CN211423022U - Single-stage single-suction cantilever type chemical centrifugal pump - Google Patents
Single-stage single-suction cantilever type chemical centrifugal pump Download PDFInfo
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- CN211423022U CN211423022U CN201921944569.8U CN201921944569U CN211423022U CN 211423022 U CN211423022 U CN 211423022U CN 201921944569 U CN201921944569 U CN 201921944569U CN 211423022 U CN211423022 U CN 211423022U
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Abstract
The utility model is suitable for a centrifugal pump technical field provides a cantilever type chemical centrifugal pump is inhaled to single-stage list, include: the pump comprises a motor, a cantilever bracket and a pump body; the output end of the motor is in transmission connection with a main shaft, and the main shaft penetrates through the cantilever support and extends to an inner cavity of the pump body to be fixed with the impeller bolt; a bearing is sleeved inside the cantilever support and positioned on the outer wall of the main shaft; a mechanical seal is sleeved on the outer wall of the main shaft inside the pump body; an end cover is fixed at the joint of the pump body and the cantilever support through a bolt; and a sealing ring is sleeved on the outer wall of the main shaft inside the pump body and between the flow channel and the impeller. The utility model discloses in, this single-stage single suction cantilever type chemical centrifugal pump can reduce the operating temperature of main shaft and mechanical seal junction in the continuous leading-in cooling bath of external coolant liquid circulation through the cooling bath of the circulation business turn over that sets up, ensure that the main shaft can be stable for a long time be in the low temperature state, prevent that the centrifugal pump from taking place the phenomenon of high temperature trouble.
Description
Technical Field
The utility model belongs to the technical field of the centrifugal pump, especially, relate to a cantilever type chemical centrifugal pump is inhaled to single-stage list.
Background
The single-stage single-suction centrifugal pump adopts the most advanced hydraulic model, is designed according to the performance parameters of the is-type centrifugal pump and the unique structure combination of the vertical pump, and is strictly designed and manufactured according to international iso2858, and the hard alloy mechanical sealing device is selected for the shaft seal of the product, so that the single-stage single-suction centrifugal pump has the characteristics of high efficiency, energy conservation, reliable performance, convenience in installation and use and the like, and can be used for carrying out centrifugal conveying of liquid in the liquid conveying process of the chemical industry, thereby improving the production efficiency of the chemical industry.
The single-stage single-suction cantilever type centrifugal pump on the market at present can produce a large amount of work heats in main shaft and mechanical seal department after long-time high-speed operation, because the radiating mode of traditional mechanical seal is relatively inefficient, only can carry out slow heat dissipation to partial work heat, lead to a large amount of heats in main shaft and mechanical seal department to be difficult to quick the scattering and disappearing, and then cause the phenomenon of mechanical seal high temperature fast ageing even trouble easily, be unfavorable for the long-term operation safety of single-stage single-suction cantilever type centrifugal pump.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cantilever type chemical centrifugal pump is inhaled to single-stage list aims at solving traditional mechanical seal's heat dissipation mode low efficiency relatively, only can carry out slow heat dissipation to part work heat, leads to the difficult quick scattering and disappearing of a large amount of heats of main shaft and mechanical seal department, and then causes the problem of the phenomenon of mechanical seal high temperature fast ageing even trouble easily.
The utility model discloses a realize like this, a cantilever type chemical centrifugal pump is inhaled to single-stage list, include: the pump comprises a motor, a cantilever bracket and a pump body;
a junction box is fixed on the outer wall of the motor through bolts;
the output end of the motor is in transmission connection with a main shaft, and the main shaft penetrates through the cantilever support and extends to an inner cavity of the pump body to be fixed with the impeller bolt;
a flow passage is formed in the pump body;
a bearing is sleeved inside the cantilever support and positioned on the outer wall of the main shaft;
a mechanical seal is sleeved on the outer wall of the main shaft inside the pump body;
an end cover is fixed at the joint of the pump body and the cantilever support through a bolt;
and a sealing ring is sleeved on the outer wall of the main shaft inside the pump body and between the flow channel and the impeller.
