CN220081733U - Novel bulb tubular pump semi-packing type sealing device - Google Patents
Novel bulb tubular pump semi-packing type sealing device Download PDFInfo
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- CN220081733U CN220081733U CN202321406998.6U CN202321406998U CN220081733U CN 220081733 U CN220081733 U CN 220081733U CN 202321406998 U CN202321406998 U CN 202321406998U CN 220081733 U CN220081733 U CN 220081733U
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- 238000007789 sealing Methods 0.000 title claims abstract description 94
- 238000012856 packing Methods 0.000 title claims abstract description 12
- 238000005253 cladding Methods 0.000 claims abstract description 101
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 56
- 230000032683 aging Effects 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a novel bulb tubular pump half-package type sealing device, which consists of an outer wrapping layer, an inner wrapping layer and a circular sphere, wherein the outer and inner portions of the sealing device are respectively formed by the outer wrapping layer, the inner wrapping layer and the circular sphere; the outer cladding is tightly connected with the inner cladding, the outer cladding and the inner cladding are circular ring-shaped pipeline, the outer cladding is made of polytetrafluoroethylene material, and the inner cladding is made of stainless steel material; the inner cladding layer is arranged in the outer cladding layer, and the inner wall of the outer cladding layer is tightly connected with the outer wall of the inner cladding layer; the round sphere is arranged in the inner wrapping layer; the outer cladding is provided with a plurality of grooves which are distributed and are communicated with the inside of the inner cladding by penetrating through the inner cladding wall of the inner cladding. The device can solve the problems of ageing and extrusion damage of the sealing ring, and reasonably prolongs the service life of the sealing ring. The sealing performance and stability of the sealing ring are improved by using the semi-packing sealing ring, the working problem of low pump station efficiency caused by pump body damage is solved, and the problem of oil leakage and water leakage of the bearing caused by aging and failure of sealing facilities can be effectively avoided.
Description
Technical Field
The utility model relates to a novel bulb tubular pump semi-packing type sealing device, and belongs to the technical fields of hydraulic engineering and municipal engineering.
Background
The bulb through-flow pump device has the advantages of smooth flow passage, small hydraulic loss, high device efficiency and the like compared with other device forms. In recent years, pump stations such as Jinhua station, huaian three station, huaiyin three station, sihong station, chinese iris dam and the like in south water North regulating engineering all adopt bulb tubular pump units, but because the bulb tubular pump has a complex structure, various faults and complex fault reasons, and the use and management experience of domestic pump station operation staff on the bulb tubular pump is still to be improved, the bulb tubular pump is also the most complex structure of the tubular pump. While many failures do not have serious consequences, sufficient attention should be paid to pump station service personnel. The pump shaft bearing fault of the bulb tubular pump unit is the most common fault, and the reasons of the faults are mainly bearing oil shortage, oil leakage, ageing damage of a sealing ring and the like, and the problems that a vane adjusting system is used for water inflow and a sealing groove is invalid are found in the existing practical pump station, so that oil is discharged from an inner cavity and an outer cavity of a servomotor, a large amount of water is leaked, and the inner wall of the outer cavity of the servomotor is severely corroded; river water flows into the interior of the pump station unit, the leakage amount of the shaft seal is large, the existing drainage pipeline cannot collect water normally, and water flow leaks from the bulb body to the ground, so that the safe operation of the pump station unit is seriously affected.
In order to alleviate the phenomena of water leakage, oil leakage and seal failure of the through-flow pump bearing, related patents relate to related measures: the patent CN202121509442.0 of the utility model of the application of authority provides a sealing device of a large-scale submerged tubular pump, which comprises a sealing section, a first flange, a second flange, a positioning circular ring, a sealing ring, a liquid guiding body and a steel ring; the sealing section is arranged to be a complete ring, so that the sealing structure is reduced, and the sealing performance and the convenience of sealing operation are improved; the first flange and the second flange are mutually pressed through the bolt connection, so that the sealing ring seals the gap between the positioning circular ring and the first flange, and water leakage can be effectively prevented. The utility model mainly provides a design development scheme suitable for mechanical connection sealing adopted by a submerged tubular pump, but the problem related to damage of a bearing sealing ring of a bulb tubular pump is not related. The patent CN201020255285.0 of the issued patent proposes that a mechanical seal is arranged on the outer side surface of the bearing seat, three framework oil seals are arranged in the mechanical seal, and a J-shaped sealing ring is embedded on the outer side of the mechanical seal. The improved sealing of the oil guide bearing can effectively prevent oil in the bearing from flowing into water, and can also effectively prevent water and sediment from entering the oil guide bearing, so that the problem of oil leakage of the bearing is reasonably solved, but the problems of ageing and damage repair of the sealing ring cannot be solved.
