CN219012957U

CN219012957U - Front-mounted lip seal

Info

Publication number: CN219012957U
Application number: CN202222910722.3U
Authority: CN
Inventors: 梁陈长生; 骆宝平
Original assignee: Shanghai Qingwei Environmental Technology Co ltd
Current assignee: Shanghai Qingwei Environmental Technology Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-05-12
Anticipated expiration: 2032-11-02

Abstract

The utility model provides a front-mounted lip seal, and relates to the field of equipment sealing. The front-mounted lip seal comprises a transmission shaft and a cavity, wherein two lip seal rings are arranged in the cavity, supporting seats are sleeved outside the two lip seal rings, a bolt baffle is arranged on one side of each supporting seat, and a notch clamping sleeve and a shaft sleeve are sleeved outside the transmission shaft. The front-mounted lip seal has the advantages that the supporting seat sleeved outside the lip seal ring is fixed with the cavity through threads, the lip seal structure formed by the cavity, the shaft sleeve gasket, the supporting seat, the lip seal ring and other parts is arranged at one end of the transmission shaft, namely, the lip seal structure is arranged at one side inside the pump body, and after the pump cover and the rotor are disassembled, the lip seal structure formed by the cavity, the shaft sleeve gasket, the supporting seat, the lip seal ring and other parts can be maintained, so that the condition that the lip seal structure is difficult to disassemble when being arranged inside the pump body is changed.

Description

Front-mounted lip seal

Technical Field

The utility model relates to a lip seal, in particular to a front lip seal, and belongs to the technical field of equipment sealing.

Background

The lip seal is realized by deforming the lip of the lip seal under the action of hydraulic pressure to enable the lip to cling to the sealing surface. The higher the hydraulic pressure, the tighter the lip and the sealing surface are stuck, and the sealing lip has certain automatic compensation capability after being worn.

Lip seals are commonly used for liquid material transport containing solid particles, such as mud, chocolate, toothpaste, and the like. Once particulate matter enters the sealing surface of the mechanical seal, serious abrasion is generated, the sealing effect is destroyed, and leakage occurs. While the lip seal: the cavity (1) is pressed tightly along with the pressure; the shaft sleeve (2) has compensation function, and the leakage problem can not occur.

The utility model provides a centrifugal slurry pump lip-shaped combined sealing structure of present patent application number 201720284715.3, including main shaft, axle sleeve, cover in the epaxial lip seal circle of axle sleeve, with the terminal gland of sealing box of pump case seal box, lip seal circle is located the sealing box, and lip seal circle is provided with a plurality of, outwards arranges in proper order from nearly pump case side, and at least one lip seal circle of nearest pump case side is the rubber seal circle of taking the filtration, the rubber seal circle of taking the filtration includes annular rubber base member, embedded reinforcement skeleton in the rubber base member, and the rubber base member inner circle is provided with the seal lip, and rubber base member one side is the inflow side, and the opposite side is the outflow side, is provided with filter unit between rubber base member and the seal lip, and filter unit is including holding the chamber that fills the filter core body and make holding chamber and rubber base member outflow side link up, and the slurry is from inflow side to hold the chamber through the filter core body filtration, and the net liquid after the filtration flows out from the link up and gets into the outflow side

Taking the above technology as an example, when the lip seal is installed inside the device, the lip seal can be detached only after the whole device is detached step by step, which is troublesome and time-consuming to operate.

Disclosure of Invention

(one) solving the technical problems

The utility model aims to solve the problems and provide a front-mounted lip seal, so as to solve the problems that the lip seal is mounted in equipment in the prior art, and the lip seal can be dismounted only after the whole equipment is dismounted step by step, so that the operation is troublesome and time-consuming.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the front-mounted lip seal comprises a transmission shaft and a cavity, wherein two lip seal rings are arranged in the cavity, supporting seats are sleeved outside the two lip seal rings, a bolt baffle is arranged on one side of each supporting seat, and a notch cutting sleeve and a shaft sleeve are sleeved outside the transmission shaft.

