CN115750434B - Wear protection device is fallen to sediment stuff pump backplate - Google Patents
Wear protection device is fallen to sediment stuff pump backplateInfo
- Publication number
- CN115750434B CN115750434B CN202211516926.7A CN202211516926A CN115750434B CN 115750434 B CN115750434 B CN 115750434B CN 202211516926 A CN202211516926 A CN 202211516926A CN 115750434 B CN115750434 B CN 115750434B
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- China
- Prior art keywords
- guard plate
- rear guard
- impeller
- packing
- stuffing box
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Abstract
本发明涉及一种渣浆泵后护板降磨损保护装置，包括后护板；后护板右侧为叶轮，后护板前部设有前凸台，叶轮后部轮毂处设有密封环，前凸台与密封环配合密封，减少料浆中的大颗粒进入副叶轮侧；后护板左侧为副叶轮，后护板后部凸起两个凸台一形成凹槽结构；副叶轮前部凸起一个凸台二，凸台一和凸台二配合形成密封，解决密封不充分；副叶轮左侧设有填料函，填料函内侧设有转轴套，填料函与转轴套之间设有2～5道盘根；远离副叶轮方向第二圈盘根处设有水封环，水封环右侧设有一道盘根；通过多道密封，减少料浆中的大颗粒进入密封侧，起到对填料和转轴套的保护作用，降低填料更换的速度；盘根右侧套接有三个依次排列的唇形密封圈，保证密封良好。
This invention relates to a wear-reducing protection device for the rear guard plate of a slurry pump, comprising a rear guard plate; an impeller is located on the right side of the rear guard plate, with a front boss at the front of the rear guard plate and a sealing ring at the hub of the impeller at the rear. The front boss and the sealing ring cooperate to seal, reducing the entry of large particles in the slurry into the secondary impeller side; an secondary impeller is located on the left side of the rear guard plate, with two protrusions forming a groove structure at the rear of the rear guard plate; a second protrusion is located at the front of the secondary impeller, with protrusions one and two cooperating to form a seal, solving the problem of insufficient sealing; a stuffing box is located on the left side of the secondary impeller, with a rotating shaft sleeve inside the stuffing box, and 2 to 5 packing rings between the stuffing box and the rotating shaft sleeve; a water seal ring is located at the second packing ring away from the secondary impeller, with a packing ring on the right side of the water seal ring; through multiple seals, the entry of large particles in the slurry into the sealing side is reduced, thus protecting the packing and rotating shaft sleeve and reducing the packing replacement speed; three sequentially arranged lip seals are fitted onto the right side of the packing ring to ensure good sealing.
Description
Technical Field
The invention relates to the technical field of slurry pumps, in particular to a wear-reducing protection device for a rear guard plate of a slurry pump.
Background
The slurry pump is a machine which increases the energy of solid and liquid mixed media by the action of centrifugal force, converts electric energy into kinetic energy and potential energy of the media, belongs to a centrifugal pump in terms of working principle, and is one of the indispensable equipment in each technological process of mineral separation and coal separation plants at present.
The back backplate among the prior art, with impeller and vice impeller's leakproofness poor, the big granule of sediment stuff pump inner chamber gets into sealed side, and the wearing and tearing are great, need often change the packing, cause the inconvenience of construction.
The packing seal is a dynamic seal device which can generate pressing force between packing and a rotating piece and a fixed piece through the self-tightening action of pre-tightening or medium pressure, has more structural forms and is commonly used for arranging packing by a packing box. The stuffing box in the prior art is characterized in that the water seal ring is arranged at the innermost side, clear water higher than the protruding pressure of the pump is injected to seal the stuffing box, slurry dilution can be caused by permeation of the clear water, meanwhile, large particles in the slurry enter the sealing side to cause abrasion, the sealing service time of the slurry pump is short, and the stuffing needs to be replaced frequently.
