Production equipment of multi-stage pump outer cylinder

Abstract

The invention relates to the field of vertical multi-stage pump production, in particular to production equipment of a multi-stage pump outer barrel, which comprises a lathe bed, a binding die, a positioning piece and an eccentric wheel, the binding die is connected to the lathe bed and used for binding one end of a stainless steel barrel, the positioning piece is slidably connected to the lathe bed, and the eccentric wheel is arranged on the positioning piece. The positioning piece is used for being attached to the other end of the stainless steel cylinder, the eccentric wheel is rotationally connected to the lathe bed, the rotating axis of the eccentric wheel is perpendicular to the sliding direction of the positioning piece, and the periphery of the eccentric wheel is used for pressing one end of the stainless steel cylinder so that the other end of the stainless steel cylinder can be attached to the positioning piece. According to the technical scheme, the edge rolling die is used for carrying out edge rolling machining on the end portion of the stainless steel cylinder so as to remove burrs; in the edge rolling machining process, the force of the eccentric wheel on the stainless steel cylinder ensures that the stainless steel cylinder is tightly attached to the positioning piece, and deviation of the stainless steel cylinder is avoided.

Description

Technical Field

[0001] The present application relates to the field of vertical multi-stage pump production, and in particular to a production device for a multi-stage pump outer cylinder. Background Art

[0002] The existing document with announcement number CN204921393U discloses a vertical multi-stage pump, which includes an outer cylinder and a three-section structure arranged inside the outer cylinder, wherein each section of the three-section structure is provided with an impeller.

[0003] The inner circumference and / or outer circumference surface of the outer cylinder is in contact with the liquid for a long time. In order to reduce the corrosion of the liquid on the outer cylinder, the technicians are considering replacing the material of the outer cylinder from cast iron to stainless steel.

[0004] When stainless steel is used to produce the outer cylinder, the material properties of stainless steel increase the difficulty of mechanical processing. For example, under the same processing conditions, the number of burrs on the stainless steel cylinder (compared to the cast iron cylinder) is greater, and when the sealing ring is subsequently assembled, more burrs will cause more damage to the sealing ring. Summary of the invention

[0005] In order to reduce the damage of the sealing ring during the assembly process, the present application provides a production device for the outer cylinder of a multi-stage pump.

[0006] The present application provides a production equipment for a multi-stage pump outer cylinder adopts the following technical solution: A production equipment for a multi-stage pump outer cylinder, comprising a bed, a hemming mold, a positioning piece and an eccentric wheel. The hemming mold is connected to the bed, and the hemming mold is used to hem one end of the stainless steel cylinder. The positioning member is slidably connected to the bed, and the positioning member is used for the other end of the stainless steel cylinder to fit. The eccentric wheel is rotatably connected to the bed, the rotation axis of the eccentric wheel is perpendicular to the sliding direction of the positioning member, and the outer periphery of the eccentric wheel is used to press one end of the stainless steel cylinder so that the other end of the stainless steel cylinder fits against the positioning member.

[0007] By adopting the above technical solution, the end of the stainless steel tube is rolled using a rolling die to remove burrs; during the rolling process, the force of the eccentric wheel on the stainless steel tube ensures that the stainless steel tube is close to the positioning piece to prevent the stainless steel tube from deviating.

[0008] Preferably, it also includes a pressure sensor, a control module and an execution module. The pressure sensors are provided with three, and are used to detect and output the pressure data of the stainless steel cylinder on the positioning member. The control module receives the three pressure data, The execution module is used to control the driving force of the eccentric wheel. When any of the pressure data is less than a preset value, the control module controls the execution module to increase the driving force of the eccentric wheel.

[0009] By adopting the above technical solution, it is ensured that the stainless steel tube fits the positioning piece, thereby ensuring accurate rolling processing and preventing the stainless steel tube from deviating.

[0010] Preferably, the positioning member includes a plate body and a positioning block. The positioning block is connected to the surface of the plate body. There are three positioning blocks, and the three positioning blocks are used for the other end of the stainless steel cylinder to fit. The positioning blocks and the pressure sensors correspond to each other one by one.

[0011] By adopting the above technical solution, three points determine a plane to ensure the accurate position of the stainless steel cylinder.

[0012] Preferably, the positioning member further comprises a flexible pad, The flexible pad is provided with a through hole, the flexible pad is connected to the surface of the plate, and the through hole is directly opposite to the positioning block. In the absence of external force, the positioning block is located in the through hole.