Preferably, two transmission shafts are arranged, one ends of the two transmission shafts extend into two lip-shaped sealing rings respectively, and the lip-shaped sealing rings are made of various materials such as PTFE, PEEK and the like.

Preferably, two slots are formed in one side of the cavity, one ends of the two transmission shafts penetrate through the two slots respectively and then extend into the two lip-shaped sealing rings, the cavity and the lip-shaped sealing rings are arranged in front, the maintenance is convenient, and the maintenance can be carried out only by detaching the pump cover and the rotor.

Preferably, the transmission shaft outside cover is equipped with the breach cutting ferrule, breach cutting ferrule one side is provided with the axle sleeve, separates transmission shaft and cavity through the setting of breach cutting ferrule and axle sleeve, reduces the wearing and tearing of cavity, guarantees the life of cavity, and axle sleeve and breach cutting ferrule have multiple material optional such as carborundum, tungsten carbide.

Preferably, a shaft sleeve gasket is arranged between the lip seal ring and the cavity, the lip seal ring and the cavity are buffered through the arrangement of the shaft sleeve gasket, the abrasion deformation of the cavity and the lip seal ring is reduced, the working life of the cavity and the lip seal ring is prolonged, the bolt baffle is rotationally connected to one side of the supporting seat, which is far away from the shaft sleeve gasket, the bolt baffle is rotated to enable the bolt baffle to be blocked on one side of the mounting bolt, and even if the mounting bolt is loose, the mounting bolt cannot fall off, the rotor is prevented from being damaged by collision with the rotor when the mounting bolt falls off, or other equipment is prevented from being damaged by the mounting bolt falling off into a pipeline, or the mounting bolt is prevented from entering a product.

Preferably, a plurality of installation thread grooves are formed in the cavity and the supporting seat, a plurality of installation bolts are arranged on one side of the bolt baffle plate, the installation bolts penetrate through the installation thread grooves and are in threaded connection with the supporting seat and the cavity, the supporting seat and the cavity are fixedly installed through the installation bolts, the position of the lip-shaped sealing ring is fixedly installed, the lip-shaped sealing ring is prevented from falling off, circular movement and front-back movement, and the lip-shaped sealing ring and the transmission shaft are guaranteed to be matched with stability.

Preferably, a plurality of bulges are arranged in the cavity, a plurality of grooves are formed in one side of the lip-shaped sealing ring, the bulges extend into the grooves, limit the lip-shaped sealing ring further, and the lip-shaped sealing ring is positioned and prevented from moving circularly.

The utility model provides a front-mounted lip seal, which has the following beneficial effects:

1. the front-mounted lip seal has the advantages that the supporting seat sleeved outside the lip seal ring is fixed with the cavity through threads, the lip seal structure formed by the cavity, the shaft sleeve gasket, the supporting seat, the lip seal ring and other parts is arranged at one end of the transmission shaft, namely, the lip seal structure is arranged at one side inside the pump body, and after the pump cover and the rotor are disassembled, the lip seal structure formed by the cavity, the shaft sleeve gasket, the supporting seat, the lip seal ring and other parts can be maintained, so that the condition that the lip seal structure is difficult to disassemble when being arranged inside the pump body is changed.

2. This leading lip seal, recess and arch increase the atress area and the atress direction between lip seal ring and the cavity, guarantee the stability of lip seal ring and cavity installation, the groove and the mounting bolt dislocation of bolt baffle block mounting bolt one side, avoid mounting bolt because the vibration not hard up even drop, can prevent that mounting bolt from taking place the collision damage rotor with the rotor after becoming flexible, avoid mounting bolt to drop and get into pipeline damage other equipment, perhaps get into inside the product, guarantee the security that lip seal structure that parts such as cavity, axle sleeve, supporting seat, lip seal ring, mounting bolt, bolt baffle formed was used.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a support base according to the present utility model;

FIG. 3 is a schematic view of a partial structure of a chamber according to the present utility model;

FIG. 4 is a schematic view of the structure of the chamber of the present utility model;

fig. 5 is a schematic structural view of a transmission shaft according to the present utility model.

