CN212563669U - Vertical double entry pump of direct-connected type - Google Patents
Vertical double entry pump of direct-connected type Download PDFInfo
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- CN212563669U CN212563669U CN202020872334.9U CN202020872334U CN212563669U CN 212563669 U CN212563669 U CN 212563669U CN 202020872334 U CN202020872334 U CN 202020872334U CN 212563669 U CN212563669 U CN 212563669U
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- pump
- suction chamber
- impeller
- vertical double
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Abstract
The utility model relates to a direct-connected vertical double suction pump, which comprises a motor, a first fastener, a pump cover, a pump body, an impeller, a sliding bearing, a shaft, a key, a backwater pipe component, a second fastener, a water inlet section, an upper suction chamber, a volute chamber, a lower suction chamber, a water guide cone, a baffle, a water outlet section and a spigot; the impeller and the motor are in a direct connection structure, the shaft and the impeller are driven by a key, and the impeller is fixed on the shaft; a sliding bearing is arranged in the pump body, and the lower end of the shaft is fixed through the sliding bearing; the water inlet section is communicated with the upper suction chamber and the lower suction chamber; the volute chamber is communicated with the upper suction chamber and the lower suction chamber; the water outlet section is communicated with the volute chamber; a water guide cone is cast in the middle of the lower suction chamber, a baffle is cast on one side of the lower suction chamber close to the water outlet section, and a spigot is arranged on the inner wall of the volute chamber communicated with the upper suction chamber. The utility model discloses area is little, save space, can eliminate the transmission energy loss that causes because of the shaft coupling transmission, can further improve the efficiency of unit.
Description
Technical Field
The utility model relates to a double suction pump, concretely relates to area is little, save space, can eliminate the transmission energy loss that causes because of the shaft coupling transmission, can further improve the vertical double suction pump of direct-connected of the efficiency of unit.
Background
In general machinery, pump products are large in power consumption, so that under the environment of energy conservation and emission reduction, if the efficiency of a water pump can be improved, a large amount of electric energy consumption can be saved, and the aims of energy conservation and consumption reduction are fulfilled. The specific speed is an important parameter of the water pump and reflects the relationship among the flow rate, the rotating speed and the lift of the water pump. For a centrifugal pump, when the specific rotating speed is within a certain range, the efficiency is high, and if the specific rotating speed is too high or too low, the efficiency of the water pump is reduced. Therefore, if the single-stage single-suction centrifugal pump with higher specific speed is designed into the single-stage double-suction centrifugal pump with moderate specific speed, the efficiency of the water pump can be improved to a certain extent, and the purposes of energy conservation and emission reduction are achieved.
SUMMERY OF THE UTILITY MODEL
To the above problem, the main object of the present invention is to provide a vertical double suction pump of direct connection type which occupies a small area, saves space, can eliminate the loss of transmission energy caused by the transmission of a shaft coupling, and can further improve the efficiency of the unit.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a direct-connected vertical double-suction pump; the vertical double entry pump of direct-connected type includes: the water pump comprises a motor, a first fastening piece, a pump cover, a pump body, an impeller, a sliding bearing, a shaft, a key, a backwater pipe part, a second fastening piece, a water inlet section, an upper suction chamber, a volute chamber, a lower suction chamber, a water guide cone, a baffle, a water outlet section and a spigot.
The motor is connected with the pump cover through a first fastener; the pump cover is connected with the pump body through a second fastening piece; the impeller and the motor are in a direct connection structure and share a shaft; the shaft and the impeller are driven by a key, and the impeller is fixed on the shaft; a sliding bearing is arranged in the pump body, and the lower end of the shaft is fixed through the sliding bearing; a backwater pipe part is arranged at the position close to the outlet of the pump body.
The water inlet section is communicated with the upper suction chamber and the lower suction chamber; the volute chamber is communicated with the upper suction chamber and the lower suction chamber; the water outlet section is communicated with the volute chamber; a water guide cone is cast in the middle of the lower suction chamber, a baffle is cast on one side of the lower suction chamber close to the water outlet section, and a spigot is arranged on the inner wall of the volute chamber communicated with the upper suction chamber.