Preferably, the waterproof ring is further included;
the waterproof ring is embedded in the inner wall of the mechanical seal;
the inner wall of the waterproof ring is embedded with water.
Preferably, the device also comprises a cooling tank;
the cooling groove is formed in the mechanical seal;
the outer wall of the mechanical seal and the inlet end of the cooling tank are communicated with a liquid inlet pipe which extends outwards;
the outer wall of the mechanical seal and the outlet end of the cooling tank are communicated with a liquid outlet pipe which extends outwards;
and heat dissipation holes are formed in the inner wall of the mechanical seal and positioned on the inner side of the waterproof ring.
Preferably, the impeller consists of a wheel disc, blades and a clamping ring;
the clamping ring is positioned in the middle of the wheel disc, and the blades are arranged on the outer wall of the wheel disc and positioned on the outer side of the clamping ring;
the number of the blades is six, the cross sections of the six blades are all arc-shaped structures, and the bending directions of the blades are all consistent.
Preferably, the sealing ring consists of an outer ring and an inner ring;
the outer wall of the outer ring is provided with an assembly groove, and the outer wall of the inner ring is provided with an assembly block;
and the outer ring and the inner ring are assembled and connected through the embedded clamping connection of the assembling groove and the assembling block.
Preferably, the rubber ring is further included;
the rubber ring is embedded in the outer wall of the inner ring;
the diameter of the outer wall of the rubber ring is consistent with that of the outer wall of the inner ring;
the diameter of the inner wall of the rubber ring is consistent with that of the inner wall of the main shaft.
Compared with the prior art, the beneficial effects of the utility model are that: the single-stage single-suction cantilever type chemical centrifugal pump can continuously guide the externally-connected cooling liquid into the cooling tank by the structure of the arranged cooling tank and the liquid inlet pipe and the liquid outlet pipe, efficiently absorb the heat generated when the centrifugal pump runs at high speed, thereby reducing the working temperature of the joint of the main shaft and the mechanical seal, reducing the use wear degree of the mechanical seal under high-temperature environment, ensuring that the main shaft can be stably in a low-temperature state for a long time, preventing the centrifugal pump from high-temperature failure, on the other hand, adopting the sealing ring with an assembly structure, facilitating the rapid disassembly and assembly operation of the sealing ring, flexibly and conveniently maintaining and replacing the damaged part of the sealing ring after the sealing ring is excessively worn, avoiding the integral replacement of the sealing ring, and reducing the use cost of the centrifugal pump, the use effect of the centrifugal pump is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a single-stage single-suction cantilever type chemical centrifugal pump provided by the present invention;
FIG. 2 is a schematic cross-sectional view of a mechanical seal according to the present invention;
FIG. 3 is a schematic cross-sectional view of an impeller according to the present invention;
fig. 4 is a schematic cross-sectional structure diagram of the middle seal ring of the present invention.
In the figure: 1. a motor; 2. a bearing; 3. a cantilever support; 4. mechanical sealing; 41. a liquid inlet pipe; 42. a cooling tank; 43. a waterproof ring; 44. heat dissipation holes; 45. a liquid outlet pipe; 5. a pump body; 6. an impeller; 61. a wheel disc; 62. a blade; 63. a snap ring; 7. a flow channel; 8. a seal ring; 81. an outer ring; 811. assembling a groove; 82. an inner ring; 821. assembling the block; 822. a rubber ring; 9. an end cap; 10. a main shaft; 11. a junction box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-4, the present invention provides a technical solution: a single-stage single-suction cantilever type chemical centrifugal pump comprises: the device comprises a motor 1, a cantilever bracket 3 and a pump body 5;
a junction box 11 is fixed on the outer wall of the motor 1 through bolts;
the output end of the motor 1 is connected with a main shaft 10 in a transmission manner, and the main shaft 10 penetrates through the cantilever support 3 and extends to the inner cavity of the pump body 5 to be fixed with the impeller 6 through bolts;
a flow passage 7 is formed in the pump body 5;
a bearing 2 is sleeved inside the cantilever support 3 and positioned on the outer wall of the main shaft 10;
a mechanical seal 4 is sleeved inside the pump body 5 and positioned on the outer wall of the main shaft 10;
an end cover 9 is fixed at the joint of the pump body 5 and the cantilever support 3 through bolts;
a sealing ring 8 is sleeved on the outer wall of a main shaft 10 which is positioned between the flow channel 7 and the impeller 6 and inside the pump body 5;
In this embodiment, when using, connect the external power control circuit to with terminal box 11 through external wire, control the operating condition of motor 1, the inlet outlet end of the pump body 5 carries out the bolt fastening with external chemical pipeline respectively, switch on the flow space of runner 7, cantilever 3 bolt fastening is in the place of using, when motor 1 starts, motor 1 can drive main shaft 10 and rotate, main shaft 10 is connected under the rotation of bearing 2 this moment, the impeller 6 in the synchronous drive pump body 5 rotates, and impeller 6 produces powerful negative pressure appeal under the high-speed rotation of blade 62, inhale chemical industry liquid in the runner 7, and under the centrifugal action of impeller 6, flow from the exit end of runner 7, and then realized the centrifugal drive effect to chemical industry liquid.