In the figure: 1. a cavity; 2. a shaft sleeve; 3. a transmission shaft; 4. a support base; 5. a lip seal ring; 6. installing a bolt; 7. a bolt baffle; 8. installing a thread groove; 9. a sleeve gasket; 10. a slot; 11. the notch cutting sleeve.

Detailed Description

The embodiment of the utility model provides a front-mounted lip seal.

Referring to fig. 1, 2, 3, 4 and 5, the device comprises a transmission shaft 3 and a cavity 1, a notch cutting sleeve 11 is sleeved outside the transmission shaft 3, a shaft sleeve 2 is arranged on one side of the notch cutting sleeve 11, the transmission shaft 3 is separated from the cavity 1 through the arrangement of the notch cutting sleeve 11 and the shaft sleeve 2, abrasion of the cavity 1 is reduced, service life of the cavity 1 is ensured, the shaft sleeve 2 and the notch cutting sleeve 11 are made of various materials such as silicon carbide and tungsten carbide, two lip-shaped sealing rings 5 are arranged inside the cavity 1, the transmission shaft 3 is provided with two, one ends of the two transmission shafts 3 respectively extend into the two lip-shaped sealing rings 5, the lip-shaped sealing rings 5 are made of various materials such as PTFE and PEEK, a shaft sleeve gasket 9 is arranged between the lip-shaped sealing rings 5 and the cavity 1, the lip-shaped sealing rings 5 and the cavity 1 are buffered through the arrangement of the shaft sleeve gasket 9, abrasion deformation of the cavity 1 and the lip-shaped sealing rings 5 is reduced, the working life of the cavity 1 and the lip seal ring 5 is prolonged, the bolt baffle 7 is rotationally connected to one side of the supporting seat 4 far away from the shaft sleeve gasket 9, the bolt baffle 7 is rotated to enable the bolt baffle 7 to block one side of the mounting bolt 6, even if the mounting bolt 6 is loose, the bolt baffle 7 cannot fall off, the bolt baffle can prevent the rotor from being damaged by collision with the rotor when the mounting bolt 6 falls off, or prevent the mounting bolt 6 from falling into a pipeline to damage other equipment, or prevent the mounting bolt 6 from entering products, the supporting seat 4 is sleeved outside the two lip seal rings 5, the bolt baffle 7 is arranged on one side of the supporting seat 4, the notch cutting sleeve 11 and the shaft sleeve 2 are sleeved outside the transmission shaft 3, two slots 10 are formed in one side of the cavity 1, one ends of the two transmission shafts 3 respectively penetrate through the two slots 10 and then extend into the two lip seal rings 5, the cavity 1 and the lip seal rings 5 are arranged in front, the maintenance is convenient, only need pull down pump cover and rotor, can maintain, a plurality of mounting thread grooves 8 have all been seted up to cavity 1 and supporting seat 4, bolt baffle 7 one side is provided with a plurality of mounting bolts 6, a plurality of mounting bolts 6 run through a plurality of mounting thread grooves 8 respectively and with supporting seat 4 and cavity 1 threaded connection, through mounting bolt 6 with supporting seat 4 and cavity 1 fixed mounting, install fixedly the position of lip seal ring 5, avoid lip seal ring 5 to drop, circumferential motion and fore-and-aft motion, guarantee lip seal ring 5 and transmission shaft 3 complex stability, cavity 1 is inside to be provided with a plurality of archs, a plurality of recesses have been seted up to lip seal ring 5 one side, the arch extends to the recess inside, further spacing to lip seal ring 5, play the effect of location, prevention circumferential motion to lip seal ring 5.

