Magnetic gear pump capable of automatically compensating and preventing internal leakage

Abstract

The utility model discloses a magnetic gear pump capable of automatically compensating and preventing internal leakage, belongs to the technical field of gear pumps, and solves the problems that a gap is easily generated on the end surfaces of a driving gear and a driven gear due to mechanical wear of the driving gear and the driven gear of the existing device, so that internal leakage occurs, the suction force is reduced, and the service life is prolonged. The magnetic gear pump comprises a magnetic gear pump body, a front end cover is arranged at the right end of the magnetic gear pump body, a driving shaft is fixedly connected to the output end of the magnetic gear pump body, the outer surface of the driving shaft is fixedly sleeved with a driving gear, and a driven gear meshed with the driving gear is arranged on one side of the driving gear; a compensation assembly is arranged on the sides, away from the front end cover, of the driving gear and the driven gear and comprises a bolt, a special-shaped spring and a compensation piece, the compensation piece is extruded through the special-shaped spring, then extremely small gaps are kept between the driving gear and the front end cover and between the driven gear and the front end cover all the time, and high pressure is generated at the inlet end of the pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear pump technical field, concretely is a kind of automatic compensation prevents internal leakage's magnetic gear pump. BACKGROUND

[0002] Magnetic gear pump realizes contactless torque transmission by magnetic drive, and replaces dynamic seal with static seal. Inside magnetic drive, driven yoke and driving yoke are connected and driven by magnetic force line, to realize the rotation of gear, thereby driving liquid delivery.

[0003] Through the search, the application book with patent application No.202420729912.1 discloses a kind of magnetic gear pump, belongs to gear pump technical field. It solves the problem of lacking isolation in existing magnetic gear pump. The utility model includes pump body, magnetic coupling and driving motor, magnetic coupling is fixedly installed between pump body and driving motor, magnetic coupling includes shell body, driving magnet, driven magnet and inner isolation sleeve, shell body end is formed with connecting face, connecting face is fixedly bonded with one side of pump body, driving magnet is fixed in shell body interior, driving magnet is composed of several cores and driving magnet shell body, inner isolation sleeve is fixedly installed in driving magnet shell body interior, driven magnet is provided with shaft hole in middle, driven magnet is fixedly installed in inner isolation sleeve interior, pump body interior is installed with driving gear and driven gear, driving gear shaft and driven gear shaft are provided in driving gear and driven gear, driving gear shaft and shaft hole are connected;

[0004] Although the magnetic gear pump is provided with magnetic coupling, installs inner isolation sleeve between driving magnet and driven magnet, realizes the purpose of no leakage of liquid in power transmission process, but due to mechanical wear, the end surface of driving gear and driven gear of the magnetic gear pump is prone to gap, internal leakage occurs, thereby causing suction to decrease, outlet pressure loss. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of magnetic gear pump of automatic compensation prevents internal leakage, solves the problem that the end surface of driving gear and driven gear of existing device is prone to gap due to mechanical wear, internal leakage occurs, thereby causing suction to decrease, outlet pressure loss.

[0006] In order to achieve the above object, the utility model discloses a kind of automatic compensation prevents inner leakage's magnetic gear pump, including magnetic gear pump main body, the bottom of the magnetic gear pump main body is fixedly installed with base, the right end of the magnetic gear pump main body is provided with front end cover, the output end of the magnetic gear pump main body is fixedly connected with driving shaft, the outer surface of the driving shaft is fixedly sleeved with driving gear, the driving gear is provided with driven gear meshing with it on one side, the driven gear is rotatably sleeved on the outer surface of driven shaft, the driven shaft is rotatably installed on the side surface of front end cover, and the driving gear and driven gear are all closely attached to the end face of front end cover.

[0007] The side, away from the front end cover, of the driving gear and driven gear is provided with a compensation assembly.

[0008] The compensation assembly includes a bolt, a special-shaped spring and a compensation sheet, the bolt is threadedly connected to the side wall of the front end cover, the special-shaped spring is provided on the bolt, the side, away from the front end cover, of the driving gear and driven gear is provided with the compensation sheet, the compensation sheet is attached to the end face of the driving gear and driven gear, and the two ends of the special-shaped spring are both provided on the compensation sheet.

[0009] Preferably, the middle part of the special-shaped spring is twisted into a ring shape and is sleeved on the outer surface of the bolt, the two ends of the special-shaped spring are respectively provided with a first bending part and a second bending part, the second bending part contacts the top side of the compensation sheet, a rectangular groove is formed in the middle part of the side, away from the front end cover, of the compensation sheet, and the first bending part is clamped in the inside of the rectangular groove.