Disclosure of Invention
The invention provides a wear-reducing protection device for a rear guard plate of a slurry pump, which aims to solve the problems of poor sealing performance and short service time of the slurry pump.
A wear-reducing protection device for a rear guard plate of a slurry pump comprises a rear guard plate, wherein an impeller is arranged on the right side of the rear guard plate, a front boss is arranged at the front of the rear guard plate, a sealing ring is arranged at a hub at the rear of the impeller, the front boss is matched with the sealing ring for sealing, an auxiliary impeller is arranged on the left side of the rear guard plate, two bosses I are protruded at the rear of the rear guard plate to form a groove structure, a boss II is protruded at the front of the auxiliary impeller, and the two bosses I and the boss II are matched to form sealing.
The auxiliary impeller is characterized in that a stuffing box is arranged on the left side of the auxiliary impeller, a gap is reserved between the stuffing box and the auxiliary impeller, a rotating shaft sleeve is arranged on the inner side of the stuffing box, 2-5 packing rings are arranged between the stuffing box and the rotating shaft sleeve, a water seal ring is arranged at a second packing ring position far away from the direction of the auxiliary impeller, a packing ring is arranged on the right side of the water seal ring, a gland is arranged on the left side of the stuffing box, and the gland is in contact with and tightly pressed with the leftmost packing ring.
Further, three lip-shaped sealing rings are arranged on the right side of the packing, the lip-shaped sealing rings are sleeved on the rotating shaft sleeve and are sequentially arranged, and the outer sides of the lip-shaped sealing rings are in sealing connection with the stuffing box.
Further, the outer side of the rear guard plate is provided with a shell, the rear guard plate is fixed with the shell through bolts, and the impeller and the auxiliary impeller are all wound on the rotating shaft and rotate along with the rotating shaft.
In summary, the invention has the following beneficial technical effects:
1. The invention improves the structure of the rear guard plate, the front boss of the rear guard plate is sealed with the impeller sealing ring, the fit clearance between the rear guard plate and the impeller hub is controlled, large particles in slurry are reduced to enter the side of the auxiliary impeller, the flow rate of the slurry entering the auxiliary impeller cavity is reduced, two bosses are formed at the rear part of the rear guard plate, the end face of the auxiliary impeller is provided with the bosses, and the bosses are matched with the grooves of the rear guard plate to form a sealing structure, so that the problem of insufficient sealing is solved, the time interval for stopping and overhauling is prolonged, and the slurry pump is more economical and more convenient to use.
2. 2-5 Packing is arranged between the packing box and the rotating shaft sleeve, one packing is arranged on the inner side of the water seal ring, and large particles in slurry are reduced to enter the sealing side through multi-seal, so that abrasion is reduced, the protection effect on the packing and the rotating shaft sleeve is achieved, and the packing replacement speed is reduced.
3. The lip-shaped sealing ring further seals the slurry, has good sealing performance in a certain pressure and temperature range, can automatically improve the sealing degree along with the increase of pressure, and ensures good sealing.
Drawings
FIG. 1 is a schematic diagram of a slurry pump according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a wear-reducing protection device for a rear guard plate of a slurry pump according to an embodiment of the present invention;
FIG. 3 is a left side view of a back guard in an embodiment of the invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
the reference numerals are 1, a rear guard board, 2, an impeller, 3, a front boss, 4, a sealing ring, 5, an auxiliary impeller, 6, a boss I, 7, a boss II, 8, a rotating shaft sleeve, 9, a lip seal ring, 10, a shell, 11, a stuffing box, 12, packing, 13, a water seal ring, 14, a gland, 15, a bolt, 16 and a rotating shaft.
Detailed Description
The invention is described in further detail below with reference to fig. 1-4.
The embodiment of the invention discloses a wear-reducing protection device for a rear guard plate of a slurry pump.