The prior patent mainly solves the problems of oil leakage and water leakage of the bearing by changing the structure of the sealing device, and has no patent disclosure on the mode method for prolonging the service life of the sealing ring for the emergency of aging, damage and the like of the sealing ring.
Disclosure of Invention
The utility model aims to solve the defects of the prior art, and provides a novel semi-packing type sealing device for a bulb tubular pump, which can improve the oil leakage and water leakage conditions of a bearing and solve the ageing problems of a sealing ring and improve the service life of the sealing ring.
In order to achieve the above object, the present utility model adopts the following technical scheme: a novel bulb tubular pump semi-packing type sealing device is characterized in that: the sealing device consists of an outer cladding, an inner cladding and a circular sphere, wherein the outer cladding, the inner cladding and the circular sphere are respectively arranged in the sealing device;
wherein the outer cladding layer is tightly connected with the inner cladding layer, the outer cladding layer and the inner cladding layer are both circular ring-shaped pipelines, the outer cladding layer is made of polytetrafluoroethylene material, and the inner cladding layer is made of stainless steel material; the inner cladding layer is arranged in the outer cladding layer, and the inner wall of the outer cladding layer is tightly connected with the outer wall of the inner cladding layer; the round sphere is arranged in the inner wrapping layer;
the outer cladding is provided with a plurality of grooves which are distributed and are communicated with the inside of the inner cladding by penetrating through the inner cladding wall of the inner cladding.
The number of slots is 3.
The groove is semi-wrapping, the cross section is semicircular, and the positions of the outer wrapping layer and the inner wrapping layer are consistent. The diameter of the circular sphere is slightly smaller than the inner diameter of the inner cladding, and the circular sphere can freely move in the inner cladding.
Let D be the inner diameter of the stainless steel inner cladding, D be the diameter of the small sphere, L be the width of the slotting part, i.e. L be the slot width of the slot; then:
D＝2d；
let R1 be polytetrafluoroethylene overcladding thickness, R2 be stainless steel inner cladding thickness; then:
R1＝R2；R1＝0.2d；R2＝0.2d。
a sealing method of a novel bulb tubular pump semi-packing type sealing device is characterized in that the sealing device is arranged in the bulb tubular pump device, specifically, the bulb tubular pump device comprises a bulb body and a motor arranged in the bulb body, one end of the water facing surface of the bulb body is provided with a rotating shaft extending hole, a guide bearing is fixedly arranged on the rotating shaft extending hole, a power output shaft of the motor penetrates out of the guide bearing, and an impeller is arranged on the rotating shaft penetrating out of one end of the guide bearing; when in installation, the sealing device is arranged between the rotating shaft of the motor and the inner ring of the guide bearing, the outer side outer wall of the outer wrapping layer of the sealing device is fixedly connected with the inner wall of the guide bearing in a sealing way, and the inner side outer wall of the outer wrapping layer of the sealing device is fixedly connected with the rotating shaft of the motor in a sealing way; when the motor is used, the motor is started, and the rotating shaft of the motor can rotate in the guide bearing; under the action of the sealing device, the external water is prevented from flowing into the bulb body;
after the sealing device works underwater for a period of time, water around the sealing device can infiltrate into the inner cladding through the grooves, and under the action of external water pressure, the inner circular ball body of the inner cladding is stressed to move in the inner cladding, so that on one hand, the effect of reducing the external water pressure can be achieved, the service life of the sealing device is prolonged, and on the other hand, when the external water pressure is uniform water pressure and enters the inner cladding of the sealing device from a plurality of grooved parts, the circular ball body presents autorotation under the action of the uniform water pressure; when the water pressure of a plurality of groove parts is inconsistent, the circular ball body moves from the high-pressure notch to the low-pressure notch under the action of uneven water pressure, so that the effect of balancing the water pressure is achieved, and the extrusion damage of the unbalanced water pressure to the sealing device is avoided.
