CN217462643U

CN217462643U - Water pump shaft sealing mechanism

Info

Publication number: CN217462643U
Application number: CN202220225938.3U
Authority: CN
Inventors: 郑甫仕
Original assignee: Sichuan Dongmi Environmental Protection Machinery Equipment Co ltd
Current assignee: Sichuan Dongmi Environmental Protection Machinery Equipment Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-09-20
Anticipated expiration: 2032-01-24

Abstract

The utility model discloses a pump shaft sealing mechanism of a water pump, which comprises a movable ring, a stationary ring component and a sealing end cover, wherein the sealing end cover and a pump shell are connected to form a sealing cavity, the movable ring is sleeved on a pump shaft, the stationary ring component comprises a stationary ring and a stationary ring seat, the stationary ring seat comprises a mounting ring and a limiting ring, the mounting ring is connected with the sealing end cover, a plurality of limiting grooves are arranged on the inner wall of the mounting ring along the axial direction, the limiting ring comprises a main ring and a limiting part, the limiting part comprises a sliding hole, a limiting block and an adjusting bolt which are arranged on the outer side wall of the main ring along the radial direction, the inner walls of the limiting block and the sliding hole are in sliding fit, the adjusting bolt is rotationally connected with the main ring and is connected with the limiting block through screw threads, the limiting part is arranged along the circumferential direction of the main ring, each limiting block is partially arranged in the limiting groove, the stationary ring is sleeved on the pump shaft, the stationary ring is connected with the sealing end cover in sliding way, the stationary ring is abutted against the movable ring, an elastic component is arranged between the static ring and the main ring.

Description

Water pump shaft sealing mechanism

Technical Field

The utility model relates to a mechanical seal technical field is a water pump shaft sealing mechanism particularly.

Background

The mechanical seal belongs to one kind of sealed, generally be used for the dynamic seal at rotatory position, mechanical seal generally includes the rotating ring subassembly, the seal chamber that quiet ring subassembly and casing enclose, its during operation, quiet ring subassembly keeps static, the rotating ring subassembly rotates along with the pivot together, quiet ring subassembly, form a layer fluid film between the rotating ring subassembly, realize sealed purpose, the spring is mechanical seal's important part, it provides the elastic force that makes the rotating ring, quiet ring contact each other, current mechanical seal's shortcoming lies in, the elastic restoring force of spring is difficult to adjust, if the elastic restoring force is too big can accelerate the wearing and tearing between rotating ring, the quiet ring, reduce its life, can't play sealed effect if the elastic restoring force undersize, lead to mechanical seal to take place the leakage.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to: the pump shaft sealing mechanism of the water pump is convenient to adjust the elastic restoring force of the elastic piece of the pump shaft sealing mechanism.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a pump shaft sealing mechanism of a water pump comprises a movable ring, a stationary ring assembly and a sealing end cover, wherein the sealing end cover and a pump shell are connected to form a sealing cavity in an enclosing mode, the movable ring is sleeved on a pump shaft, the stationary ring assembly comprises a stationary ring and a stationary ring seat, the stationary ring seat comprises a mounting ring and a limiting ring, the mounting ring is connected with the sealing end cover, a plurality of limiting grooves are formed in the inner wall of the mounting ring along the axial direction of the mounting ring, the limiting ring comprises a main ring and a limiting part, the limiting part comprises a sliding hole, a limiting block and an adjusting bolt, the sliding hole, the limiting block and the inner wall of the sliding hole are in sliding fit, the adjusting bolt is rotatably connected with the main ring and is in threaded connection with the limiting block, the limiting part is arranged in the circumferential direction of the main ring, each limiting block is partially arranged in the limiting groove, and the stationary ring is sleeved on the pump shaft, the static ring is connected with the sealing end cover in a sliding mode, the static ring is connected with the movable ring in an abutting mode, and an elastic component is arranged between the static ring and the main ring and used for providing elastic force for enabling the static ring to be tightly pressed on the movable ring.

Further, the elastic component comprises a base, an elastic piece and a sleeve, the base is connected with the main ring, the base faces to the end face of the static ring and is provided with a limiting hole, one end of the sleeve is open, the open end of the sleeve is inserted into the limiting hole, the sleeve is connected with the limiting hole in a sliding mode, and the elastic piece is arranged between the limiting hole and the end face of the sleeve.

Further, the elastic member is a spring.

Further, the end cover comprises a connecting portion and a matching portion, the connecting portion and the matching portion are connected through bolts, the connecting portion is connected with the pump shell, and the matching portion is connected with the static ring in a sliding mode.

Further, still include fixing bolt, be provided with the mounting hole on the cooperation portion, the one end of collar inserts among the mounting hole, be provided with the through-hole on the connecting portion, be provided with the screw hole on the cooperation portion, the screw hole with the inside intercommunication of mounting hole, be provided with the jack on the collar, through-hole, screw hole, jack are coaxial, fixing bolt's pole portion via the through-hole with screw hole screw-thread fit, the end of its pole portion set up in among the jack.

