water seal static ring is sleeved on the right side of the sealing gland complex, a water seal static ring anti-rotation pin is inserted into the left side of the water seal static ring, the left end of the water seal static ring anti-rotation pin is inserted into the sealing gland complex, and a water seal static ring O-shaped ring is arranged between the water seal static ring anti-rotation pin and the sealing gland complex.

Optionally, the right end of the water seal rotating ring is sleeved on the left side of the water seal rotating ring seat, a water seal rotating ring O-shaped ring is arranged between the water seal rotating ring and the water seal rotating ring seat, the right end of the water seal rotating ring is fixedly connected with a water seal spring, and the right end of the water seal spring is fixedly connected to the inner wall of the water seal rotating ring seat.

Optionally, the left side surface of the material sealing static ring push plate is fixedly connected with the right side surface of the material sealing static ring, a material sealing static ring anti-rotation pin is movably sleeved in the material sealing static ring push plate, and the right end of the material sealing static ring anti-rotation pin is fixedly inserted into the sealing gland complex.

Optionally, the right end of the inner cavity of the cooling water jacket is communicated with the inner ring cavity of the water seal friction pair, the left end of the inner cavity of the cooling water jacket is communicated with the right side of the material seal static ring push plate, the top of the right side of the material seal static ring push plate is communicated with the water outlet hole of the sealing gland, and the right side of the top end of the water inlet hole of the sealing gland is communicated with the inner cavity of the water seal friction pair.

Optionally, a water seal O-shaped ring is arranged between the water seal movable ring seat and the machine seal shaft sleeve, a shaft sleeve clamp spring is clamped outside the right end of the machine seal shaft sleeve, and the shaft sleeve clamp spring is clamped on the right side of the water seal movable ring seat.

The utility model provides a cartridge mechanical seal for a slurry pump, which has the following beneficial effects:

1. this collection dress formula mechanical seal for slurry pump, the material that promotes through the material seal spring seals quiet ring and the friction of material seal rotating ring and forms the sealed thick liquids of liquid film, the compensation spring of material seal quiet ring contactless thick liquids can not cause the scale deposit of spring to become invalid, the sealed cooling water of water blocking passes through the cooling water jacket of water blocking, the outside inside week motion of forced cooling water from cooling water jacket, can wash away the thick liquids on the friction pair, can not cause the thick liquids to pile up on the friction pair and make the vice wearing and tearing of friction and become invalid, simultaneously can also lubricate the friction pair, the vice life of extension seal.

