CN219345482U

CN219345482U - Anti-liquid leakage sealing device

Info

Publication number: CN219345482U
Application number: CN202320220272.7U
Authority: CN
Inventors: 贺武峰; 吴想
Original assignee: Jiangxi Weiyike Semiconductor Technology Co ltd
Current assignee: Jiangxi Weiyike Semiconductor Technology Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-07-14
Anticipated expiration: 2033-02-15

Abstract

The utility model relates to the technical field of mechanical sealing, and discloses a liquid leakage resistant sealing device, which comprises: an upper pressing sheet, a middle pressing sheet and a lower pressing sheet which are sequentially arranged from top to bottom and are arranged outside the liquid discharge pipe; sealing rings connected to the top and bottom of the middle pressing sheet; the top and the bottom of the middle pressing piece are respectively provided with a sealing groove matched with the sealing ring, and the lower pressing piece is connected into the liquid outlet through the connecting part. According to the utility model, the sealing ring is pressed by adopting the upper pressing piece, the middle pressing piece and the lower pressing piece, the sealing ring can be extruded when the lower pressing piece is screwed up, the sealing ring is sealed on the liquid outlet and the liquid outlet pipe, the tightness of the sealing ring can be realized by tightening the lower pressing piece while the tightness is improved, the tightness of the upper pressing piece, the middle pressing piece, the lower pressing piece and the sealing ring can be realized at the same time, the sealing ring can be conveniently disassembled and assembled, and convenience is provided for equipment maintenance.

Description

Anti-liquid leakage sealing device

Technical Field

The utility model relates to the technical field of mechanical sealing, in particular to a liquid leakage resistant sealing device.

Background

The photoresist in the mechanical sealing device flows into the mechanical sealing device, the photoresist is a sticky photoresist, and the residual photoresist is required to be cleaned by injecting a diluent/cleaning agent with stronger corrosiveness after each operation so as to prevent the photoresist from hardening and crystallizing, so that the stability of equipment is affected, and the mixed waste liquid can be discharged from the liquid discharge position of the machine after the cleaning is finished. In order to prevent the cleaning agent from corroding the machine, the parts used by the device are all made of materials with strong corrosion resistance.

Most of the traditional mechanical sealing devices are sealed by rubber gaskets and sealing rings, when the articles work in a highly corrosive liquid environment for a long time, the service life of the articles is greatly reduced, the probability of liquid leakage is increased, and the life and property safety of users are easily endangered. The sealing auxiliary member has high technical requirements on the machining precision and the technology of installers, and is inconvenient for general personnel to assemble and disassemble the sealing ring.

Disclosure of Invention

The utility model aims to provide a liquid leakage resistant sealing device, which is used for pressing a sealing ring by adopting an upper pressing piece, a middle pressing piece and a lower pressing piece so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a liquid-tight seal comprising: an upper pressing sheet, a middle pressing sheet and a lower pressing sheet which are sequentially arranged from top to bottom and are arranged outside the liquid discharge pipe; sealing rings connected to the top and bottom of the middle pressing sheet; the top and the bottom of the middle pressing piece are respectively provided with a sealing groove matched with the sealing ring, and the lower pressing piece is connected into the liquid outlet through the connecting part.

Further, the upper end of the liquid discharge pipe is fixed on the inner side of the upper pressing sheet and is arranged in an integrated structure.

Further, the sealing ring comprises: an inner ring and an outer ring; the inner ring is contacted with the outside of the liquid discharge pipe, and the outer ring is contacted with the inner side of the liquid discharge port. The seal groove includes: an inner tank and an outer tank; the inner ring is connected in the inner groove, and the outer ring is connected in the outer groove.

Further, a step hole is formed in the liquid outlet, and the top of the upper pressing sheet is contacted with the top of the step hole; the upper half part in the step hole is of a smooth structure, and the lower half part is of an internal thread structure.

Further, the upper half part of the lower pressing sheet is provided with an external thread structure, and the lower half part of the lower pressing sheet is provided with a hexagonal structure; the lower pressing piece is connected in the step hole through the external thread structure and the internal thread structure.

Further, a limiting component is arranged between the upper pressing piece and the middle pressing piece as well as between the upper pressing piece and the lower pressing piece. The spacing subassembly includes: a limit rod and a limit hole; the limiting rod is movably inserted into the limiting hole, and the upper end of the limiting rod is fixed at the bottom of the upper pressing sheet. The lower end part of the limiting rod and the edge part of the limiting hole are both arranged to be round chamfer structures.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the sealing ring is pressed by adopting the upper pressing piece, the middle pressing piece and the lower pressing piece, the sealing ring can be extruded when the lower pressing piece is screwed up, the sealing ring is sealed on the liquid outlet and the liquid outlet pipe, the tightness of the sealing ring can be realized by tightening the lower pressing piece while the tightness is improved, the tightness of the upper pressing piece, the middle pressing piece, the lower pressing piece and the sealing ring can be realized at the same time, the sealing ring can be conveniently disassembled and assembled, and convenience is provided for equipment maintenance.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of a liquid-tight seal of the present utility model;

FIG. 2 is a schematic cross-sectional view of a drain port according to the present utility model;

FIG. 3 is a schematic view of a seal ring according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a middle press sheet of the present utility model;

FIG. 5 is a schematic view of the structure of the stepped hole of the present utility model;

FIG. 6 is a schematic view of a spacing assembly according to the present utility model;

fig. 7 is a schematic view showing a state that a liquid discharge pipe of the present utility model is connected to a liquid discharge port.

