CN219345482U - An anti-leakage sealing device - Google Patents

Abstract

The utility model relates to the technical field of mechanical seals, and discloses an anti-leakage sealing device, comprising: an upper pressing piece, a middle pressing piece and a lower pressing piece arranged in sequence from top to bottom and arranged outside the drain pipe; Sealing rings on the top and bottom of the middle pressing piece; wherein, the top and bottom of the middle pressing piece are provided with sealing grooves matching the sealing rings, and the lower pressing piece is connected to the discharge port through a connecting part. In the utility model, the sealing ring is pressed by using the upper pressing tablet, the middle pressing tablet and the lower pressing tablet, and the sealing ring can be squeezed when the lower pressing tablet is tightened to seal it on the drain port and the drain pipe. While improving the sealing performance, the tightness of the sealing ring can be realized by tightening the lower pressing piece, and the upper pressing piece, the lower pressing piece and the sealing ring can be tightened at the same time, which can greatly facilitate the disassembly and assembly of the sealing ring, which is convenient for equipment maintenance. Provide convenience.

Description

An anti-leakage sealing device

technical field

The utility model relates to the technical field of mechanical seals, in particular to an anti-leakage sealing device.

Background technique

There will be photoresist inflow inside the mechanical seal device. Photoresist is a kind of sticky glue. After each work, it needs to be injected with a strong corrosive diluent/cleaner to clean the residual photoresist. , to prevent the hardening and crystallization of the photoresist, which will affect the stability of the equipment. After the cleaning is completed, the mixed waste liquid will be discharged from the mechanical drain. In order to prevent the cleaning agent from corroding the machine, the parts used in this device are all made of corrosion-resistant materials.

Most of the traditional mechanical seals are sealed with rubber pads and sealing rings. When these items work in the environment of highly corrosive liquids for a long time, their service life will be greatly reduced and leakage will be increased. The chance of liquid is likely to endanger the life and property safety of users. Relying on this kind of sealing accessories will have high technical requirements on the precision of machining and the skills of the installers. For ordinary people, it is not convenient to disassemble and assemble the sealing ring.

Utility model content

The purpose of this utility model is to provide an anti-leakage sealing device, which can solve the problems raised in the above-mentioned background technology by using the upper pressing piece, the middle pressing piece and the lower pressing piece to press the sealing ring.

In order to achieve the above purpose, the utility model provides the following technical solutions: an anti-leakage sealing device, including: an upper pressing piece, a middle pressing piece and a lower pressing piece arranged in order from top to bottom and arranged outside the drain pipe; Sealing rings at the top and bottom of the middle pressing piece; wherein, the top and bottom of the middle pressing piece are provided with sealing grooves matching the sealing rings, and the lower pressing piece is connected to the drain through a connecting part. in the mouth.

Further, the upper end of the drain pipe is fixed on the inner side of the upper pressing piece, and is arranged in an integral structure.

Further, the sealing ring includes: an inner ring and an outer ring; the inner ring is in contact with the outside of the drain pipe, and the outer ring is in contact with the inner side of the drain port. The sealing groove includes: an inner groove and an outer groove; the inner ring is connected in the inner groove, and the outer ring is connected in the outer groove.

Further, a stepped hole is opened in the drain port, and the top of the upper pressing piece is in contact with the top of the stepped hole; the upper half of the stepped hole is set as a smooth structure, and the lower half is set as an inner thread structure.

Further, the upper half of the lower pressing piece is set as an external thread structure, and the lower half is set as a hexagonal structure; the lower pressing piece is connected in the stepped hole through the external thread structure and the internal thread structure .

Further, a limiting assembly is provided between the upper pressing piece, the middle pressing piece and the lower pressing piece. The limiting assembly includes: a limiting rod and a limiting hole; wherein, the limiting hole is opened on the top of the middle pressing piece and the lower pressing piece, and the limiting rod is movably inserted into the limiting hole In the center, and the upper end of the limit rod is fixed on the bottom of the upper pressing piece. The lower end of the limiting rod and the edge of the limiting hole are both provided with a circular chamfering structure.

Compared with the prior art, the beneficial effect of the utility model is that in the utility model, the sealing ring can be pressed by using the upper pressing tablet, the middle pressing tablet and the lower pressing tablet, and the sealing ring can be squeezed when the lower pressing tablet is tightened , seal it on the drain port and the drain pipe, while improving the tightness, the tightness of the sealing ring can be realized by tightening the lower pressing piece, and the upper pressing piece, the middle pressing piece, the lower pressing piece and the sealing ring can be realized at the same time The tightness can greatly facilitate the disassembly and assembly of the sealing ring, providing convenience for equipment maintenance.