In the embodiment of the present invention: a first sealing ring is arranged between the pump body and the impeller, and a second sealing ring is arranged between the pump cover and the impeller; an O-shaped sealing ring is arranged between the pump cover and the pump body; a water retaining ring is arranged below the motor.
In the embodiment of the present invention: and the shaft and the impeller are locked and fixed through a locking nut.
In the embodiment of the present invention: the outer diameter of the water retaining ring is 15-30mm larger than the inner diameter, and the thickness of the water retaining ring is 5-15 mm.
In the embodiment of the present invention: the first fastener has a specification of M16 or a number of 4 or 8.
In the embodiment of the present invention: the thickness range of the first sealing ring is as follows: 20-50mm, width range: 10-15 mm.
In the embodiment of the present invention: the second sealing ring and the pump cover are cast into a whole, the second sealing ring and the pump cover are connected through two reinforcing ribs, the thickness range of the second sealing ring is 30-70mm, and the width range of the second sealing ring is 40-100 mm.
In the embodiment of the present invention: the cross section diameter of the O-shaped sealing ring is 7mm, and the inner diameter is 410 and 570 mm.
In the embodiment of the present invention: a serrated pressure relief groove is processed on the spigot; the depth and width range of the pressure relief groove are as follows: 0.8-1.5 mm.
In the embodiment of the present invention: the thickness range of the baffle is as follows: 15-30 mm.
The utility model discloses an actively advance the effect and lie in: the utility model provides a vertical double entry pump of direct-connected type has following advantage: the utility model discloses a direct-connected type, vertical double entry pump do not have direct-connected type, and the shaft coupling is all joined in marriage to like product generally, the utility model discloses the shaft coupling has been cancelled.
The utility model discloses processing has the pressure release groove of cockscomb structure on the tang, the middle part casting of suction chamber has the guiding water awl under, and one side casting that suction chamber is close to out the water section down has the baffle, the section of intaking designs for the toper can increase the flow area, reduce the velocity of flow to reduce hydraulic loss, raise the efficiency.
The utility model discloses area is little, save space, can eliminate the transmission energy loss that causes because of the shaft coupling transmission, can further improve the efficiency of unit.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a schematic structural view (a) of the seam allowance of fig. 1 and 2, wherein a serrated pressure relief groove is formed in the seam allowance.
The utility model discloses the name that well reference numeral corresponds:
the water pump comprises a motor 1, a water retaining ring 2, a first fastening piece 3, a pump cover 4, a pump body 5, an impeller 6, a first sealing ring 7, a sliding bearing 8, a shaft 9, a locking nut 10, a key 11, a water return pipe part 12, a second sealing ring 13, a second fastening piece 14, an O-shaped sealing ring 15, a water inlet section 16, an upper suction chamber 17, a volute chamber 18, a lower suction chamber 19, a water guide cone 20, a baffle 21, a water outlet section 22, a spigot 23 and a pressure relief groove 24.
Detailed Description
The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.
The utility model provides a vertical double entry pump of direct-connected type, figure 1 is the utility model discloses an overall structure schematic diagram, figure 2 are the partial enlarged view of figure 1, and figure 3 is the structural schematic diagram (A department) that has the pressure relief groove department of cockscomb structure in figure 1 and figure 2 processing on the tang, as shown in figures 1-3, the utility model provides a vertical double entry pump of direct-connected type includes: the water pump comprises a motor 1, a water retaining ring 2, a first fastening piece 3, a pump cover 4, a pump body 5, an impeller 6, a first sealing ring 7, a sliding bearing 8, a shaft 9, a locking nut 10, a key 11, a water return pipe part 12, a second sealing ring 13, a second fastening piece 14, an O-shaped sealing ring 15, a water inlet section 16, an upper suction chamber 17, a volute chamber 18, a lower suction chamber 19, a water guide cone 20, a baffle 21, a water outlet section 22 and a spigot 23.
The water inlet section 16 is communicated with the upper suction chamber 17 and the lower suction chamber 19; the volute chamber 18 is communicated with the upper suction chamber 17 and the lower suction chamber 19; the water outlet section 16 is communicated with the volute chamber 18; a water guide cone 20 is cast in the middle of the lower suction chamber 19, a baffle 21 is cast on one side of the lower suction chamber 19 close to a water outlet section 22, and a spigot 23 is arranged on the inner wall of the volute chamber 18 communicated with the upper suction chamber 17.
