CN221299571U - Multistage sealed magnetic drive pump sealing member - Google Patents

Abstract

The utility model relates to the field of sealing devices, in particular to a multistage-sealed magnetic pump sealing element, which comprises a spring seat, a stationary ring, a movable ring, a rotating shaft, a sealing assembly and a buffer assembly which are fixedly arranged on a pump body through two clamping assemblies, wherein the movable ring is inserted into the spring seat, the stationary ring is sleeved on the outer wall of the rotating shaft, the stationary ring is fixedly connected with the rotating shaft through four screws, the buffer assembly is arranged at the bottom of the movable ring, and the sealing assembly is arranged on the outer wall of the rotating shaft.

Description

Multistage sealed magnetic drive pump sealing member

Technical Field

The utility model relates to the field of sealing devices, in particular to a magnetic pump sealing element with multistage sealing.

Background

The magnetic drive pump is a novel sealless pump which realizes the contactless transmission of torque by applying the principle of permanent magnet transmission technology. The magnetic pump is mainly used for occasions requiring that the pump can only slightly leak or even not leak, and occasions with high vacuum which is difficult to be qualified by mechanical sealing. In recent years, the pump has been widely used in the industries of petroleum, chemical industry, electroplating, pharmacy, food, paper selection, printing and dyeing and the like abroad.

The existing magnetic pump sealing piece has the following defects:

1. when the rotating shaft rotates, a certain gap exists between the rotating shaft and the mechanical seal, oil leakage is easy to cause, pollution is caused to the mechanical seal, and resources are wasted.

2. The existing mechanical seal and the magnetic pump are completely fixedly connected through bolts, particularly between the spring seat and the pump body, when the spring seat is dismounted from the pump body, the bolts are required to be dismounted one by one, time and labor are wasted, the dismounting efficiency is reduced, and when parts inside the spring seat break down, the maintenance is inconvenient.

Disclosure of utility model

The utility model aims to provide a magnetic pump sealing element with multistage sealing.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a multistage sealed magnetic drive pump sealing member, include spring holder, quiet ring, moving ring, pivot, sealing component and the buffer unit of passing through two joint subassembly fixed mounting on the pump body, the moving ring is inserted and is established on the spring holder, quiet ring cover is established on the outer wall of pivot, and quiet ring passes through four screws and pivot fixed connection, and buffer unit establishes in the bottom of moving ring, and sealing component establishes on the outer wall of pivot.

Preferably, the buffer assembly comprises a slip ring, four balls and two buffer springs, the slip ring is fixedly arranged at the bottom of the slip ring, a limiting ring is fixedly arranged on the inner wall of the spring seat, two guide rods are symmetrically arranged at the bottom of the slip ring, each buffer spring is sleeved on the outer wall of one guide rod, the bottom end of each guide rod is inserted with the limiting ring, the four balls are rotatably arranged on the outer wall of the slip ring, and sliding grooves for the four balls to roll are symmetrically arranged on the inner wall of the spring seat.

Preferably, the sealing assembly comprises a first sealing ring, a second sealing ring and a third sealing ring, wherein the first sealing ring is arranged between the stationary ring and the movable ring, the second sealing ring is arranged between the sliding ring and the rotating shaft, the third sealing ring is arranged between the pump body and the rotating shaft, and the first sealing ring, the second sealing ring and the third sealing ring are all inserted with the rotating shaft.

Preferably, each clamping assembly comprises an inserted bar, a sleeve block, two limiting blocks, two sliding bars, two abutting springs and two inserting blocks, wherein the sleeve blocks are fixedly arranged on the outer wall of a spring seat, the inserted bar is fixedly arranged on the outer wall of a pump body, the two limiting blocks are respectively fixedly arranged at the two ends of the top of the inserted bar, through grooves for the inserted bar and the two limiting blocks to pass through are formed in the outer wall of the sleeve block, two limiting grooves are symmetrically formed in the inner wall of each through groove, each sliding block is slidably arranged in one limiting groove, each sliding bar is inserted in one limiting groove, each inserting block is fixedly arranged at one end of one sliding bar, each abutting spring is sleeved on the outer wall of one sliding bar, and a pulling block is fixedly arranged at the other end of each sliding bar.