Referring to fig. 2, 3 and 4, the abrasion reducing protection device for the rear guard plate of the slurry pump comprises a rear guard plate 1, wherein an impeller 2 is arranged on the right side of the rear guard plate 1, a front boss 3 is arranged at the front part of the rear guard plate 1, a sealing ring 4 is arranged at a hub of the rear part of the impeller 2, the front boss 3 is matched with the sealing ring 4 for sealing, an auxiliary impeller 5 is arranged on the left side of the rear guard plate 1, two bosses 6 are protruded on the rear part of the rear guard plate 1 to form a groove structure, a boss two 7 is protruded on the front part of the auxiliary impeller 5, and the two bosses 6 and the boss two 7 are matched to form sealing.
Referring to fig. 2, a stuffing box 11 is arranged on the left side of the auxiliary impeller 5, a gap exists between the stuffing box 11 and the auxiliary impeller 5, a rotating shaft sleeve 8 is arranged on the inner side of the stuffing box 11, 2-5 packing rings 12 are arranged between the stuffing box 11 and the rotating shaft sleeve 8, a water seal ring 13 is arranged at a second packing ring 12 far away from the auxiliary impeller 5, a packing ring 12 is arranged on the right side of the water seal ring 13, a gland 14 is arranged on the left side of the stuffing box 11, and the gland 14 is in contact compression with the leftmost packing ring 12. Common filler materials include asbestos fabrics, carbon fibers, rubber, flexible graphite, engineering plastics, and the like, and are prefabricated into the form of packing 12 by using a multi-ring or spiral multi-layer structure.
Referring to fig. 2, three lip-shaped sealing rings 9 are arranged on the right side of the packing 12, the lip-shaped sealing rings 9 are sleeved on the rotating shaft sleeve 8, the lip-shaped sealing rings 9 are sequentially arranged, and the outer sides of the lip-shaped sealing rings 9 are in sealing connection with a stuffing box 11.
Referring to fig. 1 and 2, the casing 10 is arranged outside the rear guard plate 1, the rear guard plate 1 and the casing 10 are fixed through bolts 15, and the impeller 2 and the auxiliary impeller 5 are both wound on a rotating shaft 16 and rotate along with the rotating shaft 16.
In the prior art, a water seal ring 13 is arranged at the front side of a packing 12, a water inlet hole is communicated with the upper side of the water seal ring 13, and the water inlet hole obliquely penetrates through a stuffing box 11 to be communicated with the outside. Clear water enters from the water inlet hole and flows into a gap formed by the auxiliary impeller 5, the stuffing box 11 and the rear guard plate 1, so that slurry is diluted, meanwhile, the slurry is insufficiently sealed, large particles in the slurry enter a sealing side, and abrasion is improved. In the embodiment of the invention, the water seal ring 13 is arranged at the second packing 12 in the direction away from the auxiliary impeller 5, clean water enters from the upper part of the water seal ring 13, the packing 12 is arranged at the front side of the water seal ring 13 to separate the clean water from slurry, and the three lip seal rings 9 are further sealed.
The above embodiments are not intended to limit the scope of the invention, so that the equivalent changes of the structure, shape and principle of the invention are covered by the scope of the invention.
Claims (2)
1. A wear-reducing protection device for a rear guard plate of a slurry pump is characterized by comprising a rear guard plate (1), wherein an impeller (2) is arranged on the right side of the rear guard plate (1), a front boss (3) is arranged at the front part of the rear guard plate (1), a sealing ring (4) is arranged at a hub at the rear part of the impeller (2), the front boss (3) is matched and sealed with the sealing ring (4), an auxiliary impeller (5) is arranged on the left side of the rear guard plate (1), two bosses I (6) are protruded at the rear part of the rear guard plate (1) to form a groove structure, a boss II (7) is protruded at the front part of the auxiliary impeller (5), and the two bosses I (6) and the boss II (7) are matched and sealed;
The novel centrifugal impeller comprises an auxiliary impeller (5), wherein a stuffing box (11) is arranged on the left side of the auxiliary impeller (5), a gap exists between the stuffing box (11) and the auxiliary impeller (5), a rotating shaft sleeve (8) is arranged on the inner side of the stuffing box (11), 2-5 packing (12) are arranged between the stuffing box (11) and the rotating shaft sleeve (8), a water seal ring (13) is arranged at a second packing (12) in the direction away from the auxiliary impeller (5), a packing (12) is arranged on the right side of the water seal ring (13), a gland (14) is arranged on the left side of the stuffing box (11), and the gland (14) is in contact compression with the leftmost packing (12);
The right side of the packing (12) is provided with three lip-shaped sealing rings (9), the lip-shaped sealing rings (9) are sleeved on the rotating shaft sleeve (8), the lip-shaped sealing rings (9) are sequentially arranged, and the outer sides of the lip-shaped sealing rings (9) are in sealing connection with the stuffing box (11).
