CN218760461U - Vertical axial-flow pump that contains sand control function - Google Patents
Vertical axial-flow pump that contains sand control function Download PDFInfo
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- CN218760461U CN218760461U CN202222190317.9U CN202222190317U CN218760461U CN 218760461 U CN218760461 U CN 218760461U CN 202222190317 U CN202222190317 U CN 202222190317U CN 218760461 U CN218760461 U CN 218760461U
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Abstract
The utility model discloses a vertical axial-flow pump with sand prevention function, which comprises a stuffing box, a transmission shaft, a water outlet section, a guide vane body, a spherical chamber, a water inlet horn and an impeller; the transmission shaft sequentially penetrates through the stuffing box, the water outlet section, the guide vane body and the spherical chamber from top to bottom; the upper end of the water inlet horn is fixedly connected with the bottom end of the spherical chamber, the impeller is positioned in the spherical chamber, and the impeller is fixedly connected with the lower end of the transmission shaft; a sheath is arranged outside the transmission shaft; sheath) and the transmission shaft, and the flow channel is communicated with the upper end cavity and the inner cavity of the guide vane body (4). The middle section of the pump shaft is sleeved with the sheath, so that the space where the conveying medium enters the bearing is effectively blocked. The bearing is lubricated by municipal water supply with certain pressure, and the municipal water supply prevents sewage from entering a cavity where the bearing is located from the matching gap between the upper end of the impeller and the lower end of the guide vane body, so that the lubrication of the bearing is effectively protected, and the long-term safe operation of the pump is ensured.
Description
Technical Field
The utility model relates to a water pump technical field particularly, relates to a vertical axial-flow pump that contains sand control function.
Background
The vertical axial-flow pump has the advantages of high flow, low lift and high efficiency, and is widely applied to projects such as municipal drainage, sewage treatment, farmland drainage and irrigation, water conservancy and the like. The vertical axial-flow pump is composed of a motor and a pump body, as shown in figure 1, the pump body is assembled at the lower end of the motor, a transmission shaft of the pump body sequentially penetrates through a filler culvert, a water outlet section, a guide vane body, a spherical chamber and a water inlet horn from top to bottom, an impeller is arranged at the lower end of a pump shaft, bearing bodies with bearings are respectively arranged at two ends of the pump shaft, and the bearings are lubricated by conveying media.
However, the water contains certain sand grains and fiber substances, particularly, a large amount of particle solid substances are contained in the water in places such as rainwater pumping stations for municipal drainage, sewage treatment and the like, some sand grains and fine hairs inevitably enter between the bearing and the pump shaft, the pump shaft rotating at high speed is abraded by the sand grains and the fine fibers, and meanwhile, the bearing is also rapidly abraded, so that the vertical axial-flow pump generates vibration and water leakage, and the safe operation and the efficiency of the pump are seriously influenced.
Disclosure of Invention
The technical problem is as follows: the utility model discloses the technical problem that will solve is: the utility model provides a vertical axial-flow pump that contains sand control function can effectively prevent tiny sand grain and fibre class material to enter into the cavity at bearing place for bearing and pump shaft all can not produce the wearing and tearing phenomenon at the operation in-process, can not produce vibration and leak simultaneously, thereby guarantee vertical axial-flow pump's high-efficient operation.
The technical scheme is as follows: for solving the technical problem, the embodiment of the utility model provides an adopt technical scheme is:
a vertical axial-flow pump with a sand prevention function comprises a stuffing box, a transmission shaft, a water outlet section, a guide vane body, a spherical chamber, a water inlet horn and an impeller; the transmission shaft sequentially penetrates through the stuffing box, the water outlet section, the guide vane body and the spherical chamber from top to bottom; the water outlet section comprises a body containing a water inlet and a water outlet, and an upper end cavity positioned at the upper part of the body, and the upper end cavity is communicated with the inner cavity of the body; the stuffing box is fixedly connected with the upper end cavity of the water outlet section, the upper end of the guide vane body is fixedly connected with the bottom end of the water outlet section, the upper end of the spherical chamber is fixedly connected with the bottom end of the guide vane body, the upper end of the water inlet loudspeaker is fixedly connected with the bottom end of the spherical chamber, the impeller is positioned in the spherical chamber, and the impeller is fixedly connected with the lower end of the transmission shaft; a sheath is arranged outside the transmission shaft; a flow channel is formed between the sheath and the transmission shaft and is communicated with the upper end cavity and the inner cavity of the guide vane body.
