CN213540827U - Impeller for rotary jet pump - Google Patents
Impeller for rotary jet pump Download PDFInfo
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- CN213540827U CN213540827U CN202021866274.6U CN202021866274U CN213540827U CN 213540827 U CN213540827 U CN 213540827U CN 202021866274 U CN202021866274 U CN 202021866274U CN 213540827 U CN213540827 U CN 213540827U
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- impeller
- runner
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- flow channel
- jet pump
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Abstract
The invention relates to an impeller for a rotary jet pump, which comprises a wheel disc, wherein the center of the wheel disc is provided with a through hole, the left side surface of the wheel disc is provided with a plurality of flow passages, the left side surface of the wheel disc is provided with a cover plate, and a throttling ring is embedded in the cover plate. The impeller flow channel is improved, so that the energy conversion efficiency of liquid in the impeller flow channel is improved; the cross section of the flow passage of the impeller is designed into a rectangle, so that the processing and the manufacturing are convenient, the smooth finish of the inner surface of the flow passage is ensured, and the diffusion loss and the friction loss of liquid in the flow passage are reduced; the throttling ring with the spiral groove is arranged at the inner hole of the impeller cover plate, so that the local loss of the pump is reduced; the impeller is made of carbon fiber materials, is corrosion-resistant and light in weight, reduces the loading force borne by the bearing, and prolongs the service life of equipment.
Description
Technical Field
The utility model relates to an impeller for rotatory jet pump belongs to fluid machinery technical field.
Background
The rotary jet pump is a general mechanical device for conveying fluid, and an impeller of the rotary jet pump is one of the most central components, so the design and manufacture of the impeller directly influence the operation condition of the pump.
Disclosure of Invention
According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: the impeller for the rotary jet pump improves the hydraulic power of a flow passage, increases the energy conversion rate of liquid in the flow passage of the impeller and improves the operation efficiency of equipment.
An impeller for rotatory jet pump, offer the rim plate of through-hole including the center, along radially seting up the runner that a plurality of is used for carrying liquid on the left surface of rim plate, every runner all extends to the edge of rim plate from the through-hole of rim plate, is provided with the apron that closely laminates with the rim plate on the left surface of rim plate, and the through-hole of being convenient for wear the dress is seted up at the center of apron, its characterized in that: a throttling ring is embedded in the through hole of the cover plate.
Preferably, the runners are uniformly distributed on the left side face of the wheel disc, and each runner is formed by mutually communicating a runner inlet section, a runner transition section and a runner outlet section.
Preferably, the inner hole of the throttling ring is a taper hole with a large left end and a small right end, and a spiral groove for throttling is formed in the taper hole.
Further preferably, the excircle of the cover plate is matched with the wheel disc in a tongue-and-groove manner, a certain included angle theta is formed between the binding surface of the wheel disc corresponding to the inlet section of the flow channel and the cover plate and the vertical direction, and the included angle theta is 4-8 degrees.
Preferably, the inlet section of the flow channel is arc-shaped, the inlet installation angle is beta 1, and the value of beta 1 is 40-60 degrees generally; the outlet section of the flow channel is linear, the outlet installation angle is beta 2, and the value of the beta 2 is usually 80-90 degrees; the flow passage transition section is arc-shaped, one end of the flow passage transition section is communicated with the flow passage inlet section, and the other end of the flow passage transition section is communicated with the flow passage outlet section.
Preferably, the length of the inlet section of the flow channel is 1/3-2/5 of the total length of the flow channel, the length of the transition section of the flow channel is 1/5-1/3 of the total length of the flow channel, and the length of the outlet section of the flow channel is 1/3-2/5 of the total length of the flow channel.
More preferably, the radius R1 of the central arc line of the inlet section of the flow channel is 1/2-1/3 of the total length of the flow channel, and the radius R2 of the central arc line of the transition section of the flow channel is 1/2-1/3 of R1.
Further preferably, the number of the flow channels is 8-12.
Further preferably, each of the flow passages has a rectangular cross-sectional shape, and the area of the flow passage from the inlet to the outlet is always uniform.
Preferably, the wheel disc, the cover plate and the throttle ring are all made of carbon fiber materials.
Compared with the prior art, the invention has the following beneficial effects: according to the impeller for the rotary jet pump, the inlet section, the transition section and the outlet section of the impeller flow channel are improved, so that the energy conversion efficiency of liquid in the impeller flow channel is improved; the cross section of the flow passage of the impeller is designed into a rectangle, so that the processing and the manufacturing are convenient, the smooth finish of the inner surface of the flow passage is ensured, and the diffusion loss and the friction loss of liquid in the flow passage are reduced; the throttling ring with the spiral groove is arranged at the inner hole of the impeller cover plate, so that the local loss of the pump is reduced; the impeller is made of carbon fiber materials, is corrosion-resistant and light in weight, reduces the loading force borne by the bearing, and prolongs the service life of equipment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a side view of the wheel disc with the cover removed.