Further, still include waterproof ring 43, waterproof ring 43 inlays and establishes the inner wall at mechanical seal 4, and waterproof ring 43's inner wall inlays and is equipped with the water-swelling sealing rod, and the inner wall diameter of water-swelling sealing rod is unanimous with the outer wall diameter size of main shaft 10.
In this embodiment, the waterproof ring 43 is matched with the combined structure of the water-swelling water stop strip, so that the water-swelling water stop strip swells when contacting liquid, thereby further sealing and filling the gap at the joint of the waterproof ring 43 and the main shaft 10, and preventing the liquid in the flow passage 7 from flowing outwards along the main shaft 10 to cause water seepage.
Further, the mechanical sealing device further comprises a cooling groove 42, the cooling groove 42 is arranged inside the mechanical sealing 4, an inlet end of the outer wall of the mechanical sealing 4, which is located at the cooling groove 42, is communicated with a liquid inlet pipe 41 which extends outwards, an outlet end of the outer wall of the mechanical sealing 4, which is located at the cooling groove 42, is communicated with a liquid outlet pipe 45 which extends outwards, and a heat dissipation hole 44 is formed in the inner wall of the mechanical sealing 4, which is located at the inner side of the waterproof ring 43.
In this embodiment, through the cooling bath 42 that sets up, the structure of cooperation feed liquor pipe 41 and drain pipe 45, can be with the continuous leading-in cooling bath 42 of external coolant liquid circulation, the heat that produces when the centrifugal pump runs at a high speed this moment can enter into mechanical seal 4 through louvre 44 in, and carry out efficient absorption processing by the coolant liquid in cooling bath 42, thereby reduce the operating temperature of main shaft 10 and mechanical seal 4 junction, reduce the degree of wear of mechanical seal 4 under high temperature environment, in order to ensure that main shaft 10 can be stable for a long time be in the low temperature state, prevent that the centrifugal pump from taking place the phenomenon of high temperature trouble.
Further, the sealing ring 8 is composed of an outer ring 81 and an inner ring 82, wherein an assembling groove 811 is formed on the outer wall of the outer ring 81, an assembling block 821 is arranged on the outer wall of the inner ring 82, and the outer ring 81 and the inner ring 82 are assembled and connected through the embedded clamping of the assembling groove 811 and the assembling block 821.
In this embodiment, the sealing ring 8 of assembled structure conveniently carries out quick dismouting operation to sealing ring 8 to excessive wearing and tearing back appears in sealing ring 8, can be nimble convenient outer loop 81 or the interior ring 82 part of damage on sealing ring 8 maintain change the processing, need not to carry out holistic change to sealing ring 8, reduced the use cost of centrifugal pump, improved the result of use of centrifugal pump.
Further, still include rubber circle 822, rubber circle 822 inlays the outer wall of establishing in inner ring 82, and the outer wall diameter of rubber circle 822 is unanimous with the outer wall diameter size of inner ring 82, and the inner wall diameter of rubber circle 822 is unanimous with the inner wall diameter size of main shaft 10.