The motor 1 is connected with the pump cover 4 through a first fastener 3; the pump cover 4 is connected with the pump body 5 through a second fastening piece 14; the impeller 6 and the motor 1 are in a direct connection structure and share a shaft 9; the shaft 9 and the impeller 6 are driven by a key 11, and the shaft 9 and the impeller 6 are locked and fixed by a locking nut 10; a sliding bearing 8 is arranged in the pump body 5, and the lower end of the shaft 9 is fixed through the sliding bearing 8 so as to prevent the pump shaft from swinging during operation; a first sealing ring 7 is arranged between the pump body 5 and the impeller 6, a second sealing ring 13 is arranged between the pump cover 4 and the impeller 6, and the two sealing rings have the function of reducing the leakage of high-pressure water in the pump body to the inlet of the impeller; a return pipe member 12 is provided adjacent the outlet of the pump body and serves to direct the high pressure water in the pump body to the location of the mechanical seal 16 for lubricating and cooling the mechanical seal; an O-shaped sealing ring 15 is arranged between the pump cover 4 and the pump body 5 to prevent high-pressure water in the pump body from leaking along a gap between the pump body and the pump cover; a water retaining ring 2 is arranged below the motor 1, and the function of the water retaining ring is to prevent a small amount of liquid leaked from the mechanical seal 16 from entering the interior of the motor along the shaft.
A serrated pressure relief groove is processed on the spigot; a serrated pressure relief groove 24 is processed on the spigot 23; the depth and width range of the pressure relief groove are as follows: 0.8-1.5 mm. The thickness range of the baffle 21 is: 15-30 mm.
The pressure relief groove 24 is used for reducing the leakage of high-pressure water in the volute chamber into the upper suction chamber along the seam allowance, so that the leakage loss can be reduced, and the volume efficiency can be improved.
The thickness and the size of the middle water retaining ring 2 of the utility model change along with the thickness of the shaft diameter, the cross section of the inner diameter of the water retaining ring 2 is arc-shaped, so as to ensure that the water retaining ring is tightly matched with the shaft, the outer diameter is 15-30mm larger than the inner diameter, and the thickness is 5-15 mm.
The utility model discloses well first fastener 3's specification is M16 or M20, and quantity is 4 or 8, and quantity and size are decided according to the power size of motor.
The first sealing ring 7 of the utility model is made of heat-treated wear-resistant material, the thickness range is 20-50mm, and the width range is 10-15 mm.
The utility model discloses well lock nut 10 adopts stainless steel, can prevent to die to be difficult to dismantle because of getting rusty and axle lock, and lock nut all adopts thin tooth screw thread in order to increase locking ability, and pitch is 2mm, and the screw thread is slightly littleer than the diameter of axle in order to guarantee simple to operate.
The middle key 11 of the utility model is made of stainless steel, the size of the specification of the middle key changes along with the size of the shaft diameter, the width range is 16-22mm, the height range is 10-14mm, and the length is 85 mm.
The function of return pipe part 12 is to guide the high pressure water at the pump body exit to the position of mechanical seal and wash mechanical seal to prevent that mechanical seal from doing the friction and causing the damage, and return pipe part 12 is the flexible metal hose, and the internal diameter is 12 mm.
The second sealing ring 13 and the pump cover 4 are cast into a whole, and are connected through two reinforcing ribs, so that the assembly is convenient, the thickness range is 30-70mm, and the width range is 40-100 mm.
The specification of the second fastener 14 is M16, the number of the second fasteners is 8 or 12, and the number of the second fasteners changes with the diameter of the impeller;
the utility model discloses well O type sealing washer 15's material is "rubber II-2", and the cross-sectional diameter is 7mm, and the internal diameter is 410 supplyes 570mm, and the size of internal diameter changes along with the size of impeller diameter.
The serrated pressure relief groove is formed in the spigot, so that the leakage loss of the working medium can be reduced; the water guide cone is cast in the middle of the lower suction chamber to play a role in guiding water, so that hydraulic loss is reduced; a baffle is cast at one side of the lower suction chamber close to the water outlet section to prevent vortex from forming at the inlet of the impeller; the water inlet section is designed into a conical shape, so that the flow area can be increased, the flow speed can be reduced, the hydraulic loss can be reduced, and the efficiency can be improved.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to 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 is defined by the appended claims and their equivalents.