Further, sealing rings are respectively arranged between the connecting part and the matching part and between the movable ring and the pump shaft.

Furthermore, a sealing sleeve is arranged between the movable ring and the static ring.

Further, the static ring seat is arranged outside the sealing cavity.

Compared with the prior art, the utility model, following beneficial effect has:

1. twist and move adjusting bolt the stopper can be followed under adjusting bolt's the drive the slide opening on the main ring removes, works as the stopper retraction back among the slide opening, its limiting displacement disappears, the main ring can remove, otherwise, reverse rotation adjusting bolt makes the stopper stretches out, blocks until it card among the spacing groove on the collar, just can fix the main ring is relative the position of spacing ring can change the elastic restoring force of spring through the adjustment the position of main ring, and is too big as the elastic restoring force, will the main ring is fixed to keeping away from the spacing groove department of quiet ring, otherwise when the elastic restoring force undersize, then will the main ring removes to being close to the spacing groove department of quiet ring.

Drawings

Fig. 1 is the structure diagram of the pump shaft sealing mechanism of the water pump.

List of reference numerals

The pump comprises a pump shell 1, a connecting part 2, a matching part 3, a fixing bolt 4, a mounting ring 5, a limiting groove 6, a limiting block 7, an adjusting bolt 8, a main ring 9, a base 10, a sleeve 11, an elastic part 12, a static ring 13, a movable ring 14, a sealing sleeve 15 and a pump shaft 16.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

As shown in figure 1, in order to solve the problems existing in the prior art, the utility model provides a pump shaft sealing mechanism of a water pump, which comprises a movable ring 14, a stationary ring component and a sealing end cover, wherein the sealing end cover is connected with a pump shell 1 to form a sealing cavity, the movable ring 14 is sleeved on a pump shaft 16, the stationary ring component comprises a stationary ring 13 and a stationary ring seat, the stationary ring seat comprises a mounting ring 5 and a limiting ring, the mounting ring 5 is connected with the sealing end cover, a plurality of limiting grooves 6 are arranged on the inner wall of the mounting ring along the axial direction of the mounting ring, the limiting ring comprises a main ring 9 and a limiting part, the limiting part comprises a sliding hole, a limiting block 7 and an adjusting bolt 8 which are arranged on the outer side wall of the main ring 9 along the radial direction of the main ring 9, the limiting block 7 is in sliding fit with the inner wall of the sliding hole, the adjusting bolt 8 is rotatably connected with the main ring 9 and is in threaded connection with the limiting block 7, the limiting parts are arranged along the circumferential direction of the main ring 9, each limiting block 7 is partially arranged in the limiting groove 6, the static ring 13 is sleeved on the pump shaft 16, the static ring 13 is connected with the sealing end cover in a sliding mode, the static ring 13 is abutted to the moving ring 14, and an elastic part is arranged between the static ring 13 and the main ring 9 and used for providing elastic force for enabling the static ring 13 to be tightly pressed on the moving ring 14. The limiting block 7 is matched with the limiting groove 6 in the mounting ring 5 to fix the relative position between the main ring 9 and the mounting ring 5, the static ring 13 and the movable ring 14 are abutted under the action of the elastic component, such arrangement enables the elastic restoring force of the elastic component to be adjusted as required, for example, when the elastic restoring force is too large, the main ring 9 is fixed to the limiting groove 6 far away from the static ring 13, otherwise, when the elastic restoring force is too small, the main ring 9 is moved to the limiting groove 6 close to the static ring 13, specifically, the adjusting bolt 8 is screwed, the limiting block 7 can move along the sliding hole on the main ring 9 under the drive of the adjusting bolt 8, when the limiting block 7 retracts into the sliding hole, the limiting effect disappears, the main ring 9 can move, otherwise, the adjusting bolt 8 is rotated reversely to extend the limiting block 7, until it snaps into the retaining groove 6 on the mounting ring 5, the position of the primary ring 9 relative to the retaining ring can be fixed.

Because the situation that it need be used to carry corrosive medium exists in the use scene of water pump, consequently in this device, elastomeric element includes base 10, elastic component 12, sleeve 11, base 10 with the primary ring 9 is connected, base 10 is towards be provided with spacing hole on the terminal surface of quiet ring 13, sleeve 11 one end is open, and its open end inserts spacing hole, sleeve 11 with spacing hole sliding connection, be provided with elastic component 12 between the terminal surface of spacing hole, sleeve 11, elastic component 12 is the spring, spacing hole, sleeve 11 enclose into closed cavity, and elastic component 12 sets up wherein can avoid with corrosive medium direct contact, has increased elastic component 12's life. As mentioned above, water pumps may be used for conveying corrosive media, and therefore in the present arrangement the stationary seat is arranged outside the sealed chamber. Therefore, the spring is also positioned outside the sealing cavity, and the service life of the spring is further prolonged.