As a preferred example, an upper bearing seat is arranged in an upper end cavity of the water outlet section; an upper bearing is arranged on the upper bearing seat; the inner cavity of the guide vane body is provided with a lower bearing seat; a lower bearing is arranged on the lower bearing seat; the upper end of the sheath is connected with the lower end of the upper bearing seat; the lower end of the sheath is connected with the upper surface of the guide vane body; the upper part of the transmission shaft is matched with the upper bearing, and the lower part of the transmission shaft is matched with the lower bearing.
As a preferable example, the sheath comprises a protection pipe and a protection plate; the protective pipe is positioned above the protective plate and is vertically arranged; the protective pipe is fixedly connected with the protective plate; the guard plate is fixedly connected with the surface of the guide vane body, and the shape of the guard plate is matched with that of the surface of the guide vane body.
As a preferable example, the inner cavity of the stuffing box is communicated with the upper end cavity.
Preferably, a sealing gasket is arranged between the guide vane body and the lower bearing seat.
Preferably, a first sealing element is arranged between the inner wall of the upper end of the sheath and the outer wall of the upper bearing seat.
Preferably, a second sealing element is arranged between the guard plate and the outer wall of the guide vane body.
As a preferred example, a water filling pipe and a packing layer are arranged in the packing box; when the water pump works, the water pressure in the water filling pipe is greater than the fluid pressure generated by the impeller; the packing layer is used for preventing water flow in the upper end cavity from overflowing upwards.
Preferably, the sheath is coaxially disposed with the drive shaft.
Preferably, the impeller and the wall surface of the inner cavity of the guide vane body are in clearance fit.
Has the advantages that: compared with the prior art, the technical scheme of the utility model following beneficial effect has: the utility model provides a pair of vertical axial-flow pump that contains sand control function establishes the sheath through the middle section position cover at the pump shaft, effectively cuts off the space that transport medium got into the bearing place, has guaranteed that the bearing operation in-process does not receive the influence of debris, has improved security and stability. Fill the water pipe through the setting, fill the water pipe and be connected with municipal water supply, because the lift of vertical axial-flow pump is lower, its pressure is less than the municipal water supply pressure who fills the water pipe for when the bearing can rely on the water that has certain pressure in filling the water pipe to lubricate, guarantee that sewage can't enter into the cavity at bearing place, effectively protect the lubrication of bearing, guarantee the long-term safe operation of pump.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a of the embodiment of the present invention.
The figure shows that: the water-feeding type water-saving impeller comprises a stuffing box 1, a transmission shaft 2, a water outlet section 3, a guide vane body 4, a spherical chamber 5, a water inlet horn 6, an impeller 7, a lower bearing 8, a lower bearing seat 9, a second sealing element 10, a sheath 11, a first sealing element 12, an upper bearing 13, an upper bearing seat 14, a water filling pipe 15, a stuffing layer 16 and a protection plate 111.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the vertical axial-flow pump with sand prevention function according to the embodiment of the present invention comprises a stuffing box 1, a transmission shaft 2, a water outlet section 3, a guide vane body 4, a spherical chamber 5, a water inlet horn 6 and an impeller 7; the transmission shaft 2 sequentially penetrates through the stuffing box 1, the water outlet section 3, the guide vane body 4 and the spherical chamber 5 from top to bottom; the water outlet section 3 comprises a body containing a water inlet and a water outlet, and an upper end cavity positioned at the upper part of the body, and the upper end cavity is communicated with the inner cavity of the body; the stuffing box 1 is fixedly connected with the upper end cavity of the water outlet section 3, the upper end of the guide vane body 4 is fixedly connected with the bottom end of the water outlet section 3, the upper end of the spherical chamber 5 is fixedly connected with the bottom end of the guide vane body 4, the upper end of the water inlet loudspeaker 6 is fixedly connected with the bottom end of the spherical chamber 5, the impeller 7 is positioned in the spherical chamber 5, and the impeller 7 is fixedly connected with the lower end of the transmission shaft 2; a sheath 11 is arranged outside the transmission shaft 2; a flow channel is formed between the sheath 11 and the transmission shaft 2 and is communicated with the upper end cavity and the inner cavity of the guide vane body 4.
