CN216894860U

CN216894860U - Axial plunger pump sealing device

Info

Publication number: CN216894860U
Application number: CN202123101074.9U
Authority: CN
Inventors: 顾海烨; 谢军; 沈凯; 李建纲
Original assignee: Jiangsu Hengyuan Hydraulic Co ltd
Current assignee: Jiangsu Hengyuan Hydraulic Co ltd
Priority date: 2021-12-11
Filing date: 2021-12-11
Publication date: 2022-07-05
Anticipated expiration: 2031-12-11

Abstract

The utility model discloses an axial plunger pump sealing device, which comprises a shell and a sealing mechanism, wherein the shell is provided with a sealing hole; the casing is coated with a chromium layer, the annular boss on the right side of the casing is provided with uniformly distributed mounting holes, and the left side of the casing is provided with a round hole. A sealing mechanism: the pressing plate is connected to the inner arc surface of the chromium layer in a sliding mode, a sliding block on the right side surface of the pressing plate is connected with a sliding groove on the left side surface of the dynamic sealing ring in a sliding mode, the right end of the inner arc surface of the chromium layer is connected with the static sealing ring in a sliding mode, the left side surface of the static sealing ring is in contact with the right side surface of the dynamic sealing ring, and the inner rings of the pressing plate, the static sealing ring and the dynamic sealing ring and the circle center of the round hole are on the same straight line; the sealing mechanism further comprises a sealing ring which is uniformly arranged on the right side of the inner ring of the dynamic sealing ring, and the axial plunger pump sealing device is good in sealing effect and lubricated by a small amount of leaked liquid.

Description

Axial plunger pump sealing device

Technical Field

The utility model relates to the technical field of mechanical sealing, in particular to a sealing device of an axial plunger pump.

Background

The axial plunger pump is a swash plate type axial plunger pump which adopts an oil distribution disc to distribute oil, a cylinder body rotates and depends on variable head variables. The pump adopts the design of the optimal oil film thickness of hydrostatic balance, so that the cylinder body and the oil distribution disc, the piston shoes and the variable head are operated under the pure liquid friction, and the pump has the advantages of simple structure, small volume, low noise, high efficiency, long service life, self-absorption capacity and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, provides the sealing device for the axial plunger pump, has good sealing effect, utilizes a small amount of leaked liquid, and can effectively solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the axial plunger pump sealing device comprises a shell and a sealing mechanism;

the casing is coated with a chromium layer, the annular boss on the right side of the casing is provided with uniformly distributed mounting holes, and the left side of the casing is provided with a round hole.

A sealing mechanism: it includes the pressure strip, dynamic seal circle and static seal circle, pressure strip sliding connection is in the intrados of chromium layer, the slider of pressure strip right flank and the spout sliding connection of dynamic seal circle left surface, the right-hand member sliding connection of chromium layer intrados has static seal circle, the left surface of static seal circle and the right flank contact of dynamic seal circle, the pressure strip, the inner ring of static seal circle and dynamic seal circle and the centre of a circle of round hole are on same straight line, the static seal circle is hugging closely to the dynamic seal circle and is rotating, thereby seal liquid from one side to other one side, it is sealed effectual, the leakage capacity is little, contact surface between them can be lubricated to less weeping, make the frictional force of axial plunger pump during operation littleer, reduce wearing and tearing, make sealed effect better.

Furthermore, sealing mechanism still includes the sealing ring, the sealing ring evenly sets up in the right side of dynamic seal circle inner ring, increases frictional force and leakproofness.

Furthermore, the radius of the compression plate, the radius of the inner ring of the static sealing ring and the radius of the round hole are the same, and the radius of the inner ring of the dynamic sealing ring is smaller than that of the inner ring of the compression plate, so that the dynamic sealing ring can rotate along with the rotating shaft.

Furthermore, still include the anti-rotating pin, the anti-rotating pin symmetry sets up in the right flank of static sealing washer, prevents that static sealing washer from rotating.

Further, still include sealed the pad, the right-hand member of static sealing washer is located to sealed fixed the overlapping of pad, and the right-hand member of sealed pad is equipped with the mouth of dodging that corresponds with the anti-rotation pin, prevents that liquid from flowing out.

Further, still include the threaded rod, the equal threaded connection of threaded rod is in the screwed hole of casing left surface, and the right-hand member of threaded rod passes through the bearing and is connected with the left surface rotation of pressure strip, and the left end of threaded rod is equipped with the block for contact is inseparabler between each part of sealing mechanism.