Description of drawings

Fig. 1 is a schematic diagram of the explosion structure of the utility model anti-leakage sealing device;

Fig. 2 is a schematic cross-sectional structure diagram of a liquid discharge port of the present invention;

Fig. 3 is the structural representation of sealing ring of the present utility model;

Fig. 4 is the sectional structure schematic diagram of the middle part pressing tablet of the present utility model;

Fig. 5 is the structural representation of the step hole of the utility model;

Fig. 6 is a structural schematic diagram of the limiting assembly of the present invention;

Fig. 7 is a schematic diagram of the structure of the utility model in which the drain pipe is connected to the drain port.

In the figure: 1, upper tablet; 2, middle tablet; 3, lower tablet; 4, sealing ring; 401, inner ring; 402, outer ring; 5, sealing groove; 501, inner groove; 502, outer groove ; 6, limit assembly; 601, limit rod; 602, limit hole; 7, drain port; 701, step hole; 8, drain pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

An anti-leakage sealing device is provided in the embodiment of the utility model, and the sealing device can be applied to various equipments that need to be sealed. For the convenience of understanding, the photoresist equipment is used as an example in this embodiment, and it is arranged at the discharge port of the waste liquid in this embodiment to seal the discharge port.

In order to solve the problem of inconvenient disassembly and assembly of sealing rings in the prior art, the anti-leakage sealing device in this embodiment is mainly composed of upper pressing piece 1, middle pressing piece 2, lower pressing piece 3, sealing ring 4 and other components. The liquid discharge port 7 and the liquid discharge pipe 8 are sealed by the above structure, but it is not limited thereto. As mentioned in this embodiment, the liquid discharge port 7 may be a connecting pipe, and the liquid discharge pipe 8 may be a valve or other structures, which will not be repeated here.

As shown in FIGS. 1-4 , the above-mentioned upper pressing piece 1 , middle pressing piece 2 and lower pressing piece 3 are arranged in order from top to bottom and arranged outside the drain pipe 8 . The middle pressing piece 2 mentioned therein can be provided with multiple groups according to needs, and the sealing ring 4 is connected to the top and bottom of the middle pressing piece 2; The groove 5 and the sealing groove 5 can limit the position of the sealing ring 4 .

In some other embodiments, the sealing ring 4 is composed of an inner ring 401 and an outer ring 402 . And 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 inner side of the drain port 7 . The sealing groove 5 is composed of an inner groove 501 and an outer groove 502; the inner ring 401 is connected in the inner groove 501, and the outer ring 402 is connected in the outer groove 502.

Through the arrangement of the inner ring 401 and the outer ring 402, the positions of the inner groove 501 and the outer groove 502 can be restricted to avoid misalignment during installation, which is beneficial to the positioning of the sealing ring and can effectively improve the sealing performance. In addition, by arranging the inner ring 401 and the outer ring 402 , effective sealing can be made between the liquid discharge port 7 and the liquid discharge pipe 8 .

In the above-mentioned structure, it is mainly for the illustration of the sealing performance, and in the following, it is mainly for the convenience of disassembling and assembling the sealing ring.

As shown in Figure 2, Figure 4-3, the above-mentioned lower pressing piece 3 is connected in the discharge port 7 through the connecting part, when the drain pipe 8 is connected to the liquid discharge port 7 through the lower pressing piece 3, The lower pressing piece 3 will squeeze the upper pressing piece 1, the middle pressing piece 2, the inner ring 401 and the outer ring 402, so that the inner ring 401 and the outer ring 402 are deformed and attached to the inner wall of the drain port 7 and the outer wall of the drain pipe 8.

In addition, in this embodiment, the upper end of the drain pipe 8 is fixed on the inner side of the upper pressing piece 1, and is arranged in an integral structure, which is convenient for synchronous installation. And between the upper pressing piece 1, the middle pressing piece 2 and the lower pressing piece 3, there is a limit assembly 6, which can limit the relative position between the upper pressing piece 1, the middle pressing piece 2, the lower pressing piece 3, and the sealing ring 4 , to avoid damage to the sealing ring during installation.

Further, the above-mentioned limiting assembly 6 includes: a limiting rod 601 and a limiting hole 602 . The limiting hole 602 is opened on the top of the middle pressing piece 2 and the lower pressing piece 3 , the limiting rod 601 is movably inserted in the limiting hole 602 , and the upper end of the limiting rod 601 is fixed on the bottom of the upper pressing piece 1 . In addition, the limiting hole 602 in the middle pressing piece 2 is set as a through hole, and the limiting hole 602 in the lower pressing piece 3 is set as a blind hole. And the lower end of the limiting rod 601 and the edge of the limiting hole 602 are both provided with a circular chamfering structure, which facilitates the insertion of the limiting rod 601 into the limiting hole 602 .

