CN216788803U - Stamping and welding formed centrifugal pump shell convenient to process - Google Patents
Stamping and welding formed centrifugal pump shell convenient to process Download PDFInfo
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- CN216788803U CN216788803U CN202122997724.6U CN202122997724U CN216788803U CN 216788803 U CN216788803 U CN 216788803U CN 202122997724 U CN202122997724 U CN 202122997724U CN 216788803 U CN216788803 U CN 216788803U
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Abstract
The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a stamping and welding formed centrifugal pump shell convenient to process, which comprises a circular pipe piece and a spiral volute formed by stamping, winding and forming and gradually increasing outwards in the radial direction, wherein the circular pipe piece is sequentially provided with a water inlet pipe part, a centrifugal chamber pipe part and an impeller inlet pipe part along the axial direction, the inner peripheral wall of the spiral volute is attached to the outer peripheral wall of the centrifugal chamber pipe part and is fixedly connected through welding and sealing, the outer end of the spiral volute is provided with a water outlet pipe part, the centrifugal chamber pipe part is provided with a centrifugal water outlet hole for communicating the inner cavity of the centrifugal chamber pipe part with the inner cavity of the spiral volute, and the circular pipe piece is formed by welding at least two single stamping and stretching formed unit pieces. The circular pipe fitting is formed by welding at least two single elements which are formed by stamping and drawing independently, so that the size of a required die is greatly reduced when the circular pipe fitting is processed, the processing difficulty can also be obviously reduced, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a stamping and welding formed centrifugal pump shell convenient to process.
Background
The centrifugal pump is a general mechanical product with large demand and wide application range, and is widely applied to various fields. Patent CN202120502183.2 that applicant previously filed discloses a method for manufacturing centrifugal pump, and the centrifugal pump of making includes centrifugal pump casing, motor, impeller, and the centrifugal pump casing includes pipe fitting and radial outside crescent spiral casing, and the tensile fashioned pipe fitting of punching press and the radial outside crescent spiral casing of punching press coiling, the pipe fitting is equipped with inlet pipe portion, centrifugal chamber pipe portion, impeller inlet pipe portion along the axial in proper order, the laminating of spiral casing internal perisporium is just fixed through welded sealing connection on the periphery wall of centrifugal chamber pipe portion be equipped with the centrifugal apopore of intercommunication centrifugal chamber pipe portion inner chamber and spiral casing inner chamber on the centrifugal chamber pipe portion. The radial sheet left after the opening has a flow guiding effect after the angle adjustment is carried out on the fluid, so that the centrifugal pump can bear the impact pressure effect of the fluid. The round pipe is integrally formed by stamping and stretching and needs to be matched with a die with a specific shape and specification for production. When the technology is applied, the applicant finds that the technology is high in cost for manufacturing a centrifugal pump with a large size specification, and a die for forming a round pipe fitting is large in size, high in manufacturing cost and difficult in machining operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a stamping and welding formed centrifugal pump shell which is convenient to process.
The technical scheme adopted by the utility model is as follows: the utility model provides a punching press weld forming centrifugal pump shell convenient to processing, its radial outside crescent spiral casing that includes pipe fitting and punching press coiling shaping, the pipe fitting is equipped with inlet pipe portion, centrifugal chamber pipe portion, impeller inlet pipe portion in proper order along the axial, the laminating of spiral casing internal perisporium is on the periphery wall of centrifugal chamber pipe portion and fixed through welded sealing connection, the outer end of spiral casing is equipped with outlet pipe portion, be equipped with the centrifugal apopore of intercommunication centrifugal chamber pipe portion inner chamber and spiral casing inner chamber on the centrifugal chamber pipe portion, the pipe fitting is the tensile shaping unit spare welding formation of punching press alone for at least two.
The inner diameter of the centrifugal chamber pipe part is larger than that of the water inlet pipe part.
The centrifugal chamber pipe portion is the circular pipeline of constant diameter, the inlet pipe portion is the circular pipeline of constant diameter, link up through the taper pipe between centrifugal chamber pipe portion and the inlet pipe portion.
The conical tube is a single element formed by independent stamping and stretching, and two ends of the conical tube are respectively connected with one end part of the water inlet pipe part and one end part of the centrifugal chamber pipe part in a welding mode.
The conical tube both ends have outside and extend protruding formation joint portion, and both ends the joint portion do not laminate the inside of inlet pipe portion and centrifugal chamber pipe portion or laminate the terminal surface of inlet pipe portion and centrifugal chamber pipe portion, the position of laminating mutually between conical tube and the inlet pipe portion is the face of weld, the position of laminating mutually between conical tube and the centrifugal chamber pipe portion is the face of weld.