Fig. 3 is a schematic structural diagram of the impeller in operation.
In the figure: 1. the device comprises a wheel disc 2, a cover plate 3, a throttling ring 4, a flow channel 4.1, a flow channel inlet section 4.2, a flow channel transition section 4.3 and a flow channel outlet section.
Detailed Description
The invention is further described below with reference to the accompanying drawings: the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
As shown in fig. 1, an impeller for rotary jet pump, rim plate 1 including the through-hole is seted up at the center, radially set up a plurality of runner 4 that is used for carrying liquid on the left surface of rim plate 1, every runner 4 all begins to extend until the edge of rim plate 1 from the through-hole of rim plate 1, then along the axial perpendicular left surface that runs through rim plate 1, be provided with the apron 2 of closely laminating with rim plate 1 on the left surface of rim plate 1, the through-hole of being convenient for the part dress of wearing is seted up at the center of apron 2, it has throttle ring 3 to inlay in the through-hole of apron 2.
The runners 4 are uniformly distributed on the left side face of the wheel disc 1, and each runner 4 is formed by mutually communicating a runner inlet section 4.1, a runner transition section 4.2 and a runner outlet section 4.3. As shown in fig. 2, this segment of technology facilitates the overall design and layout of the impeller.
The inner hole of the throttling ring 3 is a taper hole with a large left end and a small right end, and a spiral groove for throttling is formed in the taper hole. As shown in fig. 1 and 3, the technical design of this section is beneficial to adjusting the radial clearance between the part and the throttle ring 3, thereby reducing the local loss of the impeller and improving the efficiency.
The excircle of the cover plate 2 is matched with the wheel disc 1 in a tongue-and-groove mode, a certain included angle theta is formed between the binding surface of the wheel disc 1 and the cover plate 2 corresponding to the runner inlet section 4.1 and the vertical direction, and the included angle theta is 4-8 degrees. As shown in FIG. 1, the technical design of the section increases the inlet area of the impeller, and improves the suction capacity and the cavitation resistance of the impeller.
The inlet section 4.1 of the flow channel is arc-shaped, the inlet installation angle is beta 1, and the value of beta 1 is 40-60 degrees generally; the outlet section 4.3 of the flow channel is linear, the outlet installation angle is beta 2, and the value of the beta 2 is usually 80-90 degrees; the flow passage transition section 4.2 is arc-shaped, one end of the flow passage transition section 4.2 is communicated with the flow passage inlet section 4.1, and the other end is communicated with the flow passage outlet section 4.3. As shown in FIG. 2, the technical design of this section improves the suction capacity of the impeller, increases the acting force of the impeller on the liquid, and improves the energy conversion rate of the liquid in the impeller.
The length of the runner inlet section 4.1 is 1/3-2/5 of the total length of the runner 4, the length of the runner transition section 4.2 is 1/5-1/3 of the total length of the runner 4, and the length of the runner outlet section 4.3 is 1/3-2/5 of the total length of the runner 4. As shown in FIG. 2, the technical design of the section increases the acting force of the impeller on the liquid, and improves the energy conversion rate of the liquid in the impeller and the efficiency of the equipment.
The radius R1 of the central arc line of the inlet section 4.1 of the flow channel is 1/2-1/3 of the total length of the flow channel, and the radius of the central arc line R2 of the transition section 4.2 of the flow channel is 1/2-1/3 of R1. As shown in fig. 2, this section of the art design reduces the energy loss of the liquid in the flow channel.
The number of the flow channels 4 is 8-12. The technical design of the section is convenient to process and manufacture, the constant flow of liquid can be ensured, and the liquid conveying is more stable.
The cross section of each flow channel 4 is rectangular, and the area of each flow channel 4 from the inlet to the outlet is always consistent. The technical design of the section is convenient for processing and manufacturing the flow channel and ensuring the smoothness of the inner surface of the flow channel, thereby reducing the diffusion loss and the friction loss of liquid in the flow channel and improving the efficiency of equipment.
The wheel disc 1, the cover plate 2 and the throttle ring 3 are all made of carbon fiber materials. The technical design of the section reduces the weight of the impeller and the load force borne by the bearing, improves the stability of the equipment and prolongs the service life of the equipment.
As shown in fig. 1 and 2, during operation, liquid firstly enters from the central hole of the impeller and fills each impeller flow channel 4, when the impeller rotates at a high speed, the liquid in the flow channel outlet section 4.3 is firstly thrown out under the action of centrifugal force, the liquid in the flow channel transition section 4.2 enters the flow channel outlet section 4.3 under the action of negative pressure, and the liquid in the flow channel inlet section 4.1 also enters the flow channel transition section 4.2, so that the liquid is continuously sucked from the flow channel inlet section 4.1, passes through the flow channel transition section 4.2 and is discharged from the flow channel outlet section 4.3, and the conveying operation of the liquid in the impeller is completed; at the same time, the impeller flow passage 4 not only increases the peripheral speed of the liquid, but also converts a part of the torque of the flow passage 4 to the liquid into pressure energy of the liquid.