[0010] Preferably, a semicircular first groove is formed in the bottom end of the side, close to the front end cover, of the compensation sheet, one end of the driven shaft, away from the front end cover, is located in the inside of the first groove and does not contact the inner wall of the first groove, and a semicircular second groove is also formed in the bottom end of the side, close to the front end cover, of the compensation sheet and is located on the right side of the first groove, and the driving shaft is located in the inside of the second groove.

[0011] Preferably, the compensation sheet is provided with a protruding part near the top of the side of the front end cover, the protruding part is an integral molding structure with the compensation sheet, the bottom side of the protruding part is provided with two third grooves in semicircle shape and corresponding to the positions of the driving gear and the driven gear respectively, and the arc surfaces of the driving gear and the driven gear are located inside the third grooves corresponding to their positions respectively, wherein the third grooves are beneficial to reduce the gap between the driving gear and the driven gear.

[0012] The utility model provides a kind of automatic compensation prevents internal leakage's magnetic gear pump.It has the following beneficial effects:

[0013] The automatic compensation prevents internal leakage's magnetic gear pump, by special-shaped spring, can force from multiple directions, the compensation sheet is pushed to the side close to driving gear and driven gear, in turn, by compensation sheet, driving gear and driven gear are pressed, driving gear and driven gear and front end cover keep minimum gap at all times, can make driving gear and driven gear when working produce minimum internal leakage, make pump import end produce high pressure, solve the end surface of driving gear and driven gear of the driving gear and driven gear of prior art device due to mechanical wear and tear, driving gear and driven gear gap is prone to, internal leakage will appear, thereby leading to suction reduction, outlet pressure loss problem. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model;

[0015] Figure 2 It is the split structure schematic view of the utility model;

[0016] Figure 3 It is the compensation assembly structure schematic view of the utility model;

[0017] Figure 4 It is the compensation assembly front structure schematic view of the utility model;

[0018] Figure 5 It is the compensation assembly back structure schematic view of the utility model;

[0019] Figure 6 It is the special-shaped spring structure schematic view of the utility model.

[0020] In the drawing: 1, magnetic gear pump main body;11, driving shaft;12, driving gear;13, driven shaft;14, driven gear;15, base;2, compensation assembly;21, bolt;22, special-shaped spring;221, first bending part;222, second bending part;23, compensation sheet;231, first recess;232, second recess;233, protruding part;234, third groove;235, rectangular groove;3, front end cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0022] Embodiment 1

[0023] As Figures 1-6As shown: including magnetic gear pump body 1, the bottom of magnetic gear pump body 1 is fixedly installed with base 15, the right end of magnetic gear pump body 1 is provided with front end cover 3, the output end of magnetic gear pump body 1 is fixedly connected with driving shaft 11, the outer surface of driving shaft 11 is fixedly sleeved with driving gear 12, one side of driving gear 12 is provided with driven gear 14 engaged with it, driven gear 14 is rotatably sleeved on the outer surface of driven shaft 13, driven shaft 13 is rotatably installed on the side surface of front end cover 3, driving gear 12 and driven gear 14 are in close contact with the end surface of front end cover 3, the side, away from front end cover 3, of driving gear 12 and driven gear 14 is provided with compensation assembly 2, compensation assembly 2 includes bolt 21, special-shaped spring 22 and compensation sheet 23, bolt 21 is threadedly connected on the side wall of front end cover 3, bolt 21 is provided with special-shaped spring 22, the side, away from front end cover 3, of driving gear 12 and driven gear 14 is provided with compensation sheet 23, compensation sheet 23 is in contact with the end surface of driving gear 12 and driven gear 14, both ends of special-shaped spring 22 are arranged on compensation sheet 23, the middle part of special-shaped spring 22 is twisted into a ring shape and is sleeved on the outer surface of bolt 21, both ends of special-shaped spring 22 are respectively provided with first bending part 221 and second bending part 222, second bending part 222 is in contact with the top side of compensation sheet 23, the middle part of the side, away from front end cover 3, of compensation sheet 23 is provided with rectangular groove 235, first bending part 221 is clamped in the inside of rectangular groove 235, the bottom end of the side, close to front end cover 3, of compensation sheet 23 is provided with semicircular first groove 231, one end of driven shaft 13, away from front end cover 3, is located in the inside of first groove 231 and does not contact the inner wall of first groove 231, the bottom end of the side, close to front end cover 3, of compensation sheet 23 is also provided with semicircular second groove 232 located on the right side of first groove 231, driving shaft 11 is located in the inside of second groove 232, the top end of the side, close to front end cover 3, of compensation sheet 23 is provided with protruding part 233, protruding part 233 is an integral molding structure with compensation sheet 23, the bottom side of protruding part 233 is provided with two semicircular third grooves 234 corresponding to the positions of driving gear 12 and driven gear 14 respectively, the curved surfaces of driving gear 12 and driven gear 14 are respectively located in the inside of third grooves 234 corresponding to their positions, compensation sheet 23 is pushed to the side close to driving gear 12 and driven gear 14 by special-shaped spring 22 from multiple directions, then driving gear 12 and driven gear 14 are pressed by compensation sheet 23, so that driving gear 12 and driven gear 14 and front end cover 3 always keep a very small gap, which can make driving gear 12 and driven gear 14 produce very small internal leakage when working, so that high pressure is generated at the inlet end of the pump;