2. The abrasion-reducing protection device for the rear guard plate of the slurry pump is characterized in that a casing (10) is arranged on the outer side of the rear guard plate (1), the rear guard plate (1) and the casing (10) are fixed through bolts (15), and the impeller (2) and the auxiliary impeller (5) are both wound on a rotating shaft (16) and rotate along with the rotating shaft (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211516926.7A CN115750434B (en) | 2022-11-30 | 2022-11-30 | Wear protection device is fallen to sediment stuff pump backplate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211516926.7A CN115750434B (en) | 2022-11-30 | 2022-11-30 | Wear protection device is fallen to sediment stuff pump backplate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115750434A CN115750434A (en) | 2023-03-07 |
| CN115750434B true CN115750434B (en) | 2025-10-31 |
Family
ID=85341299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211516926.7A Active CN115750434B (en) | 2022-11-30 | 2022-11-30 | Wear protection device is fallen to sediment stuff pump backplate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115750434B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321452A (en) * | 2016-08-30 | 2017-01-11 | 成都市永益泵业有限公司 | Slurry pump |
| CN207178284U (en) * | 2017-08-31 | 2018-04-03 | 山东鑫海矿业技术装备股份有限公司 | A kind of Pulp pump prevents shaft sealing leakage device |
| CN213176168U (en) * | 2020-09-10 | 2021-05-11 | 宜兴市灵谷塑料设备有限公司 | Pump sealing device for conveying easily crystallized liquid |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001182686A (en) * | 1999-12-22 | 2001-07-06 | Furukawa Co Ltd | Shaft seal device of pump |
| CN203822648U (en) * | 2014-03-13 | 2014-09-10 | 石家庄远洋工业泵有限公司 | Heavy slurry pump |
| CN204941977U (en) * | 2015-08-28 | 2016-01-06 | 江苏新泰泵阀制造有限公司 | A kind of Horizontal slurry pump |
| CN206449002U (en) * | 2017-01-22 | 2017-08-29 | 襄阳五二五化工机械有限公司 | A kind of centrifugal pump Modified filler sealing structure |
| CN108343611A (en) * | 2017-01-22 | 2018-07-31 | 襄阳五二五化工机械有限公司 | A kind of slurry circulation pump being used for half water law phosphoric acid |
| WO2019202499A1 (en) * | 2018-04-16 | 2019-10-24 | Flsmidth A/S | Centrifugal seal with suction recirculation control for slurry pumps |
-
2022
- 2022-11-30 CN CN202211516926.7A patent/CN115750434B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321452A (en) * | 2016-08-30 | 2017-01-11 | 成都市永益泵业有限公司 | Slurry pump |
| CN207178284U (en) * | 2017-08-31 | 2018-04-03 | 山东鑫海矿业技术装备股份有限公司 | A kind of Pulp pump prevents shaft sealing leakage device |
| CN213176168U (en) * | 2020-09-10 | 2021-05-11 | 宜兴市灵谷塑料设备有限公司 | Pump sealing device for conveying easily crystallized liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115750434A (en) | 2023-03-07 |
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