The inner wall of one end of the water inlet pipe part connected with the conical pipe is provided with a groove matched with the combining part, and the combining part is embedded in the groove to enable the inner wall to be smooth.
The impeller inlet pipe part and the centrifugal chamber pipe part are a unit piece which is integrally formed by stamping and stretching, and then are cut to form a centrifugal water outlet hole; or the impeller inlet pipe part and the centrifugal chamber pipe part are two single elements formed by stamping and stretching, and the impeller inlet pipe part and the centrifugal chamber pipe part are directly welded and connected and then cut to form a centrifugal water outlet hole; or the round pipe part formed by the impeller inlet pipe part and the centrifugal chamber pipe part is formed by welding and connecting two stamping and stretching formed unit parts through at least two connecting pieces, and a certain distance is arranged between the connecting pieces to form a centrifugal water outlet hole.
The outer tip of inlet pipe portion is equipped with inlet tube flange, inlet tube flange and inlet pipe portion are body punching press stretch forming, or weld in inlet pipe portion tip after inlet tube flange takes shape alone.
The outer end of the impeller inlet pipe part is provided with a motor connecting flange, and the motor connecting flange is formed by integral stamping and stretching with the impeller inlet pipe part or is welded and connected with the impeller inlet pipe part after being formed separately.
The water outlet pipe part is formed by independent stretching and then is fixedly connected with the spiral volute in a welding mode.
The utility model has the following beneficial effects: the circular pipe fitting is formed by welding at least two single elements which are formed by independently stamping and drawing, so that when the circular pipe fitting is machined, the size of a required die is greatly reduced, the machining difficulty can also be obviously reduced, and the production cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic view of a circular tube manufacturing process;
FIG. 5 is a schematic view of another manufacturing method of a circular tube;
FIG. 6 is a schematic view of the structure of the conical tube matching with the inlet tube and the centrifugal chamber tube;
FIG. 7 is a schematic view of a third manufacturing method of a circular tube;
in the drawings, 1, a circular tube; 101, a water inlet pipe part; 102, a centrifugal chamber tube part; 103, an impeller inlet pipe portion; 104, centrifuging to form a water outlet; 105, connecting a water inlet pipe with a flange; 106, a motor connecting flange; 107, a conical tube; 108, a bonding portion; 109, a connecting sheet 2 and a spiral volute; 3, a water outlet pipe part; 301, a water outlet pipe is connected with a flange; 4, an impeller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
The terms of direction and position of the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the present invention.
As shown in fig. 1-3, a punching press weld forming centrifugal pump casing convenient to processing, it includes punching press stretch forming's pipe spare 1 and punching press coiling forming's radial outside spiral casing 2 that gradually increases, pipe spare 1 is equipped with inlet pipe portion 101, centrifugal chamber pipe portion 102, impeller entry pipe portion 103 along the axial in proper order, the laminating of spiral casing 2 internal perisporium is on the periphery wall of centrifugal chamber pipe portion 102 and fixed through welded seal connection, the outer end of spiral casing 2 is equipped with outlet pipe portion 3, be equipped with the centrifugation apopore 104 that communicates centrifugal chamber pipe portion 102 inner chamber and spiral casing 2 inner chamber on the centrifugal chamber pipe portion 102.
The process of making the above-described embodiment includes the steps of:
(1) forming a round pipe fitting 1;
(2) the spiral volute 2 which is gradually increased radially outwards is formed by punching and winding, and the spiral volute 2 is fixed outside the centrifugal chamber pipe part 102 in a welding mode.
Wherein, the round pipe fitting 1 is formed by welding at least two single elements which are formed by stamping and drawing separately. Thus, step (1) comprises the steps of: according to the designed structure, the unit pieces are integrally punched and drawn, and then at least two unit pieces are fixed through welding connection. Wherein, the concrete shape, length and quantity of unit spare and the prototype before processing can be designed according to the processing degree of difficulty, if the size specification of the punching press weld forming centrifugal pump shell of being convenient for to process is not too big, can be the single punching press stretch forming of two three unit spares only, if the size specification of the punching press weld forming centrifugal pump shell of being convenient for to process is too big, then the single punching press stretch forming of unit spare that needs more quantity.
In the step (2), the circular tube 1 formed integrally by welding can be welded and fixed, or the unit element with the centrifugal chamber tube part 102 can be welded and fixed, and then the unit element is welded and connected with other unit elements and fixed. Therefore, the processing sequence can be reasonably selected according to the processing difficulty, and the method is more flexible.