Preferably, the outer wall of the spring seat is symmetrically provided with two positioning blocks, the outer wall of the pump body is fixedly provided with two plug-in columns, and each plug-in column is plugged with one positioning block.

Preferably, the top end of the movable ring is sleeved with a fourth sealing ring.

The utility model has the beneficial effects that:

1. According to the utility model, by designing the sealing assembly, namely the first sealing ring, the second sealing ring and the third sealing ring, when the rotating shaft rotates and the moving ring slides, gaps among the stationary ring, the moving ring, the pump body and the rotating shaft are sealed, the sealing effect is improved, multiple sealing effects are achieved, oil leakage is prevented, and free waste and pollution are avoided.

2. According to the utility model, by designing the two positioning blocks, the two plug-in columns and the two clamping assemblies, the two positioning blocks and the two plug-in columns can improve the installation accuracy of the spring seat and the pump body, and the two clamping assemblies can rapidly realize the disassembly and assembly of the spring seat and the pump body through the plug-in structure of the clamping type, so that when parts in the spring seat fail, the parts are convenient to rapidly disassemble and overhaul, the maintenance efficiency is improved, the service life of the parts is prolonged, and the use cost is reduced.

3. According to the utility model, by designing the buffer assembly, the sliding ring, the four balls and the two buffer springs, when vibration is generated between the rotating shaft and the pump body, the rotating shaft vibrates in the direction of the pump body, so that the moving ring is pushed to one end close to the spring seat through the stationary ring, the moving ring slides downwards in the spring seat through the four balls and is in contact with the two buffer springs to shrink, the buffer effect is achieved, the four balls slide with the four sliding grooves, smoothness of the moving ring during sliding is improved, friction force between the sliding ring and the inner wall of the spring seat is reduced, abrasion is reduced, and service life of the moving ring is prolonged.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description briefly describes the drawings in the embodiments of the present invention.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a top view of the present utility model;

FIG. 3 is a plan cross-sectional view taken along line A-A in FIG. 2;

FIG. 4 is a side view of the present utility;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is an enlarged view at C in FIG. 4; ;

In the figure: the clamping assembly 1, the spring seat 2, the stationary ring 3, the movable ring 4, the rotating shaft 5, the sealing assembly 6, the buffer assembly 7, the sliding ring 8, the ball 9, the buffer spring 10, the limiting ring 11, the first sealing ring 12, the second sealing ring 13, the third sealing ring 14, the inserting rod 15, the sleeve block 16, the limiting block 17, the sliding rod 18, the abutting spring 19, the inserting block 20, the pulling block 21, the positioning block 22, the inserting column 23 and the fourth sealing ring 24.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced in size and do not represent the actual product dimensions.

Referring to fig. 1 to 6, a multistage sealed magnetic pump sealing member comprises a spring seat 2, a stationary ring 3, a movable ring 4, a rotating shaft 5, a sealing component 6 and a buffer component 7 which are fixedly installed on a pump body 25 through two clamping components 1, wherein the movable ring 4 is inserted on the spring seat 2, the stationary ring 3 is sleeved on the outer wall of the rotating shaft 5, the stationary ring 3 is fixedly connected with the rotating shaft 5 through four screws, the buffer component 7 is arranged at the bottom of the movable ring 4, and the sealing component 6 is arranged on the outer wall of the rotating shaft 5.