In the embodiment, not only can the connection part of the sealing ring 8 and the main shaft 10 be protected in a sealing manner, but also the noise generated when the main shaft 10 rotates at a high speed can be reduced, so that the noise pollution of the centrifugal pump is reduced, and the operation silencing effect of the centrifugal pump is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a single-stage single suction cantilever type chemical centrifugal pump which characterized in that includes: the device comprises a motor (1), a cantilever support (3) and a pump body (5);
a junction box (11) is fixed on the outer wall of the motor (1) through bolts;
the output end of the motor (1) is in transmission connection with a main shaft (10), and the main shaft (10) penetrates through the cantilever support (3) and extends to the inner cavity of the pump body (5) to be fixed with the impeller (6) through bolts;
a flow channel (7) is formed in the pump body (5);
a bearing (2) is sleeved inside the cantilever support (3) and positioned on the outer wall of the main shaft (10);
a mechanical seal (4) is sleeved on the outer wall of the main shaft (10) and inside the pump body (5);
an end cover (9) is fixed at the joint of the pump body (5) and the cantilever support (3) through bolts;
and a sealing ring (8) is sleeved on the outer wall of the main shaft (10) which is positioned between the flow channel (7) and the impeller (6) and inside the pump body (5).
2. A single-stage, single-suction cantilever chemical centrifugal pump as claimed in claim 1, wherein: also comprises a waterproof ring (43);
the waterproof ring (43) is embedded in the inner wall of the mechanical seal (4);
the inner wall of the waterproof ring (43) is embedded with a water-swelling water stop bar, and the diameter of the inner wall of the water-swelling water stop bar is consistent with that of the outer wall of the main shaft (10).
3. A single-stage, single-suction cantilever chemical centrifugal pump as claimed in claim 1, wherein: further comprising a cooling tank (42);
the cooling groove (42) is arranged in the mechanical seal (4);
the outer wall of the mechanical seal (4) and the inlet end of the cooling tank (42) are communicated with a liquid inlet pipe (41) which extends outwards;
the outer wall of the mechanical seal (4) and the outlet end of the cooling groove (42) are communicated with a liquid outlet pipe (45) which extends outwards;
and heat dissipation holes (44) are formed in the inner wall of the mechanical seal (4) and positioned on the inner side of the waterproof ring (43).
4. A single-stage, single-suction cantilever chemical centrifugal pump as claimed in claim 1, wherein: the impeller (6) consists of a wheel disc (61), blades (62) and a clamping ring (63);
the clamping ring (63) is located in the middle of the wheel disc (61), and the blades (62) are arranged on the outer wall of the wheel disc (61) and located on the outer side of the clamping ring (63);
the number of the blades (62) is six, the cross sections of the six blades (62) are arc-shaped structures, and the bending directions of the blades are consistent.
5. A single-stage, single-suction cantilever chemical centrifugal pump as claimed in claim 1, wherein: the sealing ring (8) consists of an outer ring (81) and an inner ring (82);
wherein, the outer wall of the outer ring (81) is provided with an assembling groove (811), and the outer wall of the inner ring (82) is provided with an assembling block (821);
the outer ring (81) is assembled and connected with the inner ring (82) through the embedded clamping connection of the assembling groove (811) and the assembling block (821).
6. The single-stage single-suction cantilever type chemical centrifugal pump of claim 5, wherein: also comprises a rubber ring (822);
the rubber ring (822) is embedded in the outer wall of the inner ring (82);
the diameter of the outer wall of the rubber ring (822) is consistent with that of the outer wall of the inner ring (82);
the diameter of the inner wall of the rubber ring (822) is consistent with that of the inner wall of the main shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944569.8U CN211423022U (en) | 2019-11-12 | 2019-11-12 | Single-stage single-suction cantilever type chemical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944569.8U CN211423022U (en) | 2019-11-12 | 2019-11-12 | Single-stage single-suction cantilever type chemical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211423022U true CN211423022U (en) | 2020-09-04 |
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ID=72288641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921944569.8U Active CN211423022U (en) | 2019-11-12 | 2019-11-12 | Single-stage single-suction cantilever type chemical centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211423022U (en) |
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2019
- 2019-11-12 CN CN201921944569.8U patent/CN211423022U/en active Active
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