In the vertical axial-flow pump that contains sand control function of above-mentioned structure, through setting up sheath 11, effectual separation debris in aqueous enter into the bearing through the device clearance inside, at the operation in-process, the bearing operation can not influenced by aquatic debris, guarantee the stability and the operation effect of device operation, set up simultaneously and fill the water pipe, make at the drainage in-process, pressure is greater than external pressure, make sewage can not enter into the bearing when lubricating the bearing, the operation of bearing can not be influenced to the particulate matter in the sewage, and then whole device's long-term safe operation has been guaranteed.
Before the vertical axial-flow pump operates, the water filling pipe 15 is continuously filled with water, and the water enters the cavity of the stuffing box 1 through the water filling pipe 15. The water in the stuffing box 1 enters the sheath 11, the water in the sheath 11 enters the inner cavity from the upper end opening of the inner cavity of the guide vane body 4, and the water in the inner cavity of the guide vane body 4 enters the hub cavity of the impeller 7. Therefore, the bearings are all in the environment without impurities and particles, and the operation safety is improved. After the axial-flow pump is started, the water in the water filling pipe 15 can continuously lubricate the bearing, so that the running effect of the bearing is better. Meanwhile, in the operation process of the axial flow pump, the packing layer 16 ensures that water from the water filling pipe 15 cannot overflow from the upper part and enters the cavity where the lower bearing is located after passing through the sheath 11 and the guide vane body 4, and the first sealing element 12 and the second sealing element 10 also ensure that the water from the water filling pipe 15 cannot leak from the upper end and the lower end of the sheath 11, so that the operation environment of the bearing is further improved, and the safety of long-term operation of the pump is further ensured. The water in the cavity of the lower bearing overflows through the gap between the impeller 7 and the wall surface of the inner cavity of the guide vane body 4. Thus, the water filling pipe 15 can continuously supply water.
As a preferable example, an upper bearing seat 14 is arranged in a cavity at the upper end of the water outlet section 3; the upper bearing seat 14 is provided with an upper bearing 13; the inner cavity of the guide vane body 4 is provided with a lower bearing seat 9; the lower bearing seat 9 is provided with a lower bearing 8; the upper end of the sheath 11 is connected with the lower end of the upper bearing seat 14; the lower end of the sheath 11 is connected with the upper surface of the guide vane body 4; the upper part of the transmission shaft 2 is matched with the upper bearing 13, and the lower part of the transmission shaft 2 is matched with the lower bearing 8. The transmission shaft 2 is matched with the upper bearing 13 and the lower bearing 8, and when the transmission shaft is in work, water in the water filling pipe 15 can lubricate the upper bearing 13 through water in the sheath 11 on the outer side of the transmission shaft 2. Meanwhile, water moves downwards and flows into a cavity where the hub of the impeller 7 is located through the guide vane body 4, the lower bearing 8 is lubricated by the water in the guide vane body cavity, and stable and safe operation of the device is guaranteed.
As a preferred example, the sheath 11 includes a protection tube and a protection plate 111; the protection pipe is positioned above the guard plate 111 and is vertically arranged; the protective pipe is fixedly connected with the protective plate 111; the guard plate 111 is fixedly connected with the surface of the guide vane body 4, and the shape of the guard plate 111 is matched with the shape of the surface of the guide vane body 4. The vertical setting of pillar can guarantee the even downstream of water in the water pipe 15 that fills, when backplate 111 shape and guide vane body 4 surface shape fit, guaranteed that sheath 11 can not take place the deflection and the removal of position when fixing at the guide vane body surface.