2. This collection dress formula mechanical seal for slurry pump, through the whole seal structure who adopts collection dress formula not only simple to operate, has good sealed effect moreover, ensures that slurry delivery pump has good reliability and long-life nature.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. a material sealing ring seat; 2. a material sealing ring; 3. material sealing static ring; 4. a material sealing static ring anti-rotation pin; 5. a water seal static ring anti-rotation pin; 6. water sealing the static ring; 7. water sealing the movable ring; 8. a water seal spring; 9. water sealing the O-shaped ring; 10. a shaft sleeve clamp spring; 11. a water seal pre-tightening buckle; 12. a process screw; 13. water sealing a movable ring O-shaped ring; 14. a cooling water jacket; 15. water sealing the static ring O-shaped ring; 16. a material sealing spring; 17. a material sealing static ring push plate; 18. the pump cover is an O-shaped ring; 19. sealing a static ring O-shaped ring; 20. sealing an O-shaped ring by the material; 21. the material sealing rotating ring prevents the rotation pin; A. material sealing static ring seat; B. a gland combination; C. a rotating shaft; E. a mechanical seal shaft sleeve; g. A water inlet hole of the sealing gland; H. and sealing and pressing the water outlet hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, the present invention provides a technical solution: a packaging type mechanical seal for a slurry pump comprises a mechanical seal shaft sleeve E, a rotating shaft C is fixedly sleeved in the mechanical seal shaft sleeve E, a material seal movable ring seat 1 is fixedly connected to the left end of the mechanical seal shaft sleeve E, a material seal friction pair is sleeved on the right side of the material seal movable ring seat 1 and comprises a material seal movable ring 2 and a material seal static ring 3, the right side of the material seal movable ring 2 is connected with the left side of the material seal static ring 3 in a sliding mode, the left side of the material seal movable ring 2 is sleeved in the material seal movable ring seat 1, a material seal movable ring O-shaped ring 20 is arranged between the material seal movable ring seat 1 and the material seal movable ring 2, a material seal movable ring rotation preventing pin 21 is inserted in the left end of the material seal ring 2, a seal gland combination body B is movably sleeved on the outer portion of the mechanical seal shaft sleeve, a material seal ring seat A is sleeved on the left side of the seal gland combination body B, and the material seal ring seat A is sleeved at the right end of the material seal static ring friction pair, the right side of the material sealing static ring 3 is sleeved inside the material sealing static ring seat A, a material sealing static ring O-shaped ring 19 is arranged between the material sealing static ring 3 and the material sealing static ring seat A, a pump cover O-shaped ring 18 is arranged between the material sealing static ring seat A and the sealing gland complex B, a water sealing movable ring seat is sleeved at the right end of the machine sealing shaft sleeve E, a water sealing O-shaped ring 9 is arranged between the water sealing movable ring seat and the machine sealing shaft sleeve E, a shaft sleeve clamp spring 10 is clamped outside the right end of the machine sealing shaft sleeve E, the shaft sleeve clamp spring 10 is clamped at the right side of the water sealing movable ring seat, all parts are locked through the shaft sleeve clamp spring 10 on the machine sealing shaft sleeve E by arranging the shaft sleeve clamp spring 10 to form accurate working pressure and sealing effect, good sealing capacity of each leakage point of sealing is ensured, a water sealing friction pair is sleeved at the left side of the sealing gland complex B, and the left end of the water sealing friction pair is sleeved at the right side of the sealing gland complex B, the water seal friction pair comprises a water seal static ring 6 and a water seal dynamic ring 7, the right side of the water seal static ring 6 is connected with the left side of the material seal static ring 3 in a sliding manner, the left side of the water seal static ring 6 is sleeved on the right side of a seal gland complex body B, a water seal static ring anti-rotation pin 5 is inserted into the left side of the water seal static ring 6, the left end of the water seal static ring anti-rotation pin 5 is inserted into the seal gland complex body B, a water seal static ring O-shaped ring 15 is arranged between the water seal static ring anti-rotation pin 5 and the seal gland complex body B, the right end of the water seal dynamic ring 7 is sleeved on the left side of the water seal dynamic ring seat, a water seal dynamic ring O-shaped ring 13 is arranged between the water seal dynamic ring 7 and the water seal dynamic ring seat, a water seal spring 8 is fixedly connected with the right end of the water seal dynamic ring 7, the right end of the water seal spring 8 is fixedly connected into the inner wall of the water seal dynamic ring seat, a pre-tightening buckle 11 is clamped outside the water seal static ring seat, and the right end of the water seal pre-tightening buckle 11 extends to the outside of the water seal dynamic ring seat, the inner thread of the water seal pre-tightening buckle 11 is sleeved with a process screw 12, the water seal pre-tightening buckle 11 is fixedly arranged on a water seal movable ring seat through the process screw 12, the length of the water seal pre-tightening buckle 11 directly controls the pre-tightening force of a water seal by arranging the water seal pre-tightening buckle 11, the water seal pre-tightening buckle is directly arranged without adjustment during assembly, the water seal pre-tightening buckle 11 is directly loosened after mechanical seal installation, the technical requirement of seal installation which needs to be adjusted is avoided, the inner part of a seal gland complex B is fixedly connected with a cooling water jacket 14, the cooling water jacket 14 is movably sleeved outside a machine seal shaft sleeve E, the bottom of the seal gland complex B is provided with a seal gland water inlet hole G, the top of the seal gland complex B is provided with seal gland water outlet holes H which are distributed in an inclined manner, the right end of the inner cavity of the cooling water jacket 14 is communicated with the inner ring cavity of a water seal friction pair, and the left end of the inner cavity of the cooling water jacket 14 is communicated with the right side of a material static seal ring push plate 17, the top of the right side of the material sealing static ring push plate 17 is communicated with a water outlet hole H of a sealing gland, the right side of the top of a water inlet hole G of the sealing gland is communicated with an inner cavity of a water sealing friction pair, after sealing cooling water is communicated, cooling water can only flow to the water sealing friction pair through the outside of the cooling water jacket 14 and then flows out of the sealing gland complex B from the inside of the cooling water jacket 14 to the part of the material sealing static ring push plate 17, cooling water is forced to circulate to take away heat of the friction pair and slightly leaked slurry, simultaneously slurry with slightly leaked slurry is directly taken out through the flow of the cooling water and cannot enter a water sealing end, the effects of protecting the material sealing and the water sealing are simultaneously played, the service life of the mechanical seal is obviously prolonged, the material sealing static ring push plate 17 is movably sleeved in the sealing gland complex B, and a material sealing spring 16 is fixedly connected to the right side of the material sealing ring push plate 17, the right end of the material sealing spring 16 is fixedly connected to the inside of the sealing gland complex B, the left side surface of the material sealing static ring push plate 17 is fixedly connected with the right side surface of the material sealing static ring 3, the material sealing static ring push plate 17 and the material sealing static ring 3 are pushed by the material sealing spring 16 to be pressed with the material sealing moving ring 2 leftwards to form a liquid film sealing slurry medium, the material sealing spring 16 on the right side of the material sealing static ring 3 is not in contact with slurry and cannot cause scaling failure of the spring, the material sealing static ring anti-rotation pin 4 is sleeved in the inner part of the material sealing static ring push plate 17, and the right end of the material sealing static ring anti-rotation pin 4 is fixedly inserted into the inside of the sealing gland complex B.

