A static balancing device for pump impeller

Abstract

The present invention discloses a pump impeller static balancing device, comprising a contour base and a support platform fixedly mounted on the contour base, the contour base being provided with two groups; a first vertical plate and a second vertical plate are fixedly mounted on the support platform, the first vertical plate and the second vertical plate are parallelly arranged at two ends of the support platform, a connecting rod is arranged above the support platform, the two ends of the connecting rod are respectively fixedly connected to the first vertical plate and the second vertical plate, a sliding seat is slidably connected to the connecting rod, the lower end of the sliding seat is slidably connected to the upper surface of the support platform, the two groups of sliding seats are respectively fixedly mounted with a first mandrel and a second mandrel, and a transition sleeve is fixedly mounted on the first mandrel and the second mandrel. The sliding seat of the present invention slides back and forth under the action of a screw rod, which is convenient for fixing and connecting impellers of different thicknesses, and the driving cylinder drives the fixed pressure plate to move, so as to realize the function of supporting and fixing impellers of different apertures.

Description

Technical Field

[0001] The invention relates to a static balance test device, in particular to a pump runner static balance device. Background Art

[0002] The static balancing of the pump impeller needs to be performed on a conventional tight balancing machine. Due to the weight and large size of this product, it needs to be performed on a large-sized tight balancing machine. Different mandrels need to be prepared according to different specifications, so the cost is relatively high. Summary of the invention

[0003] The purpose of the present invention is to provide a pump impeller static balancing device, in which the sliding seat slides back and forth under the action of the screw to facilitate the fixed connection of impellers of different thicknesses, and the driving cylinder drives the fixed pressure plate to move, thereby realizing the support and fixation of impellers of different apertures. The setting of the guide rod guides the movement of the fixed pressure plate, thereby improving the stability of the movement of the fixed pressure plate.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A pump impeller static balancing device comprises a base with equal height and a support platform fixedly mounted on the base with equal height, wherein the base with equal height is provided in two groups;

[0006] The support platform is fixedly provided with a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate are arranged in parallel at two ends of the support platform, a connecting rod is arranged above the support platform, two ends of the connecting rod are respectively fixedly connected to the first vertical plate and the second vertical plate, a sliding seat is slidably connected to the connecting rod, and the lower end of the sliding seat is slidably connected to the upper surface of the support platform, two groups of the sliding seats are respectively fixedly installed with a first core shaft and a second core shaft, and a transition sleeve is fixedly installed on the first core shaft and the second core shaft.

[0007] Preferably, a motor is fixedly mounted on the first vertical plate, a screw is connected to the output end of the motor, the screw is rotatably connected to the first vertical plate and the second vertical plate, and the screw passes through the sliding seat and is threadedly connected to the sliding seat.

[0008] Preferably, the end of the first mandrel is provided with a connecting protrusion, and the end of the second mandrel is provided with a connecting groove matching with the connecting protrusion.

[0009] Preferably, the transition sleeve includes a bearing sleeve and a seat plate fixedly connected to the bearing sleeve, the bearing sleeve is provided with a bearing groove, a core shaft hole is provided at the bottom of the bearing groove, the core shaft hole passes through the seat plate, a bearing is fixedly installed in the bearing groove, and the bearing inner ring is connected to the first core shaft and the second core shaft.

[0010] Preferably, at least three groups of driving cylinders are installed in the annular array on the outer periphery of the bearing sleeve, and the output end of the driving cylinder is connected to a fixed pressure plate, and the fixed pressure plate is an arc-shaped plate.

[0011] Preferably, a guide rod is slidably connected to the seat plate, the position and number of the guide rod correspond to the driving cylinder, and one end of the guide rod is fixedly connected to the fixed pressure plate.

[0012] Preferably, a limiting baffle is fixedly provided on one end of the fixed pressure plate close to the bearing sleeve.