Furthermore, still include the rubber pad, the rubber pad sets up in the left wall of casing, is equipped with the hole of dodging that corresponds with the screw hole on the rubber pad, separates casing and pressure strip.

Compared with the prior art, the utility model has the beneficial effects that: the sealing device for the axial plunger pump has the following advantages:

the static sealing ring penetrates through a rotating shaft of the axial plunger pump, the anti-rotation pin is inserted in the pin groove, so that the sealing gasket is in close contact with a pump body of the axial plunger pump, the dynamic sealing ring is sleeved on the rotating shaft of the axial plunger pump, the axial plunger pump is in closer contact with an inner arc surface of the dynamic sealing ring due to the smaller inner surface of the dynamic sealing ring, the friction force is increased while the sealing ring is sealed, the shell and the pressing plate are sleeved on the rotating shaft of the axial plunger pump, the shell is fixed by a bolt penetrating through the mounting hole, the nut cap is screwed by a wrench to drive the threaded rod to rotate, the pressing plate is pushed rightwards, so that the pressing plate, the dynamic sealing ring and the static sealing ring are in closer contact, the threaded rod is used for pressing each part, the dynamic sealing ring moves along with the shaft, the static sealing ring is not moved, the dynamic sealing ring is tightly attached to the static sealing ring to rotate, so as to seal the liquid from one side to the other side, the axial plunger pump has the advantages that the sealing effect is good, the leakage amount is small, the few leakage can lubricate the contact surfaces of the axial plunger pump and the axial plunger pump, the friction force is smaller when the axial plunger pump works, the abrasion is reduced, and the sealing effect is better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the sealing mechanism of the present invention.

In the figure: the sealing device comprises a shell 1, a chromium layer 2, a sealing mechanism 3, a pressing plate 31, a dynamic sealing ring 32, a sealing ring 33, a static sealing ring 34, an anti-rotation pin 4, a sealing gasket 5, a mounting hole 6, a threaded rod 7 and a rubber gasket 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present embodiment provides the following technical solutions: the axial plunger pump sealing device comprises a shell 1 and a sealing mechanism 3;

the surface of the shell 1 is plated with a chromium layer 2, a sealing device is installed, mounting holes 6 are uniformly distributed on an annular point table on the right side of the shell 1, a round hole is formed in the left side face of the shell 1, and a bolt penetrates through the mounting holes 6 to fix the shell 1.

The sealing mechanism 3: the sealing mechanism 3 also comprises a sealing ring 33, the sealing ring 33 is uniformly arranged on the right side of the inner ring of the dynamic sealing ring 32, the radii of the inner ring of the pressing plate 31 and the inner ring of the static sealing ring 34 and the round hole are the same, the radius of the inner ring of the dynamic sealing ring 32 is smaller than that of the inner ring of the pressing plate 31, the inner ring of the static sealing ring 34 is smaller than that of the inner ring of the pressing plate 31, the static sealing ring 34 penetrates through the rotating shaft of the axial plunger pump, the anti-rotation pin 4 is inserted into the pin groove, so that the sealing gasket 5 is tightly contacted with the pump body of the axial plunger pump, the dynamic sealing ring 32 is sleeved on the rotating shaft of the axial plunger pump, the inner surface of the dynamic sealing ring 32 is smaller, so that the axial plunger pump is contacted with the inner arc surface of the dynamic sealing ring 32 more tightly, the sealing ring 33 increases friction force while sealing, and the shell 1 and the pressing plate 31 are sleeved on the rotating shaft of the axial plunger pump.

Wherein: the anti-rotation device further comprises an anti-rotation pin 4, wherein the anti-rotation pin 4 is symmetrically arranged on the right side face of the static sealing ring 34 and prevents the static sealing ring 34 from rotating.

Wherein: still including sealed 5, the right-hand member of static sealing washer 34 is located to sealed 5 fixed cover of filling up, and the right-hand member of sealed 5 is equipped with the mouth of dodging that corresponds with anti-rotating pin 4, prevents that liquid from flowing out.

Wherein: still include threaded rod 7, the equal threaded connection of threaded rod 7 is in the threaded hole of 1 left surface of casing, and the right-hand member of threaded rod 7 passes through the bearing and is connected with the left surface rotation of pressure strip 31, and the left end of threaded rod 7 is equipped with the block, twists the block through the spanner, drives threaded rod 7 and rotates, promotes pressure strip 31 right for contact is inseparabler between pressure strip 31, dynamic seal circle 32 and the static seal circle 34.