The above-mentioned connecting portion includes an internal thread structure and an external thread structure. Wherein, the external thread structure is arranged on the upper half of the lower pressing piece 3, and the internal thread structure is arranged on the lower half of the step hole 701. Through the setting of the internal thread structure and the external thread structure, it is beneficial to screw the lower pressing piece 3 into the step. In the hole 701, the step hole 701 is opened in the liquid discharge port 7, which is conducive to the contact between the top of the upper pressing piece 1 and the top of the step hole 701, which can play a role in restricting the upper pressing piece 1, and is beneficial to compress the upper pressing piece 1, Middle part pressing tablet 2, sealing ring 4.

It is worth noting that, in this embodiment, the upper half of the stepped hole 701 is set as a smooth structure, so as to facilitate the sealing between the outer ring 402 and the inner wall of the stepped hole 701 . The lower part of the lower pressing piece 3 is set to a hexagonal structure, which is convenient to use a wrench for loosening.

As shown in Figure 7, when installing the sealing ring, place the inner ring 401 and outer ring 402 in the inner groove 501 and outer groove 502 on the top of the middle pressing piece 2, and then insert the drain pipe 8 into the middle pressing piece 2 At the same time, the limiting rod 601 is inserted into the limiting hole 602 . Then place another inner ring 401 and outer ring 402 in the inner groove 501 and outer groove 502 at the bottom of the middle pressing piece 2, then put the lower pressing piece 3 on the outside of the drain pipe 8, and press the inner ring 401 and the outer ring 402 on. Insert the drain pipe 8 into the stepped hole 701, and then fix the lower pressing piece 3 in the stepped hole 701 through the internal thread structure and the external thread structure. In the process of tightening the lower pressing piece 3 , the inner ring 401 and the outer ring 402 are deformed and attached to the inner wall of the drain port 7 and the outer wall of the drain pipe 8 .

When disassembling, use a wrench to remove the lower pressing piece 3, and then pull the drain pipe 8 to pull the upper pressing piece 1, the middle pressing piece 2, and the sealing ring 4 out of the stepped hole 701. While improving the sealing performance, the tightness of the sealing ring can be realized by tightening the lower pressing piece, and the upper pressing piece, the middle pressing piece, the lower pressing piece and the sealing ring can be tightened at the same time, which can greatly facilitate the disassembly and assembly of the sealing ring. Provides convenience in equipment maintenance.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (9)

1. An anti-leakage sealing device, characterized in that, comprising: The upper pressing tablet (1), the middle pressing tablet (2) and the lower pressing tablet (3) are arranged in order from top to bottom and arranged outside the discharge pipe (8); A sealing ring (4) connected to the top and bottom of the middle pressing piece (2); Wherein, the top and bottom of the middle pressing piece (2) are provided with a sealing groove (5) matching the sealing ring (4), and the lower pressing piece (3) is connected to the drain port through a connecting portion (7). 2 . The anti-leakage sealing device according to claim 1 , characterized in that: the upper end of the drain pipe ( 8 ) is fixed on the inner side of the upper pressing piece ( 1 ) and is arranged in an integrated structure. 3 . 3. An anti-leakage sealing device according to claim 1, characterized in that: the sealing ring (4) comprises: an inner ring (401) and an outer ring (402); the inner ring (401) and The outside of the drain pipe (8) is in contact, and the outer ring (402) is in contact with the inside of the drain port (7). 4. An anti-leakage sealing device according to claim 3, characterized in that: the sealing groove (5) comprises: an inner groove (501) and an outer groove (502); the inner ring (401) is connected In said inner groove (501), said outer ring (402) is connected in said outer groove (502). 5. An anti-leakage sealing device according to claim 3, characterized in that: a stepped hole (701) is opened in the liquid discharge port (7), and the top of the upper pressing piece (1) is in contact with the The top of the step hole (701) is in contact; The upper half of the stepped hole (701) is set as a smooth structure, and the lower half is set as an internal thread structure. 6. An anti-leakage sealing device according to claim 5, characterized in that: the upper half of the lower pressing piece (3) is configured as an external thread structure, and the lower half is configured as a hexagonal structure; The lower pressing piece (3) is connected in the stepped hole (701) through the external thread structure and the internal thread structure. 7. An anti-leakage sealing device according to claim 2, characterized in that: there is a limit between the upper pressing piece (1), the middle pressing piece (2) and the lower pressing piece (3) Components (6). 8. An anti-leakage sealing device according to claim 7, characterized in that: the limiting assembly (6) comprises: a limiting rod (601) and a limiting hole (602); Wherein, the limiting hole (602) is opened on the top of the middle pressing piece (2) and the lower pressing piece (3), and the limiting rod (601) is movably inserted into the limiting hole (602) , and the upper end of the limit rod (601) is fixed on the bottom of the upper pressing piece (1). 9. An anti-leakage sealing device according to claim 8, characterized in that: the lower end of the limiting rod (601) and the edge of the limiting hole (602) are both set in a circular inverted shape Angle structure.

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