Anti-winding magnetic drive pump head

Abstract

The utility model discloses an anti-winding magnetic force driving pump head which comprises a pump shell with an inner cavity, a driving shaft arranged in the pump shell and an impeller installed in the inner cavity and connected with the driving shaft, and the impeller comprises a wheel disc, a plurality of blades arranged on one side face of the wheel disc and distributed at intervals in a surrounding mode and blade grooves formed between the adjacent blades. The impeller is provided with an ejection assembly, the ejection assembly is provided with ejection blocks distributed in the blade grooves, the ejection assembly can reciprocate along the axis of the driving shaft while rotating along with the impeller, and the ejection assembly is provided with a retraction position for driving the ejection blocks to be located in the blade grooves and an ejection position for driving the ejection blocks to be located outside the blade grooves. And the ejection assembly is connected with a driving assembly for driving the ejection assembly to reciprocate along the axis of the driving shaft. The utility model has the following advantages and effects: the impeller winding phenomenon can be reduced, so that the stable rotation of the impeller is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a magnetic drive pump, especially relates to a kind of anti-winding magnetic drive pump pump head. BACKGROUND

[0002] Magnetic drive pump is a new type of sealless pump that realizes the non-contact transmission of torque by applying permanent magnet transmission technology principle.There is no mechanical coupling between driving shaft and driven shaft, and there is no dynamic seal in the structure, so the pump can realize zero leakage and can be used in working conditions that mechanical seal is difficult to handle.Due to the special advantages of magnetic drive pump, it can be widely used in various fields.

[0003] The principle of pump to realize fluid transmission mainly depends on the blade structure on the impeller, and the fluid enters the blade groove between adjacent blades, and is thrown out under the action of centrifugal force of impeller to realize the transmission of fluid medium.Some complex working conditions, there are many sundries in fluid medium, and these sundries are easy to wrap around the impeller and affect the stable rotation of the impeller.According to the above problems, the present invention is born. SUMMARY

[0004] The utility model discloses a kind of anti-winding magnetic drive pump pump head, the anti-winding magnetic drive pump pump head can reduce the occurrence of impeller winding phenomenon, to guarantee the stable rotation of impeller.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: an anti-winding magnetic drive pump pump head, comprising a pump shell with an inner cavity, a drive shaft arranged on the pump shell, and an impeller mounted in the inner cavity and connected to the drive shaft, the impeller comprises a disc, a plurality of blades arranged on one side of the disc and spaced around, and a blade groove formed between adjacent blades, the impeller is provided with an ejection assembly, and the ejection assembly has a plurality of top blocks arranged in each blade groove, the ejection assembly can move back and forth along the axis of the drive shaft while rotating with the impeller, the ejection assembly has a retracted position where the top block is located in the blade groove and an ejection position where the top block is located outside the blade groove, and the ejection assembly is connected with a driving assembly for driving the ejection assembly to move back and forth along the axis of the drive shaft.

[0006] By adopting the above technical scheme, the ejection assembly can move along the axis of the drive shaft under the drive of the driving assembly while rotating with the impeller to switch between the retracted position and the ejection position. This arrangement ensures that the movement of the ejection assembly does not interfere with the rotation of the impeller, thereby ensuring the feasibility and reliability of the structure. The ejection assembly in motion can eject the sundries wrapped in the blade groove out of the blade groove, so that the sundries are discharged with the fluid from the pump head, thereby ensuring the stable rotation of the impeller and avoiding the wrapping of the impeller.

[0007] Further, the wheel disc is sealingly and rotatably connected with the pump shell, and the driving assembly is located outside the inner cavity.

[0008] By using the above technical scheme, the driving assembly is prevented from contacting with the fluid medium, so that the driving assembly has a better working environment, thereby prolonging the service life.

[0009] Further, the ejecting assembly comprises a moving disc sleeved on the driving shaft and located outside the inner cavity, and a connecting rod penetrating through the wheel disc and used for connecting the moving disc with each ejecting block, and the connecting rod is sealingly and slidingly connected with the wheel disc.