Specifically, the inside diameter of the centrifugal chamber tube part 102 is larger than the inside diameter of the water inlet tube part 101. In this embodiment, the centrifuge tube 102 is a circular tube with an equal diameter, the inlet tube 101 is a circular tube with an equal diameter, and the centrifuge tube 102 and the inlet tube 101 are connected by a tapered tube 107. This facilitates the processing.
As shown in fig. 4 and 5, the conical pipe 107 is a single element formed by stamping and drawing, and two ends of the conical pipe 107 are respectively connected with one end of the inlet pipe part 101 and one end of the centrifugal chamber pipe part 102 by welding. It is also possible to make the conical tube 107 integrally formed with the inlet pipe portion 101 or the centrifuge tube portion 102, but this requires a relatively more complex shape of the mold.
As shown in fig. 6, two ends of the conical tube 107 have outward extending protrusions to form a joint portion 108, the joint portions 108 at the two ends are respectively attached to the inside of the water inlet pipe portion 101 and the inside of the centrifugal chamber pipe portion 102, the joint portion between the conical tube 107 and the water inlet pipe portion 101 is a welding surface, and the joint portion between the conical tube 107 and the centrifugal chamber pipe portion 102 is a welding surface. The inner wall of one end of the water inlet pipe part 101 connected with the conical pipe 107 is provided with a groove matched with the combining part 108, and the combining part 108 is embedded in the groove to enable the inner wall to be flat. The joint 108 can greatly increase the area of the welding surface and increase the connection strength.
The outer end of the water inlet pipe part 101 is provided with a water inlet pipe connecting flange 105, as shown in fig. 4, the water inlet pipe connecting flange 105 is integrally formed by stamping and stretching with the water inlet pipe part 101, or, as shown in fig. 5, the water inlet pipe connecting flange 105 is formed separately and then welded and fixed with the water inlet pipe part 101, if necessary, the water inlet pipe connecting flange 105 can be formed by forging, so that the strength of the joint with the pipeline is improved.
As shown in fig. 7, the two ends of the tapered tube 107 have outwardly extending protrusions to form joint portions 108, and the joint portions 108 at the two ends are respectively attached to the end surfaces of the inlet pipe portion 101 and the chamber pipe portion 102, i.e. the welding position is not the bending position between the tapered tube 107 and the inlet pipe portion 101 and the chamber pipe portion 102, which is stronger than the connection strength. The impeller inlet pipe part 103 and the centrifugal chamber pipe part 102 form a circular pipe part which is formed by welding and connecting two stamping and stretching formed unit parts through at least two connecting pieces 109, a certain distance is arranged between the connecting pieces 109 to form a centrifugal water outlet hole 104, and the specific number of the connecting pieces 109 corresponds to the number of the centrifugal water outlet holes 104, so that a cutting and processing procedure is not needed.
The outer end of the impeller inlet pipe portion 103 is provided with a motor connecting flange 106, as shown in fig. 4, the motor connecting flange 106 is formed by integrally stamping and stretching the impeller inlet pipe portion 103, or, as shown in fig. 5, the motor connecting flange 106 is formed separately and then welded and fixed with the impeller inlet pipe portion 103, if necessary, the motor connecting flange 106 can be formed by forging, so as to improve the strength of the connection with the motor.
The outer tip of play water pipe portion 3 is equipped with outlet pipe connection flange 301, outlet pipe connection flange 301 is fixed with play water pipe portion 3 welded connection after for the integrative punching press stretch forming of play water pipe portion 3 or stretch forming alone.
The utility model provides a centrifugal pump, includes centrifugal pump shell, motor, impeller 4, the centrifugal pump shell is as above the punching press weld forming centrifugal pump shell of processing of being convenient for, the motor is located impeller inlet pipe portion 103 outside and is connected with impeller inlet pipe portion 103, the impeller is located centrifugal chamber pipe portion 102 inner chamber, the motor can drive the impeller and make its rotation and the rotation direction of impeller corresponding with spiral volute 2's radial increase direction.
The above description is only one embodiment of the present invention, and is not intended to limit the scope of the present invention; the scope of protection of the utility model is defined by the claims in the claims, and all equivalent changes and modifications made according to the utility model are within the scope of protection of the utility model.