In conclusion, when the integrated mechanical seal for the slurry pump is used, all parts are locked through a shaft sleeve clamp spring 10 on a machine seal shaft sleeve E, a rotating shaft C drives the machine seal shaft sleeve E to rotate together, a seal gland union body B is connected with an external pump cover and does not rotate, a material seal static ring push plate 17 and a material seal static ring 3 are pushed by a material seal spring 16 to contact with a material seal rotating ring 2 leftwards to form liquid film seal slurry, cooling water flows into a water seal friction pair through a seal gland water inlet hole G to cool the water seal friction pair, meanwhile, the slurry on the water seal friction pair can be washed away, the accumulation of the slurry on the friction pair cannot be caused, the friction pair is abraded and fails, then the slurry flows leftwards through the inner periphery of a cooling water jacket 14, and finally the slurry is discharged through a seal gland water outlet hole H.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a collection dress formula mechanical seal for slurry pump, includes mechanical seal axle sleeve (E), its characterized in that: the left end of the mechanical seal shaft sleeve (E) is fixedly connected with a material seal movable ring seat (1), the right side of the material seal movable ring seat (1) is sleeved with a material seal friction pair, the outer part of the mechanical seal shaft sleeve (E) is movably sleeved with a seal gland complex body (B), the left side of the seal gland complex body (B) is sleeved with a material seal static ring seat (A), the inner part of the material seal static ring seat (A) is sleeved at the right end of the material seal friction pair, the right end of the mechanical seal shaft sleeve (E) is sleeved with a water seal movable ring seat, the left side of the seal gland complex body (B) is sleeved with a water seal friction pair, the left end of the water seal friction pair is sleeved at the right side of the seal gland complex body (B), the outer part of the right end of the seal gland complex body (B) is clamped with a water seal pre-tightening buckle (11), the right end of the water seal pre-tightening buckle (11) extends to the outer part of the water seal movable ring seat, the inner thread of the water seal pre-tightening buckle (11) is sleeved with a process screw (12), the water seal pre-tightening buckle (11) is fixedly mounted on the water seal moving ring seat through a process screw (12), a cooling water jacket (14) is fixedly connected inside the seal gland complex (B), the cooling water jacket (14) is movably sleeved outside the machine seal shaft sleeve (E), a seal gland water inlet hole (G) is formed in the bottom of the seal gland complex (B), seal gland water outlet holes (H) which are distributed in an inclined mode are formed in the top of the seal gland complex (B), a material seal static ring push plate (17) is movably sleeved inside the seal gland complex (B), a material seal spring (16) is fixedly connected to the right side of the material seal static ring push plate (17), and the right end of the material seal spring (16) is fixedly connected inside the seal gland complex (B).