[0013] The beneficial effects of the present invention are as follows: a full-flow pump impeller that needs to be subjected to a static balancing test is placed between two groups of equal-height bases, the screw is driven to rotate by a motor, and the sliding seat is driven to move toward the impeller on the support platform by utilizing the screw transmission principle, so that the transition sleeve connected to the core shaft is inserted into the axial hole on the impeller, and the sliding seat slides back and forth under the action of the screw, which is convenient for fixing and connecting impellers of different thicknesses. When the static balancing test of the impeller is performed, the first core shaft and the second core shaft ends are connected, and the two groups of core shafts form a core shaft to prevent the coaxiality problem from affecting the test accuracy. The transition sleeve is inserted into the impeller, and the driving cylinder drives the fixed pressure plate to move, so as to support and fix the impellers of different apertures. The setting of the guide rod guides the movement of the fixed pressure plate and improves the stability of the movement of the fixed pressure plate. The setting of the limit baffle improves the clamping effect of the impeller, and the rotational connection between the transition sleeve and the core shaft is realized by setting the bearing, and the static balancing test of the impeller can be conveniently performed without rotating the core shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the assembly structure of the transition sleeve of the present invention;

[0017] Figure 3 It is a three-dimensional diagram of the transition sleeve of the present invention;

[0018] Figure 4 It is a schematic diagram of the axonometric structure of the transition sleeve of the present invention;

[0019] Figure 5 It is a front view of the transition sleeve of the present invention;

[0020] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure in the AA direction;

[0021] In the figure: 1. equal height base; 2. support table; 3. first vertical plate; 4. second vertical plate; 5. screw; 6. motor; 7. sliding seat; 8. first core shaft; 9. second core shaft; 10. connecting protrusion; 11. connecting groove; 12. transition sleeve; 13. bearing sleeve; 14. seat plate; 15. bearing groove; 16. core shaft hole; 17. driving cylinder; 18. fixed pressure plate; 19. guide rod; 20. limit baffle; 21. bearing. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-6 As shown, a pump impeller static balancing device comprises a uniform height base 1 and a support platform 2 fixedly mounted on the uniform height base 1, wherein the uniform height base 1 is provided with two groups;

[0024] The support platform 2 is fixedly provided with a first vertical plate 3 and a second vertical plate 4, and the first vertical plate 3 and the second vertical plate 4 are parallelly arranged at both ends of the support platform 2. A connecting rod is arranged above the support platform 2, and both ends of the connecting rod are respectively fixedly connected to the first vertical plate 3 and the second vertical plate 4. A sliding seat 7 is slidably connected to the connecting rod, and the lower end of the sliding seat 7 is slidably connected to the upper surface of the support platform 2. The two groups of sliding seats 7 are respectively fixedly installed with a first core shaft 8 and a second core shaft 9, and a transition sleeve 12 is fixedly installed on the first core shaft 8 and the second core shaft 9.

[0025] A motor 6 is fixedly mounted on the first vertical plate 3, and a screw 5 is connected to the output end of the motor 6. The screw 5 is rotatably connected to the first vertical plate 3 and the second vertical plate 4. The screw 5 passes through the sliding seat 7 and is threadedly connected to the sliding seat 7. The screw 5 is driven to rotate by the motor 6, and the sliding seat 7 is driven to slide back and forth on the support platform 2 by the screw transmission principle, so that the rotating wheels of different thicknesses can be fixedly connected.

[0026] The end of the first core shaft 8 is provided with a connecting protrusion 10, and the end of the second core shaft 9 is provided with a connecting groove 11 matched with the connecting protrusion 10. By setting the matching of the connecting protrusion 10 and the connecting groove 11, the ends of the first core shaft 8 and the second core shaft 9 are connected when the static balance test of the wheel is performed, and the two groups of core shafts form a core shaft to prevent coaxiality problems from affecting the test accuracy.

[0027] The transition sleeve 12 includes a bearing sleeve 13 and a seat plate 14 fixedly connected to the bearing sleeve 13. The bearing sleeve 13 is provided with a bearing groove 15. The bottom of the bearing groove 15 is provided with a core shaft hole 16. The core shaft hole 16 passes through the seat plate 14. A bearing 21 is fixedly installed in the bearing groove 15. The inner ring of the bearing 21 is connected to the first core shaft 8 and the second core shaft 9. The rotation connection between the transition sleeve 12 and the core shaft is realized by providing the bearing 21, and the static balance test of the runner can be conveniently performed without rotating the core shaft.

[0028] At least three groups of driving cylinders 17 are installed in a circular array on the outer periphery of the bearing sleeve 13. The output end of the driving cylinder 17 is connected to a fixed pressure plate 18. The fixed pressure plate 18 is an arc-shaped plate. The driving cylinder 17 drives the fixed pressure plate 18 to move, thereby supporting and fixing the wheels with different apertures.