Claims (7)
1. The utility model provides a punching press weld forming centrifugal pump casing convenient to processing, its includes radial outside crescent spiral casing (2) of pipe fitting (1) and punching press coiling shaping, pipe fitting (1) are equipped with inlet pipe portion (101), centrifugal chamber pipe portion (102), impeller inlet pipe portion (103) along the axial in proper order, the laminating of spiral casing (2) internal perisporium is on the periphery wall of centrifugal chamber pipe portion (102) and fixed through welded seal connection, the outer end of spiral casing (2) is equipped with outlet pipe portion (3), be equipped with the centrifugal apopore (104) of intercommunication centrifugal chamber pipe portion (102) inner chamber and spiral casing (2) inner chamber on centrifugal chamber pipe portion (102), its characterized in that: the round pipe fitting (1) is formed by welding at least two single units which are formed by stamping and drawing separately;
the inner diameter of the centrifugal chamber pipe part (102) is larger than that of the water inlet pipe part (101);
the centrifugal chamber pipe part (102) is a circular pipeline with the same diameter, the water inlet pipe part (101) is a circular pipeline with the same diameter, and the centrifugal chamber pipe part (102) is connected with the water inlet pipe part (101) through a conical pipe (107);
the conical pipe (107) is a single element formed by stamping and stretching independently, and two ends of the conical pipe (107) are respectively connected with one end of the water inlet pipe part (101) and one end of the centrifugal chamber pipe part (102) through welding.
2. The easy-to-machine stamped weld formed centrifugal pump housing of claim 1, wherein: conical duct (107) both ends have outside protruding joint portion (108) of forming that extends, and both ends joint portion (108) laminate respectively into the inside of water pipe portion (101) and centrifugal chamber pipe portion (102) or laminate into the terminal surface of water pipe portion (101) and centrifugal chamber pipe portion (102), the position of laminating mutually between conical duct (107) and water pipe portion (101) is the face of weld, the position of laminating mutually between conical duct (107) and centrifugal chamber pipe portion (102) is the face of weld.
3. The easy-to-machine stamped weld formed centrifugal pump housing of claim 2, wherein: the one end inner wall that inlet pipe portion (101) and conical tube (107) link to each other is equipped with the recess with joint portion (108) looks adaptation, joint portion (108) inlay locate in the recess make the inner wall level and smooth.
4. The easy-to-machine stamped weld formed centrifugal pump housing of claim 1, wherein: the impeller inlet pipe part (103) and the centrifugal chamber pipe part (102) are a unit piece which is integrally formed by stamping and stretching, and then a centrifugal water outlet hole (104) is formed by cutting; or the impeller inlet pipe part (103) and the centrifugal chamber pipe part (102) are two single elements formed by stamping and stretching, and the impeller inlet pipe part (103) and the centrifugal chamber pipe part (102) are directly welded and connected and then cut to form a centrifugal water outlet hole (104); or the circular tube part formed by the impeller inlet tube part (103) and the centrifugal chamber tube part (102) is formed by welding and connecting two stamping and stretching formed unit elements through at least two connecting pieces (109), and a certain distance is arranged between the connecting pieces (109) to form a centrifugal water outlet hole (104).
5. The easy-to-machine stamped weld formed centrifugal pump housing of claim 1, wherein: the outer end of the water inlet pipe part (101) is provided with a water inlet pipe connecting flange (105), the water inlet pipe connecting flange (105) and the water inlet pipe part (101) are integrally formed by stamping and stretching, or the water inlet pipe connecting flange (105) is formed separately and then welded at the end part of the water inlet pipe part (101).
6. The easy-to-machine stamped weld formed centrifugal pump housing of claim 1, wherein: the outer end of the impeller inlet pipe part (103) is provided with a motor connecting flange (106), and the motor connecting flange (106) is formed by integrally stamping and stretching the impeller inlet pipe part (103) or formed separately and then is welded and connected with the impeller inlet pipe part (103) and fixed.
7. The easy-to-machine stamped weld formed centrifugal pump housing of claim 1, wherein: the water outlet pipe part (3) is formed by independent stretching and then is fixedly connected with the spiral volute (2) in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122997724.6U CN216788803U (en) | 2021-11-30 | 2021-11-30 | Stamping and welding formed centrifugal pump shell convenient to process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122997724.6U CN216788803U (en) | 2021-11-30 | 2021-11-30 | Stamping and welding formed centrifugal pump shell convenient to process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216788803U true CN216788803U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122997724.6U Active CN216788803U (en) | 2021-11-30 | 2021-11-30 | Stamping and welding formed centrifugal pump shell convenient to process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216788803U (en) |
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2021
- 2021-11-30 CN CN202122997724.6U patent/CN216788803U/en active Active
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