As shown in fig. 3, when the pump works, the impeller rotates at high speed to accelerate and pressurize liquid, the liquid in the pump cavity has certain pressure energy, and the pressurized liquid in the pump cavity flows out of the inner hole of the throttle ring 3 due to the action of pressure difference; the inner hole of the throttling ring 3 is provided with a spiral groove, when the throttling ring 3 rotates at a high speed along with the impeller, the spiral groove at the inner hole of the throttling ring 3 generates a rigid water ring, according to the principle of spiral propulsion, the throttling ring 3 generates reverse thrust to high-pressure liquid in the pump cavity, and the local hydraulic loss is reduced; the inner hole of the throttling ring 3 is of a conical structure with a large left end and a small right end, the static part penetrating into the throttling ring 3 and the inner hole of the throttling ring 3 have the same conical degree, and when the static part moves towards the right side, the radial clearance between the static part and the throttling ring 3 is reduced, so that the radial clearance between the static part and the throttling ring 3 is reduced by adjusting the axial position of the static part during installation, the local hydraulic loss is further reduced, and the operation efficiency of equipment is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an impeller for rotatory jet pump, rim plate (1) including the through-hole is seted up at the center, radially set up a plurality of runner (4) that are used for carrying liquid on the left surface of rim plate (1), every runner (4) all begins to extend until the edge of rim plate (1) from the through-hole department of rim plate (1), then along the axial perpendicular left surface that runs through rim plate (1), be provided with apron (2) that closely laminate with rim plate (1) on the left surface of rim plate (1), the through-hole of being convenient for the part dress of wearing is seted up at the center of apron (2), its characterized in that: a throttling ring (3) is embedded in the through hole of the cover plate (2).
2. An impeller for a rotary jet pump according to claim 1, wherein: the runners (4) are uniformly distributed on the left side face of the wheel disc (1), and each runner (4) is formed by mutually communicating a runner inlet section (4.1), a runner transition section (4.2) and a runner outlet section (4.3).
3. An impeller for a rotary jet pump according to claim 1, wherein: the inner hole of the throttling ring (3) is a taper hole with a large left end and a small right end, and a spiral groove for throttling is formed in the taper hole.
4. An impeller for a rotary jet pump according to claim 1, wherein: the excircle of apron (2) is tongue-and-groove cooperation with rim plate (1), corresponds runner entry section (4.1) rim plate (1) and apron (2) binding face and vertical direction and is certain contained angle theta, and contained angle theta takes 4 ~ 8.
5. An impeller for a rotary jet pump according to claim 2, wherein: the inlet section (4.1) of the flow channel is arc-shaped, the inlet installation angle is beta 1, and the value of beta 1 is 40-60 degrees; the outlet section (4.3) of the flow channel is linear, the outlet installation angle is beta 2, and the value of beta 2 is 80-90 degrees; the flow passage transition section (4.2) is arc-shaped, one end of the flow passage transition section (4.2) is communicated with the flow passage inlet section (4.1), and the other end of the flow passage transition section is communicated with the flow passage outlet section (4.3).
6. An impeller for a rotary jet pump according to claim 5, wherein: the length of the runner inlet section (4.1) is 1/3-2/5 of the total length of the runner (4), the length of the runner transition section (4.2) is 1/5-1/3 of the total length of the runner (4), and the length of the runner outlet section (4.3) is 1/3-2/5 of the total length of the runner (4).
7. An impeller for a rotary jet pump according to claim 6, wherein: the radius R1 of the central arc line of the inlet section (4.1) of the flow channel is 1/2-1/3 of the total length of the flow channel, and the radius R2 of the central arc line of the transition section (4.2) of the flow channel is 1/2-1/3 of R1.
8. An impeller for a rotary jet pump according to claim 6, wherein: the number of the flow channels (4) is 8-12.
9. An impeller for a rotary jet pump according to claim 8, wherein: the cross section of each flow channel (4) is rectangular, and the area of each flow channel (4) from the inlet to the outlet is always consistent.
10. An impeller for a rotary jet pump according to claim 1, wherein: the wheel disc (1), the cover plate (2) and the throttle ring (3) are all made of carbon fiber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021866274.6U CN213540827U (en) | 2020-09-01 | 2020-09-01 | Impeller for rotary jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021866274.6U CN213540827U (en) | 2020-09-01 | 2020-09-01 | Impeller for rotary jet pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540827U true CN213540827U (en) | 2021-06-25 |
Family
ID=76490582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021866274.6U Active CN213540827U (en) | 2020-09-01 | 2020-09-01 | Impeller for rotary jet pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540827U (en) |
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2020
- 2020-09-01 CN CN202021866274.6U patent/CN213540827U/en active Active
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