[0029] A guide rod 19 is slidably connected to the seat plate 14, and the position and number of the guide rod 19 correspond to the driving cylinder 17. One end of the guide rod 19 is fixedly connected to the fixed pressure plate 18. The setting of the guide rod 19 guides the movement of the fixed pressure plate 18, thereby improving the stability of the movement of the fixed pressure plate 18.

[0030] A limit baffle 20 is fixedly disposed on one end of the fixed pressure plate 18 close to the bearing sleeve 13 . The setting of the limit baffle 20 improves the clamping effect on the rotating wheel.

[0031] When the present invention is in use, the full-flow pump impeller that needs to be subjected to a static balance test is placed between two groups of equal-height bases 1, the motor 6 drives the screw 5 to rotate, and the screw transmission principle is used to drive the sliding seat 7 to move toward the impeller on the support platform 2, so that the transition sleeve 12 connected to the core shaft is inserted into the shaft hole on the impeller. The sliding seat 7 slides back and forth under the action of the screw 5 to facilitate the fixed connection of impellers of different thicknesses. When the impeller is subjected to a static balance test, the ends of the first core shaft 8 and the second core shaft 9 are connected, and the two groups of core shafts form a core shaft. In order to prevent the coaxiality problem from affecting the test accuracy, the transition sleeve 12 is inserted into the rotating wheel, and the driving cylinder 17 drives the fixed pressure plate 18 to move, so as to support and fix the rotating wheels with different apertures. The setting of the guide rod 19 guides the movement of the fixed pressure plate 18, improves the stability of the movement of the fixed pressure plate 18, and the setting of the limit baffle 20 improves the clamping effect of the rotating wheel. The bearing 21 is provided to realize the rotational connection between the transition sleeve 12 and the core shaft, and the static balance test of the rotating wheel can be conveniently performed without rotating the core shaft.

[0032] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pump impeller static balancing device, characterized in that: It comprises a base with equal height (1) and a support platform (2) fixedly mounted on the base with equal height (1), wherein the base with equal height (1) is provided with two groups; The support platform (2) is fixedly provided with a first vertical plate (3) and a second vertical plate (4), the first vertical plate (3) and the second vertical plate (4) are arranged in parallel at both ends of the support platform (2), a connecting rod is arranged above the support platform (2), the two ends of the connecting rod are respectively fixedly connected to the first vertical plate (3) and the second vertical plate (4), a sliding seat (7) is slidably connected to the connecting rod, and the lower end of the sliding seat (7) is slidably connected to the upper surface of the support platform (2), one of the sliding seats (7) is fixedly installed with a first core shaft (8), and the other group of sliding seats (7) is fixedly installed with a second core shaft (9), and the first core shaft (8) and the second core shaft (9) are both fixedly installed with a transition sleeve (12); The transition sleeve (12) comprises a bearing sleeve (13) and a seat plate (14) fixedly connected to the bearing sleeve (13); the bearing sleeve (13) is provided with a bearing groove (15); a core shaft hole (16) is provided at the bottom of the bearing groove (15); the core shaft hole (16) passes through the seat plate (14); a bearing (21) is fixedly installed in the bearing groove (15); an inner ring of the bearing (21) is connected to the first core shaft (8) and the second core shaft (9); At least three groups of driving cylinders (17) are installed in an annular array on the outer periphery of the bearing sleeve (13); the output end of the driving cylinder (17) is connected to a fixed pressure plate (18); the fixed pressure plate (18) is an arc-shaped plate; A guide rod (19) is slidably connected to the seat plate (14), the position and number of the guide rod (19) correspond to the driving cylinder (17), and one end of the guide rod (19) is fixedly connected to the fixed pressure plate (18); A limit stopper (20) is fixedly provided on one end of the fixed pressure plate (18) close to the bearing sleeve (13).

2. A pump impeller static balancing device according to claim 1, characterized in that: A motor (6) is fixedly mounted on the first vertical plate (3), an output end of the motor (6) is connected to a screw rod (5), the screw rod (5) is rotatably connected to the first vertical plate (3) and the second vertical plate (4), and the screw rod (5) passes through the sliding seat (7) and is threadedly connected to the sliding seat (7).

3. A pump impeller static balancing device according to claim 1, characterized in that: The end of the first core shaft (8) is provided with a connecting protrusion (10), and the end of the second core shaft (9) is provided with a connecting groove (11) matching with the connecting protrusion (10).

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