The utility model has the advantages of simple structure, easy production and manufacture and convenient use, and the novel half-package type pipeline sealing device for the bulb tubular pump is adopted to effectively solve the emergency that the sealing ring is aged and damaged to cause oil leakage and water leakage of the bearing, and the like, and improve the service life of the bearing seal. Technical principle:
the device is a novel semi-wrapped pipeline sealing device, which consists of an outer wrapping layer, an inner wrapping layer and an inner sphere respectively from outside to inside. Wherein, the outer cladding is closely connected with the inner cladding, and the outer cladding is circular ring pipeline with the inner cladding, and the outer cladding adopts polytetrafluoroethylene material, and the inner cladding adopts stainless steel material, and the grooving is handled on inner cladding and the outer cladding outside surface, and reference fluting number is 3, and the fluting position is half packet formula, and the cross section is semi-circular, and outer cladding and inner cladding fluting position are unanimous. The round sphere is wrapped in the inner cladding, the round sphere is made of polytetrafluoroethylene materials, the diameter of the round sphere is consistent with the inner diameter of the inner cladding, and the fact that the round sphere can freely move in the inner cladding is met.
In general, after a period of time of working under water, a common sealing ring can corrode and age, and the phenomenon of sealing inaccuracy and water seepage begins to appear under the action of larger water pressure. The sealing device is provided with the three semicircular grooves, water around the sealing device can permeate into the inner cladding through the grooving parts, and under the action of external water pressure, the inner circular sphere of the inner cladding moves in the inner cladding under the action of the external water pressure, so that the effect of reducing the external water pressure can be achieved, and the service life of the sealing device can be prolonged. On the other hand, when the external water pressure is uniform water pressure, the water enters the sealing device from the three slotting positions, and the small balls perform autorotation under the action of the uniform water pressure; when the water pressure of the three slotting positions is inconsistent, the small ball moves from the high-pressure notch to the low-pressure notch under the action of uneven water pressure, so that the effect of balancing the water pressure is achieved, and the extrusion damage of the unbalanced water pressure to the sealing device is avoided.
The beneficial effects are that: the device can solve the problems of ageing and extrusion damage of the sealing ring, and reasonably prolongs the service life of the sealing ring. The sealing performance and stability of the sealing ring are improved by using the semi-packing sealing ring, the working problem of low pump station efficiency caused by pump body damage is solved, meanwhile, the problem of oil leakage and water leakage of the bearing caused by aging and failure of sealing facilities can be effectively avoided, and the economic benefit is improved.
Drawings
FIG. 1 is a block diagram of a bulb through-flow pump employing a novel bulb through-flow pump half-pack type sealing device;
FIG. 2 is a block diagram of a novel bulb tubular pump half-pack seal;
FIG. 3 is another directional block diagram of the novel bulb tubular pump half-pack type sealing device;
FIG. 4 is a cross-sectional view of the novel bulb through-flow pump half-pack type sealing device;
in the figure: 1 outer cladding, 2 inner cladding, 3 round sphere, 4 groove, 5 sealing device, 6 impeller, 7 guide vane.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
The novel bulb tubular pump half-packing type sealing device consists of an outer packing layer 1, an inner packing layer 2 and a circular sphere 3 respectively from outside to inside; wherein the outer cladding 1 is tightly connected with the inner cladding 2, the outer cladding 1 and the inner cladding 2 are circular ring-shaped pipelines, the outer cladding 1 is made of polytetrafluoroethylene material, and the inner cladding 2 is made of stainless steel material; the inner cladding 2 is arranged in the outer cladding 1, and the inner wall of the outer cladding 1 is tightly connected with the outer wall of the inner cladding 2; a circular sphere 3 is placed inside the inner cladding 2.
A plurality of grooves 4 are uniformly distributed on the outer cladding 1, and each groove 4 penetrates through the inner cladding wall of the inner cladding 2 and is communicated with the inner cladding 2.