The sealing end cover in the prior art is mostly an integrated structure, and the structure causes the trouble of mechanical seal disassembly and assembly, and aims at the problems in the prior art, the sealing end cover comprises a connecting part 2 and a matching part 3, the connecting part 2 is connected with the pump shell 1 through a bolt, and the matching part 3 is connected with the static ring 13 in a sliding manner. Still include fixing bolt 4, be provided with the mounting hole on the cooperation portion 3, the one end of collar 5 inserts among the mounting hole, be provided with the through-hole on the connecting portion 2, be provided with the screw hole on the cooperation portion 3, the screw hole with the inside intercommunication of mounting hole, be provided with the jack on the collar 5, through-hole, screw hole, jack are coaxial, fixing bolt 4's pole portion via the through-hole with screw hole screw-thread fit, the end of its pole portion set up in among the jack. Firstly, the split structure of the end cover makes it unnecessary to completely disassemble the end cover when replacing the moving ring 14 or the static ring 13, which reduces the workload, and moreover, the fixing bolt 4 can connect the connecting part 2 and the matching part 3, and can fix the mounting ring 5 on the matching part 3, thereby improving the disassembling and assembling efficiency.

Further, in order to improve the sealing performance between the components, sealing rings are respectively arranged between the connecting part 2 and the matching part 3 and between the movable ring 14 and the pump shaft 16.

Furthermore, a sealing sleeve 15 is arranged between the movable ring 14 and the stationary ring 13. The contact surface between the movable ring 14 and the sealing sleeve 15, the contact surface between the stationary ring 13 and the sealing sleeve 15 and the contact surface between the sealing sleeves 15 form sealing surfaces, and the sealing sleeve 15 reduces the relative rotating speed between the sealing end surfaces between the stationary ring 13 and the movable ring 14 in the mechanical seal, thereby improving the sealing performance.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the embodiments in the above description, and the technical concept of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. The utility model provides a water pump shaft sealing mechanism which characterized in that: the pump comprises a movable ring (14), a stationary ring assembly and a sealing end cover, wherein the sealing end cover is connected with a pump shell (1) to form a sealing cavity, the movable ring (14) is sleeved on a pump shaft (16), the stationary ring assembly comprises a stationary ring (13) and a stationary ring seat, the stationary ring seat comprises a mounting ring (5) and a limiting ring, the mounting ring (5) is connected with the sealing end cover, a plurality of limiting grooves (6) are formed in the inner wall of the mounting ring along the axial direction of the mounting ring, the limiting ring comprises a main ring (9) and a limiting part, the limiting part comprises a sliding hole, a limiting block (7) and an adjusting bolt (8) which are formed in the outer side wall of the main ring (9) along the radial direction of the main ring, the limiting block (7) is in sliding fit with the inner wall of the sliding hole, the adjusting bolt (8) is rotatably connected with the main ring (9) and is in threaded connection with the limiting block (7), and the limiting part is arranged in a plurality of the circumferential direction of the main ring (9), each limiting block (7) is partially arranged in the limiting groove (6), the static ring (13) is sleeved on the pump shaft (16), the static ring (13) is connected with the sealing end cover in a sliding mode, the static ring (13) is abutted to the moving ring (14), and an elastic component is arranged between the static ring (13) and the main ring (9) and used for providing elastic force for enabling the static ring (13) to be tightly pressed on the moving ring (14).

2. The water pump shaft sealing mechanism of claim 1, wherein: elastic component includes base (10), elastic component (12), sleeve (11), base (10) with the home ring (9) is connected, base (10) orientation be provided with spacing hole on the terminal surface of quiet ring (13), sleeve (11) one end is open, and its open end inserts spacing hole, sleeve (11) with spacing hole sliding connection, be provided with elastic component (12) between the terminal surface of spacing hole, sleeve (11).

3. The water pump shaft sealing mechanism of claim 2, wherein: the elastic piece (12) is a spring.

4. The water pump shaft sealing mechanism of claim 3, wherein: the sealing end cover comprises a connecting part (2) and a matching part (3), the connecting part (2) and the matching part are connected through a bolt, the connecting part (2) is connected with the pump shell (1), and the matching part (3) is connected with the static ring (13) in a sliding mode.

5. The pump shaft sealing mechanism of the water pump according to claim 4, wherein: still include fixing bolt (4), be provided with the mounting hole on cooperation portion (3), the one end of collar (5) is inserted among the mounting hole, be provided with the through-hole on connecting portion (2), be provided with the screw hole on cooperation portion (3), the screw hole with the inside intercommunication of mounting hole, be provided with the jack on collar (5), through-hole, screw hole, jack are with the axle center, the pole portion via of fixing bolt (4) the through-hole with screw hole screw-thread fit, the end of its pole portion set up in among the jack.

6. The water pump shaft sealing mechanism of claim 5, wherein: and sealing rings are respectively arranged between the connecting part (2) and the matching part (3) and between the movable ring (14) and the pump shaft (16).

7. The water pump shaft sealing mechanism of claim 6, wherein: a sealing sleeve (15) is arranged between the movable ring (14) and the static ring (13).

8. The pump shaft sealing mechanism of a water pump according to claim 7, wherein: the static ring seat is arranged outside the sealing cavity.