[0010] By using the above technical scheme, the ejecting block is controlled, and the sealing property of the connecting structure is ensured.

[0011] Further, the driving assembly comprises a driving cylinder used for moving the moving disc along the driving shaft axis towards one end, and a reset spring used for resetting the moving disc.

[0012] By using the above technical scheme, the driving cylinder abuts against the moving disc to control the ejecting block to move along the driving shaft axis towards one end, and the reset spring is arranged to realize the reciprocating driving of the ejecting assembly through the moving disc.

[0013] Further, the driving cylinder output shaft abuts against one end surface of the moving disc, and a rolling element is arranged at the position where the driving cylinder output shaft abuts against the moving disc.

[0014] By using the above technical scheme, the rolling element is arranged to convert the sliding friction into rolling friction, thereby reducing the mutual abrasion and prolonging the service life.

[0015] Further, one end of the reset spring abuts against the driving shaft, and the other end of the reset spring abuts against the moving disc, and the driving shaft and the moving disc are both formed with a positioning groove for embedding the reset spring.

[0016] By using the above technical scheme, the stability of the reset spring installation is ensured.

[0017] Further, the inner cavity wall opposite to one side of the vane is provided with a crushing tooth.

[0018] By using the above technical scheme, the ejecting block pushes the sundries to move towards the side of the crushing tooth, and the sundries are crushed by contacting with the crushing tooth, thereby avoiding the blocking phenomenon of the sundries during the process of discharging the pump head.

[0019] Further, the wheel disc is provided with an embedding groove corresponding to the position of the ejecting block.

[0020] By adopting the technical scheme, the slot is arranged to avoid winding sundries on the top block in the retracted state, thereby avoiding the occurrence of secondary winding.

[0021] In conclusion, the utility model has the following beneficial effects: the utility model can reduce the occurrence of the impeller winding phenomenon, thereby ensuring the stable rotation of the impeller. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Structure schematic view for example;

[0023] Figure 2 For Figure 1 Enlarged view of A part in the middle.

[0024] In the drawing: 1, inner cavity; 2, pump shell; 31, wheel disc; 32, blade; 33, blade slot; 4, ejection assembly; 41, top block; 42, action disc; 43, connecting rod; 5, driving assembly; 51, driving cylinder; 52, reset spring; 6, rolling piece; 7, positioning slot; 8, crushing tooth; 9, slot; 10, driving shaft. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in combination with the drawings.

[0026] Reference Figure 1 And Figure 2 A kind of anti-winding magnetic force drive pump head, including the pump shell 2 with inner cavity 1, driving shaft 10 being sealed rotationally arranged in pump shell 2 and impeller being installed in inner cavity 1 and fixedly connected driving shaft 10. Impeller includes wheel disc 31, a plurality of blades 32 being integrally arranged in one side of wheel disc 31 and being spacedly distributed around and blade slot 33 being formed between adjacent blades 32, and wheel disc 31 is fixedly connected with driving shaft 10. Ejection assembly 4 is provided on impeller and has top block 41 being distributedly arranged in each blade slot 33, and ejection assembly 4 can reciprocate along the axis of driving shaft 10 while rotating with impeller. Ejection assembly 4 has retracted position of driving top block 41 in blade slot 33 and ejection position outside blade slot 33, and driving assembly 5 is connected to ejection assembly 4 to reciprocate along the axis of driving shaft 10.

[0027] Wheel disc 31 is sealingly rotationally matched with pump shell 2, and driving assembly 5 is located outside inner cavity 1. The side of wheel disc 31 opposite to blade 32 is sealingly rotationally matched with pump shell 2 by sealed plane bearing, and the two end faces of sealed plane bearing are fixedly connected with wheel disc 31 and pump shell 2 respectively. Ejection assembly 4 includes action disc 42 being sleeved on driving shaft 10 and located outside inner cavity 1 and connecting rod 43 being used for fixedly connecting action disc 42 and each top block 41 and passing through wheel disc 31, and connecting rod 43 is sealingly slidingly matched with wheel disc 31, i.e. sealing ring is arranged between connecting rod 43 and wheel disc 31.