Further, the number of the grooves 4 is 3, the grooves 4 are semi-wrapping, the cross section of each groove is semicircular, and the grooving positions of the outer cladding 1 and the inner cladding 2 are consistent. The diameter of the circular sphere 3 is slightly smaller than the inner diameter of the inner cladding 2, and the circular sphere 3 can freely move in the inner cladding 2. Let D be the inner diameter of the stainless steel inner cladding, D be the diameter of the small sphere, L be the width of the slotting part, i.e. L be the slot width of the slot 4; then:
D＝2d；
let R1 be polytetrafluoroethylene overcladding thickness, R2 be stainless steel inner cladding thickness; then:
R1＝R2；R1＝0.2d；R2＝0.2d。
when the bulb tubular pump device is used, the sealing device is arranged in the bulb tubular pump device, specifically, the bulb tubular pump device is a bulb tubular pump device which is common and existing at present, the bulb tubular pump device comprises a bulb body and a motor arranged in the bulb body, one end of the water facing surface of the bulb body is provided with a rotating shaft extending hole, a guide bearing is fixedly arranged on the rotating shaft extending hole, a power output shaft of the motor penetrates out of the guide bearing, and an impeller is arranged on the rotating shaft penetrating out of one end of the guide bearing; when in installation, the sealing device is arranged between the rotating shaft of the motor and the inner ring of the guide bearing, the outer side outer wall of the outer wrapping layer 1 of the sealing device is fixedly connected with the inner wall of the guide bearing in a sealing way, and the inner side outer wall of the outer wrapping layer 1 of the sealing device is fixedly connected with the rotating shaft of the motor in a sealing way; when the motor is used, the motor is started, and the rotating shaft of the motor can rotate in the guide bearing; under the action of the sealing device, the external water is prevented from flowing into the bulb body;
after the sealing device works underwater for a period of time, water around the sealing device can infiltrate into the inner cladding layer 2 through the grooves 4, the circular sphere 3 in the inner cladding layer 2 moves under the action of external water pressure, so that the sealing device can reduce the external water pressure on one hand, the service life of the sealing device is prolonged, and on the other hand, when the external water pressure is uniform water pressure and enters the inner cladding layer 2 of the sealing device from a plurality of grooved parts, the circular sphere 3 presents autorotation under the action of the uniform water pressure; when the water pressure at the positions of the grooves 4 is inconsistent, the circular ball 3 moves from the high-pressure notch to the low-pressure notch under the action of uneven water pressure, so that the effect of balancing the water pressure is achieved, and the extrusion damage of the unbalanced water pressure to the sealing device is avoided.
When in installation, the round sphere is firstly installed in the inner wrapping layer, and then the whole assembly is carried out. When in installation, the sealing device 5 is provided with 1 set on the water inlet side and the water outlet side of the impeller 6.
Claims (5)
1. A novel bulb tubular pump semi-packing type sealing device is characterized in that: the sealing device consists of an outer cladding layer (1), an inner cladding layer (2) and a circular sphere (3) which are respectively arranged on the outer side and the inner side;
wherein the outer cladding (1) is tightly connected with the inner cladding (2), the outer cladding (1) and the inner cladding (2) are circular ring-shaped pipelines, the outer cladding (1) is made of polytetrafluoroethylene materials, and the inner cladding (2) is made of stainless steel materials; the inner cladding (2) is arranged in the outer cladding (1), and the inner wall of the outer cladding (1) is tightly connected with the outer wall of the inner cladding (2); the round sphere (3) is arranged in the inner cladding (2);
a plurality of grooves (4) which are distributed on the outer cladding (1) are arranged.
2. The novel bulb through-flow pump half-package type sealing device according to claim 1, wherein the sealing device is characterized in that: the number of the grooves (4) is 3.
3. The novel bulb through-flow pump half-package type sealing device according to claim 1, wherein the sealing device is characterized in that: the groove (4) is semi-wrapping, the cross section is semicircular, and the grooving positions of the outer wrapping layer (1) and the inner wrapping layer (2) are consistent.
4. The novel bulb through-flow pump half-package type sealing device according to claim 1, wherein the sealing device is characterized in that:
the diameter of the circular sphere (3) is slightly smaller than the inner diameter of the inner cladding (2), and the circular sphere (3) can freely move in the inner cladding (2).
5. The novel bulb through-flow pump half-package type sealing device according to claim 1, wherein the sealing device is characterized in that: setting D as the inner diameter of the inner cladding (2) of stainless steel, D as the diameter of the circular sphere (3), L as the width of the slotting part, namely L as the slot width of the slot (4); then:
L=d；D=2d；
setting R1 as polytetrafluoroethylene outer cladding thickness, and R2 as stainless steel inner cladding (2) thickness; then:
R1= R2；R1=0.2d；R2=0.2d。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406998.6U CN220081733U (en) | 2023-06-05 | 2023-06-05 | Novel bulb tubular pump semi-packing type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406998.6U CN220081733U (en) | 2023-06-05 | 2023-06-05 | Novel bulb tubular pump semi-packing type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220081733U true CN220081733U (en) | 2023-11-24 |
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ID=88814224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321406998.6U Active CN220081733U (en) | 2023-06-05 | 2023-06-05 | Novel bulb tubular pump semi-packing type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220081733U (en) |
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2023
- 2023-06-05 CN CN202321406998.6U patent/CN220081733U/en active Active
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