Wherein: still include rubber pad 8, rubber pad 8 sets up in the left wall of casing 1, is equipped with the hole of dodging that corresponds with the screw hole on the rubber pad 8, guarantees that the left wall of casing 1 and pressure strip 31 can not direct contact when not installing.

The working principle of the sealing device of the axial plunger pump provided by the utility model is as follows: the static sealing ring 34 penetrates through the rotating shaft of the axial plunger pump, the anti-rotation pin 4 is inserted into the pin groove, the sealing gasket 5 is in close contact with the pump body of the axial plunger pump, the dynamic sealing ring 32 is sleeved on the rotating shaft of the axial plunger pump, the axial plunger pump is in closer contact with the inner arc surface of the dynamic sealing ring 32 due to the smaller inner surface of the dynamic sealing ring 32, the sealing ring 33 is sealed and increases friction force, the shell 1 and the pressing plate 31 are sleeved on the rotating shaft of the axial plunger pump, a bolt penetrates through the mounting hole 6 to fix the shell 1, the nut cap is screwed by a wrench to drive the threaded rod 7 to rotate, the pressing plate 31 is pushed rightwards, the pressing plate 31, the dynamic sealing ring 32 and the static sealing ring 34 are in closer contact, when the axial plunger pump starts to work, the internal lubricating oil cannot be exposed from the side surface under the sealing of the sealing gasket 5, and the static sealing ring 34 cannot rotate under the fixing of the anti-rotation pin 4, dynamic seal circle 32 and pivot rotate together, can not flow through the local intrados of dynamic seal circle 32, because dynamic seal circle 32 and static seal circle 34 slide under the state of in close contact with for lubricating oil flows from between the two seldom, and the lubricating oil that flows can lubricated contact surface further reduces frictional force, guarantees that axial plunger pump rotates unaffected.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. Axial plunger pump sealing device, its characterized in that: comprises a shell (1) and a sealing mechanism (3);

the surface of the shell (1) is plated with a chromium layer (2), the annular boss on the right side of the shell (1) is provided with uniformly distributed mounting holes (6), and the left side of the shell (1) is provided with a round hole;

sealing mechanism (3): it includes pressure strip (31), dynamic seal circle (32) and static seal circle (34), pressure strip (31) sliding connection is in the intrados of chromium layer (2), the slider of pressure strip (31) right flank and the spout sliding connection of dynamic seal circle (32) left surface, the right-hand member sliding connection of chromium layer (2) intrados has static seal circle (34), the left surface of static seal circle (34) and the right flank contact of dynamic seal circle (32), the inner ring of pressure strip (31), static seal circle (34) and dynamic seal circle (32) and the centre of a circle of round hole are on same straight line.

2. The axial plunger pump seal arrangement of claim 1, wherein: the sealing mechanism (3) further comprises a sealing ring (33), and the sealing ring (33) is uniformly arranged on the right side of the inner ring of the dynamic sealing ring (32).

3. The axial plunger pump seal arrangement of claim 1, wherein: the radiuses of the inner rings of the pressing plate (31) and the static sealing ring (34) are the same as those of the round holes, and the radius of the inner ring of the dynamic sealing ring (32) is smaller than that of the inner ring of the pressing plate (31).

4. The axial plunger pump seal arrangement of claim 1, wherein: the anti-rotation sealing ring is characterized by further comprising an anti-rotation pin (4), wherein the anti-rotation pin (4) is symmetrically arranged on the right side face of the static sealing ring (34).

5. The axial plunger pump seal arrangement of claim 4, wherein: still include sealed pad (5), the right-hand member of static sealing washer (34) is located to sealed fixed the overlapping of pad (5), and the right-hand member of sealed pad (5) is equipped with and dodges the mouth with anti-rotation pin (4) are corresponding.

6. The axial plunger pump seal arrangement of claim 1, wherein: still include threaded rod (7), threaded rod (7) equal threaded connection is in the screwed hole of casing (1) left surface, and the right-hand member of threaded rod (7) passes through the left surface rotation of bearing and pressure strip (31) to be connected, and the left end of threaded rod (7) is equipped with the block.

7. The axial plunger pump seal arrangement of claim 6, wherein: still include rubber pad (8), rubber pad (8) set up in the left wall of casing (1), are equipped with on rubber pad (8) and dodge the hole with the screw hole.