[0028] The driving assembly 5 comprises a driving cylinder 51 for moving the driving action disc 42 along the driving shaft 10 axis towards one side and a reset spring 52 for resetting the action disc 42, and the driving cylinder 51 is fixedly arranged on the pump shell 2. The output shaft of the driving cylinder 51 abuts against one end surface of the action disc 42, and the position of the output shaft of the driving cylinder 51 abutting against the action disc 42 is rollingly embedded with a rolling element 6, which is a ball.

[0029] One end of the reset spring 52 abuts against the driving shaft 10, and the other end abuts against the action disc 42, and the driving shaft 10 and the action disc 42 are both provided with a positioning groove 7 for embedding the reset spring 52. The wall of the inner cavity 1 is provided with a crushing tooth 8 on the side corresponding to the vane 32, the crushing tooth 8 is arranged in a plurality of intervals around the center of the driving shaft 10 and is fixedly arranged on the pump shell 2. The wheel disc 31 is provided with an embedded groove 9 for embedding the top block 41 at the position corresponding to the top block 41.

[0030] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. An anti-winding magnetically driven pump head, comprising a pump casing (2) having an inner cavity (1), a drive shaft (10) disposed in the pump casing (2), and an impeller mounted in the inner cavity (1) and connected to the drive shaft (10), the impeller comprising a disc (31), a plurality of blades (32) disposed on one side of the disc (31) and spaced around it, and blade grooves (33) formed between adjacent blades (32), characterized in that: The impeller is provided with an ejector assembly (4) and the ejector assembly (4) has a top block (41) distributed in each blade groove (33). The ejector assembly (4) can reciprocate along the axis of the drive shaft (10) while rotating with the impeller. The ejector assembly (4) has a retracted position where the drive top block (41) is located in the blade groove (33) and an ejected position where it is located outside the blade groove (33). The ejector assembly (4) is connected to a drive assembly (5) that drives the ejector assembly (4) to reciprocate along the axis of the drive shaft (10).

2. The anti-winding magnetic drive pump head according to claim 1, characterized in that: The wheel (31) is sealed and rotates with the pump housing (2), and the drive assembly (5) is located outside the inner cavity (1).

3. The anti-winding magnetic drive pump head according to claim 2, characterized in that: The ejection assembly (4) includes an actuating disc (42) fitted onto the drive shaft (10) and located outside the inner cavity (1), and a connecting rod (43) passing through the wheel (31) to connect the actuating disc (42) to each ejector block (41), wherein the connecting rod (43) is in a sealed sliding fit with the wheel (31).

4. The anti-winding magnetic drive pump head according to claim 3, characterized in that: The drive assembly (5) includes a drive cylinder (51) that drives the actuation disc (42) to move toward one end along the axis of the drive shaft (10) and a reset spring (52) for resetting the actuation disc (42).

5. The anti-winding magnetic drive pump head according to claim 4, characterized in that: The output shaft of the drive cylinder (51) abuts against one end face of the action plate (42), and a rolling element (6) is provided at the position where the output shaft of the drive cylinder (51) abuts against the action plate (42).

6. The anti-winding magnetic drive pump head according to claim 4, characterized in that: One end of the return spring (52) abuts against the drive shaft (10) and the other end abuts against the actuation disk (42). Both the drive shaft (10) and the actuation disk (42) have positioning grooves (7) for the return spring (52) to be inserted.

7. The anti-winding magnetic drive pump head according to claim 1, characterized in that: The inner cavity (1) wall is provided with a breaking tooth (8) on the side corresponding to the blade (32).

8. The anti-winding magnetic drive pump head according to claim 1, characterized in that: The wheel (31) is provided with a groove (9) for the top block (41) to be inserted at the position corresponding to the top block (41).

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