In the figure: 1. pressing the upper part into a sheet; 2. tabletting the middle part; 3. tabletting the lower part; 4. a seal ring; 401. an inner ring; 402. an outer ring; 5. sealing grooves; 501. an inner tank; 502. an outer groove; 6. a limit component; 601. a limit rod; 602. a limiting hole; 7. a liquid outlet; 701. a step hole; 8. and a liquid discharge pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides a liquid leakage resistant sealing device which can be applied to various devices needing sealing. For ease of understanding, the photoresist device is illustrated in this embodiment as being disposed at the waste liquid drain for sealing the drain.

In order to solve the problem of inconvenient disassembly and assembly of the sealing ring in the prior art, the liquid leakage resistant sealing device in the embodiment mainly comprises an upper pressing sheet 1, a middle pressing sheet 2, a lower pressing sheet 3, a sealing ring 4 and other parts. The drain port 7 and the drain pipe 8 are sealed by the above-described structure, but not limited thereto. The liquid drain 7 in this embodiment may be a connecting pipe, and the liquid drain pipe 8 may be a valve or other structures, which will not be described herein.

As shown in fig. 1 to 4, the upper press sheet 1, the middle press sheet 2 and the lower press sheet 3 described above are sequentially arranged from top to bottom and are disposed outside the liquid discharge pipe 8. The middle pressing piece 2 can be provided with a plurality of groups according to the requirement, and the sealing rings 4 are connected to the top and the bottom of the middle pressing piece 2; and seal grooves 5 matched with the seal rings 4 are formed in the top and bottom of the middle pressing piece 2, and the seal grooves 5 can limit the positions of the seal rings 4.

In other embodiments, the seal ring 4 is formed of an inner ring 401 and an outer ring 402. The inner ring 401 is in contact with the outside of the drain pipe 8, and the outer ring 402 is in contact with the inside of the drain port 7. The seal groove 5 is formed by an inner groove 501 and an outer groove 502; the inner race 401 is coupled to the inner race 501 and the outer race 402 is coupled to the outer race 502.

Through the setting of inner circle 401 and outer lane 402, can restrict the position of inside groove 501 and external groove 502, avoid causing the phenomenon of dislocation in the installation, do benefit to the sealing washer and fix a position, can effectually improve the leakproofness. Further, by providing the inner ring 401 and the outer ring 402, the sealing performance between the liquid discharge port 7 and the liquid discharge pipe 8 can be effectively sealed.

The above-mentioned structure is mainly exemplified for sealing, and the following is mainly about the convenience of assembling and disassembling the seal ring.

As shown in fig. 2, 4-3, the lower pressing sheet 3 is connected to the liquid outlet 7 through a connection portion, and when the liquid outlet 8 is connected to the liquid outlet 7 through the lower pressing sheet 3, the lower pressing sheet 3 presses the upper pressing sheet 1, the middle pressing sheet 2, the inner ring 401 and the outer ring 402, so that the inner ring 401 and the outer ring 402 are deformed and then attached to the inner wall of the liquid outlet 7 and the outer wall of the liquid outlet 8.

In addition, in the present embodiment, the upper end of the liquid discharge pipe 8 is fixed to the inner side of the upper pressing sheet 1, and is integrally provided, which is advantageous for synchronous installation. And be equipped with spacing subassembly 6 between upper portion preforming 1 and middle part preforming 2 and lower part preforming 3, can restrict the relative position between upper portion preforming 1, middle part preforming 2, lower part preforming 3, the sealing washer 4, avoid causing the condition that the sealing washer damaged when the installation.

Further, the limiting assembly 6 includes: a stop lever 601 and a stop hole 602. The limiting hole 602 is formed in the tops of the middle pressing piece 2 and the lower pressing piece 3, the limiting rod 601 is movably inserted into the limiting hole 602, and the upper end of the limiting rod 601 is fixed to the bottom of the upper pressing piece 1. In addition, the limiting hole 602 in the middle pressing sheet 2 is set as a through hole, and the limiting hole 602 in the lower pressing sheet 3 is set as a blind hole. And the lower end part of the limiting rod 601 and the edge part of the limiting hole 602 are both provided with round chamfer structures, so that the limiting rod 601 is conveniently inserted into the limiting hole 602.