[0013] By adopting the above technical solution, the pressure sensor will output pressure data only when the force exerted by the stainless steel cylinder on the positioning piece causes the flexible pad to deform and the stainless steel cylinder to squeeze the positioning block, ensuring that the force exerted by the eccentric wheel on the stainless steel cylinder causes the stainless steel cylinder to fit to the positioning piece.

[0014] Preferably, the positioning member further comprises a sliding plate, The sliding plate is slidably connected to the bed. The plate body is rotatably connected to the sliding plate, and the rotation axis is parallel to the sliding direction of the sliding plate.

[0015] By adopting the above technical solution, during the working process of the rolling mold, the hemming mold will drive the stainless steel cylinder to rotate, and the plate body and the positioning block will rotate with the stainless steel cylinder, thereby reducing the resistance to the rotation of the stainless steel cylinder.

[0016] Preferably, the execution module includes a rotating shaft, a driving plate, a magnet and an adjusting member. The rotating shaft is rotatably connected to the bed. The eccentric wheel is rotatably sleeved outside the rotating shaft, and the eccentric wheel and the rotating shaft are axially fixed. The driving plate is slidably sleeved outside the rotating shaft, the driving plate and the rotating shaft are circumferentially fixed, and the driving plate is used to press against the eccentric wheel. The magnet and the driving plate interact with each other through magnetic force. The adjusting member is used to adjust the magnitude of the magnetic force between the magnet and the driving plate.

[0017] By adopting the above technical solution, the dynamic friction between the drive plate and the eccentric wheel is adjusted by adjusting the magnetic force between the magnet and the drive plate, and the dynamic friction between the drive plate and the eccentric wheel is the driving force of the eccentric wheel.

[0018] Preferably, the magnet includes an electromagnet, and the adjusting member includes an adjusting circuit. The regulating circuit is used to control the current of the electromagnet.

[0019] By adopting the above technical solution, the magnitude of the magnetic force between the magnet and the driving plate can be adjusted.

[0020] Preferably, it also includes a driving source and a transmission mechanism, The driving source is used to drive the hemming die to operate. The transmission mechanism is connected between the driving source and the rotating shaft.

[0021] By adopting the above technical solution, when the hemming mold is working, the eccentric wheel automatically presses the stainless steel cylinder; after the processing is completed, the driving source stops working, and the force between the eccentric wheel and the stainless steel cylinder is automatically unloaded, which is convenient for taking.

[0022] Preferably, it also includes a collar, The sleeve ring is rotatably sleeved outside the eccentric wheel.

[0023] By adopting the above technical solution, the sleeve ring is used to contact the stainless steel cylinder, and rolling friction is used instead of sliding friction to reduce the resistance of the stainless steel cylinder to rotation.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: The end of the stainless steel cylinder is rolled using a rolling die to remove burrs. During the rolling process, the force of the eccentric wheel on the stainless steel cylinder ensures that the stainless steel cylinder is close to the positioning piece to prevent the stainless steel cylinder from deviating. The pressure sensor will output pressure data only when the force exerted by the stainless steel cylinder on the positioning piece causes the flexible pad to deform and the stainless steel cylinder to squeeze the positioning block, ensuring that the force exerted by the eccentric wheel on the stainless steel cylinder causes the stainless steel cylinder to fit the positioning piece; The dynamic friction between the drive plate and the eccentric wheel is adjusted by adjusting the magnetic force between the magnet and the drive plate, and the dynamic friction is the driving force of the eccentric wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the production equipment.

[0026] Figure 2 It is a schematic diagram of the positioning piece.

[0027] Figure 3 yes Figure 1Enlarged view of point A in the middle.

[0028] Explanation of the accompanying drawings: 1. bed; 2. hemming mold; 3. driving source; 4. positioning member; 41. sliding plate; 42. plate body; 43. positioning block; 44. flexible pad; 441. through hole; 51. eccentric wheel; 52. collar; 61. rotating shaft; 62. driving plate; 63. magnet; 0. stainless steel cylinder. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] The outer cylinder of the multistage pump is stainless steel cylinder 0.

[0031] Reference Figure 1 The embodiment of the present application discloses a production device for a multi-stage pump outer cylinder, including a bed 1, a rolling mold 2 and a driving source 3.

[0032] The hemming mold 2 is connected to the bed 1, and is used to hem one end of the stainless steel tube 0 to remove burrs. The driving source 3 is used to drive the hemming mold 2 to operate. During the working process of the rolling mold, the hemming mold 2 drives the stainless steel tube 0 to rotate.

[0033] Reference Figure 1 and Figure 2 The production equipment further includes a positioning member 4. The positioning member 4 is slidably connected to the bed 1, and the positioning member 4 is used for the other end of the stainless steel cylinder 0 to fit.