Referring to fig. 1 to 6, the buffer assembly 7 includes a slip ring 8, four balls 9 and two buffer springs 10, the slip ring 8 is fixedly arranged at the bottom of the movable ring 4, a limiting ring 11 is fixedly arranged on the inner wall of the spring seat 2, two guide rods are symmetrically arranged at the bottom of the slip ring 8, each buffer spring 10 is sleeved on the outer wall of one guide rod, the bottom end of each guide rod is spliced with the limiting ring 11, the four balls 9 are rotationally arranged on the outer wall of the slip ring 8, sliding grooves for the four balls 9 to roll are symmetrically arranged on the inner wall of the spring seat 2, when vibration is generated between the rotating shaft 5 and the pump body 25, the rotating shaft 5 vibrates towards the direction of the pump body 25, so that the movable ring 4 is pushed to one end close to the spring seat 2 through the stationary ring 3, the movable ring 4 slides down in the spring seat 2 through the four balls 9 and contracts against the two buffer springs 10, the four balls 9 slide with the four sliding grooves, the smoothness of the sliding of the movable ring 4 is reduced, the friction force between the spring seat 8 and the inner wall of the movable ring 2 is reduced, and the service life of the movable ring is prolonged.

Referring to fig. 1 to 6, the seal assembly 6 includes a first seal ring 12, a second seal ring 13 and a third seal ring 14, the first seal ring 12 is disposed between the stationary ring 3 and the moving ring 4, the second seal ring 13 is disposed between the slip ring 8 and the rotating shaft 5, the third seal ring 14 is disposed between the pump body 25 and the rotating shaft 5, the first seal ring 12, the second seal ring 13 and the third seal ring 14 are inserted into the rotating shaft 5, and the first seal ring 12, the second seal ring 13 and the third seal ring 14 seal the gap between the stationary ring 3, the moving ring 4 and the pump body 25 and the rotating shaft 5 when the rotating shaft 5 rotates and the moving ring 4 slides, thereby improving the sealing effect, achieving multiple sealing effects, preventing oil leakage and avoiding free waste and pollution.

Referring to fig. 1 to 6, each clamping assembly 1 includes a plug rod 15, a sleeve block 16, two limiting blocks 17, two slide bars 18, two abutting springs 19 and two plug blocks 20, the sleeve block 16 is fixedly arranged on the outer wall of the spring seat 2, the plug rod 15 is fixedly arranged on the outer wall of the pump body 25, the two limiting blocks 17 are respectively fixedly arranged at the two ends of the top of the plug rod 15, through grooves for the plug rod 15 and the two limiting blocks 17 to pass through are arranged on the outer wall of the sleeve block 16, two limiting grooves are symmetrically arranged on the inner wall of the through grooves, each slide block is slidably arranged in one limiting groove, each slide bar 18 is inserted in one limiting groove, each plug block 20 is fixedly arranged at one end of one slide bar 18, each abutting spring 19 is sleeved on the outer wall of one slide bar 18, a pull block 21 is fixedly arranged at the other end of each slide bar 18, when the spring seat 2 is pressed downwards, the oblique angles arranged on the two limiting blocks 17 are contacted with the oblique angles arranged on the two inserting blocks 20, the two inserting blocks 20 are driven to slide towards one end close to the pulling block 21 in the two limiting grooves under the abutting action of the two limiting blocks 17, so that the two abutting springs 19 are driven to shrink until the two limiting blocks 17 slide to the top ends of the two inserting blocks 20, at the moment, the oblique angles on the two inserting blocks 20 are not contacted with the oblique angles on the two limiting blocks 17 any more, so that the two abutting springs 19 reset to push and abut the two inserting blocks 20 towards one end close to the bottoms of the two limiting blocks 17, lifting and locking of the two limiting blocks 17 are realized, quick assembly of the spring seat 2 and the pump body 25 is realized, when the sealing piece is required to be detached from the pump body 25, the detachment of the dead ring 3 and the rotating shaft 5 is realized by four screws directly, then the two pulling blocks 21 are shifted towards one end far away from each other, the two plug blocks 20 can be retracted into the two limiting grooves, unlocking with the two limiting blocks 17 is achieved, the spring seat 2 is directly pulled out of the pump body 25, and quick disassembly of the spring seat 2 and the pump body 25 is achieved.