Claims (10)
1. A direct-connected vertical double-suction pump; the method is characterized in that: the vertical double entry pump of direct-connected type includes: the water pump comprises a motor, a first fastening piece, a pump cover, a pump body, an impeller, a sliding bearing, a shaft, a key, a backwater pipe part, a second fastening piece, a water inlet section, an upper suction chamber, a volute chamber, a lower suction chamber, a water guide cone, a baffle, a water outlet section and a spigot;
the motor is connected with the pump cover through a first fastener; the pump cover is connected with the pump body through a second fastening piece; the impeller and the motor are in a direct connection structure and share a shaft; the shaft and the impeller are driven by a key, and the impeller is fixed on the shaft; a sliding bearing is arranged in the pump body, and the lower end of the shaft is fixed through the sliding bearing; a backwater pipe part is arranged at a position close to the outlet of the pump body;
the water inlet section is communicated with the upper suction chamber and the lower suction chamber; the volute chamber is communicated with the upper suction chamber and the lower suction chamber; the water outlet section is communicated with the volute chamber; a water guide cone is cast in the middle of the lower suction chamber, a baffle is cast on one side of the lower suction chamber close to the water outlet section, and a spigot is arranged on the inner wall of the volute chamber communicated with the upper suction chamber.
2. The direct-connected vertical double suction pump according to claim 1, wherein a first sealing ring is arranged between the pump body and the impeller, and a second sealing ring is arranged between the pump cover and the impeller; an O-shaped sealing ring is arranged between the pump cover and the pump body; a water retaining ring is arranged below the motor.
3. The direct connection type vertical double suction pump according to claim 1, wherein the shaft and the impeller are locked and fixed by a locking nut.
4. The direct connection type vertical double suction pump according to claim 2, wherein the outer diameter of the water retaining ring is 15-30mm larger than the inner diameter, and the thickness is 5-15 mm.
5. The direct connection vertical double suction pump according to claim 1, wherein the first fastening member has a specification of M16 or a number of 4 or 8.
6. The direct connection vertical double suction pump according to claim 2, wherein the first sealing ring has a thickness in the range of: 20-50mm, width range: 10-15 mm.
7. The direct-connected vertical double suction pump according to claim 2, wherein the second sealing ring is cast integrally with the pump cover, and is connected with the pump cover through two reinforcing ribs, and the thickness range of the second sealing ring is 30-70mm, and the width range of the second sealing ring is 40-100 mm.
8. The direct connection type vertical double suction pump as claimed in claim 2, wherein the cross-sectional diameter of the O-ring is 7mm, and the inner diameter is 410 mm and 570 mm.
9. The direct-connected vertical double suction pump according to claim 1, wherein a serrated pressure relief groove is machined on the spigot; the depth and width range of the pressure relief groove are as follows: 0.8-1.5 mm.
10. The direct connection vertical double suction pump according to claim 1, wherein the thickness range of the baffle is: 15-30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020872334.9U CN212563669U (en) | 2020-05-21 | 2020-05-21 | Vertical double entry pump of direct-connected type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020872334.9U CN212563669U (en) | 2020-05-21 | 2020-05-21 | Vertical double entry pump of direct-connected type |
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| Publication Number | Publication Date |
|---|---|
| CN212563669U true CN212563669U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020872334.9U Active CN212563669U (en) | 2020-05-21 | 2020-05-21 | Vertical double entry pump of direct-connected type |
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| Country | Link |
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| CN (1) | CN212563669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594454A (en) * | 2020-05-21 | 2020-08-28 | 上海凯泉泵业（集团）有限公司 | Vertical double entry pump of direct-connected type |
| CN111594454B (en) * | 2020-05-21 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | Direct-connection vertical double-suction pump |
-
2020
- 2020-05-21 CN CN202020872334.9U patent/CN212563669U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594454A (en) * | 2020-05-21 | 2020-08-28 | 上海凯泉泵业（集团）有限公司 | Vertical double entry pump of direct-connected type |
| CN111594454B (en) * | 2020-05-21 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | Direct-connection vertical double-suction pump |
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