2. The integrated mechanical seal for a slurry pump according to claim 1, wherein: the material sealing friction pair comprises a material sealing movable ring (2) and a material sealing static ring (3), the right side of the material sealing movable ring (2) is connected with the left side of the material sealing static ring (3) in a sliding mode, the left side of the material sealing movable ring (2) is sleeved inside a material sealing movable ring seat (1), a material sealing movable ring O-shaped ring (20) is arranged between the material sealing movable ring seat (1) and the material sealing movable ring (2), a material sealing movable ring anti-rotation pin (21) is inserted into the left end of the material sealing movable ring (2), and the left end of the material sealing movable ring anti-rotation pin (21) is inserted into the material sealing movable ring seat (1).

3. The integrated mechanical seal for a slurry pump according to claim 2, wherein: the right side of the material sealing static ring (3) is sleeved inside the material sealing static ring seat (A), a material sealing static ring O-shaped ring (19) is arranged between the material sealing static ring (3) and the material sealing static ring seat (A), and a pump cover O-shaped ring (18) is arranged between the material sealing static ring seat (A) and the sealing gland union body (B).

4. The integrated mechanical seal for a slurry pump according to claim 1, wherein: the water seal friction pair comprises a water seal static ring (6) and a water seal moving ring (7), the right side of the water seal static ring (6) is connected with the left side of the material seal static ring (3) in a sliding mode, the left side of the water seal static ring (6) is connected with the right side of a seal gland complex body (B) in a sleeved mode, a water seal static ring rotation preventing pin (5) is inserted into the left side of the water seal static ring (6), the left end of the water seal static ring rotation preventing pin (5) is inserted into the inside of the seal gland complex body (B), and a water seal static ring O-shaped ring (15) is arranged between the water seal static ring rotation preventing pin (5) and the seal gland complex body (B).

5. The integrated mechanical seal for a slurry pump according to claim 4, wherein: the right-hand member of water seal rotating ring (7) cup joints the left side at water seal rotating ring seat, be provided with water seal rotating ring O type circle (13) between water seal rotating ring (7) and the water seal rotating ring seat, the right-hand member fixedly connected with water seal spring (8) of water seal rotating ring (7), the right-hand member fixed connection of water seal spring (8) is in the inner wall of water seal rotating ring seat.

6. The integrated mechanical seal for a slurry pump according to claim 1, wherein: the left side surface of the material sealing static ring push plate (17) is fixedly connected with the right side surface of the material sealing static ring (3), the material sealing static ring anti-rotation pin (4) is sleeved on the inner portion of the material sealing static ring push plate (17), and the right end of the material sealing static ring anti-rotation pin (4) is fixedly inserted into the sealing gland complex body (B).

7. The integrated mechanical seal for a slurry pump according to claim 1, wherein: the right end of the inner cavity of the cooling water jacket (14) is communicated with the inner ring cavity of the water seal friction pair, the left end of the inner cavity of the cooling water jacket (14) is communicated with the right side of the material seal static ring push plate (17), the top on the right side of the material seal static ring push plate (17) is communicated with a water outlet hole (H) of a seal gland, and the right side of the top end of a water inlet hole (G) of the seal gland is communicated with the inner cavity of the water seal friction pair.

8. The integrated mechanical seal for a slurry pump according to claim 1, wherein: be provided with water seal O type circle (9) between water seal rotating ring seat and the machine seal axle sleeve (E), the outside joint of machine seal axle sleeve (E) right-hand member has axle sleeve jump ring (10), axle sleeve jump ring (10) joint is on the right side of water seal rotating ring seat.