Referring to fig. 1 to 6, two positioning blocks 22 are symmetrically arranged on the outer wall of the spring seat 2, two plug-in columns 23 are fixedly arranged on the outer wall of the pump body 25, each plug-in column 23 is plugged with one positioning block 22, and when the spring seat 2 is installed, the two positioning blocks 22 on the spring seat 2 are manually aligned with the two plug-in columns 23 on the pump body 25, and then the spring seat 2 is pressed downwards.

Referring to fig. 1 to 6, a fourth sealing ring 24 is sleeved on the top end of the moving ring 4, the fourth sealing ring 24 hoops the stationary ring 3 on the rotating shaft 5, and the tightness and stability of the stationary ring 3 and the rotating shaft 5 are improved.

Claims (6)

1. A multistage sealed magnetic pump seal, characterized in that: including spring holder (2), quiet ring (3), rotating ring (4), pivot (5), seal assembly (6) and buffer assembly (7) through two joint subassembly (1) fixed mounting on pump body (25), rotating ring (4) are inserted and are established on spring holder (2), quiet ring (3) cover is established on the outer wall of pivot (5), and quiet ring (3) are through four screw and pivot (5) fixed connection, and buffer assembly (7) are established in the bottom of rotating ring (4), and seal assembly (6) are established on the outer wall of pivot (5).

2. A multi-stage sealed magnetic pump seal as claimed in claim 1, wherein: the buffer assembly (7) comprises a slip ring (8), four balls (9) and two buffer springs (10), wherein the slip ring (8) is fixedly arranged at the bottom of the slip ring (4), a limiting ring (11) is fixedly arranged on the inner wall of a spring seat (2), two guide rods are symmetrically arranged at the bottom of the slip ring (8), each buffer spring (10) is sleeved on the outer wall of one guide rod, the bottom of each guide rod is spliced with the limiting ring (11), the four balls (9) are rotationally arranged on the outer wall of the slip ring (8), and sliding grooves for the four balls (9) to roll are symmetrically arranged on the inner wall of the spring seat (2).

3. A multi-stage sealed magnetic pump seal as claimed in claim 2, wherein: the sealing assembly (6) comprises a first sealing ring (12), a second sealing ring (13) and a third sealing ring (14), wherein the first sealing ring (12) is arranged between the stationary ring (3) and the movable ring (4), the second sealing ring (13) is arranged between the slip ring (8) and the rotating shaft (5), the third sealing ring (14) is arranged between the pump body (25) and the rotating shaft (5), and the first sealing ring (12), the second sealing ring (13) and the third sealing ring (14) are all spliced with the rotating shaft (5).

4. A multi-stage sealed magnetic pump seal as claimed in claim 3, wherein: each clamping assembly (1) comprises an inserting rod (15), a sleeve block (16), two limiting blocks (17), two sliding rods (18), two propping springs (19) and two inserting blocks (20), wherein the sleeve block (16) is fixedly arranged on the outer wall of a spring seat (2), the inserting rod (15) is fixedly arranged on the outer wall of a pump body (25), the two limiting blocks (17) are respectively fixedly arranged at the two ends of the top of the inserting rod (15), through grooves for the inserting rod (15) and the two limiting blocks (17) to penetrate are formed in the outer wall of the sleeve block (16), two limiting grooves are symmetrically formed in the inner wall of each through groove, each sliding block is slidably arranged in one limiting groove, each sliding rod (18) is inserted in one limiting groove, each inserting block (20) is fixedly arranged at one end of one sliding rod (18), each propping spring (19) is sleeved on the outer wall of one sliding rod (18), and a pulling block (21) is fixedly arranged at the other end of each sliding rod (18).

5. The multi-stage sealed magnetic pump seal of claim 4, wherein: two positioning blocks (22) are symmetrically arranged on the outer wall of the spring seat (2), two plug-in columns (23) are fixedly arranged on the outer wall of the pump body (25), and each plug-in column (23) is plugged with one positioning block (22).

6. A multi-stage sealed magnetic pump seal as defined in claim 5, wherein: a fourth sealing ring (24) is sleeved at the top end of the movable ring (4).