As a preferable example, the inner cavity of the stuffing box 1 is communicated with the upper end cavity. The water in the water filling pipe 15 can flow from top to bottom through the communicated cavities, so that the upper bearing 13 and the lower bearing 8 are lubricated and impurities in sewage are prevented from entering.
Preferably, a sealing gasket is arranged between the guide vane body 4 and the lower bearing seat 9. Ensuring that the conveying medium cannot enter the sheath 11 from the guide vane body 4. The conveying medium can not enter the guide vane body 4 and the sheath 11 from the lower end, and sand grains and fiber substances of any specification can not enter the sheath 11, so that the lubricating effect of the bearing is ensured.
Preferably, a first sealing element 12 is arranged between the inner wall of the upper end of the sheath 11 and the outer wall of the upper bearing seat 14. The first seal 12 seals the upper part of the jacket 11 radially to the upper bearing seat 14, where the jacket 11 is sealed, so that sand and fibre material in the transport medium cannot enter the jacket 11, thereby ensuring the lubricating effect of the bearing.
Preferably, a second sealing member 10 is disposed between the guard plate 111 and the outer wall of the guide vane body 4. The second sealing element 10 cuts off the mutual permeation of the internal and external media of the sheath 11, so that the conveying media cannot enter the sheath 11 from the lower end of the sheath 11, and the municipal water supply in the sheath 11 cannot leak out from the lower end of the sheath, thereby ensuring that the upper and lower bearings are always in a lubrication state of the water body in the water filling pipe 15, and the particles and fiber impurities cannot enter the working space of the bearings.
As a preferable example, a water filling pipe 15 and a packing layer 16 are arranged in the packing box 1; when the device works, the water pressure in the water filling pipe 15 is greater than the fluid pressure generated by the impeller 7; the packing layer 16 is used for preventing water flow in the upper end cavity from overflowing upwards. The water filling pipe 15 is connected with municipal water supply, and the vertical axial flow pump has lower lift and lower pressure than the municipal water supply, so that the municipal water supply can effectively prevent the conveyed sewage from entering the sheath, the bearing is lubricated in a better medium, and the stable operation of the axial flow pump is ensured. At the same time, the municipal water supply does not overflow from the top of the stuffing box 1 due to the packing layer 16. The packing layer 16 is fixed in the stuffing box 1 by a cover. The water outlet of the water filling pipe 15 is positioned below the packing layer 16. This ensures the normal operation of the vertical axial flow pump.
Preferably, the sheath 11 is arranged coaxially with the drive shaft 2. This makes the water body evenly distributed in the pillar around transmission shaft 2, fully lubricates the bearing.
Preferably, the impeller 7 is in clearance fit with the wall surface of the inner cavity of the guide vane body 4. When the water-filling device works, water in the water-filling pipe 15 is continuously conveyed to the upper end cavity of the upper part of the body, and because the water pressure in the water-filling pipe 15 is greater than the water pressure generated by the impeller 7, the upper bearing 13 and the lower bearing 8 are lubricated, and impurities are prevented from entering the bearings. In addition, the water in the water filling pipe 15 cannot damage the device because the water is filled in the cavity, and the safety of the device during working is ensured.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the details of the foregoing embodiments, which have been described in order to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which are intended to be within the scope of the invention as claimed. The scope of the invention is defined by the claims and their equivalents.