[0034] The positioning member 4 includes a sliding plate 41 , a plate body 42 , a positioning block 43 and a flexible pad 44 .

[0035] The sliding plate 41 is slidably connected to the bed 1, and the sliding direction of the sliding plate 41 is parallel to the rotation axis of the stainless steel cylinder 0. In the figure: the sliding plate 41 is driven by a cylinder to slide relative to the bed 1; and the sliding plate 41 is also connected to a guide rod to ensure that the sliding direction of the sliding plate 41 remains stable.

[0036] The plate body 42 is rotatably connected to a side of the sliding plate 41 facing the hemming mold 2 , and a rotation axis of the rotating plate is parallel to a sliding direction of the sliding plate 41 .

[0037] The positioning block 43 is fixedly connected to the surface of the plate 42 facing the rolling mold. There are three positioning blocks 43 in a circular array. The three positioning blocks 43 are used for the other end of the stainless steel cylinder 0 to fit in order to achieve positioning of the stainless steel cylinder 0.

[0038] The flexible pad 44 is connected to the surface of the plate 42 facing the rolling mold, and the flexible pad 44 is provided with a through hole 441, which passes through the flexible pad 44 and faces the positioning block 43. The flexible pad 44 can be made of sponge.

[0039] In the absence of external force, the thickness of the flexible pad 44 is greater than the thickness of the positioning block 43 , so that the positioning block 43 is located in the through hole 441 .

[0040] Reference Figure 1 and Figure 3 The production equipment also includes an eccentric wheel 51 and a sleeve ring 52.

[0041] The eccentric wheel 51 is rotatably connected to the bed 1, and the rotation axis of the eccentric wheel 51 is perpendicular to the sliding direction of the sliding plate 41. In the drawings: the sliding direction of the sliding plate 41 is horizontal; the rotation axis of the eccentric wheel 51 is vertical; the eccentric wheel 51 is located above the rolling mold; the eccentric wheel 51 is not in contact with the hemming mold 2.

[0042] The sleeve ring 52 is rotatably sleeved on the outside of the eccentric wheel 51, and the outer peripheral surface of the sleeve ring 52 is used for contacting one end of the stainless steel cylinder 0.

[0043] The eccentric wheel 51 and the collar 52 are used to compress one end of the stainless steel cylinder 0 so that the other end of the stainless steel cylinder 0 fits against the three positioning blocks 43 .

[0044] The production equipment also includes pressure sensors, control modules and execution modules.

[0045] There are three pressure sensors, and the pressure sensors and the positioning blocks 43 correspond to each other. The pressure sensors are used to detect and output the pressure data of the stainless steel cylinder 0 against the positioning block 43.

[0046] The control module receives the three pressure data. The execution module is used to control the driving force of the eccentric wheel 51.

[0047] When any pressure data is less than a preset value, the control module controls the execution module to increase the driving force of the eccentric wheel 51 .

[0048] The execution module includes a rotating shaft 61, a driving plate 62, a magnet 63 and an adjusting member.

[0049] The rotating shaft 61 is rotatably connected to the bed 1. The eccentric wheel 51 is rotatably sleeved outside the rotating shaft 61, and the eccentric wheel 51 and the rotating shaft 61 are axially fixed (e.g., by a retaining ring, a bearing, etc.). The driving plate 62 is slidably sleeved outside the rotating shaft 61, and the driving plate 62 and the rotating shaft 61 are circumferentially fixed (e.g., by a key connection), and the driving plate 62 is used to press against the eccentric wheel 51. The magnet 63 and the driving plate 62 interact with each other through magnetic force. The adjusting member is used to adjust the magnitude of the magnetic force between the magnet 63 and the driving plate 62.

[0050] In one embodiment: the magnet 63 includes an electromagnet, and the adjustment member includes an adjustment circuit; the adjustment circuit is used to control the current of the electromagnet; the magnetic force between the electromagnet and the drive plate 62 is a repulsive force, the electromagnet is located above the drive plate 62, and the drive plate 62 is located above the eccentric wheel 51.

[0051] In another embodiment, the adjusting member includes an adjusting driving cylinder, and the magnet 63 includes a permanent magnet; the adjusting driving cylinder is used to adjust the distance between the permanent magnet and the driving plate 62 .

[0052] The production equipment further includes a transmission mechanism, which is connected between the driving source 3 and the rotating shaft 61. The transmission mechanism may include a bevel gear transmission, a belt transmission, and the like.

[0053] The implementation principle of the production equipment of the outer cylinder of a multi-stage pump in the embodiment of the present application is: using a rolling mold 2 to roll the end of the stainless steel cylinder 0 to remove burrs.