The connecting part comprises an internal thread structure and an external thread structure. Wherein, the external screw thread structure sets up in the first half of lower part preforming 3, and the internal screw thread structure sets up in the lower half of step hole 701, through the setting of internal screw thread structure and external screw thread structure, does benefit to lower part preforming 3 screw in step hole 701, and step hole 701 is seted up in liquid outlet 7, does benefit to the top of upper portion preforming 1 and the top of step hole 701 to contact, can play the effect of restriction upper portion preforming 1, does benefit to compressing tightly upper portion preforming 1, middle part preforming 2, sealing washer 4.

It should be noted that, in this embodiment, the upper half portion of the stepped hole 701 is provided with a smooth structure, so as to facilitate sealing between the outer ring 402 and the inner wall of the stepped hole 701. The lower half part of the lower pressing sheet 3 is arranged into a hexagonal structure, so that the wrench is convenient to use for tightness.

As shown in fig. 7, in installing the packing, the inner ring 401 and the outer ring 402 are placed in the inner groove 501 and the outer groove 502 at the top of the middle press sheet 2, and then the drain pipe 8 is inserted into the middle press sheet 2 while the stopper rod 601 is inserted into the stopper hole 602. The other inner ring 401 and outer ring 402 are placed in the inner groove 501 and outer groove 502 at the bottom of the middle press piece 2, and then the lower press piece 3 is sleeved outside the liquid discharge pipe 8 and pressed on the inner ring 401 and outer ring 402. The drain pipe 8 is inserted into the stepped hole 701, and the lower pressure sheet 3 is fixed in the stepped hole 701 by the internal thread structure and the external thread structure. In the process of screwing the lower pressing piece 3, the inner ring 401 and the outer ring 402 are deformed and then attached to the inner wall of the liquid discharge port 7 and the outer wall of the liquid discharge pipe 8.

During disassembly, the lower pressing piece 3 is disassembled by a wrench, and then the liquid discharge pipe 8 is pulled to pull the upper pressing piece 1, the middle pressing piece 2 and the sealing ring 4 out of the step hole 701. Can improve the leakproofness in, can realize the elasticity of sealing washer through elasticity lower part preforming, can realize upper portion preforming, middle part preforming lower part preforming and sealing washer elasticity simultaneously, can greatly conveniently carry out dismouting sealing washer, provide convenient for equipment maintenance.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A liquid-tight seal, comprising:

an upper pressing sheet (1), a middle pressing sheet (2) and a lower pressing sheet (3) which are sequentially arranged from top to bottom and are arranged outside the liquid discharge pipe (8);

sealing rings (4) connected to the top and bottom of the middle pressing sheet (2);

the top and the bottom of the middle pressing piece (2) are respectively provided with a sealing groove (5) matched with the sealing ring (4), and the lower pressing piece (3) is connected in the liquid outlet (7) through a connecting part.

2. A liquid leakage resistant seal according to claim 1, wherein: the upper end of the liquid discharge pipe (8) is fixed at the inner side of the upper pressing sheet (1) and is arranged in an integrated structure.

3. A liquid leakage resistant seal according to claim 1, wherein: the seal ring (4) comprises: an inner ring (401) and an outer ring (402); the inner ring (401) is in contact with the outside of the liquid discharge pipe (8), and the outer ring (402) is in contact with the inside of the liquid discharge port (7).

4. A liquid-tight seal as claimed in claim 3, wherein: the seal groove (5) comprises: an inner tank (501) and an outer tank (502); the inner ring (401) is connected in the inner groove (501), and the outer ring (402) is connected in the outer groove (502).

5. A liquid-tight seal as claimed in claim 3, wherein: a step hole (701) is formed in the liquid outlet (7), and the top of the upper pressing sheet (1) is contacted with the top of the step hole (701);

the upper half part in the step hole (701) is provided with a smooth structure, and the lower half part is provided with an internal thread structure.

6. A liquid leakage resistant seal according to claim 5, wherein: the upper half part of the lower pressing sheet (3) is of an external thread structure, and the lower half part of the lower pressing sheet is of a hexagonal structure;

the lower pressing piece (3) is connected in the step hole (701) through the external thread structure and the internal thread structure.

7. A liquid leakage resistant sealing device according to claim 2, wherein: and a limiting component (6) is arranged between the upper pressing piece (1) and the middle pressing piece (2) and between the upper pressing piece (3).

8. A liquid leakage resistant seal according to claim 7, wherein: the limit assembly (6) comprises: a limit rod (601) and a limit hole (602);

the limiting hole (602) is formed in the tops of the middle pressing piece (2) and the lower pressing piece (3), the limiting rod (601) is movably inserted into the limiting hole (602), and the upper end of the limiting rod (601) is fixed at the bottom of the upper pressing piece (1).

9. A liquid leakage resistant seal according to claim 8, wherein: the lower end part of the limiting rod (601) and the edge part of the limiting hole (602) are both arranged to be in a round chamfer structure.