Claims (10)
1. A vertical axial-flow pump with a sand prevention function is characterized by comprising a stuffing box (1), a transmission shaft (2), a water outlet section (3), a guide vane body (4), a spherical chamber (5), a water inlet horn (6) and an impeller (7); the transmission shaft (2) sequentially penetrates through the stuffing box (1), the water outlet section (3), the guide vane body (4) and the spherical chamber (5) from top to bottom; the water outlet section (3) comprises a body containing a water inlet and a water outlet, and an upper end cavity positioned at the upper part of the body, and the upper end cavity is communicated with the inner cavity of the body; the stuffing box (1) is fixedly connected with the upper end cavity of the water outlet section (3), the upper end of the guide vane body (4) is fixedly connected with the bottom end of the water outlet section (3), the upper end of the spherical chamber (5) is fixedly connected with the bottom end of the guide vane body (4), the upper end of the water inlet horn (6) is fixedly connected with the bottom end of the spherical chamber (5), the impeller (7) is positioned in the spherical chamber (5), and the impeller (7) is fixedly connected with the lower end of the transmission shaft (2); a sheath (11) is arranged outside the transmission shaft (2); a flow channel is formed between the sheath (11) and the transmission shaft (2), and the flow channel is communicated with the upper end cavity and the inner cavity of the guide blade body (4).
2. The vertical axial-flow pump with the sand control function according to claim 1, characterized in that an upper bearing seat (14) is arranged in the upper end cavity of the water outlet section (3); an upper bearing (13) is arranged on the upper bearing seat (14); the inner cavity of the guide vane body (4) is provided with a lower bearing seat (9); a lower bearing (8) is arranged on the lower bearing seat (9); the upper end of the sheath (11) is connected with the lower end of the upper bearing seat (14); the lower end of the sheath (11) is connected with the upper surface of the guide vane body (4); the upper part of the transmission shaft (2) is matched with the upper bearing (13), and the lower part of the transmission shaft (2) is matched with the lower bearing (8).
3. The vertical axial flow pump with sand control function according to claim 1, characterized in that the sheath (11) comprises a protection tube and a guard plate (111); the protective pipe is positioned above the protective plate (111) and is vertically arranged; the protective pipe is fixedly connected with the protective plate (111); the guard plate (111) is fixedly connected with the surface of the guide vane body (4), and the shape of the guard plate (111) is matched with the shape of the surface of the guide vane body (4).
4. The vertical axial flow pump with the sand control function according to claim 1, characterized in that the inner cavity of the stuffing box (1) is communicated with the upper end cavity.
5. The vertical axial flow pump with the sand control function according to claim 2, wherein a sealing gasket is arranged between the guide vane body (4) and the lower bearing seat (9).
6. The vertical axial flow pump with the sand control function according to claim 3, wherein a first sealing element (12) is arranged between the inner wall of the upper end of the sheath (11) and the outer wall of the upper bearing seat (14).
7. The vertical axial flow pump with the sand control function according to claim 3, wherein a second sealing element (10) is arranged between the guard plate (111) and the outer wall of the guide vane body (4).
8. The vertical axial flow pump with the sand control function according to claim 1, characterized in that a water filling pipe (15) and a packing layer (16) are arranged in the packing box (1); when the device works, the water pressure in the water filling pipe (15) is greater than the fluid pressure generated by the impeller (7); the packing layer (16) is used for preventing water flow in the upper end cavity from overflowing upwards.
9. The vertical axial flow pump with the sand control function according to claim 1, wherein the sheath (11) is coaxially arranged with the transmission shaft (2).
10. The vertical axial flow pump with the sand control function according to claim 1, wherein the impeller (7) is in clearance fit with the wall surface of the inner cavity of the guide vane body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222190317.9U CN218760461U (en) | 2022-08-19 | 2022-08-19 | Vertical axial-flow pump that contains sand control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222190317.9U CN218760461U (en) | 2022-08-19 | 2022-08-19 | Vertical axial-flow pump that contains sand control function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218760461U true CN218760461U (en) | 2023-03-28 |
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ID=85691835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222190317.9U Active CN218760461U (en) | 2022-08-19 | 2022-08-19 | Vertical axial-flow pump that contains sand control function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218760461U (en) |
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2022
- 2022-08-19 CN CN202222190317.9U patent/CN218760461U/en active Active
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