[0054] During the rolling process, the force of the eccentric wheel 51 on the stainless steel cylinder 0 ensures that the stainless steel cylinder 0 is tightly attached to the positioning piece 4 to prevent the stainless steel cylinder 0 from deviating: only when the force of the stainless steel cylinder 0 on the positioning piece 4 causes the flexible pad 44 to deform and the stainless steel cylinder 0 to squeeze the positioning block 43, the pressure sensor will output pressure data to ensure that the force of the eccentric wheel 51 on the stainless steel cylinder 0 makes the stainless steel cylinder 0 fit to the positioning piece 4; and by adjusting the magnetic force between the magnet 63 and the drive plate 62 to adjust the dynamic friction between the drive plate 62 and the eccentric wheel 51, the dynamic friction is the driving force of the eccentric wheel 51.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A production equipment for a multi-stage pump outer cylinder, characterized in that: It comprises a bed (1), a hemming mold (2), a positioning member (4) and an eccentric wheel (51). The hemming mold (2) is connected to the bed (1), and the hemming mold (2) is used to hem one end of the stainless steel cylinder. The positioning member (4) is slidably connected to the bed (1), and the positioning member (4) is used for the other end of the stainless steel cylinder to fit in. The eccentric wheel (51) is rotatably connected to the bed (1); the rotation axis of the eccentric wheel (51) is perpendicular to the sliding direction of the positioning member (4); and the outer periphery of the eccentric wheel (51) is used to press one end of the stainless steel cylinder so that the other end of the stainless steel cylinder fits against the positioning member (4).

2. The production equipment for the outer barrel of a multistage pump according to claim 1, characterized in that: It also includes a pressure sensor, a control module and an execution module. The pressure sensors are provided with three, and are used to detect and output the pressure data of the stainless steel cylinder on the positioning member (4). The control module receives the three pressure data, The execution module is used to control the driving force of the eccentric wheel (51). When any of the pressure data is less than a preset value, the control module controls the execution module to increase the driving force of the eccentric wheel (51).

3. The production equipment for the outer barrel of a multistage pump according to claim 2, characterized in that: The positioning member (4) comprises a plate body (42) and a positioning block (43). The positioning block (43) is connected to the surface of the plate body (42). Three positioning blocks (43) are provided. The three positioning blocks (43) are used for the other end of the stainless steel cylinder to fit in. The positioning blocks (43) and the pressure sensors correspond one to one.

4. The production equipment for the outer barrel of a multistage pump according to claim 3, characterized in that: The positioning member (4) further comprises a flexible pad (44), The flexible pad (44) is provided with a through hole (441) therethrough. The flexible pad (44) is connected to the surface of the plate body (42). The through hole (441) faces the positioning block (43). In the absence of external force, the positioning block (43) is located in the through hole (441).

5. The production equipment for the outer barrel of a multistage pump according to claim 3, characterized in that: The positioning member (4) further comprises a sliding plate (41), The sliding plate (41) is slidably connected to the bed (1). The plate body (42) is rotatably connected to the sliding plate (41), and the rotation axis is parallel to the sliding direction of the sliding plate (41).

6. The production equipment for the outer barrel of a multi-stage pump according to claim 2, characterized in that: The execution module comprises a rotating shaft (61), a driving plate (62), a magnet (63) and an adjusting member. The rotating shaft (61) is rotatably connected to the bed (1). The eccentric wheel (51) is rotatably sleeved outside the rotating shaft (61), and the eccentric wheel (51) and the rotating shaft (61) are axially fixed. The driving plate (62) is slidably sleeved outside the rotating shaft (61), and the driving plate (62) and the rotating shaft (61) are circumferentially fixed. The driving plate (62) is used to press against the eccentric wheel (51). The magnet (63) and the drive plate (62) interact with each other through magnetic force. The adjusting member is used to adjust the magnitude of the magnetic force between the magnet (63) and the driving plate (62).

7. The production equipment for the outer barrel of a multi-stage pump according to claim 6, characterized in that: The magnet (63) comprises an electromagnet, and the adjustment element comprises an adjustment circuit. The regulating circuit is used to control the current of the electromagnet.

8. The production equipment for the outer barrel of a multi-stage pump according to claim 6, characterized in that: It also includes a driving source (3) and a transmission mechanism, The driving source (3) is used to drive the hemming die (2) to operate. The transmission mechanism is connected between the driving source (3) and the rotating shaft (61).

9. The production equipment for the outer barrel of a multi-stage pump according to claim 1, characterized in that: Also includes a collar (52), The sleeve ring (52) is rotatably sleeved on the outside of the eccentric wheel (51).

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