Specifically, the outside cover of transmission shaft 3 one end is equipped with lip seal ring 5 to be provided with axle sleeve gasket 9 between lip seal ring 5 and the cavity 1, carry out buffer protection through axle sleeve gasket 9 between lip seal ring 5 and cavity 1, and the supporting seat 4 and the cavity 1 thread tightening that lip seal ring 5 outside cover was established, install the lip seal structure that cavity 1, axle sleeve 2, axle sleeve gasket 9, supporting seat 4, lip seal ring 5 etc. part formed in transmission shaft 3 one end, namely lip seal structure sets up in the inside one side of pump body, only need dismantle the pump cover with the rotor after, can maintain the lip seal structure that cavity 1, axle sleeve 2, axle sleeve gasket 9, supporting seat 4, lip seal ring 5 etc. part formed, the condition that is difficult to dismantle with lip seal structure installs the inside pump body has been changed.

A groove and a bulge are arranged between the lip-shaped sealing ring 5 and the cavity 1, and the stress area and the stress direction between the lip-shaped sealing ring 5 and the cavity 1 are increased through the groove and the bulge, so that the mounting stability of the lip-shaped sealing ring 5 and the cavity 1 is ensured. And after the installation bolt 6 rotates to the inside of the installation thread groove 8 formed by the supporting seat 4 and the cavity 1, the cavity 1 and the supporting seat 4 are fixed together through the installation bolt 6, and then the supporting seat 4 is rotated to rotate the connected bolt baffle 7, so that the groove of the bolt baffle 7 is misplaced with the installation bolt 6, one side of the installation bolt 6 is blocked, the installation bolt 6 is prevented from loosening or even falling off due to vibration, the installation bolt 6 can be prevented from colliding with the rotor to damage the rotor after loosening, the installation bolt 6 is prevented from falling off to enter a pipeline to damage other equipment, or entering the inside of a product, and the safety of the use of a lip seal structure formed by the cavity 1, the shaft sleeve 2, the supporting seat 4, the lip seal ring 5, the installation bolt 6, the bolt baffle 7 and other parts is ensured.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Front-mounted lip seal, including transmission shaft (3) and cavity (1), its characterized in that: the novel sealing device is characterized in that two lip-shaped sealing rings (5) are arranged inside the cavity (1), supporting seats (4) are sleeved outside the lip-shaped sealing rings (5), a bolt baffle (7) is arranged on one side of each supporting seat (4), and a notch clamping sleeve (11) and a shaft sleeve (2) are sleeved outside the transmission shaft (3).

2. A front-facing lip seal as defined in claim 1, wherein: the two transmission shafts (3) are arranged, and one ends of the two transmission shafts (3) extend into the two lip-shaped sealing rings (5) respectively.

3. A front-facing lip seal as defined in claim 1, wherein: two slots (10) are formed in one side of the cavity (1), and one ends of the two transmission shafts (3) penetrate through the two slots (10) respectively and then extend into the two lip-shaped sealing rings (5).

4. A front-facing lip seal as defined in claim 1, wherein: the transmission shaft (3) is sleeved with a notch clamping sleeve (11), and one side of the notch clamping sleeve (11) is provided with a shaft sleeve (2).

5. A front-facing lip seal as defined in claim 1, wherein: a shaft sleeve gasket (9) is arranged between the lip-shaped sealing ring (5) and the cavity (1), and the bolt baffle (7) is rotationally connected to one side, far away from the shaft sleeve gasket (9), of the supporting seat (4).

6. A front-facing lip seal as defined in claim 1, wherein: the cavity (1) and the supporting seat (4) are provided with a plurality of installation thread grooves (8), one side of the bolt baffle (7) is provided with a plurality of installation bolts (6), and a plurality of installation bolts (6) respectively penetrate through the installation thread grooves (8) and are in threaded connection with the supporting seat (4) and the cavity (1).

7. A front-facing lip seal as defined in claim 1, wherein: the inside of cavity (1) is provided with a plurality of archs, a plurality of recesses have been seted up to lip seal ring (5) one side, protruding extension is inside the recess.