[0024] The working principle and use process of the utility model: the automatic compensation prevents the magnetic gear pump of internal leakage, the magnetic gear pump main body 1 is started to drive the rotation of the driving shaft 11 and the rotation of the driving gear 12 on its surface, and then the driving gear 12 drives the driven gear 14 and the driven shaft 13 to rotate together, the end face of the driving gear 12 and the driven gear 14 is close to the end face of the compensation sheet 23 and the front end cover 3, when the gap is generated between the driving gear 12 and the driven gear 14 due to mechanical wear, through the setting of the torsion of the special-shaped spring 22, the first bending part 221 can push the compensation sheet 23 to the side close to the end face of the driving gear 12 and the driven gear 14, the second bending part 222 can push the compensation sheet 23 to the side close to the arc surface of the driving gear 12 and the driven gear 14, and then the compensation sheet 23 presses the driving gear 12 and the driven gear 14, so that the driving gear 12 and the driven gear 14 and the front end cover 3 keep a very small gap at all times, when the driving gear 12 and the driven gear 14 work, a very small internal leakage is generated, and high pressure is generated at the pump inlet end.

[0025] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. An automatic compensation magnetic gear pump for preventing internal leakage, comprising a magnetic gear pump body (1), a base (15) is fixedly installed at the bottom of the magnetic gear pump body (1), a front end cover (3) is arranged at the right end of the magnetic gear pump body (1), a driving shaft (11) is fixedly connected to the output end of the magnetic gear pump body (1), a driving gear (12) is fixedly sleeved on the outer surface of the driving shaft (11), a driven gear (14) engaged with the driving gear (12) is arranged on one side of the driving gear (12), the driven gear (14) is rotatably sleeved on the outer surface of a driven shaft (13), the driven shaft (13) is rotatably installed on the side surface of the front end cover (3), and the driving gear (12) and the driven gear (14) are tightly attached to the end surface of the front end cover (3). characterized in that A compensation assembly (2) is arranged on the side, away from the front end cover (3), of the driving gear (12) and the driven gear (14). The compensation assembly (2) comprises a bolt (21), a special-shaped spring (22) and a compensation sheet (23), the bolt (21) is threadedly connected to the side wall of the front end cover (3), the special-shaped spring (22) is arranged on the bolt (21), the compensation sheet (23) is arranged on the side, away from the front end cover (3), of the driving gear (12) and the driven gear (14), the compensation sheet (23) is tightly attached to the end surface of the driving gear (12) and the driven gear (14), and the two ends of the special-shaped spring (22) are arranged on the compensation sheet (23).

2. A magnetic gear pump according to claim 1, wherein: The middle part of the special-shaped spring (22) is twisted into a ring shape and sleeved on the outer surface of the bolt (21), the two ends of the special-shaped spring (22) are respectively provided with a first bending part (221) and a second bending part (222), the second bending part (222) is in contact with the top side of the compensation sheet (23), a rectangular groove (235) is formed in the middle part of the compensation sheet (23) on the side, away from the front end cover (3), and the first bending part (221) is clamped in the rectangular groove (235).

3. The magnetic gear pump of claim 1, wherein: A semicircular first groove (231) is formed in the bottom end of the compensation sheet (23) on the side close to the front end cover (3), one end of the driven shaft (13), away from the front end cover (3), is located in the first groove (231) and does not contact the inner wall of the first groove (231), and a semicircular second groove (232) is formed in the bottom end of the compensation sheet (23) on the side close to the front end cover (3) and penetrates the right side of the first groove (231), and the driving shaft (11) is located in the second groove (232).

4. The magnetic gear pump of claim 1, wherein: A protruding part (233) is arranged on the top end of the compensation sheet (23) on the side close to the front end cover (3), the protruding part (233) is an integral molding structure with the compensation sheet (23), two semicircular third grooves (234) corresponding to the positions of the driving gear (12) and the driven gear (14) are formed in the bottom side of the protruding part (233), and the curved surfaces of the driving gear (12) and the driven gear (14) are respectively located in the third grooves (234) corresponding to the positions of the driving gear (12) and the driven gear (14).

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